JP4931580B2 - Top sheet for absorbent articles - Google Patents

Top sheet for absorbent articles Download PDF

Info

Publication number
JP4931580B2
JP4931580B2 JP2006355843A JP2006355843A JP4931580B2 JP 4931580 B2 JP4931580 B2 JP 4931580B2 JP 2006355843 A JP2006355843 A JP 2006355843A JP 2006355843 A JP2006355843 A JP 2006355843A JP 4931580 B2 JP4931580 B2 JP 4931580B2
Authority
JP
Japan
Prior art keywords
nonwoven fabric
long fibers
aggregate
long
fibers
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.)
Active
Application number
JP2006355843A
Other languages
Japanese (ja)
Other versions
JP2008161526A (en
Inventor
由佳 林
隆弘 加藤
健一 佐藤
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.)
Kao Corp
Original Assignee
Kao Corp
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 Kao Corp filed Critical Kao Corp
Priority to JP2006355843A priority Critical patent/JP4931580B2/en
Priority to KR1020070132227A priority patent/KR101429932B1/en
Priority to CN 200710300198 priority patent/CN101219078B/en
Publication of JP2008161526A publication Critical patent/JP2008161526A/en
Application granted granted Critical
Publication of JP4931580B2 publication Critical patent/JP4931580B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Description

本発明は、使い捨ておむつ、生理用ナプキン、パンティライナー（おりものシート）、失禁パッド等の吸収性物品の肌当接面に好適に用いられる表面シート、又は積層不織布に関する。   The present invention relates to a surface sheet or a laminated nonwoven fabric that is suitably used for skin contact surfaces of absorbent articles such as disposable diapers, sanitary napkins, panty liners (ororimono sheets), and incontinence pads.

使い捨ておむつや生理用ナプキン等の表面シートとして、着用者の肌に当接される面に凹凸を形成したものが汎用されている。凹凸を有する表面シートによれば、凹凸の存在により着用者の肌との接触面積が低減するので、べたつき感やムレの低減を図ることができる。
表面に凹凸を有する表面シートとして、例えば、特許文献１には、第１不織布及び第２不織布が部分的に熱融着されて熱融着部が形成され、第１不織布は、熱融着部以外の部分が、着用者の肌側に向けて突出した凸部を形成しており、該凸部の内部に短繊維が充填されている表面シートが提案されている。
また、特許文献２には、透水性の基材の片面上に、ループ状の連続フィラメント層を形成した表面シートが提案されている。 As surface sheets, such as a disposable diaper and a sanitary napkin, what formed the unevenness | corrugation in the surface contact | abutted to a wearer's skin is used widely. According to the surface sheet having unevenness, the contact area with the wearer's skin is reduced due to the presence of the unevenness, so that it is possible to reduce stickiness and stuffiness.
As a surface sheet having irregularities on the surface, for example, in Patent Document 1, the first nonwoven fabric and the second nonwoven fabric are partially heat-sealed to form a heat-sealed portion, and the first nonwoven fabric is a heat-sealed portion. A surface sheet is proposed in which the other portion forms a convex portion protruding toward the wearer's skin, and the inside of the convex portion is filled with short fibers.
Patent Document 2 proposes a surface sheet in which a loop-shaped continuous filament layer is formed on one side of a water-permeable substrate.

特開２００６−１１５９７４JP 2006-115974 A 特開２００２−０６５７３６JP2002-065736

しかし、特許文献１記載の表面シートは、凸部の内部に充填される繊維が、短繊維であり、凸部の圧縮反発性に劣り、クッション性の点で改善の余地があった。
特許文献２記載の表面シートは、着用者の肌に直接当接する面が、繊維同士の交絡の少ない連続フィラメント層から形成されているため、該フィラメント層に、繊維の配向方向と直交する方向に力が加わると繊維がばらけ、更に撚られて毛玉状になり易い。その毛玉状となった部分は、液を保持し易いため、表面シートの表面近傍に液が残って、吸液後の外観が悪化したり、べたつき等の原因となる場合があった。また、フィラメント層とその下の基材層との間に高さのある空洞を有するため、液の引き込み性にも劣る。 However, in the surface sheet described in Patent Document 1, the fibers filled in the protrusions are short fibers, the protrusions are inferior in compression resilience, and there is room for improvement in terms of cushioning properties.
In the surface sheet described in Patent Document 2, the surface that directly contacts the wearer's skin is formed from a continuous filament layer with few interlaced fibers, so that the filament layer has a direction perpendicular to the fiber orientation direction. When force is applied, the fibers break apart and are further twisted to form a hairball. Since the pilled portion easily retains the liquid, the liquid remains in the vicinity of the surface of the topsheet, and the appearance after liquid absorption may be deteriorated or may cause stickiness. Moreover, since it has a cavity with a height between a filament layer and the base material layer under it, it is inferior to the drawability of a liquid.

従って、本発明の目的は、クッション性及び液の引き込み性に優れた、吸収性物品用の表面シートを提供することにある。   Therefore, the objective of this invention is providing the surface sheet for absorbent articles excellent in cushioning property and liquid drawing-in property.

本発明は、吸収性物品の肌当接面に用いられる表面シートであって、互いに積層された第１不織布及び第２不織布が部分的に熱融着されて熱融着部が形成されており、第１不織布は、前記熱融着部以外の部分が、着用者の肌側に突出して多数の凸部を形成しており、前記凸部及び熱融着部は、交互に且つ一列をなすように配置され且つ該列が多列に配置されており、前記凸部の内部に、長繊維の集合体が配されており、該集合体を構成する多数本の長繊維が、該凸部の突出方向に凸の曲線状をなしている表面シートを提供することにより前記目的を達成したものである。   This invention is a surface sheet used for the skin contact surface of an absorbent article, Comprising: The 1st nonwoven fabric and the 2nd nonwoven fabric which were mutually laminated | stacked are heat-bonded partially, and the heat-fusion part is formed. In the first non-woven fabric, the portions other than the heat-sealed portion protrude toward the wearer's skin to form a large number of convex portions, and the convex portions and the heat-sealed portions alternately and form a line. And the rows are arranged in multiple rows, and an aggregate of long fibers is arranged inside the convex portion, and a plurality of long fibers constituting the aggregate are the convex portion. The above object is achieved by providing a surface sheet having a convex curved shape in the protruding direction.

本発明の吸収性物品用の表面シートは、クッション性及び液の引き込み性に優れている。   The surface sheet for absorbent articles of the present invention is excellent in cushioning properties and liquid drawability.

以下本発明を、その好ましい実施形態に基づき図面を参照しながら説明する。
図１は本発明の吸収性物品用の表面シートの第１実施形態を示す斜視図である。第１実施形態の表面シート１０は、使い捨ておむつ、生理用ナプキン、パンティライナー（おりものシート）、失禁パッドなどの吸収性物品の肌当接面に用いられる。 The present invention will be described below based on preferred embodiments with reference to the drawings.
FIG. 1 is a perspective view showing a first embodiment of a top sheet for absorbent articles of the present invention. The top sheet 10 according to the first embodiment is used on the skin contact surface of an absorbent article such as a disposable diaper, a sanitary napkin, a panty liner (cage sheet), and an incontinence pad.

表面シート１０は、互いに積層された第１不織布１及び第２不織布２と、これら両不織布１，２間に配された長繊維の集合体３からなる。第１不織布１は、表面シート１０における、着用者の肌側に向けられる面（肌当接面）を形成しており、第２不織布２は、表面シート１０における、吸収体側に向けられる面（非肌当接面）を形成している。   The topsheet 10 includes a first nonwoven fabric 1 and a second nonwoven fabric 2 that are laminated with each other, and an aggregate 3 of long fibers disposed between the nonwoven fabrics 1 and 2. The 1st nonwoven fabric 1 forms the surface (skin contact surface) which faces the wearer's skin side in the surface sheet 10, and the 2nd nonwoven fabric 2 is the surface (the surface sheet 10) which faces the absorber side ( Non-skin contact surface).

