JP5084476B2 - Absorbent articles - Google Patents

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JP5084476B2
JP5084476B2 JP2007314997A JP2007314997A JP5084476B2 JP 5084476 B2 JP5084476 B2 JP 5084476B2 JP 2007314997 A JP2007314997 A JP 2007314997A JP 2007314997 A JP2007314997 A JP 2007314997A JP 5084476 B2 JP5084476 B2 JP 5084476B2
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liquid flow
flow prevention
sanitary napkin
prevention wall
contact surface
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JP2009136448A (en
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研 根本
進介 長原
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Kao Corp
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Kao Corp
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Description

本発明は、生理用ナプキン、失禁パッド、使い捨ておむつ等の吸収性物品に関する。   The present invention relates to absorbent articles such as sanitary napkins, incontinence pads, and disposable diapers.

従来、生理用ナプキンの漏れ防止機能を向上させるために、開孔を有する表面シートを使用し、この表面シートと吸収体とを固定するエンボスを略長円状に連結した環状エンボスを設けた生理用ナプキンの技術が特許文献１に開示されている。
しかしながら、引用文献１に記載の生理用ナプキンでは、着用中に、着用者の肌と生理用ナプキンとの間に空間ができた場合、着用者の肌を伝わって漏れる伝い漏れを防止することが困難であった。このような伝い漏れは、例えば、就寝中の寝返りにより着用者の肌と生理用ナプキンとの間に空間ができ、着用者の肌を伝わって生理用ナプキンの背側から漏れるという場合がある。 Conventionally, in order to improve the leakage prevention function of sanitary napkins, a surface sheet having an opening is used, and a physiological embossment provided with an annular embossing in which the embossing for fixing the surface sheet and the absorbent body is connected in an approximately oval shape. The technique of the napkin for use is disclosed in Patent Document 1.
However, in the sanitary napkin described in the cited document 1, when a space is created between the wearer's skin and the sanitary napkin during wearing, it is possible to prevent transmission leakage that leaks along the wearer's skin. It was difficult. Such a transmission leak may be, for example, a space between the wearer's skin and a sanitary napkin due to turning over while sleeping, and leaking from the back of the sanitary napkin along the wearer's skin.

また、着用者の肌に密接して生理用ナプキンが使用されるように、表面に凹凸形状を有する表面シートを使用し、この表面シートと吸収体とを固定するエンボスを略長円状に連結した環状エンボスを設けた生理用ナプキンの技術が特許文献２に開示されている。
しかしながら、熱エンボスロールにより表面シートを凹凸形状に賦形するには限界があり、伝い漏れを十分に防止することが困難であった。
尚、引用文献２に記載の生理用ナプキンに凹凸形状の表面シートを使用する目的は、表面シートと着用者の肌と張り付き難く、不快感を解消するためであり、伝い漏れについては、何ら記載されていない。 In addition, a surface sheet having an uneven surface is used so that the sanitary napkin is used in close contact with the wearer's skin, and the embossing that fixes the surface sheet and the absorbent body is connected in a substantially oval shape. The technique of the sanitary napkin provided with the annular embossing is disclosed in Patent Document 2.
However, there is a limit to shaping the surface sheet into a concavo-convex shape with a hot embossing roll, and it has been difficult to sufficiently prevent transmission leakage.
The purpose of using the concavo-convex surface sheet for the sanitary napkin described in Cited Document 2 is to prevent the surface sheet and the skin of the wearer from sticking, and to eliminate discomfort. It has not been.

特開２００２−２８２３０４号公報JP 2002-282304 A 特開２００４−４６５号公報JP 2004-465 A

したがって、本発明の目的は、着用中に、着用者の肌と生理用ナプキンとの間に空間を生じず、着用者の肌を伝わって漏れる伝い漏れを防止することができる吸収性物品を提供することにある。   Accordingly, an object of the present invention is to provide an absorbent article that can prevent a leak from being transmitted through the wearer's skin without creating a space between the wearer's skin and the sanitary napkin during wear. There is to do.

本発明は、肌当接面側に液透過性の表面シート、非肌当接面側に液難透過性の裏面シート及びこれら両シート間に配された吸収体を具備する縦長の吸収性物品において、前記表面シートの肌当接面に、肌当接面側に盛り上がり且つ前記吸収性物品の幅方向に延びる液流れ防止壁、及び該表面シートと前記吸収体とを固着し長手方向の両側部に沿って延びる一対の防漏溝を設け、前記液流れ防止壁は、長手方向後方領域に位置し且つ一対の前記防漏溝間に亘って設けられている吸収性物品を提供することにより前記目的を達成したものである。   The present invention is a vertically long absorbent article comprising a liquid-permeable surface sheet on the skin contact surface side, a liquid-impermeable back sheet on the non-skin contact surface side, and an absorber disposed between the two sheets. A liquid flow preventing wall that rises toward the skin contact surface side and extends in the width direction of the absorbent article, and both the longitudinal sheet and the absorbent body are fixed to the skin contact surface of the surface sheet. By providing a pair of leak-proof grooves extending along the section, and providing the absorbent article in which the liquid flow prevention wall is located in the longitudinal rearward region and is provided between the pair of leak-proof grooves. The object has been achieved.

本発明の吸収性物品によれば、着用中に、着用者の肌と生理用ナプキンとの間に空間を生じず、着用者の肌を伝わって漏れる伝い漏れを防止することができる。   According to the absorbent article of the present invention, a space between the wearer's skin and the sanitary napkin is not created during wearing, and transmission leakage that leaks along the wearer's skin can be prevented.

以下、本発明の吸収性物品のである生理用ナプキンの好ましい一実施形態について、図１〜６に基づいて説明する。尚、各図中、同一符号は同一又は同等の構成要素を示している。   Hereinafter, one preferable embodiment of the sanitary napkin which is the absorbent article of the present invention will be described with reference to FIGS. In each figure, the same numerals indicate the same or equivalent components.

