Molded fabric and methods of manufacture

A novel molded fabric is made by bringing a first patterned group of numerous discrete disjoint elements positioned on a first side of a contact boundary extending throughout the thickness of the fabric being molded, together with a second patterned group of numerous discrete disjoint elements, over-lapping the first group of discrete disjoint elements, on the opposite side of the contact boundary, and joining the elements together at their tip portions. Various techniques are disclosed for maintaining separation of overlapping cross-over portions of the thread elements crossing each other during joining the terminal portions together, so that they simulate woven cloth. First and second rolls can carry the elements in molten form within cavities in the roller surfaces or patterns of solid elements within first and second matrices, can be joined together at the nip of the rolls by heat or chemical means to produce substantial savings in fabric manufacture.

Product having a net structure, a process for realizing the product and use of the product for geotechnical applications

A reinforcing element for geo-technical applications may include a monolithic net structure made of a plastic material, having a plurality of first elements distanced from one another and having an elongate conformation in a respective prevalent development direction, a plurality of second elements distanced from one another and also having an elongate conformation, which develop substantially in a transversal direction to the first elements. The second elements are stretched along a development thereof, and the second elements are configured such that the net structure exhibits a substantially arched profile and forms a longitudinal seating having an axis of extension substantially parallel to the first elements. A process of manufacturing the reinforcing element and an artificial or partially artificial structure obtained by consolidating the terrain using the reinforcing element are also described.

THREE DIMENSIONAL NETTED STRUCTURE

A three-dimensional netted structure having an upper surface, a lower surface, two side surfaces a left end surface, and a right end surface, including at least a plurality of filaments helically and randomly entangled and thermally bonded together, wherein the filaments are formed out of a thermoplastic resin by extrusion molding followed by cooling with a liquid; and the netted structure is four-surface molded, the upper surface, the lower surface and the two side surfaces being molded. An apparatus and a method for manufacturing the three-dimensional netted structure. 1. A method of manufacturing a three-dimensional netted structure , the method comprising:extruding molten filaments of a thermoplastic resin downward from a die via a mouthpiece of the die having a plurality of holes, whereby the filaments drop under the force of gravity in between chutes and a pair of drawing-down units, said drawing-down units being submerged or partly-submerged in a liquid, wherein a distance between upper parts of said chutes is wider than a width of an assembly of said extruded filaments, and a distance between lower parts of the chutes and a distance between said drawing-down units are smaller than the width of the assembly of said extruded filaments;flowing the filaments along a liquid layer formed on said chutes to form loops in the filaments, contacting adjacent filaments with each other, entangling the filaments with each other, and dropping the filaments in-between said drawing-down units;drawing down the assembly of extruded filaments at a speed lower than the filament dropping speed by said drawing-down units, wherein four surfaces of the assembly of said filaments are contacting said chutes and a pair of said drawing-down units before or after said drawing-down units are submerged; andcooling said resultant filaments with a liquid.2. A method of manufacturing a three-dimensional netted structure , the method comprising:a) extruding filaments of a thermoplastic resin ...

Braid welding

A tubular support for use with a hollow fiber membrane is made with an apparatus that comprises a forming machine and an ultrasonic welding machine. The apparatus may also include a coating nozzle for depositing a dope on the support. In operation, filaments are formed into a tubular structure in which the filaments cross each other in radial and circumferential directions, for example a braid. The filaments are ultrasonically welded together at intersections between them. The support is combined with a polymeric membrane wall to form a hollow fiber membrane.

Mesh body and producing method therefor

The present invention ensures strength of a mesh body and reduces gloss of the mesh body. A nonwoven fabric ( 8 ) is formed by laminating crosswise a split web ( 1 ) and a slit web ( 6 ), that are made of a thermoplastic resin, so that their orientation axes cross each other. Furthermore, the nonwoven fabric ( 8 ) has surface-bonded portions ( 8 a ) formed by bonding contact portions of the split web ( 1 ) and the slit web ( 6 ), and circular concave portions ( 8 b ) formed on a surface of the nonwoven fabric ( 8 ) by an embossing processing.

METHODS OF MAKING FILMS COMPRISING AN ARRAY OF OPENINGS

Polymeric layer having first and second, generally opposed major surfaces, comprising an array of openings extending between the first and second major surfaces. The polymeric layers are useful, for example, as components in personal care garments such as diapers and feminine hygiene products. They can also be useful for filtering (including liquid filtering) and acoustic applications. 1. (canceled)2. The method of claim 16 , wherein the total open area for each of the first and second major surfaces is in a range from 0.1 percent to not greater than 50 percent of the total area of the respective major surface.3. The method of claim 16 , wherein the total open area for each of the first and second major surfaces is not greater than 1 percent of the total area of the respective major surface.4. The method of claim 16 , wherein the openings have at least two pointed ends.5. The method of having in a range from 50 claim 16 ,000 to 6 claim 16 ,000 claim 16 ,000 openings/m.6. The method of claim 16 , wherein the openings have a length and a width claim 16 , and a ratio of lengths to widths in a range from 1:1 to 1.9:1.7. The method of claim 16 , wherein the layer has a thickness up to 2 m.8. The method of claim 16 , wherein at least some of the openings have a first side on the first major surface comprising a first polymeric material and a second claim 16 , opposed side on the first major surface comprising a second claim 16 , different polymeric material.9. (canceled)10. The method of claim 18 , wherein at least some of the openings have at least two pointed ends.11. The method of having in a range from 50 claim 18 ,000 to 6 claim 18 ,000 claim 18 ,000 openings/m.12. The method of claim 18 , wherein the openings have a length and a width claim 18 , and a ratio of lengths to widths in a range from 1:1 to 1.9:1.13. The method of claim 18 , wherein the layer has a thickness up to 2 mm.14. The method of claim 18 , wherein the polymeric layer is a sheet having an average ...

Polymeric netting of strands and first and second ribbons and methods of making the same

A polymeric netting includes polymeric strands and first and second polymeric ribbons. The first and second ribbons each independently have a height-to-width aspect ratio of at least three to one and a major surface that is intermittently bonded to a polymeric strand, with first and second edges symmetrically disposed on opposite sides of a center line bisecting the major surface. The netting has first and second opposing major surfaces transverse to the major surfaces of the first and second ribbons. The first major surface of the netting includes the first edges of the first ribbons, and the second major surface includes the second edges of the second ribbons. The first ribbons do not extend to the second major surface, and the second ribbons do not extend to the first major surface. Articles including the netting, an extrusion die, and a method useful for making the netting are also disclosed.

ISO-GRID COMPOSITE COMPONENT

An iso-grid composite component according to an exemplary aspect of the present disclosure includes a spacer transverse to a uni-tape ply bundle, the spacer interrupted by the uni-tape ply bundle. 1. An iso-grid composite component for a gas turbine engine comprising:a uni-tape ply bundle including uni-tape plies and a first spacer ply;a spacer including a second, different spacer ply, said spacer transverse to said uni-tape ply bundle, and said spacer interrupted by said uni-tape ply bundle;an interstitial ply layer adjacent said uni-tape ply bundle and said spacer; andwherein said uni-tape ply bundle and said spacer define a rib pattern, said uni-tape ply bundle at least partially defines a first rib of said rib pattern, said spacer at least partially defines a second rib of said rib pattern that is transverse to said first rib, and said interstitial ply spanning between a first sidewall of said first rib and a second sidewall of said second rib.2. The iso-grid composite component as recited in claim 1 , wherein said uni-tape ply bundle is a buildup of said uni-tape plies and said first spacer ply such that said first spacer ply separates said uni-tape plies.3. The iso-grid composite component as recited in claim 2 , wherein each of said uni-tape plies includes a first material claim 2 , said first spacer ply includes a second material that is different from the first material in fiber construction.4. The iso-grid composite component as recited in claim 3 , wherein each of said uni-tape plies defines a first height claim 3 , and said first spacer ply defines a second height different from said first height.5. The iso-grid composite component as recited in claim 4 , wherein said second spacer ply includes said second material.6. The iso-grid composite component as recited in claim 5 , wherein said second spacer ply defines a third height different from said first height.7. The iso-grid composite component as recited in claim 6 , wherein said interstitial ply layer ...

Method for manufacturing fishing net

Provided is a method for manufacturing a fishing net formed from a plastic net that can be handled by winding or folding although the net has plastic rigidity. The fishing net is manufactured by (1) a step of preparing a multifilament yarn formed by bundling a plurality of core-sheath type composite filaments, in each of which a core component is made of polyethylene terephthalate and a sheath component is made of polyolefin, (2) a step of preparing a yarn thread obtained by paralleling a plurality of the multifilament yarns, (3) a step of twisting or braiding four yarn threads 11, 12, 13, 14 to obtain a net constructed with strands 1 and intersections 2 , (4) a step of heat-treating the net under without pressure to melt the sheath component of the yarn threads 11, 12, 13, 14 constituting the strands 1 and the intersections 2 , followed by solidifying, thus obtaining a plastic net, and (5) a step of forming the fishing net using the plastic net.

REINFORCING ARTICLE

A reinforcing article includes a porous substrate layer separating a plurality of parallel first continuous fiber elements spaced apart from each other and extending along a first direction from a plurality of parallel second continuous fiber elements spaced apart from each other and extending along a different direction. Each first and second continuous fiber elements include a plurality of parallel and co-extending continuous fibers embedded in a thermoplastic resin. 1. A reinforcing article comprising:a plurality of parallel first continuous fiber elements spaced apart from each other and extending along a first direction and fixed to the porous substrate, each first continuous fiber element comprising a plurality of parallel and co-extending continuous fibers embedded in a thermoplastic resin;a plurality of parallel second continuous fiber elements spaced apart from each other and extending along a second direction different than the first direction, each second continuous fiber element comprising a plurality of parallel and co-extending continuous fibers embedded in a thermoplastic resin, and the plurality of parallel second continuous fiber elements are fixed to the porous substrate layer; anda porous substrate layer separating the plurality of parallel first continuous fiber elements from the plurality of parallel second continuous fiber elements.2. The article according to claim 1 , wherein the porous substrate is an open lattice substrate having lattice openings of at least 1 mm and a substrate weight in a range from 60 grams/meterto 700 grams/meter.3. The article according to claim 1 , wherein the porous substrate is a non-woven substrate having a substrate weight in a range from 30 grams/meterto 100 grams/meter.4. The article according to claim 1 , wherein the first continuous fiber elements comprise at least 1000 parallel and co-extending continuous fibers embedded within the thermoplastic resin.5. The reinforcing article according to claim 1 , wherein ...

THREE DIMENSIONAL NETTED STRUCTURE

A three-dimensional netted structure having an upper surface, a lower surface, two side surfaces a left end surface, and a right end surface, including at least a plurality of filaments helically and randomly entangled and thermally bonded together, wherein the filaments are formed out of a thermoplastic resin by extrusion molding followed by cooling with a liquid; and the netted structure is four-surface molded, the upper surface, the lower surface and the two side surfaces being molded. An apparatus and a method for manufacturing the three-dimensional netted structure. 2. The apparatus of claim 1 , wherein each of said pair of endless conveyors comprises exactly two endless chains.3. The apparatus of claim 1 , wherein said mouthpiece has a region not provided with holes.5. A method of manufacturing a three-dimensional netted structure by using the apparatus of claim 1 , the method comprising:a) extruding filaments of a thermoplastic resin downward from said die via said mouthpiece of said die, whereby said filaments drop in between said pair of endless conveyors under a force of gravity at a dropping speed and form an assembly of filaments, said pair of endless conveyors being submerged or partly-submerged in a liquid in a tank, wherein a distance between said pair of endless conveyors is smaller than a width of said assembly of filaments;b) drawing down said assembly of filaments at a speed lower than the dropping speed by said pair of endless conveyors, and contacting and compressing at least longitudinal surfaces of said assembly of filaments by said pair of endless conveyors, whereby said longitudinal surfaces are formed to be flat, and a density of regions of the assembly of filaments which extend a predetermined distance from said longitudinal surfaces into an inner portion of the assembly of filaments is higher than a density of said inner portion; andc) cooling said assembly of filaments in the liquid in the tank.6. A method of manufacturing a three- ...

INJECTION MOLDED SCREENING APPARATUSES AND METHODS

Screening members, screening assemblies, methods for fabricating screening members and assemblies and methods for screening materials are provided for vibratory screening machines that incorporate the use of injection molded materials. Use of injection molded screen elements provide, inter alia, for: varying screening surface configurations; fast and relatively simple screen assembly fabrication; and a combination of outstanding screen assembly mechanical and electrical properties, including toughness, wear and chemical resistance. Embodiments of the present invention use a thermoplastic injection molded material. 1. A screening surface , comprising:multiple independent screen elements that are each single thermoplastic injection-molded pieces having openings sizes in a range from approximately 40 microns to approximately 150 microns,wherein the screen elements are configured to be secured to a support structure to thereby form a continuous screening surface.2. The screening surface of claim 1 , wherein each screen element has a screening surface that has an open screening area of approximately 5% to approximately 35% of a total area of the screening surface.3. The screening surface of claim 1 , wherein the screen elements are at least one of permanently secured and replaceably secured to the support structure.4. The screening surface of claim 1 , wherein the screen elements comprise:screen openings that are elongated slots having substantially uniform length L along a first direction and substantially uniform width W along a second direction; andsurface elements that are elongated members separating the screen openings, the surface elements having a thickness T along the second direction that is in a range from approximately 70 microns to approximately 400 microns.5. The screening surface of claim 4 , wherein:the surface element thickness T is approximately 0.014 inch, 0.07 inch, 0.005 inch, or 0.003 inch, andthe open screening area is in a respective range from ...

