JP2006241644A - Flexible spunlace nonwoven fabric - Google Patents
Flexible spunlace nonwoven fabric Download PDFInfo
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- JP2006241644A JP2006241644A JP2005061074A JP2005061074A JP2006241644A JP 2006241644 A JP2006241644 A JP 2006241644A JP 2005061074 A JP2005061074 A JP 2005061074A JP 2005061074 A JP2005061074 A JP 2005061074A JP 2006241644 A JP2006241644 A JP 2006241644A
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- nonwoven fabric
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- 239000004745 nonwoven fabric Substances 0.000 title claims abstract description 70
- 239000000835 fiber Substances 0.000 claims abstract description 85
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 37
- -1 polytrimethylene terephthalate Polymers 0.000 claims abstract description 31
- 238000000034 method Methods 0.000 claims abstract description 27
- 229920002215 polytrimethylene terephthalate Polymers 0.000 claims abstract description 23
- 238000005452 bending Methods 0.000 claims abstract description 6
- 239000011230 binding agent Substances 0.000 claims description 17
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 8
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 4
- 229920000742 Cotton Polymers 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 abstract description 4
- 235000014443 Pyrus communis Nutrition 0.000 description 12
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 11
- 239000000123 paper Substances 0.000 description 9
- 239000000463 material Substances 0.000 description 8
- 230000000704 physical effect Effects 0.000 description 7
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 229920000728 polyester Polymers 0.000 description 4
- 229920000139 polyethylene terephthalate Polymers 0.000 description 4
- 239000005020 polyethylene terephthalate Substances 0.000 description 4
- NMYFVWYGKGVPIW-UHFFFAOYSA-N 3,7-dioxabicyclo[7.2.2]trideca-1(11),9,12-triene-2,8-dione Chemical group O=C1OCCCOC(=O)C2=CC=C1C=C2 NMYFVWYGKGVPIW-UHFFFAOYSA-N 0.000 description 3
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 3
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 125000001931 aliphatic group Chemical group 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229920001778 nylon Polymers 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 2
- 229920000297 Rayon Polymers 0.000 description 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- 125000002723 alicyclic group Chemical group 0.000 description 2
- 125000003118 aryl group Chemical group 0.000 description 2
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 2
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 239000012567 medical material Substances 0.000 description 2
- 239000011087 paperboard Substances 0.000 description 2
- YPFDHNVEDLHUCE-UHFFFAOYSA-N propane-1,3-diol Chemical compound OCCCO YPFDHNVEDLHUCE-UHFFFAOYSA-N 0.000 description 2
- 239000002964 rayon Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- HJIAMFHSAAEUKR-UHFFFAOYSA-N (2-hydroxyphenyl)-phenylmethanone Chemical class OC1=CC=CC=C1C(=O)C1=CC=CC=C1 HJIAMFHSAAEUKR-UHFFFAOYSA-N 0.000 description 1
- WTPYFJNYAMXZJG-UHFFFAOYSA-N 2-[4-(2-hydroxyethoxy)phenoxy]ethanol Chemical compound OCCOC1=CC=C(OCCO)C=C1 WTPYFJNYAMXZJG-UHFFFAOYSA-N 0.000 description 1
- 229910002012 Aerosil® Inorganic materials 0.000 description 1
- 239000005711 Benzoic acid Substances 0.000 description 1
- IISBACLAFKSPIT-UHFFFAOYSA-N Bisphenol A Natural products C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 1
- 229920001634 Copolyester Polymers 0.000 description 1
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 1
- 241000790917 Dioxys <bee> Species 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229920002978 Vinylon Polymers 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- ZRQCPCNEQYFFJV-UHFFFAOYSA-N benzene-1,4-diol;phenol Chemical compound OC1=CC=CC=C1.OC1=CC=CC=C1.OC1=CC=C(O)C=C1 ZRQCPCNEQYFFJV-UHFFFAOYSA-N 0.000 description 1
- 235000010233 benzoic acid Nutrition 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- QYQADNCHXSEGJT-UHFFFAOYSA-N cyclohexane-1,1-dicarboxylate;hydron Chemical compound OC(=O)C1(C(O)=O)CCCCC1 QYQADNCHXSEGJT-UHFFFAOYSA-N 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000002649 leather substitute Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000005445 natural material Substances 0.000 description 1
- 239000002667 nucleating agent Substances 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- IBBQVGDGTMTZRA-UHFFFAOYSA-N sodium;2-sulfobenzene-1,3-dicarboxylic acid Chemical compound [Na].OC(=O)C1=CC=CC(C(O)=O)=C1S(O)(=O)=O IBBQVGDGTMTZRA-UHFFFAOYSA-N 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 239000003232 water-soluble binding agent Substances 0.000 description 1
Landscapes
- Absorbent Articles And Supports Therefor (AREA)
- Nonwoven Fabrics (AREA)
- Paper (AREA)
Abstract
Description
本発明は、柔軟性スパンレース不織布に関し、さらに詳しくは、衛生材料・医療材料や家庭用品などに適応することができる、地合いが良好な柔軟性スパンレース不織布に関する。 The present invention relates to a flexible spunlace nonwoven fabric, and more particularly to a flexible spunlace nonwoven fabric that can be applied to sanitary materials, medical materials, household goods, and the like and has a good texture.
