Process for preparing carpet underlay
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United States of America Patent
Stats
-
Jan 15, 1991
Grant Date -
N/A
app pub date -
Jul 26, 1989
filing date -
Jul 26, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A process of carding several different types of fibers into webs, combining the webs by layering alternate types and needle punching the combined webs into a tightly felted sheet impregnating the sheet on both sides with a synthetic rubber latex and curing the latex in place by baking the impregnated sheet.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
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