Magnetic, hot-melt adhering soundproofing sheet

Details Magnetic, hot-melt adhering soundproofing sheet Magnetic, hot-melt adhering soundproofing sheet

1988-03-29

1989-05-23

Herbert, Thomas J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Physical dimension specified

428349, 428457, 428480, 428489, 428900, C09J 702, B32B 1104, B32B 1508

Patent

active

048330183

ABSTRACT:
Bubble-formation when melting a magnetically adhering bituminous soundproofing sheet provided with a hot-melt adhesive layer (4) onto an automobile body sheet metal at temperatures of about 190.degree. C., is prevented by integrating a flexible, temperature-resistant foil (5) into the soundproofing sheet. For soundproofing sheets up to 3 mm thick, the spacing between the hot-melt layer (4) and the foil (5) preferably should not exceed 1 mm.

REFERENCES:
patent: 3243374 (1966-03-01), Gillard
patent: 4559252 (1985-12-01), Motoda et al.
patent: 4636414 (1987-01-01), Tajima et al.

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