JP2022046325A - Body fluid absorption sheet - Google Patents

Body fluid absorption sheet Download PDF

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Publication number
JP2022046325A
JP2022046325A JP2020152307A JP2020152307A JP2022046325A JP 2022046325 A JP2022046325 A JP 2022046325A JP 2020152307 A JP2020152307 A JP 2020152307A JP 2020152307 A JP2020152307 A JP 2020152307A JP 2022046325 A JP2022046325 A JP 2022046325A
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Prior art keywords
body fluid
fibers
hydrophilic
fabric layer
fiber
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JP2020152307A
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Japanese (ja)
Inventor
耕 出谷
Ko Idetani
明寛 木村
Akihiro Kimura
友美 衛藤
Tomomi Eto
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Unicharm Corp
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Unicharm Corp
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Priority to JP2020152307A priority Critical patent/JP2022046325A/en
Priority to PCT/JP2021/031590 priority patent/WO2022054613A1/en
Priority to CN202180061572.9A priority patent/CN116075417A/en
Publication of JP2022046325A publication Critical patent/JP2022046325A/en
Pending legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F13/00—Bandages or dressings; Absorbent pads
    • A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
    • A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
    • A61F13/512—Topsheet, i.e. the permeable cover or layer facing the skin characterised by its apertures, e.g. perforations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4374—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece using different kinds of webs, e.g. by layering webs

Abstract

To provide a body fluid absorption sheet which is high in absorption performance (sweat absorption performance, absorption rate), high in liquid dispersibility, and is unlikely to be re-wetted.SOLUTION: A body fluid absorption sheet 2 has a first surface 2S1 and a second surface 2S2. The body fluid absorption sheet includes an unwoven fabric layer 2a which includes a plurality of hot-melt fibers 20 mutually hot-melted and one surface of which configures a first surface; and a hydrophilic fiber layer 2b which includes a plurality of hydrophilic fibers 30, one surface of which is adjacent to the other surface of the unwoven fabric layer, and the other surface of which configures a second surface. A part of the plurality of hydrophilic fibers of the hydrophilic fiber layer is exposed to the first surface through the respective nonwoven fabric layers respectively.SELECTED DRAWING: Figure 1

Description

本発明は、体液吸収用シートに関する。 The present invention relates to a body fluid absorbing sheet.

吸収性物品の表面シートのような体液吸収用シートが知られている。例えば、特許文献１には、第１面と第２面とを有し、セルロース系繊維から形成された織物と、織物の第１面に交絡によって一体化された繊維ウェブと、を備える吸収性物品用の透液性シートが開示されている。この透液性シートでは、繊維ウェブの構成繊維が、織物の構成糸と構成糸との間（網目）を通って、織物の第２面とほぼ面一又はそれよりも厚さ方向の外側へ延在している。 A body fluid absorbing sheet such as a surface sheet of an absorbent article is known. For example, Patent Document 1 has an absorbent surface having a first surface and a second surface, and includes a woven fabric formed of cellulosic fibers and a fiber web integrated with the first surface of the woven fabric by entanglement. Liquid permeable sheets for articles are disclosed. In this liquid-permeable sheet, the constituent fibers of the fiber web pass between the constituent yarns of the woven fabric (mesh) and are substantially flush with the second surface of the woven fabric or outward in the thickness direction. It is postponed.

特開２０２０－７１９号公報Japanese Unexamined Patent Publication No. 2020-719

特許文献１の透液性シートでは、織物を構成する構成糸が、セルロース系繊維を撚って形成された撚糸である。したがって、構成糸には、セルロース系繊維同士の間の空隙が少ないため、体液を吸収（透過させる際の一時的な吸収を含む）するための容量が少なくなる。それゆえ、透液性シートの肌側の表面に体液（例示：尿、経血、汗）が排出されたとき、構成糸内に体液を吸収するのに時間が掛かり易くなる。よって、透液性シート全体としても体液を吸収するのに時間が掛かり易くなる。 In the liquid-permeable sheet of Patent Document 1, the constituent yarn constituting the woven fabric is a twisted yarn formed by twisting cellulosic fibers. Therefore, since the constituent yarn has few voids between the cellulosic fibers, the capacity for absorbing the body fluid (including temporary absorption at the time of permeation) is reduced. Therefore, when the body fluid (eg, urine, menstrual blood, sweat) is discharged to the skin-side surface of the liquid-permeable sheet, it tends to take time to absorb the body fluid in the constituent threads. Therefore, it tends to take time to absorb the body fluid even in the liquid permeable sheet as a whole.

また、透液性シートでは、保水性のセルロース系繊維の撚糸が、第２面、すなわち肌側の表面に存在している。したがって、透液性シートに体液が吸収されても、肌側の表面のセルロース系繊維の撚糸に保持された体液により、表面がべたべたした状態になり易く、そのリウェットが生じ易くなる。 Further, in the liquid-permeable sheet, the twisted yarn of the water-retaining cellulosic fiber is present on the second surface, that is, the surface on the skin side. Therefore, even if the body fluid is absorbed by the liquid-permeable sheet, the surface tends to become sticky due to the body fluid held by the twisted yarns of the cellulosic fibers on the surface on the skin side, and the rewetting tends to occur.

本発明の目的は、表面に排出された体液を吸収するのに掛かる時間が短く、体液が表面から素早く捌け、体液が表面に戻り難い体液吸収用シート、すなわち、吸収性能（吸汗性、吸収速度）が高く、液捌け性が高く、リウェットし難い体液吸収用シートを提供することにある。 An object of the present invention is a body fluid absorbing sheet in which the time required to absorb the body fluid discharged to the surface is short, the body fluid is quickly separated from the surface, and the body fluid is difficult to return to the surface, that is, the absorption performance (sweat absorption, absorption speed). ) Is high, and it is intended to provide a body fluid absorbing sheet that has high liquid handling property and is difficult to rewet.

本発明の一の態様は次のとおりである。（１）第１面と第２面とを有する体液吸収用シートであって、互いに熱融着された複数の熱融着性繊維を含み、一方の面が前記第１面を構成する不織布層と、複数の親水性繊維を含み、一方の面が前記不織布層の他方の面に隣接し、他方の面が前記第２面を構成する親水性繊維層と、を備え、前記親水性繊維層の前記複数の親水性繊維の一部は、それぞれ前記不織布層を貫通して前記第１面に露出している、体液吸収用シート。 One aspect of the present invention is as follows. (1) A non-woven fabric layer having a first surface and a second surface, which contains a plurality of heat-sealing fibers heat-sealed to each other, and one surface constitutes the first surface. A hydrophilic fiber layer containing a plurality of hydrophilic fibers, one surface adjacent to the other surface of the nonwoven fabric layer, and the other surface constituting the second surface. A sheet for absorbing body fluid, wherein a part of the plurality of hydrophilic fibers of the above penetrates the nonwoven fabric layer and is exposed on the first surface.

本発明の他の態様は次のとおりである。（２）第１面と第２面とを有する体液吸収用シートの製造方法であって、互いに熱融着された複数の熱融着性繊維を含み、一方の面が前記第１面を構成する不織布層を準備する工程と、メッシュ状の支持体の表面に前記不織布層の一方の面が接し、前記不織布層の他方の面に複数の親水性繊維を含む繊維ウェブの一方の面が接するように、前記支持体に前記不織布層及び前記繊維ウェブを載置する載置工程と、前記不織布層上に載置された前記繊維ウェブの他方の面に向かって水流を噴射し、前記複数の親水性繊維を前記複数の熱融着性繊維に交絡させて、前記複数の親水性繊維を含み、一方の面が前記不織布層の他方の面に隣接し、他方の面が前記第２面を構成する親水性繊維層を形成する交絡工程と、を備え、前記交絡工程において、前記親水性繊維層の前記複数の親水性繊維の一部は、それぞれ前記不織布層を貫通して前記第１面に露出する、体液吸収用シートの製造方法。 Other aspects of the present invention are as follows. (2) A method for manufacturing a body fluid absorbing sheet having a first surface and a second surface, which comprises a plurality of heat-sealing fibers heat-fused to each other, and one surface constitutes the first surface. One side of the non-woven layer is in contact with the surface of the mesh-like support, and one side of the fiber web containing a plurality of hydrophilic fibers is in contact with the other side of the non-woven layer. As described above, in the mounting step of placing the non-woven fabric layer and the fiber web on the support, a water stream is jetted toward the other surface of the fiber web placed on the non-woven fabric layer, and the plurality of said. The hydrophilic fibers are entangled with the plurality of heat-sealing fibers to contain the plurality of hydrophilic fibers, one surface of which is adjacent to the other surface of the non-woven layer and the other surface of the second surface. It comprises an entanglement step of forming a constituent hydrophilic fiber layer, and in the entanglement step, a part of the plurality of hydrophilic fibers of the hydrophilic fiber layer penetrates the non-woven layer and the first surface thereof. A method of manufacturing a sheet for absorbing body fluid that is exposed to the air.

本発明によれば、表面に排出された体液を吸収するのに掛かる時間が短く、体液が表面から素早く捌け、体液が表面に戻り難い体液吸収用シート、すなわち吸収性能（吸汗性、吸収速度）が高く、液捌け性が高く、リウェットし難い体液吸収用シートを提供できる。 According to the present invention, it takes a short time to absorb the body fluid discharged to the surface, the body fluid is quickly separated from the surface, and the body fluid is hard to return to the surface, that is, the absorption performance (sweat absorption, absorption rate). It is possible to provide a body fluid absorbing sheet that is highly resistant, has high liquid handling properties, and is difficult to rewet.

実施形態に係る体液吸収用シートを用いた吸収性物品の構成例を示す平面図である。It is a top view which shows the structural example of the absorbent article using the body fluid absorption sheet which concerns on embodiment. 図１のＩＩ－ＩＩ線に沿う断面図である。It is sectional drawing which follows the II-II line of FIG. 実施形態に係る体液吸収用シートの構成例を示す平面図及び断面図である。It is a plan view and sectional drawing which shows the structural example of the body fluid absorption sheet which concerns on embodiment. 実施形態に係る体液吸収用シートの製造方法で用いる支持体の構成例を示す平面図及び断面図である。It is a top view and the cross-sectional view which shows the structural example of the support used in the manufacturing method of the body fluid absorption sheet which concerns on embodiment. 実施形態に係る体液吸収用シートの製造方法を説明する模式図である。It is a schematic diagram explaining the manufacturing method of the body fluid absorption sheet which concerns on embodiment. 実施形態に係る体液吸収用シートの製造過程を説明する模式図である。It is a schematic diagram explaining the manufacturing process of the body fluid absorption sheet which concerns on embodiment.

本実施形態は、以下の態様に関する。
［態様１］
第１面と第２面とを有する体液吸収用シートであって、互いに熱融着された複数の熱融着性繊維を含み、一方の面が前記第１面を構成する不織布層と、複数の親水性繊維を含み、一方の面が前記不織布層の他方の面に隣接し、他方の面が前記第２面を構成する親水性繊維層と、を備え、前記親水性繊維層の前記複数の親水性繊維の一部は、それぞれ前記不織布層を貫通して前記第１面に露出している、体液吸収用シート。 The present embodiment relates to the following aspects.
[Aspect 1]
A body fluid absorbing sheet having a first surface and a second surface, which contains a plurality of heat-sealing fibers heat-sealed to each other, and one surface comprises a non-woven fabric layer constituting the first surface, and a plurality of layers. The plurality of hydrophilic fiber layers, wherein one surface is adjacent to the other surface of the nonwoven fabric layer, and the other surface comprises a hydrophilic fiber layer constituting the second surface. A body fluid absorbing sheet in which a part of the hydrophilic fibers of the above penetrates the non-woven fabric layer and is exposed on the first surface.

本体液吸収用シートでは、不織布層の複数の熱融着性繊維が互いに熱融着されており、かつ、親水性繊維層の複数の親水性繊維の一部がそれぞれ不織布層を貫通して表面（第１面）に露出している。
それゆえ、不織布層が複数の熱融着性繊維による骨格構造を維持できるので、不織布層内に熱融着性繊維同士間の空隙を多く保持できる。そして、表面に排出された体液を、複数の親水性繊維により不織布層内の熱融着性繊維同士間の空隙へ素早く導くことができ、更に親水性繊維層へ素早く導くことができる。したがって、体液吸収用シートでは、表面に排出された体液を短時間で吸収し易くでき、体液を表面から素早く捌け易くできる。
また、体液吸収用シートでは、複数の親水性繊維の一部が、それぞれ不織布層を貫通して表面に露出している。言い換えれば、複数の親水性繊維が束にならずに、分散しつつ、不織布層を貫通して第１面に達している。そのため、体液吸収用シートに体液が吸収され、複数の親水性繊維に体液が保持されたとしても、表面の複数の親水性繊維に保持された体液により表面がべたべたすることや、リウェットが生じることを、起こり難くすることができる。
したがって、体液吸収用シートでは、体液が表面に戻り難くすることができる。
よって、体液吸収用シートにより、吸収性能（吸汗性、吸収速度）が高く、液捌け性が高く、リウェットし難くすることができる。 In the main body liquid absorption sheet, a plurality of heat-sealing fibers of the nonwoven fabric layer are heat-sealed to each other, and a part of the plurality of hydrophilic fibers of the hydrophilic fiber layer penetrates the nonwoven fabric layer to the surface. It is exposed on the (first surface).
Therefore, since the nonwoven fabric layer can maintain the skeleton structure by the plurality of heat-sealing fibers, it is possible to maintain a large number of voids between the heat-sealing fibers in the nonwoven fabric layer. Then, the body fluid discharged to the surface can be quickly guided to the voids between the heat-sealing fibers in the nonwoven fabric layer by the plurality of hydrophilic fibers, and further can be quickly guided to the hydrophilic fiber layer. Therefore, the body fluid absorbing sheet can easily absorb the body fluid discharged to the surface in a short time, and can easily remove the body fluid from the surface quickly.
Further, in the body fluid absorbing sheet, some of the plurality of hydrophilic fibers penetrate the non-woven fabric layer and are exposed on the surface. In other words, the plurality of hydrophilic fibers penetrate the non-woven fabric layer and reach the first surface while being dispersed without being bundled. Therefore, even if the body fluid is absorbed by the body fluid absorption sheet and the body fluid is held by the plurality of hydrophilic fibers, the surface becomes sticky or rewetting occurs due to the body fluid held by the plurality of hydrophilic fibers on the surface. Can be made less likely to occur.
Therefore, in the body fluid absorption sheet, it is possible to prevent the body fluid from returning to the surface.
Therefore, the body fluid absorbing sheet has high absorption performance (sweat absorption property, absorption rate), high liquid release property, and makes it difficult to rewet.

［態様２］
平面視で、前記第１面に分散的に配置された複数の低坪量部と、前記複数の低坪量部の各々に隣接する少なくとも一つの高坪量部と、を有し、前記複数の親水性繊維の一部は、前記高坪量部の前記第１面に露出している、態様１に記載の体液吸収用シート。
本体液吸収用シートでは、複数の親水性繊維の一部は、高坪量部の第１面に露出している。それにより、表面に排出された体液を、露出した親水性繊維により、体液を吸収し易い高坪量部の不織布層へ素早く導き、更に高坪量部の親水性繊維層へ素早く導くことができる。したがって、体液吸収用シートでは、表面に排出された体液をより短時間で吸収し易くでき、体液を表面からより素早く捌け易くできる。また、体液吸収用シートでは、複数の低坪量部を有している。ここで、低坪量部では、吸収され、保持され得る体液の量が少ない。そのため、体液吸収用シートに体液が吸収されても、複数の低坪量部の分だけ、表面の親水性繊維に保持された体液により表面がべたべたすることや、リウェットが生じることを、より起こり難くすることができる。 [Aspect 2]
In a plan view, it has a plurality of low basis weight portions distributedly arranged on the first surface, and at least one high basis weight portion adjacent to each of the plurality of low basis weight portions. The body fluid absorption sheet according to aspect 1, wherein a part of the hydrophilic fibers of the above is exposed on the first surface of the high basis weight portion.
In the main body liquid absorbing sheet, some of the plurality of hydrophilic fibers are exposed on the first surface of the high basis weight portion. As a result, the body fluid discharged to the surface can be quickly guided to the non-woven fabric layer in the high basis weight portion where the body fluid is easily absorbed by the exposed hydrophilic fibers, and further to the hydrophilic fiber layer in the high basis weight portion. .. Therefore, the body fluid absorbing sheet can easily absorb the body fluid discharged to the surface in a shorter time, and can easily separate the body fluid from the surface more quickly. Further, the body fluid absorbing sheet has a plurality of low basis weight portions. Here, in the low basis weight portion, the amount of body fluid that can be absorbed and retained is small. Therefore, even if the body fluid is absorbed by the body fluid absorbing sheet, the surface becomes sticky or rewetting occurs due to the body fluid held by the hydrophilic fibers on the surface due to the plurality of low basis weight portions. It can be difficult.

［態様３］
前記高坪量部における前記低坪量部の近傍の領域の方が、前記高坪量部における前記低坪量部から離れた離間領域よりも、前記第１面に露出している前記親水性繊維が多い、態様２に記載の体液吸収用シート。
本体液吸収用シートでは、高坪量部における低坪量部の近傍の領域の方が、高坪量部における低坪量部から離れた離間領域よりも、第１面に露出している親水性繊維が多くなっている。このように、高坪量部と比較して相対的に体液を吸収し難い低坪量部の近傍に親水性繊維を多く配置することで、低坪量部での吸収の遅れを補助することができる。 [Aspect 3]
The hydrophilicity of the region near the low basis weight portion in the high basis weight portion is more exposed on the first surface than the separated region away from the low basis weight portion in the high basis weight portion. The body fluid absorbing sheet according to aspect 2, which has a large amount of fibers.
In the main body liquid absorption sheet, the region near the low basis weight portion in the high basis weight portion is more hydrophilic than the separated region away from the low basis weight portion in the high basis weight portion. There are many sex fibers. In this way, by arranging a large amount of hydrophilic fibers in the vicinity of the low basis weight part, which is relatively difficult to absorb body fluids as compared with the high basis weight part, it is possible to assist the delay in absorption in the low basis weight part. Can be done.

