JP6605064B2 - 吸収性物品 - Google Patents
吸収性物品 Download PDFInfo
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- JP6605064B2 JP6605064B2 JP2018055517A JP2018055517A JP6605064B2 JP 6605064 B2 JP6605064 B2 JP 6605064B2 JP 2018055517 A JP2018055517 A JP 2018055517A JP 2018055517 A JP2018055517 A JP 2018055517A JP 6605064 B2 JP6605064 B2 JP 6605064B2
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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
- A61F13/53—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 absorbing medium
- A61F13/531—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 absorbing medium having a homogeneous composition through the thickness of the pad
- A61F13/532—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 absorbing medium having a homogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad
- A61F13/533—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 absorbing medium having a homogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad having discontinuous areas of compression
-
- 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
- A61F13/45—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 shape
- A61F13/47—Sanitary towels, incontinence pads or napkins
- A61F13/472—Sanitary towels, incontinence pads or napkins specially adapted for female use
-
- 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
- A61F13/45—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 shape
- A61F13/47—Sanitary towels, incontinence pads or napkins
- A61F13/475—Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means
- A61F13/4751—Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means the means preventing fluid flow in a transversal direction
- A61F13/4756—Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means the means preventing fluid flow in a transversal direction the means consisting of grooves, e.g. channels, depressions or embossments, resulting in a heterogeneous surface level
-
- 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 of the pads
- A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
- A61F13/51104—Topsheet, i.e. the permeable cover or layer facing the skin the top sheet having a three-dimensional cross-section, e.g. corrugations, embossments, recesses or projections
-
- 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
- A61F13/53—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 absorbing medium
- A61F13/534—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 absorbing medium having an inhomogeneous composition through the thickness of the pad
- A61F13/535—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 absorbing medium having an inhomogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad, e.g. core absorbent layers being of different sizes
- A61F13/536—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 absorbing medium having an inhomogeneous composition through the thickness of the pad inhomogeneous in the plane of the pad, e.g. core absorbent layers being of different sizes having discontinuous areas of compression
-
- 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
- A61F13/53—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 absorbing medium
- A61F13/534—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 absorbing medium having an inhomogeneous composition through the thickness of the pad
- A61F13/537—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 absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer
- A61F2013/53765—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 absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer characterized by its geometry
-
- 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
- A61F13/53—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 absorbing medium
- A61F13/534—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 absorbing medium having an inhomogeneous composition through the thickness of the pad
- A61F13/537—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 absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer
- A61F2013/53765—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 absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer characterized by its geometry
- A61F2013/53778—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 absorbing medium having an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer characterized by its geometry with grooves
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- Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Absorbent Articles And Supports Therefor (AREA)
Description
前記吸収体の少なくとも前記表面シート側の面に、前記表面シートとの間に空間を形成しながら前記裏面シート側に向けて窪ませた、前記吸収体の厚みを厚み方向に圧縮するコアプレスが格子状パターンで形成されるとともに、前記吸収体の幅方向中央部に、略幅方向に沿って延びる幅方向吸収体エンボスが吸収性物品の長手方向に離隔して複数形成され、
前記幅方向吸収体エンボスと重なる部分及びその近傍で前記コアプレスを間欠させた非プレス部が、前記幅方向吸収体エンボスの全周囲に沿って形成され、前記幅方向吸収体エンボスと前記コアプレスとが直接接続しないようにされ、
前記表面シートの外面に前記表面シートから吸収体までの間を一体的に前記裏面シート側に向けて窪ませた長手方向表面エンボスが、吸収性物品の幅方向中央部に長手方向に沿って延びるとともに、前記幅方向吸収体エンボスを横断するように形成され、かつ前記長手方向表面エンボスの底面は、低圧搾部と前記長手方向表面エンボスが延びる方向に沿って間隔を空けて複数配置された高圧搾部とで構成され、前記高圧搾部は前記幅方向吸収体エンボスよりも前側であって、高圧搾部の後端部が前記幅方向吸収体エンボスの前側に隣接する非プレス部と重なる位置に配置されていることを特徴とする吸収性物品が提供される。
本発明に係る生理用ナプキン1は、図1〜図3に示されるように、ポリエチレンシートなどからなる不透液性の裏面シート2と、経血やおりものなど(以下、まとめて体液ともいう。)を速やかに透過させる透液性の表面シート3と、これら両シート2,3間に介装された綿状パルプまたは合成パルプなどからなる吸収体4と、肌当接面側の両側部に長手方向のほぼ全長に亘って設けられたサイド不織布7、7とを備え、かつ前記吸収体4の周囲においては、その上下端縁部では前記裏面シート2と表面シート3との外縁部がホットメルトなどの接着剤やヒートシール、超音波シール等の接合手段によって接合され、またその両側縁部では吸収体4よりも側方に延出している前記裏面シート2と前記サイド不織布7とがホットメルトなどの接着剤やヒートシール、超音波シール等の接合手段によって接合されることにより、吸収体が介在しないフラップ部が形成されたものである。なお、図示例では、前記吸収体4の形状保持および拡散性向上のために、前記吸収体4をクレープ紙又は不織布などからなる被包シート5で囲繞しているが、この被包シート5は設けなくてもよい。また、図示しないが、前記表面シート3の非肌側に隣接して、前記表面シート3とほぼ同形状の親水性の不織布などからなるセカンドシートを配設してもよい。
前記裏面シート2は、ポリエチレン等の少なくとも遮水性を有するシート材が用いられるが、蒸れ防止の観点から透湿性を有するものを用いるのが望ましい。この遮水・透湿性シート材としては、ポリエチレンやポリプロピレン等のオレフィン系樹脂中に無機充填剤を溶融混練してシートを成形した後、一軸または二軸方向に延伸することにより得られる微多孔性シートが好適に用いられる。前記裏面シート2の非肌側面(外面)にはナプキン長手方向に沿って1または複数条の粘着剤層(図示せず)が形成され、身体への装着時に生理用ナプキン1を下着に固定するようになっている。前記裏面シート2としては、プラスチックフィルムと不織布とを積層させたポリラミ不織布を用いてもよい。
前記裏面シート2と表面シート3との間に介在される吸収体4は、たとえばパルプと高吸水性ポリマーとにより構成されている。前記高吸水性ポリマーは吸収体を構成するパルプ中に、例えば粒状粉として混入されている。前記パルプとしては、木材から得られる化学パルプ、溶解パルプ等のセルロース繊維や、レーヨン、アセテート等の人工セルロース繊維からなるものが挙げられ、広葉樹パルプよりは繊維長の長い針葉樹パルプの方が機能および価格の面で好適に使用される。
本生理用ナプキン1では、図1に示されるように、前記表面シート3の外面に表面シート3から吸収体4までの間を一体的に裏面シート2側に向けて窪ませた長手方向表面エンボス20が、生理用ナプキン1の幅方向中央部に長手方向に沿って延びるとともに、前記幅方向吸収体エンボス14を横断するように形成されている。前記長手方向表面エンボス20は、体液排出部Hに対応する領域における体液を途中で幅方向に拡散させつつ、吸収体4の後側に向けて拡散させ、吸収体4の広い範囲を有効活用するためのものである。
Claims (4)
- 透液性の表面シートと不透液性の裏面シートとの間に吸収体が介在された吸収性物品において、
前記吸収体の少なくとも前記表面シート側の面に、前記表面シートとの間に空間を形成しながら前記裏面シート側に向けて窪ませた、前記吸収体の厚みを厚み方向に圧縮するコアプレスが格子状パターンで形成されるとともに、前記吸収体の幅方向中央部に、略幅方向に沿って延びる幅方向吸収体エンボスが吸収性物品の長手方向に離隔して複数形成され、
前記幅方向吸収体エンボスと重なる部分及びその近傍で前記コアプレスを間欠させた非プレス部が、前記幅方向吸収体エンボスの全周囲に沿って形成され、前記幅方向吸収体エンボスと前記コアプレスとが直接接続しないようにされ、
前記表面シートの外面に前記表面シートから吸収体までの間を一体的に前記裏面シート側に向けて窪ませた長手方向表面エンボスが、吸収性物品の幅方向中央部に長手方向に沿って延びるとともに、前記幅方向吸収体エンボスを横断するように形成され、かつ前記長手方向表面エンボスの底面は、低圧搾部と前記長手方向表面エンボスが延びる方向に沿って間隔を空けて複数配置された高圧搾部とで構成され、前記高圧搾部は前記幅方向吸収体エンボスよりも前側であって、高圧搾部の後端部が前記幅方向吸収体エンボスの前側に隣接する非プレス部と重なる位置に配置されていることを特徴とする吸収性物品。 - 前記長手方向表面エンボスは、着用者の体液排出部に対応する領域から後側に延びるように設けられている請求項1記載の吸収性物品。