従来、衛生材料や医療材料、家庭用品などに適応できる柔軟な不織布としては、乾式スパンレース法がある。これは、コットンやレーヨンといった天然系素材やポリエステル、ナイロンといった汎用合成繊維をカード法によりウェブを形成した後に高圧水流で繊維どうしを絡合させたものである。しかしながら、カード法によるウェブ形成の問題点である地合い不良が高圧水流後も残り、均一性に欠けたり、繊維長が長いことによる剛性が高いといった問題を抱えている。
一方、特許文献１（特許第２８７１８６４号公報）には、繊維径が１〜５μｍであり、特定のアスペクト比（繊径と繊維長の比）を有する繊維を湿式抄紙法によりシート化した後、水流で絡合した不織布が提案されており、このものは、は地合いは良好であるものの、柔軟性に欠けたり、不織布の強度が弱いといった問題を有していた。
On the other hand, in Patent Document 1 (Patent No. 2871864), a fiber diameter is 1 to 5 μm, and a fiber having a specific aspect ratio (ratio of fiber diameter and fiber length) is formed into a sheet by a wet papermaking method. A nonwoven fabric entangled with a water flow has been proposed. Although this fabric has a good texture, it has problems such as lack of flexibility and weakness of the nonwoven fabric.
本発明の目的は、従来技術が有していた問題点を解消し、地合いが良好であり柔軟性を有し、衛生材料や家庭用品などに適応することができる柔軟性不織布を提供することにある。 An object of the present invention is to provide a flexible nonwoven fabric that solves the problems of the prior art, has good texture, has flexibility, and can be applied to sanitary materials and household items. is there.
本発明は、繊度が０．０５〜６ｄｔｅｘ、繊維長が２〜２０ｍｍであるポリトリメチレンテレフタレート短繊維を５０重量％以上含み、湿式抄造法で得られた湿式不織布に高圧水流処理が施されてなるスパンレース不織布であって、目付が３０〜３００ｇ／ｍ２、かつ剛軟度が２〜６ｃｍであることを特徴とする柔軟性スパンレース不織布（以下、単に「不織布」ともいう）に関する。
本発明の不織布は、他繊維としてバインダー繊維を３〜１５重量％含み、バインダー繊維どうしおよび／またはバインダー繊維と上記ポリトリメチレンテレフタレート短繊維とが接着された後に高圧水流処理が施されてものであってもよい。
上記バインダー繊維としては、ポリビニルアルコール系繊維が挙げられる。
本発明の不織布は、上記の湿式不織布を２層以上積層して高圧水流処理が施されたものであってもよい。
この場合、各層の原綿組成は互いに異なってもよい。
The present invention includes a polytrimethylene terephthalate short fiber having a fineness of 0.05 to 6 dtex and a fiber length of 2 to 20 mm in an amount of 50% by weight or more, and a wet nonwoven fabric obtained by a wet papermaking method is subjected to high-pressure water flow treatment. And a flexible spunlace nonwoven fabric (hereinafter also simply referred to as “nonwoven fabric”) having a basis weight of 30 to 300 g / m 2 and a bending resistance of 2 to 6 cm.
The nonwoven fabric of the present invention contains 3 to 15% by weight of binder fibers as other fibers, and is subjected to high-pressure water flow treatment after the binder fibers and / or the binder fibers and the short polytrimethylene terephthalate fibers are bonded. There may be.
Examples of the binder fiber include polyvinyl alcohol fibers.
The nonwoven fabric of the present invention may be one obtained by laminating two or more layers of the above-described wet nonwoven fabric and subjected to high-pressure water flow treatment.
In this case, the raw cotton composition of each layer may be different from each other.
本発明の不織布は、地合いが良好であり、柔軟性を有し、衛生材料や家庭用品などに適応することができる。 The nonwoven fabric of the present invention has a good texture, has flexibility, and can be applied to sanitary materials and household items.
以下、本発明について詳しく説明する。
本発明で使用するポリトリメチレンテレフタレート短繊維とは、トリメチレンテレフタレート単位を主たる繰り返し単位とするポリエステル繊維からなる短繊維をいい、トリメチレンテレフタレート単位が約５０％以上、好ましくは７０モル％以上、さらに好ましくは８０モル％以上、特に好ましくは９０モル％以上のものをいう。従って、第３成分としての他の酸成分および／またはグリコール成分の合計量が約５０モル％以下、好ましくは３０モル％以下、さらに好ましくは２０モル％以下、特に好ましくは１０モル％以下の範囲で含有されたポリトリメチレンテレフタレートを含有する。
The present invention will be described in detail below.
The polytrimethylene terephthalate short fiber used in the present invention refers to a short fiber composed of a polyester fiber having a trimethylene terephthalate unit as a main repeating unit, and the trimethylene terephthalate unit is about 50% or more, preferably 70 mol% or more. More preferably 80 mol% or more, particularly preferably 90 mol% or more. Therefore, the total amount of the other acid component and / or glycol component as the third component is about 50 mol% or less, preferably 30 mol% or less, more preferably 20 mol% or less, particularly preferably 10 mol% or less. Containing polytrimethylene terephthalate.
