Scrim made of twill-woven thermoplastic tapes

• US 20060166577A1
• Filed: 06/11/2003
• Published: 07/27/2006
• Est. Priority Date: 06/11/2002
• Status: Abandoned Application

• Current Assignee: InterWrap, Inc. (Owens Corning)
• Original Assignee: InterWrap, Inc. (Owens Corning)
• Inventors: Rashed, Mohamed Abdel Aziz
• Application Number:
  US10/517,794
• Publication Number:
  US 20060166577A1
• Time in Patent Office: Days
• US Class Current: 442/1
• CPC Class Codes: D03D 1/00 Woven fabrics designed to make specified articles
• CPC Class Codes: D03D 1/007 UV radiation protecting
• CPC Class Codes: D03D 15/283 synthetic polymer-based, e.g. polyamide or polyester fibres cellulose-based artificial fibres D03D15/225
• CPC Class Codes: D03D 15/46 Flat yarns, e.g. tapes or films
• CPC Class Codes: D03D 15/573 Tensile strength
• CPC Class Codes: D10B 2321/02 polyolefins
• CPC Class Codes: D10B 2321/021 polyethylene
• CPC Class Codes: D10B 2321/022 polypropylene
• CPC Class Codes: D10B 2401/041 thermoplastic; thermosetting
• CPC Class Codes: D10B 2401/063 high strength
• CPC Class Codes: D10B 2505/18 Outdoor fabrics, e.g. tents, tarpaulins D10B2507/00 takes precedence
• CPC Class Codes: Y10T 442/10 Scrim [e.g., open net or mesh, gauze, loose or open weave or knit, etc.]
• CPC Class Codes: Y10T 442/102 Woven scrim
• CPC Class Codes: Y10T 442/164 Including a preformed film, foil, or sheet
• CPC Class Codes: Y10T 442/259 Coating or impregnation provides protection from radiation [e.g., U.V., visible light, I.R., micscheme-change-itemave, high energy particle, etc.] or heat retention thru radiation absorption
• CPC Class Codes: Y10T 442/2631 Coating or impregnation provides heat or fire protection

Abstract

An industrial-strength scrim is made of thermoplastic tapes woven together in a twill weave, in which the weft tapes cross over at least two successive warp tapes and under at least one successive warp tape, in a repeating pattern. Such weave permits more tapes per inch to be accommodated in the scrim than for a plain weave, producing a scrim having greater mechanical strength, less cramming and folding of tapes and a smoother surface with fewer voids, suitable for coating.

Claims

1. A woven scrim made of thermoplastic tapes, said tapes being woven so as to form a plurality of oblique bands on a surface of said scrim, comprising:

(a) a first set of tapes generally parallel to each other;

(b) a second set of tapes generally parallel to each other and perpendicular to said first set of tapes;

(c) said tapes in said first set forming a repeating pattern of units comprising crossings-over and crossings-under of said tapes of said second set, each of said units comprising a sequential crossing-over of at least two and crossing-under of at least one, successive tapes in said second set;

(d) said pattern, with respect to each successive tape in said first set, being shifted in position by at least one tape of said second set; and

(e) said crossings-over of said tapes of said first set collectively forming said oblique bands on said surface of said scrim.

2. A woven scrim according to claim 1 wherein each of said units comprises a sequential crossing-over of two and crossing-under of two successive tapes in said second set.

3. A woven scrim according to claim 1 wherein each of said units comprises a sequential crossing-over of three and crossing-under of three successive tapes in said second set.

4. A woven scrim according to claim 1 wherein each of said units comprises a sequential crossing-over of four and crossing-under of four successive tapes in said second set.

5. A woven scrim according to claim 1 wherein each of said units comprises a sequential crossing-over of three and crossing-under of one successive tapes in said second set.

6. A woven scrim according to claim 1 wherein each of said units comprises a sequential crossing-over of one and crossing-under of two and crossing-over of two and crossing-under of one successive tapes in said second set.

7. A woven scrim according to claim 1 wherein each of said units comprises a sequential crossing-over of one and crossing-under of three and crossing-over of three and crossing-under of one successive tapes in said second set.

8. A woven scrim made of thermoplastic tapes, comprising:

(a) a plurality of warp tapes in a substantially parallel side-by-side relationship;

(b) a plurality of weft tapes in a substantially parallel side-by-side relationship;

(c) said warp tapes and said weft tapes being woven together in a twill weave.

9. A woven scrim according to claim 8 wherein said tapes have a width in the range of 1 to 10 mm.

10. A woven scrim according to claim 8 wherein said tapes have a thickness in the range of 0.02 to 0.1 mm

13. A woven scrim according to claim 8 wherein said tapes comprise polyolefin resin.

18. A woven scrim according to claim 8 wherein said scrim further includes reinforcing threads or reinforcing tapes grouped with at least some of said tapes of said scrim.

19. A woven scrim according to claim 8 wherein said scrim further includes reinforcing threads or reinforcing tapes replacing at least some of said tapes of said scrim.

20. A woven scrim according to claim 18 wherein some of said tapes are warp tapes and said reinforcing threads or reinforcing tapes replace at least some of said warp tapes.

21. A woven scrim according to claim 20 wherein said reinforcing threads or reinforcing tapes replace at least some of said warp tapes proximate to outer edges of said woven scrim.

22. A woven scrim according to claim 18 wherein said reinforcing tapes or reinforcing threads comprise polyolefin resin.

23. A woven scrim according to claim 18 wherein said reinforcing tapes or reinforcing threads comprise polyester resin.

24. A fabric comprising a woven scrim according to claim 8 laminated on one or both sides thereof to a waterproof thermoplastic film.

25. A fabric according to claim 24 wherein said film comprises polyolefin resin.

28. A fabric comprising a woven scrim according to claim 8 laminated on one or both sides thereof to a layer of slip-resistant material.

29. A fabric comprising a woven scrim according to claim 8 laminated on at least one side thereof to a metalized film.

30. A fabric comprising a woven scrim according to claim 8 laminated on one or both sides thereof to a layer of water-absorbent material.

31. A fabric according to claim 30 wherein said water-absorbent material is paper.

33. The use of the scrim of claim 8 as an industrial fabric, construction fabric or landfill cover.

34. The use of the fabric of claim 24 as an industrial fabric, tarpaulin, landfill cover, construction fabric or agricultural fabric.

11. (canceled)

12. (canceled)

14. (canceled)

15. (canceled)

16. (canceled)

17. (canceled)

26. (canceled)

27. (canceled)

32. (canceled)