JP2017140423A - Absorbent article - Google Patents

Absorbent article Download PDF

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JP2017140423A
JP2017140423A JP2017066752A JP2017066752A JP2017140423A JP 2017140423 A JP2017140423 A JP 2017140423A JP 2017066752 A JP2017066752 A JP 2017066752A JP 2017066752 A JP2017066752 A JP 2017066752A JP 2017140423 A JP2017140423 A JP 2017140423A
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dimensional gather
shape
frill
absorbent article
napkin
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JP6273391B2 (en
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涼子 栗原
Ryoko Kurihara
涼子 栗原
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Daio Paper Corp
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Abstract

PROBLEM TO BE SOLVED: To provide an absorbent article, even when leg perimeters of a wearer are rubbed by outlines in both sides of the absorbent article and free ends of three-dimensional gathers, being unlikely to cause skin trouble due to the rubbing.SOLUTION: Outlines in longitudinally both sides of a sanitary napkin 1 are formed into a wavy frill shape, and free ends of three-dimensional gathers BS are also formed into a wavy frill shape. The outlines in longitudinally both ends and the free ends of the three-dimensional gathers BS of the sanitary napkin 1 are formed into the wavy frill shape respectively. The three-dimensional gather BS has at least one elastic stretchable member 8 along the longitudinal direction of the sanitary napkin 1, and the elastic stretchable member 8 is disposed not to be overlapped with the frill shape of the three-dimensional gather BS.SELECTED DRAWING: Figure 1

Description

本発明は、経血やおりものなどを吸収するための生理用ナプキン、パンティライナー、失禁パッド等の吸収性物品に係り、詳しくは前記吸収性物品の両側部に立体ギャザーを備えた吸収性物品に関する。   The present invention relates to absorbent articles such as sanitary napkins, panty liners, incontinence pads, etc. for absorbing menstrual blood, cages, and the like, and more specifically, absorbent articles having three-dimensional gathers on both sides of the absorbent article. About.

従来より、パンティライナー、生理用ナプキン、失禁パッドなどの吸収性物品として、ポリエチレンシートまたはポリエチレンシートラミネート不織布などの不透液性裏面シートと、不織布又は透液性プラスチックシートなどの透液性表面シートとの間に粉砕パルプ等の紙綿からなる吸収体を介在したものが知られている。   Conventionally, as absorbent articles such as panty liners, sanitary napkins, incontinence pads, liquid-impervious back sheets such as polyethylene sheets or polyethylene sheet-laminated nonwoven fabrics, and liquid-permeable surface sheets such as nonwoven fabrics or liquid-permeable plastic sheets In this case, an absorbent body made of paper cotton such as pulverized pulp is interposed therebetween.

この種の吸収性物品にも幾多の改良が重ねられ、装着時に吸収性物品の長手方向両側の外形線や立体ギャザーの自由端が脚の付け根に接触することによって股間部に感じる痛みや違和感を低減するための手段が種々講じられている。例えば、下記特許文献１では、透液性トップシート及び不透液性バックシートは両側縁が吸収性物品の長手方向に沿う方形状を成し、前記両側縁よりも外方に突出して吸収性物品の長手方向両側部に沿って外形線が凸曲線および凹曲線の繰り返しによって波状線をなす不織布からなるフリルが形成された吸収性物品が開示されている。   Numerous improvements have been made to this type of absorbent article, and when worn, the contours on both sides in the longitudinal direction of the absorbent article and the free end of the three-dimensional gather contact the base of the leg, causing pain and discomfort to the crotch. Various measures are taken to reduce this. For example, in the following Patent Document 1, the liquid-permeable top sheet and the liquid-impervious back sheet are formed in a shape in which both side edges follow the longitudinal direction of the absorbent article, and protrude outward from the both side edges. There is disclosed an absorbent article in which a frill made of a nonwoven fabric in which an outer line forms a wavy line by repeating a convex curve and a concave curve along both longitudinal sides of the article is disclosed.

また、下記特許文献２では、防漏側壁には防漏側壁の縦方向の両端側から縦方向の中間位置に向かうにしたがって自由端から基端側へ接近する収縮作用線を形成する弾性収縮手段が設けられている吸収性物品が開示されている。   Further, in Patent Document 2 below, elastic contraction means for forming a contraction action line that approaches the base end side from the free end toward the intermediate position in the vertical direction from both longitudinal ends of the leak preventive side wall in the leak preventive side wall An absorbent article is disclosed.

特許第４４９２９１３号公報Japanese Patent No. 4492913 特開２００１−２５２３０８号公報JP 2001-252308 A

上記特許文献１記載の吸収性物品では、吸収性物品の側部にフリルを形成することによって、製品端が脚の付け根に対して点状に接触するため、使用者の肌との間に摩擦が生じ難く、股間部の痛みや違和感が低減できるようになる。しかしながら、仮に立体ギャザーが形成された吸収性物品の場合には、側部の外形線がフリル形状を成していたとしても、立体ギャザーの自由端が長手方向に対して直線状に形成されるため脚の付け根に接触して肌との間の摩擦によって擦れ感が生じ、痛みや違和感を感じることが懸念される。   In the absorbent article described in Patent Document 1, by forming a frill on the side of the absorbent article, the product end comes into contact with the base of the leg in a point-like manner, and therefore friction between the skin of the user and the user. Is less likely to occur, and the groin pain and discomfort can be reduced. However, in the case of an absorbent article in which a three-dimensional gather is formed, the free end of the three-dimensional gather is formed in a straight line with respect to the longitudinal direction even if the outline of the side portion has a frill shape. Therefore, there is a concern that a feeling of rubbing may occur due to friction with the skin by contacting the base of the leg, and feeling pain or discomfort.

一方、上記特許文献２記載の吸収性物品は、立体ギャザーに配置される弾性部材を湾曲させることによって立体ギャザーが股間部の形状に追従しやすくなるというものであるが、立体ギャザーの自由端が長手方向に直線状に形成されているため、立体ギャザーの自由端が脚周りに擦れて、脚周りに痛みや擦れ感が生じ、肌トラブルの原因になると考えられる。また、吸収性物品の側部が長手方向に直線状に形成されているため、装着時に脚周りに擦れて摩擦による痛みや違和感などの肌トラブルの原因となっていた。   On the other hand, the absorbent article described in Patent Document 2 is such that a three-dimensional gather easily follows the shape of the crotch portion by curving an elastic member arranged in the three-dimensional gather. Since it is formed linearly in the longitudinal direction, the free end of the three-dimensional gather is rubbed around the legs, causing pain and rubbing around the legs, which may cause skin troubles. Moreover, since the side part of the absorbent article is linearly formed in the longitudinal direction, it rubs around the legs when worn and causes skin troubles such as pain and discomfort due to friction.

そこで本発明の主たる課題は、吸収性物品の両側の外形線及び立体ギャザーの自由端が脚周りに擦れて摩擦による肌トラブルを生じ難くした吸収性物品を提供することにある。   Accordingly, a main object of the present invention is to provide an absorbent article in which the outlines on both sides of the absorbent article and the free ends of the three-dimensional gathers are rubbed around the legs, and skin troubles due to friction are less likely to occur.

上記課題を解決するために請求項１に係る本発明として、透液性表面シートと裏面シートとの間に吸収体が介在されるとともに、肌側の長手方向両側部にそれぞれ長手方向に沿って立体ギャザーが形成された吸収性物品において、
前記吸収性物品の長手方向両側の外形線が波状を成すフリル状に形成されるとともに、前記立体ギャザーの自由端が波状を成すフリル状に形成されていることを特徴とする吸収性物品が提供される。 In order to solve the above-mentioned problem, as the present invention according to claim 1, an absorbent body is interposed between the liquid-permeable top sheet and the back sheet, and the longitudinal sides of the skin side are respectively along the longitudinal direction. In the absorbent article in which a three-dimensional gather is formed,
Provided is an absorbent article characterized in that outlines on both sides in the longitudinal direction of the absorbent article are formed in a wavy frill shape, and a free end of the three-dimensional gather is formed in a wavy frill shape. Is done.

上記請求項１記載の発明では、装着時に脚周りに擦れやすい吸収性物品の長手方向両側の外形線及び立体ギャザーの自由端の両方がそれぞれ、波状を成すフリル状に形成されているため、それぞれが装着時に着用者の脚周りに対して点状に接触するようになるため、着用者の肌との間の摩擦による擦れ感が緩和され、痛みや違和感などの肌トラブルが生じ難くなる。   In the first aspect of the present invention, since both the outlines on both sides in the longitudinal direction of the absorbent article and the free ends of the three-dimensional gathers, which are easily rubbed around the legs when worn, are each formed into a wavy frill shape, Since it comes into contact with the circumference of the wearer's legs in a point-like manner when worn, the rub feeling caused by friction with the wearer's skin is alleviated, and skin troubles such as pain and discomfort are less likely to occur.

請求項２に係る本発明として、前記立体ギャザーは、吸収性物品の長手方向に沿って少なくとも１本の弾性伸縮部材を有し、
前記弾性伸縮部材は、前記立体ギャザーのフリル形状に重ならないように配設されている請求項１記載の吸収性物品が提供される。 As the present invention according to claim 2, the three-dimensional gather has at least one elastic elastic member along the longitudinal direction of the absorbent article,
The absorbent article according to claim 1, wherein the elastic elastic member is disposed so as not to overlap the frill shape of the three-dimensional gather.

上記請求項２記載の発明では、弾性伸縮部材を立体ギャザーのフリル形状に重ならないように配設することによって、弾性伸縮部材が直接肌に接触することがなくなり、確実に立体ギャザー自由端の肌当たりを柔らかくすることができる。   In the invention according to claim 2, by disposing the elastic elastic member so as not to overlap the frill shape of the three-dimensional gather, the elastic elastic member is not directly in contact with the skin, and the skin of the three-dimensional gather free end is surely obtained. The hit can be softened.

請求項３に係る本発明として、前記外形線のフリル形状と立体ギャザーのフリル形状とは、同一の波状に形成されるか、位相、振幅及び／又は波長が異なる波状に形成されている請求項１、２いずれかに記載の吸収性物品が提供される。 As a third aspect of the present invention, the frill shape of the outline and the frill shape of the three-dimensional gather are formed in the same wave shape, or formed in a wave shape having different phases, amplitudes and / or wavelengths. An absorbent article according to any one of 1 and 2 is provided.

