| 摘要 |
PURPOSE:To obtain a ballpoint pen tip in which a film of one or more types of mixtures to be selected from fluorine resin having a perfluoroalkyl group, a methylhydrogesiloxane resin having a special structure, a stearic acid, etc., is formed at an end and/or an outer surface near it to reduce drip down on a sheet surface. CONSTITUTION:A firm 7 of one or more types of mixtures to be selected from fluorine resin having a perfluoroalkyl group, methylhydrogensiloxane resin represented by a formula, stearic acid, stearate, oxystearic acid, and oxystearate is formed at an end 5 and/or an outer surface 6 of its vicinity of a metal ballpoint pen tip A. (In the formula, n is one or more of integer). As result, a tip in which drip down on a sheet surface is reduced and ink to be adhered to the tip is decreased can be easily manufactured. |