ポリトリメチレンテレフタレートは、テレフタール酸またはその機能的誘導体とトリメチレングリコールまたはその機能的誘導体とを、触媒の存在下で適当な反応条件下に縮合させることにより製造される。この製造過程において、適当な一種または二種以上の第３成分を添加して共重合ポリエステルとしても良いし、またポリエチレンテレフタレートなどのポリトリメチレンテレフタレート以外のポリエステル、ナイロンなどとポリトリメチレンテレフタレートを別個に製造した後、ブレンドしたり、複合紡糸（鞘芯、サイドバイサイドなど）しても良い。 Polytrimethylene terephthalate is produced by condensing terephthalic acid or a functional derivative thereof with trimethylene glycol or a functional derivative thereof in the presence of a catalyst under suitable reaction conditions. In this production process, one or two or more appropriate third components may be added to form a copolyester, or polyester other than polytrimethylene terephthalate such as polyethylene terephthalate, nylon, etc., and polytrimethylene terephthalate may be separated. After being manufactured, they may be blended or composite-spun (sheath core, side-by-side, etc.).
添加する第３成分としては、脂肪族ジカルボン酸（シュウ酸、アジピン酸）、脂環族ジカルボン酸（シクロヘキサンジカルボン酸など）、芳香族ジカルボン酸（イソフタル酸、ソジウムスルホイソフタル酸）、脂肪族グリコール（エチレングリコール、１，２−プロピレングリコール、テトラメチレングリコールなど）、脂環族グリコール（シクロヘキサングリコールなど）、芳香族ジオキシ化合物（ハイドロキノンビスフェノールＡなど）、芳香族を含む脂肪族グリコ−ル（１，４−ビス（β−ヒドロキシエトキシ）ベンゼンなど）、脂肪族オキシカルボン酸（ｐ−オキシ安息香酸など）などが挙げられる。また、１個または３個以上のエステル形成性官能基を有する化合物（安息香酸などまたはグリセリンなど）も重合体が実質的に線状である範囲で使用できる。 As the third component to be added, aliphatic dicarboxylic acid (oxalic acid, adipic acid), alicyclic dicarboxylic acid (cyclohexanedicarboxylic acid, etc.), aromatic dicarboxylic acid (isophthalic acid, sodium sulfoisophthalic acid), aliphatic glycol (Ethylene glycol, 1,2-propylene glycol, tetramethylene glycol, etc.), alicyclic glycol (cyclohexane glycol, etc.), aromatic dioxy compounds (hydroquinone bisphenol A, etc.), aromatic glycols containing aromatics (1, 4-bis (β-hydroxyethoxy) benzene), aliphatic oxycarboxylic acid (p-oxybenzoic acid, etc.) and the like. In addition, compounds having one or three or more ester-forming functional groups (such as benzoic acid or glycerin) can also be used within a range in which the polymer is substantially linear.
さらに、ポリトリメチレンテレフタレートには、二酸化チタンなどの艶消し剤、リン酸などの安定剤、ヒドロキシベンゾフェノン誘導体などの紫外線吸収剤、タルクなどの結晶化核剤、アエロジルなどの易滑剤、ヒンダードフェノール誘導体の抗酸化剤、難燃剤、制電剤、顔料、蛍光増白剤、赤外線吸収剤、消泡剤などを含有させても良い。 In addition, matriminating agents such as titanium dioxide, stabilizers such as phosphoric acid, UV absorbers such as hydroxybenzophenone derivatives, crystallization nucleating agents such as talc, lubricants such as aerosil, and hindered phenols are included in polytrimethylene terephthalate. Derivative antioxidants, flame retardants, antistatic agents, pigments, fluorescent brighteners, infrared absorbers, antifoaming agents, and the like may also be included.
本発明に用いられるポリトリメチレンテレフタレート短繊維の繊度は、０．０５〜６ｄｔｅｘである。０．０５ｄｔｅｘ未満では、風合いは柔らかくなるものの、抄紙工程における水流の影響を受けやすく、地合い悪化の原因となるため好ましくない。一方、６ｄｔｅｘを超えると、風合いが硬くなったり、不織布に占める繊維の構成本数が少なくなり、好ましくない。好ましくは、０．６〜３．３ｄｔｅｘである。 The fineness of the polytrimethylene terephthalate short fibers used in the present invention is 0.05 to 6 dtex. If it is less than 0.05 dtex, the texture becomes soft, but it is not preferred because it is easily affected by the water flow in the paper making process and causes deterioration of the texture. On the other hand, if it exceeds 6 dtex, the texture becomes hard and the number of fibers constituting the nonwoven fabric decreases, which is not preferable. Preferably, it is 0.6 to 3.3 dtex.