第１不織布１と第２不織布２とは部分的に熱融着されており、それにより、表面シート１０に多数の熱融着部４が形成されている。第１不織布１は、前記熱融着部４以外の部分が、着用者の肌側に向けて突出して、多数の凸部５を形成している。   The 1st nonwoven fabric 1 and the 2nd nonwoven fabric 2 are partially heat-sealed, and, thereby, many heat-fusion parts 4 are formed in the surface sheet 10. FIG. In the first nonwoven fabric 1, the portions other than the heat-sealing portion 4 protrude toward the wearer's skin to form a large number of convex portions 5.

凸部５及び熱融着部４は、図１に示すように、表面シート１０の面と平行な一方向であるＸ方向に交互に且つ一列をなすように配置されており、そのような列が、前記Ｘ方向に直交するＹ方向に多列に形成されている。互いに隣接する列における凸部５及び熱融着部４は、それぞれ、Ｘ方向にずれて配置されており、より具体的には、半ピッチずれて配置されている。   As shown in FIG. 1, the convex portions 5 and the heat fusion portions 4 are arranged alternately and in a line in the X direction, which is one direction parallel to the surface of the topsheet 10. Are formed in multiple rows in the Y direction perpendicular to the X direction. The convex portions 5 and the heat fusion portions 4 in the rows adjacent to each other are each shifted in the X direction, and more specifically, are shifted by a half pitch.

尚、本実施形態の表面シート１０におけるＸ方向は、表面シート１０の製造工程における第１不織布１、第２不織布２及び長繊維の集合体３それぞれの帯状の原反１Ａ〜３Ａ（図３参照）の流れ方向と一致し、また表面シート１０が吸収性物品に組み込まれたときの該吸収性物品の長手方向又はそれと直交する方向と一致する。また、本実施形態の表面シート１０におけるＸ方向は、第１不織布１、第２不織布２及び長繊維の集合体３それぞれにおける繊維の配向方向とも一致している。また、表面シート１０は、全体として見ると、その第２不織布２側の面がほぼ平坦であり、第１不織布１側の面に起伏の大きな凹凸が形成されている。   In addition, the X direction in the surface sheet 10 of this embodiment is the strip | belt-shaped original fabrics 1A-3A (refer FIG. 3) of the 1st nonwoven fabric 1, the 2nd nonwoven fabric 2, and the aggregate 3 of the long fiber in the manufacturing process of the surface sheet 10. ) And the longitudinal direction of the absorbent article when the topsheet 10 is incorporated into the absorbent article, or the direction perpendicular thereto. Further, the X direction in the topsheet 10 of the present embodiment also coincides with the fiber orientation directions in the first nonwoven fabric 1, the second nonwoven fabric 2, and the long fiber aggregate 3. Moreover, when the surface sheet 10 is seen as a whole, the surface on the second nonwoven fabric 2 side is substantially flat, and unevenness with large undulations is formed on the surface on the first nonwoven fabric 1 side.

表面シート１０における凸部５の内部には、長繊維の集合体３が配されている。長繊維の集合体３は、表面シート１０の製造時に、長手方向に長繊維が配向している帯状原反３Ａとして、第１不織布の帯状原反１Ａと第２不織布２の帯状原反２Ａとの間に導入されており、該集合体３を構成する長繊維３１は、表面シート１０の平面視において、Ｘ方向に配向している。長繊維の集合体３を構成する個々の長繊維３１は、Ｘ方向における表面シート１０の全長に亘っており、表面シート１０のＸ方向において、複数個の熱融着部４に亘る長さを有している。長繊維３１は、Ｘ方向において、５個以上の熱融着部４に亘る長さを有していることが好ましく、１０個以上の熱融着部４に亘る長さを有していることがより好ましい。   An aggregate 3 of long fibers is disposed inside the convex portion 5 in the topsheet 10. When the surface sheet 10 is manufactured, the aggregate 3 of long fibers is a strip-shaped original fabric 1A of the first nonwoven fabric and a strip-shaped original fabric 2A of the second nonwoven fabric 2 as the strip-shaped original fabric 3A in which the long fibers are oriented in the longitudinal direction. The long fibers 31 constituting the aggregate 3 are oriented in the X direction in a plan view of the top sheet 10. The individual long fibers 31 constituting the aggregate 3 of the long fibers extend over the entire length of the topsheet 10 in the X direction, and the lengths of the plurality of heat-sealing portions 4 in the X direction of the topsheet 10 are as follows. Have. The long fiber 31 preferably has a length that extends over five or more heat-sealing portions 4 in the X direction, and has a length that extends over ten or more heat-sealing portions 4. Is more preferable.

本発明において長繊維とは、繊維長をＪＩＳ Ｌ１０１５の平均繊維長測定方法（Ｃ法）で測定した場合、好ましくは７０ｍｍ以上、更に好ましくは８０ｍｍ以上、一層好ましくは１００ｍｍ以上である繊維のことをいう。ただし、表面シート１０における、凸部５及び熱融着部４の列が延びる方向（Ｘ方向）の全長が１００ｍｍ未満である場合には、第１不織布１と第２不織布２との間に配された繊維の殆ど、例えば９０％以上が表面シートの全長にわたって延びている場合には、それらの繊維は長繊維であるとする。本発明で用いられる長繊維は一般に連続フィラメントと呼ばれるものである。また、連続フィラメントの束は一般にトウと呼ばれている。従って、本発明における長繊維とは、連続フィラメントを含む概念のものである。また、本発明における長繊維には、第２実施形態の表面シート１０’におけるように、長繊維の集合体３が存在しないように、熱融着部４の近傍において切断されているものも含まれる。   In the present invention, the long fiber means a fiber having a fiber length of preferably 70 mm or more, more preferably 80 mm or more, and even more preferably 100 mm or more when the fiber length is measured by the average fiber length measurement method (Method C) of JIS L1015. Say. However, when the total length of the surface sheet 10 in the direction (X direction) in which the rows of the convex portions 5 and the heat fusion portions 4 extend is less than 100 mm, the top sheet 10 is disposed between the first nonwoven fabric 1 and the second nonwoven fabric 2. If most of the formed fibers, for example 90% or more, extend over the entire length of the topsheet, they are assumed to be long fibers. The long fibers used in the present invention are generally called continuous filaments. A bundle of continuous filaments is generally called a tow. Therefore, the long fiber in the present invention is a concept including a continuous filament. Further, the long fibers in the present invention include those that are cut in the vicinity of the heat-sealed portion 4 so that the aggregate 3 of long fibers does not exist as in the topsheet 10 ′ of the second embodiment. It is.

長繊維の集合体３は、Ｘ方向における熱融着部４において、第１不織布１と第２不織布２との間に固定されている。長繊維の集合体３の両端部の固定は、該集合体３を介在させた状態で、第１不織布１と第２不織布２とを熱融着させることにより行われている。第１不織布１と第２不織布２とが熱融着した熱融着部４においては、第１不織布１の構成繊維の構成成分と第２不織布２の構成繊維の構成成分とが直接接触して熱融着していることが好ましいが、長繊維の集合体３の構成繊維同士が熱融着しており、それに、第１不織布１の構成繊維と第２不織布２の構成繊維とがそれぞれ熱融着していても良い。   The aggregate 3 of long fibers is fixed between the first nonwoven fabric 1 and the second nonwoven fabric 2 in the heat-sealed portion 4 in the X direction. The both ends of the aggregate 3 of long fibers are fixed by thermally fusing the first nonwoven fabric 1 and the second nonwoven fabric 2 with the aggregate 3 interposed. In the heat-sealed part 4 in which the first nonwoven fabric 1 and the second nonwoven fabric 2 are heat-sealed, the constituent components of the first nonwoven fabric 1 and the constituent components of the second nonwoven fabric 2 are in direct contact with each other. It is preferable that the fibers are heat-sealed, but the constituent fibers of the long-fiber aggregate 3 are heat-sealed, and the constituent fibers of the first nonwoven fabric 1 and the constituent fibers of the second nonwoven fabric 2 are heated. It may be fused.

