JP2002249965A - Nonwoven fabric - Google Patents

Nonwoven fabric

Info

Publication number
JP2002249965A
JP2002249965A JP2001048321A JP2001048321A JP2002249965A JP 2002249965 A JP2002249965 A JP 2002249965A JP 2001048321 A JP2001048321 A JP 2001048321A JP 2001048321 A JP2001048321 A JP 2001048321A JP 2002249965 A JP2002249965 A JP 2002249965A
Authority
JP
Japan
Prior art keywords
nonwoven fabric
uneven pattern
pattern
convex
present
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP2001048321A
Other languages
Japanese (ja)
Other versions
JP4548814B2 (en
Inventor
Kenji Oka
憲二 岡
Sumihito Kiyooka
純人 清岡
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kuraray Co Ltd
Original Assignee
Kuraray Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kuraray Co Ltd filed Critical Kuraray Co Ltd
Priority to JP2001048321A priority Critical patent/JP4548814B2/en
Publication of JP2002249965A publication Critical patent/JP2002249965A/en
Application granted granted Critical
Publication of JP4548814B2 publication Critical patent/JP4548814B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Nonwoven Fabrics (AREA)
  • Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a nonwoven fabric that has excellent separability between nonwoven fabrics and can be exactly picked up one by one without picking up together the next one, when a plurality of nonwoven fabric sheets are stacked in a vessel or the like with excellent performance of cleaning, wiping and absorption of liquid or the like, and to provide a method of producing the same. SOLUTION: The objective nonwoven fabric has uneven patterns where the projected parts in the patterns have no corner and the apparent density (B1 ) of the projected part is larger than that (B2 ) of the recessed part. In the process for producing the objective nonwoven fabrics, the fiber web are placed on the supporter having the uneven patterns and a fluid is jetted from the upper part of the fiber web so that fibers are entangled to each other.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、拭き取りや、清掃
などの用途に適する不織布に関する。より詳細には、本
発明は特定の凹凸模様を有する不織布およびその製造方
法に関するものである。本発明の不織布は、拭き取りや
清掃などに用いたときに、拭き取り性能、清掃性能、液
体の吸収性などに優れており、しかも汚物などが通過し
にくくて手の汚れが生じない。さらに、本発明の不織布
は、複数枚の不織布を積み重ねたときに不織布間の分離
性に優れていて、容器等から取り出す際に次に続く不織
布を一緒に取り出してしまうというトラブルが生じず、
一枚ずつ確実に取り出すことができる。そして、本発明
の方法による場合は、前記した優れた特性を有する不織
布を簡単な操作で円滑に製造することができる。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a nonwoven fabric suitable for wiping, cleaning and the like. More specifically, the present invention relates to a nonwoven fabric having a specific uneven pattern and a method for producing the same. The nonwoven fabric of the present invention is excellent in wiping performance, cleaning performance, liquid absorbency, and the like when used for wiping, cleaning, and the like. Furthermore, the nonwoven fabric of the present invention is excellent in the separability between the nonwoven fabrics when a plurality of nonwoven fabrics are stacked, and the trouble of taking out the next nonwoven fabric together when taking out from a container or the like does not occur,
It can be taken out one sheet at a time. And, according to the method of the present invention, the nonwoven fabric having the above-mentioned excellent characteristics can be produced smoothly by a simple operation.

【0002】[0002]

【従来の技術】Z状や二つ折りなどに折った不織布(テ
ィッシュ)を複数枚積み重ねて容器内に収容し、使用時
に容器から一枚ずつ取り出すようにした容器入りティッ
シュが従来から広く知られている。容器入りティシュに
は、水性組成物で湿潤したいわゆるウエットタイプおよ
び湿潤されていないドライタイプの両方がある。容器に
収容したティッシュでは、一枚のティッシュを容器から
取り出すと、それに続く次のティッシュまで一緒に取り
出されてしまうという、いわゆる“ズル”が発生するこ
とがある。特に、ウエットタイプのティシュは、ティシ
ュが湿潤していてティッシュ間の分離性に劣るために、
前記した“ズル”が発生し易い。
2. Description of the Related Art A container-containing tissue in which a plurality of non-woven fabrics (tissues) folded in a Z-shape or two folds are stacked and stored in a container, and are taken out of the container one by one at the time of use has been widely known. I have. Containerized tissues include both so-called wet types which are wetted with the aqueous composition and dry types which are not wetted. With tissue stored in a container, when one tissue is taken out of the container, so-called "slurry" may occur, in which the next tissue is taken out together with the next tissue. In particular, the wet type tissue is wet and the separation between the tissues is inferior.
The above-mentioned "slipping" is likely to occur.

【0003】上記した“ズル”の発生を防止して、ティ
ッシュを一枚ずつ容器から確実に取り出せるようにする
ために、水性組成物で湿潤したウエットティッシュ(不
織布)の端部にエンボス加工を施すことが提案されてい
る(特表2000−509315)。しかしながら、こ
の従来技術による場合は、エンボス加工により生じた凸
部が角のあるエッジ状になっているため、一枚のウエッ
トティッシュを容器から取り出す際に、それに続く次の
ウエットティッシュが引っ掛かって一緒に容器から取り
出されてしまい易く、ウエットティッシュを一枚ずつ確
実に容器から取り出すという目的の解決には十分に寄与
していない。しかも、このウエットティッシュでは、エ
ンボス加工によって、押圧された部分の厚さが極端に薄
くなっていることがあり、その場合には該ウエットティ
ッシュを用いて汚物などを拭き取る際に、汚物がその薄
い部分を通過してしまい、手などを汚すなどのトラブル
が発生することがある。
In order to prevent the above-mentioned "slipping" from occurring and to ensure that the tissues can be taken out of the container one by one, embossing is applied to the end of a wet tissue (nonwoven fabric) wetted with an aqueous composition. It has been proposed (Table 2000-509315). However, in the case of this conventional technique, since the convex portion formed by embossing has an angular edge shape, when one wet tissue is taken out of the container, the subsequent wet tissue is caught by the next wet tissue. The wet tissue is easily removed from the container, and does not sufficiently contribute to the solution of the object of reliably removing the wet tissue one by one from the container. Moreover, in this wet tissue, the thickness of the pressed portion may be extremely thin due to embossing. In this case, when the wet tissue is used to wipe off dirt and the like, the dirt becomes thin. In some cases, troubles such as soiling of hands may occur.

【0004】また、容器からのティッシュを一枚ずつ確
実に取り出し得るようにするために、容器の取り出し口
を山型にしたりH型にすることが提案されている。しか
しながら、この場合には、終わり部分のティッシュ、例
えば90枚入りの場合は最後の2〜20枚程度のティッ
シュの取り出し時に、次のティッシュまで一緒に取り出
されてしまうという上記した“ズル”が発生し易い。
[0004] Further, it has been proposed to make the take-out opening of the container into a mountain shape or an H shape in order to reliably take out the tissue from the container one by one. However, in this case, when taking out the end tissue, for example, in the case of 90 pieces, when the last 2 to 20 pieces of tissue are taken out, the above-mentioned "slurry" occurs in which the next tissue is taken out together. Easy to do.

【0005】[0005]

【発明が解決しようとする課題】本発明の目的は、複数
枚積み重ねて容器等に収容した不織布を容器等から一枚
ずつ取り出す際に、次に続く不織布まで一緒に取り出し
てしまうという上記した“ズル”が発生せず、不織布を
容器から一枚ずつ確実に取り出すことのできる、分離性
に優れる不織布を提供することである。さらに、本発明
の目的は、拭き取り性や吸収性に優れ、汚れなどを良好
に拭き取ったり、吸収することのできる不織布を提供す
ることである。また、本発明の目的は、汚物などが通過
しにくく、手などの汚れが生じない不織布を提供するこ
とである。そして、本発明は、上記した優れた特性を有
する不織布を、簡単に且つ円滑に製造する方法を提供す
ることである。
SUMMARY OF THE INVENTION An object of the present invention is to remove the nonwoven fabrics stacked in a container or the like one by one from the container or the like one by one and take out the next nonwoven fabric together. An object of the present invention is to provide a nonwoven fabric which is excellent in separability and which can be reliably taken out of a nonwoven fabric one by one without generating any "slipping". Furthermore, an object of the present invention is to provide a nonwoven fabric which is excellent in wiping properties and absorbability, and which can satisfactorily wipe and absorb dirt and the like. Further, an object of the present invention is to provide a nonwoven fabric in which dirt and the like do not easily pass and stains such as hands do not occur. Then, the present invention is to provide a method for easily and smoothly producing a nonwoven fabric having the above-mentioned excellent properties.

【0006】[0006]

【課題を解決するための手段】上記の目的を達成すべく
本発明者らは鋭意検討を重ねてきた。そして、不織布内
での繊維の移動が可能な程度に繊維同士を交絡させた繊
維ウエブまたは非交絡繊維ウエブを、凹凸模様を有する
支持体上に載置して、上方から水流などの流体を噴射す
る交絡処理を行って、凹凸模様を有する不織布を製造し
た。そして、それにより得られた凹凸模様を有する不織
布について、その構造や物性について検討したところ、
該不織布では、凹凸模様の形成によって不織布を上下に
重ねたときに不織布間の接触面積が低減しており、しか
も凹凸模様の凸部が角のない滑らかな隆起形状を有して
いて凸部に他の不織布が引っ掛かることが防止されるこ
とにより、不織布間の分離性が極めて良好であることが
明らかになった。
The present inventors have intensively studied to achieve the above object. Then, a fiber web in which the fibers are entangled with each other to the extent that the fibers can move within the nonwoven fabric or a non-entangled fiber web is placed on a support having an uneven pattern, and a fluid such as a water stream is jetted from above. A nonwoven fabric having a concavo-convex pattern was manufactured by performing the confounding process described below. And, when examining the structure and physical properties of the nonwoven fabric having a concavo-convex pattern obtained thereby,
In the nonwoven fabric, the contact area between the nonwoven fabrics is reduced when the nonwoven fabric is vertically stacked by forming the uneven pattern, and the convex portion of the uneven pattern has a smooth raised shape with no corners, and It was revealed that the separability between the nonwoven fabrics was extremely good by preventing other nonwoven fabrics from being caught.

【0007】さらに、本発明者らが製造した凹凸模様を
有する上記不織布では、不織布における凸部により多く
の繊維が集合していて、凸部の方が凹部よりも見掛け密
度が高くなっていること、それに伴って凸部は潰れにく
く弾力性に富み、拭き取り性、液体の吸収性、清掃性能
に優れていることを見出した。また、本発明者らは、前
記した凹凸模様を有する不織布を、親水性繊維を用いて
製造した場合には、凸部に親水性繊維が多く存在するこ
とによって、汚れやその他の液体の吸収性、拭き取り性
能、清掃性能が一層向上することを見出した。そして、
そのような不織布に、拭き取り性能や清掃性能など促進
するための水性組成物を含浸させた場合には、水性組成
物の含浸能および保持能が高いことにより、拭き取り性
能や清掃性能が一層良好になることを見出した。さら
に、本発明者らは、上記で得られた不織布では、その凹
部は、従来のエンボス加工におけるように凹部が強く押
圧されていないために、極端に薄くなることが防止され
ていて、凹部での汚物などの通過が阻止されるために、
汚物等の通過による手などの汚れなどが生じないことを
見出し、それらの知見に基づいて本発明を完成した。
Further, in the nonwoven fabric having a concavo-convex pattern manufactured by the present inventors, more fibers are gathered in the convex portions of the nonwoven fabric, and the apparent density of the convex portions is higher than that of the concave portions. It has been found that the projections are hard to be crushed, have high elasticity, and are excellent in wiping properties, liquid absorbency, and cleaning performance. In addition, when the present inventors manufactured a non-woven fabric having the above-mentioned uneven pattern using hydrophilic fibers, the presence of a large amount of hydrophilic fibers in the convex portions caused absorption of dirt and other liquids. It was found that the wiping performance and the cleaning performance were further improved. And
When such a nonwoven fabric is impregnated with an aqueous composition for promoting wiping performance, cleaning performance, etc., the impregnating ability and holding ability of the aqueous composition are high, so that the wiping performance and cleaning performance are further improved. I found out. Furthermore, the present inventors have found that in the nonwoven fabric obtained above, the concave portion is not strongly pressed as in the conventional embossing, so that it is prevented from being extremely thin, and the concave portion is formed. To prevent the passage of waste
The present inventor has found that stains on hands and the like due to passage of filth and the like do not occur, and completed the present invention based on those findings.