また、上記ポリトリメチレンテレフタレート短繊維の繊維長は、２〜２０ｍｍであり、好ましくは３〜１０ｍｍである。２ｍｍ未満では、不織布としての強度が得られにくいため好ましくない。一方、２０ｍｍを超えると、抄紙法による繊維分散が極めて悪くなり、地合い悪化の原因となるため好ましくない。 Moreover, the fiber length of the said polytrimethylene terephthalate short fiber is 2-20 mm, Preferably it is 3-10 mm. If it is less than 2 mm, it is difficult to obtain the strength as a nonwoven fabric, which is not preferable. On the other hand, if it exceeds 20 mm, fiber dispersion by the papermaking method becomes extremely poor, which causes deterioration of the texture, which is not preferable.
本発明に用いられるポリトリメチレンテレフタレート短繊維の捲縮については、ストレート繊維、捲縮を付与した繊維のどちらでも良い。通常、ストレート繊維は抄紙法の工程安定性、捲縮繊維は嵩性向上のために各々用いられている。 About the crimp of the polytrimethylene terephthalate short fiber used for this invention, either a straight fiber or the fiber which gave the crimp may be sufficient. Usually, straight fibers are used for process stability of the papermaking method, and crimped fibers are used for improving bulkiness.
本発明の不織布において、上記ポリトリメチレンテレフタレート短繊維の比率は重量比率で５０％以上である。５０重量％未満では、ポリトリメチレンテレフタレート短繊維の有する特徴を発揮することが不十分となり、本発明である柔軟性に優れた不織布を得ることができないため好ましくない。 In the nonwoven fabric of the present invention, the ratio of the polytrimethylene terephthalate short fibers is 50% or more by weight. If it is less than 50% by weight, the characteristics of the polytrimethylene terephthalate short fibers are not sufficiently exhibited, and the nonwoven fabric excellent in flexibility according to the present invention cannot be obtained, which is not preferable.
本発明の不織布を構成する他の繊維としては、特に限定される事はなく、天然パルプ、合成パルプ、レーヨン、ナイロン、ポリエステル、ビニロンなどの湿式不織布に使用されている素材を適応することができる。 Other fibers constituting the nonwoven fabric of the present invention are not particularly limited, and materials used in wet nonwoven fabrics such as natural pulp, synthetic pulp, rayon, nylon, polyester, vinylon, etc. can be applied. .
本発明の不織布は、上記のポリトリメチレンテレフタレート短繊維を湿式不織布（抄紙）となした後、これに高圧水流処理を施したものであることが大切である。乾式不織布製造法による場合では、地合の均一な不織布、特に目付の小さい不織布は得られないので好ましくない。また、高圧水流が施されていない場合には、得られる不織布の破断強伸度が低下し、一方高圧水流処理でなく、例えばニードルパンチのような交絡処理では、繊維の交絡性が低下して本発明の目的とする柔軟性不織布は得られない。 It is important that the nonwoven fabric of the present invention is obtained by forming the above-mentioned polytrimethylene terephthalate short fiber into a wet nonwoven fabric (papermaking) and then subjecting it to a high-pressure water stream treatment. In the case of the dry nonwoven fabric production method, a uniform nonwoven fabric, particularly a nonwoven fabric with a small basis weight cannot be obtained, which is not preferable. In addition, when the high-pressure water flow is not applied, the breaking strength and elongation of the resulting nonwoven fabric is reduced, while the entanglement treatment such as needle punching is not performed in the high-pressure water flow treatment, and the fiber entanglement is reduced. The flexible nonwoven fabric which is the object of the present invention cannot be obtained.
湿式抄紙する方法としては、従来公知の方法をそのまま採用すればよく、例えば短繊維を離解機を用いて水中に均一に分散させ、得られたスラリーを常法に従って抄紙となせばよい。
また、高圧水流処理を施す方法としては、例えば、前述で得られた湿式不織布（抄紙）を、未乾燥の水分を含んだ状態で１００メッシュ以下のネットに移送し、ノズル径０．２ｍｍのノズルから１０〜４０ｋｇ／ｃｍ2 、好ましくは１５〜２５ｋｇ／ｃｍ2 の高圧水流を一方の面から噴射処理し、同時に他方の面から吸引（真空吸引）することにより水を脱水し、次いで、ノズル径０．１ｍｍのノズルから３０〜１００ｋｇ／ｃｍ2 、好ましくは４０〜６０ｋｇ／ｃｍ2 の高圧水流を前記の面と同一の面から噴射処理、好ましくは複数回噴射処理し、同時に他方の面から吸引（真空吸引）することにより水を脱水し、引き続いて、この一連の操作を他方の面からも行う方法を採用すればよい。
As a wet papermaking method, a conventionally known method may be employed as it is. For example, short fibers may be uniformly dispersed in water using a disaggregator, and the resulting slurry may be made into papermaking according to a conventional method.
Moreover, as a method of performing the high-pressure water flow treatment, for example, the wet nonwoven fabric (papermaking) obtained above is transferred to a net of 100 mesh or less in a state containing undried moisture, and a nozzle having a nozzle diameter of 0.2 mm is used. 10 to 40 kg / cm 2 , preferably 15 to 25 kg / cm 2 of high pressure water flow is sprayed from one surface and simultaneously sucked (vacuum suction) from the other surface to dehydrate the water, and then the nozzle diameter 30~100kg / cm 2 from 0.1mm nozzle, preferably injection handle high pressure water flow 40~60kg / cm 2 from the surface and the same surface, preferably a plurality of times the injection process, at the same time suction from the other surface A method of dehydrating water by (vacuum suction) and subsequently performing this series of operations also from the other surface may be adopted.
