Cement board having reinforced edges

Details Cement board having reinforced edges Cement board having reinforced edges

1988-12-27

1990-04-10

Bell, James J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Edge feature

428113, 428193, 428247, 428251, 428255, 428273, 428703, B32B 2302

Patent

active

049160044

ABSTRACT:
A cement board having bare surfaces and a mesh of reinforcing fibers underlying the top, bottom, and longitudinal edge surfaces is made continuously on an improved apparatus which comprises a pair of edger rails which slidably rest on a conveyor belt and define the path of the cement board being made on the conveyor belt and a means for folding and pressing outer margins of the bottom mesh into the edge surfaces and the top surface.

REFERENCES:
patent: 4002788 (1977-01-01), Lott
patent: 4351867 (1982-09-01), Mulvey et al.
patent: 4450022 (1984-05-01), Galer
patent: 4504335 (1985-03-01), Galer
patent: 4504533 (1985-03-01), Altenhoffer et al.
patent: 4617219 (1986-10-01), Schupack
patent: 4647496 (1987-03-01), Lehnert et al.

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