POLYESTER FIBER FOR AIRBAG AND PREPARATION METHOD THEREOF

The present invention relates to a polyester fiber that can be applied to a fabric for an airbag, and particularly, to a polyester fiber having elongation of 0.5% or more at a stress of 1.0 g/d, elongation of 4.3% or more at a stress of 4.0 g/d, and elongation of 7.5% or more at a stress of 7.0 g/d, and an initial modulus of 40 to 100 g/d, a method of preparing the same, and a fabric for an airbag prepared therefrom. Since the polyester fiber of the present invention remarkably decreases stiffness and secures superior mechanical properties, it is possible to provide superior packing properties, dimensional stability, and gas barrier effect, and to protect occupants safely by minimizing the impact applied to the occupants, when it is used for the fabric for an airbag. 1. A polyester fiber for an airbag , having elongation of 0.5% or more at a stress of 1.0 g/d , elongation of 4.3% or more at a stress of 4.0 g/d , and elongation of 7.5% or more at a stress of 7.0 g/d , and an initial modulus of 40 to 100 g/d at room temperature.2. The polyester fiber according to claim 1 , wherein intrinsic viscosity is 0.8 dl/g or more.3. The polyester fiber according to claim 1 , wherein content of a carboxylic end group (CEG) is 50 meq/kg or less.4. The polyester fiber according to claim 1 , wherein crystallinity is 40% to 55%.5. The polyester fiber according to claim 1 , wherein tensile tenacity is 6.5 g/d or more claim 1 , and elongation at break is 13% or more.6. The polyester fiber according to claim 1 , wherein dry heat shrinkage is 10% or less claim 1 , and toughness is 30×10g/d or more.7. The polyester fiber according to claim 1 , wherein fineness of monofilament is 0.5 to 20 denier.8. The polyester fiber according to claim 1 , wherein total fineness is 200 to 1000 denier.9. The polyester fiber according to claim 1 , wherein the number of filaments is 50 to 240.10. A method of preparing the polyester fiber according to claim 1 , including the steps of:melt-spinning a ...

POLYESTER FABRICS FOR AIRBAG AND PREPARATION METHOD THEREOF

Disclosed is a fabric for an airbag including a polyester fiber, and particularly to a polyester fabric for an airbag of which toughness is 3.5 to 6.0 kJ/mand tearing strength measured according to the ASTM D 2261 TONGUE method is 18 to 30 kgf, wherein the fabric includes polyester fiber of which toughness is 70 to 95 J/m, a method of preparing the same, and an airbag for a car including the same. 2. The polyester fabric according to claim 1 , wherein stiffness measured according to the ASTM D 4032 method is 1.5 kgf or less.3. The polyester fabric according to claim 1 , wherein static air permeability measured according to the ASTM D 737 method is 10.0 cfm or less when ΔP is 125 Pa claim 1 , and 14 cfm or less when ΔP is 500 Pa.4. The polyester fabric according to claim 1 , wherein dynamic air permeability measured according to the ASTM D 6476 method is 1700 mm/s or less.5. The polyester fabric according to claim 1 , wherein the fabric includes the polyester fiber having 110 or more filaments and fineness of the monofilament of 2.9 to 6.0 DPF.6. The polyester fabric according to claim 1 , wherein the fabric includes the polyester fiber having tensile tenacity of 8.3 g/de or more claim 1 , elongation at break of 14% to 24% claim 1 , and a dry heat shrinkage rate of 1.0% to 6.5%.7. The polyester fabric according to claim 1 , wherein the fabric includes the polyester fiber having Young's modulus of 60 to 100 g/de at 1% of elongation and 20 to 60 g/de at 2% of elongation claim 1 , which is measured according to the ASTM D 885 method.8. The polyester fabric according to claim 1 , wherein the fabric includes the polyester fiber that is prepared from polyester chips having intrinsic viscosity of 1.05 to 1.40 dl/g.9. The polyester fabric according to claim 1 , wherein the fabric is coated with at least one rubber component selected from the group consisting of a powder-type silicone claim 1 , a liquid-type silicone claim 1 , polyurethane claim 1 , chloroprene claim 1 , a ...

POLYESTER THREAD FOR AN AIR BAG AND PREPARATION METHOD THEREOF

Disclosed is a polyester fiber that can be applied to a fabric for an airbag, and particularly, to a polyester fiber having a crystallinity of 43% to 55%, an amorphous orientation factor (AOF) of 0.2 to 0.8, and a long period of 140 to 180 Å, a method of preparing the same, and a fabric for an airbag prepared therefrom. The polyester fiber of the present invention remarkably secures high strength and high elongation, and it is possible to provide superior packing properties, dimensional stability, and gas barrier effect, and to protect occupants safely by minimizing the impact applied to the occupants, when it is used for the fabric for an airbag. 1. A polyester fiber for an airbag , having a crystallinity of 43% to 55% , an amorphous orientation factor (AOF) of 0.2 to 0.8 , and a long period of 140 to 180 Å.2. The polyester fiber according to claim 1 , wherein the fiber comprises 70 mol % or more of poly(ethylene terephthalate).3. The polyester fiber according to claim 1 , wherein birefringence is 0.1 to 0.35.4. The polyester fiber according to claim 1 , wherein intrinsic viscosity is 0.7 dl/g or more.5. The polyester fiber according to claim 1 , wherein the yarn has carboxyl end group content of 30 meq/kg of less.6. The polyester fiber according to claim 1 , wherein the yarn has diethyleneglycol content of 1.1 wt % or less.7. The polyester fiber according to claim 1 , wherein the yarn has tensile strength of 6.5 g/d to 11 g/d claim 1 , and elongation at break of 13% to 35%.8. The polyester fiber according to claim 1 , wherein the yarn has dry heat shrinkage of 1% to 7% claim 1 , and toughness value of 27×10-1 g/d to 46×10-1 g/d.9. The polyester fiber according to claim 1 , wherein the yarn has single yarn fineness of 2 de to 10.5 de.10. The polyester fiber according to claim 1 , wherein the yarn has total fineness of 200 to 1 claim 1 ,000 denier.11. The polyester fiber according to claim 1 , wherein the yarn has a filament number of 50 to 240.12. A method for ...

Method for Increasing Methionine Productivity Using a Mixture of Methyl Mercaptan and Dimethyl Sulfide

The present invention relates to a method for increasing L-methionine productivity and organic acid productivity. More particularly, the present invention relates to a method which involves adding a mixture containing methyl mercaptan and dimethyl sulfide at a appropriate ratio to O-acetyl homoserine or O-succinyl homoserine and to an enzyme having an activity of converting methionine precursor into L-methionine, so as to perform an enzyme reaction, to thereby improve the conversion rate of L-methionine and organic acid from the L-methionine precursor, and thus increasing L-methionine yield as compared to conventional method. 1. A method for producing methionine , comprising:1) preparing a reaction solution that includes a methionine precursor which is an O-acetyl homoserine or an O-succinyl homoserine, an enzyme which has the activity of converting the methionine precursor into methionine, and a mixture of methyl mercaptan and dimethyl sulfide; and2) performing an enzymatic conversion reaction while stirring the reaction solution.2. The method for producing methionine according to claim 1 , wherein the methyl mercaptan is a methyl mercaptan gas or a sodium methyl mercaptan solution.3. The method for producing methionine according to claim 1 , wherein a mixing ratio of methyl mercaptan and dimethyl sulfide is a ratio of methyl mercaptan:dimethyl sulfide of 1:0.05 to 1:1.4. The method for producing methionine according to claim 3 , wherein a mixing ratio of methyl mercaptan and dimethyl sulfide is a ratio of methyl mercaptan:dimethyl sulfide of 1:0.20 to 1:1.5. The method for producing methionine according to claim 4 , wherein a mixing ratio of methyl mercaptan and dimethyl sulfide is a ratio of methyl mercaptan:dimethyl sulfide of 1:0.25 to 1:0.5.6. The method for producing methionine according to claim 1 , wherein the enzyme which has an activity of converting the methionine precursor into methionine is the one enzyme or more selected from the group consisting of ...

METHODS FOR PRODUCTION OF L-METHIONINE AND RELATED PRODUCTS

A method comprising: (a) enzymatically processing an O-acetylhomoserine (OAHS) fermentation liquor to produce L-methionine and an acetate source; (b) separating at least a portion of said L-methionine from at least a fraction of said acetate source to form separated L-methionine and a residual liquor comprising an acetate-source; and (c) recovering at least a portion of said acetate source from said residual liquor as recovered acetate. 1. A method comprising:(a) enzymatically processing an O-acetylhomoserine (OAHS) fermentation liquor to produce L-methionine and an acetate source;(b) separating at least a portion of said L-methionine from at least a fraction of said acetate source to form separated L-methionine and a residual liquor comprising an acetate-source; and(c) recovering at least a portion of said acetate source from said residual liquor as recovered acetate.2. The method according to claim 1 , further comprising using said recovered acetate as a reagent in at least one member selected from the group consisting of:(i) processing of OAHS fermentation liquor;(ii) adding said reagent as an ingredient in a fermentation medium; and(iii) using in production of a fermentation product.35-. (canceled)6. The method according to claim 2 , wherein said fermentation product is selected from the group consisting of carboxylic acids and amino acids.7. (canceled)8. The method according to claim 1 , comprising implementing at least one process claim 1 , selected from the group consisting of water removal claim 1 , active carbon treatment claim 1 , addition of a solute claim 1 , pH adjustment claim 1 , ion-exchange claim 1 , membrane filtration and contacting with at least one water-soluble organic solvent during the purification process.9. (canceled)10. The method according to claim 1 , wherein said residual liquor comprises an ammonium salt.1113-. (canceled)14. The method according to claim 1 , wherein said separating comprises crystallizing claim 1 , which comprises the ...

AIRBAG CUSHION AND AN AIRBAG SYSTEM INCLUDING THE SAME

The present invention relates to an airbag cushion and an airbag system including the same, and particularly to an airbag cushion, including: at least one fabric; and seam parts connecting the fabric, wherein deviation of upper seam thread length per a unit length of the fabric between the first seam part sewed in forward direction and the second seam part sewed in reverse direction in the seam parts is 15% or less, a method of preparing the same, and an airbag system including the same. 1. An airbag cushion , including:at least one fabric; andseam parts connecting the fabric,wherein deviation of upper seam thread length per a unit length of the fabric between the first seam part sewed in forward direction and the second seam part sewed in reverse direction in the seam parts is 15% or less.2. The airbag cushion according to claim 1 , wherein the fabric is a woven fabric or a nonwoven fabric claim 1 , including at least one thread selected from the group consisting of a nylon-based thread claim 1 , a polyester-based thread claim 1 , a polyolefin-based thread claim 1 , and an aramid-based thread.3. The airbag cushion according to claim 1 , wherein the seam thread includes at least one selected from the group consisting of a nylon-based thread claim 1 , a polyester-based thread claim 1 , a polyolefin-based thread claim 1 , and an aramid-based thread.4. The airbag according to claim 1 , wherein the seam part is formed by at least one sewing method selected from the group consisting of a single-lock claim 1 , a double-lock claim 1 , a single-chain claim 1 , and a double-chain.5. The airbag cushion according to claim 1 , wherein number of stitches of the seam parts is 20 to 80 ea/100 mm.6. The airbag cushion according to claim 1 , wherein total fineness of the seam thread is 210 to 1 claim 1 ,890 denier.7. The airbag cushion according to claim 1 , wherein seam strength of the seam parts measured according to ASTM D 1683 method is 100 to 400 kgf/inch.8. The airbag cushion ...

IN-WHEEL DRIVE APPARATUS

The present disclosure provides an in-wheel drive apparatus. The apparatus includes a motor housing open at one side thereof, a motor unit mounted within the motor housing, and a rear cover coupled at one side thereof to the motor housing to close the open side of the motor housing and coupled at the other side thereof to a trailing arm. The rear cover includes a planar section constituting an outer peripheral surface of the rear cover; and a cover recess connected to an inner peripheral surface of the planar section to be integrally formed with the planar section and depressed from the planar section towards the rotor to form a recess to which the trailing arm is coupled. 1. An in-wheel drive apparatus comprising:a motor housing open at one side thereof;a motor unit mounted within the motor housing, the motor unit comprising:a stator disposed along an inner peripheral surface of the motor housing; anda rotor rotatably disposed inside the stator, the rotor comprising a rotor shaft placed at a center of the motor housing, a magnet mounting section formed on an outer peripheral surface of the rotor and having a magnet mounted thereon to face the stator, and a connection plate connecting the rotor shaft to the magnet mounting section; anda rear cover coupled at one side thereof to the motor housing to close the open side of the motor housing and at the other side thereof to a trailing arm, the rear cover comprising:a planar section constituting an outer peripheral surface of the rear cover; anda cover recess connected to an inner peripheral surface of the planar section to be integrally formed with the planar section and depressed from the planar section towards the rotor to form a recess to which the trailing arm is coupled.2. The apparatus of claim 1 , wherein the connection plate has a smaller thickness than the magnet mounting section claim 1 , and the cover recess is depressed towards the connection plate to form the recess.3. The apparatus of claim 2 , wherein ...

POLYESTER FABRIC AND PREPARATION METHOD FOR THE SAME

The present invention relates to an airbag fabric comprising a polyester fiber, and more particularly to a polyester fabric having a thermal resistance constant (X) of 1.0 to 6.5 in the uncoated fabric state, a preparation method for the same, and an airbag for vehicle comprising the same. 1. A polyester fabric having a thermal resistance constant (X) of 1.0 to 6.5 as defined by the following calculation formula 1 when the fabric is uncoated:{'br': None, 'i': X', 'T×t', '×D, 'Thermal resistance constant()=()/(600) \u2003\u2003Calculation Formula 1wherein T is the temperature of a hot rod during free fall in the range of 350 to 750° C.; t is the amount of time (sec) taken for the hot rod to pass through the polyester fabric from a point of contact with the polyester fabric; and D is the thickness (mm) of the polyester fabric.2. The polyester fabric as claimed in claim 1 , wherein the thermal resistance constant (X) as defined by the calculation formula 1 is 1.20 to 3.5 when the temperature (T) of the hot rod is 450° C.; and 1.0 to 2.0 when the temperature (T) of the hot rod is 600° C.3. The polyester fabric as claimed in claim 1 , wherein the polyester fabric comprises a coating layer of a rubber component formed thereon claim 1 , the coated polyester fabric having a thermal resistance constant of 2.8 to 17.0.4. The polyester fabric as claimed in claim 3 , wherein the coated polyester fabric has a thermal resistance constant of 3.3 to 10.0 when the temperature (T) of the hot rod is 450° C.; and 3.0 to 7.0 when the temperature (T) of the hot rod is 600° C.5. The polyester fabric as claimed in claim 1 , wherein the polyester fabric comprises a polyester fiber having a fineness of 400 to 650 denier.6. The polyester fabric as claimed in claim 1 , wherein the polyester fabric comprises a polyester fiber having a tensile strength of at least 8.8 g/de claim 1 , a breaking elongation of 14 to 23% claim 1 , a dry shrinkage of 1.0 to 6.5% claim 1 , and a melting heat capacity ...

Polyester fiber and preparation method for the same

The present invention relates to a polyester fiber applicable to an airbag fabric, and more particularly to a polyester fiber, a preparation method for the polyester fiber, and an airbag fabric prepared from the polyester fiber, where the polyester fiber has an elongation of 0.8 to 2.0% under a tensile strength of 1.0 g/d at the room temperature, and an additional elongation of 1.5 to 5% under a tensile strength of 8.8 g/d to the maximum. The polyester fiber of the present invention which secures low initial Young's modulus and good mechanical properties can be used in an airbag fabric not only to provide excellences in air sealing effect as well as packing property and dimensional stability but also to minimize collision impacts on occupants, thereby protecting the occupants with safety.