高圧水流処理した不織布は、さらに吸引脱水後絞りローラーを通過させ、引き続いてドラム型乾燥機や熱風式乾燥機にて乾燥すればよい。 The non-woven fabric subjected to the high-pressure water flow treatment may be further passed through a squeezing roller after suction dehydration, and subsequently dried with a drum-type dryer or a hot-air dryer.
なお、上記抄紙工程と高圧水流工程とは、連続で行っても非連続で行ってもよいが、不織布の生産性を考慮した場合、非連続で行うことが望ましい。この場合には、抄紙工程で得られる不織布を一旦乾燥させて巻き取る必要がある。
この場合には、不織布の取扱い性を向上させるため、芯鞘型複合繊維や熱水可溶性のバインダー繊維、特にポリビニルアルコール系バインダー繊維を少量、例えば３〜１５重量％、好ましくは３〜５重量％（不織布を基準とする）の範囲で併用しておくことが好ましい。このようなバインダー繊維は、不織布の製造が完了した時点で、８０〜９０度の熱水で処理して溶解除去することにより、柔軟性の良好な不織布となすことができる。なお、かかるバインダー繊維の繊度および繊維長は、前記オリゴマーとトリメチレンテレフタレート短繊維と同程度であることが、地合の均一な湿式不織布を得るうえで好ましい。
The paper making process and the high-pressure water flow process may be performed continuously or discontinuously. However, in consideration of the productivity of the nonwoven fabric, it is preferable to discontinuously perform the process. In this case, the nonwoven fabric obtained in the paper making process needs to be once dried and wound up.
In this case, in order to improve the handleability of the nonwoven fabric, a small amount, for example, 3 to 15% by weight, preferably 3 to 5% by weight, of a core-sheath type composite fiber or a hot water-soluble binder fiber, particularly a polyvinyl alcohol-based binder fiber. It is preferable to use in combination within the range (based on the nonwoven fabric). Such a binder fiber can be made into a nonwoven fabric with good flexibility by treating with hot water of 80 to 90 degrees and dissolving and removing it when the production of the nonwoven fabric is completed. In addition, it is preferable that the fineness and fiber length of this binder fiber are the same level as the said oligomer and trimethylene terephthalate short fiber, in order to obtain a wet nonwoven fabric with uniform formation.
本発明においては、上述の様にして得た柔軟性不織布は、さらに目付が３０〜３００ｇ／ｍ2 、好ましくは５０〜２００ｇ／ｍ2 、かつ剛軟度が２〜６ｃｍ、好ましくは２．５〜４ｃｍの性能を有していることが必要である。目付が３０ｇ／ｍ２未満では、高圧水流を施すときに、繊維脱落があるため好ましく、一方、３００ｇ／ｍ２を超えると、得られた不織布の剛性が高くなる傾向にあるため好ましくない。また、剛軟度が２ｃｍ未満では、シートとして腰がなさ過ぎるため好ましくなく、一方、６ｃｍを超えると、剛性が高くなる傾向にあるため好ましくない。
なお、本発明の不織布において、剛軟度を本発明の範囲内にするには、繊維構成や高圧水流処理の条件によって調整が可能である。
In the present invention, the flexible nonwoven fabric obtained as described above further has a basis weight of 30 to 300 g / m 2 , preferably 50 to 200 g / m 2 , and a bending resistance of 2 to 6 cm, preferably 2.5. It is necessary to have a performance of ˜4 cm. When the basis weight is less than 30 g / m 2, it is preferable because there is fiber dropping when a high-pressure water flow is applied. On the other hand, when it exceeds 300 g / m 2 , the resulting nonwoven fabric tends to have high rigidity, which is not preferable. Further, if the bending resistance is less than 2 cm, it is not preferable because the sheet is too stiff. On the other hand, if it exceeds 6 cm, the rigidity tends to increase, which is not preferable.
In addition, in the nonwoven fabric of this invention, in order to make bending resistance into the range of this invention, it can adjust with the conditions of a fiber structure and a high pressure water flow process.
なお、上記熱処理の方法は、抄紙工程で通常使用されるような、ヤンキードライヤー、多段ドライヤー、ハイカレンダー（ローラー素材：メタル／メタル）、セミカレンダー（ローラー素材：金属／ペーパー、金属／弾性ゴム）を使用することができる。
また、本発明の不織布は、単層でも多層でも特に限定されないが、加工の安定性を考慮し、２〜５層構造であることが好ましい。
In addition, the above-mentioned heat treatment method is a Yankee dryer, multi-stage dryer, high calender (roller material: metal / metal), semi-calendar (roller material: metal / paper, metal / elastic rubber), which is usually used in the papermaking process. Can be used.
Moreover, although the nonwoven fabric of this invention is not specifically limited, even if it is a single layer or a multilayer, it is preferable that a 2-5 layer structure is considered in consideration of the stability of a process.
