Method for making a continous metal band having surface impressions
AssigneeStandex International Corporation
InventorWilfried Werthmann
Life of this patent
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Abstract
A working duplicate of an endless master band having a pattern impressed on its surface for use in the production of laminated boards is produced by first making a polyurethane cast of the impressed pattern in the form of an endless, flexible plastic band. A metal layer is galvanically deposited over the pattern on the plastic band to form a galvanic band which functions as a working duplicate after the plastic band has been peeled off. The resultant galvanic band is an exact duplicate of the original master band and is utilized in a press for impressing the pattern on the surface of laminated boards.
Claims7
A method for making an endless metallic band having a pattern for the continuous production of laminated boards, comprising the steps of providing a first endless band having the pattern on the surface thereof casting an endless, plastic band over the surface of the first endless band having the pattern so that the plastic band has a corresponding pattern on a surface thereof, rendering the surface of the plastic band which carries the pattern electrically conductive, electrolytically depositing a metal layer over the pattern on the surface of the plastic band to thereby form a working copy of the plastic band, and removing the plastic band from the working copy so that the working copy constitutes a duplicate of the first endless band.
Dependencies are inferred from the claim text.