Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1976-07-22
1978-07-25
Weston, Caleb
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
156293, 156306, 156322, B29F 304, C09J 500
Patent
active
041027264
ABSTRACT:
Rigid thermoplastic articles having sections of different thickness are extrusion welded together, the part of the thicker section to be contacted by the extruded bead being preheated before being thus contacted, to a temperature higher than that of the thinner section. The thicker section may be heated above its softening point, e.g. by the tip of the extruder, while the thinner section remains below its softening point until contacted by the extruded bead. The method is useful for welding thin sectioned profile extruded board to thicker sectioned header pipes during manufacture of heat exchangers such as solar panels.
REFERENCES:
patent: 3008862 (1961-11-01), Haine et al.
patent: 3008863 (1961-11-01), Morris et al.
patent: 3279971 (1966-10-01), Gardnener
patent: 3580789 (1971-05-01), Wenzel
patent: 3740295 (1973-06-01), Brown
Imperial Chemical Industries Limited
Weston Caleb
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