JP2008080150A - Absorbent article and manufacturing method for it - Google Patents

Absorbent article and manufacturing method for it Download PDF

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JP2008080150A
JP2008080150A JP2007310736A JP2007310736A JP2008080150A JP 2008080150 A JP2008080150 A JP 2008080150A JP 2007310736 A JP2007310736 A JP 2007310736A JP 2007310736 A JP2007310736 A JP 2007310736A JP 2008080150 A JP2008080150 A JP 2008080150A
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absorber
absorbent
region
absorbent article
leak
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JP4801035B2 (en
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Masaki Matsuoka
正樹 松岡
Masaya Fujita
雅也 藤田
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Daio Paper Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an absorbent article, in which an absorber, a bulge height of which on a middle higher part is raised without raising the total thickness, is used and which accelerates the diffusion of the absorbed menstrual blood and so on, increases the absorbing ability and prevents the reversion. <P>SOLUTION: In this absorbent article, an absorber 4 is interposed between a liquid permeable surface sheet 3 and a liquid impermeable back sheet 2, the thickness of the middle higher part 6 on a part of the absorber 4 is increased to the surface side from the standard part absorber 4A, and moreover, a U-shaped groove 8 for preventing leakage is formed outside of the middle higher part 6 at least in a field K for discharged body fluid. The leakage preventing groove 8 is separated by 5-20 mm from the flank of the middle higher part 6, and in the separate region between the leakage preventing groove 8 and the flank of the middle higher part 6, a compressed absorber region 7 is formed, which is continued from the bottom of the leakage preventing groove, and gradually increased in thickness of absorber as it goes toward the flank of the middle higher part 6, and which has lower density than the absorber of the leakage preventing absorber and higher density than the middle higher part. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、経血、おりもの、尿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、詳しくは吸収体の中高部を際立たせることができるとともに、経血やおりもの等の拡散を促進することで吸収能の増大、逆戻りを防止した吸収性物品およびその製造方法に関する。   The present invention relates to absorbent articles such as sanitary napkins, panty liners, incontinence pads, etc. for absorbing menstrual blood, vaginal discharge, urine, and the like. The present invention relates to an absorbent article and a method for producing the same, which prevents the increase in absorption and reversion of the blood by promoting the diffusion of blood, cages, and the like.

従来より、吸収体の一部を使用面側に突出させることにより（以下、中高部という。）、フィット性を向上させ、液漏れを防止した吸収性物品が提供されている。前記中高部を形成する方法としては、パルプの積繊時に吸収体の一部にパルプを他より多く積繊し中高部を形成する方法と、吸収体全体を厚く均一に積繊した後、圧搾により中高部を形成する方法とがある。   2. Description of the Related Art Conventionally, an absorbent article that improves fit and prevents liquid leakage has been provided by projecting a part of the absorbent body to the use surface side (hereinafter referred to as a middle-high section). As the method of forming the middle and high parts, a method of forming a middle and high part by spreading more pulp in a part of the absorbent body than other parts at the time of pulp accumulation, and after thickly and uniformly depositing the entire absorbent body, pressing And a method of forming the middle and high portions.

また、前記中高部の形状を保持するとともに、吸収体に吸収された経血等を堰き止めるために、前記中高部の周囲に線状のエンボス加工（以下、フィットエンボスという。）により凹状の防漏溝を形成することも行われている。
特開平１１−３３０５４号公報 Further, in order to keep the shape of the middle and high portions and to block menstrual blood and the like absorbed by the absorbent body, a concave shape is prevented by linear embossing (hereinafter referred to as fit embossing) around the middle and high portions. Forming leakage grooves has also been performed.
JP-A-11-33054

しかしながら、前記中高部を有する吸収体は、図１０に示されるように、通常は基本厚ｈ0の標準部吸収体５０の表面側に隆起高ｈ1の中高部５１を有する断面形状を成しており、仮に前記中高部の隆起高ｈ1を鎖線で示すように隆起高ｈ2に上げたいとすれば、当然に吸収体の総厚Ｈ1は、基本厚ｈ0に隆起高ｈ2を加算した厚みとなってしまい、吸収体が増厚することになる。 However, as shown in FIG. 10, the absorber having the middle and high portions normally has a cross-sectional shape having the middle and high portions 51 of the raised height h 1 on the surface side of the standard portion absorber 50 having the basic thickness h 0. and which, if desired tentatively raised ridge height h 1 of the domed section the raised height h 2 as shown by a chain line, the total thickness H 1 of course absorber, a raised height h 2 to the basic thickness h 0 The added thickness results in an increase in the thickness of the absorber.

