Method for welding polycarbonate by high frequency

Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor

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Details

1562724, 1562733, 1562744, 156289, B32B 3100

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active

054358787

ABSTRACT:
The invention relates to a method for welding thermoweldable sheets of which at least one is made of polycarbonate. The method is characterized in that the sheets to be welded are separated from the metal electrodes (4,5) of the high frequency press by means of a glass plate (2,3). Application to the fabrication of high density magnetic cards.

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patent: 4096015 (1978-06-01), Kawamata et al.
patent: 4678713 (1987-07-01), Lancaster et al.
"Dielectric Heating," Encylopedia of Polymer Science & Technology vol. 5, 1986.
Readdy, A. F., "Plastics Fabrication by Ultraviolet, Infrared, Induction, Dielectric, & Microwave Radiation Methods," Plastics, Picatinny Arsenal, Dover, N.J. 1972 p. 57.
Japanese Patent Gazette, Semaine D05, 11 mars 1981, section CH, classe A, p. 2, resume No. 06553, Derwent Publications Ltd. Londres, GB & JP-A-55 150321 (Sumitomo Bakelite K.K.) 22 Nov. 1980 voir resume (cite dans 1a demande).
Japanese Patent Gazette, semaine 8732, 23 Sep. 1987, section CH, classe A, p. 26, resume No. 87-225838/32, Derwent Publications Ltd., Londres, GB & JP-A-62 151 323 (Nippon Shigyo K.K.) 6 Jul. 1987.

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