Fringed surface structures obtainable in a compression molding process

Disclosed are mono-layer or multi-layer films, sheets, or coatings wherein at least on layer comprises a fringed surface microstructure (1), a process for making these items and uses thereof. Further disclosed are articles of manufacture comprising such film, sheet, or coating.

Hydrogenated block polymers having elasticity and articles made therefrom

Reversible, heat-set, elastic fibers, and method of making and article made from same

A reversible, heat-set covered fiber is described, the covered fiber comprising: A. A core comprising an elastic fiber comprising a substantially crosslinked, temperature-stable, olefin polymer, and B. A cover comprising an inelastic fiber. The fiber is heat-set by a method comprising: (a) Stretching the covered fiber by applying a stretching force to the covered fiber; (b) Heating the stretched covered fiber of (a) to a temperature in excess of the crystalline melting point of the olefin polymer for a period of time sufficient to at least partially melt the olefin polymer; (c) Cooling the stretched and heated covered fiber of (b) to a temperature below the crystalline melting point of the olefin polymer for a period of time sufficient to solidify the polymer; and (d) Removing the stretching force from the covered fiber.

Breathable films and method of making the same

The present disclosure provides breathable films and method of making the same. The breathable films according to the present disclosure comprise a film layer comprising polymeric composition comprising equal to or less than 60 wt % of a linear low density polyethylene resin which exhibits each of the following properties: (1) a CEF fraction from 70 to 90 C of equal to or greater than 80% of the total CEF fractions; (2) a melt index, I2, measured according to ASTM D 1238 (2.16 kg @190C), in the range of equal to or greater than 2.0 g/10 min and equal to or less than 5.0 g/10 min; and (3) a melt flow ratio, 110/12, of equal to or less than 6.7.

Process for Producing Ultrasonic Seal, and Film Structures and Flexible Containers with Same

The present disclosure is directed to processes for producing ultrasonic sealable film structures and flexible containers with ultrasonic seals. The film structure includes a first multilayer film and a second multilayer film. Each multilayer film includes a backing layer and a seal layer. Each seal layer includes an ultrasonic sealable olefin-based polymer (USOP) having the following properties: 115-. (canceled)16. A flexible container comprising:a multilayer film having a backing layer and a seal layer, the multilayer film folded upon itself to form a first film portion and a second film portion such that opposing seal layers contact each other; (a) a heat of melting, ΔHm, less than 130 J/g,', '(b) a peak melting temperature, Tm, less than 125° C.,', '(c) a storage modulus in shear (G′) from 50 MPa to 500 MPa, and', '(d) a loss modulus in shear (G″) greater than 10 MPa;', 'the multilayer films arranged such that the seal layer of the first multilayer film is in contact with the seal layer of the second multilayer film; and, 'each seal layer comprising an ultrasonic sealable olefin-based polymer (USOP) having the following propertiesthe seal layers form an ultrasonic seal having a seal strength from 30 N/15 mm to 80 N/15 mm.17. The flexible container of wherein the second film portion is superimposed on the first film portion to form a common peripheral edge;a 2-fold zone and a 4-fold zone; andthe 2-fold zone and the 4-fold zone each forming an ultrasonic seal having a seal strength from 30 N/15 mm to 80 N/15 mm.18. The flexible container of wherein the 2-fold zone comprises at least a portion of the common peripheral edge.19. The flexible container of wherein the 4-fold zone comprises at least a portion of a longitudinal seal.20. The flexible container of wherein the backing layer is a material selected from the group consisting of PET claim 16 , polyamide claim 16 , BOPP claim 16 , and metal foil.21. The flexible container of wherein the USOP is a material ...

COMPOSITION SUITABLE FOR STRETCH HOOD, METHOD OF PRODUCING THE SAME, AND ARTICLES MADE THEREFROM

The instant invention provides a composition suitable for stretch hood, method of producing the same, and articles made therefrom. The article according to the present invention comprises a multi-layer film according to the present invention has a thickness of at least 3 mils comprising at least one inner layer and two exterior layers, wherein the inner layer comprises at least 50 weight percent polyethylene copolymer having a melt index less than 2 grams/10 minutes, a density less than or equal to 0.910 g/cm, a total heat of fusion less than 120 Joules/gram and a heat of fusion above 115° C. of less than 5 Joules/gram, the total heat of fusion of the inner layer less than the heat of fusion of either of the two exterior layers, and wherein the multi-layer film has an elastic recovery of at least 40% when stretched to 100% elongation. 1. An article comprising a multi-layer film having a thickness of at least 3 mils comprising at least one inner layer and two exterior layers , wherein the inner layer comprises at least 50 weight percent polyethylene copolymer having a melt index less than 2 grams/10 minutes , a density less than or equal to 0.910 g/cm , an total heat of fusion less than 120 Joules/gram and a heat of fusion above 115° C. of less than 5 Joules/gram , and a total heat of fusion of the inner layer is less than a heat of fusion of either of the two exterior layers , and wherein the multi-layer film has an elastic recovery of at least 40% when stretched to 100% elongation.2. The article of claim 1 , wherein the exterior layers are less than 50 weight percent of the total film.3. The article of wherein the film has 3 layers and is made using a blown film process.4. The article of claim 1 , wherein the article is a stretch hood film structure.5. The article of wherein the polyethylene copolymer in the inner layer has a M/Mof at least 2.5.6. The article of wherein the polyethylene copolymer of the inner layer is characterized by a Comonomer Distribution ...

Composition for stretch hood, method of producing the same, and articles made therefrom

The instant invention provides a composition suitable for stretch hood, method of producing the same, and articles made therefrom. The article according to the present invention comprises a multi-layer film according to the present invention has a thickness of at least 3 mils comprising at least one inner layer and two exterior layers, wherein the inner layer comprises at least 50 weight percent polyethylene copolymer having a melt index less than 2 grams/10 minutes, a density less than or equal to 0.910 g/cm 3 , a total heat of fusion less than 120 Joules/gram and a heat of fusion above 115° C. of less than 5 Joules/gram, the total heat of fusion of the inner layer less than the heat of fusion of either of the two exterior layers, and wherein the multi-layer film has an elastic recovery of at least 40% when stretched to 100% elongation.

STRETCH HOOD FILMS

A multi-layer film structure is made from a specific polyethylene copolymer comprising the inner layer and is useful as a stretch hood film structure. The polyethylene copolymer can be characterized by a Comonomer Distribution Constant greater than about 45.

Articles having elevated temperature elasticity made from irradiated and crosslinked ethylene polymers and method for making the same

The present invention relates to elastic articles comprising a crosslinked or crosslinkable ethylene polymer and a method for making the same. In particular, the invention relates to a shaped article (e.g. film or fiber) characterized by improved elasticity at elevated temperatures and comprising a substantially cured, irradiated, or crosslinked (or curable, irradiated or crosslinkable) homogeneously branched ethylene polymer. The improved elastic article of the present invention is particularly suitable for use in applications where good elasticity must be maintained at elevated temperatures such as, for example, personal hygiene items and disposable infection-control garments at body temperatures of about 100° F. (38° C.).

Articles having elevated temperature elasticity made from irradiated and crosslinked ethylene polymers and method for making the same

BREATHABLE FILMS AND METHOD OF MAKING THE SAME

The present disclosure provides breathable films and method of making the same. The breathable films according to the present disclosure comprise a film layer comprising polymeric composition comprising equal to or less than 60 wt % of a linear low density poly-ethylene resin which exhibits each of the following properties: (1) a CEF fraction from 70 to 90 C of equal to or greater than 80% of the total CEF fractions; (2) a melt index, I2, measured according to ASTM D 1238 (2.16 kg @190C), in the range of equal to or greater than 2.0 g/10 min and equal to or less than 5.0 g/10 min; and (3) a melt flow ratio, 110/12, of equal to or less than 6.7. 115-. (canceled)16. A film layer comprising: a CEF fraction from 70° C. to 90° C. of greater than or equal to 80% of the total CEF fractions;', {'sub': '2', 'a melt index (I) measured according to ASTM D 1238 at 190° C., of greater than or equal to 2.0 g/10 min and less than or equal to 5.0 g/10 min; and'}], 'a polymeric composition comprising less than or equal to 60 wt. % of a linear low density polyethylene which exhibits each of the following properties{'sub': 10', '2, 'a melt flow ratio (I/I) of less than or equal to 6.7.'}17. The film layer of claim 16 , wherein the linear low density polyethylene further exhibits a density from 0.915 g/cmto 0.94 g/cm claim 16 , when measured according to ASTM D792.18. The film layer of claim 16 , wherein the linear low density polyethylene comprises units derived from ethylene and units derived from at least one a-olefin comonomer.19. The film layer of claim 18 , wherein the a-olefin comonomer is 1-hexene.20. The film layer of claim 16 , wherein the linear low density polyethylene comprises no units derived from 1-octene.21. The film layer of claim 16 , wherein the polymeric composition further comprises from greater than 0 wt. % to less than or equal to 5 wt. % one or more compounds selected from the group consisting of pigments and antioxidants.22. The film layer of claim 16 , ...

MULTILAYER FILMS, ARTICLES COMPRISING THE SAME, METHODS OF MANUFACTURING MULTILAYER FILMS

The present invention provides multilayer films, packages formed from such films, and methods of making multilayer films. In one aspect, a multilayer film comprises multilayer film comprising at least 3 layers, each layer having opposing facial surfaces and arranged in the order A/B/C, wherein Layer A comprises a high density polyethylene having a M/Mof at least 6.0, a Mof at least 500,000 grams/mol as measured by triple detector GPC, and a density of 0.957-0.970 g/cm, wherein the high density polyethylene comprises at least 90 percent by weight of Layer A; Layer B comprises a gas permeation layer, wherein a top facial surface of Layer B is in adhering contact with a bottom facial surface of Layer A; and Layer C comprises a high density polyethylene having a M/Mof at least 6.0, a Mof at least 500,000 grams/mol as measured by triple detector GPC, and a density of 0.957-0.970 g/cm, wherein the high density polyethylene comprises at least 90 percent by weight of Layer C and wherein a top facial surface of Layer C is in adhering contact with a bottom facial surface of Layer B, wherein the film is oriented in the machine direction and wherein the film exhibits a normalized carbon dioxide transmission rate of at least 3000 cm·mil/100 in/day when measured according to ASTM F-2476 at 23° C., 0% relative humidity, and 1 atm, and wherein the film exhibits a ratio of the carbon dioxide transmission rate to an oxygen transmission rate of at least 4.0, when the oxygen transmission rate is measured according to ASTM D3985 at 23° C., 0% relative humidity, and 1 atm. 2. The multilayer film of claim 1 , wherein the oxygen and carbon dioxide transmission rates of Layer B are less than the oxygen and carbon dioxide transmission rates of Layer A and Layer C.3. The multilayer film of claim 1 , wherein the gas permeation layer comprises polyether block amide claim 1 , poly(ethylene-vinyl acetate) claim 1 , a propylene-based olefin block copolymer claim 1 , a polyolefin plastomer claim 1 ...

POLYETHYLENE BLEND COMPOSITION SUITABLE FOR BLOWN FILM, METHOD OF PRODUCING THE SAME, AND FILMS MADE THEREFROM

The instant invention provides a polyethylene blend composition suitable for blown film, method of producing the same, and films made therefrom. The polyethylene blend composition suitable for blown film according to the present invention comprises the melt blending product of: (a) less than or equal to 4 percent by weight of a low density polyethylene (LDPE) having a density in the range of from 0.915 to 0.935 g/cm 3 , and a melt index (I 2 ) in the range of from greater than 0.8 to less than or equal to 5 g/10 minutes, and a molecular weight distribution (M w /M n ) in the range of from 6 to 10; (b) 90 percent or greater by weight of a heterogenous linear low density polyethylene (hLLDPE) having a density in the range of from 0.917 to 0.950 g/cm 3 , and a melt index (I 2 ) in the range of from 0.1 to less than or equal to 5 g/10 minutes; (c) optionally a hydrotalcite based neutralizing agent; (d) optionally one or more nucleating agents; and (e) optionally one or more antioxidants. When the polyethylene blend-composition is formed into a film via blown film process, the output rate is improved at least 6 percent relative to a similar linear low density polyethylene.

Polyethylene blend composition suitable for blown film, method of producing the same, and films made therefrom

The instant invention provides a polyethylene blend composition suitable for blown film, method of producing the same, and films made therefrom. The polyethylene blend composition suitable for blown film according to the present invention comprises the melt blending product of: (a) less than or equal to 4 percent by weight of a low density polyethylene (LDPE) having a density in the range of from 0.915 to 0.935 g/cm3, and a melt index (I2) in the range of from greater than 0.8 to less than or equal to 5 g/10 minutes, and a molecular weight distribution (Mw/Mn) in the range of from 6 to 10; (b) 90 percent or greater by weight of a heterogenous linear low density polyethylene (hLLDPE) having a density in the range of from 0.917 to 0.950 g/cm3, and a melt index (I2) in the range of from 0.1 to less than or equal to 5 g/10 minutes; (c) optionally a hydrotalcite based neutralizing agent; (d) optionally one or more nucleating agents; and (e) optionally one or more antioxidants. When the polyethylene ...

POLYOLEFIN BASED FILMS WITH IMPROVED WATER VAPOR TRANSMISSION RATES

The present invention provides a film suitable for applications requiring high water vapor transmission rates. The film comprises a polyolefin polymer together with from 1 to 30 percent by weight of the film of a hydrophilic polymer and from 30 to 75 percent by weight of the film of a filler having a hydrophilic surface functionality. 1. A formulated compound for an enhanced water vapor transmission rate films comprising:b) a polyolefin polymer; where the polyolefin polymer is an ethylene vinyl acetate copolymer, an ethylene acrylic acid copolymer, an ethylene ethyl acrylate copolymer, an ethylene butyl acrylate copolymer, a low density polyethylene, an ultra low density polyethylene, a very low density polyethylene, a linear low density polyethylene, a medium density polyethylene, a high density polyethylene, a homopolymer polypropylene, a polypropylene random copolymer, a polypropylene impact copolymers, a propylene-based elastomer or a propylene-based elastomer;c) from 1 to 50 percent by weight of the film of a hydrophilic polymer; andd) from 30 to 85 percent by weight of a filler with a hydrophilic surface functionality; where the percent by weight is based on the weight of the film.2. A film suitable for applications requiring enhanced water vapor transmission rates claim 1 , said film comprising the formulated compound of and wherein the film has a thickness of 150 microns or less.3. (canceled)4. The film of wherein the hydrophilic polymer is selected from the group consisting of poly(ethylene glycol) claim 2 , polyethylene oxide claim 2 , polypropylene glycols claim 2 , and copolymers thereof claim 2 , polyvinyl alcohol claim 2 , polyvinyl acetate claim 2 , thermoplastic polyurethane and combinations thereof.5. The film of wherein the film comprises from 1 to 15% by weight of the hydrophilic polymer.6. The film of further comprising a compatibilizer.7. The film of wherein the compatibilizer comprises a base resin and the base resin is selected from the group ...