また、中高部５１に排出された経血等の拡散が少ないと、同図に斜線で示される領域に多くの経血等が偏在して滞留することになるため、吸収能の増大が図れないとともに、逆戻りが起こりやすくなるなどの問題がある。   Further, if there is little diffusion of menstrual blood discharged to the middle-high portion 51, a large amount of menstrual blood or the like is unevenly distributed and stays in the area indicated by hatching in FIG. At the same time, there are problems such as reversal.

他方、上記特許文献１では、均一に積繊した吸収体を中高形状を象ったフィットエンボスでパルプを圧搾変形し中高部を形成するとともに、中高部の周囲に防漏溝を設けることが記載されている。しかし、中高部の上面と前記防漏溝の底面との間の高低差が大きくなるため、表面材に破れを生じることがある。また、成形した形状を保持するために、吸収体全体に高い圧力を加え固めるか、表面材の一部を溶融させて固化させるなどの方策が採られることになり、吸収体が硬くなる、或いは表面材の一部が硬化するため肌触りが悪化するなどの問題が発生する。   On the other hand, in the above-mentioned Patent Document 1, the absorber is uniformly deformed and the pulp is squeezed and deformed with fit embossed in the shape of a medium-high shape to form a middle-high portion, and a leak-proof groove is provided around the middle-high portion. Has been. However, since the height difference between the upper surface of the middle and high portions and the bottom surface of the leakage preventing groove is increased, the surface material may be broken. Further, in order to maintain the molded shape, measures such as applying a high pressure to the entire absorber and solidifying, or melting and solidifying a part of the surface material, the absorber becomes hard, or Since a part of the surface material is cured, a problem such as deterioration of the touch occurs.

そこで本発明の主たる課題は、吸収体の総厚を上げずに中高部の隆起高を高くすることが可能であるとともに、吸収された経血等の拡散を促進し吸収能の増大や逆戻りを防止でき、さらに中高部上面と防漏溝底面とに高低差があっても表面材の破れを発生させないなどの利点を有する吸収性物品およびその製造方法を提供することにある。   Therefore, the main problem of the present invention is that it is possible to increase the height of the middle and high portions without increasing the total thickness of the absorber, and to promote the diffusion of absorbed menstrual blood and the like to increase or reverse the absorption capacity. It is another object of the present invention to provide an absorbent article and a method for producing the same that can be prevented and that the surface material is not torn even if there is a difference in height between the upper surface of the middle and high portions and the bottom surface of the leakage prevention groove.

前記課題を解決するための請求項１に係る本発明として、透液性表面シートと、不透液性裏面シートとの間に吸収体が介在され、かつ前記吸収体の一部に表面側に増厚された中高部を有するとともに、少なくとも体液排出部領域において前記中高部の外側に凹状の防漏溝が形成された吸収性物品において、
前記防漏溝は中高部の側部より５〜２０mmだけ離間し、前記防漏溝と前記中高部側部との離間域に前記防漏溝の底部より連続するとともに、前記中高部の側部にかけて漸次吸収体厚を増厚させて形成されるとともに、前記防漏溝部吸収体よりも低密度でかつ前記中高部吸収体より高密度の圧搾吸収体領域を形成したことを特徴とする吸収性物品が提供される。 As the present invention according to claim 1 for solving the above-mentioned problem, an absorber is interposed between the liquid-permeable top sheet and the liquid-impervious back sheet, and a part of the absorber is provided on the surface side. In the absorbent article having a thickened middle-high part and having a concave leakage-proof groove formed outside the middle-high part at least in the body fluid discharge part region,
The leakage prevention groove is separated by 5 to 20 mm from the side part of the middle and high part, and is continuous from the bottom part of the leakage prevention groove to the separation region between the leakage prevention groove and the middle and higher part side part, and the side part of the middle and higher part The absorbent is characterized in that it is formed by gradually increasing the thickness of the absorbent body over and a compressed absorbent region having a density lower than that of the leak-proof groove part absorbent body and a density higher than that of the middle-high part absorbent body is formed. Articles are provided.

請求項２に係る本発明として、前記防漏溝の底面に、防漏溝方向に沿って凹凸状に圧搾差が設けられた請求項１記載の吸収性物品が提供される。   As the present invention according to claim 2, there is provided an absorbent article according to claim 1, wherein a pressing difference is provided in a concavo-convex shape along the leak-proof groove direction on the bottom surface of the leak-proof groove.

請求項３に係る本発明として、前記圧搾吸収体領域は、体液排出部領域を含む側部域にのみ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 the present invention according to claim 3, there is provided the absorbent article according to any one of claims 1 and 2, wherein the compressed absorbent region is formed only in a side region including the body fluid discharge region.

