JP3288920B2 - Method for producing liquid-permeable topsheet of body fluid-absorbing article - Google Patents
Method for producing liquid-permeable topsheet of body fluid-absorbing articleInfo
- Publication number
- JP3288920B2 JP3288920B2 JP04322496A JP4322496A JP3288920B2 JP 3288920 B2 JP3288920 B2 JP 3288920B2 JP 04322496 A JP04322496 A JP 04322496A JP 4322496 A JP4322496 A JP 4322496A JP 3288920 B2 JP3288920 B2 JP 3288920B2
- Authority
- JP
- Japan
- Prior art keywords
- filament
- nonwoven fabric
- valley
- cones
- embossing
- 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
Landscapes
- Manufacturing Of Multi-Layer Textile Fabrics (AREA)
- Nonwoven Fabrics (AREA)
- Treatment Of Fiber Materials (AREA)
- Absorbent Articles And Supports Therefor (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
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 surface sheet used for a body fluid absorbing article such as a sanitary napkin or a disposable diaper.
【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 Japanese Patent Application Laid-Open No. 57-82505 discloses a method in which a hydrophobic net-like sheet using a thermoplastic synthetic resin is superposed on a hydrophilic sheet and subjected to a hot embossing treatment. A technique used for a topsheet is 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 topsheet in which a plurality of thermoplastic synthetic resin film strips are joined in parallel with each other on the upper surface of a liquid-permeable nonwoven fabric. The nonwoven fabric and the strip are welded to each other under heat and pressure to be integrated, and the nonwoven fabric portion except 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-like sheet or a film strip of a thermoplastic synthetic resin is used to improve the strength of the topsheet, regulate the flow direction of bodily fluids in the topsheet, or absorb the topsheet into a core. It exerts a concealing effect on the performed 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 prior art, the surface sheet obtained by welding a net-like sheet or film of a thermoplastic synthetic resin to a nonwoven fabric has a higher rigidity at a welded portion than at a non-welded portion. And thereby the flexibility of the entire sheet may be impaired. Such a topsheet does not easily adhere to the skin of the wearer of the article, and 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。Accordingly, the present invention provides a method of manufacturing a liquid-permeable topsheet by continuously bonding filaments to the upper surface of a nonwoven fabric, wherein the bonding does not impair the flexibility of the topsheet. Another object of the present invention is to provide a method that can reduce the degree of damage even if it is lost.
【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-mentioned problems, according to the present invention, a plurality of thermoplastic synthetic resin filaments extending in parallel to each other extend on the upper surface of a liquid-permeable nonwoven fabric made of thermoplastic synthetic fibers. The method is based on a method of manufacturing a topsheet for a bodily fluid-absorbent article, which is chemically 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。[0008] On this premise, the present invention is characterized in that the nonwoven fabric and the filament are supplied between a pair of embossing means that can engage 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 non-woven fabric, and has a cone in which a plurality of filaments are arranged in a direction in which the filament extends and a direction perpendicular to the direction,
The other of the embossing means extends perpendicular to the direction in which the filament extends, and has a valley having a V-shaped cross section and an inverted V-shaped ridge which are alternately repeated in the extending direction. The valleys are formed so that a single group of cones arranged perpendicular to the filament can be fitted therein, and the peaks are formed by the single group of cones and the single group of cones adjacent thereto. That they 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。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A sanitary napkin will be described as an example of a body fluid absorbing article with reference to the accompanying drawings, and the details of the method for producing a liquid permeable surface sheet according to the present invention will be described below.
【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 absorbing property interposed between the two sheets 2, 3. The front and back sheets 2 and 3 are joined to each other at a portion extending from the periphery of the core 4. Top sheet 2
Is composed of a nonwoven fabric 6 and a plurality of filaments 7 on the upper surface thereof and extending in parallel with 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。FIGS. 2, 3, and 4 are a partially enlarged view of FIG. 1 and an end view taken along lines III-III and IV-IV of FIG. The nonwoven fabric 6 is formed by entanglement of thermoplastic synthetic fibers that have been subjected to hydrophilic treatment, and the plurality of thermoplastic synthetic resin filaments 7 are formed by continuously joining the lower surface portion 8 to the upper surface 9 of the nonwoven fabric 6. I have. Adjacent filaments 7 have the required spacing.