上記請求項３記載の発明では、外形線のフリル形状と立体ギャザーのフリル形状とを同一の波状に形成してあるため、外向きの立体ギャザーとした場合には、ギャザーシートを貼り合わせた後に、製品外形カッターで製品外形線とギャザーシートとを同時に裁断することによって、製品外形線のフリル形状と立体ギャザーのフリル形状を１つの裁断工程で同時に設けることができるようになる。また、位相、振幅及び／又は波長が異なる波状に形成した場合には、後段で詳述するように、各波状線の凸曲線が肌に接触して漏れを補うように作用するなどの利点がある。 In the invention according to claim 3 , since the frill shape of the outline and the frill shape of the three-dimensional gather are formed in the same wave shape, in the case of an outward three-dimensional gather, after bonding the gather sheets By cutting the product outline and the gather sheet simultaneously with the product outline cutter, the frill shape of the product outline and the frill shape of the three-dimensional gather can be provided simultaneously in one cutting process. In addition, when it is formed in a wave shape having different phases, amplitudes and / or wavelengths, there is an advantage that the convex curve of each wavy line works to make up for leakage by contacting the skin as described in detail later. is there.

以上詳説のとおり本発明によれば、吸収性物品の両側の外形線及び立体ギャザーの自由端が脚周りに擦れて摩擦による肌トラブルが生じ難くなる。   As described in detail above, according to the present invention, the external lines on both sides of the absorbent article and the free ends of the three-dimensional gathers are rubbed around the legs, and skin troubles due to friction are less likely to occur.

本発明に係る生理用ナプキン１の一部破断展開図である。It is a partial fracture development view of sanitary napkin 1 concerning the present invention. (A)〜(C)はそれぞれ、図１のIIA−IIA線矢視図、IIB−IIB線矢視図、IIC−IIC線矢視図である。(A)-(C) is respectively the IIA-IIA arrow directional view of FIG. 1, the IIB-IIB arrow directional view, and the IIC-IIC arrow directional view. (A)は生理用ナプキン１の展開図、(B)は立体ギャザーＢＳ起立時のB−B線矢視図である。(A) is a development view of the sanitary napkin 1, and (B) is a view taken along the line B-B when the three-dimensional gather BS stands. 生理用ナプキン１の展開図である。1 is a development view of a sanitary napkin 1. FIG. 生理用ナプキン１の展開図である。1 is a development view of a sanitary napkin 1. FIG. 生理用ナプキン１の(A)は展開図、(B)はそのB−B線矢視図である。(A) of the sanitary napkin 1 is a developed view, and (B) is a BB line arrow view. 他の形態例に係る生理用ナプキン１を示す、(A)は展開図、(B)はそのB−B線矢視図である。The sanitary napkin 1 which concerns on another form example is shown, (A) is an expanded view, (B) is the BB line arrow directional view. 他の形態例に係る生理用ナプキン１を示す、(A)は展開図、(B)はそのB−B線矢視図である。The sanitary napkin 1 which concerns on another form example is shown, (A) is an expanded view, (B) is the BB line arrow directional view.

以下、本発明の実施の形態について図面を参照しながら詳述する。   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

本発明に係る生理用ナプキン１は、図１及び図２に示されるように、ポリエチレンシート、ポリプロピレンシートなどからなる不透液性裏面シート２と、経血やおりものなどを速やかに透過させる透液性表面シート３と、これら両シート２，３間に介在された綿状パルプまたは合成パルプなどからなる吸収体４と、前記吸収体４の形状保持および拡散性向上のために前記吸収体４を囲繞するクレープ紙５と、表面両側部にそれぞれ長手方向に沿って配設されたサイド不織布７，７によって少なくとも体液排出部を含むように前後方向に所定の区間内において表面側に突出して設けられた左右一対の立体ギャザーＢＳ、ＢＳとから主に構成されている。前記吸収体４の周囲において、そのナプキン長手方向の前後端縁部では、前記不透液性裏面シート２と透液性表面シート３との外縁部がホットメルトなどの接着剤やヒートシール等の接着手段によって接合され、またその両側縁部では吸収体４の端縁よりも側方に延出している前記不透液性裏面シート２と前記サイド不織布７とがホットメルトなどの接着剤やヒートシール等の接着手段によって接合され、外周に吸収体４の存在しない外周フラップ部が形成されている。   As shown in FIGS. 1 and 2, the sanitary napkin 1 according to the present invention has a liquid-impervious back sheet 2 made of a polyethylene sheet, a polypropylene sheet, or the like, and a permeate that quickly permeates menstrual blood or a cage. A liquid surface sheet 3, an absorbent body 4 made of cotton-like pulp or synthetic pulp interposed between the two sheets 2, 3, and the absorbent body 4 for maintaining the shape of the absorbent body 4 and improving diffusibility. The crepe paper 5 that surrounds and the side nonwoven fabrics 7 and 7 disposed along the longitudinal direction on both sides of the surface are provided so as to protrude at the surface side in a predetermined section in the front-rear direction so as to include at least a body fluid discharge portion. It is mainly composed of a pair of left and right three-dimensional gathers BS and BS. Around the absorbent body 4, at the front and rear edge portions in the napkin longitudinal direction, the outer edge portion of the liquid-impermeable back sheet 2 and the liquid-permeable surface sheet 3 is formed of an adhesive such as hot melt, heat seal, or the like. The liquid-impervious back sheet 2 and the side nonwoven fabric 7 which are joined by an adhesive means and extend laterally from the edge of the absorbent body 4 at both side edges thereof are adhesives such as hot melt or heat. The outer periphery flap part in which the absorber 4 does not exist is formed on the outer periphery by being bonded by an adhesive means such as a seal.

以下、さらに前記生理用ナプキン１の構造について詳述すると、
前記不透液性裏面シート２は、ポリエチレンやポリプロピレン等のオレフィン系樹脂シートなどの少なくとも遮水性を有するシート材が用いられるが、この他にポリエチレンシート等に不織布を積層したラミネート不織布や、さらには防水フィルムを介在して実質的に不透液性を確保した上で不織布シート（この場合には防水フィルムと不織布とで不透液性裏面シートを構成する。）などを用いることができる。近年はムレ防止の観点から透湿性を有するものが用いられる傾向にある。この遮水・透湿性シート材は、ポリエチレンやポリプロピレン等のオレフィン系樹脂中に無機充填剤を溶融混練してシートを成形した後、一軸または二軸方向に延伸することにより得られる微多孔性シートである。 Hereinafter, the structure of the sanitary napkin 1 will be described in detail.
As the liquid-impermeable back sheet 2, a sheet material having at least water shielding properties such as an olefin resin sheet such as polyethylene or polypropylene is used. In addition, a laminated nonwoven fabric obtained by laminating a nonwoven fabric on a polyethylene sheet or the like, or A nonwoven fabric sheet (in this case, the waterproof film and the nonwoven fabric constitute a liquid-impervious back sheet) can be used after substantially impervious to liquid imperviousness by interposing a waterproof film. In recent years, those having moisture permeability tend to be used from the viewpoint of preventing stuffiness. This water- and moisture-permeable sheet material is a microporous sheet obtained by forming a sheet by melting and kneading an inorganic filler in an olefin resin such as polyethylene or polypropylene, and then stretching in a uniaxial or biaxial direction. It is.

次いで、前記透液性表面シート３は、有孔または無孔の不織布や多孔性プラスチックシートなどが好適に用いられる。不織布を構成する素材繊維としては、たとえばポリエチレンまたはポリプロピレン等のオレフィン系、ポリエステル系、ポリアミド系等の合成繊維の他、レーヨンやキュプラ等の再生繊維、綿等の天然繊維とすることができ、スパンレース法、スパンボンド法、サーマルボンド法、メルトブローン法、ニードルパンチ法等の適宜の加工法によって得られた不織布を用いることができる。これらの加工法の内、スパンレース法は柔軟性、スパンボンド法はドレープ性に富む点で優れ、サーマルボンド法及びエアスルー法は嵩高でソフトである点で優れている。   Next, as the liquid-permeable surface sheet 3, a porous or non-porous nonwoven fabric or a porous plastic sheet is preferably used. Examples of the material fibers constituting the nonwoven fabric include synthetic fibers such as polyethylene or polypropylene, synthetic fibers such as polyester and polyamide, recycled fibers such as rayon and cupra, and natural fibers such as cotton. A nonwoven fabric obtained by an appropriate processing method such as a lace method, a spun bond method, a thermal bond method, a melt blown method, or a needle punch method can be used. Of these processing methods, the spunlace method is excellent in terms of flexibility and the spunbond method is excellent in drapeability, and the thermal bond method and the air-through method are excellent in terms of being bulky and soft.

これら不透液性裏面シート２と透液性表面シート３との間に介在される吸収体４は、たとえばパルプ中に高吸水性樹脂を混入したもの、或いはパルプ中に化学繊維を混入させるとともに、高吸水性ポリマーを混入したものが使用される。前記吸収体４は、形状保持、および経血等を速やかに拡散させるとともに、一旦吸収した経血等の逆戻りを防止するためにクレープ紙５によって囲繞することが好ましいが、無くても構わない。   The absorbent body 4 interposed between the liquid-impervious back sheet 2 and the liquid-permeable top sheet 3 is, for example, a mixture of a superabsorbent resin in pulp or a mixture of chemical fibers in the pulp. A high water-absorbing polymer is used. The absorbent body 4 is preferably surrounded by the crepe paper 5 in order to maintain the shape, rapidly diffuse menstrual blood, and prevent reversal of once absorbed menstrual blood, but may be omitted.

前記パルプとしては、木材から得られる化学パルプ、溶融パルプ等のセルロース繊維や、レーヨン、アセテート等の人工セルロース繊維からなるものが挙げられ、広葉樹パルプよりは繊維長の長い針葉樹パルプの方が機能および価格の面で好適に使用される。薄型生理用ナプキンとする場合には、前記吸収体４として、エアレイド法により作製されたものが用いられる。また、前記高吸水性ポリマーとしては、高吸水ポリマー粒状粉（ＳＡＰ）や高吸水ポリマー繊維（ＳＡＦ）を用いることができる。   Examples of the pulp include chemical fibers obtained from wood, cellulose fibers such as molten pulp, and those made of artificial cellulose fibers such as rayon and acetate. It is preferably used in terms of price. In the case of a thin sanitary napkin, the absorbent body 4 manufactured by the airlaid method is used. Further, as the superabsorbent polymer, superabsorbent polymer granular powder (SAP) or superabsorbent polymer fiber (SAF) can be used.

一方、本生理用ナプキン１の表面側両側部にはそれぞれ、長手方向に沿ってかつナプキン１のほぼ全長に亘ってサイド不織布７，７が設けられている。このサイド不織布７，７が側方に延在されるとともに、同じく側方に延在された不透液性裏面シート２とによって側方フラップ部が形成されている。   On the other hand, side nonwoven fabrics 7 and 7 are provided on both sides of the sanitary napkin 1 on the surface side, respectively, along the longitudinal direction and over almost the entire length of the napkin 1. While these side nonwoven fabrics 7 and 7 are extended to the side, the side flap part is formed with the liquid-impermeable back sheet 2 also extended to the side.

