Doctor blade, inking arrangement and use of doctor blade in flexographic printing
AssigneeBTG Eclepens S.A.
InventorAlexandre Claudon
Life of this patent
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Abstract
A doctor blade (5, 7) for contact with an anilox roller (15) comprises a flat, elongate base element having a thickness of less than about 0.3 mm, which, along a longitudinal region of the doctor blade adapted for contact with said anilox roller, is provided with a coating (43). The coating comprises a metal matrix and at least about 65% by weight of one or more ceramic(s). The coating comprises 0 to 65% by weight of chromium carbide. An inking arrangement comprises an anilox roller and a doctor blade. A doctor blade is used in flexographic printing.
Claims20
An inking arrangement comprising:
- an anilox roller;
- and
- a doctor blade for contact with the anilox roller,
- the doctor blade comprising a flat, elongate base element, which, along a longitudinal region of the doctor blade adapted for contact with the anilox roller, is provided with a coating, the coating comprising a metal matrix and at least 65% by weight of at least two ceramics, the at least two ceramics including:
- chromium carbide in an amount of 10% to 65% by weight of the coating;
- and
- tungsten carbide in an amount of 25% to 85% by weight of the coating,
- wherein the doctor blade further comprises a front face, an adjacent face, and a rounded cross-section along the longitudinal region of the doctor blade adapted for contact with the anilox roller, wherein the rounded cross-section has a diameter comprising a center, and wherein the center of the diameter is located substantially at a bisectrix between the front face and the adjacent face of the doctor blade.
A method in flexographic printing, comprising contacting a doctor blade with an anilox roller, the doctor blade comprising a flat, elongate base element, which, along a longitudinal region of the doctor blade, is provided with a coating comprising a metal matrix and at least 65% by weight of at least two ceramics, the at least two ceramics including:
- chromium carbide in an amount of 10% to 65% by weight of the coating;
- and
- tungsten carbide in an amount of 25% to 85% by weight of the coating, wherein the doctor blade further comprises a front face, an adjacent face, and a rounded cross-section along the longitudinal region of the doctor blade adapted for contact with the anilox roller, wherein the rounded cross-section has a diameter comprising a center, and wherein the center of the diameter is located substantially at a bisectrix between the front face and the adjacent face of the doctor blade.
Dependencies are inferred from the claim text.