O-RING FILTER SEAL, ASSEMBLY AND METHOD

An O-ring filter seal includes an annular sealing portion having a first thickness, a circular mesh filter, and an inner portion formed integrally with the annular sealing portion and disposed radially inwardly relative to the annular sealing portion. The inner portion is molded onto a peripheral edge of the circular mesh filter and has a second thickness that is less than the first thickness. 1. An O-ring filter seal , comprising:an annular sealing portion having a first thickness;a circular mesh filter; andan inner portion formed integrally with the annular sealing portion and disposed radially inwardly relative to the annular sealing portion, the inner portion overmolded onto a peripheral edge of the circular mesh filter and having a second thickness that is less than the first thickness.2. The O-ring filter seal of wherein the annular sealing portion has an O-ring profile.3. The O-ring filter seal of wherein the inner portion has an O-ring profile.4. The O-ring filter seal of wherein the inner portion is connected to the sealing portion and radially spaced apart therefrom by a bridge portion claim 1 , the bridge portion having a third thickness that is less than the second thickness.5. The O-ring filter seal of wherein an upper side of the sealing portion is elevated relative to an upper side of the inner portion.6. The O-ring filter seal of wherein a lower side of the inner portion is elevated relative to a lower side of the sealing portion.7. The O-ring filter seal of wherein the sealing and inner portions are formed of rubber.8. The O-ring filter seal of wherein the mesh filter is a ferrous wire9. A filter assembly claim 1 , comprising:a first bearing surface;a second bearing surface spaced apart and opposite from the first bearing surface; andan O-ring seal interposed between the first and second bearing surfaces, the O-ring seal having an annular sealing portion in contact with the first and second bearing surfaces and an inner portion formed integrally ...

METHODS OF FORMING NEAR-NET FIBER REINFORCED THERMOPLASTIC COMPOSITE COMPONENTS

A method is provided for forming a near-net thermoplastic composite component includes co-spraying a mixture comprising a thermoplastic polymer material and a chopped reinforcing material deposited onto at least one region associated with a tool having a first temperature and defining a near-net component shape. The mixture and adjacent tool is heated to a second temperature while the mixture is on the tool. The first temperature is below the solidification temperature of the thermoplastic polymer material and the second temperature is above the solidification temperature. Then, the mixture is exposed to a negative pressure to promote removal of gases from the mixture and put under compressive force to densify the mixture. The thermoplastic polymer material melts and flows. The tool is cooled to the first temperature and removing the mixture to form the near-net thermoplastic composite component having randomly oriented chopped reinforcement material distributed within a thermoplastic polymer matrix. 1. A method of forming a near-net thermoplastic composite component comprising:co-spraying a mixture comprising a thermoplastic polymer material and a chopped reinforcing material deposited onto at least one region associated with a tool having a first temperature and defining a near-net component shape;heating the mixture to a second temperature while the mixture is on the tool, wherein the first temperature is below the solidification temperature of the thermoplastic polymer material and the second temperature is above a solidification temperature of the thermoplastic polymer material, so that the thermoplastic polymer material flows;exposing the mixture on the tool to a negative pressure to promote removal of gases from the mixture;applying compressive force to the mixture; andcooling the tool to the first temperature and removing the mixture to form the near-net thermoplastic composite component having randomly oriented chopped reinforcement material distributed ...

FILTRATION MEDIUM INCLUDING POLYMERIC NETTING OF RIBBONS AND STRANDS

A filtration medium including a polymeric netting of polymeric ribbons and polymeric strands. Each of the polymeric ribbons and strands has a length and width, with the length being the longest dimension and the width being the shortest dimension. The polymeric ribbons have a height-to-width aspect ratio of at least three to one or five to one a major surface that is intermittently bonded to a polymeric strand, and a height typically greater than the height of the one polymeric strand. A filter including the filtration medium and a method useful for making the polymeric netting are also disclosed 1. A filtration medium comprising a polymeric netting , wherein the polymeric netting comprises polymeric ribbons and polymeric strands , each of the polymeric ribbons and strands having a length and width , wherein the length is the longest dimension and the width is the shortest dimension , wherein the polymeric ribbons have a height-to-width aspect ratio of at least three to one , a major surface that is intermittently bonded to a polymeric strand at spaced-apart bonding sites , and a height that is greater than a height of the polymeric strand , and wherein at least one of the following limitations is met:the polymeric netting is electrostatically charged;the polymeric netting further comprises sorbent particles attached to at least some of the polymeric ribbons or polymeric strands; orthe polymeric netting is pleated.2. The filtration medium of claim 1 , wherein at least one of the following limitations is met:the height-to-width aspect ratio of the polymeric ribbons is at least five to one;the height of the polymeric ribbon is at least two times greater than the height of the polymeric strand; orthe major surface of each of the polymeric ribbons is intermittently bonded to only one polymeric strand at spaced-apart bonding sites.3. A filtration medium comprising a polymeric netting claim 1 , wherein the polymeric netting comprises polymeric ribbons and polymeric ...

Polymeric netting of ribbons and strands and methods of making the same

A polymeric netting including polymeric ribbons and polymeric strands. Each of the polymeric ribbons and strands has a length and width, with the length being the longest dimension and the width being the shortest dimension. The polymeric ribbons have a height-to-width aspect ratio of at least five to one, a major surface that is intermittently bonded to only one polymeric strand, and a height greater than the height of the one polymeric strand. An extrusion die and method useful for making the polymeric netting are also disclosed.

Support panel

Provided is an injection molded panel having a top side and a bottom side. The panel is configured with at least an elastic portion, the elastic portion including a plurality of undulating deformable strands intersecting with one another at rigid connecting locations, the rigid connecting locations alternatingly extending at opposite sides of the panel at alternating top peaks and bottom peaks, the peaks defining together the respective top side and the bottom side.

METHOD AND APPARATUSES FOR SCREENING

Embodiments of the present disclosure include a screen basket apparatus includes a substantially vertical cylindrical frame and a synthetic screening surface secured to the frame. The synthetic screening surface may be configured to separate carbon or resin from a slurry of a carbon-in-leach, carbon-in-pulp, resin-in-leach, or resin-in-pulp material as fluid flows from outside to inside the screen basket apparatus such that carbon or resin is retained on an external surface of the synthetic screening surface. The cylindrical frame may be a grid frame and the synthetic screening surface may include a plurality of replaceable screen assemblies attached to the grid frame. The grid frame may include a plurality of openings and each of the plurality of openings is configured to receive a respective one of the plurality of replaceable screen assemblies. The synthetic screening surface may include injected molded thermoplastics, thermoset polyurethanes, and/or other polymeric materials. 1. A screen basket apparatus , comprising:a grid frame having a plurality of openings, the grid frame including a plurality of transversal members and a plurality of longitudinal members that define the plurality of openings; anda screen assembly affixed to the grid frame that covers an opening in the grid frame, wherein the screen assembly comprises a synthetic screening surface formed of a synthetic material, and wherein screening openings are formed in the synthetic screening surface, the screening openings have a size that ranges between approximately 35 microns and approximately 4000 microns.2. The screen basket apparatus of claim 1 , wherein the screening openings have a size that ranges between approximately 100 microns and approximately 1300 microns.3. The screen basket apparatus of claim 1 , wherein the screening openings have a size that ranges between 400 microns and 1300 microns.4. The screen basket apparatus of claim 1 , wherein the synthetic screening surface of the screen ...

Method and apparatuses for screening

Embodiments of the present disclosure include a screen basket apparatus includes a substantially vertical cylindrical frame and a synthetic screening surface secured to the frame. The synthetic screening surface may be configured to separate carbon or resin from a slurry of a carbon-in-leach, carbon-in-pulp, resin-in-leach, or resin-in-pulp material as fluid flows from outside to inside the screen basket apparatus such that carbon or resin is retained on an external surface of the synthetic screening surface. The cylindrical frame may be a grid frame and the synthetic screening surface may include a plurality of replaceable screen assemblies attached to the grid frame. The grid frame may include a plurality of openings and each of the plurality of openings is configured to receive a respective one of the plurality of replaceable screen assemblies. The synthetic screening surface may include injected molded thermoplastics, thermoset polyurethanes, and/or other polymeric materials.

FILMS COMPRISING AN ARRAY OF OPENINGS AND METHODS OF MAKING THE SAME

Polymeric layer having first and second, generally opposed major surfaces, comprising an array of openings extending between the first and second major surfaces. The polymeric layers are useful, for example, as components in personal care garments such as diapers and feminine hygiene products. They can also be useful for filtering (including liquid filtering) and acoustic applications. 1. A polymeric layer having first and second , generally opposed , parallel major surfaces , comprising an array of openings extending between the first and second major surfaces , wherein the openings each have a series of areas through the openings from the first and second major surfaces ranging from minimum to maximum areas , wherein there is a total area and a total open area for each of the first and second major surfaces , wherein the total open area for each of the first and second major surfaces is not greater than 50 percent of the total area of the respective major surface , and wherein for at least a majority of the openings , the minimum area is not at either major surface.2. The polymeric layer of claim 1 , wherein the total open area for each of the first and second major surfaces is in a range from 0.1 percent to not greater than 50 percent of the total area of the respective major surface.3. The polymeric layer of claim 1 , wherein the total open area for each of the first and second major surfaces is not greater than 1 percent of the total area of the respective major surface.4. The polymeric layer of claim 1 , wherein the openings have at least two pointed ends.5. The polymeric layer of having in a range from 50 claim 1 ,000 to 6 claim 1 ,000 claim 1 ,000 openings/m.6. The polymeric layer of claim 1 , wherein the openings have a length and a width claim 1 , and a ratio of lengths to widths in a range from 1:1 to 1.9:1.7. The polymeric layer of claim 1 , wherein the layer has a thickness up to 2 mm.8. The polymeric layer of claim 1 , wherein at least some of the ...

METHOD AND APPARATUS FOR SCREENING

Methods and apparatuses for screening are provided. Embodiments include a screen basket apparatus for screening material, comprising a grid frame having a plurality of openings arranged in a lattice and a plurality of screening cartridge assemblies affixed to the grid frame to cover the respective openings of the grid frame. The screening cartridge assembly includes a case and a screen assembly fitted into the case, and may be affixed to a set of transversal member of the grid frame. The case may be formed of a single injection molded piece integrally formed by injection molding one of a polyurethane or a thermoset polymer. The screening elements together form a generally continuous screening surface across the exterior of the grid frame, which reduces blinding and is resistant to wear and tear. 1. A screen basket apparatus , comprising:a grid frame having a plurality of openings, the grid frame including a plurality of transversal members and a plurality of longitudinal members that define the plurality of openings;a first screening cartridge assembly including a first case and a first screen assembly secured within the first case; anda second screening cartridge assembly including a second case and a second screen assembly secured within the second case,wherein the first screen assembly and the second screen assembly each include a screen element, the screen elements each having a plurality of screening openings including a length L that has a magnitude in a range from about 300 μm to about 4000 μm, and a width W that has a magnitude in a range of about 35 μm to about 4000 μm,wherein the first screening cartridge assembly is secured to at least one of (a) a first transversal member of the plurality of traversal members and (b) a first longitudinal member of the plurality of longitudinal members and covers a first opening of the plurality of openings of the grid frame; andwherein the second screening cartridge assembly is secured to at least one of (a) at second ...

Reflective articles of wear

Reflective articles of wear are disclosed. The reflective articles of wear can include an elastomeric material and reflective components coupled to the elastomeric material. The elastomeric material forms a plurality of apertures.

ENGINEERING REVERSIBLE ELASTICITY IN DUCTILE OR BRITTLE THIN FILMS AND PRODUCTS RESULTING FROM SAID ENGINEERING

The present disclosure relates to how to engineer reversible elasticity in thin films and/or layers and/or substrates, using a repeated Y-shaped motif, which is cut out through the film and/or layer and/or substrate. As an example, using a 75 μm thick polyimide (PI) foil, macroscopic dog-bone shaped structures with a range of geometrical parameters of the Y shape have been prepared according to an embodiment of the present disclosure. The tensile strain response of the film at its point of fracture was then recorded. The structures were also confirmed using finite element modeling. Upon stretching, the PI ligaments locally deflect out of plane, allowing the foil to macroscopically stretch. 1. A method for engineering elasticity in a layer of intrinsically non-elastic material , said method comprising:providing the layer of intrinsically non-elastic material; andforming a plurality of through cuts in said layer, each through cut extending through a thickness of said layer;wherein each of said through cuts has a projection on at least one main surface of said layer and the projection is shaped so as to comprise at least three branches extending from a common portion.2. The method as claimed in claim 1 , wherein forming said plurality of through cuts includes forming at least one through cut having claim 1 , on said at least one main surface of said layer claim 1 , at least two equal length branches of the at least three branches of the at least one through cut.34.-. (canceled)5. The method as claimed in claim 1 , wherein forming said plurality of through cuts includes forming at least one through cut having claim 1 , on said at least one main surface of said layer claim 1 , at least two of the branches of the at least one through cut of equal width.67.-. (canceled)8. The method as claimed in claim 1 , wherein said layer extends along a length direction (X) and a width direction (Y) substantially perpendicular to said length direction (X) claim 1 , and wherein forming ...

Multi-axial grid or mesh structures with high aspect ratio ribs

A multi-axial geogrid possesses a series of interconnected strands or ribs that are arranged along at least two different axes within the plane of the structure. The strands or ribs have an aspect ratio, defined as the ratio of the thickness to width, of greater than 1.0, thickness being the direction normal to the plane of the structure. The geogrid can be manufactured by modifying the process parameters in order to create high aspect ratio ribs, using any of the various known methods for producing geogrids. A reinforced civil engineering structure, and method therefor, is formed by embedding in soil one or more horizontal layers of geogrid having high aspect ratio ribs. The reinforced structure shows improved rutting performance when subjected to vehicular traffic.

INJECTION MOLDED SCREENING APPARATUSES AND METHODS

Screening members, screening assemblies, methods for fabricating screening members and assemblies and methods for screening materials are provided for vibratory screening machines that incorporate the use of injection molded materials. Use of injection molded screen elements provide, inter alia, for: varying screening surface configurations; fast and relatively simple screen assembly fabrication; and a combination of outstanding screen assembly mechanical and electrical properties, including toughness, wear and chemical resistance. Embodiments of the present invention use a thermoplastic injection molded material. 1. A screen element configured to separate particulate solids based on particulate size , the screen element comprising:a single thermoplastic injection-molded piece having screen openings having a smallest dimension in a range from 40 μm to approximately 200 μm configured to thereby block particulates having sizes larger than the smallest dimension,wherein the screen element has an open screening area in a range from approximately 10% to 16%.2. The screen element of claim 1 , further comprising surface elements separating the screen openings claim 1 , the surface elements having a dimension that is in a range from approximately 70 μm to approximately 400 μm.3. The screen element of claim 1 , wherein the screen openings are elongated slots having a substantially uniform length L along a first direction and a substantially uniform width W along a second direction claim 1 , wherein the width W of the screen openings is the smallest dimension having a value in the range from approximately 40 μm to approximately 200 μm and the length L of the screen openings is in a range from approximately 0.7 mm to approximately 2 mm claim 1 , andwherein the screen element further comprises surface elements separating the screen openings, the surface elements having a thickness T along the second direction that is in a range from approximately 70 μm to approximately 400 μm.4 ...

