TW201422866A - Nonwovens comprising hydrophobic cellulosic man-made fibres - Google Patents

Nonwovens comprising hydrophobic cellulosic man-made fibres Download PDF

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TW201422866A
TW201422866A TW102127617A TW102127617A TW201422866A TW 201422866 A TW201422866 A TW 201422866A TW 102127617 A TW102127617 A TW 102127617A TW 102127617 A TW102127617 A TW 102127617A TW 201422866 A TW201422866 A TW 201422866A
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fiber
woven fabric
fibers
weight
liquid
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TW102127617A
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Bianca Schachtner
Stefan Kriechbaum
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Chemiefaser Lenzing Ag
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING 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
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/04—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres having existing or potential cohesive properties, e.g. natural fibres, prestretched or fibrillated artificial fibres
    • D04H1/28—Regenerated cellulose series
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING 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
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-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
    • D04H1/42—Non-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
    • D04H1/425—Cellulose series
    • D04H1/4258—Regenerated cellulose series
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING 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
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-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
    • D04H1/44—Non-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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling
    • D04H1/46—Non-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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
    • D04H1/492—Non-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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres by fluid jet
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING 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
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/70—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres
    • D04H1/74—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres characterised by the method of forming fleeces or layers, e.g. reorientation of fibres the fibres being orientated, e.g. in parallel (anisotropic fleeces)
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
    • D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
    • D06M13/12—Aldehydes; Ketones
    • D06M13/13—Unsaturated aldehydes, e.g. acrolein; Unsaturated ketones; Ketenes ; Diketenes
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
    • D06M2101/02—Natural fibres, other than mineral fibres
    • D06M2101/04—Vegetal fibres
    • D06M2101/06—Vegetal fibres cellulosic

Abstract

The invention concerns anonwoven comprising a blend of two fibre types, whereas the first fibre type is a cellulosic fibre and the second fibre type is a biodegradable hydrophobic cellulosic and is characterised in that the absorbency for a liquid is at least 5 % higher compared to a nonwoven with the highest absorbency for this liquid comprising only one of the said fibre types.

Description

包含疏水性纖維素人造纖維的不織布 Non-woven fabric containing hydrophobic cellulose rayon

本發明關於來自疏水性纖維素纖維和纖維素纖維的摻混物之不織物。 The present invention relates to nonwovens from blends of hydrophobic cellulosic fibers and cellulosic fibers.

纖維素人造纖維像是黏膠絲(viscose)纖維和萊塞爾(lyocell)纖維最為人所知的是其吸水表現並被用在需要親水性的情形。相反地合成纖維例如聚酯、聚乙烯及聚丙烯本質上係疏水性，意指其不會將水吸入其內部結構中。 Cellulose rayon fibers, such as viscose fibers and lyocell fibers, are best known for their water absorption properties and are used in situations where hydrophilicity is desired. Conversely synthetic fibers such as polyester, polyethylene and polypropylene are inherently hydrophobic, meaning that they do not draw water into their internal structure.

此技藝的現況是黏膠絲纖維和萊塞爾纖維係疏水性並具有大約85至90mN/m的表面張力，其取決於應用的柔軟劑(soft finish)類型。在不織布應用中使用的聚酯纖維在40至45mN/m的範圍中。 The current state of the art is that the viscose and lyocell fibers are hydrophobic and have a surface tension of from about 85 to 90 mN/m, depending on the type of soft finish applied. The polyester fibers used in nonwoven applications are in the range of 40 to 45 mN/m.

該黏膠絲型和莫代爾(modal)型纖維素纖維係依據黏膠絲程序製造。這樣的纖維已經由BISFA(國際人造纖維標準局)給予屬名黏膠絲和莫代爾。 The viscose and modal cellulose fibers are manufactured according to a viscose thread procedure. Such fibers have been given to the generic viscose and modal by BISFA (International Manmade Fiber Standards Agency).

