Professional Insert Molding Services in China

Insert molding is a plastic injection molding process where a pre-formed component is placed into a mold and plastic is injected around it to create a single integrated part.

At CNMOULDING, we provide high-quality insert molding services in China, helping customers produce strong, reliable, and cost-effective components.

What is Insert Molding?
Insert molding involves placing inserts such as metal components into a mold cavity before injection.

During the process:

Inserts are positioned in the mold

Molten plastic is injected around them

The plastic solidifies, forming a single integrated part

This eliminates the need for secondary assembly.

Advantages of Insert Molding
Insert molding offers key structural benefits:

Strong Mechanical Bonding
Plastic tightly surrounds the insert, creating high strength.

Reduced Assembly Cost
Multiple parts are combined into one, reducing labor.

Improved Product Reliability
Fewer assembly steps mean fewer failure points.

Better Structural Performance
Ideal for components requiring strength and durability.

Applications of Insert Molding
Insert molding is widely used in engineering and industrial applications.

Automotive
Electrical connectors

Sensor components

Threaded parts

Medical Devices
Precision instrument components

Embedded connectors

Electronics
Connectors

Cable assemblies

Industrial Products
Fasteners

Structural plastic parts

Materials Used in Insert Molding
Common materials include:

ABS

PC

Nylon (PA)

POM

Insert materials include:

Brass

Stainless steel

Aluminum

Insert Molding vs Overmolding
Insert molding is often confused with overmolding, but they serve different purposes.

Overmolding is used to combine multiple plastic materials, often for improved grip, sealing, or appearance.

For a full explanation, visit:

Overmolding Process
Our Insert Molding Capabilities
We provide complete insert molding solutions:

Insert mold design

Precision mold manufacturing

Automated insert placement

High-volume production

Our team ensures stable production and consistent quality.