Pasty heat-expandable filler composition and method of sound insulation by filling closed section of car body member
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United States of America Patent
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Issued Date -
Jun 29, 2006
app pub date -
Jun 2, 2004
filing date -
Jun 4, 2003
priority date (Note) -
Abandoned
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Abstract
An automatic injecting type paste form heat-blowing injection composition comprising a partially crosslinked rubber, an unvulcanized rubber, a crosslinking agent, a plasticizer, a thermoplastic resin, an epoxy resin and a latent curing agent thereof, and a blowing agent. This composition can be used in a injecting and soundproofing method comprising forming an insulation wall by heating and foaming of a injection composition in a closed section of an automobile body part having a closed section frame which is produced by press molding in a body welding step of an automobile manufacturing line, and it has a good anti-stringy property and suffers form less sagging during heating and foaming.
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