本実施形態の吸収性物品（生理用ナプキン）１は、図１〜５に示すように、肌当接面側に配置された液透過性の表面シート２、非肌当接面側に配置された液難透過性の裏面シート３及びこれら両シート２，３間に介在された液保持性の吸水体４とを具備する縦長の生理用ナプキン１である。表面シート２は、着用時に着用者の肌に向けられる肌当接面を形成しており、吸収体４よりも大きい外径寸法を有し、その長手方向の左右両側縁部は、吸収体４の左右の両側部を覆って吸収体４の裏面側に位置し、吸収体４の裏面側において、接着剤を介して裏面シート３に接合されている。表面シート２及び裏面シート３は、生理用ナプキン１の長手方向の両端部において、吸収体４の長手方向の両端部から延出し、その延出部は互いにヒートシール等により接合されて接合部５を形成している。これらの構成は、従来品と同じである。   The absorbent article (sanitary napkin) 1 of this embodiment is arrange | positioned at the liquid-permeable surface sheet 2 arrange | positioned at the skin contact surface side, the non-skin contact surface side, as shown in FIGS. This is a vertically long sanitary napkin 1 comprising a liquid-impermeable back sheet 3 and a liquid-retaining water absorbent 4 interposed between the two sheets 2 and 3. The topsheet 2 forms a skin contact surface that is directed to the wearer's skin when worn, has a larger outer diameter than the absorbent body 4, and the left and right side edges in the longitudinal direction thereof are the absorbent body 4. Are located on the back side of the absorbent body 4 and are bonded to the back sheet 3 via an adhesive on the back side of the absorbent body 4. The top sheet 2 and the back sheet 3 are extended from both longitudinal ends of the absorbent body 4 at both longitudinal ends of the sanitary napkin 1, and the extended portions are joined to each other by heat sealing or the like. Is forming. These configurations are the same as the conventional products.

本実施形態の生理用ナプキン１の表面シート２の肌当接面には、図１に示すように、肌当接面側に盛り上がり且つ生理用ナプキン１の幅方向に延びる液流れ防止壁６及び表面シート２と吸収体４とを固着し（図３，４参照）、長手方向の両側部に沿って延びる一対の防漏溝７が設けられている。液流れ防止壁６は、一対の防漏溝７間に亘って設けられている。   On the skin contact surface of the top sheet 2 of the sanitary napkin 1 of the present embodiment, as shown in FIG. 1, a liquid flow prevention wall 6 that rises toward the skin contact surface and extends in the width direction of the sanitary napkin 1. The topsheet 2 and the absorbent body 4 are fixed (see FIGS. 3 and 4), and a pair of leak-proof grooves 7 extending along both sides in the longitudinal direction are provided. The liquid flow prevention wall 6 is provided between the pair of leakage prevention grooves 7.

本実施形態の生理用ナプキン１の液流れ防止壁６は、図１に示すように、長手方向後方領域１ａに位置し且つ一対の防漏溝７間に亘って設けられた第１液流れ防止壁６ａと、更に、一対の前記防漏溝７それぞれの幅方向外側にも設けられた一対の第２液流れ防止壁６ｂとからなる。   The liquid flow prevention wall 6 of the sanitary napkin 1 of the present embodiment is located in the longitudinal direction rear region 1a and is provided between the pair of leakage prevention grooves 7 as shown in FIG. It consists of a wall 6a and a pair of second liquid flow prevention walls 6b provided on the outer sides in the width direction of each of the pair of leakage preventing grooves 7.

本実施形態の生理用ナプキン１の表面シート２は、２枚のシート２ａ，２ｂで形成されており、本実施形態の生理用ナプキン１の液流れ防止壁６は、肌当接面側の上層シート２ａで形成されている。ここで上層シートとは、表面シート２の中で最も吸収体４に近いシート（下層シートとも言う）以外のシートを示す。液流れ防止壁６は、着用者の肌を伝わって漏れる伝い漏れを防止するものであり、図１に示すように、装着時に、着用者の後側に位置し、着用者の排泄部に対抗配置される排泄部対向領域より後方の領域である長手方向後方領域１ａに設けられている。生理用ナプキン１には、図１，５に示すように、５本の液流れ防止壁６が設けられており、それぞれ、生理用ナプキン１の長手方向に略等間隔を置いて、生理用ナプキン１の幅方向に平行に配置されている。隣接する液流れ防止壁６のそれぞれの間隔Ｗ１は、１〜３０ｍｍである。液流れ防止壁６の本数は、一本のみ設けられていても良いが、好ましくは２〜６０本である。   The top sheet 2 of the sanitary napkin 1 of the present embodiment is formed of two sheets 2a and 2b, and the liquid flow prevention wall 6 of the sanitary napkin 1 of the present embodiment is an upper layer on the skin contact surface side. It is formed of a sheet 2a. Here, the upper layer sheet refers to a sheet other than the sheet (also referred to as the lower layer sheet) closest to the absorber 4 in the top sheet 2. The liquid flow prevention wall 6 is for preventing leakage through the wearer's skin, and as shown in FIG. 1, the liquid flow prevention wall 6 is located on the back side of the wearer and is opposed to the excretion part of the wearer. It is provided in the longitudinal rear region 1a, which is a region behind the disposed excretory part facing region. As shown in FIGS. 1 and 5, the sanitary napkin 1 is provided with five liquid flow prevention walls 6, and the sanitary napkin 1 is arranged at substantially equal intervals in the longitudinal direction of the sanitary napkin 1. 1 is arranged in parallel to the width direction. The interval W1 between the adjacent liquid flow prevention walls 6 is 1 to 30 mm. Although the number of the liquid flow prevention walls 6 may be provided only one, it is preferably 2 to 60.

本実施形態の生理用ナプキン１の液流れ防止壁６の第１液流れ防止壁６ａは、一対の防漏溝７間に亘って設けられており、平面視で直線形状である。図１，５に示す第１液流れ防止壁６ａの幅Ｗ２は、２〜５ｍｍであり、また、図３，５に示す第１液流れ防止壁６の高さｈ１は、１〜１０ｍｍである。このように、第１液流れ防止壁６の高さｈ１が、第１液流れ防止壁６ａの幅Ｗ２の５０％以上、２００％以下であるため、防漏溝７のエンボス時に潰れずにせり出し、以下に説明する入り込み部８を形成することができる。他の第１液流れ防止壁６ａの幅及び高さについても同様である。   The first liquid flow prevention wall 6a of the liquid flow prevention wall 6 of the sanitary napkin 1 of the present embodiment is provided across the pair of leakage prevention grooves 7 and has a linear shape in plan view. The width W2 of the first liquid flow prevention wall 6a shown in FIGS. 1 and 5 is 2 to 5 mm, and the height h1 of the first liquid flow prevention wall 6 shown in FIGS. 3 and 5 is 1 to 10 mm. . As described above, the height h1 of the first liquid flow prevention wall 6 is not less than 50% and not more than 200% of the width W2 of the first liquid flow prevention wall 6a. The entering portion 8 described below can be formed. The same applies to the width and height of the other first liquid flow prevention walls 6a.

