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PLASTIC MOLDING METHODS: extrusion
Jan 26, 2018


This technique extrudes, or forces out, materials through a die to create shapes using constant cross sections like window sections, drinking straws, pipes, and seals. This method is used to form 2D shapes.

The Process

The machine motor, extrusion machine, turns a screw that feeds plastic through a heater. The granules in the plastic melt into liquid, which is pushed through a 2D die opening tool. This forces the material into a tube shape based on the specific shape on the die. The material forms a solid tube shape after cooling. This product is now ready to be cut into required sizes.

Advantages

Some of the advantages of the extrusion process are:

· Shaping hard and brittle materials.

· Favorable for the creation of atypical cross-sections.

· Guarantees a smooth finish on the end product.

· Alterations to the product after it has been removed from the extruder.

· Complex shapes can be produced with varying thickness, textures, and colors.


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