JP2001310431A5 - - Google Patents

Claims (8)

  A composite film for easy opening packaging in which a first layer and a second layer are coextruded and laminated, wherein the first layer comprises a resin component (A) having a copolymer of polypropylene or propylene and other α-olefins And the second layer contains a resin component (B) having a mixture of polypropylene and a high-density polyethylene having a melting point of 120 ° C. or higher or a linear low-density polyethylene. the film.   The easy-open packaging composite according to claim 1, wherein the resin component (B) comprises 1 to 50% by weight of polypropylene and 99 to 50% by weight of high-density polyethylene having a melting point of 120 ° C or higher or linear low-density polyethylene. the film.   The composite film for easy-open packaging according to claim 1 or 2, wherein a base film is further laminated on the second layer. 4. The easy-open packaging composite film according to claim 1 , wherein the first layer has a thickness of 0.5 to 20 [mu] m.   A packaging container comprising a synthetic resin container bottom and a lid film, the contents of which can be hermetically sealed by heat sealing the lid film on the opening flange of the container bottom, The container bottom is made of polypropylene or a copolymer of propylene and other α-olefins, or a mixture of polypropylene and other thermoplastic resin, and the lid film is coextruded with the first and second layers. It is a laminated composite film, wherein the first layer contains a resin component (A) having a copolymer of polypropylene or propylene and other α-olefin, and the second layer has a melting point of 120 ° C. or higher. The easy-open packaging composite film containing the resin component (B) having a mixture with a high-density polyethylene or a linear low-density polyethylene, and the first layer of the lid film is A packaging container which is heat-sealed to the bottom opening ridge portion in a state of being filled with a container. The packaging container according to claim 5, wherein the resin component (B) is composed of 1 to 50% by weight of polypropylene and 99 to 50% by weight of high-density polyethylene having a melting point of 120 ° C or higher or linear low-density polyethylene . The packaging container according to claim 5 or 6 , wherein a base film is further laminated on the second layer of the lid material film. The packaging container according to claim 5, 6 or 7, wherein the film thickness of the first layer of the lid material film is 0.5 to 20 µm.