The compound bag is suitable for vacuum packaging or general packaging of food, electronic products, chemical industry, medicine, tea, precision instruments and national defense cutting-edge products. Raw materials: OPP, PE, POF, PPE, PP, composite film, etc. The process is divided into: side seal bag, bottom seal bag, middle seal bag and three side seal. Four different machines are required. Material classification 1. Material: BOPP/LLDPE two-layer composite characteristics: moisture-proof, cold-resistant, low-temperature heat sealing and strong tensile strength; Uses: instant noodles, snacks, frozen snacks, powder packaging, etc. 2. Material: BOPP/CPP two-layer composite characteristics: moisture-proof, oil-resistant, high transparency and good stability;

POF is a kind of heat shrinkable film, which is mainly used for packaging regular and irregular shaped products. Due to its non-toxic and environmental protection, high transparency, high shrinkage rate, good heat sealing performance, high gloss, strong toughness, tear resistance, uniform heat shrinkage and suitable for automatic high-speed packaging, POF is a replacement product of traditional PVC heat shrinkable film, widely used in automotive supplies, plastic products, stationery, books, electronics, circuit boards, MP3,VCD, handicrafts, photo frames and other wood products, toys, pesticides, daily necessities, food, cosmetics, canned drinks, dairy products, medicine, cassettes and video tapes and other products. Main features 1, high transparency

OPS (oriented polystyrene) heat shrinkable film is a new type of packaging material that meets the requirements of environmental protection. OPS heat shrinkable film has high strength, high rigidity, stable shape, and has good gloss and transparency. Convenient processing, easy coloring, good printing performance, and extremely high printing resolution. For the trademark that continues to pursue exquisite printing, it is completely a material progress. Due to the high shrinkage and strength of OPS film, it can be closely fitted with containers of various shapes, so it can not only print out exquisite patterns, but also meet the use of novel packaging containers with different shapes. This kind of non-toxic

PET printing, refers to the polyester film, that is, polyethylene terephthalate film printing engineering. Polyester film overview Polyester film, that is, polyethylene terephthalate film, is a film made of high-quality polyester chips as the main raw material, using advanced process formulas, after drying, melting, extrusion, casting and stretching. Since 1948 the British Imperial Chemical Company (I .C. I) and the United States DuPont Company (DUPONT) developed polyester film, and in 1953 to achieve the industrial production of biaxially oriented polyester film, polyester film in many fields have a wide range of applications. different uses