TW419543B - Methods of manufacture of nonwoven fabric and nonwoven fabrics manufactured thereby - Google Patents

Methods of manufacture of nonwoven fabric and nonwoven fabrics manufactured thereby Download PDF

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Publication number
TW419543B
TW419543B TW088108594A TW88108594A TW419543B TW 419543 B TW419543 B TW 419543B TW 088108594 A TW088108594 A TW 088108594A TW 88108594 A TW88108594 A TW 88108594A TW 419543 B TW419543 B TW 419543B
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cellulose
patent application
scope
fabric
item
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TW088108594A
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English (en)
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Stephen John Law
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Courtaulds Fibres Holdings Ltd
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    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/425Cellulose series
    • D04H1/4258Regenerated cellulose series
    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01DMECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00Formation of filaments, threads, or the like
    • D01D5/06Wet spinning methods
    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01FCHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F2/00Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01FCHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F2/00Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
    • D01F2/02Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from solutions of cellulose in acids, bases or salts
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/425Cellulose series
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/54Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
    • D04H1/56Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving in association with fibre formation, e.g. immediately following extrusion of staple fibres
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/013Regenerated cellulose series
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/015Natural yarns or filaments
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/02Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments
    • D04H3/03Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of forming fleeces or layers, e.g. reorientation of yarns or filaments at random
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/14Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic yarns or filaments produced by welding
    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H3/00Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
    • D04H3/08Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
    • D04H3/16Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic filaments produced in association with filament formation, e.g. immediately following extrusion

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Artificial Filaments (AREA)
  • Woven Fabrics (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