［態様４］
前記複数の低坪量部の少なくとも一つは、前記第１面から前記第２面まで貫通する貫通孔を有する、態様２又は３に記載の体液吸収用シート。
本体液吸収用シートでは、複数の低坪量部の少なくとも一つは、第１面から第２面まで貫通する貫通孔を有している。それにより、表面（第１面）に排出された体液を、貫通孔を介して、一気に第２面側の親水性繊維層へ移行させることができる。それにより、表面に排出された体液を短時間で吸収し易くでき、体液を表面から素早く捌け易くできる。 [Aspect 4]
The body fluid absorbing sheet according to aspect 2 or 3, wherein at least one of the plurality of low basis weight portions has a through hole penetrating from the first surface to the second surface.
In the main body liquid absorbing sheet, at least one of the plurality of low basis weight portions has a through hole penetrating from the first surface to the second surface. As a result, the body fluid discharged to the surface (first surface) can be transferred to the hydrophilic fiber layer on the second surface side at once through the through holes. As a result, the body fluid discharged to the surface can be easily absorbed in a short time, and the body fluid can be easily separated from the surface quickly.

［態様５］
前記第１面に露出している前記複数の親水性繊維の一部は、前記第１面から、厚さ方向の外側に向って突出する複数の突出親水性繊維を含む、態様１乃至４のいずれか一項に記載の体液吸収用シート。
本体液吸収用シートでは、第１面に露出している複数の親水性繊維の一部のうちの少なくとも一部が、第１面から、厚さ方向の外側に向って突出する複数の突出親水性繊維を含んでいる。そのため、複数の突出親水性繊維により、肌の表面に存在する微量の体液も、素早く捕らえることができ、不織布層へ素早く導き、更に親水性繊維層へ素早く導くことができる。 [Aspect 5]
The plurality of hydrophilic fibers exposed on the first surface include a plurality of protruding hydrophilic fibers protruding outward in the thickness direction from the first surface, according to aspects 1 to 4. The body fluid absorption sheet according to any one of the items.
In the body liquid absorbing sheet, at least a part of the plurality of hydrophilic fibers exposed on the first surface protrudes outward from the first surface in the thickness direction. Contains sex fibers. Therefore, the plurality of protruding hydrophilic fibers can quickly capture even a small amount of body fluid existing on the surface of the skin, and can quickly lead to the non-woven fabric layer and further to the hydrophilic fiber layer.

［態様６］
前記複数の突出親水性繊維の一部は、前記第１面から、前記厚さ方向の外側に向って凸な弧状に突出している、態様５に記載の体液吸収用シート。
本体液吸収用シートでは、複数の突出親水性繊維の一部が、第１面から、外側に向って凸な弧状に突出している。そのため、その突出親水性繊維の弧の略頂部から二方向へ体液を引き込むことができるので、体液を不織布層へ、より素早く導き、更に親水性繊維層へ、より素早く導くことができる。また、その突出親水性繊維のうちの使用者の肌に当接する部分は、繊維の弧の頂部であり、繊維の先端部ではないため、使用者が肌への違和感などを覚えることを抑制できる。 [Aspect 6]
The body fluid absorption sheet according to aspect 5, wherein a part of the plurality of protruding hydrophilic fibers protrudes from the first surface in a convex arc shape toward the outside in the thickness direction.
In the main body liquid absorbing sheet, a part of the plurality of protruding hydrophilic fibers protrudes outward from the first surface in a convex arc shape. Therefore, since the body fluid can be drawn in two directions from the substantially top of the arc of the protruding hydrophilic fiber, the body fluid can be guided to the non-woven fabric layer more quickly and further to the hydrophilic fiber layer more quickly. Further, since the portion of the protruding hydrophilic fiber that comes into contact with the user's skin is the top of the arc of the fiber and not the tip of the fiber, it is possible to prevent the user from feeling uncomfortable with the skin. ..

［態様７］
前記不織布層は、熱融着しない複数の非熱融着性繊維を更に含み、前記不織布層における前記複数の非熱融着性繊維の割合は５０質量％未満である、態様１乃至６のいずれか一項に記載の体液吸収用シート。
本体液吸収用シートでは、不織布層が、熱融着しない複数の非熱融着性繊維を５０質量％未満で有している。そのため、不織布層において、複数の熱融着性繊維により骨格構造を維持しつつ、複数の非熱融着性繊維により変形の自由度を高めることができる。それにより、不織布層において、熱融着性繊維同士間の空隙を広く保持して、体液を不織布層へ素早く導く構造を維持しつつ、不織布層、延いては体液吸収用シートを柔らかくすることができ、体液吸収用シートの使用感を良好にできる。 [Aspect 7]
The nonwoven fabric layer further contains a plurality of non-heat-fused fibers that are not heat-sealed, and the proportion of the plurality of non-heat-fused fibers in the nonwoven fabric layer is less than 50% by mass, any of aspects 1 to 6. The body fluid absorption sheet according to item 1.
In the main body liquid absorbing sheet, the nonwoven fabric layer has a plurality of non-heat-fused fibers that are not heat-fused in an amount of less than 50% by mass. Therefore, in the non-woven fabric layer, the degree of freedom of deformation can be increased by the plurality of non-heat-fused fibers while maintaining the skeleton structure by the plurality of heat-fused fibers. As a result, in the nonwoven fabric layer, the voids between the heat-sealing fibers can be widely maintained, and the structure that quickly guides the body fluid to the nonwoven fabric layer can be maintained, while the nonwoven fabric layer and the body fluid absorbing sheet can be softened. It is possible to improve the usability of the body fluid absorption sheet.

［態様８］
前記複数の熱融着性繊維より、前記複数の親水性繊維の方が、平均繊維径が小さい、態様１乃至７のいずれか一項に記載の体液吸収用シート。
本体液吸収用シートでは、複数の熱融着性繊維より、複数の親水性繊維の方が、平均繊維径が細い。熱融着性繊維の平均繊維径が太いことにより、不織布層が複数の熱融着性繊維による骨格構造をより維持し易く、熱融着性繊維同士間の空隙を広く保持し易くできる。更に、親水性繊維の平均繊維径が細いことにより、第１面に露出した親水性繊維に体液が保持されたとしても、表面がべたべたすることや、リウェットが生じることを、より起こり難くすることができる。 [Aspect 8]
The body fluid absorbing sheet according to any one of aspects 1 to 7, wherein the plurality of hydrophilic fibers have a smaller average fiber diameter than the plurality of heat-sealing fibers.
In the main body liquid absorbing sheet, the average fiber diameter of the plurality of hydrophilic fibers is smaller than that of the plurality of heat-sealing fibers. Since the average fiber diameter of the heat-sealing fibers is large, the nonwoven fabric layer can more easily maintain the skeleton structure of the plurality of heat-sealing fibers, and can easily maintain the voids between the heat-sealing fibers widely. Further, since the average fiber diameter of the hydrophilic fibers is small, even if the body fluid is retained by the hydrophilic fibers exposed on the first surface, the surface becomes sticky and rewetting is less likely to occur. Can be done.

［態様９］
前記複数の親水性繊維は、再生セルロース繊維を含む、態様１乃至８のいずれか一項に記載の体液吸収用シート。
本体液吸収用シートでは、複数の親水性繊維は、再生セルロース繊維を含んでいる。ここで、再生セルロース繊維は再生繊維であるため、品質が均一で吸水性に優れている。そのため、体液吸収用シートでは、表面に排出された体液をより短時間で吸収し易くでき、体液を表面からより素早く捌け易くできる。 [Aspect 9]
The body fluid absorption sheet according to any one of aspects 1 to 8, wherein the plurality of hydrophilic fibers include regenerated cellulose fibers.
In the body liquid absorbing sheet, the plurality of hydrophilic fibers contain regenerated cellulose fibers. Here, since the regenerated cellulose fiber is a regenerated fiber, the quality is uniform and the water absorption is excellent. Therefore, the body fluid absorbing sheet can easily absorb the body fluid discharged to the surface in a shorter time, and can easily separate the body fluid from the surface more quickly.

［態様１０］
第１面と第２面とを有する体液吸収用シートの製造方法であって、互いに熱融着された複数の熱融着性繊維を含み、一方の面が前記第１面を構成する不織布層を準備する工程と、メッシュ状の支持体の表面に前記不織布層の一方の面が接し、前記不織布層の他方の面に複数の親水性繊維を含む繊維ウェブの一方の面が接するように、前記支持体に前記不織布層及び前記繊維ウェブを載置する載置工程と、前記不織布層上に載置された前記繊維ウェブの他方の面に向かって水流を噴射し、前記複数の親水性繊維を前記複数の熱融着性繊維に交絡させて、前記複数の親水性繊維を含み、一方の面が前記不織布層の他方の面に隣接し、他方の面が前記第２面を構成する親水性繊維層を形成する交絡工程と、を備え、前記交絡工程において、前記親水性繊維層の前記複数の親水性繊維の一部は、それぞれ前記不織布層を貫通して前記第１面に露出する、体液吸収用シートの製造方法。 [Aspect 10]
A method for producing a body fluid absorbing sheet having a first surface and a second surface, which comprises a plurality of heat-sealing fibers heat-sealed to each other, and one surface constitutes the first surface. And one surface of the non-woven layer are in contact with the surface of the mesh-like support, and one side of the fiber web containing a plurality of hydrophilic fibers is in contact with the other side of the non-woven layer. A mounting step of placing the non-woven fabric layer and the fiber web on the support, and spraying a water stream toward the other surface of the fiber web placed on the non-woven fabric layer, the plurality of hydrophilic fibers. Is entangled with the plurality of heat-sealing fibers to contain the plurality of hydrophilic fibers, one surface of which is adjacent to the other surface of the non-woven fabric layer, and the other surface of which constitutes the second surface. It comprises an entanglement step of forming a sex fiber layer, and in the entanglement step, a part of the plurality of hydrophilic fibers of the hydrophilic fiber layer penetrates the non-woven fabric layer and is exposed to the first surface. , A method for manufacturing a sheet for absorbing body fluid.

本体液吸収用シートの製造方法では、メッシュ状の支持体に、互いに熱融着された複数の熱融着性繊維を含む不織布層と、複数の親水性繊維を含む繊維ウェブと、を順次載置し、繊維ウェブ側から水流交絡を行っている。
不織布層では熱融着性繊維が予め熱融着されているので、水流交絡しても、熱融着性繊維による骨格構造を維持できる。それにより、製造された体液吸収用シートにおいて、熱融着性繊維同士間の空隙を広く保持できると共に、表面に排出された体液を、複数の親水性繊維により不織布層へ素早く導き、更に親水性繊維層へ素早く導くことができる。
また、繊維ウェブ側から水流を噴射しているので、繊維ウェブの親水性繊維を、不織布層を貫通させて第１面に達するように交絡できる。それにより、製造された体液吸収用シートにおいて、体液吸収用シートに体液が吸収されても、表面の複数の親水性繊維に保持された体液により表面がべたべたすることや、リウェットが生じることを、起こり難くすることができる。
よって、吸収性能（吸汗性、吸収速度）が高く、液捌け性が高く、リウェットし難くすることができる体液吸収用シートを製造することができる。 In the method for manufacturing a sheet for absorbing main body liquid, a non-woven fabric layer containing a plurality of heat-sealing fibers heat-sealed to each other and a fiber web containing a plurality of hydrophilic fibers are sequentially mounted on a mesh-shaped support. It is placed and water flow confounding is performed from the fiber web side.
Since the heat-sealing fibers are preliminarily heat-sealed in the non-woven fabric layer, the skeletal structure of the heat-sealing fibers can be maintained even when confounding with water flow. As a result, in the manufactured body fluid absorption sheet, the voids between the heat-sealing fibers can be widely maintained, and the body fluid discharged to the surface can be quickly guided to the non-woven fabric layer by the plurality of hydrophilic fibers, and further hydrophilic. It can be quickly guided to the fiber layer.
Further, since the water flow is sprayed from the fiber web side, the hydrophilic fibers of the fiber web can be entangled so as to penetrate the non-woven fabric layer and reach the first surface. As a result, in the manufactured body fluid absorption sheet, even if the body fluid is absorbed by the body fluid absorption sheet, the surface becomes sticky due to the body fluid held by the plurality of hydrophilic fibers on the surface, and rewetting occurs. It can be less likely to occur.
Therefore, it is possible to manufacture a body fluid absorbing sheet having high absorption performance (sweat absorption property, absorption rate), high liquid dispersibility, and making it difficult to rewet.

［態様１１］
前記支持体は、前記不織布層の側に突出する複数の突出部を有する、態様１０に記載の体液吸収用シートの製造方法。
本体液吸収用シートの製造方法では、支持体は、不織布層の側に突出する複数の突出部を有している。そのため、交絡工程では、噴射された水流が突出部に衝突することにより、不織布層の熱融着性繊維が水流でかき分けられ易くなる。それにより、熱融着性繊維が水流でかき分けられたところに、繊維ウェブの親水性繊維を進入し易くすることができる。それにより、より容易に、親水性繊維の一部を、それぞれ不織布層を貫通して第１面に露出させることができる。 [Aspect 11]
The method for producing a body fluid absorbing sheet according to aspect 10, wherein the support has a plurality of protrusions protruding toward the non-woven fabric layer.
In the method for manufacturing the main body liquid absorbing sheet, the support has a plurality of protrusions protruding toward the non-woven fabric layer. Therefore, in the entanglement step, the jetted water flow collides with the protruding portion, so that the heat-sealing fibers of the nonwoven fabric layer are easily separated by the water flow. Thereby, the hydrophilic fibers of the fiber web can easily enter the place where the heat-sealing fibers are separated by the water flow. Thereby, a part of the hydrophilic fiber can be more easily exposed to the first surface through the non-woven fabric layer.

以下、本発明の実施形態に係る体液吸収用シート及び体液吸収用シートの製造方法について説明する。 Hereinafter, a method for manufacturing a body fluid absorbing sheet and a body fluid absorbing sheet according to an embodiment of the present invention will be described.

本実施形態では、体液吸収用シートを生理用ナプキンの表面シートに適用した例を説明する。ただし、本発明の主題の範囲を逸脱しない限り、本発明の体液吸収用シートは他の吸収性物品にも適用可能である。他の吸収性物品としては、例えばパンティライナー、失禁パッド、使い捨ておむつ、マスク、汗とりシート、母乳パッド、ペット用おむつ、ペットシート、ドリップシートなどが挙げられる。また、本発明の主題の範囲を逸脱しない限り、本発明の体液吸収用シートは吸収性物品における他の部材にも適用可能である。他の部材としては、補助シート、コアラップ、外装シートなどが挙げられる。 In this embodiment, an example in which a body fluid absorption sheet is applied to a surface sheet of a menstrual napkin will be described. However, the body fluid absorbing sheet of the present invention can be applied to other absorbent articles as long as it does not deviate from the scope of the subject matter of the present invention. Other absorbent articles include, for example, panty liners, incontinence pads, disposable diapers, masks, sweat-absorbing sheets, breast milk pads, pet diapers, pet sheets, drip sheets and the like. Further, the body fluid absorbing sheet of the present invention can be applied to other members of the absorbent article as long as it does not deviate from the scope of the subject matter of the present invention. Other members include auxiliary sheets, core wraps, exterior sheets and the like.

まず、実施形態に係る体液吸収用シートについて説明する。図１～図２は実施形態に係る体液吸収用シートを用いた生理用ナプキン１の構成例を示す図である。図１は生理用ナプキン１を展開した状態を示す平面図であり、図２は図１のＩＩ－ＩＩ線に沿った断面図である。生理用ナプキン１は、互いに直交する長手方向Ｌ、幅方向Ｗ及び厚さ方向Ｔを有する。図１に描かれた生理用ナプキン１では、図の上側及び下側をそれぞれ長手方向Ｌの前側及び後側とし、左側及び右側をそれぞれ幅方向Ｗの左側及び右側とし、紙面に対して手前側及び奥側をそれぞれ厚さ方向Ｔの上側及び下側とする。生理用ナプキン１は、幅方向Ｗの中心を通り長手方向Ｌに延びる長手方向中心線ＣL（仮想線）と、長手方向Ｌの中心を通り幅方向Ｗに延びる幅方向中心線ＣW（仮想線）とを有する。長手方向中心線ＣLに向かう向き及び側をそれぞれ幅方向Ｗの内向き及び内側とし、遠ざかる向き及び側をそれぞれ幅方向Ｗの外向き及び外側とする。一方、幅方向中心線ＣWに向かう向き及び側をそれぞれ長手方向Ｌの内向き及び内側とし、遠ざかる向き及び側をそれぞれ長手方向Ｌの外向き及び外側とする。長手方向Ｌ及び幅方向Ｗを含む平面上に置いた生理用ナプキン１を厚さ方向Ｔの上側から見ることを平面視といい、平面視で把握される形状を平面形状という。長手方向Ｌ及び幅方向Ｗを含む平面内の任意の方向を平面方向という。装着者が生理用ナプキン１を装着したとき、厚さ方向Ｔにて相対的に装着者の肌面に近い側及び遠い側となる側をそれぞれ肌側及び非肌側という。これら定義は、生理用ナプキン１の各資材にも共通に用いられる。 First, the body fluid absorption sheet according to the embodiment will be described. 1 to 2 are views showing a configuration example of a menstrual napkin 1 using the body fluid absorption sheet according to the embodiment. FIG. 1 is a plan view showing a state in which the menstrual napkin 1 is unfolded, and FIG. 2 is a cross-sectional view taken along the line II-II of FIG. The menstrual napkin 1 has a longitudinal direction L, a width direction W, and a thickness direction T orthogonal to each other. In the sanitary napkin 1 drawn in FIG. 1, the upper side and the lower side of the figure are the front side and the rear side in the longitudinal direction L, respectively, and the left side and the right side are the left side and the right side in the width direction W, respectively, and the front side with respect to the paper surface. And the back side are the upper side and the lower side in the thickness direction T, respectively. The menstrual napkin 1 has a longitudinal center line C L (virtual line) that passes through the center of the width direction W and extends in the longitudinal direction L, and a width direction center line C W (virtual line) that passes through the center of the longitudinal direction L and extends in the width direction W. Line) and. The direction and side toward the center line C L in the longitudinal direction are the inward direction and the inside of the width direction W, respectively, and the direction and the side away from each other are the outward direction and the outside of the width direction W, respectively. On the other hand, the direction and the side toward the center line C W in the width direction are the inward and the inside of the longitudinal direction L, respectively, and the direction and the side away from it are the outward and the outside of the longitudinal direction L, respectively. The view of the menstrual pad 1 placed on the plane including the longitudinal direction L and the width direction W from the upper side in the thickness direction T is referred to as a plan view, and the shape grasped in the plan view is referred to as a planar shape. Any direction in the plane including the longitudinal direction L and the width direction W is referred to as a plane direction. When the wearer wears the menstrual napkin 1, the sides relatively close to and far from the skin surface of the wearer in the thickness direction T are referred to as the skin side and the non-skin side, respectively. These definitions are also commonly used for each material of the menstrual napkin 1.

