Injection molding can be divided into two types: thermoplastics and thermosetting plastics.
Thermoplastics are divided into two types: amorphous and crystalline.
Amorphous thermoplastics are usually hard, bright and rigid, and have low shrinkage and low impact.
Crystalline plastics also contain substances contained in amorphous plastics, which are called semi-crystalline thermoplastics in injection molding. This type of plastic is usually soft and tough, but has thermal deformation than amorphous thermoplastics. This material is generally translucent or opaque, and they have a larger shrinkage rate and high specific heat.
Plastic injection molding is a method of plastic products. The molten plastic is injected into the plastic product mold under pressure, and the desired plastic parts are obtained by cooling and molding. The most commonly used plastic at present is polystyrene. The resulting shape is often the finished product, and no other processing is required before installation or use as a final product.
Since most of the injection molding methods are dissolving processes, such as injection molding and extrusion. Therefore, the fluidity of the plastic is relatively high, which is very important in the injection molding process.
Summary: In the injection molding process, especially fine injection molding, the control of product temperature is important, which has a great impact on the quality of injection molded products.
No other processing is required before the finished product is used.