【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 alternately repeated at a required period in the longitudinal direction of the filament 7. These peaks 11 and valleys 12 form the filament 7
1 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, or higher than, the top 10 of the filament 7. The fiber density of the nonwoven fabric 6 may be substantially uniform in addition to the case where the fiber density gradually increases from the peak 11 toward the valley 12 as shown in FIGS. In addition, as shown in FIGS. 2 and 3, at the bottom of the valley 12, the fiber interval is locally relatively large, and an opening 15 extending between the upper and lower surfaces of the nonwoven fabric 6 may be formed. . Furthermore, the fiber density may be relatively high at the periphery of the opening 15. This latter aspect is illustrated in FIG. 3 as valley 12A. Figures 3 and 4
As is apparent from the above description, in the nonwoven fabric 6, a concave portion 31 is formed on the lower surface side of the peak portion 11, and a 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 VV of FIG. 2 shown in FIG. 5, the valley 12 has a second peak 17 alternately repeated in its longitudinal direction (left-right direction in FIG. 2). And a second valley 18. However, the height of the second peak 17 does not exceed the height of the peak 11. Second valley 1
8 may have a fiber density higher than that of the second peak 17 and may have openings 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 configuration, since the topsheet 2 has the bellows structure including the peaks 11 and the valleys 12, it is easy to bend in the longitudinal direction. Fits well to the wearer's body. Most of the excreted menstrual blood diffuses from a place where the fiber density is low to a place where the fiber density is high, that is, from the peak 11 to the valley 12, and moves to the core 4 from the bottom of the valley 12. In the topsheet 2, since the peak 11 mainly comes into contact with the skin and the valley 12 tends to separate from the skin, menstrual blood diffused into the valley 12 moves away from the skin, and the wet feeling caused by wearing the napkin 1 occurs. Contributes to the reduction of If there is a large opening 15 at the bottom of the valley 12, menstrual blood in the valley 12 can be transferred to the core 4 more quickly. In particular, when the topsheet 2 is in the mode shown in FIG. 6, the peripheral edge of the opening 15 adheres well to the core 4, and the transfer of menstrual blood is promoted. When the upper surface 9 of the nonwoven fabric 6 is at the same level as or higher than the top 10 of the filament 7, the filament 7 is less likely to touch the wearer's skin and give the synthetic resin a unique feel, and the topsheet 2 Will feel like cloth. When the topsheet 2 has undulations on the upper and lower surfaces as shown in FIG. 6, the cushioning property when it comes into contact with 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 manufacturing the topsheet 2 is as follows. First, a continuous nonwoven web to be the nonwoven fabric 6 is supplied 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 are 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 join them together, and the peaks and valleys to be the peaks 11 and valleys 12 of the topsheet 2 are formed. Form and obtain a composite sheet. This composite sheet is cut into required dimensions and used as a top 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 the nonwoven fabric web is made of a core-sheath composite fiber of polyethylene and polypropylene having a weave of 4 d and a cut length of 51 mm (ES fiber EAC-704V06 manufactured by Chisso Corporation), weighing 20 g / m 2.
There is a thermal bond nonwoven fabric having an apparent thickness of 0.2 mm and a fiber surface subjected to hydrophilic treatment to a required degree. As an example of the filament, low-density polyethylene (Exelen VL800 manufactured by Sumitomo Chemical Co., Ltd.) having a density of 0.905 and a melt flow rate of 20 accounts for 95 to 60% by weight, and a processing aid for facilitating the formation of the filament. A width of 0.1 to 1.0 mm obtained by extruding a mixture containing 5 to 40% by weight of microcrystalline wax as a blood repellent, TiO 2 as a coloring agent,
There is a filament with a thickness of 0.01-0.07 mm. The filaments are preferably arranged on the nonwoven 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）。FIGS. 6 and 7 are a schematic partial perspective view and a partial side view of an embossing roll 120 used for shaping peaks and valleys of the composite sheet. Reference numeral 115 denotes a virtual line. The embossing roll 120 includes an upper roll 120A and a lower roll 12.
