JP2014177719A - Spunlaced composite nonwoven fabric - Google Patents
Spunlaced composite nonwoven fabric Download PDFInfo
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- JP2014177719A JP2014177719A JP2013051834A JP2013051834A JP2014177719A JP 2014177719 A JP2014177719 A JP 2014177719A JP 2013051834 A JP2013051834 A JP 2013051834A JP 2013051834 A JP2013051834 A JP 2013051834A JP 2014177719 A JP2014177719 A JP 2014177719A
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- 239000004745 nonwoven fabric Substances 0.000 title claims abstract description 125
- 239000002131 composite material Substances 0.000 title claims abstract description 37
- 239000000835 fiber Substances 0.000 claims abstract description 223
- 239000000470 constituent Substances 0.000 claims abstract description 12
- 239000002344 surface layer Substances 0.000 claims abstract description 11
- 239000010410 layer Substances 0.000 claims abstract description 9
- 229920000728 polyester Polymers 0.000 claims description 35
- 238000002844 melting Methods 0.000 claims description 27
- 238000004049 embossing Methods 0.000 claims description 12
- 229920000642 polymer Polymers 0.000 claims description 11
- 230000008018 melting Effects 0.000 description 18
- 238000000034 method Methods 0.000 description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 12
- 238000002074 melt spinning Methods 0.000 description 9
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 6
- 229920001169 thermoplastic Polymers 0.000 description 6
- 229920001225 polyester resin Polymers 0.000 description 5
- 239000004645 polyester resin Substances 0.000 description 5
- 239000004744 fabric Substances 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 description 4
- 229920000742 Cotton Polymers 0.000 description 3
- 238000009987 spinning Methods 0.000 description 3
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 150000002009 diols Chemical class 0.000 description 2
- 238000000635 electron micrograph Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- -1 polyethylene terephthalate Polymers 0.000 description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- XGIAHMUOCFHQTI-UHFFFAOYSA-N Cl.Cl.Cl.Cl.CC Chemical compound Cl.Cl.Cl.Cl.CC XGIAHMUOCFHQTI-UHFFFAOYSA-N 0.000 description 1
- 229920000433 Lyocell Polymers 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 229920000297 Rayon Polymers 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- 238000003490 calendering Methods 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 239000003484 crystal nucleating agent Substances 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- BXKDSDJJOVIHMX-UHFFFAOYSA-N edrophonium chloride Chemical compound [Cl-].CC[N+](C)(C)C1=CC=CC(O)=C1 BXKDSDJJOVIHMX-UHFFFAOYSA-N 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002964 rayon Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Artificial Filaments (AREA)
- Multicomponent Fibers (AREA)
- Nonwoven Fabrics (AREA)
Abstract
Description
本発明は、水流交絡処理により構成繊維同士が一体化してなるスパンレース複合不織布に関するものである。 The present invention relates to a spunlace composite nonwoven fabric in which constituent fibers are integrated by a hydroentanglement process.
スパンレース不織布は、構成繊維として多くは短繊維が用いられている。短繊維は、繊維端を有し、長繊維のようにエンドレスではないため、水流の作用により容易に交絡するからである。また、スパンレース不織布は、構成繊維同士が水流の作用によって交絡して形態保持しているため、繊維間空隙が大きく、柔軟性に優れるという特徴がある。このため、直接、肌に触れる用途や拭き布として好適に用いられている。 In spunlace nonwoven fabric, short fibers are often used as constituent fibers. This is because the short fiber has a fiber end and is not endless like the long fiber, so that it is easily entangled by the action of the water flow. In addition, the spunlace nonwoven fabric is characterized in that the constituent fibers are entangled with each other by the action of the water flow and the shape is maintained, so that the inter-fiber gap is large and the flexibility is excellent. For this reason, it is suitably used as an application for directly touching the skin or as a wiping cloth.
しかし、柔軟性に優れるとは、言い換えると、布帛としてのコシに乏しいともいえる。また、構成繊維として主として短繊維を用いられることから、長繊維からなる不織布と比較して、機械的強度には劣っている。 However, it can be said that excellent flexibility is, in other words, poor stiffness as a fabric. In addition, since short fibers are mainly used as constituent fibers, they are inferior in mechanical strength compared to nonwoven fabrics made of long fibers.
特許文献１には、長繊維ウェブと短繊維ウェブとを積層した機械的強力に優れたスパンレース不織布が記載されている。特許文献１によれば、水流交絡処理前の長繊維ウェブに、低温かつ低圧の熱エンボス加工を施して繊維同士を擬似接着させ、次いで、この擬似接着が施された長繊維ウェブと短繊維ウェブとを積層した積層物に水流交絡を施し、水圧によって、長繊維同士の擬似接着を解除し、長繊維が動きやすい状態にして、すなわち、短繊維が絡みやすい状態として、交絡一体化した不織布を得るというものである。得られた不織布は、不織布内部に長繊維が堆積して存在しているため、短繊維のみからなるスパンレース不織布と比較すると、機械的強力は向上する。しかし、繊維同士が交絡のみによって一体化しているため、柔軟性には優れるものの、剛性やコシを有するものではなかった。 Patent Document 1 describes a spunlace nonwoven fabric excellent in mechanical strength in which a long fiber web and a short fiber web are laminated. According to Patent Document 1, a long fiber web before hydroentanglement treatment is subjected to low-temperature and low-pressure hot embossing to pseudo-bond the fibers, and then the long-fiber web and the short-fiber web subjected to the pseudo-bonding. Non-woven fabric that is entangled and integrated so that the long fibers can move easily, that is, the short fibers are easily entangled. Is to get. Since the obtained non-woven fabric has long fibers deposited inside the non-woven fabric, the mechanical strength is improved as compared with a spunlace non-woven fabric composed only of short fibers. However, since the fibers are integrated only by entanglement, they are excellent in flexibility, but do not have rigidity or stiffness.
本発明は、スパンレース不織布が有する肌触りの良好さや嵩高性は保持した状態で、かつコシや剛性を有するスパンレース不織布を提供することを課題とする。 It is an object of the present invention to provide a spunlace nonwoven fabric having a firmness and rigidity while maintaining good touch and bulkiness of the spunlace nonwoven fabric.
