This aluminum laminated film (111 um) is used as casing material for polymer Li-Ion battery,50pcs/Bag. Specifications Layers from outside to inside (Material in bracket) Polyamide (JIS Z1714): 0.025mm(+-0.0025mm) Adhesive (Polyester-polyurethane): 4-5g/m2 Aluminum foil (JIS A8021): 0.040mm(+-0.004mm) Adhesive (Urethane-free Adhesive): 2-3g/m2 Polypropylene: 0.040mm(+-0.004mm) Thickness: 111μm±11μm Width 100mm Length 210mm Surface quality Matt finish Pinholes Subject to the applicable aluminum foil standard Impurity 1mm or less in diameter Fisheye 2mm or less in diameter(clear),1mm or less in diameter(colored) Moisture Vapor / O2 Transmission Rate 200ppm / 5 years @ 300K Laminate strength Nylon/Al more than 2N/15mm Al/CPP more than 5N/15mm Heat seal strength More than 29.4N/15mm wide at 200x 0.2Mpa x2 sec by MTI's heat sealing equipmentMSK-140 and MSK-115A (Updated from VS-300) Remained solvent Less than 5mg/m2 Appearance Within the sample of the limit Slip factor CPP/CPP less than 1.0 Click the picture below to see the finished polymer Li-Ion battery made by heated sealer Click the video below to see how to make pouch cell