| abstract |
PROBLEM TO BE SOLVED: To reduce the odor and the elution of additives and deteriorated materials suitably used in fields requiring clean packaging materials and containers such as food, medical and electronic materials, heat sealability, slipperiness and impact resistance. Heat-sealable polypropylene film having excellent properties and flexibility, few fish eyes and small thickness spots, and a method for producing the same. SOLUTION: A heat-sealable film made of a polypropylene resin in which 3 to 15 mass% of a flexible polyolefin resin is added to 85 to 97 mass% of a propylene-ethylene block copolymer resin. However, a heat-sealable polypropylene film having a maximum diameter of 10 mm or less / 0.1 m 2 within 10% at a width of 1000 mm. A heat-sealable polypropylene film characterized by using a T-slot type die when forming a film by the T-die method, and filtering the resin melted in the melt-extrusion process with a filter having a filtration accuracy of 100 μm or less. Manufacturing method. [Selection figure] None |