Method for continuous printing of precision structures on a glass ribbon, and glass ribbon thus obtained
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United States of America Patent
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Nov 3, 2015
Grant Date -
Nov 8, 2012
app pub date -
Nov 3, 2010
filing date -
Nov 19, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
A method for printing a precision structure on the surface of a glass strip advancing continuously at a rate of at least 1 m/min, using an etching roller (27) applying a printing force against the surface to be etched, the structure to be produced including protruding and recessed regions which have radii of curvature, a preliminary thermal conditioning (26 and 32) being performed upstream of the etching roller; the thermal conditioning is designed to ensure a temperature of the strip (J) over the print thickness and a cooling (29) downstream of the etching roller (27) to ensure a controlled fixing of the structure; the method according to the invention making it possible to determine the parameters that are intimately linked for obtaining a particular structure, notably the print temperature, the printing force and the cooling rate, taking into account a degree of creep between the molding radius (R1) and the post-creep radius (R2).
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