Easily openable sealed container
AssigneeSumitomo Bakelite Co., Ltd.
InventorsSeigo Akazawa, Tadao Takagaki
Life of this patent
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Abstract
The present invention provides an easily openable sealed container consisting of a lid and a main body having a flange, wherein a sealing layer of the main body or a sealing layer of the lid has a number of microdents in the flange portion, the thickness of said sealing layer is 10-1000 .mu., said sealing layer and an adjacent layer contacting therewith have a lamination strength of 300-2,000 g/25 mm width, and said sealing layer and the lid or the main body are sealed in the flange portion at a strength larger than said lamination strength, as well as a process for producing said sealed container.
Claims11
An easily openable sealed container comprising:
- a lid and a main body having a flange portion;
- wherein
- the main body consists of a multilayer sheet comprising a sealing layer and an adjacent contacting layer and said lid consists of a lid comprising a sealing layer, the lamination strength between the sealing layer of the main body and the adjacent contacting layer is 300-2,000 g/25 mm width, said sealing layer of the main body has a thickness of 10-100.mu. and has a number of microdents in said flange portion on a whole surface or on a ring-shaped part of the surface, and being sealed with the lid in the flange portion at a strength larger than said lamination strength.
An easily openable sealed container comprising:
- a lid and a main body having a flange;
- wherein
- said lid consists of a multilayer sheet of at least two layers comprising a sealing layer and an adjacent contacting layer and said main body consists of a main body comprising a sealing layer, the lamination strength between the sealing layer of the lid and the adjacent contacting layer is 300-2,000 g/25 mm width, said sealing layer of the lid has a thickness of 10-100.mu., portions of the lid corresponding to a whole or part of the flange portion of the main body have a number of microdents, and the whole surface of the flange portion of the main body and the corresponding portion of the lid are heat sealed, after the main body has been filled with contents, at a strength larger than said lamination strength.
Dependencies are inferred from the claim text.