The gas-assisted injection molding system directly injects inert gas (usually nitrogen) into the melt plastic in the mold cavity through the sectional pressure control system, which makes the plastic part expand and cause hollowness, but still keeps the shape of the product surface. Gas-assisted injection molding can be regarded as a variant of hollow blow …

The gate is a short groove with a small cross-sectional area to connect the runner and the cavity. Therefore, the cross-sectional area should be small in order to obtain : Soon after the cavity is injected full, the gate will be solidified Simple demoulding The part ejection is completed, leaving only a few traces Makes …

In the process of injection molding, the bubble inside is a serious defect. Air bubbles in injection molded transparent parts will affect the appearance quality of products. At the same time, it will also reduce the strength of injection molded products. The bubbles are mainly produced in the process of injection molding: The raw materials …

One of the important reasons for the warpage of strip flat injection molding parts is the position of the gate on the injection molding parts. There are usually three positions of the gate on the strip injection molded part,and these will cause warpage of the strip-shaped flat injection molded parts.   For example (Figure A), …

In three forms it is important to consider how the costs of injection molding are determined:  To check if the commodity is competitive on the market, To recheck with evolving plastic fabrics, cavities, volumes or press measurements so that we can see if additional benefit is produced and To determine whether the molding costs of …

Polycarbonate injection molding Topworks is a professional manufacturer of poly-carbonates injection molding. We have more than 10 years of production experience in poly-carbonates injection molding We have rich experience in the production of extra wall thickness poly-carbonates and ABS/PC injection molding part. Our PC injection molding covers the following industries： Automobile parts Medical instruments Aerospace …

On plastic injection products, especially for raw materials such as ABS, PP and PC, you will often see shiny stress marks on the surface of products, such as injector pin stress marks, insert stress marks and stress marks of wall thickness difference. These apparent shiny, white markings are the result of internal stresses, which are …

If want to reduce or eliminate cracking of injection molded poly-carbonate, it can take two measures: Reduce internal stress; Or improve the cracking resistance of plastics. What can do to reduce the internal stress of the PC injection molding process ? Mold Temperature Increasing the mold temperature can reduce the internal stress. When the mold …

PC/ABS, mixture of Polycarbonate and acrylonitrile butadiene  ,is a thermoplastic plastics made of polycarbonate and polyacrylonitrile (ABS), which combine the excellent characteristics of the two materials, the injection-ability of ABS and the mechanical properties, impact strength, temperature resistance, ultraviolet (UV) resistance  of PC. 1. Silver Streak Silver streak is the most common problem of PC/ABS …

      PRECISION MACHINING? Precision Machining is a process to remove material from a workpiece like plastic mold component during holding close tolerance finishes. The precision machine has many types, including milling, turning and electrical discharge machining.  A precision machine today is generally controlled using a Computer Numerical Controls (CNC). Precision machining contributes parts …