Sheet material with adhesive
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United States of America Patent
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Feb 23, 1999
Issued Date -
N/A
app pub date -
Nov 3, 1997
filing date -
Apr 19, 1994
priority date (Note) -
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status (Latency Note)
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Abstract
A two-layer material suitable for use as a barrier layer for a cushion sock in a foam-in-place process is formed by bonding a discontinuous adhesive layer to a pinhole-free, lubricant-free barrier layer. The discontinuous adhesive layer has a melting temperature higher than 180 degrees Fahrenheit. A foam cushion is molded adjacent the cushion sock by first attaching a barrier layer to the cushion sock, and vacuum drawing the cushion sock attached to the barrier layer over a mold. The cushion sock and the barrier layer are then heated to a temperature no higher than 400 degrees Fahrenheit to bond the cushion sock and the barrier layer together.
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