Molding packaging material and molded case
A molding packaging material 1 of this invention contains a biaxially stretched polyamide film layer 2 as an outer layer, a thermoplastic resin layer 3 as an inner layer, and a metal foil layer 4 disposed between the both layers 2 and 3 , in which a biaxially stretched polyamide film in which when the fracture strength of the film is defined as “X” and the fracture strain of the film is defined as “Y”, the X/Y value is 230 MPa to 360 MPa is used as the biaxially stretched polyamide film 2 . The molding packaging material can secure excellent moldability even when the molding packaging material is not coated with a slipperiness imparting component.
1. A molding packaging material, comprising:
a biaxially stretched polyamide film layer as an outer layer;
a thermoplastic resin layer as an inner layer; and
a metal foil layer disposed between the both layers, wherein
as the biaxially stretched polyamide film, a biaxially stretched polyamide film in which when a fracture strength of the film is defined as “X” and a fracture strain of the film is defined as “Y”, a X/Y value is 230 MPa to 360 MPa is used,
when a coefficient of static friction between outer surfaces of the biaxially stretched polyamide film layer is defined as “A” and a coefficient of dynamic friction between the outer surfaces of the biaxially stretched polyamide film layer is defined as “B”, a A/B value is in the range of 1.0 to 2.0, and
when a coefficient of static friction between outer surfaces of the thermoplastic resin layer is defined as “C” and a coefficient of dynamic friction between the outer surfaces of the thermoplastic resin layer is defined as “D”, a C/D value is in the range of 1.0 to 2.0.
2. The molding packaging material according to claim 1 , wherein
the fracture strain of the biaxially stretched polyamide film is 0.5 or more.
3. The molding packaging material according to claim 1 , wherein
the metal foil layer is one in which a chemical conversion coating is formed on both surfaces of the metal foil.
4. The molding packaging material according to claim 1 , wherein
the biaxially stretched polyamide film layer is laminated on one surface of the metal foil layer through a urethane adhesive layer and the thermoplastic resin layer is laminated on the other surface of the metal foil layer through a urethane adhesive layer,
the metal foil layer is an aluminum foil layer and the thermoplastic resin layer is a non-stretched polypropylene film layer, and
the biaxially stretched polyamide film is a simultaneously biaxially stretched 6-nylon film.
5. The molding packaging material according to claim 1 , wherein
the biaxially stretched polyamide film layer is laminated on one surface of the metal foil layer through a urethane adhesive layer and the thermoplastic resin layer is laminated on the other surface of the metal foil layer through a urethane adhesive layer,
the metal foil layer is an aluminum foil layer and the thermoplastic resin layer is a non-stretched polypropylene film layer, and
the biaxially stretched polyamide film is a simultaneously biaxially stretched 6,6-nylon film.
6. The molding packaging material according to claim 1 , wherein
the biaxially stretched polyamide film layer is laminated on one surface of the metal foil layer through a urethane adhesive layer and the thermoplastic resin layer is laminated on the other surface of the metal foil layer through a urethane adhesive layer,
the metal foil layer is an aluminum foil layer and the thermoplastic resin layer is a non-stretched polypropylene film layer, and
the biaxially stretched polyamide film is a simultaneously biaxially stretched MXD nylon film.
7. The molding packaging material according to claim 1 , wherein
the biaxially stretched polyamide film layer is laminated on one surface of the metal foil layer through a urethane adhesive layer and the thermoplastic resin layer is laminated on the other surface of the metal foil layer through a urethane adhesive layer,
the metal foil layer is an aluminum foil layer and the thermoplastic resin layer is a non-stretched polypropylene film layer, and
the biaxially stretched polyamide film is a successively biaxially stretched 6-nylon film.
8. The molding packaging material according to claim 1 , wherein
the biaxially stretched polyamide film layer is laminated on one surface of the metal foil layer through a urethane adhesive layer and the thermoplastic resin layer is laminated on the other surface of the metal foil layer through a urethane adhesive layer,
the metal foil layer is an aluminum foil layer and the thermoplastic resin layer is a non-stretched polypropylene film layer, and
the biaxially stretched polyamide film is a successively biaxially stretched 6,6-nylon film.
9. The molding packaging material according to claim 1 , wherein
the biaxially stretched polyamide film layer is laminated on one surface of the metal foil layer through a urethane adhesive layer and the thermoplastic resin layer is laminated on the other surface of the metal foil layer through a urethane adhesive layer,
the metal foil layer is an aluminum foil layer and the thermoplastic resin layer is a non-stretched polypropylene film layer, and
the biaxially stretched polyamide film is a successively biaxially stretched MXD-nylon film.
10. The molding packaging material according to claim 1 , wherein
the biaxially stretched polyamide film layer contains silica particles.
11. The molding packaging material according to claim 1 , wherein
the biaxially stretched polyamide film layer contains fatty acid amide.
12. A molded case, which is obtained by subjecting the molding packaging material according to claim 1 to deep draw forming or bulging.
13. The molded case according to claim 12 , which is used as a battery case.