Method and device for welding superimposed strips of thermoplast

Details Method and device for welding superimposed strips of thermoplast Method and device for welding superimposed strips of thermoplast

1979-01-15

1980-10-14

Wityshyn, Michael G.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156157, 156502, 156580, 228112, 228 2, B29C 2708, B65H 6906

Patent

active

042279496

ABSTRACT:
A device for friction welding together two plastic strips which provides a weld having a strength approaching that of the strips. Movable friction jaws are oscillated on axes perpendicular to the plane of and through the strips with the result that the frictional motion is greatest in the middle of the welding zone and decreases almost to zero toward the ends of the welding zone.

REFERENCES:
patent: 3442203 (1969-05-01), Kobiella
patent: 3469300 (1969-09-01), Nagin
patent: 3734383 (1973-05-01), Ritter et al.
patent: 3873387 (1975-03-01), Schoening
patent: 3920504 (1975-11-01), Shoh et al.
patent: 4119449 (1978-10-01), Gould et al.
patent: 4154641 (1979-05-01), Hutton

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