Products Description
Plastic Injection Overmolding is a common process to make the parts like toothbrush handles, power tool grips, dashboard buttons, catheter connectors, surgical handles and so on. Over molded with rubber/soft materials in the hard plastic, it can be anti-slip, skin-friendly and shock-resistant. It is a popular production process and at XC Precision, we also provide plastic injection overmolding services. For prototype testing, we do with silicone overmolding. Production QTY, we do with plastic injection overmolding.
--------------------------------About XC Precision-----------------------------
XC Precision is also XinChuan Sheet Metal. It was established in 2010 and located in Dongguan City, which is known as the World Factory. Now XC precision is a comprehensive processing and manufacturing manufacturer focusing on precision custom components. The main services are Precision Sheet Metal Fabrication, CNC Milling, CNC Turning, Rapid Prototyping and Rapid Injection Molding…From Prototypes to volume production.
It has engineering team with engineers more than 15 years' experience. With English speaking project support engineers to follow up your projects directly. With the own factory about 10000 square meters and various equipment for different production capabilities. Including machining and surface treatment, like spray painting or powder coating…It can provide one stop services to save cost and shorten the lead time.
What is Plastic Injection Over Molding Process?
Plastic Injection Over Moling is a multi-material composite injection molding process in which a rigid substrate is first formed, followed by the injection molding of a soft material or elastomer (such as TPU, TPE, or silicone) to encapsulate the substrate's surface, thereby creating a unified, integrated part that combines both soft and rigid elements-without the need for adhesives or assembly.
Some Tips for Material Selection for your Plastic Injection Over Molding Products
When you need the plastic injection over molding products. Then the most critical things we should consider was that the two materials must be chemically compatible to achieve a strong, permanent bond. Here is a standard industry guide for the most common material pairings:
|
Hard Plastic Material (Base Materials) |
Compatible Over mold Materials (Soft Materials) |
Notes |
|
Polypropylene (PP) |
TPEs TPVs |
Both these materials can bond well with polyolefins |
|
ABS, PC, PC/ABS |
Modified TPEs TPU |
Standard TPEs don't bond to these; So it needs a specially formulated grade |
|
Nylon (PA6, PA66) |
Modified TPEs TPU |
Nylon is hygroscopic (absorbs moisture) and more difficult to bond, requiring specific over mold grades |
|
Metals (Aluminum, Brass, Stainess Steel) |
TPE TPU LSR (Liquid Silicone Rubber) |
Preparation on the surfaces is essential for any adhesion (Like Cleaning/Priming) |
Ready to start your overmolding project? Upload your 3D drawing (STEP/IGS) for a free DFM review
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