Abrasive article having a line of weakness
Assignee3M Innovative Properties Company
InventorsTimothy T. Beyer, Brant A. Moegenburg, Mark A. Swanson, Schoen A. Schuknecht, Charles R. Wald
Life of this patent
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Abstract
A coated abrasive article (1) comprises a backing (3) having an abrasive coating (5) on one side, an attachment layer (7) on the other side of the backing, and a line of weakness (9) that does not penetrate the front face of the abrasive coating (5). The line of weakness, which may be formed using a laser beam, comprises a through-cut (11) in the attachment layer (7) and perforations (13) in the backing (3), and permits one part of the abrasive article (1) to be separated from another part. Alternatively, the abrasive article can be used in its original form.
Claims13
A coated abrasive article comprising
- a backing having an abrasive coating on one side, the abrasive coating comprising an outer face;
- an attachment layer on the other side of the backing, the attachment layer comprising a loop material;
- wherein a line of weakness is formed in the article that penetrates through the attachment layer but does not penetrate the outer face of the abrasive coating, the line of weakness permitting one part of the abrasive article to be separated from another part.
A method of making an abrasive article comprising
- providing a coated abrasive article comprising a backing having an abrasive coating on one side and an attachment layer comprising a loop material on the other side, the abrasive coating comprising an outer face;
- and
- directing a laser beam towards the backing from the side opposite the abrasive coating to form a line of weakness in the coated abrasive article that does not penetrate the outer face of the abrasive coating, the line of weakness permitting one part of the abrasive article to be separated from another part.
A method of making an abrasive article comprising
- providing a coated abrasive article comprising a backing having an abrasive coating on one side and an attachment layer comprising a loop material on the other side, the abrasive coating comprising an outer face;
- and
- directing a laser beam towards the backing from the side opposite the abrasive coating to form a line of weakness in the coated abrasive article that cuts through the attachment layer and produces perforations in the backing, but does not penetrate the outer face of the abrasive coating, the line of weakness permitting one part of the abrasive article to be separated from another part.
Dependencies are inferred from the claim text.