前記サイド不織布７としては、重要視する機能の点から撥水処理不織布または親水処理不織布を使用することができる。たとえば、体液が浸透するのを防止する、あるいは肌触り感を高めるなどの機能を重視するならば、シリコン系、パラフィン系、アルキルクロミッククロリド系撥水剤などをコーティングした撥水処理不織布を用いることが望ましい。また、前記サイド不織布７における体液の吸収性を重視するならば、合成繊維の製造過程で親水基を持つ化合物、例えばポリエチレングリコールの酸化生成物などを共存させて重合させる方法や、塩化第２スズのような金属塩で処理し、表面を部分溶解し多孔性とし金属の水酸化物を沈着させる方法等により合成繊維を膨潤または多孔性とし、毛細管現象を応用して親水性を与えた親水処理不織布を用いるようにすることが望ましい。   As the side nonwoven fabric 7, a water-repellent treated nonwoven fabric or a hydrophilic treated nonwoven fabric can be used from the viewpoint of an important function. For example, if importance is placed on functions such as preventing the penetration of bodily fluids or enhancing the feeling of touch, it is necessary to use a water-repellent non-woven fabric coated with a silicon-based, paraffin-based, or alkylchromic chloride-based water repellent. desirable. Further, if importance is attached to the absorbability of body fluid in the side nonwoven fabric 7, a method of polymerizing a compound having a hydrophilic group, for example, an oxidation product of polyethylene glycol, in the process of producing a synthetic fiber, or stannic chloride Treatment with a metal salt, such as by partially dissolving the surface to make it porous and depositing metal hydroxide, etc. It is desirable to use a nonwoven fabric.

前記サイド不織布７は、図２に示されるように、幅方向中間部より外側部分を吸収体４の内側位置から吸収体側縁を若干越えて不透液性裏面シート２の外縁までの範囲に亘ってホットメルトなどの接着剤によって接着されている。一方、サイド不織布７の内方側部分は幅方向外側に折り返されるとともに、少なくとも折り返し先端部が二重シートによって構成され、この二重シート内部に、両端または長手方向の適宜の位置が固定された少なくとも１本の、図示例では１本の糸状弾性伸縮部材８が配設されている。図２(A)に示されるように、この幅方向外側に折り返された部分は、ナプキン長手方向の前後端部では下層側に接着されている。その他の前記糸状弾性伸縮部材８が配設されたナプキン長手方向の中間部では、図２(B)、(C)に示されるように、前記糸状弾性伸縮部材８の収縮作用によって表面側に起立する立体ギャザーＢＳ、ＢＳが形成されている。   As shown in FIG. 2, the side nonwoven fabric 7 has a portion outside the intermediate portion in the width direction ranging from the inner position of the absorbent body 4 to slightly beyond the absorbent side edge to the outer edge of the liquid-impermeable back sheet 2. It is bonded with an adhesive such as hot melt. On the other hand, the inner side portion of the side nonwoven fabric 7 is folded outward in the width direction, and at least the folded tip is constituted by a double sheet, and appropriate positions in both ends or in the longitudinal direction are fixed inside the double sheet. At least one thread elastic elastic member 8 in the illustrated example is disposed. As shown in FIG. 2 (A), the portion folded back outward in the width direction is bonded to the lower layer side at the front and rear ends in the napkin longitudinal direction. In the intermediate part in the longitudinal direction of the napkin where the other thread-like elastic elastic members 8 are arranged, as shown in FIGS. 2B and 2C, the thread-like elastic elastic members 8 stand up on the surface side due to the contraction action. The three-dimensional gather BS and BS to be formed are formed.

前記生理用ナプキン１の長手方向両側の外形線は、少なくとも長手方向中央部であって装着時に着用者の脚の付け根に接触する部分が、凸曲線と凹曲線が交互に繰り返し配置されることによって波状線を成すフリル状に形成されている。換言すると、生理用ナプキン１の幅が長手方向に沿って幅広部と幅狭部が交互に繰り返し形成されるフリル状に形成されている。また、立体ギャザーＢＳの自由端は、少なくとも長手方向中央部であって装着時に着用者の脚の付け根に接触する部分が、凸曲線と凹曲線が交互に繰り返し配置されることによって波状線を成すフリル状に形成されている。換言すると、立体ギャザーＢＳの基端部からの起立高さがナプキン長手方向に沿って高い部分と低い部分が交互に繰り返し形成されるフリル状に形成されている。   The contour lines on both sides in the longitudinal direction of the sanitary napkin 1 are at least a central portion in the longitudinal direction, and a portion that comes into contact with the root of the wearer's leg at the time of wearing is alternately arranged with a convex curve and a concave curve. It is formed in a frill shape forming a wavy line. In other words, the sanitary napkin 1 is formed in a frill shape in which a wide portion and a narrow portion are alternately and repeatedly formed along the longitudinal direction. In addition, the free end of the three-dimensional gather BS is at least a central portion in the longitudinal direction, and a portion that comes into contact with the base of the wearer's leg at the time of wearing forms a wavy line by alternately arranging convex curves and concave curves. It is formed in a frill shape. In other words, the standing height from the base end of the three-dimensional gather BS is formed in a frill shape in which high and low portions are alternately and repeatedly formed along the napkin longitudinal direction.

このように、ナプキン両側の外形線及び立体ギャザーＢＳの自由端をそれぞれフリル状に形成することによって、ナプキン外形線及びギャザー自由端が装着時に着用者の脚周りに対して点状に接触するため、着用者の肌との間の摩擦による擦れが緩和され、痛みや違和感などの肌トラブルを生じ難くすることができるようになる。   In this way, by forming the contour lines on both sides of the napkin and the free ends of the three-dimensional gather BS in a frilled shape, the napkin contour lines and the gather free ends come into contact with the circumference of the wearer's legs in a point-like manner when worn. Rub due to friction with the wearer's skin is relieved, and skin troubles such as pain and discomfort can be made difficult to occur.

図１に示される生理用ナプキン１では、展開状態で、生理用ナプキン１の長手方向両側の外形線と立体ギャザーＢＳの自由端の外形線がほぼ一致するように、立体ギャザーＢＳを構成する幅方向外側に折り返した部分の端部がナプキン外縁まで延在して配設されている。これによって、後段で詳述するようにナプキン外形線の裁断と立体ギャザーＢＳの裁断が同時にでき、製造工程が簡略化できるようになる。   In the sanitary napkin 1 shown in FIG. 1, the width constituting the three-dimensional gather BS so that the outlines on both sides in the longitudinal direction of the sanitary napkin 1 substantially coincide with the outline of the free end of the three-dimensional gather BS in the unfolded state. The end of the portion turned back outward in the direction extends to the outer edge of the napkin. This makes it possible to simultaneously cut the napkin outline and the three-dimensional gather BS, as will be described in detail later, and to simplify the manufacturing process.

また、前記立体ギャザーＢＳに配設される糸状弾性伸縮部材８は、図１に示されるように、立体ギャザーＢＳのフリル形状に重ならないように配設することが望ましい。すなわち、前記糸状弾性伸縮部材８は、立体ギャザーＢＳの自由端との間にナプキン幅方向に所定の離間幅を有しながら前記自由端より内側に配設されている。前記糸状弾性伸縮部材８と立体ギャザーＢＳの自由端との離間幅Ｓは、最も小さくなる凹曲線の頂部において、少なくとも１．５ｍｍ程度とすることが望ましい。糸状弾性伸縮部材８がフリル形状に重なったり、離間幅Ｓが小さすぎると、糸状弾性伸縮部材８が肌に接触して擦れやすくなり、肌トラブルの原因となる。   Moreover, as shown in FIG. 1, it is desirable that the thread-like elastic elastic members 8 provided in the three-dimensional gather BS are arranged so as not to overlap the frill shape of the three-dimensional gather BS. That is, the thread-like elastic elastic member 8 is disposed on the inner side of the free end while having a predetermined separation width in the napkin width direction between the free end of the three-dimensional gather BS. The separation width S between the elastic elastic member 8 and the free end of the three-dimensional gather BS is preferably about 1.5 mm at the top of the concave curve that is the smallest. If the thread-like elastic elastic member 8 overlaps the frill shape, or if the separation width S is too small, the thread-like elastic elastic member 8 comes into contact with the skin and rubs easily, causing skin troubles.

図１に示される例では、糸状弾性伸縮部材８は、ナプキン長手方向に沿って直線状に配設されているが、図３に示されるように、立体ギャザーＢＳのフリル形状に沿って波状に配設することも可能である。このような波状に配設した場合には、立体ギャザーＢＳの起立時に、糸状弾性伸縮部材８が収縮して直線状に変形する結果、立体ギャザーＢＳの波状線のうち外側に突出する凸曲線の部分が、長手方向に収縮するとともに幅方向内側に引き寄せられるように変形するので、図３(B)に示されるように、糸状弾性伸縮部材８より自由端側部分が立体ギャザーＢＳの起立面に対して外側にめくれ返ったように変形する。このため、立体ギャザーＢＳの自由端の肌当たりがより一層柔軟になる。   In the example shown in FIG. 1, the thread-like elastic elastic members 8 are arranged linearly along the napkin longitudinal direction, but as shown in FIG. 3, they are waved along the frill shape of the three-dimensional gather BS. It is also possible to arrange. When arranged in such a wavy shape, the elastic elastic elastic member 8 contracts and deforms into a linear shape when the three-dimensional gather BS stands up. As a result, the convex curve projecting outward from the wavy line of the three-dimensional gather BS. Since the portion contracts in the longitudinal direction and is deformed so as to be drawn inward in the width direction, the free end side portion from the thread-like elastic elastic member 8 becomes an upright surface of the three-dimensional gather BS as shown in FIG. On the other hand, it deforms as if it is turned over to the outside. For this reason, the contact of the free end of the three-dimensional gather BS becomes more flexible.

図１に示される例では、ナプキン外形線と立体ギャザーＢＳの自由端がほぼ一致する波状に形成されているが、図４及び図５に示されるように、両者の波状線の位相、振幅及び／又は波長が異なるように形成することも可能である。図４に示される例では、ナプキン外形線の波状線と立体ギャザーＢＳの自由端の波状線は、振幅及び波長がほぼ同等で、位相が２分の１周期分ずれた状態で、フリル形状の凸曲線の頂点を結ぶ線がほぼ同一の線上に位置するように形成されている。これによって、一方の波状線の内側に凸となる凹曲線部分に、他方の波状線の外側に凸となる凸曲線が位置するようになる。従って、一方の波状線の凹曲線は、吸収体４の側縁との距離や立体ギャザーＢＳの起立高さが短いため、肌との間に隙間が生じやすく漏れが発生しやすい部分であるが、この凹曲線に他方の波状線の凸曲線が重なって配置してあるため、この凸曲線が肌に接触して漏れを補うように作用する。   In the example shown in FIG. 1, the napkin outline and the free end of the three-dimensional gather BS are formed in a wavy shape, but as shown in FIGS. 4 and 5, the phase, amplitude, and It is also possible to form them with different wavelengths. In the example shown in FIG. 4, the wavy line of the napkin outline and the wavy line of the free end of the three-dimensional gather BS are substantially the same in amplitude and wavelength, and in a state where the phase is shifted by a half cycle, The lines connecting the vertices of the convex curves are formed so as to be located on substantially the same line. As a result, a convex curve that is convex outside the other wavy line is positioned in the concave curve portion that is convex inside the one wavy line. Accordingly, the concave curve of one wavy line is a portion where the gap between the skin 4 and the skin is likely to occur because the distance from the side edge of the absorber 4 and the standing height of the three-dimensional gather BS are short. Since the convex curve of the other wavy line overlaps with this concave curve, this convex curve acts to make contact with the skin and compensate for leakage.

