Setting new standards for smooth surfaces: - Bosch
Setting new standards for smooth surfaces: - Bosch
Setting new standards for smooth surfaces: - Bosch
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16 I Sanding and Polishing<br />
Abrasive components<br />
<strong>for</strong> perfect <strong>surfaces</strong>: Structure.<br />
Structure of coated abrasives<br />
The structure of a coated abrasive has initial fi xing of the abrasive grains on the backing material by<br />
means of the base coat. The second bonding agent is applied after a drying process and serves to<br />
permanently fi x the abrasive grit on the backing material.<br />
Additional coatings can be applied over the top size coat. These are essentially substances that<br />
counteract premature clogging or choking of the abrasive during sanding or additives that have a<br />
cooling effect during heavy-duty use on metallic materials.<br />
Special coatings<br />
Stearates, highly active (cooling) additives,<br />
antistatic coatings<br />
Top size coat<br />
Synthetic resins, hide glue, additives, fi ller, dyestuffs<br />
Base coat<br />
Synthetic resins, hide glue<br />
Abrasive grit<br />
Zirconia alumina, brown aluminium oxide, semi-friable<br />
aluminium oxide, white aluminium oxide, silicon carbide<br />
Backing material<br />
Paper, cloth, fi bre<br />
Special coating<br />
Top size coat<br />
Abrasive grit<br />
Base coat<br />
Backing material
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