TWI756493B - Absorbers and absorbent articles - Google Patents
Absorbers and absorbent articles Download PDFInfo
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- TWI756493B TWI756493B TW107141450A TW107141450A TWI756493B TW I756493 B TWI756493 B TW I756493B TW 107141450 A TW107141450 A TW 107141450A TW 107141450 A TW107141450 A TW 107141450A TW I756493 B TWI756493 B TW I756493B
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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
- A61F13/534—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
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- 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
- D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
- D04H1/43835—Mixed fibres, e.g. at least two chemically different fibres or fibre blends
-
- 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
-
- 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
- A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
- A61F5/44—Devices worn by the patient for reception of urine, faeces, catamenial or other discharge; Portable urination aids; Colostomy devices
- A61F5/4401—Devices worn by the patient for reception of urine, faeces, catamenial or other discharge; Portable urination aids; Colostomy devices with absorbent pads
-
- 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
- A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
- A61F5/48—Devices for preventing wetting or pollution of the bed
- A61F5/485—Absorbent protective pads
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/22—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing macromolecular materials
- A61L15/28—Polysaccharides or their derivatives
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- 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
- D04H1/4382—Stretched reticular film fibres; Composite fibres; Mixed fibres; Ultrafine fibres; Fibres for artificial leather
-
- 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
- D04H1/44—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling
- D04H1/46—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 the fleeces or layers being consolidated by mechanical means, e.g. by rolling by needling or like operations to cause entanglement of fibres
-
- 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
- A61F2013/530131—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 being made in fibre but being not pulp
-
- 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
- A61F2013/530481—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 superabsorbent materials, i.e. highly absorbent polymer gel materials
- A61F2013/530489—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 superabsorbent materials, i.e. highly absorbent polymer gel materials being randomly mixed in with other material
-
- 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
- A61F2013/530481—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 superabsorbent materials, i.e. highly absorbent polymer gel materials
- A61F2013/530489—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 superabsorbent materials, i.e. highly absorbent polymer gel materials being randomly mixed in with other material
- A61F2013/530496—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 superabsorbent materials, i.e. highly absorbent polymer gel materials being randomly mixed in with other material being fixed to fibres
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Animal Behavior & Ethology (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- General Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Epidemiology (AREA)
- Textile Engineering (AREA)
- Vascular Medicine (AREA)
- Heart & Thoracic Surgery (AREA)
- Biomedical Technology (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Hematology (AREA)
- Chemical & Material Sciences (AREA)
- Nursing (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Environmental & Geological Engineering (AREA)
- Absorbent Articles And Supports Therefor (AREA)
- Nonwoven Fabrics (AREA)
Abstract
本發明之吸收體(4)含有包含合成纖維(纖維11F)之纖維塊(11)與吸水性纖維(纖維12F),且複數個纖維塊(11)彼此或纖維塊(11)與吸水性纖維(纖維12F)相互交絡。纖維塊(11)相對於吸水性纖維(纖維12F)之含有質量比(纖維塊比率)係吸收體(4)之肌膚對向面側(正面片材(2)側)小於非肌膚對向面側(背面片材(3)側)。纖維塊(11)具有由相對向之2個基本面(111)及與兩基本面(111)交叉之骨架面(112)劃分形成之本體部(110)。 The absorber (4) of the present invention includes a fiber block (11) containing synthetic fibers (fibers 11F) and water-absorbent fibers (fibers 12F), and a plurality of fiber blocks (11) or each other or fiber blocks (11) and water-absorbent fibers (fibers 12F) are intertwined. The content mass ratio (fiber mass ratio) of the fiber lumps (11) to the water-absorbing fibers (fibers 12F) is smaller than the non-skin-opposing surface side (the surface sheet (2) side) of the absorber (4) side (back sheet (3) side). The fiber block (11) has a main body (110) divided by two opposing basic planes (111) and a skeleton plane (112) intersecting with the two basic planes (111).
Description
本發明係關於一種直接或間接接觸肌膚而使用且作為吸收性物品用吸收體較佳之吸收體。 The present invention relates to an absorbent which is used in direct or indirect contact with the skin and is preferably used as an absorbent for absorbent articles.
一般而言,拋棄式尿布、經期衛生棉等吸收性物品包含配置於相對接近穿著者之肌膚之位置之正面片材、配置於相對遠離穿著者之肌膚之位置之背面片材、及介置於兩片材間之吸收體。典型而言,該吸收體多數情況下以木漿等吸水性纖維作為主體,且進而包含吸水性聚合物粒子。關於用於吸收性物品之吸收體,柔軟性(緩衝性)、壓縮回覆性、保形性等各特性之提高為較大之課題。 Generally speaking, absorbent articles such as disposable diapers and menstrual sanitary napkins include a front sheet disposed at a position relatively close to the wearer's skin, a back sheet disposed at a position relatively far from the wearer's skin, and Absorber between two sheets. Typically, the absorber is mainly composed of water-absorbent fibers such as wood pulp in many cases, and further contains water-absorbent polymer particles. Regarding the absorber used for an absorbent article, improvement of each characteristic, such as a softness|flexibility (cushioning property), a compression recovery property, and a shape retention property, is a big subject.
作為吸收體之改良技術,例如於專利文獻1中記載有一種吸收體,其含有包含熱熔合纖維且預先使纖維間結合而賦予三維結構之不織布片、及吸水性纖維。該三維結構之不織布片係使用切碎機方式等粉碎方法將不織布粉碎成細片狀而製造者,因該製造方法而如該文獻之圖1及圖3所記載般呈不定形狀,實質上不具有如視作平面之部分。於專利文獻1中,作為該文獻所記載之吸收體之較佳形態,記載有使不織布片彼此熱熔合而成者。根據專利文獻1所記載之吸收體,由於不織布片具有三維結構,故而於該吸收體內部形成空隙,吸收水分時之復原性提高,其結果為,吸水性能提高。
As an improvement technique of an absorber, for example,
又,於專利文獻2中記載有具有相對較稠密之微細纖維核
及自該核向外側延出之纖維或纖維束的微細纖維網,又,記載有將該微細纖維網與木漿或吸水性聚合物粒子混合而成之不織纖維網可用作吸收性物品用吸收體。該微細纖維網係對不織布等原料片材進行撕取、或剝取而製造者,與專利文獻1所記載之不織布片同樣地,呈不定形狀,實質上不具有如視作平面之部分。
In addition,
又,於專利文獻3中,記載有在吸收體中含有吸水性聚合物之情形時,若該吸收體吸收液體而膨脹,則為了解決因配置於該吸收體之上下之正面片材及背面片材之密封而阻礙該吸水性聚合物之膨潤之問題,於正面片材與吸收體之間介置有具有高壓縮/壓縮回覆性及液體透過性之緩衝層,又,亦記載有將該緩衝層作為不織布之細片之集合體而構成。而且,記載有作為緩衝層之厚度,設為10mm~40mm。於專利文獻3中,關於用於緩衝層之不織布之細片之形狀等並未作具體記載。
Moreover, in
專利文獻1:美國專利申請案公開第2010/0174259號說明書 Patent Document 1: US Patent Application Publication No. 2010/0174259 Specification
專利文獻2:美國專利第4813948號說明書 Patent Document 2: Specification of US Patent No. 4813948
專利文獻3:日本專利特開2003-52750號公報 Patent Document 3: Japanese Patent Laid-Open No. 2003-52750
本發明之吸收體係直接或間接接觸肌膚而使用,具有於使用時配置於相對接近使用者之肌膚之位置之肌膚對向面、及配置於相對遠離使用者之肌膚之位置之非肌膚對向面。本發明含有包含合成纖維之纖維塊與吸水性纖維,且複數個該纖維塊彼此或該纖維塊與該吸水性纖維相互交絡。上 述纖維塊相對於上述吸水性纖維之含有質量比係上述肌膚對向面側小於上述非肌膚對向面側。 The absorption system of the present invention is used in direct or indirect contact with the skin, and has a skin-facing surface disposed relatively close to the user's skin during use, and a non-skin-facing surface disposed relatively far away from the user's skin . The present invention includes fiber blocks comprising synthetic fibers and water-absorbing fibers, and a plurality of the fiber blocks or the fiber blocks and the water-absorbing fibers are intertwined with each other. superior The mass ratio of the fiber mass relative to the water-absorbent fiber is smaller on the skin-facing surface side than on the non-skin-facing surface side.
又,本發明係一種吸收性物品,其具備上述本發明之吸收體。 Moreover, this invention is an absorbent article provided with the absorber of the said invention.
1:經期衛生棉 1: Menstrual pads
2:正面片材 2: front sheet
3:背面片材 3: back sheet
4:吸收體 4: Absorber
4A:吸收體 4A: Absorber
5:吸收性本體 5: Absorbent body
5W:護翼部 5W: Wings
6:側部片材 6: Side Sheets
10bs:片材 10bs: Sheet
11:纖維塊 11: Fiber Blocks
11A:纖維塊 11A: Fiber Blocks
11B:纖維塊 11B: Fiber Blocks
11F:纖維 11F: Fiber
11P:富含纖維塊之部位 11P: Parts rich in fiber blocks
12F:纖維 12F: Fiber
12P:富含吸水性纖維之部位 12P: The part rich in absorbent fibers
13:吸水性聚合物 13: Water Absorbent Polymer
40:吸收性芯體 40: Absorbent core
41:包芯片材 41: Chip material
100:測定台 100: Assay table
100a:斜面 100a: Bevel
101:壓克力板 101: Acrylic Sheet
110:本體部 110: body part
111:基本面 111: Fundamentals
111a:短邊 111a: Short side
111b:長邊 111b: Long side
112:骨架面 112: Skeleton Surface
113:延出纖維部 113: Extend the fiber part
113S:延出纖維束部 113S: Extend the fiber bundle
A:前方區域 A: Front area
B:縱向中央區域 B: Vertical central area
C:後方區域 C: rear area
D1:第1方向 D1: 1st direction
D2:第2方向 D2: 2nd direction
L1:長度 L1: length
L1a:間隔 L1a: Interval
L2:長度 L2: length
L2a:間隔 L2a: Interval
S:測定對象 S: Measurement object
T:厚度 T: Thickness
X:縱向 X: Portrait
Y:橫向 Y: horizontal
Z:厚度方向 Z: thickness direction
θ:角度 θ: angle
圖1係將作為本發明之吸收性物品之一實施形態的經期衛生棉之一例之肌膚對向面側(正面片材側)局部截斷而模式性地表示之俯視圖。 Fig. 1 is a plan view schematically showing a part of the skin-opposing surface side (surface sheet side) of an example of a menstrual sanitary napkin which is an embodiment of the absorbent article of the present invention.
圖2係模式性地表示圖1之I-I線截面之橫截面圖。 Fig. 2 is a cross-sectional view schematically showing a section taken along the line I-I of Fig. 1 .
圖3係僅將圖2所示之吸收體放大而表示之橫截面圖。 Fig. 3 is a cross-sectional view showing only the absorber shown in Fig. 2 in an enlarged manner.
圖4係本發明之吸收體之另一實施形態之與圖3相當之圖(橫截面圖)。 Fig. 4 is a view (cross-sectional view) corresponding to Fig. 3 of another embodiment of the absorber of the present invention.
圖5(a)及圖5(b)分別係本發明之纖維塊中之本體部之模式性立體圖。 Fig. 5(a) and Fig. 5(b) are schematic perspective views of the main body in the fiber block of the present invention, respectively.
圖6係本發明之纖維塊之製造方法之說明圖。 Fig. 6 is an explanatory diagram of a method for producing the fiber mass of the present invention.
圖7(a)係本發明之纖維塊之實例之電子顯微鏡照片(觀察倍率25倍),圖7(b)係模式性地表示該電子顯微鏡照片之纖維塊作為圖2所示之吸收體中所含之纖維塊之圖。 Fig. 7(a) is an electron microscope photograph of an example of the fiber mass of the present invention (observation magnification: 25 times), and Fig. 7(b) is a schematic diagram showing the fiber mass of the electron micrograph as the absorber shown in Fig. 2. Diagram of the fibrous mass contained.
圖8係表面擴散面積之測定方法之說明圖。 Fig. 8 is an explanatory diagram of a method for measuring the surface diffusion area.
專利文獻1及2所記載之吸收體所含有之合成纖維集合體如上所述為不定形狀,且形狀及大小完全不一致,因此於與木漿等混合之情形時有難以獲得兩者均勻之混合而無法獲得所期望之效果之虞。又,推斷:由於該等文獻揭示之合成纖維集合體係將以合成纖維作為主體之不織布粉碎成細片狀,或者進行撕取或剝取而製造者,故而表面無規地變得粗糙。於含有多個此種整個表面粗糙之合成纖維集合體的吸收體中,複數個
合成纖維集合體彼此遍及其等整面地以相對較強之結合力相互纏繞,結果明顯限制各合成纖維集合體之動作之自由度。因此,難以形成使體液通過之間隙,吸液性欠佳。又,如專利文獻1所記載之吸收體之較佳形態所示,若使吸收體中含有之所有合成纖維集合體彼此熱熔合,則其等本身之動作受到約束,結果,有吸收體整體上硬度增加、吸液性進一步降低之虞。
The synthetic fiber aggregates contained in the absorbers described in
又,若將如專利文獻1及2所記載之合成纖維集合體配合於吸收體中,則與未配合此種纖維集合體之通常之吸收體相比,構成纖維間之纖維間距離變長,因此有存在於吸收體表面之液體向吸收體內部之引入容易性(液體引入性)降低之虞。進而,若將如專利文獻3所記載之具有相當厚度之包含合成纖維集合體之緩衝層配置於吸收體上,則上述吸液性之問題變得更嚴重。
In addition, when the synthetic fiber aggregates described in
因此,本發明係關於提供一種緩衝性較高而不易扭曲、液體引入性優異、於應用於吸收性物品之情形時可提昇穿著感之吸收體、及使用該吸收體之吸收性物品。 Therefore, the present invention is directed to providing an absorbent body with high cushioning properties, not easily twisted, excellent in liquid introduction properties, and improved wearing feeling when applied to an absorbent article, and an absorbent article using the absorbent body.
以下,對本發明之吸收體及具備其之本發明之吸收性物品一起基於其等之較佳之實施形態,參照圖式進行說明。圖1及圖2中示出作為本發明之吸收性物品之一實施形態的經期衛生棉1(下亦稱「衛生棉1」)。衛生棉1具備:吸收體4,其吸收保持體液;液體透過性之正面片材2,其配置於該吸收體4之肌膚對向面側,可與穿著者之肌膚接觸;及液體難透過性之背面片材3,其配置於該吸收體4之非肌膚對向面側。如圖1所示,衛生棉1具有與穿著者之前後方向對應且自穿著者之腹側經由褲襠部向背側延伸之縱向X、及與其正交之橫向Y,又,於縱向X上被劃分為3個
區域,即:包含與穿著者之外陰部等排泄部對向之排泄部對向部(排泄點)之縱向中央區域B、配置於較該排泄部對向部更靠穿著者之腹側(前側)之前方區域A、及配置於較該排泄部對向部更靠穿著者之背側(後側)之後方區域C。
Hereinafter, the absorber of the present invention and the absorbent article of the present invention provided with the same will be described with reference to the drawings based on preferred embodiments thereof. 1 and 2 show a menstrual sanitary napkin 1 (hereinafter also referred to as "
本說明書中,「肌膚對向面」係吸收性物品或其構成構件(例如吸收體4)之於穿著吸收性物品時朝向穿著者之肌膚側之面、即相對接近穿著者之肌膚之側,「非肌膚對向面」係吸收性物品或其構成構件之於穿著吸收性物品時朝向與肌膚側相反之側、即相對遠離穿著者之肌膚之側之面。再者,此處所謂「穿著時」係指維持通常適當之穿著位置、即該吸收性物品之準確之穿著位置之狀態。 In this specification, the "skin-facing side" refers to the side of the absorbent article or its constituent members (such as the absorber 4) that faces the wearer's skin when the absorbent article is worn, that is, the side that is relatively close to the wearer's skin, The "non-skin-facing surface" refers to the surface of the absorbent article or its constituent members that faces the side opposite to the skin side when the absorbent article is worn, that is, the side relatively far from the wearer's skin. In addition, the term "wearing" here refers to a state in which a normally appropriate wearing position, that is, an accurate wearing position of the absorbent article is maintained.
