CN104703567B

CN104703567B - Disposable diaper

Info

Publication number: CN104703567B
Application number: CN201380050640.7A
Authority: CN
Inventors: 藤中知子; 福田优子; 佐藤信也; 万田俊明; 一万田俊明
Original assignee: Kao Corp
Current assignee: Kao Corp
Priority date: 2012-10-31
Filing date: 2013-10-01
Publication date: 2019-04-02
Anticipated expiration: 2033-10-01
Also published as: RU2015120553A; CN104703567A; RU2636916C2; TW201424704A; TWI604833B; WO2014069142A1

Abstract

Diaper (1) of the invention, it is separately installed with the side flap (3) extended to X-direction foreign side in the both sides (2S) of the one end of the Y-direction of the absorbent main body (2) of the absorber (23) with liquid retainability, the magic tape (4) that oriented X-direction foreign side extends is installed in the outside portion (3S) along Y-direction of side flap (3).Magic tape (4) is engaged in the single side of side flap (3) via engaging zones (6).Engaging zones (6) include the 1st engaging zones (6S) engaged by bonding agent and are weaker than the 2nd weak engaging zones (6W) or non-set out region (7) of the bond strength of the 1st engaging zones (6S) in more adjacently configure on the outside of X-direction than the 1st engaging zones (6S) and bond strength.

Description

Disposable diaper

Technical field

The present invention relates to a kind of flat type disposable diapers.

Background technique

Always, it is known to which there is the disposable diaper of the side flap extended respectively from the both side edges of absorbent main body.Make For the disposable diaper with side flap (retractility side flap), the applicant is previously proposed just like upper disposable diaper: stretching Non-telescoping portion is arranged in the outside portion along main body longitudinal direction of contracting side flap, will not constitute retractility flank in the non-telescoping portion The elastomeric element of piece and the tab member for constituting side flap (retractility side flap) engage (referring to patent document 1).According to patent text Diaper documented by offering 1 is not engaged above-mentioned elastomeric element and above-mentioned tab member, therefore retractility flank in above-mentioned non-telescoping portion The flexibility of the outside portion of piece improves, and the stability maintenance of above-mentioned elastomeric element also improves.

In addition, the applicant has been previously proposed as follows as the disposable diaper with side flap (retractility side flap) Disposable diaper: be formed with separating in body width direction: the 1st adhered portion is fixed with the hook side band for constituting magic tape With the plate substrate for constituting magic tape；With the 2nd adhered portion, it is fixed with magic tape and retractility waist panel, wherein the 2nd is fixed The lower ora terminalis of the main body longitudinal direction in portion is located at the position more against the top than the lower ora terminalis of the main body longitudinal direction of the 1st adhered portion, and And the lower ora terminalis of the main body longitudinal direction from the plate substrate for constituting magic tape leaves (referring to patent document 2).According to patent document 2 Documented diaper constitutes the hook side band of magic tape not according to the configuration relation of above-mentioned 1st adhered portion and above-mentioned 2nd adhered portion Easily from the plate substrate removing for constituting magic tape, so that use feeling improves.

Existing technical literature

Patent document

Patent document 1: Japanese Patent Laid-Open 2012-135446 bulletin

Patent document 2: Japanese Patent Laid-Open 2012-120663 bulletin

Summary of the invention

However, in the diaper documented by patent document 1, constitute magic tape with substrate and constitute retractility side flap Tab member is fixed via the engaging zones of uniform adhesive strength.In this way, if via uniform adhesive strength engaging zones And fix, then when wearing diaper when stretching magic tape to pull and applying excessive tensile strength to the engaging zones, sometimes It can cause wood destruction and be difficult to maintain the wearing effect of diaper.The wood destruction is easy in the magic tape side of the engaging zones Side edge part generates, and is particularly susceptible in the generation of the both ends of the side edge part of the magic tape side of the engaging zones.In this way, in patent document 1 In documented diaper, there is room for improvement for the viewpoint for maintaining the use feeling of wearing effect of diaper to improve.In addition, In diaper documented by patent document 2, magic tape and retractility waist panel are also via the 2nd adhered portion of uniform adhesive strength And fix, therefore with patent document 1 documented by cause wood destruction sometimes in the same manner as diaper, the viewpoint that use feeling is improved For there is room for improvement.

Therefore, the present invention provides one kind when wearing diaper, and magic tape and side flap are not easy to break because causing wood destruction Damage, thus the disposable diaper that use feeling improves.

In addition, in the diaper documented by patent document 1, the band substrate of magic tape is constituted from constituting retractility waist panel The lateral border of tab member fixed with defined width.In this way, if the lateral border with substrate and tab member is consistently fixed, When wearing diaper, when stretching magic tape to pull and extending retractility waist panel, there is the periphery of retractility waist panel Edge towards non-skin with respect to surface side bending the case where.In the state of to non-skin with respect to surface side bending, wearer will be located at Back side magic tape adhered portion pressing in when the taking piece to carry out fixation of veutro for being located at wearer, such as on diaper It is easy to tangle clothes in habited situation, there is room for improvement for the viewpoint that use feeling improves.Remembered in patent document 2 In the diaper of load, it is fixed with the 2nd adhered portion of the magic tape and retractility waist panel also lateral border with retractility waist panel It is identically formed, therefore with diaper documented by patent document 1 similarly, the presence of the outer peripheral edge portion direction of retractility waist panel The case where non-skin is with respect to surface side bending, there is room for improvement for the viewpoint that use feeling improves.

Therefore, the issue of the present invention is to provide one kind when wearing diaper, and the outer peripheral edge portion of retractility waist panel is easy In towards skin with respect to surface side, thus the disposable diaper that use feeling improves.

Technical teaching for solving the problem was

The present invention is a kind of disposable diaper comprising the absorbent main body of lengthwise, the absorbent main body include that liquid is protected The absorber of holding property, the skin for being configured at the absorber are opposite with the non-skin of the absorber is configured at respect to the positive dough sheet of surface side The back sheet of surface side, and the absorbent main body is divided into veutro portion when wearing positioned at the veutro of wearer, positioned at back side Drosal part and the crotch being configured between the veutro portion and the drosal part, in the one end of the longitudinal direction of above-mentioned absorbent main body Both sides be separately installed with to the retractility side flap extended on the outside of width direction, in the long along main body of the retractility side flap The outside portion of edge direction is installed by the magic tape extended on the outside of oriented width direction.Above-mentioned magic tape is installed on above-mentioned retractility flank The non-skin opposite face of piece.Above-mentioned magic tape is from the lateral border along main body longitudinal direction of above-mentioned retractility side flap to above-mentioned suction The property received main body side interval, and via the 1st engaging zones and above-mentioned retractility flank chip bonding engaged using bonding agent.? Between above-mentioned engaging zones and the lateral border of above-mentioned retractility side flap, throughout being endlong formed continuously for main body longitudinal direction State the non-set out region or leaning on width direction than above-mentioned 1st engaging zones that magic tape and above-mentioned retractility side flap are not engaged Outside adjacently configures and bond strength is weaker than the 2nd weak engaging zones of above-mentioned 1st engaging zones.

Detailed description of the invention

Fig. 1 is will be as the deploying type disposable urine of the present embodiment of (the 1st invention) of the invention from positive dough sheet side The top view of state after cloth expansion.

Fig. 2 is the state that retractility side flap included by the flat type disposable diaper by Fig. 1 is unfolded and makes its elongation Enlarged plan view.

Fig. 3 is the sectional view of the state of the contraction of the I-I line section of Fig. 1.

Fig. 4 is the figure of the state of retractility side flap when indicating to wear the flat type disposable diaper of Fig. 1.

Fig. 5 is will to stretch included by the flat type disposable diaper as the 2nd embodiment of (the 1st invention) of the invention Property side flap expansion and make its extend state enlarged plan view (figure for being equivalent to Fig. 2).

Fig. 6 is the deploying type disposable urine for making the 1st embodiment as (the 2nd invention) of the invention from positive dough sheet side Cloth extends and the top view of the state of expansion.

Fig. 7 is the enlarged plan view of retractility side flap included by the flat type disposable diaper of Fig. 6.

Fig. 8 is the I-I line profile of Fig. 7.

Fig. 9 is the enlarged plan view of the state of retractility side flap when indicating to wear the flat type disposable diaper of Fig. 6.

Figure 10 is flexible included by flat type disposable diaper as the 2nd embodiment of of the invention (the 2nd invention) The enlarged plan view (figure for being equivalent to Fig. 7) of property side flap.

Figure 11 is flexible included by flat type disposable diaper as the 3rd embodiment of of the invention (the 2nd invention) The enlarged plan view (figure for being equivalent to Fig. 7) of property side flap.

Figure 12 is flexible included by flat type disposable diaper as the 4th embodiment of of the invention (the 2nd invention) The enlarged plan view (figure for being equivalent to Fig. 7) of property side flap.

Figure 13 is flexible included by flat type disposable diaper as the 5th embodiment of of the invention (the 2nd invention) The enlarged plan view (figure for being equivalent to Fig. 7) of property side flap.

Figure 14 is flexible included by flat type disposable diaper as the 6th embodiment of of the invention (the 2nd invention) The enlarged plan view (figure for being equivalent to Fig. 7) of property side flap.

Specific embodiment

Hereinafter, it is based on its preferred present embodiment for the disposable diaper of (the 1st invention) of the invention, referring to Fig.1~ Fig. 4 is illustrated.

As shown in Figure 1, the disposable diaper 1 (hereinafter also referred to " diaper 1 ") of present embodiment includes the absorbability of lengthwise Main body 2, the absorbent main body 2 is longer in main body longitudinal direction (Y-direction), and absorber 23 including liquid retainability is configured at The skin of absorber 23 with respect to surface side positive dough sheet 21 and be configured at the back sheet 22 of the non-skin of absorber 23 with respect to surface side, and It is divided into when wearing positioned at the veutro portion A of the veutro of wearer, the drosal part B positioned at back side and configuration in veutro portion A and back side Crotch C between portion B.Diaper 1 as shown in Figure 1, the longitudinal direction (Y-direction) in absorbent main body 2 one end, specifically It is separately installed with the side flap 3 to extension on the outside of width direction (X-direction) in the both sides 2S of drosal part B, in the side flap 3 Outside portion 3S along main body longitudinal direction (Y-direction) installs the magic tape 4 extended on the outside of oriented width direction (X-direction).

Diaper 1 is formed as bilateral symmetry relative to center line CL as shown in Figure 1.Therefore, in the following description, about left and right Symmetrical part, is illustrated mainly for right side.

In addition, in the present specification, so-called " skin opposite face " refers in the both sides for constituting each component of diaper 1 It is configured at the face of the skin side of wearer when wearing, and is face identical with the face of the side " P " in Fig. 3.In addition, so-called " non-flesh Skin opposite face " refer to constitute diaper 1 each component both sides in when wearing towards the opposite side of the skin side of wearer Face, and be face identical with the face of the side " Q " in Fig. 3.

In addition, each direction " Y " shown in figure is the longitudinal direction (main body longitudinal direction) of the absorbent main body 2 of diaper 1, And be the direction parallel with center line CL, each direction " X " shown in figure is that the width direction of the absorbent main body 2 of diaper 1 is (main Body width direction), and be the direction vertical with center line CL.Hereinafter, being specifically illustrated to diaper 1.

As shown in Figure 1, absorbent main body 2 has longer oblong-shaped, and the positive dough sheet including liquid permeability in the Y direction 21, the back sheet 22 of opaque liquid or difficult liquid permeability (including water-repellancy) and the liquid being set between above-mentioned two panels 21,22 are protected The absorber 23 of holding property.As shown in Figure 1, positive dough sheet 21 and back sheet 22 are covered each by the entire of the skin opposite face of absorber 23 The entire surface in face and non-skin opposite face, extends from the periphery of absorber 23, passes through the bonding such as hot melt in the part extended The weldings such as agent or heat sealing and fix.Positive dough sheet 21 is identical as the length of back sheet 22 in the Y direction, but is formed in the X direction It is shorter than back sheet 22.It is identical as absorbent main body 2 that back sheet 22 is formed as plan view shape.

In addition, being configured with sidepiece sheet 24 across positive dough sheet 21 respectively in the both sides 2S along Y-direction of absorbent main body 2. Sidepiece sheet 24, which is arranged, is fixed as whole region of the skin throughout positive dough sheet 21 with respect to the side 2S along Y-direction of surface side.Side Inside (close to center line CL) end of the X-direction of piece 24 becomes free end, and three-dimensional fold formation is with elastomeric element 25 in the side Y It is fixed near the free end of crotch C to the arranging of the state of elongation, when wearing, using the convergent force of the elastomeric element 25, from It is left from positive dough sheet 21 and forms three-dimensional fold in the part that defined width is played in free end.

