CN107148259A - Absorbent commodity - Google Patents

Absorbent commodity Download PDF

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Publication number
CN107148259A
CN107148259A CN201580057954.9A CN201580057954A CN107148259A CN 107148259 A CN107148259 A CN 107148259A CN 201580057954 A CN201580057954 A CN 201580057954A CN 107148259 A CN107148259 A CN 107148259A
Authority
CN
China
Prior art keywords
absorbent core
longitudinal
absorbent
central portion
lower floor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201580057954.9A
Other languages
Chinese (zh)
Other versions
CN107148259B (en
Inventor
南冈政宏
加藤隆弘
宫村猛史
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kao Corp
Original Assignee
Kao Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kao Corp filed Critical Kao Corp
Publication of CN107148259A publication Critical patent/CN107148259A/en
Application granted granted Critical
Publication of CN107148259B publication Critical patent/CN107148259B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/45Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
    • A61F13/49Absorbent articles specially adapted to be worn around the waist, e.g. diapers
    • A61F13/494Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/53Absorbent 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

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  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Absorbent Articles And Supports Therefor (AREA)

Abstract

It is formed with lower floor's absorbent core (231) in longitudinal direction (X) narrow central portion (5) extended and a pair of narrow side opening portions (6,6).When overlooking, upper strata absorbent core (230) and central portion (5) are overlapping, and total length of the central portion (5) in the longitudinal direction (X) of upper strata absorbent core (230) extends.Absorbent core (230) on upper strata, when overlooking in the region overlapping with the central portion (5) of lower floor's absorbent core (231), the upper strata absorbent core (230) of insertion in a thickness direction and the opening portion extended at longitudinal direction (X) are not formed.The relative surface side of skin in the left and right sides portion of absorbent core (23) is provided with a pair of three-dimensional gauffers (24,24).Expansion and elongation state nutation apparent time in absorbent commodity (1), three-dimensional gauffer formation are overlapping with absorbent core (23) with elastomeric element (26).

Description

Absorbent commodity
Technical field
The present invention relates to the absorbent commodities such as disposable diaper.
Background technology
It is used as the absorbent commodities such as disposable diaper, it is known that following structure:Absorbent core with liquid retainability, has Configure wearer veutro veutro portion and configure in the drosal part of dorsal part and positioned at the crotch between them, and with from The veutro portion extends to the longitudinal direction of the drosal part and the transverse direction orthogonal with longitudinal direction via the crotch.In addition, being used as absorbent commodity Absorber, general is using include paper, non-woven fabrics etc. clad sheet coat absorbent core obtained by structure, above-mentioned absorbability Core includes having the fiber assemblies of fibrous material such as solution fiber paper pulp or maintains the work(such as water absorbent polymer in fiber assembly Energy property material etc..In addition, improving conformability, anti-leakage to improve the morphotropism of absorber, propose various in absorbent core The technology for the opening portion that absorbent core formation material is not present is set.Following content has for example been recorded in patent document 1:In tool Have in the disposable diaper of absorbent core of monolayer constructions, extend in the vertical in the lateral center portion formation of the absorbent core Central portion, and the side opening portion extended in the vertical is formed in the two horizontal outsides of the central portion.According to Patent document 1, by being formed in the plurality of opening portion of absorbent core, when disposable diaper is worn, absorbent core is on edge W shape is deformed into horizontal sectional view, conformability is improved.
In addition, in patent document 2 and 3, recording following content:With two layers of construction including the upper and lower In the disposable diaper of absorbent core, multiple above-mentioned opening portions are formed in the absorbent core.Described in patent document 2 once Property diaper in, two layers of absorbent core construction part (high grammes per square metre portion) are configured with the lateral center portion of diaper, with the vertical The mode of extension forms the overall central portion in this two layers construction part of insertion in a thickness direction (center bending guide portion), And in the monolayer constructions part (low grammes per square metre portion) for only including lower floor in the two horizontal outsides of the central portion, with longitudinal direction The mode of upper extension forms side opening portion (sidepiece bending guide portion).On the other hand, disposable described in patent document 3 In diaper, in the same manner as the disposable diaper described in patent document 2, it is formed with central portion in absorbent core and side is opened Oral area, in patent document 2, central portion is not made only in lower floor, is also formed in upper strata, unlike this, in patent document 3 In, central portion is made only in lower floor and is not formed in upper strata.In addition, in the disposable diaper described in patent document 3, Central portion compared with upper strata longitudinal direction length it is shorter, central portion not throughout upper strata longitudinal direction, endlong extend.
Prior art literature
Patent document
Patent document 1:Japanese Patent Laid-Open 2011-177310 publications
Patent document 2:Japanese Patent Laid-Open 2012-16435 publications
Patent document 3:Japanese Patent Laid-Open 2013-13524 publications
The content of the invention
The present invention relates to a kind of absorbent commodity, the absorbent commodity has the absorbent core of liquid retainability, with Put the veutro of wearer veutro portion, configure in the drosal part of dorsal part and positioned at the crotch between them, and with from this Veutro portion extends to the longitudinal direction of the drosal part and the transverse direction orthogonal with longitudinal direction via the crotch.Above-mentioned absorbent core is included with upper Two layer construction of the non-skin with respect to lower floor's absorbent core of surface side of layer absorbent core and configuration in the upper strata absorbent core.Upper State the lateral center portion of lower floor's absorbent core, in a thickness direction the narrow central portion of insertion lower floor's absorbent core with Formed in the mode of Longitudinal extending, also, in horizontal two outside of the central portion, in a thickness direction the insertion lower floor A pair of narrow side opening portions of absorbent core are asymmetrically formed in Longitudinal extending and on the basis of the central portion.Bowing The above-mentioned upper strata absorbent core of apparent time and above-mentioned central portion are overlapping, and the central portion is throughout the upper strata absorbent core The endlong extension of longitudinal direction.In above-mentioned upper strata absorbent core, the above-mentioned center when overlooking with above-mentioned lower floor's absorbent core is opened The overlapping region of oral area, does not form the upper strata absorbent core of insertion in a thickness direction and in the opening portion of Longitudinal extending. The skin in the left and right sides portion along longitudinal direction of above-mentioned absorbent core is provided with when wearing to the skin side of wearer with respect to surface side Erect a pair three-dimensional gauffers, the three-dimensional gauffer with respect to surface side in the skin of the absorbent core to have base end part and in wearer Skin side form the mode of free end and erect, in the free end, three-dimensional gauffer formation is with elastomeric element in the vertical to extend State is configured.Expansion and elongation state nutation apparent time in above-mentioned absorbent commodity, above-mentioned three-dimensional gauffer formation elastomeric element It is overlapping with above-mentioned absorbent core.
Brief description of the drawings
Fig. 1 is the Breeches type disposable diaper for the embodiment for schematically showing the absorbent commodity as the present invention Stereogram.
Fig. 2 be schematically show the diaper shown in Fig. 1 expansion and elongation state under skin with respect to surface side (inner surface Side) expansion top view.
Fig. 3 be schematically show the diaper shown in Fig. 1 expansion and elongation state under non-skin with respect to surface side (appearance Surface side) expansion top view.
Fig. 4 is the cross-sectional view in the I-I sections for schematically showing Fig. 2.
Fig. 5 is the exploded perspective view that the diaper shown in Fig. 1 is decomposed and schematically shown.
Fig. 6 is a part (abdomen of the outer-skin sheet of the retractility for the exterior body for schematically showing the diaper shown in pie graph 1 Side outer-skin sheet) the local severing stereogram of one.
Fig. 7 is the amplification amplified the skin of the absorbent core of the diaper shown in Fig. 1 with respect to surface side and schematically shown Top view.
Fig. 8 is the cross-sectional view of the situation of the absorbent main body for the wearing effect for schematically showing the diaper shown in Fig. 1.
Fig. 9 (a) and Fig. 9 (b) are the skin opposite faces for respectively schematically representing the absorbent core used in comparative example The top view of side.
Embodiment
Disposable diaper described in patent document 1~3 is configured to by forming multiple openings in absorbent core Portion is bent, therefore when being compressed in dress by two huckles of wearer to laterally inboard, diaper overall deformation, thus, it is possible to Embody higher wearing feeling and anti-leakage.But, what the shape after the easiness and deformation with regard to the deformation of absorbent core was maintained For aspect, the disposable urine described in patent document 1~3 is furnished with room for improvement.
Therefore, the present invention relates to the excellent absorbent commodity of a kind of wearing feeling and anti-leakage.
Hereinafter, the present invention is preferred embodiment described with reference to the accompanying drawings based on it.Recorded in Fig. 1~Fig. 5 It is used as the Breeches type disposable diaper 1 of an embodiment of the absorbent commodity of the present invention.Diaper 1, which has, to be absorbed and keeps excretion The absorbent core 23 of the liquid retainability of the body fluid such as the urine gone out, and with the veutro portion 1A, configuration configured in the veutro of wearer Dorsal part drosal part 1C and positioned between them and configure wearer's crotch part crotch 1B, and with longitudinal direction X and with Horizontal Y orthogonal longitudinal X.Longitudinal X of diaper 1 is the direction extended between veutro portion 1A and drosal part 1C via crotch 1B.
It is further illustrated, diaper 1 has:Absorbent main body 2, it has absorbent core 23;With exterior body 3, it is matched somebody with somebody The non-skin in the absorbent main body 2 is put with respect to surface side, the absorbent main body 2 is fixed, predecessor portion F and rear body section R is respective It is engaged with each other along longitudinal X of the exterior body 3 both sides edge FS, RS, forms a pair of side seal portion S, S and the waist for wearer leads to The waist opening portion WH crossed and a pair of leg opening parts LH, LH supplying the lower limb of wearer to pass through.
As shown in Figures 2 and 3, predecessor portion F covers the body of wearer when wearing on the basis of vertical center line (not shown) The part of the front side (veutro) of body, the vertical center line is extended so that diaper 1 is divided into two-part mode on longitudinal X in horizontal Y, Rear body section R is the part for the rear side (dorsal part) for covering the body of wearer.In addition, in this manual, skin opposite face is urine It is (close to wear towards the face of the skin side of wearer in wearing effect in cloth 1 and its component parts (such as absorbent main body 2) The side of the skin of person), non-skin opposite face be in diaper 1 and its component parts wearing effect towards wearer skin The face of the opposite side of side (comparatively than side of the skin opposite face away from skin).