如圖1所示,衛生棉1具有於縱向X上較長之形狀之吸收性本體5、及自吸收性本體5中之縱向中央區域B之沿縱向X之兩側部各者向橫向Y之外側延出之一對護翼部5W、5W。吸收性本體5係構成衛生棉1之主體之部分,具備上述正面片材2、背面片材3及吸收體4,於縱向X上被劃分為前方區域A、縱向中央區域B及後方區域C之3個區域。
As shown in FIG. 1 , the
再者,本發明之吸收性物品中之縱向中央區域於如衛生棉1般吸收性物品具有護翼部之情形時,係指於該吸收性物品之縱向(長度方向、圖中之X方向)上具有護翼部之區域,以衛生棉1為例,為一護翼部5W之沿縱向X之根部與另一護翼部5W之沿縱向X之根部所夾之區域。又,不具有護翼部之吸收性物品中之縱向中央區域係將吸收性物品在縱向上分成三等份時之中間區域。
Furthermore, the longitudinal center region in the absorbent article of the present invention refers to the longitudinal direction (the longitudinal direction, the X direction in the figure) of the absorbent article when the absorbent article has wing portions such as sanitary napkins. The area with the wings on the top, taking the
於衛生棉1中,吸收體4包含液體吸收性之吸收性芯體40及被覆該吸收性芯體40之外表面之液體透過性之包芯片材41。吸收性芯體
40與吸收性本體5同樣地,於如圖1所示之俯視下呈於縱向X上較長之形狀,吸收性芯體40之長度方向與衛生棉1之縱向X一致,吸收性芯體40之寬度方向與衛生棉1之橫向Y一致。吸收性芯體40與包芯片材41之間亦可藉由熱熔型接著劑等接著劑進行接合。
In the
如此,作為本發明之吸收體之一實施形態的吸收體4係藉由組入至如衛生棉1之吸收性物品中而間接地抵接於人之肌膚、即隔著正面片材2等構件間接地抵接於肌膚而使用者,具有於使用時配置於相對接近使用者(衛生棉1之穿著者)之肌膚之位置之肌膚對向面(與正面片材2之對向面)、及配置於相對遠離使用者之肌膚之位置之非肌膚對向面(與背面片材3之對向面),進而具有與衛生棉1之穿著者之前後方向對應之縱向X及與其正交之橫向Y,於縱向X上被劃分為前方區域A、縱向中央區域B、後方區域C之3個區域。再者,吸收體4除採用此種間接接觸肌膚而使用之形態以外,亦可採用不介隔片材等構件而直接接觸肌膚地使用之形態。
In this way, the
於衛生棉1中,包芯片材41係具有吸收性芯體40之橫向Y之長度之2倍以上且3倍以下之寬度的1片連續之片材,如圖2所示,被覆吸收性芯體40之肌膚對向面之全域,且自吸收性芯體40之沿縱向X之兩側緣向橫向Y之外側延出,該延出部捲至吸收性芯體40之下方而被覆吸收性芯體40之非肌膚對向面之全域。再者,於本發明中,包芯片材亦可並非此種1片片材,例如亦可包含被覆吸收性芯體40之肌膚對向面之1片肌膚側包芯片材、及與該肌膚側包芯片材分開地被覆吸收性芯體40之非肌膚對向面之1片非肌膚側包芯片材之2片片材。
In the
如圖2所示,正面片材2被覆吸收體4之肌膚對向面之全域。另一方面,背面片材3被覆吸收體4之非肌膚對向面之全域,進而自吸
收體4之沿縱向X之兩側緣向橫向Y之外側延出,與下述側部片材6一起形成側翼部。上述側翼部係衛生棉1中之包含自吸收體4向橫向Y之外側延出之構件之部分。背面片材3與側部片材6於自吸收體4之沿縱向X之兩側緣之延出部中藉由接著劑、熱密封、超音波密封等公知接合手段而相互接合。正面片材2及背面片材3各者與吸收體4之間亦可藉由接著劑進行接合。作為正面片材2、背面片材3,可無特別限制地使用先前用於經期衛生棉等吸收性物品之各種片材。例如作為正面片材2,可使用單層或多層構造之不織布、或開孔膜等。作為背面片材3,可使用透濕性之樹脂膜等。
As shown in FIG. 2 , the
如圖1所示,上述側翼部於縱向中央區域B朝向橫向Y之外側大幅地伸出,藉此於吸收性本體5之沿縱向X之左右兩側延伸設置有一對護翼部5W、5W。護翼部5W於如圖1所示之俯視下,具有下底(長於上底之邊)位於吸收性本體5之側部側之大致梯形形狀,於其非肌膚對向面形成有將該護翼部5W固定於短褲等所穿衣物之護翼部黏著部(未圖示)。護翼部5W係回折至短褲等所穿衣物之胯部之非肌膚對向面(外表面)側而使用。上述護翼部黏著部於其使用前由包含膜、不織布、紙等之剝離片材(未圖示)被覆。又,於吸收性本體5之肌膚對向面即正面片材2之肌膚對向面之沿縱向X之兩側部,以於俯視下與吸收體4之沿縱向X之左右兩側部重疊之方式,跨及吸收性本體5之縱向X之大致全長地配置有一對側部片材6、6。一對側部片材6、6分別於沿縱向X延伸之未圖示之接合線,藉由接著劑等公知之接合手段接合於正面片材2等其他構件。
As shown in FIG. 1 , the side flaps extend substantially outward in the longitudinal direction Y in the longitudinal central region B, whereby a pair of wing flaps 5W and 5W are extended on the left and right sides along the longitudinal direction X of the
作為衛生棉1之主要特徵部分之一,可列舉吸收體4、尤其是構成吸收體4之主體之吸收性芯體40。如圖2所示,吸收性芯體40於除含有吸水性纖維(纖維12F)以外,進而含有包含纖維(合成纖維)11F之纖維
塊11之方面具有特徵。於吸收性芯體40中,複數個吸水性纖維(纖維12F)並未集聚而各自獨立地存在,能夠自吸收性芯體40逐一單獨地取出,相對於該狀態,纖維塊11係複數個纖維11F意圖性地集聚成塊狀而經一體化之纖維集合體,可於始終保持作為該纖維集合體之形態之狀態下存在於吸收性芯體40中。纖維塊11主要有助於提高吸收性芯體40之柔軟性、緩衝性、壓縮回覆性、保形性等。另一方面,吸水性纖維(纖維12F)主要有助於提高吸收性芯體40之液體吸收性及保形性等。再者,吸收性芯體40實質上亦可謂吸收體4本身,以下關於吸收性芯體40之說明若無特別說明,則可適當用作吸收體4之說明。即,本發明包括吸收體不含包芯片材而僅由吸收性芯體形成之情形,而於該情形時,吸收體與吸收性芯體之含義相同。
As one of the main characteristic parts of the
本說明書中所謂「纖維塊」係指複數個纖維匯合成為一體之纖維集合體。作為纖維塊之形態,例如可列舉自具有一定大小之合成纖維片材分割之片。尤佳為選擇不織布作為合成纖維片材,選擇自該不織布以特定之大小及形狀切出之不織布片作為纖維塊。 In this specification, the term "fiber mass" refers to a fiber aggregate in which a plurality of fibers are integrated into one. As a form of a fiber block, the sheet divided|segmented from the synthetic fiber sheet which has a certain size is mentioned, for example. It is particularly preferable to select a non-woven fabric as the synthetic fiber sheet, and select a non-woven fabric sheet cut out from the non-woven fabric in a specific size and shape as the fiber mass.
如此,作為本發明之纖維塊之較佳之一實施形態的片狀之纖維塊並非以使複數個纖維集聚而形成該片之方式構成者,而是藉由尺寸大於該片之纖維片材(較佳為不織布)之切斷而製造者(參照圖6)。本發明之吸收體所含有之複數個纖維塊係與藉由如專利文獻1及2之先前技術所製造者相比,定形性較高之複數個片狀之纖維塊。
Thus, the sheet-like fiber block, which is a preferred embodiment of the fiber block of the present invention, is not constituted by agglomerating a plurality of fibers to form the sheet, but is formed by a fiber sheet having a size larger than that of the sheet (more It is preferably manufactured by cutting non-woven fabrics (refer to FIG. 6 ). The plurality of fiber blocks contained in the absorber of the present invention is a plurality of sheet-like fiber blocks having higher formability than those produced by the prior art such as
又,於吸收性芯體40中,複數個纖維塊11彼此或纖維塊11與吸水性纖維(纖維12F)相互交絡。於本實施形態之吸收性芯體40中,複數個纖維塊11藉由與吸收性芯體40中之構成纖維(纖維11F、吸水性纖維
(纖維12F))之相互纏繞而結合,從而形成1個纖維塊連續體。又,亦可複數個纖維塊11彼此交絡,並且纖維塊11與吸水性纖維(纖維12F)交絡而結合。進而,通常複數個吸水性纖維(纖維12F)彼此亦相互交絡。吸收性芯體40中所含有之複數個纖維塊11之至少一部分與其他纖維塊11或吸水性纖維(纖維12F)交絡。於吸收性芯體40中,可存在其中所含有之複數個纖維塊11之全部相互交絡而形成1個纖維塊連續體之情形,可存在複數個纖維塊連續體於相互未結合之狀態下混合存在之情形。
Moreover, in the
纖維塊11係柔軟性等優異者。於本發明之吸收性芯體40中,除含有此種纖維塊11以外,纖維塊11彼此或纖維塊11與吸水性纖維(纖維12F)之間亦藉由相互交絡而結合,因此吸收性芯體40對外力之響應性更優異,柔軟性、緩衝性、壓縮回覆性優異。例如於將本發明之吸收性芯體40組入至吸收性物品中之情形時,可對於自各種方向所受到之外力(例如吸收性物品穿著者之體壓)柔軟地變形,而使該吸收性物品服貼性良好地密接於穿著者之身體。此種吸收性芯體40優異之變形-回覆特性不僅可於將吸收性芯體40壓縮之情形時表現,且可於扭轉之情形時亦同樣地表現。即,組入至衛生棉1之吸收性芯體40係於衛生棉1之穿著時夾於穿著者之兩大腿部間之狀態下配置,因此該吸收體4有因穿著者之步行動作時之兩大腿部之動作而繞沿縱向X延伸之假想旋轉軸扭轉之情形,即便於此種情形時,由於吸收性芯體40具備較高之變形-回覆特性,故而對於如促進自兩大腿部之扭轉之外力容易地變形、回覆,因此不易扭曲,可對衛生棉1賦予對於穿著者之身體之較高之服貼性。
The
於吸收性芯體40中,纖維塊11彼此或纖維塊11與吸水性纖維(纖維12F)交絡,此時,此處所謂纖維塊11彼此等之「交絡」包括下述形態
A。
In the
形態A:纖維塊11彼此等並非熔合,而是藉由纖維塊11之構成纖維(纖維11F)彼此之相互纏繞而結合之形態。
Form A: The form in which the fiber blocks 11 and the like are not fused, but combined by the entanglement of the constituent fibers (
形態B:於吸收性芯體40之自然狀態(未施加外力之狀態)下,纖維塊11彼此等未結合,但於對吸收性芯體40施加有外力之狀態下,纖維塊11彼此等可藉由構成纖維(纖維11F)彼此之相互纏繞而結合之形態。此處所謂「對吸收性芯體40施加有外力之狀態」,例如係指於應用吸收性芯體40之吸收性物品之穿著中,對吸收性芯體40施加有變形力之狀態。
Form B: In the natural state of the absorptive core 40 (the state in which no external force is applied), the fiber blocks 11 and the like are not bonded to each other, but in the state where an external force is applied to the
如此,於吸收性芯體40中,如形態A般纖維塊11藉由其他纖維塊11或吸水性纖維(纖維12F)與纖維彼此之相互纏繞即「交絡」而結合,此外,亦如形態B般以可藉由交絡而與其他纖維塊11或吸水性纖維(纖維12F)結合之狀態存在,該利用纖維之交絡之結合對於更有效地表現出上述吸收性芯體40之作用效果而言成為重要的一點。然而,就保形性之方面而言,較佳為吸收性芯體具有形態A之「交絡」。
In this way, in the
無需吸收性芯體40中之經由纖維塊11之結合態樣均為「交絡」,亦可吸收性芯體40之一部分包含交絡以外之其他結合態樣、例如利用接著劑之接合等。
It is not necessary that all the bonding modes through the fiber blocks 11 in the
但是,例如於將作為與公知之防漏槽等吸收性物品之其他構件成為一體之結果而形成於吸收性芯體40之「經由纖維塊11之熔合」自吸收性芯體40排除後之剩餘部分、即吸收性芯體40本身中,較理想為纖維塊11彼此之結合、或纖維塊11與吸水性纖維(纖維12F)之結合僅藉由「纖維之交絡」進行。
However, for example, the remainder after the "fusion through the
就更確實地表現上述吸收性芯體40之作用效果之觀點而
言,形態A即「藉由交絡而結合之纖維塊11」與形態B即「可進行交絡之狀態之纖維塊11」之合計數相對於吸收性芯體40中之纖維塊11之總數,較佳為半數以上,更佳為70%以上,進而較佳為80%以上。
From the viewpoint of more surely expressing the effect of the above-mentioned
就相同之觀點而言,具有形態A之「交絡」之纖維塊11之數量較佳為具有與其他纖維塊11或吸水性纖維(纖維12F)之結合部之纖維塊11之總數之70%以上、尤佳為80%以上。
From the same viewpoint, it is preferable that the number of the fiber lumps 11 having the "interlacing" of the form A is 70% or more of the total number of the fiber lumps 11 having a joint with other fiber lumps 11 or water-absorbing fibers (
衛生棉1除於含有纖維塊11之方面具有特徵以外,亦於吸收性芯體40中之纖維材料(纖維塊11、吸水性纖維(纖維12F))之配置方面具有特徵。即,於吸收性芯體40中,如圖2及圖3所示,纖維塊11相對於吸水性纖維(纖維12F)之含有質量比(以下亦稱為「纖維塊比率」)係肌膚對向面側(正面片材2側)小於非肌膚對向面側(背面片材3側)。即,於吸收性芯體40中,吸水性纖維(纖維12F)偏集存在於肌膚對向面側,纖維塊11(合成纖維(纖維11F))偏集存在於非肌膚對向面側。
The
如此,藉由將吸收性芯體40中最初接收衛生棉1之穿著者排泄之體液之側、即吸收性芯體40之肌膚對向面側設為纖維塊比率相對較低之(包含纖維塊比率0質量%)部位、換言之較吸收性芯體40之其他部位含有更多量之吸水性纖維(纖維12F)之「富含吸水性纖維之部位12P」(參照圖3),吸收性芯體40之肌膚對向面之液體引入力(毛細管力)提高,吸收性芯體40之吸液性變得良好。另一方面,吸收性芯體40之非肌膚對向面側成為纖維塊比率相對較高之(包括不含吸水性纖維而僅存在纖維塊之情形)部位、換言之較吸收性芯體40之其他部位含有更多量之纖維塊11之「富含纖維塊之部位11P」(參照圖3),因此吸收性芯體40可充分地發揮緩衝性或不易扭曲性之提高效果等主要由纖維塊11所產生之作用效果。於富
含纖維塊之部位11P中,就使該部位11P更確實地發揮所期待之作用效果之觀點而言,較佳為纖維塊11高密度且均勻地分佈於該部位11P整體。
In this way, the side of the
上述纖維塊比率、即纖維塊11相對於吸水性纖維(纖維12F)之含有質量比係以如下方式算出。針對吸收體4(吸收性芯體40)之厚度方向、即與吸收體4(吸收性芯體40)之肌膚對向面或非肌膚對向面正交之方向上之測定對象部位(例如吸收體4之肌膚對向面側),測定存在於該測定對象部位之纖維塊11及吸水性纖維(纖維12F)各者之含量(質量),將如此測得之纖維塊11之含量除以吸水性纖維(纖維12F)之含量並以100分率表示,所獲得者為該測定對象部位之纖維塊比率。
The aforementioned fiber mass ratio, that is, the content mass ratio of the
關於吸收性芯體40之肌膚對向面側、即富含吸水性纖維之部位12P中之纖維塊比率,就將體液迅速地引入至吸收性芯體40之內部之觀點而言,較佳為140質量%以下,更佳為70質量%以下,進而較佳為30質量%以下。富含吸水性纖維之部位12P中之纖維塊比率之下限值較佳為10質量%,更佳為5質量%,進而較佳為0質量%。
From the viewpoint of rapidly introducing bodily fluids into the inside of the
吸收性芯體40之非肌膚對向面側、即富含纖維塊之部位11P中之纖維塊比率係以大於肌膚對向面側之纖維塊比率作為前提,較佳為70質量%以上,更佳為140質量%以上,進而較佳為170質量%以上。再者,關於吸收性芯體40之非肌膚對向面側之纖維塊比率之上限值,並無特別限制,該非肌膚對向面側之吸水性纖維(纖維12F)之含量亦可為0質量%。於該情形時,纖維塊比率由於該算出式中之分母成為零,故而數值上變得無限大,於該情形時,本說明書中,有時代替以纖維塊比率表示,而表達為「僅存在纖維塊」、或下述纖維塊佔有率為100質量%。
The non-skin-opposing surface side of the
如上所述,衛生棉1於在吸收性芯體40中吸水性纖維(纖維
12F)偏集存在於肌膚對向面側,纖維塊11(合成纖維(纖維11F))偏集存在於非肌膚對向面側之方面具有特徵。作為表示與該纖維塊11之分佈相關之特徵之指標,亦可使用纖維塊11之含有質量相對於纖維塊11及吸水性纖維(纖維12F)之合計含有質量之比率(以下亦稱為「纖維塊佔有率」)代替上述纖維塊比率。
