JPH09234221A - Permeable surface sheet production method of body fluid absorbing object - Google Patents
Permeable surface sheet production method of body fluid absorbing objectInfo
- Publication number
- JPH09234221A JPH09234221A JP8043224A JP4322496A JPH09234221A JP H09234221 A JPH09234221 A JP H09234221A JP 8043224 A JP8043224 A JP 8043224A JP 4322496 A JP4322496 A JP 4322496A JP H09234221 A JPH09234221 A JP H09234221A
- Authority
- JP
- Japan
- Prior art keywords
- filament
- sheet
- embossing
- filaments
- cone
- 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
Links
Landscapes
- Orthopedics, Nursing, And Contraception (AREA)
- Manufacturing Of Multi-Layer Textile Fabrics (AREA)
- Nonwoven Fabrics (AREA)
- Treatment Of Fiber Materials (AREA)
- Absorbent Articles And Supports Therefor (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、生理用ナプキン
や使い捨ておむつ等の体液吸収性物品に使用する透液性
表面シートの製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a liquid-permeable topsheet used for body fluid-absorbing articles such as sanitary napkins and disposable diapers.
【０００２】[0002]
【従来の技術】特開昭５７−８２５０５号公報には、熱
可塑性合成樹脂を使用した疎水性ネット状シートを親水
性シートに重ねて熱エンボス処理を施し、両シートを一
体化して使い捨ておむつの表面シートに使用する技術が
開示されている。2. Description of the Related Art JP-A-57-82505 discloses a disposable diaper in which a hydrophobic net-like sheet made of a thermoplastic synthetic resin is superposed on a hydrophilic sheet and subjected to heat embossing, and the both sheets are integrated. Techniques for use in topsheets are disclosed.
【０００３】また、特開平７−３２８０６１号公報に
は、透液性不織布の上面に複数条の熱可塑性合成樹脂フ
ィルム帯片が互いに平行に接合している表面シートが開
示されている。これらの不織布と帯片とは、加熱加圧下
で互いに溶着して一体となり、帯片間にのぞく不織布部
分が透液性を有する。Further, Japanese Patent Application Laid-Open No. 7-328061 discloses a surface sheet in which a plurality of strips of thermoplastic synthetic resin film are joined in parallel to each other on the upper surface of a liquid-permeable nonwoven fabric. These non-woven fabrics and strips are welded together under heat and pressure to become one piece, and the non-woven fabric portion between the strips has liquid permeability.
【０００４】これら公知の表面シートは、熱可塑性合成
樹脂のネット状シートやフィルム状帯片が、表面シート
の強度を向上させたり、表面シートにおける体液の流れ
の方向を規制したり、コアに吸収された経血等に対する
隠蔽効果を発揮したりする。In these known topsheets, a net sheet or a film strip of a thermoplastic synthetic resin improves the strength of the topsheet, regulates the direction of body fluid flow in the topsheet, or is absorbed by the core. It also exerts a concealing effect on the treated menstrual blood and the like.
【０００５】[0005]
【発明が解決しようとする課題】前記公知技術におい
て、熱可塑性合成樹脂のネット状シートやフィルムを不
織布に溶着して得られる表面シートは、溶着した部位の
剛性が非溶着部位の剛性よりも高くなり、それによって
シート全体の柔軟性を損なうことがある。そのような表
面シートは、物品着用者の肌に密着しにくく、該物品の
着用感や防漏性向上の妨げとなる。In the above-mentioned known technique, a surface sheet obtained by welding a net-like sheet or film of thermoplastic synthetic resin to a non-woven fabric has a rigidity of a welded portion higher than that of a non-welded portion. This may impair the flexibility of the entire sheet. Such a surface sheet is unlikely to adhere to the skin of the wearer of the article, which hinders the wearing feeling of the article and the improvement of leakproofness.
【０００６】そこで、この発明は、不織布の上面にフィ
ラメントを連続的に接合して透液性表面シートを製造す
る方法において、その接合によって該表面シートの柔軟
性を損うことがないような、また、たとい損うことがあ
ってもその程度が軽微となるような方法の提供を課題に
している。Therefore, the present invention is a method for producing a liquid-permeable surface sheet by continuously bonding filaments to the upper surface of a nonwoven fabric, so that the bonding does not impair the flexibility of the surface sheet. Further, it is an object to provide a method of reducing the degree of damage even if it is damaged.