【0008】すなわち、本発明は、 (1) 凹凸模様を有する不織布であって、凹凸模様の
凸部が角のない隆起形状を有し、且つ凸部の見掛け密度
(B1)が凹部の見掛け密度(B2)よりも大きいことを
特徴とする不織布である。
That is, the present invention provides: (1) a nonwoven fabric having a concavo-convex pattern, wherein the protruding portion of the concavo-convex pattern has a raised shape with no corners, and the apparent density (B 1 ) of the protruding portion is the apparent density of the recessed portion. A nonwoven fabric characterized by having a density higher than the density (B 2 ).

【0009】そして、本発明は、 (2) 凸部の見掛け密度(B1)と凹部の見掛け密度
(B2)の比(B1/B2)が1.05〜8である前記
(1)の不織布; (3) 凹凸模様における凸部の厚さ(C1)に対する
凹部の厚さ(C2)の比(C2/C1)が0.1〜0.9
である前記(1)または(2)の不織布; (4) 凹凸模様が、杉綾状の凹凸模様、並列斜線状の
凹凸模様、格子状の凹凸模様、スクエアー状の凹凸模
様、スタッガー状の凹凸模様または前記した凹凸模様の
うちの2つ以上が組合わさった凹凸模様である前記
(1)〜(3)のいずれの不織布; (5) 杉綾状の凹凸模様における斜め方向の凹凸のピ
ッチが1.5〜3.5mmで且つ長さ方向の凹凸のピッ
チが10〜35mmであり、並列斜線状の凹凸模様にお
ける並列斜線状の凹凸のピッチが1.5〜3.5mmで
あり、格子状の凹凸模様における縦方向および横方向の
凹凸のピッチが1.5〜3.5mmであり、スクエアー
状の凹凸模様における凹凸のピッチが0.15〜0.6
1mmであり、スタッガー状の凹凸模様における凹凸の
ピッチが0.15〜0.61mmである前記(4)の不
織布; (6) 目付けが15〜100g/m2であり、凹凸模
様における凸部の厚さが0.30〜3.0mmであり、
凹部の厚さが0.2〜1.2mmである前記(1)〜
(5)のいずれかの不織布; (7) 不織布の質量に基づいて、親水性繊維を10質
量%以上含有する前記(1)〜(6)のいずれかの不織
布;および、 (8) 水性液体組成物または非水性液体組成物を含浸
してなる前記(1)〜(7)のいずれかの不織布;を包
含する。
The present invention also provides: ( 2 ) the ratio (B 1 / B 2 ) of the apparent density (B 1 ) of the convex portion to the apparent density (B 2 ) of the concave portion is 1.05 to 8; And (3) a ratio (C 2 / C 1 ) of the thickness (C 2 ) of the concave portion to the thickness (C 1 ) of the convex portion in the uneven pattern is 0.1 to 0.9.
(4) The uneven pattern is a cedar-like uneven pattern, a parallel oblique uneven pattern, a lattice-like uneven pattern, a square-shaped uneven pattern, a staggered uneven pattern. Or the nonwoven fabric of any one of (1) to (3), wherein two or more of the above-described uneven patterns are combined; (5) The pitch of the diagonal unevenness in the cedar-like uneven pattern is 1. The pitch of the unevenness in the longitudinal direction is 5 to 3.5 mm and the pitch of the parallel oblique unevenness in the parallel oblique uneven pattern is 1.5 to 3.5 mm. The pitch of the unevenness in the vertical and horizontal directions of the pattern is 1.5 to 3.5 mm, and the pitch of the unevenness in the square-shaped uneven pattern is 0.15 to 0.6.
The nonwoven fabric of (4), wherein the nonwoven fabric has a pitch of 1 to 5 mm and a pitch of unevenness in the staggered uneven pattern of 0.15 to 0.61 mm; (6) a basis weight of 15 to 100 g / m 2 ; The thickness is 0.30 to 3.0 mm,
(1) to (1), wherein the thickness of the concave portion is 0.2 to 1.2 mm.
(7) The nonwoven fabric according to any one of the above (1) to (6), which contains 10% by mass or more of hydrophilic fibers based on the mass of the nonwoven fabric; and (8) aqueous liquid A nonwoven fabric according to any one of (1) to (7), impregnated with the composition or the non-aqueous liquid composition.

【0010】さらに、本発明は、 (9) 繊維ウエブを、凹凸模様を有する支持体上に載
置した状態で、繊維ウエブの上方から流体を噴射して交
絡処理することをことを特徴とする、前記(1)の不織
布の製造方法である。そして、本発明は、 (10) 前記(1)〜(8)のいずれかの不織布を用
いてなる清掃用品または拭き取り用品;および、 (11) 所定の寸法に裁断した前記(1)〜(8)の
いずれかの不織布の複数枚を、1枚ずつ順次取り出せる
ように一部をオーバーラップさせて折り畳んで容器内に
収容したことを特徴とする容器収容不織布;である。
Further, the present invention is characterized in that (9) a entanglement treatment is carried out by spraying a fluid from above the fiber web while the fiber web is placed on a support having an uneven pattern. And (1) a method for producing a nonwoven fabric. Further, the present invention provides: (10) a cleaning article or a wiping article using the nonwoven fabric of any one of the above (1) to (8); and (11) the above (1) to (8) cut to a predetermined size. A) a container-containing nonwoven fabric, characterized in that a plurality of any of the nonwoven fabrics is folded and partially accommodated in a container so that they can be sequentially taken out one by one.

【0011】[0011]

【発明の実施の形態】以下に本発明について詳細に説明
する。本発明は、凹凸模様を有する不織布であって、該
凹凸模様の凸部が角のない隆起形状を有し、且つ凸部の
見掛け密度(B1)が凹部の見掛け密度(B2)よりも大
きい不織布であれば、そのいずれをも包含する。本発明
の不織布では、該凹凸模様の凸部が、角のない隆起形
状、すなわち図1の(a)〜(c)に例示するように、
角のない滑らかな隆起形状を有している。そのため、本
発明の不織布は不織布間の分離性に優れていて、不織布
同士を重ねた際に、凸部での不織布間の引っ掛かりが防
止され、上記した“ズル”が生じない。なお、図1は、
不織布の断面を例示したものであり、図1においてAは
凹凸模様を有する本発明の不織布、1は該不織布におけ
る凸部、2は該不織布における凹部を示す。本発明の不
織布が図1のものに何ら限定されないことは言うまでも
ない。
DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail. The present invention relates to a nonwoven fabric having a concavo-convex pattern, wherein a convex portion of the concavo-convex pattern has a raised shape without corners, and an apparent density (B 1 ) of the convex portion is higher than an apparent density (B 2 ) of the concave portion. If it is a large nonwoven fabric, any of them is included. In the nonwoven fabric of the present invention, as shown in (a) to (c) of FIG.
It has a smooth raised shape with no corners. Therefore, the nonwoven fabric of the present invention is excellent in the separability between the nonwoven fabrics, and when the nonwoven fabrics are overlapped with each other, the nonwoven fabrics are prevented from being caught at the convex portions, and the above-mentioned "slipping" does not occur. In addition, FIG.
FIG. 1 illustrates a cross section of a nonwoven fabric. In FIG. 1, A denotes a nonwoven fabric of the present invention having an uneven pattern, 1 denotes a convex portion in the nonwoven fabric, and 2 denotes a concave portion in the nonwoven fabric. It goes without saying that the nonwoven fabric of the present invention is not limited to the one shown in FIG.

【0012】さらに、本発明の不織布では、凹凸模様の
凸部の見掛け密度(B1)が凹部の見掛け密度(B2)よ
りも大きくなっている。そのため、本発明の不織布で
は、凹部に比べて凸部により多くの繊維が集合した状態
で繊維同士が交絡していて、凸部は潰れにくく、弾性に
富んだ状態になっている。それに伴って、本発明の不織
布を清掃用、拭き取り用などの用途に用いた場合は、良
好な清掃性能、拭き取り性能を示し、液体などの吸収性
に優れている。また、本発明の不織布が親水性繊維を用
いて形成されている場合は、凸部に親水性繊維が多量に
存在することにより、凸部による水性汚れの吸収や拭き
取り性が一層良好になる。さらに、本発明の不織布に清
掃や拭き取りを促進するための水性組成物を含浸させた
場合には、水性組成物の含浸能および保持能が良好なこ
とにより、極めて優れた拭き取り性能、清掃性能などを
示す。
Further, in the nonwoven fabric of the present invention, the apparent density (B 1 ) of the convex portions of the uneven pattern is larger than the apparent density (B 2 ) of the concave portions. Therefore, in the nonwoven fabric of the present invention, the fibers are entangled with each other in a state where more fibers are gathered in the convex portions than in the concave portions, and the convex portions are hard to be crushed and have a high elasticity. Accordingly, when the nonwoven fabric of the present invention is used for applications such as cleaning and wiping, it exhibits good cleaning performance and wiping performance, and is excellent in absorbing liquid and the like. Moreover, when the nonwoven fabric of the present invention is formed using hydrophilic fibers, the absorption of water-based stains and the wiping properties by the convex portions are further improved by the presence of a large amount of the hydrophilic fibers in the convex portions. Furthermore, when the nonwoven fabric of the present invention is impregnated with an aqueous composition for promoting cleaning and wiping, the impregnating ability and holding ability of the aqueous composition are excellent, so that extremely excellent wiping performance, cleaning performance, etc. Is shown.

【0013】本発明の不織布では、凹凸模様における凸
部の見掛け密度が凹部の見掛け密度よりも大きくなって
いさえすれば、凸部の見掛け密度(B1)と凹部の見掛
け密度(B2)の比(B1/B2)は、凹凸模様の種類、
不織布を構成する繊維の種類、不織布の用途などに応じ
て調整することができる。一般には、不織布の拭き取り
性能、清掃性能、液体などの吸収性能、不織布の製造の
容易性、洗濯時の汚れ放出性などの点から、凸部の見掛
け密度(B1)と凹部の見掛け密度(B2)の比(B1
2)は1.05〜8であることが好ましく、1.2〜
5であることがより好ましい。また、本発明の不織布で
は、凸部の見掛け密度(B1)が0.05〜0.27g
/cm3、特に0.055〜0.10g/cm3であり、
凹部の見掛け密度(B 2)が0.03〜0.065g/
cm3、特に0.04〜0.06g/cm3であること
が、拭き取り用、清掃用、液体吸収用などとして用いる
際の拭き取り性能、清掃性能、液体などの吸収性能、取
り扱い性、製造の容易性、洗濯時の汚れ放出性などの点
から好ましい。ここで、本発明でいう不織布の凸部およ
び凹部の見掛け密度は、以下の実施例の項に記載した方
法で測定した見掛け密度をいう。
[0013] In the nonwoven fabric of the present invention, the unevenness in the uneven pattern
The apparent density of the part becomes larger than the apparent density of the concave part
The apparent density of the convex part (B1) And the appearance of the recess
Density (BTwo) Ratio (B1/ BTwo) Indicates the type of uneven pattern,
Depending on the type of fibers that make up the nonwoven fabric, the application of the nonwoven fabric, etc.
Can be adjusted. Generally, wipe the nonwoven
Performance, cleaning performance, absorption performance of liquids, etc.,
In terms of ease, release of dirt during washing, etc.
Density (B1) And the apparent density of the recess (BTwo) Ratio (B1/
BTwo) Is preferably from 1.05 to 8;
More preferably, it is 5. In addition, the nonwoven fabric of the present invention
Is the apparent density of the protrusions (B1) Is 0.05 to 0.27 g
/ CmThree, Especially 0.055 to 0.10 g / cmThreeAnd
Apparent density of recess (B Two) Is 0.03 to 0.065 g /
cmThree, Especially 0.04 to 0.06 g / cmThreeBeing
But used for wiping, cleaning, liquid absorption etc.
Wiping performance, cleaning performance, absorption of liquid, etc.
In terms of ease of handling, ease of manufacture, and soil release during washing
Is preferred. Here, the convex portions and the nonwoven fabric of the present invention are referred to.
The apparent densities of the recesses and depressions are as described in the following Examples.
The apparent density measured by the method.