As described above, the
纖維塊佔有率係以如下方式算出。針對吸收體4(吸收性芯體40)之厚度方向、即與吸收體4(吸收性芯體40)之肌膚對向面或非肌膚對向面正交之方向上之測定對象部位(例如吸收體4之肌膚對向面側),測定存在於該測定對象部位之纖維塊11及吸水性纖維(纖維12F)各者之含量(質量),將如此測得之纖維塊11之含有質量除以吸水性纖維(纖維12F)及纖維塊11各者之含有質量之合計值並以100分率表示,所獲得者為該測定對象部位之纖維塊佔有率。
The fiber mass occupancy rate was calculated as follows. For the measurement target site (eg, absorption) in the thickness direction of the absorber 4 (absorptive core 40 ), that is, in the direction perpendicular to the skin-facing surface or the non-skin-facing surface of the absorber 4 (absorptive core 40 ) body 4), the content (mass) of each of the fiber lumps 11 and the water-absorbent fibers (
就更確實地發揮上述作用效果之觀點而言,吸收性芯體40之各部中之纖維塊佔有率較佳為以於非肌膚對向面側大於肌膚對向面側作為前提,以下述方式設定。
From the viewpoint of exhibiting the above-mentioned effects more reliably, the fiber mass occupancy rate in each part of the
吸收性芯體40之肌膚對向面側、即富含吸水性纖維之部位12P中之纖維塊佔有率較佳為60質量%以下,更佳為30質量%以下,進而較佳為20質量%以下。又,富含吸水性纖維之部位12P中之纖維塊佔有率之下限值較佳為10質量%,更佳為5質量%,進而較佳為0質量%。
The skin-facing surface side of the
吸收性芯體40之非肌膚對向面側、即富含纖維塊之部位11P中之纖維塊佔有率較佳為50質量%以上,更佳為60質量%以上,進而較佳為70質量%以上,且較佳為100質量%以下,更佳為95質量%以下,進而較佳為85質量%以下。
The non-skin-facing surface side of the
富含纖維塊之部位11P之纖維塊佔有率與富含吸水性纖維之部位12P之纖維塊佔有率的差於自前者減去後者之情形時,較佳為15質量%以上,更佳為50質量%以上,進而較佳為80質量%以上。
The difference between the fiber mass occupancy rate of the fiber mass-
再者,上述富含纖維塊之部位11P及富含吸水性纖維之部位12P中之「纖維塊佔有率」之範圍以及富含纖維塊之部位11P及富含吸水性纖維之部位12P中之「纖維塊比率」之範圍分別於吸收性芯體40整體上具有一體性之情形時,將該吸收性芯體40於厚度方向上分成二等份,應用其中之肌膚對向面側作為富含纖維塊之部位11P,應用非肌膚對向面側作為富含吸水性纖維之部位12P。
Furthermore, the range of the "fiber mass occupancy rate" in the above-mentioned fiber mass-
此處所謂「吸收性芯體整體上具有一體性」係指吸收性芯體一體地形成,將積層分別形成之複數個吸收性芯體層所成之構成排除在外。後者之構成係一吸收性芯體層與另一吸收性芯體層能夠分離,兩層並非一體不可分,未成為一體。作為吸收性芯體整體上具有一體性之形態之具體例,可列舉吸收性芯體40之形成材料(纖維塊11、吸水性纖維(纖維12F))之全部一次堆積而成之形態。圖3所示之吸收體4及下述圖4所示之吸收體4A各者中之吸收性芯體40雖然具有纖維塊佔有率、纖維塊比率互不相同之2個部位(富含吸水性纖維之部位12P、富含纖維塊之部位11P),但於該2個部位12P、11P之界面,吸水性纖維(纖維12F)、構成纖維(纖維11F)彼此交絡,藉此吸收性芯體整體上具有一體性。相對於此,下述吸收體4A之變化例中之吸收性芯體40於劃分成層狀之2個部位12P、11P之界面,吸水性纖維(纖維12F)、構成纖維(纖維11F)彼此實質上並未交絡,吸收性芯體整體上不具有一體性。
Here, "the absorptive core is integrally formed as a whole" means that the absorptive core is integrally formed, and the structure of a plurality of absorptive core layers formed by lamination is excluded. The latter is constituted so that one absorbent core layer and another absorbent core layer can be separated, and the two layers are not inseparable and not integrated. As a specific example of the form in which the absorptive core body is integral as a whole, the form in which all the forming materials (
本發明中,較佳為富含吸水性纖維之部位12P僅由吸水性
纖維(纖維12F)構成之形態,若為於富含吸水性纖維之部位12P中存在纖維塊11之形態,則於可利用吸收性芯體40整體提高由纖維塊11所產生之效果之方面優異。尤其,於混合存在纖維塊11與吸水性纖維(纖維12F)之富含吸水性纖維之部位12P中,若纖維塊11與吸水性纖維(纖維12F)以交絡、或可進行交絡之狀態存在,則首先於在該富含吸水性纖維之部位12P使吸水性纖維(纖維12F)吸收經血等體液後,繼而將體液供給至富含纖維塊之部位11P內之空間,故而較佳。進而,於富含纖維塊之部位11P使纖維塊11與吸水性纖維(纖維12F)交絡更容易發揮上述效果,故而較佳。
In the present invention, it is preferable that the
於吸收性芯體40中,如圖3所示,纖維塊佔有率、纖維塊比率隨著自肌膚對向面側(正面片材2側)朝向非肌膚對向面側(背面片材3側)而逐漸增加。換言之,於吸收性芯體40中,吸水性纖維(纖維12F)隨著自肌膚對向面側朝向非肌膚對向面側而逐漸減少。即,於吸收性芯體40之厚度方向上,於吸收性芯體40之肌膚對向面及其附近,纖維塊11不存在或於吸收性芯體40中以最低之纖維塊佔有率、最低之纖維塊比率存在,於吸收性芯體40之非肌膚對向面及其附近,纖維塊11於吸收性芯體40中以最高之纖維塊佔有率、最高之纖維塊比率存在。
In the
吸收性芯體40中之纖維材料(纖維塊11、吸水性纖維(纖維12F))之配置並不限定於如圖3所示之配置、即纖維塊佔有率、纖維塊比率隨著自吸收性芯體40之厚度方向之一面側朝向另一面側而逐漸變化之配置,可於不脫離上述本發明之技術思想之範圍內適當變更。圖4中示出作為本發明之吸收體之另一實施形態的吸收體4A之與圖3相當之圖。再者,關於吸收體4A,以與上述吸收體4不同之構成部分為主進行說明,相同之構成部分標註相同之符號並省略說明。無特別說明之構成部分適當應用關
於吸收體4(吸收性芯體40)之說明。
The arrangement of the fiber materials (fiber blocks 11, water-absorbing fibers (
於圖4所示之吸收體4A中,吸收體4A於其厚度方向上,呈層狀劃分為纖維塊佔有率、纖維塊比率互不相同之2個部位(富含吸水性纖維之部位12P、富含纖維塊之部位11P)。而且,於該2個部位中,肌膚對向面側之富含吸水性纖維之部位12P及非肌膚對向面側之富含纖維塊之部位11P之纖維塊佔有率、纖維塊比率均可於吸收體4A之厚度方向上不固定。關於各部位11P、12P各者,於厚度方向上分成二等份時之肌膚對向面側部分與非肌膚對向面側部分之纖維塊佔有率之差較佳為30質量%以下,更佳為10質量%以下。於吸收體4A中,較佳為於富含吸水性纖維之部位12P與富含纖維塊之部位11P之界面,纖維塊佔有率、纖維塊比率大幅地變化。該兩部位之界面於圖4所示之形態中為吸收體4A之厚度方向之中央,即吸收體4A於厚度方向上一分為二為富含吸水性纖維之部位12P與富含纖維塊之部位11P,但該界面之位置可適當設定,兩部位之厚度亦可互不相同。
In the
於如圖4所示之吸收體4A般於吸收性芯體40中呈層狀劃分為富含吸水性纖維之部位12P與富含纖維塊之部位11P之情形時,富含吸水性纖維之部位12P較佳為自吸收性芯體40之肌膚對向面向該吸收性芯體40之厚度方向內側跨及該吸收性芯體40之厚度之20~80%之部位,更佳為跨及該厚度之30~70%之部位。又,富含纖維塊之部位11P較佳為自吸收性芯體40之非肌膚對向面向該吸收性芯體40之厚度方向內側跨及該吸收性芯體40之厚度之20~80%之部位,更佳為跨及該厚度之30~70%之部位。
In the case where the
又,於如圖4所示之吸收體4A般於吸收性芯體40中呈層狀劃分為富
含吸水性纖維之部位12P與富含纖維塊之部位11P之情形時,富含吸水性纖維之部位12P、富含纖維塊之部位11P各者之厚度較佳為0.5mm以上,更佳為1mm以上,且較佳為10mm以下,更佳為5mm以下,進而較佳為4mm以下。
Moreover, like the
吸收性芯體40之各部之厚度係藉由以下方法進行測定。再者,吸收性芯體40(吸收體4)整體之厚度、衛生棉1之厚度等亦可依據以下之方法進行測定。
The thickness of each part of the
<厚度之測定方法> <Measurement method of thickness>
將吸收性芯體(吸收體)以無皺褶或彎曲之方式靜置於水平之場所,自該吸收性芯體切出測定對象部位(例如吸收性芯體之肌膚對向面側或非肌膚對向面側)作為測定樣品。然後,測定測定樣品之5cN/cm2之荷重下之厚度。具體而言,厚度之測定例如使用厚度計PEACOCK DIAL UPRIGHT GAUGES R5-C(OZAKI MFG.CO.LTD.製造)。此時,於厚度計之前端部與測定樣品之間以荷重成為5cN/cm2之方式配置大小經調整之俯視呈圓形狀或正方形狀之平板(厚度5mm左右之壓克力板),測定厚度。厚度測定係測定10點,並算出其等之平均值而作為厚度。 The absorbent core (absorber) is placed in a horizontal place without wrinkling or bending, and the measurement target portion (for example, the skin-facing side of the absorbent core or the non-skin side of the absorbent core) is cut out from the absorbent core. opposite side) as a measurement sample. Then, the thickness of the measurement sample under a load of 5 cN/cm 2 was measured. Specifically, the thickness is measured using, for example, a thickness gauge PEACOCK DIAL UPRIGHT GAUGES R5-C (manufactured by OZAKI MFG.CO.LTD.). At this time, between the front end of the thickness gauge and the measurement sample, a circular or square flat plate (acrylic plate with a thickness of about 5 mm) whose size is adjusted so that the load becomes 5 cN/ cm2 in plan view (acrylic plate with a thickness of about 5 mm) is arranged, and the thickness is measured. . For the thickness measurement, 10 points were measured, and the average value thereof was calculated as the thickness.
於吸收體4A中,富含吸水性纖維之部位12P與富含纖維塊之部位11P於其等之界面藉由構成纖維(纖維塊11之構成纖維(纖維11F)、吸水性纖維(纖維12F))彼此之交絡而相互結合。即,於兩部位之界面,肌膚對向面側之富含吸水性纖維之部位12P之吸水性纖維(纖維12F)與非肌膚對向面側之富含纖維塊之部位11P之纖維塊11(纖維11F)相互交絡,藉此兩部位相對良好地結合,吸收體4A(吸收性芯體40)整體上成為一體。
In the
再者,作為圖4所示之吸收體4A之變化例,可列舉肌膚對向面側之富含吸水性纖維之部位12P與非肌膚對向面側之富含纖維塊之部位11P未結合之形態,其亦包含於本發明。該吸收體4A之變化例之製造係藉由如下方式進行,即,首先分別另行製造相當於富含吸水性纖維之部位12P之層與相當於富含纖維塊之部位11P之層,其次將兩層重疊。於藉由該製造方法所獲得之吸收體4A之變化例中,幾乎不存在兩部位之構成纖維(纖維11F)、吸水性纖維(纖維12F)彼此之交絡,因此吸收性芯體40整體上不成為一體,可容易地分離為富含吸水性纖維之部位12P與富含纖維塊之部位11P。
Furthermore, as a modification example of the
作為如圖3所示之吸收體4之纖維塊佔有率、纖維塊比率隨著自吸收體之厚度方向之一面側朝向另一面側而逐漸變化之形態所特有之優點,可列舉如下方面:由於吸水性纖維與纖維塊之混合比率於吸收體之厚度方向上平緩地變化,故而即便於對吸收體施加有外力之情形時,亦容易遍及厚度方向地維持介隔纖維塊之交絡狀態,容易於使用中良好地維持吸收體之緩衝性。又,作為如圖4所示之吸收體4A之於厚度方向上具有纖維塊佔有率、纖維塊比率互不相同之2個部位之形態所特有之優點,可列舉如下方面:於吸收體之肌膚對向面側與非肌膚對向面側,容易設計為各自獨立之功能。
The advantages peculiar to the form in which the fiber block occupancy rate and fiber block ratio of the
吸收體4、4A(吸收性芯體40)可使用具備轉筒之公知之纖維堆積裝置依照慣例進行製造,此時,如圖3或圖4所示之纖維材料(纖維塊11、吸水性纖維(纖維12F))之特定配置可於使用該纖維堆積裝置之製造方法中藉由適當調整纖維塊11或吸水性纖維(纖維12F)於轉筒上之纖維堆積順序等而實現。
The
吸收性芯體40亦可含有纖維塊11及吸水性纖維(纖維12F)以外之其他成分,可例示吸水性聚合物作為其他成分。圖中之符號13為吸水性聚合物。作為吸水性聚合物,一般而言使用如圖示之粒子狀者,亦可為纖維狀者。於使用粒子狀吸水性聚合物之情形時,其形狀可為球狀、塊狀、袋狀或不定形之任一者。吸水性聚合物之平均粒徑較佳為10μm以上,更佳為100μm以上,且較佳為1000μm以下,更佳為800μm以下。作為吸水性聚合物,一般而言可使用丙烯酸或丙烯酸鹼金屬鹽之聚合物或共聚物。作為其例,可列舉聚丙烯酸及其鹽以及聚甲基丙烯酸及其鹽。
The
於吸收性芯體40中,如圖3所示,吸水性聚合物13含有於吸收性芯體40之肌膚對向面側,因此含有於富含吸水性纖維之部位12P。如此,藉由在液體引入性之優劣尤其成為問題之吸收性芯體40之肌膚對向面側含有吸水性優異之吸水性聚合物13,與該肌膚對向面側為富含吸水性纖維之部位12P、即纖維塊佔有率、纖維塊比率相對較低相輔相成地,可進一步提高吸收性芯體40之肌膚對向面之液體引入性。
In the
於吸收性芯體40中,吸水性聚合物13亦可含有於吸收性芯體40之肌膚對向面側(富含吸水性纖維之部位12P)以外之部位、即富含纖維塊之部位11P。尤其,鑒於使吸水性聚合物13含有於吸收性芯體40中之主要目的為提高吸收性芯體40之肌膚對向面側之液體引入性之方面,亦可以說使吸水性聚合物13積極地含有於吸收性芯體40之非肌膚對向面側(富含纖維塊之部位11P)基本上無意義。又,若使吸水性聚合物13積極地含有於吸收性芯體40之非肌膚對向面側(富含纖維塊之部位11P),則有阻礙由富含纖維塊之部位11P所產生之作用效果(緩衝性或不易扭曲性之提高效果等)之表現之虞。考慮以上情況,吸收性芯體40中之肌膚對向面側(富含吸
水性纖維之部位12P)以外之部位、具體而言例如富含纖維塊之部位11P之吸水性聚合物13之含量較佳為少於該肌膚對向面側,亦可為零。
In the
吸收性芯體40中之吸水性聚合物13之含量相對於乾燥狀態之吸收性芯體40之總質量,較佳為5質量%以上,更佳為10質量%以上,且較佳為60質量%以下,更佳為40質量%以下。
The content of the water-
吸收性芯體40中之吸水性聚合物13之基重較佳為10g/m2以上,更佳為30g/m2以上,且較佳為100g/m2以下,更佳為70g/m2以下。
The basis weight of the water-
作為吸收性芯體40之主要特徵之一,可列舉纖維塊11之外形形狀。圖5中示出纖維塊11之2個典型之外形形狀。圖5(a)所示之纖維塊11A呈四角柱形狀、更具體而言呈長方體形狀,圖5(b)所示之纖維塊11B呈圓盤形狀。纖維塊11A、11B於具備相對向之2個基本面(base plane)111、及連結該2個基本面111之骨架面(body plane)112之方面共通。基本面111及骨架面112均為根據於對以此種纖維為主體之物品之表面之凹凸程度進行評價時所應用之等級,視為實質上無凹凸之部分。
As one of the main features of the
圖5(a)之長方體形狀之纖維塊11A具有6個平坦面,此時,該6面中具有最大面積之相對向之2面分別為基本面111,剩餘之4面分別為骨架面112。基本面111與骨架面112相互交叉、更具體而言為正交。
The cuboid-shaped
圖5(b)之圓盤形狀之纖維塊11B具有俯視呈圓形狀之相對向之2個平坦面、及連結兩平坦面之彎曲之周面,此時,該2個平坦面分別為基本面111,該周面為骨架面112。