本発明者は、上記課題を達成する方法を検討したところ、水流交絡処理により長繊維不織布の有する熱接着が解除されないような剛性を有する特定の横断面形状の長繊維からなる不織布を用い、この長繊維不織布と短繊維ウェブとを積層して水流交絡処理を施すことにより、表面形態は、従来のスパンレース不織布が有する肌触りの良好さや嵩高性を保持しながら、布帛としてはハリ・コシを付与することができることを見出した。 The present inventor has examined a method for achieving the above-mentioned problem, and uses a nonwoven fabric composed of long fibers having a specific cross-sectional shape having such rigidity that thermal bonding of the long-fiber nonwoven fabric is not released by hydroentanglement treatment. By laminating long-fiber nonwoven fabric and short-fiber web and applying hydroentanglement treatment, the surface form gives elasticity and firmness while maintaining the good touch and bulkiness of conventional spunlace nonwoven fabric. Found that you can.
すなわち、本発明は、両表面層は短繊維ウェブが配され、前記短繊維ウェブ層の間に、長繊維不織布が配された複合不織布であって、該長繊維不織布を構成する長繊維の横断面形状が、略Ｙ字の下端で上下左右に連結した
形状（以下、「略Ｙ４形状」という。）であり、複合不織布は、水流交絡処理によって、両表面の短繊維ウェブ内の構成繊維同士がそれぞれ交絡一体化しているとともに、両表面の短繊維ウェブを構成する短繊維同士が、長繊維不織布の開孔を通して互いに絡むことにより両表面層の短繊維ウェブと長繊維不織布とが一体化していることを特徴とするスパンレース複合不織布を要旨とするものである。
That is, the present invention is a composite nonwoven fabric in which a short fiber web is disposed on both surface layers, and a long fiber nonwoven fabric is disposed between the short fiber web layers, and the crossing of the long fibers constituting the long fiber nonwoven fabric is performed. The surface shape is connected to the top, bottom, left and right at the lower end of the approximate Y
In the composite nonwoven fabric, the constituent fibers in the short fiber webs on both surfaces are entangled and integrated with each other by the hydroentanglement process, and the short fiber webs on both surfaces are integrated. The spunlace composite nonwoven fabric is characterized in that the short fiber web and the long fiber nonwoven fabric of both surface layers are integrated by entangled with each other through the openings of the long fiber nonwoven fabric. It is.
以下、本発明について詳細に説明する。 Hereinafter, the present invention will be described in detail.
本発明のスパンレース不織布は、短繊維ウェブ層の間に特定の長繊維不織布が配され、水流交絡処理によって交絡一体化している複合不織布である。 The spunlace nonwoven fabric of the present invention is a composite nonwoven fabric in which specific long fiber nonwoven fabrics are arranged between the short fiber web layers and are entangled and integrated by hydroentanglement treatment.
本発明における短繊維ウェブを構成する短繊維としては、水流交絡処理における水流の作用によって、繊維が動き、交絡することができるものであれば特に限定されず、その素材としては、木綿、レーヨンやリヨセル等のセルロース系繊維、ポリエステルやポリオレフィン等の熱可塑性繊維等が挙げられる。繊維長は、交絡性を考慮して、１０〜７０ｍｍ程度がよい。本発明の複合不織布において、両表面層に短繊維ウェブを配置する理由は、長繊維ウェブの場合、繊維はエンドレスであり繊維端を有しにくいために、多大なエネルギーの水流を施さなくては繊維同士が動きにくく十分に絡まないが、短繊維ウェブであると、特定の繊維長であるため繊維端を有し、水流交絡の作用により動きやすく良好に交絡して一体化することができるためである。なお、両表面に配する短繊維ウェブのそれぞれの目付は特に限定されず、用途に応じて適宜選択すればよいが、１５〜８０ｇ／ｍ２程度がよい。 The short fiber constituting the short fiber web in the present invention is not particularly limited as long as the fiber can move and entangle by the action of the water flow in the water entanglement treatment, and the material thereof is cotton, rayon, Examples thereof include cellulosic fibers such as lyocell, and thermoplastic fibers such as polyester and polyolefin. The fiber length is preferably about 10 to 70 mm in consideration of entanglement. In the composite nonwoven fabric of the present invention, the reason for disposing the short fiber webs on both surface layers is that in the case of long fiber webs, the fibers are endless and hardly have fiber ends, so a great amount of water flow must be applied. The fibers do not move easily and do not get entangled sufficiently, but if it is a short fiber web, it has a fiber end because it has a specific fiber length, and it can be easily entangled and integrated easily by the action of hydroentanglement. It is. In addition, each fabric weight of the short fiber web distribute | arranged to both surfaces is not specifically limited, Although what is necessary is just to select suitably according to a use, about 15-80 g / m < 2 > is good.
本発明における長繊維不織布は、その構成繊維の横断面形状に特徴を有するものである。この横断面形状は、図１に示すような略Ｙ字を四個持つものである。そして、略Ｙ字の下端１で上下左右に連結して、図２に示すような略Ｙ４形状となっている。また、中央の略＋字部５と、略＋字部５の各先端に連結された四個の略Ｖ字部６により、高剛性となっている。すなわち、六角形やＹ字等の単なる異形ではなく、剛性の高い略＋字部５と略Ｖ字部６の組み合わせによって、より高剛性となるのである。また、長繊維の異型度が大きいことや、繊度も１０デシテックス以上と大きいことから、一定面積中の繊維が存在しない箇所の比率、すなわち二次元的に見たときに繊維が存在しない面積比率が大きく、また、繊維が存在しない箇所（長繊維不織布の孔）の個々の面積が大きくなる。繊維が存在しない面積比率が大きく、かつ繊維が存在しない箇所（長繊維不織布の孔）の個々の面積が大きいことにより、短繊維ウェブと積層して水流交絡処理を施した際、短繊維は、長繊維不織布を構成する単繊維に絡み付きやすくなる。また、さらには、長繊維不織布における繊維が存在しない箇所（孔）において、表裏面に配した短繊維同士がそれぞれ絡みやすくなると共に、複雑に交差する長繊維において、長繊維表面に断面形状に起因する凸部が存在することにより、長繊維間を通じて絡み合っている短繊維群の交絡が解け難くなり短繊維の脱落を防いでいる。一般的なスパンボンド不織布（単糸繊度が１０デシテックス未満のもの）においても、目付が小さい（２０ｇ／ｍ２未満程度）場合は多少の開孔も存在するが、２０ｇ／ｍ２を超えると、繊維が存在しない箇所の比率やその箇所の面積は極端に小さくなるため、このような現象が生じにくい。本発明においては、目付は２０〜６０ｇ／ｍ２の範囲が好ましく、単糸繊度にもよるが、より好ましくは２０〜４０ｇ／ｍ２である。 The long fiber nonwoven fabric in the present invention is characterized by the cross-sectional shape of its constituent fibers. This cross-sectional shape has four substantially Y-characters as shown in FIG. And it is connected to the upper and lower sides and the right and left at the lower end 1 of a substantially Y shape, and has a substantially Y4 shape as shown in FIG. Moreover, it is highly rigid by the substantially + character part 5 of the center, and the four substantially V-shaped parts 6 connected with each front-end | tip of the substantially + character part 5. In other words, it is not a simple shape such as a hexagon or a Y-shape, but a higher rigidity is achieved by a combination of the substantially + -shaped portion 5 and the substantially V-shaped portion 6 having high rigidity. Further, since the degree of