セイワ電熱 List of Products and Services

A heater with a wide range of applications using industrial heating elements.

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Manufactured with consideration for flexibility, from the thinning of the materials used to the winding of the heating element.

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A band heater with flexibility to further enhance contact with the heated tube.

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Heater for heating the nozzle part of the injection molding.

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A band heater equipped with a thermal insulation layer made of rock wool or ceramic fiber on the outside, preventing unnecessary dissipation of thermal energy to the outside.

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We have developed and added a high-temperature fully sealed heater that can withstand a constant 500°C to our currently bestselling fully sealed nozzle heater.

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Introducing a microbead heater that is highly flexible and can be freely wrapped around the object being heated.

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This is a heater designed and manufactured to completely prevent accidents such as disconnection or insulation failure.

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This high-temperature ceramic band heater has been developed using ceramics that can withstand ultra-high temperatures in response to the demand for higher molding temperatures.

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【Overview】 This heater, which has a wide range of applications as an industrial heating element, is used for air heating in heating devices and dryers, as well as for contact heating in molds and heat plates. In the case of contact heating, it is necessary to consider the close contact with the heated object at the contact surface. Therefore, when using heaters with high watt density or when heating the object to high temperatures, it is essential to use a pressure plate. There are standard types available, including both terminal types and single terminal types. ★For more details, please request the materials★

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【Overview】 ● The emergence of new ultra-heat-resistant engineering plastics has led to the demand for higher molding temperatures. This high-temperature ceramic band heater has been developed using ceramics that can withstand ultra-high temperatures to meet such needs. ● Conventional ceramic heaters could not be used at temperatures above approximately 450°C due to a rapid decrease in insulation resistance. ● This high-temperature ceramic band heater is designed and manufactured to withstand the commonly required temperature of 700°C. - The heater width is a multiple of 15mm plus 2mm. - The standard heater thickness is 15mm. Additionally, an energy-saving type can be manufactured with a thickness of 21mm. - The current value per heater circuit ranges from 2.5 to 7A. - The minimum inner diameter of the heater is 60mm. - The minimum width of the heater is 32mm. ★ For more details, please request the materials ★

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【Overview】 Band heaters are commonly used, but our company establishes design standards for optimal material thickness, considering factors such as inner diameter and width, as well as adhesion and robustness. Additionally, we achieve true roundness with our excellent specially designed rolls, which creates accurate contact surfaces, resulting in band heaters that have a long lifespan and are well-received. We offer standard one-piece and two-piece types, and for larger diameters, we also manufacture three-piece or more models. ★For more details, please request our materials★

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【Overview】 ● It is difficult to completely prevent resin leakage from the nozzle tip during the injection molding process in plastic injection molding machines. ● For this reason, the so-called nozzle heater, which heats the nozzle section, has often experienced accidents such as disconnection or insulation failure due to leaked resin entering the heater and carbonizing, causing electrical short circuits. ● This heater is designed and manufactured to completely prevent such accidents. ● It is fully sealed, so there is no risk of leaked resin or similar substances entering the heater. ★ For more details, please request the materials ★

• Other heaters