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Injection molding process of TPR material

Injection molding process of TPR material Posted on : Aug 23 , 2022 By  GREFEE Typical, according to the condition of the properties of material and material supplement, the inspection should be carried out to check the appearance and process properties of materials before molding. The supplied particle have varying degrees of water, solutions, and other volatile low molecular substances, especially the TPR of which the water content is always exceeding the allowed limit. Thus, TPR should be fully dried…

11 kinds of surface defects and solutions of TPE injection molding parts

11 kinds of Surface Defects and Solutions of TPE Injection Molding Parts Posted on : Aug 17 , 2022 By  GREFEE TPE injection molding parts are commonly used in toy dolls, toy tires, sucker dolls, fitness equipment, sporting goods, auto parts, etc. TPE injection molding products often have surface defects. GREFEE, the TPE injection molding manufacturers in China has collected and concluded 11 common surface defects and the solutions for the TPE injection molding manufacturers. Whitening It refers to that the…

Influence of mold temperature on injection molded products

Influence of Mold Temperature on Injection Molded Products Posted on : Aug 10 , 2022 By  GREFEE The mold temperature is an important variable in the injection molding. No matter what kind of plastic injection molding, It must be ensured that the surface of the forming mold is basically wet. A hot mold surface render the plastic surface in a liquid status for a long period of time, and is fully enough to produce pressure inside the cavity. If the cavity…

Cause analysis of short shots of injection molded products

Cause analysis of short shots of injection molded products Posted on : Oct 11 , 2022 By  GREFEE Short shot indicates underfeeding and the products is insufficiently filled, during which the end of the material flows is incomplete or Part of the multi cavity is not fully filled, especially in the thin-walled area or the end area of the flow path. It is presented that the melt condenses before the mold cavity is fully filled, and the cavity is not completely…

Precision injection molding of automotive plastic parts

Precision injection molding of automotive plastic parts Posted on : July 26 , 2022 By  GREFEE Automotive plastic parts, such as coil frame, base, fuse box, lamp holder, chip fuse, central distribution box, sheath, push frame, reed row components and housing, are mostly produced by injection molding. Since these plastic parts have a higher requirement in terms of the designing accuracy, the automotive plastic parts suppliers cannot adopt ordinary plastic parts molding method, but to choose precision injection molding processing….

Properties of clear plastics and injection molding process

Properties of clear plastics and injection molding process Posted on : Aug 12, 2022 By  GREFEE Due to multiple advantages of plastic, such as light weight, great rigidity, simple molding, low cost and other aspects, clear plastic molding has been replacing the role of glass in the modern industry and daily used goods, especially the application in optical instruments and plastic bottle packaging industry, which is developed rapidly.  Since the clear plastic are required to be of high transparency and wear…

Methods to Solve the PC Injection Molding Issues

Methods to Solve the PC Injection Molding Issues Posted on : Aug 2 , 2022 By  GREFEE There are many factors which affect the quality of PC products in different aspects. As long as you grasped the following factors, the quality issues can be improved significantly.    Raw material The material used for injection is the transparent and colorless aggregate. Some of them are colored in mild yellow. The relative molecular weight is 2.3 × 10,000 · 3.2 × 10,000. Before…

What should be paid attention to in CNC machining

What should be paid attention to in CNC machining of magnesium alloy parts? Posted on : July 15 , 2022 By  GREFEE Definition of magnesium alloy Magnesium alloy is an alloy based on magnesium and also includes other elements, which has high strength, large elastic modulus, good heat dissipation and shock absorption, greater impact load bearing capacity than aluminum alloy, and excellent resistance to organic and alkali corrosion. CNC machining service of GREFEE metal cnc Main application industry of magnesium…

Material selection of the injection molding automotive parts

Material selection of the injection molding automotive parts Posted on : July 18 , 2022 By  GREFEE Jump to Section >>General plastic >>Engineering plastics >>Special plastics The raw material has a broad range, which is divided into the interior, exterior and functional parts in terms of the automotive plastic injection molding parts. The plastic is classified into three types, general plastics, engineering plastics and special plastics according to the various properties. General plastic It generally refers to plastics with large production…

PC Injection molding process and screw selection

PC Injection Molding Process and Screw Selection Posted on : July 21 , 2022 By  GREFEE The PC material has high strength, good transparency, low molding shrinkage rate, and high process ability, which is widely used in electronic devices and industrial parts fields. PC materials has excellent features with high transparency and impact rigidity, and deformation resistance, wide using temperature range. PC injection molding products are being used a broad range of products since it provides remarkable aesthetic value and…

Precision injection molding solutions

Precision injection molding solutions Posted on : Aug 15 , 2022 By  GREFEE What is precision injection molding? The high precision injection molding refers to an injection molding method of which  the  dimensional repetition accuracy of  the injection molding parts is very high, resulting in hard to achieve the requirements with general injection molding machine and ordinary injection molding processing. What distinguishes the high precision injection molding from the ordinary injection molding is that the technology of using precision plastic parts…

Issues in Processing Large Scale Injection Molding Mold

Issues in Processing Large Scale Injection Molding Mold Posted on : July 25 , 2022 By  GREFEE Nowadays, the demand for large-scale injection molding mold is increasing.  From the flat screen TV to car dashboard, the designer always seeking the improvements in the dimension and complexity of the mold making. However, not every manufacturer can make large scale injection molding mold as it includes many difficulties and is hard to process.  Issues of large scale injection molding mold The shapes…

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