0B, and in the upper roll 120A, the square pyramid 12
3 are arranged in a plurality of lines in the axial direction AA and the circumferential direction BB of the roll. In the lower roll 120B, inverted V-shaped peaks 121 and V-shaped valleys 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 mesh in a clockwise direction and a counterclockwise direction, respectively, and a group of quadrangular pyramids 123 arranged in the axial direction AA of the upper roll 120A comes downward in the vertical direction in the figure. Can be fitted into the valley 122 of the lower roll 120B, and the circumferential direction BB
The crest 121 of the lower roll 120B can be fitted between two groups of adjacent quadrangular pyramids 123 arranged side by side (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。FIGS. 7, 8, and 9 show upper and lower rolls 120.
Various aspects when A, 120B mesh are shown. In FIG. 7, the cross-sectional shape of the quadrangular pyramid 123 of the upper roll 120A is substantially the same as the cross-sectional shape of the peak 111 and the valley 112 of the lower roll 120B, and the gap between the meshed upper and lower rolls 120A and 120B is substantially equal. 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 pyramid 123 and the bottom of the valley 112, and the widest between the base of the pyramid 123 and the top of the peak 111. ing. In FIG. 9, the gap is square pyramid 1
23 is the narrowest between the base of the ridge 111 and the top of the peak 111, and is widest between the top of the pyramid 123 and the bottom of the valley 112. In these illustrated examples, the upper roll 12
The square pyramid 123 of 0A has an opening angle P (see FIG. 7) of a circumferential cross section passing through its vertex of 30 to 70 ° and a height H of 1 to 5 mm.
And the crest 11 of the lower roll 120B.
1 and the valley 112 can be dimensioned so that any of FIGS. 7, 8, and 9 can be realized.
The open angle of the quadrangular pyramid 123 in the axial cross section may be the same as or different from the open angle P in some cases.
【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 is
The part of the upper surface which is pressed against 3 is particularly deeply recessed in a funnel shape, and the lower surface protrudes downward. The lower end of the protruding portion is pressed by the tip of the quadrangular pyramid 123 and sometimes pierced, so that the constituent fibers of the sheet 115 protrude downward as fluff, or the interval between the fibers is widened and the hole is opened. 15 are formed. Since the tops of the quadrangular pyramids 123 are intermittently arranged in the axial direction of the upper roll 120A, the funnel-shaped dent of the sheet 115 and the corresponding projecting portion 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 quadrangular pyramid 123, and the second valleys 18 of the valleys 12 and the projections 32 on the lower surface thereof are formed by individual quadrangular 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 required dimensions and used as the top sheet 2 of the sanitary napkin 1. The fibers may hang down from the lower surface protruding portions 32 generated by being pressed by the quadrangular pyramids 123, and when these fibers become entangled with the constituent fibers of the absorbent core 4, the topsheet 2 and the core 4 are separated from each other. This has the effect of making it difficult to perform. In addition, the filaments of the composite sheet 115 prevent the structure 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 by a triangular pyramid or a pyramid of 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。According to the method for producing a topsheet according to the present invention, a composite sheet comprising a nonwoven fabric and filaments bonded to the nonwoven fabric is formed by embossing means having cones arranged on the surface, and ridges extending along the rows. And the embossing means having the valleys, the composite sheet has a ridge and a valley which extend in a direction perpendicular to the filaments and alternately repeat in the longitudinal direction of the filaments. Are formed. The topsheet obtained by cutting such a composite sheet into required dimensions is a flexible sheet that is easily bent in the filament longitudinal direction. Further, the topsheet having the convex portion on the lower surface side of the valley portion adheres tightly to the absorbent core at the convex portion and promotes the transfer of the bodily 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。FIG. 3 is an end view taken along line III-III in FIG. 2;