【0014】さらに、本発明の不織布全体の目付けは、
用途などに応じて調節し得るが、一般的には、10〜1
00g/m2、特に30〜60g/m2であることが、拭
き取り用、清掃用などとして用いる際の拭き取り性能、
清掃性能、液体などの吸収性能、取り扱い性、製造の容
易性などの点から好ましい。
Further, the basis weight of the entire nonwoven fabric of the present invention is as follows:
Although it can be adjusted according to the use and the like, it is generally 10 to 1
00 g / m 2 , especially 30 to 60 g / m 2 , when used for wiping, cleaning and the like,
It is preferable from the viewpoints of cleaning performance, absorption performance of liquids and the like, handleability, ease of production, and the like.

【0015】本発明の不織布は、不織布の両面に凹凸模
様を有していてもよいし[例えば図1の(a)および
(b)]、または片面のみに凹凸模様を有しもう一方の
面は平坦であってもよい[例えば図1の(c)]。その
うちでも、本発明の不織布は、両方の面に凹凸模様を有
していることが、不織布間の分離性、拭き取り性能、清
掃性能、吸収性能、洗濯時の汚れ放出性などが良好にな
り、製造が容易であることから好ましい。不織布の両面
に凹凸模様を有する場合は、両面の凹凸模様が同じであ
っても、または異なっていてもよい。また、両面に凹凸
模様を有する場合は、一方の面ともう一方の面とで凹凸
模様の深さ(凸部の高さ又は凹部の深さ)が同じであっ
てもまたは異なっていてもよい。さらに、本発明の不織
布は、一方の面または両方の面の全体に凹凸模様を有し
ていてもよいし、または一部分(例えば端の部分、中央
部分など)にのみ凹凸模様を有していてもよい。また、
凹凸模様は、一つの面全体で同じであってもよいし、ま
たは部分的に異なっていてもよい。そのうちでも、本発
明の不織布は、面の全体に凹凸模様を有していること
が、不織布間の分離性、拭き取り性能、清掃性能、吸収
性能、製造の容易性、などの点から好ましい。後記する
本発明の方法により製造する場合は、一般に両面にほぼ
同じ凹凸模様を有する不織布が製造されることが多い。
The nonwoven fabric of the present invention may have an uneven pattern on both sides of the nonwoven fabric (for example, (a) and (b) of FIG. 1), or the other side having an uneven pattern on only one side. May be flat [for example, FIG. 1 (c)]. Among them, the nonwoven fabric of the present invention has irregularities on both surfaces, so that the separation property between the nonwoven fabrics, the wiping performance, the cleaning performance, the absorption performance, the dirt release property during washing, and the like are improved. It is preferable because the production is easy. When the nonwoven fabric has the uneven pattern on both surfaces, the uneven pattern on both surfaces may be the same or different. In the case where both surfaces have an uneven pattern, the depth of the uneven pattern (the height of the convex portion or the depth of the concave portion) may be the same or different between one surface and the other surface. . Further, the nonwoven fabric of the present invention may have a concavo-convex pattern on one or both surfaces, or may have a concavo-convex pattern only on a part (for example, an end part, a central part, etc.). Is also good. Also,
The concavo-convex pattern may be the same on one entire surface, or may be partially different. Among them, it is preferable that the nonwoven fabric of the present invention has a concavo-convex pattern on the entire surface from the viewpoints of separation properties between nonwoven fabrics, wiping performance, cleaning performance, absorption performance, ease of production, and the like. In the case of manufacturing by the method of the present invention described later, generally, a nonwoven fabric having substantially the same uneven pattern on both surfaces is often manufactured.

【0016】本発明の不織布では、凹凸模様における凸
部1の厚さ(C1)(図1に示すように凸部における最
大厚)に対する凹部の厚さ(C2)(図1に示すように
凹部における最小厚)の比(C2/C1)は、不織布にお
ける凹凸模様の種類、不織布の用途などに応じて調節し
得るが、一般的には0.1〜0.9であることが不織布
間の分離性、清掃性能、拭き取り性能、液体などの吸収
性能、製造の容易性などの点から好ましく、0.2〜
0.8であることがより好ましい。また、本発明の不織
布では、凸部の厚さ(C1)および凹部の厚さ(C2
は、不織布全体の目付け、不織布を構成する繊維の用
途、不織布の用途などに応じて異なり得るが、一般には
凸部の厚さ(C1)が0.3〜3.0mm、特に0.6
〜1.0mmであり、凹部の厚さ(C2)が0.1〜
1.2mm、特に0.3〜0.6mmであることが、不
織布間の分離性、清掃性能、拭き取り性能、液体などの
吸収性能、製造の容易性などの点から好ましい。
In the nonwoven fabric of the present invention, the thickness (C 1 ) of the convex portion 1 in the concavo-convex pattern (the maximum thickness of the convex portion as shown in FIG. 1) is compared with the thickness (C 2 ) of the concave portion (as shown in FIG. 1). The ratio (C 2 / C 1 ) can be adjusted according to the type of uneven pattern in the nonwoven fabric, the use of the nonwoven fabric, etc., but is generally 0.1 to 0.9. Is preferable from the viewpoints of separability between nonwoven fabrics, cleaning performance, wiping performance, absorption performance of liquids and the like, ease of production, and the like.
More preferably, it is 0.8. In the nonwoven fabric of the present invention, the thickness of the convex portion (C 1 ) and the thickness of the concave portion (C 2 )
May vary depending on the basis weight of the entire nonwoven fabric, the use of the fibers constituting the nonwoven fabric, the use of the nonwoven fabric, and the like. In general, the thickness (C 1 ) of the convex portion is 0.3 to 3.0 mm, especially 0.6.
And the thickness (C 2 ) of the concave portion is 0.1 to 1.0 mm.
It is preferably 1.2 mm, particularly 0.3 to 0.6 mm, from the viewpoints of separation between nonwoven fabrics, cleaning performance, wiping performance, absorption of liquids and the like, ease of production, and the like.

【0017】さらに、本発明の不織布の強力、伸度など
の力学的特性は特に制限されず、不織布の用途や使用目
的などに応じて調節し得るが、一般には、縦方向(不織
布製造時の不織布の長さ方向)の強力が3〜28kg/
5cmおよび横方向(不織布製造時の幅方向)の強力が
0.5〜10kg/5cmであることが、耐久性、取り
扱い性、形態安定性などの点から好ましい。また、不織
布の伸度は、縦方向が15〜45%、横方向が70〜1
50%であることが、取り扱い性、形態安定性などの点
から好ましい。なお、本明細書における不織布の強力お
よび伸度は、以下の実施例の項に記載した方法で測定し
た強力および伸度を言う。
Furthermore, the mechanical properties such as strength and elongation of the nonwoven fabric of the present invention are not particularly limited, and can be adjusted according to the use and purpose of use of the nonwoven fabric. Strength in the length direction of the nonwoven fabric) is 3 to 28 kg /
It is preferable from the viewpoint of durability, handleability, form stability and the like that the strength in 5 cm and the transverse direction (width direction in the production of the nonwoven fabric) is 0.5 to 10 kg / 5 cm. The elongation of the nonwoven fabric is 15 to 45% in the vertical direction and 70 to 1 in the horizontal direction.
50% is preferred from the viewpoints of handleability, form stability and the like. The strength and elongation of the nonwoven fabric in this specification refer to the strength and elongation measured by the methods described in the following Examples.

【0018】本発明の不織布における凹凸模様の形状や
種類は特に制限されず、種々の凹凸模様を選択すること
ができる。そのうちでも、本発明の不織布における凹凸
模様は、線状および/または点状の凹凸模様をベースと
する凹凸模様であることが、不織布間の分離性が良好に
なる点、凹凸模様を形成し易い点、などの点から好まし
い。本発明の不織布における凹凸模様の代表例として
は、図2の(a)〜(e)の模式図で示す凹凸模様を挙
げることができる。なお、図2は、不織布の上方からみ
た平面図である。図2の(a)は、杉綾状の凹凸模様の
例であり、図2の(a)において、3は斜め方向の凹部
の最も深い部分、4は長さ方向の凹部の最も深い部分を
示す。図2の(b)は、並列斜線状の凹凸模様の例であ
り、図2の(b)において、5は斜め方向の凹部の最も
深い部分を示す。図2の(c)は、格子状の凹凸模様の
例であり、図2の(c)において、6は縦方向または横
方向の凹部の最も深い部分を示す。図2の(d)は、ス
クエアー状の凹凸模様の例であり、図2の(d)におい
て、7は円形に窪んだ凹部を示す。図2の(e)は、ス
タッガー状の凹凸模様の例であり、図2の(e)におい
て、8は円形に窪んだ凹部を示す。また、前記した凹凸
模様のうちの2つ以上が組合わさった凹凸模様であって
もよい。
The shape and type of the uneven pattern in the nonwoven fabric of the present invention are not particularly limited, and various uneven patterns can be selected. Among them, the uneven pattern in the nonwoven fabric of the present invention is preferably a concave and convex pattern based on a linear and / or dot-shaped uneven pattern. It is preferable from the point of view. As a typical example of the concavo-convex pattern in the nonwoven fabric of the present invention, the concavo-convex pattern shown in the schematic diagrams of FIGS. FIG. 2 is a plan view of the nonwoven fabric as viewed from above. FIG. 2A shows an example of a cedar-like uneven pattern. In FIG. 2A, reference numeral 3 denotes the deepest portion of the diagonal concave portion, and 4 denotes the deepest portion of the longitudinal concave portion. . FIG. 2B shows an example of a parallel diagonal oblique pattern. In FIG. 2B, reference numeral 5 denotes the deepest portion of the diagonal concave portion. FIG. 2C shows an example of a lattice-shaped uneven pattern. In FIG. 2C, reference numeral 6 denotes the deepest portion of the vertical or horizontal concave portion. FIG. 2D shows an example of a square uneven pattern. In FIG. 2D, reference numeral 7 denotes a circular concave portion. FIG. 2E shows an example of a staggered uneven pattern. In FIG. 2E, reference numeral 8 denotes a circular concave portion. Further, an uneven pattern in which two or more of the above-described uneven patterns are combined may be used.

【0019】本発明の不織布において、凹凸模様間のピ
ッチ(間隔)は特に制限されず、不織布を構成する繊維
の種類、凹凸模様の種類、不織布の厚さ、目付け、不織
布の用途などに応じて調節することができる。図2に示
したような凹凸模様においては、凹凸模様の形成の容易
性、不織布の分離性、拭き取り性能、清掃性能、液体な
どの吸収性能などが良好になることから、 ・図2の(a)に示す杉綾状の凹凸模様では、斜め方向
の凹凸のピッチDが1.5〜3.5mmで且つ長さ方向
の凹凸のピッチEが10〜35mmであることが好まし
く; ・図2の(b)に示す並列斜線状の凹凸模様では、並列
斜線状の凹凸のピッチFが1.5〜3.5mmであるこ
とが好ましく; ・図2の(c)に示す格子状の凹凸模様では縦方向およ
び横方向の凹凸のピッチG,Hが1.5〜3.5mmで
あること好ましく; ・図2の(d)に示すスクエアー状の凹凸模様では、凹
凸のピッチI,Jが0.15〜0.61mmであること
が好ましく; ・図2の(e)に示すスタッガー状の凹凸模様では、凹
凸のピッチK,Lが0.15〜0.61mmであること
が好ましい。
In the nonwoven fabric of the present invention, the pitch (interval) between the concavo-convex patterns is not particularly limited, and depends on the type of fibers constituting the nonwoven fabric, the type of the concavo-convex pattern, the thickness of the nonwoven fabric, the basis weight, the use of the nonwoven fabric, and the like. Can be adjusted. In the uneven pattern as shown in FIG. 2, the ease of forming the uneven pattern, the separability of the nonwoven fabric, the wiping performance, the cleaning performance, and the absorption performance of liquids and the like are improved. 2), the pitch D of the unevenness in the oblique direction is preferably 1.5 to 3.5 mm, and the pitch E of the unevenness in the longitudinal direction is preferably 10 to 35 mm; In the parallel diagonal uneven pattern shown in b), the pitch F of the parallel diagonal uneven pattern is preferably 1.5 to 3.5 mm; in the lattice-shaped uneven pattern shown in FIG. Preferably, the pitches G and H of the unevenness in the direction and the lateral direction are 1.5 to 3.5 mm; In the square-shaped unevenness pattern shown in FIG. 2D, the pitches I and J of the unevenness are 0.15. Preferably about 0.61 mm; shown in FIG. The staggered form uneven pattern, it is preferable pitch K of the irregularities, L is 0.15~0.61Mm.

