Thermoplastic welding

Details Thermoplastic welding Thermoplastic welding

1992-01-15

1994-05-17

Reynolds, Bruce A.

Electric heating

Capacitive dielectric heating

Bonding

219553, 219777, 219634, 1562742, 1562746, 428220, B23K 1302

Patent

active

053130340

ABSTRACT:
A process for obtaining long, continuous, thermoplastic welds on large structures. A series of tabs are used in pairs and especially in alternating, overlapping pairs to obtain resistance heating of a strip material placed in the bond line. The resistance of the tabs is less than that of the strip material. Conducting braid-tubes afford continuous welding when the bond line is curved. Alternatively, an electromagnetic field is used to take advantage of the induction heating. A wide susceptor is used to weld a current conducting substrate while avoiding bulk heating of the substrate. The unexpected property of current-conducting braid-tube susceptors, in which induction heating takes place at the center rather than at the edges of a flattened braid-tube susceptor, is used to obtain long continuous curved welds.

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Eveno, E. et al "Resistance Welding of Graphite Polyetneretnerketone Composites", Antec '89 pp. 493-495.

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