FILM FOR A TYRE INNER LINER AND PRODUCTION METHOD THEREFOR

This invention relates to a film for a tire inner liner, which includes a copolymer including a polyamide-based segment and 5˜50 wt % of a polyether-based segment relative to the total weight of the film, and has a thickness 30˜300 μm, and to a method of manufacturing the film for a tire inner liner, including polymerizing a polyamide-based resin or its precursor with 5˜50 wt % of a polyether-based resin relative to the total weight of the film, thus preparing a copolymer, and melting and extruding the copolymer, thus forming a film. 1. A film for a tire inner liner , comprising a copolymer comprising a polyamide-based segment and 5˜50 wt % of a polyether-based segment relative to a total weight of the film , andhaving a thickness of 30˜300 μm.2. The film for a tire inner liner of claim 1 , wherein a load generated upon 100% elongation at room temperature is 0.5˜4 kgf.3. The film for a tire inner liner of claim 1 , wherein a load generated upon 200% elongation at room temperature is 1˜5 kgf.4. The film for a tire inner liner of claim 1 , wherein a load generated upon 100% elongation after heat treatment at 180° C. for 10 min is less than or equal to two times a load generated upon 100% elongation at room temperature.5. The film for a tire inner liner of claim 1 , wherein a load generated upon 100% elongation after heat treatment at 180° C. for 10 min is 6 kgf or less.6. The film for a tire inner liner of claim 1 , wherein a base of the film consists essentially of the copolymer.7. The film for a tire inner liner of claim 1 , wherein the polyamide-based segment includes a repeating unit of any one polyamide-based resin selected from the group consisting of nylon 6 claim 1 , nylon 66 claim 1 , nylon 46 claim 1 , nylon 11 claim 1 , nylon 12 claim 1 , nylon 610 claim 1 , nylon 612 claim 1 , a nylon 6/66 copolymer claim 1 , a nylon 6/66/610 copolymer claim 1 , nylon MXD6 claim 1 , nylon 6T claim 1 , a nylon 6/6T copolymer claim 1 , a nylon 66/PP copolymer claim 1 , a ...

POLYESTER FIBER AND PREPARATION METHOD THEREOF

This disclosure relates to high strength polyester fiber for industrial application such as a seat belt, webbing and the like, particularly to polyester fiber having elongation of 0.4% or more at stress of 1.0 g/d, elongation of 3.5% or more at stress of 4.0 g/d, and elongation of 6.0% or more at stress of 7.0 g/d, as measured at room temperature, and a method for manufacturing the same. 1. A polyester fiber having elongation of 0.4% or more at stress of 1.0 g/d , elongation of 3.5% or more at stress of 4.0 g/d , and elongation of 6.0% or more at stress of 7.0 g/d , as measured at room temperature.2. The polyester fiber according to claim 1 , which total fineness is 400 to 1 claim 1 ,800 denier.3. The polyester fiber according to claim 1 , wherein single yarn fineness is 8.0 DPF or more claim 1 , and the number of filaments is 50 to 240.4. The polyester fiber according to claim 1 , wherein intrinsic viscosity is 0.8 dl/g or more.5. The polyester fiber according to claim 1 , wherein tensile strength is 8.8 g/d or more claim 1 , elongation at break is 13% or more claim 1 , and dry heat shrinkage is 9% or less.6. A method for preparing the polyester fiber according to claim 1 , including the steps of:melt spinning polyester polymer having intrinsic viscosity of 1.0 dl/g or more at 270 to 310° C. to prepare undrawn polyester yarn, anddrawing the undrawn polyester yarn.7. The method according to claim 6 , wherein the drawing process is carried out with a drawing ratio of 5.0 to 6.0.8. The method according to claim 6 , wherein the polyester polymer comprises at least one inorganic additive selected from the group consisting of TiO claim 6 , SiO claim 6 , and BaSO.9. The method according to claim 8 , wherein the inorganic additive is included in the content of 100 to 1 claim 8 ,200 ppm claim 8 , based on the polyester polymer.10. A seat belt comprising the polyester fiber according to .11. The seat belt according to claim 10 , wherein the breaking strength retention of the ...

DOPE FOR SPINNING LYOCELL, METHOD FOR PREPARING LYOCELL FILAMENT FIBER, AND METHOD FOR PREPARING LYOCELL STAPLE FIBER USING THE SAME

This disclose relates to dope for spinning lyocell including cotton linter pulp and an aqueous solution of N-methylmorpholine-N-oxide (NMMO), a method for manufacturing lyocell filament fiber using the dope, lyocell filament fiber manufactured by the method, a method for manufacturing lyocell staple fiber using the dope, and lyocell staple fiber obtained by the manufacturing method. According to the present invention, fiber that exhibits a low orientation degree and fibrillation degree, and a high elongation, and thus may be applied for fiber for high grade clothing, may be provided without conducting additional processes. 1. A dope for spinning lyocell , comprising:cotton linter pulp; andan aqueous solution of N-methylmorpholine-N-oxide (NMMO).2. The dope for spinning lyocell according to claim 1 , comprising:6 to 16 wt % of the cotton linter pulp; and84 to 94 wt % of the aqueous solution of N-methylmorpholine-N-oxide.3. The dope for spinning lyocell according to claim 1 , wherein the aqueous solution of N-methylmorpholine-N-oxide comprises N-methylmorpholine-N-oxide and water in a weight ratio of 91:9 to 83:17.4. The dope for spinning lyocell according to claim 1 , wherein the cotton linter pulp comprises 99 wt % or more of alpha-cellulose.5. A method for manufacturing lyocell filament fiber claim 1 , comprising: discharging the spinning dope according to from a spinner;passing the discharged dope through a coagulation bath to coagulate it into a filament;washing the filament that has passed through the coagulation bath; anddrying the washed filament.6. The method for manufacturing lyocell filament fiber according to claim 5 , wherein the discharging of the spinning dope from a spinner is conducted at 80 to 130° C.7. The method for manufacturing lyocell filament fiber according to claim 5 , wherein the drying of the washed filament comprises applying tension of 0.1 to 1 g/d to the filament at 80 to 200° C.8. Lyocell filament fiber manufactured from the spinning ...

POLYESTER FABRICS FOR AIRBAG AND PREPARATION METHOD THEREOF

The present invention relates to an airbag fabric comprising a polyester fiber, and more particularly to a polyester fabric, a preparation method for the same, and an airbag for vehicle comprising the same, where the polyester fabric has a tensile strength Tof at least 95 kgf/inch as measured according to the ASTM D 5034 method, a tear strength Tof at least 6.5 kgf as measured according to the ASTM D 2261 TONGUE method, and the ratio (T/T) of tensile strength Tto tear strength Tin the range of 4.0 to 16.4. 118-. (canceled)21. The polyester fabric as claimed in claim 19 , wherein the polyester fabric comprises a polyester fiber having a fineness of 200 to 395 denier.22. The polyester fabric as claimed in claim 19 , wherein the polyester fabric has a cover factor of 1 claim 19 ,800 to 2 claim 19 ,300 as defined by the following calculation formula 3:{'br': None, 'Cover factor(CF)=warp density(thread/inch)×√{square root over (warp denier)}+weft density(thread/inch)×√{square root over (weft denier)}.\u2003\u2003Calculation Formula 323. The polyester fabric as claimed in claim 19 , wherein the polyester fabric has a stiffness of 1.2 kgf or less as measured according to ASTM D 4032 method.24. The polyester fabric as claimed in claim 19 , wherein the polyester fabric has a static air permeability of 2.5 cfm or less with ΔP of 125 pa claim 19 , and 10 cfm or less with ΔP of 500 pa claim 19 , as measured according to ASTM D 737 method.25. The polyester fabric as claimed in claim 19 , wherein the polyester fabric comprises a polyester fiber having a breaking elongation of 14 to 23% and a dry shrinkage of 1.0 to 6.5%.26. The polyester fabric as claimed in claim 19 , wherein the polyester fabric comprises a polyester fiber having Young's modulus at 1% elongation in the range of 75 to 95 g/de claim 19 , and Young's modulus at 2% elongation in the range of 25 to 55 g/de claim 19 , wherein the Young's modulus is measured according to ASTM D 885 method.27. The polyester fabric as ...

POLYESTER FIBER AND METHOD FOR PRODUCING SAME

Disclosed is a high strength and high elongation polyester fiber being used for anchoring, mooring, or towing a ship, and particularly is a polyester fiber wherein the recovered work ratio at the elongation corresponding to 10% of the maximum load measured at room temperature is 70% or more, the recovered work ratio at the elongation corresponding to 20% of the maximum load is 50% or more, and the recovered work ratio at the elongation corresponding to 30% of the maximum load is 40% or more, a method of preparing the same, and a polyester fiber rope including the same. 1. A polyester fiber , wherein the recovered work ratio at the elongation corresponding to 10% of the maximum load measured at room temperature is 70% or more , the recovered work ratio at the elongation corresponding to 20% of the maximum load is 50% or more , and the recovered work ratio at the elongation corresponding to 30% of the maximum load is 40% or more.2. The polyester fiber according to claim 1 , wherein the total fineness is 900 denier or more.3. The polyester fiber according to claim 1 , which is comprised of a plurality of monofilaments claim 1 , wherein the fineness of the individual monofilaments is 21 DPF or less and the total number of the filaments is 110 to 550.4. The polyester fiber according to claim 1 , wherein the tensile tenacity is 8.8 g/d or more and the elongation at break is 15% or more.5. A method of preparing the polyester fiber according to claim 1 , including the steps of:preparing a polyester undrawn fiber by melt-spinning a polyester polymer having an intrinsic viscosity of 1.2 dl/g or more at 270 to 310° C., anddrawing the polyester undrawn fiber.6. The method according to claim 5 , wherein the polyester polymer includes 70 mol % or more of polyethylene terephthalate.7. The method according to claim 5 , wherein the drawing step is carried out with the drawing ratio of 5.0 to 6.5.8. The method according to claim 5 , further including a heat-setting process of the ...

METHOD AND APPARATUS FOR PROVIDING MULTI SPECTRAL DOPPLER IMAGES

A method of providing multi spectral Doppler images, including displaying an ultrasound image of an object in a first region; setting a plurality of sample volumes in the displayed ultrasound image; obtaining a plurality of Doppler signals corresponding to the set plurality of sample volumes; and tridimensionally displaying in a second region the multi spectral Doppler images that are generated based on the obtained plurality of Doppler signals. 1. A method of providing multi spectral Doppler images , the method comprising:displaying an ultrasound image of an object in a first region;setting a plurality of sample volumes in the displayed ultrasound image;obtaining a plurality of Doppler signals corresponding to the set plurality of sample volumes; andtridimensionally displaying in a second region the multi spectral Doppler images that are generated based on the obtained plurality of Doppler signals.2. The method of claim 1 , wherein the displaying comprises displaying the multi spectral Doppler images in the form of a perspective view in a single graph.3. The method of claim 1 , wherein the multi spectral Doppler images comprises a plurality of vector Doppler images.4. The method of claim 1 , further comprising:setting colors corresponding to the set plurality of sample volumes; andapplying the set colors to the multi spectral Doppler images and displaying the multi spectral Doppler images.5. The method of claim 1 , further comprising:further setting a sample volume to the displayed ultrasound image; andfurther and tridimensionally displaying a Doppler image corresponding to the further set sample volume in the second region.6. The method of claim 1 , further comprising:deleting a sample volume from the displayed ultrasound image; anddeleting a Doppler image corresponding to the deleted sample volume from the second region.7. The method of claim 1 , wherein the displaying comprises rotating the multi spectral Doppler images by 360 degrees and displaying the multi ...

POLYESTER YARN AND A PRODUCTION METHOD THEREFOR

Disclosed is a polyester yarn, wherein a room-temperature strength-elongation index (X) indicating a ratio (T/S) of tensile strength (T) to tensile elongation (S) of the polyester yarn, measured at room temperature, and a primary high-humidity strength-elongation index (X) indicating a ratio (T/S) of tensile strength (T) to tensile elongation (S) of the polyester yarn, measured after heat-treating the polyester yarn under conditions of a temperature of 85° C. and a relative humidity (RH) of 95±5% for 168 hours, are optimized in a predetermined range. 1. A polyester yarn , wherein a room-temperature strength-elongation index (X) indicating a ratio (T/S) of tensile strength (T) to tensile elongation (S) of the polyester yarn , measured at room temperature; and a primary high-humidity strength-elongation index (X) indicating a ratio (T/S) of tensile strength (T) to tensile elongation (S) of the polyester yarn , measured after heat-treating the polyester yarn under conditions of a temperature of 85° C. and a relative humidity of 95±5% for 168 hours , are represented by Calculation Formula 1 below:{'br': None, 'sup': 1', '0, '0.65≦X/X≦0.93\u2003\u2003Calculation Formula 1'}{'sup': 0', '0', '0', '0', '0, 'wherein Xis a room-temperature strength-elongation index indicating a ratio (T/S) of tensile strength (T) to tensile elongation (S) of the polyester yarn, measured at room temperature; and'}{'sup': 1', '1', '1', '1', '1, 'Xis a primary high-humidity strength-elongation index indicating a ratio (T/S) of tensile strength (T) to tensile elongation (S) of the polyester yarn, measured after heat-treating the polyester yarn under conditions of a temperature of 85° C. and a relative humidity of 95±5% for 168 hours.'}2. The polyester yarn of claim 1 , wherein a room-temperature strength-elongation index (X) indicating a ratio (T/S) of tensile strength (T) to tensile elongation (S) of the polyester yarn claim 1 , measured at room temperature; and a secondary high-humidity ...

FILM FOR A TIRE INNER LINER AND PREPARATION METHOD THEREFOR

The present invention relates to a film for a tire inner liner including: a base film layer including polyamide-based resin and a copolymer including a polyamide-based segment and a polyether-based segment; and an adhesive layer including a resorcinol-formalin-latex (RFL)-based adhesive, wherein there is little difference between properties in an MD (machine direction) and a TD (transverse direction), and a method for preparing a film for a tire inner liner, including melting the polyamide-based resin and the copolymer at 230 to 300° C., extruding the molten substance under specific die gap conditions to form a base film, and forming an adhesive layer including a resorcinol-formalin-latex (RFL)-based adhesive on the base film. 1. A film for a tire inner liner comprising:a base film layer comprising a polyamide-based resin and a copolymer comprising a polyamide-based segment and a polyether-based segment; andan adhesive layer formed on at least one side of the base film layer and comprising a resorcinol-formalin-latex (RFL)-based adhesive,wherein the content of the polyether-based segment of the copolymer is 15 to 50 wt % based on total weight of the base film layer, andthe ratio of tensile modulus in a second direction to tensile modulus in a first direction at initial 2% elongation of the base film layer is 0.9 to 1.1, the second direction being perpendicular to the first direction.2. The film for a tire inner liner according to claim 1 , wherein a ratio of yield strength in the second direction to yield strength in the first direction of the base film is 0.9 to 1.1 claim 1 , the second direction being perpendicular to the first direction.3. The film for a tire inner liner according to claim 1 , wherein flat elongation in the first direction and flat elongation in the second direction of the base film layer are respectively 150% or more claim 1 , the second direction being perpendicular to the first direction claim 1 , anda ratio of flat elongation in the second ...

FILM FOR A TIRE INNER LINER AND PREPARATION METHOD THEREFOR

The present invention relates to a film for a tire inner liner, particularly to a film for a tire inner liner including: a base film including a copolymer or a mixture of polyamide-based resin and a polyether-based resin; and an adhesive layer including a resorcinol-formalin-latex (RFL)-based adhesive, wherein the base film has a tensile recovery rate of 30% to 80%. The film for a tire inner liner of the present invention may exhibit an excellent gas barrier property with a thin thickness, and thus enables light weight of a tire and improvement in automobile mileage, and enables easier forming during a tire manufacturing process. 1. A film for a tire inner liner comprising:a base film layer comprising a copolymer comprising a polyamide-based segment and a polyether-based segment, and a polyamide-based resin; andan adhesive layer formed on at least one side of the base film layer and comprising a resorcinol-formalin-latex (RFL)-based adhesive, {'br': None, 'i': L', '−L', 'L', '−L, 'sub': 1', '2', '1', '0, 'Tensile Recovery Rate(%)=()*100/()\u2003\u2003[Formula 1]'}, 'wherein a tensile recovery rate of the base film layer according to the following Formula 1 is 30% to 80%{'sub': 1', '2', '0, 'in Formula 1, Ldenotes the length of the base film at 100% elongation at room temperature, Ldenotes the final length of the base film when the base film is shrunken after 100% elongation at room temperature, and Ldenotes the length of the original sample before elongation.'}2. The film for a tire inner liner according to claim 1 , wherein the content of the polyether-based segment of the copolymer is 15 to 50 wt % based on total weight of the base film layer.3. The film for a tire inner liner according to claim 1 , wherein the polyamide-based resin has relative viscosity (96% sulfuric acid solution) of 3.0 to 3.5.4. The film for a tire inner liner according to claim 1 , wherein the copolymer comprising the polyamide-based segment and the polyether-based segment has an absolute ...

