As we know, all abrasive flap disc is a combination of abrasive cloth adhered to a rigid backing plate. The backing plate can ensure the stability of the flap disc during operation and the quality of abrasive cloth will affect the grinding performance of abrasive flap disc. At present, the cost price of flap disc mainly depend on the backing plate and abrasive flaps , so manufacture can supply any kind abrasive flap disc with different price by using different backing plate,different quality level abrasive cloth and different quantity of abrasive flaps according with customers' need .
About the backing plate used on flap disc , there are three different basic material types:
Fiberglass backing plate is the most popular backing plate material, just because it have high strength and light weight, also it can also improve the strength by adding the layers of fiberglass nets during the manufacture process, so that it can make flap disc reach the higher speed to meet some European customers' need. During the flap disc using process, fiberglass backing plate can also help absorb vibration and can be consumed during operation without smearing the workpiece.
Plastic backing plate is becoming popular, just because it can provide some conformability and can be trimmabled. Because the best plastic backing plate should be made from high pure raw plastic material,it also make the best plastic backing plate have higher cost than that of the fiberglass backing plate , although it can make the flap disc keep the same performance of fiberglass backing flap disc.
Metal backing plate is the third choice and the least popular, just because it have the heavy weight and could not consumed during the flap disc using process, so that it will affect the grinding performance and using comfort, also this steel backing plate have bad heat dissipation. So they are only for the applications which demand extra-high strength and rigid support.
At present , in our company, we not only supply the flap disc with these three main backing plate, but also we develope one kind new metal backing abrasive flap disc. The backing plate of this kind flap disc is made from mixed fiberglass backing plate and metal steel backing plate.
Compared with common metal backing abrasive flap disc,it have the main advantage as follows:
1: It can make backing plate synchronous consumption of flap disc;
2: It can also make flap disc have good heat dissipation.
3: Because of the fiberglass backing plate mix using, it can also help absorb vibration during the flap disc using process, so that it can make direct user have the better using feel.
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