Diaper 1 have configured under wearing effect the veutro of wearer veutro portion 1A, configuration dorsal part drosal part 1C and positioned between them and configure wearer's crotch part crotch 1B.Longitudinal X of diaper 1 is in predecessor portion F and rear body section R Between the direction that extends, i.e. the direction extended between veutro portion 1A and drosal part 1C via crotch 1B, with absorbent main body 2 Length direction it is consistent.Veutro portion 1A is a predecessor portion F part, and drosal part 1C is a rear body section R part, and crotch 1B is across preceding Exist body portion F and rear body section R.Veutro portion 1A and drosal part 1C are to be located at the position same with side seal portion S-phase on longitudinal X Part, and be waist portion of the configuration at the waist of wearer when wearing diaper 1.Crotch 1B is in longitudinal X along exterior body 3 Both sides edge be formed with leg opening part LH, LH formation depressed part (leg edge LS, LS) region.Crotch 1B has When wearing diaper 1 and wearer excretory portion relative configuration excretory portion counterpart, the excretory portion counterpart is usually located at urine Longitudinal X of cloth 1 central portion (on the above-mentioned vertical center line of diaper 1) or its near.
Absorbent main body 2 as shown in contour line in Fig. 2 and Fig. 3 have overlook rectangular shape, its length direction with expansion and Longitudinal X of the diaper 1 of elongation state is consistent, and the absorbent main body 2 configures the central portion in the horizontal Y of exterior body 3, by viscous Connect agent and be engaged in exterior body 3.Exterior body 3 is formed as the outer of the expansion of the diaper 1 shown in Fig. 2 and Fig. 3 and the diaper 1 of elongation state Shape, the periphery of exterior body 3 forms the contour line of the diaper 1 of the state." expansion and the elongation state " of diaper 1 refers to following shape State:Diaper 1 is cut off in side seal portion S and deployed condition is become, the elastomeric element of each several part is extended, by the deployed condition Diaper 1 extend to as design size (with completely exclude elastomeric element influence in the state of plane expansion when chi It is very little identical).
As shown in figure 4, absorbent main body 2 has:Form the positive dough sheet 21 of the liquid permeability of skin opposite face;Formed non- The back sheet 22 of the difficult permeability of the liquid impermeability of skin opposite face, liquid or water-repellancy;And between two pieces 21,22 The absorbent core 23 (upper strata absorbent core 230 and lower floor's absorbent core 231) of liquid retainability, these pieces pass through the public affairs such as bonding agent The engagement means known integrally are constituted.Absorbent core 23 is located at the horizontal Y of diaper 1 (exterior body 3) central portion.Absorbent core 23 surface is coated by clad sheet 232.The liquid permeability such as paper, various non-woven fabrics, apertured film such as including cotton paper of clad sheet 232 Piece, integratedly coats upper strata absorbent core 230 and lower floor's absorbent core 231.It is used as positive dough sheet 21, back sheet 22 and absorbent core 23, can be respectively with no particular limitation using various parts in the prior art for such a absorbent commodity.For example, as just Dough sheet 21, can use various non-woven fabrics or apertured film etc., as back sheet 22, can use resin film or resin film and nothing Spin layered product of cloth etc. etc..As the formation material of absorbent core 23 (upper strata absorbent core 230 and lower floor's absorbent core 231), More than a kind of the fibrous material such as water-absorbing polymeric particles and paper pulp fiber can be used.
As shown in Figure 2 and Figure 4, the relative surface side of skin in the left and right sides portion along longitudinal X of absorbent core 23, is provided with A pair of the three-dimensional gauffers 24,24 erected when wearing to the skin side of wearer.Each three-dimensional gauffer 24 is with absorbent core 23 Skin has base end part 27 with respect to surface side and erected in the mode that the skin side of wearer forms free end 28, in the free end 28 1 or many (in the present embodiment for many) three-dimensional gauffer formation elastomeric element is configured with elongation state in longitudinal X 26.In the present embodiment, a pair of three-dimensional gauffers 24,24 linearly extend throughout longitudinal X of absorbent main body 2 total length, When wearing diaper 1, at least erected in crotch 1B to the skin side of wearer.The base end part 27 of three-dimensional gauffer 24 is in such as Fig. 2 institutes The endlong linear of longitudinal X in the top view shown throughout absorbent main body 2 extends, and the skin positioned at absorbent core 23 is relative On face.In addition, Fig. 4 represents the cross section for inside contracting portion (longitudinal X central portion) place of absorbent core 23, in Fig. 4, three-dimensional gauffer 24 base end part 27 is inside contracted on the spatial portion near portion positioned at this, without positioned at exist absorbent core formation material part (under Layer absorbent core 231) on, but the rear ends of longitudinal X in the absorbent core 23 without the portion that inside contracts, under base end part 27 is located at On layer absorbent core 231, base end part 27 is integrally located on the skin opposite face of absorbent core 23.
In the expansion of diaper 1 as shown in Figure 2 and the top view of elongation state, three-dimensional gauffer formation elastomeric element 26 It is overlapping with absorbent core 23.That is, elastomeric element 26 (being at least 1 elastomeric element 26 when there is many elastomeric elements 26) is vertical To at least a portion for the skin opposite face for passing through absorbent core 23.
As shown in figure 4, three-dimensional gauffer 24 includes liquid repellence or the three-dimensional gauffer formation of water-repellancy uses sheet material 25 and solid Due to the three-dimensional gauffer formation elastomeric element 26 of sheet material 25.Sheet material 25 is formed by 1 banding piece, and the one of the horizontal Y of sheet material 25 End configuration between absorbent core 23 (clad sheet 232) and back sheet 22 and is fixed to form fixing end by bonding agent, The horizontal Y of sheet material 25 the other end is in the top of the positive dough sheet 21 of the skin opposite face of cladding absorbent core 23, using along vertical Bending line (not shown) inflection extended to X forms free end 28 to horizontal Y inner side, the elastomeric element 26 of wire or banding To be fixed in longitudinal X states extended via bonding agent by the inflection between relative piece, so as to form three-dimensional gauffer 24. Three-dimensional gauffer 24 is shunk by the elastomeric element 26 configured with elongation state and erected under the wearing effect of diaper 1, prevents liquid Body flows out to side.As three-dimensional gauffer formation sheet material 25, can use the film of retractility, non-woven fabrics, fabric or they Laminates etc..
On exterior body 3, as shown in Figures 2 and 3, inside circular arc is bent in crotch 1B along its longitudinal X both side edges Shape and form a pair of legs edge LS, LS, in vertical view as shown in Figures 2 and 3, longitudinal X middle section has to horizontal Y Inner side shrinking hourglass-shaped shape.The transverse direction Y length most short position in crotch 1B has exterior body 3.Close an exterior Body 3, portion of predecessor F (veutro portion 1A) both sides edge FS, FS and rear body section R (drosal part 1C) along longitudinal X along the two of longitudinal X Side edge part RS, RS are engaged with each other by engagement means known to bonding agent, heat sealing, ultrasonic sealing function etc., by the engagement, such as Shown in Fig. 1, in diaper 1 formation a pair of side seal portions S, S, and then waist opening portion WH and a pair of leg opening parts LH, LH are formed.
As shown in Figure 4 and Figure 5, exterior body 3 includes the layered product of outer-skin sheet 31 and inner layer piece 32 and constituted.In diaper 1 Under wearing effect, outer-skin sheet 31 is located remotely from the side of the body of wearer, forms the non-skin opposite face (appearance of diaper 1 Face), inner layer piece 32 is located at the side of the body close to wearer, forms the skin opposite face (inner surface) of diaper 1.Outer-skin sheet 31 Engaged between inner layer piece 32 at defined position by bonding agent.
In the present embodiment, as shown in figure 5, inner layer piece 32 is made up of 1 continuous piece, unlike this, outer-skin sheet 31 Combine multiple and constitute, include constituting veutro portion 1A veutro outer-skin sheet 31A, constitute drosal part 1C dorsal part outer-skin sheet 31C And crotch 1B crotch outer-skin sheet 31B is constituted between two panels 31A, 31C.On constitute each 31A of outer-skin sheet 31,31B, 31C, their longitudinal X end is overlapped each other, and bonding agent, heat sealing, high frequency sealing, ultrasonic wave are passed through in the overlapping part Engagement means known to sealing etc. are engaged with each other and integrated.In piece 31A, 31C and piece 31B lap, positioned at longitudinal X's The piece 31B in center is located at comparatively close to the side of absorbent main body 2, and the non-skin at piece 31B longitudinal X both ends is relative Face is coated by piece 31A, 31C.
As shown in Figure 2 and Figure 5, veutro outer-skin sheet 31A have from longitudinal X of the veutro portion 1A sides of inner layer piece 32 end to The veutro extension 31AE of outside extension, in addition, dorsal part outer-skin sheet 31C has longitudinal X from the drosal part 1C sides of inner layer piece 32 End the dorsal part extension 31CE, two extension 31AE, 31CE that extend laterally be fixed on inner layer piece respectively to cover configuration The mode at longitudinal X of the absorbent main body 2 on 32 both ends, inflection to the side of inner layer piece 32 is fixed on and two by bonding agent Other component parts (inner layer piece 32, absorbent main body 2, three-dimensional gauffer 24) of extension 31AE, 31CE relative diaper 1.
In the present embodiment, constitute the veutro outer-skin sheet 31A and dorsal part outer-skin sheet 31C of outer-skin sheet 31 has in horizontal Y Retractility, unlike this, the other parts (crotch outer-skin sheet 31B) and inner layer piece 32 of outer-skin sheet 31 right and wrong without retractility Retractility.Therefore, in exterior body 3, including piece 31A, 31C region have retractility in horizontal Y, not including piece 31A, 31C region does not have retractility in horizontal Y.In the present embodiment, predecessor portion F waist portion is that veutro portion 1A includes veutro Outer-skin sheet 31A, rear body section R waist portion are that drosal part 1C includes dorsal part outer-skin sheet 31C, therefore veutro portion 1A and drosal part 1C are equal There is retractility in horizontal Y.In addition, in the present embodiment, veutro outer-skin sheet 31A crosses veutro portion 1A and crotch 1B friendship Boundary, i.e. pass through predecessor portion F in a pair of the side seal portions respective lower end of S, S (end of longitudinal X inner side) and horizontal Y extend Imaginary line and extend to crotch 1B, dorsal part outer-skin sheet 3C crosses drosal part 1C and crotch 1B boundary, i.e. by rear body section R A pair of the side seal portions respective lower end of S, S (end of longitudinal X inner side) and horizontal Y extend imaginary line and extend to crotch Veutro portion 1A is depended in part, the i.e. crotch 1B of these extensions for including two pieces 31A, 31C in portion 1B, therefore crotch 1B Also there is retractility in horizontal Y respectively with drosal part 1C part.On the other hand, veutro portion 1A and drosal part are leaned in crotch 1B Part (crotch 1B longitudinal X central portion) beyond 1C part does not have retractility in horizontal Y.
