The classification and function of a brown paper bag

The classification of the kraft paper bags: 1, the multi-layer kraft paper bags, with two or more than two layers of kraft paper bagmachine, make the pouch, using polyester thread at the bottom of the suture, again using hot paper, heat sealing treatment. 2, zhisu composite bag: also called the triad kraft paper bags, outer for kraft paper, lining for plastic PP woven bag, using EVA, PP, PE and so on raw materials for high temperature composite processing, at the bottom of the processing is completed according to different kinds. : 3, the bottom open pockets and multi-layer kraft paper bags basic same, use machine made into semi-finished products, after artificial fold bottom processing, made into square at the bottom, using the adhesive glue on the bottom, and then to hot air, air to dry processing, etc. 4, the bottom valve pocket, and the bottom open pockets have the same basic process, and the bottom valve pocket counterpart department can be processing, at the same time adding bell mouth to mouth, and is used for filling material. bags of raw materials mainly include kraft paper, PP woven cloth, polyester thread, etc. Brown paper bag use: used to packing powder, granular, plate, block material; Products are widely used in chemical industry, building materials, food, medicine, metallurgy, plastics, feed and other industries.
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