Seal for packages capable of thermoplastic sealing and means for

Details Seal for packages capable of thermoplastic sealing and means for Seal for packages capable of thermoplastic sealing and means for

1974-11-20

1977-01-04

Drummond, Douglas J.

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

Presses or press platen structures, per se

156583, B32B 3100, B30B 1534

Patent

active

040010759

ABSTRACT:
A seal for packages formed from materials having thermoplastic surfaces and means for providing such seal. The seal being substantially perfect and the means providing such seal consistently.

REFERENCES:
patent: 2441817 (1948-05-01), Huff
patent: 2496609 (1950-02-01), Antwerpen
patent: 2589756 (1952-03-01), Waters
patent: 2610137 (1952-09-01), Williamson et al.
patent: 3322603 (1967-05-01), Grasso
patent: 3478485 (1969-11-01), Hechenlettner

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