JPH0522544B2 - - Google Patents
Info
- Publication number
- JPH0522544B2 JPH0522544B2 JP60269058A JP26905885A JPH0522544B2 JP H0522544 B2 JPH0522544 B2 JP H0522544B2 JP 60269058 A JP60269058 A JP 60269058A JP 26905885 A JP26905885 A JP 26905885A JP H0522544 B2 JPH0522544 B2 JP H0522544B2
- Authority
- JP
- Japan
- Prior art keywords
- staple fibers
- fibers
- denier
- web
- split
- 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.)
- Expired - Lifetime
Links
- 239000000835 fiber Substances 0.000 claims description 72
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 239000002131 composite material Substances 0.000 claims description 10
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 229920001169 thermoplastic Polymers 0.000 claims description 7
- 238000005507 spraying Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 description 12
- 239000004745 nonwoven fabric Substances 0.000 description 9
- 238000009960 carding Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000004677 Nylon Substances 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920001778 nylon Polymers 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 206010021639 Incontinence Diseases 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000001124 body fluid Anatomy 0.000 description 1
- 239000010839 body fluid Substances 0.000 description 1
- 206010061592 cardiac fibrillation Diseases 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002600 fibrillogenic effect Effects 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
Landscapes
- Absorbent Articles And Supports Therefor (AREA)
- Nonwoven Fabrics (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、使い捨ておむつ、失禁パツド、生理
用ナプキンなどの体液処理用に供する衛生物品の
表面を構成するために用いる不織布である表面シ
ートの製造方法に関する。Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a surface sheet, which is a nonwoven fabric, used to constitute the surface of sanitary articles used for treating body fluids, such as disposable diapers, incontinence pads, and sanitary napkins. Regarding the manufacturing method.
（従来の技術）
従来、衛生物品の表面シートとして柔軟で肌さ
わりの良い不織布を得るには、少なくとも該不織
布の表面層を構成する繊維として細デニールのも
のを用いることが提案されている（例えば、特開
昭57−56562号）。(Prior Art) Conventionally, in order to obtain a nonwoven fabric that is flexible and feels good on the skin as a surface sheet for sanitary articles, it has been proposed to use fine denier fibers as the fibers constituting at least the surface layer of the nonwoven fabric (for example, , Japanese Patent Publication No. 57-56562).
一方、後述する本発明方法に用いる分割型複合
繊維であるステープルフアイバーをカード機で処
理することにより細デニールに分割し、これを不
織布の素材として用いることが提案されている
（例えば、特開昭59−100750号）。 On the other hand, it has been proposed that staple fibers, which are splittable conjugate fibers used in the method of the present invention to be described later, be divided into fine denier pieces by processing with a card machine and used as a material for nonwoven fabrics (for example, 59-100750).
（発明が解決しようとする問題点）
細デニールの繊維は、紡糸安定性、カード性に
劣り、高速生産される不織布の素材としては、せ
いぜい１デニールまでのものが限界である。した
がつて、１デニール以下の繊維を含む繊維からな
る前記表面シートは、実用に供されておらず、肌
ざわりなどにおいて満足すべきものではない。(Problems to be Solved by the Invention) Fine denier fibers are inferior in spinning stability and carding properties, and as materials for nonwoven fabrics produced at high speed, fibers with a denier of at most 1 denier are the limit. Therefore, the surface sheet made of fibers containing fibers of 1 denier or less has not been put to practical use, and is not satisfactory in terms of feel and the like.