Process to produce enhanced melt strength ethylene/alpha-olefin copolymers and articles thereof

An ethylene/α-olefin copolymer comprising units derived from ethylene; and units derived from at least one α-olefin; wherein the ethylene/α-olefin copolymer has a density in the range of from 0.90 to 0.94 g/cc; a melt index (I2) in the range of from 0.05 to 50 dg/min; an Mw/Mn of from 3 to 5; and from 300 to 500 vinyl unsaturations per 1,000,000 carbon atoms in the ethylene/α-olefin copolymer is provided. Also provided is a process for producing an ethylene/α-olefin copolymer comprising: (1) polymerizing ethylene and one or more α-olefins in a polymerization reactor; (2) thereby producing an enhanced melt strength ethylene/α-olefin copolymer having from 300 to 500 vinyl unsaturation units per 1,000,000 carbon atoms, a density in the range of from 0.90 to 0.94 g/cc; a melt index (I2) in the range of from 0.05 to 50 dg/min; and a Mw/Mn of from 3 to 5.

Cushioning network structures, and methods of manufacturing thereof

A cushioning network structure comprising a plurality of random loops arranged in a three-dimensional orientation, wherein the plurality of random loops are formed from an ethylene/a-olefin interpolymer composition having a highest DSC temperature melting peak in the range of from 90.0° C. to 115.0° C.; a zero shear viscosity ratio (ZSVR) in the range from 1.40 to 2.10; a density in the range of from 0.860 to 0.925 g/cc, a melt index (12) in a range of from 1 to 25 g/10 minutes when measured according to ASTM D1238 at 190° C. and 2.16 kg, a molecular weight distribution (Mw/Mn) in the range of from 2.0 to 4.5.

Stretch Hoods Made From ULDPE-Rich Formulations

Polymeric, mono- or multilayer stretch hood packaging film with an overall density that does not exceed 0.920 g/cc comprises: A. At least one core layer comprising: 1. At least 50 wt % ULDPE with a density of 0.900 to 0.920 g/cc; and 2. Optionally at least one of: a. LDPE with a density of 0.915 to 0.925 g/cc, and b. EVA with a VA content of 4 to 20 wt %; and B. Optionally, two skin layers, each skin layer independently comprising: 1. At least 50 wt % ULDPE with a density of 0.900 to 0.920 g/cc; and 2. Optionally an LDPE with a density of 0.915 to 0.925 g/cc. 1. A polymeric , multilayer stretch hood packaging film with an overall density that does not exceed 0.920 g/cc and comprising: 1. At least 50 wt % of ULDPE with a density of 0.900 to 0.920 g/cc; and', a. LDPE with a density of 0.915 to 0.925 g/cc, and', 'b. EVA with a VA content of 4 to 20 wt %; and, '2. At least one of], 'A. At least one core layer comprising 1. At least 50 wt % of ULDPE with a density of 0.900 to 0.920 g/cc; and', '2. Optionally an LDPE with a density of 0.915 to 0.925 g/cc., 'B. At least one skin layer comprising2. The film of in which the ULDPE comprises at least 75 wt % of the core layer.34-. (canceled)5. The film of in which LDPE is present in the skin layer.6. The film of comprising one core layer and two skin layers.7. The film of in which EVA comprises at least 5 wt % units of VA.8. The film of in which the skin layers are the same.9. The film of in which-the skin layers are different.10. The film of comprising: 1. 10-25 wt % of the film, and', '2. 100 to 50 wt % of ULDPE with a density of 0.900-0.920 g/cc, and 0 to 50 w % LDPE with a density of 0.915-0.925 g/cc, and, 'A. Two skin layers each comprising 1. 80-50 wt % of the film, and', '2. 100 to 50 wt % ULDPE with a density of 0.900-0.920 g/cc, and 0 to 50 w % LDPE with a density of 0.915-0.925 g/cc., 'B. A core layer comprising11. The film of comprising: 1. 10-25 wt % of the film, and', '2. 100 to 50 wt % ULDPE with a density of 0. ...

Stretch fabric with improved chemical resistance and durability

Durable stretch fabrics are made and processed from one or more inelastic and one or more elastic fibers, for example, a substantially linear, homogeneously branched ethylene polymer. The fabrics can be made by any process, such as, weaving, knitting, etc., and from any combination of crosslinked, heat-resistant olefin elastic and inelastic (“hard”) fibers, for example, cotton and wool. These fabrics exhibit excellent chemical, resistance (for example chlorine or caustic resistance) and durability, that is they retain their shape and feel (“hand”) over repeated exposure to processing conditions, such as stone-washing, dye-stripping, PET-dyeing and the like, and service conditions, such as washing, drying, etc.

Polyethylene compositions with improved optical properties

Embodiments of a polyethylene composition comprise at least 50% by wt. of at least one polyethylene polymer; and 0.001 to 2% by wt. of bisamide nucleating agent utilized to reduce haze within the polyethylene composition.

Hydrogenated block copolymers having elasticity and articles made therefrom

The present invention relates to a fiber produced form a composition comprising at least one hydrogenated block copolymer and, optionally, at least one other polymer selected from the group consisting of a reactive tailored liquid polyurethane, an elastomeric or sulfonated ethylene/vinyl aromatic interpolymer, an elastomeric ethylene/C3-C20α-olefin interpolymer, an C3-C20α-olefin/conjugated diene interpolymer, an elastic polypropylene polymer, an enhanced polypropylene polymer, an elastomeric thermoplastic polyurethane, an elastic copolyester, a partially hydrogenated block copolymer, an elastic polyamide, a hydroxyl functionalized polyether (or polyetheramine), a styrene/conjugated diene interpolymer, and an elastomeric metallocene-catalyzed synthetic polymer or a blend or formulated system thereof.

Fiber comprising polyethylene blend

The present disclosure is directed to a fiber that is composed of a polymeric blend including (i) 95 wt % to 99 wt % of a high density ethylene-based polymer having a Mw/Mn from 2.0 to 3.0 and (ii) from 5 wt % to 1 wt % of a low density ethylene-based polymer having a melt index from 5 g/10 min to 15 g/10 min. The fiber has a density from 1 denier to 2 denier and a 3% secant modulus from 8.5 g/denier to 20 g/denier.

STRETCH FABRICS WITH IMPROVED CHEMICAL RESISTANCE

Durable stretch fabrics are made and processed from one or more crosslinked, heat-resistant olefin elastic fibers, e.g., a substantially linear, homogeneously branched ethylene polymer. The fabrics can be made by any process, e.g., weaving, knitting, etc., and from any combination of crosslinked, heat-resistant olefin elastic and inelastic (“hard”) fibers, e.g., cotton and wool. These fabrics exhibit excellent chemical, e.g., chlorine, resistance and durability, e.g., they retain their shape and feel (“hand”) over repeated exposure to processing conditions, e.g., stone-washing, dye-stripping, PET-dyeing and the like, and service conditions, e.g., washing, drying, etc.

Elastic laminates, method of manufacture thereof and articles comprising the same

Disclosed herein is a multilayer laminate comprising a film comprising an ethylene-based elastomer; a first non-woven layer in contact with a first surface of the film; and a second non-woven layer in contact with a second surface of the film; wherein the second surface of the film is opposedly disposed to the first surface of the film; wherein at least one of the first non-woven layer or the second non-woven layer comprises a non-woven web; and wherein the non-woven web is formed from a bicomponent fiber having a first component comprising an polyethylene-based polymer and a second component comprising a polymer having a melting point that is higher than the polyethylene-based polymer, wherein at least a portion of a surface of the bicomponent fiber comprises the first component.

BREATHABLE FILMS AND ARTICLES INCORPORATING SAME

Breathable films formed from polyethylene are provided that can have desirable properties. In one aspect, a breathable film comprises a layer formed from a composition comprising a first composition, wherein the first composition comprises at least one ethylene-based polymer and wherein the first composition comprises a MWCDI value greater than 0.9, and a melt index ratio (I10/I2) that meets the following equation: I10/I2≧7.0−1.2×log(I2). 1. A breathable film comprising a first composition , wherein the first composition comprises at least one ethylene-based polymer and wherein the first composition comprises a MWCDI value greater than 0.9 , and a melt index ratio (I10/I2) that meets the following equation: I10/I2≧7.0−1.2×log(I2).2. The breathable film of claim 1 , wherein the breathable film further comprises 40 to 65 weight percent of a mineral filler.3. The breathable film of claim 1 , wherein the first composition has a MWCDI value less than claim 1 , or equal to claim 1 , 10.0.4. The breathable film of claim 1 , wherein the first composition has a density of 0.910 to 0.940 g/cmand a melt index (I2) of 0.5 to 30 g/10 minutes.5. The breathable film of claim 1 , wherein the film has a basis weight of 10 to 20 g/m.6. The breathable film of claim 1 , further comprising a second polymer claim 1 , and wherein the second polymer is selected from the following: a LLDPE claim 1 , a VLDPE claim 1 , a LDPE claim 1 , a MDPE claim 1 , a HDPE claim 1 , a HMWHDPE claim 1 , a propylene-based polymer claim 1 , a polyolefin plastomer claim 1 , a polyolefin elastomer claim 1 , an olefin block copolymer claim 1 , an ethylene vinyl acetate claim 1 , an ethylene acrylic acid claim 1 , an ethylene methacrylic acid claim 1 , an ethylene methyl acrylate claim 1 , an ethylene ethyl acrylate claim 1 , an ethylene butyl acrylate claim 1 , a polyisobutylene claim 1 , a maleic anhydride-grafted polyolefin claim 1 , an ionomer of any of the foregoing claim 1 , or a combination thereof.7. The ...

Method of making elastic articles having improved heat-resistance

The present invention relates to a method for making a heat-resistant elastic article and a heat-resistant elastic article. The invention especially relates to a method of making elastic fibers and polymeric elastic fibers wherein the elastic fibers are capable of withstanding dyeing and heat-setting processes that typically are conducted at elevated temperatures (such as 110-230° C. and especially at greater than or equal to 130° C. for minutes). The inventive method comprises radiation crosslinking an article (or plurality of articles) under an inert or oxygen limited atmosphere (for example, in N2, argon, helium, carbon dioxide, xenon and/or a vacuum) wherein the article (or articles) comprises at least one amine stabilizer and preferably another optional stabilizer additive. More preferably, the radiation crosslinking is performed at a low temperature (−50 to 40° C.). The elastic article (or articles) comprises a homogeneously branched ethylene interpolymer (preferably a substantially ...

ARTIFICIAL TURF YARN

An artificial turf comprising a turf yarn prepared from an ethylene-based polymer composition comprising less than or equal to 100 percent by weight of the units derived from ethylene; and less than 30 percent by weight of units derived from one or more α-olefin comonomers; wherein said ethylene-based polymer composition is characterized by having a Comonomer Distribution Constant of equal to or greater than 40, a vinyl unsaturation of less than 100 vinyls per one million carbon atoms present in the backbone of the ethylene-based polymer composition; a zero shear viscosity ratio (ZSVR) equal to or greater than 1.75; a density in the range of 0.915 to 0.930 g/cm, a melt index (1) in the range of from 0.8 to 5 g/10 minutes, a molecular weight distribution (M/M) in the range of from 2 to 3.6, and a molecular weight distribution (M/M) equal to or less than 3; and wherein the turf yarn exhibits one or more of the following properties (a) shrink of less than 4.8%, and (b) curl of less than 0.5 is provided. 1. An artificial turf comprising: less than or equal to 100 percent by weight of the units derived from ethylene; and', 'less than 30 percent by weight of units derived from one or more α-olefin comonomers;', {'sup': '3', 'sub': 2', 'w', 'n', 'z', 'w, 'wherein said ethylene-based polymer composition is characterized by having a Comonomer Distribution Constant of equal to or greater than 40, a vinyl unsaturation of less than 100 vinyls per one million carbon atoms present in the backbone of the ethylene-based polymer composition; a zero shear viscosity ratio (ZSVR) equal to or greater than 1.75; a density in the range of 0.915 to 0.930 g/cm, a melt index (1) in the range of from 0.8 to 5 g/10 minutes, a molecular weight distribution (M/M) in the range of from 2 to 3.6, and a molecular weight distribution (M/M) equal to or less than 3; and'}], 'a turf yarn prepared from an ethylene-based polymer composition comprisingwherein the turf yarn exhibits one or more of the ...

Method of making elastic articles having improved heat-resistance

The present invention relates to a method for making a heat-resistant elastic article and a heat-resistant elastic article. The invention especially relates to a method of making elastic fibers and polymeric elastic fibers wherein the elastic fibers are capable of withstanding dyeing and heat-setting processes that typically are conducted at elevated temperatures (such as 110-230° C. and especially at greater than or equal to 130° C. for minutes). The inventive method comprises radiation crosslinking an article (or plurality of articles) under an inert or oxygen limited atmosphere (for example, in N2, argon, helium, carbon dioxide, xenon and/or a vacuum) wherein the article (or articles) comprises at least one amine stabilizer and preferably another optional stabilizer additive. More preferably, the radiation crosslinking is performed at a low temperature (-50 to 40° C.). The elastic article (or articles) comprises a homogeneously branched ethylene interpolymer (preferably a substantially ...

