Sheet-like building and construction materials with high wet slip resistance and high water penetration resistance, and methods of making same
View Patent ↗Moisture-resistant materials comprise an open net-like fabric with strands of varying thicknesses and polymer film thereon. The material is both resistant to water penetration and also slip resistant under dry or wet conditions. The moisture-resistant materials are suitable for use in various applications including roofing underpayment, flashing, housewrap and other construction sheet-like materials. An optional second layer of fabric may be applied to the moisture-resistant material, for example, to improve the strength, tear resistance, and scuff resistance of the moisture-resistant material.
1. A multilayer material comprising:
a) an open net-like fabric layer comprising
i) a first plurality of strands laid roughly parallel to one another and spaced apart in a first direction, where the first plurality of strands are thick strands, and
ii) a second plurality of strands that are laid roughly parallel to one another and spaced apart in a second direction across the first plurality of strands, where the second direction is different from the first direction, and where the second plurality of strands are thin strands,
wherein the first plurality of strands and the second plurality of strands are affixed to one another such that the open net-like fabric layer comprises a first surface and a second surface;
b) a polymer film layer having a first surface and a second surface; and
c) a third sheet-like substrate having a first surface and a second surface, wherein the third sheet-like substrate comprises nonwoven fabric, woven fabric, scrim, netting, woven tape material, flash-spun material, or a combination thereof; wherein the first surface of the open net-like fabric layer and the first surface of the polymer film layer are bonded together coextensively; wherein the first surface of the third sheet-like substrate is bonded coextensively across the second surface of the polymer film layer; and wherein the resulting multilayer material has a dry-surface slip resistance of at least about 1000 gf or a wet-surface slip resistance of at least about 1200 gf, as measured by the modified coefficient of friction test.
2. A multilayer material according to claim 1 , wherein the thick strands of the open net-like fabric layer run in the machine direction.
3. A multilayer material according to claim 1 , wherein the thick strands of the open net-like fabric layer run in the cross direction.
4. A multilayer material according to claim 1 , wherein the thick strands of the open net-like fabric layer run at an angle relative to the machine direction.
5. A multilayer material according to claim 1 , wherein the strands of the open net-like fabric layer comprise a material selected from the group consisting of cotton, linen, wool, flax, silk, hemp, and combinations thereof.
6. A multilayer material according to claim 1 , wherein the strands of the open net-like fabric layer comprise a material selected from the group consisting of polyolefins, polyamides, polyesters, polyacrylates, styrenic copolymers, polyurethanes, rayon, and combinations thereof.
7. A multilayer material according to claim 6 , wherein the strands of the open net-like fabric layer comprise a material selected from the group consisting of polyethylene, copolymers of polyethylene, polypropylene, copolymers of polypropylene, polyester, copolymers of polyesters, polyamides, copolymers of polyamides, blends thereof, bicomponent combinations thereof, and other heterogeneous combinations thereof.
8. A multilayer material according to claim 1 , wherein the thick strands of the open net-like fabric layer comprise strands that have an average diameter of at least about 10 mil (0.25 mm).
9. A multilayer material according to claim 1 , wherein the polymer film layer comprises a thermoplastic polymer that can be extruded into a film.
10. A multilayer material according to claim 9 , wherein the polymer film layer comprises a thermoplastic polymer selected from the group consisting of polyolefins, polyesters, polyamides, thermoplastic polyurethanes, polyvinyl chloride, styrenic block copolymers, copolymers thereof, and combinations thereof.
11. A multilayer material according to claim 1 , wherein the polymer film layer comprises a film with a WVTR greater than about 70 g/m 2 ·24 hr.
12. A multilayer material according to claim 11 , wherein the polymer film layer comprises a monolithic film.
13. A multilayer material according to claim 11 , wherein the polymer film layer comprises a microporous film.
14. A multilayer material according to claim 13 , wherein the polymer film layer comprises a filler.
15. A multilayer material according to claim 14 , wherein the polymer film layer comprises a filler selected from the group consisting of calcium carbonate, barium sulfate, talc, diatomaceous earth, titanium dioxide, and mixtures thereof.
16. A multilayer material according to claim 1 , wherein the polymer film layer is a multilayer film.
17. A multilayer material according to claim 1 , wherein the open net-like fabric layer and the polymer film layer are bonded coextensively across their first surfaces by extrusion lamination.
18. A multilayer material according to claim 1 , wherein the open net-like fabric layer and the polymer film layer are bonded coextensively across their first surfaces by adhesive, thermal, ultrasonic, or calender lamination.
