Plastic bags can be seen everywhere in our daily life, so do you know how plastic bags are made? What are the processes for making plastic bags? The editor summarized four points. Now let’s take a look:
1. Granulation process: The raw material made by plastic bags is plastic granules. The waste is sent to the granulator, cut, heated and melted, and extruded 0.3CM small granules
2. Blow molding process: The blow molding machine can be divided into heating and melting part, blowing part, and rewinding part. Pour the plastic pellet raw materials into the blow molding machine for high temperature ablation, and mix the plastic melt evenly under the tumbling of the screw before sending it. Toward the machine head, there is a 0.2CM ring in the center of the machine head. The plastic melt is extruded from the ring of the machine head under high pressure to form a plastic tube with a thickness of 0.1Cm, and then it is blown evenly by the machine head blower. A thin plastic bag tube is formed. The plastic bag tube is fed into two tightly tumbling rollers. The two rollers tumbling to squeeze out and press the air in the plastic bag tube to form the original long plastic bag, and then the printing equipment The plastic bag is printed, and finally the rewinder rolls it into a cylindrical ball.
3. Bag pressing process: Put the blow-molded plastic bag balls into the bag press machine and cut them into plastic bags of moderate size, and seal the two ends of each bag, and then take the initiative to put about hundreds of plastic bags in a pile
4. Bag cutting process: Put one end of the plastic bag under the knife of the bag cutting machine, and under the high pressure effect of the bag cutting machine, cut off the center part of one end of the plastic bag to form a handle that is convenient for us to carry