Veutro outer-skin sheet 31A and dorsal part outer-skin sheet 31C at least have retractility in horizontal Y.The abdomen of retractility is represented in Fig. 6 One of side outer-skin sheet 31A.Veutro outer-skin sheet 31A shown in Fig. 6 has in the tensile fibre based on non-elastic fiber The one side of dimension layer is bonded to the structure of the elastic yarn of wire, therefore including being used as 2 fibre plates 41,42 of the fibrous layer and conduct The elastomeric element 43 of the elastic yarn between two pieces 41,42.The dorsal part outer-skin sheet 31A of retractility with the structure is for example It can be manufactured according to the method described in Japanese Patent Laid-Open 2009-61743 publications.The dorsal part outer-skin sheet 31C of retractility It can be constituted in the same manner as the veutro outer-skin sheet 31A of the retractility shown in Fig. 6.
Constituting veutro outer-skin sheet 31A 2 pieces 41,42 can extend.Piece 41,42 can extend with elastomeric element 43 Direction (horizontal Y) identical side protrude upward.It is so-called to extend including following situation:(a) the composition fiber of piece 41,42 from Body extends;Although (b) constitute fiber itself do not extend, point of intersection combine fiber separate each other or by fiber each other Combination etc. and the D structure that is formed by plurality of fibers constructively changes or constituted fiber and is shredded, and cause piece 41st, 42 overall elongated.
The elastomeric element 43 for constituting veutro outer-skin sheet 31A is that elastic resin extends and formed in the state of melting or softening Elastic yarn.Many elastomeric elements 43 respectively throughout piece 31A total length (the horizontal Y of exterior body 3 total length) it is substantially continuous. Many elastomeric elements 43 are arranged in the way of not intersecting each other and extending on a direction (horizontal X).Elastomeric element 43 is with essence On not elongation state be engaged in 2 pieces 41,42.Being engaged through of elastomeric element 43 in piece 31A and piece 41,42 constitute piece 41, 42 fiber (non-elastic fiber) is carried out with being embedded to the state in elastomeric element 43 with the welding of elastomeric element 43, is not to make Carried out with bonding agents such as hot melt adhesives.Therefore, in (the tensile fiber based on non-elastic fiber of piece 41,42 Layer) and be engaged between the elastomeric element 43 of piece 41,42 in the absence of bonding agent.
Veutro outer-skin sheet 31A can stretch on direction (horizontal Y) the identical direction extended with elastomeric element 43.Piece 31A retractility is embodied because of the elasticity of elastomeric element 43.When by piece 31A identical with the direction that elastomeric element 43 extends Side when being pulled up, elastomeric element 43 and piece 41,42 extend.When piece 31A stretching is discharged, elastomeric element 43 shrinks, With the contraction of the elastomeric element 43, piece 41,42 recovers the state to before stretching.In addition, in piece 31A, due in the absence of with Elastomeric element 43 with other elastomeric elements of orthogonal combinations of states, therefore by piece 31A in the side extended with elastomeric element 43 When being stretched to (horizontal Y) identical direction, the i.e. so-called shrinkage in width of contraction in horizontal Y hardly occurs for piece 31A Elongation.
2 pieces 41,42 for constituting veutro outer-skin sheet 31A can be respectively the non-woven fabrics of chopped fiber., can as non-woven fabrics Enumerate hot-wind nonwoven cloth, hot-rolling non-woven fabrics, spunlace non-woven cloth, spun-bonded non-woven fabrics, melt spraying non-woven fabrics etc..Piece 41 may be either with piece 42 Piece of the same race, or piece not of the same race." piece of the same race " mentioned herein refers to the manufacturing process of piece, the composition fiber of piece Species, constitute the whole identical pieces of fibre diameter and length, the thickness of piece and grammes per square metre etc. of fiber.In these contents at least It is when one is different " piece not of the same race ".
The elastomeric element 43 (elastic yarn) for constituting veutro outer-skin sheet 31A is original such as with thermoplastic elastomer (TPE) or rubber Material.Especially, when thermoplastic elastomer (TPE) is used as into raw material, it can be formed in the same manner as common thermoplastic resin using extruding Melting spins obtained by machine, further, since easily make the elastic yarn thermal welding obtained in the above described manner, therefore suitable for piece 31A. As thermoplastic elastomer (TPE), for example, it can enumerate SBS (s-B-S), SIS (styrene-isoprenes-benzene Ethene), SEBS (styrene ethylene butadiene-styrene), the phenylethylene such as SEPS (styrene ethylene-propylene-styrene) Elastomer, olefin type elastomer (the alpha-olefin elastomer of vinyl, by propylene class bullet obtained by the copolymerization such as Ethylene/Butylene-octene Property body), polyester elastomer, polyurethane elastomer etc., a kind therein can be used alone or two or more is combined used.This Outside, the composite fibre of core-sheath-type or parallel type including these resins can also be used.
So, veutro outer-skin sheet 31A and dorsal part outer-skin sheet 31C have retractility, unlike this, crotch outer-skin sheet 31B and Inner layer piece 32 is non-telescoping without retractility.The piece 31B of non-telescoping, 32 preferably do not have in longitudinal X or transverse direction Y stretches Contracting, preferably any one in two direction X, Y do not have retractility.In exterior body 3, only a part (veutro portion 1A and the back of the body Sidepiece 1C) there is the outer-skin sheet 31 of retractility and the inner layer piece 32 of generally non-telescoping, there is retractility in outer-skin sheet 31 Part (veutro outer-skin sheet 31A and dorsal part outer-skin sheet 31C) elongation in the state of, engaged in relative face, therefore, with regard to exterior body 3 generally speaking, and the veutro portion A and drosal part C (waist portion) for being configured with veutro outer-skin sheet 31A and dorsal part outer-skin sheet 31C at least exist Two tensile directions of piece 31A, 31C (horizontal Y) have retractility, and other parts (lean on veutro portion 1A and dorsal part in crotch B Part beyond portion 1C part.Crotch 1B longitudinal X central portion.) do not have retractility.
Even if the power that piece substantially refers to be applied to the piece a direction stretching in a direction without retractility, The piece also hardly extends.For example, for 15 × width of length 5cm sample, utilizing the material stretch test machines such as Tensilon The sample is stretched in the longitudinal direction, when the elongation at break when the sample is broken is less than 10%, the sample is in length Do not have retractility on direction substantially.In addition, so-called elongation at break can be by (the length of the sample-sample during fracture The length of script)/(length of the sample script) × 100 calculate.
As the crotch outer-skin sheet 31B and inner layer piece 32 of non-telescoping, the nothing formed by various preparation methods is preferably used respectively Cloth is spun, such as spun-bonded non-woven fabrics, hot-wind nonwoven cloth, needle punched non-woven fabrics.It is used as the piece 31B as non-telescoping, 32 nonwoven The composition fiber of cloth, can for example enumerate including polyethylene (PE), polypropylene (PP), polyethylene terephthalate (PET), Fiber of polyester, the polyamide such as polybutylene terephthalate (PBT) etc. etc..Constitute the piece 31B as non-telescoping, 32 nothing The fiber for spinning cloth both can be chopped fiber, or long fibre, both can be hydrophily, or water-repellancy.In addition, Composite fibre, segmentation fiber, fibers with profiled section, crinkled fibre, heat-shrinkable fibre of core-sheath-type or parallel type etc. can be used. These fibers can be used alone a kind or combine two or more and use.
Exterior body 3 has the waist elastic members 33 for forming waist gauffer in waist opening portion WH opening edge.That is, exist The respective waist opening portion WH of veutro portion A and drosal part C opening edge, 1 or many (being many in present embodiment) waist The waist elastic members 33 of portion's gauffer formation are endlong configured throughout horizontal Y's with elongation state, thus, in waist opening portion WH, throughout its all-round waist gauffer for forming substantially continuous ring-type.Waist elastic members 33 are wire or banding, are passed through Bonding agent is clamped between the outer-skin sheet 31 and inner layer piece 32 for constituting exterior body 3.
In addition, being used as the leg elastic portion that leg creases are formed in the respective opening edge of a pair of leg opening parts LH, LH Part, exterior body 3 has configures the leg on front side of predecessor portion F 1 or many (being many in present embodiment) with elongation state Elastomeric element 34 and the leg bullet on rear side of rear body section R 1 or many (being many in present embodiment) is configured with elongation state Property part 35.As shown in Fig. 2, Fig. 3 and Fig. 5, front side leg elastic members 34 and rear side leg elastic members 35 in longitudinal X each other Configure at spaced intervals, the interval region is present in crotch 1B.Leg elastic members 34,35 are wire or banding, by viscous Agent is connect to be clamped between the outer-skin sheet 31 and inner layer piece 32 for constituting exterior body 3.Thus, in a pair of leg opening parts LH, LH Respective opening edge, throughout its all-round leg creases for being formed with substantially continuous ring-type.Leg elastic members 34,35 The transverse direction Y position in outside is at least leaned in the both side edges along longitudinal X than absorbent main body 2 in the way of embodying elastic extension Configured with elongation state, and the central portion of at least transverse direction Y at the position present in absorbent main body 2 is not to embody elastic telescopic Property state configuration.
In the figure 7, by the skin of absorbent core 23 with respect to surface side enlarged representation.Absorbent core 23 includes that there is upper strata to absorb Property core 230 and configuration the upper strata absorbent core 230 two layer of lower floor absorbent core 231 construction of the non-skin with respect to surface side. On upper strata absorbent core 230, be formed as when overlooking, longitudinal X front side (part for depending on veutro portion 1A) is wider than other parts The elongate shape of width, compared with lower floor's absorbent core 231, longitudinal X length is shorter, and with transverse direction Y in lower floor absorbent core 231 The length of the most short most narrow width part of length (width) compare, horizontal Y length is shorter.On lower floor's absorbent core 231, indulge Length (width) to X central portion transverse direction Y compared with each of rear ends (longitudinal both ends) is shorter, is formed as longitudinal X The vertical view that inside contracts of central portion it is hourglass-shaped (dumbbell shaped), compared with upper strata absorbent core 230, size (area) during vertical view compared with Greatly.When overlooking, the entirety of upper strata absorbent core 230 is overlapping with lower floor absorbent core 231, the formation absorption of lower floor's absorbent core 231 The profile of property core 23.Upper strata absorbent core 230 on the skin opposite face of lower floor's absorbent core 231, positioned at lower floor's absorbability Longitudinal X of core 231 center is compared to slightly bias in the position by veutro portion 1A.Upper strata absorbent core 230 and lower floor's absorbent core 231 can also be engaged with each other by bonding agent, but in the present embodiment, both are not engaged with each other, and both not can not The one divided, and can separate.
