Moulding is the process of manufacturing by shaping liquid or pliable material using a rigid frame called a mould or matrix.
There are 5 types of plastic moulding -
Extrusion Moulding -
With extrusion moulding, hot melted plastic is pressed through a shaped hole to create a lengthy shaped plastic part.
Compression Moulding -
This method involves the raw liquid plastic being poured into a heated mould and then being compressed together to form the desired shape. The high temperature of the entire process ensures good strength in the final product.
Blow Moulding -
With blow moulding, the custom plastic parts come out hollow and thin-walled. This method is ideal for when the plastic part has to have uniform wall thickness.
Injection Moulding -
Injection Moulding is fairly similar to extrusion moulding. The difference here is that with injection moulding the melted plastic is injected directly into a custom mould. The injection is under high pressure so that the mould is filled and a solid part is made.
Rotational Moulding -
Also sometimes called rotomoulding, this method involves the resin or liquid being placed inside the mould and then being rotated at high speeds. The liquid then evenly covers the entire surface of the mould to create a hollowed part with all the walls evenly thick.