Plastic film blowing machine because of its good barrier property, moisture proof, anti frost, oxygen, fresh, oil resistance, can be widely used in heavy packing. Such as a variety of fresh fruits, meat dish, liquid beverages, pickles, fresh milk and other medical supplies. According to the production requirements of products, the installation and adjustment of knife cutter, rolling and other production equipment, production must be set in the heat shrinkable film will also test the oil supply groove heat shrinkage rate, film blowing machine host before starting all unit operation must be operated, the host after starting the lead film at the same time supply, adjust the thickness of the products according to the provisions of products reach the width deviation, improve the engine speed to meet the requirements of the width, thickness of the specified value. In order to meet the needs of plastic film packaging material some special features of the production process, the various properties of the material and film coextrusion together, form a multifunctional plastic film, the development of a multilayer coextrusion film blowing machine. In the starting process, related personnel should leave, to prevent the material to prevent local overheating burns out, the belt and the mixing barrel to prevent injuries, hair and clothes were reeling in. Check and add the lubricating oil in the reduction box and air compressor, and check the lubrication of the transmission parts. Avoid drying operation and making noise. When starting the operation must first check the power supply connection is disconnected, leakage; check whether the instrument is not normal. First ensure that all parts of the safety and normal, so as not to affect the production and cause accidents.