Injection Molding

About Mold Building Basics

About Mold Building Basics

The foundation of the injection molding process is the mold itself. The most common style is the straight-pull mold. This mold has two halves, a core, and a cavity. The halves of the mold, usually made from steel or aluminum, are held together in the molding press by mechanical clamps or hydraulic pressure. Molten plastic then fills the cavity to create the desired part. After the plastic cools, the halves of the mold are pulled apart.

About Injection Molding Terminologies

About Injection Molding Terminology

AGING − Change of a material over time, which may lead to improvement or deterioration.
ALLOY − Composite material produced by blending polymers or copolymers with other polymers or elastomers.
ANNEAL − To heat a molded plastic piece and slowly then cool it to relieve stresses.
ANTISTATIC − Agents that are added to a molding material to make it less conducting.
A-SIDE − The mold half that mounts to the fixed side of the injection molding press. Resin is injected into the part cavity via the sprue through the A-side, which is also called cavity side of the mold.
AUTOMATIC MOLD − A mold that goes through the entire molding cycle without human help.

Scroll to Top