Moulding

INJECTION MOULDING

Heated granules injected by hydraulics. NO WASTE. Used for detailed plastic goods.

COMPRESSION MOULDING



The stages are as follows:

1. The mould is heated.
2. A 'slug' or piece of the selected plastic is placed into the mould and warms up.
3. The hydraulic press begins to move down when the plastic has reached the correct temperature..
4. As the upper and lower mould meet, the plastic is compressed into the shape of the mould.
5. The upper mould moves upwards and the plastic piece (in this case a tray) is removed.

Rotational Moulding

During the heating stage, the mould slowly rotates in two planes (bi-axial rotation). Heat transfer causes the plastic charge inside the mould to melt and uniformly coat the interior of the mould.

During the second stage, the mould moves to the cooling station where it is cooled by air and/or water spray.
In the final load/unload stage, the part is removed from the mould and a new charge of material is loaded into the mould.