Raw Materials
· Aluminum Oxide
· Silicon Carbide
· Treated Cloth
· Phenol formaldehyde resin
· Other inputs (Glue, ink, etc)
Production starts when the make coat is applied to one side of the backing material. The abrasive grains are then applied using an electrostatic deposition process, in which the grains are given an electric charge. Finally, another layer of adhesive-the size coat-is applied.
The next step, applying the abrasive mineral, is the most important in the manufacturing process because it determines the orientation and density of the mineral. The backing is passed, adhesive side down, over a pan of abrasives that have been electro-statically charged-given an electric charge opposite to the backing. The opposite charge causes the abrasive to adhere evenly to the backing, resulting in a very sharp, fast cutting coated abrasive tool with the maximum life possible.
Once the grain has been imbedded in the make coat, the roll is dried and moved on for application of the size coat. Following application of the size coat, the roll is dried again and cured under carefully controlled temperature and humidity conditions.
Before the coated abrasive roll is converted into a belt or other products, it is systematically flexed or bent to break the continuous layer of adhesive bond. Converting roll material into abrasive belts with cutting strips of coated abrasives to the desired width. Each strip is then cut to the proper length and the ends are joined together. The process does not have any adverse impact on environment since the production is done in a closed system.
Main Machinery
· Electrostatic coating equipment
· Abrasive application
· Adhesive mixer
· Mark printer
· Adhesive coating machine
· Dryer
Auxiliary Machinery
· Re-winding Machine
· Slitting machine
· Cutting machine
· Flat press