【図４】図２のIV−IV線端面図。FIG. 4 is an end view taken along line IV-IV of FIG. 2;
【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 engaged 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。8 is a side view of the embossing roll in a different engagement state from 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 different meshing state from 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 Top sheet 6 Non-woven fabric 7 Filament 9 Upper surface 10 Top 11 Top 12 Peak 12 Valley 15 Opening 120 Embossing means (embossing roll) 120A Embossing means (upper embossing roll) 120B Embossing means (lower embossing roll) 123 Pyramid 121 Peak 122 Valley
フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ Ｄ０６Ｃ 23/04 Ｄ０６Ｍ 17/00 Ｚ Ｄ０６Ｍ 17/00 (58)調査した分野(Int.Cl.7，ＤＢ名) A61F 13/15 - 13/84 Continuation of the front page (51) Int.Cl. 7 identification code FI D06C 23/04 D06M 17/00 Z D06M 17/00 (58) Fields investigated (Int.Cl. 7 , DB name) A61F 13/15-13 / 84
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, comprising a plurality of thermoplastic synthetic resin filaments extending parallel to each other continuously joined to the upper surface of a liquid-permeable nonwoven fabric made of thermoplastic synthetic fibers. The nonwoven fabric and the filament are supplied and shaped between a pair of embossing means that can engage with each other when the filament is in a heat-softened state, and one of the embossing means faces the upper surface of the nonwoven fabric. And has a cone arranged in a plurality of rows in a direction in which the filament extends and a direction perpendicular to the direction, and the other of the embossing means is perpendicular to the direction in which the filament extends. A valley having a V-shaped cross section and an inverted V-shaped ridge that extend and are alternately repeated in the extending direction, wherein the valleys are arranged orthogonal to the filament. A single set of cones formed so as to be fittable, and the crest portion is formed so as to be fittable between the one set of cones and a set of adjacent cones. The method as recited above.
ある請求項１記載の方法。2. The method of claim 1, wherein said 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 said rolls having a plurality of said cones arranged on its surface in an axial direction and a circumferential direction, and the other of said rolls 3. A valley and a ridge extending on the surface 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 |
| 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) |
| 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 |
| 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 JPH09234221A (en) | 1997-09-09 |
| JP3288920B2 true 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) |
Cited By (2)
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|---|---|---|---|---|
| JP2008113866A (en) * | 2006-11-06 | 2008-05-22 | Uni Charm Corp | Absorbent article |
| CN101674793A (en) * | 2007-05-24 | 2010-03-17 | 花王株式会社 | Surface sheet for absorptive article, method of producing the surface sheet, and absorptive article |
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| JP3748743B2 (en) * | 1999-10-04 | 2006-02-22 | ユニ・チャーム株式会社 | Absorbent article and manufacturing method thereof |
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| JP5069983B2 (en) * | 2007-09-07 | 2012-11-07 | 花王株式会社 | Nonwoven fabric and method for producing the same |
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| JP5590834B2 (en) * | 2009-08-11 | 2014-09-17 | ユニ・チャーム株式会社 | Nonwoven fabric and method for producing the same |
| JP5268854B2 (en) | 2009-10-09 | 2013-08-21 | 花王株式会社 | Method for producing flexible sheet |
| JP5070275B2 (en) * | 2009-12-25 | 2012-11-07 | 花王株式会社 | Absorbent article surface sheet |
| JP5070302B2 (en) * | 2010-01-06 | 2012-11-14 | 花王株式会社 | Absorbent article surface sheet |
| JP5487233B2 (en) * | 2012-03-30 | 2014-05-07 | 大王製紙株式会社 | Method for manufacturing absorbent article |
| JP6047428B2 (en) * | 2012-06-07 | 2016-12-21 | 花王株式会社 | Non-woven |
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1996
- 1996-02-29 JP JP04322496A patent/JP3288920B2/en not_active Expired - Lifetime
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|---|---|---|---|---|
| JP2008113866A (en) * | 2006-11-06 | 2008-05-22 | Uni Charm Corp | Absorbent article |
| CN101674793A (en) * | 2007-05-24 | 2010-03-17 | 花王株式会社 | Surface sheet for absorptive article, method of producing the surface sheet, and absorptive article |
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Also Published As
| Publication number | Publication date |
|---|---|
| JPH09234221A (en) | 1997-09-09 |
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