The grammes per square metre of upper strata absorbent core 230 is preferably 150g/cm2More than, and then preferably 200g/cm2More than, moreover, excellent Elect 400g/cm as2Hereinafter, and then preferably 350g/cm2Hereinafter, more specifically, preferably 150g/cm2Above and 400g/ cm2Hereinafter, and then preferably 200g/cm2Above and 350g/cm2Below.
The grammes per square metre of lower floor's absorbent core 231 is preferably 150g/cm2More than, and then preferably 200g/cm2More than, moreover, excellent Elect 400g/cm as2Hereinafter, and then preferably 350g/cm2Hereinafter, more specifically, preferably 150g/cm2Above and 400g/ cm2Hereinafter, and then preferably 200g/cm2Above and 350g/cm2Below.
When paper pulp to be used as to the formation material of upper strata absorbent core 230, the grammes per square metre of the paper pulp is preferably 75g/cm2With On, and then preferably 100g/cm2More than, also, it is preferred that being 200g/cm2Hereinafter, and then preferably 175g/cm2Hereinafter, more For body, preferably 75~200g/cm2, and then preferably 100~175g/cm2
When paper pulp to be used as to the formation material of lower floor's absorbent core 231, the grammes per square metre of the paper pulp is preferably 75g/cm2With On, and then preferably 100g/cm2More than, also, it is preferred that being 200g/cm2Hereinafter, and then preferably 175g/cm2Hereinafter, more For body, preferably 75g/cm2Above and 200g/cm2Hereinafter, and then preferably 100g/cm2Above and 175g/cm2Below.
When water absorbent polymer to be used as to the formation material of upper strata absorbent core 230, the grammes per square metre of the water absorbent polymer Preferably 75g/cm2More than, and then preferably 100g/cm2More than, also, it is preferred that being 200g/cm2Hereinafter, and then preferably 175g/cm2Hereinafter, more specifically, preferably 75g/cm2Above and 200g/cm2Hereinafter, and then preferably 100g/cm2More than And 175g/cm2Below.
When water absorbent polymer to be used as to the formation material of lower floor's absorbent core 231, the grammes per square metre of the water absorbent polymer Preferably 75g/cm2More than, and then preferably 100g/cm2More than, also, it is preferred that being 200g/cm2Hereinafter, and then preferably 175g/cm2Hereinafter, more specifically, preferably 75g/cm2Above and 200g/cm2Hereinafter, and then preferably 100g/cm2More than And 175g/cm2Below.
Abreast linearly extend with longitudinal X as shown in fig. 7, both side edges 231S, 231S of lower floor's absorbent core 231 have Width certain area P1, P2, P3.Front side width certain area P1 is located at longitudinal X of lower floor's absorbent core 231 leading section (longitudinal end of veutro portion 1A sides), central width certain area P2 is located at longitudinal X of lower floor's absorbent core 231 central portion (longitudinal end of veutro portion 1A sides), back side width certain area P3 is located at longitudinal X of lower floor's absorbent core 231 rearward end (longitudinal end of drosal part 1C sides).Front side width certain area P1 is located at positioned at veutro portion 1A, central width certain area P2 Crotch 1B, back side width certain area P3 are located at drosal part 1C.The length of longitudinal X in 3 width certain areas P1, P2, the P3 It is central width certain area P2 to spend most long region, in addition, front side width certain area P1 and back side width certain area P3 In, longitudinal X of the latter length is longer.
In addition, lower floor's absorbent core 231 is before and after the central width certain area P2 and longitudinal direction X of longitudinal X central portion Between the front side width certain area P1 and back side width certain area P3 width certain area each of end, absorbed with lower floor The change width region that the side that both side edges 23S, 23S of property core 231 are intersected in two directions with longitudinal X and transverse direction Y is upwardly extended Q1、Q2.Front side change width region Q1 is located between front side width certain area P1 and central width certain area P2, and rear side is wide Region of variation Q2 is spent to be located between back side width certain area P3 and central width certain area P2.Front side change width region Q1 Near veutro portion 1A and crotch 1B boundary or veutro portion 1A leans on the intersection, back side width region of variation Q2 is located at the back of the body Sidepiece 1C and crotch 1B boundary is neighbouring or crotch 1B by the intersection.Both side edges 231S, 231S of lower floor's absorbent core 231 In the Q1 of front side change width region, the boundary using front side width certain area P1 and front side change width region Q1 as starting point, Obliquely extend to longitudinal X inner side and to horizontal Y inner side, in addition, in back side width region of variation Q2, with back side width Certain area P3 and back side width region of variation Q2 boundary is starting point, to longitudinal X inner side and to horizontal Y inner side obliquely Extension, in any region Q1, Q2 overlook when be straight line.The profile of the formation absorbent core 23 of lower floor's absorbent core 231, because Both side edges 231S, 231S of this lower floor's absorbent core 231 are also the both side edges along longitudinal X of absorbent core 23.
In the horizontal Y of lower floor's absorbent core 231 central portion, insertion lower floor's absorbent core 231 in a thickness direction Narrow central portion 5 is formed in the way of extending in longitudinal X, and two outsides of the horizontal Y in central portion 5, A pair of insertion lower floor absorbent core 231 narrow side opening portions 6,6 extend in longitudinal X and with central opening on thickness direction Portion 5 is asymmetrically formed on the basis of (so that diaper 1 to be divided into two-part mode in the horizontal center line Ly that longitudinal X extends in horizontal Y). The opening portion 5,6 is the spatial portion in the absence of absorbent core formation material, is configured in crotch 1B.The opening portion 5,6 is narrow Width, the i.e. length (width) of transverse direction Y is shorter than longitudinal X length, and preferably laterally Y length is 1/5th of longitudinal direction X length Below.Central portion 5 is on horizontal center line Ly from the central width certain area P2 of lower floor's absorbent core 231 to back side width Region of variation Q2 continuously extends, and is formed as overlooking rectangular shape.A pair of sides opening portion 6,6 is integrally located at central width respectively Certain area P2, continuously extends in longitudinal X, is formed as the outside that when overlooking bottom (side longer than upper bottom) is located at transverse direction Y Isosceles-trapezium-shaped.In the side opening portion 6 for overlooking isosceles-trapezium-shaped, lateral border 6S2 is the trapezoidal bottom, inner side Edge 6S1 is the trapezoidal upper bottom.The longitudinal direction X compared with side opening portion 6 of central portion 5 length is longer, central portion 5 Longitudinal X front and back end 5F, 5R is located at the position of front and back end 6F, 6R by longitudinal direction X outside of longitudinal X than side opening portion 6.
On the other hand, it is overlapping with the central portion 5 of lower floor absorbent core 231 when overlooking in upper strata absorbent core 230 Region in, do not formed insertion upper strata absorbent core 230 in a thickness direction and longitudinal X extend opening portion.In this reality Apply in mode, the absorbent core 230 on upper strata, not only the area overlapping with the central portion 5 of lower floor absorbent core 231 when overlooking Domain does not form opening portion, and other regions beyond the region do not form the insertion in a thickness direction upper strata absorbability yet Core 230 and the opening portion (spatial portion that absorbent core formation material is not present) extended in longitudinal X.
In top view as shown in Figure 7, upper strata absorbent core 230 is overlapping with central portion 5, and central portion 5 throughout longitudinal X of upper strata absorbent core 230 endlong extension.In the present embodiment, before longitudinal X of central portion 5 Outside extensions of both 5F and rear end 5R from longitudinal X of upper strata absorbent core 230 front and back end to longitudinal X is held, on them Development length, rear end 5R sides be more than front end 5F sides.
So, the absorbent core 23 (lower floor's absorbent core 231) in the diaper 1 of present embodiment has 1 in crotch 1B Central portion 5 and a pair of sides opening portion 6,6, and the opening portion alignment area arranged with the plurality of opening portion on longitudinal X Domain R1.Opening portion arrange across the front side leg elastic members 34 of region R1 and rear side leg elastic members 35 on longitudinal X each other every Open longitudinal X of the interval region of configuration total length.
The diaper 1 of present embodiment includes:1 central portion 5 and a pair of sides opening portion 6 in absorbent core 23, 6;There is the three-dimensional gauffer 24 of base end part 27 with respect to surface side in the skin of absorbent core 23;With it is above-mentioned " diaper 1 expansion and Elongation state nutation apparent time, three-dimensional gauffer formation is overlapping with absorbent core 23 with elastomeric element 26 " structure, mainly due to the original Cause, absorbent core 23 when wearing in crotch 1B is as shown in Figure 8 along in horizontal Y sectional view, with central portion 53 W shape is bent to for the mode that mountain portion and side opening portion 6 are valley.In addition, the wearing for diaper 1 of reference 100 in Fig. 8 The crotch part for the person of wearing.In addition, making it easy to for the viewpoint of explanation, in fig. 8, the part for omitting the component parts of diaper 1 is (outer Fill body 3 etc.) diagram.
That is, in the dress operation of diaper 1, the shape inserted in two legs enabled a wearer in a pair of leg opening parts LH, LH Under state, when diaper 1 is lifted to the crotch part side of wearer, pass through the contraction of three-dimensional gauffer formation elastomeric element 26, a pair Three-dimensional gauffer 24,24 is erected to the crotch part of wearer, thus absorbent core 23 (lower floor's absorbent core 231) along longitudinal X's Both sides are erected in the way of to the relative surface side bending of skin.Now, in opening portion arrangement region R1, positioned at than a pair of sides Opening portion 6,6 by transverse direction Y outside position lower floor's absorbent core 231 both sides with to skin relatively surface side bending side Formula is erected, and the both sides erected are by the central portion of the lower floor's absorbent core 231 clipped by a pair of sides opening portion 6,6 in transverse direction Compressed on Y, therefore the so-called shrinkage in width that horizontal Y length shortens occurs for lower floor's absorbent core 231.So occur width to receive The central portion of lower floor's absorbent core 231 of contracting has central portion 53, and is overlap with upper strata absorbent core 230 two layers A part for construction part (in high portion), by the way that only the lower layer sides of this two layers construction part are compressed in the lateral direction y, two layers of construction The entirety of partial thickness direction is bent in central portion 5 in the way of (convex folding) is rolled on mountain, what central portion 5 was located at The horizontal Y of two layers of construction part central portion swells to the excretory portion of wearer.As a result, in opening portion arrangement region R1 Absorbent core 23 transversely in Y sectional view, mountain portion is turned into central portion 53 as shown in Figure 8 and side opening portion 6 into For the mode of valley, W shape is bent to.