請求項４に係る本発明として、請求項１〜３いずれかに記載の吸収物品の製造方法であって、吸収体の一部に表面側に増厚された中高部を有するように積繊した後、表面側に透液性表面シートを積層し、次いで加圧エンボスロールによる透液性表面シート側からのエンボス加工により、前記防漏溝および圧搾吸収体領域を同時的に形成することを特徴とする吸収性物品の製造方法が提供される。   According to a fourth aspect of the present invention, there is provided a method for manufacturing an absorbent article according to any one of the first to third aspects, wherein the absorbent article is stacked so as to have a middle-high portion thickened on the surface side on a part of the absorbent body. Thereafter, a liquid-permeable surface sheet is laminated on the surface side, and then the leakage-proof groove and the compressed absorbent region are simultaneously formed by embossing from the liquid-permeable surface sheet side by a pressure embossing roll. A method for producing an absorbent article is provided.

請求項５に係る本発明として、前記加圧エンボスロールに形成された圧搾吸収体領域形成用凸部の中高部がわ側縁を、吸収体の積繊後の状態で、中高部上面よりも外側であってかつ中高部側部の傾斜面内または傾斜面の略下端位置に合わせてエンボス加工を施し、前記圧搾吸収体領域を形成するようにする請求項４記載の吸収性物品の製造方法が提供される。   As this invention which concerns on Claim 5, the middle high part of the convex part for pressing absorber area | region formation formed in the said pressurization embossing roll is a lower side edge in the state after fiber pile of an absorber, rather than a middle high part upper surface. The manufacturing method of the absorbent article according to claim 4, wherein the compressed absorbent region is formed by embossing on the outer side and in the inclined surface of the middle-high part side portion or substantially at the lower end position of the inclined surface. Is provided.

以上詳説のとおり本発明によれば、吸収体の総厚を上げずに中高部の隆起高を高くすることが可能であるとともに、吸収された経血等の拡散を促進し吸収能の増大や逆戻りを防止できるようになる。さらには、中高部上面と防漏溝底面とに高低差があっても、中間に形成した圧搾吸収体領域が干渉帯となって表面材に破れを発生させないなどの利点を有するものとなる。   As described above in detail, according to the present invention, it is possible to increase the height of the mid-high portion without increasing the total thickness of the absorber, and to promote the diffusion of absorbed menstrual blood and the like, It becomes possible to prevent reversal. Furthermore, even if there is a height difference between the upper surface of the mid-high portion and the bottom surface of the leak-proof groove, the squeeze absorber region formed in the middle becomes an interference band and has the advantage that the surface material is not torn.

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。
〔参考的形態例〕
図１は本発明の参考的形態例に係る吸収性物品１Ａの一部破断平面図であり、図２は吸収体形状のみを模式的に示した図１のII−II線矢視図である。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[Reference form example]
FIG. 1 is a partially broken plan view of an absorbent article 1A according to a reference embodiment of the present invention, and FIG. 2 is a view taken along the line II-II in FIG. .

吸収性物品１Ａは、主にはパンティライナー、生理用ナプキン、おりものシート、失禁パッドなどの用途に供されるもので、例えば図１に示されるように、不透液性裏面シート２と、透液性表面シート３（以下、単に表面シートともいう。）との間に、吸収体４または同図に示すように、前記吸収体４とこれを囲繞するクレープ紙５とからなる吸収体ユニット６が介在された構造となっている。前記吸収体４の周囲においては、前記不透液性裏面シート２と透液性表面シート３とがホットメルト接着剤等の接着手段によって接合されている。   Absorbent article 1A is mainly used for applications such as panty liners, sanitary napkins, cage sheets, incontinence pads, etc., for example, as shown in FIG. Between the liquid-permeable surface sheet 3 (hereinafter, also simply referred to as a surface sheet), as shown in the figure, the absorber 4 or the absorber unit comprising the absorber 4 and the crepe paper 5 surrounding it. 6 is interposed. Around the absorber 4, the liquid-impervious back sheet 2 and the liquid-permeable top sheet 3 are bonded together by an adhesive means such as a hot melt adhesive.

