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MAGNET MATERIAL COMPOSITION 发明申请

2023-03-04 3830 85K 0

专利信息

申请日期 2025-07-11 申请号 JP2007107464
公开(公告)号 JP2008270286A 公开(公告)日 2008-11-06
公开国别 JP 申请人省市代码 全国
申请人 KANEKA CORP; TOCHIGI KANEKA CORP
简介 PROBLEM TO BE SOLVED : To solve a matter that when ferromagnetic powder of high residual magnetic flux density is added to resin and extrusion molded while applying a magnetic field, the molding may be cracked or split, or extrusion moldability may deteriorate due to the relation between the suction force to the ferromagnetic powder in resin produced by the applied magnetic field and the force for extruding the molding. SOLUTION : In the magnet material composition for magnet roller formed by sticking a magnet piece, produced by extrusion molding an admixture principally comprising ferromagnetic powder and resin binder to the outer circumference of a shaft, the ferromagnetic powder contains anisotropic rare-earth magnetic powder, having a residual flux density (Br) of 1T-2T and the resin binder contains polyolefin-based resin having a melt mass flow rate (MFR) of 5 g/10 min-25 g/10 min. COPYRIGHT : (C)2009, JPO&INPIT


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