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Polyethylene terephthalate film for battery packaging materials, battery packaging materials, battery packaging material manufacturing methods and batteries
Polyethylene terephthalate film for battery packaging materials, battery packaging materials, battery packaging material manufacturing methods and batteries
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机译：用于电池包装材料的聚对苯二甲酸乙二酯薄膜，电池包装材料，电池包装材料的制造方法和电池
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摘要
PROBLEM TO BE SOLVED: To provide a packaging material for a battery having excellent moldability when laminated together with a barrier layer and a thermosetting resin layer as a base material layer of the packaging material for a battery. Provided is a polyethylene terephthalate film. A polyethylene terephthalate film used for the base material layer of a battery packaging material including a base material layer, a barrier layer, and a thermosetting resin layer in this order. In the stress-strain curve showing the relationship between the stress (MPa) applied to the polyethylene terephthalate film and the strain at that time, which is measured by a tensile test under the conditions of a chuck distance of 50 mm and a tensile speed of 300 mm / min. When the slope of the straight line connecting the yield point and the break point is measured, the ratio of the slope S TD in the direction of the TD of the polyethylene terephthalate film to the slope S MD in the MD direction of the polyethylene terephthalate film S TD / MD Is a polyethylene terephthalate film for packaging materials for batteries, which is 0.8 or more. [Selection diagram] None
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