Method of making spliceable sheet material

Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor

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1563043, 1563069, B44C 117, B29C 6500, C09J 510

Patent

active

047326352

ABSTRACT:
Heat-sealable sheet material for use in the fabrication of lapped-seam membranes. In a presently preferred construction, linear low density polyethylene film is adhered to one lateral border of cured polymerized EPDM composition; preferably the adhesive is protected with a removable liner, e.g., a polyester film until lapped-seam splicing is to be carried out. A transfer tape based on thermoplastic heat-sealable adhesive carried by a strippable liner also constitute part of the invention. The transfer tape is advantageously applied to a sheet of uncured EPDM compound and the resultant assembly subjected to heat and pressure to cure the compound and bond the heat-sealable adhesive firmly thereto.

REFERENCES:
patent: 3650874 (1972-03-01), Job et al.
patent: 4061516 (1977-12-01), George et al.
patent: 4398982 (1983-08-01), Witerski et al.
Polysar Progress, Sep.-Oct., 1983, pp. 1, 4.

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