| 摘要 |
PROBLEM TO BE SOLVED: To provide a manufacturing method of a packing material for a lithium ion battery that is used as a material for packing a lithium ion battery, and that has excellent protective physical properties of the lithium ion battery main body and improved productivity in an emboss molding process or the like. SOLUTION: This packing material for a lithium ion battery is composed of at least a base-material layer, an adhesive layer, aluminum, a conversion treatment layer and a sealant layer, and the resin constituting the sealant layer comprises 0.5 weight % to 10 weight % of one, or two and more of such agents as fluid paraffin, a fatty-acid-ester-system lubricant, a dispersing agent consisting of polyester-system surfactants, and a polyglycerin-ester-system additive. The conversion treatment is potassium chromate treatment, and the resin constituting the sealant layer is random propylene, linear low-density polyethylene and medium-density polyethylene. The sealant layer has a multilayer structure composed of two or more layers, and the innermost resin layer of the sealant layer with the multilayer structure contains the additive. |
