types of molding & forming


extrusion

Material is shaped by being forced through a die.

blow molding

A softened tube is extruded into a mold, then inflated. This is how bottles are made.

vacuuum forming

Softened material is drawn into a mold.

compression molding

A heated mold is squeezed around a pre-formed blank. It is slower, but the material does not flow as far.

injection molding

A power or pellet is liquified, injected into a mold, cooled under pressure, and ejected. It is fast and easy to automate, with little waste.

back to injection molding



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