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[紡萊賽爾噴絲板 Spinneret for Lyocell]

紡萊賽爾噴絲板 Spinneret for Lyocell

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將干法紡絲與濕法紡絲的特點結合起來的化學纖維紡絲方法，又稱干噴-濕紡，簡稱干濕紡。    萊賽爾纖維俗稱“天絲”,以天然植物纖維為原料，于20世紀90年代中期問世，被譽為近半個世紀以來人造纖維史上最具價值的產品。兼具天然纖維和合成纖維的多種優良性能，萊賽爾是綠色纖維，其原料是自然界中取之不盡用之不竭的纖維素，生產過程無化學反應，所用溶劑無毒。     Lyocell纖維物理機械性能優良，尤其是濕強與濕模量，接近于合成纖維。Lyocell纖維具有棉纖維的舒適性、粘膠纖維的懸垂性和色彩鮮艷性，又具有真絲的柔軟手感和優雅光澤，可以純紡，也可與其它天然纖維、合成纖維或再生纖維混紡、交織或復合，也可做成非織造布、紙張與過濾材料等。 Lyocell is a form of rayon which consists of cellulose fiber made from dissolving pulp (bleached wood pulp) using dry jet-wet spinning.  Lyocell fiber is eco-friendly since products made from it can be recycled and lyocell is biodegradable because it is a cellulosic fiber. Lyocell shares many properties with other cellulosic fibers such as cotton, linen, ramie and viscose rayon. Some main characteristics of lyocell fibers are that they are soft, absorbent, very strong when wet or dry, and resistant to wrinkles. Lyocell fabric can be machine washed or dry cleaned, it drapes well, and it can be dyed many colors, and can simulate a variety of textures such as suede, leather, and silk.
[噴絲頭類型 Spinneret Type]

濕紡噴絲板類型 Spinnerets Type

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<h3>濕紡噴絲頭</h3>濕法紡絲是將溶液法制得的紡絲熔液從噴絲頭的細孔中壓出呈細流狀，然后在凝固液中固化成絲。由于絲條凝固慢，所以濕法紡絲的紡絲速度較低，一般為50～100m/min，而噴絲板的孔數較熔體紡絲多，一般達4000～2000孔。濕法紡絲的特點是工藝流程復雜，投資大、紡絲速度低，生產成本較高。一般在短纖維生產時，通常，不能用熔體法紡絲的成纖高聚物，才用濕法紡絲和生產短纖維和長絲束。腈綸、維綸、氯綸和粘膠多采用濕法紡絲。  Spinnerets for Wet SpinningProcess of wet spinning is used for polymers that need to be dissolved in a solvent to be spun. The spinneret is submerged in a chemical bath that causes the fiber to precipitate, and then solidify, as it emerges. The process gets its name from this "wet" bath. Acrylic, rayon, aramid, modacrylic, and spandex are produced via this process.[A variant of wet spinning is dry jet-wet spinning, where the solution is extruded into air and drawn, and then submerged into a liquid bath. This method is used in Lyocell spinning of dissolved cellulose.

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