A method of treating a net made from ultra-high-molecular-weight polyethylene

A method of treating a net ( 2 ) formed from interconnecting strands ( 4 a, 4 b ) of ultra-high-molecular-weight polyethylene (UHMWPE), the net ( 2 ) being formed with knotless intersections ( 6 ), comprising the steps of: a) heating the net ( 2 ) to a temperature of from 80° to 135° C.; b) applying tension to the net ( 2 ); c) reducing the temperature to below 80° C.; and d) removing tension from the net ( 2 ).

Molded and drawn screen

A plastic barrier screen that is molded and drawn; the screen is formed from a process that uses the speed of injection molding to form a part that can be mechanically oriented in a second operation that is equally fast. The plastic barrier screen is first formed from injection molding a part with multiple square or hexagonal holes ½ to ⅙ opening size in a uniform pattern, including longitudinal dividers between such holes of 2 to 6 times the final desired screen barrier cross sectional area of the longitudinals respectively. The molded part is then stretched along the longitudinal elements of the mold to molecularly orient at elevated temperature to produce a larger planar dimension of 2 to 6 times the original plastic screen with high strength molecularly oriented monofilament longitudinal elements. 1. A plastic barrier screen formed from injection molding a part with multiple holes ½ to ⅙ of the final desired opening size in a uniform pattern , including longitudinal elements between such holes; heating and stretching the longitudinal elements of the molded part to molecularly orient monofilament longitudinal elements to produce a larger planar dimension barrier screen of about 2 to 6 times the original plastic screen.2. The plastic barrier screen according to wherein said injection molding a part is a plastic polymer that will molecularly orient by mechanical means with strength of over 3 claim 1 ,500 PSI as molded.3. The plastic barrier screen according to wherein said molding includes essentially round cross sections of the cylindrical elements.4. The plastic barrier screen according to wherein the injection molded part has outer edge features that allow easy connection to the part used to post stretch the cylindrical sections.5. The plastic barrier screen according to wherein post stretching includes devices to fix the stretched parts to a preset desired length preventing additional annealing or relaxation individually.6. The plastic barrier screen according ...

THREE-DIMENSIONAL POLYMERIC STRAND NETTING, DIES, AND METHODS OF MAKING THE SAME

Method and extrusion die () for producing a three-dimensional polymeric strand netting, wherein a plurality of the polymeric strands () are periodically joined together in a regular pattern at bond regions throughout the array, wherein a majority of the polymeric strands () are periodically bonded to at least two (three, four, five, six, or more) adjacent polymeric strands, and wherein no polymeric strands are continuously bonded to a polymeric strand. Three-dimensional polymeric strand netting described herein have a variety of uses, including wound care, tapes, filtration, absorbent articles, pest control articles, geotextile applications, water/vapor management in clothing, reinforcement for nonwoven articles, self bulking articles, floor coverings, grip supports, athletic articles, and pattern coated adhesives. 1. A three-dimensional polymeric strand netting , wherein a plurality of the polymeric strands are periodically joined together in a regular pattern at bond regions throughout the netting , wherein at least some of the polymeric strands are periodically bonded to at least three adjacent polymeric strands , and wherein no polymeric strands are continuously bonded to another polymeric strand.2. The three-dimensional polymeric strand netting of claim 1 , wherein the three-dimensional network of polymeric strands has a thickness up to 750 micrometers.3. The three-dimensional polymeric strand netting of having a basis weight in a range from 5 g/mto 400 g/mor a range from 0.5 g/mto 40 g/m.4. The three-dimensional polymeric strand netting of further comprising third strands disposed between at least some of the alternating first and second strands.5. The three-dimensional polymeric strand netting of claim 1 , wherein at least a plurality of the polymeric strands have a core of a first polymeric material and a sheath of a second claim 1 , different polymeric material.6. The three-dimensional polymeric strand netting of claim 1 , wherein at least some of strands ...

NETTING, ARRAYS, AND DIES, AND METHODS OF MAKING THE SAME

Nettings and arrays comprising polymeric strands, including dies () and methods to make the same. Nettings and arrays of polymeric strands () described herein have a variety of uses, including wound care, tapes, filtration, absorbent articles, pest control articles, geotextile applications, water/vapor management in clothing, reinforcement for non-woven articles, self bulking articles, floor coverings, grip supports, athletic articles, and pattern-coated adhesives. 1. A netting comprising an array of polymeric strands periodically joined together at bond regions throughout the array , but do not substantially cross over each other , wherein the netting has a thickness up to 750 micrometers.2. An article comprising two nettings of with a ribbon region disposed there between.3. An article comprising the netting of disposed between two ribbon regions.4. A method of making the netting of claim 1 , the method comprising one of Method I or Method II:Method Iproviding an extrusion die comprising a plurality of shims positioned adjacent to one another, the shims together defining a cavity, the extrusion die having a plurality of first dispensing orifices in fluid communication with the cavity and a plurality of second dispensing orifices in fluid communication with the cavity, such that the first and second dispensing orifices are alternated; anddispensing first polymeric strands from the first dispensing orifices at a first strand speed while simultaneously dispensing second polymeric strands from the second dispensing orifices at a second strand speed, wherein the first strand speed is at least 2 times the second strand speed to provide the netting; orMethod IIproviding an extrusion die comprising a plurality of shims positioned adjacent to one another, the shims together defining a first cavity and a second cavity, the extrusion die having a plurality of first dispensing orifices in fluid communication with the first cavity and having a plurality of second dispensing ...

Pad Comprising an Extruded Mesh and Method of Making Thereof

A structure for use in a compressible resilient pad. The structure contains both axially elastomeric strands and relatively inelastic strands co-extruded in various patterns. The structure has a high degree of both compressibility under an applied normal load and excellent recovery (resiliency or spring back) upon removal of that load. 1. A method for forming a compressible resilient , the method comprising: extruding a first layer of parallel strands in a longitudinal direction (LD);', "co-extruding a second layer of parallel strands on one side of the first layer, the second layer's strands running in a transverse direction (TD) and comprising elastomeric strands; and", 'co-extruding a third layer of parallel strands on an opposite side of the second layer as the first layer and running in the same direction as those of the first layer,, 'forming a bicomponent extruded mesh comprising the steps ofwherein the first, second, and third layers are co-extruded at substantially the same time such that the strands in the first layer are positioned or aligned within the space between strands in the third layer.2. The method of claim 1 , wherein strands in the first claim 1 , second claim 1 , and third layers are extruded polymeric elongate members which cross and intersect during extrusion to form a net-like structure.3. The method of claim 1 , wherein the number of strands in the third layer is less than the number of strands in the first layer or vice versa.4. The method of claim 1 , wherein the strands of the second layer are orthogonal to those of the first and third layer or are at an angle of less than 90 degrees of the first and third layer.5. The method of claim 1 , further comprising the steps of:extruding a fourth layer of parallel strands in the same direction as the second layer, and comprising elastomeric strands; andextruding a fifth layer of parallel strands in the same direction as the first layer,wherein the strands of the fifth layer are aligned in the ...

INJECTION MOLDED SCREENING APPARATUSES AND METHODS

Screening members, screening assemblies, methods for fabricating screening members and assemblies and methods for screening materials are provided for vibratory screening machines that incorporate the use of injection molded materials. Use of injection molded screen elements provide, inter alia, for: varying screening surface configurations; fast and relatively simple screen assembly fabrication; and a combination of outstanding screen assembly mechanical and electrical properties, including toughness, wear and chemical resistance. Embodiments of the present invention use a thermoplastic injection molded material. 1. A method of manufacturing a screening assembly , the method comprising:generating a plurality of subgrids;assembling the subgrids into a subgrid framework;injection molding a plurality of screen elements;securing the screen elements to the plurality of subgrids such that the plurality of screen elements forms a continuous screening surface; andconfiguring the plurality of subgrids and screen elements to form an independent monolithic screening assembly that is a single structure configured to be secured to a vibratory screening machine.2. The method of claim 1 , wherein generating a plurality of subgrids further comprises:generating a plurality of center subgrids each having a rectangular shape having four edges; generating a plurality of end subgrids each having a rectangular shape having four edges;attaching each center subgrid to neighboring center or end subgrids such that each of the four edges is attached to a neighboring subgrid, andattaching each end subgrid to neighboring end subgrids along two opposing parallel edges; andattaching each end subgrid to a center subgrid along a third edge that is perpendicular to the two opposing parallel edges.3. The method of claim 1 , further comprising configuring the subgrid framework to withstand compressive forces in a range from approximately 0 lb to approximately 3 claim 1 ,000 lb applied to edges of the ...

INJECTION MOLDED SCREENING APPARATUSES AND METHODS

Screening members, screening assemblies, methods for fabricating screening members and assemblies and methods for screening materials are provided for vibratory screening machines that incorporate the use of injection molded materials. Use of injection molded screen elements provide, inter alia, for: varying screening surface configurations; fast and relatively simple screen assembly fabrication; and a combination of outstanding screen assembly mechanical and electrical properties, including toughness, wear and chemical resistance. Embodiments of the present invention use a thermoplastic injection molded material. 1. A screen assembly , comprising:a plurality of independently formed thermoplastic injection molded screen elements forming a screening surface; anda support structure having support structure openings,wherein the screen elements are secured to the support structure over a plurality of support structure openings, andwherein the screen elements include openings having sizes in a range from approximately 40 microns to 150 microns.2. The screen assembly of claim 1 , wherein the support structure further comprises:a first plurality of rails that are parallel to one another; anda second plurality of rails that are parallel to one another.3. The screen assembly of claim 2 , wherein the support structure openings are formed as spaces between neighboring rails in the first and second pluralities of rails.4. The screen assembly of claim 2 , wherein the screen elements are secured to rails of the first and second pluralities of rails.5. The screen assembly of claim 2 , wherein first and second pluralities of rails form a rectangular grid such that support structure openings have rectangular shapes.6. The screen assembly of claim 5 , wherein the screen elements each have a rectangular shape and are secured to the support structure to thereby span one or more support structure openings.7. The screen assembly of claim 6 , wherein the screen elements are configured to ...

INJECTION MOLDED SCREENING APPARATUSES AND METHODS

Screening members, screening assemblies, methods for fabricating screening members and assemblies and methods for screening materials are provided for vibratory screening machines that incorporate the use of injection molded materials. Use of injection molded screen elements provide, inter alia, for: varying screening surface configurations; fast and relatively simple screen assembly fabrication; and a combination of outstanding screen assembly mechanical and electrical properties, including toughness, wear and chemical resistance. Embodiments of the present invention use a thermoplastic injection molded material. 1. A screen assembly , comprising:a thermoplastic injection molded screen element including openings having sizes in a range from approximately 40 microns to 150 microns; anda subgrid,wherein the screen element and the subgrid include dissimilar materials and the screen element is secured to the subgrid via laser welding.2. The screen assembly of claim 1 , wherein:the screen element includes a first adhesion arrangement;the subgrid includes a second adhesion arrangement,wherein the first and second adhesion arrangements are configured to mate with one another, the first adhesion arrangement is configured as a location aperture, and the second adhesion arrangement is configured as a location member, such that the thermoplastic screen element is aligned on the subgrid when the first adhesion arrangement is engaged with the second adhesion arrangement.3. The screen assembly of claim 2 , wherein the first adhesion arrangement includes a plurality of cavity pockets on a bottom surface of the screen element and the second adhesion arrangement includes a plurality of fusion bars a top surface of the subgrid.4. The screen assembly of claim 3 , wherein the cavity pockets have a shape that is approximately oval shaped claim 3 , circular claim 3 , square claim 3 , triangular claim 3 , rectangular claim 3 , or shaped as a multi-sided polygon.5. The screen assembly of ...

Corrugated And Apertured Web

A web having a micro-textured film and a nonwoven is disclosed herein. The micro-textured film has a first surface and an opposing second surface and a plurality of cones extending from the first surface. A plurality of apertures extends through the web, wherein the plurality of apertures have sidewalls formed from the micro-textured film and the nonwoven. The sidewalls extend from the first surface, and wherein the caliper of the micro-textured film in the sidewall is less than the caliper of the microtextured film of the first surface. 1. A web comprising:a micro-textured film comprising a first surface and an opposing second surface, wherein the micro-textured film comprises a plurality of cones extending from the first surface;a nonwoven comprising a plurality of fibers;wherein the web comprises a plurality of apertures extending therethrough, the plurality of apertures having sidewalls formed from the micro-textured film and the nonwoven, wherein the sidewalls extend from the first surface, and wherein the caliper of the micro-textured film in the sidewall is less than the caliper of the microtextured film of the first surface.2. The web of claim 1 , wherein the apertures have a center-to-center spacing of between 2 mm to 10 mm.3. The web of claim 1 , wherein the apertures are distributed on the web such that there are greater than 25 apertures per square inch.4. The web of claim 1 , wherein the apertures are distributed on the web such that there are greater than 100 apertures per square inch.5. The web of claim 1 , wherein the apertures are distributed on the web such that there are between 100 and 250 apertures per square inch.6. The web of claim 1 , further comprising a total open area of from 5 percent to 25 percent.7. The web of claim 1 , further comprising a total open area of from 9 percent to 21 percent.8. The web of claim 1 , further comprising a total open area of from 14 percent to 20 percent.9. The web of claim 1 , wherein the each of the plurality ...

