Claims
- 1. A method of recycling carpet scrap to form a substantially homogeneous thermoplastic blend comprising the steps of:
- granulating carpet scrap having polymeric face fibers and polymeric backing to obtain an incompatible heterogeneous mixture of polyamide and polyesters in combination with polyolefins comprising:
- between about 12% and 35% polyamide;
- between about 1% and 3% polyester;
- between about 1% and 3% polypropylene;
- between about 7% and 18% polyethylene;
- between about 15% and 36% poly(ethylene-co-vinyl acetate); and
- between about 34% and 60% filler;
- adding a compatibilizing agent to said hererogenous mixture for compatibilization of said polymeric fibers and said polymeric backing, said compatibilizing agent comprises a compatibilizing amount of a mixture of:
- a maleic anhydride modified poly(ethylene-co-vinyl acetate); and
- a poly(ethylene-co-vinyl acetate) resin modifier, containing between about 9% and 36% vinyl acetate; and
- heating said granulated scrap in admixture with said compatibilizing agent to form a substantially homogeneous thermoplastic blend.
- 2. A method of recycling carpet scrap to form a substantially homogeneous thermoplastic blend comprising the steps of:
- granulating carpet scrap having polymeric face fibers and polymeric backing to obtain an incompatible heterogeneous mixture of polyamide and polyesters in combination with polyolefins comprising:
- between about 12% and 35% polyamide;
- between about 1% and 3% polyester;
- between about 1% and 3% polypropylene; and
- between about 7% and 18% polyethylene;
- adding a compatibilizing agent to said heterogenous mixture for compatibilization of said polymeric fibers and said polymeric backing, said compatibilizing accent comprises a compatibilizing amount of a mixture of:
- a maleic anhydride modified poly(ethylene-co-vinyl acetate); and
- a poly(ethylene-co-vinyl acetate) resin modifier, containing between about 9% and 36% vinyl acetate; and
- heating said granulated scrap in admixture with said compatibilizing agent to form a substantially homogeneous thermoplastic blend.
- 3. A method of recycling carpet scrap to form a substantially homogeneous thermoplastic blend comprising the steps of:
- granulating carpet scrap having polymeric face fibers and polymeric backing to obtain an incompatible heterogeneous mixture of polyamide in combination with polyolefins comprising:
- between about 12% and 35% polyamide;
- between about 1% and 3% polypropylene;
- between about 7% and 18% polyethylene;
- between about 15% and 36% poly(ethylene-co-vinyl acetate); and
- between about 34% and 60% filler;
- adding a compatibilizing agent to said hererogenous mixture for compatibilization of said polymeric fibers and said polymeric backing, said compatibilizing agent comprises a compatibilizing amount of a mixture of:
- a maleic anhydride modified poly(ethylene-co-vinyl acetate); and
- a poly(ethylene-co-vinyl acetate) resin modifier, containing between about 9% and 36% vinyl acetate; and
- heating said granulated scrap in admixture with said compatibilizing agent to form a substantially homogeneous thermoplastic blend.
- 4. A method of recycling carpet scrap to form a substantially homogeneous thermoplastic blend comprising the steps of:
- granulating carpet scrap having polymeric face fibers and polymeric backing to obtain an incompatible heterogeneous mixture of polyamide and polyesters in combination with polyolefins comprising:
- between about 12% and 35% polyamide;
- between about 1% and 3% polyester;
- between about 7% and 18% polyethylene;
- between about 15% and 36% poly(ethylene-co-vinyl acetate); and
- between about 34% and 60% filler;
- adding a compatibilizing agent to said hererogenous mixture for compatibilization of said polymeric fibers and said polymeric backing, said compatibilizing agent comprises a compatibilizing amount of a mixture of:
- a maleic anhydride modified poly(ethylene-co-vinyl acetate); and
- a poly(ethylene-co-vinyl acetate) resin modifier, containing between about 9% and 36% vinyl acetate; and
- heating said granulated scrap in admixture with said compatibilizing agent to form a substantially homogeneous thermoplastic blend.
- 5. A method of recycling carpet scrap to form a substantially homogeneous thermoplastic blend comprising the steps of:
- granulating carpet scrap having polymeric face fibers and polymeric backing to obtain an incompatible heterogeneous mixture of polyamide and polyesters in combination with polyolefins comprising;
- between about 12% and 35% polyamide;
- between about 1% and 3% polyester;
- between about 1% and 3% polypropylene;
- between about 15% and 36% poly(ethylene-co-vinyl acetate); and
- between about 34% and 60% filler;
- adding a compatibilizing agent to said heterogenous mixture for compatibilization of said polymeric fibers and said polymeric backing, said compatibilizing agent comprises a compatibilizing amount of a mixture of:
- a maleic anhydride modified poly(ethylene-co-vinyl acetate); and
- a poly(ethylene-co-vinyl acetate) resin modifier, containing between about 9% and 36% vinyl acetate; and
- heating said granulated scrap in admixture with said compatibilizing agent to form a substantially homogeneous thermoplastic blend.
