The types of abrasive, base, bonding agent, and technology used in sandpaper grinding materials are constantly improving. Water sandpaper, dry sandpaper, and sponge sand paper are widely used in furniture production due to their high production efficiency, good surface quality of the machined components, and low production cost. The final product quality of household products is inseparable from the grinding process. Sponge sandpaper is the main tool for polishing process.
Sponge sandpaper is a strip tool used to grind and polish materials, which is made of abrasive material bonded to flexible materials such as paper and cloth. Paper-based sponge sand paper is relatively hard and can produce a high gloss surface. Paper-based sponge sand paper is used in precision grinding and ultra-precision grinding. Cloth-based sponge sand paper has higher strength than paper-based sponge sand paper and is less sensitive to temperature and humidity. Cloth-based sponge sand paper is more durable than paper-based sponge sand paper. Common abrasives used in furniture production include alumina, silicon carbide, zirconia alumina, garnet, and glass sand for hand sandpaper, each of which has its own unique characteristics.
In general, for sponge sand paper, coarse grain size is used for large plasticity and large abrasive area, in order to avoid embedding debris and for soft workpieces; fine grain size is used for fine grinding, hard workpieces, etc. The abrasive is bonded to the base by a bonding agent, which should have strength, elasticity, heat resistance, and water resistance. The most commonly used bonding agents are animal glue and synthetic resin. Animal glue is not water-resistant, and synthetic resin has good water resistance. Water-resistant sponge sand paper uses a water-resistant synthetic resin as the base and topcoat and undergoes strict waterproofing treatment. By selecting suitable base, abrasive, and bonding agent based on the processing object and process technology requirements, sanding processing requirements can be achieved.
As an important member of the coated abrasive family, sponge sand paper plays a critical role in automotive repair and paint polishing, manual sanding of furniture, surface polishing of plastic products, and surface treatment of metal rust and plastics.
Like dry sandpaper and water sandpaper, sponge sand paper is also composed of substrate, bonding agent, and abrasive. The abrasive of sponge sand paper is generally fine and suitable for precision grinding and polishing of workpieces. The bonding agent also has the characteristics of high strength, good toughness, and good water and heat resistance. The advantage of sponge sand paper for dry and wet sanding lies in the use of specially treated substrates and water-resistant synthetic resin as the base and topcoat, which achieves excellent grinding results between abrasive and workpiece.
Sponge sand paper has the advantages of good touch, strong wear resistance, significant dry and wet grinding effects, and can be reused, which is energy-saving and environmentally friendly. In specific fields of fine grinding, it has obvious advantages over general sandpaper.