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    Maoxin answer - HDPE brand and use, give you the most comprehensive analysis

    release time:2020-03-03  viewed:722次
     High density polyethylene (HDPE) is a kind of thermoplastic resin with high crystallinity and non polarity. The appearance of HDPE is milky white and translucent to a certain extent. PE has excellent resistance to most of the chemicals used in life and industry. Now, let's talk about HDPE from Maoxin~
     
    Basic characteristics
     
    HDPE is a kind of opaque white wax material, its specific gravity is lighter than water, its specific gravity is 0.941-0.960, it is soft and tough, but it is a little harder than LDPE, and it can also stretch slightly, non-toxic and tasteless.
     
     
     
     
    [Combustion Characteristics]
     
    It is flammable and can continue to burn after leaving the fire. The upper end of the flame is yellow and the lower end is blue. When burning, it will melt, with liquid dripping, without black smoke. At the same time, it will emit the smell of paraffin combustion.
     
     
     
     
     
     
    [main advantages]
     
    Acid and alkali resistance, organic solvent resistance, excellent electrical insulation, low temperature, can still maintain a certain toughness. The surface hardness, tensile strength, rigidity and other mechanical strength of LDPE are higher than that of LDPE, close to that of PP, which is tougher than PP, but the surface finish is not as good as PP.
     
     
     
     
    [application]
     
     
     
    It is used for extruding packaging film, rope, woven bag, fishing net, water pipe, injection molding low-grade daily necessities and shell, non load-bearing components, plastic box, turnover box, extrusion blow molding container, hollow products, bottles.
     
     
     
     
    [injection molding process]
     
    There are many applications of HDPE, most of which can be used for film blowing, and general low density PE (LDPE) or linear low density PE (LLDPE) can be used. HDPE film grade is generally used in places where superior tensile strength and excellent impermeability are required. For example, HDPE film is often used in commodity bags, grocery bags and food packaging. PE film is generally processed by blowing film or flat extrusion.
     
     
     
     
    [brand and application Daquan - film category]

    A previous: Mao Xin's answer - key points of daily maintenance of film blowing machine
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