Apparatus for sealing plastic films and the like

Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – With means applying wave energy or electrical energy...

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156275, 156583, B32B 1902, B29C 1906

Patent

active

040452727

ABSTRACT:
There is disclosed herein an improved method and apparatus for plastic sealing/bonding in which a wire element is positioned between two interfacing (plastic) pieces to be sealed/bonded together, wherein one or both of said pieces are wholly plastic or contain a plastic component. With the wire sandwiched and retained between the interfacing surfaces, a voltage is applied to the wire for a predetermined time to cause the wire to heat sufficiently to melt both interfacing surfaces and effect a fusion and formation of a bond.

REFERENCES:
patent: 2509439 (1950-05-01), Langer
patent: 2647072 (1953-07-01), Smith
patent: 2983306 (1961-05-01), Resnick
patent: 3299251 (1967-01-01), Zelnick
patent: 3428512 (1969-02-01), Cooper
patent: 3847712 (1974-11-01), Hubbard

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