Method of making tamperproof bag closure

Details Method of making tamperproof bag closure Method of making tamperproof bag closure

1982-04-27

1984-08-07

Coan, James F.

Manufacturing container or tube from paper; or other manufacturi

Container making

Pliable container

493330, 493331, B31B 162

Patent

active

044641583

ABSTRACT:
A tamperproof bag is provided with closure means comprising a strip of microcapsules containing an adhesive core enclosed by a shell adapted to be broken by pressure application to release the adhesive contents. The microcapsules are applied to the bag by means of a binder system or by depositing them onto an adhesive tie-coat previously applied to the bag.

REFERENCES:
patent: 2046975 (1936-07-01), Shaw et al.
patent: 2248255 (1941-07-01), Staude
patent: 3875074 (1975-04-01), Vassiliades et al.
patent: 3886084 (1975-05-01), Vassiliades
patent: 4134322 (1979-01-01), Lillibridge

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