Food-grade coating for drum dryers in the food industry

Tecno Diamond FS is PR Rolls’ food-grade approved thermal coating developed for demanding applications in the food industry. The coating is especially well suited for drum dryers, where the surface must withstand heat, wear, acidity, scraping and continuous contact with food production processes.

Developed as part of the FoodSafe project, Tecno Diamond FS combines PR Rolls’ long experience in industrial coating technology with the specific requirements of food industry equipment. The result is a durable, homogeneous and food-grade coating solution for companies that want to improve drum dryer performance and extend the lifetime of existing cylinders. PR Rolls states that Tecno Diamond FS has received food-grade approval after passing EU-recommended migration tests conducted by an independent external laboratory, and that a declaration of conformity has been prepared for the coating.

Designed for food industry drum dryers
In drum drying, the condition of the drum surface is critical. The product is applied to the heated drum, dried into a thin layer and then removed from the surface, often using a scraper or doctor blade. This means that the coating must perform under continuous mechanical stress while supporting stable release, cleanability and product quality.

Tecno Diamond FS is designed for these demanding conditions. According to PR Rolls, the coating is exceptionally wear-resistant, homogeneously consistent, protects effectively against acidity and withstands intense scraping.

This makes Tecno Diamond FS a strong solution for food industry processes where surface durability, hygiene and reliable production are essential.

Key benefits of Tecno Diamond FS
Tecno Diamond FS helps food producers improve the performance and lifetime of drum dryers and similar production equipment.

The coating is designed to provide:

• Food-grade approved surface technology
• High wear resistance
• Excellent surface consistency
• Protection against acidity
• Resistance to intense scraping
• Improved release properties
• Reduced sticking and build-up
• Better cleanability
• Longer cylinder service life
• Reduced need for new cylinders
• Support for more reliable production

A sustainable alternative to replacing cylinders

When a drum dryer surface becomes worn, damaged or difficult to clean, replacing the full cylinder can be costly and time-consuming. In many cases, grinding and coating the existing cylinder is a more sensible alternative.

Tecno Diamond FS allows food producers to restore and protect existing drum dryer surfaces instead of investing in completely new cylinders. This can help reduce capital expenditure, shorten maintenance-related downtime and extend the useful life of critical production equipment.

PR Rolls has also invested in equipment specifically designed to meet the needs of the food industry, supporting its expansion into the drum dryer coating market.

Developed from proven Tecno Diamond coating technology
Tecno Diamond FS builds on PR Rolls’ experience with TecnoDiamond, a carbide coating used for demanding industrial roll applications. TecnoDiamond is applied on site at the customer’s premises and is designed to lengthen the intervals between grindings for calender and press rolls.

Tecno Diamond FS brings this coating expertise into the food industry, with a food-grade approved solution developed for applications where product safety, cleanability and mechanical durability are especially important.

On-site coating expertise for the food industry
PR Rolls is known for demanding on-site services for industrial rolls and cylinders. With Tecno Diamond FS, this expertise is now available for food industry drum dryer applications.

On-site coating can offer significant advantages compared with removing, transporting or replacing large cylinders. Depending on the condition of the equipment, PR Rolls can support the project with inspection, measurement, grinding, surface preparation and coating.

A typical Tecno Diamond FS project may include:

• Inspection of the drum dryer surface
• Surface condition assessment
• Measurement and documentation
• Grinding or surface preparation when required
• Application of Tecno Diamond FS coating
• Final quality control
• Maintenance recommendations
• Typical applications

Tecno Diamond FS is especially suitable for drum dryers and other demanding food industry applications where a durable, food-grade surface is required.

Potential application areas include:

• Drum dryers for food production
• Drying cylinders in food processing
• Equipment exposed to acidity
• Surfaces exposed to scraping or doctoring
• Processes where product release and cleanability are important
• Food production equipment where long service life is required

Why choose Tecno Diamond FS?
Tecno Diamond FS is more than a protective coating. It is a food-grade approved surface solution designed to help food producers improve equipment performance, reduce wear and extend the lifetime of existing cylinders.

Choose Tecno Diamond FS when you need:

• A food-grade approved coating
• A coating developed especially for drum dryers
• High resistance to wear and scraping
• Protection against acidic operating conditions
• A homogeneous and durable surface
• A practical alternative to cylinder replacement
• To replace old chrome coated surfaces
• Support from an experienced on-site coating specialist

Request more information about Tecno Diamond FS
If your drum dryer surface is worn, difficult to clean, exposed to acidity or causing release problems, Tecno Diamond FS may be the right coating solution.

Contact PR Rolls to discuss Tecno Diamond FS for your food industry application.