Injection Molding

The reason why the POM and PVC materials produced by the old injection molding machine often scorch

Generally speaking, the barrel, screw and check ring of the old injection molding machine mostly wear to different degrees, and the cooperation gap between them will be relatively large, especially the injection molding machine that often produces POM and PVC Big. Due to the increased gap, during injection, part of the melt will flow back [...]
Injection Molding, Plastic Mold Case, Plastic Molding Design, Plastic Parts

Application and skills for adjusting the filling speed of each cavity

In a multi-cavity mold, the filling speed of various cavities is often uneven (unbalanced). Some cavities are filled quickly, and some are filled slowly. At this time, injection parts with fast filling are prone to problems such as overflow, white top and trapped gas, while slow filling is prone to shrinkage or insufficient filling. The [...]
Injection Molding, Plastic Mold Case, Plastic Molding Design, Plastic Parts

Solutions to the phenomenon of dragging of electroplated molds during injection of products

In order to prevent the core and cavity of the mold from rusting, the cavity parts of some molds need to be electroplated and make their surfaces look very bright, but the product is often smeared when the transparent plastic is injected (scraped by the core when demolding) Out of obvious patterns). In fact, the [...]
Injection Molding, Plastic Mold Case, Plastic Molding Design, Plastic Parts

Reasons for the guide pillar and guide bush to be easily engaged after disassembling and installing a large mold

The lifting of larger molds often needs to be hoisted by cranes. Because of the need for mold repair in the production process, only half of the molds need to be disassembled. When the repair is completed and the half of the mold is hoisted and installed, the single side mold is often Too tight [...]
Injection Molding, Plastic Mold Case, Plastic Molding Design, Plastic Parts

How to eliminate the ejector pins to break during injection molding of K material

At high temperatures, the friction between the K material (styrene-butadiene copolymer, SB in English, commonly known as "K material") and the surface of the metal mold is very large, so the release resistance of the K material injection molded parts will be quite large, resulting in production It often happens that the ejector pin and [...]
Injection Molding, Plastic Mold Case, Plastic Molding Design, Plastic Parts

Several problems about trapped gas and its improvement measures in injection molds

1, The reason why the trapped gas of PP and PVC injection molded parts is difficult to solve by adjusting the machine When the injection molded parts have trapped gas problems, they usually appear to be filled with dissatisfaction, or scorched, whitish, and have coarse gas lines. Many trapped gas problems can generally be solved [...]
Injection Molding, Plastic Mold Case, Plastic Molding Design, Plastic Parts

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