Injection molding is the most common process for producing plastic parts, primarily using thermoplastics. However, it can also be used for thermosets like liquid silicone rubber (LSR).
Liquid silicone injection molding (LSR) is ideal for producing large quantities of pliable, impact-resistant, and temperature-resistant parts. The process involves mixing a two-part silicone solution, one part containing a platinum catalyst that initiates curing into a solid.
Liquid silicone injection molding allows us to create a wide variety of parts, including gaskets, kitchen equipment, and overmolded components, for diverse customer needs.
Get your prototypes in as little as 15 days—ideal for quick functionality and manufacturability testing before mass production.
Experienced Engineers
With extensive experience from thousands of projects, our mold engineers can quickly determine the optimal parameters for any part type.
Advanced Facilities
We utilize premium imported and top-tier local injection molds to ensure high-precision, cost-effective, and rapid manufacturing.
Unlimited Capacity
Seamlessly access our network of partner facilities, featuring injection machines ranging from 10 to 1000 tons, ready to meet your production needs.
Affordable Durability
From rapid tooling to mass production and end-use silicone molds, we deliver cost-effective solutions with precision tolerances tailored to your needs.
Rapid Delivery
From sample runs to mass production, 3ERP delivers high-quality products and exceptional customer service in as little as 15 days—without compromising your budget.
Advantages of liquid silicone injection molding
Liquid silicone injection molding (LSR) combines the high-volume efficiency of injection molding with the superior elastomeric properties of LSR. Key benefits include:
LSR injection molding excels in overmolding, integrating rubber components with thermoplastic substrates. This process is ideal for adding shock-absorbing skins to electronics, ergonomic grips to tools and toothbrushes, and enhancing various other applications.
LSR overmolding involves molding silicone onto a solid thermoplastic substrate and can be performed in two ways:
● Double-shot molding: First, the thermoplastic is injected and cured. Then, silicone is injected into the remaining space and allowed to cure. ● Insert molding: Inserting a pre-molded thermoplastic part into the mold, followed by injecting and curing the silicone.
Since silicones do not chemically bond with thermoplastics, mechanical interlocks such as undercuts or protrusions are used to secure the two materials together.