【０００７】[0007]
【課題を解決するための手段】前記課題を解決するため
に、この発明においては、熱可塑性合成繊維からなる透
液性不織布の上面に、互いに平行に延びる複数条の熱可
塑性合成樹脂フィラメントが連続的に接合した体液吸収
性物品用表面シートの製造方法を前提にしている。In order to solve the above problems, in the present invention, a plurality of thermoplastic synthetic resin filaments extending parallel to each other are continuously formed on the upper surface of a liquid-permeable nonwoven fabric made of thermoplastic synthetic fibers. It is premised on a method for producing a surface sheet for a body fluid absorbent article that is physically bonded.
【０００８】かかる前提において、この発明が特徴とす
るところは、前記不織布とフィラメントとが、該フィラ
メントが熱軟化状態にあるときに、互いに噛み合うこと
が可能な一対のエンボス手段間に供給されて賦型され、
前記エンボス手段の一方が前記不織布の上面に向かって
垂下し、前記フィラメントが延びる方向と、該方向に直
交する方向とに複数条をなして配列された錐体を有し、
前記エンボス手段のもう一方が前記フィラメントが延び
る方向に直交して延在し、その延びる方向に交互に反復
される断面Ｖ字型の谷部と逆Ｖ字型の山部とを有し、該
谷部は、前記フィラメントに直交して配列された一条の
前記錐体群が嵌入可能に形成され、該山部は、前記一条
の錐体群と、これと隣り合う一条の錐体群との間に嵌入
可能に形成されていること、にある。On this premise, the present invention is characterized in that the non-woven fabric and the filament are supplied between a pair of embossing means capable of meshing with each other when the filament is in a heat softened state. Typed,
One of the embossing means hangs down toward the upper surface of the nonwoven fabric, and has a cone in which a plurality of threads are arranged in a direction in which the filament extends and in a direction orthogonal to the direction,
The other of the embossing means extends orthogonally to a direction in which the filament extends, and has valley portions having a V-shaped cross section and peak portions having an inverted V-shaped shape which are alternately repeated in the extending direction, The valley portion is formed so that a single row of the pyramid group arranged orthogonal to the filament can be fitted therein, and the peak portion of the single row of pyramid group and the adjacent single row of pyramid group. It is formed so that it can be inserted between them.
【０００９】[0009]
【実施例】体液吸収性物品として生理用ナプキンを例に
とり、添付の図面を参照して、この発明にかかる透液性
表面シートの製造方法の詳細を説明すると、以下のとお
りである。EXAMPLES A sanitary napkin will be taken as an example of a body fluid absorbent article, and the details of the method for producing a liquid-permeable surface sheet according to the present invention will be described with reference to the accompanying drawings.
【００１０】図１に部分破断斜視図で示された生理用ナ
プキン１は、透液性表面シート２と、不透液性裏面シー
ト３と、これら両シート２，３間に介在する吸液性コア
４とからなり、表裏両シート２，３は、コア４の周縁か
ら延出する部分で互いに接合している。表面シート２
は、不織布６と、その上面にあってナプキン１の長手方
向に互いに平行に延びる複数条のフィラメント７とによ
って構成されている。A sanitary napkin 1 shown in a partially cutaway perspective view in FIG. 1 has a liquid-permeable top sheet 2, a liquid-impermeable back sheet 3, and a liquid-absorbent property interposed between these two sheets 2 and 3. The front and back sheets 2 and 3 are made of a core 4 and are joined to each other at a portion extending from the peripheral edge of the core 4. Surface sheet 2
Is composed of a nonwoven fabric 6 and a plurality of filaments 7 on the upper surface thereof and extending in parallel to each other in the longitudinal direction of the napkin 1.
【００１１】図２、３、４は、図１の部分拡大図と、図
２のIII −III 線およびIV−IV線端面図である。不織布
６は、親水化処理された熱可塑性合成繊維が互いに交絡
することにより形成され、複数条の熱可塑性合成樹脂フ
ィラメント７は、その下面部分８が不織布６の上面９に
連続的に接合している。隣り合うフィラメント７どうし
は所要の間隔を有する。2, 3 and 4 are a partially enlarged view of FIG. 1 and end views of the lines III-III and IV-IV of FIG. The non-woven fabric 6 is formed by entanglement of the thermoplastic synthetic fibers that have been hydrophilized, and the plurality of strips of the thermoplastic synthetic resin filament 7 are such that the lower surface portion 8 thereof is continuously bonded to the upper surface 9 of the non-woven fabric 6. There is. Adjacent filaments 7 have a required space.