atypicality of the long fibers is large and the fineness is as large as 10 dtex or more, the ratio of the portions where the fibers in a certain area do not exist, that is, the area ratio where the fibers do not exist when viewed two-dimensionally. Each area is large and the area where no fiber is present (holes in the long-fiber nonwoven fabric) increases. When the area ratio in which fibers are not present is large and the individual areas of the portions where the fibers are not present (holes of the long fiber nonwoven fabric) is large, when the hydroentanglement treatment is performed by laminating with the short fiber web, It becomes easy to entangle with the single fiber which comprises a long-fiber nonwoven fabric. Furthermore, in the portion (hole) where the fiber in the long fiber nonwoven fabric does not exist, the short fibers arranged on the front and back surfaces are easily entangled with each other, and in the long fiber that intersects in a complicated manner, the surface of the long fiber is caused by the cross-sectional shape. Due to the presence of the convex portions, the entanglement of the short fiber group intertwined through the long fibers becomes difficult to be unraveled, and the short fibers are prevented from falling off. Even in a general spunbonded nonwoven fabric (single yarn fineness less than 10 dtex), when the basis weight is small (less than about 20 g / m 2 ), there are some openings, but when it exceeds 20 g / m 2 , Since the ratio of the area where no fiber is present and the area of the area are extremely small, such a phenomenon is unlikely to occur. In the present invention, the basis weight is preferably in the range of 20 to 60 g / m 2, depending on the fineness, more preferably 20 to 40 g / m 2.
本発明に用いる糸状断面が略Ｙ４形状の長繊維から構成される長繊維不織布について、以下に説明する。上記したように、長繊維の横断面形状に特徴を有するものであるが、基本的には、本件出願人が提案している特願２０１１−２１６３７７号に記載した長繊維不織布を用いるとよい。 The long fiber nonwoven fabric in which the filamentous cross section used in the present invention is composed of long fibers having a substantially Y4 shape will be described below. As described above, the long fiber non-woven fabric described in Japanese Patent Application No. 2011-216377 proposed by the present applicant may be used, although the cross-sectional shape of the long fiber is characteristic.
長繊維不織布は、剛性および形態安定性の観点から、構成繊維同士が熱接着により一体化してなるものが好ましいことから、熱可塑性重合体によって構成されるが、機械的強度に優れ、剛性が付与できることから、ポリエステル系重合体であることが好ましい。ポリエステル系重合体により構成される長繊維（ポリエステル長繊維）は、一種類のポリエステルからなるものでもよいが、低融点ポリエステルと高融点ポリエステルとを組み合わせるのが好ましい。すなわち、ポリエステル長繊維の横断面形状の略Ｖ字部６が低融点ポリエステルで形成され、略＋字部５が高融点ポリエステルで形成された複合型するのが好ましい。複合型ポリエステル長繊維を集積した後、低融点ポリエステルを軟化又は溶融させた後、固化させることにより、ポリエステル長繊維相互間が低融点ポリエステルによって融着された不織布が得られるからである。 From the viewpoint of rigidity and shape stability, the long fiber nonwoven fabric is preferably composed of thermoplastic polymers because the constituent fibers are integrated by thermal bonding, but it is composed of a thermoplastic polymer, but has excellent mechanical strength and imparts rigidity. Since it can do, it is preferable that it is a polyester-type polymer. The long fiber (polyester long fiber) composed of a polyester polymer may be composed of one kind of polyester, but it is preferable to combine a low-melting polyester and a high-melting polyester. That is, it is preferable to use a composite type in which the substantially V-shaped portion 6 of the cross-sectional shape of the polyester long fiber is formed of low-melting polyester and the substantially + -shaped portion 5 is formed of high-melting polyester. This is because, after the composite type polyester long fibers are accumulated, the low melting point polyester is softened or melted and then solidified to obtain a nonwoven fabric in which the polyester long fibers are fused with each other by the low melting point polyester.
長繊維不織布は、溶融紡糸する際に用いるノズル孔を変更する以外は、従来公知の方法で得られる。すなわち、熱可塑性重合体を溶融紡糸して得られた長繊維を集積して長繊維不織布を製造する方法において、溶融紡糸する際に用いるノズル孔の形状が、Ｙ字の下端で上下左右に連結し、かつ、隣り合うＹ字の／同士及び＼同士が平行である形状（以下、「Ｙ４形」という。）のものを用いるというものである。 The long fiber nonwoven fabric can be obtained by a conventionally known method except that the nozzle hole used for melt spinning is changed. That is, in the method for producing a long-fiber nonwoven fabric by accumulating long fibers obtained by melt spinning a thermoplastic polymer, the shape of the nozzle hole used for melt spinning is connected vertically and horizontally at the lower end of the Y-shape. In addition, adjacent Y-shaped // and \ -shaped in parallel (hereinafter referred to as “Y4 shape”) are used.
このノズル孔は、図３に示すＹ字を四個持つものである。そして、Ｙ字の下端７で上下左右に連結して、図４に示すＹ４形となっている。このＹ４形は、隣り合うＹ字の／８，８同士が平行であり、また＼９，９同士が平行となっている。かかるＹ４形のノズル孔にポリエステル樹脂を供給して溶融紡糸することにより、横断面が略Ｙ４形状のポリエステル長繊維を得ることができるのである。特に、隣り合うＹ字の／８，８同士及び＼９，９同士が平行となっていることにより、四個の凹部２を持つポリエステル長繊維を得ることができる。また、略＋字部５と、その各々の先端に設けられた略Ｖ字部６とを持つ長繊維を得ることができる。 This nozzle hole has four Y characters shown in FIG. And it connects with the upper and lower sides and right and left by the lower end 7 of Y character, and becomes Y4 form shown in FIG. In this Y4 form, adjacent Y-shaped / 8s and 8s are parallel to each other, and \ 9,9s are parallel to each other. By supplying a polyester resin to the Y4 nozzle hole and melt spinning, a polyester continuous fiber having a substantially Y4 cross section can be obtained. In particular, polyester long fibers having four concave portions 2 can be obtained by making adjacent Y-shaped / 8,8 and \ 9,9 parallel to each other. Moreover, the long fiber which has the substantially + character part 5 and the substantially V-shaped part 6 provided in each front-end | tip can be obtained.