【0020】本発明の不織布では、不織布を構成する繊
維の種類は特に制限されず、天然繊維、半合成繊維、人
造繊維、合成繊維、無機繊維などのいずれを用いてもよ
く、具体例としては、綿、麻、羊毛、パルプ、レーヨン
繊維、ポリノジック繊維、キュプラ繊維、アセテート繊
維などの天然繊維または半合成繊維;ポリエチレン、ポ
リプロピレン、ポリエステル、ポリアミド、アクリル、
ポリ塩化ビニリデン、ポリビニルアルコールなどの合成
樹脂の1種または2種以上を用いて製造した各種合成繊
維(例えば非複合・非混合繊維、複合紡糸繊維、混合紡
糸繊維など);炭素繊維などの無機繊維などを挙げるこ
とができる。本発明の不織布は、前記した繊維の1種ま
たは2種以上から構成されていることができる。
In the nonwoven fabric of the present invention, the type of fibers constituting the nonwoven fabric is not particularly limited, and any of natural fibers, semi-synthetic fibers, artificial fibers, synthetic fibers, inorganic fibers and the like may be used. Natural or semi-synthetic fibers such as cotton, hemp, wool, pulp, rayon fiber, polynosic fiber, cupra fiber, acetate fiber; polyethylene, polypropylene, polyester, polyamide, acrylic,
Various synthetic fibers (eg, non-composite / non-mixed fibers, composite spun fibers, mixed spun fibers, etc.) produced using one or more synthetic resins such as polyvinylidene chloride and polyvinyl alcohol; inorganic fibers such as carbon fibers And the like. The nonwoven fabric of the present invention can be composed of one or more of the above-mentioned fibers.

【0021】本発明の不織布を、清掃用や拭き取り用に
用いる場合、特にウエットタイプの不織布にして清掃用
や拭き取り用に用いる場合は、不織布の質量に基づい
て、親水性繊維を10質量%以上含有することが好まし
く、40〜90質量%含有することがより好ましい。そ
の際の親水性繊維としては、例えば、綿、麻、パルプ、
レーヨン繊維、ポリノジック繊維、キュプラ繊維、アセ
テート繊維、親水性ポリビニルアルコール繊維、親水性
ポリエチレンテレフタレート系繊維などを挙げることが
でき、これらの1種または2種以上を用いることができ
る。
When the nonwoven fabric of the present invention is used for cleaning or wiping, particularly when a wet type nonwoven fabric is used for cleaning or wiping, the hydrophilic fiber is used in an amount of 10% by mass or more based on the mass of the nonwoven fabric. It is preferably contained, more preferably 40 to 90% by mass. As the hydrophilic fiber at that time, for example, cotton, hemp, pulp,
Rayon fiber, polynosic fiber, cupra fiber, acetate fiber, hydrophilic polyvinyl alcohol fiber, hydrophilic polyethylene terephthalate fiber and the like can be mentioned, and one or more of these can be used.

【0022】また、本発明の不織布を構成する繊維の一
部として、比較的低温で溶融する低融点繊維(例えばポ
リエチレン繊維、ポリエステルやポリアミドなどの高融
点重合体を芯成分としてポリエチレンを鞘成分とする芯
鞘型複合繊維など)を用いて、該低融点繊維を熱接着性
繊維として機能させることができる。凹凸模様の形成後
に、該低融点繊維(熱接着性繊維)の融点以上に加熱し
て繊維間の接合を行うと、凹凸模様の形態安定性が向上
する。熱接着性繊維を用いる代わりに、凹凸模様形成後
に不織布に外部から接着剤を施して凹凸模様の形態安定
性の向上を図ってもよい。
Further, as a part of the fiber constituting the nonwoven fabric of the present invention, a low-melting fiber which melts at a relatively low temperature (for example, polyethylene fiber, a high-melting polymer such as polyester or polyamide as a core component and polyethylene as a sheath component). The low-melting-point fiber can function as a heat-adhesive fiber. After the formation of the concavo-convex pattern, if the fibers are joined to each other by heating to a temperature equal to or higher than the melting point of the low melting point fiber (thermo-bonding fiber), the morphological stability of the concavo-convex pattern is improved. Instead of using the heat-adhesive fiber, an adhesive may be externally applied to the nonwoven fabric after the formation of the uneven pattern to improve the morphological stability of the uneven pattern.

【0023】特に、本発明の不織布は、親水性繊維を4
0〜80質量%、ポリエステル、ポリアミド、ポリプロ
ピレン、ポリビニルアルコールなどの重合体よりなる高
融点繊維を5〜30質量%および上記した低融点繊維を
10〜30質量%の割合で含有する繊維混合物を用いて
形成されていることが好ましい。
In particular, the nonwoven fabric of the present invention contains 4 hydrophilic fibers.
A fiber mixture containing 0 to 80% by mass, 5 to 30% by mass of a high melting point fiber made of a polymer such as polyester, polyamide, polypropylene, and polyvinyl alcohol and 10 to 30% by mass of the above low melting point fiber is used. It is preferable that it is formed.

【0024】本発明の不織布を構成する繊維の断面形状
は特に制限されず、丸形断面(円形断面);三角形、多
角形、多葉形、楕円形、中空形、偏平形、V字形、T字
形、アレイ形、その他の異形断面などのいずれであって
もよい。また、本発明の不織布を構成する繊維の単繊維
繊度は特に制限されないが、一般には0.5〜9dte
x、特に1.6〜3.4dtexであることが、不織布
の強力、伸度などの機械的特性が良好になり、しかも拭
き取り性、速乾性、洗濯性が良好になる点から好まし
い。さらに、本発明の不織布を構成する繊維の長さは、
一般に、25〜80mm、特に38〜51mmであるこ
とが、上記した凹凸模様を有する本発明の不織布の製造
の容易性、不織布の強力や伸度などの機械的特性などの
点から好ましい。
The cross-sectional shape of the fibers constituting the nonwoven fabric of the present invention is not particularly limited, and is a round cross section (circular cross section); triangular, polygonal, multi-lobal, elliptical, hollow, flat, V-shaped, T-shaped. The shape may be any of a letter shape, an array shape, and other irregular cross sections. Further, the single fiber fineness of the fibers constituting the nonwoven fabric of the present invention is not particularly limited, but is generally 0.5 to 9 dte.
x, especially 1.6 to 3.4 dtex, is preferred in that the mechanical properties such as the strength and elongation of the nonwoven fabric are improved, and the wiping properties, quick drying properties and washing properties are also improved. Furthermore, the length of the fibers constituting the nonwoven fabric of the present invention is:
In general, the thickness is preferably from 25 to 80 mm, particularly from 38 to 51 mm, from the viewpoint of the ease of production of the nonwoven fabric of the present invention having the above-mentioned uneven pattern and the mechanical properties such as the strength and elongation of the nonwoven fabric.

【0025】本発明の不織布は、液体組成物を含浸する
ことなく、そのままの状態でドライタイプとして用いて
もよいし、水性液体組成物を含浸または被覆してウエッ
トタイプにしてもよいし、または非水性液体組成物を含
浸または被覆してもよい。本発明の不織布に含浸または
被覆する液体組成物の代表例は、水性液体組成物、また
はアルコール性液体組成物である。水性組成物は、水溶
液、水中油型エマルジヨン、油中水型エマルジョン、水
性懸濁液などのいずれの形態であってもよい。本発明の
不織布に含浸または被覆する液体組成物で用いる成分の
種類は、不織布の用途や使用目的などに応じて適宜選択
することができ、例えば、各種動植物油脂、鉱油、シリ
コーン油、乳化剤(界面活性剤)、湿潤剤、皮膚軟化
剤、安定剤、抗菌剤、抗カビ剤、防腐剤、皮膚洗浄剤、
香料などを挙げることができる。本発明の不織布を人体
用に用いる場合は、不織布に含浸または被覆する液体組
成物は、安全性および衛生性に優れるものでなければな
らない。また、本発明の不織布を人体以外の用途、例え
ば、家具や家屋、その他の物の清掃に用いる場合は、各
々の用途に適した成分を液体組成物中に配合するとよ
い。
The nonwoven fabric of the present invention may be used as it is as a dry type without impregnation with a liquid composition, or may be impregnated or coated with an aqueous liquid composition to form a wet type, or The non-aqueous liquid composition may be impregnated or coated. Representative examples of liquid compositions for impregnating or coating the nonwoven fabric of the present invention are aqueous liquid compositions or alcoholic liquid compositions. The aqueous composition may be in any form such as an aqueous solution, an oil-in-water emulsion, a water-in-oil emulsion, and an aqueous suspension. The type of component used in the liquid composition to be impregnated or coated on the nonwoven fabric of the present invention can be appropriately selected according to the use and purpose of use of the nonwoven fabric, and includes, for example, various animal and vegetable oils and fats, mineral oil, silicone oil, emulsifier (interface Activator), wetting agent, emollient, stabilizer, antibacterial, antifungal, antiseptic, skin cleanser,
Perfumes and the like can be mentioned. When the nonwoven fabric of the present invention is used for the human body, the liquid composition impregnated or coated on the nonwoven fabric must be excellent in safety and hygiene. When the nonwoven fabric of the present invention is used for uses other than the human body, for example, for cleaning furniture, houses, and other objects, it is preferable to mix components suitable for each use in the liquid composition.

【0026】本発明の不織布の製造法は特に制限され
ず、凸部が角のない隆起形状をなす凹凸模様を有してい
て且つ凸部の見掛け密度(B1)が凹部の見掛け密度
(B2)よりも大きい不織布を製造し得る方法であれば
いずれの方法で製造していてもよい。そのうちでも、本
発明の不織布は、繊維ウエブを凹凸模様を有する支持体
上に載置して、繊維ウエブの上方から流体を噴射して交
絡処理する方法によって極めて簡単に且つ円滑に製造す
ることができる。
The method for producing the nonwoven fabric of the present invention is not particularly limited, and the convex portion has an uneven pattern having a raised shape with no corners, and the apparent density (B 1 ) of the convex portion is the apparent density (B 1 ) of the concave portion. Any method may be used as long as a nonwoven fabric larger than 2 ) can be manufactured. Among them, the nonwoven fabric of the present invention can be manufactured extremely easily and smoothly by a method in which a fiber web is placed on a support having an uneven pattern and a fluid is jetted from above the fiber web to perform a confounding treatment. it can.

【0027】以下に図3を参照して、上記した交絡処理
による製造方法について説明する。図3において、Aは
凹凸模様を有する本発明の不織布、1は該不織布におけ
る凸部、2は該不織布における凹部、9は凹凸模様を形
成させる前の繊維ウエブ、10は凹凸模様を有する支持
体、11は噴射流体(噴射水流や噴射気体など)を示
す。繊維ウエブ9を構成する繊維としては、凹凸模様を
形成させるための噴射流体11による交絡処理の際に、
繊維ウエブ9内で繊維が支持体10の凹部10bへと移
動して不織布に凹凸模様が形成され得るようにするため
に、一般に短繊維が好ましく用いられる。繊維長は、凹
凸模様の形成性、得られる不織布の強力や伸度などの力
学的特性、毛羽立ち防止性などの点から、一般に25〜
80mmであることが好ましく、38〜51mmである
ことがより好ましい。
The manufacturing method by the above-mentioned confounding process will be described below with reference to FIG. In FIG. 3, A is the nonwoven fabric of the present invention having a concavo-convex pattern, 1 is a convex portion in the nonwoven fabric, 2 is a concave portion in the nonwoven fabric, 9 is a fiber web before forming the concavo-convex pattern, and 10 is a support having a concavo-convex pattern. , 11 indicate a jet fluid (a jet water stream, a jet gas, etc.). The fibers constituting the fiber web 9 are subjected to a confounding process by the jet fluid 11 for forming a concavo-convex pattern.
Generally, short fibers are preferably used in order to allow the fibers to move to the concave portions 10b of the support 10 in the fiber web 9 and form an uneven pattern on the nonwoven fabric. The fiber length is generally from 25 to 25 in terms of the formability of the concavo-convex pattern, the mechanical properties such as the strength and elongation of the obtained nonwoven fabric, and the antifuzzing property.
It is preferably 80 mm, more preferably 38 to 51 mm.