ELASTIC LAMINATES, METHOD OF MANUFACTURE THEREOF AND ARTICLES COMPRISING THE SAME

Disclosed herein is a multilayer laminate comprising a film comprising an ethylene-based elastomer; a first non-woven layer in contact with a first surface of the film; and a second non-woven layer in contact with a second surface of the film; wherein the second surface of the film is opposedly disposed to the first surface of the film; wherein at least one of the first non-woven layer or the second non-woven layer comprises a non-woven web; and wherein the non-woven web is formed from a bicomponent fiber having a first component comprising an polyethylene-based polymer and a second component comprising a polymer having a melting point that is higher than the polyethylene-based polymer, wherein at least a portion of a surface of the bicomponent fiber comprises the first component. 1. A multilayer laminate comprising:a film comprising an ethylene-based elastomer;a first non-woven layer in contact with a first surface of the film; anda second non-woven layer in contact with a second surface of the film;wherein the second surface of the film is opposedly disposed to the first surface of the film;wherein at least one of the first non-woven layer or the second non-woven layer comprises a non-woven web; andwherein the non-woven web is formed from a bicomponent fiber having a first component comprising an polyethylene-based polymer and a second component comprising a polymer having a melting point that is higher than the polyethylene-based polymer, wherein at least a portion of a surface of the bicomponent fiber comprises the first component;wherein the film and at least one of the first non-woven layer or the second non-woven layer are joined at a plurality of ultrasonic bond sites.2. The multilayer laminate of claim 1 , wherein the ethylene-based elastomer is an olefin block copolymer claim 1 , a random copolymer claim 1 , or a combination thereof.3. The multilayer laminate of claim 2 , wherein the olefin block copolymer is an ethylene/α-olefin block copolymer.4. The ...

Method of making elastic articles having improved heat-resistance

The present invention relates to a method for making a heat-resistant elastic article and a heat-resistant elastic article. The invention especially relates to a method of making elastic fibers and polymeric elastic fibers wherein the elastic fibers are capable of withstanding dyeing and heat-setting processes that typically are conducted at elevated temperatures (such as 110-230° C. and especially at greater than or equal to 130° C. for minutes). The inventive method comprises radiation crosslinking an article (or plurality of articles) under an inert or oxygen limited atmosphere (for example, in N 2 , argon, helium, carbon dioxide, xenon and/or a vacuum) wherein the article (or articles) comprises at least one amine stabilizer and preferably another optional stabilizer additive. More preferably, the radiation crosslinking is performed at a low temperature (−50 to 40° C.). The elastic article (or articles) comprises a homogeneously branched ethylene interpolymer (preferably a substantially linear ethylene interpolymer), a substantially hydrogenated block polymer, or a combination of the two. The heat-resistant elastic articles (especially fibers) are useful in various durable or repeated-use fabric applications such as, but not limited to, clothing, under-garments, and sports apparel. The heat-resistant elastic fibers can be conveniently formed into fabrics using well-known techniques such as, for example, by using co-knitting techniques with cotton, nylon, and/or polyester fibers.

Composition suitable for stretch hood, method of producing the same, and articles made therefrom

The instant invention provides a composition suitable for stretch hood, method of producing the same, and articles made therefrom. The article according to the present invention comprises a multi-layer film according to the present invention has a thickness of at least 3 mils comprising at least one inner layer and two exterior layers, wherein the inner layer comprises at least 50 weight percent polyethylene copolymer having a melt index less than 2 grams/10 minutes, a density less than or equal to 0.910 g/cm 3 , a total heat of fusion less than 120 Joules/gram and a heat of fusion above 115° C. of less than 5 Joules/gram, the total heat of fusion of the inner layer less than the heat of fusion of either of the two exterior layers, and wherein the multi-layer film has an elastic recovery of at least 40% when stretched to 100% elongation.

Fiber Comprising Polyethylene Blend

The present disclosure is directed to a fiber that is composed of a polymeric blend including (i) 95 wt % to 99 wt % of a high density ethylene-based polymer having a Mw/Mn from 2.0 to 3.0 and (ii) from 5 wt % to 1 wt % of a low density ethylene-based polymer having a melt index from 5 g/10 min to 15 g/10 min. The fiber has a density from 1 denier to 2 denier and a 3% secant modulus from 8.5 g/denier to 20 g/denier.

Process to Produce Enhanced Melt Strength Ethylene/Alpha-Olefin Copolymers and Articles Thereof

An ethylene/α-olefin copolymer comprising units derived from ethylene; and units derived from at least one α-olefin; wherein the ethylene/α-olefin copolymer has a density in the range of from 0.90 to 0.94 g/cc; a melt index (I) in the range of from 0.05 to 50 dg/min; an Mw/Mn of from 3 to 5; and from 300 to 500 vinyl unsaturations per 1,000,000 carbon atoms in the ethylene/α-olefin copolymer is provided. Also provided is a process for producing an ethylene/α-olefin copolymer comprising: (1) polymerizing ethylene and one or more α-olefins in a polymerization reactor; (2) thereby producing an enhanced melt strength ethylene/α-olefin copolymer having from 300 to 500 vinyl unsaturation units per 1,000,000 carbon atoms, a density in the range of from 0.90 to 0.94 g/cc; a melt index (I) in the range of from 0.05 to 50 dg/min; and a Mw/Mn of from 3 to 5. 1. An ethylene/α-olefin copolymer comprising:units derived from ethylene; andunits derived from at least one α-olefin;{'sub': '2', 'wherein the ethylene/α-olefin copolymer has a density in the range of from 0.90 to 0.94 g/cc; a melt index (I) in the range of from 0.05 to 50 dg/min; an Mw/Mn of from 3 to 5; and'}from 300 to 500 vinyl unsaturations per 1,000,000 carbon atoms in the ethylene/α-olefin copolymer, and wherein the ethylene/α-olefin copolymer is produced using a polymerization step occurring at a temperature of at least 205° C.2. A process for producing an ethylene/α-olefin copolymer comprising the steps of: (1) polymerizing ethylene and one or more α-olefins in a polymerization reactor wherein the ethylene/α-olefin copolymer is produced using a polymerization step occurring at a temperature of at least 205° C.; (2) thereby producing an enhanced melt strength ethylene/α-olefin copolymer having from 300 to 500 vinyl unsaturation units per 1 ,000 ,000 carbon atoms , a density in the range of from 0.90 to 0.94 g/cc; a melt index (I) in the range of from 0.05 to 50 dg/min; and a Mw/Mn of from 3 to 5.3. The process ...

Spunbond nonwoven fabrics

The instant invention provides nonwoven fabrics and staple or binder fibers prepared from an ethylene-based polymer having a Comonomer Distribution Constant in the range of from greater than from 100 to 400, a vinyl unsaturation of less than 0.1 vinyls per one thousand carbon atoms present in the backbone of the ethylene-based polymer composition; a zero shear viscosity ratio (ZSVR) in the range from 1 to less than 2; a density in the range of 0.930 to 0.970 g/cm3, a melt index (12) in the range of from 15 to 30 or from 10 to 50 g/10 minutes, a molecular weight distribution (Mw/Mn) in the range of from 2 to 3.5, and a molecular weight distribution (Mz/Mw) in the range of from less than 2.

CUSHIONING NETWORK STRUCTURES, AND METHODS OF MANUFACTURING THEREOF

A cushioning network structure comprising a plurality of random loops arranged in a three-dimensional orientation, wherein the plurality of random loops are formed from an ethylene/a-olefin interpolymer composition having a highest DSC temperature melting peak in the range of from 90.0° C. to 115.0° C.; a zero shear viscosity ratio (ZSVR) in the range from 1.40 to 2.10; a density in the range of from 0.860 to 0.925 g/cc, a melt index (12) in a range of from 1 to 25 g/10 minutes when measured according to ASTM D1238 at 190° C. and 2.16 kg, a molecular weight distribution (Mw/Mn) in the range of from 2.0 to 4.5. 1. A cushioning network structure comprising a plurality of random loops arranged in a three-dimensional orientation , wherein the plurality of random loops are formed from an ethylene/α-olefin interpolymer composition having a highest DSC temperature melting peak in the range of from 90.0° C. to 115.0° C.; a zero shear viscosity ratio (ZSVR) in the range from 1.40 to 2.10; a density in the range of from 0.860 to 0.925 g/cc; a melt index (I2) in a range of from 1 to 25 g/10 minutes when measured according to ASTM D1238 at 190° C. and 2.16 kg; and a molecular weight distribution (Mw/Mn) in the range of from 2.0 to 4.5.2. The cushioning network structure of claim 1 , wherein the ethylene/α-olefin interpolymer composition comprises a first homogeneously branched random ethylene/α-olefin copolymer and a second homogeneously branched random ethylene/α-olefin copolymer.3. The cushioning network structure of claim 2 , wherein the first homogeneously branched random ethylene/α-olefin copolymer has a density from 0.860 g/cc to 0.925 g/cc.4. The cushioning network structure of claim 2 , wherein the first homogeneously branched random ethylene/α-olefin copolymer has a melt index of from 0.2 g/10 min to 25 g/10 min.5. The cushioning network structure of claim 2 , wherein the first homogeneously branched random ethylene/α-olefin copolymer has a density that is at least 0. ...

Profile or molding having a fringed surface structure

Disclosed are mono-layer or multi-layer profiles or moldings wherein at least one layer comprises a fringed surface microstructure, a process for making these items and uses thereof. Further disclosed are articles of manufacture comprising such profile or molding.

Articles having elevated temperature elasticity made from irradiated and crosslinked ethylene polymers and method for making the same

The present invention relates to elastic articles comprising a crosslinked or crosslinkable ethylene polymer and a method for making the same. In particular, the invention relates to a shaped article (e.g. film or fiber) characterized by improved elasticity at elevated temperatures and comprising a substantially cured, irradiated, or crosslinked (or curable, irradiated or crosslinkable) homogeneously branched ethylene polymer. The improved elastic article of the present invention is particularly suitable for use in applications where good elasticity must be maintained at elevated temperatures such as, for example, personal hygiene items and disposable infection-control garments at body temperatures of about 100° F. (38° C.).

Multilayer films, articles comprising the same, methods of manufacturing multilayer films

The present invention provides multilayer films, packages formed from such films, and methods of making multilayer films. In one aspect, a multilayer film comprises multilayer film comprising at least 3 layers, each layer having opposing facial surfaces and arranged in the order A/B/C, wherein a top facial surface of Layer B is in adhering contact with a bottom facial surface of Layer A; wherein a top facial surface of Layer C is in adhering contact with a bottom facial surface of Layer B, wherein the film is oriented in the machine direction and wherein the film exhibits a normalized carbon dioxide transmission rate of at least 3000 cm3·mil/100 in2/day, and wherein the film exhibits a ratio of the carbon dioxide transmission rate to an oxygen transmission rate of at least 4.0.

Bi-component fiber and fabrics made therefrom

The instant invention provides bi-component fibers and fabrics made therefrom. The bi-component fiber according to the present invention comprises: (a) from 5 to 95 percent by weight of a first component comprising at least one or more first polymers, based on the total weight of the bi-component fiber; (b) from 5 to 95 percent by weight of a second component comprising at least an ethylene-based polymer composition, based on the total weight of the bicomponent fiber, wherein said ethylene-based polymer composition comprises; (i) less than or equal to 100 percent by weight of the units derived from ethylene; and (ii) less than 30 percent by weight of units derived from one or more α-olefin comonomers; wherein said ethylene-based polymer composition is characterized by having a Comonomer Distribution Constant in the range of from greater than from 100 to 400, a vinyl unsaturation of less than 0.1 vinyls per one thousand carbon atoms present in the backbone of the ethylene-based polymer composition; a zero shear viscosity ratio (ZSVR) in the range from 1 to less than 2; a density in the range of 0.920 to 0.970 g/cm3, a melt index (I2) in the range of from 10 to 40 g/10 minutes, a molecular weight distribution (Mw/Mn) in the range of from 1.8 to 3.0, and a molecular weight distribution (Mz/Mw) in the range of from less than 2; and wherein said bi-component fiber has a denier per filament in the range of from 0.5 to 10 g/9000 m.

Stretch hood films

A multi-layer film structure is made from a specific polyethylene copolymer comprising the inner layer and is useful as a stretch hood film structure. The polyethylene copolymer can be characterized by a Comonomer Distribution Constant greater than about 45.

POLYETHYLENE COMPOSITIONS WITH IMPROVED OPTICAL PROPERTIES

Embodiments of a polyethylene composition comprise at least 50% by wt. of at least one polyethylene polymer; and 0.001 to 2% by wt. of bisamide nucleating agent utilized to reduce haze within the polyethylene composition. 2. The polyethylene composition of wherein the polyethylene polymer is copolymer of ethylene with alpha-olefin copolymers claim 1 , an ethylene homopolymer or combinations thereof.3. (canceled)4. The polyethylene composition according to wherein the polyethylene composition has a melt index (I)≦50 g/10 min claim 1 , wherein Iis measured according to ASTM D1238 at 190° C. and 2.16 kg load claim 1 , and a density about 0.855 to about 0.970 g/cm.5. The polyethylene composition according to wherein the polyolefin resin comprises 0.01-0.5% by wt of the nucleating agent.10. The polyethylene composition according to wherein R1 claim 1 , R2 claim 1 , or both are a C-Calkyl.11. The polyethylene composition according to wherein the polyethylene composition comprises greater than about 60% by wt. claim 1 , or preferably greater than about 80% by wt. polyethylene polymer.12. An article produced from the polyethylene composition of any of the preceding claims claim 1 , wherein the article has a haze value reduction of at least 20% when compared to an article having the same polyethylene polymer but free of the nucleating agent.13. The article of wherein the article is chosen from a blown film claim 12 , a cast film claim 12 , a molded article claim 12 , a melt-spun fiber claim 12 , or an extruded article claim 12 , wherein the extruded article is chosen form sheets claim 12 , pipes claim 12 , or tubes.14. (canceled)15. The polyethylene according to wherein said polyethylene composition has a density of about 0.910 to about 0.940 g/cm.16. The polyethylene according to wherein the polyethylene composition is substantially free of polypropylene.17. The polyethylene according to wherein polyethylene composition comprises 0.5% by weight to 15% by weight ...

