B - Operations – Transporting – 32 – B
Patent
B - Operations, Transporting
32
B
154/119, 154/140
B32B 27/32 (2006.01) B32B 3/06 (2006.01) E04C 2/24 (2006.01)
Patent
CA 1266608
-1- 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.
473653
Minnesota Mining And Manufacturing Company
Smart & Biggar
LandOfFree
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