Plastic article or earthenware shaping or treating: apparatus – Press forming means – press reshaping means – or vulcanizing... – Cooperating endless belts
Patent
1978-06-05
1981-04-21
Czaja, Donald E.
Plastic article or earthenware shaping or treating: apparatus
Press forming means, press reshaping means, or vulcanizing...
Cooperating endless belts
425407, 425446, B29J 510
Patent
active
042630070
ABSTRACT:
A technique is disclosed for heat treatment of fibrous mats, especially mats formed of mineral fibers such as glass and carrying a heat hardenable binder material, such as a thermosetting resin. The method and the equipment disclosed provide for continuous feed of the mat through a curing or treating oven having a plurality of heat treatment zones or areas. In one form of the method and equipment, the heat treatment in at least one zone is effected by circulation of a heated gas, such as air, through the mat in said zone, and the mat is also subjected to heat treatment in a localized area lying within said zone by passage of a second heated gas through the mat, the second heated gas having a pressure higher than that in the surrounding portions of said zone.
REFERENCES:
patent: 2997096 (1961-08-01), Morrison et al.
patent: 3096161 (1963-07-01), Morrison et al.
patent: 3865540 (1975-02-01), Loeffler
Battigelli Jean A.
Bouquet Francois
Czaja Donald E.
Hall James R.
Saint-Gobain Industries
Synnestvedt John T.
Synnestvedt Kenneth P.
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