前記分割型複合繊維は、分割により１デニール
以下の繊維を得ることができ、したがつてまた、
該繊維を用いることにより前記問題点を解決する
ことができる。しかし、前記分割型複合繊維をカ
ード機だけで処理し分割して目的とする細デニー
ルのものを得るには問題がある。すなわち、前記
分割型複合繊維のカード機での分割性を良くすれ
ば、カード途中で分割され細デニール化した繊維
が細デニール繊維の挙動を示し、カード通過性が
悪くなる。逆に、カード通過性を良くすれば、繊
維の分割性が悪くなり、前記分割型複合繊維を用
いる特長を生かすことができないといつた問題が
ある。したがつて、本発明方法は、分割型複合繊
維を所定長さにカツトしたいわゆるステープルフ
アイバーを用いてウエブを形成するが、該ウエブ
の形成にカード機を用いる場合でも、ステープル
フアイバーが細デニールに可及的分割されないよ
うに開繊してウエブを形成することができ、そし
て、該ウエブに高速柱状水流を噴射して未分割の
ステープルフアイバーを細デニールに分割し、同
時にステープルフアイバーを交絡させてシート状
形態を賦与することができる前記表面シートを得
ることにある。 The splittable composite fiber can be split into fibers of 1 denier or less, and therefore,
By using this fiber, the above problems can be solved. However, there are problems in processing and dividing the splittable composite fibers using only a carding machine to obtain the desired fine denier fibers. That is, if the splittability of the splittable conjugate fibers in a carding machine is improved, the fibers split in the middle of the card and made into fine denier fibers exhibit the behavior of fine denier fibers, and the card passing property becomes poor. On the other hand, if the card passing property is improved, the splitting property of the fiber becomes worse, and there is a problem in that the advantages of using the splittable conjugate fiber cannot be utilized. Therefore, in the method of the present invention, a web is formed using so-called staple fibers, which are splittable conjugate fibers cut to a predetermined length. A web can be formed by opening the fibers so that they are not split as much as possible, and a high-speed columnar water stream is injected onto the web to split the unsplit staple fibers into fine denier pieces, and at the same time entangle the staple fibers. The object of the present invention is to obtain the above-mentioned top sheet which can be given a sheet-like form.
（問題点を解決するための手段・実施態様）
前記問題点を解決するための本発明手段の要旨
とするところは、互いに接着性の乏しい二種の熱
可塑性重合体成分から構成され、一方の前記成分
が他方の前記成分により繊維方向に連続する複数
の層に分離している分割型複合繊維であるステー
プルフアイバーを開繊して形成したウエブであつ
て、前記ウエブ中に未分割の前記ステープルフア
イバーが少なくとも一部混在する前記ウエブを支
持体上で背圧30〜100Kg／cm2の高速柱状水流を噴
射処理することにより、未分割の前記ステープル
フアイバーを分割し、同時に前記ステープルフア
イバーを交絡させてシート状形態を賦与すること
を特徴とする衛生物品の表面シートの製造方法に
存する。(Means/Embodiments for Solving the Problems) The gist of the means of the present invention for solving the above-mentioned problems is that one of the thermoplastic polymer components is composed of two thermoplastic polymer components having poor adhesiveness to each other; A web formed by opening staple fibers, which are splittable conjugate fibers in which the component is separated into a plurality of layers continuous in the fiber direction by the other component, and the undivided staple fiber is in the web. The web in which at least a portion of the fibers are mixed is treated by spraying a high-speed columnar water stream with a back pressure of 30 to 100 kg/cm 2 on a support to separate the undivided staple fibers and at the same time entangle the staple fibers. The present invention relates to a method for manufacturing a top sheet of a sanitary article, characterized in that the top sheet of a sanitary article is provided with a sheet-like shape.
さらに、本発明方法を実施態様に基づいて説明
すると、以下のとおりである。 Furthermore, the method of the present invention will be explained based on embodiments as follows.
