Friction welded fastener system

Details Friction welded fastener system Friction welded fastener system

1984-12-12

1985-11-05

Wityshyn, Michael

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

24 90HA, 156580, 264 68, B29C 2708

Patent

active

045511896

ABSTRACT:
A friction welding fastener system is disclosed for fusing a thermoplastic material fastener to a substrate by heat of friction induced through the application of rotative and axial forces applied to the fastener. A cavity is formed inwardly of the bottom surface of the thermoplastic base member and a heat activated adhesive material having a bonding affinity for both the base material and the substrate material is inserted into the cavity to form a layer having a thickness equal or greater than the thickness of the base member. The base member is rotated with sufficient rotative and axial forces to cause the heat activated adhesive layer to adhere to the substrate.

REFERENCES:
patent: 2470963 (1949-05-01), Weyl
patent: 3438825 (1969-04-01), Fidler
patent: 3580793 (1971-05-01), Hewitt
patent: 4250596 (1981-02-01), Hara et al.
patent: 4477307 (1984-10-01), Cearlock et al.

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