Container and method and device for producing same

Details Container and method and device for producing same Container and method and device for producing same

B - Operations, Transporting

29

C

18/535

B29C 49/14 (2006.01) B29C 49/00 (2006.01) B29C 49/02 (2006.01) B29C 49/54 (2006.01) B29C 51/08 (2006.01) B29C 51/34 (2006.01) B29C 55/30 (2006.01) B65D 1/16 (2006.01) B29C 43/36 (2006.01)

Patent

CA 1216719

ABSTRACT A container (30d) of polyethylene terephthalate or sim- ilar thermoplastic material has a container body (32d), a mouth portion (37d) and a central bottom part (34d). The central bottom part consists of chiefly amorphous and/or thermocrystallized material and forms a bulge directed towards the interior of the container. A ring- shaped or band-shaped standing surface (36d) is arranged adjacent the transition of the bottom part into the con- tainer wall (32d). Adjacent to the standing surface the container has a circumferential area of material (35d) which through stretching and/or reshaping has undergone flow and through heating has acquired built-in stresses which tend to contract it. The surrounding circum- ferential area of material prevents the inward bulge of the central bottom part from straightening out and/or turning inside out when the pressure in the container is increased and/or when the temperature of the con- tainer material is raised. The invention also relates to a method and a device for achieving the container.

415918

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