What is plastic injection moulding?

Injection moulding is a manufacturing process where heated plastic is forced into a mould cavity under pressure. A mould cavity is essentially a negative of the part being produced. The cavity is filled with plastic, and the plastic changes phase to a solid, resulting in a positive. Typically injection pressures range from 5000 to 20,000 lbs psi. Because of the high pressures involved, the mould must be clamped shut during injection and cooling. Clamping forces are measured in tons.

The moulding tools must be manufactured to high levels of precision and be robust enough to withstand the moulding process. Because of this, moulds are usually constructed in hardened steel but can be made out of aluminium when tooling life is not an issue.

Why Buy From DiBro Ltd?

A family and business connection with Cobalt Trading in Hong Kong, allows access to large capacity moulding on machines of up to 1500 tonnes in an ISO 9002 environment. Competitive pricing is maintained on very large parts using container transport.