Ｙ４形のノズル孔に供給する熱可塑性重合体は、一種類であってもよいし、二種類であってもよい。特に、低融点ポリエステル樹脂と高融点ポリエステル樹脂の二種類を用いるのが好ましい。すなわち、低融点ポリエステル樹脂をＹ４形のＶ字部１０に供給し、高融点ポリエステル樹脂をＹ４形の＋字部１１に供給するのが好ましい。かかる供給態様で溶融紡糸することにより、略Ｖ字部６が低融点ポリエステルで形成され、略＋字部５が高融点ポリエステルで形成された複合型ポリエステル長繊維が得られる。 One type or two types of thermoplastic polymers may be supplied to the Y4 type nozzle hole. In particular, it is preferable to use two types, a low melting point polyester resin and a high melting point polyester resin. That is, it is preferable to supply the low melting point polyester resin to the Y-shaped V-shaped portion 10 and supply the high melting point polyester resin to the Y-shaped + shaped portion 11. By melt spinning in such a supply mode, a composite type polyester continuous fiber in which the approximately V-shaped portion 6 is formed of low-melting polyester and the approximately + -shaped portion 5 is formed of high-melting polyester is obtained.
長繊維を得た後、これを集積して一般的に繊維ウェブを形成する。そして、繊維ウェブを少なくとも加熱することにより、長繊維を構成する熱可塑性重合体（二種の重合体によって構成されるときは、低融点の重合体）を軟化又は溶融させ、冷却して固化させることにより、長繊維相互間を熱接着して長繊維不織布を得る。熱接着処理は、熱エンボス加工によって形成される部分的に熱圧着することにより熱接着しているものであっても、また、熱カレンダー加工による熱処理により熱接着しているもの、熱風処理により熱接着しているものでもよい。また、これらの方法を併用したものでもよい。本発明においては、長繊維不織布の形態安定性の点から、部分的に熱と圧力とを付加することにより熱圧着する熱エンボス加工によるものであることが好ましい。用いるエンボスロールの圧着面積率（エンボスロールの凸部の面積率）は、１５〜４５％がよい。なお、本発明に用いられる長繊維不織布における熱接着は、水流交絡の処理によっても解除されない。 After the long fibers are obtained, they are generally collected to form a fiber web. Then, at least the fiber web is heated to soften or melt the thermoplastic polymer constituting the long fibers (or the low melting point polymer when constituted by two kinds of polymers), and to cool and solidify. As a result, the long fibers are thermally bonded to each other to obtain a long fiber nonwoven fabric. The thermal bonding process can be performed by partial thermocompression bonding that is formed by hot embossing, heat-bonded by thermal calendering, or heated by hot air treatment. It may be bonded. Moreover, what combined these methods may be used. In the present invention, from the viewpoint of the shape stability of the long-fiber nonwoven fabric, it is preferable that the heat-embossing is performed by thermocompression bonding by partially applying heat and pressure. The pressure-bonding area ratio of the embossing roll to be used (area ratio of the convex part of the embossing roll) is preferably 15 to 45%. In addition, the heat bonding in the long-fiber nonwoven fabric used in the present invention is not canceled even by the hydroentanglement process.
本発明において長繊維不織布の構成繊維の単糸繊度は、剛性を考慮して１０デシテックス以上とする。また、不織布の目付にもよるが、長繊維不織布において二次元的にみたときに繊維が存在しない箇所（孔）の面積比率がより大きくなることから、単糸繊度は１５デシテックス以上であることが好ましい。単糸繊度は大きいほど、剛性に優れる傾向にあるが、長繊維不織布を得る際に、延伸可紡性を考慮すれば上限は３０デシテックスとする。 In the present invention, the single yarn fineness of the constituent fibers of the long fiber nonwoven fabric is set to 10 dtex or more in consideration of rigidity. Further, although depending on the basis weight of the non-woven fabric, the area ratio of the portions (holes) where no fiber exists when viewed two-dimensionally in the long-fiber non-woven fabric is larger, and therefore the single yarn fineness may be 15 dtex or more. preferable. The greater the single yarn fineness, the better the rigidity. However, when obtaining a long-fiber nonwoven fabric, the upper limit is set to 30 dtex in consideration of drawability.
本発明のスパンレース複合不織布は、上記した略Ｙ４形状断面の長繊維からなる不織布の両面に短繊維ウェブが積層され、短繊維ウェブの構成繊維同士は水流交絡処理により交絡一体化しているとともに、短繊維ウェブ間の短繊維同士が相互に交絡する。また、一部の短繊維は、長繊維不織布を構成する長繊維にも絡む。 In the spunlace composite nonwoven fabric of the present invention, short fiber webs are laminated on both sides of the nonwoven fabric composed of long fibers having a substantially Y4 cross section, and the constituent fibers of the short fiber webs are entangled and integrated by hydroentanglement treatment. The short fibers between the short fiber webs are entangled with each other. Some of the short fibers are also entangled with the long fibers constituting the long fiber nonwoven fabric.
水流交絡処理は、公知の方法により行えばよい。まず、短繊維ウェブ／長繊維不織布／短繊維ウェブの順に積層し、この積層物をメッシュ状支持体に担持する。次いで、積層物側から高圧水流を施し、短繊維ウェブ内の構成繊維同士および短繊維ウェブ間での繊維同士を三次元的に交絡させて積層一体化させる。この高圧水流は、孔径０．０５〜２．０ｍｍの噴射孔が、噴射孔間隔０．０５〜１０ｍｍで一列又は複数列配置されている噴射装置を用い、水を噴射孔から１．５〜３０ＭＰａの圧力で噴射して得られるものである。そうすると、高圧水流はウェブに衝突して、短繊維に運動エネルギーを与える。この運動エネルギーにより、短繊維ウェブ内の短繊維同士あるいは短繊維ウェブ間の短繊維同士が相互に交絡し、一体化する。また、短繊維は、長繊維不織布を構成する長繊維に絡む。なお、この交絡処理によって、長繊維不織布の熱融着は解除されることはない。 The hydroentanglement process may be performed by a known method. First, a short fiber web / long fiber non-woven fabric / short fiber web are laminated in this order, and this laminate is supported on a mesh-like support. Next, a high-pressure water flow is applied from the laminate side, and the constituent fibers in the short fiber web and the fibers between the short fiber webs are three-dimensionally entangled and laminated and integrated. This high-pressure water flow uses an injection device in which injection holes having a hole diameter of 0.05 to 2.0 mm are arranged in one or more rows with an injection hole interval of 0.05 to 10 mm, and water is supplied from the injection holes to 1.5 to 30 MPa. It is obtained by spraying at a pressure of The high pressure water stream then impinges on the web and imparts kinetic energy to the short fibers. By this kinetic energy, the short fibers in the short fiber web or the short fibers between the short fiber webs are entangled and integrated with each other. Moreover, a short fiber is entangled with the long fiber which comprises a long-fiber nonwoven fabric. Note that the thermal fusion of the long-fiber nonwoven fabric is not released by this entanglement process.