以下、本発明をさらに下記実施例により具体的に説明するが、本発明の範囲はこれら実施例により何等限定を受けるものではない。なお、実施例中に記載した物性は以下の方法により測定した。
引張り強度（裂断長）：
ＪＩＳ Ｐ８１１３（紙および板紙の引張強さ試験方法）に基づいて実施した。
伸度：
ＪＩＳ Ｐ８１１３（紙および板紙の引張強さ試験方法）における破断点までの伸びを伸度とした。
剛軟度：
ＪＩＳ Ｌ１０９６（一般織物試験方法）に基づき実施した。
Hereinafter, the present invention will be described in more detail with reference to the following examples. However, the scope of the present invention is not limited to these examples. The physical properties described in the examples were measured by the following methods.
Tensile strength (breaking length):
The test was carried out based on JIS P8113 (Test method for tensile strength of paper and paperboard).
Elongation:
The elongation up to the breaking point in JIS P8113 (paper and paperboard tensile strength test method) was defined as the elongation.
Flexibility:
The test was carried out based on JIS L1096 (General Textile Test Method).
実施例１
ポリトリメチレンテレフタレート短繊維（繊度１．１ｄｔｅｘ、繊維長５ｍｍ、捲縮ナシ）を水中にて攪拌し、ＴＡＰＰＩ（熊谷理機工業製角型シートマシン、以下同じ）により５０ｇ／ｍ２を抄紙しウェブを得た。
この不織布を１５０メッシュのネットに載せ、ノズル径０．１ｍｍのノズルより水圧２０ｋｇ／ｃｍ２にて処理し、続いて４０ｋｇ／ｃｍ２で処理を行った。得られた処理シートを反転させ、他方から４０ｋｇ／ｃｍ２で処理し繊維を絡合させ、エアースルードライヤーを用いて１２０℃で乾燥し柔軟性不織布を得た。得られた物性を表１に示す。
Example 1
Polytrimethylene terephthalate short fibers (fineness: 1.1 dtex, fiber length: 5 mm, crimped pear) are stirred in water, and 50 g / m 2 is made with TAPPI (Kumagaya Riki Kogyo square sheet machine, the same shall apply hereinafter). Got the web.
This nonwoven fabric was placed on a 150-mesh net and treated at a water pressure of 20 kg / cm 2 from a nozzle having a nozzle diameter of 0.1 mm, followed by treatment at 40 kg / cm 2 . The obtained treated sheet was inverted, treated with 40 kg / cm 2 from the other side to entangle the fibers, and dried at 120 ° C. using an air-through dryer to obtain a flexible nonwoven fabric. The obtained physical properties are shown in Table 1.
実施例２
ポリトリメチレンテレフタレート短繊維（繊度１．１ｄｔｅｘ、繊維長５ｍｍ、捲縮ナシ）、ポリビニルアルコール系バインダー繊維（繊度１．１ｄｔｅｘ、繊維長３ｍｍ、捲縮ナシ、クラレ社製ＶＰＢ１０３）を９５／５の重量比率で計り取り水中にて攪拌し、ＴＡＰＰＩにより５０ｇ／ｍ２を抄紙しウェブを得た。この不織布をロータリードライヤー１００℃で処理し不織布を得た。
この不織布を１５０メッシュのネットに載せ、ノズル径０．１ｍｍのノズルより水圧２０ｋｇ／ｃｍ２にて処理し、続いて４０ｋｇ／ｃｍ２で処理を行った。得られた処理シートを反転させ、他方から４０ｋｇ／ｃｍ２で処理し繊維を絡合させるとともにポリビニルアルコールバインダーを溶解させた。その後、エアースルードライヤーを用いて１２０℃で乾燥し柔軟性不織布を得た。得られた物性を表１に示す。
Example 2
Polytrimethylene terephthalate short fiber (fineness 1.1 dtex, fiber length 5 mm, crimped pear), polyvinyl alcohol binder fiber (fineness 1.1 dtex, fiber length 3 mm, crimped pear, Kuraray VPB103) of 95/5 A web was obtained by measuring at a weight ratio and stirring in water, and papermaking 50 g / m 2 with TAPPI. This nonwoven fabric was processed at a rotary dryer at 100 ° C. to obtain a nonwoven fabric.
This nonwoven fabric was placed on a 150-mesh net and treated at a water pressure of 20 kg / cm 2 from a nozzle having a nozzle diameter of 0.1 mm, followed by treatment at 40 kg / cm 2 . The obtained treated sheet was inverted and treated from the other side at 40 kg / cm 2 to entangle the fibers and dissolve the polyvinyl alcohol binder. Then, it dried at 120 degreeC using the air through dryer, and obtained the flexible nonwoven fabric. The obtained physical properties are shown in Table 1.
