Method and apparatus for producing endless abrasive articles and a produced abrasive article
AssigneeMirka Ltd
InventorGöran Höglund
Life of this patent
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Abstract
A method for producing endless abrasive articles (100) includes providing a mandrel coil (200), which comprises a first complete turn (B0A) formed of an endless mandrel belt (B0), feeding the endless mandrel belt (B0) to an input end (IN0) of the mandrel coil (200) and unwinding the mandrel belt (B0) from an output end (OUT0) of the mandrel coil (200) so as to move the surface of the first complete turn (B0A) of the mandrel coil (200), forming a laminated sleeve (SLEEVE1) by feeding a first strip (S1) on the moving surface of the first complete turn (B0A) of the mandrel coil (200), and forming an endless abrasive article (100) by cutting the laminated sleeve (SLEEVE1).
Claims17
An endless spiral wound abrasive article, comprising:
- a first strip,
- a second strip attached to the first strip with an adhesive, and
- abrasive grains,
- wherein a first portion of the first strip and a second portion of the first strip define a first seam, a first portion of the second strip and a second portion of the second strip define a second seam, and an orientation angle between the second seam and the edge of the abrasive article is in the range of 1° to 2.5°.
A method for grinding with an endless spiral wound abrasive article, the abrasive article comprising:
- a first strip,
- a second strip attached to the first strip with an adhesive, and
- abrasive grains,
- wherein a first portion of the first strip and a second portion of the first strip define a first seam, a first portion of the second strip and a second portion of the second strip define a second seam, and an orientation angle between the second seam and the edge of the abrasive article is in the range of 1° to 2.5°, the method comprising:
- tensioning the abrasive article by pulling with a tensioning force, and
- grinding an object with the abrasive article when the abrasive article is under the longitudinal tension.
Dependencies are inferred from the claim text.