In addition, the both sides 2S along Y-direction in absorbent main body 2 engages the side extended on the outside of X-direction respectively Piece 24 and back sheet 22 and be formed with wing flap portion.In diaper 1, as shown in Figure 1, leg creases formation with elastomeric element 26 with The wing flap portion for being fixed on crotch C, when wearing, the shape using the convergent force of the elastomeric element 26 is arranged in the state of Y-direction elongation At leg creases.

As described above, absorbent main body 2 drosal part B both sides 2S respectively as shown in Figure 1, installing oriented width side The side flap 3 extended on the outside of to (X-direction) is installed on the outside of oriented width direction (X-direction) in the outside portion 3S of the side flap 3 The magic tape 4 extended.In diaper 1, as shown in figure 3, leading in the non-skin opposite face for the back sheet 22 for being configured at side 2S Various well known methods are crossed, are fixed with side flap in a manner of extending on the outside of from the lateral margin 2S1 of absorbent main body 2 to X-direction 3.Furthermore in diaper 1, side flap 3 is fixed on the non-skin opposite face of back sheet 22, but can also be configured and be fixed in side 2S Between the sidepiece sheet 24 and back sheet 22 of configuration, in addition, being also securable to the skin opposite face of sidepiece sheet 24.In addition, in diaper 1 In, side flap 3 is the retractility side flap for having retractility in X-direction.

As shown in Figures 2 and 3, retractility side flap 3 is to be located at skin lateral plate 31 of the skin with respect to surface side in diaper 1 The elastic portion of multiple filiforms of the fixed state extended in X direction between the non-skin lateral plate 32 of surface side opposite with non-skin is located at Part 33 and formed.In addition, the length of the outside portion 3S along Y-direction of retractility side flap 3, is formed as being longer than following thread gluings Length with 4 Y-direction in engaging zones 6.If narration in detail, as shown in Fig. 2, the retractility side flap 3 of diaper 1 is being opened up Open be it is planar in the state of be formed as rectangle, the skin lateral plate 31 and non-skin lateral plate 32 for constituting retractility side flap 3 also exist Expand into it is planar in the state of, it is identical as retractility side flap 3 to be formed as plan view shape.Multiple elastomeric elements 33 are respectively along urine The X-direction of cloth 1 configures substantially in parallel, extends in X-direction.In addition, multiple elastomeric elements 33 in retractility side flap 3 are being urinated Roughly equal compartment of terrain is arranged along Y-direction in cloth 1 to configure.Furthermore in diaper 1, retractility side flap 3 is formed as rectangle, If but the length of the lateral border along Y-direction of retractility side flap 3, be formed as the side Y in engaging zones 6 for being longer than magic tape 4 To length, then can also be trapezoidal or including curve shape.

As described above, the side flap 3 of diaper 1 is retractility side flap but it is also possible to be the side flap for not having retractility. In addition, the retractility side flap 3 of diaper 1 is to be arranged to fix between two non-woven fabrics (skin lateral plate 31 and non-skin lateral plate 32) The elastomeric elements 33 of multiple filiforms and formed, but retractility side flap 3 is also able to use in two non-woven fabrics (skin lateral plates 31 And non-skin lateral plate 32) between fixed elastomer film is arranged or the mesh being made of elastomer replaces Filamentous elastomeric element 33 Made of complex.Furthermore using Filamentous elastomeric element 33, except its section is roughly circular, square It further include the narrow band-like elastomeric element such as rectangle other than elastomeric element.

In addition, as shown in Figures 2 and 3, constituting the skin of retractility side flap 3 in the retractility side flap 3 of diaper 1 Lateral plate 31 and non-skin lateral plate 32 are formed as identical shape and identical size, but skin lateral plate 31 and non-skin lateral plate 32 Size that can be different for the development length that extends from the lateral margin 2S1 of absorbent main body 2.In this way, using from lateral margin 2S1 to X When the different skin lateral plate 31 of the development length in direction and non-skin lateral plate 32 form retractility side flap 3, retractility side flap 3 Outside portion 3S X-direction on the outside of formed by a skin lateral plate 31 or non-skin lateral plate 32.Therefore, retractility side flap 3 The pliability of outside portion 3S improves.

About the Filamentous elastomeric element 33 for being configured at retractility side flap 3, the flexibility of retractility side flap 3 is mentioned For high or retractility the viewpoint ensured, width (size of Y-direction) or diameter are preferably 0.1mm or more 2mm hereinafter, more Preferably 0.1mm or more 1mm or less.In addition, the number for being configured at the Filamentous elastomeric element 33 of retractility side flap 3 is preferably 1 or more 25 or less left and right, more preferably 3 or more 20 or less.In addition, elongation can from it is existing it is known in suitably select It selects, stress when extending to elongation 100% is 1 elastomeric element 33 of 0.1N or more 1N filiform below preferably in elongation It is arranged and fixes in the state of elongation in 50% or more 300% or less range, and then preferably 100% or more and 250% or less In the range of extend in the state of be arranged fix.Furthermore elongation be elongation and the length of increased amount relative to naturally long Ratio, such as when the elastomeric element of length 10cm is extended to 20cm, elongation 100%.

Furthermore the mesh that fixed elastomer film is arranged or is made of elastomer replaces Filamentous elastomeric element 33 and is formed In the case where retractility side flap 3, the stress of every 25mm width when preferably by elongation to elongation 100% be 3N/25mm with It is arranged and fixes in the state that upper and 25N/25mm mesh below extends in the range of elongation 50% or more 300% or less And it is formed, and then be arranged fixed in the state of elongation in the range preferably below 100% or more 250% and formed.In addition, making Filamentous elastomeric element 33 is replaced with elastomer film or the mesh being made of elastomer and forms the feelings of retractility side flap 3 Condition also includes by the way that elastomer film or mesh are fixed on skin lateral plate 31 and non-skin lateral plate 32 with the arranging of non-elongate state Between and the case where form side flap.In this case, in the next steps, in order to skin lateral plate 31 and non-skin lateral plate 32 The extensibility to width direction is assigned, implements stretch process in the width direction and forms retractility side flap 3.The degree of stretching is The range of used elastomer film or the unbroken degree of mesh, preferably 50% or more 300% range below.

As shown in figure 3, the side flap 3 in diaper 1, which has, is fixed on skin lateral plate 31 for the elastomeric element 33 of multiple filiforms Adhesive layer between non-skin lateral plate 32, the adhesive layer include 2 side of absorbent main body of fixed each elastomeric element 33 The main body side adhesive layer 35 of end side, fix each elastomeric element 33 side flap 3 the outside portion side 3S end side it is outer It side bonds oxidant layer 36 and is configured between the main body side adhesive layer 35 and the outside adhesive layer 36 and fixes two pieces 31,32 Intermediate adhesive layer 37.Region of the intermediate adhesive layer 37 between main body side adhesive layer 35 and outside adhesive layer 36 is set It is equipped with multiple.Intermediate adhesive layer 37 width in diaper 1 is less than any one of above-mentioned two adhesive layer 35,36, and in Between region 30 discontinuously configure in X direction.As shown in Fig. 2, main body side adhesive layer 35, outside adhesive layer 36 and centre are viscous It connects oxidant layer 37 and each elastomeric element 33 to extend along Y-direction across, and the overall length of the Y-direction throughout retractility side flap 3.Cause This, the elastomeric element 33 of multiple filiforms of elongation state is viscous via main body side adhesive layer 35, outside adhesive layer 36 and centre Oxidant layer 37 is connect to be fixed between skin lateral plate 31 and non-skin lateral plate 32.Retractility side flap 3 is formed as following, that is, Main body side is formed in any one of skin lateral plate 31 and non-skin lateral plate 32 or both coating by various well known methods to glue The bonding agent for connecing oxidant layer 35, outside adhesive layer 36 and intermediate adhesive layer 37, make after coating sheet above 31,32 be overlapped and into Thus the Filamentous elastomeric element 33 of multiple elongation states is fixed in row pressurization.

Retractility side flap 3, as shown in figure 3, at the position for being not provided with elastomeric element 33, skin lateral plate 31 and non-skin Lateral plate 32 is directly engaged via main body side adhesive layer 35, outside adhesive layer 36 and intermediate adhesive layer 37 each other.Therefore, Between main body side adhesive layer 35 and the intermediate adhesive layer 37 with its adjoining, between intermediate adhesive layer 37 of adjoining And outside adhesive layer 36 and with its adjoining intermediate adhesive layer 37 between, be respectively formed with skin lateral plate 31 and non-skin side The non-adhesive region 38 that piece 32 is not bonded.Non-adhesive region 38 also in the same manner as adhesive layer 35,36,37 as shown in Figure 2 with All multiple elastomeric elements 33 intersect, and the Y-direction throughout side flap 3 endlong extends in the Y direction.

In the side flap 3 of the diaper 1 formed in mode as above, elastomeric element 33 is with elongation state in main body side bonds Oxidant layer 35, front end side adhesive layer 36 and intermediate adhesive layer 37 are fixed, shrink under natural conditions, such as in the elastomeric element 33 Shown in Fig. 3, multiple pleats are formed on the two sides of side flap 3.Each pleat is prolonged in a manner of intersecting with multiple elastomeric elements 33 along Y-direction It is formed with stretching.As shown in figure 3, be formed in the pleat of side flap 3, be main body side adhesive layer 35 and front end side adhesive layer 36 it Between utilize the contraction of elastomeric element 33, two pieces 31,32 are in each non-adhesive region 38 to grand from the direction that elastomeric element 33 leaves Rising is convex, on the other hand becomes concavity towards elastomeric element 33 in each intermediate adhesive layer 37 and is formed, and has bumps Shape.Such pleat also not exclusively disappears under the wearing effect of diaper.

As shown in Figures 2 and 3, each elastomeric element 33 in retractility side flap 3 being thusly-formed includes passing through main body side The interior side (close to center line CL) of the fixed X-direction of adhesive layer 35 fixes end 33I and is fixed by outside adhesive layer 36 The fixed end 33O of foreign side.

The length of the X-direction of the fixed end 33O of foreign side retractility side flap 3 shown in Fig. 2 under natural conditions, preferably For 3% or more 20% range below of the overall length of the X-direction of Filamentous elastomeric element 33, and then preferably 5% or more 15% Range below.The length of the X-direction of the fixed end 33I of interior side is also identical as the fixed length of X-direction of end 33O of foreign side. Furthermore retractility side flap 3 can also combine in addition to the fixation using adhesive layer 35,36,37 and utilize the molten of heat sealing etc. It is fixed to implement to fix.

In diaper 1, the skin lateral plate 31 of retractility side flap 3 as shown in Figures 2 and 3, has the bullet than multiple filiforms Property component 33 X-direction the fixed end 33O of foreign side to the extension 31S extended on the outside of X-direction, non-skin lateral plate 32 is also the same Extension 32S of the fixed end 33O of foreign side with the X-direction than multiple elastomeric elements 33 to extension on the outside of X-direction.Extension 31S, 32S are engaged via following multiple sealing joint portions 61 each other, and multiple sealing joint portion 61 is by utilizing embossing The crimping of progress is processed or heat sealing, ultrasonic sealing function and formed.The mutual fixation of extension 31S, 32S can also impose viscous Connect agent and replace above-mentioned sealing joint portion 61, just when in use the outside portion 3S of retractility side flap 3 be not easy the viewpoint crimped and Speech, can also combine them.

Magic tape 4 is engaged in the single side of side flap 3 via engaging zones 6, in diaper 1, is only installed on stretches as shown in Figure 3 The non-skin opposite face (face of the side Q) of contracting side flap 3.Specifically, in diaper 1, as shown in figure 3, the side X of magic tape 4 To interior side (close to center line CL) side be only installed on the bullet of the ratio filiform in the non-skin lateral plate 32 for constituting retractility side flap 3 Property component 33 the fixed end 33O of foreign side depend on the extension 32S of X-direction foreign side, and the non-skin for being installed on extension 32S is opposite Face (face of the side Q).Magic tape 4 is biased to the end of the side drosal part B of the Y-direction of retractility side flap 3 in diaper 1 as shown in Figure 2 Portion is nearby mounted.Furthermore in diaper 1, magic tape 4 is only installed on the non-skin opposite face of side flap 3, but can also be only It is installed on the skin opposite face of side flap 3.