近幾年“胺-氧化物-程序”或“萊塞爾程序”已經確定為該黏膠絲程序的替代方案，其中纖維素，沒形成衍生物， 係溶於胺-氧化物，特別是N-甲基嗎啉-N-氧化物(NMMO)的有機溶劑。由此溶液製造的纖維素纖維叫做“溶紡(solvent-spun)”纖維且已經由BISFA(國際人造纖維標準局)給予屬名萊塞爾，並可以商品名TENCEL®自Lenzing AG購得。 In recent years, the "amine-oxide-program" or "Lesser program" has been identified as an alternative to the viscose process, in which cellulose, no derivatives, An organic solvent soluble in an amine-oxide, particularly N-methylmorpholine-N-oxide (NMMO). The cellulose fibers produced from this solution are referred to as "solvent-spun" fibers and have been given by the BISFA (International Manmade Fiber Standards Agency) under the generic name of Lesser, and are commercially available from Lenzing AG under the trade name TENCEL®.

其他人造纖維素纖維能使用化學程序(例如亞銅銨(cuproammonium)法)或使其他直接溶劑例如離子性液體製造。 Other man-made cellulosic fibers can be made using chemical procedures such as the cuproammonium process or other direct solvents such as ionic liquids.

關於衛生應用的濕式拭巾像是廁所清潔巾、卸妝棉、化妝用拭巾、嬰兒用拭巾及衛生用紙係由濡濕洗劑的不織布製造。洗劑係預期用於皮膚的含水或含水/醇之低-至中等-黏度調配劑或含水/醇之懸浮或乳化物質。關於居家或工業應用的拭巾也使用廣大範圍的液體改善其效率。 Wet wipes for sanitary applications such as toilet wipes, make-up removers, cosmetic wipes, baby wipes, and sanitary paper are made from a non-woven fabric of wet wipes. Lotions are aqueous or aqueous/alcoholic low-to-medium-viscosity formulations or aqueous/alcoholic suspension or emulsifying materials intended for use on the skin. Wipes for home or industrial applications also use a wide range of liquids to improve their efficiency.

關於不織布應用，合成纖維例如聚酯由於其於不織布和紡織應用中增進體積、不透明及柔軟度而廣為使用。 Regarding nonwoven applications, synthetic fibers such as polyester are widely used for their increased bulk, opacity and softness in non-woven and textile applications.

此技藝的現況是能增進拭巾、衛生應用或工業應用的產品效能之介於人造纖維素纖維和聚酯纖維之間的摻混物。100%纖維素材料製造的織物幾乎沒有疏水性/非極性效應。 The current state of the art is a blend of man-made cellulosic fibers and polyester fibers that enhances the performance of products for wipes, sanitary applications or industrial applications. Fabrics made from 100% cellulosic material have almost no hydrophobic/non-polar effects.

由於生態學的原因，所以需要由可再生原料製造且也是生物可降解性並對液體像是洗劑具有良好吸收性的不織布。 For ecological reasons, there is a need for non-woven fabrics that are made from renewable raw materials and that are also biodegradable and have good absorbency for liquids like lotions.

親水性纖維素纖維像是標準萊塞爾纖維係在8.5至9克水/克不織布的範圍中，而疏水性纖維像是聚酯或疏水 性萊塞爾纖維顯示只有少許至沒有吸收性(0至1.0g/g)。 Hydrophilic cellulose fibers are like standard lyocell fibers in the range of 8.5 to 9 grams of water per gram of non-woven fabric, while hydrophobic fibers are like polyester or hydrophobic. The lyocell fiber showed only a little to no absorbency (0 to 1.0 g/g).

任何親水性纖維素纖維與疏水性纖維的摻混物預期將會遵循線性函數在介於這些值之間的範圍中。 Any blend of hydrophilic cellulosic fibers and hydrophobic fibers is expected to follow a linear function in the range between these values.

頃發現包含疏水性纖維素纖維與標準纖維素纖維的摻混物之不織布具有比包含僅一種標準纖維素纖維或疏水性纖維的不織布高的液體吸收率。 It has been found that a nonwoven comprising a blend of hydrophobic cellulosic fibers and standard cellulosic fibers has a higher liquid absorption rate than a nonwoven fabric comprising only one standard cellulosic fiber or hydrophobic fiber.

