1. Prepare the mold

The polymer resin (pill) to the drill (screw) is a large single-bottomed container. The electric or hydraulic motor is responsible for passing the spiral pellets in the heating cylinder of the feed through the spiral groove. The mold cavity in front of the door restricts flow into the mold and restricts backflow. The resulting pressure pushes through the groove to the door and also generates heat inside the cylinder, helping to melt the polymer and prepare it for injection into the mold.

2. Inject polymer melt into the mold

With the drill at high pressure inject the polymer melt in the mold (usually 10,000-30,000 psi), hold it, and add more melt, ensuring that the cooling and solidification shrinkage does not leave the gap in the final product. Eventually the door solidifies and isolates the mold injection cylinder.

3. Cool the mold

The mold is usually cooled by air or water. Sometimes the small holes are boring to the mold, allowing the coolant (such as water) to circulate. The cooling of the injection mold consumes about 85% of the cycle time of the entire process.

4. Unloading / demoulding

After solidification, the sandwiched mold halves are closed together and opened to allow the part to be removed. The injection molding process can be repeated.

Injection molding, plastic molded products:

Plastic, it is no exaggeration to say, has become the cornerstone of our society. From plastic we do many things, it is hard to imagine what our life would be like without invention. So many of our daily products are made of plastic, and it is easy to understand why plastic injection molding is a huge industry.

About 30% of plastic products use an injection molding process. 30% of a large number of these products are made by using custom injection molding technology. The six steps involved in the injection molding process, after the prototype has been approved and after it has been approved.

The first step in the injection molding process is the clamping of the mold. This clamping device is the three standard parts of an injection machine. Mold, clamping device and injection device. The clamp is holding the mold while melting the plastic injection, the injection mold is held under pressure while the plastic cools.

Next is the injection of the actual molten plastic. Plastics usually begin this process as pellets, which are put into a large funnel. The balls are then fed into a cylinder; they are heated here until they become molten plastic and are easily forced to mold. The plastic is in the mold and it is clamped under pressure until it cools.

The next few steps include the residential phase, which is to ensure that all mold cavities are filled with molten plastic. After the residential phase, the cooling process begins and continues until the plastic becomes a solid internal form. Finally, the mold is opened and the newly formed plastic part is expelled from its mold. Any additional plastic molds other than the part.

As with any process, there are advantages and disadvantages with plastic injection molding. The advantages of most companies outweigh the disadvantages; including the ability to maintain a high level of production, the ability to replicate products with high tolerance, and the lower labor costs for most of the work done by machines. Plastic injection molding also has the benefit of reducing waste costs because the mold is so precise.

However, the disadvantage can be an agreement between small companies that want to use plastic injection molding to produce parts. With these shortcomings, the equipment they need is expensive, therefore, increasing operating costs.

Fortunately, for these small companies, there are companies specializing in custom plastic injection molding. They will simulate the mold with accurate specifications, run it through the complete process and the completed work together with the estimated completion of the work to the customer.