If the magic tape 4 for the outside portion 3S for being set to retractility side flap 3 is described in detail, magic tape 4 includes There is the hook side part 42 of multiple engaging protrusions with substrate sheets 41 and in the outside of the X-direction with substrate sheets 41.Magic tape 4 is using Before fold up, when in use as shown in Figure 3 expansion after use.The magic tape 4 of diaper 1 is in the deployed state as shown in Figure 2 In the longer rectangle of X-direction.Magic tape 4 is to be formed as the X-direction with substrate sheets 41 identical with the plan view shape of magic tape 4 Outside stay hook surface parts 42 and formed.Furthermore the outer surface of the veutro portion A in diaper 1, as shown in Figure 1, being provided with makes to glue Piece 5 is taken in 42 fixation of hook side part of cingulum 4.

As shown in Fig. 2, engagement magic tape 4 includes the 1st engagement engaged by bonding agent with the engaging zones 6 of side flap 3 Region 6S and it is weaker than the 1st in adjacently configure on the outside of width direction (direction X) than the 1st engaging zones 6S and bond strength The weak engaging zones 6W in the 2nd of the bond strength of engaging zones 6S.Engaging zones 6 are formed in the area Chong Die with side flap 3 of magic tape 4 The whole region in domain.Engaging zones 6 include the 1st engaging zones 6S and the 2nd weak engaging zones 6W to adjoin each other.1st closes region The weak engaging zones 6W of 6S and the 2nd is formed as the both ends of the Y-direction throughout the magic tape 4 Chong Die with side flap 3.With the 1st bonding land The 2nd domain 6S adjacent weak engaging zones 6W is formed in the lateral border of the 1st engaging zones 6S and retractility side flap 3 as shown in Figure 2 Between 3S1.Herein, the 1st engaging zones 6S is for example with the magic tape 4 when stretching magic tape 4 in X direction and side flap 3 Bond strength of the joint portion to cause the degree of wood destruction to be firmly fixed.In addition, the 2nd weak engaging zones 6W has than the The weak bond strength of the bond strength of 1 engaging zones 6S, such as with magic tape 4 and side when stretching magic tape 4 in X direction The joint portion of fin 3 is with the fixed bond strength of the degree removed before causing wood destruction.If having above-mentioned engagement strong Degree then specific bond strength and is not limited, and the firm engagement of the degree for causing wood destruction of the 1st engaging zones 6S is by force Degree, according to the intensity of substrate is worth and changes, as an example, being spunbond in side flap 3 and the substrate of the engagement side of magic tape 4 In the case where non-woven fabrics, bond strength will be destroyed by material before tensile strength in terms of, be 15N/25mm or more, 40N/25mm Left and right below.

In addition, specific bond strength and being not limited, the bond strength of the preferably the 2nd weak engaging zones 6W connects relative to the 1st The bond strength for closing region 6S is 5% or more 70% hereinafter, more preferably 20% or more 50% or less.

Hereinafter, recording the measurement side of the bond strength of the 1st engaging zones 6S and the engaging zones of the 2nd weak engaging zones 6W Method, but in (the 1st invention) of the invention, as long as the relationship with above-mentioned bond strength, other measuring methods are also without spy It does not limit.

< bond strength measuring method >

To there is the sample of the 1st engaging zones 6S and the 2nd weak engaging zones 6W in the coincidence part of magic tape 4 and side flap 3 It with tensile speed is 300mm/ using the cupping machine RTC-1150 of manufacture (Orientec joint-stock company) as measurement sample Min is stretched, at first the 2nd weak engaging zones 6W removing.Using tensile strength at this time as the engagement of the 2nd weak engaging zones 6W Intensity.The state continued extension is maintained, the tensile strength before the material damage that will cause side flap 3 or magic tape 4 is made For the 1st bond strength 6S.

In the 1st engaging zones 6S of diaper 1, as shown in Fig. 2, being engaged by bonding agent, and it is embossed via utilizing The crimping processing of progress passes through multiple sealing joint portions 61 that heat sealing, ultrasonic sealing function are formed and engages.In diaper 1 The 2nd weak engaging zones 6W in, as shown in Fig. 2, only via using embossing carry out crimping process or pass through heat sealing, ultrasonic wave Sealing and formed multiple sealing joint portions 61 and engage.In this way, the 1st engaging zones 6S passes through bonding agent and envelope in diaper 1 It closes and is formed, the 2nd weak engaging zones 6W is only formed by sealing, therefore the 2nd weak engaging zones 6W has than the 1st engaging zones The weak bond strength of the bond strength of 6S.Furthermore in diaper 1, the higher 1st engaging zones 6S of bond strength passes through bonding agent With sealing and formed, the weak engaging zones 6W of bond strength the lower 2nd only by sealing formed, if but the 2nd weak bonding land Domain 6W has the bond strength weaker than the bond strength of the 1st engaging zones 6S, then such as the 1st engaging zones 6S and the 2nd weak engagement Region 6W can be formed only by bonding agent, and the 1st engaging zones 6S and the 2nd weak engaging zones 6W can also only pass through envelope It closes and is formed.

Specifically, in order to form the 1st engaging zones 6S and the 2nd weak engaging zones 6W only by bonding agent, example So that the adhesive applicating grammes per square metre of the 1st engaging zones 6S is more than the coating grammes per square metre of the 2nd weak bonding region 6W, makes the 1st engagement The coating grammes per square metre of region 6S is 10~50g/m², painting of the coating grammes per square metre of the 2nd weak engaging zones 6W relative to the 1st engaging zones 6S Deposited grammes per square metre is reduced to 50% or less, preferably 20% or less.Alternatively, the 1st engaging zones 6S carries out the coating of bonding agent whole face, 2nd weak engaging zones 6W is coated in width direction being that the coating line of linear bonding agent discontinuously arranges along the long side direction It is multiple and be applied as striated.As the 3rd method, Styrene-Butadiene-Styrene Block Copolymer can also be applied (SBS), styrene-isoprene-styrene block copolymer (SIS) ldpe resin, ethane-acetic acid ethyenyl ester tree Bonding agent of the general thermoplastic resin such as rouge as the coating of the 2nd weak engaging zones 6W applies firm copolyamide hot melt Resin is as the bonding agent for being coated on the 1st engaging zones 6S.

In the case where only forming the 1st engaging zones 6S and the 2nd weak engaging zones 6W by bonding agent, such as can change The 1st engaging zones 6S is applied by entire surface, discontinuously applies the coating method of bonding agent as the 2nd weak engaging zones 6W, or is become The coating amount of more bonding agent and formed.

In addition, forming the 1st engaging zones 6S and the 2nd weak engaging zones only passing through the sealings such as heat sealing or ultrasonic sealing function In the case where 6W, such as can be by the 1st engaging zones 6S in the skin lateral plate 31 or non-skin lateral plate 32 with composition side flap 3 It is sealed and is formed under the conditions of the temperature that the fusing point of fiber or the fusing point for constituting the fiber with substrate sheets 41 match, by the 2nd Weak engaging zones 6W is on low 0~20% left side of fusing point of the fiber than the skin lateral plate 31 or non-skin lateral plate 32 that constitute side flap 3 It is sealed and is formed under the conditions of right or low by 0~20% or so the fusing point than constituting the fiber with substrate sheets 41 temperature.

In addition, can also be formed by the crimping carried out using embossing processing for forming the 1st engaging zones 6S and the 2nd The sealing portion of weak engaging zones 6W.For example, in skin lateral plate 31 or non-skin lateral plate by knurling rolls temperature adjustment to composition side flap 3 In the state of the fusing point temperature below of the fiber of fusing point and composition with substrate sheets 41 of 32 fiber, in each component parts After stacking, embossing processing is implemented to part corresponding with the weak engaging zones 6W of the 1st engaging zones 6S and the 2nd.Thus, it is possible to shapes At the sealing portion formed using crimping.

As shown in Fig. 2, the engaging zones 6 including the 1st engaging zones 6S and the 2nd weak engaging zones 6W have multiple small shapes Sealing joint portion 61 regularly in the Y direction arrange made of sealing joint portion group 61G, seal joint portion group 61G in X-direction Be arranged with it is multiple, form the adjacent sealing joint portion 61,61 of another sealing joint portion group 61G each other with X-direction not side by side Mode be in staggered configuration.If narration in detail, as shown in Fig. 2, the sealing joint portion 61 of diaper 1 includes having relative to Y-direction 2nd sealing at the 1st sealing joint portion 611 of the lengthwise of angle and the lengthwise for keeping direction opposite with the 1st sealing joint portion 611 engages Portion 612.Herein, so-called to keep direction opposite, it is to instigate to extend parallel to the 1st sealing joint portion 611 relative to center line CL The 1st imaginary line IL1 (referring to Fig. 2) balanced configuration imaginary 1st sealing joint portion 611 relative to Y-direction angle, with The angle relative to Y-direction at the 2nd sealing joint portion 612 is unanimously identical angle.As shown in Fig. 2, the sealing of diaper 1 engages Portion group 61G include the 1st sealing joint portion 611 regularly arrange at spaced intervals in the Y direction the 1st sealing joint portion group 611G and The 2nd sealing joint portion group 612G that 2nd sealing joint portion 612 regularly arranges at spaced intervals in the Y direction.Moreover, diaper 1 Engaging zones 6, as shown in Fig. 2, the 1st sealing joint portion group 611G and the 2nd sealing joint portion group 612G are alternately respectively arranged in X-direction Two row of column is arranged with the 1st sealing joint portion group 611G and the 2nd sealing in the 1st engaging zones 6S and the 2nd weak engaging zones 6W respectively Joint portion group 612G.Therefore, another sealing joint portion group 61G (the 1st sealing joint portion group 611G or the 2nd sealing joint portion are formed 612) the 1st adjacent sealing joint portion 611 does not configure in X-direction in parallel position and in Y with the 2nd sealing joint portion 612 Direction is in staggered configuration.

2nd weak engaging zones 6W is in diaper 1, as shown in Fig. 2, including multiple 61 (the 1st sealing joint portions of sealing joint portion 611 and the 2nd sealing joint portion 612) and be configured at adjacent sealing joint portion 61 (the 1st sealing joint portion 611 and the 2nd seal connects Conjunction portion 612) between non-sealing joint portion 62.Specifically, the 2nd weak engaging zones 6W is as shown in Figure 2 in diaper 1 It is only engaged via multiple sealing joint portions 61, therefore adjacent sealing joint portion 61 (the 1st weld portion 611 and the 2nd weld portion 612) become the disengaged portion 62 that magic tape 4 and side flap 3 are not engaged each other.In this way, in the 2nd weak engaging zones 6W tool There is disengaged portion 62, therefore flexibility is excellent.

Furthermore as described above, the 1st engaging zones 6S is in diaper 1, as shown in Figure 2 via multiple sealing joint portions 61 and Engagement, and engaged via the bonding agent joint portion 63 formed using bonding agent.Bonding agent joint portion 63 is in X-direction to include The width of the width of two column sealing joint portion group 61G (the 1st sealing joint portion group 611G and the 2nd sealing joint portion group 612G), with Center line CL is parallel, the endlong formation of the Y-direction of magic tape 4 is continuously spread along Y-direction.Furthermore the bonding agent of diaper 1 connects Conjunction portion 63 be formed as include two column sealing joint portion group 61G width width, but can also be formed as with two column sealing engage The width of the equivalent width of portion group 61G.In this way, in the 1st engaging zones 6S, adjacent sealing joint portion 61 (the 1st sealing joint portion 611 and the 2nd sealing joint portion 612) it is fixed each other by bonding agent, therefore thread gluing is not present in the 1st engaging zones 6S The disengaged portion 62 being not engaged with 4 with side flap 3.In the 1st engaging zones 6S, magic tape 4 and retractility side flap 3 are by melting It connects and is fixed with bonding agent, therefore adhesive strength improves compared with the 2nd weak engaging zones 6W.

In addition, the sealing joint portion 61 of a part in multiple weld portions 61 is in diaper 1, across retractility side flap 3 Along main body longitudinal direction (Y-direction) lateral border 3S1 and extend on the outside of width direction (X-direction).Specifically, being configured at Composition the 2nd in the 1st sealing joint portion group 611G of 2 weak engaging zones 6W and the 2nd sealing joint portion group 612G seals joint portion Multiple 2 sealings joint portion 612 of group 612G respectively from the 2nd weak engaging zones 6W cross the lateral border 3S1 of side flap 3 and to X Extend on the outside of direction.In other words, multiple 2nd sealings for being configured at the 2nd weld portion group 612G of composition of the 2nd weak engaging zones 6W connect Configure to lateral border 3S1 of the conjunction portion 612 across side flap 3.In this way, the sealing of a part in above-mentioned multiple sealing joint portions 61 connects Conjunction portion 61 steps up the lateral border 3S1 along main body longitudinal direction for stating side flap 3 and extends to width direction foreign side, thus inhibits edge Magic tape 4 from the boundary that the lateral border 3S1 of side flap 3 extends, side flap 3 is from 4 protrusion of magic tape.