INJECTION MOLDED SCREENING APPARATUSES AND METHODS

Screening members, screening assemblies, methods for fabricating screening members and assemblies and methods for screening materials are provided for vibratory screening machines that incorporate the use of injection molded materials. Use of injection molded screen elements provide, inter alia, for: varying screening surface configurations; fast and relatively simple screen assembly fabrication; and a combination of outstanding screen assembly mechanical and electrical properties, including toughness, wear and chemical resistance. Embodiments of the present invention use a thermoplastic injection molded material. 1. A screening assembly , comprising:a subgrid framework including a plurality of subgrids; anda plurality of screen elements secured to the plurality of subgrids such that the plurality of screen elements form a continuous screening surface,wherein the plurality of subgrids and screen elements is configured to form an independent monolithic screening assembly that is a single structure configured to be secured to a vibratory screening machine.2. The screening assembly of claim 1 , wherein the subgrid framework further comprises:a plurality of center subgrids; anda plurality of end subgrids,wherein each center subgrid has a rectangular shape having four edges, and each center subgrid is attached to neighboring center or end subgrids such that each of the four edges is attached to a neighboring subgrid, andwherein each end subgrid has a rectangular shape and is attached to neighboring end subgrids along two opposing parallel edges and is attached to a center subgrid along a third edge that is perpendicular to the two opposing parallel edges.3. The screening assembly of claim 1 , wherein the subgrid framework is configured to withstand compressive forces in a range from approximately 0 lb to approximately 3 claim 1 ,000 lb applied to edges of the screening assembly.4. The screening assembly of claim 1 , wherein the continuous screening surface of the ...

INJECTION MOLDED SCREENING APPARATUSES AND METHODS

Screening members, screening assemblies, methods for fabricating screening members and assemblies and methods for screening materials are provided for vibratory screening machines that incorporate the use of injection molded materials. Use of injection molded screen elements provide, inter alia, for: varying screening surface configurations; fast and relatively simple screen assembly fabrication; and a combination of outstanding screen assembly mechanical and electrical properties, including toughness, wear and chemical resistance. Embodiments of the present invention use a thermoplastic injection molded material. 1. A method of manufacturing a screen assembly , the method comprising:injection molding a plurality of independently formed thermoplastic screen elements each including openings having sizes in a range from approximately 40 microns to 150 microns;forming a support structure having support structure openings;securing the screen elements over a plurality of support structure openings to thereby form a screening surface.2. The method of claim 1 , wherein forming the support structure further comprises configuring the support structure to have:a first plurality of rails that are parallel to one another; anda second plurality of rails that are parallel to one another.3. The method of claim 2 , wherein the support structure openings are formed as spaces between neighboring rails in the first and second pluralities of rails.4. The method of claim 2 , wherein securing the screen elements over the plurality of support structure openings further comprises securing the screen elements to rails of the first and second pluralities of rails.5. The method of claim 2 , wherein first and second pluralities of rails form a rectangular grid such that support structure openings have rectangular shapes.6. The method of claim 5 , further comprising configuring the screen elements to each have a rectangular shape claim 5 , andsecuring the screen elements over a plurality of ...

INJECTION MOLDED SCREENING APPARATUSES AND METHODS

Screening members, screening assemblies, methods for fabricating screening members and assemblies and methods for screening materials are provided for vibratory screening machines that incorporate the use of injection molded materials. Use of injection molded screen elements provide, inter alia, for: varying screening surface configurations; fast and relatively simple screen assembly fabrication; and a combination of outstanding screen assembly mechanical and electrical properties, including toughness, wear and chemical resistance. Embodiments of the present invention use a thermoplastic injection molded material. 1. A screen assembly , comprising: screening openings that are elongated slots having substantially uniform width W and substantially uniform length L; and', 'surface elements separating the screening openings, the surface elements having a thickness T that is approximately 70 μm≤T≤400 μm., 'a plurality of independently formed thermoplastic screen elements forming a screening surface, the screen elements having2. The screen assembly of claim 1 , wherein each screen element is a single thermoplastic injection molded piece.3. The screen assembly of claim 1 , wherein the screen assembly has an open screening area of approximately 5% to approximately 35% of a total area of the screening surface.4. The screen assembly of claim 1 , wherein the length L of the screening openings is approximately 0.7 mm≤L≤2 mm.5. The screen assembly of claim 1 , wherein the width W of the screening openings is approximately 40 μm≤W≤200 μm.6. The screen assembly of claim 5 , wherein:the surface element thickness is T≈356 μm;the length of the screening openings is L≈1.9 mm; andthe open screening area varies from approximately 6% to approximately 24% as the width W of the screening openings varies from approximately 45 μm to approximately 180 μm.7. The screen assembly of claim 5 , wherein:the surface element thickness is T≈178 μm;the length of the screening openings is L≈1.2 mm; ...

INJECTION MOLDED SCREENING APPARATUSES AND METHODS

Screening members, screening assemblies, methods for fabricating screening members and assemblies and methods for screening materials are provided for vibratory screening machines that incorporate the use of injection molded materials. Use of injection molded screen elements provide, inter alia, for: varying screening surface configurations; fast and relatively simple screen assembly fabrication; and a combination of outstanding screen assembly mechanical and electrical properties, including toughness, wear and chemical resistance. Embodiments of the present invention use a thermoplastic injection molded material. 1. A screen assembly , comprising:a thermoplastic screen element having screening openings that are elongated slots having substantially uniform width W and substantially uniform length L, and surface elements separating the screening openings, the surface elements having a thickness T that is approximately 70 μm≤T≤400 μm; anda support structure having support structure openings,wherein the screen element spans at least one support structure opening and is secured to the support structure via laser welding.2. The screen assembly of claim 1 , wherein the length L of the screening openings is approximately 0.7 mm≤L≤2 mm claim 1 , and the width W of the screening openings is approximately 40 μm≤W≤200 μm.3. The screen assembly of claim 1 , wherein the screen assembly has a screening surface having an open screening area that is approximately 5% to approximately 35% of a total area of the screening surface.4. The screen assembly of claim 1 , wherein:the thermoplastic screen element includes substantially parallel end portions and substantially parallel side edge portions that are substantially perpendicular to the end portions,the thermoplastic screen element further includes a first screen element support member and a second screen element support member that is perpendicular to the first screen element support member, the first screen element support member ...

INJECTION MOLDED SCREENING APPARATUSES AND METHODS

Screening members, screening assemblies, methods for fabricating screening members and assemblies and methods for screening materials are provided for vibratory screening machines that incorporate the use of injection molded materials. Use of injection molded screen elements provide, inter alia, for: varying screening surface configurations; fast and relatively simple screen assembly fabrication; and a combination of outstanding screen assembly mechanical and electrical properties, including toughness, wear and chemical resistance. Embodiments of the present invention use a thermoplastic injection molded material. 1. A screen assembly , comprising:a screen element having a first adhesion arrangement;a subgrid unit having a second adhesion arrangement;wherein the first adhesion arrangement and the second adhesion arrangement are different materials;wherein at least one of the first adhesion arrangement and the second adhesion arrangement is excitable such that the screen element and the subgrid may be secured together; andwherein the screen element is a single thermoplastic injection molded piece.2. The screen assembly of claim 1 , wherein the first adhesion arrangement is a plurality of cavity pockets on a bottom surface of the screen element and the second adhesion arrangement is a plurality of fusion bars a top surface of the subgrid.3. The screen assembly of claim 2 , wherein the screen element is micro molded and has screening openings between approximately 40 microns and approximately 1000 microns.4. The screen assembly of claim 2 , wherein the cavity pockets are elongated pockets.5. The screen assembly of claim 2 , wherein the fusion bars have a height slightly larger than a depth of the cavity pockets.6. The screen assembly of claim 5 , wherein the depth of the cavity pockets is approximately 0.05 inches and the height of the fusion bars is approximately 0.056 inches.7. The screen assembly of claim 5 , wherein the fusion bars have a width slightly smaller ...

Micro-truss materials having in-plane material property variations

A micro-truss sheet having material properties varying across the sheet. The sheet may include a plurality of truss members intersecting at nodes. The diameter of the truss members at one point in the sheet may differ from the diameter of the truss members at another point in the sheet. In one embodiment the spacing between adjacent truss members may be different in one part of the sheet from the spacing between adjacent truss members in another part of the sheet.

MULTI-AXIAL GRID OR MESH STRUCTURES WITH HIGH ASPECT RATIO RIBS

A multi-axial geogrid possesses a series of interconnected strands or ribs that are arranged along at least two different axes within the plane of the structure. The strands or ribs have an aspect ratio, defined as the ratio of the thickness to width, of greater than 1.0, thickness being the direction normal to the plane of the structure. The geogrid can be manufactured by modifying the process parameters in order to create high aspect ratio ribs, using any of the various known methods for producing geogrids. A reinforced civil engineering structure, and method therefor, is formed by embedding in soil one or more horizontal layers of geogrid having high aspect ratio ribs. The reinforced structure shows improved rutting performance when subjected to vehicular traffic. 1. A multi-axial integral geogrid comprising a generally uniform array of substantially straight highly oriented transverse strands or ribs interconnected by partially oriented junctions extending transversely across said grid or mesh structure in spaced apart rows and a plurality of substantially straight highly oriented connecting strands or ribs interconnecting said partially oriented junctions in adjacent rows to form apertures or openings between adjacent highly oriented strands or ribs and junctions , said strands or ribs having an aspect ratio at their longitudinal midpoint which is greater than 1.0.2. The integral geogrid of claim 1 , wherein the integral geogrid has triangular apertures or openings claim 1 , and said aspect ratio is between 1.0 and about 2.5.3. The integral geogrid of claim 1 , wherein the integral geogrid has rectangular apertures or openings claim 1 , and said aspect ratio is in the range between 1.0 and about 4.0.4. The integral geogrid of claim 3 , wherein the integral geogrid has an aperture stability modulus greater than about 0.3 Nm/degree at 20 kg-cm of applied torque.5. The integral geogrid of claim 1 , wherein said integral geogrid is embedded in a particulate ...

INJECTION MOLDED SCREENING APPARATUSES AND METHODS

Screening members, screening assemblies, methods for fabricating screening members and assemblies and methods for screening materials are provided for vibratory screening machines that incorporate the use of injection molded materials. Use of injection molded screen elements provide, inter alia, for: varying screening surface configurations; fast and relatively simple screen assembly fabrication; and a combination of outstanding screen assembly mechanical and electrical properties, including toughness, wear and chemical resistance. Embodiments of the present invention use a thermoplastic injection molded material. 1. A method of fabricating a screen assembly , comprising:laser welding a screen element of a first material to a subgrid of a second material;attaching multiple subgrids together to form the screen assembly;wherein the first material and the second material are different materials; andwherein the first material and the second material are fused together at laser weld locations.2. The method for fabricating a screen assembly of claim 1 , wherein the screen assembly has a first adhesion arrangement on a bottom surface of the screen element and the subgrid has a second adhesion arrangement on a top surface of the subgrid.3. The method for fabricating a screen assembly of claim 2 , wherein the first adhesion arrangement is a plurality of pocket cavities and the second adhesion arrangement is a plurality of fusion bars.4. The method for fabricating a screen assembly of claim 3 , where the plurality of pocket cavities are configured to mate with the plurality of fusion bars.5. The method for fabricating a screen assembly of claim 1 , further comprising: locating the screen element upon the subgrid via location apertures in the screen element and location extensions on a top surface of the subgrid.6. The method for fabricating a screen assembly of claim 4 , further comprising: passing a laser through the screen element such that it contacts the plurality of ...

INJECTION MOLDED SCREENING APPARATUSES AND METHODS

Screening members, screening assemblies, methods for fabricating screening members and assemblies and methods for screening materials are provided for vibratory screening machines that incorporate the use of injection molded materials. Use of injection molded screen elements provide, inter alia, for: varying screening surface configurations; fast and relatively simple screen assembly fabrication; and a combination of outstanding screen assembly mechanical and electrical properties, including toughness, wear and chemical resistance. Embodiments of the present invention use a thermoplastic injection molded material. 1. A screening surface , comprising:multiple independent screen elements that each have a synthetic surface having openings with sizes in a range from approximately 35 microns to approximately 4,000 microns,wherein the screen elements are configured to be secured to a support structure to thereby form a continuous screening surface, andwherein the synthetic surface has an open screening area of approximately 5% to approximately 35% of a total area of the screening surface.2. The screening surface of claim 1 , wherein each screen element is a single injection molded piece integrally formed by injection molding of a thermoplastic material.3. The screening surface of claim 1 , wherein the screen elements are at least one of permanently secured and replaceably secured to the support structure.4. The screening surface of claim 1 , wherein the screen elements comprise:screen openings that are elongated slots having substantially uniform length L along a first direction and substantially uniform width W along a second direction; andsurface elements that are elongated members separating the screen openings, the surface elements having a thickness T along the second direction that is in a range from approximately 70 microns to approximately 400 microns.5. The screening surface of claim 4 , wherein:the surface element thickness T is approximately 0.014 inch, 0.07 ...

WOVEN OR EXTRUDED NET, USE OF THE NET FOR MAKING A BAG AND BAG FOR CONTAINING PRODUCTS

A woven or extruded net for forming bags, with threads or bands which are linked or firmly bonded together to make up meshes. The meshes of the net are not homogeneous and the net has at least one main portion in which the threads or bands are linked or bonded to form a first mesh structure, suitable for the net to fulfill its role; and at least one smaller portion wherein the threads or bands form a second mesh structure, more readily breakable than the first mesh structure, intended to make it easier to open the bag which is to be made with the net. 1. A woven or extruded net for forming bags , with threads or bands which are linked or firmly bonded together to make up meshes , wherein the meshes of the net are not homogeneous , the net at least comprising one main portion wherein the threads or bands are linked or bonded to form a first mesh structure , suitable for the net to fulfill its role; and at least one smaller portion wherein the threads or bands form a second mesh structure , more readily breakable than the first mesh structure , indeed intended to make it easier to open the bag which is to be made with the net.2. The net according to claim 1 , wherein at least one of the threads or bands forming the second mesh structure has a lower tensile strength than that of the threads or bands forming the first mesh structure.3. The net according to claim 2 , wherein at least one of the threads or bands forming the second mesh structure is made of a different material than that of the threads or bands forming the first mesh structure.4. The net according to claim 1 , wherein the threads or bands forming the second mesh structure are made of the same material as those forming the first mesh structure but at least one of the threads forming the second mesh structure is thinner or has a smaller cross-section.5. The net according to claim 1 , wherein the linking or bonding between the threads or bands of the meshes of the second mesh structure is different than the ...

