Anomalous-noise-suppressed roller
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United States of America Patent
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Issued Date -
Jun 14, 2007
app pub date -
Dec 7, 2006
filing date -
Dec 8, 2005
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
The present invention provides an anomalous-noise-suppressed roller having excellent durability and small thickness. The anomalous-noise-suppressed roller is formed of polyurethane foam, wherein the polyurethane foam is produced from a prepolymer derived from a caprolactone diol; a chain-extender formed of a 2-functional diol; and a cross-linking agent formed of a short-chain polyol having three or more functionalities; the cross-linking agent is employed in an amount of 10% by mass or more and less than 20% by mass, with respect to the total amount of the chain-extender and the cross-linking agent; the polyurethane foam exhibits a permanent compressive strain, as determined under 25% compression at 70.degree. C. for 22 hours, of 20% or less, and an Asker C hardness of 60 to 70.degree.; and the roller has a thickness of 4 mm or less.
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