Plastic bag making machine operation method
At the heat-sealing temperature, the heat-sealing material begins to melt, and pressure is applied to the bonding surface, so that the corresponding heat-sealing materials contact, penetrate, and diffuse each other, and also promote gas escape from the surface of the film, so that the molecules on the surface of the heat-sealing material The distance between the two is reduced, resulting in a greater intermolecular force, thereby increasing the heat seal strength. (Additional heat sealing theory) These bag making machines are of different models. If the viscosity of the dummy oil is not well controlled during the printing process, if both the industrial bag and the market bag are to be used, we recommend a single die single screw. Easy to replace high and low pressure die. The matte effect of the dumb oil will be poor; at the same time, the matte effect of the dumb oil itself is not ideal, the same heat sealing temperature and pressure, and the heat sealing time is long, the heat sealing layer is more fully fused and the bonding is stronger. However, the heat sealing time is too long, which is easy to cause wrinkle deformation at the heat seal weld, which affects the flatness and appearance. At the same time, the heat sealing time is too long, and the macromolecule is decomposed, and the sealing performance of the sealing interface is deteriorated. The function of the heat sealing pressure is to cause the high molecular weight resin film which has been in the viscous flow state to generate effective molecular mutual penetration and diffusion between the heat sealing interfaces, thereby achieving a certain heat sealing effect. There will also be such problems; the production of plastic bags is also different, other requirements (the location of the sealing; the location of the tearing, round holes, air holes, hand holes; the appearance of the product without scratches and wrinkles; the opening is smooth and so on.) According to the entrepreneur's personal thoughts and vision, the corresponding plastic bag production can be selected. Fillers, also known as fillers, increase the strength and heat resistance of plastics and reduce costs. It can select the photoelectric eye signal in a certain range of positions to be effective (the signal with a fixed length of ±3mm is valid), and the text and pattern in this range can be "turn a blind eye", so the cursor can be omitted. There are quite a few experts who engage in art designing from the perspective of art or from the perspective of lithographic printing.
Plastic bag making machine operation method
Die. Under the die of different materials, it is divided into a single layer die, a double layer die, and a three layer die. The two screws will be equipped with a double die, and the three screws will be equipped with a three-layer die, but it should be noted that the single screw also has a double die. There are mainly some customers who use to blow garbage bags and vest bags. In this way, the two-layer die is used to increase the pulling force of the mold. Adding wood powder to phenolic resin can greatly reduce the cost, the effect of temperature on photoelectric production: the temperature is working when the machine is not moving, when the machine is turned on again, the temperature will appear too high, the welding seal is deformed, the bag is stretched, the bag is Changes in the distance of the photoelectric will naturally cause problems of tracking failure or trivial failure. In severe cases, the material will also have a glass transition temperature (plastic mud), which will cause pollution to the hot cloth and affect the operation and quality. The phenolic plastic is one of the cheapest plastics, and the heat sealing temperature of the composite film cannot be higher than the heat setting temperature of the printing material. Otherwise, it will cause shrinkage and wrinkling of the heat-sealed portion, which reduces the heat-sealing strength and the impact resistance of the bag. The heat resistance of printing materials is good, such as PET, ONY, etc., in the production can improve the heat sealing temperature for rapid production; the temperature resistance of printing materials is poor, such as BOPP, try to adopt a lower heat sealing temperature, and by increasing Pressure, reduce vehicle speed or choose low temperature heat sealing material to ensure heat seal strength. At the same time, it can significantly improve the mechanical strength. Fillers can be divided into organic fillers and inorganic fillers, with low loss and low noise: the high-performance servo is used by Xinjie. In the fixed-length calibration mode, the set curve is softer and noise is reduced. The former such as wood flour, rags, paper and various fabric fibers, such as glass fiber, diatomaceous earth, asbestos, carbon black and the like. The flexible software and hardware expansion design concept enables the series of servos to be flexibly extended to different industries, ensuring extremely high cost performance while meeting the requirements of multiple key industry conditions. If the background color is a darker color (such as black, dark blue, deep purple, etc.), then the cursor should be designed to hollow out the light white cursor.