Injection molding is a method of producing shapes for industrial products. Products are usually used rubber injection molding and plastic injection molding. Injection molding can also be divided into injection molding molding method and die casting method.
Injection molding machine (referred to as injection machine or injection molding machine) is the thermoplastic or thermosetting material using plastic molding molds to make a variety of shapes of plastic products, the main molding equipment, injection molding is achieved through the injection molding machine and mold.
Main types
1. Rubber injection molding: rubber injection molding is a rubber material directly from the barrel of the machine into the model vulcanization production method. The advantages of rubber injection molding: although intermittent operation, but the molding cycle is short, high production efficiency eliminates the embryo preparation process, less labor-intensive, excellent product quality.
2. Plastic injection molding: plastic injection molding is a method of plastic products, the use of molten plastic pressure into the plastic products mold, cooling and molding want to get a variety of plastic parts. There is a mechanical injection molding machine specifically for injection molding. Currently the most commonly used plastic is polystyrene.
3. Molding injection molding: the resulting shape is often the final product, in the installation or as a final product before the use of no other processing. Many fine details, such as projections, ribs, and threads, can be molded in a single step of injection molding.
Advantages and disadvantages
Injection molding is also known as machine-made shoes, after the upper is tied on the aluminum last, generally by the rotary machine directly injected into the PVC, TPR and other materials, a one-time formation of the sole, and nowadays there is also PU (chemically known as polyurethane) injection molding (the machine and the molds are not the same as the general injection molding).
Advantages: Because it is machine-made, the output is large, so the price is low.
Disadvantages: if more styles, change the mold is more troublesome, the shoes are difficult to shape, no cold sticky shoes exquisite workmanship, so generally suitable for sole style single order.