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how to choose extrusion molding material

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  • 17/08/2016

how to choose extrusion molding material Choose direct blow molding mold of the main material, you should consider the type of product, forming volume, type of plastic, mold manufacturing costs due to cable. (1) cast ironBecause of easy processing, low cost, in the past most of the mold are used to make it, but because the cast iron low mechanical strength, poor wear resistance, the current amount has been limited. Cut the seam portion of the wear, very sensitive to defects, product volume …

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How to operate Blow Molding Machines

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  • 18/08/2016

How to operate Blow Molding Machines 1. before the start of work 1) be familiar with the use of manual molding equipment, strictly in accordance with the requirements to be able to use the manual device to operate. 2) Check the electrical wiring meets the requirements, without loosening. 3) Using an ohmmeter to check the motor, the electric heater insulation resistance has reached a predetermined desired value, ungrounded electrical components of the insulation resistance value of not…

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How to maintain extruder

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  • 19/08/2016

How to maintain extruderRegular cleaning of the extruder barrel, level rod, parison head and mold, the timing lubricate moving parts, careful maintenance of machinery, raw materials to maintain a clean work area clean and help out a long-term blow molding machine, normal operation.Extruder maintenance(1) extruder routine maintenance precautions during maintenance1) Plastic raw materials and additives used, does not allow folders with debris, hard metal material and sand etc. into the hopper barre…

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Head parison maintenance

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  • 22/08/2016

Head parison maintenance When the high processing temperatures or intermittently blow, if the melt residence time is longer in the storage compartment, certain polymers may have some degree of degradation. And if too many additives in polymers, in the molten material during the formation of byproducts. These degradation products or by-products will accumulate in the head runner, so that type of bad streaks surface, affecting the products performance and appearance. Therefore, maintaining the p…

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General Overview of Plastic sheet production Principles

  • By Wuhan Handern Machinery Co.Ltd
  • 23/08/2016

General Overview of Plastic sheet production PrinciplesPlastic sheet production is produced under the combined effect of a single-screw extruder and a molding auxiliary. Usually loose flake, powder or granular cold material from the hopper into the extruder barrel is heated, the special shape of the screw material through the barrel rotation, advancing along the grooves, and the porous plate material movement or other choke element direction gradually compacted, resulting in pressure. During this…

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what is single-screw extruder

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  • 24/08/2016

what is single-screw extruder The host is the extrusion single screw extruder, which consists of four parts: extrusion system, transmission system, heating and cooling systems, and control systems. 1. Extrusion SystemIts role is the solid material is plasticized homogeneous melt, and by means of the screw compression so as to be continuously extruded through a die. Extrusion system comprising: a charging device, cylinder, screw, nose and die. Extrusion system is a major component of the extruder,…

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