【0028】また、凹凸模様を形成する前の繊維ウエブ
9としては、繊維間の交絡のない非交絡繊維ウエブ又は
交絡していている繊維ウエブのいずれであってもよい
が、繊維間の絡みがないかまたは絡みの程度が少なすぎ
ると、繊維ウエブ9に流体11を噴射して交絡処理と同
時に凹凸模様を形成させる際に、繊維ウエブ9、ひいて
はそれから形成された凹凸模様を有する不織布Aに穴が
あくというトラブルを生ずることがある。一方、繊維ウ
エブ9における繊維間の交絡が強すぎると、凹凸模様を
有する支持体10の上に繊維ウエブ9を載置して流体1
1を噴射して交絡処理したときに、繊維ウエブ9内での
繊維の移動が抑制されて、繊維が支持体10の凹部10
aに集まらなくなり、不織布に凹凸模様が形成されにく
くなる。そのため、繊維ウエブ9としては、凹凸模様を
有する不織布Aを製造するための流体11の噴射時に繊
維ウエブ9に穴があかず、しかも該流体11の噴射時に
繊維ウエブ内で繊維間の交絡と共に繊維の移動が生じて
凹凸模様を形成し得るような交絡状態を有する繊維ウエ
ブが好ましく用いられる。その際の交絡状態は、繊維ウ
エブ9を構成する繊維の種類、繊度、繊維長、繊維ウエ
ブの目付け、繊維ウエブに凹凸模様を形成するための流
体11の圧力などに応じて異なり得る。本発明の方法で
好ましく用い得る繊維ウエブ9としては、例えば、短繊
維を用いて形成したカードウエブを、パンチメタル状支
持体や網状支持体の上に載置して、ウエブの上方からウ
エブに穴があかない程度の圧力(例えば水圧)で流体を
噴射して短繊維間の交絡処理を施したものを挙げること
ができる。
The fiber web 9 before the formation of the concavo-convex pattern may be either a non-entangled fiber web having no entanglement between fibers or a fiber web having entanglement. If it is not present or the degree of entanglement is too small, when the fluid 11 is sprayed on the fiber web 9 to form the concavo-convex pattern at the same time as the confounding process, the fiber web 9 and, consequently, the nonwoven fabric A having the concavo-convex pattern formed therefrom have holes. There is a case where trouble occurs. On the other hand, if the entanglement between the fibers in the fiber web 9 is too strong, the fiber web 9 is placed on the support 10 having an uneven pattern and the fluid 1
1 is sprayed to perform the confounding process, the movement of the fibers in the fiber web 9 is suppressed, and the fibers are
a, and the uneven pattern is less likely to be formed on the nonwoven fabric. Therefore, as the fiber web 9, the fiber web 9 does not have a hole when the fluid 11 for manufacturing the nonwoven fabric A having the concavo-convex pattern is jetted, and when the fluid 11 is jetted, the fiber web 9 is entangled with the fibers together with the fibers. A fiber web having an entangled state in which the movement of the fibers causes a concavo-convex pattern to be formed is preferably used. The entangled state at that time may differ depending on the type of fiber constituting the fiber web 9, the fineness, the fiber length, the basis weight of the fiber web, the pressure of the fluid 11 for forming an uneven pattern on the fiber web, and the like. As the fiber web 9 that can be preferably used in the method of the present invention, for example, a card web formed using short fibers is placed on a punched metal-like support or a net-like support, and the web is formed from above the web. An example in which a fluid is jetted at a pressure (for example, water pressure) that does not cause a hole to perform entanglement between short fibers can be given.

【0029】本発明の製造方法では、図3の(a)に示
すように、上記した繊維ウエブ9を、凹凸模様を有する
支持体10の上に載置する。次いで、図3の(b)に示
すように、繊維ウエブ9の上方から圧力流体11を噴射
する。この際に、上方から噴射した圧力流体11によっ
て、繊維ウエブ9内の繊維間に交絡が生じると共に、図
3の(c)に示すように、繊維ウエブ9内で繊維の移動
が生じて、繊維が支持体10における凹凸模様の凸部1
0aと凸部10aとの間の部分(凹部)10bに多く集
まって、該凹部10bの部分で見掛け密度の高い、角の
ない凸状部が形成される。一方、支持体10における凸
部10aでは、繊維量が低減するため、見掛け密度の低
い凹状部が形成される。その結果、凸部が角のない隆起
形状を有し、且つ凸部の見掛け密度(B1)が凹部の見
掛け密度(B2)よりも大きい本発明の不織布が製造さ
れる。その際に、凹凸模様を有する支持体10における
凹凸模様の種類、ピッチ、凹凸の深さ、繊維ウエブ9の
上方から噴射する流体11の圧力などを調整することに
よって、不織布における凹凸模様の種類、ピッチ、凹凸
の深さ、凸部および凹部の見掛け密度や厚さなどを調整
することができる。
In the manufacturing method of the present invention, as shown in FIG. 3A, the above-mentioned fiber web 9 is placed on a support 10 having an uneven pattern. Next, as shown in FIG. 3B, the pressure fluid 11 is injected from above the fiber web 9. At this time, entanglement occurs between the fibers in the fiber web 9 due to the pressure fluid 11 injected from above, and movement of the fibers occurs in the fiber web 9 as shown in FIG. Is the convex portion 1 of the concavo-convex pattern on the support 10
A large amount of condensed matter is formed in a portion (concave portion) 10b between the convex portion 10a and the convex portion 10a, and a convex portion having a high apparent density and having no corners is formed in the concave portion 10b. On the other hand, in the convex portion 10a of the support 10, since the amount of fibers is reduced, a concave portion having a low apparent density is formed. As a result, the nonwoven fabric of the present invention is produced in which the convex portions have a raised shape with no corners, and the apparent density (B 1 ) of the convex portions is larger than the apparent density (B 2 ) of the concave portions. At that time, by adjusting the type of the uneven pattern on the support 10 having the uneven pattern, the pitch, the depth of the unevenness, the pressure of the fluid 11 jetted from above the fiber web 9, the type of the uneven pattern on the nonwoven fabric, The pitch, the depth of the irregularities, the apparent density and the thickness of the convex portions and the concave portions, and the like can be adjusted.

【0030】本発明の不織布の製造に用いる凹凸模様を
有する支持体10としては、その上面に所定の凹凸模様
を有し、流体噴射による交絡処理時に繊維ウエブ9を安
定した状態で支持することができ、且つ繊維ウエブ9の
上方から噴射される流体を繊維ウエブ9の背後(下面
側)および支持体10を通して逃がすことのできる支持
体であればいずれでもよく、例えば、凹凸模様を有する
網状体、凹凸模様を有するパンチングメタル(パンチン
グドラム)などを挙げることができる。支持体10とし
て凹凸模様を有する網状体を用いる場合は、何ら限定さ
れるものではないが、例えば図4に例示するように、細
かい網目を有する全体に平坦な網体10aの上に、更に
所定の凹凸模様(例えば上記した杉綾状、斜め平行斜線
状、格子状、スクエアー状、スガッター状の凹凸模様)
を有する網体10b(図4では杉綾状の網体)を重ねて
なる支持体などを用いることができる。その際に網体1
0bを構成する線状部分の厚さや太さを調整することに
より、不織布の凹凸模様の深さ(凸部や凹部の厚さ)を
調整することができる。なお、図4の(a)は網体10
aと網体10bを重ねる前の状態を示し、図4の(b)
は網体10aと網体10bを重ねた後の状態を示す。
The support 10 having an uneven pattern used in the production of the nonwoven fabric of the present invention has a predetermined uneven pattern on its upper surface, and supports the fiber web 9 in a stable state during the entanglement treatment by fluid jetting. Any support can be used as long as it is capable of allowing fluid ejected from above the fiber web 9 to escape behind the fiber web 9 (lower surface side) and through the support 10. Punching metal (punching drum) having a concavo-convex pattern can be used. In the case where a net having an uneven pattern is used as the support 10, there is no particular limitation. For example, as shown in FIG. 4, a predetermined mesh is further placed on a flat net 10 a having a fine mesh. Uneven pattern (for example, the above-mentioned cedar-like, oblique parallel diagonal, lattice, square, and sgutter-like uneven patterns)
A support formed by stacking nets 10b (in FIG. 4, a cedar-shaped net) can be used. At that time, the net 1
By adjusting the thickness and thickness of the linear portion constituting 0b, the depth of the uneven pattern (thickness of the projections and depressions) of the nonwoven fabric can be adjusted. FIG. 4A shows the net 10.
FIG. 4B shows a state before a is superimposed on the net 10b.
Indicates a state after the net 10a and the net 10b are overlapped.

【0031】また、凹凸模様を有する交絡不織布を製造
するための流体としては、加圧水流、加圧気体流などを
挙げることができ、そのうちでも加圧水流が繊維間の交
絡がより良好に行えることから好ましく用いられる。加
圧流体(特に加圧水流)の噴射装置としては、直径0.
07〜0.15mmのオリフィスを0.6〜1.0mm
の間隔で横方向に多数設けたノズルを、不織布の幅方向
(進行方向を横切る方向)に1本〜5本配列したものな
どが好適に用いられる。その際の加圧流体(加圧水流)
の圧力(水圧)は5〜80kg/m2程度にすることが
好ましい。加圧流体流は、柱状流体流(柱状水流)であ
っても、または放射状流体流(放射状水流)のいずれで
あってもよい。
Examples of the fluid for producing the entangled nonwoven fabric having a concavo-convex pattern include a pressurized water stream and a pressurized gas stream. It is preferably used. As an injection device for a pressurized fluid (particularly, a pressurized water flow), a diameter of 0.1 mm is used.
0.6-1.0mm orifice of 07-0.15mm
A nozzle in which a large number of nozzles provided in the horizontal direction at intervals of 1 to 5 in the width direction of the nonwoven fabric (the direction crossing the traveling direction) is suitably used. Pressurized fluid at that time (pressurized water flow)
Is preferably about 5 to 80 kg / m 2 . The pressurized fluid stream can be either a columnar fluid stream (pillar stream) or a radial fluid stream (radial stream).

【0032】本発明の不織布は表面に凹凸模様を有し、
且つ該凹凸模様における凸部が角のない滑らか隆起状を
なし、しかも凸部の見掛け密度が凹部の見掛け密度に比
べて大きく、また凹部が極端に薄くならないことによ
り、不織布間の分離性に優れ、しかも拭き取り性能、清
掃性能、吸収性能、汚物の通過阻止能に優れているた
め、それらの特性を活かして、例えば、身体清浄用シー
ト、トイレットペーパー、使い捨てタオル、化粧用シー
ト、おしぼりなどの人体に用いるシート材料;家具や什
器、室内、車両などのような物の清掃用や汚れふき取り
用シート;などとして有効に用いることができる。
The nonwoven fabric of the present invention has an uneven pattern on the surface,
In addition, the convex portions in the concavo-convex pattern form a smooth raised shape with no corners, and the apparent density of the convex portions is larger than the apparent density of the concave portions, and the concave portions are not extremely thin, so that the separation between the nonwoven fabrics is excellent. In addition, since it has excellent wiping performance, cleaning performance, absorption performance, and ability to block dirt, it is possible to take advantage of these properties to make use of these properties, for example, human bodies such as body cleaning sheets, toilet paper, disposable towels, makeup sheets, and towels. Sheet material used for cleaning; furniture, furniture, indoors, vehicles, etc .;

