EP 1199729 A1 20020424 - Flexible, moldable bonded magnet and process for producing same
Title (en)
Flexible, moldable bonded magnet and process for producing same
Title (de)
Flexibler, gegossen und gebundener Magnet, und Verfahren zu seiner Herstellung
Title (fr)
Aimant flexible moulable à liant et procédé de fabrication d'un tel aimant
Publication
Application
Priority
US 69320900 A 20001020
Abstract (en)
Magnetic materials, such as ferrite, are produced. Mixing the magnetic powder with a thermoplastic elastomer material and a lubricant material using a twin screw compounding extruder forms the magnetic compound. After allowing for a mixing period, the mixed compound is granulated (i.e., reduced to small particles). Since the compound utilizes a thermoplastic elastomer rather than a thermoset elastomer material to achieve flexibility, the compound is amenable to further processing by injection molding. Thus the granulated compound is processed by an injection molding machine and the molded parts are afterwards pulse magnetized. Parts may be magnetized during injection molding. This results in a finished, flexible bonded magnet product formed according to complex shape specifications and magnetized in accordance with a variety of magnetization patterns. <IMAGE>
IPC 1-7
IPC 8 full level
H01F 1/055 (2006.01); H01F 1/057 (2006.01); H01F 1/059 (2006.01); H01F 1/08 (2006.01); H01F 1/117 (2006.01); H01F 41/02 (2006.01)
CPC (source: EP)
H01F 1/0558 (2013.01); H01F 1/0578 (2013.01); H01F 1/059 (2013.01); H01F 1/083 (2013.01); H01F 1/117 (2013.01); H01F 41/0266 (2013.01)
Citation (search report)
- [Y] US 3903228 A 19750902 - RIEDL KENNETH M, et al
- [YXA] US 4308155 A 19811229 - TADA TAKEO, et al
- [A] US 5958283 A 19990928 - SCHMID EDUARD [CH], et al
Designated contracting state (EPC)
DE ES FR GB IT
DOCDB simple family (publication)
DOCDB simple family (application)
EP 01650115 A 20011009