Band Heater

Band Heater are circular or ring-shaped electric heating elements used to heat objects or equipment. They are widely used in Industrial fields such as Injection molding machines, plastic processing, mold heating, and pipeline heating. Heating coils generate heat by passing current through a resistive material (such as nickel-chromium alloy wire), providing precise temperature control and stable heating effects. They are often used for equipment parts that require uniform heating to ensure temperature stability during production.

Basic Atructure of Band Heater

1. Heating Element: Made of resistance material (such as nickel-chromium alloy wire, iron-chromium alloy wire), it is responsible for generating heat. When the current passes through the resistance wire, it is converted into heat energy due to the resistance.
2. Shell material: The outer shell of the band heater usually has a metal shell. Common materials include stainless steel, aluminum alloy, etc. to enhance durability and heat dissipation.
3. Insulation layer: There will be an insulation layer between the electric Heating Wire and the outer metal shell to prevent current leakage and ensure Safety.
4. Connection port: There is usually a cable connection port for connecting the power supply to ensure that the band heater can work properly.

Application of Band Heater in Injection Molding Machine

In injection molding machines, band heater are usually used in the following parts:

1. Barrel Heating：

• The barrel of the injection molding machine is heated by a band heater to ensure that the plastic particles can be evenly melted to a suitable fluidity. This is the most common application of the band heater.
• Heating method: Generally, a round band heater is used, which is tightly wrapped around the outside of the barrel to ensure uniform heating.

1. Injection Head Heating ：

• The injection head is the part of the injection molding machine that injects the molten plastic into the mold, and the band heater helps the injection head maintain the appropriate temperature.
• Heating method: Use electric heating tape or flat band heater to adapt to the shape of the injection head and temperature control requirements.

1. Mold Heating:：

• Mold heating is a key step in ensuring that plastic can Flow smoothly into the mold and form during the injection molding process. Band heater are used on the mold surface or in the hot runner system to maintain a stable temperature.
• Heating method: You can use hot runner band heater or mold-specific band heater to ensure uniform mold temperature.

1. Hot Runner System Heating: ：

• The hot runner system maintains the fluidity of molten plastic and prevents crystallization during cooling by heating the runner.
• Heating method: Specially designed band heater are often used in Hot Runner Systems to ensure precise temperature control.

The band heater plays a vital role in the injection molding machine, ensuring that the plastic material flows and forms at the appropriate temperature. Choosing the right band heater can not only improve production efficiency, but also ensure product quality. When choosing a band heater, it is necessary to comprehensively consider many factors such as heating requirements, temperature requirements, durability, and budget.