Process and apparatus for the manufacture of fiber-reinforced hy

Details Process and apparatus for the manufacture of fiber-reinforced hy Process and apparatus for the manufacture of fiber-reinforced hy

1979-11-21

1982-08-17

Cannon, James C.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Plaster board making

106 99, 156166, 156231, 156246, 156540, 162157R, 162210, 162212, 264 87, 264257, 264258, 264333, 428286, 428288, 428703, B28B 130, B28B 312, B28B 502, B32B 1302

Patent

active

043448046

ABSTRACT:
The present invention relates to a continuous process for manufacturing articles comprised of fiber-reinforced hydraulically bound material. A layer of the fiber-reinforcing and hydraulically bindable materials are placed on a first endless carrier while a second similar layer is formed on a second endless carrier. The layer formed on the second carrier is deposited on the layer formed on the first carrier by reversing the second carrier and the composite layer formed as a result is thereafter given the desired shape and is hardened.
A number of fibrous network structures are used with the hydraulically bindable material and the two are formed into a layer with the networks distributed in it. Water is removed from that layer by suction, while on the second carrier a number of fibrous networks are likewise supplied to be formed into a layer comprised of the hydraulically bindable material with the networks distributed in it and water is also removed by suction from this layer.
The invention is applied in the manufacture of building materials used, for instance, to replace asbestos-cement sheets.

REFERENCES:
patent: 3591395 (1971-07-01), Lonsveld et al.
patent: 4085001 (1978-04-01), Fukuwatari et al.
patent: 4194946 (1980-03-01), Ootani et al.
patent: 4242407 (1980-12-01), Bijen

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