実施例３
ポリトリメチレンテレフタレート短繊維（繊度１．１ｄｔｅｘ、繊維長５ｍｍ、捲縮ナシ）とポリエチレンテレフタレート短繊維（１．１ｄｔｅｘ、繊維長５ｍｍ、捲縮ナシ）を６０／４０の重量比率で計り取り水中にて攪拌し、ＴＡＰＰＩにより５０ｇ／ｍ２を抄紙しウェブを得た。
この不織布を１５０メッシュのネットに載せ、ノズル径０．１ｍｍのノズルより水圧２０ｋｇ／ｃｍ２にて処理し、続いて４０ｋｇ／ｃｍ２で処理を行った。得られた処理シートを反転させ、他方から４０ｋｇ／ｃｍ２で処理し繊維を絡合させ、エアースルードライヤーを用いて１２０℃で乾燥し柔軟性不織布を得た。得られた物性を表１に示す。
Example 3
Polytrimethylene terephthalate short fibers (fineness 1.1 dtex, fiber length 5 mm, crimped pear) and polyethylene terephthalate short fibers (1.1 dtex, fiber length 5 mm, crimped pear) were weighed at a weight ratio of 60/40 and put into water. The mixture was stirred and paper was made at 50 g / m 2 by TAPPI to obtain a web.
This nonwoven fabric was placed on a 150-mesh net and treated at a water pressure of 20 kg / cm 2 from a nozzle having a nozzle diameter of 0.1 mm, followed by treatment at 40 kg / cm 2 . The obtained treated sheet was inverted, treated with 40 kg / cm 2 from the other side to entangle the fibers, and dried at 120 ° C. using an air-through dryer to obtain a flexible nonwoven fabric. The obtained physical properties are shown in Table 1.
実施例４
ポリトリメチレンテレフタレート短繊維（繊度１．１ｄｔｅｘ、繊維長５ｍｍ、捲縮ナシ）、ポリビニルアルコール系バインダー繊維（繊度１．１ｄｔｅｘ、繊維長３ｍｍ、捲縮ナシ、クラレ社製ＶＰＢ１０３）を９５／５の重量比率で計り取り水中にて攪拌し、ＴＡＰＰＩにより５０ｇ／ｍ２を抄紙しウェブを得た。この不織布をロータリードライヤー１００℃で処理し不織布を得た。同様の方法において、繊維構成のみポリトリメチレンテレフタレート短繊維（繊度０．６ｄｔｅｘ、繊維長５ｍｍ、捲縮ナシ）、ポリビニルアルコール系バインダー繊維（繊度１．１ｄｔｅｘ、繊維長３ｍｍ、捲縮ナシ、クラレ社製ＶＰＢ１０３）に変更し５０ｇ／ｍ２の不織布を得た。
両者を積層した不織布を１５０メッシュのネットに載せ、ノズル径０．１ｍｍのノズルより水圧２０ｋｇ／ｃｍ２にて処理し、続いて４０ｋｇ／ｃｍ２で処理を行った。得られた処理シートを反転させ、他方から４０ｋｇ／ｃｍ２で処理し繊維を絡合させるとともにポリビニルアルコールバインダーを溶解させた。その後、エアースルードライヤーを用いて１２０℃で乾燥し柔軟性不織布を得た。得られた物性を表１に示す。
Example 4
Polytrimethylene terephthalate short fiber (fineness 1.1 dtex, fiber length 5 mm, crimped pear), polyvinyl alcohol binder fiber (fineness 1.1 dtex, fiber length 3 mm, crimped pear, Kuraray VPB103) of 95/5 A web was obtained by measuring at a weight ratio and stirring in water, and papermaking 50 g / m 2 with TAPPI. This nonwoven fabric was processed at a rotary dryer at 100 ° C. to obtain a nonwoven fabric. In the same method, only a polytrimethylene terephthalate short fiber (fineness 0.6 dtex, fiber length 5 mm, crimped pear), polyvinyl alcohol binder fiber (fineness 1.1 dtex, fiber length 3 mm, crimped pear, Kuraray Co., Ltd.) The product was changed to VPB103) to obtain a 50 g / m 2 nonwoven fabric.
The nonwoven fabric obtained by laminating the both was placed on a 150-mesh net and treated at a water pressure of 20 kg / cm 2 from a nozzle having a nozzle diameter of 0.1 mm, followed by treatment at 40 kg / cm 2 . The obtained treated sheet was inverted and treated from the other side at 40 kg / cm 2 to entangle the fibers and dissolve the polyvinyl alcohol binder. Then, it dried at 120 degreeC using the air through dryer, and obtained the flexible nonwoven fabric. The obtained physical properties are shown in Table 1.
比較例１
ポリエチレンテレフタレート短繊維（繊度１．１ｄｔｅｘ、繊維長５ｍｍ、捲縮ナシ）を水中にて攪拌し、ＴＡＰＰＩにより５０ｇ／ｍ２を抄紙しウェブを得た。この不織布を１５０メッシュのネットに載せ、ノズル径０．１ｍｍのノズルより水圧２０ｋｇ／ｃｍ２にて処理し、続いて４０ｋｇ／ｃｍ２で処理を行った。得られた処理シートを反転させ、他方から４０ｋｇ／ｃｍ２で処理し繊維を絡合させ、エアースルードライヤーを用いて１２０℃で乾燥し不織布を得た。得られた物性を表１に示す。
Comparative Example 1
Polyethylene terephthalate short fibers (fineness 1.1 dtex, fiber length 5 mm, crimped pear) were stirred in water, and paper was made at 50 g / m 2 with TAPPI to obtain a web. This nonwoven fabric was placed on a 150-mesh net and treated at a water pressure of 20 kg / cm 2 from a nozzle having a nozzle diameter of 0.1 mm, followed by treatment at 40 kg / cm 2 . The obtained treated sheet was inverted, treated with 40 kg / cm 2 from the other side to entangle the fibers, and dried at 120 ° C. using an air-through dryer to obtain a nonwoven fabric. The obtained physical properties are shown in Table 1.
