Sound absorbing heat shield with perforate support layer

Details Sound absorbing heat shield with perforate support layer Sound absorbing heat shield with perforate support layer

1991-01-10

1993-03-23

Robinson, Ellis P.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including aperture

428 74, 428 75, 428137, 428263, 428432, 428156, 428920, 428 99, 428124, 428174, 428182, 296 393, 181211, 181284, 181290, 181292, B32B 324

Patent

active

051962535

ABSTRACT:
A heat shield (1) includes a support layer (2) that is perforate only in predetermined partial areas (6, 7, 8) and comprises an insulation layer (3) that has a protective coating (4, 5) on both sides thereof. In particular, flange areas (6), attachment areas (8), and areas of bent or angular deformities (7) are free of perforations. A protective coating (5) on a side of the insulation layer facing the support layer has a thickness of less than 30 .mu.m and can be constructed of a thin aluminum foil or a sprayed or deposited metalized coating. Preferably, the protective coating has fine pores.

REFERENCES:
patent: 2116771 (1938-05-01), Seaman
patent: 2576698 (1951-11-01), Russum
patent: 3021915 (1962-02-01), Kemp
patent: 4369744 (1981-01-01), Kubozuka
patent: 4609067 (1986-09-01), Gonwa

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