本実施形態の生理用ナプキン１の液流れ防止壁６の第１液流れ防止壁６ａと防漏溝７との関係について、図１〜４を参照し、生理用ナプキン１の右側の部分を説明する。
図３に示すように、第１液流れ防止壁６ａは、肌当接面側の上層シート２ａで形成されており、図２，３に示すように、上層シート２ａには、生理用ナプキン１の幅方向における一対の防漏溝７において、非肌当接面側に窪んだ凹部２ａ’が形成されている。一対の防漏溝７と接する部分の凹部２ａ’それぞれには、防漏溝７内側まで延在し、防漏溝７に入り込んだ第１入り込み部８ａを形成している。この凹部２ａ’の深さ方向における底部表面２ａ’’は、吸収体４の平坦部表面４ａよりも、深さ方向において非肌当接面側に窪んでいる。
本実施形態の生理用ナプキン１の防漏溝７は、使用時に表面シート２及び吸収体４の皺・ヨレの発生を抑え、着用者へのフィット性及び体液の吸収性を高めるために設けるものであり、図４に示す防漏溝７の断面図は、液流れ防止壁６と接触していない部分を示している。 With respect to the relationship between the first liquid flow prevention wall 6a of the liquid flow prevention wall 6 of the sanitary napkin 1 of the present embodiment and the leakage prevention groove 7, the right part of the sanitary napkin 1 will be described with reference to FIGS. To do.
As shown in FIG. 3, the first liquid flow prevention wall 6 a is formed by the upper layer sheet 2 a on the skin contact surface side. As shown in FIGS. 2 and 3, the upper layer sheet 2 a has a sanitary napkin 1. In the pair of leak-proof grooves 7 in the width direction, a recess 2a ′ that is recessed toward the non-skin contact surface is formed. In each of the recesses 2 a ′ that are in contact with the pair of leakage preventing grooves 7, a first entry portion 8 a that extends to the inside of the leakage preventing groove 7 and enters the leakage preventing groove 7 is formed. The bottom surface 2 a ″ in the depth direction of the recess 2 a ′ is recessed toward the non-skin contact surface side in the depth direction than the flat surface 4 a of the absorber 4.
The leak-proof groove 7 of the sanitary napkin 1 according to the present embodiment is provided to suppress the occurrence of wrinkling and twisting of the top sheet 2 and the absorbent body 4 during use, and to improve the fit to the wearer and the absorbability of body fluids. 4 is a cross-sectional view of the leak-proof groove 7 shown in FIG.

図１に示すように、本実施形態の生理用ナプキン１の防漏溝７の間隔Ｗ３は、２０〜６０ｍｍであり、図２，３に示すように、防漏溝７の溝幅Ｗ４は、１〜４ｍｍである。また、図２，３に示すように、入り込み部の溝幅Ｗ５は、防漏溝７の溝幅Ｗ４、詳述すれば、凹部２ａ’の底部の溝幅Ｗ４よりも幅狭となっている。図２，３に示すように、第１入り込み部８ａは、防漏溝７の壁面から防漏溝７の内側に向かって突出しており、その突出頂部と防漏溝７の壁面までの距離（高さ）ｈ２は、０．５〜２ｍｍである。
本実施形態の生理用ナプキン１の第１液流れ防止壁６ａの長さＬ１は、両端に第１入り込み部８ａがそれぞれ形成されているため、一対の防漏溝７の間隔Ｗ３より若干長く、２１〜６４ｍｍである。 As shown in FIG. 1, the interval W3 of the leak-proof groove 7 of the sanitary napkin 1 of the present embodiment is 20 to 60 mm, and as shown in FIGS. 1 to 4 mm. As shown in FIGS. 2 and 3, the groove width W5 of the intrusion portion is narrower than the groove width W4 of the leakage preventing groove 7, more specifically, the groove width W4 of the bottom portion of the recess 2a ′. . As shown in FIGS. 2 and 3, the first intrusion portion 8 a protrudes from the wall surface of the leak-proof groove 7 toward the inside of the leak-proof groove 7, and the distance between the protruding top portion and the wall surface of the leak-proof groove 7 ( Height) h2 is 0.5-2 mm.
The length L1 of the first liquid flow prevention wall 6a of the sanitary napkin 1 of the present embodiment is slightly longer than the interval W3 between the pair of leakage preventing grooves 7, since the first entry portions 8a are formed at both ends, respectively. 21-64 mm.

本実施形態の生理用ナプキン１の液流れ防止壁６は、更に、一対の防漏溝７それぞれの幅方向外側にも設けられており、入り込み部８は、一対の防漏溝７それぞれの内側に対向して設けられている。図１に示すように、液流れ防止壁６は、一対の防漏溝７間に亘って設けられた第１液流れ防止壁６ａと、更に、一対の防漏溝７それぞれから、それらの幅方向外側にも設けられた一対の第２液流れ防止壁６ｂとからなる。図２，３に示すように、一対の防漏溝７の右側は、第１液流れ防止壁６ａの第１入り込み部８ａと第２液流れ防止壁６ｂの第２入り込み部８ｂとが対向して設けられている。本実施形態では、対向して設けられた第１入り込み部８ａと第２入り込み部８ｂとが接しないように形成されている。   The liquid flow prevention wall 6 of the sanitary napkin 1 of the present embodiment is further provided on the outer side in the width direction of each of the pair of leakage preventing grooves 7, and the entering portion 8 is formed on the inner side of each of the pair of leakage preventing grooves 7. It is provided opposite to. As shown in FIG. 1, the liquid flow prevention wall 6 includes a first liquid flow prevention wall 6 a provided between the pair of leakage prevention grooves 7, and a width of each of the pair of leakage prevention grooves 7. It consists of a pair of 2nd liquid flow prevention walls 6b provided also in the direction outer side. As shown in FIGS. 2 and 3, on the right side of the pair of leakage preventing grooves 7, the first entry portion 8a of the first liquid flow prevention wall 6a and the second entry portion 8b of the second liquid flow prevention wall 6b face each other. Is provided. In the present embodiment, the first entering portion 8a and the second entering portion 8b provided to face each other are formed so as not to contact each other.