【００１２】図３、４に示されるように、不織布６の上
面９とフィラメント７とは、フィラメント７の長手方向
に所要の周期で交互に反復する山部１１と谷部１２とを
有し、これらの山部１１と谷部１２とがフィラメント７
と直交する方向に、図１でいえばナプキン１の幅方向
に、延びている。図４から明らかなように、隣り合うフ
ィラメント７どうしの間において、不織布６の上面９
は、フィラメント７の頂部１０とほぼ同じレベルか、頂
部１０よりも高いレベルにある。不織布６の繊維密度
は、図３、４に示されるように山部１１から谷部１２に
向かって次第に高くなる場合の他に、ほぼ一様な場合が
ある。また、図２，３に示されるように、谷部１２の底
では、局部的に繊維間隔が相対的に大きくなり、不織布
６の上下面間に延びる開孔１５が形成されている場合が
ある。さらにはまた、この開孔１５の周縁部で繊維密度
が相対的に高くなっている場合がある。この後者の態様
は、図３で谷部１２Ａとして例示されている。図３，４
で明らかなように、不織布６において、山部１１の下面
側には凹部３１が形成され、谷部１２の下面側には凸部
３２が形成されている。As shown in FIGS. 3 and 4, the upper surface 9 of the nonwoven fabric 6 and the filament 7 have peaks 11 and valleys 12 which are alternately repeated in the longitudinal direction of the filament 7 at a required cycle. These peaks 11 and valleys 12 are filaments 7.
1 extends in the width direction of the napkin 1 in FIG. As is clear from FIG. 4, the upper surface 9 of the nonwoven fabric 6 is located between the adjacent filaments 7.
Is at about the same level as the top 10 of the filament 7 or at a higher level than the top 10. The fiber density of the non-woven fabric 6 may be almost uniform in addition to the case where it gradually increases from the peaks 11 to the valleys 12 as shown in FIGS. In addition, as shown in FIGS. 2 and 3, there may be a case where the fiber interval is locally relatively large at the bottom of the valley 12 and an opening 15 extending between the upper and lower surfaces of the nonwoven fabric 6 is formed. . Furthermore, the fiber density may be relatively high in the peripheral portion of the opening 15. This latter aspect is illustrated as valley 12A in FIG. Figures 3 and 4
As is clear from the above, in the non-woven fabric 6, the concave portion 31 is formed on the lower surface side of the crest portion 11, and the convex portion 32 is formed on the lower surface side of the valley portion 12.
【００１３】図５に示された図２のＶ−Ｖ線端面図から
明らかなように、谷部１２は、その長手方向（図２の左
右方向）で交互に反復する第２の山部１７と第２の谷部
１８とを有する。ただし、この第２の山部１７の高さ
は、山部１１の高さを越えることがない。第２の谷部１
８は、第２の山部１７よりも繊維密度が高くなることが
あり、また、図２，３に示されるように開孔１５を有す
る場合がある。As is apparent from the end view taken along the line V-V in FIG. 2 shown in FIG. 5, the valleys 12 have second peaks 17 which are alternately repeated in the longitudinal direction (the left-right direction in FIG. 2). And a second valley portion 18. However, the height of the second mountain portion 17 does not exceed the height of the mountain portion 11. Second valley 1
8 may have a higher fiber density than the second mountain portion 17, and may have an opening 15 as shown in FIGS.