POLISHING PAD AND METHOD OF MANUFACTURING THE SAME

Polishing pad and method of manufacturing the same, the method including: (a) mixing materials for forming a polishing layer; (b) mixing at least two from among inert gas, a capsule type foaming agent, a chemical foaming agent, and liquid microelements that are capable of controlling sizes of pores, with the mixture in (a) so as to form two or more types of pores; (c) performing gelling and hardening of the mixture generated in (b) so as to form a polishing layer including the two or more types of pores; and (d) processing the polishing layer so as to distribute micropores defined by opening the two or more types of pores on a surface of the polishing layer. 1. A method of manufacturing a polishing pad , the method comprising:(a) mixing materials for forming a polishing layer;(b) mixing at least two from among inert gas, a capsule type foaming agent, a chemical foaming agent, and liquid microelements that are capable of controlling sizes of pores, with the mixture in (a) so as to form two or more types of pores;(c) performing gelling and hardening of the mixture generated in (b) so as to form a polishing layer comprising the two or more types of pores; and(d) processing the polishing layer so as to distribute micropores defined by opening the two or more types of pores on a surface of the polishing layer.2. The method of claim 1 , wherein the inert gas is selected from the group consisting of 8 group elements of a periodic table and gas that does not react with the materials for forming the polishing layer.3. The method of claim 1 , wherein a liquid material that constitutes the liquid microelements comprises at least one selected from the group consisting of aliphatic mineral oil claim 1 , aromatic mineral oil claim 1 , a silicon oil which does not have a hydroxyl group at the end of molecules claim 1 , soybean oil claim 1 , coconut oil claim 1 , palm oil claim 1 , cotton seed oil claim 1 , camellia oil claim 1 , hardened oil claim 1 , or a combination thereof.4. A ...

POLYESTER FIBER AND METHOD FOR PREPARING THE SAME

This disclosure relates to polyester fiber that can be used for an airbag fabric. Particularly, the present invention relates to a polyester fiber that has elongation of 1.65% to 2.5% when tensile strength of 1.0 g/d is applied after heat treatment at 185° C. for 2 minutes, and additionally elongates in the range of elongation from 0.5% to 5% at the range of tensile strength from 8.0 g/d to the maximum strength. Also disclosed is a method for preparing the same, and fabric for an airbag prepared therefrom. The polyester fiber simultaneously has low initial Young's modulus and excellent mechanical properties, and thus, it may provide excellent packing, dimensional stability, and excellent air cut-off effect, and simultaneously, minimize impact applied to a passenger thus safely protecting a passenger. 1. A polyester fiber having elongation of 1.65% to 2.5% when tensile strength of 1.0 g/d is applied after heat treatment at 185° C. for 2 minutes , which additionally elongates in the range of elongation from 0.5% to 5% at the range of tensile strength from 8.0 g/d to the maximum strength.2. The polyester fiber according to claim 1 , wherein the polyester fiber has elongation of 16% to 22% when tensile strength of 5.0 g/d is applied after heat treatment at 185° C. for 2 minutes.3. The polyester fiber according to claim 1 , wherein the polyester fiber has elongation of 0.8% to 2.0% when tensile strength of 1.0 g/d is applied at room temperature claim 1 , and additionally elongates in the range of elongation from 1.5% to 5% at the range of tensile strength from 8.8 g/d to the maximum strength.4. The polyester fiber according to claim 1 , wherein the polyester fiber has elongation of 6.5% to 13.5% when tensile strength of 5.0 g/d is applied at room temperature.5. The polyester fiber according to claim 1 , wherein the polyester fiber has tensile strength of 4.5 g/d or more at elongation of 20% after heat treatment at 185° C. for 2 minutes.6. The polyester fiber according to ...

POLYESTER YARN AND PRODUCTION METHOD THEREOF

Disclosed is a polyester yarn that can be used in a fabric for an airbag. In particular, a polyester yarn having a diethylene glycol content of 1.1 to 2.5 wt % and initial modulus of 100 g/d or less, a production method thereof, and a fabric for an airbag produced therefrom are disclosed. The polyester yarn has excellent moisture and heat resistance and light resistance, and maintained excellent mechanical properties after long-term aging under high temperature and high humidity conditions. Therefore, when applied to a fabric for an airbag, the polyester yarn provides excellent packing property, shape stability, and gas barrier effect, and the impact applied to a passenger is minimized, thereby safely protecting the passenger at the same time. 1. A polyester yarn having a diethylene glycol content of 1.1 to 2.65 wt % and an initial modulus of 100 g/d or less.2. The polyester yarn according to claim 1 , wherein the polyester yarn has an intrinsic viscosity of 0.8 dl/g or more.3. The polyester yarn according to claim 1 , wherein the polyester yarn has a carboxyl end group content of 40 meq/kg or less.4. The polyester yarn according to claim 1 , wherein the polyester yarn has crystallinity of 40% to 55%.5. The polyester yarn according to claim 1 , wherein the polyester yarn has a tensile strength of 6.5 g/d or more claim 1 , and a breaking elongation of 13% or more.6. The polyester yarn according to claim 1 , wherein the polyester yarn has a dry contraction ratio of 4% or more and toughness of 30×10g/d or more.7. The polyester yarn according to claim 1 , wherein an elongation of the polyester yarn is 0.5% or more at a stress of 1.0 g/d claim 1 , 4.3% or more at a stress of 4.0 g/d claim 1 , and 7.5% or more at a stress of 7.0 g/d claim 1 , at room temperature.8. The polyester yarn according to claim 1 , wherein the yarn has a single yarn fineness of 0.5 to 20 denier.9. The polyester yarn according to claim 1 , wherein the yarn has a total fineness of 200 to 1 claim 1 , ...

POLYESTER YARN AND PRODUCTION METHOD THEREOF

Disclosed is a polyester yarn which can be used in a fabric for an airbag. A content of one or more inorganic fillers selected from the group consisting of TiO, SiO, and BaSOis 200 ppm or less, a breaking elongation is 15% or more, a dry shirinkage rate is 3% or more, and the sum of the breaking elongation and the dry shirinkage rate is 20% or more, a production method thereof, and a fabric for an airbag produced therefrom. The polyester yarn has remarkably reduced stiffness and excellent mechanical properties of high strength, high elongation, and high shirinkage. 1. A polyester yarn , wherein the content of one or more inorganic fillers selected from the group consisting of TiO , SiO , and BaSOis 200 ppm or less , a breaking elongation is 15% or more , a dry shirinkage rate is 3% or more , and the sum of the breaking elongation and the dry shirinkage rate is 20% or more.2. The polyester yarn according to claim 1 , wherein an intrinsic viscosity is 0.8 dl/g or more.3. The polyester yarn according to claim 1 , wherein a crystallinity is 42% to 52%4. The polyester yarn according to claim 1 , wherein a tenacity is 9.0 g/d or more and a toughness value is 30×10g/d or more.5. The polyester yarn according to claim 1 , wherein the yarn has a single yarn fineness of 0.5 to 20 denier.6. The polyester yarn according to claim 1 , wherein the yarn has a total fineness of 200 to 1 claim 1 ,000 denier.7. The polyester yarn according to claim 1 , wherein the yarn has the number of filaments of 50 to 240.8. A method for producing the polyester yarn according to claim 1 , comprising the steps of:{'sub': 2', '2', '4, 'melt-spinning a polyester polymer having a content of one or more inorganic fillers selected from the group consisting of TiO, SiO, and BaSOof 200 ppm or less at 270 to 300° C. so as to prepare an undrawn polyester yarn, and'}drawing the undrawn polyester yarn.9. The method according to claim 8 , wherein the polyester polymer includes 70 mol % or more of poly(ethylene ...

SIDE CURTAIN AIRBAG AND AIRBAG SYSTEM COMPRISING THE SAME

Disclosed is a side curtain airbag and an airbag system including the same. The side curtain airbag according to the present invention comprises an inflating part having gas inflation, a non-inflating part supporting the inflating part, and an adhered part constituting a boundary between the inflating part and the non-inflating part. The adhered part is coated with a seam sealant and sewed. The initial maximum pressure of the inflating part is 40 kPa or more when injecting a gas therein with an instant pressure of at least 10 bar, and the pressure after 6 seconds is 25 kPa or more. The side curtain airbag may optimize to apply the method of seam sealant coating and sewing on the adhered part constituting a boundary between the inflating part and the non-inflating part. Thus, it can keep the internal gas pressure of the airbag to the extent of protecting passengers safely at rollover. 1. A side curtain airbag comprising:an inflating part having gas inflation;a non-inflating part supporting the inflating part; andan adhered part constituting a boundary between the inflating part and the non-inflating part,{'sup': 2', '2, 'b': '55', 'wherein the adhered part is coated with a seam sealant in the amount of 35 g/mto 150 g/mto have a thickness in range of 0.5 mm to 1.3 mm and a width in range of 7 mm to 12 mm, and sewed with a thread having 420 to 1260 deniers to have a stitch number in range of 30 stiches/100 mm to stiches/100 mm,'}wherein the seam sealant is room temperature vulcanizable and two-component liquid type, andwherein the initial maximum pressure of the inflating part is 40 kPa or more when injecting a gas therein with an instant pressure of at least 10 bar, and the pressure after 6 seconds is 25 kPa or more.2. The side curtain airbag of claim 1 , which is made of at least one fabric selected from the group consisting of nylon fabric claim 1 , polyester fabric claim 1 , polyphenylene sulfide fabric claim 1 , polyethylene 2 claim 1 ,6-naphthalate fabric claim 1 ...

Polyester yarn and polyester fabric including the same

The present invention relates to a polyester yarn which can be used in a fabric for an airbag. More particularly, the present invention relates to a polyester yarn for an airbag having a modulus of 60 g/d or less in the elongation range of 2.0-3.0%, a modulus of 45-70 g/d in the elongation range of 9.0-11.0%, and a modulus of 60 g/d or more in the elongation range of 12.0-14%, and a fabric for an airbag including the same. When the polyester yarn is used in the fabric for an airbag, it provides excellent packing property, excellent occupant-protection performance upon collision, and gas barrier effect, and also minimizes the impact applied to the occupant, thereby safely protecting the occupant.

POLYESTER FABRIC AND PRODUCTION METHOD THEREOF

The present invention relates to a fabric for an airbag, and a production method thereof. More particularly, the present invention relates to a polyester fabric which includes a high-strength, high-elongation and low-modulus polyester yarn to show excellent toughness and energy absorbing performance after high-humidity heat treatment for a long period of time, a production method thereof, and an airbag for an automobile including the same. 1. A polyester fabric , comprising a polyester yarn having a fineness of 300 to 700 denier , and having 0.8 or more of a PTSRIindex in the warp direction of the fabric as shown in the following Equation 1 , 0.8 or more of a PTSRIindex in the weft direction of the fabric as shown in the following Equation 2 , 0.8 or more of a PSSRIindex in the warp direction of the fabric as shown in the following Equation 3 , and 0.8 or more of a PSSRIindex in the weft direction of the fabric as shown in the following Equation 4:{'br': None, 'sup': wa', 'wa', 'wa, 'sub': '3000', 'PTSRI=PTS/PTS\u2003\u2003[Equation 1]'}{'br': None, 'sup': we', 'we', 'we, 'sub': '3000', 'PTSRI=PTS/PTS\u2003\u2003[Equation 2]'}{'br': None, 'sup': wa', 'wa', 'wa, 'sub': '3000', 'PSSRI=PSS/PSS\u2003\u2003[Equation 3]'}{'br': None, 'sup': we', 'we', 'we, 'sub': '3000', 'PSSRI=PSS/PSS\u2003\u2003[Equation 4]'}{'sup': wa', 'we, "wherein PTSRIand PTSRIrepresent a polyester tearing strength retention index (PTSRI) in the warp and weft directions of the fabric, which is measured after heat treatment at 110° C. for 3,000 hours in accordance with Autoliv's test standard E668992 for a fabric for an airbag, respectively,"}{'sup': wa', 'we, "PSSRIand PSSRIrepresent a polyester seam strength retention index (PSSRI) in the warp and weft directions of the fabric, which is measured after heat treatment at 110° C. for 3,000 hours in accordance with Autoliv's test standard E668992 for a fabric for an airbag, respectively,"}{'sup': wa', 'we, "PTSand PTSrepresent a polyester tear ...

GAS-INFLATABLE DOUBLE-LAYERED FABRIC AND A PREPARATION METHOD THEREOF

The present invention relates to a double-layered fabric including separated two fabric layers which are simultaneously woven by an OPW (one piece woven) method. Specifically, the present invention relates to a gas-inflatable double-layered fabric including a double patterned weave comprised of separated top and bottom fabric layers which are simultaneously woven and have different patterns each other, a preparation method thereof, and an airbag including the same. 1. A gas-inflatable double-layered fabric , including a double patterned weave comprised of separated top and bottom fabric layers which are simultaneously woven and have different patterns each other.2. The gas-inflatable double-layered fabric according to claim 1 , wherein the top and bottom fabric layers include a 1×1 weave claim 1 , a 2×2 weave claim 1 , a 3×3 weave claim 1 , a stain weave claim 1 , a warp rib weave claim 1 , a weft rib weave claim 1 , or a mixed weave thereof claim 1 , respectively.3. The gas-inflatable double-layered fabric according to claim 1 , wherein the weaves of the top fabric layer and the bottom fabric layer of the double patterned weave are composed as follows:the weave of the top fabric layer is a 1×1 weave and the weave of the bottom fabric layer is a 2×2 weave, a 3×3 weave, a stain weave, a warp rib weave, a weft rib weave, or a mixed weave thereof;the weave of the top fabric layer is a 2×2 weave and the weave of the bottom fabric layer is a 1×1 weave, a 3×3 weave, a stain weave, a warp rib weave, a weft rib weave, or a mixed weave thereof;the weave of the top fabric layer is a 3×3 weave and the weave of the bottom fabric layer is a 1×1 weave, a 2×2 weave, a stain weave, a warp rib weave, a weft rib weave, or a mixed weave thereof;the weave of the top fabric layer is a stain weave and the weave of the bottom fabric layer is a 1×1 weave, a 2×2 weave, a 3×3 weave, a warp rib weave, a weft rib weave, or a mixed weave thereof;the weave of the top fabric layer is a warp rib ...

AIRBAG CUSHION AND AN AIRBAG SYSTEM INCLUDING THE SAME

The present invention relates to an airbag cushion and an airbag system including the same, and particularly to an airbag cushion, including: at least one fabric; and seam parts connecting the fabric, wherein deviation of upper seam thread length per a unit length of the fabric between the first seam part sewed in forward direction and the second seam part sewed in reverse direction in the seam parts is 15% or less, a method of preparing the same, and an airbag system including the same. The airbag cushion of the present invention is superior in working stability and unfolding performance because of the optimized properties of the seam parts, provides superior shape stability and air-tight effect at the same time, and can protect a passenger by minimizing the shock given to the passenger. 1. A method of preparing an airbag cushion , including the steps of:cutting at least one fabric; andsewing the fabrics so as to connect each other,wherein the sewing step is controlled so that tension of upper seam thread when sewing in reverse direction is 105% to 140%, compared to tension of upper seam thread when sewing in forward direction.2. The method according to claim 1 , wherein the sewing process is carried out by at least on sewing method selected from the group consisting of a single-lock claim 1 , a double-lock claim 1 , a single-chain claim 1 , and a double-chain.3. The method according to claim 1 , wherein the sewing process is controlled so that number of stitches of the seam parts is 20 to 80 ea/100 mm.4. A sewing machine for an airbag cushion claim 1 , equipped witha needle for sewing fabrics, anda main thread controller providing tension to an upper seam thread and a sub thread controller providing a preliminary tension to the upper seam thread provided to the main thread controller in the path of the upper seam thread from a thread supplying source to the needle; andfurther including a control means for minutely controlling the preliminary tension according to ...

