Overmolding is a very difficult process, requiring adherence to the very tightest of tolerances. The general concept is quite similar to insert molding,

but has more opportunity for mistake and a much smaller margin of error. We utilize the finest high-tech injection molding equipment for our services

for the highest possible quality and superb repeatability.

Because the materials we use shrink as they cool following the molding process, special consideration must be made in the creation of our molds.

And, as WEILIN uses a number of different materials in overmolding, all of which have different cooling/shrinking properties, it is crucial that we

create our molds to match the specific properties of the material(s) being used. Our mold designers will perfectly match their mold specs to the

unique needs of your overmold project.

Overmolding for Injection Mold Design

1. Substrate coring for uniform wall thickness of 2nd shot.

2. Shutoff areas between substrate and 2nd shot.

3. Evaluation of material bonding vs. mechanical bonding of dissimilar materials.

4. Obtaining flow between isolated or separate areas of 2nd shot.

5. Ability to support substrate during 2nd shot.

Weilin Mould is an excellent plastic injection mold and plastic product manufacturer in south China. We provide high precision complex plastic

molds, prototype, and soft moulds, also equipped with high quality injection machines, such as SUMITOMO, TAICHUNG, JSW, TOYO. Our products

cover the fields of electrical appliances, automobile, Medical equipment, OA, science & technology, household items, instrumentation, etc.

We are a team of premier manufacturing sites, which is capable to handle the whole project, including design, tooling, manufacturing, printing,

assembly, package, shipping arrangement. It is not only for metal fabrication, but also for injection molding, even the combination. For more

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