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245. About the plastics manufacture

The plastic molding injection is an industrial production process of the type of merger, in which liquid material is placed in a permanent mold that, aided by a force of "injection". Generally, the injection occurs at very high pressures and temperatures that enable the flow of the "plastic" material in the appropriate section of the press itself. The plastic molds are kept hydraulically or mechanically closed in special presses for molding. The pressures are around hundreds bar.

The most used process to produce mass series objects is plastic molding. This is done with special presses, presses with thermoplastic injection that melt the plastic pellets and inject plastics at high speed and pressure in the molds.

The injection molding is considered one of the most economical processes of plastics transformation.

Plastics are widely used worldwide in thousands of products and processes. Without the plastics there would not be a lot of daily use items that we take for granted, often making our life much less comfortable and practical.