What is 2 shot injection molding?

- May 23, 2018-

What is 2 shot injection molding ?


   Two-color injection molding refers to the injection of two different materials into the same set of molds, so as to realize a molding process in which the injection-molded parts are formed of two kinds of materials. Some of the two materials are of different colors, some are different from soft and hard, so as to improve the appearance and assembly of the product.


Material:  ABS, PA6, PA66, PBT, PC Product Type

Two-color products Advantages: Different materials improve aesthetics and assembly performance


 Compared with traditional injection molding, the two-shot co-ejection molding process has the following advantages:

1.  core material can use low viscosity materials to reduce the injection pressure.

2 . From the consideration of environmental protection, the core material can use recycled secondary materials.

3 . According to different characteristics of the use, such as the use of soft materials for thick finished leather materials, hard materials for core materials or core materials, foam plastics can be used to reduce the weight.

4.  can use lower quality core materials to reduce costs.

5 . Cortical material or core material can use expensive and special surface properties, such as anti-electromagnetic interference, high electrical conductivity and other materials to increase product performance.

6. The appropriate skin material and core material can reduce the residual stress of the molded product, increase the mechanical strength or the product surface properties.

7 produces products such as marbled roads.


Development and Application:

   From the characteristics and applications of multi-color injection molding and two-shot co-injection molding, it can be seen that there is a trend of gradually replacing the traditional injection molding process in the future. Innovative injection molding technology not only improves the precision of the injection molding process, provides difficult process technology, but also opens up the scope of the injection molding process. Innovative injection equipment and processes are sufficient to meet the increasingly diversified, high-quality, high value-added products.

   Two-color injection molding has now been widely used in almost all plastic fields such as electronic products, power tools, medical products, home appliances, toys, etc. The production and molding of two-color molds and the development of two-color multicolor injection molding machines and two-color injection molding materials have also developed rapidly. .

2 shots over mold.jpg

   Asia Billion is a high quality plastic injection mold manufactures , if you have any over molding or 2 shots over molding project , please contact us freely at : sales@ab-industry.com 

Previous:working principle of the over molding and product design key points Next:China engineering plastic molding companies ---- Thermoset BMC Plastic Features