前記不透液性裏面シート２は、ポリエチレン、ポリプロピレン等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好適に用いられる傾向にある。この遮水・透湿性シート材としては、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が好適に用いられる。   The liquid-impervious back sheet 2 is made of a sheet material having at least water shielding properties, such as polyethylene and polypropylene. In addition to this, a laminated nonwoven fabric obtained by laminating a nonwoven fabric on a polyethylene sheet or the like, and further a waterproof film interposed. After substantially ensuring liquid impermeability, a nonwoven fabric sheet (in this case, a waterproof film and a nonwoven fabric constitute a liquid impervious back sheet) or the like can be used. In recent years, those having moisture permeability tend to be suitably used from the viewpoint of preventing stuffiness. The water- and moisture-permeable sheet material is a microporous material obtained by melting and kneading an inorganic filler in an olefin-based resin such as polyethylene or polypropylene to form a sheet, and then stretching in a uniaxial or biaxial direction. A sheet is preferably used.

前記吸収体４としては、体液を吸収・保持し得るものであれば良く、通常はフラッフ状パルプ中に吸収性ポリマー粉末を混在したものが吸収機能および価格の点から好適に使用される。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。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によって囲繞するのが望ましい。また、吸収体４の平面形状は、図示されるように、小判状としてもよいし、或いは股間部への当たりを和らげるためにフィットカット形状（ひょうたん形状）としてもよい。   The absorbent body 4 is not particularly limited as long as it can absorb and retain body fluids. In general, a fluffy pulp mixed with absorbent polymer powder is preferably used from the viewpoint of absorption function and price. 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. It is desirable that the absorbent body 4 is surrounded by crepe paper 5 in order to maintain the shape and quickly diffuse menstrual blood and to prevent the menstrual blood once absorbed from returning. Moreover, the planar shape of the absorber 4 may be an oval shape as illustrated, or may be a fit cut shape (a gourd shape) to soften the contact with the crotch portion.

一方、本吸収性物品１Ａにおける表面シート３としては、無孔または有孔の不織布や多孔性プラスチックシートなどが好適が用いられる。前記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る。また、融点の高い繊維を芯とし融点の低い繊維を鞘とした芯鞘型繊維やサイド−バイ−サイド型繊維、分割型繊維等の複合繊維も好適に用いることもできる。   On the other hand, as the surface sheet 3 in the present absorbent article 1A, a non-porous or perforated nonwoven fabric or a porous plastic sheet is preferably used. Examples of the material fibers constituting the non-woven fabric include synthetic fibers such as olefins such as polyethylene and polypropylene, polyesters and polyamides, recycled fibers such as rayon and cupra, and natural fibers such as cotton. In addition, composite fibers such as a core-sheath fiber, a side-by-side fiber, and a split fiber that have a fiber having a high melting point as a core and a fiber having a low melting point as a sheath can also be suitably used.

加工法については、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、ドレープ性に富む点で優れ、サーマルボンド法は嵩高でソフトである点で優れている。また、エンボス加工が施しやすい点では合成繊維からなる不織布が好適に使用される。   Regarding the processing method, a nonwoven fabric obtained by an appropriate processing method such as a spunlace method, a spunbond method, a thermal bond method, a melt blown method, or a needle punch method can be used. Among these processing methods, the spunlace method is excellent in terms of flexibility and drapeability, and the thermal bond method is excellent in terms of being bulky and soft. Moreover, the nonwoven fabric which consists of synthetic fibers is used suitably at the point which is easy to give embossing.

前記吸収体４の表面側には、図２に示されるように、吸収体４の一部に対し、標準部吸収体４Ａ（後述の防漏溝８および圧搾吸収体領域７以外の一般部分）よりも表面側に増厚された中高部６を有するとともに、少なくとも体液排出部領域Ｋにおいて前記中高部６の外側に凹状の防漏溝８が形成されている。前記防漏溝８は、中高部６の側部Ｐより所定距離だけ外側に離間し、前記防漏溝８と前記中高部側部Ｐとの間には前記防漏溝部吸収体よりも厚くかつ標準部吸収体４Ａよりも薄く段状に形成されるとともに、前記防漏溝部吸収体よりも低密度でかつ中高部吸収体より高密度の圧搾吸収体領域７が形成されている。   On the surface side of the absorbent body 4, as shown in FIG. 2, with respect to a part of the absorbent body 4, the standard part absorbent body 4 </ b> A (general part other than the leakage prevention groove 8 and the compressed absorbent body region 7 described later) In addition to the middle-high portion 6 having a thickness increased further on the surface side, at least in the body fluid discharge portion region K, a concave leak-proof groove 8 is formed outside the middle-high portion 6. The leakage prevention groove 8 is spaced outward by a predetermined distance from the side portion P of the middle and high portion 6, and is thicker than the leakage prevention groove portion absorber between the leakage prevention groove 8 and the middle and higher portion side portion P. While being formed thinner and stepwise than the standard part absorbent body 4A, a compressed absorbent region 7 having a lower density than the leak-proof groove part absorbent body and a higher density than the middle-high part absorbent body is formed.