本実施形態では、生理用ナプキン１（ウイング部を除く）は、平面視で、長手方向Ｌに長く幅方向Ｗに短い略矩形の形状で、長手方向Ｌの両端辺は略半円形の形状を有する。なお、生理用ナプキン１の形状は、長手方向Ｌに長く幅方向Ｗに短ければ特に制限されず、例えば角丸長方形、楕円形、瓢箪型、及び砂時計型が挙げられる。生理用ナプキン１は、略矩形の形状の部分から幅方向Ｗの両外側に延出する一対のウイング部９を備える。ウイング部９は略台形の形状を有する。なお、その形状は例えば半円形や半楕円形でもよい。 In the present embodiment, the menstrual napkin 1 (excluding the wing portion) has a substantially rectangular shape long in the longitudinal direction L and short in the width direction W in a plan view, and both ends of the longitudinal direction L have a substantially semicircular shape. Have. The shape of the menstrual napkin 1 is not particularly limited as long as it is long in the longitudinal direction L and short in the width direction W, and examples thereof include a rounded rectangle, an ellipse, a gourd shape, and an hourglass shape. The menstrual napkin 1 includes a pair of wing portions 9 extending from a portion having a substantially rectangular shape to both outer sides in the width direction W. The wing portion 9 has a substantially trapezoidal shape. The shape may be, for example, a semicircular shape or a semi-elliptical shape.

本実施形態では、生理用ナプキン１は、表面シートとしての体液吸収用シート２と、補助シート５と、吸収体４と、裏面シート３と、着衣固定部７と、を備える。表面シートとして機能する体液吸収用シート２は、液透過性のシートであり、本実施形態では生理用ナプキン１の肌側の表面を構成する。その詳細は後述される。補助シート５は、液透過性のシートであり、本実施形態では体液吸収用シート２の非肌側に積層される。吸収体４は、液吸収性及び液保持性の材料であり、体液吸収用シート２（及び補助シート５）と裏面シート３との間に位置する。裏面シート３は、液不透過性のシートであり、本実施形態では生理用ナプキン１の非肌側の表面を構成する。着衣固定部７は、生理用ナプキン１を下着の肌側面に接着する粘着剤であり、本実施形態では裏面シート３の非肌側の表面に位置する。したがって、生理用ナプキン１では、体液吸収用シート２と補助シート５と吸収体４と裏面シート３と着衣固定部７とが厚さ方向Ｔにこの順に積層される。なお、生理用ナプキン１は、裏面シート３の非肌側に外装シートを更に備えてもよい。 In the present embodiment, the sanitary napkin 1 includes a body fluid absorbing sheet 2 as a front surface sheet, an auxiliary sheet 5, an absorbent body 4, a back surface sheet 3, and a clothing fixing portion 7. The body fluid absorbing sheet 2 that functions as a surface sheet is a liquid permeable sheet, and constitutes the skin-side surface of the menstrual napkin 1 in the present embodiment. The details will be described later. The auxiliary sheet 5 is a liquid permeable sheet, and in this embodiment, it is laminated on the non-skin side of the body fluid absorbing sheet 2. The absorber 4 is a liquid-absorbing and liquid-retaining material, and is located between the body fluid absorbing sheet 2 (and the auxiliary sheet 5) and the back surface sheet 3. The back surface sheet 3 is a liquid-impermeable sheet, and in this embodiment, constitutes the surface of the sanitary napkin 1 on the non-skin side. The clothing fixing portion 7 is an adhesive that adheres the menstrual napkin 1 to the skin side surface of the underwear, and is located on the non-skin side surface of the back sheet 3 in the present embodiment. Therefore, in the menstrual napkin 1, the body fluid absorbing sheet 2, the auxiliary sheet 5, the absorber 4, the back surface sheet 3, and the clothing fixing portion 7 are laminated in this order in the thickness direction T. The menstrual napkin 1 may further include an exterior sheet on the non-skin side of the back sheet 3.

本実施形態では、生理用ナプキン１は、一対のサイドシート６と、一対の着衣固定部８と、を更に備える。一対のサイドシート６は、親水性又は撥水性のシートであり、本実施形態では補助シート５における幅方向Ｗの両側に位置する。一対のサイドシート６は、幅方向Ｗの内側に、長手方向Ｌに沿って延びる一対の防漏壁１６を含んでいる。一対の防漏壁１６の各々は、幅方向Ｗの外側の端部を固定端１６Ｅ１とされ、補助シート５と接合し、内側の端部を自由端１６Ｅ２とされ、部材と非接合しない。防漏壁１６は、自由端１６Ｅ２に、長手方向Ｌに沿って延びる弾性部材を有してもよい。幅方向Ｗにおいて、体液吸収用シート２の幅方向Ｗの端縁２Ｅは、幅方向Ｗに対向する防漏壁１６の固定端１６Ｅ１及び自由端１６Ｅ２から離間しており、したがって、平面視で、体液吸収用シート２と一対の防漏壁１６との間に補助シート５が露出している。一対の着衣固定部８は、一対のウイング部９を下着の非肌側面に接着する粘着剤であり、本実施形態では一対のウイング部９における裏面シート３の非肌側の表面に位置する。 In the present embodiment, the menstrual napkin 1 further includes a pair of side seats 6 and a pair of clothing fixing portions 8. The pair of side sheets 6 are hydrophilic or water-repellent sheets, and are located on both sides of the auxiliary sheet 5 in the width direction W in the present embodiment. The pair of side seats 6 includes a pair of leak-proof walls 16 extending along the longitudinal direction L inside the width direction W. Each of the pair of leak-proof walls 16 has a fixed end 16E1 at the outer end in the width direction W and is joined to the auxiliary sheet 5, and an inner end is a free end 16E2 and is not non-joined to the member. The leak-proof wall 16 may have an elastic member extending along the longitudinal direction L at the free end 16E2. In the width direction W, the end edge 2E of the body fluid absorbing sheet 2 in the width direction W is separated from the fixed end 16E1 and the free end 16E2 of the leak-proof wall 16 facing the width direction W, and therefore, in a plan view, The auxiliary sheet 5 is exposed between the body fluid absorbing sheet 2 and the pair of leak-proof walls 16. The pair of clothing fixing portions 8 is an adhesive that adheres the pair of wing portions 9 to the non-skin side surface of the underwear, and is located on the non-skin side surface of the back sheet 3 in the pair of wing portions 9 in the present embodiment.

本実施形態では、生理用ナプキン１は、長手方向Ｌの略中央に位置し、長手方向Ｌに延びる一対の圧搾溝１２及び一対の圧搾溝１３と、長手方向Ｌの前方及び後方にそれぞれ位置する圧搾溝１１及び圧搾溝１４と、長手方向Ｌ及び幅方向Ｗの略中央に点状の複数の圧搾溝１５と、を備える。それら圧搾溝１１～１５は、体液吸収用シート２と補助シート５と吸収体４とが厚さ方向Ｔに圧搾され形成される。なお、圧搾溝１１～１５の形状は任意であり、生理用ナプキン１は、圧搾溝１１～１５少なくとも一つを備えなくてもよい。 In the present embodiment, the menstrual napkin 1 is located substantially in the center of the longitudinal direction L, and is located in the pair of squeezing grooves 12 and the pair of squeezing grooves 13 extending in the longitudinal direction L, and in front of and behind the longitudinal direction L, respectively. The squeezing groove 11 and the squeezing groove 14 are provided, and a plurality of squeezing grooves 15 having dots in the substantially center of the longitudinal direction L and the width direction W are provided. The squeezing grooves 11 to 15 are formed by squeezing the body fluid absorbing sheet 2, the auxiliary sheet 5, and the absorber 4 in the thickness direction T. The shape of the squeezing grooves 11 to 15 is arbitrary, and the menstrual napkin 1 does not have to include at least one of the squeezing grooves 11 to 15.

本実施形態では、体液吸収用シート２は、長手方向Ｌに長く幅方向Ｗに短い略矩形の形状で、長手方向Ｌの両端辺が略半円形の形状を有し、肌側の表面である第１面２Ｓ１と非肌側の表面である第２面２Ｓ２とを有している。補助シート５は、長手方向Ｌに長く幅方向Ｗに短い略矩形の形状で、長手方向Ｌの両端辺が略半円形の形状を有する。補助シート５は、体液吸収用シート２と比較して幅方向Ｗにやや大きい形状を有する。したがって、補助シート５の幅方向Ｗの長さ（幅）は、体液吸収用シート２の幅方向Ｗの長さ（幅）よりも大きい。そして、平面視で、補助シート５の幅方向Ｗの両端部の各々は、体液吸収用シート２の幅方向Ｗの両端縁２Ｅの各々の外側に延出し、一対のサイドシート６と接着剤や熱融着等で接合されている。なお、体液吸収用シート２は、幅方向Ｗの長さ（幅）が、補助シート５と同程度又はそれより大きくてもよい。その場合、平面視で、体液吸収用シート２の幅方向Ｗの両端部の各々は、一対のサイドシート６に接合される。なお、生理用ナプキン１は、補助シート５を備えなくてもよい。 In the present embodiment, the body fluid absorbing sheet 2 has a substantially rectangular shape long in the longitudinal direction L and short in the width direction W, and both ends of the longitudinal direction L have a substantially semicircular shape, and is a surface on the skin side. It has a first surface 2S1 and a second surface 2S2 which is a surface on the non-skin side. The auxiliary sheet 5 has a substantially rectangular shape that is long in the longitudinal direction L and short in the width direction W, and has a substantially semicircular shape at both ends of the longitudinal direction L. The auxiliary sheet 5 has a shape slightly larger in the width direction W than the body fluid absorbing sheet 2. Therefore, the length (width) of the auxiliary sheet 5 in the width direction W is larger than the length (width) of the body fluid absorbing sheet 2 in the width direction W. Then, in a plan view, each of both ends of the auxiliary sheet 5 in the width direction W extends to the outside of each of the both end edges 2E of the body fluid absorption sheet 2 in the width direction W, and the pair of side sheets 6 and the adhesive or the like. It is joined by heat fusion or the like. The length (width) of the body fluid absorbing sheet 2 in the width direction W may be about the same as or larger than that of the auxiliary sheet 5. In that case, in a plan view, each of both ends of the body fluid absorbing sheet 2 in the width direction W is joined to the pair of side sheets 6. The menstrual napkin 1 does not have to be provided with the auxiliary sheet 5.

本実施形態では、体液吸収用シート２、補助シート５、吸収体４及び裏面シート３の各々は互いに接着剤で接合され、裏面シート３の周辺部分と補助シート５の長手方向Ｌの外側部分及び一対のサイドシート６の幅方向Ｗの外側部分とは互いに接着剤で接合される。 In the present embodiment, each of the body fluid absorbing sheet 2, the auxiliary sheet 5, the absorber 4, and the back surface sheet 3 is bonded to each other with an adhesive, and the peripheral portion of the back surface sheet 3 and the outer portion of the auxiliary sheet 5 in the longitudinal direction L and The pair of side sheets 6 are bonded to each other with an adhesive to the outer portions in the width direction W.

図３は、実施形態に係る体液吸収用シートの構成例を示す平面図及び断面図である。図３（ａ）は平面図であり、図３（ｂ）は図３（ａ）のＩＩＩｂ－ＩＩＩｂ線に沿った断面図である。体液吸収用シート２は、互いに熱融着された複数の熱融着性繊維を含み、一方の面が第１面２Ｓ１を構成する不織布層２ａと、複数の親水性繊維を含み、一方の面が不織布層２ａの他方の面に隣接し、他方の面が第２面２Ｓ２を構成する親水性繊維層２ｂと、を備えている。親水性繊維層２ｂの複数の親水性繊維の一部は、それぞれ不織布層２ａを貫通して第１面２Ｓ１に露出している。なお、体液吸収用シート２は、第２面２Ｓ２側に他の繊維層（例示：親水性繊維層）を更に備えてもよい。 FIG. 3 is a plan view and a cross-sectional view showing a configuration example of the body fluid absorption sheet according to the embodiment. 3 (a) is a plan view, and FIG. 3 (b) is a cross-sectional view taken along the line IIIb-IIIb of FIG. 3 (a). The body fluid absorbing sheet 2 contains a plurality of heat-sealing fibers fused to each other, and one surface contains a non-woven fabric layer 2a constituting the first surface 2S1 and a plurality of hydrophilic fibers, and one surface thereof. Is adjacent to the other surface of the nonwoven fabric layer 2a, and the other surface comprises a hydrophilic fiber layer 2b constituting the second surface 2S2. A part of the plurality of hydrophilic fibers of the hydrophilic fiber layer 2b penetrates the nonwoven fabric layer 2a and is exposed on the first surface 2S1. The body fluid absorbing sheet 2 may be further provided with another fiber layer (eg, a hydrophilic fiber layer) on the second surface 2S2 side.

不織布層２ａに含まれる複数の熱融着性繊維は、熱融着性繊維同士が互いに接する箇所で熱融着により互いに接合した複数の接合点（融着点）を有している。このような、複数の接合点（融着点）を有する不織布層２ａは、複数の熱融着性繊維による骨格構造（マトリックス）を保持していると見ることができる。一方、親水性繊維層２ｂに含まれる複数の親水性繊維の一部は、それぞれ骨格構造を有する不織布層２ａを貫通して、不織布層２ａ側の第１面２Ｓ１に露出している。言い換えれば、複数の親水性繊維が束にならずに、骨格構造の中を分散しつつ、不織布層２ａを貫通して第１面２Ｓ１に達している。なお、不織布層２ａに含まれる複数の熱融着性繊維は、ほとんど親水性繊維層２ｂを貫通せず、したがって、親水性繊維層２ｂ側の第２面２Ｓ２にはほとんど露出していない。本実施形態では、不織布層２ａの熱融着性繊維は第２面２Ｓ２には露出していない。 The plurality of heat-sealing fibers contained in the nonwoven fabric layer 2a have a plurality of bonding points (fusion points) bonded to each other by heat fusion at locations where the heat-sealing fibers are in contact with each other. It can be seen that the nonwoven fabric layer 2a having a plurality of bonding points (fusion points) holds a skeleton structure (matrix) composed of the plurality of heat-sealing fibers. On the other hand, some of the plurality of hydrophilic fibers contained in the hydrophilic fiber layer 2b penetrate the nonwoven fabric layer 2a having a skeleton structure and are exposed on the first surface 2S1 on the nonwoven fabric layer 2a side. In other words, the plurality of hydrophilic fibers do not form a bundle but disperse in the skeleton structure, penetrate the nonwoven fabric layer 2a, and reach the first surface 2S1. The plurality of heat-sealing fibers contained in the nonwoven fabric layer 2a hardly penetrate the hydrophilic fiber layer 2b, and therefore are hardly exposed on the second surface 2S2 on the hydrophilic fiber layer 2b side. In the present embodiment, the heat-sealing fibers of the nonwoven fabric layer 2a are not exposed on the second surface 2S2.

不織布層２ａの熱融着性繊維は、熱融着性を有する繊維であれば、特に制限されない。熱融着性繊維としては、例えば、熱可塑性樹脂繊維が挙げられる。熱可塑性樹脂繊維は、熱可塑性樹脂を含む繊維であれば、特に制限されない。熱可塑性樹脂としては、例えば、ポチエチレン（ＰＥ）、ポリプロピレン（ＰＰ）、エチレン－酢酸ビニル共重合体（ＥＶＡ）等のオレフィン系樹脂、ポリエチレンテレフタレート（ＰＥＴ）、ポリ乳酸（ＰＬＡ）等のポリエステル系樹脂、６－ナイロン等のポリアミド系樹脂などの公知の樹脂が挙げられ、これらの樹脂は単独で使用しても、二種類以上の樹脂を併用してもよい。また、このような熱可塑性樹脂からなる繊維の構造は、特に制限されず、例えば、芯鞘型繊維、サイド・バイ・サイド型繊維、島／海型繊維等の複合繊維；中空タイプの繊維；扁平、Ｙ字形、Ｃ字形等の異形断面型繊維；潜在捲縮又は顕在捲縮の立体捲縮繊維；水流、熱、エンボス加工等の物理的負荷により分割する分割繊維などが挙げられ、これらの構造を有する繊維は単独で使用しても、二種類以上の繊維を併用してもよい。本実施形態では、熱融着性繊維としては、ＰＥＴ／ＰＥ芯鞘型複合繊維である。 The heat-fused fiber of the nonwoven fabric layer 2a is not particularly limited as long as it is a fiber having heat-fused property. Examples of the heat-bondable fiber include a thermoplastic resin fiber. The thermoplastic resin fiber is not particularly limited as long as it is a fiber containing a thermoplastic resin. Examples of the thermoplastic resin include olefin resins such as potiethylene (PE), polypropylene (PP) and ethylene-vinyl acetate copolymer (EVA), and polyester resins such as polyethylene terephthalate (PET) and polylactic acid (PLA). Examples thereof include known resins such as resins and polyamide resins such as 6-nylon, and these resins may be used alone or in combination of two or more kinds of resins. Further, the structure of the fiber made of such a thermoplastic resin is not particularly limited, and for example, a composite fiber such as a core-sheath type fiber, a side-by-side type fiber, and an island / sea type fiber; a hollow type fiber; Irregular cross-sectional fibers such as flat, Y-shaped, C-shaped; three-dimensional crimped fibers with latent or overt crimps; split fibers that are split by physical load such as water flow, heat, embossing, etc. The fibers having a structure may be used alone or in combination of two or more kinds of fibers. In the present embodiment, the heat-sealing fiber is a PET / PE core-sheath type composite fiber.

