LSR Injection Molding: Process and Applications

LSR injection machines produce silicone parts such as medical products (infusion tubes, breathing masks), baby products (nipples, teethers), food-storage lids and diving products.

LSR shares the properties of conventional silicone rubber — heat resistance, electrical insulation and resistance to radiation and electrical discharge — and is available in general-purpose, high-strength, transparent and flame-retardant grades. The two liquid components, A and B, are loaded into the machine and mixed and molded fully automatically, simplifying the process and shortening cycle times. Hardness ranges from 10° to 70°.

Typical products

• LSR keypads and baby bottle nipples — classic high-volume LSR parts. Although LSR costs more than solid silicone, high volumes and virtually no waste keep overall costs down, and LSR nipples are more transparent.
• Printer rollers and seals that require low compression set and good elasticity
• Products in direct contact with the body, such as masks, laryngeal masks and medical products
• Cable accessories, watch straps, phone cases, baby bottles, bowls, nose pads, earplugs, diving masks, tubing and automotive parts