Viscoelastic rebond polyurethane foam structure
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United States of America Patent
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N/A
Issued Date -
May 18, 2006
app pub date -
Nov 12, 2004
filing date -
Nov 12, 2004
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A rebond polyurethane foam structure is formed by mixing shredded particles of polyurethane foam wherein at least 20% by weight of such particles comprise particles of viscoelastic polyurethane foam. The foam particles are wetted with a liquid prepolymer binder that is cured when the wetted admixture is compressed at a compression ratio of at least about 3. Despite the small viscoelastic foam particle size and the effects of compression and binder curing, the resulting polyurethane foam structure surprisingly has a viscoelastic (slow recovery) character.
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Family
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Cited Art Landscape
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