Dongguan Hongsheng Metal & Plastic Technology Co,. Ltd

This is an overmolding housing, made of a hard plastic shell overmolded with a soft plastic edge.

 

Overmolding is a manufacturing process that involves injection molding one material onto another. Since the materials being overmolded must bond together, the plastics must be compatible with each other. Material compatibility stems from chemical compatibility, which is a measure of the stability of one material when in contact with another. If two materials come into contact with each other and react chemically, they are incompatible and unsuitable for multi-material injection molding. For chemically incompatible materials, positive fastening features or mechanical bonding are often recommended,which joins the two materials together without a chemical bond.

 

Overmolding represents a complex injection molding process that molds one plastic, typically a rubber-like material called a thermoplastic elastomer (TPE), over another component called a substrate. Overmolding is a testament to manufacturing innovation that seamlessly blends disparate materials to create a unified and enhanced product.

 

The success of an overmolding project depends on the smart selection of overmolding materials.

Overmolding opens the door to the use of a wide range of different materials, each with its own unique properties and applications. This subsection takes an in-depth look at the types of materials commonly used in overmolding, focusing on their properties and functionality.

 

1,Thermoplastic Elastomers (TPE):

Elasticity and Flexibility: TPE stand out for their inherent elasticity and flexibility, which helps enhance grip and comfort.

Versatility: TPE are known for their adaptability to accommodate a wide range of complex designs, making them a versatile choice for overmolding applications.

Common Uses: TPE are widely used in overmolding, which ensures seamless integration of both materials with different substrates.

 

2,Substrate Materials:

Compatibility: Substrate materials are carefully selected based on their compatibility with the overmolding material to ensure a strong bond during the molding process.

Various Options: A wide range of materials from plastics to metals can be used as substrates, giving manufacturers the flexibility to choose the material that best suits a particular application.

Impact on Final Product: The choice of substrate significantly affects the mechanical and aesthetic properties of the final overmolded product.

 

Here is a template of Design For manufacturability Analysis (DFMA)that our engineering team will create before mold design and processing,making sure everything meets customer's expectation and applicable for mass manufacturing.

 

 

Company profile

 

HongSheng designs and makes molds for plastic injection molding with 22 sets of injection molding machines from 80T-530T to various kinds of plastic injection production.

 

√ Mold Custom

√ Injection molding

Injection Molding Workshop

EDM CNC processing Center

Tooling construction

 

Application

 

aerospace

Automotive

electronic

Medical

public device

 

EDM

CNC processing

Mold Fitting

http://www.hongshengmold.com/