| 摘要 |
PROBLEM TO BE SOLVED: To provide a manufacturing method of a super heat-resistant bobbin material for a voice coil capable of withstanding even a high temperature condition of 300 to 350°C. SOLUTION: An alcohol-soluble polyamide resin, a bisphenol epoxy resin, and an alkoxysilane-modified epoxy resin are dissolved in mixture solution of a cresol and a xylene to prepare an adhesive varnish, the adhesive varnish is coated and impregnated on a bobbin base member for the voice coil, and thereafter an adhesive layer in a semi-curing state is formed, which can be swollen or soluble in an alcohol group solvent. COPYRIGHT: (C)2006,JPO&NCIPI |