比較例２
ポリトリメチレンテレフタレート短繊維（繊度１．１ｄｔｅｘ、繊維長５ｍｍ、捲縮ナシ）とポリエチレンテレフタレート短繊維（１．１ｄｔｅｘ、繊維長５ｍｍ、捲縮ナシ）を４０／６０の重量比率で計り取り水中にて攪拌し、ＴＡＰＰＩにより５０ｇ／ｍ２を抄紙しウェブを得た。
この不織布を１５０メッシュのネットに載せ、ノズル径０．１ｍｍのノズルより水圧２０ｋｇ／ｃｍ２にて処理し、続いて４０ｋｇ／ｃｍ２で処理を行った。得られた処理シートを反転させ、他方から４０ｋｇ／ｃｍ２で処理し繊維を絡合させ、エアースルードライヤーを用いて１２０℃で乾燥し不織布を得た。得られた物性を表１に示す。
Comparative Example 2
Polytrimethylene terephthalate short fibers (fineness 1.1 dtex, fiber length 5 mm, crimped pear) and polyethylene terephthalate short fibers (1.1 dtex, fiber length 5 mm, crimped pear) were weighed at a weight ratio of 40/60 and put into water. The mixture was stirred and paper was made at 50 g / m 2 by TAPPI to obtain a web.
This nonwoven fabric was placed on a 150-mesh net and treated at a water pressure of 20 kg / cm 2 from a nozzle having a nozzle diameter of 0.1 mm, followed by treatment at 40 kg / cm 2 . The obtained treated sheet was inverted, treated with 40 kg / cm 2 from the other side to entangle the fibers, and dried at 120 ° C. using an air-through dryer to obtain a nonwoven fabric. The obtained physical properties are shown in Table 1.
本発明の不織布は、地合いが良好であり、柔軟性を有するので、おむつや生理用品などの衛生材料やワイピングなどの家庭用品のほか、合成皮革用基布や液体・気体フィルターなどに有用である。
Since the nonwoven fabric of the present invention has a good texture and flexibility, it is useful for sanitary materials such as diapers and sanitary products, household products such as wiping, synthetic leather base fabrics, liquid / gas filters, etc. .
Claims (5)
The flexible spunlace nonwoven fabric according to claim 4, wherein the raw cotton composition of each layer is different from each other.
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| JP2005061074A JP2006241644A (en) | 2005-03-04 | 2005-03-04 | Flexible spunlace nonwoven fabric |
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| JP (1) | JP2006241644A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010527738A (en) * | 2007-05-30 | 2010-08-19 | エスセーアー・ハイジーン・プロダクツ・アーベー | Nonwoven materials used as body facing sheets in absorbent articles |
| JP2010279621A (en) * | 2009-06-05 | 2010-12-16 | Daio Paper Corp | Absorbent article |
| CN103437065A (en) * | 2013-08-07 | 2013-12-11 | 杭州诺邦无纺股份有限公司 | High-permeability mask nonwoven fabric and manufacturing method thereof |
| CN103437068A (en) * | 2013-08-07 | 2013-12-11 | 杭州诺邦无纺股份有限公司 | High-softness nonwoven fabric and manufacturing method thereof |
| CN111663242A (en) * | 2020-05-29 | 2020-09-15 | 浙江宝仁和中科技有限公司 | Production process of water-soluble spunlace non-woven fabric |
-
2005
- 2005-03-04 JP JP2005061074A patent/JP2006241644A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010527738A (en) * | 2007-05-30 | 2010-08-19 | エスセーアー・ハイジーン・プロダクツ・アーベー | Nonwoven materials used as body facing sheets in absorbent articles |
| US8637728B2 (en) | 2007-05-30 | 2014-01-28 | Sca Hygiene Products Ab | Non-woven material for use as a body facing sheet in an absorbent article |
| JP2010279621A (en) * | 2009-06-05 | 2010-12-16 | Daio Paper Corp | Absorbent article |
| CN103437065A (en) * | 2013-08-07 | 2013-12-11 | 杭州诺邦无纺股份有限公司 | High-permeability mask nonwoven fabric and manufacturing method thereof |
| CN103437068A (en) * | 2013-08-07 | 2013-12-11 | 杭州诺邦无纺股份有限公司 | High-softness nonwoven fabric and manufacturing method thereof |
| CN111663242A (en) * | 2020-05-29 | 2020-09-15 | 浙江宝仁和中科技有限公司 | Production process of water-soluble spunlace non-woven fabric |
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