A type of spinning method for chemical fibers. The raw polymer compound is heated and melted, extruded from a spinneret (nozzle) into air or water at a constant speed, and cooled and solidified into fibers to produce fibers. Since no solvent or coagulation liquid is used, high-speed spinning is possible, but the melt is susceptible to oxidation and thermal decomposition, and its fluidity is sensitive to temperature, so consideration must be given to shortening the time in the molten state and accurate temperature control. There are the following spinning methods depending on the raw material. (1) Melt lattice spinning method Used for polyamide, polyester, etc. (2) Screw extrusion spinning method Widely used for nylon, polyester, vinylidene chloride copolymer, polyolefin, etc. (3) Continuous polymerization spinning method Used to produce 6-nylon fiber. Melt spinning is an extremely efficient spinning method used to produce fibers such as polyamide, polyester, vinylidene chloride, polyolefin, glass, and rock. Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information |
化学繊維の主要な紡糸法の一形式。原料の高分子化合物を加熱融解し,紡糸口金 (ノズル) から一定速度で空気や水の中に押出し,繊維状に冷却固化させて繊維を製造する方法。溶媒,凝固液を使用しないため高速度の紡糸が可能であるが,溶融液は酸化,熱分解を受けやすく,流動性が温度によって鋭敏に左右されるので,融解状態の時間短縮,正確な温度制御などの考慮が必要である。原料に応じて次のような紡糸法がある。 (1) 溶融格子紡糸法 ポリアミド,ポリエステルなどに使用。 (2) スクリュー押出し紡糸法 ナイロン,ポリエステル,塩化ビニリデン共重合物,ポリオレフィンなどに広く用いられている。 (3) 連続重合紡糸法 6-ナイロン繊維の製造に使用。溶融紡糸法は,ポリアミド,ポリエステル,塩化ビニリデン,ポリオレフィン,ガラス,岩石などの各繊維の製造に利用される,きわめて能率的な紡糸法。
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