また、図５に示される例は、両フリル形状の波状線の波長（隣接する凸曲線同士の間隔）を異ならせたものである。ナプキン外形線の波長Ｌ１及び立体ギャザーＢＳ自由端の波長Ｌ２はともに、細かくした方が肌に接触する部分が点に近づくため、より肌当たりが良くなるが、あまり細かくしすぎると波状にした効果が失われてしまう。従って、前記波長Ｌ１、Ｌ２はそれぞれ、５〜３０ｍｍ、好ましくは１５〜２５ｍｍとするのがよい。   In the example shown in FIG. 5, the wavelengths of the two frill-shaped wavy lines (intervals between adjacent convex curves) are made different. Both the wavelength L1 of the napkin outline and the wavelength L2 of the free end of the three-dimensional gather BS are closer to the point because the part that contacts the skin is closer to the point, but the effect of making it wavy if it is too fine Will be lost. Therefore, the wavelengths L1 and L2 are 5 to 30 mm, preferably 15 to 25 mm, respectively.

また図示しないが、両波状線の振幅が異なるように形成してもよい。例えば、ナプキン外形線は脚の付け根に接触して立体ギャザーＢＳより脚圧を大きく受けやすいので、立体ギャザーＢＳのフリル形状の振幅より大きくして波状の凸曲線を潰れにくくすることができる。   Although not shown, they may be formed so that the amplitudes of both wavy lines are different. For example, the napkin outline is in contact with the base of the leg and is more likely to receive a leg pressure than the three-dimensional gather BS, so that it can be made larger than the frill-shaped amplitude of the three-dimensional gather BS to make the wavy convex curve difficult to collapse.

また、図６に示されるように、ナプキン本体両側のフラップ部であって不透液性裏面シート２とサイド不織布７との間に、ナプキン長手方向に沿って少なくとも１本の糸状弾性伸縮部材９を配設することにより、ナプキン本体の両側にギャザーを形成してもよい。これによって、ナプキン表面側の両側部には、前記立体ギャザーＢＳの外側に更にギャザーが設けられた二重ギャザーが形成されるようになり、脚の付け根に対する密着度を高めることができるようになる。   Further, as shown in FIG. 6, at least one thread-like elastic elastic member 9 which is a flap portion on both sides of the napkin body and between the liquid-impermeable back sheet 2 and the side nonwoven fabric 7 along the longitudinal direction of the napkin. By gathering, gathers may be formed on both sides of the napkin body. As a result, double gathers in which gathers are further provided outside the solid gather BS are formed on both sides of the napkin surface side, and the degree of adhesion to the base of the legs can be increased. .

前記立体ギャザーＢＳは、糸状弾性伸縮部材８より自由端側の二重不織布７、７間を非接着としてヒラヒラさせておいてもよい。これによって、ギャザー先端部の肌当たりをより一層柔らかくでき、擦れ感が更に低減できる。   In the three-dimensional gather BS, the double nonwoven fabrics 7 and 7 on the free end side from the thread-like elastic elastic member 8 may be flickered as non-bonded. As a result, the skin contact at the gather tip can be further softened, and the feeling of rubbing can be further reduced.

本生理用ナプキン１の製造に当たっては、ナプキン外形のフリル形状と立体ギャザーＢＳのフリル形状を一致させる場合には、サイド不織布７を適宜折り畳み、透液性表面シート３とサイド不織布７とを貼り合わせ、吸収体４の表面側に貼り合わせる。その後、これらの積層体を不透液性裏面シート２の上面に貼り合わせた状態で、製品カッターでサイド不織布７の折り返し端部とともに不透液性裏面シート２を裁断することによって、ナプキン外形線のフリル形状と立体ギャザーＢＳ自由端のフリル形状とを同時に形成することができる。   In manufacturing the sanitary napkin 1, when the frill shape of the napkin and the frill shape of the three-dimensional gather BS are matched, the side nonwoven fabric 7 is appropriately folded, and the liquid-permeable surface sheet 3 and the side nonwoven fabric 7 are bonded together. Then, it is bonded to the surface side of the absorber 4. Then, in a state where these laminates are bonded to the upper surface of the liquid-impervious back sheet 2, the liquid-impervious back sheet 2 is cut together with the folded end portion of the side nonwoven fabric 7 with a product cutter, thereby forming a napkin outline. And the ruffle shape of the free end of the three-dimensional gather BS can be formed at the same time.

一方、図４に示されるように、波状線の位相をずらした場合であって、立体ギャザーＢＳの自由端の少なくとも一部がナプキン外形線より外側に位置する場合には、ナプキン外形線のフリル形状と立体ギャザーＢＳのフリル形状とを別々に裁断する必要がある。この場合、不透液性裏面シート２の両側縁をフリル形状に裁断した後、ナプキン外形線に対応する側縁を前記不透液性裏面シート２と同じフリル形状に裁断するとともに、立体ギャザーＢＳの自由端に対応する側縁を所定のフリル形状に裁断したサイド不織布を、前記不透液性裏面シート２の波状線に位置合わせしながら積層して接着し、しかる後、ナプキン前後端を裁断することによって製造できる。   On the other hand, as shown in FIG. 4, when the phase of the wavy line is shifted and at least a part of the free end of the three-dimensional gather BS is located outside the napkin outline, It is necessary to cut the shape and the frill shape of the three-dimensional gather BS separately. In this case, both side edges of the liquid-impermeable back sheet 2 are cut into a frill shape, and then the side edges corresponding to the napkin outline are cut into the same frill shape as the liquid-impervious back sheet 2 and the three-dimensional gather BS A side nonwoven fabric cut into a predetermined frill shape at the side edge corresponding to the free end of the sheet is laminated and bonded while being aligned with the wavy line of the liquid-impervious backsheet 2, and then the front and rear ends of the napkin are cut. Can be manufactured.

また、図５に示される両フリル形状の波長を異ならせた場合や、振幅を異ならせた場合、立体ギャザーＢＳの自由端がナプキン外形線のフリル形状より外側にはみ出るものについては、上述の不透液性裏面シート２とサイド不織布７とをそれぞれ別々に波状線に裁断したものを位置合わせしながら積層して接着することによって製造できる。他方、立体ギャザーＢＳの自由端がナプキン外形線のフリル形状より内側に位置するものについては、サイド不織布７の立体ギャザーＢＳの自由端に対応する側縁のみをフリル形状にカットした後、不透液性裏面シート２に積層して接着した状態で、製品カッターで不透液性裏面シート２及びサイド不織布７をともにナプキン外形線に裁断することによって製造することができる。   Further, in the case where the wavelengths of the two frill shapes shown in FIG. 5 are made different or the amplitude is made different, the above-mentioned non-existence is applied to the case where the free end of the three-dimensional gather BS protrudes outside the frill shape of the napkin outline. The liquid-permeable back sheet 2 and the side nonwoven fabric 7 can be manufactured by laminating and bonding them together while aligning the cut pieces of wavy lines. On the other hand, in the case where the free end of the three-dimensional gather BS is located inside the frill shape of the napkin outline, only the side edge corresponding to the free end of the three-dimensional gather BS of the side nonwoven fabric 7 is cut into a frill shape, and then impervious. It can be manufactured by cutting both the liquid-impervious back sheet 2 and the side nonwoven fabric 7 into a napkin outline with a product cutter in a state of being laminated and adhered to the liquid back sheet 2.

ところで、ナプキン両側の外形線と立体ギャザーＢＳの自由端を同一のフリル形状で形成した場合、図１に示されるように両者のフリル形状が一致するように配置することが望ましいが、ナプキン外形線と立体ギャザーＢＳの自由端が幅方向に位置ズレするように配置してもよい。   By the way, when the outlines on both sides of the napkin and the free ends of the three-dimensional gather BS are formed in the same frill shape, it is desirable to arrange them so that both frill shapes coincide as shown in FIG. And the free end of the three-dimensional gather BS may be arranged so as to be displaced in the width direction.

〔他の形態例〕
(1)上記形態例では、立体ギャザーＢＳは、図２に示されるように、自由端が外側を向く外向きのギャザーの場合について説明したが、図７及び図８に示されるように、自由端が内側を向く内向きのギャザーについても同様に適用できる。
(2)上記形態例では、立体ギャザーＢＳは、生理用ナプキン１の側縁まで延在するサイド不織布７の内側部分によって形成していたが、前記サイド不織布７とは別の立体ギャザー用不織布によって立体ギャザーＢＳを形成し、生理用ナプキン１の表面側両側部に接合するようにしてもよい。 [Other examples]
(1) In the above embodiment, the case where the three-dimensional gather BS is an outward gather with the free end facing outward as shown in FIG. 2 has been described. However, as shown in FIGS. The same applies to an inward gather with the end facing inward.
(2) In the above embodiment, the three-dimensional gather BS is formed by the inner part of the side nonwoven fabric 7 extending to the side edge of the sanitary napkin 1, but the three-dimensional gather nonwoven fabric different from the side nonwoven fabric 7 is used. A three-dimensional gather BS may be formed and joined to both side portions on the surface side of the sanitary napkin 1.

１…生理用ナプキン、２…不透液性裏面シート、３…透液性表面シート、４…吸収体、７…サイド不織布、８・９…糸状弾性伸縮部材   DESCRIPTION OF SYMBOLS 1 ... Sanitary napkin, 2 ... Liquid impervious back sheet, 3 ... Liquid permeable top sheet, 4 ... Absorber, 7 ... Side nonwoven fabric, 8 * 9 ... String-like elastic elastic member

本発明は、経血やおりものなどを吸収するための生理用ナプキン、パンティライナー、失禁パッド等の吸収性物品に係り、詳しくは前記吸収性物品の両側部に立体ギャザーを備えた吸収性物品に関する。   The present invention relates to absorbent articles such as sanitary napkins, panty liners, incontinence pads, etc. for absorbing menstrual blood, cages, and the like, and more specifically, absorbent articles having three-dimensional gathers on both sides of the absorbent article. About.

従来より、パンティライナー、生理用ナプキン、失禁パッドなどの吸収性物品として、ポリエチレンシートまたはポリエチレンシートラミネート不織布などの不透液性裏面シートと、不織布又は透液性プラスチックシートなどの透液性表面シートとの間に粉砕パルプ等の紙綿からなる吸収体を介在したものが知られている。   Conventionally, as absorbent articles such as panty liners, sanitary napkins, incontinence pads, liquid-impervious back sheets such as polyethylene sheets or polyethylene sheet-laminated nonwoven fabrics, and liquid-permeable surface sheets such as nonwoven fabrics or liquid-permeable plastic sheets In this case, an absorbent body made of paper cotton such as pulverized pulp is interposed therebetween.