本発明方法の実施に際しては、分割型複合繊維
を所定長さ、例えば、15〜80mmにカツトしたいわ
ゆるステープルフアイバーを用いる。ここに分割
型複合繊維とは、互いに接着性の乏しい二種の熱
可塑性重合体成分、例えば、ポリエステル−ポリ
プロピレン、ポリエステル−ナイロンなどのよう
に複合紡糸延伸したとき、さらには、叩打、緊
張、圧縮または加熱収縮などの物理的力により比
較的容易に分割し得るものをいう。分割型複合繊
維の単繊維１の横断面は、例えば、第１図Ａ，Ｂ
に示すように熱可塑性重合体成分１ａ，１ｂから
なるが、その図示例に限定されない。このような
分割型複合繊維は、例えば、特公昭39−29636号、
特開昭50−5650号の各公報に開示されている製造
方法で得ることができ、これによれば、分割によ
り細デニールのフイブリル状繊維が容易に形成さ
れることが示唆されている。分割前の単繊維１の
デニール範囲は、１〜５デニール、分割フイブリ
ル化により形成されるフイブリル状繊維のデニー
ルは0.7デニール以下であり、これが本数比率で
50％以上であることが好ましい。分割前のデニー
ルが１デニール以下であると、ウエブの形成にカ
ード機を用いる場合、カード通過性に難があり、
５デニール以上であると、高圧水噴射の繊維配列
に乱れが生じ、地合いの整つた均質な不織布を得
ることができない。そして、このような分割型複
合繊維は、一部が分割フイブリル化されたステー
プルフアイバーと、未分割のステープルフアイバ
ーとが混在しているもので、本発明方法により処
理するため、目付７〜100ｇ／m2のウエブに形成
される。ウエブの形成としてはカードウエブに限
定されず、ランダムウエブ、吹き込み開繊法など
のいずれであつてもよいが、好ましくはカードウ
エブである。 When carrying out the method of the present invention, so-called staple fibers, which are splittable conjugate fibers cut to a predetermined length, for example, 15 to 80 mm, are used. Splitable conjugate fibers herein refer to two types of thermoplastic polymer components that have poor adhesion to each other, such as polyester-polypropylene, polyester-nylon, etc., when composite fibers are spun and drawn, and furthermore, they are made of two thermoplastic polymer components that have poor adhesion to each other, such as polyester-polypropylene, polyester-nylon, etc. Or, it refers to something that can be relatively easily divided by physical force such as heat shrinkage. The cross section of the single fiber 1 of the splittable composite fiber is, for example, as shown in FIGS. 1A and B.
As shown in the figure, it consists of thermoplastic polymer components 1a and 1b, but is not limited to the illustrated example. Such splittable composite fibers are disclosed in, for example, Japanese Patent Publication No. 39-29636,
It can be obtained by the manufacturing method disclosed in JP-A-50-5650, and it is suggested that fine denier fibrillar fibers can be easily formed by splitting. The denier range of single fiber 1 before splitting is 1 to 5 denier, and the denier of fibrillar fibers formed by split fibrillation is 0.7 denier or less, which is the number ratio.
It is preferably 50% or more. If the denier before division is less than 1 denier, when using a card machine to form the web, there will be difficulty in passing the card.
If it is 5 denier or more, the fiber arrangement of the high-pressure water jet will be disturbed, making it impossible to obtain a uniform nonwoven fabric with a uniform texture. Such splittable composite fibers are a mixture of partially split fibrillated staple fibers and unsplit staple fibers, and because they are processed by the method of the present invention, they have a basis weight of 7 to 100 g/ Formed into a web of m2 . The formation of the web is not limited to a carded web, and may be formed by any method such as a random web or a blow-spreading method, but preferably a carded web.
このようなステープルフアイバーからなるウエ
ブ２を得た後、第２図、第３図に示すように、支
持体３上に導き、ノズル手段４に設けられた多数
の微小オリフイスから高速水流５をウエブ２に対
して噴射する。このときの噴射背圧は20Kg／cm2以
上であれば、未分割のステープルフアイバーを分
割することができるだけのエネルギーに達する
が、その分割と同時にステープルフアイバーに交
絡を促進させて所要強度の不織布を得るためには
30Kg／cm2以上であることが必要である。さらに、
その分割と交絡は噴射背圧が100Kg／cm2までであ
れば充分であり、それ以上の圧力は効率的ではな
い。また、高速水流は、スプレー状である場合に
は、その衡繋エネルギーが著しく低下するので、
注状であることが好ましい。支持体３としては、
高速水流５が支持体３上に衝突して反発流を発生
させ、その反発流もステープルフアイバーの交絡
に作用するような充分な表面硬度を有するロー
ル、すなわち、JIS−K6301Hsによる50゜以上、好
ましくは、70゜以上のロールである。この支持ロ
ール３は、有孔・無孔の如何を問わないが、有孔
の場合には、前述のように反発流を発生させるこ
とができる無孔平坦部分を有孔部分間に有してい
ることが必要である。また、必要に応じて、この
支持ロール３の複数個またはこれと他の適当な支
持体との組み合せで所定間隔で配置して高速柱状
水による多段処理をなすようにしてもよい。 After obtaining a web 2 made of such staple fibers, as shown in FIGS. 2 and 3, the web is guided onto a support 3, and a high-speed water stream 5 is applied to the web from a number of minute orifices provided in a nozzle means 4. Inject against 2. If the injection back pressure at this time is 20 kg/cm 2 or more, it will reach enough energy to split the undivided staple fibers, but at the same time, it will promote intertwining of the staple fibers and create a nonwoven fabric with the required strength. in order to get
It is necessary to be 30Kg/cm 2 or more. moreover,
The division and entanglement are sufficient if the injection back pressure is up to 100 Kg/cm 2 , and higher pressures are not efficient. In addition, when high-speed water flow is in the form of a spray, its equilibrium energy decreases significantly, so
Preferably, it is a note. As the support 3,
The high-speed water stream 5 collides with the support 3 to generate a repulsion flow, and the repulsion flow also acts on entangling the staple fibers.The roll has sufficient surface hardness, i.e., 50° or more according to JIS-K6301Hs, preferably. is a roll of 70° or more. This support roll 3 may be perforated or non-perforated, but if it is perforated, it has a non-perforated flat part between the perforated parts that can generate a counterflow as described above. It is necessary to be present. Further, if necessary, a plurality of support rolls 3 or a combination of these and other suitable supports may be arranged at predetermined intervals to perform multi-stage treatment using high-speed columnar water.