LYOCELL MATERIAL FOR CIGARETTE FILTER, AND PREPARATION METHOD THEREFOR

This invention relates to a method of manufacturing a lyocell material for a cigarette filter, including (S) spinning a lyocell spinning dope composed of 8 to 13 wt % of a cellulose pulp and 87 to 92 wt % of an N-methylmorpholine-N-oxide (NMMO) aqueous solution; (S) coagulating the lyocell spinning dope spun in (S), thus obtaining a lyocell multifilament; (S) water-washing the lyocell multifilament obtained in (S); (S) oiling the lyocell multifilament water-washed in (S); and (S) applying steam and pressure to the lyocell multifilament obtained in (S), thus obtaining a crimped tow having 30 to 40 crimps per inch. 1. A method of manufacturing a lyocell material for a cigarette filter , comprising:{'b': '1', '(S) spinning a lyocell spinning dope comprising 8 to 13 wt % of a cellulose pulp and 87 to 92 wt % of an N-methylmorpholine-N-oxide (NMMO) aqueous solution;'}{'b': 2', '1, '(S) coagulating the lyocell spinning dope spun in (S), thus obtaining a lyocell multifilament;'}{'b': 3', '2, '(S) water-washing the lyocell multifilament obtained in (S);'}{'b': 4', '3, '(S) oiling the lyocell multifilament water-washed in (S); and'}{'b': 5', '4, '(S) applying steam and pressure to the lyocell multifilament obtained in (S), thus obtaining a crimped tow having 30 to 40 crimps per inch.'}21. The method of claim 1 , wherein in the lyocell spinning dope of (S) claim 1 , the cellulose pulp comprises 85 to 99 wt % of alpha-cellulose and has a degree of polymerization (DPw) of 600 to 1700.32. The method of claim 1 , wherein the coagulating in (S) comprises primary coagulation using air quenching (Q/A) including supplying cold air to the spinning dope and secondary coagulation including immersing the primarily coagulated spinning dope in a coagulation solution.4. The method of claim 3 , wherein the air quenching is performed by supplying the cold air at a temperature of 4 to 15° C. and a wind velocity of 30 to 120 m/s to the spinning dope claim 3 , andthe coagulation solution has a ...

MASTER CYLINDER OF BRAKE FOR VEHICLE

A master cylinder of a brake for a vehicle may include: a housing having a port through which oil is transferred; a motor connected to the housing so as to supply rotary power; a screw rotatably installed in the motor, and rotated by the rotary power received from the motor; a moving piston engaged with the outside of the screw, and moved in the longitudinal direction of the housing by the rotation of the screw; and a fixed piston fixed to the inside of the housing, and having the moving piston positioned on the outside thereof. 1. A master cylinder of a brake for a vehicle , comprising:a housing having a port through which oil is transferred;a motor connected to the housing so as to supply rotary power;a screw rotatably installed in the motor, and rotated by the rotary power received from the motor;a moving piston engaged with the outside of the screw, and moved in the longitudinal direction of the housing by the rotation of the screw; anda fixed piston fixed to the inside of the housing, and having the moving piston positioned on the outside thereof.2. The master cylinder of claim 1 , wherein the motor comprises:a fixed part fixed to the housing and having magnetism changed by power supply; anda motor rotating part connected to the screw, rotated with the screw, and rotated according to the change in magnetism of the fixed part.3. The master cylinder of claim 2 , wherein the fixed part comprises:a fixed frame fixed to one side of the housing; anda stator installed in the fixed frame facing the motor rotating part, and configured to generate magnetism.4. The master cylinder of claim 3 , wherein the motor rotating part comprises:a rotating frame rotatably installed in the fixed frame, and installed in a shape to cover an end of the moving piston; anda rotor installed outside the rotating frame facing the fixed part, and having magnetism.5. The master cylinder of claim 4 , wherein the rotating frame and the screw are spline-joined to transfer power.6. The master ...

Method for Increasing the Solubility of Methionine by Mineral Addition and Acid Treatment

The present invention relates to a method for enhancing the solubility of methionine. More particularly, the present invention relates to a method for increasing the solubility of methionine, in which mineral and sulfuric acid are added at an appropriate ratio to enhance the methionine solubility, thereby overcoming the problem of low solubility of methionine in water. 1. A method for increasing the solubility of methionine to produce methionine solution , comprising:step 1 of adding a mineral containing one or more bivalent metal ions to a methionine-containing solution; andstep 2 of adding acid to the methionine-containing solution obtained in step 1.2. The method according to claim 1 , wherein the bivalent metal ion is one or more selected from the group consisting of Fe claim 1 , Cu claim 1 , Mg claim 1 , Mn claim 1 , Cu claim 1 , and Zn.3. The method according to claim 1 , wherein the mineral containing bivalent metal ion is one or more selected from the group consisting of iron sulfide claim 1 , manganese sulfide claim 1 , and zinc sulfide.4. The method according to claim 1 , wherein the acid is sulfuric acid.5. The method according to claim 1 , wherein the methionine is DL-methionine or L-methionine.6. The method according to claim 1 , wherein the methionine-containing solution is a solution containing L-methionine produced by fermentation or enzymatic conversion.7. The method according to claim 1 , wherein the amount of mineral added to the solution is to achieve the concentration of 1 to 10% based on the total volume of the methionine-containing solution.8. The method according to claim 1 , wherein the amount of acid added to the methionine-containing solution is to achieve the concentration of 0.01 to 0.5 M.9. A high concentration of methionine solution with increased methionine solubility according to the method of . This application is a continuation of U.S. patent application Ser. No. 13/203,539, which is a 35 U.S.C. §371 national phase application of ...

LYOCELL FIBER AND MANUFACTURING METHOD THEREFOR

The present invention relates to a lyocell fiber, and more specifically to a lyocell fiber, wherein the cross-sectional shape of a monofilament contained in the lyocell fiber is controlled to thus increase the specific surface area of the fiber, thereby exhibiting properties equal or superior to those of conventional lyocell fibers, even when used in a small amount. 1. A lyocell fiber having a multi-lobal cross-section , comprising a lyocell multifilament manufactured by spinning a lyocell spinning dope including a cellulose pulp and an ionic solvent ,the multifilament comprising a monofilament having a multi-lobal cross-section,the multi-lobal cross-section of the monofilament including a plurality of projections, andthe plurality of projections coming into contact with a first virtual circle and a second virtual circle included in the first virtual circle, being integrally formed with the second virtual circle serving as a center, and coming into contact with the first virtual circle at ends thereof.2. The lyocell fiber of claim 1 , wherein the multi-lobal cross-section has a multi-lobal ratio of 1.5 to 10 claim 1 , as defined in Equation 1 below:{'br': None, 'i': r', 'r, 'Multi-lobal ratio=1/2\u2003\u2003'}wherein r1 is a radius of the first virtual circle and r2 is a radius of the second virtual circle.3. The lyocell fiber of claim 2 , wherein the lyocell fiber has a fineness of 1 to 30 denier claim 2 , the radius of the first virtual circle is 4 to 40 μm claim 2 , and the radius of the second virtual circle is 2 to 14 μm.4. The lyocell fiber of claim 1 , wherein the lyocell fiber has a space occupancy of 200 to 600% claim 1 , as defined by Equation 2 below:{'br': None, 'i': S', 'S, 'Space occupancy=(1/2)×100(%)\u2003\u2003'}wherein S1 is an area of the first virtual circle and S2 is a cross-sectional area of the monofilament contained in the lyocell fiber.5. The lyocell fiber of claim 1 , wherein the cellulose pulp contains 85 to 98 wt % ...

CUT RESISTANT POLYETHYLENE YARN, METHOD FOR MANUFACTURING THE SAME, AND PROTECTIVE ARTICLE PRODUCED USING THE SAME

The present disclosure relates to a polyethylene yarn that enables the production of protective article capable of providing excellent wearability while having high cut resistance, a method for manufacturing the same, and a protective article produced using the same. 1. A polyethylene yarn having a weight average molecular weight of 80 ,000 to 180 ,000 g/mol , an initial modulus of 100 to 250 g/d and an elongation of 6 to 10%.2. The polyethylene yarn according to claim 1 ,wherein the initial modulus is 120 to 200 g/d.3. The polyethylene yarn according to claim 1 ,wherein a dry heat shrinkage at 100° C. is more than 2.5% and 6.0% or less.4. The polyethylene yarn according to claim 1 ,wherein a ratio of the storage elastic modulus at 50° C. to the storage elastic modulus at 30° C. is 65 to 75%,a ratio of the storage elastic modulus at 80° C. to the storage elastic modulus at 30° C. is 30 to 45%, anda ratio of the storage elastic modulus at 105° C. to the storage elastic modulus at 30° C. is 10 to 25%.5. The polyethylene yarn according to claim 1 ,wherein the polyethylene yarn comprises 40 to 500 filaments each having a fineness of 1 to 3 denier, and has a total fineness of 100 to 1,000 denier.6. A method for manufacturing a polyethylene yarn comprising the steps of:melting a polyethylene chip having a melt index (MI) (at 190° C.) of 0.3 to 3 g/10 min to obtain a polyethylene melt;extruding the polyethylene melt through a spinneret with a plurality of nozzle holes;cooling a plurality of filaments formed when the polyethylene melt is discharged from the nozzle holes;converging the cooled filaments to form a multifilament yarn;drawing and heat setting the multifilament yarn at a total draw ratio of 8 to 20 times; andwinding the drawn and heat set multi-filament yarn,wherein the drawing step is performed in a multi-stage drawing manner, and a relaxation rate at the final drawing during the multi-stage drawing is 3% to 8%.7. The method for manufacturing a polyethylene yarn ...

LOAD SUPPORTING STRUCTURE OF ELECTRIC BOOSTER TYPE BRAKE APPARATUS

A load supporting structure of an electric booster type brake apparatus, includes: a housing including a rear housing member and a front housing member so as to define a receiving space therein; a ball screw shaft rotatably installed in the receiving space of the housing; a rotor installed at one side of the ball screw shaft so as to transmit torque; a first bearing installed between the rear housing member and one side of the rotor and configured to support a radial direction load due to a hydraulic reaction force; and a second bearing installed between the front housing member and the other side of the rotor and configured to support an axial direction load due to a hydraulic reaction force. Therefore, the number of components and the thickness of the housing are reduced, and therefore weight reduction of the electric booster type brake apparatus may be implemented. 1. A load supporting structure of an electric booster type brake apparatus , comprising:a housing comprising a rear housing member and a front housing member so as to define a receiving space therein;a ball screw shaft rotatably installed in the receiving space of the housing;a rotor installed at one side of the ball screw shaft so as to transmit torque;a first bearing installed between the rear housing member and one side of the rotor and configured to support a radial direction load due to a hydraulic reaction force; anda second bearing installed between the front housing member and the other side of the rotor and configured to support an axial direction load due to the hydraulic reaction force.2. The load supporting structure of claim 1 , wherein one side of the rotor claim 1 , which is bent in an axial direction claim 1 , and the other side of the rotor claim 1 , which is bent in a direction opposite to the direction in which the one side is bent claim 1 , are supported by the first bearing and the second bearing claim 1 , respectively.3. The load supporting structure of claim 2 , wherein the first ...

GOLD COATED COPPER FILM AND METHOD FOR MANUFACTURING SAME

This invention relates to a gold coated copper layer, comprising: a metal layer formed of a copper-containing material; a metal protective layer positioned on the metal layer and formed of brass, manganese brass, phosphor bronze, delta metal, naval brass, aluminum-brass alloy, copper-tin alloy, bronze, or copper-lead alloy; and a gold layer on the metal protective layer. 1. A gold coated copper film comprising:a metal layer formed of a copper-containing material;a metal protective layer positioned on the metal layer and formed of brass, manganese brass, phosphor bronze, delta metal, naval brass, aluminum-brass alloy, copper-tin alloy, bronze, or copper-lead alloy; anda gold layer on the metal protective layer.2. The gold coated copper film of claim 1 , wherein the metal layer is formed of a rolled copper foil claim 1 , an electrolytic copper foil claim 1 , or a copper foil for battery.3. The gold coated copper film of claim 1 , wherein the metal layer has a thickness ranging from 10 μm to 100 μm claim 1 , the metal protective layer has a thickness ranging from 200 Å to 1000 Å claim 1 , and the gold layer has a thickness ranging from 200 Å to 1000 Å.4. A method for manufacturing a gold coated copper film claim 1 , comprising:forming a metal protective layer through a roll-to-roll sputtering on a metal layer formed of a copper-containing material; andforming a gold layer on the metal protective layer through a roll-to-roll sputtering, wherein the metal protective layer is formed of brass, manganese brass, phosphor bronze, delta metal, naval brass, aluminum-brass alloy, copper-tin alloy, bronze, or copper-lead alloy.5. The method of claim 4 , wherein the metal layer is formed of a rolled copper foil claim 4 , an electrolytic copper foil claim 4 , or a copper foil for battery.6. The method of claim 4 , further comprising forming a connecting part for connecting terminals of components and the gold layer on the gold layer through a soldering process on the gold layer. ...

Medical device, reader of the medical device, and method of controlling the medical device

Disclosed herein is a medical device including a reader to recognize a command code, and a main body to perform a function matched to the command code recognized by the reader. The medical device may have a small size and be produced at low cost.

METHOD FOR PREPARING LOW-MOLECULAR LIGNIN DERIVATIVE

A method of preparing a low-molecular lignin derivative comprises the step of: preparing lignin by hydrolyzing lignocellulosic biomass with an acid; preparing a first mixture by mixing 100 parts by weight of the lignin and 500 parts or more by weight of a phenolic compound; preparing a second mixture by mixing the first mixture with a solvent including the hydrophobic polar solvent; and recovering a low-molecular lignin derivative from the second mixture. 1. A preparation method of a low-molecular lignin derivative , the method comprising:preparing lignin by hydrolyzing lignocellulosic biomass with an acid;preparing a first mixture by mixing 100 parts by weight of the lignin and 500 parts by weight or more of a phenolic compound;preparing a second mixture by mixing the first mixture with a solvent including a hydrophobic polar solvent; andrecovering a low-molecular lignin derivative from the second mixture.2. The preparation method according to claim 1 , wherein the acid hydrolyzing lignocellulosic biomass comprises hydrochloric acid.3. The preparation method according to claim 1 , wherein the lignin comprises a dry lignin powder obtained by neutralizing claim 1 , drying claim 1 , and pulverizing a lignin separated from an - hydrolysate of lignocellulosic biomass.4. The preparation method according to claim 1 , wherein the phenolic compound is one or more selected from the group consisting of phenol claim 1 , o-cresol claim 1 , m-cresol claim 1 , p-cresol claim 1 , catechol claim 1 , resorcinol claim 1 , hydroquinone claim 1 , and pyrogallol.5. The preparation method according to claim 1 , wherein 550 to 2000 parts by weight of the phenolic compound is mixed claim 1 , based on 100 parts by weight of lignin.6. The preparation method according to claim 1 , wherein the mixing of the lignin with the phenolic compound is performed at 70° C. or higher.7. The preparation method according to claim 1 , wherein the mixing of the lignin with the phenolic compound is performed ...

METHODS FOR PRODUCTION OF L-METHIONINE AND RELATED PRODUCTS

A method comprising: (a) enzymatically processing an O-acetylhomoserine (OAHS) fermentation liquor to produce L-methionine and an acetate source; (b) separating at least a portion of said L-methionine from at least a fraction of said acetate source to form separated L-methionine and a residual liquor comprising an acetate-source; and (c) recovering at least a portion of said acetate source from said residual liquor as recovered acetate. 171-. (canceled)72. A method for producing an L-methionine product comprising;(a) providing a fermentation liquor comprising an L-methionine precursor selected from the group consisting of O-acetylhomoserine (OAHS) and O-succinyl homoserine (OSHS), and at least one impurity;(b) enzymatically processing said precursor to produce a reaction liquor comprising L-methionine, an organic acid selected from the group consisting of acetic acid and succinic acid and at least one impurity;(c) modifying said reaction liquor to form a crystallizing feed;(d) crystallizing L-methionine from said crystallizing feed to form crystalline L-methionine and an L-methionine-depleted mother liquor; and(e) recovering at least a portion of said organic acid from said mother liquor as recovered organic acid; wherein said recovering comprises producing a residual liquor containing said free organic acid and separating said free organic acid,and said crystalline L-methionine is characterized by at least one characteristic selected from the group consisting of:(i) purity greater than 95%;(ii) containing less than 1% organic acid;(iii) L-methionine precursor content greater than 1 PPB;(iv) content of at least one particular impurity is greater than 10 PPM;(v) less than 2% of D-methionine; and{'sup': '−13', '(vi) carbon-14 to carbon-12 ratio of at least 2.0×10.'}73. The method according to claim 72 , wherein said modifying comprises combining said reaction liquor with an L-methionine-comprising recycle stream.74. The method according to claim 73 , further ...

