E - Fixed Constructions – 04 – D
Patent
E - Fixed Constructions
04
D
E04D 5/10 (2006.01) B32B 3/06 (2006.01) B32B 25/08 (2006.01) E04D 5/14 (2006.01)
Patent
CA 2075599
ABSTRACT OF THE DISCLOSURE A laminate seam of flat rubber sheet material for roofing comprising two layers (10 11) of the sheet material at least one layer of which is uncured or cured and one layer of a thermoplastic film (14) interposed between the overlapped edges (12,13) of the two layers of sheeting material to form a seam without the use of an adhesive. A method for covering a roof comprises the steps of applying a thermoplastic film (14) to the edge (12) of at least one layer of a flat rubber sheet material (10); applying a second layer of flat rubber sheet material (11) overlapping the thermoplastic film and the edge of the first flat rubber sheet material; heating the overlapped area to a temperature slightly above the peak melt temperature of the thermoplastic film; and, seaming the overlapped area under sufficient heat and pressure to provide an acceptable seam without the use of an adhesive.
Davis James A.
Lohr D. Frederick
Valaitis Joseph K.
Bridgestone Corporation
Swabey Ogilvy Renault
LandOfFree
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