Title:
PROCESSES FOR RECYCLING CARPET AND PRODUCTS OF SUCH PROCESSES
Document Type and Number:
WIPO Patent Application WO/2013/066559
Kind Code:
A3
Abstract:
Methods for the recycling of carpet are disclosed that produce clean face fiber suitable for industrial use. The methods allow the recovery of face fiber material, for example a polyester or a polyamide, from carpets that includes a face fiber material and a backing material, and include the steps of heating the carpet to a temperature lower than the melting point of the face fiber material, but higher than the initial thermal decomposition temperature of the backing material, for a time and at a temperature sufficient to thermally decompose, pyrolyze, or oxidize at least a portion of the backing material, rendering the backing material friable, that is more friable than the untreated backing; and applying mechanical force to the carpet so as to liberate the friable backing material from the face fiber material.
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Inventors:
BORK JOSEPH E (US)
PASPEK STEPHEN C (US)
SCHROEDER ALAN F (US)
HEISE WILLIAM H (US)
PASPEK STEPHEN C (US)
SCHROEDER ALAN F (US)
HEISE WILLIAM H (US)
Application Number:
PCT/US2012/058828
Publication Date:
September 26, 2013
Filing Date:
October 05, 2012
Export Citation:
Assignee:
EASTMAN CHEM CO (US)
International Classes:
C08J11/04; B29B17/02; C08J11/08; D01B9/00
Domestic Patent References:
| WO2000010738A1 | 2000-03-02 |
Foreign References:
| JP2006116298A | 2006-05-11 | |||
| DE4409335A1 | 1994-09-29 | |||
| JP2003164827A | 2003-06-10 | |||
| US4345039A | 1982-08-17 | |||
| JP2004168023A | 2004-06-17 |
Other References:
A.SEKIGUCHI, O.TERAKADO AND M.HIRASAWA: "NYLON RECOVERY FROM CARPET WASTES THROUGH THE PYROLYSIS UNDERTHE PRESENCE OF ZnO AND THE MILLING BY A METALLIC ROLLING MACHINE", 7 October 2011 (2011-10-07), pages 1 - 2, XP002688213, Retrieved from the Internet [retrieved on 20121128]
Attorney, Agent or Firm:
PHAN, Nhat, D. (P.O. Box 748Alexandria, VA, US)
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