【００１４】このような構成の表面シート２を使用した
生理用ナプキン１では、表面シート２が、山部１１と谷
部１２とからなる蛇腹構造を有するから、長手方向の湾
曲が容易であって着用者の身体によくフィットする。排
泄された経血の多くは、繊維密度の低い所から高い所へ
と、すなわち、山部１１から谷部１２へ向かって拡散
し、谷部１２の底部からコア４に移行する。表面シート
２は、主として山部１１が肌に接触し、谷部１２は肌か
ら離間する傾向にあるから、谷部１２に拡散した経血は
肌から遠ざかり、ナプキン１を着用することによる湿潤
感を軽減することに寄与する。谷部１２の底に大きな開
孔１５があれば、谷部１２の経血はより迅速にコア４へ
移行することが可能になる。特に表面シート２が図６の
態様であると、開孔１５の周縁部がコア４によく密着
し、経血の移行が促進される。不織布６の上面９がフィ
ラメント７の頂部１０と同じか、それよりも高いレベル
にあると、フィラメント７が着用者の肌に触れて合成樹
脂に特有の感触を与えることが少なくなり、表面シート
２は布のような肌触りのものとなる。また、図６のよう
に表面シート２が上下面に起伏を有していると、肌に当
接したときのクッション性がよい。In the sanitary napkin 1 using the topsheet 2 having such a structure, the topsheet 2 has a bellows structure composed of the ridges 11 and the valleys 12, so that it can be easily bent in the longitudinal direction. Fits well on the wearer's body. Most of the excreted menstrual blood is diffused from a place having a low fiber density to a place having a high fiber density, that is, from the mountain portion 11 to the valley portion 12, and is transferred from the bottom portion of the valley portion 12 to the core 4. In the topsheet 2, the peaks 11 tend to come into contact with the skin and the valleys 12 tend to separate from the skin. Contribute to reducing. The large opening 15 at the bottom of the valley 12 allows menstrual blood in the valley 12 to move to the core 4 more quickly. In particular, when the surface sheet 2 has the configuration shown in FIG. 6, the peripheral edge of the opening 15 is in close contact with the core 4 and the transfer of menstrual blood is promoted. When the upper surface 9 of the non-woven fabric 6 is at the same level as or higher than the top portion 10 of the filament 7, the filament 7 is less likely to come into contact with the skin of the wearer and give a unique feeling to the synthetic resin, and the surface sheet 2 Has a cloth-like feel. Further, when the topsheet 2 has undulations as shown in FIG. 6, the cushioning property when contacting the skin is good.
【００１５】かかる表面シート２を製造する工程の概略
は、次のとおりである。まず、不織布６となるべき連続
した不織布ウエブを一方向に所要速度で供給する。一
方、押出機を使用してフィラメント７となるべき複数条
のフィラメントを押し出し、ウエブの上面にその供給方
向に沿って平行に並ぶように載置する。フィラメントが
軟化状態にある間に、ウエブとフィラメントとにエンボ
ス加工を施して、両者を一体的に接合するとともに、表
面シート２の山部１１と谷部１２となるべき山部と谷部
とを賦型し、複合シートを得る。この複合シートは、所
要の寸法に裁断し、表面シート２として使用する。The outline of the process for producing the topsheet 2 is as follows. First, a continuous non-woven web to be the non-woven fabric 6 is fed in one direction at a required speed. On the other hand, a plurality of filaments to be the filaments 7 are extruded using an extruder and placed on the upper surface of the web so as to be arranged in parallel along the supply direction. While the filament is in the softened state, the web and the filament are embossed to bond them together, and the peaks and troughs of the surface sheet 2 to be the peaks 11 and the troughs 12 are formed. Molding is performed to obtain a composite sheet. This composite sheet is cut into a desired size and used as the surface sheet 2.
【００１６】この工程において、不織布ウエブの一例に
は、織度４ｄ、カット長５１ｍｍのポリエチレンとポリ
プロピレンとの芯鞘複合繊維（チッソ株式会社製ＥＳ繊
維ＥＡＣ−７０４Ｖ０６）からなり、秤量２０ｇ／ｍ2
と見かけ厚み０．２ｍｍを有し、繊維表面が所要の程度
に親水化処理されたサーマルボンド不織布がある。フィ
ラメントの一例には、密度０．９０５、メルトフローレ
ート２０を有する低密度ポリエチレン（住友化学株式会
社製 エクセレンＶＬ８００）が９５〜６０重量％を占
め、フィラメントの形成を容易にするための加工助剤
や、撥血剤としてのマイクロクリスタリンワックス、着
色剤としてのＴｉＯ2等が５〜４０重量％を占める混合
物を押し出し成形して得られる幅０．１〜１．０ｍｍ、
厚み０．０１〜０．０７ｍｍのフィラメントがある。こ
のフィラメントは、０．３〜２ｍｍの平行間隔をあけて
不織布ウエブ上に配列してあることが好ましい。In this step, an example of a nonwoven web is composed of core-sheath composite fibers of polyethylene and polypropylene (ES fiber EAC-704V06 manufactured by Chisso Corporation) having a weave of 4d and a cut length of 51 mm, and weighs 20 g / m 2.
There is a thermal bond non-woven fabric having an apparent thickness of 0.2 mm and having a fiber surface hydrophilically treated to a required degree. As an example of the filament, low-density polyethylene having a density of 0.905 and a melt flow rate of 20 (Excellen VL800 manufactured by Sumitomo Chemical Co., Ltd.) accounts for 95 to 60% by weight, and a processing aid for facilitating the formation of the filament. Alternatively, a width of 0.1 to 1.0 mm obtained by extruding a mixture in which microcrystalline wax as a blood repellent, TiO 2 as a colorant, etc. occupying 5 to 40 wt% is extruded,
There is a filament with a thickness of 0.01 to 0.07 mm. The filaments are preferably arranged on the non-woven web at parallel intervals of 0.3 to 2 mm.