親水性繊維層２ｂの親水性繊維は、親水性を有する繊維であれば、特に制限されない。親水性繊維としては、親水処理をした上記の熱可塑性樹脂繊維や、保水性繊維や、それらの組み合わせが挙げられる。保水性繊維としては、例えば、セルロース系繊維が挙げられる。セルロース系繊維としては、セルロースを含む繊維であれば、特に制限はなく、例えば、天然セルロース繊維、再生セルロース繊維、精製セルロース繊維及び半合成セルロース繊維が挙げられる。天然セルロース繊維としては、植物繊維、例えば、種子毛繊維（例示：コットン）、じん皮繊維（例示：麻）、葉脈繊維（例示：マニラ麻）、果実繊維（例示：やし）が挙げられる。コットンとしては、例えば、ヒルスツム種コットン（例示：アップランドコットン）、バルバデンセ種コットン、アルボレウム種コットン及びヘルバケウム種コットンが挙げられる。また、コットンとしては、オーガニックコットン、プレオーガニックコットン（商標）でもよい。ただし、オーガニックコットンは、ＧＯＴＳ（Ｇｌｏｂａｌ Ｏｒｇａｎｉｃ Ｔｅｘｔｉｌｅ Ｓｔａｎｄａｒｄ）の認証を受けたコットンを意味する。再生セルロース繊維としては、レーヨン、例えば、ビスコースから得られるビスコースレーヨン、ポリノジック及びモダール、セルロースの銅アンモニア塩溶液から得られる銅アンモニアレーヨン（「キュプラ」とも称される）等の繊維が挙げられる。精製セルロース繊維としては、リヨセル、具体的には、パルプを、Ｎ－メチルモルホリンＮ－オキシドの水溶液に溶解させて紡糸原液（ドープ）とし、Ｎ－メチルモルホリンＮ－オキシドの希薄溶液中に押出して繊維としたものが挙げられる。精製セルロースは、例えば、テンセル（商標）として市販されている。半合成セルロース繊維としては、半合成セルロース、例えば、アセテート繊維、例えば、トリアセテート及びジアセテート等の繊維が挙げられる。中でも、保水性及び肌触りの観点から、天然セルロース繊維が好ましく、コットンがより好ましく、ヒルスツム種コットンが更に好ましい。本実施形態では、親水性繊維としては再生セルロース繊維のレーヨンである。 The hydrophilic fiber of the hydrophilic fiber layer 2b is not particularly limited as long as it is a fiber having hydrophilicity. Examples of the hydrophilic fiber include the above-mentioned thermoplastic resin fiber that has been treated with hydrophilicity, a water-retaining fiber, and a combination thereof. Examples of the water-retaining fiber include cellulosic fibers. The cellulosic fiber is not particularly limited as long as it is a fiber containing cellulose, and examples thereof include natural cellulose fiber, regenerated cellulose fiber, purified cellulose fiber and semi-synthetic cellulose fiber. Examples of natural cellulose fibers include plant fibers (eg, cotton), skin fibers (eg, hemp), leaf vein fibers (eg, Manila hemp), and fruit fibers (eg, palm). Examples of the cotton include Hilstum type cotton (example: Upland cotton), Barbadense type cotton, Arboleum type cotton and Helbaqueum type cotton. Further, the cotton may be organic cotton or pre-organic cotton (trademark). However, organic cotton means cotton certified by GOTS (Global Organic Textile Standard). Examples of the regenerated cellulose fiber include fibers such as rayon, for example, viscose rayon obtained from viscose, polynosic and modal, and cuprammonium rayon (also referred to as “cupra”) obtained from a cuprammonium rayon solution of cellulose. .. As the purified cellulose fiber, lyocell, specifically, pulp is dissolved in an aqueous solution of N-methylmorpholine N-oxide to prepare a spinning stock solution (dope), which is extruded into a dilute solution of N-methylmorpholine N-oxide. Examples include those made of fibers. Purified cellulose is commercially available, for example, as Tencel ™. Examples of the semi-synthetic cellulose fiber include semi-synthetic cellulose, for example, acetate fiber, for example, fiber such as triacetate and diacetate. Among them, natural cellulose fibers are preferable, cotton is more preferable, and Hilstum type cotton is further preferable, from the viewpoint of water retention and touch. In the present embodiment, the hydrophilic fiber is rayon of regenerated cellulose fiber.

体液吸収用シート２は、不織布層２ａと親水性繊維層２ｂとが互いに交絡（例示：水流交絡）され形成されているので、それぞれの層を構成する繊維の一部はもう一方の層へ混入している。特に、親水性繊維層２ｂの複数の親水性繊維の一部は、それぞれ不織布層２ａを貫通して第１面２Ｓ１に露出している。本実施形態では、第１面２Ｓ１に露出する親水性繊維の一部は、第１面２Ｓ１から、厚さ方向Ｔの外側（上側）に向って突出する複数の突出親水性繊維３０ｐを含んでいる。それら複数の突出親水性繊維３０ｐの一部は、第１面２Ｓ１から、厚さ方向Ｔの外側（上側）に向って凸な弧状（例示：山の形、ヘアピンの形、ループの形）に突出していてもよい。 Since the non-woven fabric layer 2a and the hydrophilic fiber layer 2b are formed by being entangled with each other (example: water flow entanglement) in the body fluid absorbing sheet 2, some of the fibers constituting each layer are mixed into the other layer. is doing. In particular, some of the plurality of hydrophilic fibers in the hydrophilic fiber layer 2b penetrate the nonwoven fabric layer 2a and are exposed on the first surface 2S1. In the present embodiment, a part of the hydrophilic fibers exposed on the first surface 2S1 includes a plurality of protruding hydrophilic fibers 30p protruding from the first surface 2S1 toward the outside (upper side) in the thickness direction T. There is. A part of the plurality of protruding hydrophilic fibers 30p has an arc shape (example: mountain shape, hairpin shape, loop shape) convex toward the outside (upper side) in the thickness direction T from the first surface 2S1. It may be protruding.

別の実施形態では、不織布層２ａは、熱融着性繊維の他に熱融着しない複数の非熱融着性繊維を更に含んでいる。不織布層２ａにおける複数の非熱融着性繊維の割合は、５０質量％未満である。不織布層２ａにおける骨格構造の維持と変形の自由度とを両立させる観点からである。その割合は、好ましくは、１０～４０質量％である。非融着性繊維としては、例えば、上記の親水性繊維が挙げられ、好ましくは再生セルロース繊維であり、より好ましくはレーヨンである。なお、複数の非熱融着性繊維は、親水性繊維層２ｂから混入した親水性繊維とは別である。 In another embodiment, the non-woven fabric layer 2a further contains a plurality of non-heat-fused fibers in addition to the heat-fused fibers. The proportion of the plurality of non-heat-fused fibers in the nonwoven fabric layer 2a is less than 50% by mass. This is from the viewpoint of achieving both the maintenance of the skeletal structure in the nonwoven fabric layer 2a and the degree of freedom of deformation. The ratio is preferably 10 to 40% by mass. Examples of the non-fusing fiber include the above-mentioned hydrophilic fiber, preferably a regenerated cellulose fiber, and more preferably rayon. The plurality of non-heat-fused fibers are different from the hydrophilic fibers mixed from the hydrophilic fiber layer 2b.

不織布層２ａの熱融着性繊維の繊度は、特に制限されず、例えば１～１０ｄｔｅｘが挙げられる。不織布層２ａの熱融着性繊維は短繊維及び長繊維（例示：スパンメルト不織布）のどちらでも良い。熱融着性繊維が短繊維の場合での繊維長は、特に制限されず、例えば２～８０ｍｍが挙げられる。２ｍｍ未満の場合、体液吸収用シート２製造中に、繊維長が短過ぎて繊維同士が交絡し難くなり、強度、厚みがでない。８０ｍｍを超える場合、体液吸収用シート２製造中に、繊維長が長過ぎて繊維同士が絡まり易くなり、不織布を均一に形成し難くなる。熱融着性繊維の繊維長としては、１０～６０ｍｍが好ましく、２０～４０ｍｍがより好ましい。それに対応して、熱融着性繊維の平均繊維長は、例えば１５～５０ｍｍが挙げられ、２０～４５ｍｍが好ましく、２５～４０ｍｍがより好ましい。熱融着性繊維が長繊維の場合、不織布層２ａにおいて、繊維の端部が少なくなり、滑らかで強度が強くなる。 The fineness of the heat-bondable fiber of the nonwoven fabric layer 2a is not particularly limited, and examples thereof include 1 to 10 dtex. The heat-fused fiber of the nonwoven fabric layer 2a may be either a short fiber or a long fiber (example: spunmelt nonwoven fabric). When the heat-sealing fiber is a short fiber, the fiber length is not particularly limited, and examples thereof include 2 to 80 mm. If it is less than 2 mm, the fiber length is too short and the fibers are difficult to entangle with each other during the production of the body fluid absorbing sheet 2, and the strength and thickness are not sufficient. If it exceeds 80 mm, the fiber length is too long and the fibers tend to be entangled with each other during the production of the body fluid absorbing sheet 2, and it becomes difficult to uniformly form the non-woven fabric. The fiber length of the heat-sealing fiber is preferably 10 to 60 mm, more preferably 20 to 40 mm. Correspondingly, the average fiber length of the heat-sealing fibers is, for example, 15 to 50 mm, preferably 20 to 45 mm, and more preferably 25 to 40 mm. When the heat-sealing fiber is a long fiber, the non-woven fabric layer 2a has fewer ends of the fiber, and is smooth and strong.

なお、不織布層２ａが複数の非熱融着性繊維を含む場合、非熱融着性繊維の繊度、繊維長、平均繊維長も、熱融着性繊維の交絡に悪影響を与えない観点から、熱融着性繊維と同程度（０．５～４倍の範囲内）が好ましい。ただし、本実施形態では非熱融着性繊維は用いない。 When the nonwoven fabric layer 2a contains a plurality of non-heat-fused fibers, the fineness, fiber length, and average fiber length of the non-heat-fused fibers do not adversely affect the entanglement of the heat-fused fibers. It is preferably about the same as the heat-sealing fiber (within the range of 0.5 to 4 times). However, in this embodiment, non-heat-fused fibers are not used.

親水性繊維層２ｂの親水性繊維の繊度は、特に制限されず、例えば１～８ｄｔｅｘが挙げられる。ただし、不織布層２ａの熱融着性繊維と親水性繊維層２ｂの親水性繊維との絡み合いの容易性などの観点から、親水性繊維層２ｂの親水性繊維の繊度は、不織布層２ａの熱融着性繊維の繊度よりも小さい（細い繊維径である）ことが好ましい。親水性繊維層２ｂの親水性繊維の繊維長は、特に制限されず、例えば１～６０ｍｍが挙げられる。１ｍｍ未満の場合、体液吸収用シート２製造中に、繊維長が短過ぎて繊維同士が交絡し難く、繊維が不織布層２ａ側へ突出し難くなる。６０ｍｍを超える場合、体液吸収用シート２製造中に、繊維同士が絡まって均一な層を形成し難くなる。親水性繊維の繊維長としては、２５～５５ｍｍが好ましく、３５～５０ｍｍがより好ましい。親水性繊維の平均繊維長は、それに対応して、例えば３～５５ｍｍが挙げられ、３０～５０ｍｍが好ましく、３５～４５ｍｍがより好ましい。 The fineness of the hydrophilic fiber of the hydrophilic fiber layer 2b is not particularly limited, and examples thereof include 1 to 8 dtex. However, from the viewpoint of ease of entanglement between the heat-sealing fibers of the nonwoven fabric layer 2a and the hydrophilic fibers of the hydrophilic fiber layer 2b, the fineness of the hydrophilic fibers of the hydrophilic fiber layer 2b is the heat of the nonwoven fabric layer 2a. It is preferably smaller than the fineness of the fusible fiber (fine fiber diameter). The fiber length of the hydrophilic fiber of the hydrophilic fiber layer 2b is not particularly limited, and examples thereof include 1 to 60 mm. If it is less than 1 mm, the fiber length is too short and the fibers are difficult to be entangled with each other during the production of the body fluid absorbing sheet 2, and the fibers are difficult to protrude toward the non-woven fabric layer 2a. If it exceeds 60 mm, it becomes difficult for the fibers to be entangled with each other to form a uniform layer during the production of the body fluid absorbing sheet 2. The fiber length of the hydrophilic fiber is preferably 25 to 55 mm, more preferably 35 to 50 mm. Correspondingly, the average fiber length of the hydrophilic fiber may be, for example, 3 to 55 mm, preferably 30 to 50 mm, and more preferably 35 to 45 mm.

なお、親水性繊維層２ｂは、親水性繊維以外の繊維を、含んでもよい。親水性繊維層２ｂにおける親水性繊維以外の繊維の繊度、繊維長、平均繊維長も、親水性繊維の交絡に悪影響を与えない観点から、親水性繊維と同程度（０．５～４倍の範囲内）が好ましい。ただし、本実施形態では親水性繊維以外の繊維は用いない。 The hydrophilic fiber layer 2b may contain fibers other than the hydrophilic fibers. The fineness, fiber length, and average fiber length of the fibers other than the hydrophilic fibers in the hydrophilic fiber layer 2b are also about the same as those of the hydrophilic fibers (0.5 to 4 times) from the viewpoint of not adversely affecting the entanglement of the hydrophilic fibers. Within the range) is preferable. However, in this embodiment, fibers other than hydrophilic fibers are not used.

不織布層２ａ及び親水性繊維層２ｂの各々の厚さは、特に制限されないが、例えば０．１～４ｍｍが挙げられ、０．２～３ｍｍが好ましく、０．２～２ｍｍがより好ましい。また、体液吸収用シート２の厚みは、特に制限されないが、例えば０．２～６ｍｍが挙げられ、０．４～４ｍｍが好ましく、０．５～３ｍｍがより好ましい。主に吸収性能等（下限）と着用感等（上限）との観点からである。 The thickness of each of the nonwoven fabric layer 2a and the hydrophilic fiber layer 2b is not particularly limited, but examples thereof include 0.1 to 4 mm, preferably 0.2 to 3 mm, and more preferably 0.2 to 2 mm. The thickness of the body fluid absorbing sheet 2 is not particularly limited, but may be, for example, 0.2 to 6 mm, preferably 0.4 to 4 mm, and more preferably 0.5 to 3 mm. This is mainly from the viewpoint of absorption performance (lower limit) and wearing feeling (upper limit).

不織布層２ａ及び親水性繊維層２ｂの各々の坪量は、特に制限されないが、例えば５～３００ｇ／ｍ２が挙げられ、８～２００ｇ／ｍ２が好ましく、１０～１００ｇ／ｍ２がより好ましい。また、体液吸収用シート２の坪量は、特に制限されないが、例えば１０～５００ｇ／ｍ２が挙げられ、１５～３００ｇ／ｍ２が好ましく、２０～２００ｇ／ｍ２がより好ましい。主に吸収性能等（下限）と着用感等（上限）との観点からである。 The basis weight of each of the nonwoven fabric layer 2a and the hydrophilic fiber layer 2b is not particularly limited, but examples thereof include 5 to 300 g / m 2 , preferably 8 to 200 g / m 2 , and more preferably 10 to 100 g / m 2 . .. The basis weight of the body fluid absorbing sheet 2 is not particularly limited, but examples thereof include 10 to 500 g / m 2 , preferably 15 to 300 g / m 2 , and more preferably 20 to 200 g / m 2 . This is mainly from the viewpoint of absorption performance (lower limit) and wearing feeling (upper limit).

不織布層２ａと親水性繊維層２ｂとは、交絡により互いに接合されている。その交絡方法、すなわち、体液吸収用シート２の製造方法については後述される。 The non-woven fabric layer 2a and the hydrophilic fiber layer 2b are joined to each other by entanglement. The entanglement method, that is, the method for manufacturing the body fluid absorbing sheet 2 will be described later.

本実施形態において、体液吸収用シート２の吸収性能（吸汗性、吸収速度）、液捌け性、及びリウェットの性能は以下のとおりである。吸汗性については、後述される試験方法において、１回目、２回目共に０．０５ｇ以上であることが好ましく、０．０８ｇ以上であることが好ましい。吸収速度については、後述される試験方法において、１回目、２回目共に１０秒以下であることが好ましく、５秒以下であることがより好ましい。液捌け性については、後述される試験方法において、１回目、２回目共に２５秒以下であることが好ましく、２０秒以下であることがより好ましい。リウェットの性能については、後述される試験方法において、０．８ｇ以下、２０％以下であることが好ましく、０．５ｇ以下、１５％以下がより好ましい。 In the present embodiment, the absorption performance (sweat absorption property, absorption rate), liquid release property, and rewet performance of the body fluid absorption sheet 2 are as follows. Regarding the sweat absorption property, in the test method described later, it is preferable that the amount is 0.05 g or more, and preferably 0.08 g or more for both the first and second times. Regarding the absorption rate, in the test method described later, it is preferably 10 seconds or less for both the first and second times, and more preferably 5 seconds or less. Regarding the liquid resolvability, in the test method described later, it is preferably 25 seconds or less for both the first and second times, and more preferably 20 seconds or less. Regarding the rewet performance, in the test method described later, it is preferably 0.8 g or less and 20% or less, and more preferably 0.5 g or less and 15% or less.

