LSR 2-Shot Injection Molding

SIMTEC Silicone Parts is a leading supplier of multi-shot injection molded parts for the automotive, healthcare, and consumer goods industries, among others. 2-Shot molding is a versatile process that can be used to create parts in a wide range of sizes and technical configurations.

Our advanced production capabilities allow us to meet complex design requirements and exceptionally high quality control standards. We also offer a full selection of value-added services, including prototyping, secondary processes, packaging, and more.

What Is Multi Component Injection Molding?

LSR 2-Shot or multi-component injection molding is sometimes referred to as overmolding, in-mold, assembly injection molding, or twin shot. In general, this process consists of overmolding LSR directly onto a thermoplastic substrate immediately after the thermoplastic substrate has been molded, in the same mold and the same injection molding machine. This process allows for the integration of several functions, parts and materials into one component, fused permanently.

Two-part silicone rubber molding also allows for the best features of both materials to be taken advantage of, while simultaneously reducing or eliminating the need for post-molding assembly operations. Additionally, initial investments are reduced, as only one tool is required to produce the component. Qualification and inspection costs for the tool and product are also reduced.

LSR 2-Shot Injection Molding

Our Production Capabilities

SIMTEC prides itself in being at the forefront of LSR 2-Shot (LSR/thermoplastic) technology, and makes every effort to remain a leader in LSR and LSR 2-Shot injection molding technology. We are continually investing in this technology and our fleet of injection molding machines includes one of the first, as well as one of the largest, LSR/thermoplastic injection molding machines (with a clamping force of 350 tons) outside of Europe. We are ready to apply our unique area of specialization to your application(s), customizing each step of the process to create a superior end-product that makes the most of the inherent benefits of both LSR and our LSR 2-Shot injection molding processes.

Value-Added Services

SIMTEC does more than just produce quality 2-Shot injection molded parts. We can also assist with all aspects of the design and the customization of the production process, providing consulting services that leverage our years of experience in the silicone parts industry.

Whether you need assistance choosing the right raw material for your component or are looking for the most economical way to ship your finished product to overseas markets, we can help. You’ll also benefit from our exceptional quality control processes, which allow us to deliver one of the lowest defect rates in the industry.

Why LSR 2-Shot injection Molding?

LSR 2-Shot technology allows for part weight optimization, complex designs, the integration of multiple materials and (where needed) multiple functions into one component. LSR 2-Shot injection molding is well suited for parts with tight tolerances and complicated geometries, as well as parts with wall thickness consistency requirements. With this process, we are able to provide solutions that ensure the repeatable production of high precision, high quality parts for large volume applications.

Specific Industry Applications

Multi-component injection molding is perfect for any application requiring two part silicone rubber components. SIMTEC has a long history of partnering with Fortune 100 and Fortune 500 businesses to produce parts for the following industries:

  • Automotive — The 2-Shot injection molding process greatly reduces or eliminates the need for additional assembly, making it an excellent choice for economically creating LSR/plastic or LSR/metal automotive components. For example, multi-component injection molding is often used to create wiring harness components, where the product housing, grommet and ring seal are manufactured in the same mold.
  • Health/medical — 2-Shot LSR molding can be used to create complex, multi-component parts for the healthcare industry. Because LSR is hypoallergenic, bacteria-resistant, and extremely biocompatible, it is suitable for use in specialized surgical or medical applications.
  • Consumer goods — Any consumer product requiring airtight/watertight seals and gaskets can be a candidate for LSR 2-Shot molding. LSR’s insulative and environmental sealing properties make it an ideal choice for housings, dampers, and many other components.

More information about the different forms of LSR 2-Shot injection molding can be found in our blog entry titled LSR 2-Shot Experience and Expertise. To discuss the specific needs of your project with our team, and to obtain a free quote, contact a SIMTEC representative by phone or email.