Precision Plastic Injection Molding
To design a mold that is been able to manufacturer high precision injection molded parts is an art or craftsmanship combined with years of engineerign experience , only done by a few injection mold makers . It requires super fine materials, tool making by EDM and cnc machining
Not only the real time plastic injection molding process is crucial the parts design, mould design and tooling or also essential just as crucial, In the tool design phase high end steel grades can be considerate that allow many cycles and resistant against extreme temperature cycles, so critical dimensions of the parts stays stable
Besides the tool or mould design , the part design is critical. Here is where it- a successful and stable plastic part- all starts.
You cannot get precision plastic parts if the part design is poorly engineered. Our advice is to follow up Triple-c s part design rules (Such as : don not use sudden wall thickness changes, smooth transitions and so on).
Than material selection has to be made and the material selection process is also critical for precision plastic parts. Some material have large shrinkage (what is shrinkage) and some a low Our mold and part designers advice selecting material with a low shrinkage value of course combines with the right mechanical (stiffness , strength ) and other important properties ( weather resistant)
Needless to say, the plastic molding equipment has to be maintained regularly, but that is with all kinds of injection molded parts, not only the small precision pieces.
And finally the people of an injection company that fits all these puzzles pieces together are actually the most important and they
have to have has right procedures in place to allow a total high precision injection molding.