CAST FILMS, AND ARTICLES MADE THEREFROM

Disclosed herein is a cast film comprising a polyethylene composition comprising the reaction product of ethylene and optionally one or more alpha-olefin comonomers, wherein said polyethylene composition is characterized by the following properties: a melt index, I2, measured according to ASTM D1238 (2.16 kg, 190° C.), of from 1 to 20 g/10 min; a density (measured according to ASTM D792) of from 0.935 to 0.970 g/cm3; a melt flow ratio, I/I, wherein Iis measured according to ASTM D1238 (10 kg, 190° C.) of from 5.5 to 7.0; a molecular weight distribution (Mw/Mn) of from 2.2 to 3.5; and a vinyl unsaturation of greater than 0.12 vinyls per one thousand carbon atoms present in the backbone of the composition. 1. A cast film comprising a polyethylene composition comprising the reaction product of ethylene and optionally one or more alpha-olefin comonomers , wherein said polyethylene composition is characterized by the following properties:{'sub': '2', 'a. a melt index, I, measured according to ASTM D 1238 (2.16 kg, 190° C.), of from 1 to 20 g/10 min;'}{'sup': '3', 'b. a density (measured according to ASTM D792) of from 0.940 to 0.970 g/cm;'}{'sub': 10', '2', '10, 'c. a melt flow ratio, I/I, wherein Iis measured according to ASTM D1238 (10 kg, 190° C.) of from 5.5 to 7.0;'}{'sub': w', 'n, 'd. a molecular weight distribution (M/M) of from 2.2 to 3.5; and'}e. a vinyl unsaturation of greater than 0.12 vinyls per one thousand carbon atoms present in the backbone of the composition.2. The cast film of claim 1 , wherein the cast film further comprises a low density polyethylene having a melt index claim 1 , I claim 1 , range of from 0.1-20 g/10 min.3. The cast film of claim 2 , wherein the cast film comprises from 5-30% of the low density polyethylene.4. The cast film of claim 1 , wherein the cast film is a monolayer film.5. The cast film of claim 1 , wherein the cast film is a multilayer film.6. The cast film of claim 1 , wherein the cast film is a cast embossed film.7. The ...

Process for producing ultrasonic seal, and film structures and flexible containers with same

The present disclosure is directed to processes for producing ultrasonic sealable film structures and flexible containers with ultrasonic seals. The film structure includes a first multilayer film and a second multilayer film. Each multilayer film includes a backing layer and a seal layer. Each seal layer includes an ultrasonic sealable olefin-based polymer (USOP) having the following properties: (a) a heat of melting, ΔHm, less than 130 J/g, (b) a peak melting temperature, Tm, less than 125° C., (c) a storage modulus in shear (G′) from 50 MPa to 500 MPa, and (d) a loss modulus in shear (G″) greater than 10 MPa. The multilayer films are arranged such that the seal layer of the first multilayer film is in contact with the seal layer of the second multilayer film. The seal layers form an ultrasonic seal having a seal strength from 30 N/15 mm to 80 N/15 mm when ultrasonically sealed at 4 N/mm seal force.

Reversible, heat-set, elastic fibers, and method of making and articles made from same

A reversible, heat-set covered fiber is described, the covered fiber comprising: A. A core comprising an elastic fiber comprising a substantially crosslinked, temperature-stable, olefin polymer, and B. A cover comprising an inelastic fiber. The fiber is head set by a method comprising: (a) Stretching the covered fiber by applying a stretching force to the covered fiber; (b) Heating the stretched covered fiber of (a) to a temperature in excess of the crystalline melting point of the olefin polymer for a period of time sufficient to at least partially melt the olefin polymer; (c) Cooling the stretched and heated covered fiber of (b) to a temperature below the crystalline melting point of the olefin polymer for a period of time sufficient to solidify the polymer; and (d) Removing the stretching force from the covered fiber.

Stretch hoods made from ULDPE-rich formulations

A polymeric, mono- or multilayer stretch hood packaging film with an overall density that does not exceed 0.920 g/cc includes: A. At least one core layer containing: 1. At least 50 wt % ULDPE with a density of 0.900 to 0.920 g/cc; and 2. Optionally at least one of: a. LDPE with a density of 0.915 to 0.925 g/cc, and b. EVA with a VA content of 4 to 20 wt %; and B. Optionally, two skin layers, each skin layer independently comprising: 1. At least 50 wt % ULDPE with a density of 0.900 to 0.920 g/cc; and 2. Optionally an LDPE with a density of 0.915 to 0.925 g/cc.

LINEAR LOW DENSITY POLYETHYLENE COMPOSITION SUITABLE FOR CAST FILM

The instant invention provides a linear low density polyethylene composition suitable for cast film, films made therefrom, and packaging devices comprising one or more such film layers. The linear low density polyethylene composition suitable for cast film according to the present invention comprises an ethylene/α-olefin interpolymer composition having a Comonomer Distribution Constant (CDC) in the range of from 40 to 200, for example from 40 to 150, a vinyl unsaturation of less than 0.12 vinyls per one thousand carbon atoms present in the backbone of the ethylene-based polymer composition; a zero shear viscosity ratio (ZSVR) in the range from 1.2 to 5, for example from 1.5 to 4; a density in the range of from 0.910 to 0.935, for example from 0.915 to 0.925, g/cm, a melt index (I) in a range of from 1 to 10, for example from 2 to 6 g/10 minutes, a molecular weight distribution (M/M) in the range of from 2 to 3.5. 1. A linear low density polyethylene composition suitable for cast film comprising:{'sup': '3', 'sub': 2', 'w', 'n, 'an ethylene/α-olefin interpolymer composition (LLDPE) having a Comonomer Distribution Constant (CDC) in the range of from 40 to 150, a vinyl unsaturation of less than 0.12 vinyls per one thousand carbon atoms present in the backbone of the ethylene-based polymer composition; a zero shear viscosity ratio (ZSVR) in the range from 1.5 to 4; a density in the range of from 0.915 to 0.925 g/cm, a melt index (I) in a range of from 2 to 6 g/10 minutes, a molecular weight distribution (M/M) in the range of from 2 to 3.5.'}2. A cast film comprising:{'sup': '3', 'sub': 2', 'w', 'n, 'a linear low density polyethylene composition comprising an ethylene/α-olefin interpolymer composition having a Comonomer Distribution Constant (CDC) in the range of from 40 to 150 (40 to 200), a vinyl unsaturation of less than 0.15 vinyls per one thousand carbon atoms present in the backbone of the ethylene-based polymer composition; a zero shear viscosity ratio (ZSVR) in ...

ELASTIC FIBERS HAVING REDUCED COEFFICIENT OF FRICTION

The present invention relates to crosslinked, olefin elastic fibers having a reduced coefficient of friction. More particularly the invention relates to crosslinked, olefin elastic fibers containing organic or inorganic fillers. Still more particularly, the present invention relates to crosslinked, polyethylene based elastic fibers containing inorganic fillers.

Process for Producing Ultrasonic Seal, and Film Structures and Flexible Containers with Same

The present disclosure is directed to processes for producing ultrasonic sealable film structures and flexible containers with ultrasonic seals. The film structure includes a first multilayer film and a second multilayer film Each multilayer film includes a backing layer and a seal layer. Each seal layer includes an ultrasonic sealable olefin-based polymer (USOP) having the following properties: (a) a heat of melting, ΔHm, less than 130 J/g, (b) a peak melting temperature, Tm, less than 125° C., (c) a storage modulus in shear (G′) from 50 MPa to 500 MPa, and (d) a loss modulus in shear (G″) greater than 10 MPa. The multilayer films are arranged such that the seal layer of the first multilayer film is in contact with the seal layer of the second multilayer film The seal layers form an ultrasonic seal having a seal strength from 30 N/15 mm to 80 N/15 mm when ultrasonically sealed at 4 N/mm seal force. 1. A process for producing an ultrasonic polymer seal comprising:preparing a multilayer film comprising a backing layer and a seal layer, the seal layer comprising an ultrasonic sealable olefin-based polymer (USOP) having the following properties:(a) a heat of melting, ΔHm, less than 130 J/g,(b) a peak melting temperature, Tm, less than 125° C.,(c) a storage modulus in shear (G′) from 50 MPa to 500 MPa, and(d) a loss modulus in shear (G″) greater than 10 MPa;contacting the seal layer of the multilayer film with a seal layer of a second multilayer film to form a seal area;subjecting the seal area to ultrasonic energy and a seal force from 2 N/mm to 6 N/mm; andforming an ultrasonic seal having a seal strength from 30 N/15 mm to 80 N/15 mm.2. The process of comprising subjecting the seal area to (i) ultrasonic energy and (ii) a seal force of 42 N/mm.3. The process of comprising placing the seal area between a horn and an anvil of an ultrasonic sealing apparatus; and subjecting the seal area to (i) ultrasonic energy and (ii) a seal force of 4 N/mm.4. A film structure ...

Elongated cross section elastic fibers for stable packages

An improved process for winding an elastic fiber onto a core for forming a package and/or warp beam for use in knitting or weaving operations is disclosed. The improvement comprises forming the elastic fiber into a shape having a fiber cross section such that the width of the fiber is at least three times the thickness of the fiber prior to winding the fiber onto the supply package. Another aspect of the invention involves forming elastic fiber using a extrusion melt spinning process with a die having one or more openings which have two generally perpendicular axes, wherein one axis is at least about 1.5, preferably at least about 3 times longer than the other axis. The fiber of the present invention having the elongated cross section can be used to make improved supply packages for knitting or weaving fabric and also for making improved nonwoven structures and improved binder fibers.

Process to produce enhanced melt strength ethylene/α-olefin copolymers and articles thereof

An ethylene/α-olefin copolymer comprising units derived from ethylene; and units derived from at least one α-olefin; wherein the ethylene/α-olefin copolymer has a density in the range of from 0.90 to 0.94 g/cc; a melt index (I2) in the range of from 0.05 to 50 dg/min; an Mw/Mn of from 3 to 5; and from 300 to 500 vinyl unsaturations per 1,000,000 carbon atoms in the ethylene/α-olefin copolymer is provided. Also provided is a process for producing an ethylene/α-olefin copolymer comprising: (1) polymerizing ethylene and one or more α-olefins in a polymerization reactor; (2) thereby producing an enhanced melt strength ethylene/α-olefin copolymer having from 300 to 500 vinyl unsaturation units per 1,000,000 carbon atoms, a density in the range of from 0.90 to 0.94 g/cc; a melt index (I2) in the range of from 0.05 to 50 dg/min; and a Mw/Mn of from 3 to 5.

Articles having elevated temperature elasticity made from irradiated and crosslinked ethylene polymers and method for making the same

The present invention relates to elastic articles comprising a crosslinked or crosslinkable ethylene polymer and a method for making the same. In particular, the invention relates to a shaped article (e.g. film or fiber) characterized by improved elasticity at elevated temperatures and comprising a substantially cured, irradiated, or crosslinked (or curable, irradiated or crosslinkable) homogeneously branched ethylene polymer. The improved elastic article of the present invention is particularly suitable for use in applications where good elasticity must be maintained at elevated temperatures such as, for example, personal hygiene items and disposable infection-control garments at body temperatures of about 100° F. (38° C.).

COMPOSITION FOR STRETCH HOOD, METHOD OF PRODUCING THE SAME, AND ARTICLES MADE THEREFROM

The instant invention provides a composition suitable for stretch hood, method of producing the same, and articles made therefrom. The article according to the present invention comprises a multi-layer film according to the present invention has a thickness of at least 3 mils comprising at least one inner layer and two exterior layers, wherein the inner layer comprises at least 50 weight percent polyethylene copolymer having a melt index less than 2 grams/10 minutes, a density less than or equal to 0.910 g/cm3, a total heat of fusion less than 120 Joules/gram and a heat of fusion above 115° C. of less than 5 Joules/gram, the total heat of fusion of the inner layer less than the heat of fusion of either of the two exterior layers, and wherein the multi-layer film has an elastic recovery of at least 40% when stretched to 100% elongation.

MICROPOROUS FILMS, AND ARTICLES MADE THERFROM

A microporous film comprising: 75 wt. % or greater of a high density polyethylene resin having a density of 0.957 g/cc-0.970 g/cc, a melt index of from 0.2 to 10 g/10 minutes, a molecular weight distribution, M/M, of greater than or equal to 6.0, and a Mof greater than or equal to 500,000 g/mol, wherein the microporous film is oriented in the machine direction and exhibits a normalized water vapor transmission rate greater than 50 g mil/(100 in·day). 1. A microporous film comprising:{'sub': w,cc', 'n,cc', 'z,abs, '75 wt. % or greater of a high density polyethylene resin having a density of 0.957 g/cc-0.970 g/cc, a melt index of from 0.2 to 10 g/10 minutes, a molecular weight distribution, M/M, of greater than or equal to 6.0, and a Mof greater than or equal to 500,000 g/mol;'}{'sup': '2', 'wherein the microporous film is oriented in the machine direction and exhibits a normalized WVTR greater than 50 g mil/(100 in·day).'}2. The film of claim 1 , wherein the high density polyethylene resin has greater than 5 wt. % of molecules with a molecular weight of 1×10or less.3. The film of claim 1 , wherein the film comprises less than 5 wt. % of filler.4. The film of claim 1 , wherein the film comprises 95 wt. % or greater of the high density polyethylene.5. The film of claim 1 , wherein the film is cold stretched in the machine direction claim 1 , and after the cold stretch claim 1 , the film is hot stretched in the machine direction.7. The film of claim 5 , wherein the cold stretch is performed at a temperature ranging from 10° C. to 50° C.9. The film of claim 5 , wherein the hot stretch is performed at a temperature ranging from 90° C. to 110° C.10. A breathable backsheet comprising the film of . Embodiments of the present disclosure generally relate to microporous films and applications of the microporous films to make hygiene and medical articles.Polyethylene films are widely used in hygiene absorbent products, such as, for example, diaper backsheets. Diaper backsheets ...

Cast films, and articles made therefrom

Disclosed herein is a cast film comprising a polyethylene composition comprising the reaction product of ethylene and optionally one or more alpha-olefin comonomers, wherein said polyethylene composition is characterized by the following properties: a melt index, I2, measured according to ASTM D1238 (2.16 kg, 190° C.), of from 1 to 20 g/10 min; a density (measured according to ASTM D792) of from 0.935 to 0.970 g/cm3; a melt flow ratio, I 10 /I 2 , wherein I 10 is measured according to ASTM D1238 (10 kg, 190° C.) of from 5.5 to 7.0; a molecular weight distribution (Mw/Mn) of from 2.2 to 3.5; and a vinyl unsaturation of greater than 0.12 vinyls per one thousand carbon atoms present in the backbone of the composition.

Stretch fabrics with improved chemical resistance

Durable stretch fabrics are made and processed from one or more crosslinked, heat-resistant olefin elastic fibers, e.g., a substantially linear, homogeneously branched ethylene polymer. The fabrics can be made by any process, e.g., weaving, knitting, etc., and from any combination of crosslinked, heat-resistant olefin elastic and inelastic (“hard”) fibers, e.g., cotton and wool. These fabrics exhibit excellent chemical, e.g., chlorine, resistance and durability, e.g., they retain their shape and feel (“hand”) over repeated exposure to processing conditions, e.g., stone-washing, dye-stripping, PET-dyeing and the like, and service conditions, e.g., washing, drying, etc.