INJECTION MOLDED SCREENING APPARATUSES AND METHODS

Screening members, screening assemblies, methods for fabricating screening members and assemblies and methods for screening materials are provided for vibratory screening machines that incorporate the use of injection molded materials. Use of injection molded screen elements provide, inter alia, for: varying screening surface configurations; fast and relatively simple screen assembly fabrication; and a combination of outstanding screen assembly mechanical and electrical properties, including toughness, wear and chemical resistance. Embodiments of the present invention use a thermoplastic injection molded material. 1. A screening assembly , comprising:a subgrid framework including a plurality of subgrids; anda plurality of screen elements secured to the plurality of subgrids such that the plurality of screen elements form a continuous screening surface,wherein the plurality of subgrids and screen elements is configured to form an independent monolithic screening assembly that is a single structure configured to be secured to a vibratory screening machine.2. The screening assembly of claim 1 , wherein the subgrid framework further comprises:a plurality of center subgrids; anda plurality of end subgrids,wherein each center subgrid has a rectangular shape having four edges, and each center subgrid is attached to neighboring center or end subgrids such that each of the four edges is attached to a neighboring subgrid, andwherein each end subgrid has a rectangular shape and is attached to neighboring end subgrids along two opposing parallel edges and is attached to a center subgrid along a third edge that is perpendicular to the two opposing parallel edges.3. The screening assembly of claim 1 , wherein the subgrid framework is configured to withstand compressive forces in a range from approximately 0 lb to approximately 3 claim 1 ,000 lb applied to edges of the screening assembly.4. The screening assembly of claim 1 , wherein the continuous screening surface of the ...

FRAMELESS CONSTRUCTION USING SINGLE AND DOUBLE PLENUM PANELS

A method of constructing a building comprising the steps of attaching a first panel to a second panel. The first panel is one of a single plenum panel and a multi-plenum panel and the second panel is one of a single plenum panel and a multi-plenum panel. 1. A ventilated panel fastener comprising one of a toothed screw , a double-head screw , and a coupling block.2. The ventilated panel fastener of wherein the fastener is a toothed screw.3. The ventilated panel fastener of wherein the toothed screw further comprises a enlarged flat head with cutting teeth fixedly attached to and extending downward from the head parallel to and in a same direction as a shank.4. The ventilated panel fastener of wherein the cutting teeth attach to an outer perimeter of the flat head.5. The ventilated panel fastener of wherein the cutting teeth are between 2 and 16 in number6. The ventilated panel fastener of wherein the cutting teeth are between 2 to 4 in number7. The ventilated panel fastener of wherein the cutting teeth extend a length equal to a thickness of sheet of ventilated panel to be fastened.8. The ventilated panel fastener of wherein the cutting teeth extend a length equal to a thickness of two sheets of a ventilated panel to be fastened9. The ventilated panel fastener of wherein the fastener is double head screw.1014. The ventilated panel fastener of wherein the double-head screw has a larger diameter top head at a terminal end of the double head screw and has an smaller diameter intermediate head spaced at a distance from the top head11. The ventilated panel fastener of wherein the intermediate head having a twisted bit base.12. The ventilated panel fastener of wherein the fastener is a coupling block.13. The ventilated panel fastener of wherein the coupling block has a has a raised center guide to aid in centering the coupling block claim 12 , with respect to length claim 12 , so equal lengths of the coupling block is in adjacent panels claim 12 , when securing the ...

INJECTION MOLDED SCREENING APPARATUSES AND METHODS

Screening members, screening assemblies, methods for fabricating screening members and assemblies and methods for screening materials are provided for vibratory screening machines that incorporate the use of injection molded materials. Use of injection molded screen elements provide, inter alia, for: varying screening surface configurations; fast and relatively simple screen assembly fabrication; and a combination of outstanding screen assembly mechanical and electrical properties, including toughness, wear and chemical resistance. Embodiments of the present invention use a thermoplastic injection molded material. 1. A method for screening a material , comprising:attaching a screen assembly to a vibratory screening machine;wherein the screen assembly includes a screen element having a series of screening openings forming a screen element screening surface, and a subgrid,wherein screen elements are secured to a top surface of the subgrid via laser welding,wherein multiple subgrids are secured together to form the screen assembly and the screen assembly has a continuous screen assembly screening surface including multiple screen element screening surfaces, wherein the screen element is a single thermoplastic injection molded piece; andscreening the material using the screen assembly.2. The method of claim 1 , wherein the screen element comprises an edge portion claim 1 , and wherein the screen element has screen surface elements forming the series of screening openings.3. The method of claim 2 , wherein the screen surface elements are elongated members forming the series of screening openings claim 2 , the screening openings being elongated slots having a distance of approximately 43 microns to approximately 1000 microns between inner surfaces of each screen surface element of the screen surface elements.4. The method of claim 2 , wherein the screen surface elements are elongated members forming the series of screening openings claim 2 , the screening openings being ...

MECHANICAL FASTENING NETS AND METHODS OF MAKING THE SAME

A method of making a mechanical fastening net. The method includes providing a net having strands of polymer and open areas between the strands of polymer and molding a portion of the polymer in the strands of the net into upstanding posts to form the mechanical fastening net. A mechanical fastening net that includes a polymeric backing, a plurality of openings in the polymeric backing, and upstanding posts on at least one of the first or second major surface of the polymeric backing is also disclosed. The polymeric backing has a range of thicknesses ranging from minimum to maximum thickness, and for at least a portion of the polymeric backing, the minimum thickness of the polymeric backing is where it abuts one of the openings. 1. A method of making a mechanical fastening net , the method comprising:providing a net comprising strands of polymer and open areas between the strands of polymer; andmolding a portion of the polymer in the strands of the net into upstanding posts to form the mechanical fastening net.2. The method of claim 1 , wherein the strands are periodically bonded together at bond regions throughout the net.3. The method of claim 1 , wherein the strands of polymer are solid.4. The method of claim 3 , wherein molding comprises pressing the net onto a heated mold surface with cavities having the inverse shape of the upstanding posts.5. The method of claim 1 , wherein the strands of polymer are molten.6. The method of claim 5 , wherein providing the net comprises extruding the net.7. The method of claim 6 , wherein extruding the net comprises:providing an extrusion die comprising a plurality of shims positioned adjacent to one another, the shims together defining a cavity, the extrusion die having a plurality of first dispensing orifices in fluid communication with the cavity and a plurality of second dispensing orifices in fluid communication with the cavity, such that the first and second dispensing orifices are alternated; and{'b': '2', 'dispensing ...

REINFORCING ARTICLE

A reinforcing article () includes a porous substrate layer () and a plurality of parallel first continuous fiber elements () spaced apart from each other and extending along a first direction and fixed to the porous substrate (). Each first continuous fiber element () includes a plurality of parallel and co-extending continuous fibers () embedded in a thermoplastic resin (). 1. A reinforcing article comprising:a porous substrate layer; anda plurality of parallel first continuous fiber elements spaced apart from each other and extending along a first direction and fixed to the porous substrate, each first continuous fiber element comprising a plurality of parallel and co-extending continuous fibers embedded in a thermoplastic resin,a plurality of parallel second continuous fiber elements spaced apart from each other and extending along a second direction different than the first direction, each second continuous fiber element comprising a plurality of parallel and co-extending continuous fibers embedded in a thermoplastic resin, and the plurality of parallel second continuous fiber elements are fixed to the porous substrate layer; andthe first plurality of parallel first continuous fiber elements and the second plurality of parallel first continuous fiber elements are fixed to each other and form an open lattice structure defining a plurality of openings.2. The article according to claim 1 , wherein the porous substrate is an open lattice substrate having lattice openings of at least 1 mm and a substrate weight in a range from 60 grams/meterto 700 grams/meter.3. The article according to claim 1 , wherein the porous substrate is a non-woven substrate having a substrate weight in a range from 30 grams/meterto 100 grams/meter.4. The article according to claim 1 , wherein the first continuous fiber elements each comprise at least 100 parallel and co-extending continuous fibers embedded within the thermoplastic resin and the second continuous fiber elements each comprise ...

INJECTION MOLDED SCREENING APPARATUSES AND METHODS

Screening members, screening assemblies, methods for fabricating screening members and assemblies and methods for screening materials are provided for vibratory screening machines that incorporate the use of injection molded materials. Use of injection molded screen elements provide, inter alia, for: varying screening surface configurations; fast and relatively simple screen assembly fabrication; and a combination of outstanding screen assembly mechanical and electrical properties, including toughness, wear and chemical resistance. Embodiments of the present invention use a thermoplastic injection molded material. 1. A method of manufacturing a screen assembly , the method comprising:injection molding a plurality of independently formed thermoplastic screen elements each including openings having sizes in a range from approximately 40 microns to 150 microns;forming a support structure having support structure openings;securing the screen elements over a plurality of support structure openings to thereby form a screening surface.2. The method of claim 1 , wherein forming the support structure further comprises configuring the support structure to have:a first plurality of rails that are parallel to one another; anda second plurality of rails that are parallel to one another.3. The method of claim 2 , wherein the support structure openings are formed as spaces between neighboring rails in the first and second pluralities of rails.4. The method of claim 2 , wherein securing the screen elements over the plurality of support structure openings further comprises securing the screen elements to rails of the first and second pluralities of rails.5. The method of claim 2 , wherein first and second pluralities of rails form a rectangular grid such that support structure openings have rectangular shapes.6. The method of claim 5 , further comprising configuring the screen elements to each have a rectangular shape claim 5 , andsecuring the screen elements over a plurality of ...

HEAT EXCHANGERS MADE FROM ADDITIVELY MANUFACTURED SACRIFICIAL TEMPLATES

A method of manufacturing a heat exchanger including a heat exchanger core of a first material, the method including additive manufacturing a sacrificial scaffold of a second material, the sacrificial scaffold corresponding in shape to that of the heat exchanger core, coating the sacrificial scaffold with a layer of the first material, and removing the sacrificial scaffold to leave behind the heat exchanger core with an integrated self-aligned passage. 1. A heat exchanger core comprising:a first passage, a second passage, and a third passage, each of the first, second, and third passages being configured to couple an inlet manifold and an outlet manifold,wherein each of the first, second, and third passages has a wavy pattern along a lengthwise direction of the first, second, and third passages and has a shape in cross-section, the shape having a first line of symmetry corresponding to a major axis of the shape, and a second line of symmetry perpendicular to the first line of symmetry and corresponding to a minor axis of the shape.2. The heat exchanger core of claim 1 , wherein all shapes on planes normal to the lengthwise direction have areas and shapes varying by less than about 10%.3. The heat exchanger core of claim 1 , wherein the shape and area of the cross-section vary by less than 10%.4. The heat exchanger core of claim 1 , wherein the shape has four quadrant splines defined by the first and second lines of symmetry claim 1 , each quadrant spline having rotation symmetry about a midpoint of the quadrant spline.5. The heat exchanger core of claim 1 , wherein the shape is a tapered ellipse.6. The heat exchanger core of claim 1 , wherein the minor axes of the first claim 1 , second claim 1 , and third passages are parallel claim 1 ,wherein the second passage is arranged between the first and third passages along a direction of the minor axis, andwherein for every point along a direction corresponding to a major axis of the shape, a summation of separations ...

THREE-DIMENSIONAL STRUCTURE

A three-dimensional structure according to the present invention is a three-dimensional structure defined by X, Y, and Z directions, including: a body portion in which a plurality of through holes extending in the X direction are disposed in alignment in at least one of the Y and Z directions; and a partition portion that is provided in at least one of the through holes and that partitions the through hole in at least one location in an axial direction of the through hole, wherein the three-dimensional structure is formed by a rubber composition. 114.-. (canceled)15. A three-dimensional structure defined by X , Y , and Z directions , comprising:a body portion in which a plurality of through holes extending in the X direction are disposed in alignment in at least one of the Y and Z directions; anda partition portion that is provided in at least one of the through holes and that partitions the through hole in at least one location in an axial direction of the through hole, whereinthe three-dimensional structure is formed by a rubber composition.16. The three-dimensional structure according to claim 15 , whereinthe partition portion is provided in a plurality of the through holes, andthe partition portions provided in adjacent ones of the through holes are provided so as to be adjacent to each other.17. The three-dimensional structure according to claim 16 , whereinthe partition portions are provided in a plurality of locations in an axial direction of a plurality of the through holes, andthe partition portions provided in adjacent ones of the through holes are provided so as to be adjacent to each other.18. The three-dimensional structure according to claim 17 , whereinintervals between the plurality of partition portions provided in the through holes are uniform.19. The three-dimensional structure according to claim 17 , whereinintervals between a plurality of partition portions provided in the through holes are different.20. The three-dimensional structure according ...

INJECTION MOLDED SCREENING APPARATUSES AND METHODS

Screening members, screening assemblies, methods for fabricating screening members and assemblies and methods for screening materials are provided for vibratory screening machines that incorporate the use of injection molded materials. Use of injection molded screen elements provide, inter alia, for: varying screening surface configurations; fast and relatively simple screen assembly fabrication; and a combination of outstanding screen assembly mechanical and electrical properties, including toughness, wear and chemical resistance. Embodiments of the present invention use a thermoplastic injection molded material. 1. A screen assembly , comprising:a subgrid; and screening openings that are elongated slots having substantially uniform width W and substantially uniform length L, wherein the width W of the screening openings is approximately 40 μm≤W≤200 μm and the length L of the screening openings is approximately 0.7 mm≤L≤2 mm; and', 'surface elements separating the screening openings, the surface elements having a thickness T that is approximately 70 μm≤T≤400 μm;, 'a screen element attached to the subgrid, the screen element having a screening surface comprisingwherein the screen assembly has an open screening area of approximately 5% to approximately 35% of a total area of the screening surface.2. The screen assembly of claim 1 , wherein:the surface element thickness is T≈356 μm;the length of the screening openings is L≈1.9 mm; andthe open screening area varies approximately from 6% to 24% as the width W of the screening openings varies approximately from 45 μm to 180 μm.3. The screen assembly of claim 1 , wherein:the surface element thickness is T≈178 μm;the length of the screening openings is L≈1.2 mm; andthe open screening area varies approximately from 10% to 28% as the width W of the screening openings varies approximately from 45 μm to 180 μm.4. The screen assembly of claim 1 , wherein:the surface element thickness is T≈127 μm;the length of the screening ...

