RF-sealable packaging containers

Details RF-sealable packaging containers RF-sealable packaging containers

1987-04-27

1988-11-29

Coan, James F.

Package making

Methods

Filling preformed receptacle and closing

53479, 53DIG2, 1562744, 219 1041, 219 1053, 219 1081, B65B 702

Patent

active

047871946

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.

REFERENCES:
patent: 3403064 (1968-09-01), Bellamy
patent: 3725189 (1973-04-01), Gidge
patent: 4268338 (1981-05-01), Peterson
patent: 4339295 (1982-07-01), Boretos et al.
patent: 4637199 (1987-01-01), Steck et al.
patent: 4704509 (1987-11-01), Hilmersson et al.
"The Journal of Microwave Power and Electromagnetic Energy" vol. 22, No. 3, 1987.

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