本発明のスパンレース複合不織布は、短繊維ウェブの目付が大きくない場合（８０ｇ／ｍ２以下程度）に、表面が若干の凹凸を有する絞り調の独特の外観を呈する。これは、
中層の長繊維不織布が高繊度の略Ｙ４形状断面の長繊維によって構成されているため、長繊維不織布に繊維が存在しない箇所があり、かつその面積および面積率が大きくなり、また、長繊維(略Ｙ４断面形状糸)の外接円の周長が大きいことに起因して、繊維が存在する箇所と繊維が存在しない箇所とにおいて、厚み差が大きくなる（凹凸が大きい）ためと考えられる。長繊維不織布の目付は３０〜６０ｇ／ｍ２、長繊維の繊度は１２デシテックス以上とすることにより、このような表面が絞り調の外観を良好に得ることができる。
The spunlace composite nonwoven fabric of the present invention exhibits a unique appearance of a drawing tone with a slight unevenness on the surface when the basis weight of the short fiber web is not large (about 80 g / m 2 or less). this is,
Since the long-layer nonwoven fabric of the middle layer is composed of long fibers having a high fineness and a substantially Y4 cross section, there are portions where the fibers are not present in the long-fiber nonwoven fabric, and the area and area ratio thereof are increased. This is probably because the difference in thickness is large (the unevenness is large) between the location where the fiber is present and the location where the fiber is not present due to the large circumference of the circumscribed circle of the (substantially Y4 cross-sectional shape yarn). By making the basis weight of the long-fiber nonwoven fabric 30 to 60 g / m 2 and the fineness of the long fiber to be 12 dtex or more, such a surface can obtain a finely drawn appearance.
得られるスパンレース複合不織布は、適度なハリ・コシを有するとともに、手で掴んだときのフィット性が良好で掴みやすいため、例えば、ワイパーとして好適なものとなる。ワイパーとして適用する場合は、ウェットタイプでもドライタイプでも、両者ともに良好に適用できる。また、中間層の長繊維不織布を構成する繊維は、横断面に多数の凹部を有しており、この凹部には塵埃が補足しやすいため、フィルター材としての好適に用いることもできる。 The obtained spunlace composite nonwoven fabric has an appropriate elasticity and stiffness, has good fit when gripped by hand, and is easy to grip, and thus is suitable as a wiper, for example. When applied as a wiper, both wet and dry types can be applied successfully. Further, the fibers constituting the long-fiber nonwoven fabric of the intermediate layer have a large number of recesses in the cross section, and the recesses can be easily captured by dust, and therefore can be suitably used as a filter material.
本発明のスパンレース複合不織布は、両表面層に短繊維ウェブが配され、この短繊維ウェブ層の間に、特定の長繊維不織布が配されて水流交絡により一体化したものであり、長繊維不織布は、略Ｙ４顔面糸から構成され、略Ｙ４断面糸同士は熱接着していることにより形態を保持してなるものである。短繊維ウェブの間に配された長繊維不織布が、高繊度の略Ｙ４断面糸から構成されるため、繊維の外接円の周長が大きく、長繊維が存在しない箇所の面積を大きくすることができる。したがって、両表面層の短繊維ウェブを構成する短繊維同士が、長繊維不織布を通じて良好に絡む。また、長繊維不織布が有する熱接着を解除しなくとも、短繊維ウェブ間が良好に絡むため、長繊維不織布が本来有する剛性や引裂強力を維持した状態で、複合不織布を得ることができる。したがって、本発明のスパンレース複合不織布によれば、不織布表面は、短繊維が交絡しているものであり、良好な肌触り性や嵩高性を有しながら、不織布の中間層には、特定の長繊維不織布が配されているため、布帛としては、ハリ・コシを有する複合不織布を提供することができる。 The spunlace composite nonwoven fabric of the present invention has a short fiber web disposed on both surface layers, and a specific long fiber nonwoven fabric is disposed between the short fiber web layers and integrated by hydroentanglement. The non-woven fabric is composed of substantially Y4 face yarns, and the substantially Y4 cross-sectional yarns are heat bonded to each other to maintain the form. Since the long-fiber nonwoven fabric arranged between the short-fiber webs is composed of high-fineness approximately Y4 cross-sectional yarns, the circumference of the circumscribed circle of the fibers is large, and the area of the portion where no long fibers are present may be increased. it can. Therefore, the short fibers constituting the short fiber webs of both surface layers are entangled well through the long fiber nonwoven fabric. Moreover, even if it does not cancel | release the heat bond which a long fiber nonwoven fabric has, since a short fiber web is entangled favorably, a composite nonwoven fabric can be obtained in the state which maintained the rigidity and tear strength which a long fiber nonwoven fabric originally has. Therefore, according to the spunlace composite nonwoven fabric of the present invention, the nonwoven fabric surface is entangled with short fibers, and while having good touch and bulkiness, the intermediate layer of the nonwoven fabric has a specific length. Since the fiber nonwoven fabric is arranged, a composite nonwoven fabric having elasticity and stiffness can be provided as the fabric.