此發明性不織布包含兩種纖維類型的摻合物，然而第一種纖維類型係纖維素纖維，且第二種纖維類型係生物可降解的疏水性纖維素纖維，且該不織布的特徵為比包含僅一種前述纖維類型者的不織布對一液體具有的最高吸收率高至少5%之同一液體的吸收率。端視該摻混物，該吸收率可能提高至多15%或更大。 The inventive nonwoven comprises a blend of two fiber types, however the first fiber type is cellulose fiber and the second fiber type is biodegradable hydrophobic cellulose fiber, and the non-woven fabric is characterized by inclusion The nonwoven fabric of only one of the foregoing fiber types has an absorption rate of the same liquid having a maximum absorption rate of at least 5% for a liquid. Looking at the blend, the absorbance may increase by up to 15% or more.

液體係，例如，洗劑(這通常含有水；甘醇類像是丙二醇；有機酸類像是苯甲酸、二羥基醋酸、檸檬酸；有機酸鹽類像是檸檬酸鈉；乳化劑像是聚山梨醇酯20及其他成分)，其他液體係油類。 Liquid system, for example, lotion (this usually contains water; glycols like propylene glycol; organic acids like benzoic acid, dihydroxyacetic acid, citric acid; organic acid salts like sodium citrate; emulsifiers like polysorbate Alcohol ester 20 and other ingredients), other liquid system oils.

頃亦發現該吸收率的提高也依賴該液體的表面張力。 It has also been found that this increase in absorbance also depends on the surface tension of the liquid.

關於具有高於50mN/m的表面張力之液體，像是水，該摻混物包含5至40重量%的第二種纖維類型之纖維(疏水性纖維)及95至60重量%的第一種纖維類型之纖維(親水性纖維)，較佳5至30重量%的第二種纖維 類型及95至70重量%的第一種纖維類型，總共100%。 Regarding a liquid having a surface tension higher than 50 mN/m, such as water, the blend contains 5 to 40% by weight of fibers of the second fiber type (hydrophobic fiber) and 95 to 60% by weight of the first type Fiber type fiber (hydrophilic fiber), preferably 5 to 30% by weight of the second fiber Type and 95 to 70% by weight of the first fiber type, a total of 100%.

關於具有低於50mN/m的表面張力之液體，像是醇類，該摻混物包含40至95重量%的第二種纖維類型之纖維(疏水性纖維)及60至5重量%的第一種纖維類型之纖維(親水性纖維)，較佳30至95重量%的第二種纖維類型及70至5重量%的第一種纖維類型，總共100%。 Regarding a liquid having a surface tension of less than 50 mN/m, such as an alcohol, the blend contains 40 to 95% by weight of fibers of the second fiber type (hydrophobic fiber) and 60 to 5% by weight of the first The fiber type fiber (hydrophilic fiber) is preferably 30 to 95% by weight of the second fiber type and 70 to 5% by weight of the first fiber type, in total 100%.

該第一種和第二種纖維類型均為人造纖維素纖維，通常選自由黏膠絲纖維、萊塞爾纖維或莫代爾纖維所組成的群組。該第一種和第二種纖維類型也可能是天然纖維素纖維，像是棉花。 The first and second fiber types are man-made cellulosic fibers, typically selected from the group consisting of viscose fibers, lyocell fibers, or modal fibers. The first and second fiber types may also be natural cellulose fibers, such as cotton.

疏水性纖維素纖維的製法在Lenzing AG之尚未公開的申請案AT-A 1658/2011中有描述。 The preparation of hydrophobic cellulose fibers is described in the unpublished application AT-A 1658/2011 to Lenzing AG.

疏水劑，例如烷基烯酮二聚體調合物(AKD調合物)可在市場上購得(例如由Kemira販售的Hydrores©化合物)。最常見的是具有大約5至25%的活性化合物之調合物。在此例子的案例中該調合物係具有大約20至22%的活性化合物之酸性乳化物。 Hydrophobic agents, such as alkyl ketene dimer blends (AKD blends), are commercially available (e.g., Hydrores© compounds sold by Kemira). The most common are blends having from about 5 to 25% of the active compound. In the case of this example the blend has about 20 to 22% acidic emulsion of the active compound.