以上のように構成される本吸収性物品１Ａでは、中高部６の周辺領域に標準部吸収体４Ａよりも薄肉の圧搾吸収体領域７を形成したため、中高部６の隆起高を前記圧搾吸収体領域７の上面から中高部６上面までの距離ｈ2とすることができ、吸収体４の総厚Ｈを増厚することなく、標準部吸収体４Ａの上面から中高部６上面までの寸法ｈ1（通常はこのｈ1寸法が隆起高となる。）よりも大きく取ることができ、中高部６を際立たせることが可能となる。 In the present absorbent article 1 </ b> A configured as described above, since the compressed absorbent region 7 having a thinner wall than the standard absorbent body 4 </ b> A is formed in the peripheral region of the mid-high portion 6, the raised height of the mid-high portion 6 is set to the compressed absorbent body. The distance h 2 from the upper surface of the region 7 to the upper surface of the middle-high portion 6 can be set, and the dimension h from the upper surface of the standard portion absorber 4A to the upper surface of the middle-high portion 6 can be obtained without increasing the total thickness H of the absorber 4. 1 (usually, this h 1 dimension is the height of the bulge), and the middle-high portion 6 can be made to stand out.

また、前記防漏溝８、圧搾吸収体領域７および中高部６の密度（吸収体の繊維密度）は、前記防漏溝８部分が最も高く、前記圧搾吸収体領域７部分の吸収体が中高部６の吸収体よりも相対的に高くなっている。その結果、中高部６に排出された経血等の体液９が圧搾吸収体領域７側に拡散するようになるため、吸収能の増大が図れるとともに、体液の拡散により逆戻りも防止できるようになる。なお、圧搾吸収体領域７まで拡散により移動した体液９は、防漏溝８位置で堰き止められ、これ以上側方には移動しない。   Further, the density of the leak-proof groove 8, the compressed absorbent region 7 and the middle-high portion 6 (fiber density of the absorbent body) is highest in the leak-proof groove 8 portion, and the absorber in the compressed absorbent region 7 portion is medium-high. It is relatively higher than the absorber of the part 6. As a result, the body fluid 9 such as menstrual blood discharged to the middle-high part 6 is diffused to the compressed absorbent region 7 side, so that the absorption capacity can be increased and the reverse movement can be prevented by the diffusion of the body fluid. . In addition, the bodily fluid 9 that has moved to the compressed absorbent region 7 by diffusion is blocked at the position of the leak-proof groove 8 and does not move further to the side.

さらに、後述の如く前記防漏溝８および圧搾吸収体領域７は加圧エンボスロール１０による透液性表面シート３側からのエンボス加工により形成されるが、中高部６と防漏溝８との間に干渉帯となる圧搾吸収体領域７が存在するため、エンボス付与時に表面シート３の破れも同時に防止できるようになる。   Further, as described later, the leak-proof groove 8 and the compressed absorbent region 7 are formed by embossing from the liquid-permeable surface sheet 3 side by the pressure embossing roll 10. Since the compressed absorbent region 7 serving as an interference band exists between them, the topsheet 3 can be prevented from being broken at the same time when embossing is applied.

前記防漏溝８の溝幅Ｓ1は、１〜５mm、好ましくは２〜３mmとされる。溝幅Ｓ1が１mm未満では防漏溝の本来の目的である経血の拡がり抑制と、吸収体を固定することによるヨレ防止機能が発揮されない。また、溝幅Ｓ1が５mmを超える場合には固化した防漏溝８の剛性のため吸収体４に硬さが現れ、装着感を損なうようになる。 The groove width S 1 of the leak-proof groove 8 is 1 to 5 mm, preferably 2 to 3 mm. When the groove width S 1 is less than 1 mm, the function of preventing the spread of menstrual blood, which is the original purpose of the leak-proof groove, and the function of preventing twisting by fixing the absorber are not exhibited. On the other hand, when the groove width S 1 exceeds 5 mm, the absorber 4 becomes hard due to the rigidity of the solid leak-proof groove 8 and the feeling of wearing is impaired.

前記圧搾吸収体領域７の幅寸法Ｓ2は、少なくとも２mm以上、好ましくは５mm以上とされる。少なくとも２mm以上の領域がないと、中高部６を際立たせることが困難になるとともに、実際上のフィット効果も期待出来ない。なお、前記幅寸法Ｓ2の最大寸法は概ね２５mm未満、好ましくは２０mm未満とされる。 The width S 2 of the compressed absorbent region 7 is at least 2 mm, preferably 5 mm. Without an area of at least 2 mm or more, it becomes difficult to make the middle and high portions 6 stand out, and an actual fitting effect cannot be expected. The maximum dimension is generally less than 25mm of the width S 2, and preferably less than 20 mm.