The disk-shaped
纖維塊11A、11B於骨架面112在俯視下呈四邊形形狀、更具體而言呈長方形形狀之方面亦共通。
The fiber blocks 11A and 11B are also common in that the
吸收性芯體40中所含有之複數個纖維塊11分別為如圖5所
示之纖維塊11A、11B之具備2個對向之基本面111及連結兩基本面111之骨架面112的「定形之纖維集合體」,於該方面與作為不定形之纖維集合體之專利文獻1及2所記載之不織布片或微細纖維網不同。換言之,於透視觀察吸收性芯體40中之任意1個纖維塊11之情形(例如利用電子顯微鏡進行觀察之情形)時,該纖維塊11之透視形狀視其觀察角度而不同,每1個纖維塊11存在多個透視形狀,而吸收性芯體40中之複數個纖維塊11分別具有具備2個對向之基本面111及連結兩基本面111之骨架面112之特定透視形狀作為其多個透視形狀之一。專利文獻1及2所記載之吸收體所含有之複數個不織布片或微細纖維網實質上不具有如基本面111或骨架面112之「面」、即具有擴寬之部分,外形形狀互不相同而並非「定形」。
The plurality of fiber blocks 11 contained in the
如此,若吸收性芯體40中所含之複數個纖維塊11為由基本面111與骨架面112劃分形成之「定形之纖維集合體」,則與為如專利文獻1及2所記載之不定形之纖維集合體之情形相比,吸收性芯體40中之纖維塊11之均勻分散性提高,因此,藉由將如纖維塊11之纖維集合體配合於吸收性芯體40,可穩定地表現出所期待之效果(吸收體之柔軟性、緩衝性、壓縮回覆性等之提高效果)。又,尤其於如圖5(a)所示之長方體形狀之纖維塊11之情形時,其外表面包含2個基本面111及4個骨架面112之6個面,因此與如圖5(b)所示之具有3個外表面之圓盤形狀之纖維塊11相比,可相對較多地具有與其他纖維塊11或吸水性纖維(纖維12F)之接觸機會,交絡性提高,亦可有助於提高保形性等。
In this way, if the plurality of fiber blocks 11 contained in the
於纖維塊11中,較佳為2個基本面111之總面積大於骨架面112之總面積。即,於圖5(a)之長方體形狀之纖維塊11A中,2個基本面111各者之面積之總和大於4個骨架面112各者之面積之總和,又,於圖
5(b)之圓盤形狀之纖維塊11B中,2個基本面111各者之面積之總和大於形成圓盤形狀之纖維塊11B之周面之骨架面112之面積。於纖維塊11A、11B之任一者中,基本面111均為纖維塊11A、11B所具有之複數個面中面積最大之面。
In the
此種由2個基本面111及與兩基本面111交叉之骨架面112劃分形成之作為「定形之纖維集合體」的纖維塊11可藉由使製造方法與先前技術不同而實現。如圖6所示,較佳之纖維塊11之製造方法係使用切割器等切斷機構將成為原料之原料纖維片材10bs(組成與纖維塊11相同且尺寸大於纖維塊11之片材)切斷為定形。如此製造之複數個纖維塊11之形狀及尺寸與藉由如專利文獻1及2之先前技術所製造者相比,更具定形性地保持一致。圖6係說明圖5(a)之長方體形狀之纖維塊11A之製造方法之圖,圖6中之虛線表示切斷線。於吸收性芯體40中配合有如此將纖維片材定形地切斷所獲得之形狀及尺寸均勻之複數個纖維塊11。如上所述,作為原料纖維片材10bs,較佳為不織布。
Such a
圖5(a)之長方體形狀之纖維塊11A係如圖6所示般藉由將原料纖維片材10bs於第1方向D1及與該第1方向D1交叉(更具體而言正交)之第2方向D2上以特定之長度切斷而製造。兩方向D1、D2分別為片材10bs之面方向上之特定之一方向,片材10bs係沿與該面方向正交之厚度方向Z切斷。如此,於將原料纖維片材10bs切斷為所謂小方塊狀所獲得之複數個長方體形狀之纖維塊11A中,通常,其切斷面即片材10bs之切斷時與切割器等切斷機構接觸之面為骨架面112,非切斷面即不與該切斷機構接觸之面為基本面111。基本面111為片材10bs之正背面(與厚度方向Z正交之面),又,如上所述為纖維塊11A所具有之複數個面中面積最大之面。
The cuboid-shaped
再者,以上關於纖維塊11A之說明亦基本上適用於圖5(b)之圓盤形狀之纖維塊11B。與纖維塊11A之實質性之不同僅為原料纖維片材10bs之切斷圖案,於將片材10bs定形地切斷而獲得纖維塊11B時,只要對應於纖維塊11B之俯視形狀而將片材10bs切斷為圓形狀即可。
Furthermore, the above description about the
又,纖維塊11之外形形狀並不限定於圖5所示者,基本面111及骨架面112均可為如圖5(a)之各面111、112般不彎曲之平坦面,或亦可如圖5(b)之骨架面112(圓盤形狀之纖維塊11B之周面)為彎曲面。又,基本面111與骨架面112亦可相互為同形狀同尺寸。
In addition, the outer shape of the
如上所述,纖維塊11(11A、11B)所具有之2種面(基本面111、骨架面112)被分類為,藉由利用製造纖維塊11時之切割器等切斷機構將原料纖維片材10bs切斷所形成之切斷面(骨架面112)、與片材10bs本來所具有之面且不與該切斷機構接觸之非切斷面(基本面111)。而且,起因於是否為該切斷面之差異,作為切斷面之骨架面112具有如下特徵:與作為非切斷面之基本面111相比,纖維端部之每單位面積之數量較多。此處所謂「纖維端部」係指纖維塊11之構成纖維(纖維11F)之長度方向端部。通常,於作為非切斷面之基本面111亦存在纖維端部,但由於骨架面112係藉由原料纖維片材10bs之切斷所形成之切斷面,故而包含藉由該切斷所形成之構成纖維(纖維11F)之切斷端部的纖維端部於骨架面112之整體存在多個,即,纖維端部之每單位面積之數量多於基本面111之纖維端部之每單位面積之數量。
As described above, the two types of surfaces (the
存在於纖維塊11之各面(基本面111、骨架面112)之纖維端部對於使該纖維塊11與吸收性芯體40中所含之其他纖維塊11或吸水性纖維(纖維12F)之間形成交絡有用。又,一般而言,纖維端部之每單位面積
之數量越多,則越可提高交絡性,因此可有助於提高吸收性芯體40之保形性等各特性。而且,如上所述,纖維塊11之各面之纖維端部之每單位面積之數量並不均勻,關於該纖維端部之每單位面積之數量,「骨架面112>基本面111」之大小關係成立,因此經由纖維塊11之與其他纖維(其他纖維塊11、吸水性纖維(纖維12F))之交絡性視該纖維塊11之面而不同,骨架面112之交絡性高於基本面111。即,利用經由骨架面112之與其他纖維之交絡進行之結合之結合力較經由基本面111之結合力強,於1個纖維塊11中,於基本面111與骨架面112,與其他纖維之結合力可能產生差異。一般而言,該結合力越強,該被結合之纖維之動作之自由度越受到限制,吸收性芯體40整體上之強度(保形性)提高,但另一方面,有柔軟度降低之傾向。
The fiber ends present on each surface (
如此,於吸收性芯體40中,其中所含之複數個纖維塊11各者對於其周邊之其他纖維(其他纖維塊11、吸水性纖維(纖維12F))以2種結合力進行交絡,藉此,吸收性芯體40成為兼具適度之柔軟度與強度(保形性)者。而且,於依照慣例使用具有此種優異之特性之吸收性芯體40作為吸收性物品之吸收體之情形時,可對該吸收性物品之穿著者提供舒適之穿著感,並且有效地防止因穿著時之穿著者之體壓等外力而破壞吸收性芯體40之不良情況。
In this way, in the
尤其,如上所述,圖5所示之纖維塊11(11A、11B)之2個基本面111之總面積大於骨架面112之總面積。因此,意味著由於纖維端部之每單位面積之數量相對較少故而與其他纖維之交絡性相對較低的基本面111之總面積大於具有與其相反之性質之骨架面112。因此,圖5所示之纖維塊11(11A、11B)與整個表面上均勻地存在纖維端部之纖維塊相比,與周邊之其他纖維(其他纖維塊11、吸水性纖維(纖維12F))之交絡容易得到
抑制,又,即便與周邊之其他纖維交絡,亦容易以相對較弱之結合力進行交絡,因此不易成為較大之結塊,可對吸收性芯體40賦予優異之柔軟性。
In particular, as described above, the total area of the two
相對於此,專利文獻1及2所記載之不織布片或微細纖維網如上所述係將原料纖維片材藉由如切碎機之切斷機切斷為不定形等而製造,因此不會成為具有如基本面111或骨架面112之「面」之定形之片狀之纖維塊,並且由於在其製造時會對纖維塊整體施加切斷處理之外力,故而於纖維塊整體無規地形成構成纖維之纖維端部,難以充分地表現出由該纖維端部所產生之上述作用效果。
On the other hand, the nonwoven sheets and microfiber webs described in
就更確實地發揮上述由纖維端部所產生之作用效果之觀點而言,基本面111(非切斷面)之纖維端部之每單位面積之數量N1與骨架面112(切斷面)之纖維端部之每單位面積之數量N2的比率以N1<N2為前提,以N1/N2計,較佳為0以上,更佳為0.05以上,且較佳為0.90以下,更佳為0.60以下。更具體而言,N1/N2較佳為0以上且0.90以下,更佳為0.05以上且0.60以下。 From the viewpoint of more reliably exerting the above-mentioned effects of the fiber ends, the number N 1 per unit area of the fiber ends of the basic plane 111 (non-cut plane) and the skeleton plane 112 (cut plane) The ratio of the number N 2 per unit area of the fiber ends is based on the premise of N 1 <N 2 , and is calculated in terms of N 1 /N 2 , preferably 0 or more, more preferably 0.05 or more, and preferably 0.90 or less, More preferably, it is 0.60 or less. More specifically, N 1 /N 2 is preferably 0 or more and 0.90 or less, and more preferably 0.05 or more and 0.60 or less.
基本面111之纖維端部之每單位面積之數量N1較佳為0個/mm2以上,更佳為3個/mm2以上,且較佳為8個/mm2以下,更佳為6個/mm2以下。
The number N 1 per unit area of the fiber ends of the
骨架面112之纖維端部之每單位面積之數量N2較佳為5個/mm2以上,更佳為8個/mm2以上,且較佳為50個/mm2以下,更佳為40個/mm2以下。
The number N 2 per unit area of the fiber ends of the
基本面111、骨架面112之纖維端部之每單位面積之數量係藉由以下方法進行測定。
The number per unit area of the fiber ends of the
<纖維塊之各面之纖維端部之每單位面積之數量之測定方法> <Measurement method of the number of fiber ends per unit area of each side of the fiber block>
對於包含測定對象之纖維之構件(纖維塊),使用紙雙面膠帶 (Nichiban股份有限公司製造之Nicetack NW-15)將測定片貼附於試樣台。繼而,對測定片進行鉑塗佈。塗佈係使用日立那珂精器股份有限公司製造之離子濺鍍裝置E-1030型(商品名),濺鍍時間設為120秒。對於測定片之切斷面,使用JEOL股份有限公司製造之JCM-6000型電子顯微鏡於倍率100倍下對基本面及骨架面進行觀察。於該倍率100倍之觀察畫面中,於測定對象面(基本面或骨架面)之任意位置設定縱1.2mm、橫0.6mm之長方形區域,且以該長方形區域之面積占該觀察畫面之面積之90%以上之方式調整觀察角度等,其後測定該長方形區域內所含之纖維端部之個數。但是,於倍率100倍之觀察畫面中,於纖維塊之測定對象面小於1.2mm×0.6mm,且上述長方形區域之面積於該觀察畫面整體所占之比率未達90%之情形時,於使觀察倍率大於100倍後,與上述同樣地測定該測定對象面之上述長方形區域內所含之纖維端部之數量。此處成為個數測定對象之「纖維端部」係纖維塊之構成纖維之長度方向端部,即便該構成纖維之長度方向端部以外之部分(長度方向中間部)自測定對象面延出,該長度方向中間部亦不作為個數測定對象。繼而,根據下述式,算出纖維塊之測定對象面(基本面或骨架面)之纖維端部之每單位面積之數量。針對10個纖維塊各者,依照上述程序,測定基本面及骨架面各者之纖維端部之每單位面積之數量,將該等複數個測定值之平均值作為該測定對象面之纖維端部之每單位面積之數量。 For the member (fiber block) containing the fiber to be measured, use paper double-sided tape (Nicetack NW-15 by Nichiban Co., Ltd.) The measurement sheet was attached to the sample stage. Next, platinum coating was performed on the measurement piece. For the coating, an ion sputtering apparatus E-1030 (trade name) manufactured by Hitachi Naka Precision Co., Ltd. was used, and the sputtering time was set to 120 seconds. For the cut surface of the measurement piece, the fundamental surface and the skeleton surface were observed at a magnification of 100 times using a JCM-6000 electron microscope manufactured by JEOL Co., Ltd. In the observation screen with a magnification of 100 times, a rectangular area with a length of 1.2 mm and a width of 0.6 mm is set at any position on the measurement object surface (basic surface or skeleton surface), and the area of the rectangular area accounts for the area of the observation screen. Adjust the viewing angle, etc. in a manner of 90% or more, and then measure the number of fiber ends contained in the rectangular area. However, in the observation screen with a magnification of 100 times, when the measurement object surface of the fiber block is smaller than 1.2 mm × 0.6 mm, and the ratio of the area of the above-mentioned rectangular area to the entire observation screen does not reach 90%, the use of After the observation magnification was greater than 100 times, the number of fiber ends contained in the rectangular region of the measurement object surface was measured in the same manner as described above. Here, the "fiber end portion" that is the object of the number measurement is the end portion in the longitudinal direction of the constituent fibers of the fiber mass, even if the portion other than the end portion in the longitudinal direction of the constituent fiber (the middle portion in the longitudinal direction) extends from the surface to be measured, The intermediate portion in the longitudinal direction is also not subject to the number measurement. Next, the number per unit area of the fiber end of the measurement object surface (basic surface or skeleton surface) of the fiber block was calculated according to the following formula. For each of 10 fiber lumps, according to the procedure described above, the number of fiber ends per unit area of each of the basic plane and the skeleton plane was measured, and the average value of the plurality of measured values was taken as the fiber end of the measurement target plane. quantity per unit area.