PROCESS FOR PRODUCING POLYESTER FIBER

The present invention relates to polyester fiber that can be used as fabric for an airbag. In particular, the present invention relates to a process for producing polyester fiber comprising conducting an esterification reaction of a dicarboxylic acid composition and glycol in a predetermined ratio; conducting a polycondensation reaction of the oligomer produced by the esterification reaction; conducting a solid state polymerization of the polymer produced by the polycondensation; and melt spinning and drawing the polyester chip produced by the solid state polymerization, fiber for an airbag produced thereby, and fabric for an airbag comprising the same. 1. A process for producing polyester fiber comprising the steps of:conducting an esterification reaction of a dicarboxylic acid composition comprising at least two kinds of dicarboxylic acid compounds with glycol;conducting a polycondensation reaction of the oligomer produced by the esterification;conducting a solid state polymerization of the polymer produced by the polycondensation; andmelt spinning and drawing the polyester chip produced by the solid state polymerization,wherein the dicarboxylic acid composition comprises aromatic dicarboxylic acid having carbon number of 6 to 24 and aliphatic dicarboxylic acid having carbon number of 2 to 24, and the mole ratio of the aromatic dicarboxylic acid and the aliphatic dicarboxylic acid is 1:0.01 to 1:0.15; or the dicarboxylic acid composition comprises terephthalic acid and at least one isomer of terephthalic acid selected from the group consisting of isophthalic acid and phthalic acid, and the mole ratio of the terephthalic acid and the isomer is 1:0.01 to 1:0.12, and the mole ratio of the total amount of the dicarboxylic acid compounds and the glycol is 1:1 to 1:1.5.2. The process according to claim 1 , wherein the polycondensation is conducted at a temperature of 250 to 290° C.3. The process according to claim 1 , wherein the solid state polymerization is conducted ...

ULTRASOUND DIAGNOSIS APPARATUS AND METHOD OF OPERATING THE SAME

An ultrasound diagnosis apparatus includes: a high voltage power source; a transmission circuit to receive power from the high voltage power source, generate a pulse generating an ultrasound wave, and apply the ultrasound wave to a probe in the ultrasound diagnosis apparatus; a power circuit to receive the power from the high voltage power source and charge a capacitor with electric energy when the ultrasound diagnosis apparatus operates in a shear wave mode, and supply, to the transmission circuit, shear wave mode power used for generating a shear wave, based on the electric energy; and a processor to control the power circuit to supply the shear wave mode power when the shear wave mode is in operation, and control the high voltage power source and the power circuit such that insufficient power of the shear wave mode power is supplied from the high voltage power source to the transmission circuit. 1. An ultrasound diagnosis apparatus comprising:a high voltage power source;a transmission circuit configured to receive power from the high voltage power source, generate a pulse generating an ultrasound wave, and apply the ultrasound wave to a probe in the ultrasound diagnosis apparatus;a power circuit configured to receive the power from the high voltage power source and be charged with electric energy when the ultrasound diagnosis apparatus operates in a shear wave mode, and supply, to the transmission circuit, shear wave mode power used for generating a shear wave, based on the electric energy; anda processor configured to control the power circuit configured to supply the shear wave mode power when the shear wave mode is in operation, and control the high voltage power source and the power circuit such that insufficient power of the shear wave mode power is supplied from the high voltage power source to the transmission circuit.2. The apparatus of claim 1 , wherein when the electric energy stored in the power circuit is reduced when the shear wave mode power is ...

Scroll rotor mold, molding device, and method for manufacturing mold

A mold for forging a scroll rotor capable of controlling material flow speed by adjusting a land section, a molding device applying same, and a method for manufacturing the mold. In the mold, a die includes an extrusion unit having a molding space therein and a spiral-shaped extrusion passage provided in the lower portion thereof so as to correspond to a wrap portion disposed in the scroll rotor. A punch is connected to the die to be in close contact with the inner circumference of the molding space and to be able to slide up and down. The lower portion has a shape corresponding to the upper surface of the flange portion of the scroll rotor and a boss portion. The extrusion passage has a land section in direct contact with the extrusion material. The length of the land section varies along the spiral direction.

APPARATUS FOR PRODUCING A COMPOSITE MATERIAL

The present invention includes a first injection tube for supplying a colloidal medium, a storage part connected to the first injection tube for receiving the colloidal medium through the first injection tube, a second injection tube connected to the storage part for supplying a colloid, a discharge tube connected to both the storage part and the second injection tube for discharging the colloidal medium coming from the storage part and the colloid coming from the second injection tube, and a free surface inversion part for inverting the free surface of the liquid in the second injection tube so as to mix the colloidal medium and the colloid in the discharge tube. 1. An apparatus for producing a composite material , comprising:a first injection tube supplying a dispersion medium;a reservoir connected to the first injection tube and receiving the dispersion medium through the first injection tube;a second injection tube connected to the reservoir and supplying dispersion particles;a discharge tube connected to the reservoir and the second injection tube and discharging a mixture of the dispersion medium supplied from the reservoir and the dispersion particles supplied from the second injection tube; anda free surface inversion unit directing a free surface of a liquid in the second injection tube vertically downward such that the dispersion medium and the dispersion particles are mixed with each other inside the discharge tube.2. The apparatus according to claim 1 , wherein the reservoir is formed of a closed loop pipe claim 1 , and the discharge tube communicates with the reservoir and extends upward therefrom.3. The apparatus according to claim 1 , wherein the free surface inversion unit comprises:a coil generating an induced current inside the reservoir;an electromagnet disposed at a connection portion between the second injection tube and the discharge tube.4. The apparatus according to claim 3 , wherein the electromagnet controls Lorentz force by generating a ...

LYOCELL FIBER

This invention relates to a lyocell fiber and, more specifically, to a lyocell fiber exhibiting the same or improved physical properties even if used in a lesser amount, compared to a conventional lyocell fiber, by controlling the shape of the section of a monofilament included in the lyocell fiber to increase the specific surface area of the fiber. 1. A lyocell fiber comprising:a lyocell multifilament manufactured by spinning a lyocell spinning dope including a cellulose pulp and an N-methylmorpholine-N-oxide (NMMO) aqueous solution,wherein the multifilament includes a monofilament having a multi-lobal section, the multi-lobal section includes a plurality of projections, and the plurality of projections comes into contact with a first virtual circle and a second virtual circle, included in the first virtual circle, is integrally formed with the second virtual circle, serving as a core, and comes into contact with the first virtual circle at ends thereof.2. The lyocell fiber of claim 1 , wherein the lyocell spinning dope includes 6 to 16 wt % of the cellulose pulp and 84 to 94 wt % of the N-methylmorpholine-N-oxide aqueous solution.3. The lyocell fiber of claim 2 , wherein the cellulose pulp has an alpha-cellulose content of 85 to 97 wt % and a degree of polymerization (DPw) of 600 to 1700.4. The lyocell fiber of claim 1 , wherein a space occupancy ratio defined in a following Equation 1 is 150 to 400%:{'br': None, 'Space occupancy ratio (%)=(Area of first virtual circle/sectional area of monofilament included in lyocell fiber)×100.\u2003\u2003'}5. The lyocell fiber of claim 1 , wherein the first virtual circle has a radius of 8 to 30 μm.6. The lyocell fiber of claim 1 , wherein the second virtual circle has a radius of 3 to 12 μm.7. The lyocell fiber of claim 1 , wherein the first virtual circle and the second virtual circle are concentric. The present invention relates to a lyocell fiber.A fiber is a piece of natural or synthetic linear material that ...

POLISHING PAD AND METHOD FOR MANUFACTURING SAME

Polishing pad and method of manufacturing the same, the method, whereby materials for forming a polishing layer are mixed and solidified by a chemical reaction so as to manufacture the polishing pad, the method including: grinding organic materials by using a physical method so as to form micro-organic particles; mixing the micro-organic particles formed in the operation with the materials for forming the polishing layer; mixing at least one selected from the group consisting of inert gas, a capsule type foaming agent, and a chemical foaming agent that are capable of controlling sizes of pores, with the mixture in the operation so as to form gaseous pores; performing gelling and hardening of the mixture generated in the operation so as to form a polishing layer; and processing the polishing layer so as to distribute open pores defined by opening gaseous pores on a surface of the polishing layer. 1. A method of manufacturing a polishing pad , whereby materials for forming a polishing layer are mixed and solidified by a chemical reaction so as to manufacture the polishing pad , the method comprising:(a) grinding organic materials by using a physical method so as to form micro-organic particles;(b) mixing the micro-organic particles formed in (a) with the materials for forming the polishing layer;(c) mixing at least one selected from the group consisting of inert gas, a capsule type foaming agent, and a chemical foaming agent that are capable of controlling sizes of pores, with the mixture in (b) so as to form gaseous pores;(d) performing gelling and hardening of the mixture generated in (c) so as to form a polishing layer; and(e) processing the polishing layer so as to distribute open pores defined by opening gaseous pores on a surface of the polishing layer.2. A method of manufacturing a polishing pad , whereby materials for forming a polishing layer are mixed and solidified by a chemical reaction so as to manufacture the polishing pad , the method comprising:(a) ...

PREPARATION OF PROCESS OF L-METHIONINE

The present invention relates to a method for producing L-methionine using a bio-synthesis process and a specific enzymatic process. More particularly, the present invention relates to a method for producing L-methionine with high yield by enzyme conversion reaction from L-methionine precursor in the presence of methyl mercaptan (CHSH). The process of the present invention enables selective production of L-methionine which may be used in various fields of industry, such as feed- and food-additives, as raw material for medical supplies, pharmaceutical drugs, and the like. 1. Process for the enzymatic conversion of an L-methionine precursor with methyl mercaptan to obtain L-methionine , wherein the methyl mercaptan partial pressure in the reaction vessel over the reaction medium ranges from 10 kPA to 180 kPA , preferably from 51 kPa to 180 kPa , more preferably from 51 kPa to 160 kPa , still more preferably from about 80 kPa to about 160 kPa , advantageously from about 90 kPa to about 150 kPa , for example the CHSH partial pressure is about 100 kPa to 150 kPa , at the reaction temperature.2. Process according to claim 1 , wherein the reaction temperature ranges from 20° C. to 45° C. claim 1 , preferably from 25° C. to 40° C. claim 1 , still more preferably from 30° C. to 40° C.3. Process according to claim 1 , wherein the L-methionine precursor is chosen from among O-succinyl homoserine (OSHS) and O-acetyl homoserine (OAHS) claim 1 , and preferably is OAHS.4. Process according to claim 1 , wherein the enzyme used for the enzymatic conversion is prepared using expression of genes according to biotechnological processes.5PseudomonasChromobacteriumLeptospiraHyphomonas. Process according to claim 1 , wherein the enzyme used for the enzymatic conversion is chosen from cystathionine-γ-synthase or O-acetyl homoserine sulfhydrylase or O-succinyl homoserine sulfhydrylase derived from sp. claim 1 , sp. claim 1 , sp. or sp.6. Process according to claim 1 , wherein the pH of the ...

APPARATUS AND METHOD FOR AVOIDING CROSS-READING OF RFID USING VISIBLE LIGHT RECOGNITION

A radio frequency identification (RFID) technology which overcomes a cross-reading problem by using visible light recognition and identification values. An RFID reader terminal includes a visible light transmitter configured to transmit a visible light signal including an identification value of the RFID reader terminal, a radio frequency (RF) receiver configured to receive an RF signal including an identification value of an RFID tag terminal and information of the RFID tag terminal from the RFID tag terminal, and a reader controller configured to determine whether the identification value of the RFID reader terminal is identical to the identification value of the RFID tag terminal. In addition, there is provided an RFID tag terminal corresponding to the RFID reader terminal. 1. A radio frequency identification (RFID) reader terminal comprising:a visible light transmitter configured to transmit a visible light signal including an identification value of the RFID reader terminal;a radio frequency (RF) receiver configured to receive an RF signal including an identification value of an RFID tag terminal and information of the RFID tag terminal from the RFID tag terminal; anda reader controller configured to determine whether the identification value of the RFID reader terminal is identical to the identification value of the RFID tag terminal.2. The RFID reader terminal of claim 1 , further comprising a power transmitter configured to transmit power to the RFID tag terminal using a continuous wave (CW).3. The RFID reader terminal of claim 1 , wherein the reader controller recognizes the information of the RFID tag terminal when the identification value of the RFID reader terminal is identical to the identification value of the RFID tag terminal.4. The RFID reader terminal of claim 1 , wherein pulse interval encoding (PIE) has been performed on the visible light signal.5. The RFID reader terminal of claim 1 , wherein the RF signal includes the identification value of ...

Modified cross-section lyocell material for tobacco filter, and preparation method therefor

This invention relates to a lyocell material for a tobacco filter and a method of manufacturing the same, and more particularly to a lyocell fiber having a modified cross-section for a tobacco filter, wherein the cross-sectional shape of a monofilament contained in a lyocell fiber is controlled to increase the external surface area of the fiber, after which then crimps are formed, thereby exhibiting properties equal or superior to those of conventional lyocell materials, even when used in a small amount.

FABRIC FOR AIRBAG AND METHOD OF MANUFACTURING THE SAME

The present invention relates to a fabric for an airbag, and an airbag for a vehicle including the same, and particularly, to a fabric for an airbag, a method of manufacturing the same, and an airbag for a vehicle including the same, wherein the fabric is made of one or more fibers selected from the group consisting of nylon fiber, polyester fiber, polyolefin fiber, and aramid fiber, having a cover factor of 1500 to 2500, and having an exponent of dynamic air permeability (EXP) of 0.9 to 1.6 as measured by a method according to the American Society for Testing and Materials ASTM D 6476 method. 1. A fabric for an airbag , made of one or more fibers selected from the group consisting of nylon fiber , polyester fiber , polyolefin fiber , and aramid fiber ,having a cover factor of 1500 to 2500 as defined in the following Calculation Formula 1, and {'br': None, 'Cover factor(CF)=warp density (thread/inch)×√{square root over ((warp denier))}+weft density (thread/inch)×√{square root over ((weft denier))}. \u2003\u2003[Calculation Formula 1]'}, 'having an exponent of dynamic air permeability (EXP) of 0.9 to 1.6 as measured by the American Society for Testing and Materials ASTM D 6476 method2. The fabric for an airbag according to claim 1 ,wherein it has a crimp ratio of 3.0% to 12.0% as measured by a method of the German Institute for Standardization DIN 53852, and anaverage dynamic air permeability (ADAP) of 100 to 1200 mm/s as measured by the American Society for Testing and Materials ASTM D 6476 method.3. The fabric for an airbag according to claim 1 , wherein the fiber has a fineness of 200 to 1300 denier.4. The fabric for an airbag according to claim 1 , wherein it has a warp density and a weft density of 20 to 70 th/inch claim 1 , respectively.5. The fabric for an airbag according to claim 1 , wherein it has stiffness of 1.5 kgf or less as measured by the American Society for Testing and Materials ASTM D 4032 method.6. The fabric for an airbag according to claim 1 , ...

MICROORGANISM PRODUCING L-LYSINE AND METHOD FOR PRODUCING L-LYSINE USING THE SAME

The present disclosure relates to a microorganism producing L-lysine and a method for producing L-lysine by using the same. More specifically, the present disclosure relates to a microorganism of the genus , which is modified such that the activity of a protein involved in cell wall hydrolysis is inactivated in comparison with the endogenous activity thereof; and a method for producing L-lysine using the same. 1Corynebacterium. A microorganism of the genus producing L-lysine , which is modified such that an activity of a protein involved in cell wall hydrolysis is inactivated in comparison with an endogenous activity thereof.2. The microorganism according to claim 1 , wherein the protein involved in cell wall hydrolysis is at least one protein selected from the group consisting of proteins comprising amino acid sequences of SEQ ID NOS: 1 to 4.3CorynebacteriumCorynebacterium glutamicum.. The microorganism according to claim 1 , wherein the microorganism of the genus is4. A method for preparing L-lysine claim 1 , comprising:{'i': 'Corynebacterium', 'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, '(i) culturing the microorganism of the genus of in a medium; and'}(ii) recovering L-lysine from the culture medium or the microorganism.5. A method for preparing L-lysine claim 1 , comprising:{'i': 'Corynebacterium', 'claim-ref': {'@idref': 'CLM-00002', 'claim 2'}, '(i) culturing the microorganism of the genus of in a medium; and'}(ii) recovering L-lysine from the culture medium or the microorganism.6. A method for preparing L-lysine claim 1 , comprising:{'i': 'Corynebacterium', 'claim-ref': {'@idref': 'CLM-00003', 'claim 3'}, '(i) culturing the microorganism of the genus of in a medium; and'}(ii) recovering L-lysine from the culture medium or the microorganism. The present disclosure relates to a microorganism producing L-lysine and a method for producing L-lysine using the same.L-Amino acids, in particular L-lysine, which are used in animal feeds, therapeutic agents for ...

