Thermoplastic welding

Details Thermoplastic welding Thermoplastic welding

1994-05-16

1996-01-02

Hoang, Tu

Electric heating

Inductive heating

With heat exchange

219645, 1562742, 1562746, 428220, H05B 610

Patent

active

054810914

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.

REFERENCES:
patent: 5313034 (1994-05-01), Grimm et al.
"Resistance Welding of Graphite Polyetheretherketone Composites", ANTEC 89, pp. 493-495.

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