以下、実施例により本発明を具体的に説明するが、本発明はこれらの実施例に限定されるものではない。なお、実施例における各特性値は、以下のようにして求めた。
（１）ポリエステルの極限粘度［η］；フェノールと四塩化エタンとの等質量比の混合溶媒１００ｃｃに試料０．５ｇを溶解し、測定した。
（２） 融点（℃）；パーキンエルマー社製の示差走査熱量計ＤＳＣ−７型を用い、昇温速度２０℃／分で測定した。
（３）引裂強力（Ｎ）；ＪＩＳ Ｌ １９０６ 引裂き強さ ペンジュラム法により、不織布のＭＤ方向の引裂き強力を測定した。
（４）引張強力（Ｎ）；ＪＩＳ Ｌ １０９６−８．１２．１ Ｂ法 グラブ法に準じて、引張試験機（東洋ボールドウイン社製テンシロンＲＴＭ−５００型）を用いて、幅１００ｍｍ、長さ１５０ｍｍの試験片を、把持間隔７６ｍｍ、引張速度３００ｍｍ／分の条件で測定し、試料５点の平均値を求め、引張強力とした。なお、引張強力については、不織布のＣＤ方向（機械方向に直交する方向）のみ求めた。
（５）長繊維不織布を構成する長繊維の繊度（ｄｔｅｘ）；温度２０℃、湿度６０％の環境下で１昼夜保管した長さ１．８ｍの試料（略Ｙ４断面糸）５点の質量について上皿天秤（Ｍｅｔｔｌｅｒ ＡＥ５０）を用いて測定し、その平均値より繊度を求めた。
EXAMPLES Hereinafter, although an Example demonstrates this invention concretely, this invention is not limited to these Examples. In addition, each characteristic value in an Example was calculated | required as follows.
(1) Intrinsic viscosity [η] of polyester: 0.5 g of a sample was dissolved in 100 cc of a mixed solvent having an equal mass ratio of phenol and ethane tetrachloride and measured.
(2) Melting point (° C.): Measured at a heating rate of 20 ° C./min using a differential scanning calorimeter DSC-7 manufactured by PerkinElmer.
(3) Tear strength (N): JIS L 1906 Tear strength The tear strength in the MD direction of the nonwoven fabric was measured by the pendulum method.
(4) Tensile strength (N): JIS L 1096-8.12.1 B method Using a tensile tester (Tensilon RTM-500, manufactured by Toyo Baldwin Co.) according to the grab method, width 100 mm, length A 150 mm test piece was measured under the conditions of a gripping interval of 76 mm and a tensile speed of 300 mm / min, and an average value of five samples was obtained to obtain a tensile strength. In addition, about the tensile strength, it calculated | required only the CD direction (direction orthogonal to a machine direction) of a nonwoven fabric.
(5) Fineness (dtex) of long fibers constituting the long-fiber nonwoven fabric: About the mass of 5 points of a sample (substantially Y4 cross-section yarn) of 1.8 m in length that is stored for one day in an environment of temperature 20 ° C. and humidity 60% It measured using the top plate balance (Mettler AE50), and calculated | required the fineness from the average value.
［長繊維不織布の準備］
長繊維不織布の製造例１
ジカルボン酸成分としてテレフタル酸（ＴＰＡ）９２ｍｏｌ％及びイソフタール酸（ＩＰＡ）８ｍｏｌ％を用い、ジオール成分としてエチレングリコール（ＥＧ）１００ｍｏｌ％を用いて共重合し、低融点ポリエステル（相対粘度〔ηｒｅｌ〕１．４４、融点２３０℃）を得た。この低融点ポリエステルに、結晶核剤として４．０質量％の酸化チタンを添加して、低融点ポリエステル重合体を準備した。一方、ジカルボン酸成分としてテレフタル酸（ＴＰＡ）１００ｍｏｌ％とジオール成分としてエチレングリコール（ＥＧ）１００ｍｏｌ％を用いて共重合し、高融点ポリエステル重合体（ポリエチレンテレフタレート、相対粘度〔ηｒｅｌ〕１．３８、融点２６０℃）を準備した。そして、図４に示したノズル孔を用い、Ｖ字部に低融点ポリエステル重合体を供給し、＋字部に高融点ポリエステル重合体を供給して、紡糸温度２８５℃、単孔吐出量８．３３ｇ／分で溶融紡糸した。なお、低融点ポリエステル重合体の供給量と高融点ポリエステル重合体の供給量の重量比は、１：２であった。
ノズル孔から排出されたフィラメント群を、２ｍ下のエアーサッカー入口に導入し、複合型ポリエステル長繊維の繊度が１７デシテックスとなるように牽引した。エアーサッカー出口から排出された複合型ポリエステル長繊維群を開繊装置にて開繊した後、移動するネット製コンベア上に集積し、繊維ウェブを得た。この繊維ウェブを、表面温度が２１３℃のエンボスロール（各エンボス凸部先端の面積は０．７ｍｍ２で、ロール全面積に対するエンボス凸部の占める面積率は１５％）とフラットロールからなる熱融着装置に導入し、両ロール間の線圧３００Ｎ／ｃｍの条件で熱融着して、目付３０ｇ／ｍ２のポリエステル長繊維不織布を得た。
[Preparation of long fiber nonwoven fabric]
Production example 1 of long fiber nonwoven fabric
Copolymerization was carried out using terephthalic acid (TPA) 92 mol% and isophthalic acid (IPA) 8 mol% as the dicarboxylic acid component, and ethylene glycol (EG) 100 mol% as the diol component, and a low-melting polyester (relative viscosity [ηrel] 1. 44, melting point 230 ° C.). To this low melting point polyester, 4.0% by mass of titanium oxide was added as a crystal nucleating agent to prepare a low melting point polyester polymer. On the other hand, 100 mol% of terephthalic acid (TPA) as a dicarboxylic acid component and 100 mol% of ethylene glycol (EG) as a diol component were copolymerized to obtain a high melting point polyester polymer (polyethylene terephthalate, relative viscosity [ηrel] 1.38, melting point). 260 ° C.). Then, using the nozzle holes shown in FIG. 4, a low melting point polyester polymer is supplied to the V-shaped part, and a high melting point polyester polymer is supplied to the + -shaped part, and the spinning temperature is 285 ° C. and the single hole discharge amount is 8. Melt spinning was performed at 33 g / min. In addition, the weight ratio of the supply amount of the low melting point polyester polymer and the supply amount of the high melting point polyester polymer was 1: 2.
The filament group discharged from the nozzle hole was introduced into the air soccer entrance 2 m below and pulled so that the fineness of the composite polyester long fiber was 17 dtex. The composite polyester long fiber group discharged from the air soccer exit was opened with a fiber opening device and then collected on a moving net conveyor to obtain a fiber web. This fiber web is heat-fused with a flat roll and an embossing roll having a surface temperature of 213 ° C. (the area at the tip of each embossing protrusion is 0.7 mm 2 and the area ratio of the embossing protrusion relative to the total area of the roll is 15%). The polyester continuous fiber nonwoven fabric having a basis weight of 30 g / m 2 was obtained by introducing into a dressing apparatus and heat-sealing under the condition of a linear pressure of 300 N / cm between both rolls.