PROBE ASSEMBLY, ULTRASOUND IMAGING APPARATUS AND CONTROLLING METHOD OF ULTRASOUND IMAGING APPARATUS

Disclosed herein is a probe assembly, an ultrasound imaging apparatus and a controlling method the ultrasound imaging apparatus. 1. An ultrasound imaging apparatus comprising:a placing unit in which at least one probe connector is placed;an identification information receiver receiving probe assembly identification information from the placed probe connector;an input device receiving a selection command of at least one probe connector; anda locking unit locking the at least one probe connector into the ultrasound imaging apparatus based on the selection command.2. The ultrasound imaging apparatus of whereinthe identification information receiver comprises a second contact point receiving the probe assembly identification information by making contact with a first contact point placed in the probe connector.3. The ultrasound imaging apparatus of whereinthe second contact point makes contact with the first contact point by manual operation of a user.4. The ultrasound imaging apparatus of whereinthe locking unit locks the probe connector into the ultrasound imaging apparatus so that the first contact point makes contact with the second contact point.5. The ultrasound imaging apparatus of whereinthe identification information receiver comprises a second wireless communication module receiving the probe assembly identification information by being connected to a first wireless communication module of the probe connector.6. The ultrasound imaging apparatus of whereinthe locking unit locks the probe connector into the ultrasound imaging apparatus so that the first wireless communication module is connected to the second wireless communication module.7. The ultrasound imaging apparatus of further comprising:a display device displaying the probe assembly identification information.8. The ultrasound imaging apparatus of whereinthe locking unit performs a first locking connecting the identification information transmitter of the probe connector to the identification ...

An airbag and a preparation method thereof

The present invention relates to an airbag including an inflating part having gas inflatability, a non-inflating part supporting the inflating part, a combined part constituting a boundary between the inflating part and the non-inflating part, and an ultrasonic fusion bonded part located between the combined part and the end part of an inflator from which a gas at a high pressure spurts when a car crashes, and a preparation method thereof.

ARAMID FABRIC AND AIRBAG FOR VEHICLE INCLUDING SAME

This invention relates to an aramid fabric and an airbag for a vehicle including the same, and more specifically, to an aramid fabric and an airbag for a vehicle including the same, wherein the aramid fabric can endure high levels of impact force and can exhibit superior air sealing performance, dimensional stability and packing property, and can thus be adapted for use in an external airbag for a vehicle. The aramid fabric includes an aramid fabric layer including an aramid yarn having a fineness of 300 to 1000 denier; and a rubber coating layer formed on the aramid fabric layer, wherein the strength-elongation index (TI) in a warp direction of the fabric as defined by a predetermined equation is 2.8 to 4.8, and the coating amount of the rubber coating layer is 20 to 100 g/m. 1. An aramid fabric , including:an aramid fabric layer comprising an aramid yarn having a fineness of 300 to 1000 denier; anda rubber coating layer formed on the aramid fabric layer,{'sup': 'wa', 'wherein a strength-elongation index (T) in a warp direction of the fabric is 2.8 to 4.8, as defined by Equation 1 below, and'}{'sup': '2', 'claim-text': {'br': None, 'i': TI', '=T', 'S', '×D, 'sup': wa', 'wa', 'wa, '/()\u2003\u2003Equation 1'}, 'a coating amount of the rubber coating layer is 20 to 100 g/m{'sup': wa', 'wa, 'wherein Tis tensile strength (N/5 cm) in a warp direction of the aramid fabric as measured by International Organization for Standardization ISO 13934-1 method, Sis tensile elongation (%) in a warp direction of the aramid fabric as measured by International Organization for Standardization ISO 13934-1 method, and D is fineness (denier) of the aramid yarn.'}2. The aramid fabric according to claim 1 , wherein a strength-elongation index (TI) in a weft direction of the fabric is 3.4 to 5.4 claim 1 , as defined by Equation 2 below:{'br': None, 'i': TI', '=T', 'S', '×D, 'sup': we', 'we', 'we, '/()\u2003\u2003Equation 2'}{'sup': we', 'we, 'wherein Tis tensile strength (N/5 cm) in a weft ...

LYOCELL MATERIAL FOR CIGARETTE FILTER AND METHOD FOR PREPARING SAME

Disclosed are a lyocell material for a cigarette filter and a method of preparing the same, wherein a crimped tow is manufactured using a lyocell multifilament including low-strength lyocell monofilaments, and thus the ultimately prepared lyocell material for a cigarette filter can exhibit low strength, thereby increasing processing efficiency during the manufacture of the cigarette filter. 1. A method of preparing a lyocell material for a cigarette filter , comprising:(S1) spinning a lyocell spinning dope including cellulose pulp and an N-methylmorpholine-N-oxide (NMMO) aqueous solution, in which a concentration of the cellulose pulp is 8 to 11%;(S2) coagulating the lyocell spinning dope spun in (S1), thus obtaining a coagulated lyocell multifilament;(S3) water-washing the lyocell multifilament coagulated in (S2);(S4) oil-treating and drying the lyocell multifilament water-washed in (S3); and(S5) crimping the lyocell multifilament oil-treated in (S4), thus preparing a crimped tow,wherein (S1) to (S5) are performed so that the crimped tow has a tensile strength of 1 to 2 g/d.2. A method of preparing a lyocell material for a cigarette filter , comprising:(S1) spinning a lyocell spinning dope including cellulose pulp and an N-methylmorpholine-N-oxide (NMMO) aqueous solution, in which a concentration of the cellulose pulp is 8 to 11%;(S2) coagulating the lyocell spinning dope spun in (S1), thus obtaining a coagulated lyocell multifilament;(S3) water-washing the lyocell multifilament coagulated in (S2);(S4) oil-treating and drying the lyocell multifilament water-washed in (S3); and(S5) crimping the lyocell multifilament oil-treated in (S4), thus preparing a crimped tow,wherein (S1) to (S4) are performed so that monofilaments for the lyocell multifilament obtained in (S4) have a strength of 2.0 to 3.5 g/d.3. The method of claim 1 , wherein in (S1) claim 1 , the cellulose pulp comprises 85 to 97 wt % of alpha-cellulose and has a degree of polymerization (DPw) of 600 to ...

COATED FABRIC FOR AIRBAG

The present invention relates to a coated fabric for an airbag. Particularly, the present invention provides a coated fabric for an airbag on a surface of which a coating layer including liquid silicone rubber having elongation of 1000% or more, as measured according to Korean Industrial Standards (KS) M 6518, is included, and a method of manufacturing the same. According to the present invention, the elongation of liquid silicone rubber is excellent so that damage to the fabric for an airbag is minimized under a severe condition of high temperature and high pressure is minimized, and thus the airbag may have excellent inflation and deployment performance, and simultaneously provides excellent storage, dimensional stability, and airtightness effect, thereby safely protect passengers even upon vehicle collision and rollover. 1. A coated fabric for an airbag , comprising a coating layer including liquid silicone rubber having elongation of 1000% or more , as measured according to Korean Industrial Standards (KS) M 6518 , formed on a surface of the fabric.2. The coated fabric according to claim 1 , including one or more fibers selected from the group consisting of nylon-based claim 1 , polyester-based claim 1 , polyolefin-based claim 1 , and aramid-based fibers.3. The coated fabric according to claim 1 , wherein the liquid silicone rubber has viscosity of 150 claim 1 ,000 to 290 claim 1 ,000 cP claim 1 , as measured according to American Society for Testing and Materials (ASTM) D 427.4. The coated fabric according to claim 1 , wherein a coated amount of the liquid silicone rubber per unit area of the fabric is 15 to 150 g/m.5. The coated fabric according to claim 1 , having tear strength of 350 N or more claim 1 , as measured according to International Organization for Standardization (ISO) 13934-2.6. The coated fabric according to claim 1 , having a scrub resistance number of 2000 strokes or more claim 1 , measured according to International Organization for ...

FOLDING MACHINE FOR SIDE CURTAIN AIRBAG AND PROCESS FOR FOLDING SIDE CURTAIN AIRBAG USING THE SAME

A machine for folding a side curtain airbag which has a simpler machine configuration and is more efficient than a fully automatic machine and that can fold a large-capacity side curtain airbag cushion of approximately 4.0 m in length to sufficiently secure quality stability, and a process for folding a side curtain airbag by using the same, are provided. 1. A machine for folding a side curtain airbag , comprising a fixed rotatable roll folding bar with left and right manual handles.2. A machine for folding a side curtain airbag , comprising:a fixed rotatable roll folding bar with left and right manual handles;a mechanical tension module applying a load to one end of an airbag cushion; andan upper support fixture fixing the position of the airbag cushion in roll folding.3. The machine of claim 1 , wherein the thickness of the roll folding bar is 1.0 to 3.0 mm.4. The machine of claim 2 , wherein a load of 1 kg to 5 kg is applied to the airbag cushion.5. The machine of claim 2 , wherein the mechanical tension module applies a load to the top of the airbag cushion.6. The machine of claim 2 , wherein the upper support fixture includes air-cylinder or manual clamp modules disposed on the top of the roll folding bar with the same length as a whole cushion length claim 2 , or is disposed at three or more locations.7. The machine of claim 1 , further comprising a tension unit capable of controlling horizontal edge tension of the airbag cushion.8. The machine claim 1 , further comprising an air-cylinder or manual clamp module for supporting one end of the airbag cushion.9. The machine of claim 1 , further comprising an L-shaped folding plate fixing one end of the airbag cushion.10. The machine of claim 9 , further comprising a guide rail moving the L-shaped folding plate to the bottom.11. The machine of claim 1 , further comprising a handle support fixture supporting a rotating body of the fixed rotatable roll folding bar to not touch the bottom.12. The machine of claim 1 , ...

ULTRASOUND IMAGING APPARATUS AND METHOD OF CONTROLLING THE SAME

Disclosed herein is an ultrasound imaging apparatus including a beamformer to transmit or receive an ultrasound signal; a first probe connection unit in which a first probe connector is placed; and a second probe connection unit in which a second probe connector is placed. The second probe connection unit is connected to the beamformer via the first probe connection unit, and the first probe connection unit includes a disconnecting unit to disconnect the first probe connection unit and the second probe connection unit from each other. 1. An ultrasound imaging apparatus comprising:a beamformer to transmit or receive an ultrasound signal;a first probe connection unit in which a first probe connector is placed; anda second probe connection unit in which a second probe connector is placed,wherein the second probe connection unit is connected to the beamformer via the first probe connection unit, andthe first probe connection unit comprises a disconnecting unit to disconnect the first probe connection unit and the second probe connection unit from each other.2. The ultrasound imaging apparatus according to claim 1 , further comprising a controller to control the first and second probe connection units claim 1 , andwherein the first probe connection unit comprises a locking unit to lock the first probe connector into the first probe connection unit and the second probe connection unit comprises a locking unit to lock the second probe connector into the second probe connection unit, based on a control signal generated by the controller.3. The ultrasound imaging apparatus according to claim 2 , wherein claim 2 , when the first probe connector is locked into the first probe connection unit claim 2 , the disconnecting unit disconnects the first probe connection unit and the second probe connection unit from each other.4. The ultrasound imaging apparatus according to claim 1 , wherein the first and second probe connectors are locked into the first and second probe connection ...

LYOCELL MATERIAL FOR CIGARETTE FILTER AND METHOD FOR PREPARING SAME

Disclosed are a lyocell material for a cigarette filter and a method of preparing the same, wherein a crimped tow is manufactured using a lyocell multifilament including low-strength lyocell monofilaments, and thus the ultimately prepared lyocell material for a cigarette filter can exhibit low strength, thereby increasing processing efficiency during the manufacture of the cigarette filter. 1. A lyocell material for a cigarette filter , which is a crimped tow having a tensile strength of 1 to 2 g/d , obtained by crimping a lyocell multifilament.2. A lyocell material for a cigarette filter , which is a crimped tow obtained by crimping a lyocell multifilament comprising lyocell monofilaments having a strength of 2.0 to 3.5 g/d.3. The lyocell material of claim 1 , wherein the crimped tow has 15 to 30 crimps per inch.4. The lyocell material of claim 2 , wherein the lyocell monofilaments have a fineness of 1.0 to 8.0 denier.5. The lyocell material of claim 2 , wherein the lyocell monofilaments have an elongation of 5 to 13%.6. The lyocell material of claim 1 , wherein the crimped tow has a tensile strength of 1 to 2 g/d and an elongation at break of 5 to 7.5%.7. The lyocell material of claim 2 , wherein the crimped tow has 15 to 30 crimps per inch.8. The lyocell material of claim 7 , wherein the lyocell monofilaments have a fineness of 1.0 to 8.0 denier.9. The lyocell material of claim 7 , wherein the lyocell monofilaments have an elongation of 5 to 13%.10. The lyocell material of claim 2 , wherein the crimped tow has a tensile strength of 1 to 2 g/d and an elongation at break of 5 to 7.5%. This application is a Divisional Application of application Ser. No. 15/024,936 filed Mar. 25, 2016 (allowed), which is a National Stage of International Application No. PCT/KR2014/009006 filed Sep. 26, 2014, claiming priority based on Korean Patent Application Nos. 10-2013-0114536 filed Sep. 26, 2013, 10-2013-0163793 filed Dec. 26, 2013, and 10-2014-0128163 filed Sep. 25, 2014, the ...

ESD PROTECTION CIRCUIT FOR I/O BUFFER

An ESD protection circuit for an input/output buffer in which when an ESD pulse or event occurs, an ESD surge on a pad is discharged to a diode and a transistor channel, thereby enhancing the efficiency of the ESD protection circuit. The ESD protection circuit includes a floating N-well bias circuit connected to a pad at an output of driver circuit and outputting a bias voltage based on or in response to a supply voltage; a switch circuit connected to a logic circuit and the driver circuit, and configured to connect and disconnect the logic circuit and the driver circuit based on or in response to the supply voltage; and a pull-down circuit connected to the driver circuit, configured to output a voltage to the driver circuit based on or in response to the supply voltage. 1. An ESD protection circuit for an input/output buffer including a logic circuit and a driver circuit , the ESD protection circuit comprising:a floating N-well bias circuit connected to a pad at an output of the driver circuit, the floating N-well bias circuit having an output voltage based on or in response to a supply voltage;a switch circuit connected to the logic circuit and the driver circuit, the switch circuit configured to switch a connection between the logic circuit and the driver circuit based on or in response to the supply voltage; anda pull-down circuit connected to the driver circuit, the pull-down circuit outputting a voltage to the driver circuit based on or in response to the supply voltage.2. The ESD protection circuit of claim 1 , wherein the output voltage of the floating N-well bias circuit is a floating N-well bias voltage claim 1 , andthe floating N-well bias circuit is configured to output the supply voltage as the floating N-well bias voltage during normal operation.3. The ESD protection circuit of claim 1 , wherein the output voltage of the floating N-well bias circuit is a floating N-well bias voltage claim 1 , andthe floating N-well bias circuit is configured to output ...

ULTRASONIC DIAGNOSTIC APPARATUS

An ultrasonic diagnostic apparatus includes: a control panel configured to receive a user input for operating the ultrasonic diagnostic apparatus, and to move a position with respect to the ultrasonic diagnostic apparatus; a footrest moving device provided below the ultrasonic diagnostic apparatus, configured to move at least one of the footrest provided to mount a user's foot and the ultrasonic diagnostic apparatus with respect to the ground; and a controller configured to control the control panel and the footrest moving device to interlock with each other. 1. An ultrasonic diagnostic apparatus comprising:a control panel configured to receive a user input for operating the ultrasonic diagnostic apparatus, and to move a position with respect to the ultrasonic diagnostic apparatus;a footrest moving device provided below the ultrasonic diagnostic apparatus, configured to move at least one of the footrest provided to mount a user's foot and the ultrasonic diagnostic apparatus with respect to the ground; anda controller configured to control the control panel and the footrest moving device to interlock with each other.2. The ultrasonic diagnostic apparatus according to claim 1 , wherein the controller is configured to interlock so that the footrest moves downward when the control panel moves upward claim 1 , and to interlock so that the footrest moves upward when the control panel moves downward.3. The ultrasonic diagnostic apparatus according to claim 1 , wherein the controller is configured to interlock so that the footrest moves upward when the control panel moves upward claim 1 , and to interlock so that the footrest moves upward when the control panel moves downward.4. The ultrasonic diagnostic apparatus according to claim 1 , wherein the controller is configured to interlock so that the footrest moves backward when the control panel moves forward claim 1 , and to interlock so that the footrest moves forward when the control panel moves backward.5. The ultrasonic ...

