- 专利标题: Processes for recycling carpet and products of such processes
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申请号: US14485175申请日: 2014-09-12
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公开(公告)号: US09757875B2公开(公告)日: 2017-09-12
- 发明人: Joseph E. Bork , Stephen C. Paspek, Sr. , Alan F. Schroeder , William H. Heise
- 申请人: Shaw Industries Group, Inc.
- 申请人地址: US GA Dalton
- 专利权人: Shaw Industries Group, Inc.
- 当前专利权人: Shaw Industries Group, Inc.
- 当前专利权人地址: US GA Dalton
- 代理机构: Phan Law Group PLLC
- 主分类号: B29B17/02
- IPC分类号: B29B17/02 ; B02C19/18 ; C08J11/08 ; C08J11/04 ; D01B9/00 ; C08G63/183 ; C08G69/02 ; B29K105/06 ; B29L31/00 ; B29K67/00 ; B29K77/00
摘要:
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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