what is injection moulding | A Plus Plastics

What is Injection Moulding

A Plus Plastics specialises in plastic injection moulding (also spelled molding), a manufacturing process for producing parts from both thermoplastic and thermosetting plastic materials.

Material is fed into a plastic injection moulding machine where it is heated, mixed, and forced into the mould cavity where it cools and hardens to the configuration of the cavity. A Plus Plastics has fifteen plastic injection moulding machines with a capacity of 1400t up to a 9kg shot, and also boast our own tool room which has numerous abilities in plastic product design and tool manufacturing.

The A Plus Plastics design team frequently works in partnership with leading industrial designers, and moulds are made by our tooling team and are precision machined to form the features of the part or product. Injection moulding is widely used for manufacturing a variety of parts and products from the smallest component to complete body panels of cars.


A Plus Plastics can process basically any engineering polymer that can be injection moulded, including but not limited to the following:

  • ABS
  • ASA
  • GPPS
  • HIPS
  • HDPE
  • LDPE
  • MIPS
  • PA6 (unfilled and GRF)
  • PC (unfilled and GRF)
  • PETG
  • PMMA
  • POM
  • PP
  • PC
  • PPMS
  • PPO
  • PPS
  • PTFE
  • PUR
  • PVC
  • SAN
  • TPE's