Due to the high light transmittance of transparent plastics, the surface quality of plastic products must be strictly required, and there must be no markings, pores, mould or whitening. The defects such as fog halo, black spots, discoloration, poor gloss, etc., thus the raw materials and equipment are used throughout the injection molding process.The design […]
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Plastic varieties: During the molding process of thermoplastics, there are volume changes caused by crystallization, strong internal stress, large residual stress frozen in the plastic parts, strong molecular orientation and other factors. Therefore, compared with thermosetting plastics, their shrinkage rate is larger, the shrinkage rate range is wider, and the directionality is obvious. In addition,
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Hardness is the main factor affecting wear resistance. Generally speaking, the higher the hardness of the mold parts, the smaller the wear and the better the wear resistance. In addition, wear resistance is also related to the type, quantity, shape, size and distribution of carbides in the material. The toughness of the mold mainly depends
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Injection molding: also known as injection molding, its principle is to add granular or powdered raw materials into the hopper of the injection machine. The raw materials are heated and melted into a flowing state. Under the push of the screw or piston of the injection machine, they enter the mold cavity through the nozzle
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Injection molded parts dents are caused by shrinkage depressions caused by the cooling and hardening of the plastic, and mainly appear in thick wall positions, ribs, housings, the back of nut inserts, etc. Equipment Insufficient material supply The screw or plunger is severely worn, and the melt leaks during injection and pressure holding, reducing the
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Injection moulding is a manufacturing process widely used for producing parts by injecting molten material into a mould. It is a highly versatile technique that can be applied to a variety of materials, including plastics, metals (known as die-casting), and glasses. This process is favoured for its ability to produce high volumes of identical items
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What are the advantages of hot runner molds? What is a hot runner? Hot runner technology is an advanced technology applied to the pouring runner system of plastic injection hot runner molds, and is a hot direction in the development of plastic injection molding technology. The so-called hot runner molding means that the plastic sent
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why do some places need to do inserts?
In plastic mold design, why do some places need to do inserts? Read More »
Black spots and impurities are important factors that cause scrap rates in normal production processes. They mainly affect the appearance of products and lead to product scrapping. Impurities and most black spots are foreign substances and have nothing to do with the raw materials themselves, while a small number of impurities and black spots are
Causes And Solutions For Black Spots And Impurities In Injection Molded Products! Read More »
Plastic molding process and mold design Plastic molding technology and mold design Important conditions for molding high-quality plastic parts: advanced mold design, high-quality mold manufacturing, high-quality mold materials, reasonable processing technology and modern molding equipment Classification according to different molding methods of plastic parts: injection mold, compression mold, injection mold, extrusion mold, pneumatic molding mold
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