• gas assisted injection mold
    gas assisted injection mold Dec 13, 2019
    Gas Assisted Molding refers to an injection molding technology in which inert high-pressure nitrogen is injected at the appropriate time (75%~99.9%) when the plastic is filled into the mold cavity. The principle of gas assisted injection molding includes:  1.Metrological management  2.Press the high pressure nitrogen gas directly into the mould cavity through gas assisted controller. 3.T...
  • Uneven color of injection molded parts Dec 13, 2019
    The color unevenness is that the color of the product surface is different, and it can appear near and far from the material, and occasionally in the sharp-edged material flow area. Reason: 1. Color unevenness is caused by uneven pigment distribution, especially when color is added by color masterbatch, toner, or liquid colorant. At temperatures below the recommended processing temperature, the ma...
  • Common injection molding product defects and solutions-3 Dec 13, 2019
    Short shot-2 Solution: 1.Restart the machine after the injection is interrupted, the previous pieces may be scrapped. 2.Improve injection and shrink pressure. 3.Improve injection volume and injection speed. (Injection pressure must be sufficient) 4.Increase the mold temperature. 5.Increase the material temperature. 6.Clean the air-removal system of the mold. 7.Check if the pad is sufficient. 8.Adj...
  • Injection Molding Machine System Dec 13, 2019
    Today, we are going to talk about the plastic injection machine system, The daily products are basically molded by plastic injection machine,  Some of them are produced by full automatic, some are by  half manual,  It depends on the customer's request or the product feature. The injection molding machine system include seven systems, as below: 1. Plastic injection system, 2. Opening...
  • The reason of air traps of a molding product
    The reason of air traps of a molding product Dec 23, 2019
    The reason of air traps of a molding product: 1.Poor venting of the mold 2.The plastic raw material break down 3.Mold design is unreasonable(such as sprue is too small) 4.Injection speed is too fast How to improve air traps: 1.Improve the mold venting  2.Lower down the hopper temperature 3.Improve mold design (like enlarge the sprue) 4.Lower down the injection speed
  • Common injection molding product defects and solutions-4 Dec 23, 2019
    Common injection molding product defects and solutions-4 shrink the reason 1.The holding pressure is too low. 2.The holding time is too short. 3.Injection speed is too fast or too slow. 4.The mold surface temperature is too high. 5.The water size is too small. 6.The flow path design process is too long. 7.The bone thickness of the product is too thick. 8.The melt temperature is too high. Solution:...
  • Insert Molding Development Considerations Dec 27, 2019
    INSERT MOLDING is a type of mold in plastic mold, commonly known as insert mold. There are some differences between this type of mold and ordinary plastic molds in the selection of plastic materials, mold design and development testing, which are described in detail below. Inserts in INSERT MOLDING molds are usually stamping parts or threaded inserts. Before injection mold clamping, they must main...
  • What is Mold Texture Technology?
    What is Mold Texture Technology? Jan 16, 2020
    Texture is a very common process when we build a mould. What is mold texture processing? we are going to talk about this today. Texture is a process that etching mould for reaching the surface requirement(like fog surface, pattern,and so on). If you only need small natural patterns, such as fog surface, then only need electronic discharging. Texture can improve the product a little bit stick mold ...
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