【００１７】図６、７は、複合シートの山部と谷部とを
賦型するために使用するエンボスロール１２０の模式的
な部分斜視図と、部分側面図であり、前記複合シートが
参照符号１１５として仮想線で示されている。エンボス
ロール１２０は、上部ロール１２０Ａと下部ロール１２
０Ｂとからなり、上部ロール１２０Ａでは、四角錐１２
３がロールの軸方向Ａ−Ａと周方向Ｂ−Ｂとに複数条を
なして並んでいる。下部ロール１２０Ｂでは、ロールの
軸方向Ｃ−Ｃに延びる逆Ｖ字型の山部１２１とＶ字型の
谷部１２２とがロール１２０Ｂの周方向Ｄ−Ｄに交互に
並んでいる。上下部ロール１２０Ａ，１２０Ｂは、それ
ぞれ時計方向と反時計方向とに回動して噛み合うもの
で、上部ロール１２０Ａの軸方向Ａ−Ａに並ぶ一条の四
角錐１２３群が図の垂直方向下方に来ると、下部ロール
１２０Ｂの谷部１２２に嵌入可能であり、周方向Ｂ−Ｂ
で隣り合って並ぶ二条の四角錐１２３群の間には、下部
ロール１２０Ｂの山部１２１が嵌入可能である（図７参
照）。6 and 7 are a schematic partial perspective view and a partial side view of the embossing roll 120 used for shaping the peaks and valleys of the composite sheet, and the composite sheet is a reference numeral. It is shown in phantom as 115. The embossing roll 120 includes an upper roll 120A and a lower roll 12
0B, the upper roll 120A has a quadrangular pyramid 12
3 are arranged in the axial direction AA of the roll and the circumferential direction BB in a plurality of lines. In the lower roll 120B, inverted V-shaped peaks 121 and V-shaped troughs 122 extending in the axial direction CC of the roll are alternately arranged in the circumferential direction DD of the roll 120B. The upper and lower rolls 120A and 120B rotate and engage with each other in a clockwise direction and a counterclockwise direction, respectively, and a group of quadrangular pyramids 123 aligned in the axial direction AA of the upper roll 120A comes to the lower side in the vertical direction in the drawing. And can be fitted into the valley portion 122 of the lower roll 120B, and the circumferential direction BB
The mountain portion 121 of the lower roll 120B can be fitted between the two groups of the quadrangular pyramids 123 arranged adjacent to each other (see FIG. 7).
【００１８】図７、８、９には、上下部ロール１２０
Ａ，１２０Ｂが噛み合うときの各種態様が示されてい
る。図７では、上部ロール１２０Ａの四角錐１２３の断
面形状と、下部ロール１２０Ｂの山部１１１および谷部
１１２の断面形状とがほぼ同じであって、噛み合った上
下部ロール１２０Ａ，１２０Ｂの間隙がほぼ一様であ
る。図８では、上下部ロール１２０Ａ，１２０Ｂの間隙
が四角錐１２３の頂部と谷部１１２の底部との間で最も
狭く、四角錐１２３の基底部と山部１１１の頂部との間
で最も広くなっている。図９では、その間隙が四角錐１
２３の基底部と山部１１１の頂部との間で最も狭く、四
角錐１２３の頂部と谷部１１２の底部との間で最も広く
なっている。これらの図示例において、上部ロール１２
０Ａの四角錐１２３は、その頂点を通る周方向断面の開
角Ｐ（図７参照）が３０〜７０°、高さＨが１〜５ｍｍ
であることが好ましく、下部ロール１２０Ｂの山部１１
１と谷部１１２とは、図７、８、９のいずれかを実現す
ることができるようにその寸法を定めることができる。
四角錐１２３の軸方向断面における開角は、開角Ｐと同
じである場合と異なる場合とがある。The upper and lower rolls 120 are shown in FIGS.
Various modes when A and 120B mesh are shown. In FIG. 7, the cross-sectional shape of the quadrangular pyramid 123 of the upper roll 120A and the cross-sectional shape of the crests 111 and the troughs 112 of the lower roll 120B are almost the same, and the gap between the upper and lower rolls 120A and 120B in mesh is almost the same. It is uniform. In FIG. 8, the gap between the upper and lower rolls 120A and 120B is the narrowest between the top of the quadrangular pyramid 123 and the bottom of the valley 112, and the widest between the base of the quadrangular pyramid 123 and the top of the ridge 111. ing. In FIG. 9, the gap is a square pyramid 1.
