Tag - calculating clamping force

Injection Molding Clamp Force Requirements

In plastic injection molding, clamping force is required to hold the mold halves together while they’re being filled, under pressure, with the molten plastic. The force required by the injection molding machine to hold the mold together is expressed in clamp tonnage. A “200 ton” machine, for example, is capable of creating a clamping force equivalent to a total of 200 tons. So, how do you know how much clamp tonnage, and therefore which injection molding machine, is required for a [...]

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How to Calculate Clamping Force for Injection Molding

Image credit: CustomPartNet Clamping force refers to the force applied to a mold by the clamping unit of an injection molding machine. In order to keep the mold closed, this force must oppose the separating force, caused by the injection of molten plastic into the mold. Normally, the force rating is stated in tons, e.g. a 200 ton machine is capable of producing a maximum clamping force equivalent to a total of 200 tons. The calculated tonnage can be used [...]

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