Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor
Patent
1985-04-03
1987-02-17
Simmons, David
Adhesive bonding and miscellaneous chemical manufacture
Methods
Surface bonding and/or assembly therefor
156257, 264130, B31D 304
Patent
active
046437886
ABSTRACT:
A process for producing a tubular casing by folding a flat plastic sheet (1) into a tubular structure by a shaping former (6) as the sheet advances, and joining the meeting edges of the folded sheet to form the tubular casing, characterized by forming grooves (13) on one or both sides of the sheet along fold lines, coating a surfactant (12) on the sheet surface at least at the fold line portions of the sheet surface which are to be brought into contact with the shaping former, and then folding the sheet into a tubular structure by the shaping former.
REFERENCES:
patent: 2041974 (1936-05-01), Sloan
patent: 2244282 (1941-06-01), Bergstein
patent: 2900881 (1959-08-01), Barnes et al.
patent: 4242161 (1980-12-01), Hulten et al.
Mitsubishi Plastics Industries Limited
Simmons David
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