本実施形態では、図３に示すように、体液吸収用シート２は、平面視で、第１面２Ｓ１に分散的に配置された複数の低坪量部ＬＢと、複数の低坪量部ＬＢの各々に隣接する少なくとも一つの高坪量部ＨＢと、を有している。本実施形態では、平面視で、低坪量部ＬＢが第１面２Ｓ１に縦・横それぞれ概ね所定間隔で配置され、高坪量部ＨＢが第１面２Ｓ１に複数の低坪量部ＬＢの各々を囲むように配置されている。すなわち、平面視で、高坪量部ＨＢの中に、複数の低坪量部ＬＢが概ね格子状に分散されて配置されている。ただし、複数の低坪量部ＬＢと少なくとも一つの高坪量部ＨＢとの関係はその例に限定されず、例えば、高坪量部ＨＢの中に、複数の低坪量部ＬＢが概ね互い違いな千鳥状の格子状に分散されて配置されていてもよいし、複数の低坪量部ＬＢと複数の高坪量部ＨＢとが、互い違いに概ね市松模様のように並んでいてもよい。 In the present embodiment, as shown in FIG. 3, the body fluid absorbing sheet 2 has a plurality of low basis weight portions LB dispersedly arranged on the first surface 2S1 and a plurality of low basis weight portions LB in a plan view. It has at least one high basis weight portion HB, which is adjacent to each of the above. In the present embodiment, in a plan view, the low basis weight portions LB are arranged on the first surface 2S1 at approximately predetermined intervals in the vertical and horizontal directions, and the high basis weight portion HB is provided on the first surface 2S1 with a plurality of low basis weight portions LB. They are arranged so as to surround each. That is, in a plan view, a plurality of low basis weight portions LB are arranged in a substantially lattice pattern in the high basis weight portion HB. However, the relationship between the plurality of low basis weight portions LB and at least one high basis weight portion HB is not limited to the example. It may be distributed and arranged in a staggered grid pattern, or a plurality of low basis weight portions LB and a plurality of high basis weight portions HB may be arranged alternately in a substantially checkered pattern.

ここで、低坪量部ＬＢは、高坪量部ＨＢよりも坪量の小さい部分であり、具体的には、平面視で、高坪量部ＨＢの最大坪量の１／２以下の坪量を有する領域をいう。本実施形態では、低坪量部ＬＢの平面視の形状は略円形であるが、この例に制限されず、例えば、略楕円形、略矩形（角が丸い場合を含む）、略菱形（角が丸い場合を含む）などでもよい。また、高坪量部ＨＢの平面視の形状も、同様に、この例に制限されず、上記の各種の形状でもよい。また、高坪量部ＨＢ及び低坪量部ＬＢの各々は、いずれも厚さ方向Ｔに概ね連続しており、したがって、いずれも厚さ方向Ｔに不織布層２ａ及び親水性繊維層２ｂを含んでいる。本実施形態では、複数の低坪量部ＬＢの少なくとも一つは、坪量がゼロの部分を含んでおり、すなわち、第１面２Ｓ１から第２面２Ｓ２まで貫通する貫通孔Ｈを含んでいる。 Here, the low basis weight portion LB is a portion having a smaller basis weight than the high basis weight portion HB, and specifically, in a plan view, the basis weight is 1/2 or less of the maximum basis weight of the high basis weight portion HB. A region with a quantity. In the present embodiment, the shape of the low basis weight portion LB in a plan view is substantially circular, but is not limited to this example, and is not limited to this example. (Including the case where is round) may be used. Similarly, the shape of the high basis weight portion HB in a plan view is not limited to this example, and may be various shapes as described above. Further, each of the high basis weight portion HB and the low basis weight portion LB is substantially continuous in the thickness direction T, and therefore both include the non-woven fabric layer 2a and the hydrophilic fiber layer 2b in the thickness direction T. I'm out. In the present embodiment, at least one of the plurality of low basis weight portions LB includes a portion having a basis weight of zero, that is, includes a through hole H penetrating from the first surface 2S1 to the second surface 2S2. ..

体液吸収用シート２の第２面２Ｓ２側に位置する親水性繊維層２ｂの複数の親水性繊維３０の一部は、体液吸収用シート２の第１面２Ｓ１側に位置する不織布層２ａの高坪量部ＨＢを貫通している。したがって、親水性繊維層２ｂの複数の親水性繊維３０の一部は、高坪量部ＨＢの複数の熱融着性繊維２０の間を通って、第１面２Ｓ１に露出している。親水性繊維３０が貫通する高坪量部ＨＢの部分における厚さ方向Ｔに垂直な断面は、概ね一定である必要はなく、特に限定されるものではない。 A part of the plurality of hydrophilic fibers 30 of the hydrophilic fiber layer 2b located on the second surface 2S2 side of the body fluid absorbing sheet 2 is the height of the non-woven fabric layer 2a located on the first surface 2S1 side of the body fluid absorbing sheet 2. It penetrates the basis weight part HB. Therefore, a part of the plurality of hydrophilic fibers 30 of the hydrophilic fiber layer 2b passes between the plurality of heat-sealing fibers 20 of the high basis weight portion HB and is exposed on the first surface 2S1. The cross section perpendicular to the thickness direction T in the portion of the high basis weight portion HB through which the hydrophilic fiber 30 penetrates does not have to be substantially constant and is not particularly limited.

本実施形態では、親水性繊維層２ｂの複数の親水性繊維３０の一部は、第１面２Ｓ１において、低坪量部ＬＢの方よりも高坪量部ＨＢにおいて多く露出している。特に、本実施形態では、高坪量部ＨＢにおける低坪量部ＬＢの近傍の近傍領域ＨＢ１の方が、高坪量部ＨＢにおける低坪量部ＬＢから離れた離間領域ＨＢ２よりも、第１面２Ｓ１に露出している親水性繊維３０が多くなっている。 In the present embodiment, a part of the plurality of hydrophilic fibers 30 of the hydrophilic fiber layer 2b is exposed more in the high basis weight portion HB than in the low basis weight portion LB on the first surface 2S1. In particular, in the present embodiment, the vicinity region HB1 in the vicinity of the low basis weight portion LB in the high basis weight portion HB is the first than the separated region HB2 away from the low basis weight portion LB in the high basis weight portion HB. The number of hydrophilic fibers 30 exposed on the surface 2S1 is increased.

本実施形態では、第１面２Ｓ１に露出している複数の親水性繊維３０の一部は、第１面２Ｓ１から、厚さ方向Ｔの外側に向って突出する複数の突出親水性繊維３０ｐを含んでいる。ただし、親水性繊維３０が第１面２Ｓ１から厚さ方向Ｔの外側に突出するとは、第１面２Ｓ１における厚さ方向Ｔの最も外側に位置する熱融着性繊維２０よりも外側に親水性繊維３０が位置することをいう。その複数の突出親水性繊維３０ｐの一部は、第１面２Ｓ１から、厚さ方向Ｔの外側に向って凸な弧状に突出している。ただし、親水性繊維３０が第１面２Ｓ１から厚さ方向Ｔの外側に向って凸な弧状に突出するとは、例えば、親水性繊維３０が厚さ方向Ｔの外側に向って、頂部を有する山の形の外縁を描くように、あるいは、頂部を有するヘアピンの形やループの形を描くように突出する場合を含んでいる。 In the present embodiment, a part of the plurality of hydrophilic fibers 30 exposed on the first surface 2S1 has a plurality of protruding hydrophilic fibers 30p protruding outward in the thickness direction T from the first surface 2S1. Includes. However, the fact that the hydrophilic fiber 30 protrudes from the first surface 2S1 to the outside in the thickness direction T means that the hydrophilic fiber 30 is hydrophilic to the outside of the heat-sealing fiber 20 located on the outermost side in the thickness direction T on the first surface 2S1. It means that the fiber 30 is located. A part of the plurality of protruding hydrophilic fibers 30p protrudes from the first surface 2S1 in a convex arc shape toward the outside in the thickness direction T. However, when the hydrophilic fiber 30 projects from the first surface 2S1 in a convex arc shape toward the outside in the thickness direction T, for example, the hydrophilic fiber 30 faces the outside in the thickness direction T and has a peak. It includes the case of projecting to draw the outer edge of the shape of, or to draw the shape of a hairpin having a top or the shape of a loop.

次に、実施形態に係る体液吸収用シートの製造方法について説明する。図４～図６は、実施形態に係る体液吸収用シートの製造方法を説明する図である。図４（ａ）は、その製造方法で用いる支持体５０の構成例を示す平面図であり、図４（ｂ）は図４（ａ）におけるＩＶｂ－ＩＶｂ線に沿った断面図である。図５（ａ）～図５（ｃ）は、体液吸収用シートの製造方法の各工程を説明する模式図である。図６は、体液吸収用シートの製造過程を説明する模式図である。ただし、いずれの図においても個々の繊維は明示されていない。 Next, a method for manufacturing the body fluid absorption sheet according to the embodiment will be described. 4 to 6 are diagrams illustrating a method for manufacturing a body fluid absorbing sheet according to an embodiment. FIG. 4A is a plan view showing a configuration example of the support 50 used in the manufacturing method, and FIG. 4B is a cross-sectional view taken along the line IVb-IVb in FIG. 4A. 5 (a) to 5 (c) are schematic views illustrating each step of a method for manufacturing a body fluid absorbing sheet. FIG. 6 is a schematic diagram illustrating a manufacturing process of a body fluid absorbing sheet. However, individual fibers are not specified in any of the figures.

体液吸収用シート２である体液吸収用シート１０２は、不織布層２ａとなる不織布層１０２ａと、親水性繊維層２ｂとなる繊維ウェブ１０２ｂ’とを交絡することで製造される。図４は、その交絡のとき、不織布層１０２ａと繊維ウェブ１０２ｂ’とを積層して載置する支持体５０の構成例を示している。支持体５０は、メッシュ状の支持部材で形成されており、不織布層１０２ａ及び繊維ウェブ１０２ｂ’が載置される側の表面に設けられた複数の突出部５１と、複数の突出部５１に隣接する複数の貫通口５２と、を有している。本実施形態では、支持体５０は、細線状の支持部材（例示：樹脂線、金属線）が平織網状又は綾織網状に配置されたメッシュで形成されている。この場合、突出部５１は、メッシュにおける、細線状の支持部材が相対的に上方へ突出した部分である。貫通口５２は、メッシュにおける、網目の部分である。なお、支持体５０の構成は、この例に限定されず、例えば、支持板（例示：樹脂板、金属板）に複数の貫通口を設け、支持板の表面における貫通口の無い箇所に複数の突出部を設けた支持体が挙げられる。 The body fluid absorbing sheet 102, which is the body fluid absorbing sheet 2, is manufactured by entwining the nonwoven fabric layer 102a, which is the nonwoven fabric layer 2a, with the fiber web 102b', which is the hydrophilic fiber layer 2b. FIG. 4 shows a configuration example of the support 50 on which the nonwoven fabric layer 102a and the fiber web 102b'are laminated and placed at the time of entanglement. The support 50 is formed of a mesh-shaped support member, and is adjacent to a plurality of protrusions 51 provided on the surface on the side on which the nonwoven fabric layer 102a and the fiber web 102b'are placed, and the plurality of protrusions 51. It has a plurality of through holes 52 and the like. In the present embodiment, the support 50 is formed of a mesh in which fine wire-shaped support members (eg, resin wire, metal wire) are arranged in a plain weave net or a twill net. In this case, the protruding portion 51 is a portion of the mesh in which the fine line-shaped support member projects relatively upward. The through hole 52 is a mesh portion of the mesh. The configuration of the support 50 is not limited to this example. For example, a support plate (eg, a resin plate, a metal plate) is provided with a plurality of through-holes, and a plurality of through-holes are provided on the surface of the support plate where there is no through-hole. A support provided with a protrusion may be mentioned.

本実施形態に係る、第１面１０２Ｓ１と第２面１０２Ｓ２とを有する体液吸収用シート１０２の製造方法は、以下のとおりである。 The method for manufacturing the body fluid absorbing sheet 102 having the first surface 102S1 and the second surface 102S2 according to the present embodiment is as follows.

まず、互いに熱融着された複数の熱融着性繊維を含み、一方の面が第１面１０２Ｓ１を構成する不織布層１０２ａを準備する（準備工程）。不織布層１０２ａは、例えば、複数の熱融着性繊維を含む繊維を用いてウェブを形成し、エアスルー法により、そのウェブの複数の熱融着性繊維同士を互いに接点で熱融着させることで形成される。ただし、そのウェブは、カード法、メルトブローン法、スパンボンド法、エアレイド法などで形成できる。不織布層１０２ａは、複数の熱融着性繊維による骨格構造（マトリックス）を有しており、実質的には不織布層２ａである。 First, a nonwoven fabric layer 102a containing a plurality of heat-sealing fibers heat-sealed to each other and one surface of which constitutes the first surface 102S1 is prepared (preparation step). The nonwoven fabric layer 102a is formed by, for example, forming a web using fibers containing a plurality of heat-sealing fibers, and heat-sealing the plurality of heat-sealing fibers of the web at contact points by an air-through method. It is formed. However, the web can be formed by the card method, the melt blow method, the spunbond method, the airlaid method, or the like. The non-woven fabric layer 102a has a skeleton structure (matrix) composed of a plurality of heat-sealing fibers, and is substantially the non-woven fabric layer 2a.

次いで、図５（ａ）に示すように、メッシュ状の支持体５０の表面に、不織布層１０２ａの一方の面が接し、不織布層１０２ａの他方の面に、複数の親水性繊維を含む繊維ウェブ１０２ｂ’の一方の面が接するように、支持体５０に不織布層１０２ａ及び繊維ウェブ１０２ｂ’を載置する（載置工程）。ただし、繊維ウェブ１０２ｂ’は、複数の親水性繊維を含む繊維を用いて、カード法、エアレイド法などで形成できる。それにより、不織布層１０２ａ及び繊維ウェブ１０２ｂ’を備える体液吸収用シート１０２’は、その第１面１０２Ｓ１が支持体５０に接するように、支持体５０に載置される。 Next, as shown in FIG. 5A, one surface of the nonwoven fabric layer 102a is in contact with the surface of the mesh-shaped support 50, and the other surface of the nonwoven fabric layer 102a is a fiber web containing a plurality of hydrophilic fibers. The nonwoven fabric layer 102a and the fiber web 102b'are placed on the support 50 so that one surface of the 102b'is in contact with each other (placement step). However, the fiber web 102b'can be formed by a card method, an airlaid method, or the like using a fiber containing a plurality of hydrophilic fibers. As a result, the body fluid absorbing sheet 102'with the nonwoven fabric layer 102a and the fiber web 102b'is placed on the support 50 so that its first surface 102S1 is in contact with the support 50.

次いで、図５（ｂ）に示すように、不織布層１０２ａ上に載置された繊維ウェブ１０２ｂ’の他方の面（体液吸収用シート１０２’の第２面１０２Ｓ２）に向かって水流ｗを噴射し、繊維ウェブ１０２ｂ’の複数の親水性繊維を不織布層１０２ａの複数の熱融着性繊維に交絡させる。それにより、複数の親水性繊維を含み、一方の面が不織布層１０２ａの他方の面に隣接し、他方の面が第２面１０２Ｓ２を構成する親水性繊維層１０２ｂが形成される（交絡工程）。すなわち、不織布層１０２ａ及び親水性繊維層１０２ｂを備える体液吸収用シート１０２が形成される。その交絡工程において、親水性繊維層１０２ｂの複数の親水性繊維の一部は、その水流交絡により、それぞれ不織布層１０２ａを貫通して第１面１０２Ｓ１に露出することになる。なお、ここでは交絡方法として、水流交絡（例示：スパンレース法又はウォータージェット法）を用いているが、交絡方法はこの例に制限されず、他の交絡方法、例えばスチームジェット法、ニードルパン法を用いてもよい。 Next, as shown in FIG. 5B, the water flow w is jetted toward the other surface of the fiber web 102b'placed on the nonwoven fabric layer 102a (the second surface 102S2 of the body fluid absorbing sheet 102'). , The plurality of hydrophilic fibers of the fiber web 102b'are entangled with the plurality of heat-sealing fibers of the nonwoven fabric layer 102a. As a result, a hydrophilic fiber layer 102b containing a plurality of hydrophilic fibers, one surface adjacent to the other surface of the nonwoven fabric layer 102a and the other surface forming the second surface 102S2 is formed (entanglement step). .. That is, the body fluid absorption sheet 102 including the non-woven fabric layer 102a and the hydrophilic fiber layer 102b is formed. In the entanglement step, a part of the plurality of hydrophilic fibers of the hydrophilic fiber layer 102b is exposed to the first surface 102S1 through the nonwoven fabric layer 102a due to the water flow entanglement. Although water flow entanglement (example: span race method or water jet method) is used here as the entanglement method, the entanglement method is not limited to this example, and other entanglement methods such as steam jet method and needle pan method are used. May be used.

ただし、水流交絡の条件としては、搬送速度：１０ｍ／ｍｉｎ．水流の単位時間当たりの量：０．０５～０．２ｍ３/ｍｉｎ，水流の圧力：７ＭＰａ（第１ノズル）＋１０ＭＰａ（第２ノズル）、第１、第２ノズルのノズル口径：８０～１２０μｍ、ノズルピッチ：０．５～２ｍｍ、２～４列、とした。水流交絡後に得られたシートを１２０～１３０℃で乾燥した。 However, as a condition of water flow confounding, the transport speed: 10 m / min. Amount of water flow per unit time: 0.05 to 0.2 m 3 / min, water flow pressure: 7 MPa (first nozzle) + 10 MPa (second nozzle), nozzle diameters of the first and second nozzles: 80 to 120 μm, Nozzle pitch: 0.5 to 2 mm, 2 to 4 rows. The sheet obtained after confounding with water flow was dried at 120-130 ° C.