この種の吸収性物品にも幾多の改良が重ねられ、装着時に吸収性物品の長手方向両側の外形線や立体ギャザーの自由端が脚の付け根に接触することによって股間部に感じる痛みや違和感を低減するための手段が種々講じられている。例えば、下記特許文献１では、透液性トップシート及び不透液性バックシートは両側縁が吸収性物品の長手方向に沿う方形状を成し、前記両側縁よりも外方に突出して吸収性物品の長手方向両側部に沿って外形線が凸曲線および凹曲線の繰り返しによって波状線をなす不織布からなるフリルが形成された吸収性物品が開示されている。   Numerous improvements have been made to this type of absorbent article, and when worn, the contours on both sides in the longitudinal direction of the absorbent article and the free end of the three-dimensional gather contact the base of the leg, causing pain and discomfort to the crotch. Various measures are taken to reduce this. For example, in the following Patent Document 1, the liquid-permeable top sheet and the liquid-impervious back sheet are formed in a shape in which both side edges follow the longitudinal direction of the absorbent article, and protrude outward from the both side edges. There is disclosed an absorbent article in which a frill made of a nonwoven fabric in which an outer line forms a wavy line by repeating a convex curve and a concave curve along both longitudinal sides of the article is disclosed.

また、下記特許文献２では、防漏側壁には防漏側壁の縦方向の両端側から縦方向の中間位置に向かうにしたがって自由端から基端側へ接近する収縮作用線を形成する弾性収縮手段が設けられている吸収性物品が開示されている。   Further, in Patent Document 2 below, elastic contraction means for forming a contraction action line that approaches the base end side from the free end toward the intermediate position in the vertical direction from both longitudinal ends of the leak preventive side wall in the leak preventive side wall An absorbent article is disclosed.

特許第４４９２９１３号公報Japanese Patent No. 4492913 特開２００１−２５２３０８号公報JP 2001-252308 A

上記特許文献１記載の吸収性物品では、吸収性物品の側部にフリルを形成することによって、製品端が脚の付け根に対して点状に接触するため、使用者の肌との間に摩擦が生じ難く、股間部の痛みや違和感が低減できるようになる。しかしながら、仮に立体ギャザーが形成された吸収性物品の場合には、側部の外形線がフリル形状を成していたとしても、立体ギャザーの自由端が長手方向に対して直線状に形成されるため脚の付け根に接触して肌との間の摩擦によって擦れ感が生じ、痛みや違和感を感じることが懸念される。   In the absorbent article described in Patent Document 1, by forming a frill on the side of the absorbent article, the product end comes into contact with the base of the leg in a point-like manner, and therefore friction between the skin of the user and the user. Is less likely to occur, and the groin pain and discomfort can be reduced. However, in the case of an absorbent article in which a three-dimensional gather is formed, the free end of the three-dimensional gather is formed in a straight line with respect to the longitudinal direction even if the outline of the side portion has a frill shape. Therefore, there is a concern that a feeling of rubbing may occur due to friction with the skin by contacting the base of the leg, and feeling pain or discomfort.

一方、上記特許文献２記載の吸収性物品は、立体ギャザーに配置される弾性部材を湾曲させることによって立体ギャザーが股間部の形状に追従しやすくなるというものであるが、立体ギャザーの自由端が長手方向に直線状に形成されているため、立体ギャザーの自由端が脚周りに擦れて、脚周りに痛みや擦れ感が生じ、肌トラブルの原因になると考えられる。また、吸収性物品の側部が長手方向に直線状に形成されているため、装着時に脚周りに擦れて摩擦による痛みや違和感などの肌トラブルの原因となっていた。   On the other hand, the absorbent article described in Patent Document 2 is such that a three-dimensional gather easily follows the shape of the crotch portion by curving an elastic member arranged in the three-dimensional gather. Since it is formed linearly in the longitudinal direction, the free end of the three-dimensional gather is rubbed around the legs, causing pain and rubbing around the legs, which may cause skin troubles. Moreover, since the side part of the absorbent article is linearly formed in the longitudinal direction, it rubs around the legs when worn and causes skin troubles such as pain and discomfort due to friction.

そこで本発明の主たる課題は、吸収性物品の両側の外形線及び立体ギャザーの自由端が脚周りに擦れて摩擦による肌トラブルを生じ難くした吸収性物品を提供することにある。   Accordingly, a main object of the present invention is to provide an absorbent article in which the outlines on both sides of the absorbent article and the free ends of the three-dimensional gathers are rubbed around the legs, and skin troubles due to friction are less likely to occur.

上記課題を解決するために請求項１に係る本発明として、透液性表面シートと裏面シートとの間に吸収体が介在されるとともに、肌側の長手方向両側部にそれぞれ長手方向に沿って立体ギャザーが形成された吸収性物品において、
前記吸収性物品の長手方向両側の外形線が波状を成すフリル状に形成されるとともに、
前記立体ギャザーは、吸収性物品の長手方向に沿って少なくとも１本の弾性伸縮部材を有し、前記弾性伸縮部材と前記立体ギャザーの自由端との間の離隔幅が吸収性物品の長手方向に沿って大きな部分と小さな部分が交互に繰り返し形成されるように、前記立体ギャザーの自由端が波状を成すフリル状に形成されていることを特徴とする吸収性物品が提供される。 In order to solve the above-mentioned problem, as the present invention according to claim 1, an absorbent body is interposed between the liquid-permeable top sheet and the back sheet, and the longitudinal sides of the skin side are respectively along the longitudinal direction. In the absorbent article in which a three-dimensional gather is formed,
The outer shape of the absorbent article on both sides in the longitudinal direction is formed in a frill shape that is wavy,
The three-dimensional gather has at least one elastic elastic member along the longitudinal direction of the absorbent article, and the separation width between the elastic elastic member and the free end of the three-dimensional gather is in the longitudinal direction of the absorbent article. There is provided an absorbent article characterized in that the free end of the three-dimensional gather is formed in a wave-like frill shape so that a large portion and a small portion are alternately and repeatedly formed .

上記請求項１記載の発明では、装着時に脚周りに擦れやすい吸収性物品の長手方向両側の外形線及び立体ギャザーの自由端の両方がそれぞれ、波状を成すフリル状に形成されているため、それぞれが装着時に着用者の脚周りに対して点状に接触するようになるため、着用者の肌との間の摩擦による擦れ感が緩和され、痛みや違和感などの肌トラブルが生じ難くなる。   In the first aspect of the present invention, since both the outlines on both sides in the longitudinal direction of the absorbent article and the free ends of the three-dimensional gathers, which are easily rubbed around the legs when worn, are each formed into a wavy frill shape, Since it comes into contact with the circumference of the wearer's legs in a point-like manner when worn, the rub feeling caused by friction with the wearer's skin is alleviated, and skin troubles such as pain and discomfort are less likely to occur.

請求項２に係る本発明として、前記弾性伸縮部材は、前記立体ギャザーのフリル形状に重ならないように配設されている請求項１記載の吸収性物品が提供される。 As the present invention according to claim 2, before Symbol resilient and elastic members, the absorbent article according to claim 1, wherein are arranged so as not to overlap the ruffle shape of the three-dimensional gathers are provided.

上記請求項２記載の発明では、弾性伸縮部材を立体ギャザーのフリル形状に重ならないように配設することによって、弾性伸縮部材が直接肌に接触することがなくなり、確実に立体ギャザー自由端の肌当たりを柔らかくすることができる。   In the invention according to claim 2, by disposing the elastic elastic member so as not to overlap the frill shape of the three-dimensional gather, the elastic elastic member is not directly in contact with the skin, and the skin of the three-dimensional gather free end is surely obtained. The hit can be softened.

請求項３に係る本発明として、前記外形線のフリル形状と立体ギャザーのフリル形状とは、同一の波状に形成されるか、位相、振幅及び／又は波長が異なる波状に形成されている請求項１〜３いずれかに記載の吸収性物品が提供される。   As a third aspect of the present invention, the frill shape of the outline and the frill shape of the three-dimensional gather are formed in the same wave shape, or formed in a wave shape having different phases, amplitudes and / or wavelengths. The absorbent article in any one of 1-3 is provided.

上記請求項３記載の発明では、外形線のフリル形状と立体ギャザーのフリル形状とを同一の波状に形成してあるため、外向きの立体ギャザーとした場合には、ギャザーシートを貼り合わせた後に、製品外形カッターで製品外形線とギャザーシートとを同時に裁断することによって、製品外形線のフリル形状と立体ギャザーのフリル形状を１つの裁断工程で同時に設けることができるようになる。また、位相、振幅及び／又は波長が異なる波状に形成した場合には、後段で詳述するように、各波状線の凸曲線が肌に接触して漏れを補うように作用するなどの利点がある。   In the invention according to claim 3, since the frill shape of the outline and the frill shape of the three-dimensional gather are formed in the same wave shape, in the case of an outward three-dimensional gather, after bonding the gather sheets By cutting the product outline and the gather sheet simultaneously with the product outline cutter, the frill shape of the product outline and the frill shape of the three-dimensional gather can be provided simultaneously in one cutting process. In addition, when it is formed in a wave shape having different phases, amplitudes and / or wavelengths, there is an advantage that the convex curve of each wavy line works to make up for leakage by contacting the skin as described in detail later. is there.

以上詳説のとおり本発明によれば、吸収性物品の両側の外形線及び立体ギャザーの自由端が脚周りに擦れて摩擦による肌トラブルが生じ難くなる。   As described in detail above, according to the present invention, the external lines on both sides of the absorbent article and the free ends of the three-dimensional gathers are rubbed around the legs, and skin troubles due to friction are less likely to occur.

本発明に係る生理用ナプキン１の一部破断展開図である。It is a partial fracture development view of sanitary napkin 1 concerning the present invention. (A)〜(C)はそれぞれ、図１のIIA−IIA線矢視図、IIB−IIB線矢視図、IIC−IIC線矢視図である。(A)-(C) is respectively the IIA-IIA arrow directional view of FIG. 1, the IIB-IIB arrow directional view, and the IIC-IIC arrow directional view. (A)は生理用ナプキン１の展開図、(B)は立体ギャザーＢＳ起立時のB−B線矢視図である。(A) is a development view of the sanitary napkin 1, and (B) is a view taken along the line B-B when the three-dimensional gather BS stands. 生理用ナプキン１の展開図である。1 is a development view of a sanitary napkin 1. FIG. 生理用ナプキン１の展開図である。1 is a development view of a sanitary napkin 1. FIG. 生理用ナプキン１の(A)は展開図、(B)はそのB−B線矢視図である。(A) of the sanitary napkin 1 is a developed view, and (B) is a BB line arrow view. 他の形態例に係る生理用ナプキン１を示す、(A)は展開図、(B)はそのB−B線矢視図である。The sanitary napkin 1 which concerns on another form example is shown, (A) is an expanded view, (B) is the BB line arrow directional view. 他の形態例に係る生理用ナプキン１を示す、(A)は展開図、(B)はそのB−B線矢視図である。The sanitary napkin 1 which concerns on another form example is shown, (A) is an expanded view, (B) is the BB line arrow directional view.

