Category: News
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The refined management system of an injection molding company
Four key points in the refined management system of an injection molding company The management of the production site includes onsite material management, plan management, equipment management, tool management, personnel management, production scheduling management, 8S management, etc. More attention should be paid to the management of details that are considered minor in daily life. 1.…
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How to Find A Good Mold Maker in China?
After a new product is designed, a lot of companies would be ready to develop the plastic injection mold for small-scale trial production, to see how the market will respond before making a decision on massive production. At this point, it will be of great importance to select a proper plastic mold manufacturer. Personally, I’ve…
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PMMA Plastic Injection Molding Process
PMMA, i.e. polymethyl methacrylate, also known as acrylic or organic glass, is a transparent thermoplastic with a relative density of 1.19, which is higher than that of water. With a high surface glossiness, the PMMA products are characterized by strength, rigidity and toughness. The process features of PMMA: due to the high viscosity, PMMA has…
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Weld lines defects in plastic injection molding process
Weld Lines The flowing defects on product surface or the linear defects that are caused when melt fronts meet each other after splitting. Weld lines refer to the lines that occur on a plastic product surface when the cold slug melts. In areas of mold cavity where the molten plastic meets inserts or holes, areas…
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PVC Plastic Injection Molding Process
PVC, i.e. polyvinyl chloride, is a multi-component plastic material that is often applied in the form of pellets. In addition to the previously mentioned PVC resin powder, some other components are needed, e.g. adding plasticizer to improve its fluidity, adding stabilizer to improve its thermal stability, adding lubricant to improve its mold releasing performance, as…
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Optimum Injection Speed in Plastic Injection Molding
Optimum Injection Speed The optimum injection speed allows us to maintain minimum injection pressure under given conditions. Injection speed should vary with cavity thickness. Compared with the thick ones, the thin ones possess a smaller effective flow cross-section. As a result, we need to raise injection speed, improve overall deformation rate and increase frictional…
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Injection pressure for plastic injection molding
Injection Pressure Injection pressure refers to the force that helps molten resin overcomes the resistance to flow. When the mold screw reaches changeover to holding pressure, the pressure on screw front end is referred to as injection pressure. Fill the entire cavity with a pressure lower than the max. injection pressure of the injection molding…
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What is the ejector block in plastic injection mold?
Ejector Block 1) Direct ejection can be in 2 styles: ejector and ejecting block + ejector pin. 2) The ejector is designed with gradients on its four sides: 1°on the side that clings to the product and 3° on the other three sides. 3) When the core of plastic injection mold is integrated, the distance…
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What is nylon lock and their function?
Nylon lock A Nylon lock are used to lock A plate and B plate before runner are released out from A plate。Standard components :PLB type，the diameter depends on mold base size ： When the mold plate is thick, we need to make venting for nylon lock: All copyright reserved by plastic mold…