RIGID POLYURETHANE FOAM AND PREPARATION METHOD THEREOF

A rigid polyurethane foam which is a polymerization product of a composition including a concentrated acid hydrolytic lignin, a polyol, and an isocyanate, and a method of preparing the rigid polyurethane foam. 1. A rigid polyurethane foam which is a polymerization product of a composition comprising a concentrated acid hydrolytic lignin , a polyol , and an isocyanate.2. The rigid polyurethane foam of claim 1 , wherein concentrated acid hydrolytic lignin is a lignin separated from a hydrolysate obtained by hydrolysis of lignocellulosic biomass with a concentrated acid.3. The rigid polyurethane foam of claim 2 , wherein the concentrated acid is selected from the group consisting of hydrochloric acid claim 2 , sulfuric acid claim 2 , nitric acid claim 2 , and a Lewis acid.4. The rigid polyurethane foam of claim 1 , wherein an amount of the concentrated acid hydrolytic lignin is 1 wt % to 40 wt % based on a total weight of a mixture of the polyol and the concentrated acid hydrolytic lignin.5. The rigid polyurethane foam of claim 1 , wherein an amount of the concentrated acid hydrolytic lignin is 10 wt % to 30 wt % based on a total weight of a mixture of the polyol and the concentrated acid hydrolytic lignin.6. The rigid polyurethane foam of claim 1 , wherein a hydroxyl value of the concentrated acid hydrolytic lignin is within a hydroxyl value range of the polyol for rigid polyurethane foam.7. The rigid polyurethane foam of claim 1 , wherein a hydroxyl value of the concentrated acid hydrolytic lignin is from 300 mg KOH/g to 500 mg KOH/g.8. An article comprising the rigid polyurethane foam according to .9. A method of preparing a rigid polyurethane foam claim 1 , the method comprising reacting concentrated acid hydrolytic lignin claim 1 , a polyol claim 1 , and an isocyanate in the presence of a foam stabilizing agent claim 1 , a catalyst claim 1 , and a foaming agent.10. The method of claim 9 , wherein the reacting of the concentrated acid hydrolytic lignin claim 9 , ...

Corynebacterium SP. Microorganisms having L-Lysine-Producing Ability and L-Lysine Producing Method Using Same

The present invention relates to an L-lysine-producing microorganism of the genus and a method for producing L-lysine using the same. 1Corynebacterium. An L-lysine-producing microorganism of the genus wherein a protein comprising an amino acid sequence of SEQ ID NO: 1 is inactivated.2. The L-lysine-producing microorganism according to claim 1 , wherein the protein is encoded by a gene having a nucleotide sequence of SEQ ID NO: 2.3CorynebacteriumCorynebacterium glutamicum.. The L-lysine-producing microorganism of claim 1 , wherein the microorganism of the genus is4. A method for producing L-lysine claim 1 , comprising the steps of:{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'culturing the microorganism of in a medium; and'}recovering L-lysine from the microorganism or the culture medium.5. A method for producing L-lysine claim 1 , comprising the steps of:{'claim-ref': {'@idref': 'CLM-00002', 'claim 2'}, 'culturing the microorganism of in a medium; and'}recovering L-lysine from the microorganism or the culture medium.6. A method for producing L-lysine claim 1 , comprising the steps of:{'claim-ref': {'@idref': 'CLM-00003', 'claim 3'}, 'culturing the microorganism of in a medium; and'}recovering L-lysine from the microorganism or the culture medium. The present invention relates to an L-lysine-producing microorganism of the genus and a method for producing L-lysine using the same.L-lysine, a kind of essential amino acid, is used in the animal feed, human drug and cosmetic industries and is produced by fermentation using a microorganism of the genus or the genusA strain of the genus , particularly , is a gram-positive microorganism which is extensively used to produce L-amino acid. For production of L-lysine, target-specific approaches have been mainly used, such as enhancement of the expression of genes encoding enzymes involved in L-lysine biosynthesis in a strain of genus , or removal of genes unnecessary for L-lysine biosynthesis. In addition to these methods, ...

POLISHING PAD AND METHOD OF MANUFACTURING THE SAME

Polishing pad and method of manufacturing the same, the method including: (a) mixing materials for forming a polishing layer; (b) mixing at least two from among inert gas, a capsule type foaming agent, a chemical foaming agent, and liquid microelements that are capable of controlling sizes of pores, with the mixture in (a) so as to form two or more types of pores; (c) performing gelling and hardening of the mixture generated in (b) so as to form a polishing layer including the two or more types of pores; and (d) processing the polishing layer so as to distribute micropores defined by opening the two or more types of pores on a surface of the polishing layer. 1. A polishing pad that performs a polishing process by moving in contact with a surface of an object to be polished , the polishing pad comprising a polishing layer ,wherein the polishing layer comprises two or more types of pores, of which sizes are controlled by using at least two from among inert gas, a capsule type foaming agent, a chemical agent, and liquid microelements.2. The polishing pad of claim 1 , wherein the inert gas is selected from the group consisting of 8 group elements of a periodic table and gas that does not react with the materials for forming the polishing layer.3. The polishing pad of claim 1 , wherein a liquid material that constitutes the liquid microelements comprises at least one selected from the group consisting of aliphatic mineral oil claim 1 , aromatic mineral oil claim 1 , a silicon oil which does not have a hydroxyl group at the end of molecules claim 1 , soybean oil claim 1 , coconut oil claim 1 , palm oil claim 1 , cotton seed oil claim 1 , camellia oil claim 1 , hardened oil claim 1 , or a combination thereof.4. The polishing pad of claim 1 , wherein the polishing layer comprises a plurality of first pores formed by the liquid microelements and a plurality of second pores having a relatively large size and formed by using at least one from among injecting the inert gas ...

EXTRUSION DIE USING SHOCK-ABSORBING PAD AND METHOD FOR MANUFACTURING EXTRUSION

An extrusion die using a shock-absorbing pad and a method for manufacturing an extrusion. A shock-absorbing pad is inserted between a material to be processed and a die such that the shock-absorbing pad is deformed during extrusion to form an optimal die half angle, thereby efficiently extruding the material to be processed. The extrusion die for extruding the material to be processed includes a container for accommodating a material to be processed, a die which is mounted on the front of the container, and which has, in the center thereof, a die hole that is a path through which the material to be processed is extruded, a shock-absorbing pad inserted between the material to be processed and the die, and a ram for pressing the material to be processed. 1. An extrusion mold for extruding a material to be machined , comprising:a container accommodating a material to be machined;a die disposed on a front portion of the container, the die having a die hole as a passage through which the material to be machined is extruded;a buffer pad disposed between the material to be machined and the die; anda ram pressing the material to be machined.2. The extrusion mold according to claim 1 , whereinthe material to be machined comprises a core and a covering material cladding the core, andthe buffer pad is formed of a material having a yield strength lower than a yield strength of a material of which the core or the covering material is formed.3. A molding device for fabricating an extruded product by extruding a material to be machined claim 1 , the molding device comprising the extrusion mold as claimed in .4. A method of fabricating a product by extruding a material to be machined claim 1 , the method comprising:disposing a buffer pad between a material to be machined and a die;extruding the material to be machined through a die hole by applying a pressure to the material to be machined; andwithdrawing a product extruded through the die hole.5. The method according to claim 4 , ...

POLYESTER SEWING THREAD FOR AIRBAG AND PREPARATION METHOD THEREOF

Disclosed is a polyester sewing thread usable for a fabric for an airbag and a cushion for an airbag. A polyester sewing thread is obtained by doubling and twisting a specific polyester yarn including a plurality of polyester filaments, and bonding the polyester yarn in the manner of in-bonding, out-bonding, or in-and-out bonding. The polyester fiber has high strength, middle elongation, and dry heat shrinkage, and may be used as sewing threads with excellent physical properties similar to those of a sewing thread of existing polyamide fiber (Nylon 66). A method for producing the thread is also disclosed. 1. A polyester sewing thread for an airbag obtained by doubling and twisting a polyester yarn including a plurality of polyester filaments and having tensile strength of 7.8 g/d or more , elongation at break of 13% to 27% , dry heat shrinkage of 7% or less , boiling water shrinkage of 5% or less , and melted heat capacity of 35 J/g or more , and bonding the polyester yarn in the manner of in-bonding , out-bonding , or in-and-out bonding.2. The polyester sewing thread for an airbag of claim 1 , wherein the polyester sewing thread has total fineness of 200 to 2 claim 1 ,400 denier.3. The polyester sewing thread for an airbag of claim 1 , wherein the polyester yarn has a denier per filament of 2.0 to 8.0 DPF claim 1 , and includes the filaments of 20 to 180 strands.4. The polyester sewing thread for an airbag of claim 1 , wherein the polyester yarn has a number average molecular weight of 100 claim 1 ,000 to 250 claim 1 ,000.5. The polyester sewing thread for an airbag of claim 1 , wherein the polyester yarn has an intrinsic viscosity of 0.8 dl/g or more.6. The polyester sewing thread for an airbag of claim 1 , wherein the polyester yarn has crystallinity of 40% to 60%.7. The polyester sewing thread for an airbag of claim 1 , wherein the polyester yarn has an initial modulus of 40 to 120 g/d.8. The polyester sewing thread for an airbag of claim 1 , wherein a toughness ...

METHOD FOR MANUFACTURING POLYESTER FABRIC FOR AIRBAG

Disclosed is a method for manufacturing a polyester fabric for an airbag that can not only prevent or minimize the separation of a sizing agent, which is provided to a yarn through a sizing process, during a weaving process, but can also maximize a peel strength between a textile substrate and a coating layer to be subsequently formed thereon and lower the stiffness of an airbag fabric by effectively removing the sizing agent from the textile substrate after the weaving process is completed. The method of the present invention comprises: applying a polyester-based sizing agent to a polyester yarn; manufacturing a textile substrate with the sizing agent-applied polyester yarn; removing the sizing agent from the textile substrate under an alkaline condition of pH 8 to 10; and forming a coating layer on the sizing agent-removed textile substrate in order to enhance air-tightness. 1. A method for manufacturing a polyester fabric for an airbag , the method comprising:applying a polyester-based sizing agent to a polyester yarn;manufacturing a textile substrate with the sizing agent-applied polyester yarn;removing the sizing agent from the textile substrate under an alkaline condition of pH 8 to 10; andforming a coating layer on the sizing agent-removed textile substrate in order to enhance air-tightness.2. The method of claim 1 , wherein the removing the sizing agent comprises having the textile substrate pass through a scouring solution of pH 8 to 10.3. The method of claim 1 , wherein the scouring solution comprises:water; andan alkaline compound, a permeating agent, an insolubilizing agent, and a desizing agent, all of which are dissolved in the water.4. The method of claim 3 , wherein 100 parts by weight of the alkaline compound claim 3 , 160 to 190 parts by weight of the permeating agent claim 3 , 190 to 220 parts by weight of the insolubilizing agent claim 3 , and 450 to 550 parts by weight of the desizing agent are dissolved in the water.5. The method of claim 2 , ...

MASK APPARATUS FOR SKIN BEAUTY AND MASK APPARATUS FOR SKIN BEAUTY WITH COMPLEX LAYER INCLUDING GOLD AND SILVER

Disclosed herein is a mask apparatus for skin beauty capable of improving skin health. The mask apparatus according to the present invention comprises a face mask, a mask pad placed on the mask pad and providing skin beauty effect on a face of a user using heat and far-infrared rays, and a control unit providing currents to the mask pad and emitting heat and far-infrared rays toward the face of the user. 1. A mask apparatus for skin beauty comprising:a face mask;a mask pad placed within the face mask and providing skin beauty effect on a face of a user using heat and far-infrared rays; anda control unit for capable of differently providing a current to a specific part of the mask pad and differently emitting the heat and far-infrared rays onto the face of the user.2. The mask apparatus of claim 1 , further comprising a remote control connected to the mask pad and spaced apart from the mask pad claim 1 , wherein the control unit is formed in the remote control and currents are provided through the remote control to the mask pad.3. The mask apparatus of claim 2 , further comprising a power supply formed in the remote control.4. The mask apparatus of claim 1 , further comprising a battery formed in the face mask claim 1 , wherein the control unit is formed in the face mask and differently provides currents from the battery to the specific part of the mask pad to differently emit the heat and far-infrared rays onto the face of the user.5. The mask apparatus of claim 1 , further comprising a fabric facial mask including gold and silver claim 1 ,wherein the fabric facial mask removes skin wastes and improves a blood circulation through the heat and far-infrared rays from the mask pad by gold and directly performs a sterilizing function by silver on a facial skin.6. The mask apparatus of claim 1 , wherein the mask pad comprises:a far-infrared ray generating pad for generating the heat and far-infrared rays; anda far-infrared ray reflecting pad for reflecting the heat and ...

LYOCELL FIBER, NONWOVEN FIBROUS AGGREGATE CONTAINING THE SAME, AND A MASK PACK SHEET CONTAINING THE SAME

Disclosed are a lyocell fiber, a nonwoven fibrous aggregate containing the lyocell fiber, and a mask pack sheet containing the nonwoven fibrous aggregate. The lyocell fiber contains a monofilament having a cross-section of a flat yarn or a flat yarn having a curvature. Such lyocell fiber exhibits physical properties that could not be provided by existing lyocell fibers having a circular cross-section, and thus can afford excellent properties such as excellent bendability for industrial material application, good feel and soft gloss property for clothes or interior applications, and transparency, skin adhesion, absorption, and maintenance of a solvent such as moisture, and a smooth surface feel for a mask pack nonwoven fibrous aggregate application. 1. A lyocell fiber comprising lyocell multifilaments prepared by spinning a lyocell spinning dope comprising a cellulose pulp and a solvent ,wherein a monofilament making up the multifilament has a cross-section having a central major axis (L1) and a central minor axis (S1), a ratio of lengths of the central major axis (L1) and the central minor axis (S1) is 1.5:1˜10.5:1, and a ratio of a length of a central major axis (L1) and a length of a straight line (L2) between both ends of the central major axis is 1.0-1.5:1.2. The lyocell fiber according to claim 1 , wherein the length of the central major axis (L1) is 12˜42 μm claim 1 , and the length of the central minor axis (S1) is 4-7 μm.3. The lyocell fiber according to claim 1 , wherein the monofilament has fineness of 1.0-4.0 denier claim 1 , and a value obtained by dividing a cross-sectional perimeter of the monofilament by fineness is 24.5 to 32 μm/denier.4. A nonwoven fibrous aggregate containing lyocell fiber claim 1 ,wherein a monofilament making up a lyocell fiber has a cross-section having a central major axis (L1) and a central minor axis (S1), a ratio of lengths of the central major axis (L1) and the central minor axis (S1) is 1.5:1˜10.5:1, and a ratio of a ...

Polyethylene yarn, method for manufacturing the same, and skin cooling fabric comprising the same

Disclosed is a polyethylene yarn which enables the manufacture of a skin cooling fabric having dimensional stability and having improved weavability which enables the manufacture of a skin cooling fabric capable of providing a user with a soft tactile sensation as well as a cooling sensation, a method for manufacturing the same, and a skin cooling fabric including the same. The polyethylene yarn has a shrinkage stress at 70° C. and 100° C. of 0.005 to 0.075 g/d, respectively. Also, the polyethylene yarn has a “dry thermal shrinkage rate at 70° C.” of 0.1 to 0.5%, a “dry thermal shrinkage rate at 100° C.” of 0.5 to 1.5%, and a “wet thermal shrinkage rate at 100° C.” of 0.1 to 1%.

Polyethylene yarn, method for manufacturing the same, and skin cooling fabric comprising the same

Disclosed is a polyethylene yarn capable of providing a user with a soft tactile sensation as well as a cooling feeling or a cooling sensation, and also having improved weavability that enables the manufacture of a skin cooling fabrics having excellent pilling resistance, abrasion resistance, cuttability, and sewability, a method for manufacturing the same, and a skin cooling fabric including the same. In a strength-elongation curve of the polyethylene yarn obtained by measuring at ambient temperature, (i) elongation at strength of 1 g/d is 0.5 to 3%, (ii) elongation at strength of 3 g/d is 5.5 to 10%, and (iii) a difference between elongation at strength of 4 g/d and elongation at maximum strength is 5.5 to 25%, and the polyethylene yarn has toughness of 55 to 120 J/m 3 at ambient temperature.