以下、本発明の実施の形態について図面を参照しながら詳述する。   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

本発明に係る生理用ナプキン１は、図１及び図２に示されるように、ポリエチレンシート、ポリプロピレンシートなどからなる不透液性裏面シート２と、経血やおりものなどを速やかに透過させる透液性表面シート３と、これら両シート２，３間に介在された綿状パルプまたは合成パルプなどからなる吸収体４と、前記吸収体４の形状保持および拡散性向上のために前記吸収体４を囲繞するクレープ紙５と、表面両側部にそれぞれ長手方向に沿って配設されたサイド不織布７，７によって少なくとも体液排出部を含むように前後方向に所定の区間内において表面側に突出して設けられた左右一対の立体ギャザーＢＳ、ＢＳとから主に構成されている。前記吸収体４の周囲において、そのナプキン長手方向の前後端縁部では、前記不透液性裏面シート２と透液性表面シート３との外縁部がホットメルトなどの接着剤やヒートシール等の接着手段によって接合され、またその両側縁部では吸収体４の端縁よりも側方に延出している前記不透液性裏面シート２と前記サイド不織布７とがホットメルトなどの接着剤やヒートシール等の接着手段によって接合され、外周に吸収体４の存在しない外周フラップ部が形成されている。   As shown in FIGS. 1 and 2, the sanitary napkin 1 according to the present invention has a liquid-impervious back sheet 2 made of a polyethylene sheet, a polypropylene sheet, or the like, and a permeate that quickly permeates menstrual blood or a cage. A liquid surface sheet 3, an absorbent body 4 made of cotton-like pulp or synthetic pulp interposed between the two sheets 2, 3, and the absorbent body 4 for maintaining the shape of the absorbent body 4 and improving diffusibility. The crepe paper 5 that surrounds and the side nonwoven fabrics 7 and 7 disposed along the longitudinal direction on both sides of the surface are provided so as to protrude at the surface side in a predetermined section in the front-rear direction so as to include at least a body fluid discharge portion. It is mainly composed of a pair of left and right three-dimensional gathers BS and BS. Around the absorbent body 4, at the front and rear edge portions in the napkin longitudinal direction, the outer edge portion of the liquid-impermeable back sheet 2 and the liquid-permeable surface sheet 3 is formed of an adhesive such as hot melt, heat seal, or the like. The liquid-impervious back sheet 2 and the side nonwoven fabric 7 which are joined by an adhesive means and extend laterally from the edge of the absorbent body 4 at both side edges thereof are adhesives such as hot melt or heat. The outer periphery flap part in which the absorber 4 does not exist is formed on the outer periphery by being bonded by an adhesive means such as a seal.

以下、さらに前記生理用ナプキン１の構造について詳述すると、
前記不透液性裏面シート２は、ポリエチレンやポリプロピレン等のオレフィン系樹脂シートなどの少なくとも遮水性を有するシート材が用いられるが、この他にポリエチレンシート等に不織布を積層したラミネート不織布や、さらには防水フィルムを介在して実質的に不透液性を確保した上で不織布シート（この場合には防水フィルムと不織布とで不透液性裏面シートを構成する。）などを用いることができる。近年はムレ防止の観点から透湿性を有するものが用いられる傾向にある。この遮水・透湿性シート材は、ポリエチレンやポリプロピレン等のオレフィン系樹脂中に無機充填剤を溶融混練してシートを成形した後、一軸または二軸方向に延伸することにより得られる微多孔性シートである。 Hereinafter, the structure of the sanitary napkin 1 will be described in detail.
As the liquid-impermeable back sheet 2, a sheet material having at least water shielding properties such as an olefin resin sheet such as polyethylene or polypropylene is used. In addition, a laminated nonwoven fabric obtained by laminating a nonwoven fabric on a polyethylene sheet or the like, or A nonwoven fabric sheet (in this case, the waterproof film and the nonwoven fabric constitute a liquid-impervious back sheet) can be used after substantially impervious to liquid imperviousness by interposing a waterproof film. In recent years, those having moisture permeability tend to be used from the viewpoint of preventing stuffiness. This water- and moisture-permeable sheet material is a microporous sheet obtained by forming a sheet by melting and kneading an inorganic filler in an olefin resin such as polyethylene or polypropylene, and then stretching in a uniaxial or biaxial direction. It is.

次いで、前記透液性表面シート３は、有孔または無孔の不織布や多孔性プラスチックシートなどが好適に用いられる。不織布を構成する素材繊維としては、たとえばポリエチレンまたはポリプロピレン等のオレフィン系、ポリエステル系、ポリアミド系等の合成繊維の他、レーヨンやキュプラ等の再生繊維、綿等の天然繊維とすることができ、スパンレース法、スパンボンド法、サーマルボンド法、メルトブローン法、ニードルパンチ法等の適宜の加工法によって得られた不織布を用いることができる。これらの加工法の内、スパンレース法は柔軟性、スパンボンド法はドレープ性に富む点で優れ、サーマルボンド法及びエアスルー法は嵩高でソフトである点で優れている。   Next, as the liquid-permeable surface sheet 3, a porous or non-porous nonwoven fabric or a porous plastic sheet is preferably used. Examples of the material fibers constituting the nonwoven fabric include synthetic fibers such as polyethylene or polypropylene, synthetic fibers such as polyester and polyamide, recycled fibers such as rayon and cupra, and natural fibers such as cotton. A nonwoven fabric obtained by an appropriate processing method such as a lace method, a spun bond method, a thermal bond method, a melt blown method, or a needle punch method can be used. Of these processing methods, the spunlace method is excellent in terms of flexibility and the spunbond method is excellent in drapeability, and the thermal bond method and the air-through method are excellent in terms of being bulky and soft.

これら不透液性裏面シート２と透液性表面シート３との間に介在される吸収体４は、たとえばパルプ中に高吸水性樹脂を混入したもの、或いはパルプ中に化学繊維を混入させるとともに、高吸水性ポリマーを混入したものが使用される。前記吸収体４は、形状保持、および経血等を速やかに拡散させるとともに、一旦吸収した経血等の逆戻りを防止するためにクレープ紙５によって囲繞することが好ましいが、無くても構わない。   The absorbent body 4 interposed between the liquid-impervious back sheet 2 and the liquid-permeable top sheet 3 is, for example, a mixture of a superabsorbent resin in pulp or a mixture of chemical fibers in the pulp. A high water-absorbing polymer is used. The absorbent body 4 is preferably surrounded by the crepe paper 5 in order to maintain the shape, rapidly diffuse menstrual blood, and prevent reversal of once absorbed menstrual blood, but may be omitted.

前記パルプとしては、木材から得られる化学パルプ、溶融パルプ等のセルロース繊維や、レーヨン、アセテート等の人工セルロース繊維からなるものが挙げられ、広葉樹パルプよりは繊維長の長い針葉樹パルプの方が機能および価格の面で好適に使用される。薄型生理用ナプキンとする場合には、前記吸収体４として、エアレイド法により作製されたものが用いられる。また、前記高吸水性ポリマーとしては、高吸水ポリマー粒状粉（ＳＡＰ）や高吸水ポリマー繊維（ＳＡＦ）を用いることができる。   Examples of the pulp include chemical fibers obtained from wood, cellulose fibers such as molten pulp, and those made of artificial cellulose fibers such as rayon and acetate. It is preferably used in terms of price. In the case of a thin sanitary napkin, the absorbent body 4 manufactured by the airlaid method is used. Further, as the superabsorbent polymer, superabsorbent polymer granular powder (SAP) or superabsorbent polymer fiber (SAF) can be used.

一方、本生理用ナプキン１の表面側両側部にはそれぞれ、長手方向に沿ってかつナプキン１のほぼ全長に亘ってサイド不織布７，７が設けられている。このサイド不織布７，７が側方に延在されるとともに、同じく側方に延在された不透液性裏面シート２とによって側方フラップ部が形成されている。   On the other hand, side nonwoven fabrics 7 and 7 are provided on both sides of the sanitary napkin 1 on the surface side, respectively, along the longitudinal direction and over almost the entire length of the napkin 1. While these side nonwoven fabrics 7 and 7 are extended to the side, the side flap part is formed with the liquid-impermeable back sheet 2 also extended to the side.

前記サイド不織布７としては、重要視する機能の点から撥水処理不織布または親水処理不織布を使用することができる。たとえば、体液が浸透するのを防止する、あるいは肌触り感を高めるなどの機能を重視するならば、シリコン系、パラフィン系、アルキルクロミッククロリド系撥水剤などをコーティングした撥水処理不織布を用いることが望ましい。また、前記サイド不織布７における体液の吸収性を重視するならば、合成繊維の製造過程で親水基を持つ化合物、例えばポリエチレングリコールの酸化生成物などを共存させて重合させる方法や、塩化第２スズのような金属塩で処理し、表面を部分溶解し多孔性とし金属の水酸化物を沈着させる方法等により合成繊維を膨潤または多孔性とし、毛細管現象を応用して親水性を与えた親水処理不織布を用いるようにすることが望ましい。   As the side nonwoven fabric 7, a water-repellent treated nonwoven fabric or a hydrophilic treated nonwoven fabric can be used from the viewpoint of an important function. For example, if importance is placed on functions such as preventing the penetration of bodily fluids or enhancing the feeling of touch, it is necessary to use a water-repellent non-woven fabric coated with a silicon-based, paraffin-based, or alkylchromic chloride-based water repellent. desirable. Further, if importance is attached to the absorbability of body fluid in the side nonwoven fabric 7, a method of polymerizing a compound having a hydrophilic group, for example, an oxidation product of polyethylene glycol, in the process of producing a synthetic fiber, or stannic chloride Treatment with a metal salt, such as by partially dissolving the surface to make it porous and depositing metal hydroxide, etc. It is desirable to use a nonwoven fabric.

