What is molding?

The information comes from:the Internet posted on:2020-07-29

Molding or moulding is the process of manufacturing by shaping liquid or pliable raw material using a rigid frame called a mold or matrix.This itself may have been made using a pattern or model of the final object.

A mold or mould is a hollowed-out block that is filled with a liquid or pliable material like plastic, glass, metal, or ceramic raw materials. The liquid hardens or sets inside the mold, adopting its shape. A mold is the counterpart to a cast. The very common bi-valve molding process uses two molds, one for each half of the object. Piece-molding uses a number of different molds, each creating a section of a complicated object. This is generally only used for larger and more valuable objects.

The manufacturer who makes the molds is called the mold-maker. A release agent is typically used to make removal of the hardened/set substance from the mold easier. Typical uses for molded plastics include molded furniture, molded household goods, molded cases, and structural materials.

Types of molding include:

1.Blow molding

2.Powder metallurgy plus sintering

3.Compression molding

4.Extrusion molding

5.Injection molding


Reaction injection molding

7.Matrix molding

8.Rotational molding (or Rotomolding)

9.Spin casting

10.Transfer molding


Vacuum forming, a simplified version of thermoforming

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