【0033】本発明の不織布は、所定の大きさに切断し
て多数枚重ねて容器に収容したときに、容器から一枚ず
つ良好に取り出すことができ、次に続く不織布まで一緒
に取り出されてしまうという“ズル”が発生しない。そ
のため、本発明の不織布は、容器収容不織布としても好
適に用いることができる。本発明の不織布を容器収容不
織布の形態にして用いるに当たっては、不織布を所定の
寸法に裁断したものを、1枚ずつ順次取り出せるように
端部などの一部をオーバーラップさせて折り畳んで、容
器内に収容する方式などが採用される。その際の折り畳
み方式は特に制限されず、不織布が一枚ずつ取り出せ得
るようにした折り畳み方式であればいずれでもよい。何
ら限定されるものではないが、容器収容不織布の折り畳
み方式としては、図5の(a)の模式図で例示するよう
なZ状折り畳み、図5の(b)の模式図で例示するよう
な2つ折りなどを挙げることができる。図5の(a)に
おいて、12は容器を示し、13は容器12の開口部を
示し、14a,14b,14c,14d,・・・は、一
方の端部で一枚の不織布とそれに続く次の不織布とが所
定の幅でオーバーラップするようにして略Z状に折り畳
んだそれぞれの不織布を示す。図5の(b)において、
12は容器を示し、13は容器12の開口部を示し、1
5a,15b,15c,15d,・・・は、一枚の不織
布とそれに続く次の不織布とが所定の幅(約半分の部
分)でオーバーラップするようにして2つ折りにした不
織布を示す。図5では、各不織布のオーバーラップ状態
がわかるように、それぞれの不織布を実線と点線で交互
に記載している。なお、図5では不織布における凹凸模
様の記載を省略している。
When the nonwoven fabric of the present invention is cut into a predetermined size, and a large number of the nonwoven fabrics are stacked and accommodated in a container, the nonwoven fabric can be taken out of the container one by one. There is no "slipping" that occurs. Therefore, the nonwoven fabric of the present invention can be suitably used as a container-containing nonwoven fabric. When the nonwoven fabric of the present invention is used in the form of a container-containing nonwoven fabric, the nonwoven fabric cut into a predetermined size is folded so that some of its ends and the like are overlapped so that the nonwoven fabric can be sequentially taken out one by one. A method of accommodating in such as is adopted. The folding method at that time is not particularly limited, and any folding method may be used as long as the nonwoven fabric can be taken out one by one. Although not limited in any way, examples of the folding method of the container-containing nonwoven fabric include a Z-shaped folding as exemplified in the schematic diagram of FIG. 5A and a schematic diagram of FIG. 5B. Folding and the like can be given. In FIG. 5A, reference numeral 12 denotes a container, reference numeral 13 denotes an opening of the container 12, and reference numerals 14a, 14b, 14c, 14d,. Each of the nonwoven fabrics is folded in a substantially Z-shape such that the nonwoven fabrics overlap with a predetermined width. In FIG. 5B,
12 indicates a container, 13 indicates an opening of the container 12, and 1
Reference numerals 5a, 15b, 15c, 15d,... Denote nonwoven fabrics that are folded in two so that one nonwoven fabric and the next nonwoven fabric overlap with a predetermined width (about a half portion). In FIG. 5, the respective nonwoven fabrics are alternately shown by a solid line and a dotted line so that the overlapping state of each nonwoven fabric can be understood. In FIG. 5, the description of the uneven pattern on the nonwoven fabric is omitted.

【0034】[0034]

【実施例】以下に実施例などにより本発明について具体
的に説明するが、本発明は、以下の例により何ら限定さ
れない。以下の例において、不織布における凸部および
凹部の見掛け密度、凸部および凹部の厚さ、凹凸模様の
ピッチ、不織布の強力および伸度、不織布間の分離強力
の測定、並びに不織布の汚れの拭き取り性の評価は次の
ようにして行った。
EXAMPLES The present invention will be specifically described below with reference to examples and the like, but the present invention is not limited to the following examples. In the following examples, the apparent densities of the convex portions and concave portions in the nonwoven fabric, the thickness of the convex portions and concave portions, the pitch of the concave and convex pattern, the strength and elongation of the nonwoven fabric, the measurement of the separation strength between the nonwoven fabrics, and the wiping property of the stain of the nonwoven fabric Was evaluated as follows.

【0035】(1)不織布における凸部および凹部の見
掛け密度: (i) 不織布から幅×長さ=1m×1mの試験片を切
り取り、その質量を計って、目付を測定する。 (ii)走査型電子顕微鏡で不織布の断面を写真撮影し、
断面積を測定して、平均密度を算出する。 (iii)凸部の高さおよび繊維本数、並びに凹部の高さ
および繊維本数を測定し、凸部および凹部の密度比を求
め、上記(ii)で算出した平均密度から比例配分により
凸部および凹部の密度を算出した。
(1) Apparent density of protrusions and recesses in nonwoven fabric: (i) A test piece of width × length = 1 m × 1 m is cut out of the nonwoven fabric, and its mass is measured to determine the basis weight. (Ii) photograph a cross section of the nonwoven fabric with a scanning electron microscope,
Measure the cross-sectional area and calculate the average density. (Iii) The height and the number of fibers of the convex portions, and the height and the number of fibers of the concave portions are measured, the density ratio of the convex portions and the concave portions is obtained, and the convex portions and the convex portions are proportionally distributed from the average density calculated in the above (ii). The density of the recess was calculated.

【0036】(2)不織布における凸部および凹部の厚
さ:走査型電子顕微鏡で不織布の断面を写真撮影し、凸
部および凹部の厚さを測定した。
(2) Thickness of convex and concave portions in nonwoven fabric: A cross section of the nonwoven fabric was photographed with a scanning electron microscope, and the thickness of the convex and concave portions was measured.

【0037】(3)不織布おける凹凸模様のピッチ:ノ
ギスにて測定した。
(3) Pitch of uneven pattern on non-woven fabric: Measured with a vernier caliper.

【0038】(4)不織布の強力および伸度:不織布を
切断して、長さ×幅=200mm×50mmの試験片を
つくり、この試験片の長さ方向の両端を強伸度測定装置
(島津製作所製「オートグラフAGS−50D」)のチ
ャックにて把持し(チャック間距離100mm)、ヘッ
ド速度200mm/分の条件下で、JIS L−108
5に準じて、不織布の強力および伸度を測定した。
(4) Strength and elongation of non-woven fabric: A non-woven fabric was cut to prepare a test piece having a length × width = 200 mm × 50 mm, and both ends of the test piece in the longitudinal direction were measured with a strong elongation measuring device (Shimadzu). (Autograph AGS-50D manufactured by Seisakusho Co., Ltd.)) (with a chuck distance of 100 mm) and a head speed of 200 mm / min.
According to No. 5, the strength and elongation of the nonwoven fabric were measured.

【0039】(5)不織布間の分離強力: (i) 不織布を切断して、長さ方向寸法150mmお
よび幅方向寸法200mmの試験片を90枚つくり、該
90枚の試験片を、上下に重なり合う試験片の一方の端
部が幅方向に沿って15mmの寸法でオーバーラップさ
せて、図5に示すようにして重ねた後、重ねた不織布
を、パラオキシ安息香酸エステルを8質量%および塩化
セチルピリジニウムを10質量%含有する水溶液中に浸
漬して(浴比1:2.6)、24時間放置して、不織布
中に該水溶液を十分に浸透させた。 (ii) 次いで、前記湿潤状態で、強伸度測定装置(島
津製作所製「オートグラフAGS−50D」)を使用し
て、そのオーバーラップ部を含む上部不織布と下部不織
布を2個のチャックでチャック間距離150mmにて把
持し、ヘッド速度200mm/分の速度で、上下に重な
り合う試験片間の分離強力を測定した。 (iii) 前記(ii)の測定を、5回繰り返して行い、
その平均値を採って、分離強力とした。
(5) Separation strength between non-woven fabrics: (i) The non-woven fabric is cut to form 90 test pieces having a length dimension of 150 mm and a width dimension of 200 mm, and the 90 test pieces are vertically overlapped. One end of the test piece was overlapped with a size of 15 mm along the width direction, and the test pieces were stacked as shown in FIG. 5. Then, the stacked nonwoven fabric was formed by adding 8% by mass of paraoxybenzoic acid ester and cetylpyridinium chloride. Was immersed in an aqueous solution containing 10% by mass (bath ratio 1: 2.6) and allowed to stand for 24 hours to allow the aqueous solution to sufficiently penetrate into the nonwoven fabric. (Ii) Next, in the above-mentioned wet state, the upper nonwoven fabric including the overlap portion and the lower nonwoven fabric are chucked by two chucks using a high elongation measuring device (“Autograph AGS-50D” manufactured by Shimadzu Corporation). The separation strength between the vertically overlapping test specimens was measured at a head speed of 200 mm / min while gripping at a distance of 150 mm. (Iii) The measurement of (ii) is repeated five times,
The average value was taken as the separation strength.

【0040】(6)不織布の汚れ拭き取り性:スポイト
で一滴の墨汁を滴下した透明なアクリル板上を、幅×長
さ=25mm×100mmの試験片の一端上に200g
の分銅を載せて0.5m/分の速度で移動させて墨汁を
拭き取り、墨汁を滴下した位置から100mm通過した
位置でのアクリル板の光透過率を測定し、ブランクのア
クリル板の光透過率(100%)に対する拭き取った前
記箇所での光透過率の割合を求めて、汚れ拭き取り性の
評価を行った。
(6) Wipeability of non-woven fabric: 200 g on one end of a test piece of width × length = 25 mm × 100 mm on a transparent acrylic plate on which a drop of black ink was dropped with a dropper.
Is placed at a speed of 0.5 m / min to wipe off the ink, the light transmittance of the acrylic plate is measured at a position 100 mm from the position where the ink was dropped, and the light transmittance of the blank acrylic plate is measured. The ratio of the light transmittance at the wiped portion relative to (100%) was determined, and the dirt wiping property was evaluated.

【0041】《実施例1》 (1) レーヨン繊維(単繊維繊度1.7dtex、繊
維長40mm)を60質量部、ポリエチレンテレフタレ
ートを芯成分としてポリエチレンを鞘成分とする低温融
着性芯鞘型複合紡糸繊維(芯成分:鞘成分の質量比=
1:1)(以下「PET/PE芯鞘繊維」という)(単
繊維繊度2.2dtex、繊維長51mm)を30質量
部およびポリエチレンテレフタレート繊維(以下「PE
T繊維」という)(単繊維繊度2.2dtex、繊維長
51mm)を10質量部の割合で用いて均一に混綿した
後、目付け4g/m2のカードウエブを常法により作製
し、このカードウエブを開口率25%、穴径0.3mm
のパンチングドラム支持体上に載置して速度80mm/
分で長手方向に連続的に移送すると同時に、上方から高
圧水流を噴射して交絡処理を行って、交絡した繊維ウエ
ブ(織布)を製造した。この交絡処理に当たっては、穴
径0.12mmのオリフィスをウエブの幅方向に沿って
0.7mmの間隔で設けてあるノズル3本を使用し(隣
接するノズル間の距離20cm)、1列目(上流側)の
ノズルから噴射した高圧水流の水圧を35kg/c
2、2列目(中間位置)のノズルから噴射した高圧水
流の水圧を40kg/cm2、3列目(下流側)のノズ
ルから噴射した水圧を45kg/cm2として行った。
Example 1 (1) Low-temperature-fusible core-sheath composite having 60 parts by mass of rayon fiber (single fiber fineness: 1.7 dtex, fiber length: 40 mm), polyethylene terephthalate as a core component and polyethylene as a sheath component Spun fiber (mass ratio of core component: sheath component =
1: 1) (hereinafter referred to as “PET / PE core-sheath fiber”) (single fiber fineness: 2.2 dtex, fiber length: 51 mm) and 30 parts by mass of polyethylene terephthalate fiber (hereinafter “PE”).
T-fiber) (single fiber fineness: 2.2 dtex, fiber length: 51 mm) was uniformly mixed at a ratio of 10 parts by mass, and then a card web having a basis weight of 4 g / m 2 was prepared by an ordinary method. The aperture ratio is 25% and the hole diameter is 0.3mm
At a speed of 80 mm /
At the same time, the fiber web (woven fabric) was entangled by injecting a high-pressure water stream from above and performing entanglement treatment. In this confounding process, three nozzles having orifices with a hole diameter of 0.12 mm provided at intervals of 0.7 mm along the width direction of the web (distance between adjacent nozzles of 20 cm) are used in the first row ( The water pressure of the high-pressure water jet injected from the nozzle (upstream side) is 35 kg / c.
m 2 , the water pressure of the high-pressure water stream jetted from the nozzles in the second row (intermediate position) was 40 kg / cm 2 , and the water pressure jetted from the nozzles in the third row (downstream) was 45 kg / cm 2 .

