Unsupported shaped sound barrier component

Details Unsupported shaped sound barrier component Unsupported shaped sound barrier component

1982-12-20

1984-06-05

McCamish, Marion

Stock material or miscellaneous articles

Structurally defined web or sheet

Nonplanar uniform thickness material

428131, 428187, 428220, 181294, 524423, 524432, 524586, B32B 700

Patent

active

044528418

ABSTRACT:
A shaped sound barrier component comprising a thermoplastic member highly loaded with barium sulfate (more than 200 to about 400 parts) and zinc oxide (1 to 500 parts). Preferably the thermoplastic contains 20 to 50 parts of chopped fibers per 100 parts of said thermoplastic although larger amounts can be used, for instance a 100 parts where the usage is severe.

REFERENCES:
patent: 2480008 (1949-08-01), Anderson
patent: 3639529 (1972-02-01), Mackenzie, Jr.
patent: 4303723 (1981-12-01), Oliveira
Katz & Milewski, Handbook of Fillers and Reinforcements for Plastics, 1978, pp. 59-65.

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