A thermoplastic is a material that a relatively high

temperature, it becomes deformable or flexible: if it

melts when heats up and repeats in state of

transitional glass when enough.

Most thermoplastic are high molecular weight

polymers. The best used its: Polyethylene (PE),

Polypropylene (PP), Polybutylene (PB), Polystyrene

(PS), Polymethylmethacrylate (PMMA), Polychloride

vinyl (PVC), Ethylene Polyethylene (PET), Teflon (or

polytetrafluoroethylene, PTFE) and Nylon (a type of

polyamide).

Injection molding is a semi-continuous process

which consists of injecting this type of polymer

found in a closed mold with certain shapes and

dimensions, subjected to pressure and cold to form

the desired piece.