纖維塊之測定對象面(基本面或骨架面)之纖維端部之每單位面積之數量(個數/mm2)=長方形區域(1.2×0.6mm)中所含之纖維端部之個數/該長方形區域之面積(0.72mm2) The number of fiber ends per unit area (number/mm 2 ) of the measurement object surface (basic surface or skeleton surface) of the fiber block = the number of fiber ends contained in the rectangular area (1.2×0.6mm)/ The area of the rectangular area (0.72mm 2 )
於纖維塊11之基本面111如圖5(a)所示之纖維塊11A般於俯
視下呈長方形形狀之情形時,就提高吸收性芯體40中之纖維塊11之均勻分散性之觀點而言,較佳為該長方形形狀之短邊111a與含有該纖維塊11(11A)之吸收性芯體40之厚度同等或較其短。短邊111a之長度與吸收性芯體40之厚度之比率以前者/後者計,較佳為0.03以上,更佳為0.08以上,且較佳為1以下,更佳為0.5以下。
On the
吸收性芯體40之厚度較佳為1mm以上,更佳為2mm以上,且較佳為15mm以下,更佳為10mm以下,進而較佳為6mm以下。吸收性芯體40之厚度係藉由上述方法進行測定。
The thickness of the
纖維塊11(11A、11B)之各部之尺寸等較佳為以如下方式設定。纖維塊11之各部之尺寸可基於下述纖維塊11之外形形狀之特定作業時之電子顯微鏡照片等進行測定。
It is preferable to set the dimension etc. of each part of the fiber block 11 (11A, 11B) as follows. The size of each part of the
於基本面111為如圖5(a)所示之俯視長方形形狀之情形時,其短邊111a之長度L1較佳為0.3mm以上,更佳為0.5mm以上,且較佳為10mm以下,更佳為6mm以下。俯視長方形形狀之基本面111之長邊111b之長度L2較佳為0.3mm以上,更佳為2mm以上,且較佳為30mm以下,更佳為15mm以下。
When the
再者,於基本面111如圖5所示般為纖維塊11所具有之複數個面中具有最大面積之面之情形時,長邊111b之長度L2與纖維塊11之最大跨度長度一致,該最大跨度長度與圓盤形狀之纖維塊11B之俯視圓形狀之基本面111之直徑一致。
Furthermore, when the
短邊111a之長度L1與長邊111b之長度L2之比率以L1/L2計,較佳為0.003以上,更佳為0.025以上,且較佳為0.5以下。
The ratio of the length L1 of the
纖維塊11之厚度T、即2個對向之基本面111間之長度T較佳為0.1mm
以上,更佳為0.3mm以上,且較佳為10mm以下,更佳為6mm以下。
The thickness T of the
又,吸收性芯體40較佳為以於該吸收性芯體40之所有面容易發揮因纖維塊11之存在所產生之作用效果之方式於力學上為各向同性。因此,較佳為於吸收性芯體40之整體高密度且均勻地分佈有纖維塊11。就該觀點而言,較佳為於吸收性芯體40之相互正交之2方向之投影觀察下,於任意10mm見方之單位區域存在複數個纖維塊11之重疊部。作為此處所謂「相互正交之2方向之投影觀察」,典型而言可列舉吸收性芯體(吸收體)之厚度方向之投影觀察(即,對吸收性芯體自其肌膚對向面或非肌膚對向面觀察之情形)、及與該厚度方向正交之方向之投影觀察(即,對吸收性芯體自其側面觀察之情形)。
Moreover, it is preferable that the
圖7(a)中示出本發明之纖維塊之一實例之電子顯微鏡照片,圖7(b)中示出依據該電子顯微鏡照片模式性地表示纖維塊11之圖。吸收性芯體40中所含之複數個纖維塊11中,如圖7所示,可包含具有本體部110、及含有自該本體部110向外側延出之纖維11F且纖維密度低於該本體部110(每單位面積之纖維之數量較少)之延出纖維部113者。再者,吸收性芯體40中,亦可包含不具有延出纖維部113之纖維塊11、即僅由本體部110構成之纖維塊11。延出纖維部113係存在於上述纖維塊11之各面(基本面111、骨架面112)之纖維端部之一種,且係該纖維端部中自纖維塊11之各面向外側延出之纖維端部。
FIG. 7( a ) shows an electron micrograph of an example of the fiber mass of the present invention, and FIG. 7( b ) shows a diagram schematically showing the
本體部110係由上述2個對向之基本面111與連結兩基本面111之骨架面112劃分形成之部分。本體部110係構成纖維塊11之主體且形成纖維塊11之定形之外形形狀之部分,纖維塊11所具有之較高之柔軟性、緩衝性、壓縮回覆性等各特性基本上源於本體部110,因此較大。另一方
面,延出纖維部113主要有助於提高吸收性芯體40中所含有之複數個纖維塊11彼此或纖維塊11與吸水性纖維(纖維12F)之交絡性,直接關係到吸收性芯體40之保形性之提高,此外,亦對纖維塊11之吸收性芯體40之均勻分散性等產生影響,而可間接地補強由本體部110所產生之作用效果。
The
本體部110與延出纖維部113相比,纖維密度較高,即每單位面積之纖維之數量較多。又,通常本體部110本身之纖維密度均勻。本體部110於纖維塊11之總質量中所占之比率通常至少為40質量%以上,較佳為50質量%以上,更佳為60質量%以上,進而較佳為85質量%以上。本體部110與延出纖維部113可藉由下述外形形狀之特定作業進行區分。
Compared with the extending
特定出吸收性芯體40中所含之纖維塊11之本體部110之外形形狀的作業可藉由著眼於吸收性芯體40中之纖維密度之高低差(每單位面積之纖維數量之多少)或纖維之種類、纖維直徑之不同等,確認本體部110與其以外之部分之「邊界」而進行。本體部110之纖維密度高於存在於其周圍之延出纖維部113,又,通常,作為本體部110之構成纖維的合成纖維與吸水性纖維(纖維12F)(典型而言為纖維素系纖維)於質上及/或尺寸上不同,因此即便為混合存在多個纖維塊11及吸水性纖維(纖維12F)之吸收性芯體40,亦可藉由著眼於上述方面而容易地確認上述邊界。如此確認之邊界為基本面111或骨架面112之周緣(邊),藉由該邊界確認作業特定出基本面111及骨架面112,進而特定出本體部110。該邊界確認作業可藉由使用電子顯微鏡,視需要以複數個觀察角度觀察對象物(吸收體4)而實施。尤其,於吸收性芯體40中所含之纖維塊11為如圖5所示之纖維塊11A、11B之「2個基本面111之總面積大於骨架面112之總面積」者之情形時,尤其為基本面111成為該纖維塊11之具有最大面積之面者情形時,可
相對容易地特定出該較大面積之基本面111,因此可順利地進行本體部110之外形形狀之特定作業。
The work of specifying the outer shape of the
如圖7所示,延出纖維部113包含自形成本體部110之外表面之基本面111及骨架面112中之至少1個面向外側延出之本體部110之構成纖維(纖維11F)。圖7(b)係自基本面111(纖維塊11之複數個面中具有最大面積之面)側俯視纖維塊11之圖,自與該基本面111交叉之骨架面112延出多個纖維11F而形成延出纖維部113。
As shown in FIG. 7 , the extending
延出纖維部113之形態並無特別限制。延出纖維部113有包含1根纖維11F之情形,亦有如下述延出纖維束部113S般包含複數個纖維11F之情形。又,延出纖維部113包含自本體部110延出之纖維11F之長度方向端部,但有除包含此種纖維端部以外,亦可包含纖維11F之長度方向兩端部以外之部分(長度方向中間部)之情形。即,於纖維塊11中,有構成纖維(纖維11F)之長度方向之兩端部存在於本體部110,且其以外之部分即長度方向中間部自本體部110向外側呈環狀延出(突出)之情形,而該情形時之延出纖維部113包含該纖維11F之環狀之突出部。
The form of the
延出纖維部113之主要作用之一如上所述為使吸收性芯體40中含有之複數個纖維塊11彼此、或纖維塊11與吸水性纖維(纖維12F)相互交絡。一般而言,若延出纖維部113之自本體部110之延出長度變長,或延出纖維部113之粗度變粗,或1個纖維塊11所具有之延出纖維部113之數量變多,則經由該延出纖維部113交絡之物體彼此之連接變強而不易解除交絡,因此更穩定地發揮出本發明之特定效果。
One of the main functions of the
於纖維塊11為如圖6所示將原料纖維片材10bs定形地切斷所獲得者之情形時,延出纖維部113相對較多地存在於作為其切斷面之骨
架面112,相對於此,於作為非切斷面之基本面111完全不存在,或即便存在,其數量亦較骨架面112少。延出纖維部113如此偏集存在於作為切斷面之骨架面112之原因在於,延出纖維部113之大部分為藉由原料纖維片材之切斷所產生之「絨毛」。即,藉由原料纖維片材10bs之切斷所形成之骨架面112於其切斷時被切割器等切斷機構整體地摩擦,因此容易形成包含片材10bs之構成纖維(纖維11F)之絨毛,容易產生所謂起毛。雖然亦取決於原料纖維片材之種類,但若使切斷線之間隔變短、或使切斷速度變慢等,則容易形成延出纖維部113,亦可調整其長度。另一方面,作為非切斷面之基本面111不存在與此種切斷機構之摩擦,因此不易形成絨毛即延出纖維部113。
When the
關於原料纖維片材10bs切斷時之切斷線之間隔L1a(第1方向之間隔,參照圖6)及間隔L2a(第2方向之間隔,參照圖6),就促進上述延出纖維部113之形成等觀點、及使纖維塊11表現出特定之效果並且確保所需之尺寸之觀點等而言,較佳為0.3mm以上,更佳為0.5mm以上,且較佳為30mm以下,更佳為15mm以下。
Regarding the interval L1a (interval in the first direction, see FIG. 6 ) and interval L2a (interval in the second direction, see FIG. 6 ) between the cutting lines at the time of cutting the raw fiber sheet 10bs, the above-mentioned extending
如圖7所示,作為延出纖維部113之一種,纖維塊11具有包含自本體部110、更具體而言自骨架面112向外側延伸之複數個纖維11F之延出纖維束部113S。纖維塊11所具有之延出纖維部113中之至少一者可為該延出纖維束部113S。延出纖維束部113S係自骨架面112延出之複數個纖維11F彙集而構成者,與延出纖維部113相比,於自骨架面112之延出長度較長之方面具有特徵。延出纖維束部113S亦可存在於基本面111,典型而言,如圖7所示,存在於骨架面112,於基本面111完全不存在,或即便存在,其數量亦較骨架面112少。其原因與延出纖維部113主要存在於作為
切斷面之骨架面112之原因相同,如上所述。
As shown in FIG. 7 , the
藉由使纖維塊11具有此種較長且較粗之應當亦稱為大型延出纖維部113之延出纖維束部113S,纖維塊11彼此或纖維塊11與吸水性纖維(纖維12F)之交絡進一步變強,結果,更穩定地發揮出因纖維塊11之存在所產生之本發明之特定效果。延出纖維束部113S藉由實施上述容易起毛之條件下之原料纖維片材10bs之切斷(參照圖6)而變得容易形成。
By making the fiber blocks 11 have such a longer and thicker extended
延出纖維束部113S自本體部110之延出長度、即自骨架面112(切斷面)之延出長度較佳為0.2mm以上,更佳為0.5mm以上,且較佳為7mm以下,更佳為4mm以下。延出纖維束部113S之延出長度可於上述纖維塊11之外形形狀之特定作業(邊界確認作業)中進行測定。具體而言,例如利用Keyence製造之顯微鏡(50倍率),於丙烯酸製透明樣品台之表面貼附3M股份有限公司製造之雙面膠帶,於其上載置纖維塊11並固定後,依照上述外形形狀之特定作業,特定出該纖維塊11之外形形狀後,測定自該外形形狀延出之纖維11F中之延出量之長度,將該測得之延出量之長度作為延出纖維束部113S之延出長度。
The extension length of the extended
延出纖維束部113S較佳為使該複數個構成纖維(纖維11F)相互熱熔合。該延出纖維束部113S之熱熔合部通常與該延出纖維束部113S之其他部分(非熱熔合部)相比,與該延出纖維束部113S之長度方向正交之方向之跨度長度(於該熱熔合部之剖面為圓形之情形時為直徑)較長。藉由使延出纖維束部113S具有此種亦可稱為大徑部之熱熔合部,延出纖維束部113S本身之強度提高,藉此,經由延出纖維束部113S交絡之纖維塊11彼此或纖維塊11與吸水性纖維(纖維12F)之交絡進一步變強。又,若延出纖維束部113S具有熱熔合部,則具有如下優點:不僅於該延出纖維
束部113S為乾燥狀態之情形時,而且於吸收水分而成為濕潤狀態之情形時,亦會提高該延出纖維束部113S本身之強度、保形性等。而且,藉由該優點,於將吸收性芯體40應用於吸收性物品之情形時,吸收性芯體40處於乾燥狀態之情形自不用說,即便於吸收穿著者排泄之尿或經血等體液而成為濕潤狀態之情形時,亦可穩定地發揮上述因纖維塊11之存在所產生之作用效果。此種具有熱熔合部之延出纖維束部113S可藉由在如圖6所示之纖維塊11之製造步驟、即纖維塊11之原料纖維片材10bs之切斷步驟中,使用「具有構成纖維彼此之熱熔合部之纖維片材」作為原料纖維片材10bs而製造。
It is preferable that the extended
纖維塊11之構成纖維(纖維11F)包含合成纖維。用作纖維11F之合成纖維較佳為吸水性低於吸水性纖維(纖維12F)者(弱吸水性),尤佳為非吸水性合成纖維。纖維塊11之構成纖維(纖維11F)可包含合成纖維以外之纖維成分(例如天然纖維),藉由使纖維塊11之構成纖維(纖維11F)包含弱親水性纖維、較佳為非吸水性纖維,不僅於吸收性芯體40為乾燥狀態之情形時,而且於吸收水分(尿或經血等體液)而處於濕潤狀態之情形時,亦穩定地發揮上述因纖維塊11之存在所產生之作用效果(保形性、柔軟性、緩衝性、壓縮回覆性、不易扭曲性等之提高效果)。作為纖維塊11中之構成纖維(纖維11F)的合成纖維之含量相對於纖維塊11之總質量,較佳為90質量%以上,最佳為100質量%,即,纖維塊11僅由合成纖維形成。尤其是於作為構成纖維(纖維11F)之合成纖維為非吸水性者之情形時,更穩定地發揮上述因纖維塊11之存在所產生之作用效果。
The constituent fibers (
本說明書中,「吸水性」之用語係如例如紙漿可謂吸水性般對於業者而言可容易理解者。同樣地,亦可容易理解熱塑性纖維為弱吸 水性(尤其是非吸水性)。另一方面,纖維之吸水性之程度可根據藉由下述方法所測得之水分率之值比較吸水性之相對不同,並且亦可規定更佳之範圍。該水分率之值越大,則纖維之吸水性越強。作為吸水性纖維,該水分率較佳為6%以上,更佳為10%以上。另一方面,合成纖維之該水分率較佳為未達6%,更佳為未達4%。再者,於水分率未達6%之情形時,該纖維可判定為非吸水性纖維。 In the present specification, the term "water absorption" means something that can be easily understood by a trader as, for example, pulp can be said to be water absorptive. Similarly, it is also easy to understand that thermoplastic fibers are weakly absorbent Water (especially non-absorbent). On the other hand, the degree of water absorption of the fiber can be compared with the relative difference of the water absorption according to the value of the moisture content measured by the following method, and a better range can also be specified. The larger the value of the moisture content, the stronger the water absorption of the fiber. As a water-absorbent fiber, the moisture content is preferably 6% or more, more preferably 10% or more. On the other hand, the moisture content of the synthetic fiber is preferably less than 6%, more preferably less than 4%. Furthermore, when the moisture content is less than 6%, the fiber can be judged as a non-absorbent fiber.
<水分率之測定方法> <Measurement method of moisture content>
水分率係利用JIS P8203之水分率試驗方法算出。即,於將纖維試樣在溫度40℃、相對濕度80%RH之試驗室中靜置24小時後,於該室內測定絕對乾燥處理前之纖維試樣之重量W(g)。其後,於溫度105±2℃之電乾燥機(例如Isuzu股份有限公司製作所製造)內靜置1小時,進行纖維試樣之絕對乾燥處理。於絕對乾燥處理後,於溫度20±2℃、相對濕度65±2%之標準狀態之試驗室中,於利用旭化成股份有限公司製造之Saran Wrap(註冊商標)包裹纖維試樣之狀態下,將矽膠(例如豐田化工股份有限公司)放入至玻璃乾燥器內(例如Tech jam股份有限公司製造),靜置至纖維試樣成為溫度20±2℃。其後,稱量纖維試樣之恆量W'(g),根據下式求出纖維試樣之水分率。水分率(%)=(W-W'/W')×100 The moisture content was calculated by the moisture content test method of JIS P8203. That is, after the fiber sample was left to stand for 24 hours in a test chamber at a temperature of 40°C and a relative humidity of 80% RH, the weight W (g) of the fiber sample before absolute drying was measured in the chamber. After that, it was left to stand in an electric dryer (for example, manufactured by Isuzu Co., Ltd.) at a temperature of 105±2° C. for 1 hour to perform absolute drying treatment of the fiber sample. After the absolute drying treatment, the fiber samples were wrapped with Saran Wrap (registered trademark) manufactured by Asahi Kasei Co., Ltd. in a standard laboratory at a temperature of 20±2°C and a relative humidity of 65±2%. Silica gel (for example, Toyota Chemical Co., Ltd.) is put into a glass dryer (for example, manufactured by Tech jam Co., Ltd.), and it is left to stand until the fiber sample has a temperature of 20±2°C. Then, the constant weight W'(g) of the fiber sample was weighed, and the moisture content of the fiber sample was calculated|required by the following formula. Moisture rate (%)=(W-W'/W')×100
又,同樣地,就於吸收性芯體40為乾燥狀態及濕潤狀態之任一狀態下均可於保形性、柔軟性、緩衝性、壓縮回覆性、不易扭曲性等方面表現出優異效果之觀點而言,纖維塊11較佳為具有複數個熱塑性纖維相互熱熔合之三維結構。
Also, similarly, from the viewpoint of showing excellent effects in terms of shape retention, softness, cushioning properties, compression recovery properties, and resistance to twisting, etc., in either a dry state or a wet state of the
又,為了獲得此種三維地分散有複數個熱熔合部之纖維塊
11,用作纖維塊11之構成纖維(纖維11F)之合成纖維較佳為熱塑性纖維。又,如上所述,延出纖維束部113S較佳為具有熱熔合部,而藉由使纖維塊11之構成纖維(纖維11F)為熱塑性纖維,亦可獲得該延出纖維束部113S之較佳形態。
Furthermore, in order to obtain such a fiber mass in which a plurality of thermally fused portions are dispersed three-
為了獲得三維地分散有複數個熱熔合部之纖維塊11,只要同樣地構成該原料纖維片材10bs(參照圖6)即可,又,此種三維地分散有複數個熱熔合部之原料纖維片材10bs如上所述可藉由對以熱塑性纖維為主體之纖維網或不織布實施熱風處理等熱處理而製造。
In order to obtain a
關於作為纖維塊11之構成纖維(纖維11F)之素材較佳之非吸水性合成樹脂(熱塑性樹脂),例如可列舉:聚乙烯、聚丙烯等聚烯烴;聚對苯二甲酸乙二酯等聚酯;尼龍6、尼龍66等聚醯胺;聚丙烯酸、聚甲基丙烯酸烷基酯、聚氯乙烯、聚偏二氯乙烯等;可單獨使用該等之1種或組合使用2種以上。再者,纖維11F可為由1種合成樹脂(熱塑性樹脂)或混合有2種以上之合成樹脂之摻合聚合物所構成之單一纖維,或者亦可為複合纖維。此處所謂複合纖維係指利用紡絲頭將成分不同之2種以上之合成樹脂複合並同時進行紡絲所獲得之合成纖維(熱塑性纖維),且係指以複數種成分分別於纖維之長度方向上連續之結構於單纖維內相互接著者。複合纖維之形態有芯鞘型、並列型等,並無特別限制。
Examples of non-water-absorbent synthetic resins (thermoplastic resins) that are preferable as the material of the constituent fibers (
又,就進一步提高初期排泄中之體液之引入性之觀點而言,較佳為纖維塊11與水之接觸角未達90度、尤其為70度以下。作為此種纖維,藉由依照慣例利用親水化劑對上述非吸水性合成纖維進行處理而獲得。作為親水化劑,可使用通常之界面活性劑。
Moreover, it is preferable that the contact angle of the
<接觸角之測定方法> <Measuring method of contact angle>
自測定對象(吸收性芯體)取出纖維,測定水對該纖維之接觸角。作為測定裝置,使用協和界面科學股份有限公司製造之自動接觸角計MCA-J。接觸角之測定使用脫離子水。將自噴墨方式水滴噴出部(Cluster Technology公司製造,噴出部孔徑為25μm之脈衝噴射器CTC-25)噴出之液量設定為20微微升,將水滴滴下至纖維之正上方。將滴下之情況錄像於與水平地設置之相機連接之高速度錄像裝置。就其後進行圖像解析之觀點而言,錄像裝置較理想為組入有高速度擷取裝置之個人電腦。本測定中,每17msec記錄一次圖像。於所記錄的影像中,利用附屬軟體FAMAS(軟體之版本設為2.6.2,解析方法設為液滴法,解析方法設為θ/2法,圖像處理演算法設為無反射,圖像處理影像模式設為圖框,臨限位準設為200,不進行曲率修正)對水滴滴落至纖維之最初圖像進行圖像解析,算出水滴接觸空氣之面與纖維所成之角,作為接觸角。自測定對象物取出之纖維係裁斷為纖維長1mm,將該纖維載於接觸角計之樣品台,維持為水平。針對每1根纖維,測定不同之2個部位之接觸角。計測N=5根之接觸角至小數點後1位,將合計10個部位之測定值進行平均,將所獲得之值(於小數點後第2位四捨五入)定義為該纖維與水之接觸角。測定環境設為室溫22±2℃、濕度65±2%RH。 The fiber was taken out from the measurement object (absorbent core), and the contact angle of water with respect to the fiber was measured. As a measuring apparatus, an automatic contact angle meter MCA-J manufactured by Kyowa Interface Science Co., Ltd. was used. Deionized water was used for the measurement of the contact angle. The amount of liquid ejected from an ink jet water droplet ejection unit (CTC-25, a pulse ejector with a diameter of 25 μm in the ejection unit, manufactured by Cluster Technology) was set to 20 picoliters, and the water droplets were dropped directly above the fibers. The dripping condition was recorded on a high-speed recording device connected to a horizontally arranged camera. From the viewpoint of subsequent image analysis, the video recording device is preferably a personal computer incorporating a high-speed capture device. In this measurement, images were recorded every 17 msec. In the recorded images, use the attached software FAMAS (the software version is set to 2.6.2, the analysis method is set to droplet method, the analysis method is set to θ/2 method, the image processing algorithm is set to no reflection, and the image The processing image mode is set to the frame, the critical level is set to 200, and no curvature correction is performed.) Perform image analysis on the initial image of the water droplet falling on the fiber, and calculate the angle formed by the surface of the water droplet in contact with the air and the fiber, as Contact angle. The fiber taken out from the object to be measured was cut to a fiber length of 1 mm, and the fiber was placed on the sample stage of the contact angle meter and maintained horizontally. For each fiber, the contact angles at two different locations were measured. Measure the contact angle of N=5 pieces to 1 decimal place, average the measured values of 10 places in total, and define the obtained value (rounded up to the second decimal place) as the contact angle between the fiber and water . The measurement environment was set at a room temperature of 22±2°C and a humidity of 65±2%RH.
