Stock material or miscellaneous articles – Sheets or webs edge spliced or joined
Patent
1991-08-08
1993-11-09
Robinson, Ellis P.
Stock material or miscellaneous articles
Sheets or webs edge spliced or joined
428 58, 428141, 428147, 428255, 428295, 428517, 428519, 428520, 428521, 525 97, B32B 308, C08L 5300, E04D 514
Patent
active
052601110
ABSTRACT:
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.
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Vol. 55 of Rubber Chem. Technol., p. 116, Rubber-Thermoplastic Compositions, Part V. Selecting Polymers for Thermoplastic Vulcanizates, by A. Y. Coran, R. P. Patel, and D. Williams.
Davis James A.
Lohr D. Frederick
Valaitis Joseph K.
Ahmad Nasser
Bridgestone Corporation
Robinson Ellis P.
Troy, Sr. Frank J.
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