What is the production process of high quality PE plastic bags?
Release time:
2021-11-09
The main raw material of PE plastic bags is polyethylene, which is divided into low density polyethylene (LDPE) and high density polyethylene (HDPE). The selection of different raw materials will affect the thickness, hardness, transparency and mechanical strength of PE plastic bags. Therefore, before production, it is necessary to accurately select and prepare the required raw materials.
PE plastic bag is a kind of plastic product that we often use in our daily life. It is widely used in supermarket shopping bags, garbage bags, food packaging bags and other fields. High-quality PE plastic bags have the characteristics of strong toughness, good sealing and durability, so what is the production process of high-quality PE plastic bags?
1. raw material preparation
The main raw material of PE plastic bags is polyethylene, which is divided into low density polyethylene (LDPE) and high density polyethylene (HDPE). The selection of different raw materials will affect the thickness, hardness, transparency and mechanical strength of PE plastic bags. Therefore, before production, it is necessary to accurately select and prepare the required raw materials.
PE plastic bag
2. extrusion production process
The production of PE plastic bags mainly adopts extrusion production process. This process can complete the molding of PE plastic bags in a mold. The specific process is as follows:
1. The plastic particles are automatically transported into the extruder barrel through the feeding port.
2. The extruder barrel melts the plastic particles at high temperature to make them flow, and then extrudes them through the die.
3. The shape of the die determines the shape of the PE plastic bag. At the same time, when it is extruded, it is stretched and calendered according to the requirements, so as to control the thickness and size of the PE bag.
4. The extruded PE plastic bag is cut off at the die outlet and tied into strips, then placed on the film roll, and further processed when it is needed.
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