Claims
- 1. A compressible wet-laid nonwoven mat reinforcement for polymerized resin compositions comprising:a resin composition; a base web comprised of 50 to 90 percent by weight glass fibers, 10 to 50 percent organic polymeric binder, and 0 to 15 percent poly(vinyl alcohol); and a secondary binder comprising 5 to 40 percent of the total mat weight, said secondary binder being soluble in or plasticized by said resin composition.
- 2. A nonwoven mat according to claim 1 wherein the glass fibers have a diameter of 6.5 to 13.5 microns and a length of 3 to 25 mm.
- 3. The non-woven mat of claim 1, wherein the polymeric binder is selected from the group consisting of polyolefins, copolyesters, vinyl acetate copolymers, polyamides, vinyl chloride polymers, and mixtures thereof.
- 4. A nonwoven mat according to claim 3 wherein the polymeric binder includes vinyl chloride polymer.
- 5. A nonwoven mat according to claim 4 wherein the vinyl chloride polymer is a powder having a particle size of about 50 to about 250 μm.
- 6. A nonwoven mat according to claim 1 wherein the polymeric binder includes fibers consisting of a polyolefin sheath and a polyester core.
- 7. A nonwoven mat according to claim 1 wherein the secondary binder is selected from the group consisting of acrylic copolymers, styrene-acrylic copolymers, vinyl acetate-acrylic copolymers, styrene-butadiene copolymers, vinyl acetate-ethylene copolymers, and vinyl acetate homopolymers.
- 8. A nonwoven mat according to claim 1 wherein the secondary binder is a styrene-acrylate copolymer.
- 9. A nonwoven mat according to claim 1 wherein the secondary binder is a styrene-butadiene copolymer.
- 10. A nonwoven mat according to claim 1 wherein the secondary binder is a vinyl acetate-ethylene copolymer.
- 11. A reinforcing substrate for a polymerzcd resin composition surface covering consisting essentially of a wet-laid nonwoven mat comprsing a resin composition; a base web comprised of 50 to 90 percent by weight glass fibers, 10 to 50 percent organic polymeric binder, and 0 to 15 percent poly(vinyl alcohol); and a second binder comprising 5 to 40 percent of the total mat weight, said secondary binder being soluble in or plasticized by said resin composition.
- 12. A substrate according to claim 11 wherein the secondary binder is selected from the group consisting of acrylic copolymers, styrene-acrylic copolymers, vinyl acetate-acrylic copolymers, styrene-butadiene copolymers, vinyl acetate-ethylene copolymers and vinyl acetate homopolymers.
- 13. A substrate according to claim 11 wherein the surface covering resin composition is a vinyl composition including a plasticizer and wherein the secondary binder is plasticized by or dissolves in the plasticizer.
- 14. A substrate according to claim 13 wherein both the secondary binder and the polymeric binder are plasticized by or dissolved in the plasticizer.
- 15. A substrate according to claim 13 wherein the plasticized binder has a viscoelastic flow which dissipates any compressive load during compressive movement of the surface covering.
- 16. The substrate of claim 11, wherein the polymeric binder is selected from the group consisting of polyolefins, copolyesters, vinyl acetate copolymers, polyamides, vinyl chloride polymers, and mixtures thereof.
- 17. The substrate of claim 16, wherein the polymeric binder includes vinyl chloride polymer.
- 18. The substrate of claim 17, wherein the vinyl chloride polymer is a powder having a particle size of about 50 to about 250 μm.
- 19. A compressible wet-laid nonwoven mat reinforcement for polymerized resin compositions comprising:a resin composition; a base web comprised of 50 to 90 percent by weight glass fibers, 10 to 50 percent organic polymeric binder powder, and 0 to 15 percent poly(vinyl alcohol); and a secondary binder comprising 5 to 40 percent of the total mat weight, said secondary binder being soluble in or plasticized by said resin composition.
DESCRIPTION
This application is a continuation-in-part of Ser. No. 08/619,785 filed Mar. 20, 1996, now abandoned. This application is related to U.S. patent application Ser. No. 08/964,694 for “Reinforced Thermoplastic Composite System,” filed Nov. 6, 1997.
US Referenced Citations (32)
Foreign Referenced Citations (2)
Number |
Date |
Country |
1 154 753 |
Apr 1958 |
FR |
WO 9735056 |
Sep 1997 |
WO |
Non-Patent Literature Citations (1)
Entry |
Parrinello, Nonwovens Conference, Fiber Geometry Effects on Physical Properties of Chopped Fiber Composites, (Jan. 10, 1990). |
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
08/619785 |
Mar 1996 |
US |
Child |
09/213068 |
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US |