Gasket material and method of making

Details Gasket material and method of making Gasket material and method of making

1974-04-25

1977-11-22

O'Connor, Edna M.

Illumination

Light source and modifier

With sealing means or artificial atmosphere

428280, F21S 1310

Patent

active

040597539

ABSTRACT:
Felt gasket material comprising polyethylene terephthalate fibers and suitable for use in luminaires is provided with improved compression recovery properties at elevated operating temperatures of the luminaire by heating the gasket material preferably in the range of 160.degree. C to 200.degree. C for a sufficient time to heat-set the fibers.

REFERENCES:
patent: T915001 (1973-10-01), Berkebile et al.
patent: 3359413 (1967-12-01), Waldbauer
patent: 3669931 (1972-06-01), Annis et al.
Properties of Polyethylene Suggest Peacetime Applications, Product Engineering, Mar. 1944, pp. 202, 203.

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