The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 30, 2020
Filed:
Oct. 19, 2018
Christoph Settele, Mönchengladbach, DE;
Bernhard Kernig, Köln, DE;
Jochen Hasenclever, Bonn, DE;
Gerd Steinhoff, Bonn, DE;
Christoph Settele, Mönchengladbach, DE;
Bernhard Kernig, Köln, DE;
Jochen Hasenclever, Bonn, DE;
Gerd Steinhoff, Bonn, DE;
Hydro Aluminium Rolled Products GmbH, Grevenbroich, DE;
Abstract
Provided is a method for production of an aluminium strip for lithographic printing plate supports from an aluminium alloy including (in wt %): 0.05%≤Si≤0.25%, 0.2%≤Fe≤1%, Cu max. 400 ppm, Mn≤0.30%, 0.10%≤Mg≤0.50%, Cr≤100 ppm, Zn≤500 ppm, Ti<0.030%, the remainder aluminium and unavoidable impurities individually at most 0.03%, in total at most 0.15%. In the method, a rolling ingot is cast from an aluminium alloy, and the rolling ingot is homogenised. Further, the rolling ingot is hot rolled to a hot strip final thickness, and the hot strip is cold rolled to final thickness of between 0.1 mm and 0.5 mm. The product of the relative final thicknesses of the aluminium strip after the first and after the second cold rolling pass of the aluminium strip is 15% to 24%.