このとき、本実施形態では、図５（ｃ）に示すように、水流ｗのうち、第２面１０２Ｓ２における支持体５０の支持部材（例示：樹脂線、金属線）の上方領域に噴射された水流は、繊維ウェブ１０２ｂ’から不織布層１０２ａへ厚さ方向に移動するに連れて、金属線の上方領域から、貫通口５２の上方領域へ横方向に移動する。そして、貫通口５２の上方領域へ移動した水流は、支持体５０の貫通口５２付近の上方領域に噴射された水流と共に、貫通口５２を介して、支持体５０の裏側へ送出される。その際、噴射された水流が突出部５１に衝突することにより、不織布層１０２ａの熱融着性繊維２０が水流でかき分けられ易くなる。それにより、熱融着性繊維２０が水流でかき分けられたところに、繊維ウェブ１０２ｂ’の親水性繊維３０を進入し易くできる。そして、繊維ウェブ１０２ｂ’が親水性繊維層１０２ｂとなり、不織布層１０２ａと親水性繊維層１０２ｂをと備える体液吸収用シート１０２が形成される。 At this time, in the present embodiment, as shown in FIG. 5C, the water flow w was sprayed onto the upper region of the support member (eg, resin wire, metal wire) of the support 50 on the second surface 102S2. As the water flow moves from the fiber web 102b'to the nonwoven fabric layer 102a in the thickness direction, it moves laterally from the upper region of the metal wire to the upper region of the through-hole 52. Then, the water flow that has moved to the upper region of the through-port 52 is sent out to the back side of the support 50 via the through-port 52 together with the water flow jetted to the upper region near the through-port 52 of the support 50. At that time, the jetted water flow collides with the protruding portion 51, so that the heat-sealing fibers 20 of the nonwoven fabric layer 102a are easily separated by the water flow. As a result, the hydrophilic fibers 30 of the fiber web 102b'can easily enter the place where the heat-sealing fibers 20 are separated by the water flow. Then, the fiber web 102b'becomes a hydrophilic fiber layer 102b, and a body fluid absorption sheet 102 including the non-woven fabric layer 102a and the hydrophilic fiber layer 102b is formed.

その際、支持体５０（の突出部５１）の表面が、不織布層１０２ａの第１面１０２Ｓ１と接しているため、支持体５０の突出部５１の上方領域に噴射された水流ｗは、支持体５０（の突出部５１）の表面に平行な方向、すなわち第１面１０２Ｓ１に平行な方向に向かい易くなる。その結果、突出部５１の上方領域に位置する親水性繊維３０や熱融着性繊維２０は、貫通口５２の方向へ移動するように交絡される。そのため、貫通口５２の上方領域の繊維は、元々貫通口５２の上方領域に存在した繊維に加えて、突出部５１の上方領域に位置する繊維が加わるため、図６に示すように、繊維が多くなる。そのため、主に貫通口５２の上方領域の付近やその周辺領域に高坪量部ＨＢが形成される。一方、支持体５０の突出部５１の上方領域の繊維は、貫通口５２の上方領域に移動してしまうため、図６に示すように、繊維が少なくなる。そのため、主に突出部５１の上方領域の付近、に低坪量部ＬＢ、更には貫通孔Ｈが形成される。 At that time, since the surface of the support 50 (protruding portion 51) is in contact with the first surface 102S1 of the nonwoven fabric layer 102a, the water flow w sprayed on the upper region of the protruding portion 51 of the support 50 is the support. It becomes easy to go in a direction parallel to the surface of 50 (the protrusion 51), that is, a direction parallel to the first surface 102S1. As a result, the hydrophilic fibers 30 and the heat-sealing fibers 20 located in the upper region of the protrusion 51 are entangled so as to move in the direction of the through port 52. Therefore, as the fiber in the upper region of the through-hole 52, in addition to the fiber originally existing in the upper region of the through-hole 52, the fiber located in the upper region of the protrusion 51 is added, so that the fiber is formed as shown in FIG. Will increase. Therefore, the high basis weight portion HB is formed mainly in the vicinity of the upper region of the through port 52 and in the peripheral region thereof. On the other hand, the fibers in the upper region of the protrusion 51 of the support 50 move to the upper region of the through hole 52, so that the number of fibers is reduced as shown in FIG. Therefore, a low basis weight portion LB and a through hole H are formed mainly in the vicinity of the upper region of the protrusion 51.

以上の製造方法により、実施形態に係る体液吸収用シート１０２、すなわち図１～図3を参照して説明された構成を有する体液吸収用シート２が製造される。 By the above manufacturing method, the body fluid absorption sheet 102 according to the embodiment, that is, the body fluid absorption sheet 2 having the configuration described with reference to FIGS. 1 to 3 is manufactured.

本体液吸収用シート２では、不織布層２ａの複数の熱融着性繊維２０が互いに熱融着されており、かつ、親水性繊維層２ｂの複数の親水性繊維３０の一部がそれぞれ不織布層２ａを貫通して表面、すなわち第１面２Ｓ１に露出している。
それゆえ、不織布層２ａが複数の熱融着性繊維２０による骨格構造を維持できるので、不織布層２ａ内に熱融着性繊維２０同士間の空隙を多く保持できる。そして、第１面２Ｓ１に排出された体液を、複数の親水性繊維３０により不織布層２ａ内の熱融着性繊維２０同士間の空隙へ素早く導くことができ、更に親水性繊維層２ｂへ素早く導くことができる。したがって、体液吸収用シート２では、第１面２Ｓ１に排出された体液を短時間で吸収し易くでき、体液を第１面２Ｓ１から素早く捌け易くできる。
また、体液吸収用シート２では、複数の親水性繊維３０の一部が、それぞれ不織布層２ａを貫通して第１面２Ｓ１に露出している。言い換えれば、複数の親水性繊維３０が束にならずに、分散しつつ、不織布層２ａを貫通して第１面２Ｓ１に達している。そのため、体液吸収用シート２に体液が吸収され、複数の親水性繊維３０に体液が保持されたとしても、第１面２Ｓ１の複数の親水性繊維３０に保持された体液により表面がべたべたすることや、リウェットが生じることを、起こり難くすることができる。
したがって、体液吸収用シート２では、体液が第１面２Ｓ１に戻り難くすることができる。よって、体液吸収用シート２により、吸収性能（吸汗性、吸収速度）が高く、液捌け性が高く、リウェットし難くすることができる。 In the main body liquid absorbing sheet 2, the plurality of heat-sealing fibers 20 of the non-woven fabric layer 2a are heat-sealed to each other, and a part of the plurality of hydrophilic fibers 30 of the hydrophilic fiber layer 2b is each non-woven fabric layer. It penetrates 2a and is exposed to the surface, that is, the first surface 2S1.
Therefore, since the nonwoven fabric layer 2a can maintain the skeleton structure of the plurality of heat-sealing fibers 20, a large number of voids between the heat-sealing fibers 20 can be maintained in the nonwoven fabric layer 2a. Then, the body fluid discharged to the first surface 2S1 can be quickly guided to the voids between the heat-sealing fibers 20 in the nonwoven fabric layer 2a by the plurality of hydrophilic fibers 30, and further quickly to the hydrophilic fiber layer 2b. Can be guided. Therefore, in the body fluid absorption sheet 2, the body fluid discharged to the first surface 2S1 can be easily absorbed in a short time, and the body fluid can be easily separated from the first surface 2S1.
Further, in the body fluid absorbing sheet 2, a part of the plurality of hydrophilic fibers 30 penetrates the nonwoven fabric layer 2a and is exposed on the first surface 2S1. In other words, the plurality of hydrophilic fibers 30 penetrate the non-woven fabric layer 2a and reach the first surface 2S1 while being dispersed without being bundled. Therefore, even if the body fluid is absorbed by the body fluid absorbing sheet 2 and the body fluid is held by the plurality of hydrophilic fibers 30, the surface is sticky due to the body fluid held by the plurality of hydrophilic fibers 30 on the first surface 2S1. Or, it is possible to make it difficult for rewetting to occur.
Therefore, in the body fluid absorption sheet 2, it is possible to make it difficult for the body fluid to return to the first surface 2S1. Therefore, the body fluid absorbing sheet 2 has high absorption performance (sweat absorption property, absorption rate), high liquid handling property, and can be made difficult to rewet.

本実施形態の好ましい態様では、体液吸収用シート２において、複数の親水性繊維３０の一部は、高坪量部ＨＢの第１面２Ｓ１に露出している。それにより、第１面２Ｓ１に排出された体液を、露出した親水性繊維３０で体液を吸収し易い高坪量部ＨＢの不織布層２ａへ素早く導き、更に高坪量部ＨＢの親水性繊維層２ｂへ素早く導くことができる。したがって、体液吸収用シート２では、第１面２Ｓ１に排出された体液をより短時間で吸収し易くでき、体液を第１面２Ｓ１からより素早く捌け易くできる。また、体液吸収用シート２では、複数の低坪量部ＬＢを有している。ここで、低坪量部ＬＢでは、吸収され、保持され得る体液の量が少ない。そのため、体液吸収用シート２に体液が吸収されても、複数の低坪量部ＬＢの分だけ、表面の親水性繊維３０に保持された体液により表面がべたべたすることや、リウェットが生じることを、より起こり難くすることができる。 In a preferred embodiment of the present embodiment, in the body fluid absorbing sheet 2, a part of the plurality of hydrophilic fibers 30 is exposed on the first surface 2S1 of the high basis weight portion HB. As a result, the body fluid discharged to the first surface 2S1 is quickly guided to the non-woven fabric layer 2a of the high basis weight portion HB, which is easily absorbed by the exposed hydrophilic fibers 30, and further, the hydrophilic fiber layer of the high basis weight portion HB. You can quickly lead to 2b. Therefore, in the body fluid absorption sheet 2, the body fluid discharged to the first surface 2S1 can be easily absorbed in a shorter time, and the body fluid can be easily separated from the first surface 2S1. Further, the body fluid absorbing sheet 2 has a plurality of low basis weight portions LB. Here, in the low basis weight portion LB, the amount of body fluid that can be absorbed and retained is small. Therefore, even if the body fluid is absorbed by the body fluid absorbing sheet 2, the surface becomes sticky or rewetting occurs due to the body fluid held by the hydrophilic fibers 30 on the surface by the amount of the plurality of low basis weight portions LB. , Can be less likely to occur.

本実施形態の好ましい態様では、体液吸収用シート２において、高坪量部ＨＢにおける低坪量部ＬＢの近傍の近傍領域ＨＢ１の方が、高坪量部ＨＢにおける低坪量部ＬＢから離れた離間領域ＨＢ２よりも、第１面２Ｓ１に露出している親水性繊維３０が多くなっている。このように、高坪量部ＨＢにおける（高坪量部ＨＢと比較して相対的に体液の吸収が遅い）低坪量部ＬＢの近傍に親水性繊維３０を多く配置することで、低坪量部ＬＢでの吸収の遅れを補助することができる。 In a preferred embodiment of the present embodiment, in the body fluid absorbing sheet 2, the near region HB1 in the vicinity of the low basis weight portion LB in the high basis weight portion HB is separated from the low basis weight portion LB in the high basis weight portion HB. The number of hydrophilic fibers 30 exposed on the first surface 2S1 is larger than that of the separated region HB2. In this way, by arranging a large number of hydrophilic fibers 30 in the vicinity of the low basis weight portion LB (the absorption of body fluid is relatively slow compared to the high basis weight portion HB) in the high basis weight portion HB, the low basis weight is created. It is possible to assist the delay in absorption in the quantity part LB.

本実施形態の好ましい態様では、体液吸収用シート２において、複数の低坪量部ＬＢの少なくとも一つは、第１面２Ｓ１から第２面２Ｓ２まで貫通する貫通孔Ｈを有している。それにより、第１面２Ｓ１に排出された体液を、低坪量部ＬＢの貫通孔Ｈを介して、一気に第２面２Ｓ２側の親水性繊維層２ｂへ移行させることができる。それにより、第１面２Ｓ１に排出された体液を短時間で吸収し易くでき、体液を第１面２Ｓ１から素早く捌け易くできる。 In a preferred embodiment of the present embodiment, in the body fluid absorbing sheet 2, at least one of the plurality of low basis weight portions LB has a through hole H penetrating from the first surface 2S1 to the second surface 2S2. As a result, the body fluid discharged to the first surface 2S1 can be transferred to the hydrophilic fiber layer 2b on the second surface 2S2 side at once through the through hole H of the low basis weight portion LB. As a result, the body fluid discharged to the first surface 2S1 can be easily absorbed in a short time, and the body fluid can be quickly and easily separated from the first surface 2S1.

本実施形態の好ましい態様では、体液吸収用シート２において、第１面２Ｓ１に露出している複数の親水性繊維３０の一部のうちの少なくとも一部が、第１面２Ｓ１から、厚さ方向Ｔの外側に向って突出する複数の突出親水性繊維３０ｐを含んでいる。そのため、複数の突出親水性繊維３０ｐにより、肌の表面に存在する微量の体液（例示：汗）も、素早く捕らえることができ、不織布層２ａへ素早く導き、更に親水性繊維層２ｂへ素早く導くことができる。 In a preferred embodiment of the present embodiment, in the body fluid absorbing sheet 2, at least a part of the plurality of hydrophilic fibers 30 exposed on the first surface 2S1 is in the thickness direction from the first surface 2S1. It contains a plurality of protruding hydrophilic fibers 30p protruding outward from T. Therefore, the plurality of protruding hydrophilic fibers 30p can quickly capture even a small amount of body fluid (eg, sweat) existing on the surface of the skin, and quickly lead to the non-woven fabric layer 2a and further to the hydrophilic fiber layer 2b. Can be done.

本実施形態の好ましい態様では、体液吸収用シート２において、複数の突出親水性繊維３０ｐの一部が、第１面２Ｓ１から、外側に向って凸な弧状に突出している。そのため、その突出親水性繊維３０ｐの弧の略頂部から二方向へ体液を引き込むことができるので、体液を不織布層２ａへ、より素早く導き、更に親水性繊維層２ｂへ、より素早く導くことができる。また、その突出親水性繊維３０ｐのうちの使用者の肌に当接する部分は、凸な弧状の繊維における弧の頂部であり、繊維の先端部ではないため、使用者が肌への違和感などを覚えることを抑制できる。 In a preferred embodiment of the present embodiment, in the body fluid absorbing sheet 2, a part of the plurality of protruding hydrophilic fibers 30p protrudes outward from the first surface 2S1 in a convex arc shape. Therefore, since the body fluid can be drawn in two directions from the substantially top of the arc of the protruding hydrophilic fiber 30p, the body fluid can be guided to the nonwoven fabric layer 2a more quickly and further to the hydrophilic fiber layer 2b more quickly. .. Further, the portion of the protruding hydrophilic fiber 30p that comes into contact with the skin of the user is the top of the arc in the convex arcuate fiber, not the tip of the fiber, so that the user feels uncomfortable with the skin. You can suppress remembering.

別の実施形態の好ましい態様では、体液吸収用シート２において、不織布層２ａが、熱融着しない複数の非熱融着性繊維（図示されず）を５０質量％未満で有している。その場合、不織布層２ａにおいて、複数の熱融着性繊維２０により骨格構造を維持しつつ、複数の非熱融着性繊維により変形の自由度を高めることができる。それにより、不織布層２ａにおいて、熱融着性繊維２０同士間の空隙を広く保持して、体液を不織布層２ａへ素早く導く構造を維持しつつ、不織布層２ａ、延いては体液吸収用シート２を柔らかくすることができ、体液吸収用シート２の使用感を良好にできる。 In a preferred embodiment of another embodiment, in the body fluid absorbing sheet 2, the nonwoven fabric layer 2a has a plurality of non-heat-fused fibers (not shown) that are not heat-fused in an amount of less than 50% by mass. In that case, in the nonwoven fabric layer 2a, the skeleton structure can be maintained by the plurality of heat-sealing fibers 20, and the degree of freedom of deformation can be increased by the plurality of non-heat-sealing fibers. As a result, in the nonwoven fabric layer 2a, the voids between the heat-sealing fibers 20 are widely maintained, and the structure that quickly guides the body fluid to the nonwoven fabric layer 2a is maintained, while the nonwoven fabric layer 2a and the body fluid absorbing sheet 2 are maintained. Can be softened, and the feeling of use of the body fluid absorbing sheet 2 can be improved.

本実施形態の好ましい態様では、体液吸収用シート２において、複数の熱融着性繊維２０より、複数の親水性繊維３０の方が、繊度が小さい。熱融着性繊維２０の平均繊維径が太いことにより、不織布層２ａが複数の熱融着性繊維２０による骨格構造をより維持し易く、熱融着性繊維２０同士間の空隙を広く保持し易くできる。更に、親水性繊維３０の平均繊維径が細いことにより、第１面２Ｓ１に露出した親水性繊維３０に体液が保持されたとしても、第１面２Ｓ１がべたべたすることや、リウェットが生じることを、より起こり難くすることができる。 In a preferred embodiment of the present embodiment, in the body fluid absorbing sheet 2, the plurality of hydrophilic fibers 30 have a smaller fineness than the plurality of heat-sealing fibers 20. Since the average fiber diameter of the heat-sealing fibers 20 is large, the nonwoven fabric layer 2a can more easily maintain the skeleton structure of the plurality of heat-sealing fibers 20 and keeps the voids between the heat-sealing fibers 20 wide. It can be done easily. Further, since the average fiber diameter of the hydrophilic fibers 30 is small, even if the body fluid is retained by the hydrophilic fibers 30 exposed on the first surface 2S1, the first surface 2S1 becomes sticky and rewetting occurs. , Can be less likely to occur.

本実施形態の好ましい態様では、体液吸収用シート２において、複数の親水性繊維３０は、再生セルロース繊維を含んでいる。ここで、再生セルロース繊維は再生繊維であるため、品質が均一で吸水性に優れている。そのため、体液吸収用シート２では、第１面２Ｓ１に排出された体液をより短時間で吸収し易くでき、体液を第１面２Ｓ１からより素早く捌け易くできる。 In a preferred embodiment of the present embodiment, in the body fluid absorption sheet 2, the plurality of hydrophilic fibers 30 contain regenerated cellulose fibers. Here, since the regenerated cellulose fiber is a regenerated fiber, the quality is uniform and the water absorption is excellent. Therefore, the body fluid absorbing sheet 2 can easily absorb the body fluid discharged to the first surface 2S1 in a shorter time, and can easily handle the body fluid from the first surface 2S1 more quickly.

