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:
Nov. 12, 1996
Filed:
Nov. 28, 1994
Hartwig Andries, Mortsel, BE;
Werner Krafft, Leverkusen, DE;
Willem Mues, Tremelo, BE;
Jan Gilleir, Mortsel, BE;
Agfa-Gevaert, N.V., Mortsel, BE;
Abstract
A method is provided for applying a magnetic layer onto a polymeric sheet or web material comprising the steps of (i) simultaneously coextruding a non magnetic 'dummy' layer and a magnetic layer onto said polymeric sheet or web material, said non magnetic 'dummy' layer being closest to the support (ii) drying the coextruded layers characterised in that the sum of the wet coating thickness of said 'dummy' layer (Th.sub.dum) and of the wet coating thickness of said magnetic layer (Th.sub.mag) fulfils the equation 25 .mu.m.ltoreq.Th.sub.dum +Th.sub.mag .ltoreq.100 .mu.m and that the ratio of (Th.sub.mag) to (Th.sub.dum) fulfils the equation 0.01.ltoreq.Th.sub.mag /Th.sub.dum .ltoreq.1.