このように本発明方法によれば、支持体３上の
ウエブ２に対して高速注状水流５を噴射すること
により、ウエブ２中の未分割のステープルフアイ
バーを細デニールに分割し、それと同時にステー
プルフアイバーを交絡させてシート状形態を賦与
して不織布を得ることができる。 As described above, according to the method of the present invention, by injecting the high-speed injection water stream 5 to the web 2 on the support 3, the undivided staple fibers in the web 2 are divided into fine denier pieces, and at the same time, the staple fibers are Nonwoven fabrics can be obtained by intertwining the fibers to give them a sheet-like form.
（発明の効果）
本発明方法によれば、上述のように、分割型複
合繊維であるステープルフアイバーを、高速水流
で噴射することにより分割すると同時に交絡させ
ることができ、またそのためウエブは、そのステ
ープルフアイバーが殆んど分割されていないも
の、すなわち、太デニールのまゝのものを用いて
高速でウエブを形成することができる。したがつ
て、フアインデニールのステープルフアイバーか
らなる不織布である衛生物品の表面シートの生産
性を著しく向上させ、それを使い捨て用として適
する低コストで供給することができる。(Effects of the Invention) According to the method of the present invention, as described above, staple fibers, which are splittable conjugate fibers, can be split and entangled at the same time by jetting with a high-speed water jet, and therefore the web can A web can be formed at high speed by using fibers in which the fibers are hardly divided, that is, the fibers have a large denier. Therefore, the productivity of the top sheet for sanitary articles, which is a nonwoven fabric made of fine denier staple fibers, can be significantly improved, and it can be supplied at a low cost and suitable for disposable use.
図面は本発明方法の実施に供する繊維および装
置の一部を示すもので、第１図Ａ，Ｂは分割型複
合繊維の横断面図、第２図はウエブを高速柱状水
流により処理する状態の斜視図、第３図は同上処
理の側面図である。
１……分離型複合繊維の単繊維、１ａ，１ｂ…
…熱可塑性重合体成分、２……ウエブ、３……支
持体、４……ノズル手段、５……高速柱状水流。
The drawings show part of the fibers and equipment used to carry out the method of the present invention. Figures 1A and B are cross-sectional views of splittable composite fibers, and Figure 2 shows a state in which the web is treated with a high-speed columnar water stream. The perspective view and FIG. 3 are side views of the same process. 1... Single fibers of separable composite fibers, 1a, 1b...
... thermoplastic polymer component, 2 ... web, 3 ... support, 4 ... nozzle means, 5 ... high-speed columnar water stream.