本体液吸収用シートの製造方法では、メッシュ状の支持体５０に、互いに熱融着された複数の熱融着性繊維２０を含む不織布層１０２ａと、複数の親水性繊維３０を含む繊維ウェブ１０２ｂ’と、を順次載置し、繊維ウェブ１０２ｂ’側から水流交絡を行っている。
その際、不織布層１０２ａでは熱融着性繊維２０が予め熱融着されているので、水流交絡しても、熱融着性繊維２０による骨格構造を維持できる。それにより、製造された体液吸収用シート２（１０２）において、熱融着性繊維２０同士間の空隙を広く保持できると共に、第１面２Ｓ１に排出された体液を、複数の親水性繊維３０により不織布層２ａへ素早く導き、更に親水性繊維層２ｂへ素早く導くことができる。
また、繊維ウェブ１０２ｂ’側から水流を噴射しているので、繊維ウェブ１０２ｂ’の親水性繊維３０を、不織布層１０２ａを貫通させて第１面２Ｓ１に達するように交絡できる。それにより、製造された体液吸収用シート２（１０２）において、体液吸収用シート２に体液が吸収されても、第１面２Ｓ１の複数の親水性繊維３０に保持された体液により第１面２Ｓ１がべたべたすることや、リウェットが生じることを、起こり難くすることができる。よって、吸収性能（吸汗性、吸収速度）が高く、液捌け性が高く、リウェットし難くすることができる体液吸収用シート２を製造することができる。 In the method for producing a main body liquid absorbing sheet, a non-woven fabric layer 102a containing a plurality of heat-sealing fibers 20 heat-sealed to each other and a fiber web 102b containing a plurality of hydrophilic fibers 30 are provided on a mesh-shaped support 50. 'And are placed in sequence, and water flow confounding is performed from the fiber web 102b'side.
At that time, since the heat-sealing fibers 20 are heat-sealed in advance in the nonwoven fabric layer 102a, the skeleton structure of the heat-sealing fibers 20 can be maintained even when confounding with water flow. As a result, in the manufactured body fluid absorbing sheet 2 (102), the voids between the heat-sealing fibers 20 can be widely maintained, and the body fluid discharged to the first surface 2S1 is collected by the plurality of hydrophilic fibers 30. It can quickly lead to the non-woven fabric layer 2a and further to the hydrophilic fiber layer 2b.
Further, since the water flow is jetted from the fiber web 102b'side, the hydrophilic fibers 30 of the fiber web 102b'can be entangled so as to penetrate the nonwoven fabric layer 102a and reach the first surface 2S1. As a result, in the manufactured body fluid absorption sheet 2 (102), even if the body fluid is absorbed by the body fluid absorption sheet 2, the body fluid held by the plurality of hydrophilic fibers 30 on the first surface 2S1 causes the first surface 2S1. It is possible to prevent stickiness and rewetting from occurring. Therefore, it is possible to manufacture the body fluid absorbing sheet 2 which has high absorption performance (sweat absorption property, absorption rate), high liquid dispersibility, and can be difficult to rewet.

本実施形態の好ましい態様では、体液吸収用シートの製造方法において、支持体５０は、不織布層１０２ａの側に突出する複数の突出部５１を有している。そのため、交絡工程では、噴射された水流が突出部５１に衝突することにより、不織布層１０２ａの熱融着性繊維２０が水流でかき分けられ易くなる。それにより、熱融着性繊維２０が水流でかき分けられたところに、繊維ウェブ１０２ｂ’の親水性繊維３０を進入し易くすることができる。それにより、より容易に、親水性繊維３０の一部を、それぞれ不織布層１０２ａを貫通して第１面２Ｓ１に露出させることができる。 In a preferred embodiment of the present embodiment, in the method for manufacturing a body fluid absorbing sheet, the support 50 has a plurality of protruding portions 51 protruding toward the non-woven fabric layer 102a. Therefore, in the entanglement step, the jetted water flow collides with the protruding portion 51, so that the heat-sealing fibers 20 of the nonwoven fabric layer 102a are easily separated by the water flow. As a result, the hydrophilic fibers 30 of the fiber web 102b'can easily enter the place where the heat-sealing fibers 20 are separated by the water flow. Thereby, a part of the hydrophilic fibers 30 can be more easily exposed to the first surface 2S1 through the nonwoven fabric layer 102a, respectively.

ただし、低坪量部及び高坪量部の測定方法は以下のとおりである。
（１）体液吸収用シートを２５０ｍｍ×２００ｍｍの大きさに切り出して試料とする。
（２）試料の下に黒画用紙を敷く。
（３）Ｃａｎｏｎ Ｉｎｃ．製のｉｍｅｇｅＲＵＮＮＥＲ ＡＤＶＡＮＣＥ Ｃ５５３Ｆ ＩＩ を用いて、試料の画像（サイズ：２５０ｍｍ×２００ｍｍ）をＪＰＥＧデータとして取り込む。
（４）Ｓｃａｌａｒ ｃｏｒｐｏｒａｔｉｏｎ製 ＵＳＢ Ｄｉｇｉｔａｌ Ｓｃａｌｅ ｖｅｒ． １．１．０ を用いて試料の画像（ＪＰＥＧデータ）の２値化を行う。
（４－１）ＵＳＢ Ｄｉｇｉｔａｌ Ｓｃａｌｅで試料の画像を開く。
（４－２）画像から測定範囲（１０００×５００ｐｉｘｅｌｓ）を切り抜く。
（４－３）切り抜いた画像を２値化する。ただし、２値化の閾値を９０に設定する。
（４－４）２値化された画像のうち、幅２～１０００ｐｉｘｅｌ×高さ２～５００ｐｉｘｅｌの範囲において、黒色部分をカウントする。黒色部分（黒色の中に、略直線状に橋架けした白部分を含む）を低坪量部とし、白色部分を高坪量部とする。 However, the measurement method for the low basis weight portion and the high basis weight portion is as follows.
(1) A body fluid absorption sheet is cut into a size of 250 mm × 200 mm and used as a sample.
(2) Place black drawing paper under the sample.
(3) Canon Inc. An image (size: 250 mm × 200 mm) of a sample is captured as JPEG data using the imageRUNNER ADVANCE C553F II manufactured by Japan.
(4) USB Digital Scale ver. Made by Scalar corporation. Binarize the sample image (JPEG data) using 1.1.0.
(4-1) Open the image of the sample with the USB Digital Scale.
(4-2) A measurement range (1000 × 500 pixels) is cut out from the image.
(4-3) The cropped image is binarized. However, the binarization threshold is set to 90.
(4-4) Of the binarized images, the black portion is counted in the range of width 2 to 1000 pixel × height 2 to 500 pixel. The black part (including the white part bridged in a substantially straight line in black) is the low basis weight part, and the white part is the high basis weight part.

不織布層や親水性繊維層（親水性繊維として保水性繊維を用いた場合）での繊維の種類及び割合は以下のようにして測定される。
すなわち、親水性繊維及び熱融着性繊維をそれぞれ別の色で着色することで、繊維の種類の割合を測定する。（１）体液吸収用シートを７０ｍｍ×７０ｍｍの大きさに切り出して試料とする。（２）試薬カヤステインＱ（ＫａｙａｓｔａｉｎＱ）（株式会社色染社）にて着色処理を行うことにより、親水性繊維のみ青色に染め、熱融着性繊維のみ黄色に着色する。（３）株式会社キーエンス製のデジタルマイクロスコープＶＨＸ－１００にて、試料の第１面２Ｓ１（不織布層２ａ）から見たときの青色と黄色の割合を５０ｍｍ×５０ｍｍの範囲で測定することで、第１面２Ｓ１における繊維の種類と割合が得られる（図３（ａ））。一方、第２面２Ｓ２（親水性繊維層２ｂ）から見たときの青色と黄色の割合を５０ｍｍ×５０ｍｍの範囲で測定することで、親水性繊維層２ｂにおける繊維の種類と割合とする。なお、着色後の試料を厚さ方向に沿って（平面方向に垂直に）切断することで、断面での繊維の種類及び割合が得られる（図３（ｂ））。 The types and proportions of fibers in the non-woven fabric layer and the hydrophilic fiber layer (when water-retaining fibers are used as the hydrophilic fibers) are measured as follows.
That is, the ratio of fiber types is measured by coloring the hydrophilic fibers and the heat-sealing fibers with different colors. (1) A body fluid absorbing sheet is cut into a size of 70 mm × 70 mm and used as a sample. (2) By performing a coloring treatment with the reagent Kayastein Q (color dyeing company Co., Ltd.), only the hydrophilic fibers are dyed blue and only the heat-sealing fibers are colored yellow. (3) By measuring the ratio of blue and yellow when viewed from the first surface 2S1 (nonwoven fabric layer 2a) of the sample with a digital microscope VHX-100 manufactured by KEYENCE CORPORATION in the range of 50 mm × 50 mm. The types and proportions of fibers on the first surface 2S1 can be obtained (FIG. 3A). On the other hand, the ratio of blue and yellow when viewed from the second surface 2S2 (hydrophilic fiber layer 2b) is measured in the range of 50 mm × 50 mm to determine the type and ratio of fibers in the hydrophilic fiber layer 2b. By cutting the colored sample along the thickness direction (perpendicular to the plane direction), the type and proportion of fibers in the cross section can be obtained (FIG. 3 (b)).

不織布層や親水性繊維層での繊維の繊維長及び平均繊維長は、ＪＩＳ Ｌ １０１５：２０１０の附属書Ａの「Ａ７．１ 繊維長の測定」の「Ａ７．１．１ Ａ法（標準法）目盛りが付いたガラス板上で個々の繊維の長さを測定する方法」に従って測定される。なお、上記方法は、１９８１年に発行されたＩＳＯ ６９８９に相当する試験方法である。 The fiber length and average fiber length of the fibers in the non-woven fabric layer and the hydrophilic fiber layer are the A7.1.A method (standard method) of "A7.1 Fiber Length Measurement" in Annex A of JIS L 1015: 2010. ) Measured according to "How to measure the length of individual fibers on a graduated glass plate". The above method is a test method equivalent to ISO 6989 published in 1981.

不織布層、親水性繊維層及び体液吸収用シートの坪量は以下の測定方法に従って測定される。一層分の各層又はシートを作製し、その各層を１０ｃｍ×１０ｃｍの大きさに切り出して試料とし、１００℃以上の雰囲気での乾燥処理後に質量を測定する。次いで、測定した質量を試料の面積で割り算して試料の坪量を算出する。１０個の試料の坪量を平均した値を各層又はシートの坪量とする。 The basis weight of the non-woven fabric layer, the hydrophilic fiber layer and the body fluid absorbing sheet is measured according to the following measuring method. Each layer or sheet for one layer is prepared, each layer is cut into a size of 10 cm × 10 cm and used as a sample, and the mass is measured after drying in an atmosphere of 100 ° C. or higher. Next, the measured mass is divided by the area of the sample to calculate the basis weight of the sample. The value obtained by averaging the basis weights of 10 samples is defined as the basis weight of each layer or sheet.

不織布層、親水性繊維層及び体液吸収用シートなどのシート部材の厚さは、（株）大栄科学精器製作所製 ＴＨＩＣＫＮＥＳＳ ＧＡＵＧＥ ＵＦ－６０を用いて測定される。ＵＦ－６０の測定面の直径は４４ｍｍであり、ＵＦ－６０はシート部材に０．３ｋＰａの圧力を加え、その厚みを測定する。別々の３か所の位置で測定したシート部材の厚さの平均値を、シート部材の厚さとする。 The thickness of the sheet member such as the non-woven fabric layer, the hydrophilic fiber layer and the body fluid absorbing sheet is measured using THICKNESS GAUGE UF-60 manufactured by Daiei Kagaku Seiki Seisakusho Co., Ltd. The diameter of the measurement surface of the UF-60 is 44 mm, and the UF-60 applies a pressure of 0.3 kPa to the seat member and measures the thickness thereof. The average value of the thicknesses of the seat members measured at three different positions is taken as the thickness of the seat members.

以下、実施例に基づき、本発明を説明するが、本発明は本実施例に限定されない。本実施例では、体液吸収用シートを作製し、その強度を測定した。 Hereinafter, the present invention will be described based on examples, but the present invention is not limited to the present examples. In this example, a body fluid absorption sheet was prepared and its strength was measured.

（ａ）試料
実施例１の試料として、図３を参照して説明された体液吸収用シートであって、不織布層は、繊維の種類：ＰＥ／ＰＥＴ、繊度・繊維長：２．２ｄｔｅｘ×４４ｍｍ、繊維の割合：１００％、坪量：２０ｇ／ｍ２であり、親水性繊維層は、繊維の種類：レーヨン、繊度・繊維長：１．４ｄｔｅｘ×３８ｍｍ、繊維の割合：１００％、坪量：３０ｇ／ｍ２であるシートを作製した。また、実施例２の試料として、図３を参照して説明された体液吸収用シートであるが、不織布層は、ＰＥ／ＰＥＴ、５．６ｄｔｅｘ×５１ｍｍ、１００％、２０ｇ／ｍ２であり、親水性繊維層は、レーヨン、１．４ｄｔｅｘ×３８ｍｍ、１００％、３０ｇ／ｍ２であるシートを作製した。なお、実施例１、２の体液吸収用シートは、図４～図６を参照して説明された製造方法で製造された。一方、比較例１の試料としては、不織布層と親水性繊維層とは積層されているが、実施例１、２と異なり、親水性繊維層の親水性繊維は、不織布層を貫通して不織布層側の表面に露出していないシートを作製した。すなわち、不織布層は、ＰＥ／ＰＥＴ、３．４ｄｔｅｘ×４０ｍｍ、１００％、２０ｇ／ｍ２であり、親水性繊維層は、レーヨン、１．４ｄｔｅｘ×３８ｍｍ、１００％、３０ｇ／ｍ２であるシートを作製した。 (A) Sample As the sample of Example 1, it is a body fluid absorbing sheet described with reference to FIG. 3, and the nonwoven fabric layer is a fiber type: PE / PET, fineness / fiber length: 2.2 dtex × 44 mm. , Fiber ratio: 100%, Basis weight: 20 g / m 2 , and the hydrophilic fiber layer is fiber type: rayon, fineness / fiber length: 1.4 dtex × 38 mm, fiber ratio: 100%, basis weight. : A sheet at 30 g / m 2 was prepared. Further, as the sample of Example 2, the body fluid absorption sheet described with reference to FIG. 3, but the non-woven fabric layer is PE / PET, 5.6 dtex × 51 mm, 100%, 20 g / m 2 . As the hydrophilic fiber layer, a sheet of rayon, 1.4 dtex × 38 mm, 100%, 30 g / m 2 was prepared. The body fluid absorbing sheets of Examples 1 and 2 were manufactured by the manufacturing method described with reference to FIGS. 4 to 6. On the other hand, as the sample of Comparative Example 1, the non-woven fabric layer and the hydrophilic fiber layer are laminated, but unlike Examples 1 and 2, the hydrophilic fibers of the hydrophilic fiber layer penetrate the non-woven fabric layer and are non-woven fabric. A sheet not exposed on the surface on the layer side was prepared. That is, the non-woven fabric layer is PE / PET, 3.4 dtex × 40 mm, 100%, 20 g / m 2 , and the hydrophilic fiber layer is rayon, 1.4 dtex × 38 mm, 100%, 30 g / m 2 . Was produced.

（ｂ）評価方法
体液吸収用シートの吸汗性、吸収速度、液捌け性及びリウェットの試験により、実施例１、２、比較例１、の試料を評価した。 (B) Evaluation Method The samples of Examples 1 and 2 and Comparative Example 1 were evaluated by testing the sweat absorption property, absorption rate, liquid release property and rewet of the body fluid absorption sheet.

ただし、体液吸収用シートの吸汗性の試験方法は以下のとおりである。
（１）ストップウォッチ、１ｍｌマイクロピペット、重り（３５×５０ｍｍ：５２５ｇ）、ろ紙（３５×５０ｍｍ：１０枚）、人工尿（イオン交換水２.０Ｌ、尿素４０.０ｇ、塩１６.０ｇ、マグネシウム１．６ｇ、カルシウム０．６ｇ、青粉０．１ｇ）、エアレイド不織布（ＯＵＫ４５（王子キノクロス社製）：３０×５０ｍｍ、５枚）、を準備する。ただし、人工尿は、汗を模擬している。
（２）体液吸収用シートを１００ｍｍ×１００ｍｍの大きさに切り出して試料とする。
（３）試料の質量を測定する。
（４）エアレイド不織布を５枚重ねたものにマイクロピペットで人工尿１ｍｌを均等にかける。
（５）試料に、人工尿を塗った側が接するようにエアレイド不織布（５枚重ね）を載せ、その上に重りを載置する。
（６）重りの載置後、２分経過したら、試料の質量を測定する（ｇ：１回目）。
（７）同じ試料に、新しく人工尿１ｍｌをかけたエアレイド不織布を、人工尿を塗った側が接するように載せ、その上に重りを載置する。
（８）重りの載置後、２分経過したら、試料の質量を測定する（ｇ：２回目）。 However, the test method for the sweat absorption of the body fluid absorbing sheet is as follows.
(1) Stopwatch, 1 ml micropipette, weight (35 x 50 mm: 525 g), filter paper (35 x 50 mm: 10 sheets), artificial urine (ion-exchanged water 2.0 L, urea 40.0 g, salt 16.0 g, magnesium Prepare 1.6 g, calcium 0.6 g, green powder 0.1 g) and air-laid non-woven fabric (OUK45 (manufactured by Oji Kinocross Co., Ltd.): 30 × 50 mm, 5 sheets). However, artificial urine imitates sweat.
(2) A body fluid absorbing sheet is cut into a size of 100 mm × 100 mm and used as a sample.
(3) Measure the mass of the sample.
(4) Sprinkle 1 ml of artificial urine evenly on a stack of 5 air-laid non-woven fabrics with a micropipette.
(5) Place an air-laid non-woven fabric (5 layers) on the sample so that the side coated with artificial urine is in contact, and place a weight on it.
(6) Two minutes after the weight is placed, the mass of the sample is measured (g: 1st time).
(7) On the same sample, place an air-laid non-woven fabric newly sprinkled with 1 ml of artificial urine so that the side coated with artificial urine is in contact with the same sample, and place a weight on it.
(8) Two minutes after the weight is placed, the mass of the sample is measured (g: second time).