再者,於將測定對象之吸收體(吸收性芯體)用作吸收性物品等其他物品之構成構件,取出該吸收體進行評價測定之情形時,於該吸收體藉由接著劑、熔合等而被固定於其他構成構件之情形時,於不對纖維之接觸角造成影響之範圍內,藉由對該固定部分吹送冷噴霧之冷風等方法去除接著力後取出。該程序於本案說明書中的所有測定中共通。 Furthermore, when the absorber (absorptive core) to be measured is used as a constituent member of other articles such as absorbent articles, and the absorber is taken out for evaluation and measurement, the absorber is subjected to adhesive, fusion, etc. When it is fixed to other structural members, within the range that does not affect the contact angle of the fibers, the adhesive force is removed by blowing cold air with cold spray to the fixed part and then taken out. This procedure is common to all assays in this specification.
作為吸水性纖維(纖維12F),可使用先前用作此種吸收性物品之吸收體之形成材料之吸水性纖維。作為吸水性纖維,例如可列舉:針葉樹紙漿或闊葉樹紙漿等木漿、棉紙漿或麻紙漿等非木漿等天然纖維;陽離子化紙漿、絲光化紙漿等改性紙漿;銅氨、嫘縈等再生纖維等;可單獨使用該等之1種或混合使用2種以上。如上所述,鑒於吸水性纖維(纖維12F)之主要作用為提高吸收體4之液體吸收性這一方面,作為吸水性纖維(纖維12F),較佳為天然纖維、再生纖維(纖維素系纖維)。
As the water-absorbent fiber (
於吸收體4中,纖維塊11與吸水性纖維(纖維12F)之含有質量比並無特別限定,只要根據纖維塊11之構成纖維(合成纖維;纖維11F)及吸水性纖維(纖維12F)之種類等適當調整即可。例如,於纖維塊11之構成纖維(纖維11F)為熱塑性纖維(非吸水性合成纖維)、吸水性纖維(纖維12F)為纖維素系吸水性纖維之情形時,就更確實地發揮本發明之特定效果之觀點而言,纖維塊11與吸水性纖維(纖維12F)之含有質量比以前者(纖維塊11)/後者(吸水性纖維(纖維12F))計,較佳為20/80~80/20,更佳為40/60~60/40。
In the
吸收體4中之纖維塊11之含量相對於乾燥狀態之吸收體4之總質量,較佳為20質量%以上,更佳為40質量%以上,且較佳為80質量%以下,更佳為60質量%以下。
The content of the fiber lumps 11 in the
吸收體4中之吸水性纖維(纖維12F)之含量相對於乾燥狀態之吸收體4之總質量,較佳為20質量%以上,更佳為40質量%以上,且較佳為80質量%以下,更佳為60質量%以下。
The content of the water-absorbent fibers (
吸收體4中之纖維塊11之基重較佳為32g/m2以上,更佳為80g/m2以上,且較佳為640g/m2以下,更佳為480g/m2以下。
The basis weight of the
吸收體4中之吸水性纖維(纖維12F)之基重較佳為32g/m2以上,更佳為80g/m2以上,且較佳為640g/m2以下,更佳為480g/m2以下。
The basis weight of the absorbent fibers (
吸收體4可與包含此種纖維材料之吸收體同樣地製造。如上所述,纖維塊11如圖6所示,可藉由使用切割器等切斷機構將成為原料之原料纖維片材(組成與纖維塊11相同且尺寸大於纖維塊11之片材)於相互交叉(正交)之2個方向上切斷而製造,如此製造之複數個纖維塊11為形狀及尺寸均勻之「定形之纖維集合體」(例如本體部110為長方體形狀)。含有纖維塊11與吸水性纖維(纖維12F)之吸收體4例如可使用具備轉筒之公知纖維堆積裝置依照慣例進行製造。典型而言,該纖維堆積裝置具備外周面形成有集聚用凹部之轉筒、及內部具有向該集聚用凹部搬送吸收性芯體40之原材料(纖維塊11、吸水性纖維(纖維12F))之流路的導管,一面使該轉筒沿其滾筒周方向繞旋轉軸旋轉,一面使隨著藉由自該轉筒之內部側之抽吸而於該流路中產生之空氣流(真空空氣)搬送之原材料堆積至該集聚用凹部。藉由該纖維堆積步驟而形成於集聚用凹部內之纖維堆積物為吸收性芯體40。
The
吸收體4之基重只要視其用途等適當調整即可。例如於吸收體4之用途為拋棄式尿布或經期衛生棉等吸收性物品之吸收體之情形時,吸收體4之基重較佳為100g/m2以上,更佳為200g/m2以上,且較佳為800g/m2以下,更佳為600g/m2以下。再者,如上所述,此處所示之吸收體4之基重可直接應用於吸收性芯體40。
The basis weight of the
以上,對本發明基於其實施形態進行了說明,但本發明可不限制於上述實施形態而適當變更。 As mentioned above, although this invention was demonstrated based on the embodiment, this invention is not limited to the said embodiment, It can change suitably.
例如於上述實施形態中,吸收體4包含吸收性芯體40及被覆其之包芯
片材41,但亦可不含包芯片材41。
For example, in the above-described embodiment, the
又,本發明之吸收性芯體亦可並非其中所含有之纖維塊(合成纖維集合體)之全部均為如纖維塊11之定形之纖維集合體,只要為不脫離本發明之主旨之範圍,則除該定形之纖維集合體以外,亦可進而含有極少量之不定形之纖維集合體。 In addition, not all the fiber blocks (synthetic fiber aggregates) contained in the absorptive core of the present invention may be fiber aggregates having a fixed shape such as the fiber blocks 11, as long as they are within the scope of not departing from the gist of the present invention. In addition to the fixed fiber aggregates, a very small amount of amorphous fiber aggregates may be further contained.
本發明之吸收性物品廣泛包括用於吸收自人體排出之體液(尿、軟便、經血、汗等)之物品,除上述經期衛生棉以外,亦包括經期短褲、具有固定帶之所謂展開型拋棄式尿布、短褲型拋棄式尿布、失禁護墊等。關於上述本發明之實施形態,進而揭示以下之附記。 The absorbent article of the present invention widely includes articles for absorbing body fluids (urine, soft stool, menstrual blood, sweat, etc.) discharged from the human body, and in addition to the above-mentioned menstrual sanitary napkins, also includes menstrual shorts, so-called unfolding type disposables with fixing belts Diapers, shorts-type disposable diapers, incontinence pads, etc. With regard to the above-described embodiments of the present invention, the following additional notes are further disclosed.
<1>一種吸收體,其係直接或間接接觸肌膚而使用,具有於使用時配置於相對接近使用者之肌膚之位置之肌膚對向面、及配置於相對遠離使用者之肌膚之位置之非肌膚對向面,含有包含合成纖維之纖維塊與吸水性纖維,且複數個該纖維塊彼此或該纖維塊與該吸水性纖維相互交絡者,且上述纖維塊相對於上述吸水性纖維之含有質量比係上述肌膚對向面側小於上述非肌膚對向面側。 <1> An absorber, which is used in direct or indirect contact with the skin, and has a skin-facing surface disposed at a position relatively close to the user's skin during use, and a non-contact surface disposed at a position relatively far from the user's skin The skin-opposite surface contains a fiber mass containing synthetic fibers and a water-absorbent fiber, and a plurality of the fiber mass or the fiber mass and the water-absorbent fiber are intertwined with each other, and the content of the fiber mass relative to the water-absorbent fiber. The ratio is smaller than the above-mentioned non-skin-opposing surface side.
<2>如上述<1>所記載之吸收體,其中上述纖維塊相對於上述吸水性纖維之含有質量比隨著自上述肌膚對向面側朝向上述非肌膚對向面側逐漸增加。 <2> The absorber according to the above <1>, wherein the mass ratio of the fiber mass relative to the water absorbent fiber gradually increases from the skin-opposing surface side toward the non-skin-opposing surface side.
<3>一種吸收體,其係直接或間接接觸肌膚而使用,具有於使用時配置於相對接近使用者之肌膚之位置之肌膚對向面、及配置於相對遠離使用者之肌膚之位置之非肌膚對向面,含有包含合成纖維之纖維塊與吸水性纖維,且複數個該纖維塊彼此或該纖維塊與該吸水性纖維相互交絡者,且該纖維塊之含有質量相對於上述纖維塊及上述吸水性纖維之合 計含有質量之比率係上述肌膚對向面側小於上述非肌膚對向面側(即,於上述非肌膚對向面側大於上述肌膚對向面側)。 <3> An absorber which is used in direct or indirect contact with the skin, and has a skin-facing surface disposed relatively close to the user's skin during use, and a non-contact surface disposed relatively far from the user's skin The face opposite to the skin contains fiber blocks comprising synthetic fibers and water-absorbing fibers, and a plurality of the fiber blocks or the fiber blocks and the water-absorbing fibers are intertwined with each other, and the content of the fiber blocks is relative to the above-mentioned fiber blocks and The combination of the above absorbent fibers The ratio in terms of mass content is that the above-mentioned skin-opposing surface side is smaller than the above-mentioned non-skin-opposing surface side (that is, the above-mentioned non-skin-opposing surface side is larger than the above-mentioned skin-opposing surface side).
<4>如上述<3>所記載之吸收體,其中該纖維塊之含有質量相對於上述纖維塊及上述吸水性纖維之合計含有質量之比率隨著自上述肌膚對向面側朝向上述非肌膚對向面側逐漸增加。 <4> The absorber according to the above <3>, wherein the ratio of the mass content of the fiber mass to the total mass content of the fiber mass and the water-absorbing fiber goes from the skin-opposing surface side toward the non-skin The opposite side gradually increases.
<5>如上述<1>至<4>中任一項所記載之吸收體,其中該纖維塊之含有質量相對於上述纖維塊及上述吸水性纖維之合計含有質量之比率於上述肌膚對向面側為0質量%以上且60質量%以下,於上述非肌膚對向面側為50質量%以上且100質量%以下,且兩者之差為15質量%以上。 <5> The absorber according to any one of the above <1> to <4>, wherein the ratio of the mass of the fiber mass to the total mass of the fiber mass and the water-absorbing fiber is opposite to the skin The surface side is 0 mass % or more and 60 mass % or less, and the non-skin opposing surface side is 50 mass % or more and 100 mass % or less, and the difference between the two is 15 mass % or more.
<6>如上述<5>所記載之吸收體,其中上述差為80質量%以上。 <6> The absorber as described in said <5> whose said difference is 80 mass % or more.
<7>如上述<1>至<6>中任一項所記載之吸收體,其中上述纖維塊具有由相對向之2個基本面及與兩基本面交叉之骨架面劃分形成之本體部。 <7> The absorber according to any one of the above <1> to <6>, wherein the fiber block has a main body portion divided by two opposing base planes and a skeleton plane intersecting the two base planes.
<8>如上述<7>所記載之吸收體,其中上述2個基本面之總面積大於上述骨架面之總面積。 <8> The absorber according to the above <7>, wherein the total area of the two basic planes is larger than the total area of the skeleton planes.
<9>如上述<7>或<8>所記載之吸收體,其中上述基本面於俯視下呈長方形狀,且該長方形狀之短邊與上述吸收體之厚度同等或較其短。 <9> The absorber according to the above <7> or <8>, wherein the base surface has a rectangular shape in plan view, and the short side of the rectangular shape is equal to or shorter than the thickness of the absorber.
<10>如上述<9>所記載之吸收體,其中上述基本面之短邊之長度為0.3mm以上,較佳為0.5mm以上,且為10mm以下,較佳為6mm以下。 <10> The absorber according to the above <9>, wherein the length of the short side of the basic surface is 0.3 mm or more, preferably 0.5 mm or more, and 10 mm or less, preferably 6 mm or less.
<11>如上述<9>或<10>所記載之吸收體,其中上述基本面之長邊之長度為0.3mm以上,較佳為2mm以上,且為30mm以下,較佳為15mm以下。 <11> The absorber according to the above <9> or <10>, wherein the length of the long side of the basic surface is 0.3 mm or more, preferably 2 mm or more, and 30 mm or less, preferably 15 mm or less.
<12>如上述<7>至<11>中任一項所記載之吸收體,其中存在於上述基本面及上述骨架面各者之纖維端部之每單位面積之數量係該骨架面多於該基本面。 <12> The absorber according to any one of the above <7> to <11>, wherein the number per unit area of the fiber ends present in each of the basic surface and the skeleton surface is greater than that of the skeleton surface the fundamentals.
<13>如上述<7>至<12>中任一項所記載之吸收體,其中存在於上述基本面之纖維端部之每單位面積之數量N1與存在於上述骨架面之纖維端部之每單位面積之數量N2之比率N1/N2為0以上且0.90以下,較佳為0.05以上且0.60以下。 <13> The absorber according to any one of the above <7> to <12>, wherein the number N 1 per unit area of the fiber ends present on the basic plane and the fiber ends present on the skeleton plane The ratio N 1 /N 2 of the number N 2 per unit area is 0 or more and 0.90 or less, preferably 0.05 or more and 0.60 or less.
<14>如上述<7>至<13>中任一項所記載之吸收體,其中存在於上述基本面之纖維端部之每單位面積之數量為0個以上且8個以下,較佳為3個以上且6個以下。 <14> The absorber according to any one of the above <7> to <13>, wherein the number per unit area of the fiber ends present in the basic plane is 0 or more and 8 or less, preferably 3 or more and 6 or less.
<15>如上述<7>至<14>中任一項所記載之吸收體,其中存在於上述骨架面之纖維端部之每單位面積之數量為5個以上且50個以下,較佳為8個以上且40個以下。 <15> The absorber according to any one of the above <7> to <14>, wherein the number per unit area of the fiber ends present on the skeleton surface is 5 or more and 50 or less, preferably 8 or more and 40 or less.
<16>如上述<7>至<15>中任一項所記載之吸收體,其中上述纖維塊具有延出纖維部,該延出纖維部包含自上述本體部向外側延出之纖維且纖維密度低於本體部。 <16> The absorber according to any one of the above <7> to <15>, wherein the fiber block has an extended fiber portion including fibers extending outward from the body portion and the fibers The density is lower than the body portion.