該等疏水性纖維含有以纖維素的重量為基準計為0.01至1%，較佳0.05至0.2%的疏水劑。較佳疏水劑係烷基烯酮二聚體。 The hydrophobic fibers contain from 0.01 to 1%, preferably from 0.05 to 0.2%, of a hydrophobic agent based on the weight of the cellulose. Preferred hydrophobic agents are alkyl ketene dimers.

第1圖顯示不同混紡織物的表面張力計算值。 Figure 1 shows the calculated surface tension of different blended fabrics.

第2圖顯示30%疏水性Tencel 1.7 dtex/38mm毛面 與70%黏膠絲1.7 dtex/40mm毛面的摻混物之液體保持及釋放行為。 Figure 2 shows 30% hydrophobic Tencel 1.7 dtex/38mm matte Liquid retention and release behavior with a blend of 70% viscose 1.7 dtex/40 mm matte.

第3圖顯示70% Trevira PES 1.7/38毛面與30% Tencel標準1.7/38毛面的摻混物之液體保持及釋放行為。 Figure 3 shows the liquid retention and release behavior of a blend of 70% Trevira PES 1.7/38 matte finish and 30% Tencel standard 1.7/38 matte finish.

實施例中所用的疏水性纖維素纖維之製法： The method for preparing the hydrophobic cellulose fibers used in the examples:

1000g從未乾燥的萊塞爾纖維(1.7 dtex/38mm)在添加柔軟劑之前從該萊塞爾生產線濕濕的取出並壓榨到大約50%的含水量。這些纖維在大約60℃的15l之含有41g烷基烯酮二聚體(13g/l且帶有21%活性物質)溶液(例如商業上可自Kemira OYI購得的Hydrores®)的水溶液中處理5分鐘並乾燥到大約10%的含水量。 1000 g of un-dried lyocell fiber (1.7 dtex/38 mm) was wetted from the production line and pressed to a moisture content of about 50% prior to the addition of the softener. These fibers are treated in an aqueous solution containing 41 g of a solution of 41 g of alkyl ketene dimer (13 g/l with 21% active), such as Hydrores® commercially available from Kemira OYI, at 15 ° C. Minutes and dry to about 10% water content.

這些纖維具有大約55至75%的保水率值，最常在60至65%的範圍，那比Standard Tencel 1.7/38 Fibers(85至90%)低大約20%。 These fibers have a water retention value of about 55 to 75%, most often in the range of 60 to 65%, which is about 20% lower than Standard Tencel 1.7/38 Fibers (85 to 90%).

這些纖維係用以製造大約60g/m2射流噴網樣品(spun laced sample)，其摻混市售可得的Tencel 1.7/38mm亮不織布纖維還有市售可得的Lenzing NW 1.7 dtex/40mm亮黏膠絲纖維。 These fibers are used to make approximately 60 g/m 2 spun laced sample blended with commercially available Tencel 1.7/38 mm bright non-woven fabrics and commercially available Lenzing NW 1.7 dtex/40 mm bright Viscose fiber.

不織布製法 Non-woven method

該等樣品係由下列通用步驟製造纖維開鬆(Fibre Opening)及摻混， 梳理，水力纏絡，脫水，通過空氣乾燥，及捲繞。 These samples were manufactured by the following general procedures for Fibre Opening and blending. Carding, hydraulic entanglement, dehydration, drying by air, and winding.

生產線速度係在55至100m/min的範圍並在該水力纏絡單元滾筒上使用總共4個注水器。經調節的水壓係在30至80bar的範圍中。注水器中的噴射捲板(jet strip)係可用於此重量範圍中的標準水力纏絡產物之普通噴射捲板。 The line speed was in the range of 55 to 100 m/min and a total of 4 water injectors were used on the hydroentangled unit cylinder. The adjusted water pressure is in the range of 30 to 80 bar. The jet strip in the water injector is a conventional jet coil that can be used for standard hydraulic wrap products in this weight range.

該不織布也可藉由包括乾式佈層、濕式佈層或氣流成網(airlaying)的其他不織布程序形成。 The nonwoven fabric can also be formed by other non-woven processes including a dry cloth layer, a wet cloth layer, or airlaying.

