MESH TOOL AND PACKAGING BAG WITH MESH TOOL

摘要

PROBLEM TO BE SOLVED: To provide a mesh tool and a packaging bag with the mesh tool having an improved cold resistance and are easy to be fused without thermal deterioration of the bag proper. SOLUTION: A male member 11 and a female member 12 of mesh tools 10 are formed of a mixture of polypropylene and an ethylene copolymer made by copolymerizing ethylene andα-olefin having 3 to 20 carbon atoms. Following ethylene copolymers are ideal for use: weight-average molecular weight/number- average molecular weight is less than 3, the density 0.850 to 0.935g/cm<3> , melt index 0.3g to 15g/10 minute, and molecular weight dependency range of the branch number is 0 to 5 per 1,000 carbons. In a packaging bag 30 with a mesh tool, belt-like bases 21 and 25 of the tool 10 are fused to the bag proper 31.