- 前記幅方向吸収体エンボスは、着用者の体液排出部に対応する領域の周囲を囲む環状に形成された圧搾溝の略幅方向に延びる部分及び吸収性物品の略幅方向に沿って延びる独立する圧搾溝のいずれか又はこれらの組み合わせからなる請求項1、2いずれかに記載の吸収性物品。
- 前記吸収体の厚みが5mm以下である請求項1〜3いずれかに記載の吸収性物品。
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018055517A JP6605064B2 (ja) | 2018-03-23 | 2018-03-23 | 吸収性物品 |
| PCT/JP2019/010996 WO2019181813A1 (ja) | 2018-03-23 | 2019-03-15 | 吸収性物品 |
| EP19770915.7A EP3769735A4 (en) | 2018-03-23 | 2019-03-15 | ABSORBENT ARTICLE |
| US16/960,194 US20210059874A1 (en) | 2018-03-23 | 2019-03-15 | Absorbent article |
| KR1020207019917A KR102642080B1 (ko) | 2018-03-23 | 2019-03-15 | 흡수성 물품 |
| CN201980007796.4A CN111587102B (zh) | 2018-03-23 | 2019-03-15 | 吸收性物品 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018055517A JP6605064B2 (ja) | 2018-03-23 | 2018-03-23 | 吸収性物品 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2019165926A JP2019165926A (ja) | 2019-10-03 |
| JP6605064B2 true JP6605064B2 (ja) | 2019-11-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2018055517A Active JP6605064B2 (ja) | 2018-03-23 | 2018-03-23 | 吸収性物品 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20210059874A1 (ja) |
| EP (1) | EP3769735A4 (ja) |
| JP (1) | JP6605064B2 (ja) |
| KR (1) | KR102642080B1 (ja) |
| CN (1) | CN111587102B (ja) |
| WO (1) | WO2019181813A1 (ja) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7263189B2 (ja) * | 2019-09-19 | 2023-04-24 | 大王製紙株式会社 | 吸収性物品 |
| US20220370267A1 (en) * | 2019-11-06 | 2022-11-24 | Kimberly-Clark Worldwide, Inc. | Absorbent article |
| JP7508214B2 (ja) * | 2019-11-06 | 2024-07-01 | 花王株式会社 | 吸収性物品 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2582180Y2 (ja) * | 1992-07-08 | 1998-09-30 | 大王製紙株式会社 | 紙おむつ |
| JP4455241B2 (ja) * | 2004-09-14 | 2010-04-21 | ユニ・チャーム株式会社 | 生理用ナプキン |
| JP4870365B2 (ja) * | 2005-02-23 | 2012-02-08 | ユニ・チャーム株式会社 | 生理用ナプキン |
| JP4653537B2 (ja) * | 2005-03-29 | 2011-03-16 | ユニ・チャーム株式会社 | 吸収性物品 |
| JP2010136899A (ja) | 2008-12-11 | 2010-06-24 | Kao Corp | 吸収性物品用の吸収体 |
| JP5294837B2 (ja) * | 2008-12-25 | 2013-09-18 | ユニ・チャーム株式会社 | 吸収性物品 |
| JP5939737B2 (ja) * | 2011-03-02 | 2016-06-22 | ユニ・チャーム株式会社 | 吸収性物品およびその製造方法 |
| JP6080263B2 (ja) * | 2013-11-20 | 2017-02-15 | 花王株式会社 | 吸収性物品 |
| JP6033765B2 (ja) * | 2013-12-26 | 2016-11-30 | 大王製紙株式会社 | 吸収性物品の製造方法 |
| WO2015190547A1 (ja) * | 2014-06-13 | 2015-12-17 | 大王製紙株式会社 | 吸収性物品 |
| JP6081422B2 (ja) * | 2014-08-29 | 2017-02-15 | 大王製紙株式会社 | 吸収性物品 |
| EP3187161B1 (en) * | 2014-08-29 | 2021-12-15 | Daio Paper Corporation | Absorbent article |
| JP2016112408A (ja) * | 2014-12-10 | 2016-06-23 | 王子ホールディングス株式会社 | 吸収性物品 |
| JP6378624B2 (ja) | 2014-12-12 | 2018-08-22 | 花王株式会社 | 吸収性物品 |
| JP6091569B1 (ja) * | 2015-09-07 | 2017-03-08 | ユニ・チャーム株式会社 | 吸収性物品 |
| JP6310438B2 (ja) * | 2015-10-30 | 2018-04-11 | 大王製紙株式会社 | 吸収性物品 |
| JP2018055517A (ja) | 2016-09-30 | 2018-04-05 | 日立オートモティブシステムズ株式会社 | 車両制御装置 |
| JP6507193B2 (ja) * | 2017-03-30 | 2019-04-24 | 大王製紙株式会社 | 吸収性物品 |
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| JP2019165926A (ja) | 2019-10-03 |
| KR20200134207A (ko) | 2020-12-01 |
| EP3769735A4 (en) | 2021-04-07 |
| CN111587102A (zh) | 2020-08-25 |
| WO2019181813A1 (ja) | 2019-09-26 |
| EP3769735A1 (en) | 2021-01-27 |
| CN111587102B (zh) | 2022-02-25 |
| US20210059874A1 (en) | 2021-03-04 |
| KR102642080B1 (ko) | 2024-02-28 |
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