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What is injection molding

Injection molding is one of the common molding methods for plastics. Many of the many plastic products around us are made from this. This time, I will explain the features and mechanism of injection molding, and a slightly special kind of molding method that is not found anywhere else.

The plastic material (resin) is melted, poured into a mold (injection), and hardened to form a shape (molding).Resin products, also called plastics, are light, durable, and easy to mass-produce, so they are used in a wide range of fields such as daily necessities, electronic devices, and machine covers.

Features of injection molding: High quality and mass production

As mentioned above, injection molding is a plastic molding method used in the manufacture of all commodities. However, the manufacturing method and features are known only to those who are involved in the actual manufacturing, but the principle is very simple. To put it very simply, it is a method of melting plastic at a high temperature of about 200 ° C and pushing it into a mold to cool and harden it.The feature is that once you make a mold, you can make a complicated shape with high quality. The biggest merit is its high productivity. The mechanization of current injection molding machines makes it possible to produce plastic products at surprisingly high speeds.

Depending on the type of product, fast products can be produced at a rate of one in a few seconds. It can be said that it is a very efficient molding method that can be said to be a symbol of the mass production system. Conversely, if the sales volume cannot be expected to exceed a certain level, it can be said that it is a molding method that is difficult to use due to the high cost of manufacturing the mold. Let's take a closer look at the mechanism of injection molding.