- 6. A method of recycling carpet scrap to form a substantially homogeneous thermoplastic blend comprising the steps of:
- granulating carpet scrap having polymeric face fibers and polymeric backing to obtain an incompatible heterogeneous mixture of polyamide and polyesters in combination with polyolefins comprising:
- between about 35% and 55% polyamide;
- between about 10% and 15% polyester; and
- between about 40% and 45% polyethylene;
- adding a compatibilizing agent to said heterogenous mixture for compatibilization of said polymeric fibers and said polymeric backing, said compatibilizing agent comprises a compatibilizing amount of a mixture of:
- a maleic anhydride modified poly(ethylene-co-vinyl acetate); and
- a poly(ethylene-co-vinyl acetate) resin modifier, containing between about 9% and 36% vinyl acetate; and
- heating said granulated scrap in admixture with said compatibilizing agent to form a substantially homogeneous thermoplastic blend.
- 7. A method of recycling carpet scrap to form a substantially homogeneous thermoplastic blend comprising the steps of:
- granulating carpet scrap having polymeric face fibers and polymeric backing to obtain an incompatible heterogeneous mixture of polyesters in combination with polyolefins comprising:
- between about 33% and 60% polyester; and
- between about 40% and 67% polyethylene;
- adding a compatibilizing agent to said heterogenous mixture for compatibilization of said polymeric fibers and said polymeric backing, said compatibilizing agent comprises a compatibilizing amount of a mixture of:
- a maleic anhydride modified poly(ethylene-co-vinyl acetate); and
- a poly(ethylene-co-vinyl acetate) resin modifier, containing between about 9% and 36% vinyl acetate; and
- heating said granulated scrap in admixture with said compatibilizing agent to form a substantially homogeneous thermoplastic blend.
- 8. A method of recycling carpet scrap to form a substantially homogeneous thermoplastic blend comprising the steps of:
- granulating carpet scrap having polymeric face fibers and polymeric backing to obtain an incompatible heterogeneous mixture of polyesters in combination with polyolefins comprising:
- between about 15% and 44% polyester;
- between about 33% and 51% polypropylene; and
- between about 24% and 34% fiber;
- adding a compatibilizing agent to said hererogenous mixture for compatibilization of said polymeric fibers and said polymeric backing, said compatibilizing agent comprises a compatibilizing amount of a mixture of:
- a maleic anhydride modified poly(ethylene-co-vinyl acetate); and
- a poly(ethylene-co-vinyl acetate) resin modifier, containing between about 9% and 36% vinyl acetate; and
- heating said granulated scrap in admixture with said compatibilizing agent to form a substantially homogeneous thermoplastic blend.
Parent Case Info
This application is a Continuation of application Ser. No. 08/284,169 filed Aug. 2, 1994, now abandoned which application is a divisional of application Ser. No. 08/114,013 filed Aug. 30, 1993 (abandoned).
US Referenced Citations (44)
Foreign Referenced Citations (8)
Number |
Date |
Country |
2425751 |
Dec 1975 |
DEX |
3816894 |
Nov 1989 |
DEX |
54-117579 |
Sep 1979 |
JPX |
119821 |
Jul 1983 |
JPX |
60-185823 |
Sep 1985 |
JPX |
60-206868 |
Oct 1985 |
JPX |
60-219016 |
Nov 1985 |
JPX |
63-057355 |
Mar 1988 |
JPX |
Non-Patent Literature Citations (6)
Entry |
March 1988, "Soviet Technology Alert" Carpets from Plastic Waste. |
Jul. 1992, "Midwest Retailer" Carpet Recycling is Here?. |
R. Malloy et al., "Reclamation of Automotive Carpet Scrap" Mar. 29, 1992. |
Wagner, R. H., "A New Technology for Recycling Carpet Waste" Jul. 1978 Chemiefasern/Textilindustrie:. |
"Watzl, A Recycling of Textile Waste into Nonwovens Products" May 1992, Int. Textile Reports. |
"Reclamation of Mixed Textile" RD 19524 Jul. 10, 1980 Disclosed by Ryburn foam, Ltd. waste. |
Divisions (1)
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Number |
Date |
Country |
Parent |
114013 |
Aug 1993 |
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Continuations (1)
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Number |
Date |
Country |
Parent |
284169 |
Aug 1994 |
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