Packaging material and a method for its manufacture

Details Packaging material and a method for its manufacture Packaging material and a method for its manufacture

B - Operations, Transporting

65

D

B65D 81/05 (2006.01) B29C 65/00 (2006.01) B65D 81/03 (2006.01) B65D 81/16 (1990.01)

Patent

CA 2121064

ABSTRACT OF THE DISCLOSURE Packaging material for self supporting packaging container walls can be given the desired flexural rigidity by being laminated to an inherently rigid material such as cardboard. Rigidity can also be achieved if two material layers are fixed at a given spacing from one another. According to the invention, this can be attained in that two material layers (1, 2) define aninterjacent chamber (4) which is filled with gas under pressure. The material is produced by the material layers (1, 2) being sealed to one another over a portion of their surface such that a chamber (4) is formed which is filled with,for example, air under pressure.

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