長繊維の集合体３は、表面シート１０のＸ方向において隣接する熱融着部４，４間においては、図２に示すように、第１不織布１及び第２不織布２と接合されておらず、集合体３を構成する長繊維３１同士も結合されていない。集合体３を構成する多数の長繊維３１は、凸部５の外表面を形成する第１不織布１と平坦状の第２不織布２との間に形成される空間内の略全体に拡がって存在している。
凸部５の内部に位置する長繊維３１は、図２に示すように、凸部５の突出方向(図２における上方)に凸の曲線状をなしており、より具体的には、図２に示すように、Ｙ方向から見たときに、円弧状の頂部を有する山型の形状をなしている。曲線状をなす長繊維３１は、Ｘ方向において、熱融着部４，４間の略中央部に第２不織布２から最も離れた部分を有し、該部分から、両熱融着部４，４それぞれに向かうにしたがって、第２不織布２との距離が漸減している。図２に示すように、曲線状をなす長繊維３１の中でも、第１不織布１の近傍に配された長繊維３１ａは、凸の程度が大きく、第２不織布２の近傍に配された長繊維３１ｂは、凸の程度が小さくなっており、その間に位置する長繊維は、第１不織布１側から第２不織布側に向かうに連れて凸の程度が小さくなっている。 As shown in FIG. 2, the aggregate 3 of long fibers is not joined to the first nonwoven fabric 1 and the second nonwoven fabric 2 between the heat fusion portions 4 and 4 adjacent in the X direction of the topsheet 10. The long fibers 31 constituting the assembly 3 are not bonded to each other. A large number of long fibers 31 constituting the aggregate 3 are present so as to extend over substantially the entire space formed between the first nonwoven fabric 1 and the flat second nonwoven fabric 2 that form the outer surface of the convex portion 5. is doing.
As shown in FIG. 2, the long fibers 31 located inside the convex portion 5 have a convex curved shape in the protruding direction of the convex portion 5 (upward in FIG. 2). More specifically, FIG. As shown in FIG. 4, when viewed from the Y direction, it has a mountain shape with an arcuate top. The long fiber 31 having a curved shape has a portion farthest from the second non-woven fabric 2 in a substantially central portion between the heat fusion portions 4 and 4 in the X direction. The distance from the second nonwoven fabric 2 gradually decreases toward each of the four. As shown in FIG. 2, among the long fibers 31 having a curved shape, the long fibers 31 a disposed in the vicinity of the first nonwoven fabric 1 have a large degree of convexity and are disposed in the vicinity of the second nonwoven fabric 2. In 31b, the degree of convexity is small, and the degree of convexity of the long fibers positioned therebetween decreases from the first nonwoven fabric 1 side toward the second nonwoven fabric side.

第１及び第２不織布としては、各種公知の不織布を用いることができ、例えば、カード法等により得た繊維ウエブにエアースルー法で繊維同士の熱融着点を形成したエアースルー不織布、カード法等により得た繊維ウエブにヒートロール法で繊維同士の熱融着点を形成したヒートロール不織布、ヒートエンボス不織布、スパンボンド不織布、メルトブローン不織布、スパンレース不織布、ニードルパンチ不織布等の種々の不織布を用いることができる。本実施形態の表面シート１０においては、実質的に伸縮しない不織布を、第１及び第２不織布として用いている。   As the first and second non-woven fabrics, various known non-woven fabrics can be used. For example, an air-through non-woven fabric formed by forming a heat-sealing point between fibers by the air-through method on a fiber web obtained by a card method or the like, a card method Various nonwoven fabrics such as heat roll nonwoven fabrics, heat embossed nonwoven fabrics, spunbond nonwoven fabrics, meltblown nonwoven fabrics, spunlace nonwoven fabrics, needle punched nonwoven fabrics, etc., in which heat fusion points are formed on the fiber web obtained by the heat roll method are used. be able to. In the topsheet 10 of the present embodiment, a nonwoven fabric that does not substantially expand and contract is used as the first and second nonwoven fabrics.

第１不織布１としては、肌触りの観点から、前記エアースルー不織布や、ヒートエンボス不織布、エアレイド不織布、ニードルパンチ不織布等が特に好ましく用いられる。
第２不織布としては繊維密度を高め第１不織布１や長繊維の集合体３から液を移動し易くする観点から、前記ヒートロール不織布やヒートエンボス不織布、スパンボンド不織布、メルトブロー不織布、スパンレース不織布等が特に好ましく用いられる。 As the 1st nonwoven fabric 1, the said air through nonwoven fabric, a heat embossed nonwoven fabric, an airlaid nonwoven fabric, a needle punch nonwoven fabric, etc. are used especially preferable from a viewpoint of the touch.
As the second nonwoven fabric, from the viewpoint of increasing the fiber density and facilitating movement of the liquid from the first nonwoven fabric 1 or the aggregate 3 of the long fibers, the heat roll nonwoven fabric, heat embossed nonwoven fabric, spunbond nonwoven fabric, melt blown nonwoven fabric, spunlace nonwoven fabric, etc. Is particularly preferably used.

第１及び第２不織布の構成繊維としては、熱融着性繊維、特に熱可塑性ポリマー材料からなる繊維が好適に用いられる。熱可塑性ポリマー材料としては、ポリエチレンやポリプロピレン等のポリオレフィン、ポリエチレンテレフタレート等のポリエステル、ポリアミドなどが挙げられる。またこれらの熱可塑性ポリマー材料の組合せからなる芯鞘型複合繊維やサイド・バイ・サイド型複合繊維も好適に用いることもできる。第１及び第２不織布は、熱融着性繊維以外に、熱融着性を有しない繊維を構成繊維の一部として含んでいても良い。   As constituent fibers of the first and second nonwoven fabrics, heat-fusible fibers, particularly fibers made of a thermoplastic polymer material are preferably used. Examples of the thermoplastic polymer material include polyolefins such as polyethylene and polypropylene, polyesters such as polyethylene terephthalate, and polyamides. A core-sheath type composite fiber or a side-by-side type composite fiber made of a combination of these thermoplastic polymer materials can also be suitably used. The 1st and 2nd nonwoven fabrics may contain the fiber which does not have heat-fusibility as a part of constituent fiber other than heat-fusible fiber.

第１不織布１は、肌に当たる面を柔軟にする観点から、表面が滑らかであることが望ましく、なるべく繊度の低い繊維で構成されることが好ましい。一方で、第１不織布１は、液を素早く獲得し経血や尿等、***物の漏れを防止する観点から、その繊維密度が、長繊維３１から成る層に比べ粗であることが好ましく、従って、その構成繊維の繊度が、第１及び第２不織布１,２間に介在させる長繊維３１のそれよりも、大きいことが好ましい。
上記の観点から、第１不織布の構成繊維の繊度は、１．０〜８．０ｄｔｅｘであることが好ましく、より低い繊度でより嵩が高く繊維密度を低く出来るという観点から、より望ましくは、捲縮した繊維で形成されることが好ましい。坪量は５〜５０ｇ／ｍ2であることが好ましい。
長繊維３１の繊度は、０．３〜３．０ｄｔｅｘであることが好ましい。第２不織布の構成繊維の繊度は、１．０〜５．０ｄｔｅｘであることが好ましく、坪量は５〜３０ｇ／ｍ2であることが好ましい。 The first nonwoven fabric 1 desirably has a smooth surface from the viewpoint of softening the surface that contacts the skin, and is preferably composed of fibers with as low a fineness as possible. On the other hand, it is preferable that the first nonwoven fabric 1 has a coarser fiber density than the layer composed of the long fibers 31, from the viewpoint of quickly acquiring liquid and preventing leakage of menstrual blood, urine, and the like. Therefore, it is preferable that the fineness of the constituent fibers is larger than that of the long fibers 31 interposed between the first and second nonwoven fabrics 1 and 2.
From the above viewpoint, the fineness of the constituent fibers of the first nonwoven fabric is preferably 1.0 to 8.0 dtex, and more preferably from the viewpoint that the fiber density can be lowered and the fiber density can be lowered with a lower fineness. It is preferable that the fiber is formed from shrunken fibers. The basis weight is preferably 5 to 50 g / m 2 .
The fineness of the long fibers 31 is preferably 0.3 to 3.0 dtex. The fineness of the constituent fibers of the second nonwoven fabric is preferably 1.0 to 5.0 dtex, and the basis weight is preferably 5 to 30 g / m 2 .

