Sun India Enterprises

Corporate

Ceramic Band Heaters were developed to meet industrial requirements for high-temperature long-lasting heaters. They are ideally suited to comply with today’s new resins, which call for ever-increasing process temperatures.

An additional advantage of the Ceramic Band Heaters is that they transfer heat through conduction and radiation. This makes their tightness on barrels less critical; thus they are less prone to thermal expansion problems.

Theoretically, there are no restrictions on the diameter that ceramic band heaters can attain; however, because these heaters utilize ceramic tiles that are available only in specific lengths, the width of these heaters falls within a certain incremental range of sizes.

Advantages:

• Built-in insulation minimizes the unwanted changes in temperature along the barrel
• Heat transfers through radiation, conduction, and convection, so a perfect fit is not required compared to other band heaters.
• Heat transfers are not affected by irregular surfaces or a loose fit
• Because they operate at higher watt densities, they can be used in wider increments
• The number of bands used can be reduced with simplified wiring
• The heater is safer with the cooler external surface – over other band heaters
• The flexible design allows easy installation and removal

Ceramic Die Heaters are manufactured in two half’s & provided with spring loaded clamping system to provide an excellent grip of the heater mounted vertically. Heaters are provided with inside cover to protect against frequent dismantling of dies.

Energy Saving Ceramic Band Heaters are Specifically designed and engineered to meet the ever increasing demand for energy conservation and to improve operation efficiency capable of generating higher temperature essential to process today’s high temperature resins.

Energy Conservation is achieved by using 1″ thick Ceramic fiber insulating blanket on the outer surface increasing the overall outer diameter by 2″(Minimum Length Required is 4″). Reducing power consumption upto 30% because of low thermal conductivity of the ceramic fiber insulation, the external surface temperature of the insulation plus ceramic band heater is approximately 80°C while running the inside surface temperature at 300°C

FEATURES:

• Saving Energy Up to 30%
• Reduce Wattage of Heater
• More Uniform Heating
• Less Downtime increases Productivity
• Reduced Preheating time of Machine
• Heater cost is recover in shorter time
• Cool working atmosphere for operator
• Overall Outer diameter increases by 2″ (50 mm)

High Density Cartridge Heater can be considered “Component Heaters” that are used to heat up many different applications. Primarily used in moulds, dies & sealing bars, this Cartridge Heating Element fit snug inside a cavity and helps heat solids by reaching high temperatures. High Density Cartridge Heater has the versatility of being able to carry thermocouple inside to help control temperatures of the heater more accurately. Various diameters allow for the Cartridge Heating Element to be used in any cavity and can be custom designed with any cold section. Lead wires extend from the end to your controls.

High Density Cartridge Heater distinguishes itself by its high compression and therefore especially efficient heat emission. That’s why such Cartridge Heating Element is produced with a ground surface for a H7 fit.

The construction of High Density Cartridge Heater positions a nickel-chrome resistance wire precision wound around a magnesium oxide core. It is inserted into a Stainless or Incoloy tube locating the resistance wire close to the sheath. The core is centrally positioned within the tube and filled with magnesium oxide powder. Nickel pins pass through the centre of the core making contact with the resistance wire at both ends. The whole assembly is highly compacted by a swaging operation and thus ensuring excellent heat transfer to the external sheath. 

Sealed Mica Nozzle Heaters are hermetically sealed for liquid plastic during the manufacturing process. The connection between the heating element and the leads is protected by a special fitting made of 1 mm thick brass or stainless steel, without welding which allows a high mechanical strength in the most delicate area of the heater.

During manufacturing, the Sealed Mica Nozzle Heaters are submitted to extremely high pressure that ensures high insulation, excellent thermal exchange, lack of internal voids, perfectly smooth contact area for an optimum and uniform heat transfer to every part of the nozzle.

The Sealed Mica Nozzle Heaters are available in either Brass or Stainless Steel versions, depending on the application. It is recommended to use stainless steel nozzles where the molding or extrusion of PVC is involved as stainless steel will withstand the corrosive fumes far better.

The Sealed Mica Nozzle Heaters are a rugged product that resists very well to wearing and shocks. The inner profile is perfectly round, providing a perfect coupling with the nozzle. Size of the connecting cap is minimal, giving extremely limited overall dimensions. Power connection is performed by a Standard metal braided cable with Length of 1000 mm.

A thin layer of the “high” thermal conductive MI material is used to electrically insulate the element wire from the inside diameter of the heater sheath. 

Coil Type Nozzle Heaters are capable of performance under the most adverse conditions. Highly recommended for processing high-temperature resins to eliminate premature failures due to burn out/ process material leakage.

Heat transfer is based on conduction as well as on radiation principle, which not only improves the thermal efficiency but easy to assemble on nozzles as no pressure on heating surface is essential. Even unskilled operator can fit the heater with no risk of failure of the heater.

Coil Type Nozzle Heaters are specially designed to prevent the failures of heaters against the leakage and contamination of plastic material at nozzle position. This heater can meet the higher temperature requirement prior to molding at the nozzle position.

Stainless Steel Sheath Tubular Heating Elements in Round / Flat Sections are used as Heat Source. Low thermal expansion steel covers with suitable Mounting Brackets houses these Tubular Heating Elements.

The Coil Type Nozzle Heaters are typically used to Heat up the Nozzles of Injection Molding Machines.

Mica Band heaters are efficient and economical solutions to the heating requirements of many applications. Mica Band heaters can attain a maximum sheath temperature of 900°F, but with different electrical termination styles, clamping mechanisms, and ability to accommodate holes and cutouts, mica band heaters are successfully used in many applications, but are mostly sought for in the plastics industry.

The Mica Band Heaters made by Anupam utilizes different types of Top Grade Mica. The thickness of each mica layer is carefully selected in order to balance between the insulating characteristics of mica and the ease of heat transfer from the heating core to the machine barrel.

The resistance wire ribbon used in the mica band heater is not restricted to the capabilities of Nichrome wire. Different alloys are considered for different applications. The internal winding is carefully designed to ensure uniform heat distribution throughout the band heater. To maximize the surface-to-surface contact, our mica band heaters are carefully rounded and formed to optimize the grip on a machine barrel. The external metallic protective sheath of Anupam’s Mica band heaters is made of a special alloy, which expands less than the barrel when heated. This difference in thermal expansion makes the heater grip the barrel firmly once it is energized. This improves heat transfer which extends the life of the mica band heater.

The liquid cooling function of the Cast Band Heater is of primary importance in maintaining the proper temperature of the barrel in the extrusion process. Extrusion machines differ from injection molding machines in that they often require heating and cooling. Cooling is required on extruder barrels to offset heat generated by frictional shear as the screw pump pushes plastic melt through the barrel and die head.

The Cast Band type comes with Water Cooling system & without Water cooling system. The Cast Band Heaters uses aluminum, an excellent heat conductor, to deliver a very uniform heat pattern on the barrel.

All Aluminum Cast Band Heaters are customized. The Tubular Heating element is embedded in the Aluminum Cast Band Heater & machining is to be done to get the required size.

High Thermal Conductivity provides uniform temperature. The main application of these heaters is in the Extruders.

ADVANTAGES:

• Gravity moulding ensures an excellent material homogeneity and thus a perfect heat transfer
• Constant surface temperature is achieved through appropriate forming
• As this is indirect heating, the heating resistance is protected. The solid or fluid to be heated is not in contact with the resistance
• High protection against corrosion
• The end-to-end control of the design and production chain allows us to deliver a product which suits your process perfectly
• Resistance in severe industrial surroundings (impacts, vibration)