Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1974-02-01
1976-05-11
Powell, William A.
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
156263, 156304, 156504, 156507, 156518, 156539, B65H 6906
Patent
active
039560473
ABSTRACT:
Improvement in the process and apparatus of Application Ser. No. 236,766 filed Mar. 21 1971, now U.S. Pat. No. 3,769,124. There is described a technique for butt welding a trailing end of one roll of thermoplastic film or sheet material to the leading edge of another roll of such material by vertically superimposing the trailing and leading portions of the two rolls, aligning the lateral edges of such portions over a significant distance sufficient to insure angular alignment of the two rolls at the butt weld. Severing the two portions along a coincident transverse line, heating the severed portions to an extent sufficient to weld such together, and bringing the heated transverse edges of the two portions together while maintaining lateral edge alignment of said portions, whereby butt welding such into a continuous sheet.
REFERENCES:
patent: 2379500 (1945-07-01), Steffens
patent: 2516602 (1950-07-01), Snyder
patent: 2613042 (1952-10-01), Dice, Jr.
patent: 2988134 (1961-06-01), Nissel
patent: 2998204 (1961-08-01), Walsh
patent: 3384527 (1968-05-01), Fener
Gilman Michael G.
Huggett Charles A.
Leitten Brian J.
Mobil Oil Corporation
Powell William A.
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