Resin Fiber Discs: Storage and Handling

Why Proper Storage is Important

 

When using coated abrasives, one of the most important factors is storage and handling. Proper handling and storage are crucial to ensure the product is always in optimal working condition. Improper storage can create safety hazards and shorten the lifespan of the abrasive.

 

Coated abrasives, such as resin fiber discs, require extra care during storage because their backing and adhesives are sensitive to climate changes and will absorb or lose moisture depending on the environment.

 

 

The efficiency of coated abrasives increases with decreasing moisture content. However, if the coated abrasive or resin fiber disc becomes too dry, problems such as curling or brittleness may occur. Handling difficulties also increase as the abrasive dries out.

 

Ideal Storage and Handling of Resin Fiber Discs:

 

To ensure optimal performance of resin fiber discs and other coated abrasives, the ideal storage environment is 40-50% humidity and a constant temperature of 70-75°F (21-24°C). Storing products indoors, away from any direct vents, air intakes, radiators, etc., will help extend product life.

Resin fiber discs and other coated abrasives should be stored sealed in closed cartons or storage boxes until ready for use.

 

Cartons, boxes, and packaged rolls should remain intact until the product is needed.

 

Cartons, boxes, and rolls should be stored flat, not upright, to prevent deformation.

 

Proper storage of unused materials avoids unnecessary expenses and safety hazards, and maximizes product lifespan! Proper storage saves money every year!

 

Checking Resin Fiber Discs for Signs of Poor Storage Conditions:

 

Loading and Burning Surfaces

 

Excessive humidity can soften the adhesives, resin coatings, and fillers used in the cloth finishing process. This causes the abrasive particles to be pressed into the backing instead of penetrating the surface of the workpiece.

 

When using grinding discs, frictional heat constantly accumulates, further softening the adhesive. Subsequently, dirt quickly accumulates on the surface of the grinding disc, burning the workpiece. In high humidity environments, product performance and lifespan can decrease by up to 50% with

prolonged use. Cracks or Breakage

 

Storing resin fiber discs in an overly dry environment can lead to cracks on the disc surface. At this point, the disc may become too brittle, not only preventing proper function but also posing a safety hazard.

 

Warped/Curled Resin Fiber Discs

 

Cloth-backed resin fiber discs can absorb moisture and curl in the direction of the grain, rendering them temporarily unusable.

Excessive drying can cause the disc to lose its flexibility, making it difficult to handle. Cloth-backed discs may also curl in the direction of the grain if they lose too much moisture.

 

Repairing Warped or Curled Discs

 

A curled or bent resin fiber disc isn't necessarily ruined!

 

When you receive fiber discs in the mail, climate changes during shipping can sometimes cause the discs to curl slightly. If you receive discs that are curled or slightly bent, they are still usable and easily repairable.

 

Unless the curling is excessive, in most cases, they will flatten out when mounted onto a suitable rubber backing pad. The pressure applied by the nut will flatten the disc, restoring its functionality.

 

You can also lay them flat and place a heavy object on top to flatten the curled fiber discs before use. This is the same method used to flatten a rolled-up carpet.

 

As mentioned above, checking the disc for brittleness and other safety issues is crucial. If you are unsure of the disc's age and it feels too brittle, we always recommend prioritizing safety and discarding old or questionable discs. Ensuring a safe work environment is paramount.

 

Alternative Storage Solutions in Less Than Ideal Conditions:

 

If you cannot provide ideal storage for resin fiber sanding discs or other coated abrasives, consider using a spindle to keep the resin fiber sanding discs flat. Spindles are also relatively easy to make yourself. To prevent the discs from curling or warping, you can place a weight or clamp on top of the stack of discs to keep them flat.