Description

4 195 4 3___b7_____ 五、發明说明(Μ 本發明係有關一種從纖維素(尤其是從一纖維素的溶 液)製成一不織布的製造方法。 纖維素纖維和單織可以藉著將一纖錐素的溶液在一氧 化胺溶劑中伸拉,其再經淋瀝到清水中或一水性氧化胺的 稀釋溶液中,以製成纖維素單織,其可再鯉切斷成短纖。 這個擠壓和凝結的過程被稱作是〃溶劑伸拉〃,而逭樣所 製成的溶劑伸拉的缘維素一般泛稱aYOCELL" ^ 吾人知道,藉著將短纖打散是有可能生產一些低於 1 ·0 dtex的低纖度纖維的。但是,逭麼做是很費錢的, 而且f要耗掉大量的能源。 本案申請人所申請的全球專利FCT/GB97/〇3391揭示 了一種從纖維製造一不織纖維素纖維的方法,該纖維乃是 藉著將一纖維素溶液擠壓通經至少一擠壓頭,並且將擠壓 物纖維通經一高速的氣液而形成的,該等纖維在一平面上 經收集’而纖維在該平面上再經凝結。該等纖維在凝結之 前會.粘結在一起而形成一相當稠密的不織纖維。 在有些用途上,過度粘結一起,高密度的纖維網是不 經濟部中央標準局员工消費合作社印製 合宜的’皋個例説,用作過濾材料或用作具有高度持水能 力的材料時。 本發明提供了一種製造一具有高膨鬆度以及相當低密 度的不織纖維素布料的方法。 根據本發明提供了一種製造一不織纖維素布料的方法 ’在該方法中,來自一吐絲頭所i產的擠壓的纖維通經一 高速氣流’該纖維再通經一_汽落,該蒸汽霧在該纖維以 本紙張尺錢财(2l0x297^) 419543 A7 __ ___B7 五、發明説明(> ) 織維網形式收集之前,先行至少部份地凝結該歎維。 該經擠壓出的蠍維經由該氣流且可經斷裂成不定的長 度。 該蒸汽霧可由任何適合的凝結劑構成。該蒸汽霧最好 是一水性霧*而(比方説)低濃度的烷基酵頬也可使用β 最好,霧化的水可從設在該吐絲頭下方的一噴嘴噴灑出來 Ο 該織維素溶液最好為纖維素在一氧化胺溶劑中的溶液 ,該氧化胺溶劑常用的是一叔胺Ν-氧化物,而尤為合用的 是Ν-甲基氧氮雜環己烷Ν-氧化物(ΝΜΜΟ)。該纖維素溶液 可含有重量比4%〜22¾ (最好是10〜15%)的纖維素,其聚 合化程度為200〜5»000,更常見的是400〜1,000。 在本發明一較佳的實施例中,該纖維素溶液含有重量 比14%的纖維棄,重量比12%的水以及重量比74%的ΝΜΜ0 ,該纖維素的聚合化程度為大約6〇〇。 經濟部中央橾準局負工消费合作社印装 該經拉細的生成纖維的微纖維或細纖維經收取,並且 再用水或氧化胺稀釋的水溶液(含有達2〇2的氧化胺在水 中)加以凝.結(或者稱'、再生")。該等細纖維或可直接 地經收取到一凝結池裡,或者,可經收取到一表面上,然 後再進行凝結β 該氣流最奸是空氣或是乾蒸汽,經以每秒2〇〇公尺( 200 m . s—1)到每秒5〇〇公尺(500 m · s_1)的速度,以 及l〇〇°C,ISyC之間的溫度(就14¾〜1S*的織維素濃度來 説)吹送到該經濟歷的纖維上。伸拉原液中纖維素含量愈 本紙張纽逋用中國2丨ox297公釐Ϊ 一 5 一 4 195 43 A7 B7 五、發明説明($ ) ’可使用觀的空缝度。魏醜速應該是從吐絲頭擠 壓出纖維的縣速朗至知倍,最好是前述擠麗速度 的I’ooo肖到2〇鳥倍之間。該氣流係與該擠壓纖維的縱 向軸成15。到45。之間的斜角(更好的是成大約3〇。的斜 角)經導到該擠壓纖維上。該等噴射氣流亦可相對於該吐 絲頭呈角偏斜,賴嘴職流祕與魏維軸線 不交叉,該等嘴射氣流係相對於該擠壓纖維的表面呈切線 該纖維收集表雨可為柔軟的,或有彈性的β最好,該 纖維收取時是收取到-泡綿床上,該泡綿最好經浸泡到清 水或水性ΝΜΜΟ溶液裡。 另外,本發明亦提供了 一不織LY〇CELL .布料,在該 布料中,纖維在不經使用粘著劑情況下即接著在一起或糾 纏在一起’該布料的密度不超過175 g . dm -3 延伸到破裂點的拉張強度至少7¾ 〇
I 背 項 及/或其 經濟部中央揉準局貝工消费合作社印製 圖式簡述: 茲以實施例方式,參照後附圖説,對本發明作—詳 説明,在圖説中: 圖1為用以生產依照本發明的一不織布料的裝 實施例示意圖; ’ ^ 圖2為使用在圖1的裝備中一吐絲頭噴嘴的一平視圖 圖3為圖2中所示的噴嘴的一侧视圖;其内部通道在 圖上以魔線表示;以及 3 本紙張尺度適用中國國家標率(CNS ) M说格(210 X 297公釐) 二 A7 B7 4 ^5 43 五、發明説明(4 ) 圖4通過圖2和圖3中所示的噴嘴的一轴向橫斯面 圖式中主要元件説明 10:擠壓機 U :噴嘴 12:噴嘴的背面 13:螺栓 丄4:中央通道 15:嘖孔(吐絲頭) 16:出口通道 環形溝槽 21:流量控制閥 22:流量錶 23:加熱器 24:溫度感测器 25:空氣流 2S:撐持表面 27:凝結池 滾筒 30:水蒸汽霧 32:空氣霧化嘖嘴 本案詳細説明: 面 之 注 再 頁 經濟部中央搮準局負工消费合作社印«. 參照圖1,示出了一擠壓機10,有一噴1:1接搭其上。 將一含有重量比I4%的纖維素、重量比12$的水以及重量比 74%的N-甲基氧氮雜環己烷N_氧化物的溶液饋送 到擠壓機。該纖維素的平均聚合化程度為大的6〇〇。 該纖維素溶液或可如全球專利㈣价咖中所述的 方法製成’雜職㈣錢轉桃t:到110 t 之間(最好是105。〇的溫度,並且以纖維素伸拉職的 一速續的單織形式被迫通經該噴嘴。 噴嘴U在圖2和圖3中有示,其可以直接地經固定到拼 歷機u>上H寵定娶卜轉_ (g未示),而該轉接 頭再經固定._壓_。㈣_其背面12 中 攻螺紋的馳13,而-中央通道14,其收尾在―嗔似工 〇該吐絲糊隸机2 mm脈3咖之間,最好是大約 本紙張尺度遙用中國國家棣率(CNS ) A4规格(210x297公着) 一 7- 4 195 4¾ ° Α7 Β7 五、發明説明(念) 0*27 mm 。 該織維素原液經加壓迫入到通道14裡,並經濟壓通經 吐絲頭1S。噴嘴11另有數個氣體出口通道^ (最好是三個 ),在該中夹通道U.周圍間隔開來。