Especially, upper strata absorbent core 230 in the present embodiment does not form the upper strata of insertion in a thickness direction Absorbent core 231 and the opening portion extended in longitudinal X, therefore above-mentioned upper strata absorbent core 230 and lower floor's absorbent core 231 Two layers of formations partial volume easily roll over ground bending on the mountain of central portion 5, therefore, easily occur the bending of the W shape of absorbent core 23 Deformation, and easily maintain the deformed shape.Especially, if overlapping with central portion 5 in upper strata absorbent core 230 Region be formed with above-mentioned opening portion, then there are two layers of absorbent core 23 construction part bending in the way of paddy rolls over (recessed folding) Worry, and worry that diaper 1 can not be worn with preferable shape for the aspect that wearing feeling and anti-leakage are improved.
The sight for the deformation for being easy for guiding the convex folding of two layers of absorbent core 23 construction part (in high portion) and causing W shape For point, preferably when overlooking, central portion 5 has partly overlapping for retractility with exterior body 3 in horizontal Y.As above institute State, in the present embodiment, there is the part of retractility to be configured with veutro outer-skin sheet 31A or dorsal part in horizontal Y in exterior body 3 Outer-skin sheet 31C part, therefore central portion 5 is overlapping preferably with two pieces 31A, 31C configuring area when overlooking, especially It is preferred that overlapping with veutro portion 1A and/or drosal part 1C.
The deformation of the W shape of absorbent core 23 occurs in the dress operation of diaper 1, is being worn to the hip crotch of wearer Also the deformed shape is maintained behind portion.In the crotch 1B of diaper 1, absorbent core 23 bends to W shape, thus, the phase of absorbent core 23 For flexibly being deformed from the pressure of the huckle of wearer application, thus be able to mitigate the leg application to wearer pressure and Resulting resistance sense or sense of discomfort etc., result in good wearing feeling.Especially, absorbent main body 2 along longitudinal X's Both sides are the position for easily contacting and being brought to wearing feeling considerable influence with the huckle of the wearer of diaper 1, absorbability master The both sides of body 2 do not include upper strata absorbent core 230 and thickness is relatively thin, therefore are difficult to bring wearer and wear sense of discomfort Deng the wearing feeling raising of diaper 1.In addition, the both sides of absorbent core 23 (are located at than a pair of sides opening portion 6,6 by transverse direction Y's The part in outside) erect and skin of its end along wearer is positioned preferably along pars inguinalis, thus, a pair of three-dimensional gauffers 24th, 24 fitted in the way of the pars inguinalis along wearer, so as to also result in good anti-leakage.In a word, this implementation The diaper 1 of mode is only worn in the crotch part of people by using usual method, absorbent core 23 with regard to flexural deformation into W shape, thus The horizontal Y of crotch 1B including above-mentioned middle high portion excretory portion gapless or gauffer of the central portion relative to wearer it is close to, And a pair of three-dimensional gauffers 24,24 are fitted in the way of the pars inguinalis along wearer, so as to take into account to crotch part It is close to easiness and good wearing feeling and stable absorbent properties (leak resistance).
In addition, in the present embodiment, as shown in Fig. 2, Fig. 3 and Fig. 7, upper strata absorbent core 230 and a pair when overlooking Side opening portion 6,6 is not overlapping, naturally, upper strata absorbent core 230 and positioned at than two side opening portions 6,6 more by transverse direction Y outside The both sides of lower floor's absorbent core 231 of side are not overlapping, therefore the both sides are easily erected, enabling more reliably play State opening portion arrangement region R1 etc. action effect.
In addition, in the present embodiment, as shown in Fig. 2, Fig. 3 and Fig. 7, longitudinal X of central portion 5 length is more than side Square opening portion 6, therefore be not only in central portion 5 and side opening portion 6 and the opening portion deposited arranges region R1, only existing In the region of central portion 5, two layers of construction part (horizontal Y central portion) also bending in the way of convex folding of absorbent core 23 And deform.Especially, the central portion 5 in present embodiment is from longitudinal X of upper strata absorbent core 230 rear end to longitudinal X Outside extension, the rear end 5R of the extension be located at than side opening portion 6 rear end 6R more by longitudinal direction X rear position, because The horizontal Y of absorbent core 23 after this convex folding central portion is positioned from the crotch part of wearer along gluteal fold.Therefore, diaper 1 holds Easily deformed, can embodied high conformable according to the shape of the crotch part of wearer.
In addition, what is played by " the longitudinal direction X compared with side opening portion 6 of central portion 5 length is longer " is conformable Raising effect, can also pass through " lower floor's absorbent core 231 be formed as overlook hourglass-shaped (dumbbell shaped) ", i.e. " longitudinal X center Portion transverse direction Y compared with each of rear ends (longitudinal both ends) length is shorter " and play.Therefore, with two structure The diaper 1 of present embodiment it is conformable excellent.In addition, when lower floor's absorbent core 231 is formed as overlooking hourglass-shaped, also can Play the effect for the corrugation (unexpected deformation) for being difficult to cause absorbent core 23 in the dress operation of diaper 1.
The ratio of longitudinal X of central portion 5 length and longitudinal X of side opening portion 6 length be (central portion 5 The longitudinal length of longitudinal length/side opening portion 6) it is preferably more than 1.01, and then preferably more than 1.2, also, it is preferred that being Less than 1.5, and then preferably less than 1.4, more specifically, preferably more than 1.01 and less than 1.5, so preferably 1.2 with It is upper and less than 1.4.
Longitudinal X of central portion 5 length is preferably more than 200mm, and then preferably more than 250mm, also, it is preferred that For below 400mm, and then preferably below 375mm, more specifically, preferably more than 200mm and below 400mm, Jin Eryou Elect more than 250mm and below 375mm as.
Longitudinal X of side opening portion 6 length is preferably more than 175mm, and then preferably more than 200mm, also, it is preferred that For below 350mm, and then preferably below 325mm, more specifically, preferably more than 175mm and below 350mm, Jin Eryou Elect more than 200mm and below 325mm as.
In addition, side opening portion 6 in as present embodiment, longitudinal X of opening portion length not necessarily, opening When portion has multiple longitudinal lengths, using the maximum in the plurality of longitudinal length as the opening portion longitudinal length.
In addition, central portion 5 and the respective horizontal Y in side opening portion 6 length (width) are preferably more than 5mm, enter And preferably more than 7.5mm, also, it is preferred that for below 20mm, and then preferably below 15mm, more specifically, preferably 5mm Above and below 20mm, and then preferably more than 7.5mm and below 15mm.For central portion 5 and side opening portion 6, Horizontal Y length both can be identical, also can be different.In the present embodiment, the horizontal Y of two opening portions 5,6 length is identical.
In the dress of diaper 1, just the opening portion of the absorbent core 23 in raising crotch 1B arranges region R1 horizontal Y's Central portion is body (excretory portion) of the part (in high portion) with wearer present in two layers of absorbent core 23 construction part For the viewpoint of close property, preferably in the horizontal Y side of lower floor's absorbent core 231 on the basis of horizontal center line Ly and another In each of side, side opening portion 6 and the standoff distance W2 (reference picture 7) of central portion 5 are more than lower floor's absorbent core 231 The lateral margin 231S and standoff distance W1 (reference picture 7) of side opening portion 6.When standoff distance W2 is less than standoff distance W1, inhaling When the property received core 23 is deformed into W shape, there is the load that space and close property reduction are formed between the body of above-mentioned middle high portion and wearer The heart.
Standoff distance W1 and standoff distance W2 ratio (standoff distance W1/ standoff distance W2) is preferably more than 0.4, Jin Eryou Elect more than 0.5 as, also, it is preferred that for less than 0.8, and then preferably less than 0.7, more specifically, preferably more than 0.4 and Less than 0.8, and then preferably more than 0.5 and less than 0.7.
Standoff distance W1 is preferably more than 10mm, and then preferably more than 12.5mm, also, it is preferred that being below 30mm, is entered And preferably below 27.5mm, more specifically, preferably more than 10mm and below 30mm, and then preferably more than 12.5mm and Below 27.5mm.
Standoff distance W2 is preferably more than 20mm, and then preferably more than 25mm, also, it is preferred that be below 50mm, and then Preferably below 45mm, more specifically, preferably more than 20mm and below 50mm, so preferably more than 25mm and 45mm with Under.
As shown in Fig. 2, Fig. 3 and Fig. 7, the absorbent core 23 in present embodiment has a pair of notch parts 7,7, and this pair scarce Oral area 7,7 is respectively from longitudinal X of absorbent core 23 front and back end, i.e. longitudinal X of lower floor's absorbent core 231 front and back end to longitudinal direction Cut and obtain in X inner side.Notch part 7 is with to going on the inside of longitudinal X and transverse direction Y length (width) is reduced.A pair of notch parts 7th, one of 7 with another one overlook when be same shape, identical size.Notch part 7 in present embodiment is formed as overlooking V Shape, with to going on the inside of longitudinal X and width is gradually decreased.Top (top of V words) centrally located opening portion of notch part 7 On 5 extended line (horizontal center line Ly).Notch part 7 is formed with longitudinal X of absorbent core 23 front and back end, thus, in dress Two layers of construction part (horizontal Y central portion) easily bending in the way of convex folding of absorbent core 23 during diaper 1, therefore absorbability Core 23 is easily deformed as W shape, and positioned at part, the i.e. absorbent core in a pair of respective horizontal Y of notch part 7,7 two outsides 23 corner is easily to skin with respect to surface side bending, and thus absorbent core 23 is easily deformed the body for the wearer that is easy to fit Boat-like shape, as a result can be improved conformable.