長繊維の集合体３を構成する長繊維３１としては、熱融着性繊維及び非熱融着性繊維の何れをも用いることができるが、本実施形態の表面シート１０のように、熱融着部における第１及び第２不織布間に長繊維３１を介在させる場合、熱融着部の接合強度を高める観点から、熱融着可能な繊維であることが好ましい。
ここでいう、熱融着可能な繊維は、少なくとも表面が、加熱により溶融又は軟化し、溶融又は軟化した成分により、第１不織布及び／又は第２不織布の構成繊維と結合し得るものである。
熱融着可能な繊維としては、熱可塑性ポリマー材料からなる繊維が好適に用いられる。熱可塑性ポリマー材料としては、セルロースアセテートや、ポリエチレンやポリプロピレン等のポリオレフィン、ポリエチレンテレフタレート等のポリエステル、ポリアミドなどが挙げられる。またこれらの熱可塑性ポリマー材料の組合せからなる芯鞘型複合繊維やサイド・バイ・サイド型複合繊維も好適に用いることもできる。
長繊維の集合体３は、熱融着可能な繊維を、該集合体３中、３０〜１００重量％含むことが好ましく、５０〜１００重量％含むことがより好ましい。 As the long fiber 31 constituting the aggregate 3 of long fibers, either a heat-fusible fiber or a non-heat-fusible fiber can be used. In the case where the long fibers 31 are interposed between the first and second nonwoven fabrics in the bonding portion, the fibers are preferably heat-bondable from the viewpoint of increasing the bonding strength of the heat-bonding portion.
The fiber that can be heat-sealed here is one that at least the surface is melted or softened by heating, and can be combined with the constituent fibers of the first nonwoven fabric and / or the second nonwoven fabric by the melted or softened component.
As the fiber that can be heat-sealed, a fiber made of a thermoplastic polymer material is preferably used. Examples of the thermoplastic polymer material include cellulose acetate, polyolefins such as polyethylene and polypropylene, polyesters such as polyethylene terephthalate, and polyamides. A core-sheath type composite fiber or a side-by-side type composite fiber made of a combination of these thermoplastic polymer materials can also be suitably used.
The aggregate 3 of long fibers preferably contains 30 to 100% by weight, more preferably 50 to 100% by weight, of the fiber 3 capable of being thermally fused.

また、長繊維の集合体３は、潜在的に細かく捲縮した長繊維３１を主体として構成されていることが好ましい。捲縮した長繊維３１により、凸部５の内部に、長繊維３１を中実な状態に存在させることができ、クッション性及び液の引き込み性を一層向上させることができる。捲縮した長繊維３１を製造設備中で、捲縮が伸びきる程度にまで引張した後、第１不織布１および第２不織布２に熱融着することで、凸部５の内部において、潜在的な捲縮により、伸びきった長繊維３１が収縮し、長繊維の集合体３が、第１不織布１と第２不織布２の間を充填する効果により、中実な凸部５が得られる。   Moreover, it is preferable that the aggregate 3 of long fibers is composed mainly of long fibers 31 that are potentially finely crimped. Due to the crimped long fibers 31, the long fibers 31 can be present in a solid state inside the convex portion 5, and the cushioning property and the liquid drawing property can be further improved. After the crimped long fibers 31 are pulled to the extent that the crimps are fully stretched in the production facility, they are thermally fused to the first nonwoven fabric 1 and the second nonwoven fabric 2, so that there is a potential inside the convex portion 5. Due to the effect of crimping, the elongated long fibers 31 contract and the aggregate 3 of long fibers fills the space between the first non-woven fabric 1 and the second non-woven fabric 2, thereby obtaining a solid convex portion 5.

長繊維の集合体３は、親水性の長繊維を主体として構成されていることが好ましい。
親水性の長繊維としては、本来的に親水性を有する繊維、及び本来的には親水性を有さないが、親水化処理が施されることによって親水性が付与された繊維の双方が包含される。好ましくは、本来的に親水性を有する長繊維であり、例えば、セルロースアセテートやレーヨン、リヨセル、テンセルなどが挙げられる。特に好ましいのは、親水性であり且つ熱融着性である、セルロースアセテートである。セルロースアセテートとしては、セルローストリアセテート及び／又はセルロースジアセテートを用いることが好ましい。
長繊維の集合体３は、親水性の長繊維を、該集合体３中、３０〜１００重量％含むことが好ましく、５０〜１００重量％含むことがより好ましい。 The long fiber aggregate 3 is preferably composed mainly of hydrophilic long fibers.
Hydrophilic long fibers include both fibers that are inherently hydrophilic and fibers that are not inherently hydrophilic but have been rendered hydrophilic by being hydrophilized. Is done. Preferred are long fibers that are inherently hydrophilic, and examples thereof include cellulose acetate, rayon, lyocell, and tencel. Particularly preferred is cellulose acetate, which is hydrophilic and heat fusible. As the cellulose acetate, it is preferable to use cellulose triacetate and / or cellulose diacetate.
The aggregate 3 of long fibers preferably contains 30 to 100% by weight, more preferably 50 to 100% by weight, of the hydrophilic long fibers in the aggregate 3.

表面シート１０の凸部部分（凸部５を有する部分）においては、第１不織布１、長繊維の集合体３、第２不織布２の順に、親水化度が高くなっていることが好ましい。親水化度の勾配を付けることで、尿や経血等の***液を、凸部５表面から長繊維の集合体３にスムーズに移行させ、更にそれを第２不織布２にスムーズに移行させることができる。
また、表面シート１０の凸部部分（凸部５を有する部分）においては、第１不織布１、長繊維の集合体３、第２不織布２の順に、繊維密度が高くなっていることが好ましい。繊維密度の勾配を付けることで、尿や経血等の***液を、凸部５表面から長繊維の集合体３にスムーズに移行させ、更にそれを第２不織布２にスムーズに移行させることができる。 In the convex part (the part having the convex part 5) of the topsheet 10, it is preferable that the degree of hydrophilization becomes higher in the order of the first nonwoven fabric 1, the long fiber aggregate 3, and the second nonwoven fabric 2. By giving a gradient of the degree of hydrophilization, excretory fluid such as urine and menstrual blood is smoothly transferred from the surface of the convex portion 5 to the aggregate 3 of long fibers, and further smoothly transferred to the second nonwoven fabric 2. Can do.
Moreover, in the convex part (part which has the convex part 5) of the surface sheet 10, it is preferable that the fiber density becomes high in order of the 1st nonwoven fabric 1, the aggregate 3 of the long fiber, and the 2nd nonwoven fabric 2. By adding a gradient of fiber density, the excretion fluid such as urine and menstrual blood can be smoothly transferred from the surface of the convex portion 5 to the aggregate 3 of long fibers, and further smoothly transferred to the second nonwoven fabric 2. it can.