該不織布可使用包括水力纏絡法、針孔法或化學結合法任何習用不織布結合程序結合。 The nonwoven fabric can be combined using any conventional non-woven fabric combining procedure including hydroentanglement, pinhole or chemical bonding.

該不織布可具有10至2000g/cm2的基重。關於拭巾較佳係基重為25至200g/m2的不織布。關於工業應用例如吸油墊，適當的是達於2000g/m2的基重。 The nonwoven fabric may have a basis weight of 10 to 2000 g/cm 2 . The wipe is preferably a non-woven fabric having a basis weight of 25 to 200 g/m 2 . With regard to industrial applications such as oil absorbing pads, a basis weight of up to 2000 g/m 2 is suitably used.

重力吸水時間(GAT)係依據WSP 242.3[或類似於IST 242(02)的ERT 442.2]測量。這顯示不織布在指定時間內吸收多少水。 Gravity water absorption time (GAT) is measured in accordance with WSP 242.3 [or ERT 442.2 similar to IST 242 (02)]. This shows how much water is absorbed by the non-woven fabric during the specified time.

表1顯示藉由前述程序利用疏水性萊塞爾纖維和標準萊塞爾纖維的不同纖維摻合物製造之不織布的吸水率(GATS值)。該等萊塞爾纖維係由Lenzing AG製造商品名為Tencel的萊塞爾纖維。 Table 1 shows the water absorption (GATS value) of a nonwoven fabric made by using different fiber blends of hydrophobic lyocell fibers and standard lyocell fibers by the aforementioned procedure. These lyocell fibers are manufactured by Lenzing AG under the trade name Tencel.

較低摻混量(5至10%疏水性Tencel)導致吸水率提高5%，較高摻混量(20至30%)導致高出15%的吸水率，而高於40%的疏水性纖維量導致撥水性及低吸水率。 A lower blending amount (5 to 10% hydrophobic Tencel) results in a 5% increase in water absorption, a higher blending amount (20 to 30%) results in a water absorption of 15% higher, and a hydrophobic fiber higher than 40%. The amount leads to water repellency and low water absorption.

表2顯示疏水性Tencel/黏膠絲摻混物的類似結果。 Table 2 shows similar results for the hydrophobic Tencel/viscose blend.

本發明的另一個目的在於提供一種完全生物可降解的 不織布，其具有合於不同液體的適化表面張力。這可用以藉由對液體吸取或釋放的適化增進拭巾對特定任務的吸水力或清潔力。 Another object of the present invention is to provide a fully biodegradable Non-woven fabric, which has a compliant surface tension for different liquids. This can be used to enhance the water absorption or cleaning power of the wipe for a particular task by accommodating the release or release of the liquid.

實驗室中測定表面的表面張力之方法係顯示於BS ISO 8296：2003中：利用表3所示的不同液體組合(像是水、甲醇、乙二醇單***或甲醯胺)測定表面張力。這些試驗係於，例如，塑膠箔生產時用以檢測表面是否可印刷。同樣使用來自ARCOTest GmbH/Germany的試驗墨液。 The method for determining the surface tension of a surface in a laboratory is shown in BS ISO 8296:2003: Surface tension is determined using different combinations of liquids as shown in Table 3 (such as water, methanol, ethylene glycol monoethyl ether or formamide). These tests are used, for example, to detect whether a surface is printable when the plastic foil is produced. Test ink from ARCOTest GmbH/Germany was also used.

此方法係用以測定一系列混紡織物的表面張力。見到的趨勢係如具有較低表面張力的液體能潤濕該織物表面之 觀察結果推測的，於該摻混物中較大量的疏水性Tencel纖維使該表面張力降低表面張力。表4和第1圖顯示不同混紡織物的表面張力計算值。 This method is used to determine the surface tension of a range of blended fabrics. The trend seen is that a liquid with a lower surface tension can wet the surface of the fabric. The observations presume that a greater amount of hydrophobic Tencel fibers in the blend reduces the surface tension to reduce surface tension. Tables 4 and 1 show calculated surface tension values for different blend fabrics.

