Soundproofing material for vehicle

Details Soundproofing material for vehicle Soundproofing material for vehicle

2006-02-17

2008-08-12

Donovan, Lincoln (Department: 2837)

Acoustics

Sound-modifying means

Sound absorbing panels

C181S290000, C181S296000

Reexamination Certificate

active

07410030

ABSTRACT:
A soundproofing material for vehicle having a laminated structure comprising two sound absorbing layers and an interlayer interposed therebetween, characterized in that the interlayer is formed by bonding and laminating on the respective side of an air-impermeable film made of a thermoplastic resin film having a thickness of from 7μ to 50μ heat-fusible films having a thickness of from 7μ to 50μ made of a thermoplastic resin film having a lower melting point than that of the air-impermeable film using a multi-layer inflation method and the soundproofing material is heat pressure-molded so that the heat-fusible film is melted to cause the sound absorbing layers to be bonded to the respective side of the air-impermeable film.

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