A polishing pad is provided. The polishing pad comprises a polishing layer and a metal-containing layer. The polishing layer has a polishing surface and a backside surface opposite to each other, wherein the backside surface has a plurality of cavities. The metal-containing layer is disposed on the backside surface of the polishing layer and fills into the cavities, wherein a first contact area is between the metal-containing layer and the backside surface of the polishing layer, and the first contact area is larger than the orthogonal projection area of the polishing layer.

Disclosed herein are a method of fabricating sandpaper for grinding industrial parts and sandpaper fabricated by the method. The method includes: a cutting step of cutting sandpaper to a set length; a cutoff hole formation step of forming a plurality of cutoff holes in one side periphery of the sandpaper in a lengthwise direction; a winding step of forming a roll of sandpaper by winding the sandpaper around one side of a spindle; a taping step of temporarily fastening the roll of sandpaper by winding tape; a bonding step of securely fastening the one side of the roll of sandpaper by applying bond to a side surface of the roll of sandpaper; and a drying step of drying the bond for a set time. In the sandpaper, a plurality of cutoff holes is formed in one side periphery of the sandpaper in a lengthwise direction.

A packaged abrasive article comprises an abrasive article hermetically sealed within a bag. The abrasive article comprises abrasive particles at least partially retained in a phenolic binder. The bag comprises a multilayer barrier film that comprises: a first substrate layer; a first polymerized acrylic layer disposed on the first substrate layer; an aluminosilicate layer disposed on the first polymerized acrylic layer; and a second polymerized acrylic layer disposed on the aluminosilicate layer.

Provided are abrasive articles, and related methods, that include a flexible abrasive layer having opposed first and second major surfaces, a foam backing bonded to the second major surface, the foam backing being resiliently compressible, and a plurality of slits disposed on the first major surface and penetrating through the flexible abrasive layer and at least partially through the foam backing. In further disclosed embodiments, the abrasive article includes, a flexible abrasive layer having opposed first and second major surfaces, a structured member extending across the second major surface of the flexible abrasive layer, where the structured member and the flexible abrasive layer have respective three-dimensional patterns of discrete, isolated wells that correspond to each other, and a foam backing extending across a major surface of the structured member opposite the flexible abrasive layer, the foam backing being resiliently compressible.

A sander for use with a vacuum extraction system is provided. The sander comprises a body, a releasable retention mechanism on an upper surface adjacent each end of the body, a platen, the platen adjacent to and attached to a lower surface of the body and having a pattern of grooves, an at least one vacuum port extending through the body and platen and positioned such that the grooves in the platen are substantially directed to the at least one vacuum port, wherein the improvement comprises a perforated sandpaper sheet, the perforated sandpaper sheet comprising: an upper sandpaper layer; a lower plastic polymer foam layer; and a plurality of apertures in a plurality of series; the plurality of series of apertures in a pattern configured to align with the pattern of grooves in the platen of the sander, the plurality of apertures occupying about 5 percent of an upper surface area of the sandpaper sheet.

A method and apparatus for polishing a substrate that includes a polishing article comprising a polymeric sheet having a raised surface texture, which is formed on the surface of the polymeric sheet is provided. According to one or more implementations of the present disclosure, an advanced polishing article has been developed, which does not require abrasive pad conditioning. In some implementations of the present disclosure, the advanced polishing article comprises a polymeric sheet having a polishing surface with a raised surface texture or micro-features and/or a plurality of grooves or macro-features formed in the polishing surface. In some implementations, the raised surface texture is embossed, etched, machined or otherwise formed in the polishing surface prior to installing and using the advanced polishing article in a polishing system. In one implementation, the raised features have a height within one order of magnitude of the features removed from the substrate during polishing.

The present disclosure provides abrasive articles that include an abrasive layer having a contact surface, a first layer coupled to the abrasive layer, and a second layer coupled to the first layer. The first layer is configured to provide contact pressure to the abrasive layer, such as through a higher hardness than the second layer. The second layer is configured to provide conformability to the abrasive layer, such as through a higher compressibility than the first layer. The resulting abrasive articles may exert a consistent contact pressure against a substrate with increased conformability around the substrate, reduced hysteresis, improved removal rate consistency, and/or improved lifetime over abrasive articles that do not use the multiple layer construction described above.

A method for manufacturing a grinding tool which has a binding agent based on aromatic molecules includes cutting an abrasive material parent web with a laser device to form at least one inner contour of the grinding tool, and punching out an outer contour of the grinding tool from the abrasive material parent web.

An automatic feeder for a strip of material, comprising: an orientation assembly (10), structured to retain a free end (T) of a strip (R) on a predetermined gripping plane (11), in a waiting position; a gripping device (20), structured to grasp the free end (T) of a strip (R) and to translate the end (T) from the waiting position to a feeding position, in which the end (T) can be grasped by another operating device (D).

This specification relates to a solution for overcoming the problem of loose loops formed by cutting the abrasive products. A method of obtaining an abrasive product (100) is provided. The method comprises providing a substrate (101, 201, 301) having a first surface (101a, 201a, 301a) and a second surface (101b, 201b, 301b, 501b), providing abrasives (102, 202, 302) on the first surface (101a, 201a, 301a) of the substrate and providing loops (103, 203, 303) on the second surface (101b, 201b, 301b, 501b) of the substrate. The method further comprises providing a melted and/or burnt area (304, 404, 504) on the second surface (101b, 201b, 301b, 501b) of the substrate by melting and/or burning the loops, and cutting the substrate (101, 201, 301) in order to provide the abrasive product (100). Further, the abrasive product (100) is provided.