It is narrowest between the base of 23 and the top of the peak 111, and widest between the top of the quadrangular pyramid 123 and the bottom of the valley 112. In these illustrated examples, the upper roll 12
The quadrangular pyramid 123 of 0A has an opening angle P (see FIG. 7) of 30 to 70 ° and a height H of 1 to 5 mm in a circumferential direction passing through the apex thereof.
Is preferable, and the mountain portion 11 of the lower roll 120B is
1 and trough 112 can be dimensioned so that any of FIGS. 7, 8 and 9 can be realized.
The open angle in the axial cross section of the quadrangular pyramid 123 may be the same as the open angle P or different.
【００１９】上下部ロール１２０Ａ，１２０Ｂで複合シ
ート１１５を賦型すると、シート１１５は、四角錐１２
３に圧接するその上面の部位が漏斗状に特に深くへこ
み、下面が下方向に突出する。その突出する部分の下端
は、四角錐１２３の先端部によって押圧され、時には突
き破られることにより、シート１１５の構成繊維が毛羽
となって下方向に突出したり、繊維どうしの間隔が広が
って開孔１５が形成されたりする。四角錐１２３の頂部
は、上部ロール１２０Ａの軸方向に間欠的に並んでいる
から、シート１１５の漏斗状のへこみと、それに対応す
る下面の突出部分とは、シート１１５の幅方向に間欠的
に形成される。このようにして図２〜５に例示の端面形
状が生じる。表面シート２の谷部１２は、一条の四角錐
１２３によって形成され、谷部１２のうちの第２の谷部
１８とその下面にある凸部３２とは、個々の四角錐１２
３によって形成される。谷部１２の開孔１５は、四角錐
１２３の先端部によって形成される。When the composite sheet 115 is shaped by the upper and lower rolls 120A and 120B, the sheet 115 becomes a square pyramid 12.
The part of the upper surface that is pressed against 3 is indented particularly deeply in a funnel shape, and the lower surface projects downward. The lower end of the protruding portion is pressed by the tip of the quadrangular pyramid 123 and is sometimes pierced, so that the constituent fibers of the sheet 115 become fluff and protrude downward, or the distance between the fibers widens to open the holes. 15 is formed. Since the tops of the quadrangular pyramids 123 are arranged intermittently in the axial direction of the upper roll 120A, the funnel-shaped dents of the sheet 115 and the corresponding protruding portions of the lower surface are intermittently arranged in the width direction of the sheet 115. It is formed. In this way, the end face shapes illustrated in FIGS. The valleys 12 of the topsheet 2 are formed by a single row of pyramids 123, and the second valleys 18 of the valleys 12 and the protrusions 32 on the lower surface of the valleys 12 are the individual pyramids 12.
3 formed. The opening 15 of the valley 12 is formed by the tip of the quadrangular pyramid 123.
【００２０】賦型された複合シート１１５は、所要寸法
に裁断して生理用ナプキン１の表面シート２として使用
する。なお、四角錐１２３に押圧されて生じた下面凸部
３２からは繊維が垂下することがあり、この繊維が吸液
性コア４の構成繊維に絡み付くと、表面シート２とコア
４とが互いに離間しにくくなるという効果を生じる。ま
た、複合シート１１５のフィラメントは、賦型の前後に
おいて不織布の組織が乱れるのを防止する。この発明に
かかる方法において、四角錐１２３は、三角錐や、その
他の形状の錐体に替えることができる。The shaped composite sheet 115 is cut into a required size and used as the topsheet 2 of the sanitary napkin 1. Fibers may hang down from the lower surface convex portion 32 generated by being pressed by the quadrangular pyramid 123. When the fibers are entangled with the constituent fibers of the liquid-absorbent core 4, the topsheet 2 and the core 4 are separated from each other. The effect is that it becomes difficult to do. Further, the filaments of the composite sheet 115 prevent the texture of the nonwoven fabric from being disturbed before and after shaping. In the method according to the present invention, the quadrangular pyramid 123 can be replaced with a triangular pyramid or a pyramid having another shape.
