Rectangular bands are used when there is a rectangular die or shape in which a belt heater does not fit. Configuration 403, 415 or 417 and each configuration has several different options that can be added or changed according to your needs. In the barrel and in the hot corridor and the shear effect of the snail. Dryers offer a very high efficiency (up to 98%) when heating, as they are well insulated and heat the resin directly. The shear effect and the heating tapes of the cylinder, on the other hand, heat the resin less efficiently (about 60%). For the processor, this means that the higher the running inlet temperature, the less power the process requires.
The use of mica is inexpensive, allows to reduce the weight of the heater to a minimum, and accelerates the transfer of heat through the heating envelope and to and from the object that needs heat. Mica belt heaters work efficiently when jacket temperatures are kept below 250°C. If this temperature is maintained, the service life of belt heaters is extended.
These are available in various constructions that use induction heating, steam or silicone heating mats in a body with sufficient mechanical strength to support the weight of a full drum. Typical liquids for filling applications are tar, varnish, resin, fat, chocolate or galantine. Barrel heaters are available for barrels between 20 and 220 liters.
After the wires are fastened, the outer sleeves are attached and the belt heater is wound and shaped to the desired diameter. Mica belt heaters are very often used in the plastics industry for injection extrusion and blow molding. The heater sits on cylindrical metal pipes or a barrel to heat the contents of a solid onto molten liquid. Belt heaters are thin and therefore ideal for effective heat transfer.
The wattage density, which is referred to as Watt/in2 of the heating surface, is an important consideration in the design of heating systems. Wattage does not describe the overall power of the system, but the extent to which the power is concentrated on the surface of the heater. For example, a 1000 watt system with a heater Mica Band Heater Manufacturer with a surface area of 100 in2 has a wattage of 10 watts / in2. A 1000 watt system with a heater with a surface of 50 inches2 has a wattage of 20 watts / 2 inches. Both systems have the same power, but their wattage densities are very different. This is particularly important with regard to material compatibility.