本実施形態の生理用ナプキン１の液流れ防止壁６の第２液流れ防止壁６ｂの形状、幅及び高さは、第１液流れ防止壁６ａと同じである。また、第２入り込み部８ｂの防漏溝７の壁面までの距離（高さ）も、第１入り込み部８ａと同じである。図１に示す第２液流れ防止壁６ｂの長さＬ２は、０〜４０ｍｍである。   The shape, width, and height of the second liquid flow prevention wall 6b of the liquid flow prevention wall 6 of the sanitary napkin 1 of the present embodiment are the same as those of the first liquid flow prevention wall 6a. Moreover, the distance (height) to the wall surface of the leak-proof groove 7 of the 2nd penetration part 8b is also the same as the 1st penetration part 8a. The length L2 of the second liquid flow prevention wall 6b shown in FIG. 1 is 0 to 40 mm.

本実施形態の生理用ナプキン１の液流れ防止壁６の第１液流れ防止壁６ａと防漏溝７との関係について、生理用ナプキン１の右側の部分について上述したが、生理用ナプキン１の左側の部分についても同様に構成されている。また、図１に示す生理用ナプキン１における、上述した以外の第１液流れ防止壁６ａ及び第２液流れ防止壁６ｂについても同様である。   Although the relation between the first liquid flow prevention wall 6a of the liquid flow prevention wall 6 of the sanitary napkin 1 of the present embodiment and the leakage prevention groove 7 has been described above with respect to the right side portion of the sanitary napkin 1, The left part is configured similarly. The same applies to the first liquid flow prevention wall 6a and the second liquid flow prevention wall 6b other than those described above in the sanitary napkin 1 shown in FIG.

本実施形態の生理用ナプキン１の液流れ防止壁６は、繊維集合体からなり、内部が実質的に中実である。図３，６に示すように、液流れ防止壁６の内部は、中空となる部分が、出来る限り、無いように形成されており、上面側へ盛り上がる液流れ防止壁６の形状を維持している。第１液流れ防止壁６ａの内部を実質的に中実とすることにより、防漏溝７の壁面から突出しする第１入り込み部８ａの距離ｈ２を高くすることができる。第２液流れ防止壁６ｂの第２入り込み部８ｂについても同様である。   The liquid flow prevention wall 6 of the sanitary napkin 1 of the present embodiment is made of a fiber assembly, and the inside thereof is substantially solid. As shown in FIGS. 3 and 6, the inside of the liquid flow prevention wall 6 is formed so that there is no hollow portion as much as possible, and the shape of the liquid flow prevention wall 6 rising to the upper surface side is maintained. Yes. By making the inside of the first liquid flow preventing wall 6a substantially solid, the distance h2 of the first entering portion 8a protruding from the wall surface of the leakage preventing groove 7 can be increased. The same applies to the second entry portion 8b of the second liquid flow prevention wall 6b.

本実施形態の生理用ナプキン１の防漏溝７は、表面シート２と吸収体４とを固着しており（図３，４参照）、図１に示すように、長手方向の両側部に沿って延びる一対の溝である。一対の防漏溝７は、生理用ナプキン１の長手方向前方の前方領域１ｂに設けられた一対の溝と、装着時に着用者の排泄部に対抗配置される排泄部対向領域１ｃに設けられた一対の溝と、生理用ナプキン１の長手方向後方の後方領域１ａに設けられた一対の溝とからなり、本実施形態の生理用ナプキン１では、それぞれが繋がってリング状の全周防漏溝を形成している。ここで、長手方向前方領域１ｂとは、装着時に、着用者の前側に位置し、着用者の排泄部に対抗配置される排泄部対向領域より前方の領域をいう。   The leak-proof groove 7 of the sanitary napkin 1 of the present embodiment fixes the topsheet 2 and the absorbent body 4 (see FIGS. 3 and 4), and as shown in FIG. It is a pair of groove | channels extended. The pair of leak-proof grooves 7 are provided in the pair of grooves provided in the front area 1b in the front in the longitudinal direction of the sanitary napkin 1 and in the excretory part facing area 1c arranged to be opposed to the excretion part of the wearer when worn. The sanitary napkin 1 according to this embodiment includes a pair of grooves and a pair of grooves provided in the rear region 1a at the rear in the longitudinal direction of the sanitary napkin 1. Forming. Here, the longitudinal direction front region 1b refers to a region located on the front side of the wearer at the time of wearing and in front of the excretion portion-facing region opposed to the excretion portion of the wearer.

本実施形態の生理用ナプキン１の表面材１としては、各種公知の不織布を用いることができる。例えば、カード法により製造された不織布、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、エアースルー不織布、ヒートロール不織布、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。   As the surface material 1 of the sanitary napkin 1 of the present embodiment, various known nonwoven fabrics can be used. For example, various nonwoven fabrics such as a nonwoven fabric, a spunbond nonwoven fabric, a melt blown nonwoven fabric, a spunlace nonwoven fabric, an air-through nonwoven fabric, a heat roll nonwoven fabric, and a needle punched nonwoven fabric manufactured by the card method can be used.

本実施形態の生理用ナプキン１の裏面シート３及び吸収体４としては、従来の吸収性物品等において用いられる各種材料を用いることができる。裏面シート３としては、例えば、水蒸気透過性で且つ液難透過性のフィルムシートである。また吸収体４としては、例えば、フラッフパルプと高吸収性ポリマー粒子との混合物がティッシュペーパーに包被されて構成されている。   As the back sheet 3 and the absorbent body 4 of the sanitary napkin 1 of the present embodiment, various materials used in conventional absorbent articles and the like can be used. The back sheet 3 is, for example, a water vapor permeable and liquid hardly permeable film sheet. Moreover, as the absorber 4, for example, a mixture of fluff pulp and superabsorbent polymer particles is encapsulated in a tissue paper.

