TPI

EXPERIENCE DESIGN FREEDOM WITH 360-DEGREE TWO-SHOT INJECTION MOLDING

Our two-shot injection molding process molds a second shot of plastic up to 360 degrees around the first and can incorporate inserts directly in-mold. This reduces production steps and overall costs while offering unmatched design flexibility compared to other molding methods for parts with multiple materials, colors, and functionality.

OPTIMIZING THE TWO-SHOT INJECTION MOLDING PROCESS

With decades of experience in two-shot injection molding, we’ve optimized our processes to drive cost out and maximize value for our customers. Our rapid prototyping, advanced molding techniques, and material expertise streamlines the production process from conception to production.

RAPID PROTOTYPING

Make informed decisions before full-scale production with our rapid prototyping capabilities. We evaluate the design and identify potential issues quickly and cost-effectively to speed up the product development process.

PRESS-TO-PRESS TRANSFER

Our specialized press-to-press transfer technique allows us to mold 360-degrees. It’s ideal when your application requires molding over metal inserts such as fasteners and magnets or other substrates such as structural reinforcements.

COLOR MATCHING

We’ve worked with hundreds of materials and additives, so we can accurately predict how processing will affect appearance. This expertise allows for precise color-matching and replication of design intent, enhancing visual appeal and brand identity.

APPLICATIONS

Our two-shot injection molded parts contribute to the success of major industrial sectors, including automotive, lawn & garden, heavy equipment, and consumer products. Explore the wide range of uses for our two-shot injection molding solutions.

MANUFACTURING CAPABILITIES

Our expertise lies in two-shot overmolding and insert molding. In addition, we utilize in-house secondary processes and high levels of automation to lower labor costs and improve accuracy and lead times. Our team can determine the optimal processes for your part.

DESIGN & ENGINEERING

From concept to production, our tailored design and engineering capabilities deliver cost-effective solutions for two-shot injection molded parts. We have the experience and confidence to take full design responsibility or serve as a design partner.

MATERIALS

There are hundreds of materials suitable for two-shot injection molding and thousands of ways to adjust, blend, and fine-tune them. Our material experts can help you choose compatible materials that will form a molecular bond while simultaneously meeting the requirements of your part.

TWO-SHOT INJECTION MOLDING FAQS

Questions About Two-Shot Injection Molding
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What materials are best for two-shot injection molding?

The two-shot injection molding process combines two different plastic resins in one machining cycle. To realize the full benefits of this process, you should choose two compatible materials that can form a molecular bond while simultaneously meeting the functional requirements of your part. Learn about the most common two-shot injection molding materials in our Two-Shot Design Guide, or contact us if you need help choosing compatible materials.

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What design considerations should be made for the two-shot injection molding process?

Two-shot injection molding is the ideal process for complex parts. As such, part design often requires a high level of refinement and sophistication. That’s why we’ve developed a Two Shot Design Guide. It provides the foundation you’ll need to start designing for the two-shot molding process.

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How much does two-shot injection molding cost?

Two-shot injection molding eliminates the need for secondary processes such as welding and assembly. As such, piece prices tend to be lower for two-shot molded parts compared to multi-component single-shot assemblies. The tooling for two-shot, on the other hand, tends to be more complex and costly than single-shot. Therefore, two-shot injection molding is most cost-efficient for high-volume productions. Request a quote today to see if two-shot molding is the right solution for you.

Questions About Us
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How do I contact you? Where are you located?

Our two-shot injection molding company is located in Bad Axe, Michigan. You can drop us a note online, give us a call at 989-269-9791 or email us at plasticsales@geminigroup.net.

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Who do you work with?

We typically work with large customers such as automotive OEMs, Tier 1s, and Tier 2s. The majority of our accounts have volumes of at least 10,000 parts annually and have an annual buy over $100,000. If this sounds like you, we should connect.

 

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What are your capabilities?

  • Two-shot injection molding
  • Multi-shot injection molding
  • Insert and overmolding
  • Secondary operations
    • Welding (infrared, hot plate, ultrasonic)
    • Riveting and staking
    • Hot stamping
    • Foam and acoustic pad assembly
    • Part identification marking
    • Parts kitting
  • In-house tooling design and build
    • Injection mold
    • Trim/fabrication tooling
    • Assembly fixtures
    • Quality gauges
  • Advanced testing laboratory
    • PPAP
    • Material property analysis
    • Mechanical testing
  • Rapid prototyping
    • Specialized engineers and designers
    • Dedicated prototyping presses
    • Advanced software and technology
    • Prototype molds made from wood, epoxy, aluminum, or steel

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What certifications do you have?

Our two-shot injection molding company is ISO 14001:2004, ISO/TS 16949:2009, and WBENC certified. View our Certifications page.

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What materials do you work with?

We work with a variety of plastic resins. For a complete list, please visit our Materials page.

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Who manufactures your tooling?

We design and manufacture most trim and fabrication tooling, as well as assembly fixtures, in-house. We’ll occasionally build prototype and production molds in-house, but we’ve found it’s usually more cost-effective to design in-house and partner with a dedicated, US-based moldmaker for the manufacturing.

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My project requires an NDA. How do I submit that?

You can attach your NDA to our RFQ form or send it directly to plasticsales@geminigroup.net.

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Do you offer molding options other than two-shot injection molding?

Two-shot injection molding is just one of our many plastic molding capabilities. We also specialize in:

  • Profile extrusion
  • Technical blow molding
  • Compression molding (including Baypreg and Azdel)

This breadth of experience enables us to evaluate multiple processes and materials and recommend the optimal combination for your unique application.

In fact, 9 out of 10 of our largest customers purchase products from two or more of our processes.

Our Customers

Wherever You’re Located, We’re Here to Help

18 strategic locations in North America to meet the needs of our diverse customer base.

Two-Shot Molding Design Guide

Two-shot design can deliver a competitive advantage far above other molding processes, especially for complex parts. Learn the benefits of the process and explore the special design requirements needed to make it work in this free guide created by engineers, for engineers.

Get to know us. Get in touch today.

We have the resources to meet any part or production challenge. Let’s talk about what that means for you.

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