此獨創性不織布產品包含摻合親水性和疏水性人造纖維素纖維的不織布及液體且特徵為該不織布的表面張力係在該液體的表面張力加上小於+/- 5%的偏差之範圍中。 This ingenious nonwoven product comprises a nonwoven fabric and a liquid blended with hydrophilic and hydrophobic artificial cellulose fibers and characterized in that the surface tension of the nonwoven fabric is in the range of the surface tension of the liquid plus a deviation of less than +/- 5%.

在親水性和疏水性人造纖維素纖維的摻混物中織物的表面張力可被調整以配合用以潤濕該織物的液體。那意指該拭巾中所用的摻混物影響表面張力，所以可訂做適於液體能快速潤濕表面的情形或拭巾可用以有效率地釋出液體的情形之範圍的拭巾。有一類液體係洗劑(lotion)，其通常含有水；甘醇類像是丙二醇；有機酸類像是苯甲酸、脫水醋酸、檸檬酸；有機酸鹽類像是檸檬酸鈉；乳化劑像是聚山梨醇酯20及其他成分。 The surface tension of the fabric in the blend of hydrophilic and hydrophobic rayon fibers can be adjusted to match the liquid used to wet the fabric. That means that the blend used in the wipe affects the surface tension, so that it can be tailored to the extent that the liquid can wet the surface quickly or the wipe can be used to effectively release the liquid. There is a type of liquid system lotion, which usually contains water; glycols like propylene glycol; organic acids like benzoic acid, dehydrated acetic acid, citric acid; organic acid salts like sodium citrate; emulsifiers like poly Sorbitol 20 and other ingredients.

頃亦發現附帶地，在一包拭巾中的較佳洗劑分佈可藉由選擇親水性和疏水性人造纖維素纖維的最佳摻混物達成。 It has also been found that, incidentally, the preferred lotion distribution in a pack of wipes can be achieved by selecting the optimum blend of hydrophilic and hydrophobic man-made cellulosic fibers.

濕拭巾正常塞在成疊典型10至超過100條單一拭巾的包裝袋中。儲存時，該洗劑由於重力傾向從該包頂端漏到底部，所以該疊最頂端的拭巾變得較乾，而底部拭巾濕透且液體可能積於該包底部。這導致該洗劑不方便的不均勻分佈，影響來自該包的單一拭巾之功效。 The wet wipes are normally stuffed in a package that typically spans from 10 to more than 100 single wipes. Upon storage, the lotion leaks from the top of the bag to the bottom due to gravity, so the topmost wipe of the stack becomes drier, while the bottom wipe is soaked and liquid may accumulate at the bottom of the bag. This results in an inconvenient uneven distribution of the lotion, affecting the efficacy of a single wipe from the pack.

液體保持及釋放試驗程式 Liquid retention and release test program

裁剪80片射流噴網不織布(10×10cm)並平衡水分並測量每一片的重量。把那些單片疊起來並利用典型濕拭巾洗劑(含有水、丙二醇、苯甲酸、脫水醋酸、檸檬酸、檸檬酸鈉、聚山梨醇酯20)依照1：2.5的比率(1g拭巾，2.5g洗劑)浸泡，其後把那疊置於塑膠膜中真空密封起來。把這個保持在黑暗的空調室中4周。其後再稱取每個單層的重量並將結果顯示於下列圖式中： Cut 80 spunlace non-woven fabrics (10 x 10 cm) and balance the moisture and measure the weight of each. Stack the individual pieces and use a typical wet wipe lotion (containing water, propylene glycol, benzoic acid, dehydrated acetic acid, citric acid, sodium citrate, polysorbate 20) in a ratio of 1:2.5 (1g wipes, 2.5 g of lotion) soaked, then the stack was placed in a plastic film and vacuum sealed. Keep this in the dark air-conditioned room for 4 weeks. The weight of each single layer is then weighed and the results are shown in the following figures:

第2圖顯示30%疏水性Tencel 1.7 dtex/38mm毛面與70%黏膠絲1.7 dtex/40mm毛面的摻混物之液體保持及釋放行為。 Figure 2 shows the liquid retention and release behavior of a blend of 30% hydrophobic Tencel 1.7 dtex/38 mm matte and 70% viscose 1.7 dtex/40 mm matte.