19. A multilayer material according to claim 1 , wherein the third sheet-like substrate is bonded to the second surface of the polymer film layer by extrusion, adhesive, ultrasonic, thermal, or calender lamination.
20. A multilayer material comprising:
a) an open net-like fabric layer comprising
i) a first plurality of thick strands that run roughly parallel to one another and are spaced apart in the machine direction, and
ii) a second plurality of thin strands that run roughly parallel to one another and are spaced apart in the cross direction across the first plurality of strands,
wherein the first plurality of strands and the second plurality of strands are affixed to one another such that the open net-like fabric layer comprises a first surface and a second surface; and
b) a polymer film layer having a first surface and a second surface; and
c) a third sheet-like substrate having a first surface and a second surface, wherein the third sheet-like substrate comprises nonwoven fabric, woven fabric, scrim, netting, woven tape material, flash-spun material, or a combination thereof;
wherein the first surface of the open net-like fabric layer and the first surface of the polymer film layer are bonded together coextensively, and the first surface of the third sheet-like substrate is bonded together coextensively to the second surface of the polymer film layer; and wherein the resulting multilayer material has a dry-surface slip resistance of at least about 1000 gf or a wet-surface slip resistance of at least about 1200 gf, as measured by the modified coefficient of friction test.
21. A multilayer material according to claim 20 , wherein the strands of the open net-like fabric layer comprise a material selected from the group consisting of cotton, linen, wool, flax, silk, hemp, and combinations thereof.
22. A multilayer material according to claim 20 , wherein the strands of the open net-like fabric layer comprise a material selected from the group consisting of polyolefins, polyamides, polyesters, polyacrylates, styrenic copolymers, polyurethanes, rayon, and combinations thereof.
23. A multilayer material according to claim 22 , wherein the strands of the open net-like fabric layer comprise a material selected from the group consisting of polyethylene, copolymers of polyethylene, polypropylene, copolymers of polypropylene, polyester, copolymers of polyesters, polyamides, copolymers of polyamides, blends thereof, bicomponent combinations thereof, and other heterogeneous combinations thereof.
24. A multilayer material according to claim 20 , wherein the thick strands of the open net-like fabric layer comprise strands that have an average diameter of at least about 10 mil (0.25 mm).
25. A multilayer material according to claim 20 , wherein the polymer film layer comprises a thermoplastic polymer selected from the group consisting of polyolefins, polyesters, polyamides, thermoplastic polyurethanes, polyvinyl chloride, styrenic block copolymers, copolymers thereof, and combinations thereof.
26. A multilayer material according to claim 20 , wherein the polymer film layer comprises a film with a WVTR greater than about 70 g/m 2 ·24 hr.
27. A multilayer material according to claim 26 , wherein the polymer film layer comprises a monolithic film.
28. A multilayer material according to claim 26 , wherein the polymer film layer comprises a microporous film.
29. A multilayer material according to claim 28 , wherein the polymer film layer comprises a filler selected from the group consisting of calcium carbonate, barium sulfate, talc, diatomaceous earth, titanium dioxide, and mixtures thereof.
30. A multilayer material according to claim 20 , wherein the polymer film layer is a multilayer film.
31. A multilayer material according to claim 20 , wherein the open net-like fabric layer and the polymer film layer are bonded coextensively across their first surfaces by extrusion lamination.
32. A multilayer material according to claim 20 , wherein the open net-like fabric layer and the polymer film layer are bonded coextensively across their first surfaces by adhesive, thermal, ultrasonic, or calender lamination.
33. A multilayer material according to claim 20 , wherein the third sheet-like substrate is bonded to the second surface of the polymer film layer by extrusion, adhesive, ultrasonic, thermal, or calender lamination.
34. A method of manufacturing a multilayer material comprising an open net-like fabric, a polymer film layer, and a third sheet-like substrate comprising:
a) providing an open net-like fabric layer comprising
i) a first plurality of strands laid roughly parallel to one another and spaced apart in a first direction, where the first plurality of strands are thick strands, and
ii) a second plurality of strands that are laid roughly parallel to one another and spaced apart in a second direction across the first plurality of strands, where the second direction is different from the first direction, and where the second plurality of strands are thin strands,
wherein the first plurality of strands and the second plurality of strands are affixed to one another such that the open net-like fabric layer comprises a first surface and a second surface;
b) providing a polymer film layer having a first surface and a second surface;
c) providing a third sheet-like substrate having a first surface and a second surface, wherein the third sheet-like substrate comprises nonwoven fabric, woven fabric, scrim, netting, woven tape material, flash-spun material, or a combination thereof;
d) bonding the first surface of the open net-like fabric layer and the first surface of the polymer film layer coextensively; and
e) bonding the first surface of the third sheet-like substrate and the second surface of the polymer film layer coextensively;
wherein the resulting multilayer material has a dry-surface slip resistance of at least about 1000 gf or a wet-surface slip resistance of at least about 1200 gf, as measured by the modified coefficient of friction test.