Hydrogenated block copolymers having elasticity and articles made therefrom

The present invention relates to a fiber produced form a composition comprising at least one hydrogenated block copolymer and, optionally, at least one other polymer selected from the group consisting of a reactive tailored liquid polyurethane, an elastomeric or sulfonated ethylene/vinyl aromatic interpolymer, an elastomeric ethylene/C 3 -C 20 α-olefin interpolymer, an C 3 -C 20 α-olefin/conjugated diene interpolymer, an elastic polypropylene polymer, an enhanced polypropylene polymer, an elastomeric thermoplastic polyurethane, an elastic copolyester, a partially hydrogenated block copolymer, an elastic polyamide, a hydroxyl functionalized polyether (or polyetheramine), a styrene/conjugated diene interpolymer, and an elastomeric metallocene-catalyzed synthetic polymer or a blend or formulated system thereof.

Microporous films, and articles made therefrom

A microporous film comprising: 75 wt. % or greater of a high density polyethylene resin having a density of 0.957 g/cc-0.970 g/cc, a melt index of from 0.2 to 10 g/10 minutes, a molecular weight distribution, Mw,cc/Mn,cc, of greater than or equal to 6.0, and a Mz,abs of greater than or equal to 500,000 g/mol, wherein the microporous film is oriented in the machine direction and exhibits a normalized water vapor transmission rate greater than 50 g mil/(100 in2·day).

PROCESS TO PRODUCE ENHANCED MELT STRENGTH ETHYLENE/ALPHA-OLEFIN COPOLYMERS AND ARTICLES THEREOF

An ethylene/α-olefin copolymer comprising units derived from ethylene; and units derived from at least one α-olefin; wherein the ethylene/α-olefin copolymer has a density in the range of from 0.90 to 0.94 g/cc; a melt index (I) in the range of from 0.05 to 50 dg/min; an Mw/Mn of from 3 to 5; and from 300 to 500 vinyl unsaturations per 1,000,000 carbon atoms in the ethylene/α-olefin copolymer is provided. Also provided is a process for producing an ethylene/α-olefin copolymer comprising: (1) polymerizing ethylene and one or more α-olefins in a polymerization reactor; (2) thereby producing an enhanced melt strength ethylene/α-olefin copolymer having from 300 to 500 vinyl unsaturation units per 1,000,000 carbon atoms, a density in the range of from 0.90 to 0.94 g/cc; a melt index (I) in the range of from 0.05 to 50 dg/min; and a Mw/Mn of from 3 to 5. 118.-. (canceled)19. An ethylene/α-olefin copolymer comprising:units derived from ethylene; andunits derived from at least one α-olefin;{'sub': '2', 'wherein the ethylene/α-olefin copolymer has a density in the range of from 0.90 to 0.94 g/cc; a melt index (I) in the range of from 0.05 to 50 dg/min; an Mw/Mn of from 3 to 5; and'}from 300 to 500 vinyl unsaturations per 1,000,000 carbon atoms in the ethylene/α-olefin copolymer; and a melt strength of at least 3.0 cN measured via capillary rheometer at a standard test temperature of 190° C.20. A process for producing an ethylene/α-olefin copolymer comprising the steps of:(1) polymerizing ethylene and one or more α-olefins in a polymerization reactor wherein the ethylene/α-olefin copolymer is produced using a polymerization step occurring at a temperature of at least 205° C. in the presence of a multi-constituent catalyst system comprising a Ziegler-Natta catalyst composition including a magnesium and titanium containing precatalyst and a cocatalyst, wherein said precatalyst has a Ti:Mg ratio between 1.0:40 to 5.0:40 and in the presence of hydrogen from 0.01 to 0.04 mole ...

SPUNBOND NONWOVEN FABRICS

The instant invention provides nonwoven fabrics and staple or binder fibres prepared from an ethylene-based polymer having a Comonomer Distribution Constant in the range of from greater than from 100 to 400, a vinyl unsaturation of less than 0.1 vinyls per one thousand carbon atoms present in the backbone of the ethylene-based polymer composition; a zero shear viscosity ratio (ZSVR) in the range from 1 to less than 2; a density in the range of 0.930 to 0. 970 g/cm3, a melt index (12) in the range of from 15 to 30 or from 10 to 50 g/10 minutes, a molecular weight distribution (Mw/Mn) in the range of from 2 to 3.5, and a molecular weight distribution (Mz/Mw) in the range of from less than 2. 1. A non-woven fabric comprising monocomponent fibers prepared from an ethylene-based polymer composition comprising:less than or equal to 100 percent by weight of the units derived from ethylene; andless than 30 percent by weight of units derived from one or more α-olefin comonomers;{'sup': '3', 'sub': 2', 'w', 'n', 'z', 'w, 'wherein said ethylene-based polymer composition is characterized by having a Comonomer Distribution Constant in the range of from greater than from 100 to 400, a vinyl unsaturation of less than 0.1 vinyls per one thousand carbon atoms present in the backbone of the ethylene-based polymer composition; a zero shear viscosity ratio (ZSVR) in the range from 1 to less than 2; a density in the range of 0.930 to 0. 970 g/cm, a melt index (I) in the range of from 15 to 30 g/10 minutes, a molecular weight distribution (M/M) in the range of from 2 to 3.5, and a molecular weight distribution (M/M) in the range of from less than 2.'}2. The spunbond non-woven fabric according to the claim 1 , wherein said non-woven fabric is a spunbond non-woven fabric.3. The spunbond non-woven fabric according to the claim 1 , wherein said monocomponent fiber withstands a cabin pressures in the range of at least 3000 Pa.4. The spunbond non-woven fabric according to the claim 1 , wherein ...

BI-COMPONENT FIBER AND FABRICS MADE THEREFROM

The instant invention provides bi-component fibers and fabrics made therefrom. The bi-component fiber according to the present invention comprises: (a) from 5 to 95 percent by weight of a first component comprising at least one or more first polymers, based on the total weight of the bi-component fiber; (b) from 5 to 95 percent by weight of a second component comprising at least an ethylene-based polymer composition, based on the total weight of the bicomponent fiber, wherein said ethylene-based polymer composition comprises; (i) less than or equal to 100 percent by weight of the units derived from ethylene; and (ii) less than 30 percent by weight of units derived from one or more α-olefin comonomers; wherein said ethylene-based polymer composition is characterized by having a Comonomer Distribution Constant in the range of from greater than from 100 to 400, a vinyl unsaturation of less than 0.1 vinyls per one thousand carbon atoms present in the backbone of the ethylene-based polymer composition; a zero shear viscosity ratio (ZSVR) in the range from 1 to less than 2; a density in the range of 0.920 to 0.970 g/cm, a melt index (I) in the range of from 10 to 40 g/10 minutes, a molecular weight distribution (M/M) in the range of from 1.8 to 3.0, and a molecular weight distribution (M/M) in the range of from less than 2; and wherein said bi-component fiber has a denier per filament in the range of from 0.5 to 10 g/9000 m. 1. A bi-component fiber comprising:from 5 to 95 percent by weight of a first component comprising at least one or more first polymers, based on the total weight of the bi-component fiber; less than or equal to 100 percent by weight of the units derived from ethylene; and', 'less than 30 percent by weight of units derived from one or more a-olefin comonomers;', {'sup': '3', 'sub': 2', 'w', 'n', 'z', 'w, 'wherein said ethylene-based polymer composition is characterized by having a Comonomer Distribution Constant in the range of from greater than from ...

Breathable films and method of making the same

Bi-component fiber and fabrics made therefrom

The instant invention provides bi-component fibers and fabrics made therefrom. The bi-component fiber according to the present invention comprises: (a) from 5 to 95 percent by weight of a first component comprising at least one or more first polymers, based on the total weight of the bi-component fiber; (b) from 5 to 95 percent by weight of a second component comprising at least an ethylene-based polymer composition, based on the total weight of the bicomponent fiber, wherein said ethylene-based polymer composition comprises; (i) less than or equal to 100 percent by weight of the units derived from ethylene; and (ii) less than 30 percent by weight of units derived from one or more α-olefin comonomers; wherein said ethylene-based polymer composition is characterized by having a Comonomer Distribution Constant in the range of from greater than from 100 to 400, a vinyl unsaturation of less than 0.1 vinyls per one thousand carbon atoms present in the backbone of the ethylene-based polymer composition; a zero shear viscosity ratio (ZSVR) in the range from 1 to less than 2; a density in the range of 0.920 to 0.970 g/cm 3 , a melt index (I 2 ) in the range of from 10 to 40 g/10 minutes, a molecular weight distribution (M w /M n ) in the range of from 1.8 to 3.0, and a molecular weight distribution (M z /M w) in the range of from less than 2;; and wherein said bi-component fiber has a denier per filament in the range of from 0.5 to 10 g/9000 m.

Reversible, heat-set, elastic fibers, and method of making and articles made from same

'Method for preparing a heat cured invert elastic fiber, method for making a heat cured invert yarn and method for making warpers'.

"fibras elásticas, curadas pelo calor, reversíveis, método para fabricá-las e artigos feitos com as mesmas". descreve-se uma fibra coberta, curada pelo calor, reversível, compreendendo: (a) um núcleo compreendendo uma fibra elástica compreendendo um polímero olefínico, estável à mudança de temperatura, substancialmente reticulado; e (b) uma cobertura compreendendo uma fibra não elástica. a fibra é curada pelo calor por um método compreendendo: (a) esticar a fibra elástica aplicando uma força de estiramento à fibra coberta; (b) aquecer a fibra coberta esticada de (a) até uma temperatura que ultrapasse o ponto de fusão cristalino do polímero olefínico por um período de tempo suficiente para fundir pelo menos parcialmente o polímero olefínico; (c) resfriar a fibra coberta aquecida e estirada de (b) até uma temperatura abaixo do ponto de fusão cristalino por um período de tempo suficiente para solidificar o polímero; (d) remover a força de estiramento da fibra coberta. "Reversible heat-cured elastic fibers, method of manufacturing fibers and articles made of them". A reversible heat-cured, covered fiber comprising: (a) a core comprising an elastic fiber comprising a substantially cross-linked, temperature-stable, olefinic polymer; and (b) a cover comprising a non-elastic fiber. the fiber is heat cured by a method comprising: (a) stretching the elastic fiber by applying a stretching force to the covered fiber; (b) heating the stretched covered fiber from (a) to a temperature exceeding the crystalline melting point of the olefin polymer for a period of time sufficient to at least partially melt the olefin polymer; (c) cooling the heated and stretched covered fiber from (b) to a temperature below the crystalline melting point for a time sufficient to solidify the polymer; (d) remove the stretching force of the covered fiber.

Breathable films and articles incorporating same

Breathable films formed from polyethylene are provided that can have desirable properties. In one aspect, a breathable film comprises a layer formed from a composition comprising a first composition, wherein the first composition comprises at least one ethylene-based polymer and wherein the first composition comprises a MWCDI value greater than 0.9, and a melt index ratio (I10/I2) that meets the following equation: I10/I2 ≥7.0 - 1.2 x log (I2).

Breathable films and method of making the same

The present disclosure provides breathable films and method of making the same. The breathable films according to the present disclosure comprise a film layer comprising polymeric composition comprising equal to or less than 60 wt% of a linear low density polyethylene resin which exhibits each of the following properties: (1) a CEF fraction from 70 to 90 °C of equal to or greater than 80% of the total CEF fractions; (2) a melt index, I 2 , measured according to ASTM D 1238 (2.16 kg @ 190°C), in the range of equal to or greater than 2.0 g/10 min and equal to or less than 5.0 g/10 min; and (3) a melt flow ratio, I 10 /I 2 , of equal to or less than 6.7.

Breathable films and method of making the same

The present disclosure provides breathable films and method of making the same. The breathable films according to the present disclosure comprise a film layer comprising polymeric composition comprising equal to or less than 60 wt% of a linear low density polyethylene resin which exhibits each of the following properties: (1) a CEF fraction from 70 to 90 C of equal to or greater than 80% of the total CEF fractions; (2) a melt index, I2, measured according to ASTM D 1238 (2.16 kg @190C), in the range of equal to or greater than 2.0 g/10 min and equal to or less than 5.0 g/10 min; and (3) a melt flow ratio, I 10 /I 2 , of equal to or less than 6.7.

Reversible, heat-set, elastic fibers, and method of making and articles made from same

A reversible, heat-set covered fiber is described, the covered fiber comprising: A. A core comprising an elastic fiber comprising a substantially crosslinked, temperature-stable, olefin polymer; and B. A cover comprising an inelastic fiber. The fiber is heat-set by a method comprising: (a) Stretching the covered fiber by applying a stretching force to the covered fiber (b) Heating the stretched covered fiber of (a) to a temperature in excess of the crystalline melting point of the olefin polymer for a period of time sufficient to at least partially melt the olefin polymer; (c) Cooling the stretched and heated covered fiber of (b) to a temperature below the crystalline melting point of the olefin polymer for a period of time sufficient to solidify the polymer; and (d) Removing the stretching force from the covered fiber.

Spunbond nonwoven fabrics and staple or binder fibres

CONTINUOUS SPINNING NON-WOVEN CLOTH AND CONTINUOUS SPINNING NON-WOVEN CLOTH LAMINATE STRUCTURE

PANO NÃO-TECIDO, ESTRUTURA LAMINADA DE PANO NÃO-TECIDO DE FIAÇÃO CONTÍNUA, ESTRUTURA MULTICAMADA, COMPOSIÇÃO DE POLÍMERO À BASE DE ETILENO E FIBRA OU TECIDO A presente invenção provê não- tecidos ou fibras descontínuas ou ligantes preparadas com um polímero à base de etileno tendo uma Constante de Distribuição de Comonômero na faixa de mais que 100 a 400, uma insaturação vinílica menor que 0,1 vinila por mil átomos de carbono presentes na cadeia principal da composição de polímero à base de etileno; uma relação de viscosidade a cisalhamento zero (ZSVR) na faixa de 1 a menos que 2; uma densidade na faixa de 0,930 a 0,970 g/cm3, um índice de fusão (I2) na faixa de 15 a 30 ou de 10 a 50g/10 minutos, uma distribuição de peso molecular (Mw/Mn) na faixa de 2 a 3,5, e uma distribuição de peso molecular (Mz/Mw) na faixa menor que 2. NON-WOVEN CLOTH, CONTINUOUS SPINNING NON-WOVEN CLOTH LAMINATE STRUCTURE, MULTILAYER STRUCTURE, ETHYLENE-BASED POLYMER COMPOSITION AND FIBER OR FABRIC The present invention provides non-wovens or staple fibers or binders prepared with an ethylene-based polymer having a Comonomer Distribution Constant in the range of greater than 100 to 400, a vinyl unsaturation of less than 0.1 vinyl per thousand carbon atoms present in the backbone of the ethylene-based polymer composition; a zero shear viscosity ratio (ZSVR) in the range of 1 to less than 2; a density in the range of 0.930 to 0.970 g/cm3, a melt index (I2) in the range of 15 to 30 or 10 to 50g/10 minutes, a molecular weight distribution (Mw/Mn) in the range of 2 to 3 .5, and a molecular weight distribution (Mz/Mw) in the range less than 2.

