Method and apparatus for making transverse closure seals in comp

Details Method and apparatus for making transverse closure seals in comp Method and apparatus for making transverse closure seals in comp

1976-04-05

1977-04-12

Dost, Gerald A.

93 14, 93 33H, B31B 184

Patent

active

040168069

ABSTRACT:
High integrity transverse closure seals are made in thermoplastic, tubular bag stock by the application of a first, low temperature seal to one face of the bag stock followed by the application of a second, low temperature seal to the other face, in substantial registration with the first seal, to finalize the closure seal.
One of the seals is wider than the other and the narrower seal is positioned within the confines of the wider seal.

REFERENCES:
patent: 3837972 (1974-09-01), Schuster

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