Biodegradable cushioning product
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United States of America Patent
Stats
-
Dec 13, 1994
Grant Date -
N/A
app pub date -
Apr 16, 1992
filing date -
Apr 16, 1992
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
This invention relates to a biodegradable foam product and composed of paper fibers or other cellulosic biodegradable material with a superabsorbent polymer and shaped into any desired shape and size and to processes for making same. The foam product is made by blending fibers with up to 25% by weight of a superabsorbent polymer, adding water to the blend allowing it to expand by letting the superabsorbent polymer soak up excess water and drawing off water. Upon drying, the foam product gives off water and the polymer shrinks to its original size leaving voids between the fibers while maintaining the expanded dimensions. The foam product is a soft material especially suited as a cushioning material.
First Claim
Family
International Classification(s)
Cited Art Landscape
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