Industrial fabric comprising an extruded mesh and method of making thereof

A structure for use in industrial fabrics such as paper machine clothing and engineered fabrics. The structure is a bicomponent extruded elastomeric netting or mesh having a high degree of both compressibility under an applied normal load and excellent recovery (resiliency or spring back) upon removal of that load.

INJECTION MOLDED SCREENING APPARATUSES AND METHODS

A disclosed screening apparatus includes a subgrid, and a screen element attached to the subgrid via laser welding at a plurality of attachment positions such that, under vibrational excitation, the screen element has a pre-determined profile of vibrational motion relative to the subgrid. The screen element may be attached at a maximal number of attachment locations to the subgrid to minimize relative motion of the screen element and the subgrid under vibrational excitation, or the screen element may be attached a sub-set of the maximal number of attachment locations to allow vibrational motion of the screen element relative to the subgrid. A disclosed method may include attaching a plurality of screen elements to a respective plurality of subgrids, attaching the plurality of subgrids to one another to form a screening pre-assembly, and cutting edges of the screening pre-assembly to form the screen assembly having a perimeter with a pre-determined shape. 1. A screening apparatus , comprising:a subgrid; anda screen element attached to the subgrid at a plurality of attachment positions such that under vibrational excitation, the screen element has a pre-determined profile of vibrational motion relative to the subgrid.2. The apparatus of claim 1 , wherein the screen element is a single thermoplastic injection molded piece.3. The apparatus of claim 1 , further comprising attachment arrangements claim 1 ,wherein the screen element is configured to be attached to the subgrid by using laser welding to melt one or more of the attachment arrangements to form a bond between the screen element and the subgrid.4. The apparatus of claim 3 , wherein the screen element is attached to the subgrid by melting certain attachment arrangements and leaving other attachment arrangements not melted to thereby allow relative motion between the screen element and subgrid as dictated by a pattern of melted and non-melted attachment arrangements.5. The apparatus of claim 3 , wherein the ...

MULTI-AXIAL GRID OR MESH STRUCTURES WITH HIGH ASPECT RATIO RIBS

A multi-axial geogrid possesses a series of interconnected strands or ribs that are arranged along at least two different axes within the plane of the structure. The strands or ribs have an aspect ratio, defined as the ratio of the thickness to width, of greater than 1.0, thickness being the direction normal to the plane of the structure. The geogrid can be manufactured by modifying the process parameters in order to create high aspect ratio ribs, using any of the various known methods for producing geogrids. A reinforced civil engineering structure, and method therefor, is formed by embedding in soil one or more horizontal layers of geogrid having high aspect ratio ribs. The reinforced structure shows improved rutting performance when subjected to vehicular traffic.

INJECTION MOLDED SCREENING APPARATUSES AND METHODS

A disclosed screening apparatus includes a subgrid, and a screen element attached to the subgrid via laser welding at a plurality of attachment positions such that, under vibrational excitation, the screen element has a pre-determined profile of vibrational motion relative to the subgrid. The screen element may be attached at a maximal number of attachment locations to the subgrid to minimize relative motion of the screen element and the subgrid under vibrational excitation, or the screen element may be attached a sub-set of the maximal number of attachment locations to allow vibrational motion of the screen element relative to the subgrid. A disclosed method may include attaching a plurality of screen elements to a respective plurality of subgrids, attaching the plurality of subgrids to one another to form a screening pre-assembly, and cutting edges of the screening pre-assembly to form the screen assembly having a perimeter with a pre-determined shape. 1. A screen assembly for vibratory screening applications , the screen assembly configured to provide one or more relatively large open screening areas while having structurally stable small screen openings , the screen assembly comprising:a continuous screen assembly screening surface comprised of a plurality of thermoplastic injection molded screen elements;each of the plurality of thermoplastic injection molded screen elements having screen openings ranging in size from about 43 to about 1000 microns fabricated during the injection molding;wherein the thermoplastic injection molded screen elements are assembled together to form the continuous screen assembly screening surface having an open screening area of at least about 16 percent of a total screening area.2. The screen assembly of claim 1 , further comprising a support structure claim 1 , wherein the thermoplastic injection molded screening elements are mounted to a support structure.3. The screen assembly of claim 2 , wherein the support structure comprises ...

Method for producing a separation net and separation net

The invention relates to a method for producing a separation net and to a separation net ( 10 ), in particular for vehicle interiors, which has a net-like, tear-resistant textile web ( 11 ) formed of textile threads ( 12 ), which is cut to any peripheral contour, wherein the loose ends ( 13 ) of the textile threads ( 12 ) that were created by a separating cut are securely bound at the edges in a plastic material of a single-layered edge strip ( 18 ). The textile web ( 11 ) can have any peripheral contour, and the loose ends ( 13 ) of the textile threads ( 12 ) of the textile web ( 11 ) that were created by a cutting to size are embedded at least at the side edges ( 16, 17 ).

AMINO ACID-BASED POLY(ESTER UREA) POLYMER MESH FOR HERNIA AND OTHER SOFT TISSUE APPLICATIONS

In one or more embodiments, the present invention is directed to a implantable polymer mesh for use in hernia and other soft tissue repair made using amino acid based poly(ester urea) (PEU) polymers. In some embodiments, the implantable polymer mesh is made using linear or branched -valine based PEUs and displays mechanical properties similar to poly(propylene) (PP), but with significantly less fibrous capsule formation. In some embodiments, the implantable polymer mesh is made using -valine-co--phenylalanine PEUs. In some embodiments, the implantable polymer mesh is made using these PEUs in a composite with an extracellular matrix (ECM). In various embodiments, these amino acid-based PEU materials can be formed into implantable polymer mesh having a conventional size and shape by a wide variety of techniques including conventional compression molding, vacuum molding, blade coating, flow coating, and/or solvent casting. 1. (canceled)2. (canceled)3. (canceled)4. (canceled)5. (canceled)6. (canceled)7. (canceled)8. (canceled)9. (canceled)10. (canceled)11. (canceled)12. (canceled)13. (canceled)14. A polymer mesh for soft tissue repair comprising an amino acid-based poly(ester urea) polymer wherein the amino acid-based poly(ester urea) polymer is a copolymer comprising a first type of amino acid based polyester monomer residue and a second type amino acid based polyester monomer residue separated by urea bonds , wherein the first type of amino acid based polyester monomer residue and the second type of amino acid based polyester monomer residue have different chemical structures.15. The polymer mesh for soft tissue repair of wherein said first type of amino acid based polyester monomer residues comprises two amino acid residues separated by from about 2 to about 20 carbon atoms.16. The polymer mesh for soft tissue repair of wherein each of said two amino acids in said first type of amino acid based polyester monomer are selected from the group consisting of -valine claim ...

GEOGRIDS

There is disclosed a geogrid in the form of an integral, mesh structure comprising molecularly orientated polymeric material, the mesh structure formed of interconnecting mesh defining elements including elongate tensile elements wherein the molecular orientation of the mesh structure is uniform throughout the extent thereof. A method of making the geogrid is also described and its use in stabilizing, reinforcing or strengthening a mass of particulate material. 1. A geogrid in the form of an integral , mesh structure comprising molecularly orientated polymeric material , the mesh structure formed of interconnecting mesh defining elements including elongate tensile elements wherein the molecular orientation of the mesh structure is uniform throughout the extent thereof.2. A geogrid in the form of an integral , mesh structure comprising polymeric material , the mesh structure comprising elongate tensile elements interconnected by junctions in the mesh structure wherein the junctions and the elongate tensile elements have the same mean thickness.3. A geogrid as claimed in wherein the polymeric material of the geogrid is uniformly molecularly oriented throughout the extent thereof.4. A geogrid in the form of an integral claim 2 , mesh structure comprising molecularly orientated polymeric material claim 2 , the mesh structure comprising elongate tensile elements interconnected by junctions in the mesh structure wherein there is no thickening of the junctions caused by stretching of the polymeric material.5. A geogrid as claimed in wherein the cross-section of the tensile elements is uniform along their length.6. A geogrid as claimed in wherein the cross-section of the elongate tensile elements is rectangular.7. A geogrid as claimed in in which the polymeric material is uniaxially oriented.8. A uniax geogrid as claimed in having a Creep Reduction Factor (RF) determined in accordance with PD ISO/TR 20432:2007 on the basis of a Static Creep Tests in accordance with BE EN ...

INJECTION MOLDED SCREENING APPARATUSES AND METHODS

Screening members, screening assemblies, methods for fabricating screening members and assemblies and methods for screening materials are provided for vibratory screening machines that incorporate the use of injection molded materials. Use of injection molded screen elements provide, inter alia, for: varying screening surface configurations; fast and relatively simple screen assembly fabrication; and a combination of outstanding screen assembly mechanical and electrical properties, including toughness, wear and chemical resistance. Embodiments of the present invention use a thermoplastic injection molded material. 1. A method of fabricating a screen assembly , comprising:laser welding a screen element of a first material to a subgrid of a second material;attaching multiple subgrids together to form the screen assembly;wherein the first material and the second material are different materials; andwherein the first material and the second material are fused together at laser weld locations.2. The method for fabricating a screen assembly of claim 1 , wherein the screen assembly has a first adhesion arrangement on a bottom surface of the screen element and the subgrid has a second adhesion arrangement on a top surface of the subgrid.3. The method for fabricating a screen assembly of claim 2 , wherein the first adhesion arrangement is a plurality of pocket cavities and the second adhesion arrangement is a plurality of fusion bars.4. The method for fabricating a screen assembly of claim 3 , where the plurality of pocket cavities are configured to mate with the plurality of fusion bars.5. The method for fabricating a screen assembly of claim 1 , further comprising: locating the screen element upon the subgrid via location apertures in the screen element and location extensions on a top surface of the subgrid.6. The method for fabricating a screen assembly of claim 4 , further comprising: passing a laser through the screen element such that it contacts the plurality of ...

THREE-DIMENSIONAL POLYMERIC STRAND NETTING, DIES, AND METHODS OF MAKING THE SAME

Three-dimensional polymeric strand netting, wherein a plurality of the polymeric strands are periodically joined together in a regular pattern at bond regions throughout the array, wherein a majority of the polymeric strands are periodically bonded to at least two (three, four, five, six, or more) adjacent polymeric strands, and wherein no polymeric strands are continuously bonded to a polymeric strand. Three-dimensional polymeric strand netting described herein have a variety of uses, including wound care, tapes, filtration, absorbent articles, pest control articles, geotextile applications, water/vapor management in clothing, reinforcement for nonwoven articles, self bulking articles, floor coverings, grip supports, athletic articles, and pattern coated adhesives. 18.-. (canceled)9. A method of making a three-dimensional polymeric strand netting , wherein a plurality of the polymeric strands are periodically joined together in a regular pattern at bond regions throughout the netting , wherein at least some of the polymeric strands are periodically bonded to at least three adjacent polymeric strands , and wherein no polymeric strands are continuously bonded to another polymeric strand , the method comprising:providing an extrusion die comprising a plurality of shims positioned adjacent to one another, the shims together defining at least a first and a dispensing surface, wherein the dispensing surface has a first array of first dispensing orifices and a second array of second dispensing orifices positioned adjacent to each other, alternating with a third array of third dispensing orifices, wherein the plurality of shims comprises a plurality of a repeating sequence of shims, wherein the repeating sequence comprises a shim that provides a fluid passageway between a cavity and one of the first dispensing orifices, a shim that provides a fluid passageway between a cavity and one of the second dispensing orifices, and a shim that provides a fluid passageway between a ...

INJECTION MOLDED SCREENING APPARATUSES AND METHODS

Screening members, screening assemblies, methods for fabricating screening members and assemblies and methods for screening materials are provided for vibratory screening machines that incorporate the use of injection molded materials. Use of injection molded screen elements provide, inter alia, for: varying screening surface configurations; fast and relatively simple screen assembly fabrication; and a combination of outstanding screen assembly mechanical and electrical properties, including toughness, wear and chemical resistance. Embodiments of the present invention use a thermoplastic injection molded material. 1. A method of fabricating a screen assembly , comprising:laser welding a screen element of a first material to a subgrid of a second material;attaching multiple subgrids together to form the screen assembly;wherein the first material and the second material are different materials; andwherein the first material and the second material are fused together at laser weld locations.2. The method for fabricating a screen assembly of claim 1 , wherein the screen assembly has a first adhesion arrangement on a bottom surface of the screen element and the subgrid has a second adhesion arrangement on a top surface of the subgrid.3. The method for fabricating a screen assembly of claim 2 , wherein the first adhesion arrangement is a plurality of pocket cavities and the second adhesion arrangement is a plurality of fusion bars.4. The method for fabricating a screen assembly of claim 3 , where the plurality of pocket cavities are configured to mate with the plurality of fusion bars.5. The method for fabricating a screen assembly of claim 1 , further comprising: locating the screen element upon the subgrid via location apertures in the screen element and location extensions on a top surface of the subgrid.6. The method for fabricating a screen assembly of claim 4 , further comprising: passing a laser through the screen element such that it contacts the plurality of ...

INJECTION MOLDED SCREENING APPARATUSES AND METHODS

Screening members, screening assemblies, methods for fabricating screening members and assemblies and methods for screening materials are provided for vibratory screening machines that incorporate the use of injection molded materials. Use of injection molded screen elements provide, inter alia, for: varying screening surface configurations; fast and relatively simple screen assembly fabrication; and a combination of outstanding screen assembly mechanical and electrical properties, including toughness, wear and chemical resistance. Embodiments of the present invention use a thermoplastic injection molded material. 1. A method of fabricating a screen assembly , comprising:laser welding a screen element of a first material to a subgrid of a second material;attaching multiple subgrids together to form the screen assembly;wherein the first material and the second material are different materials; andwherein the first material and the second material are fused together at laser weld locations.2. The method for fabricating a screen assembly of claim 1 , wherein the screen assembly has a first adhesion arrangement on a bottom surface of the screen element and the subgrid has a second adhesion arrangement on a top surface of the subgrid.3. The method for fabricating a screen assembly of claim 2 , wherein the first adhesion arrangement is a plurality of pocket cavities and the second adhesion arrangement is a plurality of fusion bars.4. The method for fabricating a screen assembly of claim 3 , where the plurality of pocket cavities are configured to mate with the plurality of fusion bars.5. The method for fabricating a screen assembly of claim 1 , further comprising: locating the screen element upon the subgrid via location apertures in the screen element and location extensions on a top surface of the subgrid.6. The method for fabricating a screen assembly of claim 4 , further comprising: passing a laser through the screen element such that it contacts the plurality of ...

