What is a cavity in molding? The sequence of events during the injection mould of a plastic part is called the injection moulding cycle. The cycle begins when the mould closes, followed by the injection of the polymer into the mould cavity.

What is used to make cavity in the mould?

Top plate—It is used to clamp the top half of the mold to the moving half of the molding machine and is usually made of mild steel. Cavity plate—The plate used to create a cavity (via a gap) that will be filled with the plastic material and form the plastic component. Usually made of mild steel.

What are plastic molds used for?

Injection moulding is used to create many things such as wire spools, packaging, bottle caps, automotive parts and components, toys, pocket combs, some musical instruments (and parts of them), one-piece chairs and small tables, storage containers, mechanical parts (including gears), and most other plastic products

What's the difference between mold and cavity?

The injection molding process

Injection molding begins with creating the mold itself. ... The mold may feature either one cavity or multiple cavities, each of which can be used to create a single part. As such, a single-cavity mold produces one product per cycle, while a multi-cavity mold produces more than one.