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Coating Method

Electrostatic coating

The right method ensures optimal application of the abrasive grit to the backing. The exact, standardised selection of abrasive grits is of vital importance to the surface quality of the workpiece. An important factor in this regard is the type of process used to apply the grit minerals to the backing.

Closed coating

Closed Coat means that close to 100% of the backing on a coated abrasive product is covered in abrasive grain.
Advantages:
1. Closed coat products would be the most aggressive - They would be the most aggressive because every possible space that could be dedicated to a cutting grain is dedicated to a cutting grain.
2. Closed coat products will provide the finest finishes - They would provide the best finishes because as there are no gaps in the grain coverage. Whatever grit you are sanding at should provide the full benefit of the work that grain is capable of doing.
Applications: For high cutting efficiency especially designed for heavy sanding
1: For sanding high hardness metal
2: For sanding stone
Closed Coat products:

Semi open/ Open coat

Semi-Open and Open Coat means that there is more space between grain particles on the abrasive product. Semi-Open Coat usually refers to about a 30% reduction in the amount of grain on the backing and Open Coat usually means that there is about 50% coverage.
Advantages:
1. semi-open and open coat products will cut less aggressively - products have less grain on the backing, which results in less cutting power per grit designation
2. semi-open and open coat products will finish coarser per grit than closed coat products - products have gaps in their grain coverage, so the finishes they provide will not be as even and will fall to the coarse end of the designated grit’s finishing parameters..
Applications: For high cutting efficiency especially designed for heavy sanding
1. For polishing paint and filler
2. For drywall sanding

About Star Abrasives

Suzhou Star Abrasive Products Co., Ltd.It has three manufacturing bases in Hangzhou, Shanghai and Yancheng. The bases and one trading company built a complete supply chain system. It have six advanced full automatic production lines, twelve convertion lines and well equipmented R&D center. The system pay more attention to the mediu...

Contact us

Address of Converting Factory: Building A, NO.56 Zhongjie Road,Qiandeng Town, Kunshan City, Jiangsu province, China.

Tel: +86 512 57468266

Fax: +86 512 57468266

E-mail: star@star-abrasives.com


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