Polymer film slitter-sealer apparatus and method

Details Polymer film slitter-sealer apparatus and method Polymer film slitter-sealer apparatus and method

1979-04-12

1981-03-31

Drummond, Douglas J.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156322, 156515, B32B 3100, B65C 925, B32B 3118

Patent

active

042591341

ABSTRACT:
Slitter-sealer, for slitting two layers of thermoplastic polymer film and sealing the slit edges of adjacent layers together, has a preheater for preheating the polymer film before slitting to reduce the required temperature at the slitter and improve sealing.

REFERENCES:
patent: 2781079 (1957-02-01), Ruby
patent: 3269278 (1966-08-01), Olstad
patent: 3660205 (1972-05-01), Taylor
patent: 4070222 (1978-01-01), Olson

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