The retractility side flap 3 in the region Chong Die with magic tape 4 of retractility side flap 3 (engaging zones 6) in the Y direction Length is longer than the length in the Y direction of the magic tape 4 of the overlapping region (engaging zones 6).Herein, it is so-called it is above-mentioned in the Y direction Length, refer to the portion of the retractility side flap 3 including the region Chong Die with magic tape 4 of retractility side flap 3 (engaging zones 6) Point or the part of magic tape 4 in widest position on length.Improve operability and to skin phase Opposite side acts on for making the viewpoint of its inward force, the retractility side flap 3 in the region (engaging zones 6) of above-mentioned overlapping Length in the Y direction be preferably 1.2 times of the length in the Y direction of the magic tape 4 in the region (engaging zones 6) of the overlapping with Upper 3.5 times hereinafter, be preferably 1.4 times or more 3.0 times or less in turn.

For the viewpoint of adhesive strength, the region (engaging zones 6) of above-mentioned overlapping is preferably with respect to vertical view nature Under retractility side flap 3 when retractility side flap 3 the gross area be 10% or more 50% range below, and then preferably 10% or more 40% range below.

The 1st engaging zones 6S preferably area of its area and the 2nd weak engaging zones 6W is comparably same degree or greater than the 2nd The area of weak engaging zones 6W.

For the viewpoint that lossless wearing feeling and adhesive strength improve, the 1st engaging zones 6S is preferably with respect to above-mentioned heavy The area in folded region (engaging zones 6) be 40% or more 80% range below, and then preferably 50% or more and 70% with Under range.

For identical viewpoint, the region (engaging zones 6) of the 2nd weak engaging zones 6W preferably with respect to above-mentioned overlapping Area is 20% or more and 60% range below, and then preferably 30% or more and 50% range below.

The shape of weld portion 61 (the 1st weld portion 611 and the 2nd weld portion 612) as sealing joint portion, has no special limit System, in addition to the ellipse of lengthwise as diaper 1, or any such as circle, diamond shape, triangle, polygon Shape.For the viewpoint that lossless wearing feeling and adhesive strength improve, 1 sealing joint portion 61 (1 the 1st sealing engagement Portion 611 or 1 the 2nd sealing joint portion 612) sealing pattern area be preferably 2mm²Above and 30mm²Hereinafter, being preferably in turn 2mm²Above and 20mm²Below.For identical viewpoint, the 1st adjacent weld portion 611 of Y-direction or adjacent the 2nd envelope of Y-direction Conjunction joint portion 612 is mutual to be preferably spaced 1mm or more and 8mm hereinafter, being in turn preferably 6mm or less.With regard to identical viewpoint Speech, (the 1st sealing joint portion 611 and the 2nd seals joint portion 612 at the immediate mutual interval in adjacent sealing joint portion 61 Interval) it is preferably 1mm or more and 8mm hereinafter, being in turn preferably 6mm or less.In addition, for identical viewpoint, sealing engagement The number that portion 61 (the 1st sealing joint portion 611 and the 2nd seals joint portion 612) is configured is preferably 1/cm²Above and 16/ cm²Hereinafter, being in turn preferably 2/cm²Above and 10/cm²Below.In turn, for identical viewpoint, multiple sealing engagements Region of the total sealing pattern area in portion 61 (the 1st sealing joint portion 611 and the 2nd seals joint portion 612) relative to above-mentioned overlapping The ratio of the area of (engaging zones 6) is preferably 10% or more and 70% hereinafter, being in turn preferably 10% or more and 50% or less.

In diaper 1, as shown in Fig. 2, the end that magic tape 4 is biased to the side drosal part B of side flap 3 nearby is mounted. Therefore, in the case where magic tape 4 are stretched when wearing, being configured near width direction (X-direction) outside in multiple weld portions 61 The tilt angle of side and 1 sealing joint portion 61 near the side crotch C, the 2nd imaginary line with connection intersection point PD1 and intersection point PD2 The tilt angle of IL2 is substantially uniform, wherein intersection point PD1 is the intersection point of the side crotch C of side flap 3 and magic tape 4, and intersection point PD2 is The intersection point of the side crotch C of side flap 3 and absorbent main body 2.That is, in the case where stretching magic tape 4 when worn in diaper 1, The composition the 2nd for being configured at the 2nd weak engaging zones 6W of engaging zones 6 seals multiple 2nd sealings joint portion of joint portion group 612G The tilt angle for being configured at 1 the 2nd weld portion 612C near the side crotch C in 612, the tilt angle with the 2nd imaginary line IL2 It is substantially uniform.In diaper 1, it is respectively arranged at the composition of the 1st engaging zones 6S and the 2nd weak engaging zones 6W of engaging zones 6 The tilt angle at multiple 2nd sealings joint portion 612 of the 2nd sealing joint portion group 612G is all with the 2nd sealing joint portion 612C's Tilt angle is consistent.Furthermore so-called the 2nd weld portion 612C being configured near the side crotch C refers to that more than half of its area is covered The sealing joint portion of the weak engaging zones 6W of lid the 2nd.

In addition, in diaper 1, as shown in figure 3, the outside of the elastomeric element 33 in engaging zones 6 and retractility side flap 3 The fixed end 33O of foreign side a part overlapping.If narration in detail, in diaper 1, the 1st engaging zones 6S of engaging zones 6 A part with the fixed end 33O of foreign side of elastomeric element 33 is to form the outside of the fixed end 33O of foreign side of elastomeric element 33 A part overlapping of adhesive layer 36.The overlapping area of 1st engaging zones 6S and outside adhesive layer 36 is preferably relative to outer The area of side bonds oxidant layer 36 is 5% or more and 50% range below, and then preferably 15% or more and 30% model below It encloses.

When wearing diaper 1, magic tape 4 is unfolded, with pull stretch magic tape 4 and make side flap 3 extend in the state of, will The pressing of hook side part 42 of the magic tape 4 is fixed on taking piece 5.

The constituent material of diaper 1 is illustrated.

It, can respectively with no particular limitation as positive dough sheet 21, the back sheet 22, absorber 23 for constituting absorbent main body 2 Use the material etc. for being always used for the absorbent commodities such as disposable diaper, sanitary napkin.For example, as positive dough sheet 21, energy Enough using the non-woven fabrics or three-dimensional apertured film etc. of hydrophily and liquid permeability.As back sheet 22, it is able to use opaque liquid or difficulty Film or non-woven fabrics (such as spunbond-melt blown-spunbond non-woven fabrics, hot-wind nonwoven cloth, spun-bonded non-woven fabrics, the spun lacing nonwoven of liquid permeability Cloth, needle punched non-woven fabrics etc.).Alternatively, can also be used as the composite sheet for being laminated them come using.In addition, as absorber 23, the aggregate for being able to use the fibers such as the clad sheet cladding paper pulp fiber constituted with water penetration thin paper or non-woven fabrics (can also be with For non-woven fabrics) or make the material etc. that absorbent core made of water-absorbent polymer particles is kept in the aggregate of above-mentioned fiber.Make For the sidepiece sheet 24 for constituting three-dimensional shield, it is able to use film, non-woven fabrics, fabric or their laminates etc..

As the skin lateral plate 31 and non-skin lateral plate 32 for constituting retractility side flap 3, can be used without special restrictions The always various sheet materials for absorbent commodities such as disposable diaper, sanitary napkins.

For example, being able to use non-woven fabrics, fabric, film or their laminates as skin lateral plate 31, non-skin lateral plate 32 Deng.

As the elastomeric element 33 of filiform, the elastomeric element 25 for constituting three-dimensional shield, leg for constituting retractility side flap 3 Elastomeric element 26 is able to use by natural rubber, polyurethane, polystyrene-polyisoprene copolymer, polystyrene-poly fourth The filiform of the compositions such as the polyethylene-alphaolefins copolymers such as diene copolymers, ethyl acrylate-ethylene or the elastomeric element of threadiness.Just For the viewpoints such as manufacturing cost or the summary of manufacturing process, the multiple elastomeric elements 33 for being configured at retractility side flap 3 are preferred It is configured for the material of identical type with identical elongation.

As the main body side adhesive layer 35, outside adhesive layer 36 and intermediate bonding agent to form retractility side flap 3 The bonding agent of layer 37 is representative for engaging the preferred material of the bonding agent between each component, can be enumerated: amorphous polyolefins, second Alkene-vinyl acetate copolymer (EVA), vinyl-acrylate copolymer (EEA), s-B-S block are total Polymers (SBS), styrene-isoprene-styrene block copolymer (SIS), styrene-ethylene-butylene-styrene block are total The mixing of the thermoplastic polymers and they such as polymers (SEBS), styrene-ethylene/propylene-styrene block copolymer (SEPS) Object etc..The preferred heat molten type of bonding agent.

Furthermore formed the application pattern of the bonding agent of each adhesive layer 35,36,37 it is preferable to use spray gun, apply the conducts such as rifle Adhesive applicating machine carries out so-called whole face coating, but as adhesive applicating machine, be also able to use bead spray gun (bead gun), The progress such as spiral spray gun, Ω shape spray gun, transfer roll are linear, helical form, Ω shape, dotted etc. pattern coating.

In the case where side flap 3 is not retractility side flap, can be used without special restrictions always for disposable The various sheet materials of the absorbent commodities such as diaper, sanitary napkin, such as it is able to use non-woven fabrics, film or their laminates Deng.

As long as forming the hook side part 42 of magic tape 4 and with substrate sheets 41 usually to can be used for the absorbabilities object such as disposable diaper The material of product, then can be used without special restrictions.For example, being able to use " Magic Tape (registrar as hook side part 42 Mark) " (manufacture of KURARAY company), " Quicklon (registered trademark) " (manufacture of YKK company), " Magi Cloth (registrar Mark) " sunny side component etc. in (manufacture of Kanebo Bell-Touch company) etc..As band substrate sheets 41, it is able to use poly- second The synthetic resin such as alkene, polypropylene or polyethylene terephthalate and composite material including two or more above-mentioned synthetic resin Piece or non-woven fabrics etc..

To (hereinafter also referred to " the urine of disposable diaper 1 for using the above-mentioned present embodiment as (the 1st invention) of the invention Cloth 1 ") when function and effect be illustrated.

Diaper 1, as shown in Figures 2 and 3, the engaging zones 6 for engaging magic tape 4 and side flap 3 are by being connect by bonding agent The 1st engaging zones 6S that closes and strong in adjacently configured on the outside of width direction (X-direction) than the 1st engaging zones 6S and engagement The 2nd weak engaging zones 6W for spending the bond strength for being weaker than the 1st engaging zones 6S is formed.Therefore, as shown in figure 4, wearing diaper When to pull and stretch magic tape 4 and apply excessive tensile strength to engaging zones 6 in the case where, leaned on than the 1st engaging zones 6S 2nd weak engaging zones 6W of the side lateral border 3S1 of side flap 3, magic tape and side flap be not to cause the degree of wood destruction to be held It is easily peelable.In this way, the 2nd weak engaging zones 6W of the side lateral border 3S1 of side flap 3 is easily peeled off, therefore in the 1st engaging zones 6S In, magic tape 4 and side flap 3 are not likely to produce wood destruction and damaged, are able to maintain that the wearing effect of diaper 1, use feeling raising.

In addition, diaper 1, as shown in Figures 2 and 3, due to being leaned on the outside of width direction (X-direction) than the 1st engaging zones 6S Adjacently be configured with the 2nd weak engaging zones 6W, therefore diaper 1 when wearing or in use, the lateral border 3S1 of side flap 3 not Easily curling or bending, use feeling improve.In particular, as shown in Figures 2 and 3, side flap 3 is retractility flank in diaper 1 Piece, and then magic tape 4 is only installed on the non-skin opposite face (face of the side Q) of retractility side flap 3, therefore further plays above-mentioned Effect.In addition, due to being configured with the 2nd weak engaging zones 6W on the outside of width direction (X-direction) than the 1st engaging zones 6S, because In the manufacture conveying of diaper 1, the lateral border 3S1 of side flap 3 is also not easy curling or bending for this, and production efficiency improves.

In addition, diaper 1, as shown in Figures 2 and 3, the 1st engaging zones 6S are formed by bonding agent and sealing, the 2nd weak engagement Region 6W only passes through sealing and is formed.In this way, not applied being configured on the outside of width direction (X-direction) than the 1st engaging zones 6S The 2nd weak engaging zones 6W of bonding agent is applied, therefore when coating bonding agent forms the 1st engaging zones 6S, exposes side flap 3 Lateral border 3S1 and be difficult to be applied to magic tape 4.So, it is difficult to the case where generating adhesive applicating to magic tape 4, therefore be not easy Engagement with the engagement of other component or to skin or clothes caused by the spilling because of bonding agent is generated, use feeling further mentions It is high.

