Assembly And Production

What is Insert Molding

Insert molding is an injection molding process in which the mold is filled with pre-prepared inserts before the molding process takes place, then molten material is joined with the inserts and they together make an integrated product. The insert is usually a simple part, ranging from a plastic handle to an electronic component.

Insert molding is widely used because there are so many applications and It eliminates the need for running any secondary operations such as soldering, welding, Connecting or bonding,which can bring down significant costs.

High-Efficiency Automated Assembly Solutions

Doublestars operates a 5,100 m² dedicated assembly workshop supported by 190+ skilled operators, delivering scalable and precision-controlled assembly services for industrial plastic components.

Our Production Capabilities

  • 12 automated assembly lines
  • 4 printing lines(silk screen & pad printing)
  • 3 hot stamping / heat welding systems
  • 8 ultrasonic welding machines
  • 2 vibration welding machines
  • 2 laser engraving / cutting systems

Advanced Automation Integration

We integrate robotics and automated vision inspection systems to ensure:
High operational precision
Stable and repeatable production qualityReduced labor intensity and error rate
Lower production cost through automationImproved product consistency and market competitiveness
From component assembly to complete product finishing, Doublestars delivers reliable, high-volume and quality-controlled production solutions for global customers.

Insert Molding vs.Overmolding

1, Insert molding is a one step process, while overmolding is a two-step process where one plastic component is molded over another already molded part to enhance the parts performance.

2. insert molding is often bounded by metals, like brass, steel, or stainless steel. it means to adds metal parts to injection molded parts. while overmolding is 2 times injection molding,it’s combined by 2 types of plastics.

Overmolding
Insert Molding

Molds Making Projects

Shanghai Elue is an expert to provide plastic mold injection service. Over the years,we have run various plastic molds for different industries.

CNC Machining

The majority have suffered alteration in some form, by injected humor, words which don’t look even slightly.

Plastic Molding

The majority have suffered alteration in some form, by injected humor, words which don’t look even slightly.

Aluminum Extrusion

The majority have suffered alteration in some form, by injected humor, words which don’t look even slightly.

CNC Machining

The majority have suffered alteration in some form, by injected humor, words which don’t look even slightly.

Plastic Molding

The majority have suffered alteration in some form, by injected humor, words which don’t look even slightly.

Aluminum Extrusion

The majority have suffered alteration in some form, by injected humor, words which don’t look even slightly.

Insert Molding FAQs

◆ How long does it take to make an injection mold tool?

Generally speaking, 25-30days. It depends on how complicated your molds will be.

 How can I reduce mold costs?

To some extent, a good mold design is the first step to the project success.Our tooling designer with over 20years experience will give the most appropriate mold design solution and then discuss with customers.

◆ What inudstries use injection molding?

Injection molding widely used in many industries, like medical, water treatment, household products, consumer electronics, electrical tools and auto parts. The material includes PP, PE, POM, PS, PA66, PTFE, PSU, ABS, PA + Fiber Glass,etc.

◆ What is the mold life?

It depends on what mold steel you will choose from, generally speaking, for a mold made from P20, mold life 100,000shots is not a problem.

◆ Q1.Can I change the design a little bit after receiving samples?
it depends on how big is the change, for small ones we can fix easily by welding or removing materials. But if it’s about mold structure, it’ll be hard and we can discuss the details later.


◆ Q2:Can you create molds based on our samples?

Yes, our engineering can make measurements from your samples to make drawings and then confirm with you before moving forward.

◆ Q3: Is it possible to know how are my products going on without visiting your company?

Yes sure, it’s a must we have to update you each progress without your visiting.We will offer a detailed production schedule and send weekly reports with digital pictures and videos which show the machining progress.

Get In Touch With Us

Looking for precision injection molds or plastic parts manufacturing? Send your inquiry to get a fast, professional quote from Doublestars.
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