また、前記防漏溝８の底面と前記圧搾吸収体領域７上面との高低差ｈ3は、０．１〜３．０mmが好ましく、０．３〜１．０mmがより好ましい。高低差ｈ3が０．１mm未満の場合には防漏溝８と圧搾吸収体領域７との境界が明確で無くなり、中高部６を際立てる機能および体液拡散機能の一方側の機能しか果たせなくなる。また、高低差ｈ3が３．０mmを超えると、エンボス付与時に表面シート３に破れを生じる可能性があり好ましくない。 Further, the height difference h 3 bottom and with the compressed absorbent body region 7 the upper surface of the anti Momizo 8, preferably 0.1 to 3.0 mm, 0.3 to 1.0 mm is more preferable. When the height difference h 3 is less than 0.1 mm, the boundary between the leak-proof groove 8 and the squeezed absorbent body region 7 becomes unclear, and only the function of concentrating the middle-high part 6 and the function of diffusing the body fluid can be performed. . Further, if the height difference h 3 exceeds 3.0 mm, the surface sheet 3 may be torn during embossing, which is not preferable.

前記中高部６の幅寸法は、女性の股間幅の平均寸法を考慮し、前記中高部６の上面幅ＤUを１５〜４０mm、中高部６の底幅ＤLを２０〜６０mmとするのがよい。 Width of the domed portion 6, taking into account the average size of the crotch width of the female, the upper surface width D U of the domed section 6 15 to 40 mm, a bottom width D L of the domed portion 6 to the 20~60mm Good.

前記防漏溝８と圧搾吸収体領域７とを吸収体４に形成するには、図３に示されるように、ライン上を搬送される吸収体４の上面側に透液性表面シート３を積層した後、加圧エンボスロール１０と、アンビルロール１１とを所定の間隙を空けた状態で対向配置したエンボス加工装置１２を通過させることにより同時的に形成するのが望ましい。   In order to form the said leak-proof groove 8 and the compression absorber area | region 7 in the absorber 4, as FIG. 3 shows, the liquid-permeable surface sheet 3 is provided on the upper surface side of the absorber 4 conveyed on a line. After the lamination, it is desirable that the pressure embossing roll 10 and the anvil roll 11 are simultaneously formed by passing through an embossing device 12 arranged opposite to each other with a predetermined gap therebetween.

前記加圧エンボスロール１０は、詳細には図４に示されるように、ロール表面に前記防漏溝８および圧搾吸収体領域７の形状に対応する凸部１３が１または複数形成された加圧ロールが使用される。この場合、前記凸部１３は防漏溝形成用凸部１３Ａと圧搾吸収体領域形成用凸部１３Ｂとが隣接して一体的に形成されたものとなっている。この加圧エンボスロール１０の温度は、透液性表面シート３の融点および圧搾時間にもよるが、前記透液性表面シート３が溶融固化しない条件の下で、好ましくは５０〜２００℃、より好ましくは６０〜１５０℃とするのがよい。   As shown in detail in FIG. 4, the pressurization embossing roll 10 is a pressurization in which one or a plurality of convex portions 13 corresponding to the shapes of the leak-proof groove 8 and the compressed absorbent region 7 are formed on the roll surface. A roll is used. In this case, the convex portion 13 is formed by integrally forming a leakage preventing groove forming convex portion 13A and a compressed absorber region forming convex portion 13B adjacent to each other. The temperature of the pressure embossing roll 10 depends on the melting point and pressing time of the liquid-permeable surface sheet 3, but is preferably 50 to 200 ° C. under the condition that the liquid-permeable surface sheet 3 does not melt and solidify. Preferably it is 60-150 degreeC.

また、前記防漏溝形成用凸部１３Ａの長手方向形状は、図５(A)に示されるように、防漏溝方向に沿って平面状の凸部としてよいが、図５(B)に示されるように、凹凸状とし、防漏溝８の底面に凹凸状の圧搾差を設けるようにしてもよい。凹凸状の圧搾差を設ける場合には、表面シート３を伝わって防漏溝８内に流入した体液が密度の高い高圧搾部側から素早く吸収されるようになる。   Further, the longitudinal shape of the leakage preventing groove forming convex portion 13A may be a planar convex portion along the leakage preventing groove direction as shown in FIG. 5 (A). As shown, it may be uneven, and an uneven pressing difference may be provided on the bottom surface of the leak-proof groove 8. In the case of providing an uneven pressing difference, the body fluid that has flowed through the top sheet 3 and has flowed into the leak-proof groove 8 is quickly absorbed from the high-pressure pressing portion side having a high density.