Thermoplastic compositions, methods, apparatus, and uses

Thermoplastic polyurethane (TPU) compositions, methods for producing TPU compositions, methods of using TPU compositions, and apparatuses produced therefrom are disclosed. Disclosed TPU compositions include a thermoplastic polyurethane polymer, a heat stabilizer, a flow agent, and a filler material. The filler may be a glass fiber. Disclosed TPU compositions have improved thermal stability and improved flow properties suitable for injection molding of articles of manufacture having a large plurality of fine openings or pores. Articles produced from the composition have superior thermal stability, abrasion resistance, and chemical resistance. Example articles include screening members for vibratory screening machines. Further embodiments include compositions without heat stabilizers, flow agents, and filler materials, and compositions in which two TPU materials having different harnesses are combined to generate a material with a pre-determined hardness. Injection molded screen elements having openings from 25 to 150 microns and open screening area from 10% to 35% are disclosed.

STRANDS, NETTINGS, DIES, AND METHODS OF MAKING THE SAME

Netting comprising an array of polymeric strands, wherein the polymeric strands are periodically joined together at bond regions throughout the array, and wherein at least a plurality (i.e., at least two) of the polymeric strands have a core of a first polymeric material and a sheath of a second, different polymeric material. Nettings described herein have a variety of uses, including wound care, tapes, filtration, absorbent articles, pest control articles, geotextile applications, water/vapor management in clothing, reinforcement for nonwoven articles, self bulking articles, floor coverings, grip supports, athletic articles, and pattern coated adhesives. 13.-. (canceled)4. A method of making a netting comprised of an array of polymeric strands , the method comprising:providing an extrusion die comprising a plurality of shims positioned adjacent to one another, the shims together defining at least a first cavity and a second cavity, and a dispensing surface, wherein the dispensing surface has an array of dispensing orifices defined by an array of vestibules, wherein the plurality of shims comprises a plurality of a repeating sequence of shims, wherein the repeating sequence comprises: shims that provide a fluid passageway between the first cavity and one of the vestibules, shims that provide a second passageway extending from the second cavity to the same vestibule, and shims that provide a third passageway extending from the second cavity to the same vestibule, wherein each of the second and third passageways is on opposite sides of the first passageway, and each of the second and third passageways has a dimension larger than the first passageway at the point where the first passageway enters the vestibule; anddispensing first polymeric strands from the first dispensing orifices at a first strand speed while simultaneously dispensing second polymeric strands from the second dispensing orifices at a second strand speed, wherein the first strand speed is at least 2 ...

Mesh-patterned resin molded product

Provided is a mesh-patterned resin molded product ( 10 ) used for encasing and protecting a hollow piping member provided in a vehicle or a small ship. The mesh-patterned resin molded product ( 10 ), in a case of an ordinary state where no load is applied to the mesh-patterned resin molded product ( 10 ), includes a plurality of first resin wired portions ( 11 ) that extend parallel to each other, and a plurality of second resin wired portions ( 12 ) that extend parallel to each other in a direction respectively intersecting the first resin wired portions ( 11 ). Each of the first resin wired portions ( 11 ) and each of the second resin wired portions ( 12 ) are joined to each other on a joint portion ( 13 ) positioned at a mutual intersection portion. At the intersection portion, a direction passing through both axial centers of the first resin wired portion ( 11 ) and the second resin wired portion ( 12 ) and being orthogonal to both the axial centers is set as an orthographic projection direction P. When the first resin wired portion ( 11 ) and the second resin wired portion ( 12 ) are viewed in the orthographic projection direction P, a second surface area that is a surface area of the joint portion ( 13 ) between the first resin wired portion ( 11 ) and the second resin wired portion ( 12 ) is smaller than a first surface area that is an overlapping surface area between the first resin wired portion ( 11 ) and the second resin wired portion ( 12 ). The plurality of first resin wired portions ( 11 ) and the plurality of second resin wired portions ( 12 ) are formed of a material including a thermoplastic resin.

POLYMERIC NETTING WITH RIBBONS AND STRANDS, AND METHODS OF MAKING THE SAME

Polymeric netting comprising polymeric ribbons and polymeric strands, each of the polymeric ribbons and polymeric strands having a length and a width, wherein the length is the longest dimension and the width is the shortest dimension, wherein a plurality of the polymeric strands are bonded together to form a netting layer, wherein adjacent polymeric strands in the netting layer are bonded intermittently at multiple locations along their respective lengths, wherein the netting layer has first and second opposing major surfaces, wherein the polymeric ribbons have a height-to-width aspect ratio of at least 2:1 and a minor surface defined by their width and length, and wherein the minor surface of a plurality of the polymeric ribbons is bonded to the first major surface of the netting layer. Polymeric netting described herein are useful, for example, in an absorbent article. 1. A polymeric netting comprising polymeric ribbons and polymeric strands , each of the polymeric ribbons and polymeric strands having a length , a width , and a thickness , wherein the length is the longest dimension and the width is the shortest dimension , wherein a plurality of the polymeric strands are bonded together to form a netting layer , wherein adjacent polymeric strands in the netting layer are bonded intermittently at multiple locations along their respective lengths , wherein the netting layer has first and second opposing major surfaces , wherein the polymeric ribbons have a thickness-to-width aspect ratio of at least 2:1 and a minor surface defined by their width and length , and wherein the minor surface of a plurality of the polymeric ribbons is bonded to the first major surface of the netting layer.2. The polymeric netting of claim 1 , wherein each polymeric ribbon is bonded to only one of the polymeric strands.3. The polymeric netting of claim 1 , wherein each polymeric ribbon is intermittently bonded to a strand.4. The polymeric netting of claim 1 , wherein each polymeric ...

MULTIPURPOSE TOOLING FOR SHAPED PARTICLES

A method of transferring a shaped particle to a substrate includes providing a scrim of at least two elongate strands periodically joined together at flexible bond regions to form an array of apertures between the strands. The scrim is extended along at least one direction to increase the minimum dimension of the apertures. Shaped particles are applied to the extended scrim and at least a portion of the shaped particles enter in at least some of the apertures therein. The extended scrim is relaxed and frictionally retains the particles between the elongate strands. The particle loaded scrim is extended along at least one direction to release and transfer the shaped particles to the substrate in a predetermined orientation. 1. A method of transferring a shaped particle to a substrate , the method comprising:providing a scrim comprising at least two elongate strands periodically joined together at bond regions to form an array of apertures between the strands, wherein the apertures have a first minimum dimension, and wherein at least some of the bond regions are flexible;extending the scrim along at least one direction to form an extended scrim, wherein in the extended scrim the apertures increase in size to a second minimum dimension larger than the first minimum dimension to form an array of extended apertures;applying shaped particles to the extended scrim such that at least a portion of the shaped particles enter in at least some of the extended apertures;relaxing the extended scrim to form an array of unextended apertures with the first minimum dimension, wherein the shaped particles are frictionally retained in the unextended apertures to form a particle loaded scrim;extending the particle loaded scrim along at least one direction to form an extended particle loaded scrim with extended apertures having the second minimum dimension, wherein in the extended particle loaded scrim the shaped particles are released from the extended apertures; andtransferring the ...

Laminate, nonwoven fabric or woven fabric and reinforced laminate using them

Process of making high-strength yarns

An ultra-high molecular weight polyolefin having a viscosity average molecular weight of at least 500,000 is subjected to melt forming into a film, the thus obtained molten film or solid state film is transversely stretched while holding both the side edges of the film, the stretched film is longitudinally slitted into tapes, and then the thus obtained tapes are longitudinally stretched thereby to produce high-strength yarns easily. A number of slits are longitudinally or transversely made in films made of an ultra-high molecular weight polyolefin having a viscosity average molecular weight of at least 500,000 so that the films each take a meshy form when spread in the direction perpendicular to the slits, and the meshy form structures are stretched in the direction of the slits to prepare meshy webs having a high strength unidirectionally. At least one member selected from the thus prepared meshy webs is used as one nonwoven web, thereby producing a high-strength, web-crossed laminated nonwoven easily.

Laminated bodies and woven and nonwoven fabrics comprising α-olefin polymeric adhesion materials catalyzed with cyclopentadienyl catalyst

The present invention provides a laminated body comprising a uniaxially stretched laminate composed of (I) a first thermoplastic resin layer and (II) an adhesion layer which has a lower melting point than said first thermoplastic resin layer (I) and is provided on at least one surface of said thermoplastic resin layer (I), said adhesion layer (II) being composed of a composition containing (A) 100 to 30% by weight of an alpha -olefin (co)polymer having a melt flow rate of 0.01 g to 100 g/10 minutes obtained by (co)polymerizing an alpha -olefin in the presence of a catalyst which includes at least one compound of a transition metal of Group IV in the Periodic Table containing a ligand having a cyclopentadienyl skeleton, and (B) up to 70% by weight of an olefin-based polymer; in one embodiment, the present invention relates to a nonwoven or woven fabric and a reinforced laminated body, each derived from the laminated body.

Camshaft setter with no-clearance locking for internal combustion engine is in form of slide valve with two sectors, between which power transfer takes place

The camshaft setter has a slide valve (100) consisting of a first sector (104), which is the early power transfer sector with a first diameter (106), and a second sector (110), which is the wedging sector with a second diameter (112) less than the first. The sectors are arranged so that they are in the arrested state in the receiving aperture (116).

Mesh body and manufacturing method thereof

Resin net and its production method, and drawn product of polyethylene based resin

一种耐老化高强度土工栅格的制备方法

本发明涉及一种耐老化高强度土工栅格的制备方法，其制备方法为：由聚丙烯PP、高密度聚乙烯HDPE、填料、增韧剂、抗老化剂制为热塑乳液并挤出板材后、经压延成型、精密冲孔、预热拉伸取向为经纬结构网格，相容性、分散性较好，改善强度和耐老化性；由聚酯、聚偏氯乙烯制为结晶聚合共混物并热塑挤出成条带、使片晶错动，耐温综合性能，刚性、硬度以及抗蠕变性能优异、条带交叉设置在经纬结构网格上方和/或下方、并在节点处压合，冷却固化获得呈三角形单元的土工栅格，充分利用材料和结构强度，增加尺寸稳定性，使土工栅格成品具有极高抗拉强度、模量、低延伸率、良好抗蠕变性和抗老化性能，适用于土工加筋结构。

Resin net and its production method, and drawn product of polyethylene based resin

Disclosed is a soil reinforcing resin net including hole portions (5) arranged in the longitudinal and transverse directions of said resin net, each of which is formed by a pair of opposed ribs (5a) and a pair of opposed bars (5b), wherein projecting portions (6) are fixed on bar portions; a method of producing the soil reinforcing resin net; and a drawn product of a polyethylene based resin suitably used as the soil reinforcing resin net, which is obtained by drawing a polyethylene based resin composed of a linear ethylene main chain having 0.3 or more of saturated hydrocarbon groups branched thereto in one molecule.

Resin net and its production method, and drawn product of polyethylene based resin

Disclosed is a soil reinforcing resin net including hole portions (5) arranged in the longitudinal and transverse directions of said resin net, each of which is formed by a pair of opposed ribs (5a) and a pair of opposed bars (5b), wherein projecting portions (6) are fixed on bar portions; a method of producing the soil reinforcing resin net; and a drawn product of a polyethylene based resin suitably used as the soil reinforcing resin net, which is obtained by drawing a polyethylene based resin composed of a linear ethylene main chain having 0.3 or more of saturated hydrocarbon groups branched thereto in one molecule.

Resin net and its production method

A soil reinforcing resin net including hole portions arranged in the longitudinal and transverse directions of the resin net, each of which is formed by a pair of opposed ribs and a pair of opposed bars, wherein projecting portions are fixed on bar portions; a method of producing the soil reinforcing resin net; and a drawn product of a polyethylene based resin suitably used as the soil reinforcing resin net, which is obtained by drawing a polyethylene based resin composed of a linear ethylene main chain having 0.3 or more of saturated hydrocarbon groups branched thereto in one molecule.

Filtering face-piece respirator having an auxetic mesh in the mask body

A face-face respirator 10 has a harness 14 and a mask body 12. The mask body 12 includes a support structure 16 and a filtration structure 18. The support structure 16 includes an expanded mesh 20 shaped in an intended cup-shaped configuration and the filtration structure 18 includes a filtration layer 42 for removing contaminants from ambient air. The use of the expanding mesh 20 within the support structure 16 provides openings 26 of a more uniform size within the mesh 20 and reduces the likelihood of mesh overlap and mesh twist.

Method for manufacturing of anti-fouling fishing net

방오 어망의 제조방법이 개시된다. 본 발명의 방오 어망의 제조방법은, 방오 어망의 제조방법에 있어서, 무기항균제 및 자기 윤활성 첨가물이 포함된 합성수지와, 내열성 및 고 인장강도 섬유 또는 금속 세선으로 형성되는 코어를 압출금형으로 통과시켜 코어가 합성수지에 의해 피복되는 어망용 로프를 성형하되, 압출성형시 압출금형에 미세돌기를 가공하여 로프의 표면에 미세돌기를 형성하고, 상기 로프를 사용하여 어망을 제망하는 것을 특징으로 한다. 본 발명에 의하면, 2종의 방오 기능성 첨가물이 포함된 합성수지로 내열성 및 고 인장강도 섬유 또는 금속 세선으로 형성되는 코어를 피복하고 표면에 미세돌기가 형성되도록 어망용 로프를 압출성형한 후, 어망용 로프를 사용하여 방오 어망을 제망함으로써 견뢰성과 마모에 의한 방오 성능의 저감을 방지하고 내구성을 확보할 수 있다. Disclosed is a method for manufacturing an antifouling fishing net. In the manufacturing method of the antifouling fishing net of the present invention, in the manufacturing method of the antifouling fishing net, a core formed of synthetic resin containing an inorganic antibacterial agent and a self-lubricating additive, and heat-resistant and high tensile strength fibers or metal thin wires is passed through the core by extrusion To form a rope for fishing nets covered by a synthetic resin, by forming a fine protrusion on the surface of the rope by processing a fine protrusion in the extrusion mold during extrusion molding, characterized in that the fishing net using the rope. According to the present invention, after coating the core formed of heat-resistant and high tensile strength fiber or fine metal wire with synthetic resin containing two kinds of antifouling functional additives and extruding the fishing net rope to form fine projections on the surface, By using the rope to screen the antifouling fishing net, it is possible to prevent the reduction of the antifouling performance due to the fastness and wear and to ensure durability.