体液吸収用シートの吸収速度、液捌け性及びリウェットの試験方法は以下のとおりである。
（１）マイクロピペット１０００～５０００μＬ、重り（３５×５０ｍｍ：５２５ｇ）、ろ紙（３５×５０ｍｍ：１０枚）、穴あきアクリル板（長さ２００ｍｍ×幅１００ｍｍ×厚さ８ｍｍ、長さ方向及び幅方向の中央に長さ４０ｍｍ×幅１０ｍｍの略矩形状で両短辺が半円形の穴あり）、ストップウォッチ２個、馬血、を準備する。
（２）体液吸収用シートを１００ｍｍ×１００ｍｍの大きさに切り出して試料とする。
（３）試料の中央部に穴あきアクリル板を重ねる。
（４）マイクロピペットを使って馬血２ｍｌを試料に滴下すると同時に、ストップウォッチ２個をスタートさせる。１個は浸透速度（吸収速度）用であり、もう１個は液捌け速度用である。
（５）穴の試料上とアクリル板の穴のまわりから液がなくなったときを浸透終了時と判断して、浸透速度（吸収速度）用のストップウォッチの時間を記録する（秒：１回目）。
（６）試料とアクリル板との間の液が捌けたときを液捌け終了時と判断して、液捌け速度用のストップウォッチの時間を記録する（秒：１回目）。
（７）スタートから３０秒後に、マイクロピペットを使って２回目の馬血２ｍｌを試料に滴下する。（その時点で、液捌けしていなくても２回目をスタートさせる。）
（８）穴の試料上とアクリル板の穴のまわりから液がなくなったときを浸透終了時と判断して、浸透速度（吸収速度）用のストップウォッチの時間を記録する（秒：２回目）。
（９）試料とアクリル板との間の液が捌けたときを液捌け終了時と判断して、液捌け速度用のストップウォッチの時間を記録する（秒：２回目）。
（１０）スタートから１分３０秒後に、アクリル板を取り除き、試料の馬血を滴下した箇所上に、予め質量を測定されたろ紙１０枚を載置し、ろ紙１０枚上に重りを載置する。
（１１）スタートから２分３０秒後に、試料から重り及びろ紙を取り除き、ろ紙の質量を測定する。
（１２）試料上に載置後のろ紙の質量から、載置前のろ紙の質量を減算して、リウェットを求め（ｇ）、吸収させた馬血の量（４ｍｌ≒４ｇ）に対する割合を求める（％）。 The test methods for the absorption rate, liquid dispersibility and rewet of the body fluid absorption sheet are as follows.
(1) Micropipette 1000-5000 μL, weight (35 x 50 mm: 525 g), filter paper (35 x 50 mm: 10 sheets), perforated acrylic plate (length 200 mm x width 100 mm x thickness 8 mm, length direction and width direction) Prepare a substantially rectangular hole with a length of 40 mm and a width of 10 mm and a semi-circular hole on both short sides), two stopwatches, and horse blood.
(2) A body fluid absorbing sheet is cut into a size of 100 mm × 100 mm and used as a sample.
(3) Place a perforated acrylic plate on the center of the sample.
(4) Drop 2 ml of horse blood onto the sample using a micropipette, and at the same time, start two stopwatches. One is for the permeation rate (absorption rate) and the other is for the liquid drainage rate.
(5) When the liquid runs out on the sample in the hole and around the hole in the acrylic plate, it is judged that the permeation is completed, and the time of the stopwatch for the permeation rate (absorption rate) is recorded (seconds: 1st time). ..
(6) When the liquid between the sample and the acrylic plate is separated, it is determined that the liquid is finished, and the time of the stopwatch for the liquid discharging speed is recorded (seconds: 1st time).
(7) 30 seconds after the start, 2 ml of horse blood for the second time is dropped onto the sample using a micropipette. (At that point, start the second time even if the liquid has not been drained.)
(8) When the liquid runs out on the sample of the hole and around the hole of the acrylic plate, it is judged that the permeation is completed, and the time of the stopwatch for the permeation rate (absorption rate) is recorded (second: second time). ..
(9) When the liquid between the sample and the acrylic plate is separated, it is determined that the liquid is finished, and the time of the stopwatch for the liquid discharging speed is recorded (seconds: second time).
(10) After 1 minute and 30 seconds from the start, the acrylic plate was removed, 10 sheets of filter paper whose mass was measured in advance were placed on the place where horse blood of the sample was dropped, and a weight was placed on the 10 sheets of filter paper. do.
(11) After 2 minutes and 30 seconds from the start, the weight and the filter paper are removed from the sample, and the mass of the filter paper is measured.
(12) The mass of the filter paper before placement is subtracted from the mass of the filter paper after placement on the sample to obtain the rewet (g), and the ratio to the amount of absorbed horse blood (4 ml ≈ 4 g) is obtained. (%).

（３）評価結果
評価結果は、以下の表１のとおりである。

Figure 2022046325000002
(3) Evaluation results The evaluation results are shown in Table 1 below.
Figure 2022046325000002

実施例１／実施例２の試料の吸汗性は、１回目が０．１０ｇ／０．４２ｇ、２回目が０．１３ｇ／０．３８ｇであり、共に０．０５ｇ以上であることが分かった。すなわち、汗を良く吸収する性質があることが分かった。一方、比較例１の試料の吸汗性は、１回目が０．００ｇ、２回目が０．０２ｇであり、共に０．０５ｇ未満であることが分かった。すなわち、汗を吸収する性質がほとんどないことが分かった。 It was found that the sweat absorbency of the samples of Example 1 / Example 2 was 0.10 g / 0.42 g for the first time and 0.13 g / 0.38 g for the second time, both of which were 0.05 g or more. That is, it was found that it has the property of absorbing sweat well. On the other hand, it was found that the sweat absorbency of the sample of Comparative Example 1 was 0.00 g for the first time and 0.02 g for the second time, both of which were less than 0.05 g. That is, it was found that there was almost no property of absorbing sweat.

実施例１／実施例２の試料の吸収速度は、１回目が２．５秒／２．２秒、２回目が３．６秒／２．８秒であり、共に１０秒以下であることが分かった。すなわち、体液の吸収速度が高いことが分かった。一方、比較例１の試料の吸汗性は、１回目が３０秒以上、２回目が１８．１秒であり、共に１０秒を超えることが分かった。すなわち、体液の吸収速度が非常に低いことが分かった。 The absorption rate of the sample of Example 1 / Example 2 is 2.5 seconds / 2.2 seconds for the first time and 3.6 seconds / 2.8 seconds for the second time, both of which are 10 seconds or less. Do you get it. That is, it was found that the absorption rate of body fluid was high. On the other hand, it was found that the sweat absorption property of the sample of Comparative Example 1 was 30 seconds or more for the first time and 18.1 seconds for the second time, both of which exceeded 10 seconds. That is, it was found that the absorption rate of body fluid was very low.

実施例１／実施例２の試料の液捌け性は、１回目が１７．６秒／１２．５秒、２回目が１８．６秒／１４．４秒であり、共に２５秒以下であることが分かった。すなわち、体液の液捌け性が高いことが分かった。一方、比較例１の試料の液捌け性は、１回目が３０秒以上、２回目が３０秒以上であり、共に２５秒を超えることが分かった。すなわち、体液の液捌け性が非常に低いことが分かった。 The liquid dispersibility of the sample of Example 1 / Example 2 is 17.6 seconds / 12.5 seconds for the first time and 18.6 seconds / 14.4 seconds for the second time, both of which are 25 seconds or less. I understood. That is, it was found that the body fluid has a high liquid handling property. On the other hand, it was found that the liquid resolvability of the sample of Comparative Example 1 was 30 seconds or more for the first time and 30 seconds or more for the second time, both of which exceeded 25 seconds. That is, it was found that the fluid dispersibility of the body fluid was very low.

実施例１／実施例２の試料のリウェットは、０．４４／０．３８ｇ、１１．６％／９．６％であり、０．８ｇ以下、２０％以下であることが分かった。すなわち、リウェットが生じ難い性質があることが分かった。一方、比較例１の試料のリウェットは、０．９８ｇ、２４．５％であり、０．８ｇ超、２０％超であることが分かった。すなわち、リウェットが生じ易い性質があることが分かった。 The rewet of the samples of Example 1 / Example 2 was found to be 0.44 / 0.38 g, 11.6% / 9.6%, 0.8 g or less, and 20% or less. That is, it was found that there is a property that rewetting is unlikely to occur. On the other hand, the rewet of the sample of Comparative Example 1 was found to be 0.98 g, 24.5%, and more than 0.8 g and more than 20%. That is, it was found that there is a property that rewetting is likely to occur.

本発明の吸収性物品は、上述した各実施形態に制限されることなく、本発明の目的、趣旨を逸脱しない範囲内において、適宜組合せや変更等が可能である。 The absorbent article of the present invention is not limited to each of the above-described embodiments, and can be appropriately combined or modified as long as it does not deviate from the object and purpose of the present invention.

２ 体液吸収用シート
２ａ 不織布層
２ｂ 親水性繊維層
２Ｓ１ 第１面
２Ｓ２ 第２面
２０ 熱融着性繊維
３０ 親水性繊維 2 Body fluid absorption sheet 2a Non-woven fabric layer 2b Hydrophilic fiber layer 2S1 First surface 2S2 Second surface 20 Heat-fusing fiber 30 Hydrophilic fiber

Claims (11)

第１面と第２面とを有する体液吸収用シートであって、
互いに熱融着された複数の熱融着性繊維を含み、一方の面が前記第１面を構成する不織布層と、
複数の親水性繊維を含み、一方の面が前記不織布層の他方の面に隣接し、他方の面が前記第２面を構成する親水性繊維層と、
を備え、
前記親水性繊維層の前記複数の親水性繊維の一部は、それぞれ前記不織布層を貫通して前記第１面に露出している、
体液吸収用シート。 A body fluid absorbing sheet having a first surface and a second surface.
A non-woven fabric layer containing a plurality of heat-sealing fibers heat-sealed to each other, one of which constitutes the first surface, and the like.
A hydrophilic fiber layer containing a plurality of hydrophilic fibers, one surface adjacent to the other surface of the nonwoven fabric layer, and the other surface constituting the second surface.
Equipped with
A part of the plurality of hydrophilic fibers in the hydrophilic fiber layer penetrates the non-woven fabric layer and is exposed on the first surface.
Body fluid absorption sheet. 平面視で、前記第１面に分散的に配置された複数の低坪量部と、前記複数の低坪量部の各々に隣接する少なくとも一つの高坪量部と、を有し、
前記複数の親水性繊維の一部は、前記高坪量部の前記第１面に露出している、
請求項１に記載の体液吸収用シート。 In a plan view, it has a plurality of low basis weight portions dispersedly arranged on the first surface, and at least one high basis weight portion adjacent to each of the plurality of low basis weight portions.
A part of the plurality of hydrophilic fibers is exposed on the first surface of the high basis weight portion.
The body fluid absorption sheet according to claim 1. 前記高坪量部における前記低坪量部の近傍の領域の方が、前記高坪量部における前記低坪量部から離れた離間領域よりも、前記第１面に露出している前記親水性繊維が多い、
請求項２に記載の体液吸収用シート。 The hydrophilicity of the region near the low basis weight portion in the high basis weight portion is more exposed on the first surface than the separated region away from the low basis weight portion in the high basis weight portion. Lots of fiber,
The body fluid absorption sheet according to claim 2. 前記複数の低坪量部の少なくとも一つは、前記第１面から前記第２面まで貫通する貫通孔を有する、
請求項２又は３に記載の体液吸収用シート。 At least one of the plurality of low basis weight portions has a through hole penetrating from the first surface to the second surface.
The body fluid absorption sheet according to claim 2 or 3. 前記第１面に露出している前記複数の親水性繊維の一部は、前記第１面から、厚さ方向の外側に向って突出する複数の突出親水性繊維を含む、
請求項１乃至４のいずれか一項に記載の体液吸収用シート。 A part of the plurality of hydrophilic fibers exposed on the first surface includes a plurality of protruding hydrophilic fibers protruding outward in the thickness direction from the first surface.
The body fluid absorption sheet according to any one of claims 1 to 4. 前記複数の突出親水性繊維の一部は、前記第１面から、前記厚さ方向の外側に向って凸な弧状に突出している、
請求項５に記載の体液吸収用シート。 A part of the plurality of protruding hydrophilic fibers protrudes from the first surface in a convex arc shape toward the outside in the thickness direction.
The body fluid absorption sheet according to claim 5. 前記不織布層は、熱融着しない複数の非熱融着性繊維を更に含み、
前記不織布層における前記複数の非熱融着性繊維の割合は５０質量％未満である、
請求項１乃至６のいずれか一項に記載の体液吸収用シート。 The non-woven fabric layer further contains a plurality of non-heat-fused fibers that are not heat-fused.
The proportion of the plurality of non-heat-fused fibers in the nonwoven layer is less than 50% by mass.
The body fluid absorption sheet according to any one of claims 1 to 6. 前記複数の熱融着性繊維より、前記複数の親水性繊維の方が、繊度が小さい、
請求項１乃至７のいずれか一項に記載の体液吸収用シート。 The plurality of hydrophilic fibers have a smaller fineness than the plurality of heat-fusing fibers.
The body fluid absorption sheet according to any one of claims 1 to 7. 前記複数の親水性繊維は、再生セルロース繊維を含む、
請求項１乃至８のいずれか一項に記載の体液吸収用シート。 The plurality of hydrophilic fibers include regenerated cellulose fibers.
The body fluid absorption sheet according to any one of claims 1 to 8. 第１面と第２面とを有する体液吸収用シートの製造方法であって、
互いに熱融着された複数の熱融着性繊維を含み、一方の面が前記第１面を構成する不織布層を準備する工程と、
メッシュ状の支持体の表面に前記不織布層の一方の面が接し、前記不織布層の他方の面に複数の親水性繊維を含む繊維ウェブの一方の面が接するように、前記支持体に前記不織布層及び前記繊維ウェブを載置する載置工程と、
前記不織布層上に載置された前記繊維ウェブの他方の面に向かって水流を噴射し、前記複数の親水性繊維を前記複数の熱融着性繊維に交絡させて、前記複数の親水性繊維を含み、一方の面が前記不織布層の他方の面に隣接し、他方の面が前記第２面を構成する親水性繊維層を形成する交絡工程と、
を備え、
前記交絡工程において、前記親水性繊維層の前記複数の親水性繊維の一部は、それぞれ前記不織布層を貫通して前記第１面に露出する、
体液吸収用シートの製造方法。 A method for manufacturing a body fluid absorbing sheet having a first surface and a second surface.
A step of preparing a nonwoven fabric layer containing a plurality of heat-sealing fibers heat-sealed to each other and one surface constituting the first surface.
The nonwoven fabric is in contact with the support so that one surface of the nonwoven fabric layer is in contact with the surface of the mesh-shaped support and one surface of a fiber web containing a plurality of hydrophilic fibers is in contact with the other surface of the nonwoven fabric layer. The mounting process for mounting the layer and the fiber web, and
A stream of water is jetted toward the other surface of the fiber web placed on the non-woven fabric layer, and the plurality of hydrophilic fibers are entangled with the plurality of heat-sealing fibers to cause the plurality of hydrophilic fibers. The entanglement step of forming a hydrophilic fiber layer in which one surface is adjacent to the other surface of the nonwoven fabric layer and the other surface constitutes the second surface.
Equipped with
In the entanglement step, a part of the plurality of hydrophilic fibers in the hydrophilic fiber layer penetrates the non-woven fabric layer and is exposed to the first surface.
A method for manufacturing a body fluid absorption sheet. 前記支持体は、前記不織布層の側に突出する複数の突出部を有する、
請求項１０に記載の体液吸収用シートの製造方法。 The support has a plurality of protrusions protruding toward the non-woven fabric layer.
The method for manufacturing a body fluid absorbing sheet according to claim 10.
JP2020152307A 2020-09-10 2020-09-10 Body fluid absorption sheet Pending JP2022046325A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7413595B1 (en) 2023-08-04 2024-01-15 ユニ・チャーム株式会社 absorbent articles

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61176346A (en) * 1985-01-29 1986-08-08 ユニ・チヤ−ム株式会社 Surface material of absorbable article and its production
JP2543597B2 (en) * 1989-08-31 1996-10-16 ユニ・チャーム株式会社 Method for producing composite non-woven fabric having openings
JP2843123B2 (en) * 1990-06-29 1999-01-06 ユニ・チャーム株式会社 Surface sheet for absorbent article and method for producing the same
JP4543196B2 (en) * 2000-07-06 2010-09-15 株式会社日本吸収体技術研究所 Non-woven fabric having a multiphase structure and method for producing the same
JP4911833B2 (en) * 2001-05-23 2012-04-04 株式会社リブドゥコーポレーション Continuous production method for pants-type disposable diapers
JP4127494B2 (en) * 2002-06-21 2008-07-30 ユニ・チャーム株式会社 Absorbent articles
JP4145203B2 (en) * 2003-06-17 2008-09-03 花王株式会社 Absorbent articles
JP4090412B2 (en) * 2003-09-22 2008-05-28 花王株式会社 Absorbent article surface sheet
JP5069983B2 (en) * 2007-09-07 2012-11-07 花王株式会社 Nonwoven fabric and method for producing the same
JP5087432B2 (en) * 2008-03-07 2012-12-05 花王株式会社 Nonwoven fabric and method for producing the same
JP5665610B2 (en) * 2011-03-04 2015-02-04 ユニ・チャーム株式会社 Nonwoven fabric and method for producing the nonwoven fabric
JP5433043B2 (en) * 2012-04-02 2014-03-05 花王株式会社 Nonwoven manufacturing method
EP3402665A4 (en) * 2016-01-15 2020-03-04 First Quality Nonwovens, Inc. Nonwoven composite including natural fiber web layer and method of forming the same
WO2018167882A1 (en) * 2017-03-15 2018-09-20 花王株式会社 Layered nonwoven cloth, method for manufacturing same, absorbent article, and sweat-absorbing sheet
JP6920142B2 (en) * 2017-09-06 2021-08-18 花王株式会社 Sheets for absorbent articles and absorbent articles
JP6912979B2 (en) * 2017-09-06 2021-08-04 花王株式会社 Absorbent article
JP6941512B2 (en) * 2017-09-06 2021-09-29 花王株式会社 Absorbent article

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7413595B1 (en) 2023-08-04 2024-01-15 ユニ・チャーム株式会社 absorbent articles

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