A process for making anti-reflective optical glass comprises the steps of: A. implementing an abrading tool including a carrier having a plurality of diamond cutting wires formed on the carrier; and B. centrifugally and resiliently abrading a substrate of optical glass by the abrading tool to form a plurality of microscopic protuberances or moth-eye like structures on the substrate to thereby reduce the light reflection from the substrate and increase the light transmission in the substrate.

The present invention comprises a grinding machine (1) for grinding a surface of a workpiece (6), wherein the grinding machine (1) has at least one abrasive holder (2), on which at least one abrasive (4) is arranged, and at least one drive device for moving the abrasive holder (2),
wherein the drive device has at least one drive shaft (12), on which an eccentric element (16) is arranged and which can be rotated about an axis of rotation (18), wherein the eccentric element (16) is arranged on the abrasive holder (2) at a distance from the axis of rotation (18), wherein it is possible to adjust the distance.

The present invention comprises a grinding machine (1) for grinding a surface of a workpiece (6), wherein the grinding machine (1) has at least one abrasive holder (2), on which at least one abrasive (4) is arranged, and at least one drive device for moving the abrasive holder (2),
wherein the drive device has at least one drive shaft (12), on which an eccentric element (16) is arranged and which can be rotated about an axis of rotation (18), wherein the eccentric element (16) is arranged on the abrasive holder (2) at a distance from the axis of rotation (18), wherein it is possible to adjust the distance.

The present invention comprises a Grinding or sanding machine for grinding or sanding a surface of a workpiece (8), wherein the grinding or sanding machine has at least one transportation device for transporting a workpiece (8) in a transportation direction; at least one revolving grinding or sanding belt (2); and at least one pressure beam (12) for exerting a pressure in the direction of the transportation device on the grinding or sanding belt (2),
wherein a plate (14) which is mounted so as to be movable in a plane that is perpendicular to the direction of the exertable pressure is disposed between the grinding or sanding belt (2) and the pressure beam (12).

The present invention comprises a Grinding or sanding machine for grinding or sanding a surface of a workpiece (8), wherein the grinding or sanding machine has at least one transportation device for transporting a workpiece (8) in a transportation direction; at least one revolving grinding or sanding belt (2); and at least one pressure beam (12) for exerting a pressure in the direction of the transportation device on the grinding or sanding belt (2),
wherein a plate (14) which is mounted so as to be movable in a plane that is perpendicular to the direction of the exertable pressure is disposed between the grinding or sanding belt (2) and the pressure beam (12).

A grinding machine for grinding a surface of an object has at least one grinding tool with a movably mounted abrasive carrier, and a plurality of abrasive elements attached to the abrasive carrier. An abrasive driving device drives the grinding tool in a first relative movement to the object. A conveying device conveys the object with a second relative movement to the grinding tool through the grinding machine. The plurality of abrasive elements each have a plurality of first surfaces provided with first abrasive bodies for lying against the surface of the object in a first direction of movement of the abrasive carrier and a plurality of second surfaces provided with second abrasive bodies for lying against the surface of the object in a second direction of movement of the abrasive carrier opposite to the first direction of movement of the abrasive carrier. The abrasive drive device is adapted to be operated in the first direction of movement in which the first surfaces of the abrasive elements are in grinding engagement with the surface of the object and in the second direction of movement in which the second surfaces of the abrasive elements are in grinding engagement with the surface of the object.

A grinding machine for grinding a surface of an object has at least one grinding tool with a movably mounted abrasive carrier, and a plurality of abrasive elements attached to the abrasive carrier. An abrasive driving device drives the grinding tool in a first relative movement to the object. A conveying device conveys the object with a second relative movement to the grinding tool through the grinding machine. The plurality of abrasive elements each have a plurality of first surfaces provided with first abrasive bodies for lying against the surface of the object in a first direction of movement of the abrasive carrier and a plurality of second surfaces provided with second abrasive bodies for lying against the surface of the object in a second direction of movement of the abrasive carrier opposite to the first direction of movement of the abrasive carrier. The abrasive drive device is adapted to be operated in the first direction of movement in which the first surfaces of the abrasive elements are in grinding engagement with the surface of the object and in the second direction of movement in which the second surfaces of the abrasive elements are in grinding engagement with the surface of the object.

A plastic soft composition and a scuffing processing method using it, which include a flexible base material having plasticity, a particulate abrasive contained in the flexible base material and having an average particle size of 10 m or more and 1.5 mm or less, and a fibrous support material contained in the flexible base material and having an average fiber diameter width of 10 m or more and 1.0 mm or less.

A plastic soft composition and a scuffing processing method using it, which include a flexible base material having plasticity, a particulate abrasive contained in the flexible base material and having an average particle size of 10 m or more and 1.5 mm or less, and a fibrous support material contained in the flexible base material and having an average fiber diameter width of 10 m or more and 1.0 mm or less.

An exterior material may be configured to form an exterior of a home appliance, the exterior material includes a base material having a hierarchical circular structure pattern on the surface. The hierarchical circular structure pattern may include a plurality of circular structures having diameters different from each other, and a pattern density may be, in percentage of area of the surface, about 20 to 90%.