本実施形態の表面シート１０によれば、凸部５の内部に、凸部５の突出方向に凸の曲線状をなす長繊維３１が配されているため、厚み方向の加圧に対して、凸部５が優れたクッション性を示し、吸収性物品の使用中の肌の動きに追従して凸部が圧縮及び回復を繰り返す。そのため、肌に刺激を与え難く、肌に当たる感触が柔らかい。
また、凸部５及び熱融着部４が、上述した態様に配置されているため、凸部の頂部が一方向に連続的に形成されている従来のものに比べて、表面を液が流れにくく、液漏れ防止に役立つと共に、スポット吸収性にも優れている。また、表面シートが面方向の柔軟性に優れ、Ｘ方向及びＹ方向のいずれにも柔軟に曲がるため、着用者とのフィット性が向上し、また、柔軟性が要求される物品や部位等にも使用可能である。 According to the surface sheet 10 of the present embodiment, since the long fibers 31 having a convex curved shape in the protruding direction of the convex portion 5 are arranged inside the convex portion 5, against pressurization in the thickness direction, The convex part 5 exhibits excellent cushioning properties, and the convex part repeats compression and recovery following the movement of the skin during use of the absorbent article. For this reason, it is difficult to irritate the skin and the touch on the skin is soft.
Moreover, since the convex part 5 and the heat sealing | fusion part 4 are arrange | positioned in the aspect mentioned above, compared with the conventional thing with which the top part of the convex part was continuously formed in one direction, a liquid flows on the surface. It is difficult to prevent liquid leakage and has excellent spot absorbability. In addition, the surface sheet is excellent in flexibility in the surface direction and bends flexibly in both the X direction and the Y direction, so that the fit with the wearer is improved, and also for articles and parts that require flexibility. Can also be used.

また、長繊維の集合体を構成する長繊維が一方向（Ｘ方向）に配向しているため、凸部５の中央部部付近から両熱融着部４，４それぞれに向かって毛管力が高まっており、そのため、第１不織布１を透過した液は、長繊維の集合体３の長繊維の配向方向に沿ってスムーズに流れ、第２不織布２へとスムーズに移行される。そのため、スポット吸収性に一層優れている。   In addition, since the long fibers constituting the aggregate of long fibers are oriented in one direction (X direction), the capillary force is exerted from the vicinity of the central portion of the convex portion 5 toward both the heat fusion portions 4 and 4. Therefore, the liquid which permeate | transmitted the 1st nonwoven fabric 1 flows smoothly along the orientation direction of the long fiber of the aggregate 3 of a long fiber, and is smoothly transferred to the 2nd nonwoven fabric 2. FIG. Therefore, it is further excellent in spot absorbability.

上述した効果の一又は二以上を一層確実に発現させる観点から、表面シート１０は以下の構成を有することが好ましい。
表面シート１０の凸部５を有する部分の厚みＨ（図２参照）は０．６ｍｍ以上、特に１．０ｍｍ以上であることが好ましく、熱融着部４の厚みｈ（図２参照）は０．３ｍｍ以下、特に０．２ｍｍ以下であることが好ましく、これらの厚みの比（Ｈ／ｈ）は少なくとも２以上、特に３以上であることが好ましい。厚みＨの上限、比（Ｈ／ｈ）の上限、厚みｈの下限は、特にないが、厚みＨは３．０ｍｍ以下、比（Ｈ／ｈ）は３０以下、厚みｈは０．１ｍｍ以上とすることが好ましい。
また、表面シート１０の１００ｃｍ2当たりの凸部５の個数は２５０個以上、特に５００個以上であることが好ましい。 From the viewpoint of more surely expressing one or more of the effects described above, the topsheet 10 preferably has the following configuration.
The thickness H (see FIG. 2) of the portion having the convex portion 5 of the surface sheet 10 is preferably 0.6 mm or more, and particularly preferably 1.0 mm or more, and the thickness h (see FIG. 2) of the heat-sealed portion 4 is 0. The thickness ratio (H / h) is preferably at least 2 or more, particularly preferably 3 or more. The upper limit of thickness H, the upper limit of ratio (H / h), and the lower limit of thickness h are not particularly limited, but thickness H is 3.0 mm or less, ratio (H / h) is 30 or less, and thickness h is 0.1 mm or more. It is preferable to do.
Further, the number of the convex portions 5 per 100 cm 2 of the surface sheet 10 is preferably 250 or more, particularly 500 or more.

凸部５のＸ方向の底部寸法Ａ（図１参照）は０．５〜５．０ｍｍ、特に１．０〜４．０ｍｍであることが好ましい。凸部５のＹ方向の底部寸法Ｂ（図１参照）は１．０〜１０ｍｍ、特に２．０〜７．０ｍｍであることが好ましい。
Ｘ方向の底部寸法ＡとＹ方向の底部寸法Ｂとの比（底部寸法Ａ：底部寸法Ｂ）は１：１〜１：１０、特に１：２〜２：５であることが好ましい。凸部５の底部面積（底部寸法Ａ×底部寸法Ｂ）は０．５〜５０ｍｍ2、特に２〜２０ｍｍ2であることが好ましい。
熱融着部４は、Ｘ方向の寸法Ｃ（図１参照）が０．１〜２ｍｍ、特に０．２〜１．０ｍｍであることが好ましく、Ｙ方向の寸法Ｄ（図１参照）が０．２〜５．０ｍｍ、特に０．５〜３．０ｍｍであることが好ましい。 The bottom dimension A (see FIG. 1) of the convex portion 5 in the X direction is preferably 0.5 to 5.0 mm, particularly preferably 1.0 to 4.0 mm. The bottom dimension B (see FIG. 1) in the Y direction of the convex part 5 is preferably 1.0 to 10 mm, particularly preferably 2.0 to 7.0 mm.
The ratio of the bottom dimension A in the X direction to the bottom dimension B in the Y direction (bottom dimension A: bottom dimension B) is preferably 1: 1 to 1:10, particularly 1: 2 to 2: 5. The bottom area (bottom dimension A × bottom dimension B) of the convex portion 5 is preferably 0.5 to 50 mm 2 , particularly preferably 2 to 20 mm 2 .
The heat-sealed portion 4 preferably has a dimension C in the X direction (see FIG. 1) of 0.1 to 2 mm, particularly preferably 0.2 to 1.0 mm, and a dimension D in the Y direction (see FIG. 1) of 0. It is preferably 2 to 5.0 mm, particularly preferably 0.5 to 3.0 mm.

次に、上述した表面シート１０の好ましい製造方法を図３及び図４を参照して説明する。 先ず、図３に示すように、連続搬送される第１不織布１の帯状の原反１Ａに、長繊維の集合体３１の帯状の原反３Ａを合流させ、これらを、周面が凹凸形状となっている第１のロール１１と第１のロールの凹凸形状と噛み合い形状となっている凹凸形状を周面に有する第２のロール１２との噛み合わせ部に噛み込ませ、第１不織布１の原反１Ａを凹凸賦形する。   Next, the preferable manufacturing method of the surface sheet 10 mentioned above is demonstrated with reference to FIG.3 and FIG.4. First, as shown in FIG. 3, the strip-shaped raw fabric 1A of the aggregate 31 of long fibers is joined to the strip-shaped raw fabric 1A of the first nonwoven fabric 1 that is continuously conveyed, and the peripheral surface has an uneven shape. The first nonwoven fabric 1 and the first roll 11 and the second roll 12 having a concavo-convex shape meshing with the concavo-convex shape of the first roll are bitten into the meshing portion of the first nonwoven fabric 1. The substrate 1A is unevenly shaped.

図４には、第１のロール１１の要部拡大図が示されている。第１のロール１１は、所定の歯幅を有する平歯車１１ａ，１１ｂ，・・を複数枚組み合わせてロール状に形成したものである。各歯車の歯幅は、表面シート１０の凸部５におけるＸ方向の寸法を決定する。隣り合う歯車は、その歯のピッチが半ピッチずつずれるように組み合わされている。その結果、第１のロール１１は、その周面が凹凸形状となっている。   FIG. 4 shows an enlarged view of a main part of the first roll 11. The first roll 11 is formed by combining a plurality of spur gears 11a, 11b,... Having a predetermined tooth width into a roll shape. The tooth width of each gear determines the dimension in the X direction of the convex portion 5 of the topsheet 10. Adjacent gears are combined such that the pitch of their teeth is shifted by half a pitch. As a result, the peripheral surface of the first roll 11 has an uneven shape.

