Kwh Mirka Ltd

Mirka Ltd.

Oy Kwh Mirka Ab

Göran Höglund

Hans Hede

Mats Sundell

Caj Nordström

Markus Kass

Beatriz Meana-Esteban

Stefan Lindvall

Beatriz Esteban

A method for producing a groove pattern on a cylinder surface includes providing an abrasive module, including an abrasive mesh article and collector block, providing a patterning head, which including the abrasive module and pressing actuator, pressing the abrasive module against the cylinder surface by using the actuator, forming a plurality of grooves on the cylinder surface by causing relative motion between the abrasive module and cylinder surface, and drawing gas through the abrasive mesh article to collect particles released from the cylinder surface. The abrasive mesh article includes a plurality of abrasive grains bonded to a flexible mesh backing, defining openings. The collector block has a curved supporting surface defining openings. The abrasive mesh article is attached to the curved supporting surface by a releasable fastening system. The openings of the flexible mesh backing are in communication with the openings of the collector block via the releasable fastening system.

Method and apparatus for forming a groove pattern on a cylindrical surface

A method for producing endless abrasive articles () comprises: &#x2014;providing a mandrel coil (), which comprises a first complete turn (BO) formed of an endless mandrel belt (BO), &#x2014;feeding the endless mandrel belt (BO) to an input end (INO) of the mandrel coil () and unwinding the mandrel belt (B) from an output end (OUT) of the mandrel coil () so as to move the surface of the first complete turn (BO) of the mandrel coil (), &#x2014;forming a laminated sleeve (SLEEVE) by feeding a first strip (S) on the moving surface of the first complete turn (BO) of the mandrel coil (), and&#x2014;forming an endless abrasive article () by cutting the laminated sleeve (SLEEVE).

Method and apparatus for producing endless abrasive articles and a produced abrasive article

A polishing pad for polishing a surface, material for a polishing pad and a method for manufacturing material for a polishing pad. A polishing pad has a backing layer and a polishing layer made of sheep wool fibres fixed onto a surface of the backing layer, wherein the polishing layer has loops made of sheep wool fibres.

Polishing pad and material and manufacturing method for such

The invention relates to obtaining an abrasive product comprising a backing layer and an abrasive layer, wherein the backing layer comprises propylene homopolymer or copolymer.

Method to provide an abrasive product and abrasive products thereof

The invention relates to obtaining an abrasive product comprising a surface with multiple abrasive zones supported by a backing layer. The abrasive zone are surrounded by interconnected channel portions comprising first channel portions with a first transverse dimension tdand second channel portions with a second transverse dimension tdlarger than the first transverse dimension td

Method to provide an abrasive product surface and abrasive products thereof

The present invention relates to a method and an arrangement for grinding spherical products (), such as e.g. bowling balls, in particular. Such an arrangement comprises at least one grinding machine () having a spherically oscillating grinding movement. A fastening plate () fitted on the grinding machine has a spherically shaped bearing surface () and a grinding product () fitted on this, which through its slits () adopts a position with accuracy of shape on the spherically shaped surface. The grinding product () will form a contact surface () in the interface, in which the grinding product cooperates with the spherical product. This contact surface then adopts a radius of curvature arranged to substantially correspond to the radius (r) of the spherical product (). The grinding is performed with a spherically oscillating grinding movement, which is adapted to the radius of the spherical product and simultaneously coincides with the radius of curvature of the contact surface.

Arrangement and method for grinding spherical products

Machine polishing pad

The invention relates to an abrasive product intended to be driven in a particular grinding direction over the object to be abraded. The abrasive product is composed of parallel threads placed at a distance from one another and running in the grinding direction and transverse abrasive threads provided with an abrasive coating placed at a distance from one another and fastened to the parallel threads. The open structure allows to easily remove the grindings from the abrasive product during abrasion, thus extending the working life of the abrasive product.

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Nykarleby, Finland

Göran Höglund