一方、エンボス付与位置は、中高部６を際立たせるとともに、中高部６の吸収体の硬化を防止するためには、図６に示されるように、前記加圧エンボスロール１０に形成された圧搾吸収体領域形成用凸部１３Ｂの中高部がわ側縁ＲIを、吸収体の積繊後の状態で、中高部６上面よりも外側であって、かつ中高部６の傾斜面内の位置に合わせてエンボスを付与するのが望ましい。また、前記中高部がわ側縁ＲIを中高部６上面よりも外側であって、かつ傾斜面の下端位置に合わせてエンボスを付与するようにしてもよい。
〔本発明形態例〕
上記例では防漏溝８と圧搾吸収体領域７とは段状に形成したが、図７に示されるように、防漏溝８の底部から連続して傾斜状に、すなわち中高部６側に向かって漸次吸収体厚を増厚させるように形成してもよい。この場合の加圧エンボスロール１０の凸部形状１３'は、図８(A)(B)に示される形状のものが使用される。図中、(A)は圧搾吸収体領域７を防漏溝８の底部から連続して傾斜状に形成する場合の凸部形状であり、(B)はエンボス形成方向に沿って凹凸状の圧搾差を設ける場合の凸部形状である。 On the other hand, the embossing position makes the middle and high portions 6 stand out, and in order to prevent the absorbent body of the middle and high portions 6 from being cured, as shown in FIG. the domed section I side edge R I of the body region forming projection 13B, in the state of the product繊後absorber, an outer than the domed section 6 top, and the position of the inclined surface of the domed portion 6 It is desirable to give embossing together. Further, the domed section of the I side edge R I an outer than the domed section 6 top, and may be given an embossed in accordance with the lower end position of the inclined surface.
[Examples of the present invention]
In the above example, the leak-proof groove 8 and the squeeze absorber region 7 are formed in a step shape, but as shown in FIG. You may form so that an absorber thickness may be gradually increased toward it. In this case, as the convex shape 13 ′ of the pressure embossing roll 10, the shape shown in FIGS. 8A and 8B is used. In the figure, (A) is a convex shape when the compressed absorbent region 7 is formed in an inclined shape continuously from the bottom of the leak-proof groove 8, and (B) is a convex-concave shape along the embossing direction. This is a convex shape when a difference is provided.

ところで、上記吸収性物品の例では、圧搾吸収体領域７を中高部６の両側にかつ長手方向に沿って略均等幅で形成したが、図９に示されるように、体液排出部領域Ｋを含む側部域にのみ圧搾吸収体領域７を形成するようにしてもよい。図９に示される吸収性物品１Ｂの他の構造については、図１の吸収性物品１Ａと同様であるため、同符号を付して説明は省略する。   By the way, in the example of the said absorbent article, although the compression absorber area | region 7 was formed in the both sides of the middle-high part 6 and the substantially equal width along the longitudinal direction, as FIG. 9 shows, the bodily fluid discharge part area | region K is formed. You may make it form the compression absorber area | region 7 only in the side part area | region to include. The other structure of the absorbent article 1B shown in FIG. 9 is the same as that of the absorbent article 1A shown in FIG.

本発明の参考的形態例に係る吸収性物品１Ａの一部破断平面図である。It is a partially broken plan view of an absorbent article 1A according to a reference embodiment of the present invention. 吸収体形状のみを模式的に示した図１のII−II線矢視図である。It is the II-II arrow directional view of FIG. 1 which showed only an absorber shape typically. 防漏溝８及び圧搾吸収体領域７の形成要領を示す概略図である。It is the schematic which shows the formation point of the leak-proof groove 8 and the compression absorber area | region 7. FIG. 図３のIV−IV線矢視図である。It is the IV-IV line arrow directional view of FIG. (A)及び(B)は共に加圧エンボスロール１０に形成した凸部１３Ａ、１３Ｂの形状例を示す図である。(A) And (B) is a figure which shows the example of a shape of convex part 13A, 13B formed in the pressurization embossing roll 10 together. 圧搾吸収体領域７の形成位置を示す図である。It is a figure which shows the formation position of the compression absorber area | region 7. FIG. 本発明に係る圧搾吸収体領域７の形成態様を示す吸収体要部断面図である。It is an absorber principal part sectional drawing which shows the formation aspect of the pressing absorber area | region 7 which concerns on this invention. (A)及び(B)は共に、本発明に係る圧搾吸収体領域７の例を形成するための凸部形状例を示す図である。(A) And (B) is a figure which shows the example of a convex part shape for forming the example of the pressing absorber area | region 7 which concerns on this invention. 他の防漏溝８及び圧搾吸収体領域７の形成態様を示す吸収性物品１Ｂの一部破断平面図である。It is a partially broken top view of the absorbent article 1B which shows the formation aspect of the other leak-proof groove 8 and the compression absorber area | region 7. FIG. 従来の中高部形成要領を示す吸収体模式断面図である。It is a absorber schematic cross section which shows the conventional middle-high part formation point.