第3圖顯示70% Trevira PES 1.7/38毛面與30% Tencel標準1.7/38毛面的摻混物之液體保持及釋放行為。 Figure 3 shows the liquid retention and release behavior of a blend of 70% Trevira PES 1.7/38 matte finish and 30% Tencel standard 1.7/38 matte finish.

可見到該疏水性Tencel與黏膠絲的摻混物(第2圖)顯示該疊底部和頂部之間的拭巾洗劑含量低非常多的 變量，與該聚酯和Tencel的摻混物(第3圖)相比低約40%。 It can be seen that the blend of hydrophobic Tencel and viscose (Fig. 2) shows that the amount of wipes between the bottom and the top of the stack is very low. The variable is about 40% lower than the blend of the polyester and Tencel (Fig. 3).

此包含摻混疏水性纖維素纖維與纖維素纖維的不織布之發明性不織布產物的特徵為當根據液體保持及釋放試驗測試時該水溶液的分佈均勻度偏差優於+/- 15%。 The inventive nonwoven web product comprising a nonwoven fabric blended with hydrophobic cellulose fibers and cellulosic fibers is characterized by a dispersion uniformity deviation of the aqueous solution of better than +/- 15% when tested according to liquid retention and release tests.

此外所有由疏水性萊塞爾製造的織物及帶纖維素纖維的摻混物通通是生物可降解的。 Furthermore, all fabrics made from hydrophobic lysels and blends with cellulosic fibers are biodegradable.

此發明性不織布係有益地用於衛生應用像是廁所清潔巾、卸妝棉、化妝用拭巾、嬰兒用拭巾和衛生用紙、家用拭巾、工業用拭巾，及食品包裝應用。 The inventive nonwoven fabric is advantageously used in sanitary applications such as toilet wipes, make-up removers, cosmetic wipes, baby wipes and toilet papers, household wipes, industrial wipes, and food packaging applications.

另一個用途係於工業應用例如吸油材料，像是墊子。 Another use is in industrial applications such as oil absorbing materials such as mats.

Claims (15)

