Stock material or miscellaneous articles – Composite – Of inorganic material
427122, 427123, 427131, 427132, 427404, 4274121, 4274342, 428694BM, H01F 1002
A wet-on-wet application process by means of a sheet extruder having at least two slot dies is described, the upper layer containing metal powders and/or metal powder alloys while the lower layer contains the same magnetic pigments and conductivity-increasing and/or transparency-reducing additives, preferably carbon black, and both layers having virtually the same rheological properties. The magnetic recording medium has improved conductivity and very good running behavior, in particular when used as a mirror mastertape.
patent: 5318828 (1994-06-01), Noguchi et al.
BASF Magnetics GmbH
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