JP2019181927A5 - - Google Patents

Claims (13)

A laminate for a molded container including a metal foil layer and an outer resin film layer laminated on the outer surface of the metal foil layer on both sides of the metal foil layer.
The outer resin film layer has a melting point of 155 ° C. or higher and a first resin film layer containing 50% by mass or more of a random copolymer containing propylene as one of the copolymerization components or a polymer of propylene alone. It comprises a resin composition containing a first elastomer-modified olefin resin having a crystal melting energy of 50 J / g or more and a second elastomer-modified olefin resin having a melting point of 135 ° C. or higher and a crystal melting energy of 30 J / g or less. It has a multi-layer structure of two or more layers having at least a second resin film layer.
The first elastomer-modified olefin resin and the second elastomer-modified olefin resin are composed of an elastomer-modified homopolypropylene resin and / or an elastomer-modified random copolymer, respectively.
A laminate for a molded container in which the total value of the content of the first elastomer-modified olefin resin and the content of the second elastomer-modified olefin resin in the second resin film layer is 50% by mass or more. The laminate for a molded container according to claim 1 , wherein the content of the second elastomer-modified olefin resin in the outer resin film layer is 1 to 50% by mass. The laminate for a molded container according to claim 1 or 2 , wherein the content of the first elastomer-modified olefin resin in the outer resin film layer is 49 to 98% by mass. In the outer resin film layer, the content of the olefin elastomer is 1 to 30.
The laminate for a molded container according to any one of claims 1 to 3 , which is by mass%. The laminate for a molded container according to any one of claims 1 to 4 , wherein the glossiness of the surface of the outer resin film layer is 0.5 to 12%. The elastomer component of the first elastomer-modified olefin resin and the second elastomer-modified olefin resin is at least one of ethylene-propylene elastomer, ethylene-1-butene elastomer, and ethylene-propylene-1-butene elastomer, respectively. The laminate for a molded container according to any one of claims 1 to 5 . The molding according to any one of claims 1 to 6 , wherein the olefin-based elastomer is at least one of ethylene-propylene elastomer, ethylene-1-butene elastomer, and ethylene-propylene-1-butene elastomer. Elastomer for containers. The laminate for a molded container according to any one of claims 1 to 7 , wherein the outer resin film layer further contains at least one of inorganic fine particles, organic fine particles, and a slip agent. The laminate for a molded container according to any one of claims 1 to 8 , wherein the second elastomer-modified olefin resin has two or more crystallization peaks in the differential scanning calorimetry graph. A plurality of outer resin film layers are laminated on the outer surface of the container on both sides of the metal foil layer, and the outermost of the plurality of outer resin film layers constitutes the outer surface layer. The laminate for a molded container according to any one of claims 1 to 9 . A printing layer is formed between the metal foil layer and the outer resin film layer, or a coloring component is added to the outer resin film layer, whereby a predetermined display is given on the surface of the outer resin film layer. Or the laminate for a molded container according to any one of claims 1 to 10 , which is decorated. A molded container obtained by molding the laminate for a molded container according to any one of claims 1 to 11 into a cup shape and having a flange on the peripheral edge of the opening. A package having a lid joined to the flange of the molded container according to claim 12 filled with the contents so as to cover the opening of the molded container.