Recyclable thermoplastic moldable nonwoven liner for office partition and method for its manufacture
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United States of America Patent
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-
Feb 11, 2003
Grant Date -
N/A
app pub date -
Jan 6, 2000
filing date -
Jan 8, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A rigid thermoformable recyclable nonwoven liner material is formed by a wet process on a papermaking machine. The rigid thermoformable nonwoven liner material is intended to be laminated to a woven fabric and then thermomolded around a wooden panel to form an office partition. The wet-laying process may consist entirely of conventional steps. The fiber furnish includes polyester matrix fibers and co-polyester/polyester bicomponent binder fibers. The web of fibers coming off the papermaking machine is passed through a foam press, which applies a water-based medium having polyvinyl chloride binder dispersed therein. The web is dried, treated again with a water-based medium having polyvinyl chloride binder dispersed therein and then dried again. The final product can be molded in a wide range of temperatures ranging from 225.degree. to 300.degree. F.
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