Liquid Silicone Rubber (LSR) Overmolding

SIMTEC Silicone Parts is a leading provider of parts produced using the insert plastic molding process for major OEMs throughout the world. Our advanced production capabilities, rolleroutstanding quality control, and more than 10 years of exclusive experience with Liquid Silicone Rubber (LSR) components makes us an ideal partner for your next project.

We offer value-added service at all stages of the LSR/ plastic injection molding process, from design and prototyping to packaging and delivery. With our team working for you, your project will be turned around faster and for less. Based in Miramar, Florida, we are conveniently located close to several major shipping corridors and can easily fulfill domestic orders as well as those destined for Europe, Asia, and elsewhere overseas.

The Overmolding Process

One of the benefits of liquid silicone overmolded parts and components is that the manufacturing process allows for the use of a non-plastic substrate, such as steel. Plastic substrates can also be used in the overmolding process, but overmolding is the only way to incorporate materials aside from other thermoplastics and LSRs into the injection molding process.

Overmolding injection molding is a two-step process wherein a completed plastic or metal part is placed into the mold site of an LSR mold, and then the LSR is overmolded directly onto that part.

Benefits of Overmolding

LSR/ plastic injection molding is a cost-effective and versatile process used by manufacturers in a large number of industries and applications. From LSR overmolded handles to complex electronic assemblies, there are multiple reasons why overmolding is a good choice for your project:

  • Cost and time savings — By molding silicone directly onto a metal or plastic substrate, you’ll save the expense and time required to assemble a complex part manually. This can dramatically reduce your manufacturing costs and turnaround times, allowing you to get your product to market more economically.
  • Design flexibility — LSR/thermoplastic injection molding is excellent for meeting the complex design requirements of the automotive and medical industries. Overmolding produces parts that are waterproof, airtight, and more resistant to shock and vibrations.
  • Quality control — The LSR/plastic injection overmolding process offers high tolerances and strict quality controls, making it suitable for use in any application where precision is required. SIMTEC can produce overmolded parts to your exact specifications, including devices which require manufacturing in a Class VII or Class VIII clean room.

To learn more about the benefits of LSR overmolding/insert plastic molding, or to discuss the details of your upcoming project and determine whether or not overmolding is an option, contact SIMTEC today.

Why LSR?overmold

LSR is the raw material of choice for various overmolding injection molding applications. It offers superior durability, high fatigue and tear resistance, and excellent insulativ, and environmental sealing properties when used as a housing for delicate components. It is also hypoallergenic/biocompatible.

As a result, custom LSR overmolding/insert plastic molding is often employed in the manufacturing of medical devices, electronics and automotive parts, as well as a wide range of consumer goods.

Quality-Built for Today’s OEM Suppliers

SIMTEC has produced billions of overmolded parts for some of today’s leading Fortune 100 and Fortune 500 companies. We specialize in delivering exceptional quality control across large volume orders, and we can customize our QA procedures to meet your specific requirements. We are ISO 9001:2008,  ISO 13485:2003, and ISO/TS 16949:2002 certified, and we are able to boast one of the lowest defect rates in the industry.

In addition to quality control, every aspect of the LSR overmolding/insert plastic molding process can be customized to produce liquid silicone parts to your specifications. We can assist with economical mold development, prototyping, and more. Contact SIMTEC directly to learn more about our full list of services.