Abstract: A laminate characterized by consisting of at least 4 layers and having (A) a seal layer which is a polypropylene having a melting point of at least 160.degree. C. as the first layer which is the innermost layer, (B) an adjacent layer consisting of a mixture of 20 to 90% by weight of a polypropylene and 80 to 10% by weight of a 4-methylpentene-1 resin as the second layer, (C) an intermediate layer consisting of a polypropylene having a melting point of at least 160.degree. C. and a melt index of 0.5 to 30 as the third layer and (D) a substrate layer consisting of a polypropylene having a melting point of at least 160.degree. C. and a melt index of 0.01 to 4 as the outermost layer, wherein the melt index of the seal layer (A) is at least 1.

Abstract: A sealed container obtained by forming into a container a sheet comprising (A) a polymer of three-component system of bisphenol A, diphenyl carbonate and 1,10-decanedicarboxylic acid, (B) polypropylene and (C) ethylene-vinyl alcohol copolymer or polyamide obtained by the polycondensation reaction of m-xylylenediamine with adipic acid so that these (A), (B) and (C) are in order of (A)-(B)-(C)-(B) with (A) as an innermost layer of the container and sealing the container by a lid having gas barrier properties. This container is excellent in preservability and sealability and does not spoil the flavor of various foods which are contained therein.

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 10-100 .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.

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.