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          来源:http://www.savestudio60.com/news749469.html 发布时间:2022-1-6 13:07:00


          Plastic bags are often used in our life. They are divided into many different types and are suitable for different fields. In our daily life, we often use PE plastic bags. PE is the abbreviation of polyethylene, a thermoplastic resin polymerized by ethylene. It has many advantages and can be used for packaging clothing, bags, electronic products, etc. This is mainly determined by the outstanding characteristics of PE. What are the characteristics of PE bags? Next, the PE bag manufacturer will introduce it to us.


          Excellent corrosion resistance and electrical insulation (especially high frequency insulation). It can be modified by chlorination, chemical crosslinking and irradiation crosslinking. It can be reinforced by glass fiber Low pressure polyethylene has high melting point, rigidity, hardness and strength, low water absorption, good electrical properties and radiation resistance; High pressure polyethylene has good flexibility, elongation and impact strength; High molecular weight polyethylene has high impact strength, fatigue resistance and wear resistance Low voltage polyethylene is suitable for making corrosion-resistant parts and insulating parts; High pressure polyethylene is suitable for making films, etc; High molecular weight polyethylene is suitable for shock absorption, wear resistance and transmission parts.


          Forming characteristics:


          1. The crystalline material has small moisture absorption, does not need to be fully dry, has good fluidity and is sensitive to pressure. High pressure injection should be used during molding. The material temperature is uniform, the filling speed is fast and the pressure is fully maintained Direct gate should not be used to prevent uneven shrinkage and large internal stress Pay attention to the gate psition to prevent shrinkage and deformation


          2. Large shrinkage range and value, obvious directionality, easy to deform and warp The cooling speed should be slow. The die is equipped with cold material cavity and cooling system


          3. The heating time should not be too long, otherwise separation will occur


          4. When soft plastic parts have shallow side grooves, they can be forcibly demoulded. 5 Melt fracture may occur and should not be in contact with solvent to prevent cracking.


          This article is provided by Jinan plastic bag. Our website is: http://www.sxsuliao.com We will serve you with wholehearted enthusiasm. Welcome to visit!

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