Method of fabricating polymer-coated fabric outside corner piece

Details Method of fabricating polymer-coated fabric outside corner piece Method of fabricating polymer-coated fabric outside corner piece

1987-07-30

1989-01-24

Weston, Caleb

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156211, 156245, 156256, 156258, 52 58, 52287, 52288, 52631, B32B 3104

Patent

active

047999861

ABSTRACT:
A method of fabricating polymer-coated, fabric corner members for the integrated enclosures provided for projecting products such as air conditioners on unitary roof membranes. The corners have vertical walls forming a corner, comprising forming a first generally rectangular membrane segment with a side split part way, forming a second segment with a triangular-shaped corner portion, spreading the split edges of the first segment with an elongate male die part, placing the second segment over the male die part, and utilizing an elongate female die part having flat welding edges to retain the marginal edges of the second segment in engagement with the edges of the first segment contiguous to the split, and applying energy to heat-weld the lapped edges of the first and second segments. The corner piece formed is placed in position with portions of the first segment, forming vertical wall covers folded to form a corner and the remaining portions of the segment and the second segment lying flat in the general plane of the roof membrane. The flat lying portions of the corner piece are welded to the roof membrane, spanning strips join the vertical wall portion and have flat extensions which are likewise welded to the roof membrane.

REFERENCES:
patent: 3942295 (1976-03-01), Schacht
patent: 4603517 (1986-08-01), Lyons
patent: 4652321 (1987-03-01), Greko
patent: 4668315 (1987-03-01), Brady et al.
patent: 4700512 (1987-10-01), Laska

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