Today’s consumers demand higher quality, more durable, safe, and longer-lasting goods. Liquid Silicone Rubber (LSR), coupled with the precision and high volume available with a highly automated, injection molding process can be the key to delivering a product with superior performance and value.
SIMTEC has nearly two decades of experience producing high volume custom molded LSR components used in consumer goods and related products. If you manufacture large quantities of consumer electronics, appliances, food and beverage or baby products, we can help.
Benefits of LSR
LSR has emerged as the material of choice for consumer products requiring resilient and ergonomic soft touch buttons and pads in controllers and FOBs, sound reactive membranes in Bluetooth speakers, drip-less valves in food, beverage and beauty dispensers, and superior, integrated sealing for gaskets and housings in personal hygiene products. LSR is hypoallergenic, mold and bacteria-resistant, tasteless and odorless, UV-resistant, and more. It maintains its consistency in a wide range of temperatures, returns to its shape under compression, making it suitable for products subjected to a wide range of temperatures and daily use.
With its unique characteristics, Liquid Silicone Rubber (LSR) provides benefits for a countless variety of applications. As new products arise, the exceptional properties of this material are progressively benefiting more industries and applications.
Two-shot LSR Shower Heads
Multi-material shower heads are increasingly common. With true, two-shot molding the LSR and thermoplastic parts are molded and integrated in the same molding process, in one machine for superior bonding and precision mating. The need for primers or adhesives is eliminated and allows for the creation of optimal spray characteristics. With the proper design and LSR material, nozzles with special features, such as the ability to vibrate at specific frequencies in order to prevent mineral and calcium buildup, are made possible.
LSR is a material that can undergo flex and elongation with no permanent deformation. This material has excellent flex fatigue resistance, thus it will stretch or twist under load, but when the load is released it will return to its initial position. Since the material is cross-linked, it will not suffer creep and its high resilience extends over long periods of time. LSR’s characteristics make it the perfect material for slit-valves used for dispensing condiments, shampoos, lotions and other liquids, and designed so that they open under pressure and fully close when the pressure is released for drip-free dispensing.
Whether listening to music or blocking out surrounding noise, ear tips or ear buds must be comfortable for long-term wear, able to stand up to the demands of daily use, especially for those with active lifestyles, and safe for extended skin contact. With LSR, ear tips can be designed and molded with very thin sections, undercuts, or with unique shapes to allow for a comfortable, snug fit that conforms to the ear. Because of LSR’s resistance to physical and chemical-stress and ease of cleaning, it can withstand a variety of conditions such as dirt, water, and compression.
As with medical components, high purity, hypoallergenic materials are required for skin-contact applications or for any component that may be exposed to a substance that will later be applied to the skin. Liquid Silicone Rubbers are ideal for caps, seals, valves, wipers, brushes, applicators, or other similar components.
Bottle dispensers designed with Liquid Silicone Rubber seals and valves optimize functionality, provide better flow control and prevent material from drying-out on the exit nozzle.
Baby Products and Toys
Liquid Silicone Rubbers are used in medical devices for their high purity and stable hypoallergenic nature. Similarly, high tear LSRs are ideal for silicone baby products, bottle parts and components that might be bitten, sucked, or used in the mouth. Most thermoplastic materials used to produce baby products gain their flex characteristics from hazardous plasticizers, and many times these materials contain substances that leach out of the material over time and may be very harmful. LSR is not only stable and pure, but due to its inorganic backbone, it is not highly susceptible to bacteria, poisoning or mold growth. Some examples of applications for which LSR is a good fit include bottle nipples, teething rings, toys and pacifiers.
Multi-Component Housings and Silicone Vibration Dampers
LSR 2-Shot injection molding and LSR overmolding technology allow for the production of air tight and/or water tight housings. Components that vibrate or require high temperatures such as shavers, blowers, trimmers, or electric motors can benefit greatly from multi-component LSR housings and dampers that incorporate the sealing properties of LSR and a thermoplastic or a metal without the need for additional assembly steps or challenges.
High Transparency Buttons
Liquid Silicone Rubber is naturally translucent and thus allows light to flow through its surface. LSR is the ideal material for silicone rubber buttons not only for its high transparency, but also for its durability, resilience, and its ability to outlast the life of the final component.
Quality Injection Molding Processes for Superior Products
SIMTEC’s South Florida manufacturing facility has achieved ISO 9001:2015, ISO 13485:2016/NS-EN ISO 123485:2016, as well as IATF 16949:2016 certifications. A commitment to repeatable processes is ingrained at every level of our business, which is why we have one of the lowest defect rates in the industry. We quickly turn around high volume silicone parts orders and we can meet special requirements for dust and other airborne particle control in our Class 8 (100,000) clean room.
Whether you are require high volume quantities of silicone hearing parts, 2-shot shower and faucet components, or other products designed for the consumer market, we will find the right solution to enhance you product performance and meet your needs. To discuss your component requirements for an upcoming project and explore how we can offer you extraordinary LSR solutions, contact SIMTEC today.
Learn More About Liquid Silicone Rubber and 2-Shot Injection Molding Read more >>