第１のロール１１における各歯車の歯溝部には吸引孔１３が形成されている。この歯溝部は、第１のロール１１の周面における凹凸形状のうちの凹部に相当するものである。吸引孔１３は、ブロワや真空ポンプなどの吸引源（図示せず）に通じ、第１のロールと第２のロールとの噛み合い部から第２不織布２との合流部までの間で吸引が行われる様に制御されている。従って、第１のロール１１と第２のロール１２との噛み合いによって凹凸賦形された第１不織布１は、吸引孔１３による吸引力によって第１のロール周面に密着し、その凹凸賦形された状態が保持される。この場合、図４に示すように、隣り合う歯車間に所定の空隙Ｇを設けておくと、第１不織布１に無理な伸長力や、ロールの凹凸噛み合いによる切断効果を加えることなく第１不織布１を第１のロール１１の周面に密着させられる。   A suction hole 13 is formed in the tooth groove portion of each gear in the first roll 11. The tooth groove portion corresponds to a concave portion of the concave and convex shape on the peripheral surface of the first roll 11. The suction hole 13 communicates with a suction source (not shown) such as a blower or a vacuum pump, and performs suction between the meshing part of the first roll and the second roll and the joining part of the second nonwoven fabric 2. It is controlled to be Accordingly, the first non-woven fabric 1 shaped by unevenness by the meshing of the first roll 11 and the second roll 12 is brought into close contact with the peripheral surface of the first roll by the suction force by the suction holes 13, and the unevenness is shaped. The state is maintained. In this case, as shown in FIG. 4, if a predetermined gap G is provided between adjacent gears, the first nonwoven fabric 1 is not subjected to excessive stretching force or cutting effect due to uneven engagement of the rolls. 1 is brought into close contact with the peripheral surface of the first roll 11.

そして、図３に示すように、第１不織布１の原反１Ａを第１のロール１１の周面に引き続き吸引保持した状態下に、第２不織布２の帯状の原反２Ａを重ね合わせ、その重ね合わせたものを第１のロール１１とアンビルロール１５との間で挟圧する。このとき、第１のロール１１とアンビルロール１５の両方又はアンビルロール１５のみを所定温度に加熱しておく。これによって、第１のロール１１における凸部上、つまり各歯車の歯の上に位置する、第１不織布１の原反１Ａ、長繊維の集合体３の帯状の原反３Ａ及び第２不織布２の原反２Ａが熱融着によって接合される。   Then, as shown in FIG. 3, under the state where the raw fabric 1A of the first nonwoven fabric 1 is continuously sucked and held on the peripheral surface of the first roll 11, the strip-shaped raw fabric 2A of the second nonwoven fabric 2 is superposed, The superposed one is clamped between the first roll 11 and the anvil roll 15. At this time, both the first roll 11 and the anvil roll 15 or only the anvil roll 15 are heated to a predetermined temperature. Thereby, the raw fabric 1A of the first nonwoven fabric 1, the strip-shaped raw fabric 3A of the aggregate 3 of the long fibers, and the second nonwoven fabric 2 located on the convex portion of the first roll 11, that is, on the teeth of each gear. The raw fabric 2A is joined by heat fusion.

長繊維の集合体の帯状の原反３Ａとしては、捲縮した長繊維を構成繊維とし、該長繊維が長手方向に配向したものを用いる。そして、原反３Ａを、第１のロール１１と第２のロール１２との噛み合い部に導入する際には、該原反３Ａを、その長手方向に大きく伸長させておき、その状態を維持したまま、第１のロール１１とアンビルロール１５との間で、第１不織布１と第２不織布２との熱融着による接合を行う。第１不織布１と第２不織布２との間に、伸長状態で導入された長繊維の集合体３の原反３Ａは、第１のロール１１とアンビルロール１５との間を通過した後、伸長状態を緩和され、それにより該原反３を構成する長繊維が収縮して、凸部５内に存する長繊維の嵩が増大する。これによって、図２に示すように、凸部５内が長繊維の集合体３によって満たされた表面シート１０が得られる。
第１不織布１と第２不織布２との間に長繊維を固定する際における、長繊維３１又はその集合体の原反３Ａの伸長率は、１０５〜１３０％、特に１１０〜１２０％であることが好ましい。
ここで、長繊維又はその集合体の原反３Ａの伸長率は、下記式で求められる。
原反３Ａの伸長率（％）＝Ｌ2／Ｌ1×１００
（但し、式中Ｌ1は原反を伸長する以前の長さ、製造設備中原反を伸長する装置以前の工程から切り出した単位重量あたりの長繊維集合体の長さ、Ｌ2は製造設備中原反を伸長する装置以降の工程から切り出した単位重量あたりの長繊維集合体の長さ）。 As the strip-shaped raw fabric 3A of the aggregate of long fibers, crimped long fibers are used as constituent fibers, and the long fibers are oriented in the longitudinal direction. And when introducing original fabric 3A into the meshing part of the 1st roll 11 and the 2nd roll 12, this original fabric 3A was extended greatly in the longitudinal direction, and the state was maintained. As it is, the first nonwoven fabric 1 and the second nonwoven fabric 2 are joined by thermal fusion between the first roll 11 and the anvil roll 15. The raw fabric 3A of the aggregate 3 of long fibers introduced in the stretched state between the first nonwoven fabric 1 and the second nonwoven fabric 2 passes between the first roll 11 and the anvil roll 15 and then stretches. The state is relaxed, whereby the long fibers constituting the raw fabric 3 contract, and the bulk of the long fibers existing in the convex portion 5 increases. Thereby, as shown in FIG. 2, the surface sheet 10 in which the inside of the convex part 5 was satisfy | filled with the aggregate 3 of the long fiber is obtained.
When the long fibers are fixed between the first non-woven fabric 1 and the second non-woven fabric 2, the elongation ratio of the raw fibers 3A of the long fibers 31 or their aggregates is 105 to 130%, particularly 110 to 120%. Is preferred.
Here, the elongation ratio of the raw fabric 3A of the long fiber or its aggregate is obtained by the following formula.
Stretch rate (%) of raw fabric 3A = L 2 / L 1 × 100
(However, in the formula, L 1 is the length before the raw fabric is stretched, the length of the long fiber aggregate per unit weight cut out from the process before the apparatus for stretching the raw fabric in the production equipment, and L 2 is the production equipment Nakahara The length of the long fiber aggregate per unit weight cut out from the process after the device for stretching the opposite side).

