Injection Molding

In injection molding material is fed through a hopper into an extruder, where a reciprocating screw mixes and melts the material then injects it into a mold. Injection molding machines, or presses, are rated by tonnage, which expresses the amount of clamping force that the machine can exert to keep the mold closed during the process. Most polymers can be injection molded. The types of products that are molded are wide and varied, ranging from large automotive parts to tiny gears. Navigate from the Injection Molding Zone to more specific topics on all-electric/hybrid machine technology, liquid-silicone rubber molding, micro-molding and multiu-component molding.

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Part 2: How to Prevent Nozzle Tip Leaks

Your very costly mold in that very expensive press is relying on the performance of a $20 nozzle tip that no one ever checks, and has a high probability of not doing its job. Stop learning from your mistakes and start learning how not to make them.

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Data Driven, Employee Owned

Approaching its seventh decade in business, PTA Plastics has shifted its location and remade its customer base since its founding in 1953, but many things have not changed in the intervening years, including an emphasis on people and leading-edge technologies.

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Tooling: ‘Reverse Cube’ Puts New Spin On Two-Component Molding

For two-component molding, splitting the cube mold into halves that rotate in opposite directions provides thermal isolation and long cooling times for both materials.