<17>如上述<16>所記載之吸收體,其中上述延出纖維部中之至少一者為包含自上述骨架面向外側延伸之複數個纖維之延出纖維束部。 <17> The absorber according to the above <16>, wherein at least one of the extending fiber portions is an extending fiber bundle portion including a plurality of fibers extending outward from the frame surface.
<18>如上述<1>至<17>中任一項所記載之吸收體,其中上述肌膚對向面側含有吸水性聚合物。 <18> The absorber according to any one of the above <1> to <17>, wherein the skin-facing surface side contains a water-absorbent polymer.
<19>如上述<1>至<18>中任一項所記載之吸收體,其中上述纖維塊與上述吸水性纖維之含有質量比以前者/後者計為20/80~80/20。 <19> The absorber according to any one of the above <1> to <18>, wherein the mass ratio of the fiber mass to the water-absorbent fiber is 20/80 to 80/20 in terms of the former/the latter.
<20>如上述<1>至<19>中任一項所記載之吸收體,其中上述纖 維塊中所含之合成纖維為非吸水性。 <20> The absorber according to any one of the above <1> to <19>, wherein the fiber The synthetic fibers contained in the dimensional block are non-absorbent.
<21>如上述<1>至<20>中任一項所記載之吸收體,其中上述吸水性纖維為纖維素系吸水性纖維。 <21> The absorber according to any one of the above <1> to <20>, wherein the water-absorbent fiber is a cellulose-based water-absorbent fiber.
<22>如上述<1>至<21>中任一項所記載之吸收體,其中上述纖維塊與水之接觸角未達90度,較佳為70度以下。 <22> The absorber according to any one of the above <1> to <21>, wherein the contact angle between the fiber mass and water is less than 90 degrees, preferably 70 degrees or less.
<23>如上述<22>所記載之吸收體,其中上述纖維塊係經親水化劑處理者。 <23> The absorber according to the above <22>, wherein the fiber mass is treated with a hydrophilizing agent.
<24>如上述<1>至<23>中任一項所記載之吸收體,其中上述吸收體包含吸收性芯體與包芯片材。 <24> The absorber according to any one of the above <1> to <23>, wherein the absorber includes an absorptive core and a core wrapping material.
<25>如上述<1>至<24>中任一項所記載之吸收體,其中上述纖維塊於上述吸收體中除藉由交絡而與其他纖維塊或上述吸水性纖維結合以外,亦以可與其他纖維塊或上述吸水性纖維進行交絡之狀態存在。 <25> The absorber according to any one of the above <1> to <24>, wherein in the absorber, the fiber block is not only bonded to other fiber blocks or the water-absorbing fibers by intertwining in the absorber, but also to It can exist in a state of being intertwined with other fiber blocks or the above-mentioned absorbent fibers.
<26>如上述<25>所記載之吸收體,其中上述藉由交絡而結合之纖維塊與上述可進行交絡之狀態之纖維塊之合計數相對於上述吸收體中之纖維塊之總數,較佳為占半數以上,更佳為占70%以上,進而較佳為占80%以上。 <26> The absorber according to the above <25>, wherein the total number of the fiber blocks bonded by the intertwining and the fiber blocks in the state capable of being intertwined is greater than the total number of the fiber blocks in the absorber. It is preferable to account for more than half, more preferably more than 70%, and still more preferably more than 80%.
<27>如上述<1>至<26>中任一項所記載之吸收體,其中具有與其他上述纖維塊或上述吸水性纖維之結合部的上述纖維塊之總數之較佳為70%以上、更佳為80%以上為藉由纖維之交絡而形成該結合部者。 <27> The absorber according to any one of the above <1> to <26>, wherein the total number of the fiber blocks having the bonding portion with the other fiber blocks or the water-absorbent fibers is preferably 70% or more , More preferably, 80% or more of the junction is formed by the intertwining of fibers.
<28>如上述<1>至<27>中任一項所記載之吸收體,其中上述纖維塊來自不織布。 <28> The absorber according to any one of the above <1> to <27>, wherein the fiber mass is derived from a nonwoven fabric.
<29>一種吸收性物品,其具備如上述<1>至<28>中任一項所記載之吸收體。 <29> An absorbent article comprising the absorber according to any one of the above <1> to <28>.
以下,藉由實施例更具體地說明本發明,但本發明並不限定於該實施例。 Hereinafter, the present invention will be described more specifically with reference to examples, but the present invention is not limited to these examples.
[實施例1] [Example 1]
製作基本構成與圖1所示之衛生棉1相同之經期衛生棉。
A menstrual sanitary napkin having the same basic structure as the
使用基重30g/m2之熱風不織布作為正面片材,使用基重37g/m2之聚乙烯樹脂膜(FL-KDJ100nN,大化工業製造)作為背面片材。吸收體係使用纖維塊及吸水性纖維作為吸收性芯體之纖維材料,進而使用另外準備之基重16g/m2之包含衛生紙之包芯片材,使用公知之纖維堆積裝置依照慣例進行製造。纖維塊之製造係依據圖6,將原料纖維片材切斷為小方塊狀而製造。實施例1之吸收體中之纖維材料(纖維塊、吸水性纖維)之配置係與圖3所示之吸收體4同樣地成為纖維塊佔有率、纖維塊比率隨著自該吸收體之肌膚對向面側朝向非肌膚對向面側而逐漸增加的配置。
A hot air non-woven fabric with a basis weight of 30 g/m 2 was used as the front sheet, and a polyethylene resin film (FL-KDJ100nN, manufactured by Daika Industry Co., Ltd.) with a basis weight of 37 g/m 2 was used as the back sheet. The absorbent system used fiber mass and absorbent fibers as the fiber material of the absorbent core, and then used a separately prepared core wrapping material containing toilet paper with a basis weight of 16 g/m 2 , and was conventionally manufactured using a known fiber stacking device. Manufacture of the fiber block was manufactured by cutting the raw fiber sheet into small squares according to FIG. 6 . The arrangement of the fiber materials (fiber blocks, water-absorbing fibers) in the absorber of Example 1 is the same as that of the
作為纖維塊之原料纖維片材,使用以將包含聚乙烯及聚對苯二甲酸乙二酯樹脂之非吸水性熱塑性纖維利用下述組合物A進行處理者(與水之接觸角68度)作為構成纖維之基重21g/m2之熱風不織布(具有構成纖維彼此之熱熔合部之纖維片材)。作為吸水性纖維,使用針葉樹漂白牛皮紙漿(NBKP)。吸收體所使用之纖維塊(定形之合成纖維集合體)具有如圖5(a)所示之長方體形狀之本體部,其基本面111之短邊111a為0.8mm,長邊111b為3.9mm,厚度T為0.6mm。又,基本面111之纖維端部之每單位面積之數量為3.2個/mm2,骨架面112之纖維端部之每單位面積之數量為19.2個/mm2。
As the raw fiber sheet of the fiber mass, a non-water-absorbent thermoplastic fiber containing polyethylene and polyethylene terephthalate resin treated with the following composition A (contact angle with water 68 degrees) was used as A hot-air nonwoven fabric with a basis weight of 21 g/m 2 constituting fibers (fiber sheet having thermally fused portions constituting fibers). As the water-absorbent fiber, conifer bleached kraft pulp (NBKP) was used. The fiber block (shaped synthetic fiber aggregate) used in the absorber has a main body portion in the shape of a cuboid as shown in FIG. The thickness T is 0.6 mm. Further, the number per unit area of the fiber ends of the
(組合物A之組成) (Composition of Composition A)
‧烷基磷酸酯鉀鹽(花王股份有限公司製造Gripper 4131之氫氧化鉀中和物):25質量% ‧Potassium Alkyl Phosphate (Potassium Hydroxide Neutralized by Kao Co., Ltd. Gripper 4131): 25% by mass
‧磺基丁二酸二烷基酯鈉鹽(花王股份有限公司製造Pelex OT-P):10質量% ‧Sodium salt of dialkyl sulfosuccinate (Pelex OT-P manufactured by Kao Co., Ltd.): 10% by mass
‧烷基(硬脂基)甜菜鹼(花王股份有限公司製造Amphitol 86B):15質量% ‧Alkyl (stearyl) betaine (Amphitol 86B manufactured by Kao Co., Ltd.): 15% by mass
‧聚氧乙烯(加成莫耳數:2)硬脂基醯胺(Kawaken Fine Chemicals製造Amisol SDE):30質量% ‧Polyoxyethylene (addition molar number: 2) stearylamide (Amisol SDE manufactured by Kawaken Fine Chemicals): 30% by mass
‧聚氧乙烯、聚氧丙烯改性聚矽氧(信越化學工業股份有限公司製造X-22-4515):20質量% ‧Polyoxyethylene, polyoxypropylene modified polysiloxane (X-22-4515 manufactured by Shin-Etsu Chemical Co., Ltd.): 20% by mass
[實施例2] [Example 2]
將吸收體中之纖維材料(纖維塊、吸水性纖維)之配置與圖4所示之吸收體4A同樣地設為於厚度方向上具有纖維塊佔有率、纖維塊比率互不相同之2個部位之配置,除此以外,藉由與實施例1相同之方式製作經期衛生棉,作為實施例2。即,實施例2之經期衛生棉中之吸收體係肌膚對向面側為富含吸水性纖維之部位12P,非肌膚對向面側為富含纖維塊之部位11P,又,兩部位12P、11P彼此於其等之界面藉由構成纖維彼此之交絡而相互結合,又,該界面位於該吸收體之厚度方向之中央。
The arrangement of the fiber material (fiber block, water-absorbing fiber) in the absorber is the same as that of the
[實施例3] [Example 3]
於實施例2中,將富含吸水性纖維之部位12P之纖維塊佔有率設為0質量%,即將吸收體之肌膚對向面側之吸水性纖維含量設為100質量%,且將富含纖維塊之部位11P之纖維塊佔有率設為100質量%,即將吸收體之非肌膚對向面側之吸水性纖維佔有量設為0質量%,除此以外,設為相同之
吸收體,製作實施例3之經期衛生棉。
In Example 2, the fiber mass occupancy rate of the
[實施例4] [Example 4]
於實施例3中,將纖維塊變更為基本面111之短邊111a為0.8mm、長邊111b為5.0mm、厚度為0.6mm者。於該變更後之纖維塊中,纖維端部之每單位面積之數量設為與實施例2相同。除以上方面以外,製作包含與實施例3相同之吸收體之經期衛生棉,設為實施例4。
In Example 3, the fiber block was changed to one whose
[比較例1] [Comparative Example 1]
將市售之經期衛生棉(Unicharm股份有限公司製造,商品名「Tanom Pew Slim 23cm」)之吸收體直接作為比較例1。比較例1之吸收體係混合有合成纖維與纖維素系纖維(吸水性纖維)者,不含纖維塊。 The absorber of a commercially available menstrual sanitary napkin (manufactured by Unicharm Co., Ltd., trade name "Tanom Pew Slim 23cm") was used as Comparative Example 1 as it was. In the absorption system of Comparative Example 1, a synthetic fiber and a cellulosic fiber (water-absorbing fiber) were mixed, and the fiber lump was not included.
[比較例2] [Comparative Example 2]
以專利文獻1為參考,將吸收體變更為下述者,除此以外,藉由與實施例1相同之方式製作經期衛生棉,設為比較例2。
A menstrual sanitary napkin was produced in the same manner as in Example 1, except that the absorber was changed to the following with reference to
比較例2中所使用之吸收體係使用不定形不織布片作為吸收性芯體中之纖維塊,且將吸收性芯體利用包芯片材被覆後實施熱風加工,使該吸收性芯體中所含之該不織布片彼此相互熱熔合,除此以外,與實施例1中所使用之吸收體相同。於對上述吸收體實施之熱風步驟中,將不織布片與紙漿纖維之混合集合體(長度210mm×寬度66mm)於溫度150℃之電乾燥機(例如Isuzu製作所股份有限公司製造)內靜置600秒,使不織布片彼此熱熔合。所使用之不定形不織布片係藉由將與實施例1及2中使用之熱風不織布相同者沿任意方向撕裂而製造,其俯視下之跨度長度大致為25mm左右。 The absorbent system used in Comparative Example 2 used an amorphous non-woven fabric sheet as a fiber block in the absorbent core, and the absorbent core was covered with a core wrap material and then hot-air processing was performed to make the absorbent core contained in the absorbent core. The non-woven fabric sheets were the same as the absorber used in Example 1 except that they were thermally fused to each other. In the hot air step performed on the above-mentioned absorber, the mixed aggregate (length 210mm×width 66mm) of the non-woven fabric sheet and pulp fiber was left for 600 seconds in an electric dryer (for example, manufactured by Isuzu Manufacturing Co., Ltd.) at a temperature of 150°C. , so that the non-woven fabric sheets are thermally fused to each other. The used unshaped non-woven fabric sheet was produced by tearing the same hot air non-woven fabric used in Examples 1 and 2 in any direction, and its span length in a plan view was about 25 mm.
[性能評價] [Performance evaluation]
針對各實施例及比較例之經期衛生棉,藉由下述方法,分別測定濕 潤狀態下之壓縮功(w-WC)、扭曲率、及表面擴散面積。再者,關於實施例4,藉由下述方法,亦分別測定乾燥狀態下之回覆功(d-WC')及乾燥狀態下之壓縮應變率(d-ΔT/T0)。將結果示於下述表1。 For the menstrual sanitary napkins of the respective Examples and Comparative Examples, the compression work (w-WC), twist rate, and surface diffusion area in a wet state were measured by the following methods, respectively. In addition, regarding Example 4, the recovery work (d-WC') in the dry state and the compressive strain rate (d-ΔT/T 0 ) in the dry state were also measured by the following methods, respectively. The results are shown in Table 1 below.
<壓縮功(WC)之測定方法> <Measurement method of compression work (WC)>
一般而言,已知試樣之壓縮功(WC)可以利用Kato Tech股份有限公司製造之KES(Kawabata Evaluation System)所獲得之測定值表示(參考文獻:質感評價之標準化與解析(第2版)、著者川端季雄、1980年7月10日發行)。具體而言,使用Kato Tech股份有限公司製造之自動化壓縮試驗裝置KES-G5測定壓縮功(WC)及壓縮回覆率(RC)。測定程序如下。 Generally speaking, the compression work (WC) of a known sample can be expressed by the measured value obtained by KES (Kawabata Evaluation System) manufactured by Kato Tech Co., Ltd. (Reference: Standardization and Analysis of Texture Evaluation (2nd Edition)) , Author Kawabata Yoshio, published July 10, 1980). Specifically, the compression work (WC) and the compression recovery ratio (RC) were measured using an automatic compression test apparatus KES-G5 manufactured by Kato Tech Co., Ltd. The measurement procedure is as follows.
將作為試樣之「具備吸收體之吸收性物品(經期衛生棉)」安裝於壓縮試驗裝置之試驗台。其次,將該試樣於具有面積2cm2之圓形平面之鋼板間進行壓縮。壓縮速度設為0.02cm/sec,壓縮最大荷重設為490mN/cm2。回覆過程亦以相同速度進行測定。壓縮功(WC)以下式表示,單位為「mN‧cm/cm2」。式中,Tm、T0及Pa分別表示490mN/cm2荷重時之厚度、4.9mN/cm2荷重時之厚度、及測定時(壓縮過程)之荷重(mN/cm2)。 The "absorbent article with an absorbent body (menstrual sanitary napkin)" as a sample was mounted on the test bench of the compression test apparatus. Next, the sample was compressed between steel plates having a circular plane with an area of 2 cm 2 . The compression speed was set to 0.02 cm/sec, and the maximum compression load was set to 490 mN/cm 2 . The reply process is also measured at the same speed. The compression work (WC) is represented by the following formula, and the unit is “mN·cm/cm 2 ”. In the formula, T m , T 0 and Pa represent the thickness under a load of 490 mN/cm 2 , the thickness under a load of 4.9 mN/cm 2 , and the load (mN/cm 2 ) during measurement (compression process).
如此算出之壓縮功為該試樣之濕潤狀態下之壓縮功(w-WC)。w-WC之值越大,判斷為緩衝性越高,評價變得越高。 The compression work thus calculated is the compression work (w-WC) in the wet state of the sample. As the value of w-WC is larger, it is judged that the cushioning property is higher and the evaluation is higher.
作為上述測定方法之測定對象的「具備濕潤狀態之吸收體之吸收性物品」係藉由以下方式調整。首先,將注入脫纖維馬血之前的吸收性物品於氣溫23℃、相對濕度50%RH之環境下放置24小時,調整乾燥 狀態之吸收性物品。將該乾燥狀態之吸收性物品以正面片材側(肌膚對向面側)成為上側之方式水平地放置,且於該正面片材上放置橢圓形注入口(長徑50mm、短徑23mm),自該注入口注入脫纖維馬血3.0g,靜置1分鐘後,進而注入脫纖維馬血3.0g,注入後保持該狀態1分鐘,獲得具備濕潤狀態之吸收體之吸收性物品。再者,注入至測定對象之脫纖維馬血與下述<表面擴散面積之測定方法>中製備者相同。 "The absorbent article provided with the absorber in a wet state" which is the measurement object of the said measurement method was adjusted by the following method. First, the absorbent article before being injected with defibrillated horse blood was placed for 24 hours in an environment with an air temperature of 23°C and a relative humidity of 50% RH, and adjusted for drying. state of absorbent articles. The absorbent article in the dry state was placed horizontally so that the surface sheet side (skin-opposing surface side) became the upper side, and an oval injection port (long diameter 50 mm, short diameter 23 mm) was placed on the front sheet, 3.0 g of defibrillated horse blood was injected through the injection port, and after standing for 1 minute, 3.0 g of defibrillated horse blood was injected, and the state was maintained for 1 minute after injection to obtain an absorbent article having an absorber in a wet state. In addition, the defibrillated horse blood injected into the measurement object was the same as that prepared in the following <Method for Measuring Surface Diffusion Area>.