本実施形態の生理用ナプキン１の防漏溝７の形成方法としては、公知のエンボス法を利用することができる。例えば、超音波エンボス、熱エンボスが利用できる。本実施形態の防漏溝７は、超音波エンボスにより形成されており、液流れ防止壁６の内部が中空である表面シートを用いた場合、熱エンボス法より入り込み部を潰さないよう形成し易い点で有利である。   As a method for forming the leak-proof groove 7 of the sanitary napkin 1 of the present embodiment, a known embossing method can be used. For example, ultrasonic embossing and thermal embossing can be used. The leak-proof groove 7 of the present embodiment is formed by ultrasonic embossing, and when a surface sheet in which the liquid flow preventing wall 6 is hollow is used, it is easy to form so as not to crush the entering portion by the heat embossing method. This is advantageous.

本実施形態の生理用ナプキン１の液流れ防止壁６の好ましい形成方法としては、図５に示すように、表面シート２を、肌当接面側の上層シート２ａと非肌当接面側の下層シート２ｂとの２枚のシートから形成し、図６に示すように、肌当接面側の上層シート２ａを断面視でΩ状になるように盛り上げ、Ω状の底面部分の肌当接面側の上層シート２ａと非肌当接面側のシート２ｂとを固着することにより形成することができる。肌当接面側の上層シート２ａは、吸収体４の長手方向の両端部を越えて生理用ナプキン１の長手方向の前方領域の端部から後方領域の端部に亘って設けている。液流れ防止壁６の内部を実質的に中実にするためには、肌当接面側の上層シート２ａの目付けは、１５〜４５g／ｍ2であるエアースルー不織布を使用することが好ましい。また、非肌当接面側の下層シート２ｂは、図５に示すように、液流れ防止壁６を形成する生理用ナプキン１の長手方向後方領域１ａにのみ設けられている。非肌当接面側の下層シート２ｂの目付けは、１５〜４５g／ｍ2であるエアースルー不織布を使用することが好ましい。 As a preferred method for forming the liquid flow prevention wall 6 of the sanitary napkin 1 of the present embodiment, as shown in FIG. 5, the top sheet 2 is formed on the skin contact surface side upper layer sheet 2a and the non-skin contact surface side. As shown in FIG. 6, the upper layer sheet 2a on the skin contact surface side is raised so as to be Ω-shaped in a cross-sectional view, and the skin contact of the Ω-shaped bottom surface portion is formed. It can be formed by fixing the upper sheet 2a on the surface side and the sheet 2b on the non-skin contact surface side. The upper layer sheet 2a on the skin contact surface side is provided from the end portion of the sanitary napkin 1 in the longitudinal direction to the end portion of the rear region beyond both ends in the longitudinal direction of the absorbent body 4. In order to make the inside of the liquid flow prevention wall 6 substantially solid, it is preferable to use an air-through nonwoven fabric having a basis weight of the upper layer sheet 2a on the skin contact surface side of 15 to 45 g / m 2 . Further, as shown in FIG. 5, the lower layer sheet 2 b on the non-skin contact surface side is provided only in the longitudinal rear region 1 a of the sanitary napkin 1 that forms the liquid flow prevention wall 6. It is preferable to use an air-through nonwoven fabric having a basis weight of the lower layer sheet 2b on the non-skin contact surface side of 15 to 45 g / m 2 .

上述のように形成した液流れ防止壁６を形成した表面シート２を用いて、従来品と同様に、生理用ナプキンを加工し、最後に、表面シート２と吸収体４とを固着するためのエンボス処理をすることにより、一対の防漏溝７を形成する。その際、液流れ防止壁６の一部が、エンボスにより潰され、第１液流れ防止壁６ａ及び一対の第２液流れ防止壁６ｂを形成し、防漏溝７の内側には、第１液流れ防止壁６ａの第１入り込み部８ａ及び第２液流れ防止壁６ｂの第２入り込み部８ｂを、一対の防漏溝７それぞれの内側に対向して形成する。   Using the topsheet 2 formed with the liquid flow prevention wall 6 formed as described above, the sanitary napkin is processed similarly to the conventional product, and finally the topsheet 2 and the absorbent body 4 are fixed. A pair of leak-proof grooves 7 are formed by embossing. At that time, a part of the liquid flow prevention wall 6 is crushed by embossing to form a first liquid flow prevention wall 6a and a pair of second liquid flow prevention walls 6b. The first entry portion 8a of the liquid flow prevention wall 6a and the second entry portion 8b of the second liquid flow prevention wall 6b are formed to face the inside of each of the pair of leakage preventing grooves 7.

次に上述した本発明の一実施形態の生理用ナプキンを使用した際の作用効果について説明する。
本実施形態の生理用ナプキン１は、図１に示すように、生理用ナプキン１の長手方向後方領域１ａに、５本の液流れ防止壁６が設けられている。これらの５本の液流れ防止壁６それぞれは、肌当接面側に盛り上がっているので、着用者の肌に接しており、着用中に、着用者の肌と生理用ナプキンとの間に空間を生じず、伝い漏れを十分に防止することができる。また、肌当接面側に盛り上がった５本の液流れ防止壁６それぞれは、生理用ナプキン１の幅方向に平行に、一対の防漏溝７間に亘って延びているので、肌を伝ってきた体液を、防漏溝７に導き、横漏れを防止することができる。
特に、本実施形態の生理用ナプキン１は、長手方向後方領域１ａに５本の液流れ防止壁６が設けられているので、就寝中に寝返りをしても着用者の肌と生理用ナプキンとの間に空間を生じず、着用者の肌を伝わって生理用ナプキンの背側から漏れる伝い漏れを防止することができる。 Next, the effect at the time of using the sanitary napkin of one Embodiment of this invention mentioned above is demonstrated.
As shown in FIG. 1, the sanitary napkin 1 of the present embodiment is provided with five liquid flow prevention walls 6 in the longitudinal direction rear region 1 a of the sanitary napkin 1. Since each of these five liquid flow prevention walls 6 is raised on the skin contact surface side, the five liquid flow prevention walls 6 are in contact with the skin of the wearer, and a space is formed between the wearer's skin and the sanitary napkin during wearing. Can be prevented sufficiently. Further, each of the five liquid flow prevention walls 6 swelled on the skin contact surface side extends across the pair of leak-proof grooves 7 in parallel with the width direction of the sanitary napkin 1, so The body fluid thus introduced can be guided to the leak-proof groove 7 to prevent side leakage.
In particular, the sanitary napkin 1 of the present embodiment is provided with five liquid flow prevention walls 6 in the longitudinal rear region 1a, so that the wearer's skin, the sanitary napkin and the sanitary napkin It is possible to prevent transmission leakage from the back side of the sanitary napkin through the wearer's skin.