Process to produce enhanced melt strength ethylene/alpha-olefin copolymers and articles thereof

Polyolefin based films with improved water vapor transmission rates

The present invention provides a film suitable for applications requiring high water vapor transmission rates. The film comprises a polyolefin polymer together with from 1 to 30 percent by weight of the film of a hydrophilic polymer and from 30 to 75 percent by weight of the film of a filler having a hydrophilic surface functionality.

Articles having elevated temperature elasticity made from irradiated and crosslinked ethylene polymers and method for making the same

The present invention relates to heat resistance elastic articles comprising a cured, irradiated, or crosslinked or ethylene polymer and a method for making the same. In particular, the invention relates to a shaped article (for example, film or fiber) characterized by improved elasticity at elevated temperatures and comprising a substantially cured, irradiated, or crosslinked homogeneously branched ethylene polymer. The improved elastic article of the present invention is particularly suitable for use in applications where good elasticity must be maintained at elevated temperatures such as, for example, personal hygiene items and disposable infection-control garments at body temperatures of about 100 °F (38 °C).

A linear low density polyethylene composition suitable for cast film

Microporous films, and articles made therefrom

A microporous film comprising: 75 wt.% or greater of a high density polyethylene resin having a density of 0.957 g/cc - 0.970 g/cc, a melt index of from 0.2 to 10 g/10 minutes, a molecular weight distribution, M w , cc /M n , cc , of greater than or equal to 6.0, and a M z,abs of greater than or equal to 500,000 g/mol, wherein the microporous film is oriented in the machine direction and exhibits a normalized water vapor transmission rate greater than 50 g mil/(100 in 2. day).

Polyolefin based films with improved water vapor transmission rates

The present invention provides a film suitable for applications requiring high water vapor transmission rates. The film comprises a polyolefin polymer together with from 1 to 30 percent by weight of the film of a hydrophilic polymer and from 30 to 75 percent by weight of the film of a filler having a hydrophilic surface functionality.

Spunbond nonwoven fabrics

The instant invention provides nonwoven fabrics and staple or binder fibres prepared from an ethylene-based polymer having a Comonomer Distribution Constant in the range of from greater than from 100 to 400, a vinyl unsaturation of less than 0.1 vinyls per one thousand carbon atoms present in the backbone of the ethylene-based polymer composition; a zero shear viscosity ratio (ZSVR) in the range from 1 to less than 2; a density in the range of 0.930 to 0. 970 g/cm3, a melt index (12 ) in the range of from 15 to 30 or from 10 to 50 g/10 minutes, a molecular weight distribution (Mw /Mn ) in the range of from 2 to 3.5, and a molecular weight distribution (Mz /Mw ) in the range of from less than 2.

ELASTIC LAMINATES, METHODS FOR MANUFACTURING AND ARTICLES THAT UNDERSTAND THEM

En la presente, se divulga un laminado de múltiples capas que comprende una película que comprende un elastómero basado en etileno; una primera capa no tejida en contacto con una primera superficie de la película; y una segunda capa no tejida en contacto con una segunda superficie de la película; en donde la segunda superficie de la película está dispuesta de forma opuesta a la primera superficie de la película; en donde por lo menos una de las siguientes: la primera capa no tejida o la segunda capa no tejida comprende un material continuo no tejido; y en donde el material continuo no tejido está formado por una fibra bicomponente que tiene un primer componente que comprende un polímero basado en polietileno y un segundo componente que comprende un polímero que tiene un punto de fusión que es superior al punto de fusión del polímero basado en polietileno, en donde por lo menos una porción de una superficie de la fibra bicomponente comprende al primer componente; en donde la película y por lo menos una de las siguientes: la primera capa no tejida o la segunda capa no tejida están unidas en una pluralidad de sitios de unión por ultrasonido. A multilayer laminate comprising a film comprising an ethylene based elastomer is disclosed herein; a first non-woven layer in contact with a first film surface; and a second non-woven layer in contact with a second surface of the film; wherein the second surface of the film is disposed opposite to the first surface of the film; wherein at least one of the following: the first nonwoven layer or the second nonwoven layer comprises a continuous nonwoven material; and wherein the continuous nonwoven material is formed by a bicomponent fiber having a first component comprising a polyethylene based polymer and a second component comprising a polymer having a melting point that is greater than the melting point of the based polymer in polyethylene, wherein at least a portion of a surface of the bicomponent fiber comprises the first ...

Process to produce enhanced melt strength ethylene/alpha-olefin copolymers and articles thereof

An ethylene/a-olefm copolymer comprising units derived from ethylene; and units derived from at least one α-olefm; wherein the ethylene/a-olefm copolymer has a density in the range of from 0.90 to 0.94 g/cc; a melt index (I2) in the range of from 0.05 to 50 dg/min; an Mw/Mn of from 3 to 5; and from 300 to 500 vinyl unsaturations per 1,000,000 carbon atoms in the ethylene/a-olefm copolymer is provided. Also provided is a process for producing an ethylene/ α-olefm copolymer comprising: (1) polymerizing ethylene and one or more α-olefms in a polymerization reactor; (2) thereby producing an enhanced melt strength ethylene/a-olefm copolymer having from 300 to 500 vinyl unsaturation units per 1,000,000 carbon atoms, a density in the range of from 0.90 to 0.94 g/cc; a melt index (I2) in the range of from 0.05 to 50 dg/min; and a Mw/Mn of from 3 to 5.

Bi-component fiber and fabrics made thereof

Cast films, and articles made therefrom

Disclosed herein is a cast film comprising a polyethylene composition comprising the reaction product of ethylene and optionally one or more alpha-olefin comonomers, wherein said polyethylene composition is characterized by the following properties: a melt index, I2, measured according to ASTM D1238 (2.16 kg, 190°C), of from 1 to 20 g/10 min; a density (measured according to ASTM D792) of from 0.935 to 0.970 g/cm3; a melt flow ratio, I 10 /I 2 , wherein I 10 is measured according to ASTM D1238 (10 kg, 190°C) of from 5.5 to 7.0; a molecular weight distribution (Mw/Mn) of from 2.2 to 3.5; and a vinyl unsaturation of greater than 0.12 vinyls per one thousand carbon atoms present in the backbone of the composition.

BREATHABLE FILMS AND THEIR MANUFACTURING METHOD

La presente descripción proporciona películas transpirables y su método de fabricación. Las películas transpirables de acuerdo con la presente descripción comprenden una capa de película que comprende la composición polimérica que comprende igual o menos que 60% en peso de una resina de polietileno lineal de baja densidad que presenta cada una de las siguientes propiedades: (1) una fracción de CEF de 70 a 90ºC igual o más que 80% de las fracciones de CEF totales, (2) un índice de fusión, I₂, medido de acuerdo con ASTM D 1238 (2.16 kg, a 190ºC), en el rango igual o mayor a 2.0 g/ 10 min. e igual o menos que 5,0 g/10 min.; y (3) una relación de flujo en fusión, I₁₀/I₂, igual o menor a 6,7. The present description provides breathable films and their manufacturing method. Breathable films according to the present description comprise a film layer comprising the polymer composition comprising equal to or less than 60% by weight of a linear low density polyethylene resin having each of the following properties: (1) a fraction of CEF of 70 to 90 ° C equal to or more than 80% of the total CEF fractions, (2) a melt index, I₂, measured in accordance with ASTM D 1238 (2.16 kg, at 190 ° C), in the same range or greater than 2.0 g / 10 min. and equal to or less than 5.0 g / 10 min .; and (3) a melt flow ratio, I₁₀ / I₂, equal to or less than 6.7.

BREATHABLE FILM, METHOD FOR PRODUCING A BREATHABLE FILM AND ARTICLE OF MANUFACTURE

A presente divulgação fornece filmes respiráveis e método para produzir os mesmos. Os filmes respiráveis de acordo com a presente divulgação compreendem uma camada de filme compreendendo uma composição polimérica compreendendo teor menor ou igual a 60% em peso de uma resina de polietileno linear de baixa densidade que exibe cada uma das seguintes propriedades: (1) uma fração de CEF de 70 a 90°C maior ou igual a 80% do total das frações de CEF; (2) um índice de fusão, I2, medido de acordo com ASTM D 1238 (2,16 kg @ 190°C), na faixa de maior ou igual a 2,0 g/10 min e menor ou igual a 5,0 g/10 min; e (3) uma razão de fluxo de fusão, I10/I2, menor ou igual a 6,7. The present disclosure provides breathable films and method for producing same. Breathable films according to the present disclosure comprise a layer of film comprising a polymeric composition comprising less than or equal to 60% by weight of a linear low density polyethylene resin that exhibits each of the following properties: (1) a fraction CEF from 70 to 90°C greater than or equal to 80% of the total CEF fractions; (2) a melt index, I2, measured in accordance with ASTM D 1238 (2.16 kg @ 190°C), in the range of greater than or equal to 2.0 g/10 min and less than or equal to 5.0 g/10min; and (3) a melt flow ratio, I10/I2, less than or equal to 6.7.

breathable films and method to produce the same

a presente divulgação fornece filmes respiráveis e método para produzir os mesmos. os filmes respiráveis de acordo com a presente divulgação compreendem uma camada de filme compreendendo uma composição polimérica compreendendo teor menor ou igual a 60% em peso de uma resina de polietileno linear de baixa densidade que exibe cada uma das seguintes propriedades: (1) uma fração de cef de 70 a 90°c maior ou igual a 80% do total das frações de cef; (2) um índice de fusão, i2, medido de acordo com astm d 1238 (2,16 kg @ 190°c), na faixa de maior ou igual a 2,0 g/10 min e menor ou igual a 5,0 g/10 min; e (3) uma razão de fluxo de fusão, i10/i2, menor ou igual a 6,7. The present disclosure provides breathable films and method for producing them. breathable films according to the present disclosure comprise a film layer comprising a polymeric composition comprising less than or equal to 60% by weight of a linear low density polyethylene resin exhibiting each of the following properties: (1) a fraction cef 70 to 90 ° c or greater than or equal to 80% of the total cef fractions; (2) a melt index, i2, measured according to astm d 1238 (2.16 kg @ 190 ° c), in the range greater than or equal to 2.0 g / 10 min and less than or equal to 5.0 g / 10 min; and (3) a melt flow ratio, i10 / i2, less than or equal to 6.7.

A linear low density polyethylene composition suitable for cast film

The instant invention provides a linear low density polyethylene composition suitable for cast film, films made therefrom, and packaging devices comprising one or more such film layers. The linear low density polyethylene composition suitable for cast film according to the present invention comprises an ethylene/α-olefin interpolymer composition having a Comonomer Distribution Constant (CDC) in the range of from 40 to 200, for example from 40 to 150, a vinyl unsaturation of less than 0.12 vinyls per one thousand carbon atoms present in the backbone of the ethylene-based polymer composition; a zero shear viscosity ratio (ZSVR) in the range from 1.2 to 5, for example from 1.5 to 4; a density in the range of from 0.910 to 0.935, for example from 0.915 to 0.925, g/cm 3 ,a melt index (I 2 ) in a range of from 1 to 10, for example from 2 to 6 g/ 10 minutes, a molecular weight distribution (M w /M n ) in the range of from 2 to 3.5.

Artificial grass yarn

An artificial turf comprising a turf yarn prepared from an ethylene-based polymer composition comprising less than or equal to 100 percent by weight of the units derived from ethylene; and less than 30 percent by weight of units derived from one or more α-olefin comonomers; wherein said ethylene-based polymer composition is characterized by having a Comonomer Distribution Constant of equal to or greater than 40, a vinyl unsaturation of less than 100 vinyls per one million carbon atoms present in the backbone of the ethylene-based polymer composition; a zero shear viscosity ratio (ZSVR) equal to or greater than 1.75; a density in the range of 0.915 to 0.930 g/cm 3 , a melt index (I 2 ) in the range of from 0.8 to 5 g/10 minutes, a molecular weight distribution (M w /M n ) in the range of from 2 to 3.6, and a molecular weight distribution (M z /M w ) equal to or less than 3; and wherein the turf yarn exhibits one or more of the following properties (a) shrink of less than 4.8 %, and (b) curl of less than 0.5 is provided.

Cushioning network structures, and methods of manufacturing thereof

Stretch hoods made from uldpe-rich formulations

Polymeric, mono- or multilayer stretch hood packaging film with an overall density that does not exceed 0.920 g/cc comprises: A. At least one core layer comprising: 1. At least 50 wt% ULDPE with a density of 0.900 to 0.920 g/cc; and 2. Optionally at least one of: a. LDPE with a density of 0.915 to 0.925 g/cc, and b. EVA with a VA content of 4 to 20 wt%; and B. Optionally, two skin layers, each skin layer independently comprising: 1. At least 50 wt% ULDPE with a density of 0.900 to 0.920 g/cc; and 2. Optionally an LDPE with a density of 0.915 to 0.925 g/cc.

Cushioning mesh structures and methods of producing them.

Üç boyutlu bir oryantasyonda düzenlenen çok sayıda rastgele ilmek içeren bir yastıklama ağı yapısı olup, burada çok sayıda rastgele ilmek, 90.0 ° C ila 115.0 ° C aralığında en yüksek bir DSC sıcaklık erime zirvesine, 1,40 ila 2,10 aralığında sıfır kayma viskozite oranına (ZSVR); ASTM D1238'e göre 190 ° C'de ve 2.16 kg'da ölçüldüğünde 0.860 ila 0.925 g / cc arasında bir yoğunluğa; 1 ila 25 g / 10 dakikalık bir erime indeksine (12); 2.0 ila 4.5 aralığında bir moleküler ağırlık dağılımına (Mw / Mn) sahip olan bir etilen / alfa-olefin interpolimer bileşiminden oluşturulur. A cushioning network structure comprising a plurality of random loops arranged in a three-dimensional orientation, wherein a plurality of random loops has a highest DSC temperature melting peak in the range of 90.0 ° C to 115.0 ° C, a zero shear viscosity ratio in the range of 1.40 to 2.10. (ZSVR); A density between 0.860 and 0.925 g / cc when measured at 190 ° C and 2.16 kg according to ASTM D1238; A melt index (12) of 1 to 25 g / 10 minutes; It is formed from an ethylene / alpha-olefin interpolymer composition having a molecular weight distribution (Mw / Mn) in the range of 2.0 to 4.5.

