Method for preparing coated abrasive having three-dimensional abrasive structures
AssigneeSuntek Industries Ltd.
InventorJeung Woon Kim
Life of this patent
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Abstract
The method of the subject invention, which comprises (a) forming a plurality of abrasive structures having a three-dimensional shape on a backing by using a first abrasive slurry and drying the abrasive structures, and (b) spray-coating in a specific way a second abrasive slurry over the three-dimensional abrasive structures to form a coating layer and drying the coating layer, provides a coated abrasive having improved flexibility, surface roughness, and use life.
Claims20
A method for preparing a coated abrasive having three-dimensional abrasive structures, comprising:
- (a) forming a plurality of abrasive structures having a three-dimensional shape on a backing by using a first abrasive slurry and drying the abrasive structures, and
- (b) spray-coating a second abrasive slurry over the three-dimensional abrasive structures to form a coating layer thereon and drying the coating layer,
- wherein the second abrasive slurry is sprayed over the abrasive structures at an angle (A) calculated by formula I:
- A=atan {H/(D−R/2)} (I)
- in which A is the angle between the line of spray and the horizontal line, H and R are the height (μm) and the diameter (μm) of the three-dimensional abrasive structure, respectively, and D is the distance (μm) between two adjacent three-dimensional abrasive structures.
A method for preparing a coated abrasive having three-dimensional abrasive structures, comprising:
- (a) forming a plurality of abrasive structures having a three-dimensional shape on a backing by using a first abrasive slurry and drying the abrasive structures,
- (b) spray-coating a first abrasive composition over the three-dimensional abrasive structures, electrostatic-coating abrasive grains, followed by drying, to form a first adhesive layer, wherein the first adhesive composition is sprayed over the abrasive structures with an angle (A) calculated by the formula I:
- A=atan {H/(D−R/2)} (I)
- (c) spray-coating a second adhesive composition over the first adhesive layer, followed by drying to form a second adhesive layer, in which the second adhesive composition is sprayed over the first adhesive layer at an angle (A′) calculated by the formula II:
- A′atan {H′/(D−R/2)} (II)
- in which A or A′ is the angle between the line of spray and the horizontal line, H and R are the height (μm) and the diameter (μm) of the three-dimensional abrasive structure, respectively, H′ is the height of the three-dimensional abrasive structures obtained in (b), and D is the distance (μm) between two adjacent three-dimensional abrasive structures.
Dependencies are inferred from the claim text.