さらに、防漏溝７により形成される隙間や液流れ防止壁６によって前記隙間が深くなされたとしても、防漏溝７には入り込み部８が形成されているため、液を防漏溝７の底部表面２ａ’’に導きやすくなされている。   Further, even if the gap is deepened by the gap formed by the leak-proof groove 7 or the liquid flow prevention wall 6, the leak-proof groove 7 has the entry portion 8, so that the liquid is leaked from the leak-proof groove 7. It is made easy to guide to the bottom surface 2a ''.

また、本実施形態の生理用ナプキン１は、図１に示すように、一対の防漏溝７間に亘って設けられた第１液流れ防止壁６ａと、更に、一対の防漏溝７それぞれの幅方向外側にも設けられた一対の第２液流れ防止壁６ｂとを有しており、図２，３に示すように、一対の防漏溝７それぞれには、第１液流れ防止壁６ａの第１入り込み部８ａと第２液流れ防止壁６ｂの第２入り込み部８ｂとが防漏溝７の内側に対向して設けられており、対向して設けられた第１入り込み部８ａと第２入り込み部８ｂとが接しないように形成されている。このように、第１入り込み部８ａと第２入り込み部８ｂとが接しないように形成されているので、肌を伝ってきた体液が、入り込み部８により防漏溝７に導かれることを妨げない。
また、多量の体液が、第１液流れ防止壁６ａにより防漏溝７に導かれても、防漏溝７には、第１入り込み部８ａと第２入り込み部８ｂとが対向して設けられているので、一度、体液が防漏溝７に導かれれば、着用者の肌に付着し、再び着用者の肌を伝わり始めるという再伝い流れを防止することができる。 Further, as shown in FIG. 1, the sanitary napkin 1 of the present embodiment includes a first liquid flow prevention wall 6 a provided between a pair of leakage prevention grooves 7, and a pair of leakage prevention grooves 7. And a pair of second liquid flow prevention walls 6b provided also on the outer side in the width direction of the first and second liquid flow prevention walls 6b. As shown in FIGS. The first entry portion 8a of 6a and the second entry portion 8b of the second liquid flow prevention wall 6b are provided to face the inside of the leakage prevention groove 7, and the first entry portion 8a provided to face each other It is formed so as not to contact the second entry portion 8b. Thus, since it forms so that the 1st penetration part 8a and the 2nd penetration part 8b may not contact, it does not prevent that the bodily fluid which transmitted the skin is guide | induced to the leak-proof groove 7 by the penetration part 8. .
In addition, even if a large amount of body fluid is guided to the leakage prevention groove 7 by the first liquid flow prevention wall 6a, the first entry portion 8a and the second entry portion 8b are provided in the leakage prevention groove 7 so as to face each other. Therefore, once the body fluid is guided to the leak-proof groove 7, it is possible to prevent a re-transmission flow that adheres to the wearer's skin and starts to propagate through the wearer's skin again.

本発明の吸収性物品は、上述の実施形態の生理用ナプキンに何ら制限されるものではなく、適宜変更可能である。また、上述の実施形態の生理用ナプキンにおける各構成要件は、本発明の趣旨を損なわない範囲で、適宜組み合わせて実施できる。   The absorbent article of the present invention is not limited to the sanitary napkin of the above-described embodiment, and can be appropriately changed. Moreover, each component in the sanitary napkin of the above-mentioned embodiment can be implemented in combination as appropriate without departing from the spirit of the present invention.

例えば、上述の生理用ナプキン１の実施形態においては、一対の前記防漏溝７それぞれの幅方向外側にも設けられた一対の第２液流れ防止壁６ｂを有しているが、第２液流れ防止壁６ｂを設けなくても良い。   For example, in the embodiment of the sanitary napkin 1 described above, the pair of second liquid flow prevention walls 6b provided on the outer sides in the width direction of the pair of leakage preventing grooves 7 are provided. The flow prevention wall 6b may not be provided.

また、上述の生理用ナプキン１の実施形態において、５本の液流れ防止壁６のそれぞれは、同形・同大であるが、例えば、生理用ナプキン１の長手方向中央から長手方向の後方領域に行くにしたがって、液流れ防止壁６の高さを高くしてもよい。また、生理用ナプキン１の長手方向中央から長手方向の後方領域に行くにしたがって、液流れ防止壁６の幅を広くしてもよい。   Further, in the embodiment of the sanitary napkin 1 described above, each of the five liquid flow prevention walls 6 has the same shape and the same size. For example, from the center in the longitudinal direction of the sanitary napkin 1 to the rear region in the longitudinal direction. You may raise the height of the liquid flow prevention wall 6 as it goes. Further, the width of the liquid flow preventing wall 6 may be increased from the center in the longitudinal direction of the sanitary napkin 1 to the rear region in the longitudinal direction.