In addition, diaper 1, as shown in Fig. 2, the engaging zones 6 including the 1st engaging zones 6S and the 2nd weak engaging zones 6W A part sealing joint portions 61 in multiple sealing joint portions 61 cross the lateral border 3S1 of side flap 3 and to the width direction (side X To) outside extension.In other words, the composition the 2nd for being configured at the 2nd weak engaging zones 6W seals multiple 2nd envelopes of joint portion group 612G It configures with closing lateral border 3S1 of the joint portion 612 across side flap 3.Therefore, in diaper 1 when wearing or in use, side flap 3 Lateral border 3S1 is less susceptible to curling or bending, use feeling further increase.

In addition, diaper 1, as shown in Fig. 2, the end that magic tape 4 is biased to the side drosal part B of side flap 3 is nearby mounted, In the case where stretching magic tape 3 when wearing, it is configured at the 2nd weld portion group of composition of the 2nd weak engaging zones 6W of engaging zones 6 The tilt angle and the 2nd for being configured at 1 the 2nd weld portion 612C near the side crotch C in multiple 2nd weld portions 612 of 612G The tilt angle of imaginary line IL2 is substantially uniform.In the case where stretching magic tape 3 when wearing, to along the 2nd imaginary line IL2's Direction applies load.The 2nd weld portion 612C near the side crotch C in the position for being located at the starting point as the load produces stripping From in the case where, tilt angle and the 2nd imaginary line IL2 are substantially uniform, therefore remove required workload and maximize.Magic tape 4 With the not cracky of side flap 3, it is able to maintain that the wearing effect of diaper 1, use feeling improves.

In addition, diaper 1, as shown in figure 3, foreign side's fixing end of the 1st engaging zones 6S of engaging zones 6 and elastomeric element 33 A part of portion 33O is to form a part overlapping of the outside adhesive layer 36 of the fixed end 33O of foreign side of elastomeric element 33. That is, magic tape and elastomeric element 33 directly link.Therefore, when wearing stretch magic tape 4 and apply impact in the case where, also because A possibility that elastomeric element 33 is buffered and is not likely to produce destruction in engaging zones 6, damages use feeling reduction.

The disposable diaper of (the 1st invention) of the invention, can be appropriate not by 1 any restrictions of diaper of above-mentioned present embodiment Change.

For example, as shown in Fig. 2, side flap 3 has retractility, but may be non-in the diaper 1 of above embodiment Retractility.In addition, magic tape 4 is only installed on the non-skin opposite face (face of the side Q) of side flap 3, but it can also only be installed on side The skin opposite face (face of the side P) of fin 3.

In addition, in the diaper 1 of above embodiment, as shown in Fig. 2, one in multiple weld portions 61 of engaging zones 6 Partial weld portion 61 is crossed the lateral border 3S1 of side flap 3 and is extended to width direction (X-direction) foreign side, and however, you can also not prolong It stretches.

In addition, in the diaper 1 of above embodiment, as shown in Fig. 2, being configured at the 2nd weld portion of composition of engaging zones 6 The tilt angle of multiple 2nd weld portions 612 of group 612G and the tilt angle of the 2nd imaginary line IL2 are substantially uniform, however, you can also not Unanimously.

In addition, in the diaper 1 of above embodiment, as shown in Fig. 2, the elastomeric element in engaging zones 6 and side flap 3 A part overlapping of the fixed end 33O of the foreign side in 33 outside, but can also be configured at end 33O more fixed than foreign side by width side To (X-direction) outside.

In addition, in the diaper 1 of above embodiment, as shown in Fig. 2, being configured at the 2nd weld portion of composition of engaging zones 6 The tilt angle of multiple 2nd weld portions 612 of group 612G is all identical, and however, you can also not identical.For example, shown in Fig. 5 is another In the diaper 1A of one embodiment, in addition to the form of diaper 1, in the case where magic tape 3 are stretched when wearing, only multiple weldings Being configured on the outside of the width direction (X-direction) in portion 61 and near 1 sealing joint portion 61 of the side drosal part B, i.e. configuration In in multiple 2nd sealings joint portion 612 that the composition the 2nd of the 2nd weak engaging zones 6W of engaging zones 6 seals joint portion group 612G Be configured at the tilt angle near 1 the 2nd of the side drosal part B sealing joint portion 612B, with connection intersection point PU1 and intersection point PU2 The 3rd imaginary line IL3 tilt angle it is substantially uniform, wherein intersection point PU1 is the side drosal part B of side flap 3 Yu magic tape 4 Intersection point, intersection point PU2 are the intersection points of the side drosal part B of side flap 3 and absorbent main body 2.Furthermore it is so-called to be configured near drosal part 2nd sealing joint portion 612B of the side B refers to that more than half of its area is covered in the sealing joint portion of the 2nd weak engaging zones 6W.

It is negative to applying along the direction of the 2nd imaginary line IL2 in the case where magic tape 3 are stretched when wearing in diaper 1A It carries, and also applies load to along the direction of the 3rd imaginary line IL3.However, be located at as the load starting point position near 2nd weld portion 612C of the side crotch C and near the side drosal part B the 2nd respective tilt angle of weld portion 612B with the 2nd imagination The tilt angle of line IL2 and the tilt angle of the 3rd imaginary line IL3 are substantially uniform.Therefore, magic tape 4 and side flap 3 are less fragile Damage, is able to maintain that the wearing effect of diaper 1A, use feeling further increases.

Hereinafter, its preferred 1st embodiment is based on for the disposable diaper of (the 2nd invention) of the invention, referring to Fig. 6 ~Fig. 9 is illustrated.

As shown in fig. 6, the disposable diaper 1B (hereinafter also referred to " diaper 1B ") of present embodiment is protected from including liquid The retractility flank that the both sides 2S of the drosal part B of the rectangular absorbent main body 2 of the absorber 23 of holding property is each extended over out The outside portion 3S along main body longitudinal direction (Y-direction) of piece 3, is equipped with magic tape 4.

As shown in fig. 6, diaper 1B is formed as bilateral symmetry relative to center line CL.Therefore, in the following description, about Symmetrical part, is illustrated mainly for right side.

In addition, in the present specification, so-called " skin opposite face " refers in the both sides for constituting each component of diaper 1B The skin side that wearer is configured at when wearing face, and be face identical with the face of the side " P " in Fig. 8.In addition, so-called " non-skin opposite face " refer to constitute diaper 1B each component both sides in when wearing towards the skin side of wearer Opposite side face, and be face identical with the face of the side " Q " in Fig. 8.

In addition, each direction " Y " shown in figure is longitudinal direction (the main body long side side of the absorbent main body 2 of diaper 1B To), it is the direction parallel with center line CL, each direction " X " shown in figure is the width direction of the absorbent main body 2 of diaper 1B (body width direction) is the direction vertical with center line CL.Hereinafter, being specifically illustrated to diaper 1B.

As shown in fig. 6, absorbent main body 2 has longer oblong-shaped in the Y direction, and positioned at wearer when including wear Veutro veutro portion A, positioned at wearer back side drosal part B and positioned at the crotch C of crotch part.Retractility side flap 3,3 Both sides 2S, 2S along Y-direction of absorbent main body 2 in drosal part B with respectively from the both side edges 2S1 of absorbent main body 2, 2S1 is installed to the mode that X-direction outside is extended.

As shown in fig. 6, absorbent main body 2 is the component of longer lengthwise in the Y direction comprising the absorption of liquid retainability Body 23 is configured at the positive dough sheet 21 of the skin of absorber 23 with respect to surface side and is configured at the non-skin of absorber 23 with respect to surface side Outer layer composite sheet, and it is divided into veutro portion A, the drosal part positioned at back side and the crotch that is configured between the veutro portion and the drosal part Portion.That is, absorbent main body 2 includes positive dough sheet 21, opaque liquid or the difficult liquid permeability (including water-repellancy) of liquid permeability as shown in Figure 6 Outer layer composite sheet 22 and the liquid retainability being set between above-mentioned two panels 21,22 absorber 23.As shown in fig. 6, positive dough sheet 21 and outer layer composite sheet 22 be covered each by absorber 23 skin opposite face entire surface and non-skin opposite face entire surface, from The periphery of absorber 23 extends, and in the part extended, is fixed by weldings such as bonding agents or heat sealing such as hot melts.Front Piece 21 is identical as the length of outer layer composite sheet 22 in the Y direction, but is formed in the X direction shorter than outer layer composite sheet 22.Outer layer Composite sheet 22 is formed as identical as 2 plan view shape of absorbent main body.

In addition, being configured with sidepiece sheet 24 across positive dough sheet 21 in the side 2S along Y-direction of absorbent main body 2.Sidepiece sheet 24 arrangings are fixed as spreading side 2S whole region along Y-direction of the skin with respect to surface side of positive dough sheet 21.The side X of sidepiece sheet 24 To interior side (close to center line CL) end become free end, the state extended in the Y direction near the free end of crotch C is matched If three-dimensional fold formation elastomeric element 25 is fixed with, when wearing, through the convergent force of the elastomeric element 25, from free end It is left from positive dough sheet 21 and forms three-dimensional fold in the part of defined width.

In addition, engaging the sidepiece sheet that the foreign side of oriented X-direction extends in the side 2S along Y-direction of absorbent main body 2 24 and outer layer composite sheet 22 and be formed with wing flap portion.In diaper 1B, as shown in fig. 6, leg creases, which are formed, uses elastomeric element 26 Pass through the convergent force of the elastomeric element 26 when wearing with the wing flap portion that crotch C is fixed in the state arranging extended in the Y direction And form leg creases.

As shown in fig. 6, both sides 2S, 2S of the drosal part B in absorbent main body 2, are separately installed with to width direction (X Direction) the retractility side flap 3,3 that extends of foreign side, it is equipped on the outside of the width direction (X-direction) of retractility side flap 3,3 Magic tape 4.If being illustrated referring to diaper 1B to retractility side flap 3 and the configuration relation of magic tape 4, as shown in fig. 7, Draw intersection point PU1 and retractility side flap 3 and magic tape 4 above connection absorbent main body 2 and the Y-direction of retractility side flap 3 Y-direction above intersection point PU2 imaginary line IL2 when, with have top in the Y direction cross imaginary line IL2 region T1 side Formula is equipped with magic tape 4 in retractility side flap 3.Alternatively, as shown in fig. 7, drawing connection absorbent main body 2 and retractility The imaginary line of the Y-direction of intersection point PD1 and retractility side flap 3 and magic tape 4 lower section intersection point PD2 below the Y-direction of side flap 3 When IL3, in a manner of having and cross the region T2 of imaginary line IL3 below in the Y direction, it is equipped in retractility side flap 3 viscous Cingulum 4.

Furthermore in diaper 1B, as shown in fig. 7, to have the region T1 crossed above in the Y direction and in the Y direction lower section The mode in two regions of the region T2 crossed, fixed retractility side flap 3 and magic tape 4, but as long as to have in the Y direction The mode of any one in the region T1 that just the crosses and region T2 that lower section is crossed in the Y direction, fixed retractility side flap 3 and thread gluing Band 4.

In diaper 1B, as shown in figure 8, passing through in the non-skin opposite face for the outer layer composite sheet 22 for being configured at side 2S Various well known methods, are fixed in such a way that both side edges 2S1,2S1 from absorbent main body 2 are extended to X-direction foreign side and stretch Contracting side flap 3.Furthermore in diaper 1B, retractility side flap 3 is fixed on the non-skin opposite face of outer layer composite sheet 22, but It can also configure and be fixed between the sidepiece sheet 24 and outer layer composite sheet 22 of side 2S configuration.

Retractility side flap 3 is to be located at the skin skin lateral plate 31 of surface side relatively in diaper 1B and be located at non-skin phase Fixed between the non-skin lateral plate 32 of opposite side X-direction elongation state multiple elastomeric elements 33 and formed.In addition, flexible The length of the outside portion 3S along main body longitudinal direction (Y-direction) of property side flap 3, be formed as being longer than following magic tapes 4 the 1st The length of the main body longitudinal direction (Y-direction) of engaging zones 6.If narration in detail, as shown in fig. 7, the retractility in diaper 1B Side flap 3 in the state of expanding into planar be rectangle, if retractility side flap 3 along the main body longitudinal direction (side Y To) lateral border length, be formed as the length for the main body longitudinal direction (Y-direction) in the 1st engaging zones 6 for being longer than magic tape 4 Degree then or shape trapezoidal or including curve constitutes the skin lateral plate 31 and non-skin lateral plate 32 of retractility side flap 3 It is again formed as identical as 3 plan view shape of retractility side flap in the state of expanding into planar.Multiple elastomeric elements 33 are distinguished X-direction along diaper 1B configures, and extends in X-direction.In addition, multiple elastomeric elements 33 in retractility side flap 3 are in diaper 1B In roughly equal compartment of terrain configuration is set in the Y direction.