In the present embodiment, beyond notch part 7, also use can guide the absorbent core 23 when wearing diaper 1 to become Shape is the structure of boat-like shape.I.e., in the present embodiment, as shown in fig. 7, a pair of sides opening portion 6,6 is respectively formed as outside Lateral margin 6S2 longitudinal X length be more than interior lateral margin 6S1 longitudinal X length, and be formed as overlook when using interior lateral margin 6S1 as Lateral border 6S2 is set to the isosceles-trapezium-shaped of bottom by upper bottom, and longitudinal X front and back end 6F, 6R is respectively with lateral border 6S2 length The end in direction is starting point, is obliquely extended to longitudinal X inner side and to horizontal Y inner side.Moreover, in the present embodiment, In each of the horizontal Y of the absorbent core 23 on the basis of horizontal center line Ly side and opposite side, side opening portion 6 it is vertical It is located at the side of lower floor's absorbent core 231 (absorbent core 23) in change width region Q1, Q2 respectively to X front and back end 6F, 6R On edge 231S extended line.By the structure, when wearing diaper 1, the corner of absorbent core 23 is easier to skin with respect to surface side Bending, therefore absorbent core 23 easily becomes boat-like shape.
In addition, being easy for causing absorbent core 23 to be deformed into for the viewpoint of boat-like shape, as shown in Fig. 2 in diaper 1 Expansion and elongation state nutation apparent time, three-dimensional gauffer formation elastomeric element 26 is preferably placed at (to be absorbed than lower floor absorbent core 231 Property core 23) longitudinal X central portion central width certain area P2 in lateral margin 231S by transverse direction Y outside position, and Transverse direction in width certain area P1, P3 of the rear ends of longitudinal X than lower floor absorbent core 231 (absorbent core 23) The lateral margin 231S of the longer side (the lateral margin 231S side for being located away from horizontal center line Ly) of Y length leans on transverse direction Y inner side Position.The region shown in reference R2 in Fig. 7 is equivalent to above-mentioned zone.Expansion and elongation state nutation in diaper 1 Apparent time, three-dimensional gauffer formation is located at region R2 with elastomeric element 26, thus, when wearing diaper 1, can promote absorbent core The formation of 23 boat-like shape, and can improve conformable.
More than, the present invention is preferred embodiment illustrated based on it, but the present invention is not limited to above-mentioned reality Apply mode.For example in the above-described embodiment, outer-skin sheet 31 is the structure of multiple of combination, but it is also possible to same with inner layer piece 32 Ground is made up of 1 continuous piece.In addition, exterior body 3 is divided into positioned at the exterior body ventral region of veutro portion and positioned at dorsal part The exterior body dorsal part region in portion, absorbent main body 2 can also be set up in above-mentioned exterior body ventral region and above-mentioned exterior body dorsal part Region and fixation.
In addition, the absorbent commodity of the present invention is not limited to Breeches type disposable diaper, and include being used to absorb extensively The article for the liquid discharged from human body, also including flat type disposable diaper, menstrual hygiene cotton, menstrual period shorts etc..On above-mentioned Embodiments of the present invention, further disclose herein below.
The > of < 1
A kind of absorbent commodity, it has the absorbent core of liquid retainability, and has veutro of the configuration in wearer Veutro portion, configure in the drosal part of dorsal part and positioned at the crotch between them, and with prolonging from the veutro portion via the crotch Extend in the longitudinal direction of the drosal part and the transverse direction orthogonal with the longitudinal direction, the absorbent commodity,
The absorbent core includes with upper strata absorbent core and configures the non-skin opposite face in the upper strata absorbent core Two layers of construction of lower floor's absorbent core of side,
In the lateral center portion of lower floor's absorbent core, insertion lower floor's absorbent core is narrow in a thickness direction Central portion is formed in the way of in Longitudinal extending, also, in the two horizontal outsides of the central portion, in thickness direction A pair of narrow side opening portions of upper insertion lower floor's absorbent core are in Longitudinal extending and on the basis of the central portion It is asymmetrically formed,
When overlooking, the upper strata absorbent core and the central portion are overlapping, also, the central portion is throughout this Longitudinal total length extension of upper strata absorbent core,
In the upper strata absorbent core, the area overlapping with the central portion of lower floor's absorbent core when overlooking In domain, the opening portion in Longitudinal extending of the upper strata absorbent core of insertion in a thickness direction is not formed,
The relative surface side of skin in the left and right sides portion along longitudinal direction of the absorbent core, is provided with when wearing to dress The three-dimensional gauffers in the skin side of person erect a pair, the three-dimensional gauffer with respect to surface side in the skin of the absorbent core to have base end part And erected in the mode that the skin side of wearer forms free end, three-dimensional gauffer formation elastomeric element is in longitudinal direction with elongation state The free end is configured at,
Expansion and elongation state nutation apparent time in the absorbent commodity, the three-dimensional gauffer formation elastomeric element with The absorbent core is overlapping.
The > of < 2
The absorbent commodity that such as the above-mentioned > of < 1 are recorded, wherein, when overlooking, the upper strata absorbent core and the side are opened Oral area is not overlapping.
The > of < 3
The absorbent commodity that such as the above-mentioned > of the < 1 or > of < 2 are recorded, wherein, the central portion and the side opening Portion is longer compared to the length of longitudinal direction.
The > of < 4
The absorbent commodity that such as any one of above-mentioned > of the > of < 1 to < 3 are recorded, wherein, respectively in lower floor's absorbability The horizontal side of core and opposite side, the side opening portion and the standoff distance of the central portion are more than lower floor's absorbability The standoff distance of the lateral margin and the side opening portion along longitudinal direction of core.
The > of < 5
Such as the absorbent commodity that any one of above-mentioned > of the > of < 1 to < 4 are recorded, wherein, lower floor's absorbent core it is vertical It is shorter to central portion length horizontal compared with each of longitudinal rear ends.
The > of < 6
The absorbent commodity that such as any one of above-mentioned > of the > of < 1 to < 5 are recorded, wherein, the absorbent core has a pair Notch part, a pair of notch parts are cut and obtained from longitudinal front and back end of the absorbent core to longitudinal medial respectively,
The notch part to longitudinal medial with going and horizontal length reduction, when overlooking, the top position of the notch part In on the extended line of the central portion.
The > of < 7
The absorbent commodity that such as any one of above-mentioned > of the > of < 1 to < 6 are recorded, wherein, lower floor's absorbent core is vertical The both side edges of forward end, central portion and rearward end respectively with lower floor's absorbent core and the width one longitudinally parallel extended Determine region, and between the width certain area in the longitudinally central portion and the width certain area each of longitudinal rear ends The change width that both side edges with lower floor's absorbent core are upwardly extended in the side intersected with the two directions of vertical and horizontal Region,
The length of the lateral border of side opening portion longitudinal direction compared with interior lateral margin is longer,
Respectively in the horizontal side of lower floor's absorbent core and opposite side, longitudinal front and back end of the side opening portion It is located at respectively on the extended line of the lateral margin of lower floor's absorbent core in the change width region.
The > of < 8
The absorbent commodity that such as the above-mentioned > of < 7 are recorded, wherein, expansion and elongation state nutation in the absorbent commodity Apparent time, the three-dimensional gauffer formation is located in the width certain area than the longitudinally central portion of the absorbent core with elastomeric element Lateral margin lean on the position of lateral outer side, and positioned at than the transverse direction in the width certain area of longitudinal rear ends of the absorbent core The position of laterally inboard is leaned in the lateral margin of the longer side of length.
The > of < 9
The absorbent commodity that such as any one of above-mentioned > of the > of < 1 to < 8 are recorded, wherein, the longitudinal direction of the central portion Rear end extend from longitudinal rear end of the upper strata absorbent core to longitudinally outboard.
The > of < 10
The absorbent commodity that such as any one of above-mentioned > of the > of < 1 to < 8 are recorded, wherein, the longitudinal direction of the central portion Front-end and back-end both extend from longitudinal front and back end of the upper strata absorbent core to longitudinally outboard, the extension of rear end side Length is more than the development length of front.
The > of < 11
Such as the absorbent commodity that any one of above-mentioned > of the > of < 1 to < 10 are recorded, wherein, the crotch have it is described in Opening portion is entreated to arrange region in the opening portion of longitudinal arrangement with the pair of side opening portion.
The > of < 12
The absorbent commodity that such as any one of above-mentioned > of the > of < 1 to < 11 are recorded, wherein, the longitudinal direction of the central portion Rear end there is extension from longitudinal rear end of the upper strata absorbent core to longitudinally outboard that extend from, the rear end of the extension Position positioned at the rear end than the side opening portion more by longitudinal rear.
The > of < 13
The absorbent commodity that such as any one of above-mentioned > of the > of < 1 to < 12 are recorded, wherein, the upper strata absorbent core is formed For the width of the front side (part for leaning on the veutro portion) of longitudinal direction when the overlooking elongate shape bigger than other parts.
The > of < 14
The absorbent commodity that such as any one of above-mentioned > of the > of < 1 to < 13 are recorded, wherein, the upper strata absorbent core is in institute State on the skin opposite face of lower floor's absorbent core, slightly bias is in by institute compared with longitudinal center with lower floor's absorbent core State the position of veutro portion.
The > of < 15
Such as the absorbent commodity that any one of above-mentioned > of the > of < 1 to < 14 are recorded, it includes:With the absorbent core Absorbent main body;Fix the exterior body of the absorbent main body with respect to surface side in the non-skin of the absorbent main body with configuration.
The > of < 16
The absorbent commodity that such as the above-mentioned > of < 15 are recorded, wherein, the exterior body is included in the portion laterally with retractility Point.
The > of < 17
Such as the absorbent commodity that the above-mentioned > of < 16 are recorded, wherein, in the vertical view, the central portion and described outer Laterally there is partly overlapping for retractility in dress body.
The > of < 18
The absorbent commodity that such as any one of above-mentioned > of the > of < 15 to < 17 are recorded, wherein, the absorbent commodity is short Pant-type disposable diaper.
The > of < 19
The absorbent commodity that such as any one of above-mentioned > of the > of < 15 to < 18 are recorded, wherein, the absorbent main body includes: Form the positive dough sheet of skin opposite face;Form the back sheet of non-skin opposite face;And the absorbability between two pieces Core.
The > of < 20
The absorbent commodity that such as any one of above-mentioned > of the > of < 15 to < 19 are recorded, wherein, the exterior body includes outer layer The layered product of piece and inner layer piece.
The > of < 21
The absorbent commodity that such as the above-mentioned > of < 20 are recorded, wherein, the outer-skin sheet includes:Constitute the veutro of the veutro portion Outer-skin sheet;Constitute the dorsal part outer-skin sheet of the drosal part;And the crotch outer layer of the crotch is constituted between two pieces Piece.
