The plastic raw material processing process is mainly molten rubber particles, flow, shaping and cooling into finished products, is a process of heating and then cooling, but also the...
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Under the sunlight, there are streaks of pigment bands in the products This problem needs to be considered from two aspects: the physical and mechanical properties of plastic...
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The shrinkage problem of plastic parts (surface shrinkage and internal shrinkage) is caused by the defect of insufficient melt replenishment when the thicker parts are cooled. We...
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There are many factors affecting the cooling of the injection mold, such as the shape of the plastic part and the design of the parting surface, the type, temperature, and flow...
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Gas-assisted injection molding technology is an emerging plastic injection molding technology. Its principle is to use high-pressure gas to create a hollow section inside the plastic...
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Reasons and solutions for air bubbles in injection-molded PP Products with air bubbles in injection-molded PP.PP bubbles to solve problem one.1. Improve the mold temperature, reduce...
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I. Analysis of the causes of cracking of injection molded products
Cracking, including the surface of the parts filamentary cracks, microcrack, top white, cracking and caused...
Under-injection, also known as short shot, under-filling, under-filled parts, commonly known as under-injection, refers to the phenomenon of partial incompleteness...
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General product surface gloss defects can be divided into the following three kinds: mold failure, improper control of molding conditions, improper use of molding materials...
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Automotive bumper is one of the larger trim parts on the car, which has three main functions: safety, functionality and decoration.There are three main ways to achieve light-weighting...
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PE is a crystalline raw material, with very little moisture absorption, not more than 0.01%, so there is no need to dry before processing. PE molecular chain is flexible, the...
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Secondary injection molding, like co-injection molding, dual-injection molding, and sandwich molding, is all part of multi-material injection molding technology. The basic idea of...
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The reason why all-electric injection molding machine is popular in the market is that it has a performance that cannot be achieved by an all-hydraulic injection molding machine, mainly in the following aspects.
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I. Terminology explanation,Cracks on the surface of molded products are called cracks.Second, failure analysis and troubleshooting methods,1.Residual stress is too high. In the mold...
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In the manufacture of molds, mold exhaust is a very important part. Mold exhaust can represent the overall structure of the mold to the greatest extent.Even if the excellent mold is without good exhaust...
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With the wide application of plastic products, such as daily chemical products and beverage packaging containers, the appearance needs often require the surface of plastic mold cavities to reach the degree of mirror polishing.
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Introduction,Except for the main flow gate, most of the gates are the smallest part of the pouring system, with a cross-sectional area of only 3% to 9% of the cross-sectional area of the manifold.
(1) the injection nozzle hole is too large to cause the melt material reflux and shrinkage, too small resistance to a large amount of material is not enough to appear shrinkage.
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