What is insert moulding

Insert moulding- Put insert inside before Moulding

What is insert moulding? Insert moulding is putting insert when it is moulding, the insert is a metal object or ceramic any hard part, which is must be able to withstand the high-temperature and pressure of the injection moulding process.such as a pin, blade, threaded rod, electrical contact, wire, etc.

Insert moulding is often used to join the insert and plastic together more securely than assembly allows. Moreover, it often eliminates post-moulding assembly and saves the additional cost incurred in a secondary operation.  Such as Plug, USB Flash and Connector etc.


  • Faster Assembly
  • More Stronger
  • More Beautiful
  • Cost-Effective

*Special Notes:

It should be make fixture when the  QTY of insert part is over 4 pcs. As it could save much time for putting.

Insert Moulding Samples


Difference between Insert moulding & Over moulding

Most people are confused about this two kinds of moulding, specialized the sales in this field.

Over moulding is when one material being is moulded over a second material. The base layer is moulded first and the additional plastic layer(s) are moulded over and around the original part – resulting in a single, finished product.

In a word, Insert Moulding is two different material, metal and plastic, metal is inside and plastic is around. Over Moulding is two layers. The outside plastic is soft, such as TPE or TPU.

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