• Advantages of using small gate for injection molding-2 Jul 23, 2020
    ③Because the small gate has a small volume and fast freezing, when producing certain products, it is not necessary to wait for the entire solidification of the product after the small gate is frozen. As long as the external cured layer has sufficient strength and rigidity, the product can be demolded, thereby Shorten the molding cycle and improve production efficiency. ④In the multi-cavity unbalan...
  • How many under-cut structure you have seen?
    How many under-cut structure you have seen? Jul 23, 2020
    In plastic product, there are some under-cut structure. How many under-cut structure you have seen? Some product only have one under-cut, some product has more than one under cut surface, some product whole four surroundings has under-cuts, some product has under-cut in the under-cut. What's the meaning of under-cut? Under-cut means when you see from the top view, the highest point is the referenc...
  • Main points related to the design of gear mold
    Main points related to the design of gear mold Jul 23, 2020
    1. Gate: generally, 3-point or 6-point is used for balance. For micro gears, usually single point is used. 2. Mold cavity: usually for 1~4 cavities. Small gear can reach 6 or 8 cavities; Different shapes of gears could be 3 cavities. The most representative is 4 cavities. 3. Ejection: normally use center ejector sleeve and ejector pin. For the helical gear, a bearing must be added to assist the ej...
  • What is thin-wall injection Jul 23, 2020
    Thin-wall injection molding technology is also called thin-wall plastic injection molding technology. There are three types of definitions: The ratio of flow length to thickness L/T, that is, the injection ratio of the flow length L from the melt into the mold to the farthest cavity of the cavity that the melt must be filled with the corresponding average wall thickness T is 100 or 150 is thin-wal...
  • How much do you know about the shrinkage of common plastic raw materials?
    How much do you know about the shrinkage of common plastic raw materials? Sep 21, 2020
    How much do you know about the shrinkage of common plastic raw materials? Different plastic materials have different shrinkages. Today we will talk about the most commonly used material shrinkage. ABS : 0.5% PC: 0.5% PMMA: 0.5% PS: 0.5% PC+ABS: 0.5% PE  : 2% PP : 2% PA: 2% PVC : 2% POM : 2% When we make plastic mold, we should consider the plastic material shrinkage, otherwise the product wil...
  • High temperature resistant plastic material-PPS Jul 27, 2020
    Polyphenylene sulfide is abbreviated as PPS. It is a new high-performance thermoplastic resin. It has the advantages of high mechanical strength, high temperature resistance, chemical resistance, flame resistance, good thermal stability, and excellent electrical properties. Widely used in the fields of electronics, automobiles, machinery and chemicals. PPS is a special engineering plastic with exc...
  • Injection mold gate type and selection-1 Sep 21, 2020
    The gate of the plastic mold refers to a section of short runner connecting the runner and the strong, which is the entrance of the resin injection cavity. The shape, quantity, size and location of the gate in the mold will have a great impact on the quality of the plastic parts. Therefore, the selection of the gate is one of the key points of the plastic mold design. The gate will be introduced i...
  • Do you know what is 3D Printing?
    Do you know what is 3D Printing? Sep 21, 2020
    Do you know what is 3D Printing? 3D Printing is a kind of rapid prototyping technology. It is a technology based on digital model files, using adhesive materials such as powdered metal or plastic to build objects by printing them layer by layer. The first 3D printer was founded in 1986 by Charles Hull. Its working principle is same with the ordinary printer. There are some liquid or power in the p...
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