RF-sealable packaging containers

Details RF-sealable packaging containers RF-sealable packaging containers

1988-08-31

1990-01-23

Marcus, Stephen

Flexible bags

With closure

Closure within bag

220359, B65D 3322

Patent

active

048954578

ABSTRACT:
Packaging containers which are closed, except for a pinch-type filling valve or filling-opening, are provided with an RF-sealable polymer, at least in the valve or opening, in order to be able to seal the valve or opening using RF frequency. Preferably, polymers which are sealable using MW energy are used, including, preferably, carbon monoxide-containing ethylene polymers.

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patent: 4557377 (1985-12-01), Maloney
patent: 4600614 (1986-07-01), Lancaster et al.
patent: 4601948 (1986-07-01), Lancaster et al.
patent: 4637199 (1987-01-01), Steck et al.

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