The > of < 22
The absorbent commodity that such as the above-mentioned > of < 21 are recorded, wherein, the veutro outer-skin sheet and the dorsal part outer-skin sheet are in horizontal stroke To with retractility.
The > of < 23
The absorbent commodity that such as the above-mentioned > of the < 21 or > of < 22 are recorded, wherein, the crotch outer-skin sheet and the inner layer piece It is non-retractility without retractility.
The > of < 24
The absorbent commodity that such as any one of above-mentioned > of the > of < 21 to < 23 are recorded, wherein, the veutro outer-skin sheet and institute State the elastic yarn that there is dorsal part outer-skin sheet the one side in the tensile fibrous layer based on non-elastic fiber to be bonded to wire Structure.
The > of < 25
The absorbent commodity that such as any one of above-mentioned > of the > of < 21 to < 24 are recorded, wherein, when overlooking, the center is opened Oral area is overlapping with the configuring area of any one of the veutro outer-skin sheet and the dorsal part outer-skin sheet.
The > of < 26
The absorbent commodity that such as any one of above-mentioned > of the > of < 1 to < 25 are recorded, wherein, the surface quilt of the absorbent core Clad sheet is coated.
The > of < 27
The absorbent commodity that such as any one of above-mentioned > of the > of < 1 to < 26 are recorded, wherein, gram of the upper strata absorbent core It is preferably 150g/cm again2More than, and then preferably 200g/cm2More than, also, it is preferred that being 400g/cm2Hereinafter, and then preferably 350g/cm2Hereinafter, more specifically, preferably 150g/cm2Above and 400g/cm2Hereinafter, and then preferably 200g/cm2With Upper and 350g/cm2Below.
The > of < 28
The absorbent commodity that such as any one of above-mentioned > of the > of < 1 to < 27 are recorded, wherein, lower floor's absorbent core 231 Grammes per square metre be preferably 150g/cm2More than, and then preferably 200g/cm2More than, also, it is preferred that being 400g/cm2Hereinafter, Jin Eryou Elect 350g/cm as2Hereinafter, more specifically, preferably 150g/cm2Above and 400g/cm2Hereinafter, and then preferably 200g/ cm2Above and 350g/cm2Below.
The > of < 29
The absorbent commodity that such as any one of above-mentioned > of the > of < 1 to < 28 are recorded, wherein, the longitudinal direction of the central portion Length and the longitudinal direction of longitudinal length/side opening portion of the ratio of the longitudinal length of the side opening portion, i.e. central portion are long Degree is preferably more than 1.01, and then preferably more than 1.2, also, it is preferred that being less than 1.5, and then preferably less than 1.4, more For body, preferably more than 1.01 and less than 1.5, and then preferably more than 1.2 and less than 1.4.
The > of < 30
The absorbent commodity that such as any one of above-mentioned > of the > of < 1 to < 29 are recorded, wherein, the longitudinal direction of the central portion Length is preferably more than 200mm, and then preferably more than 250mm, also, it is preferred that for below 400mm, and then preferably 375mm Hereinafter, more specifically, preferably more than 200mm and below 400mm, and then preferably more than 250mm and below 375mm.
The > of < 31
The absorbent commodity that such as any one of above-mentioned > of the > of < 1 to < 30 are recorded, wherein, the longitudinal direction of the side opening portion Length is preferably more than 175mm, and then preferably more than 200mm, also, it is preferred that for below 350mm, and then preferably 325mm Hereinafter, more specifically, preferably more than 175mm and below 350mm, and then preferably more than 200mm and below 325mm.
The > of < 32
Such as the absorbent commodity that any one of above-mentioned > of the > of < 1 to < 31 are recorded, wherein, above-mentioned central portion and above-mentioned The respective lateral length in side opening portion is preferably more than 5mm, and then preferably more than 7.5mm, also, it is preferred that for 20mm with Under, and then preferably below 15mm, more specifically, preferably more than 5mm and below 20mm, and then preferably more than 7.5mm And below 15mm.
The > of < 33
The absorbent commodity that such as any one of above-mentioned > of the > of < 1 to < 32 are recorded, wherein, the edge of lower floor's absorbent core The lateral margin of longitudinal direction and the standoff distance W1 of the side opening portion and the side opening portion and the phase gauge of the central portion Ratio, i.e. standoff distance W1/ standoff distances W2 from W2 are preferably more than 0.4, and then preferably more than 0.5, also, it is preferred that being Less than 0.8, and then preferably less than 0.7, more specifically, preferably more than 0.4 and less than 0.8, and then preferably more than 0.5 And less than 0.7.
The > of < 34
The absorbent commodity that such as the above-mentioned > of < 33 are recorded, wherein, the standoff distance W1 is preferably more than 10mm, Jin Eryou Elect more than 12.5mm as, also, it is preferred that for below 30mm, and then preferably below 27.5mm, more specifically, preferably 10mm Above and below 30mm, and then preferably more than 12.5mm and below 27.5mm.
The > of < 35
Such as the absorbent commodity that the above-mentioned > of < 33 or the > of < 34 are recorded, wherein, above-mentioned standoff distance W2 be preferably 20mm with On, and then preferably more than 25mm, also, it is preferred that be below 50mm, and then preferably below 45mm, more specifically, preferably For more than 20mm and below 50mm, and then preferably more than 25mm and below 45mm.
The > of < 36
The absorbent commodity that such as any one of above-mentioned > of the > of < 1 to < 35 are recorded, wherein, the lateral length of central portion Shorter than longitudinal length, preferably laterally length is less than 1/5th of longitudinal length.
The > of < 37
The absorbent commodity that such as any one of above-mentioned > of the > of < 1 to < 36 are recorded, wherein, the lateral length of side opening portion Shorter than longitudinal length, preferably laterally length is less than 1/5th of longitudinal length.
Embodiment
Hereinafter, the present invention is further illustrated by embodiment, but the present invention is not limited to the embodiment.
(embodiment 1)
According to usual method, produce with the pants type one with the identical basic structure of diaper 1 shown in Fig. 1~Fig. 5 Secondary property diaper.The use of grammes per square metre is 25g/m as positive dough sheet 212SC250R (RENGO NONWOVEN PRODUCTS shares have Limit company manufactures), the use of grammes per square metre is 20g/m as back sheet 222C3Y6020A5A (resin limited company of Mitsubishi systems Make), as exterior body, using commercially available Breeches type disposable diaper, (Kao Corporation manufactures, trade name " RELIEF Vigor paper diaper feel at ease relax it is slim ") exterior body.As absorbent core formation material, paper pulp fiber and water-absorbent polymeric are used Composition granule, according to usual method, makes their mixed products fine and obtains upper strata absorbent core 230 and lower floor's absorbent core 231.Under When the fine absorbent core of product forms material in the manufacturing process of layer absorbent core 231, the non-product for forming absorbent core formation material is fine Portion, the central portion 5 formed by the non-long-pending fibre portion and side opening portion 6 are formed in lower floor's absorbent core 231.By two absorbabilities Core 230,231 is laminated and obtained the absorbent core 23 of two layers shown in Fig. 7 construction, using including grammes per square metre 16g/m2Hydrophily and The clad sheet of the paper of liquid permeability coats the absorbent core 23, and produces absorber.
The size of absorbent core used in embodiment 1 is that the longitudinal length of lower floor's absorbent core is 520mm, lower floor The Breadth Maximum of absorbent core is 180mm, and the minimum widith of lower floor's absorbent core is 140mm, and the thickness of lower floor's absorbent core is 2.2mm, the longitudinal length of upper strata absorbent core is 230mm, and the Breadth Maximum of upper strata absorbent core is 64mm, upper strata absorbent core Minimum widith be 50mm, the thickness of upper strata absorbent core is 2.1mm.In addition, in lower floor's absorbent core, central portion Longitudinal length is 340mm, and the width of central portion is 10mm, and the longitudinal length of side opening portion is 265mm, side opening portion Width be 10mm.In addition, the standoff distance W1 of the lateral margin of lower floor's absorbent core and side opening portion is 20mm, side opening portion Standoff distance W2 with central portion is 35mm.
(comparative example 1)
As absorbent core, in addition to using the absorbent core 90 of the monolayer constructions shown in Fig. 9 (a), with the phase of embodiment 1 Same mode makes Breeches type disposable diaper.Absorbent core 90 includes overlooking the He of middle absorbent portion 91 of hourglass-shaped (dumbbell shaped) A pair of sides absorption portion 92,92 extended positioned at the horizontal Y for inside contracting portion of the middle absorbent portion 91 outside and in longitudinal X, Between middle absorbent portion 91 and a pair of sides absorption portion 92,92 each, the space in the absence of absorbent core formation material is formed with Portion's (cutting portion) 93.Spatial portion 93 is functionally identical with opening portion.In longitudinal X of middle absorbent portion 91 front and back end, it is formed with Overlook a pair of notch parts of V shape.
The size of absorbent core 90 used in comparative example 1 is that the longitudinal length of middle absorbent portion 91 is 580mm, in The Breadth Maximum for entreating absorption portion 91 is 180mm, and the minimum widith of middle absorbent portion 91 is 140mm, the thickness of middle absorbent portion 91 For 2.2mm, the longitudinal length in side absorption portion 92 is 310mm, and the width in side absorption portion 92 is 33mm, side absorption portion 92 Thickness is 2.2mm, and the width (middle absorbent portion 91 and the standoff distance in side absorption portion 92) of spatial portion 93 is 15mm.
(comparative example 2)
Except the absorbent core 95 for the monolayer constructions for using the vertical view shown in Fig. 9 (b) hourglass-shaped (dumbbell shaped) is as absorbability Beyond core, Breeches type disposable diaper is made in the same manner as example 1.Opening portion is not formed in absorbent core 95.
The longitudinal length of the size of absorbent core 95 used in comparative example 2 is that 460mm, Breadth Maximum are 200mm, most Small width is that 120mm, thickness are 6.5mm.
For embodiment and the Breeches type disposable diaper of comparative example, liquid absorption amount and dress are evaluated by following methods Sense.It the results are shown in table 1 below.
The evaluation method > of < liquid absorption amounts
Using adult's model of liquid can be injected from the point of release to diaper, so that the upright state dress of the model is commented After the Breeches type disposable diaper of valency object, the model is set to lay across 90 degree.Then, arranged using the liquid that function is adjusted with speed Go out pump, 100g physiological saline is injected from the point of release with 5g/sec speed.After standing 10 minutes, visually it is confirmed whether to exist and lets out Leakage, if No leakage, is similarly injected 100g physiological saline with 5g/sec speed from the point of release repeatedly.What is leaked Moment stops the injection of physiological saline, regard the difference of the weight of the diaper before and after injection as liquid absorption amount.The liquid absorption amount Measured value it is bigger, absorbability is higher, can be evaluated as anti-leakage excellent.