次に、本発明の第２実施形態の表面シート１０’について図５を参照して説明する。第２実施形態の表面シート１０’については、上述した第１実施形態の表面シート１０との相違点を特に説明し、同様の点について同一の符号を付して説明を省略する。特に説明しない点については、上述した表面シート１０に関する説明が適宜適用される。
第２実施形態の表面シート１０’においては、各凸部５の内部に配されている長繊維の集合体３’が、熱融着部４に実質的に存在していない。
ここで、「実質的に存在していない」とは、表面シート１０’の製造工程において、長繊維の集合体３’を、表面シートの凸部部分のみに配するように工夫しても、少量の長繊維が熱融着部４に配されてしまうことがあることを考慮し、意図せずに、そのような少量の長繊維が存在する場合を許容する趣旨である。
第２実施形態の表面シート１０’は、その製造工程において、長繊維の集合体３’の帯状の原反中に、該長繊維を切断した箇所を所定のパターンで形成しておき、それらの箇所において、第１不織布１の原反と第２不織布２の原反とを接合すること等により製造することができる。
第２実施形態の表面シート１０’によれば、第１実施形態と同様の効果が奏される。
また、第２実施形態の表面シート１０’によれば、第１不織布１と第２不織布２との間が直接的に熱融着により接合されているので、長繊維として、熱融着性のない繊維を用いても、第１不織布１と第２不織布２との間に充分な接合強度を有する表面シートを得ることができる。 Next, a top sheet 10 ′ according to a second embodiment of the present invention will be described with reference to FIG. Regarding the topsheet 10 ′ of the second embodiment, differences from the topsheet 10 of the first embodiment described above will be particularly described, and the same reference numerals will be given to the same points and description thereof will be omitted. About the point which is not demonstrated especially, the description regarding the surface sheet 10 mentioned above is applied suitably.
In the top sheet 10 ′ of the second embodiment, the aggregate 3 ′ of long fibers arranged inside each convex portion 5 is not substantially present in the heat-sealed portion 4.
Here, “substantially does not exist” means that, in the manufacturing process of the topsheet 10 ′, the aggregate 3 ′ of long fibers is devised so as to be arranged only on the convex portion of the topsheet, In consideration of the fact that a small amount of long fibers may be disposed in the heat-sealing part 4, the purpose is to allow such a small amount of long fibers to exist unintentionally.
In the manufacturing process, the surface sheet 10 ′ of the second embodiment is formed in a predetermined pattern in the strip-shaped raw fabric of the long-fiber aggregate 3 ′. It can be manufactured by joining the original fabric of the first nonwoven fabric 1 and the original fabric of the second nonwoven fabric 2 at a location.
According to the top sheet 10 ′ of the second embodiment, the same effects as those of the first embodiment are exhibited.
Moreover, according to the surface sheet 10 ′ of the second embodiment, since the first nonwoven fabric 1 and the second nonwoven fabric 2 are directly joined by thermal fusion, as the long fiber, the thermal fusion property is obtained. Even if a non-woven fiber is used, a surface sheet having sufficient bonding strength between the first nonwoven fabric 1 and the second nonwoven fabric 2 can be obtained.

上述した表面シート１０，１０’は、上述したように、使い捨ておむつ、生理用ナプキン、パンティライナー、失禁パッドなどの吸収性物品の表面シートとして好ましく用いられる。吸収性物品は一般に液透過性の表面シート、液不透過性又は液難透過性の裏面シート及び両シート間に介在配置された液保持性の吸収体を有して構成されている。   As described above, the above-described topsheets 10 and 10 'are preferably used as topsheets for absorbent articles such as disposable diapers, sanitary napkins, panty liners, and incontinence pads. Absorbent articles generally have a liquid-permeable top sheet, a liquid-impermeable or liquid-impermeable back sheet, and a liquid-retaining absorbent disposed between the two sheets.

以上、本発明の表面シートの実施形態について説明したが、本発明は、上記の各実施形態に制限されず、適宜変更可能である。例えば、図１に示した表面シートの凸部５は、四角錐台形状のものであるが、凸部５は、半球状のもの等、他の形状であっても良い。また、互いに隣接する列における凸部５及び熱融着部４が、それぞれ、Ｘ方向にずれる程度は、１／２ピッチに代えて、１／３ピッチ、１／４ピッチ等、任意の大きさとすることができる。また、長繊維の集合体３の長繊維の配向方向は、表面シート１０のＹ方向であっても良く、また、Ｘ方向に配向した長繊維とＹ方向に配向した長繊維とを混在させることもできる。   As mentioned above, although embodiment of the surface sheet of this invention was described, this invention is not restrict | limited to said each embodiment, It can change suitably. For example, the convex portion 5 of the topsheet shown in FIG. 1 has a quadrangular pyramid shape, but the convex portion 5 may have another shape such as a hemispherical shape. In addition, the degree to which the convex portions 5 and the heat-sealing portions 4 in the adjacent rows are displaced in the X direction can be set to an arbitrary size such as 1/3 pitch or 1/4 pitch instead of 1/2 pitch. can do. In addition, the orientation direction of the long fibers of the long fiber aggregate 3 may be the Y direction of the topsheet 10, and the long fibers oriented in the X direction and the long fibers oriented in the Y direction are mixed. You can also.

図１は、本発明の吸収性物品用の表面シートの第１実施形態を示す斜視図である。FIG. 1 is a perspective view showing a first embodiment of a top sheet for absorbent articles of the present invention. 図２は、図１に示す表面シートのＸ方向に沿う断面を拡大して示す拡大断面図である。FIG. 2 is an enlarged cross-sectional view showing an enlarged cross section along the X direction of the topsheet shown in FIG. 図３は、図１に示す表面シートの製造方法の一例を示す模式図である。FIG. 3 is a schematic view showing an example of a method for producing the topsheet shown in FIG. 図４は、図２における第１のロールの要部拡大図である。4 is an enlarged view of a main part of the first roll in FIG. 図５は、本発明の吸収性物品用の表面シートの第２実施形態を示す断面図（図２相当図）である。FIG. 5 is a cross-sectional view (corresponding to FIG. 2) showing a second embodiment of the top sheet for absorbent articles of the present invention.

符号の説明Explanation of symbols

１０ 表面シート
１ 第１不織布
２ 第２不織布
３ 長繊維の集合体
３１ 長繊維
４ 熱融着部
５ 凸部 DESCRIPTION OF SYMBOLS 10 Top sheet 1 1st nonwoven fabric 2 2nd nonwoven fabric 3 Aggregation of long fiber 31 Long fiber 4 Heat-sealing part 5 Convex part

Claims (5)

吸収性物品の肌当接面に用いられる表面シートであって、
互いに積層された第１不織布及び第２不織布が部分的に熱融着されて熱融着部が形成されており、
第１不織布は、前記熱融着部以外の部分が、着用者の肌側に突出して多数の凸部を形成しており
前記凸部及び熱融着部は、交互に且つ一列をなすように配置され且つ該列が多列に配置されており、
前記凸部の内部に、長繊維の集合体が配されており、該集合体を構成する多数本の長繊維は、該凸部の突出方向に凸の曲線状をなしており、
前記長繊維の集合体は、波状に捲縮した長繊維を主体として構成されており、
前記長繊維は、第１不織布及び第２不織布間に前記列が延びる方向に伸長させた状態で導入した後の伸長状態の緩和により、前記凸部の突出方向に凸の曲線状をなしている、表面シート。 A surface sheet used for a skin contact surface of an absorbent article,
The first nonwoven fabric and the second nonwoven fabric laminated to each other are partially heat-sealed to form a heat-sealed portion,
As for the 1st nonwoven fabric, parts other than the above-mentioned heat fusion part project to the wearer's skin side, and form many convex parts. The above-mentioned convex part and heat fusion parts are made into a line alternately. Arranged and the rows are arranged in multiple rows,
Inside of the convex portion, and assembly of the long fibers is arranged, a large number of long fibers constituting The aggregate is Ri your forms a convex curve shape in the protruding direction of the convex portion,
The aggregate of long fibers is mainly composed of long fibers crimped in a wavy shape,
The long fibers have a convex curved shape in the protruding direction of the convex portion due to relaxation of the extended state after being introduced in a state in which the row extends between the first nonwoven fabric and the second nonwoven fabric. , Surface sheet. 前記長繊維の集合体は、熱融着可能な繊維を主体として構成されている、請求項１記載の表面シート。   The top sheet according to claim 1, wherein the aggregate of long fibers is mainly composed of fibers that can be thermally fused. 前記長繊維の集合体は、親水性の長繊維を主体として構成されている請求項１又は２記載の表面シート。 The topsheet according to claim 1 or 2, wherein the aggregate of long fibers is mainly composed of hydrophilic long fibers. 第１不織布、長繊維及び第２不織布の順に、親水化度が高くなっている請求項３記載の表面シート。 The surface sheet according to claim 3 , wherein the degree of hydrophilicity increases in the order of the first nonwoven fabric, the long fibers, and the second nonwoven fabric. 請求項１記載の表面シートの製造方法であって、
第１不織布と長繊維集合体とを、該長繊維集合体をその流れ方向に伸長させた状態で、周面に凹凸形状を有する第１ロールと第２ロールとの噛み合い部に導入して、第１不織布を立体的な形状に変形させた後、第２不織布を重ね合わせ、第１不織布と第２不織布とを前記長繊維集合体を介在させた状態で部分的に熱融着し、次いで、長繊維集合体の伸長状態を緩和する、表面シートの製造方法。 It is a manufacturing method of the surface sheet according to claim 1,
Introducing the first nonwoven fabric and the long fiber aggregate into the meshing portion of the first roll and the second roll having a concavo-convex shape on the peripheral surface in a state where the long fiber aggregate is extended in the flow direction, After the first nonwoven fabric is deformed into a three-dimensional shape, the second nonwoven fabric is overlaid, and the first nonwoven fabric and the second nonwoven fabric are partially heat-sealed with the long fiber assembly interposed therebetween, and then The manufacturing method of the surface sheet which relieves the expansion | extension state of a long-fiber assembly .
JP2006355843A 2006-12-27 2006-12-28 Top sheet for absorbent articles Active JP4931580B2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2006355843A JP4931580B2 (en) 2006-12-28 2006-12-28 Top sheet for absorbent articles
KR1020070132227A KR101429932B1 (en) 2006-12-27 2007-12-17 Topsheet for absorbent article and method for manufacturing the same
CN 200710300198 CN101219078B (en) 2006-12-27 2007-12-19 Face sheet for absorption article and method for producing the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006355843A JP4931580B2 (en) 2006-12-28 2006-12-28 Top sheet for absorbent articles