前記サイド不織布７は、図２に示されるように、幅方向中間部より外側部分を吸収体４の内側位置から吸収体側縁を若干越えて不透液性裏面シート２の外縁までの範囲に亘ってホットメルトなどの接着剤によって接着されている。一方、サイド不織布７の内方側部分は幅方向外側に折り返されるとともに、少なくとも折り返し先端部が二重シートによって構成され、この二重シート内部に、両端または長手方向の適宜の位置が固定された少なくとも１本の、図示例では１本の糸状弾性伸縮部材８が配設されている。図２(A)に示されるように、この幅方向外側に折り返された部分は、ナプキン長手方向の前後端部では下層側に接着されている。その他の前記糸状弾性伸縮部材８が配設されたナプキン長手方向の中間部では、図２(B)、(C)に示されるように、前記糸状弾性伸縮部材８の収縮作用によって表面側に起立する立体ギャザーＢＳ、ＢＳが形成されている。   As shown in FIG. 2, the side nonwoven fabric 7 has a portion outside the intermediate portion in the width direction ranging from the inner position of the absorbent body 4 to slightly beyond the absorbent side edge to the outer edge of the liquid-impermeable back sheet 2. It is bonded with an adhesive such as hot melt. On the other hand, the inner side portion of the side nonwoven fabric 7 is folded outward in the width direction, and at least the folded tip is constituted by a double sheet, and appropriate positions in both ends or in the longitudinal direction are fixed inside the double sheet. At least one thread elastic elastic member 8 in the illustrated example is disposed. As shown in FIG. 2 (A), the portion folded back outward in the width direction is bonded to the lower layer side at the front and rear ends in the napkin longitudinal direction. In the intermediate part in the longitudinal direction of the napkin where the other thread-like elastic elastic members 8 are arranged, as shown in FIGS. 2B and 2C, the thread-like elastic elastic members 8 stand up on the surface side due to the contraction action. The three-dimensional gather BS and BS to be formed are formed.

前記生理用ナプキン１の長手方向両側の外形線は、少なくとも長手方向中央部であって装着時に着用者の脚の付け根に接触する部分が、凸曲線と凹曲線が交互に繰り返し配置されることによって波状線を成すフリル状に形成されている。換言すると、生理用ナプキン１の幅が長手方向に沿って幅広部と幅狭部が交互に繰り返し形成されるフリル状に形成されている。また、立体ギャザーＢＳの自由端は、少なくとも長手方向中央部であって装着時に着用者の脚の付け根に接触する部分が、凸曲線と凹曲線が交互に繰り返し配置されることによって波状線を成すフリル状に形成されている。換言すると、立体ギャザーＢＳの基端部からの起立高さがナプキン長手方向に沿って高い部分と低い部分が交互に繰り返し形成されるフリル状に形成されている。   The contour lines on both sides in the longitudinal direction of the sanitary napkin 1 are at least a central portion in the longitudinal direction, and a portion that comes into contact with the root of the wearer's leg at the time of wearing is alternately arranged with a convex curve and a concave curve. It is formed in a frill shape forming a wavy line. In other words, the sanitary napkin 1 is formed in a frill shape in which a wide portion and a narrow portion are alternately and repeatedly formed along the longitudinal direction. In addition, the free end of the three-dimensional gather BS is at least a central portion in the longitudinal direction, and a portion that comes into contact with the base of the wearer's leg at the time of wearing forms a wavy line by alternately arranging convex curves and concave curves. It is formed in a frill shape. In other words, the standing height from the base end of the three-dimensional gather BS is formed in a frill shape in which high and low portions are alternately and repeatedly formed along the napkin longitudinal direction.

このように、ナプキン両側の外形線及び立体ギャザーＢＳの自由端をそれぞれフリル状に形成することによって、ナプキン外形線及びギャザー自由端が装着時に着用者の脚周りに対して点状に接触するため、着用者の肌との間の摩擦による擦れが緩和され、痛みや違和感などの肌トラブルを生じ難くすることができるようになる。   In this way, by forming the contour lines on both sides of the napkin and the free ends of the three-dimensional gather BS in a frilled shape, the napkin contour lines and the gather free ends come into contact with the circumference of the wearer's legs in a point-like manner when worn. Rub due to friction with the wearer's skin is relieved, and skin troubles such as pain and discomfort can be made difficult to occur.

図１に示される生理用ナプキン１では、展開状態で、生理用ナプキン１の長手方向両側の外形線と立体ギャザーＢＳの自由端の外形線がほぼ一致するように、立体ギャザーＢＳを構成する幅方向外側に折り返した部分の端部がナプキン外縁まで延在して配設されている。これによって、後段で詳述するようにナプキン外形線の裁断と立体ギャザーＢＳの裁断が同時にでき、製造工程が簡略化できるようになる。   In the sanitary napkin 1 shown in FIG. 1, the width constituting the three-dimensional gather BS so that the outlines on both sides in the longitudinal direction of the sanitary napkin 1 substantially coincide with the outline of the free end of the three-dimensional gather BS in the unfolded state. The end of the portion turned back outward in the direction extends to the outer edge of the napkin. This makes it possible to simultaneously cut the napkin outline and the three-dimensional gather BS, as will be described in detail later, and to simplify the manufacturing process.

また、前記立体ギャザーＢＳに配設される糸状弾性伸縮部材８は、図１に示されるように、立体ギャザーＢＳのフリル形状に重ならないように配設することが望ましい。すなわち、前記糸状弾性伸縮部材８は、立体ギャザーＢＳの自由端との間にナプキン幅方向に所定の離間幅を有しながら前記自由端より内側に配設されている。前記糸状弾性伸縮部材８と立体ギャザーＢＳの自由端との離間幅Ｓは、最も小さくなる凹曲線の頂部において、少なくとも１．５ｍｍ程度とすることが望ましい。糸状弾性伸縮部材８がフリル形状に重なったり、離間幅Ｓが小さすぎると、糸状弾性伸縮部材８が肌に接触して擦れやすくなり、肌トラブルの原因となる。   Moreover, as shown in FIG. 1, it is desirable that the thread-like elastic elastic members 8 provided in the three-dimensional gather BS are arranged so as not to overlap the frill shape of the three-dimensional gather BS. That is, the thread-like elastic elastic member 8 is disposed on the inner side of the free end while having a predetermined separation width in the napkin width direction between the free end of the three-dimensional gather BS. The separation width S between the elastic elastic member 8 and the free end of the three-dimensional gather BS is preferably about 1.5 mm at the top of the concave curve that is the smallest. If the thread-like elastic elastic member 8 overlaps the frill shape, or if the separation width S is too small, the thread-like elastic elastic member 8 comes into contact with the skin and rubs easily, causing skin troubles.

図１に示される例では、糸状弾性伸縮部材８は、ナプキン長手方向に沿って直線状に配設されているが、図３に示されるように、立体ギャザーＢＳのフリル形状に沿って波状に配設することも可能である。このような波状に配設した場合には、立体ギャザーＢＳの起立時に、糸状弾性伸縮部材８が収縮して直線状に変形する結果、立体ギャザーＢＳの波状線のうち外側に突出する凸曲線の部分が、長手方向に収縮するとともに幅方向内側に引き寄せられるように変形するので、図３(B)に示されるように、糸状弾性伸縮部材８より自由端側部分が立体ギャザーＢＳの起立面に対して外側にめくれ返ったように変形する。このため、立体ギャザーＢＳの自由端の肌当たりがより一層柔軟になる。   In the example shown in FIG. 1, the thread-like elastic elastic members 8 are arranged linearly along the napkin longitudinal direction, but as shown in FIG. 3, they are waved along the frill shape of the three-dimensional gather BS. It is also possible to arrange. When arranged in such a wavy shape, the elastic elastic elastic member 8 contracts and deforms into a linear shape when the three-dimensional gather BS stands up. As a result, the convex curve projecting outward from the wavy line of the three-dimensional gather BS. Since the portion contracts in the longitudinal direction and is deformed so as to be drawn inward in the width direction, the free end side portion from the thread-like elastic elastic member 8 becomes an upright surface of the three-dimensional gather BS as shown in FIG. On the other hand, it deforms as if it is turned over to the outside. For this reason, the contact of the free end of the three-dimensional gather BS becomes more flexible.

図１に示される例では、ナプキン外形線と立体ギャザーＢＳの自由端がほぼ一致する波状に形成されているが、図４及び図５に示されるように、両者の波状線の位相、振幅及び／又は波長が異なるように形成することも可能である。図４に示される例では、ナプキン外形線の波状線と立体ギャザーＢＳの自由端の波状線は、振幅及び波長がほぼ同等で、位相が２分の１周期分ずれた状態で、フリル形状の凸曲線の頂点を結ぶ線がほぼ同一の線上に位置するように形成されている。これによって、一方の波状線の内側に凸となる凹曲線部分に、他方の波状線の外側に凸となる凸曲線が位置するようになる。従って、一方の波状線の凹曲線は、吸収体４の側縁との距離や立体ギャザーＢＳの起立高さが短いため、肌との間に隙間が生じやすく漏れが発生しやすい部分であるが、この凹曲線に他方の波状線の凸曲線が重なって配置してあるため、この凸曲線が肌に接触して漏れを補うように作用する。   In the example shown in FIG. 1, the napkin outline and the free end of the three-dimensional gather BS are formed in a wavy shape, but as shown in FIGS. 4 and 5, the phase, amplitude, and It is also possible to form them with different wavelengths. In the example shown in FIG. 4, the wavy line of the napkin outline and the wavy line of the free end of the three-dimensional gather BS are substantially the same in amplitude and wavelength, and in a state where the phase is shifted by a half cycle, The lines connecting the vertices of the convex curves are formed so as to be located on substantially the same line. As a result, a convex curve that is convex outside the other wavy line is positioned in the concave curve portion that is convex inside the one wavy line. Accordingly, the concave curve of one wavy line is a portion where the gap between the skin 4 and the skin is likely to occur because the distance from the side edge of the absorber 4 and the standing height of the three-dimensional gather BS are short. Since the convex curve of the other wavy line overlaps with this concave curve, this convex curve acts to make contact with the skin and compensate for leakage.

また、図５に示される例は、両フリル形状の波状線の波長（隣接する凸曲線同士の間隔）を異ならせたものである。ナプキン外形線の波長Ｌ１及び立体ギャザーＢＳ自由端の波長Ｌ２はともに、細かくした方が肌に接触する部分が点に近づくため、より肌当たりが良くなるが、あまり細かくしすぎると波状にした効果が失われてしまう。従って、前記波長Ｌ１、Ｌ２はそれぞれ、５〜３０ｍｍ、好ましくは１５〜２５ｍｍとするのがよい。   In the example shown in FIG. 5, the wavelengths of the two frill-shaped wavy lines (intervals between adjacent convex curves) are made different. Both the wavelength L1 of the napkin outline and the wavelength L2 of the free end of the three-dimensional gather BS are closer to the point because the part that contacts the skin is closer to the point, but the effect of making it wavy if it is too fine Will be lost. Therefore, the wavelengths L1 and L2 are 5 to 30 mm, preferably 15 to 25 mm, respectively.

また図示しないが、両波状線の振幅が異なるように形成してもよい。例えば、ナプキン外形線は脚の付け根に接触して立体ギャザーＢＳより脚圧を大きく受けやすいので、立体ギャザーＢＳのフリル形状の振幅より大きくして波状の凸曲線を潰れにくくすることができる。   Although not shown, they may be formed so that the amplitudes of both wavy lines are different. For example, the napkin outline is in contact with the base of the leg and is more likely to receive a leg pressure than the three-dimensional gather BS, so that it can be made larger than the frill-shaped amplitude of the three-dimensional gather BS to make the wavy convex curve difficult to collapse.

