2014年2月10日星期一

There are many kinds of plastic processing aid methods

About plastic extrusion, injection molding, blow molding, rotational molding, casting, dip and other plastic molding process, depending on the specific choice of materials and products, the advantages and disadvantages of hard to say.
  Here I am with PE plastic processing methods simply lower, PE available a wide manufacturing different processing method. As the main raw material ethylene, propylene, 1 - butene, hexene copolymer, under the action of a catalyst, using a slurry polymerization or gas phase polymerization process, the polymer obtained by flash separation, drying, granulation, etc. processes, was
Uniform particles have finished. Including such sheet extrusion, film extrusion, pipe or profile extrusion, blow WSD Plastic impact modifier  molding, injection molding and rotational molding. Extrusion: grade for extrusion production generally has a melt index of less than 1 and the width to wide MWD. In the process, the availability of suitable MI low melt strength. Broader MWD is more suitable for extrusion grades, because they have a higher production speed, lower the die pressure and melt fracture reduction trend. There are many PE extrusion applications, such as wires, cables, hoses, tubes and profiles. Pipes for natural gas applications ranging from a small section of yellow tube to 48in diameter thick-walled clarinet for industrial and municipal pipes. Alternative to large diameter hollow wall  WSD zinc stearate made of concrete pipe used as rainwater drains and other sewer pipelines rapidly.
Sheet and thermoforming: Many large picnic-type freezer thermoforming lining is made of PE, with toughness, light weight and durability. Other sheet and thermoformed products include fenders, tank linings, disc bowl guard, transport boxes and cans. The rapid growth of a mass-sheet applications are mulch or bottom in the village, which is based MDPE with toughness, chemical resistance and impermeability. Blow: These range from equipment bleach, oil, detergent, milk and a bottle of distilled water into WSD PVC stabilizer  a large refrigerator, car fuel tank and the canister. Blow molding grade characteristic indicators, such as melt strength, ES-CR and toughness, and the sheet for thermoforming applications level
Similar, it can be used with similar grade.

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