【００２１】[0021]
【発明の効果】この発明にかかる表面シートの製造方法
では、不織布とこれに接合するフィラメントとからなる
複合シートを、表面に錐体が配列されたエンボス手段
と、その列に沿って延びる山部と谷部とを有するエンボ
ス手段との間に供給して賦型するから、この複合シート
には、フィラメントと直交する方向に延び、かつ、フィ
ラメントの長手方向で交互に反復する山部と谷部とが形
成される。かかる複合シートを所要寸法に裁断して得ら
れる表面シートは、フィラメント長手方向に屈曲が容易
な、柔軟なシートとなる。また、谷部の下面側に凸部を
有する態様の表面シートは、その凸部において吸液性コ
アに密着し、体液のコアへの移行を促進する。In the method for producing a surface sheet according to the present invention, a composite sheet comprising a non-woven fabric and filaments bonded to the nonwoven fabric is embossed with cones on the surface, and ridges extending along the row. And the embossing means having a valley portion are provided for shaping, so that the composite sheet has peaks and valleys that extend in the direction orthogonal to the filament and are alternately repeated in the longitudinal direction of the filament. And are formed. A surface sheet obtained by cutting such a composite sheet into a required size is a flexible sheet that is easily bent in the filament longitudinal direction. Further, the surface sheet having the convex portion on the lower surface side of the valley portion adheres to the liquid-absorbent core at the convex portion and promotes the transfer of body fluid to the core.
【図１】生理用ナプキンの部分破断斜視図。FIG. 1 is a partially broken perspective view of a sanitary napkin.
【図２】表面シートの部分拡大図。FIG. 2 is a partially enlarged view of a topsheet.
【図３】図２のIII −III 線端面図。3 is an end view taken along line III-III of FIG.
【図４】図２のIV−IV線端面図。4 is an end view taken along line IV-IV of FIG.
【図５】図２のＶ−Ｖ線端面図。FIG. 5 is an end view taken along line VV of FIG. 2;
【図６】一対のエンボスロールの簡略化した斜視図。FIG. 6 is a simplified perspective view of a pair of embossing rolls.
【図７】噛み合った一対のエンボスロールの側面図。FIG. 7 is a side view of a pair of meshed embossing rolls.
【図８】図７と異なる噛み合い状態にあるエンボスロー
ルの側面図。FIG. 8 is a side view of the embossing roll in a meshing state different from that of FIG.
【図９】図７，８と異なる噛み合い状態にあるエンボス
ロールの側面図。FIG. 9 is a side view of the embossing roll in a meshed state different from those in FIGS.
２ 表面シート ６ 不織布 ７ フィラメント ９ 上面 １０ 頂部 １１ 山部 １２ 谷部 １５ 開孔 １２０ エンボス手段（エンボスロール） １２０Ａ エンボス手段（上部エンボスロール） １２０Ｂ エンボス手段（下部エンボスロール） １２３ 錐体 １２１ 山部 １２２ 谷部 2 Topsheet 6 Nonwoven fabric 7 Filament 9 Top surface 10 Top 11 Peaks 12 Valleys 15 Holes 120 Embossing means (embossing rolls) 120A Embossing means (upper embossing rolls) 120B Embossing means (lower embossing rolls) 123 Cone 121 Mountains 122 Tanibe
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｄ０６Ｍ 17/00 Ｄ０６Ｍ 17/00 Ｚ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Office reference number FI Technical display location D06M 17/00 D06M 17/00 Z
Claims (3)
上面に、互いに平行に延びる複数条の熱可塑性合成樹脂
フィラメントが連続的に接合した体液吸収性物品用表面
シートの製造方法であって、 前記不織布とフィラメントとが、該フィラメントが熱軟
化状態にあるときに、互いに噛み合うことが可能な一対
のエンボス手段間に供給されて賦型され、 前記エンボス手段の一方が前記不織布の上面に向かって
垂下し、前記フィラメントが延びる方向と、該方向に直
交する方向とに複数条をなして配列された錐体を有し、 前記エンボス手段のもう一方が、前記フィラメントが延
びる方向に直交して延在し、かつ、その延びる方向に交
互に反復される断面Ｖ字型の谷部と逆Ｖ字型の山部とを
有し、 前記谷部は、前記フィラメントに直交して配列された一
条の前記錐体群が嵌入可能に形成され、前記山部は、前
記一条の錐体群と、これと隣り合う一条の錐体群との間
に嵌入可能に形成されていることを特徴とする前記方
法。1. A method for producing a surface sheet for a body fluid absorbent article, wherein a plurality of thermoplastic synthetic resin filaments extending in parallel to each other are continuously joined to the upper surface of a liquid-permeable nonwoven fabric made of thermoplastic synthetic fiber. The non-woven fabric and the filament are shaped by being supplied between a pair of embossing means capable of meshing with each other when the filament is in a heat softened state, and one of the embossing means faces the upper surface of the non-woven fabric. Has a cone arranged in a plurality of lines in a direction in which the filament extends and in a direction orthogonal to the direction, and the other of the embossing means is orthogonal to the direction in which the filament extends. It has a valley part having a V-shaped cross section and a peak part having an inverted V-shape which extend and are alternately repeated in the extending direction, and the valley part is arranged orthogonal to the filament. It is formed so that the above-mentioned one-sided cone group can be inserted, and the mountain portion is formed so as to be able to be inserted between the one-sided cone group and the adjacent one-sided cone group. The method characterized by the above.
