Molding packaging material, and molded case

1. A molding packaging material, comprising:

a heat resistant resin layer as an outer layer;

a metal foil layer; and

a first adhesive agent layer arranged between the heat resistant resin layer and the metal foil layer,

wherein the first adhesive agent layer is constituted by an adhesive agent containing a two-part curing type polyester polyurethane resin made of a polyester resin as a main ingredient and a multifunctional isocyanate compound as a curing agent,

wherein the polyester resin is made from dicarboxylic acid and dialcohol, the dicarboxylic acid contains aliphatic carboxylic acid whose number of methylene of a methylene chain is an even number and aromatic carboxylic acid, and a content rate of the aromatic carboxylic acid to a total amount of aliphatic carboxylic acid and aromatic carboxylic acid is 40 to 80 mol %, and

wherein the polyester resin is 8,000-25,000 in number average molecular weight (Mn) and 15,000 to 50,000 in weight average molecular weight (Mw), and a ratio thereof (Mw/Mn) is 1.3 to 2.5.

2. The molding packaging material as recited in claim 1 , wherein the two-part curing type polyester polyurethane resin contains the main ingredient and the curing agent at a rate of 2 to 25 mole of isocyanate functional group (—NCO) to 1 mole of polyol hydroxyl group (—OH).

3. The molding packaging material as recited in claim 1 , wherein the two-part curing type polyester polyurethane resin is 70 to 400 MPa in Young's modulus by a tensile test (JIS K7162) of a cured film obtained after reacting the main ingredient and the curing agent.

4. The molding packaging material as recited in claim 1 , wherein the multifunctional isocyanate compound as the curing agent contains 50 mol % or more of aromatic isocyanate.

5. The molding packaging material as recited in claim 1 , further comprising:

a thermoplastic resin layer as an inner layer; and

a second adhesive agent layer arranged between the metal foil layer and the thermoplastic resin layer,

wherein a chemical conversion coating film is provided on at least one surface of the metal foil layer.

6. A molded case comprising:

a concave case main body having an opening periphery; and

a flange continuously formed on the opening periphery of the concave case main body,

wherein the concave case main body and the flange are formed by drawing or bulging a molding packaging material,

wherein the molding packaging material includes:

a heat resistant resin layer as an outer layer;

a metal foil layer; and

a first adhesive agent layer arranged between the heat resistant resin layer and the metal foil layer,

wherein the first adhesive agent layer is constituted by an adhesive agent containing a two-part curing type polyester polyurethane resin made of a polyester resin as a main ingredient and a multifunctional isocyanate compound as a curing agent,

wherein the polyester resins is made from dicarboxylic acid and dialcohol, the dicarboxylic acid contains aliphatic carboxylic acid and aromatic carboxylic acid whose number of methylene of a methylene chain is an even number, and a content rate of the aromatic carboxylic acid to a total amount of aliphatic carboxylic acid and aromatic carboxylic acid is 40 to 80 mol %, and

wherein the polyester resin is 8,000 to 25,000 in number average molecular weight (Mn) and 15,000 to 50,000 in weight average molecular weight (Mw), and a ratio thereof (Mw/Mn) is 1.3 to 2.5.

7. The molded case as recited in claim 6 , wherein the molded case is used as a battery case.

8. The molded case as recited in claim 6 , wherein a forming depth of the case main body is 3 mm or more, and a radius of curvature R of a shoulder region formed by a side wall of the case main body and the flange is 2 mm or less.