【0042】(2) 上記(1)で得られた不織布(交
絡した繊維ウエブ)を、図4に示すような、細かい網目
を有する全体に平坦な網体10aの上に杉綾状の網体1
0bを重ねた凹凸模様を有する支持体上に載置して連続
的に移送すると共に高圧水流を噴射して交絡処理を行っ
て、不織布を構成する繊維を更に交絡させると共に、不
織布に凹凸模様を形成させた後、130℃で乾燥して、
図2の(a)に示すような、杉綾状の凹凸模様を有する
不織布を製造した。なお、凹凸模様を形成させるための
この交絡処理は、穴径0.10mmのオリフィスをウエ
ブの幅方向に沿って0.7mmの間隔で設けてあるノズ
ル1本を使用して、高圧水流の水圧35kg/cm2
条件下で行った。
(2) The nonwoven fabric (entangled fiber web) obtained in the above (1) is put on a generally flat net 10a having a fine mesh as shown in FIG.
0b is placed on a support having an embossed pattern that is superimposed and continuously transported, and at the same time, a high-pressure water stream is jetted to perform an entanglement treatment to further entangle the fibers constituting the nonwoven fabric, and the unevenness pattern is formed on the nonwoven fabric. After being formed, dried at 130 ° C.
A nonwoven fabric having a cedar-like uneven pattern as shown in FIG. 2A was manufactured. The confounding treatment for forming the concavo-convex pattern is performed by using a single nozzle having orifices having a hole diameter of 0.10 mm provided at intervals of 0.7 mm along the width direction of the web, using a water pressure of a high-pressure water flow. The test was performed under the condition of 35 kg / cm 2 .

【0043】(3) 上記(2)で得られた杉綾状の凹
凸模様を有する不織布は、目付けが40g/m2であ
り、その凹凸模様の凸部が角のない隆起形状を有し、凸
部の見掛け密度(B1)が0.058g/cm3、凹部の
見掛け密度(B2)が0.046g/cm3であり(B1
/B2=1.26)、凸部の見掛け密度が凹部の見掛け
密度よりも大きいものであった。また、この不織布は、
凸部の厚さ(C1)が0.72mm、凹部の厚さ(C2
が0.54mmであり(C2/C1=0.75)、杉綾状
の凹凸模様における斜め方向の凹凸のピッチDが2.
5、長さ方向の凹凸のピッチE13mmであった。 (4) 上記(2)で得られた杉綾状の凹凸模様を有す
る不織布について、強力および伸度、不織布間の分離強
力並びに汚れ拭き取り性を上記した方法で測定または評
価したところ、下記の表1に示すとおりであった。
(3) The nonwoven fabric having a cedar-like uneven pattern obtained in the above (2) has a basis weight of 40 g / m 2 , the convex portion of the uneven pattern has a raised shape with no corners, part apparent density (B 1) is 0.058 g / cm 3, the recess of the apparent density (B 2) is 0.046g / cm 3 (B 1
/ B 2 = 1.26), and the apparent density of the convex portions was higher than the apparent density of the concave portions. In addition, this nonwoven fabric
The thickness of the projection (C 1 ) is 0.72 mm, and the thickness of the depression (C 2 )
There is a 0.54mm (C 2 / C 1 = 0.75), the pitch D in the diagonal direction of the projections and depressions of the herringbone shaped undulations pattern 2.
5. The pitch E of the unevenness in the length direction was 13 mm. (4) The nonwoven fabric having a cedar-like uneven pattern obtained in the above (2) was measured or evaluated for the strength and elongation, the separation strength between the nonwoven fabrics and the dirt wiping property by the above-mentioned methods. Was as shown in FIG.

【0044】《比較例1》 (1) 実施例1の(1)で得られた不織布(交絡した
繊維ウエブ)を、凹凸模様のない、全体に平坦な網状支
持体(日本フィルコン株式会社製のフラット柄の網状支
持体)の上に載置して連続的に移送すると共に、実施例
1の(2)におけるのと同じ条件下に高圧水流を用いて
交絡処理して不織布を製造した後、130℃で乾燥し
て、凹凸模様のない全体がほぼ平坦な、目付け40g/
2、厚みが0.48mmの凹凸のない不織布を製造し
た。 (2) 上記(1)で得られた不織布について、強力お
よび伸度、不織布間の分離強力、並びに汚れ拭き取り性
を上記した方法で測定または評価したところ、下記の表
1に示すとおりであった。
<< Comparative Example 1 >> (1) The nonwoven fabric (entangled fiber web) obtained in (1) of Example 1 was applied to a flat net-like support having no uneven pattern (manufactured by Nippon Filcon Co., Ltd.). After being placed on a flat-patterned net-like support) and continuously transported, and entangled with a high-pressure water stream under the same conditions as in (2) of Example 1 to produce a nonwoven fabric, After drying at 130 ° C., the entire surface is almost flat without irregularities, and has a basis weight of 40 g /
A nonwoven fabric with m 2 and a thickness of 0.48 mm without irregularities was produced. (2) The nonwoven fabric obtained in the above (1) was measured or evaluated for the strength and elongation, the separation strength between the nonwoven fabrics, and the dirt wiping property as described above. .

【0045】《比較例2》 (1) 比較例1で得られた凹凸模様のない平坦な不織
布を、図6の(a)に示すような菱形状の凸部16を有
するエンボスローラ(圧着面積26%)を用いて、線圧
50kg/cm、温度135℃、処理速度70m/分で
エンボス処理して、凹凸模様を有する、目付け40g/
2の不織布を製造した。これにより得られた不織布
は、エンボスローラの凸部16によって押圧された箇所
が、図6の(b)に示すように、ほぼ菱形状の角のある
凹部17として凹んだ構造を有しており、凹部17にお
ける対角線の長さは約0.7mm、凹部17の深さは約
0.9mm、凹部17の厚さ(凹部17の底部の厚さ)
は0.105mm、不織布全体の厚さ(凸部の厚さ)d
は0.35mmであった。また、この不織布では、凹ん
だ凹部17(凹部17の底部)の見掛け密度が0.95
g/cm3であり、凹んでいない部分(凸部)18の見
掛け密度は0.085g/cm3であり、凸部の見掛け
密度が凹部の見掛け密度よりも小さいものであった。 (2) 上記(1)で得られた不織布について、強力お
よび伸度、不織布間の分離強力、並びに汚れ拭き取り性
を上記した方法で測定または評価したところ、下記の表
1に示すとおりであった。
<< Comparative Example 2 >> (1) The flat nonwoven fabric having no uneven pattern obtained in Comparative Example 1 was embossed with a diamond-shaped convex portion 16 as shown in FIG. 26%), and embossed at a linear pressure of 50 kg / cm, a temperature of 135 ° C., and a processing speed of 70 m / min.
It was prepared m 2 nonwoven. The nonwoven fabric thus obtained has a structure in which the portion pressed by the convex portion 16 of the embossing roller is depressed as a substantially rhombus-shaped concave portion 17 as shown in FIG. 6B. The length of the diagonal line in the recess 17 is about 0.7 mm, the depth of the recess 17 is about 0.9 mm, and the thickness of the recess 17 (the thickness of the bottom of the recess 17).
Is 0.105 mm, the thickness of the entire nonwoven fabric (thickness of the convex portion) d
Was 0.35 mm. Further, in this nonwoven fabric, the apparent density of the recessed recess 17 (the bottom of the recess 17) is 0.95.
a g / cm 3, an apparent density of recessed portions not (convex) 18 is 0.085 g / cm 3, an apparent density of the protrusions was smaller than the apparent density of the recesses. (2) The nonwoven fabric obtained in the above (1) was measured or evaluated for the strength and elongation, the separation strength between the nonwoven fabrics, and the dirt wiping property as described above. .

【0046】《比較例3》 (1) 比較例1で得られた凹凸模様のない平坦な不織
布を、図7の(a)に示すような、円形の穴(窪み)
(直径5.5mm、深さ2.0mm)19を有するエン
ボスローラ(圧着面積25%)を用いて、線圧50kg
/cm、温度135℃、処理速度70m/分でエンボス
処理して、凹凸模様を有する、目付け40g/m2の不
織布を製造した。これにより得られた不織布は、図7の
(b)に示すように、エンボスローラの円形の穴19に
相当する部分が角のある短円柱状の凸部20として隆起
した構造を有していた。この不織布は、凸部20のない
部分21の厚さdが0.05mmで、凸部20のある部
分の厚さhが0.20mmであり、凸部20のある部分
の見掛け密度が0.020g/cm3で、凸部のない部
分21の見掛け密度が0.80g/cm3であり、凸部
20のある部分の見掛け密度が凸部のない部分(凹部)
21の見掛け密度よりも小さいものであった。 (2) 上記(1)で得られた不織布について、強力お
よび伸度、不織布間の分離強力、並びに汚れ拭き取り性
を上記した方法で測定または評価したところ、下記の表
1に示すとおりであった。
<< Comparative Example 3 >> (1) The flat non-woven fabric having no uneven pattern obtained in Comparative Example 1 was used as a circular hole (dent) as shown in FIG.
(5.5 mm in diameter, 2.0 mm in depth) Using an embossing roller (crimping area: 25%) having a linear pressure of 50 kg
/ Cm, a temperature of 135 ° C. and a processing speed of 70 m / min to produce a nonwoven fabric having an uneven pattern and a basis weight of 40 g / m 2 . As shown in FIG. 7B, the nonwoven fabric thus obtained had a structure in which a portion corresponding to the circular hole 19 of the embossing roller was raised as a short cylindrical projection 20 having corners. . In this nonwoven fabric, the thickness d of the portion 21 without the convex portion 20 is 0.05 mm, the thickness h of the portion with the convex portion 20 is 0.20 mm, and the apparent density of the portion with the convex portion 20 is 0.1 mm. in 020g / cm 3, an apparent density of no protrusion portion 21 is 0.80 g / cm 3, part apparent density of the portion of the protrusion 20 is no projection (recess)
21 was smaller than the apparent density. (2) The nonwoven fabric obtained in the above (1) was measured or evaluated for the strength and elongation, the separation strength between the nonwoven fabrics, and the dirt wiping property as described above. .

【0047】[0047]

【表1】 [Table 1]

【0048】上記の表1の結果から、実施例1の凹凸模
様を有する不織布は、凸部が角のない滑らかな隆起形状
を有し、且つ凸部の見掛け密度(B1)が凹部の見掛け
密度(B2)よりも大きいことにより、比較例1の凹凸
模様を有していない不織布、比較例2および3の凸部の
見掛け密度(B1)が凹部の見掛け密度(B2)よりも小
さいエンボス加工により得られた凹凸模様を有する不織
布に比べて、不織布間の分離強力が小さくて分離性に優
れていること、さらには汚れの拭き取り性にも優れてい
ることがわかる。
From the results shown in Table 1 above, the nonwoven fabric having a concavo-convex pattern of Example 1 has a smooth protruding shape with no convex corners, and the apparent density (B 1 ) of the convex part is the apparent density of the concave part. Since the density is higher than the density (B 2 ), the apparent density (B 1 ) of the projections of Comparative Example 1 and Comparative Examples 2 and 3 is smaller than the apparent density (B 2 ) of the depressions. It can be seen that the separation strength between the nonwoven fabrics is small and excellent in separability as compared with a nonwoven fabric having a concavo-convex pattern obtained by a small embossing process, and it is also excellent in dirt wiping properties.

【0049】[0049]

【発明の効果】本発明の凹凸模様を有する不織布は、凸
部が角のない滑らかな隆起形状を有し、しかも凸部の見
掛け密度が凹部の見掛け密度よりも大きくて、凸部によ
り多くの繊維が集合した状態で不織布を構成する繊維同
士が交絡していて、凸部が潰れにくく且つ弾力性に優れ
ている。そのため、本発明の不織布を複数枚積み重ねた
ときに、不織布間の接触面積が低減し、その状態が凸部
が潰れにくいことにより不織布の重みによっても変化せ
ず、さらには不織布間の引っ掛かりが防止され、不織布
を容器などから一枚ずつ確実に取り出すことができ、し
かも一枚の不織布の取り出しと併せて次の不織布の端部
を容器の取り出し口から適量突出させることができる。
本発明の不織布では、該不織布を用いての清掃時や拭き
取り時に、被清掃面や被拭き取り面にまず最初に接触す
る凸部の見掛け密度が高くて、凸部により多くの繊維が
存在し且つ凸部が潰れにくいので、本発明の不織布を清
掃や拭き取りなどの用途に用いた場合には、清掃性能、
拭き取り性能、液体などの吸収性能に極めて優れてい
る。
According to the nonwoven fabric having a concavo-convex pattern of the present invention, the convex portions have a smooth raised shape with no corners, and the apparent density of the convex portions is larger than the apparent density of the concave portions. The fibers constituting the nonwoven fabric are entangled with each other in a state where the fibers are aggregated, so that the convex portions are not easily crushed and have excellent elasticity. Therefore, when a plurality of non-woven fabrics of the present invention are stacked, the contact area between the non-woven fabrics is reduced, and the state is not changed by the weight of the non-woven fabric due to the fact that the convex portions are not easily crushed, and furthermore, the trapping between the non-woven fabrics is prevented. Thus, the nonwoven fabric can be reliably taken out of the container or the like one by one, and the end of the next nonwoven fabric can be protruded from the takeout opening of the container by an appropriate amount in conjunction with taking out one nonwoven fabric.
In the nonwoven fabric of the present invention, at the time of cleaning or wiping using the nonwoven fabric, the apparent density of the convex portion that first comes into contact with the surface to be cleaned or the surface to be wiped is high, and more fibers are present in the convex portion; Since the convex portion is hard to be crushed, when the nonwoven fabric of the present invention is used for cleaning or wiping, the cleaning performance,
Extremely excellent in wiping performance and liquid absorption performance.

