公开(公告)号：JPH08227524A

公开(公告)日：1996-09-03

申请号：JP32029595

申请日：1995-12-08

Applicant: BASF MAGNETICS GMBH

Inventor： MISHIERU MUNHI ,  INGO BURAURU ,  PEETAA NAAGERU

IPC: B05C5/02 ,  B05C9/06 ,  B29C47/00 ,  G11B5/848

Abstract: PROBLEM TO BE SOLVED: To form a layer of 1μm thick or less by disposing a rectangular prism magnet such that lines of magnetic force pass through a block having upper surface extending in parallel with the outlet opening of a molding slit substantially perpendicularly to the flowing direction of magnetic dispersion liquid. SOLUTION: A nonmagnetic carrying layer 4 runs in the direction of arrow in the vicinity of outlet opening 7 of an extrusion molder having upper and lower blocks 3, 1, and a molding slit 2 made between. At the outlet opening, a magnetic dispersion liquid is squeezed, under pressure, from a storage container onto the carrying layer through the slit. A rectangular prism magnet 8 is disposed having field strength at least equal to the coercive force of fine magnetic powder flowing through the molding slit 2 in parallel with the upper plane 12 of lower block 1 while spaced apart by about 2 mm from the lower half part. The magnet is polarized such that the lines of magnetic force pass substantially perpendicularly to the magnetic layer forming direction of magnetic dispersion liquid.