長繊維不織布の製造例２
融点２６０℃、極限粘度［η］０．７０ポリエチレンテレフタレートを準備し、公知の溶融紡糸装置を用い、繊維断面が丸断面となる孔数３０ホールの紡糸口金より、紡糸温度２８０℃で溶融紡出した。紡糸口金とエアーサッカーまでの距離は１４０ｃｍに設定し、紡出糸条をエアーサッカーに導入した。このとき、ひとつのエアーサッカーに３０本の単繊維を導入した。そして、エアーサッカーにて、繊度が３デシテックスとなるように紡糸速度５０００ｍ／分で牽引し、紡出糸条は、開繊装置で個々の単繊維がばらばらになるように開繊させた後、コンベアネット上に捕集・堆積させて、長繊維ウェブとした。得られたウエブを、エンボスロール（エンボスロールの凸部の面積０．７ｍｍ２、面積率１５％）とフラットロールとからなる熱エンボス装置に導き、両ロールの表面温度２３５℃、線圧４９０Ｎ／ｃｍの条件下で部分的に熱圧接処理を施し、目付３０ｇ／ｍ２の長繊維不織布を得た。
Production example 2 of long fiber nonwoven fabric
Prepare melting point 260 ° C, intrinsic viscosity [η] 0.70 polyethylene terephthalate, and melt spinning at a spinning temperature of 280 ° C from a spinneret with 30 holes with a round fiber cross section using a known melt spinning device. did. The distance from the spinneret to the air soccer was set to 140 cm, and the spun yarn was introduced into the air soccer. At this time, 30 single fibers were introduced into one air soccer. And in air soccer, after pulling at a spinning speed of 5000 m / min so that the fineness becomes 3 dtex, the spun yarn is opened so that individual single fibers are separated by a fiber opening device, A long fiber web was obtained by collecting and depositing on a conveyor net. The obtained web was led to a heat embossing device composed of an embossing roll (the area of the convex portion of the embossing roll was 0.7 mm 2 and an area ratio of 15%) and a flat roll, and the surface temperature of both rolls was 235 ° C., the linear pressure was 490 N / A heat-welding treatment was partially applied under the conditions of cm to obtain a long fiber nonwoven fabric having a basis weight of 30 g / m 2 .
［複合不織布の製造方法］
実施例１
精錬・漂白した木綿（繊維長 約２５〜３５ｍｍ）を用いて、大和機工株式会社製のサンプルローラーカード機にて目付３８ｇ／ｍ２の短繊維ウェブを作成した。次に、長繊維不織布として、上製造例１で得られた略Ｙ４断面糸からなる長繊維不織布を準備した。短繊維ウェブ／長繊維不織布／短繊維ウェブの順に積層し、この積層物を１００メッシュのステンレスネット上に載せ、ノズル径０．１３ｍｍ、水圧８．３３ＭＰａの水圧で積層物に水を噴射した。次いで、積層物を反転させて、他面より同様の水圧で水を噴射して、水流交絡処理を施した。その後、乾燥処理を行い、本発明のスパンレース複合不織布を得た。図５は、得られたスパンレース複合不織布の横断面を観察した電子顕微鏡写真である。
[Production method of composite nonwoven fabric]
Example 1
Using a smelted and bleached cotton (fiber length: about 25 to 35 mm), a short fiber web having a basis weight of 38 g / m 2 was prepared using a sample roller card machine manufactured by Yamato Kiko Co., Ltd. Next, the long fiber nonwoven fabric which consists of the substantially Y4 cross-section thread | yarn obtained by the manufacture example 1 was prepared as a long fiber nonwoven fabric. Short fiber web / long fiber nonwoven fabric / short fiber web were laminated in this order, this laminate was placed on a 100-mesh stainless steel net, and water was sprayed onto the laminate with a nozzle diameter of 0.13 mm and a water pressure of 8.33 MPa. Next, the laminate was inverted, and water was jetted from the other surface at the same water pressure to perform hydroentanglement treatment. Then, the drying process was performed and the spunlace composite nonwoven fabric of this invention was obtained. FIG. 5 is an electron micrograph observing a cross section of the obtained spunlace composite nonwoven fabric.
得られたスパンレース複合不織布のＭＤ方向の引裂強力は７．１Ｎ、ＣＤ方向の引張強力は５８Ｎであり、優れた機械的強力を示した。また、剛性に優れた長繊維不織布を中央に配し、両表層を木綿を配したため、該スパンレース複合不織布の表層は柔らかく風合いが優れていると共に、縦方向、横方向、斜め方向に引っ張った際にも形態が変形しにくく、良好な形態安定性を有し、不織布自体は反発性（コシ・ハリ）を有し、剛性に優れたものであった。 The spunlace composite nonwoven fabric obtained had a tear strength in the MD direction of 7.1 N and a tensile strength in the CD direction of 58 N, indicating excellent mechanical strength. In addition, a long fiber nonwoven fabric with excellent rigidity is placed in the center and cotton is placed on both surface layers, so that the surface layer of the spunlace composite nonwoven fabric is soft and excellent in texture, and is pulled in the vertical, horizontal and diagonal directions. In some cases, the form was not easily deformed and had good form stability, and the nonwoven fabric itself had resilience (stiffness and firmness) and was excellent in rigidity.
比較例１
実施例１において、長繊維不織布を用いなかったこと、５２ｇ／ｍ２の短繊維ウェブ２枚を積層して水流交絡処理を施したこと以外は、実施例１と同様にしてスパンレース不織布を得た。
得られたスパンレース不織布のＭＤ方向の引裂強力は４．５Ｎ、ＣＤ方向の引張強力は４０Ｎであり、実施例のスパンレース複合不織布に較べると、剛性およびコシがなく、縦方向、横方向、斜め方向に引っ張った際にも形態が変形しやすく、形態安定性に劣るものであった。
Comparative Example 1
In Example 1, a spunlace nonwoven fabric was obtained in the same manner as in Example 1 except that the long fiber nonwoven fabric was not used and two 52 g / m 2 short fiber webs were laminated and subjected to hydroentanglement treatment. It was.
The spunlace nonwoven fabric obtained had a tear strength in the MD direction of 4.5 N and a tensile strength in the CD direction of 40 N, which is less rigid and stiff than the spunlace composite nonwoven fabric of the Examples, in the machine direction, the transverse direction, Even when pulled in an oblique direction, the form was easily deformed and the form stability was poor.
