2. Main motor driven by the variable frequency motor, and controlled by the frequency inverter, fast and stable for acceleration and deceleration.
3. Rewinding adopts differential air shafts, driven by the variable frequency control motor, automatic tension control.
4. Unwinding is controlled by the inverter and driven by the variable frequency motors, automatic tension controlled.
5. Unwinding adopts shaft-less loading and unloading, hydraulic lifting, easy for efficient loading and unloading, with web guide system.
BOPP film is colorless, odorless, tasteless, non-toxic, with high tensile strength, impact strength, rigidity, toughness and excellent transparency. It has a low surface energy and needs to be corona treated before being glued or printed. After corona treatment, it has good printability and can be printed with a beautiful appearance, so it can be used for composite substrates of composite films. The disadvantages are as follows: easy to accumulate static electricity, poor heat sealability, and the like. In high-speed production lines, BOPP film is prone to static electricity, and an electrostatic remover is required. The technology of biaxially stretching polypropylene coating has become more and more mature, and the application range of film is becoming wider and wider. From simple packaging industry to printing, plate making, and some special industries, the application of polypropylene film quickly penetrates into human life every field.
BOPP transparent film is also called light film and flat film. Used in printing, composite (transparent, matte type), coating (adhesive tape and PVDC coated film base film), it is the most versatile and most productive variety of film products; BOPP ordinary film (flat film, light) Membrane) is suitable for printing and packaging of food packaging, paper composite and general packaging. It is the largest variety of BOPP products and is widely used in various printing and composite products for packaging of various foods and articles. In the consumption of light film, the tape film has a large proportion, and its production characteristics are large output, simple process and low technical requirements.