As described above, the retractility side flap 3 of diaper 1B is in two non-woven fabrics (skin lateral plate 31 and non-skin lateral plate 32) it is arranged the elastomeric element 33 of fixed multiple filiform between and formation, but retractility side flap 3 is able to use in two nonwovens The mesh that fixed elastomer film is arranged between cloth (skin lateral plate 31 and non-skin lateral plate 32) or is made of elastomer replaces silk Complex made of the elastomeric element 33 of shape.It is big except including section furthermore using Filamentous elastomeric element 33 It causes other than round, square shape component, further includes the narrow band-like component such as rectangle.

In addition, as shown in Figure 7 and Figure 8, constituting the flesh of retractility side flap 3 in the retractility side flap 3 of diaper 1B Skin lateral plate 31 and non-skin lateral plate 32 are formed as identical shape and identical size, but skin lateral plate 31 and non-skin lateral plate 32 Or the size that the development length that extends from the lateral margin 2S1 of absorbent main body 2 is different.In this way, prolonging using from lateral margin 2S1 When the different skin lateral plate 31 of the development length of stretching and non-skin lateral plate 32 form retractility side flap 3, retractility side flap 3 Outside portion 3S X-direction on the outside of formed by a skin lateral plate 31 or non-skin lateral plate 32.Therefore, retractility side flap 3 The pliability of outside portion 3S improves.

It is configured at the Filamentous elastomeric element 33 of retractility side flap 3, the flexibility of retractility side flap 3 is improved and stretched For the viewpoint of contracting ensured, width (size of Y-direction) or diameter are preferably 0.1mm or more and 2mm hereinafter, more preferably For 0.1mm or more and 1mm or less.In addition, the number for being configured at the Filamentous elastomeric element 33 of retractility side flap 3 is preferably 1 A above and 25 or less degree, more preferably 3 or more and 20 or less.In addition, elongation can from it is existing it is known in fit Work as selection, stress when extending to elongation 100% be 0.1N or more and 1 elastomeric element 33 of 1N filiform below preferably with The state that extends in 50% or more elongation and 300% or less range, which is arranged, fixes, so preferably with 100% or more and The state extended in 250% or less range, which is arranged, fixes.Furthermore elongation be elongation and the length of increased amount relative to from So long ratio, for example, if the component of length 10cm is extended to 20cm, elongation 100%.

Furthermore it is being arranged fixed elastomer film or the mesh being made of elastomer replaces Filamentous elastomeric element 33 and shape In the case where at retractility side flap 3, the stress of every 25mm width when preferably by elongation to elongation 100% is 3N/25mm Above and 25N/25mm mesh below is arranged admittedly with the state extended in the range below of elongation 50% or more and 300% Determine and form retractility side flap 3, and then is preferably arranged with the state in 100% or more and 250% range elongation below solid Determine and forms retractility side flap 3.

The elastomeric element 33 of multiple filiforms of elongation state extends more via intersecting with each elastomeric element 33 along Y-direction A bonding agent (not shown) is fixed between skin lateral plate 31 and non-skin lateral plate 32, and is being not provided with elastomeric element 33 Position, skin lateral plate 31 and non-skin lateral plate 32 are directly engaged via each above-mentioned bonding agent (not shown) each other.Multiple bondings Agent (not shown) preferably extends along Y-direction with the elastomeric element 33 of all filiforms extended in X direction across, and then preferably Throughout the overall length of the Y-direction of retractility side flap 3.Roughly equal compartment of terrain is arranged in the X direction and matches for bonding agent (not shown) It is equipped with multiple.Retractility side flap 3 is any by various well known methods in skin lateral plate 31 and non-skin lateral plate 32 Person or both applies multiple bonding agents (not shown), is after coating overlapped sheet above 31,32 and pressurizes, and thus fixation is more The Filamentous elastomeric element 33 of a elongation state and formed.As shown in Figure 7 and Figure 8, in the retractility side flap 3 being thusly-formed Elastomeric element 33 there is the fixed end 33I of the interior side (close to center line CL) of X-direction and the fixed end 33O of foreign side, side inside (close to center line CL) the fixed end 33I and fixed end 33O of foreign side, has not had convergent force, and becomes non-telescoping state. The length of the X-direction of the fixed end 33O of foreign side retractility side flap 3 shown in Fig. 7 is under natural conditions, preferably Filamentous 10% or more and 40% range below of the X-direction overall length of elastomeric element 33, and then preferably 15% or more and 35% or less Range.The length of the X-direction of the fixed end 33I of interior side is also identical as the fixed length of X-direction of end 33O of foreign side.Furthermore Retractility side flap 3 can also combine in addition to the fixation using bonding agent realization (not shown) and utilize the progress such as heat sealing Welding is fixed to implement.

In diaper 1B, the skin lateral plate 31 of retractility side flap 3 has the bullet than multiple filiforms as shown in Figure 7 and Figure 8 Property component 33 X-direction the extension 31S that extends to X-direction foreign side of the fixed end 33O of foreign side, non-skin lateral plate 32 is similarly The extension 32S that the fixed end 33O of foreign side with the X-direction than multiple elastomeric elements 33 extends to X-direction foreign side.Extension 31S, 32S are fixed and pressurization after integrally applying bonding agent using various well known methods each other.Just exist The outside portion 3S of retractility side flap 3 is not easy for the viewpoint crimped when use, and the mutual fixation of extension 31S, 32S is except utilization Other than the fixation that bonding agent is realized, it also can be implemented and fixed using the welding that sealing carries out, them can also be combined.

If the magic tape 4 for the outside portion 3S for being set to retractility side flap 3 is described in detail, magic tape 4 includes There is the hook side part 42 of multiple engaging protrusions with substrate sheets 41 and on the outside of the X-direction with substrate sheets 41.Magic tape 4 is before use It folds, is unfolded as shown in Figure 8 to use when in use.The magic tape 4 of diaper 1B is as shown in Figure 7 in the deployed state in the side X To longer rectangle.Magic tape 4 is being formed as on the outside of the X-direction with substrate sheets 41 identical with the plan view shape of magic tape 4 Stay hook surface parts 42 and formed.Furthermore the outer surface of the veutro portion A in diaper 1B is provided with the hook side part 42 for making magic tape 4 Fixed takes piece 5.

If magic tape 4 and the fixation of retractility side flap 3 are described in detail, magic tape 4 is installed on as shown in Figure 8 The non-skin opposite face (face of the side Q) of retractility side flap 3.Specifically, in diaper 1B, as shown in figure 8, the X of magic tape 4 It is Filamentous that interior side (close to the center line CL) side in direction is only installed on the ratio in the non-skin lateral plate 32 for constituting retractility side flap 3 The fixed end 33O of foreign side of elastomeric element 33 depend on the extension 32S of X-direction foreign side, and be only installed on the non-flesh of extension 32S Skin opposite face (face of the side Q).

In addition, as shown in Figure 7 and Figure 8, magic tape 4 is from the lateral border 3S1 along Y-direction of retractility side flap 3 to absorption Property 2 side interval S of main body, engages via the 1st engaging zones 6 with retractility side flap 3.Therefore, as shown in Figure 7 and Figure 8, exist Between 1st engaging zones 6 and the lateral border 3S1 of retractility side flap 3, it is continuously formed magic tape 4 and retractility in the Y direction The non-set out region 7 that side flap 3 is not engaged.If specifically describing to the 1st engaging zones 6, the 1st engaging zones 6 are in diaper It is formed by heat sealing or ultrasonic sealing function in 1B and is formed by bonding agent as shown in Figure 8.In this way, passing through heat sealing Or ultrasonic sealing function and when being formed, be easy to carry out the adjustment of the 1st engaging zones 6, magic tape 4 is bonding with retractility side flap 3 Intensity is easy to improve.In addition, the flexibility of the 1st engaging zones 6 is excellent when being formed by bonding agent.In diaper 1B, due to Magic tape 4 is fixed with retractility side flap 3 by welding and bonding agent, so magic tape 4 is bonding with retractility side flap 3 Intensity further increases.

More specifically, the 1st engaging zones 6 include: as shown in Figure 7 and Figure 8 using heat sealing or ultrasonic sealing function welding The weld portion 61 of magic tape 4 and retractility side flap 3；With the non-weld portion of no welding magic tape 4 and retractility side flap 3 62.1st engaging zones 6 include weld portion made of the weld portion 61 of multiple small shapes regularly arranges in the Y direction as shown in Figure 7 Group 61G, weld portion group 61G are arranged with multiple in body width direction (X-direction), form the adjacent of another weld portion group 61G Weld portion 61,61 each other by body width direction (X-direction) not side by side in a manner of be in staggered configuration.If narration in detail, diaper The weld portion 61 of 1B includes having the 1st weld portion 611 of angled lengthwise relative to Y-direction and making direction and the 1st as shown in Figure 7 2nd weld portion 612 of the opposite lengthwise of weld portion 611.Herein, so-called to keep direction opposite, it is to instigate 611 phase of the 1st weld portion For the imaginary line IL1 (referring to Fig. 7) extended parallel to center line CL imaginary 1st weld portion 611 symmetrically configured Angle relative to Y-direction consistent with the angle relative to Y-direction of the 2nd weld portion 612 is identical angle.As shown in fig. 7, The weld portion group 61G of diaper 1B include: the 1st weld portion 611 regularly in the Y direction interval arrangement made of the 1st welding Portion group 611G；With the 2nd weld portion 612 regularly in the Y direction interval arrangement made of the 2nd weld portion group 612G.Moreover, As shown in fig. 7, the 1st weld portion group 611G replaces with the 2nd weld portion group 612G in X-direction in the 1st engaging zones 6 of diaper 1B Ground respectively arranges two rows.Therefore, the adjacent of another weld portion group 61G (the 1st weld portion group 611G or the 2nd weld portion 612) is formed 1st weld portion 611 is not configured in X-direction in parallel position with the 2nd weld portion 612, and is in staggered configuration in the Y direction.Furthermore As shown in fig. 7, adjacent weld portion 61 (the 1st weld portion 611 and the 2nd weld portion 612) becomes non-weld portion 62 each other.Such as This, it is excellent by the flexibility with non-the 62, the 1st engaging zones 6 of weld portion.Moreover, being not easy by with non-weld portion 62 Weld portion 61 generates folding line, and the flexibility of the 1st engaging zones 6 is excellent.

Moreover, the 1st engaging zones 6 include engaging magic tape 4 using bonding agent and stretching in diaper 1B as shown in Figure 8 The bonding agent joint portion 63 of property side flap 3.In X-direction, (two arrange the 1st welding with four column weld portion group 61G at bonding agent joint portion 63 Portion group 611G and two arranges the 2nd weld portion group 612G) equivalent width, continuously spread along Y-direction in parallel with center line CL viscous The overall length of the Y-direction of cingulum 4 and formed.Therefore, there is the non-set out region 7 of fixed width (length identical with interval S) It is continuously formed in parallel along Y-direction with center line CL.Furthermore the bonding agent joint portion 63 of diaper 1B is molten in X-direction and four rows The equivalent width of socket part group 61G, but if can ensure non-set out region 7, it also may not necessarily be with four row weld portion group 61G Equivalent width.

The region Chong Die with magic tape 4 of retractility side flap 3 (is combined the 1st engaging zones 6 with non-set out region 7 Region) retractility side flap 3 Y-direction length, be longer than the length of the Y-direction of the magic tape 4 of the overlapping region.This Place, the length of so-called above-mentioned Y-direction refer to the retractility side flap including the region Chong Die with magic tape 4 of retractility side flap 3 The length on widest position in 3 part or the part of magic tape 4.Lossless wearing feeling is made operability improve and make to For the interior viewpoint to play a role in the power of the opposite surface side of skin, the length of the Y-direction of the retractility side flap 3 of above-mentioned overlapping region Degree is preferably 1.2 times or more and 3.5 times of the length of the Y-direction of the magic tape 4 of the overlapping region hereinafter, being in turn preferably 1.4 Times or more and 3.0 times or less.

For the viewpoint of adhesive strength, the region of above-mentioned overlapping is preferably with respect to the retractility side overlooked under natural conditions The gross area of retractility side flap 3 when fin 3 be 10% or more and 50% range below, and then preferably 10% or more and 40% range below.