Film for tire inner liner, and preparation method thereof

The present invention relates to a film for a tire inner liner, particularly to a film for a tire inner liner including: a base film including a copolymer or a mixture of polyamide-based resin and a polyether-based resin; and an adhesive layer including a resorcinol-formalin-latex (RFL)-based adhesive, wherein the base film has a tensile recovery rate of 30 % to 80 %. The film for a tire inner liner of the present invention may exhibit an excellent gas barrier property with a thin thickness, and thus enables light weight of a tire and improvement in automobile mileage, and enables easier forming during a tire manufacturing process.

methods for the production of l-methionine and related products

métodos para produção de l-metionina e produtos relacionados um método compreendendo: (a) tratamento de um enzimaticamente o-acetilhomoserine (oahs) licor de fermentação para a produção de l-metionina e uma fonte de acetato, (b) separar pelo menos uma porção da referida l-metionina a partir de, pelo menos, uma fração da referida fonte de acetato para formar separada a l-metionina e de um licor residual, que compreende uma fonte de acetato-, e (c) recuperar pelo menos uma porção da referida fonte de acetato a partir do referido licor residual recuperado de etilo. methods for producing l-methionine and related products, a method comprising: (a) treating an enzymatically o-acetylomoserine (oahs) fermentation liquor for producing l-methionine and an acetate source, (b) separating at least one said portion of said 1-methionine from at least a fraction of said acetate source to form separately the 1-methionine and a residual liquor comprising a source of acetate, and (c) recovering at least a portion of said acetate source from said recovered ethyl residual liquor.

A nonwoven for air filtration and a preparation method thereof

The present invention relates to a spunbonded filament nonwoven fabric and a method of preparing the same, and particularly to a multilayered spunbonded filament nonwoven fabric of which the fineness of the filaments decreases from an air inlet part toward an air outlet part, and a method of preparing the same. The spunbonded nonwoven fabric of the present invention can be used as an air filter for power generation equipment for a gas turbine, because it can reduce a pressure loss, promote filter efficiency, and extend the lifetime for use by using fiber layers having different denier.

Inflatable two-layer fabrics

The present invention relates to an inflatable two-layer fabric, and provides an inflatable two-layer fabric comprising two separated fabric layers, woven at the same time using a weaving machine, and an attachment area attaching said two fabric layers. Since the inflatable fabric of the present invention requires no sewing, it can significantly reduce manufacturing costs. Particularly, since all fabric layers are formed of a plain weave, airbags having a variety of shapes can be manufactured using a jacquard weaving machine. Further, since it has superior weaving property and smoothness, it can be utilized for side curtain airbags and other shock-absorbing products.

Film for a tyre inner liner and a production method therefor

This invention relates to a film for a tire inner liner, which includes a copolymer including a polyamide-based segment and 5 ∼ 50 wt% of a polyether-based segment relative to the total weight of the film, and has a thickness 30 ∼ 300 µ m, and to a method of manufacturing the film for a tire inner liner, including polymerizing a polyamide-based resin or its precursor with 5∼50 wt% of a polyether-based resin relative to the total weight of the film, thus preparing a copolymer, and melting and extruding the copolymer, thus forming a film.

Polyester yarn and a production method therefor

The present invention provides a polyester yarn, wherein a room-temperature strength-elongation index (X 0 ) indicating a ratio (T°/S°) of tensile strength (T°) to tensile elongation (S 0 ) of the polyester yarn, measured at room temperature, and a primary high-humidity strength-elongation index (X 1 ) indicating a ratio (T 1 /S 1 ) of tensile strength (T 1 ) to tensile elongation (S 1 ) of the polyester yarn, measured after heat-treating the polyester yarn under conditions of a temperature of 85°C and a relative humidity (RH) of 95±5% for 168 hours, are optimized in a predetermined range. The polyester yarn is advantageous in that, since it has a low initial Young's modulus and exhibits excellent mechanical under severe conditions of high temperature and high humidity, when it is used for a fabric for an airbag, the fabric can exhibit excellent storability, shape stability and air blocking effects, and can minimize the impact applied to an occupant, thereby protecting the occupant safely.

Lyocell material for cigarette filter and method for preparing same

Disclosed are a lyocell material for a cigarette filter and a method of preparing the same, wherein a crimped tow is manufactured using a lyocell multifilament including low-strength lyocell monofilaments, and thus the ultimately prepared lyocell material for a cigarette filter can exhibit low strength, thereby increasing processing efficiency during the manufacture of the cigarette filter.

Load supporting structure of electric booster type brake apparatus

A load supporting structure of an electric booster type brake apparatus, includes: a housing including a rear housing member and a front housing member so as to define a receiving space therein; a ball screw shaft rotatably installed in the receiving space of the housing; a rotor installed at one side of the ball screw shaft so as to transmit torque; a first bearing installed between the rear housing member and one side of the rotor and configured to support a radial direction load due to a hydraulic reaction force; and a second bearing installed between the front housing member and the other side of the rotor and configured to support an axial direction load due to a hydraulic reaction force. Therefore, the number of components and the thickness of the housing are reduced, and therefore weight reduction of the electric booster type brake apparatus may be implemented.

Container lid with a rfid tag

The present invention provides a container lid with a removable built-in RFID tag which makes it easy to perform general management, such as information management, inventory management, use list management, hazardous material management, etc., of contents stored in the container. The container lid with the RFID tag according to the present invention includes a main body which covers an open end of a container, and a tag mount which protrudes from the upper surface of the main body. The tag mount is open on the upper end thereof and has therein an installation space, into which the RFID tag is inserted through the open upper end of the tag mount. The container lid further includes a tag holder which holds and supports the RFID tag in the tag mount, and a tag mount cover which covers the open upper end of the tag mount.

Ultrasound imaging apparatus and method of controlling the same

Disclosed herein is an ultrasound imaging apparatus including a beamformer to transmit or receive an ultrasound signal; a first probe connection unit in which a first probe connector is placed; and a second probe connection unit in which a second probe connector is placed. The second probe connection unit is connected to the beamformer via the first probe connection unit, and the first probe connection unit includes a disconnecting unit to disconnect the first probe connection unit and the second probe connection unit from each other.

Method for preparing low-molecular lignin derivative

A method of preparing a low-molecular lignin derivative comprises the step of: preparing lignin by hydrolyzing lignocellulosic biomass with an acid; preparing a first mixture by mixing 100 parts by weight of the lignin and 500 parts or more by weight of a phenolic compound; preparing a second mixture by mixing the first mixture with a solvent including the hydrophobic polar solvent; and recovering a low-molecular lignin derivative from the second mixture.

Integral polishing pad and manufacturing method thereof

An integral polishing pad includes an elastic support layer and a polishing layer, which is formed on the elastic support layer and has a higher hardness than the elastic support layer. The elastic support layer and the polishing layer are made from materials chemically compatible with each other so that a structural border between the elastic support layer and the polishing layer does not exist. In addition, the integral polishing pad also includes a transparent region, which is transparent to a light source used to detect the surface state of an object being polished and integrated with the other elements of the integral polishing pad. The integral polishing pad has high planarization efficiency and uniform properties, and thus can be reliably used for polishing. In addition, the integral polishing pad prevents a congestion of a polishing slurry and facilitates delivery of the polishing slurry. The integral polishing pad does not need an adhesive for connecting elements or a process for bonding the elements, thereby simplifying manufacturing processes.

Casting method and casting device

Gießverfahren zum Gießen von geschmolzenem Metall zum Füllen eines Gießraums, der in einer Form vorgesehen ist, wobei das Verfahren umfasst: sequentielles, aber diskontinuierliches Gießen von Teilen des geschmolzenen Metalls in den Gießraum mit nur einer Düse mehrere Male mit Zeitintervallen, wobei die Zeitintervalle derart festgelegt werden, dass eine obere Oberfläche einer nicht verfestigten flüssigen Phase des geschmolzenen Metalls, das in der Form aufgenommen ist, nicht von der Form beabstandet, sondern mit dieser in Kontakt ist. A casting method for casting molten metal to fill a casting space provided in a mold, the method comprising: sequential but discontinuous pouring of molten metal into the pouring space with a single nozzle several times at time intervals; wherein the time intervals are set such that an upper surface of an unconsolidated liquid phase of the molten metal received in the mold is not spaced from the mold but in contact therewith.

An inflatable fabrics and an air-bag

Ultrasound imaging apparatus and method of controlling the same

Disclosed herein is an ultrasound imaging apparatus including a beamformer to transmit or receive an ultrasound signal; a first probe connection unit in which a first probe connector is placed; and a second probe connection unit in which a second probe connector is placed. The second probe connection unit is connected to the beamformer via the first probe connection unit, and the first probe connection unit includes a disconnecting unit to disconnect the first probe connection unit and the second probe connection unit from each other.

Polyester fiber for airbag

Air bag cushion, and system containing same

The present invention relates to an airbag cushion and an airbag system including the same, and particularly to an airbag cushion, including: at least one fabric; and seam parts connecting the fabric, wherein deviation of upper seam thread length per a unit length of the fabric between the first seam part sewed in forward direction and the second seam part sewed in reverse direction in the seam parts is 15% or less, a method of preparing the same, and an airbag system including the same. The airbag cushion of the present invention is superior in working stability and unfolding performance because of the optimized properties of the seam parts, provides superior shape stability and air-tight effect at the same time, and can protect a passenger by minimizing the shock given to the passenger.

Polyethylene multifilament textured yarn and method of manufacturing same

In the present disclosure, there are provided a polyethylene multifilament interlaced yarn having excellent weavability as well as enabling the manufacture of a protective product having high cut resistance and excellent fit by giving sufficient entanglements to the polyethylene multifilament yarn, and a method for manufacturing the same.

Microorganism producing o-acetyl-homoserine and the method of producing o-acetyl-homoserine using the microorganism

Disclosed is a strain of Escherichia sp., capable of producing O-acetyl homoserine in high yield, with the introduction and enhancement therein of the activity of: homoserine acetyl transferase, aspartokinase and homoserine dehydrogenase; and at least one enzyme selected from a group consisting of phosphoenolpyruvate carboxylase, aspartate aminotransferase and aspartate semi-aldehyde dehydrogenase. Also, a method of producing O-acetyl homoserine using the strain is provided.

Polyethylene multifilament textured yarn and method of manufacturing same

Film for tire inner liner, and preparation method thereof

Polyester sewing thread for airbag, and method for manufacturing same

The present invention relates to a polyester sewing thread usable for a fabric for an airbag and a cushion for an airbag. In particular, the present invention relates to a polyester sewing thread for an airbag obtained by doubling and twisting a specific polyester yarn including a plurality of polyester filaments, and bonding the polyester yarn in the manner of in-bonding, out-bonding, or in-and-out bonding, and a preparation method thereof. According to the present invention, the polyester fiber having high strength, middle elongation, and dry heat shrinkage may be used to implement excellent physical properties similar to those of a sewing thread using existing polyamide fiber (Nylon 66), and to implement sufficient performance as a sewing thread for an airbag when conducting a static test after the cushion for an airbag is actually manufactured. Therefore, the present invention provides a polyester sewing thread for an airbag having excellent performance and high competitive price to be used as a substitute for existing polyamide (Nylon 66) sewing thread for an airbag.

Method for increasing the solubility of methionine by mineral addition and acid treatment

The present invention relates to a method for enhancing the solubility of methionine. More particularly, the present invention relates to a method for increasing the solubility of in which mineral and sulfuric acid are added at an appropriate ratio to enhance the methionine solubility, thereby overcoming the problem of low solubility of methionine in water.

Inside leaflet of book

An inside leaflet of a book is provided which is bond-bound with pages of the book to provide an advertisement. The inside leaflet includes an advertisement printed part and a binding part. Catchphrases or illustrations for advertisement are printed on at least one side of the advertisement printed part. The binding part is configured to be bound with the pages along an edge of the inside leaflet such that the binding part has less binding portions than those of the pages in order to leave no traces or marks when the inside leaflet is detached from the book. Accordingly, since the inside leaflet is able to be bound to pages of various kinds of books and easily removed from the books without leaving any traces or marks in the books, the inside leaflet contributes to extension of the application range of advertisements and improvement of advertisement efficiency.

Side curtain airbag and airbag system comprising the same

The present invention relates to a side curtain airbag and an airbag system comprising the same. The side curtain airbag according to the present invention comprises an inflating part having gas inflatability, a non-inflating part supporting the inflating part, and an adhered part constituting a boundary between the inflating part and the non-inflating part. The adhered part is coated with a seam sealant and sewed. The initial maximum pressure of the inflating part is 40 KPa or more when injecting a gas therein with an instant pressure of at least 10 bar, and the pressure after 6 seconds is 25 KPa or more. The side curtain airbag according to the present invention optimizes to apply the method of seam sealant coating and sewing on the adhered part constituting a boundary between the inflating part and the non-inflating part. Thus, it can keep the internal gas pressure of the airbag to the extent of protecting passengers safely at rollover.

Film for tire inner liner and preparation method thereof

The present invention relates to a film for a tire inner liner including: a base film layer including polyamide-based resin and a copolymer including polyamide-based segments and polyether-based segments; and an adhesive layer including a resorcinol-formalin-latex (RFL)-based adhesive, wherein there is little difference between properties in an MD (machine direction) and a TD (transverse direction), and a method for manufacturing a film for a tire inner liner, including melting the polyamide-based resin and the copolymer at 230 to 300 °C, extruding the molten substance under specific die gap conditions to form a base film, and forming an adhesive layer including a resorcinol-formalin-latex (RFL)-based adhesive on the base film.

Lyocell material for cigarette filter and method for preparing same

Flip chip mount type of bump, manufacturing method thereof, and bonding method for flip chip using non conductive adhesive

Disclosed are a flip chip bump (30), a manufacturing method thereof, and a flip chip bonding method using a non-conductive adhesive (70). More particularly, disclosed are a flip chip bump (30) having a spherical or mushroom shape, which can increase the effect of plastic deformation by virtue of a low pressure applied during flip chip bonding and achieve improved durability by reducing the trapping of a non-conductive adhesive (70) therein and consequently, improved reliability of the bonding joint, a method for manufacturing the flip chip bump (30), and a flip chip bonding method.

Method for manufacturing a polyester yarn

The present invention relates to polyester fiber that can be used as fabric for an airbag. In particular, the present invention relates to a process for producing polyester fiber comprising conducting an esterification reaction of a dicarboxylic acid composition and glycol in a predetermined ratio; conducting a polycondensation reaction of the oligomer produced by the esterification reaction; conducting a solid state polymerization of the polymer produced by the polycondensation; and melt spinning and drawing the polyester chip produced by the solid state polymerization, fiber for an airbag produced thereby, and fabric for an airbag comprising the same. The polyester fiber prepared according to the present invention has low modulus, high strength, and high contraction. And, the polyester fiber of the present invention may significantly lower stiffness and achieve excellent mechanical properties, thus providing excellent packing property, shape stability and gas barrier effect when used as fabric for an airbag.

Method for increasing methionine productivity using a mixture of methyl mercaptan and dimethyl sulfide

The present invention relates to a method for increasing L-methionine productivity and organic acid productivity. More particularly, the present invention relates to a method which involves adding a mixture containing methyl mercaptan and dimethyl sulfide at a appropriate ratio to O-acetyl homoserine or O-succinyl homoserine and to an enzyme having an activity of converting methionine precursor into L-methionine, so as to perform an enzyme reaction, to thereby improve the conversion rate of L-methionine and organic acid from the L-methionine precursor, and thus increasing L-methionine yield as compared to conventional method.

Method for preparing low-molecular lignin derivative

Method for preparation of therapeutic b cells against autoimmune diseases which are induced by autoimmune cytotoxicity

Disclosed is a method for the preparation of a cell therapeutic agent for autoimmune immune diseases based on the ability of B cells to control the differentiation of T cells, which are responsible for self tissue destruction. The method comprises (A) separating B cells from blood or bone marrow of an individual suffering from an autoimmune disease selected from among multiple sclerosis, type 1 diabetes mellitus, rheumatoid arthritis, and Hashimoto's thyroiditis; (B) primarily culturing the B cells in a culture medium supplemented with a B cell proliferation-inducing factor in the presence of an antigen causing the autoimmune disease! and (C) secondarily culturing the B cells in a fresh culture medium supplemented with a B cell proliferation-inducing factor in the presence of an antigen causing the autoimmune disease. A cell therapeutic agent therefor can be prepared. The cell therapeutic agent shows highly persistent therapeutic efficacy against autoimmune diseases, such as multiple sclerosis, type 1 diabetes mellitus, rheumatoid arthritis, and Hashimoto' s thyroiditis without side effects.