Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1978-07-21
1981-09-15
Dawson, Robert A.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
156157, 15624411, 15624422, 156272, 156292, 156322, 156499, 156500, 156574, 264248, 264DIG80, 427256, 427284, 428 57, 428161, 428177, 428189, 428198, B32B 3116, B32B 3130
Patent
active
042895529
ABSTRACT:
A method of welding together a pair of thermoplastic sheets each including pposite surfaces bridged by a terminal edge defining an edge portion by placing the edge portion of a first overlapping of the pair of sheets into overlapping relationship with a second edge portion of a second overlap of the pair of sheets and with the terminal edges thereof spaced a predetermined distance from each other and in generally parallel relationship to each other, applying a continuous linear strip of plastic welding material in thermoplastic state progressively and in generally parallel relationship to the terminal edges along surfaces of the overlapping and overlapped edge portions and in bridging relationship to the terminal edge of the overlapping edge portion, performing the overlapping in the absence of overlapping any portion of the overlapping first sheet upon itself and in the absence of overlapping any portion of the overlapped sheet upon itself, and applying heat to those surfaces of the overlapped and overlapping edge portions through which the plastic welding material is applied prior to the application of the latter to the edge portions.
REFERENCES:
patent: 3008862 (1961-11-01), Haine et al.
patent: 3578543 (1971-05-01), Cook et al.
patent: 3700520 (1972-10-01), Hielema
patent: 3806388 (1974-04-01), Contini
patent: 3962016 (1976-06-01), Alfter et al.
patent: 4135957 (1979-01-01), Voller
patent: 4200676 (1980-04-01), Caponigro et al.
Dawson Robert A.
GFA-Gesellschaft fur Flachenabdichtung mit beschrankter Haftung
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