B - Operations – Transporting – 65 – D
Patent
B - Operations, Transporting
65
D
190/15, 190/43
B65D 81/20 (2006.01) B31C 3/00 (2006.01) B65D 3/22 (2006.01)
Patent
CA 1239353
ABSTRACT OF THE DISCLOSURE The invention is concerned with a pres- sure-resistant container having a body and metal ends which are high-frequency heat-sealed to the body. The body comprises a cylindrical body which serves as a content-protecting layer and an external shape- retention layer to keep the shape of the container, the content-protecting layer being constructed in such way that a laminate film including three layers comprising polyolefin/gas barrier/plastic is wound on a mandrel in such way that one side edge of the laminate film is folded back outward, with the poly- olefin layer inside, and bonded in such way that air bubbles are not entrapped thereunder, and the other edge side of the laminate film is superimposed on and bonded to the folded part in such way that air bubbles are not entrapped between them. The laminate film has a uniaxially stretched film of crystalline polymer on the outside of the plastic layer, and/or the shape- retention layer has a layer obtained by spirally winding a uniaxially stretched film of crystalline polymer, the metal ends being coated with at least one polymeric material selected from the group consisting of modified polyolefin, a mixture of modified poly- olefin and epoxy-phenol resin, and a mixture of modified polyolefin and epoxy-urea resin. The pres- sure-resistant container according to the invention is particularly useful for holding pressurized carbonated beverages.
482618
Igota Shoji
Sasaki Hitoshi
Ajinomoto Co. Inc.
Marcoux & Sher Swabey Mitchell Houle
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