また、上述の生理用ナプキン１の実施形態において、５本の液流れ防止壁６のそれぞれは、生理用ナプキン１の幅方向に直線状に並設されているが、図７に示すように、生理用ナプキン１の長手方向の前方領域に向かって広がるＶ字状に形成されていても良い。このように形成すると、図８に示すように、第１入り込み部８ａの頂部と第２入り込み部８ｂの頂部との距離を確保でき、第１入り込み部８ａと第２入り込み部８ｂとが確実に接しないように形成することができ、さらに防漏溝７を挟んで長手方向に互い違いの構造とできるため、伝い漏れの防止や液を防漏壁７の底部に導く機会を高めることができる。   Further, in the embodiment of the sanitary napkin 1 described above, each of the five liquid flow preventing walls 6 is arranged in a straight line in the width direction of the sanitary napkin 1, but as shown in FIG. The sanitary napkin 1 may be formed in a V shape extending toward the front region in the longitudinal direction. If formed in this way, as shown in FIG. 8, the distance between the top of the first entry portion 8a and the top of the second entry portion 8b can be secured, and the first entry portion 8a and the second entry portion 8b can be reliably connected. Since it can be formed so that it does not contact, and it can be made into a structure alternated in the longitudinal direction across the leakage prevention groove 7, it is possible to prevent transmission leakage and increase the chance of introducing the liquid to the bottom of the leakage prevention wall 7.

前記Ｖ字状の液流れ防止壁６’においては、入り込み部８を大きくすることができることから、前述した液流れ防止壁６’の内部が中空である表面シート２であっても熱エンボス法による防漏溝７の形成をおこなうことができる。   In the V-shaped liquid flow prevention wall 6 ′, since the entering portion 8 can be enlarged, even the surface sheet 2 in which the liquid flow prevention wall 6 ′ is hollow is formed by the hot embossing method. The leak-proof groove 7 can be formed.

また、上述の生理用ナプキン１の実施形態において、液流れ防止壁６は、表面シート２を加工して形成しているが、表面シート２とは別個独立した繊維集合体により液流れ防止壁６を形成しても良い。例えば、ポリエチレン、ポリプロピレン、ポリエチレンテレフタレート、ナイロンような合成繊維、レーヨンのような再生セルロース繊維、コットンのような天然繊維又はこれらの混合物等からできたシートを複数枚重ね圧縮成形することにより液流れ防止壁６を形成しても良い。   In the embodiment of the sanitary napkin 1 described above, the liquid flow prevention wall 6 is formed by processing the top sheet 2, but the liquid flow prevention wall 6 is formed by a fiber assembly that is independent of the top sheet 2. May be formed. For example, liquid flow is prevented by compressing and molding multiple sheets made of polyethylene, polypropylene, polyethylene terephthalate, synthetic fibers such as nylon, regenerated cellulose fibers such as rayon, natural fibers such as cotton, or mixtures thereof. The wall 6 may be formed.

また、上述の生理用ナプキン１の実施形態において、液流れ防止壁６を形成するために使用する２枚のシートは、図５に示すように、肌当接面側の上層シート２ａを吸収体４の長手方向の両端部を越えて生理用ナプキン１の長手方向の両端部まで設け、非肌当接面側の下層シート２ｂを液流れ防止壁６を形成する生理用ナプキン１の長手方向後方領域１ａに設けているが、図９に示すように、肌当接面側の上層シート２ａを液流れ防止壁６を形成する生理用ナプキン１の長手方向後方領域１ａにのみ設け、非肌当接面側の下層シート２ｂを吸収体４の長手方向の両端部を越えて生理用ナプキン１の長手方向の前方領域の端部から後方領域の端部に亘って設けても良い。   In the embodiment of the sanitary napkin 1 described above, the two sheets used to form the liquid flow prevention wall 6 are the upper layer sheet 2a on the skin contact surface side as shown in FIG. 4 of the sanitary napkin 1 that extends beyond both ends in the longitudinal direction of the sanitary napkin 1 and extends to both ends in the longitudinal direction of the sanitary napkin 1 to form the liquid flow prevention wall 6 on the lower sheet 2b on the non-skin contact surface side. Although provided in the region 1a, as shown in FIG. 9, the upper layer sheet 2a on the skin contact surface side is provided only in the longitudinal rear region 1a of the sanitary napkin 1 forming the liquid flow prevention wall 6, You may provide the lower surface sheet | seat 2b of a contact surface side across the both ends of the longitudinal direction of the absorber 4 from the edge part of the front direction of the longitudinal direction of the sanitary napkin 1 to the edge part of a back area | region.

また、上述の生理用ナプキン１の実施形態において、液流れ防止壁６は、２枚のシートの内の肌当接面側の上層シート２ａから形成されているが、１枚のシートから形成しても良く、図１０に示すように、３枚のシートの内、２枚の上層シート２ａ，２ａ’’’から形成しても良い。２枚の上層シート２ａ，２ａ’’’から液流れ防止壁６を形成することにより、その内部の密度を高くして中実とすることができるので、上面側へ盛り上がる液流れ防止壁６の形状を、更に維持することができる。   In the embodiment of the sanitary napkin 1 described above, the liquid flow prevention wall 6 is formed from the upper layer sheet 2a on the skin contact surface side of the two sheets, but is formed from one sheet. Alternatively, as shown in FIG. 10, two upper layer sheets 2 a and 2 a ′ ″ out of the three sheets may be formed. By forming the liquid flow prevention wall 6 from the two upper layer sheets 2a and 2a ′ ″, the density of the liquid flow prevention wall 6 can be increased to be solid. The shape can be further maintained.

また、上述の生理用ナプキン１の実施形態において、防漏溝７は、リング状の全周防漏溝を形成しているが、長手方向の両側部に沿って延びる一対の溝であれば良い。   Further, in the embodiment of the sanitary napkin 1 described above, the leak-proof groove 7 forms a ring-shaped all-around leak-proof groove, but may be a pair of grooves extending along both sides in the longitudinal direction.

本発明は、生理用ナプキン以外にも、例えば、パンティーライナー、失禁パッド、展開型の使い捨ておむつ、パンツ型の使い捨ておむつ等の吸収性物品に好適に用いることができる。   In addition to sanitary napkins, the present invention can be suitably used for absorbent articles such as panty liners, incontinence pads, unfolded disposable diapers, and pants-type disposable diapers.

