Englau Group: Choosing the Right Backing Material for Your Abrasive Application

About the Englau Group

With over 20 years of expertise in the abrasives industry, Englau Group designs, manufactures, and exports a comprehensive range of high-performance abrasive solutions — including bonded cutting and grinding wheels, flap discs, and coated sanding belts. Our products serve the demanding requirements of metalworking, structural fabrication, automotive manufacturing, and precision engineering, and are manufactured in strict accordance with the German EN 12413 standard — a globally recognized benchmark for abrasive tool safety and performance. Our application engineering team works closely with customers to optimize formulations, select the most suitable specifications, and provide technical support that maximizes operational efficiency and tool life.

• Paper Backing
• Paper is the most widely used backing material for coated abrasives, available in a range of weights designated from A to F. Lighter grades (A and B) offer greater flexibility and conformability, making them ideal for hand sanding, contour work, and fine finishing operations. Heavier grades (D, E, and F) offer greater tear resistance and are suited to machine sanding and more aggressive stock-removal applications. Paper-backed abrasives are commonly used on wood, painted surfaces, and light metals.
• Cloth Backing
• Fibre Backing
• Fiber backing — also known as vulcanized fiber — is a rigid, dense substrate produced by chemically treating layers of cellulose paper to create a highly durable composite material. Its exceptional stiffness and impact resistance make it the standard backing material for resin fiber discs used in heavy-duty grinding and surface conditioning. Fiber-backed abrasives are particularly effective for aggressive material removal on steel, stainless steel, and cast iron. They offer superior strength, flexibility, and durability compared to paper, making them the preferred choice for demanding industrial applications. Woven cotton and polyester cloth substrates provide excellent resistance to tearing and heat, enabling their use in high-pressure grinding, belt sanding, and flap disc applications. Cloth-backed abrasives are widely used in metalworking, weld blending, and structural fabrication where robust performance under sustained mechanical stress is required.
• Fiber Backing
• Combination Backing
• Combination backings integrate two or more substrate materials — typically paper laminated with cloth or film — to achieve a balance of flexibility, strength, and conformability that no single material can provide alone. This construction is particularly suited to applications requiring both controlled cutting action and the ability to conform to complex or irregular workpiece geometries, such as profile sanding and contour finishing.
• Specialty Backing Materials
• Beyond the standard categories, Englau Group also offers abrasive products utilizing polyester film and non-woven fiber backings. Polyester film provides an exceptionally flat, dimensionally stable substrate ideal for precision finishing and micro-finishing applications, delivering consistent scratch patterns and tight thickness tolerances. Non-woven fiber backings, by contrast, offer a three-dimensional open structure that resists loading and provides a more uniform finish, making them well-suited to surface conditioning, deburring, and light blending operations across a wide range of materials.