Vacuum packaging method

Details Vacuum packaging method Vacuum packaging method

B - Operations, Transporting

65

B

156/7

B65B 31/02 (2006.01) B65B 31/00 (2006.01)

Patent

CA 1126640

VACUUM PACKAGING METHOD Abstract of the Disclosure The invention relates to an improved vacuum packaging method which makes use of a novel laminated film as the packaging film. The laminated film is composed of a plas- tically deformable layer of a synthetic resin having a yield stress of more than 50 kg/cm2 at a temperature of 23°C. and an elongation of less than 30% at the elastic limit at a shaping temperature of 50 to 180°C, and an elastic layer of a synthetic resin having an elongation of more than 40% at the elastic limit at the shaping temperature. The film enables a tightly fitting package to be formed without any wrinkling or rupture, and without requiring a complicated procedure, equipment and apparatus. - 1 -

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