Fire-resistant article and method of manufacture

Details Fire-resistant article and method of manufacture Fire-resistant article and method of manufacture

1986-11-25

1987-09-22

Van Balen, William J.

Stock material or miscellaneous articles

Sheet including cover or casing

Foamed or expanded material encased

252 62, 264109, 264122, 264333, 4283137, 428446, 428532, 428920, E04B 174, E04B 228, B32B 326, B28B 300

Patent

active

046954945

ABSTRACT:
A fire-resistant article, for example, a fire door core comprising a major amount of expanded perlite in compressed form, an adhesive material, the major portion of which is starch, and preferably glass fibers, and a method for making the article by dry-mixing the ingredients substantially completely before water is added for the purpose of developing the adhesive characteristics of the starch.

REFERENCES:
patent: 3408316 (1968-10-01), Mueller et al.
patent: 3904539 (1975-09-01), Ruff
patent: 3952830 (1976-04-01), Oshida et al.
patent: 4159302 (1979-06-01), Greve et al.
patent: 4297311 (1981-10-01), Sherman et al.
patent: 4343127 (1982-08-01), Greve et al.

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