The blow molding machine process began to be used to produce low-density polyethylene vials during World War II. In the late 1950s, with the birth of high-density polyethylene and the development of blow molding machines, blow molding technology was widely used. The volume of hollow containers can reach thousands of liters, and some production has adopted computer control. Plastics suitable for blow molding include polyethylene, polyvinyl chloride, polypropylene, polyester, etc. The resulting hollow containers are widely used as industrial packaging containers.
The plastic particles are plasticized by the extruder and then blown into a film by a film blowing machine. The barrel film is cut into the required shape by a vest bag making machine and the bottom is heat-sealed. After the film is blown, a vest bag is cut out.
The process is very simple and there are corresponding machines.
The energy saving of the film blowing machine can be divided into two parts: one is the power part and the other is the heating part.
Energy saving in the power part: Frequency converters are mostly used. The energy saving method is to save the residual energy consumption of the motor. For example, the actual power of the motor is 50Hz, but you actually only need 30Hz in production, and the excess energy consumption is wasted. Wasted, the inverter changes the power output of the motor to achieve energy saving.
Looking at the competition among advanced fully automated center-sealing bag making machines at home and abroad, the main competition is the competition of equipment working efficiency, that is, the competition of high speed and high efficiency characteristics. The equipment used in flexible packaging bag making machines integrates machinery, electricity, light and gas. High mechanization and automation are important directions for its development. It requires high speed and efficiency to reduce the cost accounting of target products, and requires high flexibility and flexibility to adapt to updates and changes in target products. Therefore, when selecting the copying target for flexible packaging bag making machine equipment, high speed and high efficiency should be used as a reference, and on this basis, PCB board modifications, software and hardware secondary development and upgrades should be carried out, thereby improving the competitiveness of the equipment.
Therefore, the current focus of research on film blowing machines is not just to simply increase the speed of the equipment, but to further improve the work efficiency of the equipment by transforming the equipment's single-row bag making mode, so that the equipment can maintain a higher speed, more efficiency, and a comprehensive degree of automation. High-speed middle sealing fully automatic bag making machine equipment and carry out industrial production and promotion and application.