The use of liquid silicone rubber molding in injection molding is a fast-growing niche market with new changes almost every week. The process is rather special but so different than the injection molding of thermoplastics.
Custom injection molders all over the place are looking for markets to penetrate, and this is a chance for a molder who is willing to learn fresh technologies and invest in a white room. It is also suggestive to have put into place your lean producing process. Besides the fact that it just makes the best business sense, medical firms are very demanding of protocol, accountability, order, and cleanliness.
Liquid injection molding
Liquid silicone rubber molding is extremely similar to conventional plastic molding, with one big difference: in LIM the barrel is chilled and the mold is heated! Just actually opposites. Because the parts are injection molded they are clean and confidently flash-free. This provides several advantages such as lower cost per part, excellent control, and contamination-free parts. This makes it perfect for molded medical parts.
Molders who have a class 10,000 cleanroom for top cleanliness sensitive parts are capable of mold U.S.P Food Grade and Class VI Medical materials for medical injection molding production. While this demands a top level of investment and relaxation, the payoff can be remarkable. This is also technique some custom injection molders use to win local work.
What are some types of rubber molding parts?
Many “o” rings and gaskets used in assembly are made of silicone rubber. Other materials rubber molding parts can be made of Nitrile, Viton, Flourosilicone, Neoprene, and Ethylene Propylene. Because the molding is performed without containments in the plastic seals and gaskets of silicone are perfect for medical products.
What other industries are liquid silicone?
Besides the medical market, there are different other industries served by LIM. Automotive, aerospace, electronics producers, divers, firefighters, and many other specialized industries are added. This represents the best chance for custom injection molders who want to diversify.
LIM items are found on most military aircraft such as unique helicopters, bombers, jet flights, and in-fight refueling craft. Nearly all commercial aircraft use elastomeric molded components as well. Every year more and more uses are being developed.
LIM(TM) molding machines
Definitely, if the barrel is chilled and the mold heated, you need a specialized molding machine. There are a number of big products who have lines of LIM molding machines in various tonnages.