Surface treatment of sheet-or plate-like blanks

Details Surface treatment of sheet-or plate-like blanks Surface treatment of sheet-or plate-like blanks

B - Operations, Transporting

44

B

13/1, 18/1029, 4

B44B 5/00 (2006.01) B21H 7/00 (2006.01) B24B 19/02 (2006.01) B29C 43/22 (2006.01)

Patent

CA 2034314

SURFACE TREATMENT OF SHEET- OR PLATE-LIKE BLANKS ABSTRACT OF THE DISCLOSURE One side of a sheet- or plate-like bank of metallic, plastic and/or other material is provided with at least one set of parallel grooves prior to being provided with an array of pyramidal and/or conical depressions. The grooves can be formed by brushes or by grinding, and the depressions can be formed by a rotary debossing tool having a peripheral surface provided with crossing transversely extending rows and circumferentially extending columns of protuberances. The treatment enhances the ability of the one side of the thus obtained sheet- or plate-like body to accept and retain a layer of lacquer, to be provided with an adherent layer of oxide or to accept a layer of adhesive prior to being bonded to a similarly treated or to an untreated second plate- or sheet-like body. The depth of the depressions can match or approximate the average depth of the grooves. The grooves can form two set of parallel grooves, and the grooves of one set can cross the grooves of each other set at an angle of 90 +45 .

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