通道π的每一個均相 對於該吐絲頭軸呈傾斜,且該等通道在吐絲頭^周圍在圓 周上以等距離間隔,致使從其各個通道1S逸出的每一道氣 流對於該經擠壓的單織均有著相同的效應。 氣流通遒1S與噴嘴的縱向軸成一〗5。到45。之間(最 好是3〇。)的斜角或收朿角。通道ie也經歪斜使得通道ls 的軸的本身並不收朿。該等氣流通道的直徑大約。 噴嘴的背面裡有一環形溝槽1?,其與三個通道1S的末端 呈交聯關係。 當噴嘴經固定到擠壓機時,中央通道14經聯接到纖維 素紡絲原液供料管,而該環形通道17經聯接到一供氣管( 最奸是供應壓縮空氣)。 經濟部中央搮準局貝工消費合作社印製 (*·仏Η讀背面之Λίί.意事項 參照圖〗.,壓縮空氣經從一供氣源(圖未示)通經一 流量控制閥21、一流量錶22、一加熱器23以及一溢度感測 器24,送到該噴嘴裡的空氣通道1? ^溫度感測器24可經連 接到空氣加熱器23以供控制空氣溫度。 從噴嘴u擠壓出的單纖經從出口通道16噴出的高流過 空氣流25拉細拉長,該單纖經收取並且可經斷裂以及直接 地經吹到一凝結池27裡,或(最奸是〉經吹到一設在離噴 嘴11約3〇公分處的撐持表面部上。該織維素紡絲原液流率 最好大約0‘2 g .mirfl ^在圖示的實施例中,該撐持表面 本紙張从適用中國國家梯準(CMS ) A4規格(210><297公簾) —— l95<$
4 a = 月説明(77 、^是由一可轉動的滾筒28的外周表面所構成的,該滚筒 以大約每分鐘1〇圈(1〇 rpm)的轉速轉動,以在滾筒上堆 積''層不織布。 該等擠壓出的單纖通經一細微的水蒸汽霧3〇,該水蒸 汽藜乃是藉由設在噴嘴底下大約10公分處的一空氣霧化 嘴嘴㈣㈣水職㈣。 滾筒的表面可經覆蓋柔軟的材料,比方説,一層泡綿 ,最好是一層2 mm厚度的聚氨酯泡綿,其平均孔洞尺寸在 以m (微米)^該泡綿可經浸泡在水中或服!^〇水溶液中 Ο 繼被不織布料層在滚筒沈上生成之後,滚筒沈經浸入 到一盛有一合適的凝結劑(比方説,水或氧化胺在水中的 溶液)的凝結池27中,以便將不織纖維素布料凝結在該滚 筒上。該布料層再在洗滌除去溶劑之後,經乾燥到滾筒上
Q 下表1總結地示出了用在擠壓的單纖生成步驟中不同 的絛件。 之 注
I 頁 經济部中央揉準局貝工消费合作社印製 表1 樣永我號 收取的方法 空氣溫度 (°C) 1 以乾纖維形式收集 U5— 2 ί溼的表面工收集 148~ 3 (同上)+水汽 147 4 i同上)+柔順的表面 145 6紙張尺度適用中國國家搮率(CNS ) A4規格(210X297公釐) 一 Ί-
A7 B7 五、發明説明(7 ) 空氣流率若每秒2*4公升(2·41· S"1)來説,相當於 大約每秒250公尺(250 m · s_1)的空氣流速〇 實施例3和4係依照本發明的方法製成。 下表2總結地示出了以厚度量測所得(使用一 Mitutoyo 轉盤式厚度量規進行量測,配上薄膜/纖維網量測板)方 式的纖維網的膨鬆度◊由於基準重量不同,厚度經以 2*5 g . αΓ2的基準重量進行標準化。 表2 樣本代號 基準重量 (s * m'2) 纖維網厚度 (㈣) 鐘標準化的厚 (Mm/2Sg . 密度 (g * dm-3) 1 25.3 113 1Ϊ2™~ 223 2 ...... 28.3 145 128 195 3 28.0 168 --— 150 166 4 22.5 163 ^Tgr~~ 138 ________ 我們可以看出來,依照本發明的實施例生產出較不密 實的纖維,逭些纖維的密度不超過170 s . drT3。 參照實施例4 ’吾人相信,該泡沫有兩個作用,即( a)初生的纖維打到一硬的收集裝置的表面容易因衡擊而 融合〜而一柔順的表面會除去一部份的衡擊能量並且降低 粘結;以及(b)泡沫受到衡擊而壓縮時,含在它的孔洞 本紙張尺度適用f國困家揉準(CNS ) Μ規格(210X297公釐) /〇 {讀背面之·注意事項再 頁) 經濟部中央橾準局負工消費合作社印裝 A7 4195 43 — B 7______ 五、發明説明(8) 裡的凝結劑經擠壓到表面,並且幫助快速再生β (請先Μ讀背面之注f項再本頁) 在進行評估機械特性時,從該纖錐網切下纖維條,宽 度5 mm,並且在一Test〇metric pcx材料拉張強度測試儀 上,以一20 mm的量規長度,並且以每分鐘2〇甽的十字頭 速度造行測試。和絕對拉張強度一起,各個拉張強度也經 標準化後根據25 的纖維網的基準重量示出,這樣 更能夠反映出比較性的機械特性,因為基準重量的差異是 消除了。 表3總結地示出了在滚筒26上生成的纖維網的特性。 表3 樣本代號 拉張強度 (N)經標準化 至. m 2 展延至轔裂 點的伸展度 (mm) 評語〜—— 1 3.7 0.7 ^淨的斷裂處 —— 2 0.2 0.85 尚稱乾淨的斷裂處^- 3 0.41 1.54 在Λ斷裂"之後,樣本访^ 4 0.09 2.5 在、、斷裂〃之後,樣本 經濟部中央揉隼局員工消费合作社印装 就實施例2、3和4來説,由於滾筒的表面是部份地 浸在凝結池中,因此,滾筒表面是溼的,在接觸到該溼的 滾筒或原先放置的纖維就會進一步凝結。 就實施例1來説,滚简的表面是乾的,而該織維在收 集到滾筒上之後乃經再生。 ^紙張又度逋用中國國家棣準(CNS ) A4*t格(210X297公釐)
II 4 195 4 3 A7 — _ - - II ' ^―———P^· 五、發明説明(q) 就實施例3和4來説,纖維在通經該蒸汽揉之後,經 收集到滚筒上,很明顯地具有較低的拉張強度,但延展到 斷裂點的延展性較強,而同時又能在到達斷裂點之後仍維 持一些強庹。這些高伸縮性的材料適合用作過滅器和高吸 水性的材料。 鮮本發_敘述成觀進行含有U%賴維素的纖 維素緒絲原液的伸拉,本發明的方法可經應用到如 PCTAw/o339!專鄕情频其他麟原液,該專利案 的内容經_考力摘Ail本轉雜。 經濟部中央標準局貝工消费合作社印製 準 橾 家 ¥ |國 中 I釐 公 97 2 -12 -