本発明の吸収性物品（生理用ナプキン）の一実施形態の平面図である。It is a top view of one embodiment of an absorptive article (sanitary napkin) of the present invention. 図１の液漏れ防止壁と防漏溝との関係を示す部分拡大平面図である。FIG. 2 is a partially enlarged plan view showing a relationship between a liquid leakage prevention wall and a leakage prevention groove in FIG. 1. 図１の吸収性物品（生理用ナプキン）のＸ１−Ｘ１断面図である。It is X1-X1 sectional drawing of the absorbent article (sanitary napkin) of FIG. 図１の吸収性物品（生理用ナプキン）のＸ２−Ｘ２断面図である。It is X2-X2 sectional drawing of the absorbent article (sanitary napkin) of FIG. 図１の吸収性物品（生理用ナプキン）のＹ−Ｙ断面図である。It is YY sectional drawing of the absorbent article (sanitary napkin) of FIG. 図１の液漏れ防止壁の断面図である。FIG. 2 is a cross-sectional view of a liquid leakage prevention wall in FIG. 1. 本発明の吸収性物品（生理用ナプキン）の他の一実施形態の平面図である。It is a top view of other one embodiment of an absorptive article (sanitary napkin) of the present invention. 図７の液漏れ防止壁と防漏溝との関係を示す部分拡大平面図である。FIG. 8 is a partially enlarged plan view showing a relationship between a liquid leakage prevention wall and a leakage prevention groove in FIG. 7. 本発明の吸収性物品（生理用ナプキン）の他の一実施形態のＹ−Ｙ断面図である。It is YY sectional drawing of other one Embodiment of the absorbent article (sanitary napkin) of this invention. 本発明の吸収性物品（生理用ナプキン）の他の一実施形態の液漏れ防止壁の断面図である。It is sectional drawing of the liquid leakage prevention wall of other one Embodiment of the absorbent article (sanitary napkin) of this invention.

符号の説明Explanation of symbols

１，１’ 吸収性物品（生理用ナプキン）
１ａ 長手方向後方領域、１ｂ 長手方向前方領域、１ｃ 排泄部対向領域
２ 表面シート
２ａ，２ａ’’’ 肌当接面側の上層シート、２ｂ 非肌当接面側の下層シート
２ａ’ 凹部、２ａ’’ 凹部の底部表面
３ 裏面シート
４ 吸水体
４ａ 吸収体の平坦部表面
５ 接合部
６，６’ 液流れ防止壁
６ａ 第１液流れ防止壁、６ｂ 第２液流れ防止壁
７ 防漏溝
８ 入り込み部
８ａ 第１入り込み部、８ｂ 第２入り込み部 1,1 'absorbent article (sanitary napkin)
DESCRIPTION OF SYMBOLS 1a Longitudinal direction rear area | region, 1b Longitudinal direction front area | region, 1c Excretion part opposing area | region 2 Top sheet | seat 2a, 2a '''Upper layer sheet | seat side contact surface side 2b Lower layer sheet | seat 2a' non-skin contact surface side recessed part, 2a '' Bottom surface 3 of the concave portion Back sheet 4 Absorbent body 4a Absorber flat portion surface 5 Joining portions 6, 6 'Liquid flow prevention wall 6a First liquid flow prevention wall, 6b Second liquid flow prevention wall 7 Leak prevention groove 8 Entering part 8a First entering part, 8b Second entering part

Claims (4)

肌当接面側に液透過性の表面シート、非肌当接面側に裏面シート及びこれら両シート間に配された吸収体を具備する縦長の吸収性物品において、
前記表面シートの肌当接面に、肌当接面側に盛り上がり且つ前記吸収性物品の幅方向に延びる液流れ防止壁、及び該表面シートと前記吸収体とを固着し長手方向の両側部に沿って延びる一対の防漏溝を設け、
前記液流れ防止壁は、長手方向後方領域に位置し且つ一対の前記防漏溝間に亘って設けられており、
前記表面シートは、少なくとも２枚のシートで形成されており、
前記液流れ防止壁は、肌当接面側の上層シートで形成され、該上層シートには、幅方向における前記防漏溝において非肌当接面側に窪んだ凹部が形成され、該凹部は、前記防漏溝内側まで延在して形成された入り込み部を有して、該入り込み部における該凹部の溝幅が、該凹部の底部の溝幅よりも幅狭となっており、かつ該凹部の深さ方向における底部表面は、前記吸収体の平坦部表面よりも、深さ方向において、非肌当接面側に窪んでいる吸収性物品。 In a vertically long absorbent article comprising a liquid-permeable surface sheet on the skin contact surface side, a back sheet on the non-skin contact surface side and an absorber disposed between both the sheets,
A liquid flow prevention wall that rises toward the skin contact surface side and extends in the width direction of the absorbent article, and the surface sheet and the absorbent body are fixed to the skin contact surface of the surface sheet and on both sides in the longitudinal direction. Providing a pair of leak-proof grooves extending along,
The liquid flow prevention wall is located in the longitudinal rear region and is provided between the pair of leakage preventing grooves,
The top sheet is formed of at least two sheets,
The liquid flow prevention wall is formed of an upper layer sheet on the skin contact surface side, and the upper layer sheet is formed with a recess recessed toward the non-skin contact surface side in the leakage prevention groove in the width direction. A recess portion extending to the inside of the leakage preventing groove, and the groove width of the recess portion in the recess portion is narrower than the groove width of the bottom portion of the recess portion, and The absorbent article in which the bottom part surface in the depth direction of the concave part is recessed toward the non-skin contact surface side in the depth direction than the flat part surface of the absorber. 前記液流れ防止壁は、更に、一対の前記防漏溝それぞれの幅方向外側にも延在して設けられており、前記入り込み部は、一対の前記防漏溝それぞれの内側に対向して設けられた請求項１に記載の吸収性物品。 The liquid flow prevention wall is further provided to extend outward in the width direction of each of the pair of leakage prevention grooves, and the entry portion is provided to face the inside of each of the pair of leakage prevention grooves. The absorbent article according to claim 1 . 前記液流れ防止壁は、前記吸収性物品の長手方向の前方領域に向かって広がるＶ字状に形成されている請求項１又は２に記載の吸収性物品。 The absorbent article according to claim 1 or 2 , wherein the liquid flow prevention wall is formed in a V shape that extends toward a front region in a longitudinal direction of the absorbent article. 幅方向に延びる前記液流れ防止壁は、間欠的に複数本形成されている請求項１〜３の何れか１項に記載の吸収性物品。 It said liquid flow preventing walls extending in the width direction, the absorbent article of intermittently according to any one of claim 1 to 3 which is a plurality of formation.
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