比較例２
実施例１において、長繊維不織布として上製造例２で得られたものを用いたこと以外は実施例１と同様にして水流交絡処理を施したが、長繊維不織布の両面の短繊維ウェブを構成する短繊維は、それぞれ交絡したが、長繊維不織布への絡み付きはなく、容易に３枚（２枚の短繊維不織布と長繊維不織布）に剥がれてしまい、複合化することはできなかった。
Comparative Example 2
In Example 1, the hydroentanglement treatment was performed in the same manner as in Example 1 except that the long fiber nonwoven fabric obtained in the above Production Example 2 was used, but the short fiber webs on both sides of the long fiber nonwoven fabric were configured. The short fibers to be entangled with each other were not entangled with the long-fiber non-woven fabric and easily peeled off into three sheets (two short-fiber non-woven fabric and long-fiber non-woven fabric), and could not be combined.
１ ポリエステル長繊維横断面形状である略Ｙ４形状の一つの略Ｙ字の下端
２ 略Ｙ４形状で形成された凹部
３ 略Ｙ４形状で形成された凸部
４ 略Ｙ４形状で形成された小凹部
５ 略Ｙ４形状中の略十字部
６ 略Ｙ４形状中の略Ｖ字部
７ 溶融紡糸する際のノズル孔の形状であるＹ４形状の一つのＹ字の下端
８ Ｙ字の／
９ Ｙ字の＼
１０ Ｙ４形のＶ字部
１１ Ｙ４形の十字部
DESCRIPTION OF SYMBOLS 1 One substantially Y-shaped lower end of the substantially Y4 shape which is the cross-sectional shape of polyester long fiber 2 The recessed part formed in the substantially Y4 shape 3 The convex part 4 formed in the substantially Y4 shape The small recessed part 5 formed in the substantially Y4 shape Approximate cross section 6 in approximately Y4 shape Approximate V-shaped section 7 in approximately Y4 shape One Y-shaped lower end 8 of Y4 shape, which is the shape of a nozzle hole for melt spinning
9 Y-shaped \
10 Y4 V-shaped part 11 Y4 cross
Claims (5)
形状（以下、「略Ｙ４形状」という。）であり、その単糸繊度が１０デシテックス以上であり、複合不織布は、水流交絡処理によって、両表面の短繊維ウェブ内の構成繊維同士がそれぞれ交絡一体化しているとともに、両表面の短繊維ウェブを構成する短繊維同士が、長繊維不織布の孔を通して互いに絡むことにより両表面層の短繊維ウェブと長繊維不織布とが一体化していることを特徴とするスパンレース複合不織布。 Both surface layers are composite nonwoven fabrics in which a short fiber web is arranged, and a long fiber nonwoven fabric is arranged between the short fiber web layers, and the cross-sectional shape of the long fibers constituting the long fiber nonwoven fabric is substantially Y Connected vertically and horizontally at the bottom of the character
It has a shape (hereinafter referred to as “substantially Y4 shape”), the single yarn fineness is 10 dtex or more, and in the composite nonwoven fabric, the constituent fibers in the short fiber webs on both surfaces are entangled integrally by hydroentanglement treatment. And the short fibers constituting the short fiber webs on both surfaces are entangled with each other through the holes of the long fiber nonwoven fabric, so that the short fiber webs on both surface layers and the long fiber nonwoven fabric are integrated. Spunlace composite nonwoven fabric.
A wiper using the spunlace composite nonwoven fabric according to claim 1.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2016089314A (en) * | 2014-11-10 | 2016-05-23 | ユニチカ株式会社 | Nonwoven fabric in double layer structure |
| JP2016108694A (en) * | 2014-12-05 | 2016-06-20 | ユニチカ株式会社 | Method for producing excellently water-absorptive nonwoven fabric with uneven pattern |
| JP2016141896A (en) * | 2015-01-30 | 2016-08-08 | ユニチカ株式会社 | Cleaning cloth manufacturing method |
| JP2016183432A (en) * | 2015-03-26 | 2016-10-20 | ユニチカ株式会社 | Composite nonwoven fabric |
| CN106222887A (en) * | 2016-08-26 | 2016-12-14 | 大连瑞源非织造布有限公司 | A kind of four layers of composite water-spurt non-woven cloth and manufacture method thereof |
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| JP2017008424A (en) * | 2015-06-17 | 2017-01-12 | ユニチカ株式会社 | Method for producing coating-agent coating cloth |
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| KR101753867B1 (en) | 2015-06-26 | 2017-07-04 | (주) 미벨라 | Elastic composite nonwoven fabric and manufacturing apparatus thereof |
| JP2017136154A (en) * | 2016-02-02 | 2017-08-10 | ユニチカ株式会社 | Cleaning cloth |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2016089314A (en) * | 2014-11-10 | 2016-05-23 | ユニチカ株式会社 | Nonwoven fabric in double layer structure |
| JP2016108694A (en) * | 2014-12-05 | 2016-06-20 | ユニチカ株式会社 | Method for producing excellently water-absorptive nonwoven fabric with uneven pattern |
| JP2016141896A (en) * | 2015-01-30 | 2016-08-08 | ユニチカ株式会社 | Cleaning cloth manufacturing method |
| JP2016183432A (en) * | 2015-03-26 | 2016-10-20 | ユニチカ株式会社 | Composite nonwoven fabric |
| JP2016215610A (en) * | 2015-05-26 | 2016-12-22 | ユニチカ株式会社 | Inkjet printer printing paper |
| JP2017008424A (en) * | 2015-06-17 | 2017-01-12 | ユニチカ株式会社 | Method for producing coating-agent coating cloth |
| KR101753867B1 (en) | 2015-06-26 | 2017-07-04 | (주) 미벨라 | Elastic composite nonwoven fabric and manufacturing apparatus thereof |
| JP2017106144A (en) * | 2015-12-11 | 2017-06-15 | ユニチカ株式会社 | Bulky laminated nonwoven fabric |
| JP2017136154A (en) * | 2016-02-02 | 2017-08-10 | ユニチカ株式会社 | Cleaning cloth |
| JP2017222954A (en) * | 2016-06-16 | 2017-12-21 | ユニチカ株式会社 | Laminated nonwoven fabric having uneven pattern |
| CN106222887A (en) * | 2016-08-26 | 2016-12-14 | 大连瑞源非织造布有限公司 | A kind of four layers of composite water-spurt non-woven cloth and manufacture method thereof |
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