Injection Molded Parts Without Sinks

The 2-shot injection molding process creates the first plastic component, and the material molded round it, using a single mold injection and a 2-shot injection molding machine. 2-shot machines have two-barrels (one for each material) and they have the ability to rotate the mold. The machine injects the first shot material into cavities on one side of the mold, rotates the mold 180 degrees, and then injects the second shot material onto the first shot. The first and second shots occur at the same time. When the mold opens, it ejects the completed parts from the second shot cavities and it rotates the mold to position the first shot for the second shot. This is accomplished in a machine running in an automatic cycle. Because the 2-shot injection molding process is fast and highly repeatable, the shrinkage of the first shot is very consistent and two materials can be molded together with virtually no flash. 2-shot molding is the process of choice when molded-in graphics or other fine details are required. The elimination of the shrinkage variable allows 2-shot molding to produce details impossible to achieve with over-mold injection molding.

The details of the design in a large part determines the cycle time of the machine. The cycle time is the amount of time it takes from the time a part is ejected from the machine to the time the next part ejects. Smaller parts require less "fill time", the time it takes for the machine to push the melted resin into the mold, and thinner part walls cool faster reducing the "hold time". The customer is charged a set up fee which pays for installing the mold into the injection molding machine, and getting it ready to mold parts. Typically it runs a couple of hundred dollars and depends on things like how big the mold is and which accessories will be needed etc.

The ability to reverse engineer existing molds and molded parts allows us to build new and improved custom tooling for the customers. Digital data files and computerized machining are used almost exclusively for tooling of plastic injection molded custom molds. Computerized plastic injection molding machines in China are used almost exclusively for production. For plastic injection molding in China aluminum short-run rapid prototype molds are faster and are an economical solution for customers needing to prove out new part and product designs prior to production tooling. The company specializes in plastic injection molding in China to produce a wide variety of products from high-tech parts with very tight tolerances to children's toys and entrepreneur's inventions. Some examples of these products are pictured to the right.

Injection Molding is the most advanced typical method of molding rubber products. Injection molding produces the most consistent results by automating all aspects of how the rubber gets into the mold. In injection molding, the rubber is worked and warmed and then squirted into the mold at controlled speeds, pressures and temperatures. Advantages of Injection Molding are: Provides the maximum product consistency, Allows the most control of flash, Because the rubber is warmed before going into the mold, fastest cycle times, Disadvantages of Injection Molding.

The corporation specializes in plastic injection molding, injection molding plastics design, custom injection molded plastics manufacturing in China and Taiwan at their manufacturing facilities. CAD plastic injection molding designer services are performed in Taiwan assisted by their engineers in the US. Rapid prototyping capabilities also compliment their plastic injection molding in China capabilities for customers in need of SLS prototypes quickly, for modeling and proof molded of design or concept. Their rapid prototyping, SLS and custom molding and plastics machining capabilities can get your new designs in solid form in a short amount of time.