Publications (2)

Publication Number Publication Date
JP2008161526A JP2008161526A (en) 2008-07-17
JP4931580B2 true JP4931580B2 (en) 2012-05-16

Family

ID=39691761

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2006355843A Active JP4931580B2 (en) 2006-12-27 2006-12-28 Top sheet for absorbent articles

Country Status (1)

Country Link
JP (1) JP4931580B2 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10045889B2 (en) 2014-09-12 2018-08-14 The Procter & Gamble Company Nonwoven material having discrete three-dimensional deformations with wide base openings and specific fiber concentrations
US10064766B2 (en) 2014-09-12 2018-09-04 The Procter & Gamble Company Nonwoven material having discrete three-dimensional deformations that are configured to collapse in a controlled manner
US10076898B2 (en) 2014-09-12 2018-09-18 The Procter & Gamble Company Apparatus having forming members with surface texture for making nonwoven material having discrete three-dimensional deformations with wide base openings
US10226385B2 (en) 2014-09-12 2019-03-12 The Procter & Gamble Company Process for making an absorbent article comprising a topsheet/acquisition layer laminate
US10610423B2 (en) 2016-03-08 2020-04-07 The Procter & Gamble Company Absorbent article comprising a topsheet/acquisition web laminate
US11696856B2 (en) 2017-03-09 2023-07-11 The Procter & Gamble Comoany Three-dimensional materials having apertures and voids

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010148730A (en) * 2008-12-25 2010-07-08 Kao Corp Surface sheet of absorbent article
US8695413B2 (en) * 2011-05-30 2014-04-15 The Procter & Gamble Company Method for evaluating the stickiness of an outer surface on an absorbent article
JP6441629B2 (en) * 2014-09-25 2018-12-19 大王製紙株式会社 Absorbent articles
WO2016103435A1 (en) * 2014-12-26 2016-06-30 新興機械株式会社 Lamination sheet and apparatus and method for manufacturing same
US11365495B2 (en) * 2017-02-28 2022-06-21 Kimberly-Clark Worldwide, Inc. Process for making fluid-entangled laminate webs with hollow projections and apertures
JP7464364B2 (en) 2019-09-02 2024-04-09 花王株式会社 Absorbent articles
CN112455014B (en) * 2020-12-09 2024-03-19 江苏锦琪昶新材料有限公司 Three-layer composite fiber material and preparation method, device and application thereof

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3490291B2 (en) * 1998-05-18 2004-01-26 ユニ・チャーム株式会社 Absorbent articles
JP4518906B2 (en) * 2004-10-20 2010-08-04 花王株式会社 Top sheet for absorbent articles

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10226385B2 (en) 2014-09-12 2019-03-12 The Procter & Gamble Company Process for making an absorbent article comprising a topsheet/acquisition layer laminate
US10045888B2 (en) 2014-09-12 2018-08-14 The Procter & Gamble Company Nonwoven material having discrete three-dimensional deformations with wide base openings
US10064766B2 (en) 2014-09-12 2018-09-04 The Procter & Gamble Company Nonwoven material having discrete three-dimensional deformations that are configured to collapse in a controlled manner
US10076898B2 (en) 2014-09-12 2018-09-18 The Procter & Gamble Company Apparatus having forming members with surface texture for making nonwoven material having discrete three-dimensional deformations with wide base openings
US10105268B2 (en) 2014-09-12 2018-10-23 The Procter & Gamble Company Nonwoven material having discrete three-dimensional deformations with differential opacity regions
US10182949B2 (en) 2014-09-12 2019-01-22 The Procter & Gamble Company Nonwoven material having discrete three-dimensional deformations with wide base openings that are base bonded to additional layer
US10045889B2 (en) 2014-09-12 2018-08-14 The Procter & Gamble Company Nonwoven material having discrete three-dimensional deformations with wide base openings and specific fiber concentrations
US10500826B2 (en) 2014-09-12 2019-12-10 The Procter & Gamble Company Method of making nonwoven material having discrete three-dimensional deformations with wide base openings
US10687987B2 (en) 2014-09-12 2020-06-23 The Procter & Gamble Company Process for making an absorbent article comprising a topsheet/acquisition layer laminate
US10993845B2 (en) 2014-09-12 2021-05-04 The Procter & Gamble Company Process for making an absorbent article comprising a topsheet/acquisition layer laminate
US11154428B2 (en) 2014-09-12 2021-10-26 The Procter & Gamble Company Absorbent articles with indicia and/or color
US10610423B2 (en) 2016-03-08 2020-04-07 The Procter & Gamble Company Absorbent article comprising a topsheet/acquisition web laminate
US11696856B2 (en) 2017-03-09 2023-07-11 The Procter & Gamble Comoany Three-dimensional materials having apertures and voids

Also Published As

Publication number Publication date
JP2008161526A (en) 2008-07-17

Similar Documents

Publication Publication Date Title
JP4931580B2 (en) Top sheet for absorbent articles
JP4804337B2 (en) Top sheet for absorbent article and method for producing the same
JP5374345B2 (en) Sanitary napkin
JP4255440B2 (en) 3D sheet
KR101138114B1 (en) Topsheet for absorbent article
US6733610B2 (en) Method of making absorbent article employing surface layer with continuous filament
JP5052868B2 (en) Absorbent article and manufacturing method thereof
JP4518906B2 (en) Top sheet for absorbent articles
JP5309022B2 (en) Laminated body of sheet-like members
JP5374128B2 (en) Solid shaped sheet
JP5319512B2 (en) Manufacturing method of uneven nonwoven fabric
JP4989960B2 (en) Absorbent article and manufacturing method thereof
JP2002065743A (en) Continuous filament and absorptive article using absorption sheet
JP2007070790A (en) Nonwoven fabric and method for producing the same
JP2011208302A (en) Nonwoven fabric sheet and method for producing the same
JP3288920B2 (en) Method for producing liquid-permeable topsheet of body fluid-absorbing article
JP4204518B2 (en) Absorbent article surface sheet
JP4812614B2 (en) Absorbent articles
JP2008148819A (en) Absorbent article
JP5771518B2 (en) Non-woven
JP4368297B2 (en) 3D sheet
JP2019162218A (en) Production method of absorbent article
JP6289418B2 (en) Nonwoven fabric for absorbent articles
JP4467405B2 (en) Sanitary napkin
JP3998655B2 (en) Absorbent article surface sheet

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20091014

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20110615

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20110621

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20110809

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20120214

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20120214

R151 Written notification of patent or utility model registration

Ref document number: 4931580

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R151

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20150224

Year of fee payment: 3

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250