また、図６に示されるように、ナプキン本体両側のフラップ部であって不透液性裏面シート２とサイド不織布７との間に、ナプキン長手方向に沿って少なくとも１本の糸状弾性伸縮部材９を配設することにより、ナプキン本体の両側にギャザーを形成してもよい。これによって、ナプキン表面側の両側部には、前記立体ギャザーＢＳの外側に更にギャザーが設けられた二重ギャザーが形成されるようになり、脚の付け根に対する密着度を高めることができるようになる。   Further, as shown in FIG. 6, at least one thread-like elastic elastic member 9 which is a flap portion on both sides of the napkin body and between the liquid-impermeable back sheet 2 and the side nonwoven fabric 7 along the longitudinal direction of the napkin. By gathering, gathers may be formed on both sides of the napkin body. As a result, double gathers in which gathers are further provided outside the solid gather BS are formed on both sides of the napkin surface side, and the degree of adhesion to the base of the legs can be increased. .

前記立体ギャザーＢＳは、糸状弾性伸縮部材８より自由端側の二重不織布７、７間を非接着としてヒラヒラさせておいてもよい。これによって、ギャザー先端部の肌当たりをより一層柔らかくでき、擦れ感が更に低減できる。   In the three-dimensional gather BS, the double nonwoven fabrics 7 and 7 on the free end side from the thread-like elastic elastic member 8 may be flickered as non-bonded. As a result, the skin contact at the gather tip can be further softened, and the feeling of rubbing can be further reduced.

本生理用ナプキン１の製造に当たっては、ナプキン外形のフリル形状と立体ギャザーＢＳのフリル形状を一致させる場合には、サイド不織布７を適宜折り畳み、透液性表面シート３とサイド不織布７とを貼り合わせ、吸収体４の表面側に貼り合わせる。その後、これらの積層体を不透液性裏面シート２の上面に貼り合わせた状態で、製品カッターでサイド不織布７の折り返し端部とともに不透液性裏面シート２を裁断することによって、ナプキン外形線のフリル形状と立体ギャザーＢＳ自由端のフリル形状とを同時に形成することができる。   In manufacturing the sanitary napkin 1, when the frill shape of the napkin and the frill shape of the three-dimensional gather BS are matched, the side nonwoven fabric 7 is appropriately folded, and the liquid-permeable surface sheet 3 and the side nonwoven fabric 7 are bonded together. Then, it is bonded to the surface side of the absorber 4. Then, in a state where these laminates are bonded to the upper surface of the liquid-impervious back sheet 2, the liquid-impervious back sheet 2 is cut together with the folded end portion of the side nonwoven fabric 7 with a product cutter, thereby forming a napkin outline. And the ruffle shape of the free end of the three-dimensional gather BS can be formed at the same time.

一方、図４に示されるように、波状線の位相をずらした場合であって、立体ギャザーＢＳの自由端の少なくとも一部がナプキン外形線より外側に位置する場合には、ナプキン外形線のフリル形状と立体ギャザーＢＳのフリル形状とを別々に裁断する必要がある。この場合、不透液性裏面シート２の両側縁をフリル形状に裁断した後、ナプキン外形線に対応する側縁を前記不透液性裏面シート２と同じフリル形状に裁断するとともに、立体ギャザーＢＳの自由端に対応する側縁を所定のフリル形状に裁断したサイド不織布を、前記不透液性裏面シート２の波状線に位置合わせしながら積層して接着し、しかる後、ナプキン前後端を裁断することによって製造できる。   On the other hand, as shown in FIG. 4, when the phase of the wavy line is shifted and at least a part of the free end of the three-dimensional gather BS is located outside the napkin outline, It is necessary to cut the shape and the frill shape of the three-dimensional gather BS separately. In this case, both side edges of the liquid-impermeable back sheet 2 are cut into a frill shape, and then the side edges corresponding to the napkin outline are cut into the same frill shape as the liquid-impervious back sheet 2 and the three-dimensional gather BS A side nonwoven fabric cut into a predetermined frill shape at the side edge corresponding to the free end of the sheet is laminated and bonded while being aligned with the wavy line of the liquid-impervious backsheet 2, and then the front and rear ends of the napkin are cut. Can be manufactured.

また、図５に示される両フリル形状の波長を異ならせた場合や、振幅を異ならせた場合、立体ギャザーＢＳの自由端がナプキン外形線のフリル形状より外側にはみ出るものについては、上述の不透液性裏面シート２とサイド不織布７とをそれぞれ別々に波状線に裁断したものを位置合わせしながら積層して接着することによって製造できる。他方、立体ギャザーＢＳの自由端がナプキン外形線のフリル形状より内側に位置するものについては、サイド不織布７の立体ギャザーＢＳの自由端に対応する側縁のみをフリル形状にカットした後、不透液性裏面シート２に積層して接着した状態で、製品カッターで不透液性裏面シート２及びサイド不織布７をともにナプキン外形線に裁断することによって製造することができる。   Further, in the case where the wavelengths of the two frill shapes shown in FIG. 5 are made different or the amplitude is made different, the above-mentioned non-existence is applied to the case where the free end of the three-dimensional gather BS protrudes outside the frill shape of the napkin outline. The liquid-permeable back sheet 2 and the side nonwoven fabric 7 can be manufactured by laminating and bonding them together while aligning the cut pieces of wavy lines. On the other hand, in the case where the free end of the three-dimensional gather BS is located inside the frill shape of the napkin outline, only the side edge corresponding to the free end of the three-dimensional gather BS of the side nonwoven fabric 7 is cut into a frill shape, and then impervious. It can be manufactured by cutting both the liquid-impervious back sheet 2 and the side nonwoven fabric 7 into a napkin outline with a product cutter in a state of being laminated and adhered to the liquid back sheet 2.

ところで、ナプキン両側の外形線と立体ギャザーＢＳの自由端を同一のフリル形状で形成した場合、図１に示されるように両者のフリル形状が一致するように配置することが望ましいが、ナプキン外形線と立体ギャザーＢＳの自由端が幅方向に位置ズレするように配置してもよい。   By the way, when the outlines on both sides of the napkin and the free ends of the three-dimensional gather BS are formed in the same frill shape, it is desirable to arrange them so that both frill shapes coincide as shown in FIG. And the free end of the three-dimensional gather BS may be arranged so as to be displaced in the width direction.

〔他の形態例〕
(1)上記形態例では、立体ギャザーＢＳは、図２に示されるように、自由端が外側を向く外向きのギャザーの場合について説明したが、図７及び図８に示されるように、自由端が内側を向く内向きのギャザーについても同様に適用できる。
(2)上記形態例では、立体ギャザーＢＳは、生理用ナプキン１の側縁まで延在するサイド不織布７の内側部分によって形成していたが、前記サイド不織布７とは別の立体ギャザー用不織布によって立体ギャザーＢＳを形成し、生理用ナプキン１の表面側両側部に接合するようにしてもよい。 [Other examples]
(1) In the above embodiment, the case where the three-dimensional gather BS is an outward gather with the free end facing outward as shown in FIG. 2 has been described. However, as shown in FIGS. The same applies to an inward gather with the end facing inward.
(2) In the above embodiment, the three-dimensional gather BS is formed by the inner part of the side nonwoven fabric 7 extending to the side edge of the sanitary napkin 1, but the three-dimensional gather nonwoven fabric different from the side nonwoven fabric 7 is used. A three-dimensional gather BS may be formed and joined to both side portions on the surface side of the sanitary napkin 1.

１…生理用ナプキン、２…不透液性裏面シート、３…透液性表面シート、４…吸収体、７…サイド不織布、８・９…糸状弾性伸縮部材   DESCRIPTION OF SYMBOLS 1 ... Sanitary napkin, 2 ... Liquid impervious back sheet, 3 ... Liquid permeable top sheet, 4 ... Absorber, 7 ... Side nonwoven fabric, 8 * 9 ... String-like elastic elastic member

Claims (3)

透液性表面シートと裏面シートとの間に吸収体が介在されるとともに、肌側の長手方向両側部にそれぞれ長手方向に沿って立体ギャザーが形成された吸収性物品において、
前記吸収性物品の長手方向両側の外形線が波状を成すフリル状に形成されるとともに、前記立体ギャザーの自由端が波状を成すフリル状に形成されていることを特徴とする吸収性物品。 In the absorbent article in which the absorbent body is interposed between the liquid-permeable top sheet and the back sheet, and three-dimensional gathers are formed along the longitudinal direction on both sides in the longitudinal direction on the skin side,
The absorbent article is characterized in that outer lines on both sides in the longitudinal direction of the absorbent article are formed in a wavy frill shape, and the free end of the three-dimensional gather is formed in a wavy frill shape. 前記立体ギャザーは、吸収性物品の長手方向に沿って少なくとも１本の弾性伸縮部材を有し、
前記弾性伸縮部材は、前記立体ギャザーのフリル形状に重ならないように配設されている請求項１記載の吸収性物品。 The three-dimensional gather has at least one elastic elastic member along the longitudinal direction of the absorbent article,
The absorbent article according to claim 1, wherein the elastic elastic member is disposed so as not to overlap the frill shape of the three-dimensional gather. 前記外形線のフリル形状と立体ギャザーのフリル形状とは、同一の波状に形成されるか、位相、振幅及び／又は波長が異なる波状に形成されている請求項１、２いずれかに記載の吸収性物品。 The absorption according to claim 1 , wherein the frill shape of the outline and the frill shape of the three-dimensional gather are formed in the same wave shape, or in the wave shape having different phases, amplitudes, and / or wavelengths. Sex goods.
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000239903A (en) * 1999-02-19 2000-09-05 Berusante:Kk Liquid absorbent pad
JP2000271167A (en) * 1999-03-29 2000-10-03 Crecia Corp Absorptive article capable of preventing side leakage and excellent in fit feeling
JP2003111792A (en) * 2001-10-04 2003-04-15 Daio Paper Corp Absorptive article
JP2009131501A (en) * 2007-11-30 2009-06-18 Daio Paper Corp Absorbent article
JP2011156254A (en) * 2010-02-03 2011-08-18 Kao Corp Absorptive article
JP2013078492A (en) * 2011-10-04 2013-05-02 Unicare Corp Diaper and method for producing the same

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000239903A (en) * 1999-02-19 2000-09-05 Berusante:Kk Liquid absorbent pad
JP2000271167A (en) * 1999-03-29 2000-10-03 Crecia Corp Absorptive article capable of preventing side leakage and excellent in fit feeling
JP2003111792A (en) * 2001-10-04 2003-04-15 Daio Paper Corp Absorptive article
JP2009131501A (en) * 2007-11-30 2009-06-18 Daio Paper Corp Absorbent article
JP2011156254A (en) * 2010-02-03 2011-08-18 Kao Corp Absorptive article
JP2013078492A (en) * 2011-10-04 2013-05-02 Unicare Corp Diaper and method for producing the same

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