符号の説明Explanation of symbols

１…吸収性物品、２…不透液性裏面シート、３…透液性表面シート、４…吸収体、５…クレープ紙、６…中高部、７…圧搾吸収体領域、８…防漏溝、１０…加圧エンボスロール、１１…アンビルロール   DESCRIPTION OF SYMBOLS 1 ... Absorbent article, 2 ... Liquid-impermeable back sheet, 3 ... Liquid-permeable surface sheet, 4 ... Absorber, 5 ... Crepe paper, 6 ... Middle-high part, 7 ... Squeeze absorber area | region, 8 ... Leak-proof groove 10 ... Pressurized embossing roll, 11 ... Anvil roll

Claims (5)

透液性表面シートと、不透液性裏面シートとの間に吸収体が介在され、かつ前記吸収体の一部に表面側に増厚された中高部を有するとともに、少なくとも体液排出部領域において前記中高部の外側に凹状の防漏溝が形成された吸収性物品において、
前記防漏溝は中高部の側部より５〜２０mmだけ離間し、前記防漏溝と前記中高部側部との離間域に前記防漏溝の底部より連続するとともに、前記中高部の側部にかけて漸次吸収体厚を増厚させて形成されるとともに、前記防漏溝部吸収体よりも低密度でかつ前記中高部吸収体より高密度の圧搾吸収体領域を形成したことを特徴とする吸収性物品。 An absorbent body is interposed between the liquid-permeable surface sheet and the liquid-impermeable back sheet, and a part of the absorbent body has a middle-high portion thickened on the surface side, and at least in the body fluid discharge section region In the absorbent article in which a concave leak-proof groove is formed on the outside of the middle-high part,
The leakage prevention groove is separated by 5 to 20 mm from the side part of the middle and high part, and is continuous from the bottom part of the leakage prevention groove to the separation region between the leakage prevention groove and the middle and higher part side part, and the side part of the middle and higher part The absorbent is characterized in that it is formed by gradually increasing the thickness of the absorbent body over and a compressed absorbent region having a density lower than that of the leak-proof groove part absorbent body and a density higher than that of the middle-high part absorbent body is formed. Goods. 前記防漏溝の底面に、防漏溝方向に沿って凹凸状に圧搾差が設けられた請求項１記載の吸収性物品。   The absorbent article of Claim 1 by which the pressing difference was provided in the uneven | corrugated shape in the bottom face of the said leak-proof groove along the leak-proof groove direction. 前記圧搾吸収体領域は、体液排出部領域を含む側部域にのみ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 absorbent article according to any one of claims 1 and 2, wherein the compressed absorbent region is formed only in a side region including the body fluid discharge region. 請求項１〜３いずれかに記載の吸収物品の製造方法であって、吸収体の一部に表面側に増厚された中高部を有するように積繊した後、表面側に透液性表面シートを積層し、次いで加圧エンボスロールによる透液性表面シート側からのエンボス加工により、前記防漏溝および圧搾吸収体領域を同時的に形成することを特徴とする吸収性物品の製造方法。   It is a manufacturing method of the absorbent article in any one of Claims 1-3, Comprising: After having piled up so that it may have the middle high part thickened by the surface side in a part of absorber, the liquid-permeable surface on the surface side A method for producing an absorbent article, comprising: laminating sheets, and then simultaneously forming the leakage-proof groove and the compressed absorbent region by embossing from the liquid-permeable surface sheet side with a pressure embossing roll. 前記加圧エンボスロールに形成された圧搾吸収体領域形成用凸部の中高部がわ側縁を、吸収体の積繊後の状態で、中高部上面よりも外側であってかつ中高部側部の傾斜面内または傾斜面の略下端位置に合わせてエンボス加工を施し、前記圧搾吸収体領域を形成するようにする請求項４記載の吸収性物品の製造方法。   The middle and high parts of the convex part for forming the compressed absorbent region formed on the pressure embossing roll is the outer side of the upper side of the middle and high part and the middle and high part side part in the state after the absorbent fiber is stacked. The manufacturing method of the absorbent article of Claim 4 which embosses in accordance with the substantially lower end position in the inclined surface of this, and forms the said compression absorber area | region.
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