| 摘要 |
PURPOSE:To increase acid resistance and to prevent deterioration even if heat is applied by covering the surfaces of continuous filaments constituting a nonwoven fabric with specific polyethylene. CONSTITUTION:A continuous filament is formed in binary core-sheath structure by entirely covering the surface of polyethylene telephthalate with polyethylene. The total denier of the core polyester alone is 2-20 denier and denier of core part is 1-15 denier. Weight ratio of core to sheath is 1/5-3/1. As polyethylene, straight-chain low density polyethylene obtained by copolymerizing alpha-olefine having 4-8 carbon atoms with ethylene is used. |