The evaluation method > of < wearing feelings
For 5 subjects, after the Breeches type disposable diaper of embodiment and comparative example is worn, without tune manually It is whole and just evaluate wearing feeling in this condition.After dress, make subject implement to bend over one's desk working for 2 hours, commented with 5 stages The wearing feeling of the diaper of valency now.The evaluation in 5 stages is set to " good:It is 5 points, slightly good:4 points, typically:It is 3 points, slightly worse:2 points, Difference:1 point ", during evaluation by average mark more than 4 points be set to ◎, be set to zero by more than 3 points, △ be set to by more than 2 points, will be less than 2 points Be set to ×.
[table 1]
Industrial applicability
According to the present invention, there is provided the excellent absorbent commodity of a kind of wearing feeling and anti-leakage.

Claims (29)

1. a kind of absorbent commodity, it has the absorbent core of liquid retainability, and with the abdomen configured in the veutro of wearer Sidepiece, configuration have from the veutro portion via crotch extension in the drosal part of dorsal part and positioned at the crotch between them To the longitudinal direction of the drosal part and the transverse direction orthogonal with the longitudinal direction, the absorbent commodity is characterised by:
The absorbent core is included with upper strata absorbent core and configuration in the relative surface side of non-skin of the upper strata absorbent core Two layers of construction of lower floor's absorbent core,
In the narrow center of the lateral center portion of lower floor's absorbent core, in a thickness direction insertion lower floor's absorbent core Opening portion is formed in the way of in Longitudinal extending, also, in the two horizontal outsides of the central portion, is passed through in a thickness direction Lead to lower floor's absorbent core a pair of narrow side opening portions Longitudinal extending and on the basis of the central portion it is symmetrical Ground is formed,
When overlooking, the upper strata absorbent core and the central portion are overlapping, also, the central portion is throughout the upper strata Longitudinal total length extension of absorbent core,
In the upper strata absorbent core, the region overlapping with the central portion of lower floor's absorbent core when overlooking In, the opening portion in Longitudinal extending of the upper strata absorbent core of insertion in a thickness direction is not formed,
The relative surface side of skin in the left and right sides portion along longitudinal direction of the absorbent core, is provided with when wearing to wearer's The three-dimensional gauffers in skin side erect a pair, the three-dimensional gauffer with the skin of the absorbent core with respect to surface side have base end part and The mode that the skin side of wearer forms free end is erected, and three-dimensional gauffer formation is configured with elastomeric element in longitudinal direction with elongation state In the free end,
Expansion and elongation state nutation apparent time in the absorbent commodity, the three-dimensional gauffer formation elastomeric element with it is described Absorbent core is overlapping.
2. absorbent commodity as claimed in claim 1, it is characterised in that:
When overlooking, the upper strata absorbent core and the side opening portion be not overlapping.
3. absorbent commodity as claimed in claim 1 or 2, it is characterised in that:
The length of central portion longitudinal direction compared with the side opening portion is longer.
4. such as absorbent commodity according to any one of claims 1 to 3, it is characterised in that:
Respectively in the horizontal side of lower floor's absorbent core and opposite side, the side opening portion and the central portion Standoff distance is more than the standoff distance of the lateral margin and the side opening portion along longitudinal direction of lower floor's absorbent core.
5. such as absorbent commodity according to any one of claims 1 to 4, it is characterised in that:
The longitudinally central portion of lower floor's absorbent core length horizontal compared with each of longitudinal rear ends is shorter.
6. such as absorbent commodity according to any one of claims 1 to 5, it is characterised in that:
The absorbent core has a pair of notch parts, and a pair of notch parts are respectively from longitudinal front and back end of the absorbent core to longitudinal direction Inner side is cut and obtained,
The notch part to longitudinal medial with going and horizontal length reduction, when overlooking, and the top of the notch part is located at institute State on the extended line of central portion.
7. such as absorbent commodity according to any one of claims 1 to 6, it is characterised in that:
Lower floor's absorbent core has the both side edges of lower floor's absorbent core in longitudinal leading section, central portion and rearward end respectively With the width certain area longitudinally parallel extended, and in width certain area and longitudinal front and back end in the longitudinally central portion The both side edges with lower floor's absorbent core are handed over the two directions of vertical and horizontal between the width certain area each in portion The change width region that the side of fork is upwardly extended,
The length of the lateral border of side opening portion longitudinal direction compared with interior lateral margin is longer,
Respectively in the horizontal side of lower floor's absorbent core and opposite side, longitudinal front and back end difference of the side opening portion On the extended line of the lateral margin of lower floor's absorbent core in the change width region.
8. absorbent commodity as claimed in claim 7, it is characterised in that:
Expansion and elongation state nutation apparent time in the absorbent commodity, the three-dimensional gauffer formation with elastomeric element be located at than The position of lateral outer side is leaned in lateral margin in the width certain area in the longitudinally central portion of the absorbent core, and positioned at than the absorption Property core longitudinal rear ends width certain area in the lateral margin of the longer side of lateral length lean on the position of laterally inboard.
9. such as absorbent commodity according to any one of claims 1 to 8, it is characterised in that:
Longitudinal rear end of the central portion extends from longitudinal rear end of the upper strata absorbent core to longitudinally outboard.
10. such as absorbent commodity according to any one of claims 1 to 8, it is characterised in that:
Both longitudinal front-end and back-end of the central portion from longitudinal front and back end of the upper strata absorbent core to Longitudinally outboard extends, and the development length of rear end side is more than the development length of front.
11. such as absorbent commodity according to any one of claims 1 to 10, it is characterised in that:
Have the central portion with the pair of side opening portion in the opening portion alignment area of longitudinal arrangement in the crotch Domain.
12. the absorbent commodity as any one of claim 1~11, it is characterised in that:
Longitudinal rear end of the central portion has prolongs from longitudinal rear end of the upper strata absorbent core to longitudinally outboard The extension stretched, the rear end of the extension more leans on the position at the rear of longitudinal direction positioned at the rear end than the side opening portion.
13. the absorbent commodity as any one of claim 1~12, it is characterised in that:
The width that the upper strata absorbent core is formed as the part by the veutro portion of longitudinal direction when overlooking is bigger than other parts Elongate shape.
14. the absorbent commodity as any one of claim 1~13, it is characterised in that:
The upper strata absorbent core is on the skin opposite face of lower floor's absorbent core, positioned at vertical with lower floor's absorbent core To center compared to slightly bias in the position by the veutro portion.
15. the absorbent commodity as any one of claim 1~14, it is characterised in that:
Including:Absorbent main body with the absorbent core;With configuration the absorbent main body non-skin with respect to surface side Fix the exterior body of the absorbent main body.
16. absorbent commodity as claimed in claim 15, it is characterised in that:
The exterior body is included in the part laterally with retractility.
17. absorbent commodity as claimed in claim 16, it is characterised in that:
In the vertical view, laterally there is partly overlapping for retractility in the central portion and the exterior body.
18. the absorbent commodity as any one of claim 15~17, it is characterised in that:
The absorbent main body includes:Form the positive dough sheet of skin opposite face;Form the back sheet of non-skin opposite face;With between The absorbent core between two pieces.
19. the absorbent commodity as any one of claim 15~18, it is characterised in that:
The exterior body includes the layered product of outer-skin sheet and inner layer piece.
20. absorbent commodity as claimed in claim 19, it is characterised in that:
The outer-skin sheet includes:Constitute the veutro outer-skin sheet of the veutro portion;Constitute the dorsal part outer-skin sheet of the drosal part;And position The crotch outer-skin sheet of the crotch is constituted between two pieces.
21. absorbent commodity as claimed in claim 20, it is characterised in that:
The veutro outer-skin sheet and the dorsal part outer-skin sheet laterally have retractility.
22. the absorbent commodity as described in claim 20 or 21, it is characterised in that:
The crotch outer-skin sheet and the inner layer piece do not have retractility, are non-retractilities.
23. the absorbent commodity as any one of claim 20~22, it is characterised in that:
The veutro outer-skin sheet and the dorsal part outer-skin sheet have in the tensile fibrous layer based on non-elastic fiber Simultaneously it is bonded to the structure of the elastic yarn of wire.
24. the absorbent commodity as any one of claim 20~23, it is characterised in that:
When overlooking, the central portion and the configuring area of any one of the veutro outer-skin sheet and the dorsal part outer-skin sheet Domain is overlapping.
25. the absorbent commodity as any one of claim 1~24, it is characterised in that:
The surface of the absorbent core is coated by clad sheet.
26. the absorbent commodity as any one of claim 1~25, it is characterised in that:
The longitudinal direction of the longitudinal length of the central portion and the ratio of the longitudinal length of the side opening portion, i.e. central portion The longitudinal length of length/side opening portion is more than 1.01 and less than 1.5.
27. the absorbent commodity as any one of claim 1~26, it is characterised in that:
Standoff distance W1 and the side opening portion of the lateral margin along longitudinal direction of lower floor's absorbent core with the side opening portion Ratio, i.e. standoff distance W1/ standoff distances W2 with the standoff distance W2 of the central portion is more than 0.4 and less than 0.8.
28. the absorbent commodity as any one of claim 1~27, it is characterised in that:
The lateral length of the central portion is shorter than longitudinal length, and lateral length is less than 1/5th of longitudinal length.
29. the absorbent commodity as any one of claim 1~28, it is characterised in that:
The lateral length of the side opening portion is shorter than longitudinal length, and lateral length is less than 1/5th of longitudinal length.
CN201580057954.9A 2014-11-10 2015-11-05 Absorbent commodity Expired - Fee Related CN107148259B (en)

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JP2014-227723 2014-11-10
JP2014227723A JP6386883B2 (en) 2014-11-10 2014-11-10 Absorbent articles
PCT/JP2015/081218 WO2016076203A1 (en) 2014-11-10 2015-11-05 Absorbent article

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CN (1) CN107148259B (en)
TW (1) TWI693930B (en)
WO (1) WO2016076203A1 (en)

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CN114788761A (en) * 2021-01-25 2022-07-26 王子控股株式会社 Absorbent article
CN114845679A (en) * 2019-12-23 2022-08-02 花王株式会社 Absorbent body and absorbent article

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