Gasket containing extruded grid and method of its production

FIELD: technological processes. SUBSTANCE: two-component extruded grid comprises the first layer of parallel strands extending in the longitudinal direction, the second layer of parallel strands on one side of the first layer extending transversely and containing elastomeric strands and the third layer of parallel strands on the opposite side of the second layer relative to the first layer, extending in the same direction as the strands of the first layer. The first, second and third layers are obtained by coextrusion substantially simultaneously so that the strands in the first layer are positioned or aligned in space between the strands in the third layer. EFFECT: increasing the elastic properties of the grid under load and improving the elastic restoration of the grid by thickness. 72 cl, 10 dwg РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 635 629 C2 (51) МПК B32B 25/10 (2006.01) B29C 47/04 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (21)(22) Заявка: 2015139228, 11.03.2014 (24) Дата начала отсчета срока действия патента: 11.03.2014 (72) Автор(ы): ХАНСЕН Роберт А. (US) (73) Патентообладатель(и): ОЛБАНИ ИНТЕРНЕШНЛ КОРП. (US) Дата регистрации: (56) Список документов, цитированных в отчете о поиске: US 20030124310 А1, 03.07.2003. WO Приоритет(ы): (30) Конвенционный приоритет: 15.03.2013 US 13/834,828 (45) Опубликовано: 14.11.2017 Бюл. № 32 (85) Дата начала рассмотрения заявки PCT на национальной фазе: 15.10.2015 (86) Заявка PCT: US 2014/023265 (11.03.2014) (87) Публикация заявки PCT: 2 6 3 5 6 2 9 (43) Дата публикации заявки: 21.04.2017 Бюл. № 12 2012100166 А1, 26.07.2012. US 20090047855 A1, 19.02.2009. US 20100262107 A1, 14.10.2010. RU 2368501 C2, 27.09.2009. RU 2106964 C1, 20.03.1998. R U 14.11.2017 2 6 3 5 6 2 9 R U Адрес для переписки: 191036, Санкт-Петербург, а/я 24, "НЕВИНПАТ", Поликарпову А.В. (54) ПРОКЛАДКА, СОДЕРЖАЩАЯ ЭКСТРУДИРОВАННУЮ СЕТКУ, И СПОСОБ ЕЕ ПОЛУЧЕНИЯ (57) Реферат: Изобретение относится к ...

Beta nucleation concentrate

Beta nucleation agents are used to impart improved properties in polypropylene materials such as sheets and speciality items, for example, geogrids. A convenient way of incorporating beta-nucleating agents into polypropylene used to fabricate an extruded product is through the use of a concentrate. A concentrate is defined as a highly loaded, pelletized polypropylene resin containing a higher concentration of nucleating agent then is desired in the final extruded sheet (product). The nucleating agent is present in the concentrate in a range of 0.01% to 2.0% (100 to 20,000 ppm), more preferably in a range of 0.02% to 1% (200 to 10,000 ppm). Typical concentrates are blended with non-nucleated polypropylene in the range of 0.5% to 50% of the total polypropylene content of the extruded product. A preferred range is between 1% and 10% of the total polypropylene content of the extruded product. A preferred concentration range of nucleant in the final geogrid product is 0.0001% to 0.1% (1-1000 ppm), most preferably 2-200 ppm. A concentrate can also contain other additives such as stabilizers, pigments, and processing agents. A concentrate containing a beta-nucleating agent cannot contain any additives which nucleate the alpha crystal form of polypropylene. Methods for the manufacture and use, as well as compositions incorporating these concentrates, are described.

Extruded polypropylene sheets containing beta spherulites

Improved extruded polypropylene sheets containing a high level of beta crystallinity and A process for making such sheets are disclosed herein. The polypropylene sheets comprise a resinous polymer of propylene and an effective amount of beta spherulites. Uniaxially or biaxially oriented mesh structures produced from the disclosed sheets exhibit lower density, higher strength, and higher torsional rigidity than polypropylene meshes without beta spherulites. Thus, lighter weight mesh structures which meet all of the physical property requirements for end-use applications, such as reinforcing grids to stabilize concrete and soil in civil engineering and landfill applications, are produced. The lighter weight extruded beta-nucleated sheet can also be stretched at higher line speeds, thereby reducing manufacturing costs.

机械紧固网及其制备方法

本发明公开了制备机械紧固网的方法。所述方法包括提供具有在聚合物的股线和所述聚合物的股线之间的开口面积的网，并将所述网的所述股线中的所述聚合物的一部分模塑成直立柱，以形成所述机械紧固网。本发明还公开了机械紧固网，所述机械紧固网包括聚合物背衬、在所述聚合物背衬中的多个开口和所述聚合物背衬的所述第一主表面或所述第二主表面中的至少一个上的直立柱。所述聚合物背衬具有在最小厚度至最大厚度范围内的一系列厚度，并且对于所述聚合物背衬的至少一部分，所述聚合物背衬的所述最小厚度是在其邻接所述开口之一的地方。

Laminate and uniaxially oriented laminate

(57)【要約】 【課題】 添加剤を含み、かつ後加工する際に添加剤の 析出によるトラブルを生じない積層体および一軸配向積 層体を提供する。 【解決手段】 添加剤を含む配向性樹脂Ａからなる内層 ２の両面に、内層からの添加剤の析出を防止する樹脂Ｂ からなる被覆層３を積層したことを特徴とする積層体、 およびそれを一軸延伸してなる一軸配向積層体１。

Film polimerici fibrillati come rinforzo in manufatti di leganti idraulici.

Preparation of transversely fibrillated film

Transversely fibrillated films are prepared by embossing a molten thermoplastic film with transverse striations, transversely stretching the film while leaving an unstretched edge portion which, after stretching is at least 100 percent thicker than the embossed and stretched section. The film is then subjected to fibrillating stress under conditions whereby the thick edges are not affected. These edges then serve to hold the transverse fibers, resulting from the fibrillation, together in an integral structure for further handling. The fibrillation structure is useful for preparing laminar nonwoven fabrics having the filaments in different layers disposed at an angle to one another.

Melt-embossed polymer film

1496786 Perforated plastic sheets SMITH & NEPHEW RESEARCH Ltd 19 June 1975 [19 June 1974] 27218/74 Headings B5A and B5B Net-like plastics material is formed by grooving a sheet on both sides to form two sets of parallel ribs so that at the crossover points of the grooves the sheet is reduced to a thin membrane which ruptures when the sheet is biaxially stretched. In order to produce orientation through the rib sections on stretching and thus ensure greater tensile strength the ratio between the area of the intersection common to two ribs of sets Ia and the cross-sectional area of either rib II is not greater than 2 : 1.

적층체 및 일축 배향 적층체

본 발명은 첨가제를 함유하며 또 후가공할때 첨가제의 석출에 의한 트러블을 일으키지 않는 적층체 및 일축배향 적층체를 제공한다. 본 발명은 첨가제를 함유하는 배향성수지(A)로 이루어지는 내층(2)의 양면에 내층으로부터의 첨가제의 석출을 방지하는 수지(B)로 이루어지는 피복층(3)을 적층한 것을 특징으로 하는 적층체 및 그것을 일축 연신하여 되는 일축배향 적층체(1)에 관한 것이다.

Cushion with extruded mesh and method for manufacturing the same

Process for Producing Molded Grating Using Phenol Resins and Molded Grating for Producing The Same

The purpose of the present invention is to provide a manufacturing method of a molded grating using a phenol resin and the molded grating manufactured thereby, wherein the manufacturing method is safe since flame propagation is prevented and does not generate toxic gases when fire occurs due to incombustibility of the molded grating by manufacturing the molded grating using a phenol resin, and the manufacturing method can manufacture a product with excellent economic efficiency, strength and appearance by enabling a lattice-shaped structure to be integrated and simplifying a process of the product. The manufacturing method of the molded grating using a phenol resin of the present invention: 1) a first step of pouring a phenol resin composition including 100 parts by weight of the phenol resin, 10 to 40 parts by weight of a curing agent, 20 to 100 parts by weight of aluminum hydroxide, and 1 to 15 parts by weight of antimony trioxide into a forming mold of a plastic material to maintain the phenol resin composition at 10 to 25°C; 2) a second step of injecting 20 to 60 parts by weight of a glass fiber into 100 parts by weight of the phenol resin composition of the first step, and impregnating the glass fiber with the phenol resin composition at 10 to 25°C; 3) a third step of curing the glass fiber which has been impregnated with the phenol resin composition in the second step at 50 to 90°C to manufacture a fiber reinforced plastic (FRP); 4) a fourth step of demolding the FRP manufactured in the third step from the forming mold at room temperature; and 5) a fifth step of post-curing the FRP demolded in the fourth step at 100 to 150°C for 2 to 4 hours to complete the molded grating. The manufacturing method of the present invention can manufacture the molded grating, not a pultruded grating, by using the phenol resin composition.

Process for forming a grid of polymeric material for supporting a structure

The present invention relates to a process for forming a polymeric pre-stretched grid for supporting a structure, such as an earthwork, wherein a suitable polymeric material, e.g. polyethylene, is used to make thin polymer strips by a molding machine, these strips are fully stretched by a pre-stretching machine so as to rearrange long bonds of polymer molecules to form the pre-stretched strips with high tensile strength, then these pre-stretched strips are crossed over each other longitudinally and transversely in line with a pre-set width by a machine (or manually) and the crossings of longitudinal and transverse network plies are united by gluing or hot fusion or otherwise to form a pre-stretched grid.

Mechanical fasteners net and preparation method thereof

本发明公开了制备机械紧固网的方法。所述方法包括提供具有在聚合物的股线和所述聚合物的股线之间的开口面积的网，并将所述网的所述股线中的所述聚合物的一部分模塑成直立柱，以形成所述机械紧固网。本发明还公开了机械紧固网，所述机械紧固网包括聚合物背衬、在所述聚合物背衬中的多个开口和所述聚合物背衬的所述第一主表面或所述第二主表面中的至少一个上的直立柱。所述聚合物背衬具有在最小厚度至最大厚度范围内的一系列厚度，并且对于所述聚合物背衬的至少一部分，所述聚合物背衬的所述最小厚度是在其邻接所述开口之一的地方。

Injection molded screening apparatuses and methods

Screening members, screening assemblies, methods for fabricating screening members and assemblies and methods for screening materials are provided for vibratory screening machines that incorporate the use of injection molded materials. Use of injection molded screen elements provide, inter alia, for: varying screening surface configurations; fast and relatively simple screen assembly fabrication; and a combination of outstanding screen assembly mechanical and electrical properties, including toughness, wear and chemical resistance. Embodiments of the present invention use a thermoplastic injection molded material.

Injection molded screening apparatuses and methods

Screening members, screening assemblies, methods for fabricating screening members and assemblies and methods for screening materials are provided for vibratory screening machines that incorporate the use of injection molded materials. Use of injection molded screen elements provide, inter alia, for: varying screening surface configurations; fast and relatively simple screen assembly fabrication; and a combination of outstanding screen assembly mechanical and electrical properties, including toughness, wear and chemical resistance. Embodiments of the present invention use a thermoplastic injection molded material.

Netting

本发明提供了一种结网(1101)，其包括聚合物股线(1102、1104)的阵列，其中所述聚合物股线在整个阵列的粘合区处周期性地接合在一起，并且其中至少多个即至少两个聚合物股线具有第一聚合物材料的芯(1114)以及不同的第二聚合物材料的皮(1103)。本文所述的结网有多种用途，包括伤口护理、条带、过滤、吸收制品、害虫控制制品、土工织物应用、服装中的水/蒸汽管理、织造制品的加固物、自膨胀制品、地板覆盖物、夹持支承、运动制品以及涂布有图案的粘合剂。

Laminated body, nonwoven fabric, woven fabric, and reinforced laminated body

The present invention provides a laminated body comprising a uniaxially stretched laminate composed of (I) a first thermoplastic resin layer and (II) an adhesion layer which has a lower melting point than said first thermoplastic resin layer (I) and is provided on at least one surface of said thermoplastic resin layer (I), said adhesion layer (II) being composed of a composition containing (A) 100 to 30 % by weight of an α-olefin (co)polymer having a melt flow rate of 0.01 g to 100 g/10 minutes obtained by (co)polymerizing an α-olefin in the presence of a catalyst which includes at least one compound of a transition metal of Group IV in the Periodic Table containing a ligand having a cyclopentadienyl skeleton, and (B) up to 70 % by weight of an olefin-based polymer; in one embodiment, the present invention relates to a nonwoven or woven fabric and a reinforced laminated body, each derived from the laminated body.

Method for making cellular structure from plastic

The plastics material device 6 has a plurality of generally quadrilateral openings 8 for receiving and gripping the containers 9, the openings 8 having their sides formed by strips 5, 10, each of the strips 5 of two opposite, corresponding sides of each opening being orientated along their length, the strips 10 of the remaining two opposite sides not being substantially orientated. The strips 5, at least, have substantial elasticity. The device may be made by forming holes or depressions in a plastics web and then stretching the web longitudinally to orientate just the strips 5 and to form the holes or depressions into the openings 8. <IMAGE>

Split polyethylene stretched material and process for producing the same

The present invention provides a split polyethylene stretched material having a tensile strength of at least 0.7 GPa when twisted in the range of 50-500 times/m, which material is produced by subjecting a polyethylene having an intrinsic viscosity of 5-50 dl/g as measured at 135° C. in decalin, i.e. an ultra-high-molecular-weight polyethylene to stretching and then subjecting the stretched polyethylene to splitting, as well as a process for producing said material. The split polyethylene stretched material according to the present invention has a large surface area and accordingly can be easily laminated to other materials, and has a high strength and flexibility.