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Injection molders, also known as plastic injection molders, are manufacturing machines that use a heating screw to melt plastic or rubber resin and deliver it through an injector pin into the mold. After the part is ejected from the mold, automatic cooling systems are used to cool it at the correct rate. The injection molding machines can be divided into four categories, and they are used in making a wide range of products, including bottle caps, containers, and toys.

Electric Plastic Molders

With electric molding makers, businesses can produce plastic parts quicker, quieter, and with greater accuracy. Some electric injection machines support computer-integrated manufacturing needs through 3D scanning. They are quite expensive as a full advanced electric molding machine with a touchscreen control panel can cost up to $67,000.

Hydraulic Molding Machines

Hydraulic plastic molding machines are ideal for small batch continuous production. They employ high-pressure hydraulic rams to clamp two halves of a mold together under pressure, then inject heated plastic into the interior space between them. Certain hydraulic injection molders feature control levers that change the pressure in the mold cavity, causing it to stretch or contract.

Tube Head Injection Molders

Tube head injection molders are ideal for producing plastic tubes with textured and embossed surfaces. They are also used to apply in-mold labeling and integral closures. These molding machines can also be used to make plastic products with tight diameters such as sticks and straws.

3D Molding Machines

3D molding machines are typically used for metal injection molding, in which metal powder and a polymer binder are heated and injected into a mold. This type of molding creates intricate 3D designs and can be used to make anything from vehicle parts to prosthetics and even toys.

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