As outlined by Ambrell, a cap to container seal is made using a laminated disc made from a wax layer, aluminum layer plus a polyethylene (PE) layer. The aluminum layer behaves as a susceptor, induction heating system to about 125 to 150 degrees C within the electromagnetic field manufactured by the induction coil. It then warms up the wax and PE layer sufficiently to produce a hermetic seal involving the cap and container. Heating time is less than a second with this high-speed, low energy consuming automated process.
Sealing caps on food containers and medicines are just about taken for granted, but imagine the safety and health dangers, and also the nasty molds, consumers could be subjected to if these caps weren’t properly sealed. By far the most extended induction application in this particular sector is the top-speed hermetic sealing in tamperproof packages, cap sealing and aseptic packaging. This method guarantees the integrity of your seal, as well as the preservation of the product for longer intervals.
One of the leading advantages of induction heating is its energy efficiency. “Reduced energy usage inside the manufacturing process is really a win-win for developing a competitive advantage,” says Mark Davis, Inside Sales Manager of Eldec Induction LLC. “Becoming enviromentally friendly in manufacturing is over a philosophy, a technique, or even a responsibility. It really makes good ‘cents’ to lessen and conserve. Induction hardening or heating releases less internal residual stresses because of the smallest possible energy input – measured in kilowatt seconds – and, therefore, only a small fraction when compared to the total mass that has to be quenched during the final heat treatment. The cheapest possible energy input and resulting reduced energy consumption translates right into improved environmental benefits.”
Induction heating is an eco friendly replacement for induction brass melting furnace, such as blowtorches, oil baths, ovens and hot plates. These expensive methods produce smoke, fumes and oil waste, and they are hazardous to personal safety and working environments.
But you can find dangers linked to the induction means of heating. Fortunately, the 2014 edition from the National Fire Protection Association’s NFPA 70: National Electric Code addresses these concerns with specific guidelines for warning labels, signs and equipment marking.
Warning labels or signs that read, “Danger – High Voltage – Keep Out” will be coupled to the equipment and stay plainly visible where persons might come in touch with energized parts when doors are opened or closed, or when panels are taken off compartments containing 150 volts, AC or DC.
In addition, a nameplate must be affixed for the heating equipment, providing the manufacturer’s name, model identification and the following input data: line volts, frequency, quantity of phases, maximum current, full load kilovolt-amperes (kVAs) and full load power factor. Additional data is permitted.
Incorporating best safety practices involving induction heating can be achieved with advice from suppliers who uses induction heating methods for new product development, process dexjpky33 and troubleshooting. Consultants work primarily with operators and line forepersons who are responsible for day-to day-equipment operations. Best practices include using lockout devices when servicing equipment.
Signs and labels should be found in facilities to warn workers in regards to the dangers of working together with induction heating on power supplies and coils that utilize high voltage. Another recommendation is the use of personal protective equipment (PPE) linked to utilizing induction brazing copper. All equipment should utilize light guards or similar protective devices to prevent both experience of the coil and moving mechanical assemblies that might harm the operator during automatic operations.