一種包含兩種纖維類型的摻合物之不織布，其中第一種纖維類型係纖維素纖維，且第二種纖維類型係生物可降解的疏水性纖維素纖維，該不織布的特徵為比包含僅一種前述纖維類型者的不織布對一液體具有的最高吸收率高至少5%之同一液體的吸收率。 A nonwoven fabric comprising a blend of two fiber types, wherein the first fiber type is a cellulose fiber and the second fiber type is a biodegradable hydrophobic cellulose fiber, the nonwoven fabric being characterized by containing only one The non-woven fabric of the aforementioned fiber type has an absorption rate of the same liquid having a maximum absorption rate of at least 5% for a liquid. 如申請專利範圍第1項之不織布，其中該摻混物包含5至40重量%的第二種纖維類型之纖維及95至60重量%的第一種纖維類型之纖維，較佳5至30重量%的第二種纖維類型之纖維及95至70重量%的第一種纖維類型之纖維，總共100%且該液體具有大於或等於50mN/m的表面張力。 Non-woven fabric according to claim 1, wherein the blend comprises 5 to 40% by weight of fibers of the second fiber type and 95 to 60% by weight of fibers of the first fiber type, preferably 5 to 30% by weight. % of the fibers of the second fiber type and 95 to 70% by weight of the fibers of the first fiber type, a total of 100% and the liquid has a surface tension of greater than or equal to 50 mN/m. 如申請專利範圍第1項之不織布，其中該摻混物包含40至95重量%的第二種纖維類型之纖維及60至5重量%的第一種纖維類型之纖維，較佳30至95重量%的第二種纖維類型之纖維及70至5重量%的第一種纖維類型之纖維，總共100%且該液體小於50mN/m的表面張力。 Non-woven fabric according to claim 1, wherein the blend comprises 40 to 95% by weight of fibers of the second fiber type and 60 to 5% by weight of fibers of the first fiber type, preferably 30 to 95% by weight. % of the second fiber type of fiber and 70 to 5% by weight of the first fiber type of fiber, a total of 100% and the liquid has a surface tension of less than 50 mN/m. 如申請專利範圍第1至3項中任一項之不織布，其中該第一和第二種纖維類型係人造纖維素纖維，選自由黏膠絲纖維(viscose fibre)、萊塞爾纖維(lyocell fibre)或莫代爾纖維(modal fibre)所組成的群組。 A non-woven fabric according to any one of claims 1 to 3, wherein the first and second fiber types are man-made cellulose fibers selected from the group consisting of viscose fibres and lyocell fibres. Or a group of modal fibres. 如申請專利範圍第1至3項中任一項之不織布，其中該第一和第二種纖維類型係天然纖維素纖維，像是棉花。 A non-woven fabric according to any one of claims 1 to 3, wherein the first and second fiber types are natural cellulose fibers, such as cotton. 如申請專利範圍第1至3項中任一項之不織布，其中該疏水性纖維含有以纖維素的重量為基準計為0.01至1%，較佳0.05至0.2%的疏水劑。 The non-woven fabric according to any one of claims 1 to 3, wherein the hydrophobic fiber contains from 0.01 to 1%, preferably from 0.05 to 0.2%, based on the weight of the cellulose, of a hydrophobic agent. 如申請專利範圍第6項之不織布，其中該疏水劑係烷基-烯酮-二聚體。 The non-woven fabric of claim 6, wherein the hydrophobic agent is an alkyl-ketene-dimer. 如申請專利範圍第1至3項中任一項之不織布，其中該不織布係藉由包括乾式佈層、濕式佈層或氣流成網(airlaying)的典型不織布程序製成。 A non-woven fabric according to any one of claims 1 to 3, wherein the nonwoven fabric is produced by a typical non-woven process comprising a dry cloth layer, a wet cloth layer or airlaying. 如申請專利範圍第1至3項中任一項之不織布，其中該不織布係藉由包括水力纏絡法(hydroentangling)、針孔法(needlepunching)或化學結合法的典型不織布製程結合。 A non-woven fabric according to any one of claims 1 to 3, wherein the nonwoven fabric is combined by a typical nonwoven process including hydroentangling, needle punching or chemical bonding. 如申請專利範圍第1至3項中任一項之不織布，其中該不織布具有10至2000g/cm2的基重。 The non-woven fabric of any one of claims 1 to 3, wherein the nonwoven fabric has a basis weight of 10 to 2000 g/cm 2 . 一種包含如申請專利範圍第1至10項之不織布及液體之不織布產物，其特徵為該不織布的表面張力係在該液體的表面張力加上小於+/- 5%的偏差之範圍中。 A nonwoven fabric product comprising a nonwoven fabric and a liquid according to claims 1 to 10, characterized in that the surface tension of the nonwoven fabric is in a range in which the surface tension of the liquid is less than +/- 5%. 如申請專利範圍第11項之不織布產物，其中該液體係洗劑。 The non-woven product of claim 11, wherein the liquid system lotion. 一種包含如申請專利範圍第11項之不織布之不織布產物，其特徵為當根據說明的“液體保持及釋放試驗”測試時該水溶液的分佈均勻度偏差優於+/- 15%。 A non-woven fabric product comprising a non-woven fabric according to claim 11 of the patent application, characterized in that the distribution uniformity deviation of the aqueous solution is better than +/- 15% when tested according to the description of the "liquid retention and release test". 一種如申請專利範圍第1至13項之不織布之用途，係用於衛生應用，像是廁所清潔巾、卸妝棉、化妝用 拭巾、嬰兒用拭巾、衛生用紙、家用拭巾、工業用拭巾，及食品包裝應用。 A non-woven fabric as claimed in claims 1 to 13 for use in sanitary applications such as toilet wipes, makeup remover, and make-up Wipes, baby wipes, sanitary paper, household wipes, industrial wipes, and food packaging applications. 一種如申請專利範圍第1至13項之不織布之用途，其中該不織布係用於工業應用像是吸油材料。 A use of a non-woven fabric as claimed in claims 1 to 13, wherein the nonwoven fabric is used for industrial applications such as oil absorbing materials.
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