Method and apparatus of bonding superposed sheets of polymeric m

Details Method and apparatus of bonding superposed sheets of polymeric m Method and apparatus of bonding superposed sheets of polymeric m

1976-06-11

1978-01-17

Drummond, Douglas J.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

219121LM, 350190, B29C 1902, B23K 900, G02B 306

Patent

active

040690806

ABSTRACT:
A cylindrical lens system is used to focus a laser beam into a line upon thermoplastic sheets in their area of contact thereby linearly welding the sheets together. By this method flattened thermoplastic tubing may be converted into bags with either straight or curved linear seals.

REFERENCES:
patent: 2705523 (1955-04-01), Hasselquist
patent: 3534462 (1970-10-01), Cruickshank et al.
patent: 3560291 (1971-02-01), Foglia et al.
patent: 3835912 (1974-09-01), Kristensen

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