| 摘要 |
PURPOSE:To provide a wettable and heat-weldable fiber consisting of a composite fiber produced by covering a polyester with a polyethylene copolymer containing octene-1 and a wetting agent, having excellent spinnability and suitable for the production of a nonwoven cloth for disposable diaper or sanitary napkin. CONSTITUTION:The objective heat-weldable fiber has a single filament fineness of <=8 denier and composed of a polyethylene terephthalate covered with a straight-chain low-density ethylene copolymer containing 1-15wt% octene-1 and 0.1-5wt% wetting agent and having a density of 0.90-0.94g/cm<3>, a melt index of 5-45g/10min measured in accordance with ASTM D-1238(E) and a heat of fusion of >=25cal/g measured by DSC. The wetting agent is preferably a mixture of mono-, di- and triglycerides or its combination with an alkoxylated alkylphenol, a polyalkylene fatty acid ester, etc. |
