Thermoplastic bag with metallized end gusset

Details Thermoplastic bag with metallized end gusset Thermoplastic bag with metallized end gusset

1990-08-28

1991-12-24

Marcus, Stephen

Flexible bags

End structure

Seamless

383106, 383107, 383116, 383120, 229 8709, 493187, B65D 3008

Patent

active

050746758

ABSTRACT:
The present invention is a bag of thermoplastic film material which includes a top wall and a bottom wall connected by first and second sidewalls and having an open end and a closed end. The closed end includes an end gusset wherein there are two lateral edge heat seals. The lateral edge heat seals are formed by a four-fold gusset. The outer surface of one of the folds can be provided with a metallic surface whereas the outer surface of a mating fold in the gusset possesses a non-metallic surface. As a result of the present invention, a metallized end-fold gusset can be provided with a capability of heat sealing the lateral edges in the metallized area.

REFERENCES:
patent: 2047980 (1936-07-01), Olm et al.
patent: 2048213 (1936-07-01), Grogan
patent: 3182893 (1965-05-01), Bremkamp
patent: 3269278 (1966-08-01), Olstad
patent: 3285497 (1966-11-01), Stillman et al.
patent: 3355303 (1967-11-01), Meyers
patent: 3386645 (1968-06-01), Powell
patent: 3402052 (1968-09-01), Walker

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