Yichun knitting bag _ only Tiande packaging (certified) _ bags provided by Pingxiang City Tiande Packaging Materials Co., Ltd. Pingxiang City Tiande Packaging Materials Co., Ltd. (www.tdbzcl.com) is specialized in "bags, tons of bags, container bags, color bags, paper bags, tons of second-hand bags, woven ring" of the enterprise, the company Adhering to the "honesty, hard service" concept, to provide you with the highest quality products and services. Welcome to inquire! Contact: U Saw park. Composite bags: composite plastic film bag Yichun series only, has a layered structure, the layered structure contains at least directly adjacent set of co-extruded composite and its main ingredients are the two mutually exclusive plastic resin one of the first film and the second film. A first layer disposed on the surface of the composite plastic film. The main components of the first layer is a polypropylene copolymer, the main component of the second layer is a polyester homopolymer. Such a composite plastic film disclosed in the present utility model, which is not only the individual layers have different properties Jiangxi bags, and at least two adjacent film layers disposed between the easy separation, is a new aluminized or laser transfer film layer molded dedicated professional production of packaging film Tiande build a variety of second-hand bags Container ton bag paper bag color woven 5.6.2 overlap its surface, the load is applied on top of 9.8 N , placed inside the oven 80 ℃ 1h, immediately after removing the two separate overlapping sample, check whether the sticky surface, melting marks and other anomalies. 5.7.1 5.7 drop resistance test environment at room temperature, and humidity. 5.7.2 The test site is flat concrete floor. 5.7.3 fill factor of 0.80 to 0.85. 5.7.4 Test quality and material selection