<回覆功(WC')之測定方法> <Measurement method of response work (WC')>
試樣之回覆功(WC')可使用上述KES進行測定。具體而言,使用Kato Tech股份有限公司製造之自動化壓縮試驗裝置KES-G5測定回覆功(WC')。測定程序如下。 The recovery work (WC') of the sample can be measured using the above-mentioned KES. Specifically, the recovery work (WC') was measured using an automatic compression test apparatus KES-G5 manufactured by Kato Tech Co., Ltd. The measurement procedure is as follows.
將作為試樣之「具備吸收體之吸收性物品(經期衛生棉)」安裝於壓縮試驗裝置之試驗台。其次,將該試樣於具有面積2cm2之圓形平面之鋼板間進行壓縮。壓縮速度設為0.2cm/sec,壓縮最大荷重設為2450mN/cm2。回覆過程亦以相同速度進行測定。回覆功(WC')以下式表示,單位為「mN‧cm/cm2」。式中,Tm、T0及Pb分別表示2450mN/cm2荷重時之厚度、4.9mN/cm2荷重時之厚度、及測定時(回覆過程)之荷重(mN/cm2)。 The "absorbent article with an absorbent body (menstrual sanitary napkin)" as a sample was mounted on the test bench of the compression test apparatus. Next, the sample was compressed between steel plates having a circular plane with an area of 2 cm 2 . The compression speed was set to 0.2 cm/sec, and the maximum compression load was set to 2450 mN/cm 2 . The reply process is also measured at the same speed. The response work (WC') is expressed by the following formula, and the unit is "mN·cm/cm 2 ". In the formula, T m , T 0 and P b respectively represent the thickness under a load of 2450 mN/cm 2 , the thickness under a load of 4.9 mN/cm 2 , and the load (mN/cm 2 ) during measurement (recovery process).
再者,該回覆功(WC')不會顯示於KES-G5之測定結果畫面,顯示於該測定結果畫面者係由壓縮功(WC)與回覆功(WC')所算出之壓縮回覆率(RC)。於此種情形時,使用測定裝置中顯示之參數(WC、RC), 根據下式算出回覆功(WC')。 Furthermore, the response power (WC') will not be displayed on the measurement result screen of KES-G5, but displayed on the measurement result screen is the compression response rate ( RC). In this case, use the parameters (WC, RC) displayed in the measuring device, The reply work (WC') was calculated from the following formula.
[數式3] WC'=RC×WC÷100 [Equation 3] WC' = RC × WC ÷100
上述「乾燥狀態下之回覆功(d-WC')」係藉由使用「乾燥狀態之吸收性物品(經期衛生棉)」作為上述<回覆功(WC')之測定方法>中之試樣進行測定。該乾燥狀態之吸收性物品中所含之吸收體係未使用者且未吸收液體,為乾燥狀態。根據本發明者等人,d-WC'之值越大,判斷為吸收體之乾燥狀態下之壓縮回覆性越高,評價變得越高。 The above "recovery work in dry state (d-WC')" was carried out by using "absorbent article in dry state (menstrual sanitary napkin)" as the sample in the above <Measurement method of recovery work (WC')>. Determination. The absorbent system contained in the absorbent article in the dry state is not used and does not absorb liquid, and is in a dry state. According to the present inventors, the larger the value of d-WC' is, the higher the compression recovery property in the dry state of the absorber is judged to be, and the evaluation becomes higher.
<壓縮應變率(ΔT/T0)之測定方法> <Measurement method of compressive strain rate (ΔT/T 0 )>
試樣之壓縮應變率(ΔT/T0)可使用上述KES進行測定。具體而言,使用Kato Tech股份有限公司製造之自動化壓縮試驗裝置KES-G5測定壓縮應變率(ΔT/T0)。測定程序如下。 The compressive strain rate (ΔT/T 0 ) of the sample can be measured using the above-mentioned KES. Specifically, the compressive strain rate (ΔT/T 0 ) was measured using an automated compression test apparatus KES-G5 manufactured by Kato Tech Co., Ltd. The measurement procedure is as follows.
將作為試樣之「具備吸收體之吸收性物品(經期衛生棉)」安裝於壓縮試驗裝置之試驗台。其次,將該試樣於具有面積2cm2之圓形平面之鋼板間進行壓縮,並逐漸增大該壓縮時之荷重,測定該荷重成為特定之最大值(最大荷重)之時間點之測定對象物之厚度(壓縮厚度)Tm。注意測定對象物無皺褶或彎曲。壓縮試驗機之測定條件如下所述。 The "absorbent article with an absorbent body (menstrual sanitary napkin)" as a sample was mounted on the test bench of the compression test apparatus. Next, the sample is compressed between steel plates having a circular plane with an area of 2 cm 2 , and the load at the time of compression is gradually increased, and the measurement object is measured at the time point at which the load reaches a specific maximum value (maximum load). The thickness (compressed thickness) T m . Make sure that the measurement object is not wrinkled or bent. The measurement conditions of the compression tester are as follows.
‧壓縮速度:0.2mm/sec ‧Compression speed: 0.2mm/sec
‧最大荷重:2450mN/cm2 ‧Maximum load: 2450mN/cm 2
‧SENS:10 ‧SENS: 10
‧DEF:20 ‧DEF: 20
又,測定對象物之初期厚度(T0)設為上述荷重為103.9mN/cm2之時 間點之厚度。根據下式,算出壓縮應變率(%)。 In addition, the initial thickness (T 0 ) of the object to be measured was defined as the thickness at the time point when the above-mentioned load was 103.9 mN/cm 2 . The compressive strain rate (%) was calculated from the following formula.
壓縮應變率(ΔT/T0)={(T0-Tm)/T0)}×100 Compressive strain rate (ΔT/T 0 )={(T 0 -T m )/T 0 )}×100
上述「乾燥狀態下之壓縮應變率(d-ΔT/T0)」係藉由在上述<壓縮應變率(ΔT/T0)之測定方法>中使用「乾燥狀態之吸收性物品(經期衛生棉)」作為試樣而進行測定。該乾燥狀態之吸收性物品中所含之吸收體係未使用者且未吸收液體,為乾燥狀態。根據本發明者等人,d-ΔT/T0之值越大,判斷為吸收體於乾燥狀態下之柔軟性越高,評價變得越高。 The above "compressive strain rate in dry state (d-ΔT/T 0 )" is obtained by using "Dry absorbent articles (menstrual sanitary napkins ) ")" was measured as a sample. The absorbent system contained in the absorbent article in the dry state is not used and does not absorb liquid, and is in a dry state. According to the present inventors, as the value of d-ΔT/T 0 is larger, it is judged that the softness of the absorber in a dry state is higher, and the evaluation becomes higher.
上述d-WC'及d-ΔT/T0之測定條件分別設為KES-G5之一般條件之10倍速度。根據發明者等人,該測定條件可進一步體現出穿著者之步行、就座等動作。 The measurement conditions of the above-mentioned d-WC' and d-ΔT/T 0 were respectively set to 10 times the speed of the general conditions of KES-G5. According to the inventors and others, the measurement conditions can further reflect the actions of the wearer such as walking and sitting.
<扭曲率之測定方法> <Measurement method of twist ratio>
經期衛生棉之扭曲率係使用驅動式女性用下半身人體模型進行評價。首先,測定測定對象之衛生棉之中央寬度(衛生棉之縱向中央之橫向長度)(步行前之中央寬度),將該衛生棉貼附於短褲並穿著於女性用人體模型。其次,使人體模型以100步/分鐘之速度步行30分鐘,於該人體模型之步行中,於步行3分鐘後對穿著狀態之衛生棉以15秒注入1.5g脫纖維馬血,將該操作重複進行6次,將合計9g之脫纖維馬血注入至衛生棉。繼而,將衛生棉自短褲卸下,測定其中央寬度(步行後之中央寬度),由步行前之中央寬度與步行後之中央寬度,根據下式算出扭曲率(%)。扭曲率之數值越小,衛生棉越不易扭曲,評價變得越高。再者,注入至測定對象之脫纖維馬血與下述<表面擴散面積之測定方法>中製備者相同。 The twist rate of menstrual napkins was evaluated using a powered female lower body mannequin. First, the center width of the sanitary napkin (the horizontal length of the vertical center of the sanitary napkin) (the center width before walking) was measured, and the sanitary napkin was attached to shorts and worn on a female mannequin. Next, the mannequin was made to walk at a speed of 100 steps/min for 30 minutes. During the walking of the mannequin, 1.5 g of defibrillated horse blood was injected into the sanitary napkin in the wearing state for 15 seconds after walking for 3 minutes, and the operation was repeated. This was performed 6 times, and a total of 9 g of defibrillated horse blood was injected into the sanitary napkin. Next, the sanitary napkin was removed from the shorts, the center width (center width after walking) was measured, and the twist rate (%) was calculated from the center width before walking and the center width after walking according to the following formula. The smaller the numerical value of the twist rate, the less easily the sanitary napkin is twisted, and the higher the evaluation becomes. In addition, the defibrillated horse blood injected into the measurement object was the same as that prepared in the following <Method for Measuring Surface Diffusion Area>.
扭曲率=[{(步行前之中央寬度)-(步行後之中央寬度)}÷(步行前之 中央寬度)]×100 Twist rate=[{(central width before walking)-(central width after walking)}÷(central width before walking) Center width)]×100
<表面擴散面積之測定方法> <Measurement method of surface diffusion area>
於相對於水平面具有45°角度之斜面上,將測定對象(經期衛生棉)以其肌膚對向面朝向該斜面之方式固定,進行如下操作,即,歷時23秒對測定對象之肌膚對向面注入脫纖維馬血1.5g,且於放置3分鐘後,再次歷經相同時間對相同之注入部位注入相同量之脫纖維馬血。重複進行該脫纖維馬血之注入、放置操作6次,將合計9g之脫纖維馬血注入至測定對象。於注入操作完成後,測定測定對象之肌膚對向面之脫纖維馬血之擴散面積,設為該測定對象之表面擴散面積。 On an inclined surface having an angle of 45° with respect to the horizontal plane, the measurement object (menstrual sanitary napkin) was fixed with its skin-opposing surface facing the inclined surface, and the following operations were performed, that is, the skin-opposing surface of the measurement object was subjected to the following operations for 23 seconds. 1.5 g of defibrillated horse blood was injected, and after standing for 3 minutes, the same amount of defibrated horse blood was injected into the same injection site for the same time. This operation of injecting and leaving the defibrated horse blood was repeated 6 times, and a total of 9 g of the defibrated horse blood was injected into the measurement object. After the injection operation was completed, the diffusion area of the defibrillated horse blood on the skin-opposite surface of the measurement object was measured and set as the surface diffusion area of the measurement object.
參照圖8對上述<表面擴散面積之測定方法>進行補充,測定對象S(經期衛生棉)設為240mm×75mm之俯視四邊形形狀。用於測定之測定台100具有與水平面所成之角度θ為45°之斜面100a。將測定對象S以其肌膚對向面與斜面100a對向之方式載於斜面100a上,進而於該測定對象S上載置面積大於測定對象S之厚度3mm之壓克力板101。作為模擬血液注入至測定對象S之脫纖維馬血係使用B型黏度計(東機產業股份有限公司製造型號TVB-10M,測定條件:轉子No.19、30rpm、25℃、60秒)所測得之黏度成為8mPa‧s者。作為此種脫纖維馬血,例如可使用Nippon Bio-test Laboratories股份有限公司製造之脫纖維馬血,藉由視需要調整血球、血漿比率等,可將黏度調整為上述特定之範圍。測定對象S中之脫纖維馬血之注入位置設為測定對象S之肌膚對向面之中心部(圖8中箭頭所示之部分),且使用未圖示之微型管泵(東京理化器械股份有限公司製造)注入。於該泵連結未圖示之管,該管之與該泵之連結側之相反側之端部連
結於斜面100a上之測定對象S,脫纖維馬血通過該管注入至測定對象S。測定對象S之肌膚對向面之脫纖維馬血之擴散面積可藉由如下方式測定,即,於OHP片材上描繪測定對象S之脫纖維馬血之分佈區域,使用圖像解析軟體NexusNewQube(Nexus公司製造)依照慣例對該OHP片材進行處理。
Referring to FIG. 8 to supplement the above-mentioned <Method for Measuring Surface Diffusion Area>, the measurement object S (menstrual sanitary napkin) was set to have a quadrilateral shape in plan view of 240 mm×75 mm. The measurement table 100 used for measurement has an
如表1所示,各實施例因複數個纖維塊彼此或纖維塊與吸水性纖維相互交絡,且關於纖維塊佔有率,「非肌膚對向面側>肌膚對向面側」之大小關係成立,故而與不滿足該等之比較例1及2相比,濕潤狀態下之壓縮功w-WC之值較大,因此緩衝性優異,又,扭曲率較小,因此不易扭曲,進而因該大小關係而使液體引入性優異。尤其,由各實施例與比較例2之對比可知,為了獲得於濕潤狀態下壓縮功亦較大而緩衝性優異之 吸收體,有效的是將纖維塊設為定形且使纖維塊彼此藉由交絡而結合。 As shown in Table 1, in each example, a plurality of fiber blocks or fiber blocks and water-absorbing fibers are intertwined, and the relationship between the size of the fiber block occupancy rate "non-skin-opposing surface side>skin-opposing surface side" is established. , therefore, compared with Comparative Examples 1 and 2 that do not satisfy these requirements, the value of the compression work w-WC in the wet state is larger, so the cushioning property is excellent, and the twist rate is smaller, so it is not easy to twist, and because of the size Therefore, the liquid introduction property is excellent. In particular, from the comparison of each Example and Comparative Example 2, it can be seen that in order to obtain a product that has a large compression work and excellent cushioning properties even in a wet state. In the absorber, it is effective to set the fiber blocks in a fixed shape and to bind the fiber blocks to each other by intertwining.
本發明之吸收體之緩衝性較高而不易扭曲,液體引入性優異,於應用於吸收性物品之情形時可提昇穿著感。 The absorber of the present invention has high cushioning properties and is not easy to be twisted, and has excellent liquid introduction properties, and can improve wearing feeling when applied to absorbent articles.
又,本發明之吸收性物品由於具備該高品質之吸收體,故而穿著感及防漏性優異。 Moreover, since the absorbent article of this invention is provided with this high-quality absorber, it is excellent in wearing feeling and leak-proofness.
1:經期衛生棉 1: Menstrual pads
2:正面片材 2: front sheet
3:背面片材 3: back sheet
4:吸收體 4: Absorber
5:吸收性本體 5: Absorbent body
6:側部片材 6: Side Sheets
11:纖維塊 11: Fiber Blocks
11F:纖維 11F: Fiber
12F:纖維 12F: Fiber
13:吸水性聚合物 13: Water Absorbent Polymer
40:吸收性芯體 40: Absorbent core
41:包芯片材 41: Chip material
Y:橫向 Y: horizontal
Claims (28)
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JP2018-207605 | 2018-11-02 |
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CN112587312A (en) * | 2020-12-03 | 2021-04-02 | 浙江好时加卫生用品有限公司 | Medical sanitary protection pad for wormwood |
Citations (2)
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TW200608942A (en) * | 2004-03-23 | 2006-03-16 | Kao Corp | Absorbent article |
WO2017079586A1 (en) * | 2015-11-04 | 2017-05-11 | The Procter & Gamble Company | Absorbent structure |
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US4813948A (en) * | 1987-09-01 | 1989-03-21 | Minnesota Mining And Manufacturing Company | Microwebs and nonwoven materials containing microwebs |
JP3916205B2 (en) | 2001-04-06 | 2007-05-16 | ユニ・チャーム株式会社 | Absorbent article, absorbent body for absorbent article, and method for producing the same |
JP4855606B2 (en) | 2001-08-10 | 2012-01-18 | ユニ・チャーム株式会社 | Absorbent articles |
JP4508889B2 (en) * | 2004-01-27 | 2010-07-21 | 花王株式会社 | Absorbent articles |
CN101180023B (en) * | 2005-03-23 | 2011-01-12 | 花王株式会社 | Absorbent article |
JP4822864B2 (en) * | 2006-02-09 | 2011-11-24 | 花王株式会社 | Water-absorbing composite and absorbent article using the same |
CN101404970B (en) * | 2006-03-23 | 2012-12-12 | 花王株式会社 | Absorbent article and process for production thereof |
RU2527405C1 (en) * | 2010-07-15 | 2014-08-27 | Дзе Проктер Энд Гэмбл Компани | Absorbent core |
JP6404259B2 (en) * | 2016-05-13 | 2018-10-10 | ユニ・チャーム株式会社 | Absorbent articles |
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