With regard to non-set out region 7 ensure the viewpoint with adhesive strength for, the 1st engaging zones 6 are preferably with respect to above-mentioned heavy The area in region is folded as 40% or more and 90% range below, and then preferably 50% or more and 85% range below.

For the viewpoint that the freedom degree of the side edge part of the retractility side flap 3 when wearing is kept, non-set out region 7 is preferred Relative to above-mentioned overlapping region area be 10% or more and 50% range below, and then preferably 15% or more and 40% with Under range.

There is no particular restriction for the shape of weld portion 61 (the 1st weld portion 611 and the 2nd weld portion 612), except as diaper 1B Lengthwise ellipse other than, or the arbitrary shape such as circle, diamond shape, triangle, polygon.With regard to lossless dress Feel and for viewpoint that adhesive strength improves, 1 weld portion 61 (1 the 1st weld portion 611 or 1 the 2nd weld portion 612) Sealing pattern area is preferably 2mm²Above and 30mm²Hereinafter, being in turn preferably 2mm²Above and 20mm²Below.With regard to identical sight For point, the 1st adjacent weld portion 611 of Y-direction or Y-direction it is adjacent the 2nd weld portion 612 it is mutual be preferably spaced 1mm with Upper and 8mm hereinafter, be preferably 6mm or less in turn.For identical viewpoint, immediate adjacent weld portion 61 mutual It is preferably 1mm or more and 8mm hereinafter, being in turn preferably 6mm or less every (interval of the 1st weld portion 611 and the 2nd weld portion 612). In addition, the number that weld portion 61 (the 1st weld portion 611 and the 2nd weld portion 612) is configured is preferably 1 for identical viewpoint A/cm²Above and 16/cm²Hereinafter, being in turn preferably 2/cm²Above and 10/cm²Below.In turn, with regard to identical viewpoint For, total sealing pattern area of multiple weld portions 61 (the 1st weld portion 611 and the 2nd weld portion 612) is relative to the 1st bonding land The ratio of the area in domain 6 is preferably 10% or more and 70% hereinafter, being in turn preferably 10% or more and 50% or less.

The constituent material of diaper 1B is illustrated.

It, can be respectively without special limit as positive dough sheet 21, the outer layer composite sheet 22, absorber 23 for constituting absorbent main body 2 System ground uses material used in the always absorbent commodities such as disposable diaper, sanitary napkin etc..For example, as positive dough sheet 21, it is able to use non-woven fabrics or solid apertured film of hydrophily and liquid permeability etc..As outer layer composite sheet 22, it is able to use not The resin film layer of liquid permeability or difficult liquid permeability (including water-repellancy) is laminated with non-woven fabrics (such as the hot wind formed using various preparation methods Non-woven fabrics, spun-bonded non-woven fabrics, spunlace non-woven cloth, needle punched non-woven fabrics etc.) piece etc..In addition, as absorber 23, be able to use with The aggregates (or non-woven fabrics) of fibers such as the clad sheet cladding paper pulp fiber that water penetration thin paper or non-woven fabrics are constituted make Water-absorbent polymer particles are held in the material etc. of absorbent core made of in the aggregate of the fibers such as pulp fibres.It is vertical as constituting The sidepiece sheet 24 of body encirclement is able to use film, non-woven fabrics, fabric or their laminates etc..

As the band substrate 42 for the skin lateral plate 31 and non-skin lateral plate 32 and magic tape 4 for constituting retractility side flap 3, It can be used without special restrictions the various sheet materials always for absorbent commodities such as disposable diaper, sanitary napkins.

For example, as skin lateral plate 31, non-skin lateral plate 32, band substrate 42, be able to use non-woven fabrics, fabric, film or it Laminates etc..

As to form the bonding agent by the fixed bonding agent joint portion 63 of magic tape 4 and retractility side flap 3 as representative For engaging the preferred material of bonding agent between each component, can enumerate: amorphous polyolefins, ethylene-vinyl acetate c Object (EVA), vinyl-acrylate copolymer (EEA), Styrene-Butadiene-Styrene Block Copolymer (SBS), styrene- Isoprene-styrene block copolymer (SIS), styrene-ethylene-butylene-styrene block copolymer (SEBS), benzene second The mixture etc. of the thermoplastic polymers and they such as alkene-ethylene/propene-styrene block copolymer (SEPS).Bonding agent is preferred Heat molten type.

As long as forming the hook side part 42 of magic tape 4 and with substrate sheets 41 usually to can be used for the absorbabilities object such as disposable diaper The material of product, then can be used without special restrictions.For example, being able to use " Magic Tape (registrar as hook side part 42 Mark) " (manufacture of KURARAY company), " Quicklon (registered trademark) " (manufacture of YKK company), " Magi Cloth (registrar Mark) " sunny side component etc. in (manufacture of Kanebo Bell-Touch company) etc..As band substrate sheets 41, it is able to use poly- second It the synthetic resin such as alkene, polypropylene or polyethylene terephthalate and is made of above-mentioned synthetic resin composite material of more than two kinds Piece or non-woven fabrics etc..

To using the disposable diaper 1B of above-mentioned the 1st embodiment as of the invention (the 2nd invention) (hereinafter also referred to " diaper 1B ") when function and effect be illustrated.

Diaper 1B, as shown in Figure 7 and Figure 8, magic tape 4 are only installed on the non-skin opposite face (side Q of retractility side flap 3 Face), the in engagement magic tape 4 and retractility side flap 3 the 1st closes between region 6 and the lateral border 3S1 of retractility side flap 3, Non-set out region 7 has been continuously formed along Y-direction.Due to being formed with such non-set out region 7, using when wearing diaper 1B, Magic tape 4 is stretched to pull, when extending retractility side flap 3, the outer peripheral edge portion of retractility waist panel 3 is easy as shown in Figure 9 Towards skin opposite face (face of the side P) side.In the state of in this way towards skin opposite face (face of the side P) side, by the side drosal part B Magic tape 4 the pressing of hook side part 42 when taking on piece 5 for the side veutro portion A is fixed, the habited situation on diaper 1B Under, it is not easy to the outer peripheral edge portion of retractility waist panel 3 is tangled, use feeling improves.

Then, the disposable diaper of the 2nd~the 6th embodiment of (the 2nd invention) of the invention is illustrated.2nd~the 6th The aspect of the fixation of the magic tape 4 and retractility side flap 3 of disposable diaper 1C~1G of embodiment is different from the 1st embodiment party The diaper 1B of formula.About diaper 1C~1G of the 2nd~the 6th embodiment, mainly for different from the diaper 1B of the 1st embodiment Aspect be illustrated, identical symbol attached for identical aspect mark simultaneously omits the description.In terms of not mentioning especially, fit When explanation of the application about the diaper 1B of the 1st embodiment.

The magic tape 4 and the fixation of retractility side flap 3 of diaper 1C are described in detail.

In diaper 1C, in the same manner as diaper 1B, as shown in Figure 10, the interior side of the X-direction of magic tape 4 is (close to center line CL) side is only installed on the elasticity of the ratio filiform in the non-skin lateral plate 32 for constituting retractility side flap 3 via the 1st engaging zones 6 The fixed end 33O of the foreign side of component 33 depends on the extension 32S of X-direction foreign side, and is installed only at extension via the 1st engaging zones 6 The non-skin opposite face (face of the side Q) of portion 32S.In this way, magic tape 4 is only installed on the non-skin opposite face of retractility side flap 3 (face of the side Q).

In addition, in the same manner as diaper 1B, magic tape 4 and retractility side flap 3 pass through welding and bonding agent in diaper 1C And it fixes.

As shown in Figure 10, the 1st engaging zones 6 of diaper 1C include weld portion 61 and non-weld portion in the same manner as diaper 1B 62。

As shown in Figure 10, the weld portion 61 of diaper 1C only includes having the 1st weld portion of angled lengthwise relative to Y-direction 611.In diaper 1C, in the 1st engaging zones 6, the 1st weld portion 611 is discontinuously configured along Y-direction and formed along Y-direction The 1st weld portion group 611G extended is formed with two rows in X-direction.Form the phase of the adjacent another 1st weld portion group 611G of X-direction The 1st adjacent weld portion 611 is not in staggered configuration with the 1st weld portion 611, and configures the position parallel in X-direction.Furthermore as schemed Shown in 10, adjacent weld portion 61 becomes non-weld portion 62 each other.

Moreover, the 1st engaging zones 6 include engaging magic tape 4 using bonding agent in the same manner as diaper 1B in diaper 1C With the bonding agent joint portion 63 of retractility side flap 3.Width of the bonding agent joint portion 63 in X-direction and two row weld portion group 611G It is substantially uniform, it continuously spreads the overall length of the Y-direction of magic tape 4 along Y-direction in parallel with center line CL and is formed.Therefore, have The non-set out region 7 for having fixed width (length identical with interval S) and center line CL are in parallel along the continuous landform of Y-direction At.

If to using function and effect when above-mentioned diaper 1C to be illustrated, the effect and the effect phase of diaper 1B of diaper 1C Together.

Then, the magic tape 4 of diaper 1D and the fixation of retractility side flap 3 are described in detail.

In diaper 1D, the 1st engaging zones 6 as shown in figure 11 with the Filamentous elastomeric element 33 in retractility side flap 3 The fixed end 33O of foreign side a part overlapping.In diaper 1D, interior side (close to center line CL) side of the X-direction of magic tape 4 Composition retractility side flap corresponding with the fixed position of end 33O of the foreign side of elastomeric element 33 is spread via the 1st engaging zones 6 The fixed end 33O of the foreign side of ratio elastomeric element 33 in a part and non-skin lateral plate 32 of the position of 3 non-skin lateral plate 32 By X-direction foreign side extension 32S and install.Moreover, interior side (close to center line CL) side of the X-direction of magic tape 4 is via the 1st Engaging zones 6 are only installed on a part of the position of non-skin lateral plate 32 corresponding with the fixed position of end 33O of foreign side and prolong The respective non-skin opposite face (face of the side Q) of extending portion 32S.In this way, magic tape 4 is only installed on the non-skin of retractility side flap 3 Opposite face (face of the side Q).

In addition, in the same manner as diaper 1B, magic tape 4 and retractility side flap 3 pass through welding and bonding agent in diaper 1D And it fixes.

As shown in figure 11, the 1st engaging zones 6 of diaper 1D include weld portion 61 and non-weld portion in the same manner as diaper 1B 62。

As shown in figure 11, the weld portion 61 of diaper 1D only includes having the 1st weld portion of angled lengthwise relative to Y-direction 611.In diaper 1D, in the 1st engaging zones 6, the 1st weld portion 611 is discontinuously configured along Y-direction and formed along Y-direction The 1st weld portion group 611G extended forms two rows in X-direction.Form the adjacent of the adjacent another 1st weld portion group 611G of X-direction The 1st weld portion 611 be not in staggered configuration with the 1st weld portion 611, and configure parallel position in the X direction.Furthermore as schemed Shown in 11, adjacent weld portion 61 becomes non-weld portion 62 each other.

Moreover, the 1st engaging zones 6 include engaging magic tape using bonding agent in the same manner as diaper 1B in diaper 1D 4 and retractility side flap 3 bonding agent joint portion 63.Width of the bonding agent joint portion 63 in X-direction and two row weld portion group 611G It spends substantially uniform, continuously spreads the overall length of the Y-direction of magic tape 4 along Y-direction in parallel with center line CL and formed.Therefore, Non-set out region 7 and center line CL with fixed width (length identical with interval S) are in parallel along the continuous landform of Y-direction At.

To using function and effect when above-mentioned diaper 1D to be illustrated.

About the effect of diaper 1D, the aspect different from the effect of diaper 1B is illustrated.Not specified aspect It is identical as the effect of diaper 1B, the explanation of the appropriate effect using diaper 1B.

In diaper 1D, the 1st engaging zones 6 as shown in figure 11 with the Filamentous elastomeric element 33 in retractility side flap 3 A part overlapping of the fixed end 33O of foreign side.Therefore, the engagement that can be improved the fixed end 33O of foreign side of elastomeric element 33 is strong Degree.

Then, the magic tape 4 of diaper 1E and the fixation of retractility side flap 3 are described in detail.

In diaper 1E, in the same manner as diaper 1B, as shown in figure 12, the interior side of the X-direction of magic tape 4 is (close to center line CL) side is only installed on the elasticity of the ratio filiform in the non-skin lateral plate 32 for constituting retractility side flap 3 via the 1st engaging zones 6 The fixed end 33O of the foreign side of component 33 depends on the extension 32S of X-direction foreign side, and is only installed on extension via the 1st engaging zones 6 The non-skin opposite face (face of the side Q) of portion 32S.In this way, magic tape 4 is only installed on the non-skin opposite face of retractility side flap 3 (face of the side Q).

