1. The equipment must not be heated, and the heating temperature and time do not meet the specified requirements. The extruder and rotating die head must not be started, otherwise it will damage the equipment.

2. When unpacking raw materials, it is necessary to check for any wet materials. Wet materials must not be mixed and must be dried in the drying room before use.

3. When cleaning the mold head and mouth, only copper sheets can be used to clean the mold mouth, and it is not allowed to scrape the mold mouth with a shovel or iron sheet, otherwise it will cause damage to the mold mouth.

4. The guide rollers of plastic film blowing machines, including rubber rollers and winding rollers, must not be cut with blades, otherwise it may cause scratches on the guide rollers.

5. The filter screen and corona treatment machine of the extruder must be replaced and cleaned regularly. Generally, it is required to replace the filter screen and clean the silicone rollers of the corona treatment machine with alcohol within 24 to 48 hours. The specifications of the filter screen are two layers of 80 mesh, one layer of 100 mesh, and three layers of filter screen.

6. The guide roller of the corona treatment machine should not be turned on without the film moving. Once the film is cut off or stopped, the corona treatment machine should be urgently turned off to avoid burning out.

7. Thin films that have not undergone corona treatment or have not reached 38 dynes or more shall not be placed in the finished product, otherwise it may cause significant accidents in composite quality.