Claims (1)

  1. 經濟部中央標车局貞工消費合作社印製 3種製造不織布的方法,其係使用織維素而製造 所製成之不織布係纖維素的不織布,該等纖維乃是 藉著將素雜賴龍至少—贿頭並 該辦壓物纖維通經-高速氣流,該織維通經—蒸 霧,該蒸汽霧在該纖維成為纖維網狀經收集之前, 至少部份地將該纖維凝結。 根據申諸專利範圍第!項的方法,在該方法中 維素溶液係一在一氧化胺溶劑中的溶液,而該蒸 係一水性霧。 ,務 根據申請專利範圍第1項的方法,在該方法中 流的流速至少每秒200公尺。 風 根據申請專利範圍第3項的方法,在該方法中 流的流速比起經擠壓物的流速快至少五十倍。 根據申請專利範圍第1項的方法,在該方法中 流的氣體溫度至少在1〇〇°C。 根據申請專利範園第1的方法,在該方法中,软⑽ 露是經由-嘴霧嘴生成的,該喷霧錄在該吐絲頭的 下方且與吐絲頭有間隔。 ’ 根據申請專利範圍第1項的方法,在該方法中,該纖 維素溶液含有重量比4〜22%的纖維素,最好是含有重 量比大約10%到15¾的纖維素。 根據申請專利範圍第1項的方法,在該方法中,該纖 維素的平均聚合化程度大約S00。 根據申請專利範圍第1項的方法,在該方法中,前述 2 3 5 6 7 8 9 本紙張尺度適用中國®家橾芈(CNS > A4規格(210X297公簸) 該氣 該氣 該蒸汽 申請專利範固 了壓縮的空氣,其經以相 的軸線呈-大約30。的偏角導到 壓物織離 1〇.根據申請專利範圍第】項的方 二 :維網係經收集到一乾表面上,=著^ 經以凝結触[ 卿著再 U ·根據申請專利_第】項的方法,在該方 纖維網經收集到-經以凝結劑沾溼的表面上' 12.根據申請專利範圍第】項的方法,在該方法中,鼓 纖維網經收集到-柔順的表面上。 根據暢專利範圍第_的方法,在該方法中 ^順的表面係藉由—厚度大約2咖的泡珠層所提供 】4 一_㈣請專職圍们彻第13項中任 方法所製成的不織布。 、 1 5 ·-種不織的纖維素布料網,在該布料網裡的纖維毋 需使用-袖劑而可胳結在一起,該布料網的密度低 於175 g · dm~3。 1 6 .根據申請專利範圍第w項的不織布,該布料展延至 斷裂的伸展度至少7¾。^ 7 種不織的纖維素布料網,在該布料網裡的纖維毋 需使用劑而可#結在—起,該布料展延 至斷裂的伸展度至少7% 〇 ^ 本紙法尺度逋用中困國家榡半(CNS ) A4规格< 210X297公羡)
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