Extruded netting exhibiting stretch and bonding

• US 6,692,606 B1
• Filed: 07/28/2000
• Issued: 02/17/2004
• Est. Priority Date: 08/01/1996
• Status: Expired due to Term

• Current Assignee: Conwed Plastics LLC (Mativ Holdings, Inc.)
• Original Assignee: Leucadia 6, LLC
• Inventors: Cederblad, Hans O., Lorenson, Mark W.
• Primary Examiner(s): Kelly, Cynthia H.
• Assistant Examiner(s): GRAY, JILL M
• Application Number:
  US09/629,638
• Time in Patent Office: 1,299 Days
• Field of Search: 156/244, 156/244.11, 156/244.22, 156/244.25, 156/290, 156/297, 156/163, 156/176, 156/178, 428/221
• US Class Current: 156/244.11
• CPC Class Codes: B29C 70/687 the inserts being oriented, e.g. nets or meshes
• CPC Class Codes: B29D 28/00 Producing nets or the like, e.g. meshes, latticesby knotting D04G
• CPC Class Codes: B32B 2262/0223 Vinyl resin fibres
• CPC Class Codes: B32B 2262/0253 Polyolefin fibres vinyl or acrylic copolymers B32B2262/0223 or B32B2262/0246
• CPC Class Codes: B32B 2262/0284 Polyethylene terephthalate [PET] or polybutylene terephthalate [PBT]
• CPC Class Codes: B32B 2262/14 Mixture of at least two fibres made of different materials
• CPC Class Codes: B32B 2305/38 Meshes, lattices or nets
• CPC Class Codes: B32B 37/04 characterised by the partial melting of at least one layer
• CPC Class Codes: B32B 37/24 with at least one layer not being coherent before laminating, e.g. made up from granular material sprinkled onto a substrate B32B37/15 takes precedence
• CPC Class Codes: B32B 5/022 Non-woven fabric
• CPC Class Codes: B32B 5/028 Net structure, e.g. spaced apart filaments bonded at the crossing points
• CPC Class Codes: B32B 5/08 the fibres or filaments of a layer being of different substances , e.g. conjugate fibres, mixture of different fibres
• CPC Class Codes: B32B 5/12 characterised by the relative arrangement of fibres or filaments of different layers, e.g. the fibres or filaments being parallel or perpendicular to each other
• CPC Class Codes: B32B 7/14 applied in spaced arrangements, e.g. in stripes
• CPC Class Codes: D04H 1/559 the fibres being within layered webs
• CPC Class Codes: D04H 3/04 in rectilinear paths, e.g. crossing at right angles
• CPC Class Codes: D04H 3/14 with bonds between thermoplastic yarns or filaments produced by welding
• CPC Class Codes: D04H 5/06 strengthened or consolidated by welding-together thermoplastic fibres, filaments, or yarns
• CPC Class Codes: D10B 2401/041 thermoplastic; thermosetting
• CPC Class Codes: Y10T 428/249921 Web or sheet containing structurally defined element or component
• CPC Class Codes: Y10T 442/107 : Comprising at least two chemically different fibers
• CPC Class Codes: Y10T 442/159 : Including a nonwoven fabric which is not a scrim
• CPC Class Codes: Y10T 442/16 : Two or more nonwoven layers
• CPC Class Codes: Y10T 442/3008 : Woven fabric has an elastic quality
• CPC Class Codes: Y10T 442/3016 : Including a preformed layer other than the elastic woven fabric [e.g., fabric or film or foil or sheet layer, etc.]
• CPC Class Codes: Y10T 442/3024 : Including elastic strand or strip
• CPC Class Codes: Y10T 442/326 : Including synthetic polymeric strand material
• CPC Class Codes: Y10T 442/3285 : Including polyester strand material

Abstract

Extruded net with at least some strands which melt away upon the application of heat while other strands maintain elastic, or other desirable, properties. This netting is advantageously combined with a fabric in which the low melting strands function as an adhesive, while the high melting strands maintain their designed properties in the final laminate product.

Claims

1. A method of fabricating a composite fabric including extruded net, comprising:

forming a fiber formed extruded net of relatively HMP strands and relatively LMP strands by die extrusion in which the strands overlie each other to form junctions;

combining the net with an overlay of a fabric to be laminated to the net with a predetermined selection of one set of strands positioned immediately adjacent to the fabric, and laminating the net and fabric.

2. The method of claim 1 wherein the one set of strands positioned against the fabric is the LMP set of strands.

3. The method of claim 2 wherein the LMP strands extend in the MD direction.

4. The method of claim 1 wherein the one set of strands positioned against the fabric is the HMP set.

5. The method of claim 4 wherein the LMP strands extend in the MD direction.

6. The method of claim 1, wherein the net is bonded to the fabric by melting the LMP strands into the fabric making the strands relatively inelastic, while relatively maintaining the HMP in tact.

7. The method of claim 1, wherein the HMP strands and the LMP strands are only in contact with one another at intersecting points.

8. The method of claim 1, wherein the HMP strands and the LMP strands are homogeneous.