A Simple Guide to PU Conveyor Belts

Thermoplastic Polyurethane (TPU) is a suitable material for food sector conveyor belts.  TPU can be highly beneficial in high-performance applications since it has qualities that many other comparable polymers lack. PU conveyor belts are grouped into many types based on their nature, but they all have strong resistance to wear and abrasion, as well as to vegetable, animal, and mineral oils and fats.

These basic qualities make PU conveyor belts perfect for use in the food sector, particularly in extremely demanding applications such as confectionery, which require temperature adaptability, exceptional abrasion, and easy-to-clean surfaces.

There are also many TPU choices available based on requirements, such as belts with superior hydrolysis resistance and lower temperature flexibility, as well as belts with higher thermal oxidation resistance. These belts have flat surfaces, which reduces bacterial deposits and makes belt cleaning easier. Although the material is very pricey for PU conveyor belts, it is ideal for a variety of contemporary food processing applications that need direct food-to-belt contact.

Advantages of PU Conveyor Belts

No smell

The smell of PVC belts is strong. Because the PU conveyor belt's rubber surface is constructed of PU (polyurethane), it has no odor. When in touch with food, it emits no unusual odor.

Direct interaction with food

PVC conveyor belts contain toxic elements to the human body, hence, they should not come into direct contact with food. The translucent PU conveyor belt is clear and clean, meets FDA food-grade standards, may come into direct contact with food, and is resistant to oil, washing, and cutting.

Environment-friendly

PU conveyor belts, often known as green materials, are more eco-friendly than PVC conveyor belts due to their ability to disintegrate naturally.

More durable

In terms of durability, PU conveyor belts are more cut-resistant than PVC conveyor belts. Furthermore, the PU conveyor belt may be utilized for repetitive cutting work on the cutting machine at a specific thickness.

PU conveyor belt rebounds quickly

The elastic PVC conveyor belt rebounds slowly after folding, but the PU conveyor belt rebounds swiftly.

Why You Should Prefer PU Conveyor Belts Over PVC Belts

PU conveyor belts are also known as polyurethane belts, whereas PVC conveyor belts are polyvinyl chloride belts, however they differ in composition. According to purchasing statistics, PU and PVC conveyor belts have long been the most popular items among clients. New and existing clients frequently ask the same question: Which is better for PVC or PU conveyor belts? In truth, there are no good or bad belts; only industries and equipment that are not appropriate for you. 

The causes are as follows

• The PU conveyor belt is constructed of polyurethane (polyurethane), which is clear, clean, non-toxic, tasteless, and may come into direct contact with food.

• PU conveyor belts are oil, water, and cutting resistant, with a thin belt body, excellent toughness, and enhanced tensile strength.

• Polyurethane (PU) is a soluble substance also known as a green raw material. Polyvinyl chloride (PVC) includes hazardous chemicals for humans. As a result, when it comes to food safety, the ideal option is a PU conveyor belt.

• In terms of endurance, the PU conveyor belt may be cut to a certain thickness and used as a cutter. It can also be cut repeatedly.

• Food packing and transportation, as well as non-food transportation, are the primary applications for PVC conveyor belts. It costs less than a polyurethane conveyor belt and has a shorter service life.

How to Choose the Right PU Conveyor Belt

Consider the following factors when selecting one:

Type of product being conveyed: Wet, dry, oily, or sticky products may need special belt coatings.

Temperature and environment: Make sure the belt can handle the temperature, humidity, and exposure to chemicals.

Speed and load capacity: Match the belt thickness and structure with your production speed and material weight.

Surface finish: Smooth, embossed, or patterned surfaces help with product grip and movement.

Belt tracking: Look for anti-static or low-noise options if working in sensitive environments.

What Makes PU Conveyor Belts Ideal for the Food Industry? 

PU belts are suited for usage in the food sector with high-demand applications, such as the confectionery business, which demands temperature flexibility, good abrasion resistance, and easy-to-clean surfaces. These important features make PU Conveyor belts perfect for use in the food sector.

The smooth surfaces of PU belts make cleaning easy while also preventing bacterial buildup. Despite being a more expensive material, TPU conveyor belts are a good solution for a wide range of modern food processing applications. These applications have unique requirements for direct food-to-belt contact.

Conclusion

PU conveyor belts have become an essential part of various industries where hygiene, durability, and efficiency matter. From food processing to pharmaceuticals and packaging, their smooth surface, abrasion resistance, and easy maintenance make them a top choice over traditional belt materials. With proper selection and maintenance, PU belts can provide years of reliable performance and contribute to the overall efficiency of your production system.

Frequently Asked Questions 

What is the lifespan of a PU conveyor belt?

With proper care and maintenance, PU conveyor belts can last several years, depending on the application and frequency of use.

Can PU belts be used for food contact applications?

Yes, PU belts are food-grade and comply with international hygienic standards, making them safe for direct food contact.

How do I clean a PU conveyor belt?

Use a soft cloth with mild detergent or food-safe cleaning solutions. Avoid harsh chemicals or abrasive brushes to prevent surface damage.

Are PU belts resistant to oil and grease?

Yes, PU belts have good resistance to oils, fats, and mild chemicals, which makes them suitable for food and packaging environments.

What thickness options are available for PU belts?

PU belts come in different thicknesses ranging from 0.5 mm to 5 mm or more, depending on the manufacturer and the application.