Reversible, heat-set, elastic fibers, and method of making and articles made from same

A reversible, heat-set covered fiber is described, the covered fiber comprising: A. A core comprising an elastic fiber comprising a substantially crosslinked, temperature-stable, olefin polymer; and B. A cover comprising an inelastic fiber. The fiber is heat.set by a method comprising: (a) Stretching the covered fiber by applying a stretching force to the covered fiber; (b) Heating the stretched covered fiber of (a) to a temperature in excess of the crystalline melting point of the olefin polymer for a period of time sufficient to at least partially melt the olefin polymer; (c) Cooling the stretched and heated covered fiber of (b) to a temperature below the crystalline melting point of the olefin polymer for a period of time sufficient to solidify the polymer; and (d) Removing the stretching force from the covered fiber.

Process for producing ultrasonic seal, and film structures and flexible containers with same

The present disclosure is directed to processes for producing ultrasonic sealable film structures and flexible containers with ultrasonic seals. The film structure includes a first multilayer film and a second multilayer film. Each multilayer film includes a backing layer and a seal layer. Each seal layer includes an ultrasonic sealable olefin-based polymer (USOP) having the following properties: (a) a heat of melting, ΔΗm, less than 130 J/g, (b) a peak melting temperature, Tm, less than 125°C, (c) a storage modulus in shear (G') from 50 MPa to 500 MPa, and (d) a loss modulus in shear (G") greater than 10 MPa. The multilayer films are arranged such that the seal layer of the first multilayer film is in contact with the seal layer of the second multilayer film. The seal layers form an ultrasonic seal having a seal strength from 30 N/15 mm to 80 N/15 mm when ultrasonically sealed at 4 N/mm seal force.

A composition suitable for stretch hood, method of producing the same, and articles made therefrom

The instant invention provides a composition suitable for stretch hood, method of producing the same, and articles made therefrom. The multi-layer film according to the present invention has a thickness of at least 3 mils comprising at least one inner layer and two exterior layers, wherein the inner layer comprises at least 50 weight percent polyethylene copolymer having a melt index less than 2 grams/10 minutes, a density less than or equal to 0.910 g/cm 3 , a total heat of fusion less than 120 Joules/gram and a heat of fusion above 115°C of less than 5 Joules/gram, the total heat of fusion of the inner layer less than the heat of fusion of either of the two exterior layers, and wherein the multi-layer film has an elastic recovery of at least 40% when stretched to 100% elongation.

Fiber comprising polyethylene blend

Polyethylene blend composition suitable for blown film, method of producing the same, and films made therefrom

The instant invention provides a polyethylene blend composition suitable for blown film, method of producing the same, and films made therefrom. The polyethylene blend composition suitable for blown film according to the present invention comprises the melt blending product of: (a) less than or equal to 4 percent by weight of a low density polyethylene (LDPE) having a density in the range of from 0.915 to 0.935 g/cm 3 , and a melt index (I 2 ) in the range of from greater than 0.8 to less than or equal to 5 g/10 minutes, and a molecular weight distribution (M w /M n ) in the range of from 6 to 10; (b) 90 percent or greater by weight of a heterogeneous linear low density polyethylene (hLLDPE) having a density in the range of from 0.917 to 0.950 g/cm 3 , and a melt index (I 2 ) in the range of from 0.1 to less than or equal to 5 g/10 minutes; (c) optionally a hydrotalcite based neutralizing agent; (d) optionally one or more nucleating agents; and (e) optionally one or more antioxidants. When the polyethylene blend-composition is formed into a film via blown film process, the output rate is improved at least 6 percent relative to a similar linear low density polyethylene.

POLYOLEFINE BASED FILMS WITH IMPROVED WATER VAPOR TRANSMISSION RATES

La presente provee una película adecuada para aplicaciones que requieren altas tasas de transmisión de vapor de agua; la película comprende un polímero de poliolefina junto con 1% a 30% en peso de la película de un polímero hidrófilo y de 30% a 75% en peso de la película de un relleno que tiene una funcionalidad de superficie hidrofílica. This provides a suitable film for applications that require high rates of water vapor transmission; The film comprises a polyolefin polymer together with 1% to 30% by weight of the film of a hydrophilic polymer and 30% to 75% by weight of the film of a filler having a hydrophilic surface functionality.

Laminate structures for fuel containers

Fringed surface structures obtainable in a compression molding process

Disclosed are mono-layer or multi-layer films, sheets, or coatings wherein at least one layer comprises a fringed surface microstructure (1), a process for making these items and uses thereof. Further disclosed are articles of manufacture comprising such film, sheet, or coating.

FIBERS CONTAINING POLYETHYLENE MIXTURES

La presente descripción se refiere a una fibra que se compone de una mezcla polimérica que incluye (i) 95 por ciento en peso a 99 por ciento en peso de un polímero basado en etileno de alta densidad que tiene un Mʷ/Mₙ, de 2,0 a 3,0 y (ii) de 5 por ciento en peso a 1 por ciento en peso de un polímero basado en etileno de baja densidad que tiene un índice de fusión de 5 g/10 minutos a 15 g/10 minutos. La fibra tiene una densidad de 1 denier a 2 denier y un módulo de 3 por ciento secante de 8,5 g/denier hasta 20 g/denier. The present description refers to a fiber that is composed of a polymer blend that includes (i) 95 percent by weight to 99 percent by weight of a high density ethylene based polymer having a Mʷ / Mₙ of 2, 0 to 3.0 and (ii) from 5 percent by weight to 1 percent by weight of a low density ethylene based polymer having a melt index of 5 g / 10 minutes to 15 g / 10 minutes. The fiber has a density of 1 denier to 2 denier and a 3 percent secant modulus of 8.5 g / denier up to 20 g / denier.

mix composition of polyethylene, blown film, article and container device

COMPOSIÇÃO DE MISTURA DE POLIETILENO, FILME SOPRADO, ARTIGO E DISPOSITIVO RECIPIENTE A presente invenção provê uma composição de mistura de polietileno apropriada para filme soprado, método para sua produção e filmes fabricados com a mesma. A composição de mistura de polietileno apropriada para filme soprado, de acordo com a presente invenção, compreende o produto de mistura sob fusão de (a) uma quantidade igual ou menor que 4 por cento em peso de um polietileno de baixa densidade (LDPE) tendo uma densidade na faixa de 0,915 a 0,935 g/cm3 e um índice de fusão (12) na faixa de mais de 0,8 a um valor igual ou menor que 5g/10 minutos, e uma distribuição de peso molecular (Mw/Mn) na faixa de 6 a 10; (b) 90 por cento ou mais em peso de um polietileno linear heterogêneo de baixa densidade (hLLDPE) com uma densidade na faixa de 0,917 a 0,950 g/cm3, e um índice de fusão (12) na faixa de 0,1 a um valor igual ou menor que 5 g/10 minutos; (c) opcionalmente um agente neutralizante à base de hidrotalcita; (d) opcionalmente um ou mais agentes nucleantes; e (e) opcionalmente um ou mais antioxidantes. Quando dita composição de mistura de polietileno é formada em um filme via processo de filme (...). POLYETHYLENE MIXTURE COMPOSITION, BLOWED FILM, ARTICLE AND CONTAINER DEVICE The present invention provides a polyethylene blend composition suitable for blown film, method for its production and films manufactured with it. The polyethylene blending composition suitable for blown film according to the present invention comprises the melt blending product of (a) an amount equal to or less than 4 weight percent of a low density polyethylene (LDPE) having a density in the range of 0.915 to 0.935 g / cm3 and a melting index (12) in the range of more than 0.8 at a value equal to or less than 5g / 10 minutes, and a molecular weight distribution (Mw / Mn) in the range of 6 to 10; (b) 90 percent or more by weight of a heterogeneous low density linear polyethylene (hLLDPE) with a density in the ...

Stretch hoods made from uldpe-rich formulations

Polymeric, mono- or multilayer stretch hood packaging film with an overall density that does not exceed 0.920 g/cc comprises: A. At least one core layer comprising: 1. At least 50 wt% ULDPE with a density of 0.900 to 0.920 g/cc; and 2. Optionally at least one of: a. LDPE with a density of 0.915 to 0.925 g/cc, and b. EVA with a VA content of 4 to 20 wt%; and B. Optionally, two skin layers, each skin layer independently comprising: 1. At least 50 wt% ULDPE with a density of 0.900 to 0.920 g/cc; and 2. Optionally an LDPE with a density of 0.915 to 0.925 g/cc.

Polyethylene compositions with improved optical properties.

La presente invención se refiere a una composición de polietileno que comprende al menos 50% en peso de al menos un polímero de polietileno; y 0.001 a 2% en peso de agente de nucleación de bisamida usado para reducir la opacidad dentro de la composición de polietileno.

Elastic laminates, method of manufacture thereof and articles comprising the same

Disclosed herein is a multilayer laminate comprising a film comprising an ethylene-based elastomer; a first non-woven layer in contact with a first surface of the film; and a second non-woven layer in contact with a second surface of the film; wherein the second surface of the film is opposedly disposed to the first surface of the film; wherein at least one of the first non-woven layer or the second non-woven layer comprises a non-woven web; and wherein the non-woven web is formed from a bicomponent fiber having a first component comprising an polyethylene-based polymer and a second component comprising a polymer having a melting point that is higher than the polyethylene-based polymer, wherein at least a portion of a surface of the bicomponent fiber comprises the first component.

ITEMS THAT HAVE ELASTICITY AT ELEVATED TEMPERATURE OBTAINED FROM IRRADIATED AND RETICULATED ETHYLENE POLYMERS AND METHOD FOR OBTAINING IT.

Un artículo resistente al calor que comprende un interpolímero de etileno que ha sido irradiado y reticulado, en el que el interpolímero comprende etileno interpolimerizado con al menos un otro monómero, y caracterizado por tener: a) un interpolímero que tiene una densidad menor que 0, 89 g/cm3 o una cristalinidad DSC a 23°C, determinada usando calorimetría de barrido diferencial, menor que 26 por ciento en peso antes de ser conformado, irradiado y reticulado, y b) en forma de fibra hilada en estado fundido, un valor menor que 0, 75 para la expresión Abs [DeltaE/Eo] + Abs [DeltaT/To] en la que AE y AT se toman de una representación tensión-deformación, determinada usando un tensiómetro Instron a 500 mm/minuto de velocidad de cruceta y 10, 2 cm de dimensión de referencia, y a partir de cuatro replicaciones de cinco muestras de fibra; DeltaE se toma como la diferencia en el porcentaje de alargamiento entre el polímero irradiado y reticulado y el interpolímero sin irradiar y sin reticular a una tenacidad de 0, 4 gramos/denier; Eo se toma como el porcentaje de alargamiento del interpolímero sin irradiar y sin reticular a una tenacidad de 0, 4 gramos/denier; DeltaT se toma como la diferencia en tenacidad (en gramos/denier) entre el polímero irradiado y reticulado y el polímero sin irradiar y sin reticular a un porcentaje de alargamiento de 300 por ciento; y To se toma como la tenacidad (en gramos/denier) del polímero sin irradiar y sin reticular a un porcentaje de alargamiento de 300 por ciento. A heat resistant article comprising an ethylene interpolymer that has been irradiated and crosslinked, wherein the interpolymer comprises ethylene interpolymerized with at least one other monomer, and characterized by having: a) an interpolymer having a density less than 0, 89 g / cm3 or a DSC crystallinity at 23 ° C, determined using differential scanning calorimetry, less than 26 percent by weight before being formed, irradiated and crosslinked, and b) in the form of molten ...

Artificial grass yarn

The invention relates to artificial grass which includes a grass yarn made of an ethylene polymer composition in which no more than 100 wt % of the units are ethylene and less than 30 wt % of the units are one or more α-olefin comonomers; in which said ethylene polymer composition is characterised by having a comonomer distribution constant no lower than 40, a vinyl unsaturation of less than 100 vinyls per million atoms of carbon in the main chain of the ethylene polymer composition, a zero-shear-rate viscosity (ZSRV) no lower than 1.75, a density in the range of 0.915 to 0.930 g/cm3, a melt index (l2) in the range of 0.8 to 5 g / 10 minutes, a molecular weight distribution (Mp/Mn) in the range of 2 to 3.6, and a molecular weight distribution (Mz/Mp) no lower than 3; and in which the grass yarn has one or more of the following properties: (a) shrinkage of less than 4.8 % and (b) curling of less than 0.5.

BICOMPONENT FIBER AND CLOTH

FIBRA BICOMPONENTE, PANO, PANO NÃO-TECIDO E ARTIGO ABSORVENTE DE HIGIENE. A presente invenção provê fibras bicomponente e panos preparados com as mesmas. A fibra bicomponente, de acordo com a presente invenção, compreende: (a) de 5 a 95 por cento em peso de um primeiro componente compreendendo pelo menos um ou mais primeiros polímeros, com base no peso total da fibra bicomponente; (b) de 5 a 95 por cento em peso de um segundo componente compreendendo pelo menos uma composição de polímero à base de etileno, com base no peso total da fibra bicomponente, sendo que dita composição de polímero à base de etileno compreende: (i) uma quantidade igual ou menor que 100 por cento em peso das unidades derivadas de etileno; e (ii) uma quantidade menor que 30 por cento em peso de unidades derivadas de um ou mais comonômeros de (Alfa)-olefina; sendo que dita composição de polímero à base de etileno é caracterizada por ter uma Constante de Distribuição de Comonômero na faixa de mais que 100 a 400, uma insaturação vinílica inferior a 0,1 vinila por mil átomos de carbono presentes na cadeia principal da composição de polímero à base de etileno; uma relação de viscosidade a cisalhamento zero (ZSVR) na faixa de 1 a menos (...). BICOMPONENT FIBER, CLOTH, NON-WOVEN CLOTH AND ABSORBENT HYGIENE ITEM. The present invention provides bicomponent fibers and cloths prepared with them. The bicomponent fiber according to the present invention comprises: (a) from 5 to 95 weight percent of a first component comprising at least one or more first polymers, based on the total weight of the bicomponent fiber; (b) from 5 to 95 weight percent of a second component comprising at least one ethylene-based polymer composition, based on the total weight of the two-component fiber, said ethylene-based polymer composition comprising: (i ) an amount equal to or less than 100 weight percent of ethylene-derived units; and (ii) an amount less than 30 weight percent of units derived from one or more (Alpha) -olefin ...