35. A method according to claim 34 , wherein the thick strands of the open net-like fabric layer run in the machine direction.
36. A method according to claim 34 , wherein the thick strands of the open net-like fabric layer run in the cross direction.
37. A method according to claim 34 , wherein the thick strands of the open net-like fabric layer run at an angle relative to the machine direction.
38. A method according to claim 34 , wherein the strands of the open net-like fabric layer comprise a material selected from the group consisting of cotton, linen, wool, flax, silk, hemp, and combinations thereof.
39. A method according to claim 34 , wherein the strands of the open net-like fabric layer comprise a material selected from the group consisting of polyolefins, polyamides, polyesters, polyacrylates, styrene block copolymers, polyurethanes, rayon, and combinations thereof.
40. A method according to claim 39 , wherein the strands of the open net-like fabric layer comprise a material selected from the group consisting of polyethylene, copolymers of polyethylene, polypropylene, copolymers of polypropylene, polyester, copolymers of polyesters, polyamides, copolymers of polyamides, blends thereof, bicomponent combinations thereof, and other heterogeneous combinations thereof.
41. A method according to claim 34 , wherein the thick strands of the open net-like fabric layer comprise strands that have an average diameter of at least about 10 mil (0.25 mm).
42. A method according to claim 34 , wherein the polymer film layer comprises a thermoplastic polymer that can be extruded into a film.
43. A method according to claim 42 , wherein the polymer film layer comprises a thermoplastic polymer selected from the group consisting of polyolefins, polyesters, polyamides, thermoplastic polyurethanes, polyvinyl chloride, styrenic block copolymers, copolymers thereof, and combinations thereof.
44. A method according to claim 34 , wherein the polymer film layer comprises a film with a WVTR greater than about 70 g/m 2 ·24 hr.
45. A method according to claim 44 , wherein the polymer film layer comprises a monolithic film.
46. A method according to claim 44 , wherein the polymer film layer comprises a microporous film.
47. A method according to claim 46 , wherein the polymer film layer comprises a filler.
48. A method according to claim 47 , wherein the polymer film layer comprises a filler selected from the group consisting of calcium carbonate, barium sulfate, talc, diatomaceous earth, titanium dioxide, and mixtures thereof.
49. A method according to claim 34 , wherein the polymer film layer is a multilayer film.
50. A method according to claim 34 , wherein the polymer film layer is extruded onto the open net-like fabric layer to bond the polymer film layer and open net-like fabric layer coextensively across their first surfaces by extrusion lamination.
51. A method according to claim 34 , wherein the open net-like fabric layer and the polymer film layer are bonded coextensively across their first surfaces by adhesive, thermal, ultrasonic, or calender lamination.
52. A method according to claim 34 , wherein the third sheet-like substrate is bonded to the second surface of the polymer film layer by extrusion, adhesive, ultrasonic, thermal, or calender lamination.
53. A multilayer material consisting of:
a) an open net-like fabric layer having
i) a first plurality of strands laid roughly parallel to one another and spaced apart in a first direction, where the first plurality of strands are thick strands, and
ii) a second plurality of strands that are laid roughly parallel to one another and spaced apart in a second direction across the first plurality of strands, where the second direction is different from the first direction, and where the second plurality of strands are thin strands,
wherein the first plurality of strands and the second plurality of strands are affixed to one another such that the open net-like fabric layer has a first surface and a second surface;
b) a polymer film layer having a first surface and a second surface; and
c) a third sheet-like substrate having a first surface and a second surface, wherein the third sheet-like substrate is a nonwoven fabric, woven fabric, scrim, netting, woven tape material, flash-spun material, or a combination thereof; wherein the first surface of the open net-like fabric layer and the first surface of the polymer film layer are bonded together coextensively; and wherein the first surface of the third sheet-like substrate is bonded coextensively across the second surface of the polymer film layer;
and wherein the resulting multilayer material has a dry-surface slip resistance of at least about 1000 gf or a wet-surface slip resistance of at least about 1200 gf, as measured by the modified coefficient of friction test.