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Case Study / Hot Runners Photos courtesy of APM. Precise control over hot runner temperatures was the key to ending a problem with burned parts that plagued a particular job being run by custom molder American Plastic Molding Corporation (APM; Scottsburg, IN)���enabling the company to increase output of saleable product by 10 to 15 percent. Mold manufacturers that install a quality temperature control on a hot runner system not only lengthen a mold���s life, but they help improve part quality���making both management and customers happy. Family-owned and -operated since it was founded in 1971, APM is a full-service custom molder that provides extensive engineering services and stages free quarterly seminars on design and engineering for customers and prospects. The company has 38 injection molding machines, an assembly facility with lean manufacturing cells, an on-site mold shop and a 60,000-square foot warehouse. It provides full engineering services and offers customers supply chain sourcing and management, warehousing and distribution. Employing 120 people, APM serves customers in a wide range of end use industries. Parts in the 16-cavity mold at American Plastics Molding Corp. Fast Heat Inc. (Elmhurst, IL) General Manager Sean Rainsford notes that the Ion Series temperature controllers can extend a mold���s life. ���The bake-out feature can remove moisture from the mold at every startup,��� he explains. ���This reduces downtime by protecting the heaters and mold.��� Additionally, the The Ion Series Controller helps evensoak and waterextend mold life. fall features allow the customer to bring the mold up to temperature efficiently while using 100 amp service. Rainsford adds, ���When other controllers have all zones pulling maximum power, there is the risk of opening the circuit breaker and damaging heaters. The downtime is expensive.��� In production, the precise temperature control will reduce scrap such as flashing, stringing and burning. These benefits will also yield lower maintenance costs. Also, when the mold needs preventive maintenance in the toolroom, the controller diagnostics guarantee the mold is fully operational and ready for production. Rainsford adds, ���Another unique feature is that the PID controller software is constantly tuning to the mold when in use.��� According to Alan Myers, APM plant manager, the part discoloration caused by burning stopped almost immediately after connecting an Ion Series temperature controller to a 16-cavity hot runner system that was producing 30 percent glass-filled nylon 6.6 parts for a Tier 1 supplier to the automotive industry. Within two hours after installing the controller, APM had fine-tuned the system to the point where temperatures were reduced by nearly 70��F. ���Before we installed the Fast Heat controller, we were unable to reduce the temperature without having gates freeze,��� Myers notes, ���but within the first couple of hours, it moldmakingtechnology.com 17 Photo courtesy of Fast Heat. Temperature Control Boosts Hot Runner Productivity, Eliminates Burned Parts