Invention Grant
US08518313B2 Process for enhancing compression set resistance of foamed copolyester compositions
失效
用于提高发泡共聚酯组合物的抗压缩变形性的方法
- Patent Title: Process for enhancing compression set resistance of foamed copolyester compositions
- Patent Title (中): 用于提高发泡共聚酯组合物的抗压缩变形性的方法
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Application No.: US13093180Application Date: 2011-04-25
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Publication No.: US08518313B2Publication Date: 2013-08-27
- Inventor: Peter Laszlo Szekely
- Applicant: Peter Laszlo Szekely
- Applicant Address: US DE Wilmington
- Assignee: E I du Pont de Nemours and Company
- Current Assignee: E I du Pont de Nemours and Company
- Current Assignee Address: US DE Wilmington
- Main IPC: B29C71/02
- IPC: B29C71/02
Abstract:
Disclosed herein is a process for heat treating a foamed copolyester thermoplastic sheet structure in order to achieve a sheet structure having a compression set resistance (as determined according to ISO 1856, 22 hours, 70° C., 30% compression) of less than 11%. Heat treating involves annealing followed by at least two cycles of pre-compression at approximately the annealing temperature.
Public/Granted literature
- US20120098158A1 PROCESS FOR ENHANCING COMPRESSION SET RESISTANCE OF FOAMED COPOLYESTER COMPOSITIONS Public/Granted day:2012-04-26
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