Classification of High-Temperature and Low-Temperature Conveyor Belts

In industrial applications, conveyor belts can be categorized into high-temperature and low-temperature types based on the temperature ranges they can withstand. Below is a detailed introduction to these two categories:

I. High-Temperature Conveyor Belts

High-temperature conveyor belts are primarily used for transporting materials in high-temperature environments; they can withstand elevated temperatures without suffering performance degradation or damage. Common types include:

1. Heat-resistant conveyor belts: These belts are typically made from specialized materials such as PVC, PU, ​​or silicone, offering excellent high-temperature resistance. They maintain stable physical and chemical properties in high-temperature environments, ensuring smooth material transport. While standard PVC and PU belts generally operate between -10°C and +80°C, specific high-temperature versions can withstand higher temperatures.
2. Felt heat-resistant conveyor belts: Featuring a wool-covered surface, these belts offer oil resistance and breathability, making them ideal for the protective transport of glass. The base layer consists of wear-resistant material that enhances tensile strength; these belts can also be customized to specific requirements. Capable of withstanding temperatures up to approximately 480°C, they are suitable for industries such as automotive manufacturing, precision ceramics, electronics, and circuit board production, where scratch-free handling and high-temperature resistance are required.

3. Teflon heat-resistant conveyor belts: Suitable for environments ranging from -70°C to 260°C, these belts offer excellent weather and aging resistance. They retain their strength and weight even after 200 days of continuous use at 250°C; after exposure to 350°C for 120 hours, their weight decreases by only about 0.6%.

4. Silicone heat-resistant conveyor belts: These belts are suitable for various high-temperature transport applications, including conveyors handling sticky materials like sugary foods. Capable of withstanding temperatures up to 220°C, they are frequently used in facilities such as airports, post offices, and warehouses.

II. Low-Temperature Conveyor Belts

Low-temperature conveyor belts are primarily designed for transporting materials in low-temperature environments, capable of withstanding cold conditions without compromising performance. Common types of low-temperature conveyor belts include:

1. Cold-resistant conveyor belts: These belts utilize cotton, nylon, or polyester canvas as the carcass material, while the cover rubber is composed of a blend of polybutadiene rubber (known for excellent low-temperature performance) and natural rubber (known for outstanding weather resistance). They feature excellent cold resistance, high elasticity, and strong impact and abrasion resistance, allowing for long-term operation in environments as cold as -40°C. They are primarily used in applications such as mining operations in northern regions or high-altitude areas and coal transport. These belts can be further categorized based on specific cover rubber properties and the degree of cold resistance.

2. Low-temperature light-duty conveyor belts: These belts are primarily used in sectors such as food processing, meat freezing, fresh-chilled seafood handling, and the production of quick-frozen foods. Belts used in these applications must meet food-grade standards. For instance, Volta has developed a belt capable of withstanding temperatures ranging from -45°C to 55°C; suitable for the vast majority of low-temperature environments, it holds certifications from the US FDA and USDA as well as the EU, complying with food- and pharmaceutical-grade requirements.