ある請求項１記載の方法。2. The method according to claim 1, wherein the cone is one of a pyramid and a cone.
であり、該ロールの一方がその表面に軸方向と周方向と
に配列された複数条の前記錐体を有し、前記ロールのも
う一方がその表面に軸方向に延在し、周方向に交互に反
復する前記谷部と山部とを有している請求項１または２
記載の方法。3. The embossing means is a pair of embossing rolls, one of the rolls having a plurality of the cones arranged in the axial direction and the circumferential direction on the surface thereof, and the other of the rolls. 3. The surface has the troughs and peaks extending in the axial direction and alternately repeating in the circumferential direction.
The described method.
Priority Applications (13)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04322496A JP3288920B2 (en) | 1996-02-29 | 1996-02-29 | Method for producing liquid-permeable topsheet of body fluid-absorbing article |
| MYPI97000717A MY117643A (en) | 1996-02-29 | 1997-02-25 | Liquid-permeable topsheet for body exudates absorbent article, apparatus and method for manufacturing same |
| TW088212079U TW410596U (en) | 1996-02-29 | 1997-02-27 | Liquid-permeable topsheet for body exudates absorbent article and apparatus for manufacturing same |
| EP97870031A EP0792629B1 (en) | 1996-02-29 | 1997-02-27 | Liquid-permeable topsheet for body exudates absorbent article, apparatus and method for manufacturing same |
| SG1997000595A SG65639A1 (en) | 1996-02-29 | 1997-02-27 | Liquid-permeable topsheet for body exudates absorbent article apparatus and method for manufacturing same |
| IDP970605A ID15988A (en) | 1996-02-29 | 1997-02-28 | TOOLS AND METHODS OF MAKING SHEETS THAT CAN BE OVERCOME LIQUID |
| KR1019970006737A KR100452238B1 (en) | 1996-02-29 | 1997-02-28 | Liquid-permeable topsheet for body exudates absorbent article, apparatus and method for manufacturing same |
| US08/808,404 US6096016A (en) | 1996-02-29 | 1997-02-28 | Liquid-permeable topsheet for body exudates absorbent article, apparatus and method for manufacturing same |
| IDP00200100511D ID30111A (en) | 1996-02-29 | 1997-02-28 | SHEETS THAT CAN BE OBTAINED LIQUID FOR THE BODY ABSORPTION ABSORPTION MATERIAL, APARATUS AND THE PRODUCTION METHOD (Fraction from NO. P970605) |
| CNB971000220A CN1157170C (en) | 1996-02-29 | 1997-02-28 | Liquid-permeable topsheet for body exudates absorbent article, apparatus and method for manufacturing same |
| IDP00200100510D ID28992A (en) | 1996-02-29 | 1997-09-04 | SHEETS THAT CAN BE OBTAINED LIQUID FOR THE BODY ABSORPTION ABSORPTION MATERIAL, APARATUS AND THE PRODUCTION METHOD (Fraction P-970605) |
| US09/178,551 US6176954B1 (en) | 1996-02-29 | 1998-10-26 | Liquid-permeable topsheet for body exudates absorbent article, apparatus and method for manufacturing same |
| US09/178,817 US6039555A (en) | 1996-02-29 | 1998-10-26 | Liquid-permeable topsheet for body exudates absorbent article, apparatus and method for manufacturing same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04322496A JP3288920B2 (en) | 1996-02-29 | 1996-02-29 | Method for producing liquid-permeable topsheet of body fluid-absorbing article |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09234221A true JPH09234221A (en) | 1997-09-09 |
| JP3288920B2 JP3288920B2 (en) | 2002-06-04 |
Family
ID=12657951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP04322496A Expired - Lifetime JP3288920B2 (en) | 1996-02-29 | 1996-02-29 | Method for producing liquid-permeable topsheet of body fluid-absorbing article |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3288920B2 (en) |
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