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Plastic injection is a process that uses injection molding. This method comes from the use of the thermoplastic properties of various materials, which makes it possible to inject a softened plastic into a mold. Thanks to this technique, it is possible to produce many types of plastics in large quantities. Discover the detailed steps of this technique in the lines that follow.
The mold design phase
The manufacture of a mold is based on the needs and criteria of the customer. Once the characteristics of the model have been provided, the design of the mold begins with the production of the models. If previously they were made from paper, now they are made from software designed for this purpose. This technology makes it possible to simulate the molding and to achieve a real 3D projection. After the simulation, the next step is to design the mold. The latter has two parts: fixed and mobile. The fixed part is called the footprint. It fixes the part on the machine. The mobile one makes it possible to recover the part, when the manufacturing is finished. Once the mold is ready, plastic injection can begin.
Plastic injection, ejection, and mold release
Injection molding uses thermoplastic granules, which are poured into the feed hopper. It drives the pellets through an endless screw. In this step, the plastics will be heated and melted. Once the plastic is in liquid state, the injection nozzle of the machine opens. The molten materials will be pressure injected into the mold by the press. This injection lasts only a second. At the end of this process, the mold gradually cools down. Once the mold has cooled, the next step is to eject the part. For small plastic parts, demoulding is easy. They eject themselves while the machine is running. For large parts, demoulding should be done using an ejector. The latter consists of a metal bar, which will push the parts. need for injected parts and can be used again.
Checking the finished product
When the demoulding of the parts is completed, a check to see if the finished products meet the customer’s requirements is necessary. This step is carried out by machines designed for this purpose. Even though these robots have already done the verification, quality control must be performed by a human. This procedure separates usable parts from those that are defective. If any parts have manufacturing defects, they will be set aside. They will not be destroyed, because they can be recycled. Indeed, these defective parts have thermoplastic properties that can be used in the design of other products. Once the inspection is complete, the parts will be delivered. When they are received, these products go through a final check, which will be carried out by the customer. In the event that the parts do not suit him or do not meet his requirements, he is entitled to refuse them. In short, plastic injection has many advantages. This method makes product design easier and faster. In fact, the liquid plastic injected by pressure quickly follows the shape of the mold. In addition, this injection lasts only a second. This process also makes it possible to have a quality product, given the precision of the machines that perform the operation. The dimensions of the products are scrupulously respected and they are often free from defects. This technique also saves raw materials, since This method makes product design easier and faster. In fact, the liquid plastic injected by pressure quickly follows the shape of the mold. In addition, this injection lasts only a second. This process also makes it possible to have a quality product, given the precision of the machines that perform the operation. The dimensions of the products are scrupulously respected and they are often free from defects. This technique also saves raw materials, since This method makes product design easier and faster. In fact, the liquid plastic injected by pressure quickly follows the shape of the mold. In addition, this injection lasts only a second. This process also makes it possible to have a quality product, given the precision of the machines that perform the operation. The dimensions of the products are scrupulously respected and they are often free from defects. This technique also saves raw materials, since The dimensions of the products are scrupulously respected and they are often free from defects. This technique also saves raw materials, since The dimensions of the products are scrupulously respected and they are often free from defects. This technique also saves raw materials, since defective products are recyclable.