Bi-component fiber and fabrics made therefrom.

La presente invención proporciona fibras bicomponentes y telas elaboradas a partir de las mismas. La fibra bicomponente de acuerdo con la presente invención comprende: (a) desde el 5 hasta el 95 por ciento por peso de un primer componente que comprende por lo menos uno o más primeros polímeros, con base en el peso total de la fibra bicomponente; (b) deI 5 al 95 por ciento por peso de un segundo componente que comprende por lo menos una composición polimérica basada en etileno, con base en el peso total de la fibra bicomponente, en donde dicha composición polimérica basada en etileno comprende: (i) menos que o igual al 100 por ciento por peso de las unidades derivadas de etileno; y (ii) menos del 30 por ciento por peso de unidades derivadas de uno o más comonómeros de a-olefina; en donde dicha composición polimérica basada en etileno se caracteriza por tener una Constante de distribución de comonómero dentro del rango de más de 100 hasta 400, una insaturación de vinilo de menos de 0.1 vinilos por mil átomos de carbono presentes en la columna de la composición polimérica basada en etileno; una índice de viscosidad de corte (ZSVR) en el rango de 1 a menos de 2; una densidad dentro del rango de 0.920 hasta 0.970 g/cm3, un índice de fusión (I2) en el rango de 10 a 40 g/10 minutos, una distribución de peso molecular (Mw/Mn) en el rango desde 1.8 hasta 3.0, y una distribución de peso molecular (Mz/Mw) en el rango de menos de 2; y en donde dicha fibra bicomponente tiene un denier por filamento dentro del rango desde 0.5 hasta 10 g/9000 m.

Spunbond nonwoven fabrics.

La presente descripción proporciona telas no tejidas y fibras sintéticas o aglutinantes preparadas a partir de un polímero a base de etileno que tiene una Constante de Distribución de Comonómero en el intervalo de desde más de 100 a 400, una insaturación de vinilo menor que 0.1 vinilos por cada mil átomos de carbono presentes en la cadena principal de la composición de polímero a base de etileno; una relación de viscosidad de cizallamiento cero (ZSVR - zero shear viscosity ratío) en el intervalo de 1 a menos de 2; una densidad en el intervalo de 0.930 a 0.970 g/cm3, un índice de fusión (I2) en el intervalo de desde 15 hasta 30 o desde 10 hasta 50 g/10 minutos, una distribución de peso molecular (Mw/Mn) en el intervalo de desde 2 hasta 3.5, y una distribución de peso molecular (Mz/Mw) en el intervalo de desde menos de 2.

Bi-component fiber and fabrics made therefrom.

La presente invención proporciona fibras bicomponentes y telas elaboradas a partir de las mismas. La fibra bicomponente de acuerdo con la presente invención comprende: (a) desde el 5 hasta el 95 por ciento por peso de un primer componente que comprende por lo menos uno o más primeros polímeros, con base en el peso total de la fibra bicomponente; (b) deI 5 al 95 por ciento por peso de un segundo componente que comprende por lo menos una composición polimérica basada en etileno, con base en el peso total de la fibra bicomponente, en donde dicha composición polimérica basada en etileno comprende: (i) menos que o igual al 100 por ciento por peso de las unidades derivadas de etileno; y (ii) menos del 30 por ciento por peso de unidades derivadas de uno o más comonómeros de a-olefina; en donde dicha composición polimérica basada en etileno se caracteriza por tener una Constante de distribución de comonómero dentro del rango de más de 100 hasta 400, una insaturación de vinilo de menos de 0.1 vinilos por mil átomos de carbono presentes en la columna de la composición polimérica basada en etileno; una índice de viscosidad de corte (ZSVR) en el rango de 1 a menos de 2; una densidad dentro del rango de 0.920 hasta 0.970 g/cm3, un índice de fusión (I2) en el rango de 10 a 40 g/10 minutos, una distribución de peso molecular (Mw/Mn) en el rango desde 1.8 hasta 3.0, y una distribución de peso molecular (Mz/Mw) en el rango de menos de 2; y en donde dicha fibra bicomponente tiene un denier por filamento dentro del rango desde 0.5 hasta 10 g/9000 m.

bicomponent fiber, cloth, nonwoven cloth and absorbent hygiene article

resumo “fibra bicomponente, pano, pano não-tecido e artigo absorvente de higiene” a presente invenção provê fibras bicomponente e panos preparados com as mesmas. a fibra bicomponente, de acordo com a presente invenção, compreende: (a) de 5 a 95 por cento em peso de um primeiro componente compreendendo pelo menos um ou mais primeiros polímeros, com base no peso total da fibra bicomponente; (b) de 5 a 95 por cento em peso de um segundo componente compreendendo pelo menos uma composição de polímero à base de etileno, com base no peso total da fibra bicomponente, sendo que dita composição de polímero à base de etileno compreende: (i) uma quantidade igual ou menor que 100 por cento em peso das unidades derivadas de etileno; e (ii) uma quantidade menor que 30 por cento em peso de unidades derivadas de um ou mais comonômeros de ?-olefina; sendo que dita composição de polímero à base de etileno é caracterizada por ter uma constante de distribuição de comonômero na faixa de mais que 100 a 400, uma insaturação vinílica inferior a 0,1 vinila por mil átomos de carbono presentes na cadeia principal da composição de polímero à base de etileno; uma relação de viscosidade a cisalhamento zero (zsvr) na faixa de 1 a menos que 2; uma densidade na faixa de 0,920 a 0,970 g/cm3, um índice de fusão (i2) na faixa de 10 a 40 g/10 minutos, uma distribuição de peso molecular (mw/mn) na faixa de 1,8 a 3,0, e uma distribuição de peso molecular (mz/mn) na faixa de menos que 2; e sendo que dita fibra bicomponente tem um denier por filamento na faixa de 0,5 a 10g/9000 m. 1/1 abstract "two-component fiber, cloth, non-woven cloth and absorbent hygiene article" The present invention provides two-component fibers and cloths prepared therefrom. the bicomponent fiber according to the present invention comprises: (a) from 5 to 95 weight percent of a first component comprising at least one or more first polymers, based on the total weight of the bicomponent fiber; (b) from 5 to 95 weight percent ...

nonwoven cloth, continuous spinning nonwoven cloth laminated structure, multilayer structure, ethylene and fiber based polymer composition or fabric

resumo “pano não-tecido, estrutura laminada de pano não-tecido de fiação contínua, estrutura multicamada, composição de polímero à base de etileno e fibra ou tecido” a presente invenção provê não-tecidos ou fibras descontínuas ou ligantes preparadas com um polímero à base de etileno tendo uma constante de distribuição de comonômero na faixa de mais que 100 a 400, uma insaturação vinílica menor que 0,1 vinila por mil átomos de carbono presentes na cadeia principal da composição de polímero à base de etileno; uma relação de viscosidade a cisalhamento zero (zsvr) na faixa de 1 a menos que 2; uma densidade na faixa de 0,930 a 0,970 g/cm3, um índice de fusão (i2) na faixa de 15 a 30 ou de 10 a 50g/10 minutos, uma distribuição de peso molecular (mw/mn) na faixa de 2 a 3,5, e uma distribuição de peso molecular (mz/mw) na faixa menor que 2. 1/1

Spunbond nonwoven fabrics

The instant invention provides nonwoven fabrics and staple or binder fibres prepared from an ethylene-based polymer having a Comonomer Distribution Constant in the range of from greater than from 100 to 400, a vinyl unsaturation of less than 0.1 vinyls per one thousand carbon atoms present in the backbone of the ethylene-based polymer composition; a zero shear viscosity ratio (ZSVR) in the range from 1 to less than 2; a density in the range of 0.930 to 0. 970 g/cm3, a melt index (12 ) in the range of from 15 to 30 or from 10 to 50 g/10 minutes, a molecular weight distribution (Mw /Mn ) in the range of from 2 to 3.5, and a molecular weight distribution (Mz /Mw ) in the range of from less than 2.

Bi-component fiber and fabrics made therefrom

The instant invention provides bi-component fibers and fabrics made therefrom. The bi-component fiber according to the present invention comprises: (a) from 5 to 95 percent by weight of a first component comprising at least one or more first polymers, based on the total weight of the bi-component fiber; (b) from 5 to 95 percent by weight of a second component comprising at least an ethylene-based polymer composition, based on the total weight of the bicomponent fiber, wherein said ethylene-based polymer composition comprises; (i) less than or equal to 100 percent by weight of the units derived from ethylene; and (ii) less than 30 percent by weight of units derived from one or more α-olefin comonomers; wherein said ethylene-based polymer composition is characterized by having a Comonomer Distribution Constant in the range of from greater than from 100 to 400, a vinyl unsaturation of less than 0.1 vinyls per one thousand carbon atoms present in the backbone of the ethylene-based polymer composition; a zero shear viscosity ratio (ZSVR) in the range from 1 to less than 2; a density in the range of 0.920 to 0.970 g/cm 3 , a melt index (I 2 ) in the range of from 10 to 40 g/10 minutes, a molecular weight distribution (M w /M n ) in the range of from 1.8 to 3.0, and a molecular weight distribution (M z /M w) in the range of from less than 2;; and wherein said bi-component fiber has a denier per filament in the range of from 0.5 to 10 g/9000 m.

Spunbond nonwoven fabrics.

La presente descripción proporciona telas no tejidas y fibras sintéticas o aglutinantes preparadas a partir de un polímero a base de etileno que tiene una Constante de Distribución de Comonómero en el intervalo de desde más de 100 a 400, una insaturación de vinilo menor que 0.1 vinilos por cada mil átomos de carbono presentes en la cadena principal de la composición de polímero a base de etileno; una relación de viscosidad de cizallamiento cero (ZSVR - zero shear viscosity ratío) en el intervalo de 1 a menos de 2; una densidad en el intervalo de 0.930 a 0.970 g/cm3, un índice de fusión (I2) en el intervalo de desde 15 hasta 30 o desde 10 hasta 50 g/10 minutos, una distribución de peso molecular (Mw/Mn) en el intervalo de desde 2 hasta 3.5, y una distribución de peso molecular (Mz/Mw) en el intervalo de desde menos de 2.

MULTIPLE LAYERS FILMS, ITEMS THAT INCLUDE THE SAME, MANUFACTURING METHODS OF MULTIPLE LAYERS

Se proporciona películas de múltiples capas, embalajes formados a partir de dichas películas, y métodos de fabricación de películas de múltiples capas. En un aspecto, una película de múltiples capas comprende una película de múltiples capas que comprende al menos 3 capas, teniendo cada capa superficies faciales opuestas y dispuestas en el orden A/B/C, en donde la Capa A comprende un polietileno de alta densidad que tiene un Mʷ,ᶜᶜ/Mₙ,ᶜᶜ de al menos 6.0, un Mᶻ,ₐᵇₛ de al menos 500.000 gramos/mol según lo medido por la GPC de triple detector, y una densidad de 0,957 - 0,970 g/cm³, donde el polietileno de alta densidad comprende al menos 90 por ciento en peso de la Capa A; la Capa B comprende una capa de permeación de gas, en la que una superficie facial superior de la Capa B está en contacto adherente con una superficie facial inferior de la Capa A; y la Capa C comprende un polietileno de alta densidad que tiene un Mʷ,ᶜᶜ/Mₙ,ᶜᶜ de al menos 6,0, un Mᶻ,ₐᵇₛ de al menos 500.000 gramos/mol según lo medido por la GPC de triple detector y una densidad de 0,957 - 0,970 g/cm³, en donde el polietileno de alta densidad comprende al menos un 90 por ciento en peso de la Capa C y en donde una superficie facial superior de la Capa C está en contacto adherente con una superficie facial inferior de la Capa B, en donde la película está orientada en la dirección de la máquina y en donde la película exhibe una velocidad de transmisión normalizada de dióxido de carbono de al menos 3000 cm³ mil/100 pulgada²/día cuando se mide de acuerdo con ASTM F-2476 a 23ºC, 0% de humedad relativa y 1 atm, y en donde la película exhibe una relación entre velocidad de transmisión de dióxido de carbono y una velocidad de transmisión de oxígeno de al menos 4,0, cuando la velocidad de transmisión de oxígeno se mide de acuerdo con ASTM D3985 a 23ºC, 0% de humedad relativa y 1 atm. Multilayer films, packaging formed from said films, and methods of manufacturing multilayer films are provided. In one aspect, a ...

Process to produce enhanced melt strength ethylene/alpha-olefin copolymers and articles thereof

An ethylene/a-olefm copolymer comprising units derived from ethylene; and units derived from at least one α-olefm; wherein the ethylene/a-olefm copolymer has a density in the range of from 0.90 to 0.94 g/cc; a melt index (I2) in the range of from 0.05 to 50 dg/min; an Mw/Mn of from 3 to 5; and from 300 to 500 vinyl unsaturations per 1,000,000 carbon atoms in the ethylene/a-olefm copolymer is provided. Also provided is a process for producing an ethylene/ α-olefm copolymer comprising: (1) polymerizing ethylene and one or more α-olefms in a polymerization reactor; (2) thereby producing an enhanced melt strength ethylene/a-olefm copolymer having from 300 to 500 vinyl unsaturation units per 1,000,000 carbon atoms, a density in the range of from 0.90 to 0.94 g/cc; a melt index (I2) in the range of from 0.05 to 50 dg/min; and a Mw/Mn of from 3 to 5.

Articles having elevated temperature elasticity made from irradiated and crosslinked ethylene polymers and method for making the same

The present invention relates to heat resistance elastic articles comprising a cured, irradiated, or crosslinked or ethylene polymer and a method for making the same. In particular, the invention relates to a shaped article (for example, film or fiber) characterized by improved elasticity at elevated temperatures and comprising a substantially cured, irradiated, or crosslinked homogeneously branched ethylene polymer. The improved elastic article of the present invention is particularly suitable for use in applications where good elasticity must be maintained at elevated temperatures such as, for example, personal hygiene items and disposable infection-control garments at body temperatures of about 100 °F (38 °C).

heat resistant elastic article, Method for producing a elastic article and personal care product.