Claims (1)
成分から構成され、一方の前記成分が他方の前記
成分により繊維方向に連続する複数の層に分離し
ている分割型複合繊維であるステープルフアイバ
ーを開繊して形成したウエブであつて、前記ウエ
ブ中に未分割の前記ステープルフアイバーが少な
くとも一部混在する前記ウエブを支持体上におい
て背圧30〜100Kg／cm2の高速柱状水流で噴射処理
することにより、未分割の前記ステープルフアイ
バーを分割し、同時に前記ステープルフアイバを
交絡させてシート状形態を賦与することを特徴と
する衛生物品の表面シートの製造方法。 ２ 前記分割型複合繊維は、単繊維である未分割
のステープルフアイバーが１〜５デニールである
特許請求の範囲第１項記載の製造方法。 ３ 前記分割払分割型複合繊維は、分割フイブリ
ル化したステープルフアイバーが混在し、該ステ
ープルフアイバーは0.7デニール以下であつて本
数比率で50％以上である特許請求の範囲第１項記
載の製造方法。 ４ 前記支持体は表面硬度がJIS−K6301Hsによ
る50゜以上のロールからなる特許請求の範囲第１
項記載の製造方法。[Scope of Claims] 1. A split type composite composed of two thermoplastic polymer components having poor adhesiveness to each other, in which one of the components is separated by the other component into a plurality of layers that are continuous in the fiber direction. A web formed by opening staple fibers, in which at least a portion of the undivided staple fibers are mixed in the web, is placed on a support at high speed under a back pressure of 30 to 100 Kg/ cm2. A method for producing a top sheet for a sanitary article, characterized in that the undivided staple fibers are divided by spraying with a columnar water stream, and at the same time the staple fibers are intertwined to give a sheet-like shape. 2. The manufacturing method according to claim 1, wherein the splittable conjugate fiber has unsplit staple fibers having a denier of 1 to 5 denier. 3. The manufacturing method according to claim 1, wherein the installment split composite fiber contains split fibrillated staple fibers, and the staple fibers have a denier of 0.7 or less and a number ratio of 50% or more. 4. Claim 1, wherein the support is a roll having a surface hardness of 50° or more according to JIS-K6301Hs.
Manufacturing method described in section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60269058A JPS62129054A (en) | 1985-11-29 | 1985-11-29 | Production of surface sheet of sanitary article |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60269058A JPS62129054A (en) | 1985-11-29 | 1985-11-29 | Production of surface sheet of sanitary article |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62129054A JPS62129054A (en) | 1987-06-11 |
| JPH0522544B2 true JPH0522544B2 (en) | 1993-03-29 |
Family
ID=17467072
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60269058A Granted JPS62129054A (en) | 1985-11-29 | 1985-11-29 | Production of surface sheet of sanitary article |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62129054A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9504610B2 (en) | 2013-03-15 | 2016-11-29 | The Procter & Gamble Company | Methods for forming absorbent articles with nonwoven substrates |
| US9205006B2 (en) | 2013-03-15 | 2015-12-08 | The Procter & Gamble Company | Absorbent articles with nonwoven substrates having fibrils |
| RU2677084C2 (en) | 2014-09-10 | 2019-01-15 | Дзе Проктер Энд Гэмбл Компани | Nonwoven web |
| RU2018129448A (en) | 2016-03-09 | 2020-02-13 | Дзе Проктер Энд Гэмбл Компани | ABSORBABLE PRODUCT WITH ACTIVATED MATERIAL |
| WO2018165511A1 (en) | 2017-03-09 | 2018-09-13 | The Procter & Gamble Company | Thermoplastic polymeric materials with heat activatable compositions |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5626050A (en) * | 1979-08-07 | 1981-03-13 | Kuraray Chikopii Kk | Facing of absorbable article comprising nonwoven fabric |
| JPS5915549A (en) * | 1982-07-19 | 1984-01-26 | 東レ株式会社 | Production of fiber interlace sheet |
| JPS59100750A (en) * | 1982-11-30 | 1984-06-11 | 三菱レイヨン株式会社 | Fibrous sheet article |
-
1985
- 1985-11-29 JP JP60269058A patent/JPS62129054A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5626050A (en) * | 1979-08-07 | 1981-03-13 | Kuraray Chikopii Kk | Facing of absorbable article comprising nonwoven fabric |
| JPS5915549A (en) * | 1982-07-19 | 1984-01-26 | 東レ株式会社 | Production of fiber interlace sheet |
| JPS59100750A (en) * | 1982-11-30 | 1984-06-11 | 三菱レイヨン株式会社 | Fibrous sheet article |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62129054A (en) | 1987-06-11 |
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