Method of heat sealing employing a hot tack adhesive

Details Method of heat sealing employing a hot tack adhesive Method of heat sealing employing a hot tack adhesive

1977-07-01

1981-03-03

Gallagher, John J.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

73150A, 156 64, 156334, 428515, 526317, C09J 506

Patent

active

042539013

ABSTRACT:
Normally solid heat-activatable thermoplastic adhesives having improved hot tack strength at heat-seal temperatures are composed essentially of copolymers of ethylene with acrylic acid or methacrylic acid having standard melt flow values from about 1 to about 3 dg/min., and are especially useful as heat-seal coating or layer on substrates for packaging.

REFERENCES:
patent: 2614953 (1952-10-01), Anglada
patent: 2844956 (1958-07-01), Smith
patent: 3239370 (1966-03-01), Thomson et al.
patent: 3296856 (1967-01-01), Elias
patent: 3412606 (1968-11-01), Cooper et al.
patent: 3424631 (1969-01-01), Peacock
patent: 3520861 (1970-07-01), Thomson et al.
patent: 3520861 (1970-07-01), Thomson et al.
patent: 3600468 (1971-08-01), Bohme
Anon. "Flexible Packages"-Modern Packaging Encyclopedia vol. 41, No. 7A, pp. 1, 209-211, 213-217, 543-545 and 550, 7-1968.

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