【0050】本発明の不織布では、エンボス加工による
従来の凹凸模様を有する不織布と異なり、凹部が強く圧
縮されておらず、極端に薄くなっていないので、汚物な
どが凹部を通して通過しにくく、手などの汚れが生じに
くい。本発明の水性組成物を含浸または被覆した本発明
の不織布では、繊維がより多く存在する凸部に該水性組
成物がより多く含浸または被覆されており、そのような
凸部が被清掃面や被拭き取り面にまず最初に接触するの
で、清掃や拭き取りをより円滑に行うことができる。繊
維ウエブを凹凸模様を支持体上に載置して流体を噴射し
て交絡処理する本発明の方法により、上記した優れた特
性を有する本発明の不織布を、極めて簡単に且つ円滑に
製造することができる。
In the nonwoven fabric of the present invention, unlike the conventional nonwoven fabric having a concavo-convex pattern formed by embossing, the concave portions are not strongly compressed and are not extremely thin, so that dirt and the like hardly pass through the concave portions, and the hand Dirt is less likely to occur. In the nonwoven fabric of the present invention impregnated or coated with the aqueous composition of the present invention, more convex portions where more fibers are present are impregnated or coated with the aqueous composition, and such convex portions are the surface to be cleaned or Since the surface to be wiped is first contacted, cleaning and wiping can be performed more smoothly. The nonwoven fabric of the present invention having the above-mentioned excellent properties can be produced very easily and smoothly by the method of the present invention in which a fiber web is placed on a support with an uneven pattern and a fluid is jetted to carry out a entanglement treatment. Can be.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の凹凸模様を有する不織布の例を示す図
(断面図)である。
FIG. 1 is a diagram (cross-sectional view) showing an example of a nonwoven fabric having a concavo-convex pattern according to the present invention.

【図2】本発明の不織布における凹凸模様の例を示す図
(平面図)である。
FIG. 2 is a diagram (plan view) showing an example of an uneven pattern in the nonwoven fabric of the present invention.

【図3】本発明の不織布の製造方法の概略を示す図であ
る。
FIG. 3 is a view schematically showing a method for producing a nonwoven fabric of the present invention.

【図4】本発明の凹凸模様を有する不織布の製造に用い
る凹凸模様を有する支持体の一例を示す図である。
FIG. 4 is a view showing an example of a support having an uneven pattern used for producing a nonwoven fabric having an uneven pattern according to the present invention.

【図5】本発明の不織布を容器に収容したものの例を示
すである。
FIG. 5 shows an example in which the nonwoven fabric of the present invention is contained in a container.

【図6】比較例2で用いたエンボスローラの概略図およ
び比較例2で得られた凹凸模様を有する不織布の概略図
である。
FIG. 6 is a schematic diagram of an emboss roller used in Comparative Example 2 and a schematic diagram of a nonwoven fabric having a concavo-convex pattern obtained in Comparative Example 2.

【図7】比較例3で用いたエンボスローラの概略図およ
び比較例3で得られた凹凸模様を有する不織布の概略図
である。
FIG. 7 is a schematic view of an emboss roller used in Comparative Example 3 and a schematic view of a nonwoven fabric having a concavo-convex pattern obtained in Comparative Example 3.

【符号の説明】[Explanation of symbols]

A 凹凸模様を有する不織布 1 凸部 2 凹部 3 杉綾状の凹凸模様における斜め方向の凹部の最も深
い部分 4 杉綾状の凹凸模様における長さ方向の凹部の最も深
い部分 5 並列斜線状の凹凸模様における斜め方向の凹部の最
も深い部分 6 格子状の凹凸模様における縦方向または横方向の凹
部の最も深い部分 7 スクエアー状の凹凸模様における円形に窪んだ凹部 8 スタッガー状の凹凸模様における8は円形に窪んだ
凹部 9 凹凸模様を形成させる前の繊維ウエブ 10 凹凸模様を有する支持体 11 噴射流体 12 容器 13 容器の開口部 14 略Z状に折り畳んだ凹凸模様を有する不織布 15 2つ折りにした凹凸模様を有する不織布 16 エンボスローラの凸部 17 不織布における凹部 18 不織布における凹んでいない部分 19 エンボスローラにおける円形の穴 20 不織布における凸部 21 不織布における凸部のない部分
A Nonwoven fabric having a concave-convex pattern 1 convex portion 2 concave portion 3 deepest portion of diagonal concave portion in cedar-shaped uneven pattern 4 deepest portion of longitudinal concave portion in cedar-shaped uneven pattern 5 in parallel diagonal hatched pattern Deepest part of diagonal concave part 6 Deepest part of vertical or horizontal concave part in lattice-like concave-convex pattern 7 Round concave part in square-shaped concave-convex pattern 8 8 in stagger-shaped concave-convex pattern is circular concave Depressed portion 9 Fiber web before forming uneven pattern 10 Support having uneven pattern 11 Injected fluid 12 Container 13 Container opening 14 Nonwoven fabric having uneven pattern folded in substantially Z shape 15 Having uneven pattern folded in two Non-woven fabric 16 Convex portion of emboss roller 17 Depressed portion of non-woven fabric 18 Non-dented portion of non-woven fabric 19 Emboss Part no protrusions of the raised portion 21 the nonwoven in a circular hole 20 nonwoven fabrics over La

───────────────────────────────────────────────────── フロントページの続き Fターム(参考) 3B074 AA01 AA02 AA08 AB01 AC02 AC03 CC03 3B154 AA07 AA12 AA17 AA18 AB22 BA38 BB33 BC41 BF06 BF11 DA13 DA30 4L047 AA12 AA21 AA27 AA28 AA29 BA04 CA12 CA14 CA19 CB01 CB02 CB07 CB10 CC16  ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3B074 AA01 AA02 AA08 AB01 AC02 AC03 CC03 3B154 AA07 AA12 AA17 AA18 AB22 BA38 BB33 BC41 BF06 BF11 DA13 DA30 4L047 AA12 AA21 AA27 AA28 AA29 BA04 CA12 CB10 CB10

Claims (11)

【特許請求の範囲】[Claims] 【請求項1】 凹凸模様を有する不織布であって、凹凸
模様の凸部が角のない隆起形状を有し、且つ凸部の見掛
け密度(B1)が凹部の見掛け密度(B2)よりも大きい
ことを特徴とする不織布。
1. A nonwoven fabric having an uneven pattern, wherein a convex portion of the uneven pattern has a raised shape with no corners, and an apparent density (B 1 ) of the convex portion is higher than an apparent density (B 2 ) of the concave portion. Nonwoven fabric characterized by being large.
【請求項2】 凸部の見掛け密度(B1)と凹部の見掛
け密度(B2)の比(B1/B2)が1.05〜8である
請求項1に記載の不織布。
2. The nonwoven fabric according to claim 1, wherein the ratio (B 1 / B 2 ) of the apparent density (B 1 ) of the convex portions to the apparent density (B 2 ) of the concave portions is 1.05 to 8.
【請求項3】 凹凸模様における凸部の厚さ(C1)に
対する凹部の厚さ(C2)の比(C2/C1)が0.1〜
0.9である請求項1または2に記載の不織布。
3. A ratio (C 2 / C 1 ) of the thickness (C 2 ) of the concave portion to the thickness (C 1 ) of the convex portion in the concave-convex pattern is from 0.1 to 0.1.
The nonwoven fabric according to claim 1 or 2, wherein the ratio is 0.9.
【請求項4】 凹凸模様が、杉綾状の凹凸模様、並列斜
線状の凹凸模様、格子状の凹凸模様、スクエアー状の凹
凸模様、スタッガー状の凹凸模様または前記した凹凸模
様のうちの2つ以上が組合わさった凹凸模様である請求
項1〜3のいずれか1項に記載の不織布。
4. The uneven pattern is a cedar-like uneven pattern, a parallel diagonal uneven pattern, a lattice uneven pattern, a square uneven pattern, a staggered uneven pattern, or two or more of the above-described uneven patterns. The nonwoven fabric according to any one of claims 1 to 3, wherein the nonwoven fabric is a combined uneven pattern.
【請求項5】 杉綾状の凹凸模様における斜め方向の凹
凸のピッチが1.5〜3.5mmで且つ長さ方向の凹凸
のピッチが10〜35mmであり、並列斜線状の凹凸模
様における並列斜線状の凹凸のピッチが1.5〜3.5
mmであり、格子状の凹凸模様における縦方向および横
方向の凹凸のピッチが1.5〜3.5mmであり、スク
エアー状の凹凸模様における凹凸のピッチが0.15〜
0.61mmであり、スタッガー状の凹凸模様における
凹凸のピッチが0.15〜0.61mmである請求項4
に記載の不織布。
5. The parallel diagonal lines in the parallel diagonal uneven pattern, wherein the pitch of diagonal irregularities in the cedar-like irregular pattern is 1.5 to 3.5 mm and the pitch of longitudinal irregularities is 10 to 35 mm. The pitch of the irregularities is 1.5 to 3.5
mm, the pitch of the unevenness in the vertical and horizontal directions in the lattice-shaped uneven pattern is 1.5 to 3.5 mm, and the pitch of the unevenness in the square uneven pattern is 0.15 to
The pitch of the unevenness in the staggered uneven pattern is 0.15 to 0.61 mm.
2. The nonwoven fabric according to 1.
【請求項6】 目付けが15〜100g/m2であり、
凹凸模様における凸部の厚さが0.3〜3.0mmであ
り、凹部の厚さが0.2〜1.2mmである請求項1〜
5のいずれか1項に記載の不織布。
6. A basis weight of 15 to 100 g / m 2 ,
The thickness of a convex part in an uneven | corrugated pattern is 0.3-3.0 mm, and the thickness of a recessed part is 0.2-1.2 mm.
6. The nonwoven fabric according to any one of items 5 to 5.
【請求項7】 不織布の質量に基づいて、親水性繊維を
10質量%以上含有する請求項1〜6のいずれか1項に
記載の不織布。
7. The nonwoven fabric according to any one of claims 1 to 6, comprising 10% by mass or more of hydrophilic fibers based on the mass of the nonwoven fabric.
【請求項8】 水性液体組成物または非水性液体組成物
を含浸してなる請求項1〜7のいずれか1項に記載の不
織布。
8. The nonwoven fabric according to claim 1, which is impregnated with an aqueous liquid composition or a non-aqueous liquid composition.
【請求項9】 繊維ウエブを、凹凸模様を有する支持体
上に載置した状態で、繊維ウエブの上方から流体を噴射
して交絡処理することを特徴とする、請求項1に記載の
不織布の製造方法。
9. The nonwoven fabric according to claim 1, wherein, while the fiber web is placed on a support having an uneven pattern, a fluid is jetted from above the fiber web to perform an entanglement treatment. Production method.
【請求項10】 請求項1〜8のいずれか1項の不織布
を用いてなる清掃用品または拭き取り用品。
10. A cleaning article or a wiping article using the nonwoven fabric according to claim 1. Description:
【請求項11】 所定の寸法に裁断した請求項1〜8の
いずれか1項の不織布の複数枚を、1枚ずつ順次取り出
せるように一部をオーバーラップさせて折り畳んで容器
内に収容したことを特徴とする容器収容不織布。
11. A non-woven fabric according to any one of claims 1 to 8, which is cut into a predetermined size, partially overlapped and folded so as to be taken out one by one, and housed in a container. A container-containing nonwoven fabric characterized by the above.
JP2001048321A 2001-02-23 2001-02-23 Non-woven Expired - Lifetime JP4548814B2 (en)

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