In addition, magic tape 4 is only fixed by welding with retractility side flap 3 in diaper 1E.

As shown in figure 12, the 1st engaging zones 6 of diaper 1E include weld portion 61 and non-weld portion in the same manner as diaper 1B 62。

As shown in figure 12, the weld portion 61 of diaper 1E only includes the 3rd weld portion of the lengthwise extended parallel to X-direction 613.In diaper 1E, in the 1st engaging zones 6, the 3rd weld portion 613 is discontinuously configured along Y-direction and is formed as towards X-direction 3rd weld portion group 613G of foreign side's protrusion is formed with two column in the X direction.Furthermore as shown in figure 12, adjacent weld portion 61 that Become non-weld portion 62 between this.As shown in figure 12, the 1st engaging zones 6 of diaper 1E are formed by two row weld portion group 613G For the convex protruded towards X-direction foreign side for becoming vertex in the position for the center line CL3 of magic tape 4 extended along the long side direction. Therefore, the non-set out region 7 of diaper 1E becomes the spill being recessed towards X-direction foreign side.Specifically, the disengaged area of diaper 1E Domain 7 is formed as going and the interval of X-direction from the bottom for the center line CL3 for being located at magic tape 4 towards the up and down direction of center line CL3 It is gradually expanded.The non-set out region 7 for the diaper 1E being thusly-formed is continuously formed along Y-direction, and being spaced in for non-set out region 7 is non- Both ends 7E, 7E of Y-direction in engaging zones 7 expand.

With regard to non-set out region 7 ensure the viewpoint with adhesive strength for, the 1st engaging zones 6 of diaper 1E are preferably opposite Area in above-mentioned overlapping region is 40% or more and 90% range below, and then preferably 50% or more and 85% is below Range.

For the viewpoint that the freedom degree of the side edge part of the retractility side flap 3 when wearing is kept, diaper 1E's is disengaged It is 10% or more and 50% range below that region 7, which is preferably relative to the area of above-mentioned overlapping region, and then preferably 15% Above and 40% range below.

There is no particular restriction for the shape of weld portion 61 (the 3rd weld portion 613), except the ellipse of the lengthwise as diaper 1E In addition, or the arbitrary shape such as circle, diamond shape, triangle, polygon.About 613 (weld portion of the 3rd weld portion 61), the adjacent interval of 1 sealing pattern area, Y-direction, the number of configuration, the ratio and diaper 1B of total sealing pattern area Weld portion 61 (the 1st weld portion 611 and the 2nd weld portion 612) it is identical.

To using function and effect when above-mentioned diaper 1E to be illustrated.

About the effect of diaper 1E, the aspect different from the effect of diaper 1B is illustrated.Not specified aspect It is identical as the effect of diaper 1B, the explanation of the appropriate effect using diaper 1B.

In diaper 1E, non-set out region 7 interval as shown in figure 12 the both ends 7E of the Y-direction in non-set out region 7, 7E expands.Therefore, when wearing diaper 1E, magic tape 4 is stretched to pull, when extending retractility side flap 3, retractility side flap 3 outer peripheral edge portion is easier towards skin opposite face (face of the side P) side, therefore use feeling further increases.

In addition, the 1st engaging zones 6 of diaper 1E become the convex protruded towards X-direction foreign side as shown in figure 12.Therefore, exist When wearing diaper 1E, when stretching magic tape 4 to pull, it can be easy to make to be applied to the drawing force dispersion of the 1st engaging zones 6, prevent It is damaged.

Then, the magic tape 4 of diaper 1F and the fixation of retractility side flap 3 are described in detail.

In diaper 1F, in the same manner as diaper 1B, as shown in figure 13, the interior side of the X-direction of magic tape 4 is (close to center line CL) side is only installed on the elasticity of the ratio filiform in the non-skin lateral plate 32 for constituting retractility side flap 3 via the 1st engaging zones 6 The fixed end 33O of the foreign side of component 33 depends on the extension 32S of X-direction foreign side, and is only installed on extension via the 1st engaging zones 6 The non-skin opposite face (face of the side Q) of portion 32S.In this way, magic tape 4 is only installed on the non-skin opposite face of retractility side flap 3 (face of the side Q).

In addition, magic tape 4 is only fixed by bonding agent with retractility side flap 3 in diaper 1F.

The 1st engaging zones 6 of diaper 1F include the bonding that magic tape 4 and retractility side flap 3 are engaged using bonding agent Agent joint portion 63.Bonding agent joint portion 63 continuously spreads the overall length of the Y-direction of magic tape 4 along Y-direction and is formed.And then it is specific For, as shown in figure 13, the 1st engaging zones 6 of diaper 1F are become in magic tape 4 by bonding agent joint portion 63 along long side The position for the center line CL3 that direction extends becomes the convex protruded towards X-direction foreign side on vertex.Therefore, diaper 1F's is disengaged Region 7 becomes the spill being recessed towards X-direction foreign side.Specifically, the non-set out region 7 of diaper 1F is formed as from positioned at magic tape The up and down direction of bottom towards the center line CL3 of 4 center line CL3 are gone and the interval of X-direction is gradually expanded.The urine being thusly-formed The non-set out region 7 of cloth 1F is continuously formed along Y-direction, the Y-direction of non-set out region 7 being spaced in non-set out region 7 Both ends 7E, 7E expand.

For the viewpoint of adhesive strength, the area of the 1st engaging zones 6 of diaper 1F preferably with respect to above-mentioned overlapping region For 50% or more and 90% range below, and then preferably 60% or more and 90% range below.

For the viewpoint that the freedom degree of the side edge part of the retractility side flap 3 when wearing is kept, diaper 1F's is disengaged Region 7 preferably with respect to above-mentioned overlapping region area be 10% or more and 50% range below, and then preferably 10% with Upper and 40% range below.

To using function and effect when above-mentioned diaper 1F to be illustrated.

About the effect of diaper 1F, the aspect different from the effect of diaper 1B is illustrated.Not specified aspect, It is identical as the effect of diaper 1B, the explanation of the appropriate effect using diaper 1B.

In diaper 1F, non-set out region 7 interval as shown in figure 13 the both ends 7E of the Y-direction in non-set out region 7, 7E expands.Therefore, when wearing diaper 1F, magic tape 4 is stretched to pull, when extending retractility side flap 3, retractility side flap 3 outer peripheral edge portion is easier to towards skin opposite face (face of the side P) side, therefore use feeling further increases.

In addition, the 1st engaging zones 6 of diaper 1F are only formed by bonding agent, therefore pliability improves, moreover, as schemed Shown in 13, become the convex protruded towards X-direction foreign side, therefore when wearing diaper 1F, when stretching magic tape 4 to pull, Neng Gourong Easily make the drawing force dispersion for being applied to the 1st engaging zones 6, prevents breakage.

Then, the magic tape 4 of diaper 1G and the fixation of retractility side flap 3 are described in detail.

In diaper 1G, in the same manner as diaper 1B, as shown in figure 14, the interior side of the X-direction of magic tape 4 is (close to center line CL) side is only installed on the elasticity of the ratio filiform in the non-skin lateral plate 32 for constituting retractility side flap 3 via the 1st engaging zones 6 The fixed end 33O of the foreign side of component 33 depends on the extension 32S of X-direction foreign side, and is only installed on extension via the 1st engaging zones 6 The non-skin opposite face (face of the side Q) of portion 32S.In this way, magic tape 4 is only installed on the non-skin opposite face of retractility side flap 3 (face of the side Q).

In addition, magic tape 4 is only fixed by bonding agent with retractility side flap 3 in diaper 1G.

The 1st engaging zones 6 of diaper 1G include the bonding that magic tape 4 and retractility side flap 3 are engaged using bonding agent Agent joint portion 63.Bonding agent joint portion 63 continuously spreads the overall length of the Y-direction of magic tape 4 along Y-direction and is formed.It is more specific and Speech, the 1st engaging zones 6 of diaper 1G as shown in figure 14, by bonding agent joint portion 63, and become than magic tape 4 along long The position center line CL3 that edge direction extends against the top becomes the convex protruded towards X-direction foreign side on vertex.Therefore, diaper 1G Non-set out region 7 become the spill that is recessed towards X-direction foreign side.Specifically, the non-set out region 7 of diaper 1G be formed as than The position center line CL3 of magic tape 4 against the top has bottom, and goes and X from the bottom towards the up and down direction of center line CL3 The interval in direction is gradually expanded.The non-set out region 7 for the diaper 1G being thusly-formed is continuously formed along Y-direction, non-set out region 7 Be spaced in than the center line CL3 of magic tape 4 and to locate to become most narrow against the top.

For the viewpoint of adhesive strength, the area of the 1st engaging zones 6 of diaper 1G preferably with respect to above-mentioned overlapping region For 50% or more and 90% range below, and then preferably 60% or more and 90% range below.

For the viewpoint that the freedom degree of the side edge part of the retractility side flap 3 when wearing is kept, diaper 1G's is disengaged Region 7 preferably with respect to above-mentioned overlapping region area be 10% or more and 50% range below, and then preferably 10% with Upper and 40% range below.In this way, the range of the 1st engaging zones 6 as diaper 1G, the 1st engaging zones 6 with diaper 1F Range it is identical.

To using function and effect when above-mentioned diaper 1G to be illustrated.

About the effect of diaper 1G, the aspect different from the effect of diaper 1B is illustrated.Not specified aspect It is identical as the effect of diaper 1B, the explanation of the appropriate effect using diaper 1B.

In diaper 1G, non-set out region 7 interval as shown in figure 14 the place against the top center line CL3 than magic tape 4 at It is most narrow.Therefore, when wearing diaper 1G, magic tape 4 is stretched to pull, when extending retractility side flap 3, retractility side flap The especially lower section of 3 outer peripheral edge portion is easier towards skin opposite face (face of the side P) side, therefore use feeling further increases.

In addition, the 1st engaging zones 6 of diaper 1G are only formed by bonding agent, therefore pliability improves, and such as Figure 14 It is shown as the convex protruded towards X-direction foreign side, therefore when wearing diaper 1G, when stretching magic tape 4 to pull, can be easy to make It is applied to the drawing force dispersion of the 1st engaging zones 6, prevents breakage.

The disposable diaper of (the 2nd invention) of the invention can fit not by the diaper 1B any restrictions of above-mentioned present embodiment Work as change.

The disposable diaper of (the 2nd invention) of the invention is not any by diaper 1B~1G of above-mentioned 1st~the 6th embodiment Limitation, can suitably change.In addition, each composition major part in diaper 1B~1G of above-mentioned 1st~the 6th embodiment can be It is appropriately combined and implement in the range of the purport of the lossless present invention (the 2nd invention).

For example, in diaper 1B~1G of above-mentioned 1st~the 6th embodiment, such as Fig. 7, Figure 10, Figure 11, Figure 12, Tu13Huo Shown in Figure 14, as retractility side flap 3, using fixing X-direction elongation between skin lateral plate 31 and non-skin lateral plate 32 The elastomeric elements 33 of multiple filiforms of state and the component formed, but can also replace, using the film of such as retractility, stretch The non-woven fabrics of contracting, the fabric of retractility or their laminates etc..

In addition, in diaper 1B~1G of above-mentioned 1st~the 6th embodiment, as shown in figure 8, magic tape 4 is only installed on and stretches The non-skin opposite face (face of the side Q) of contracting side flap 3, but as long as the non-skin for being at least installed on retractility side flap 3 is opposite Face (face of the side Q).

Only part possessed by an above-mentioned embodiment can it is interior in each invention (the 1st and the 2nd invention) or respectively the invention it Between all appropriate mutually utilize.

About above embodiment, and then disclose disposable diaper below.

1 > of <

A kind of disposable diaper comprising the absorbent main body of lengthwise, the absorbent main body include the suction of liquid retainability Acceptor, back of the skin with respect to the positive dough sheet of surface side and the opposite surface side of non-skin for being configured at the absorber for being configured at the absorber Dough sheet, and be divided into the veutro portion positioned at the veutro of wearer when wearing, the drosal part positioned at back side and be configured at the veutro portion With the crotch between the drosal part,

It is separately installed in the both sides of the one end of the longitudinal direction of above-mentioned absorbent main body to width direction foreign side and prolongs The retractility side flap of stretching is installed outside oriented width direction in the outside portion along main body longitudinal direction of the retractility side flap The magic tape just extended,

Above-mentioned magic tape is installed on the non-skin opposite face of above-mentioned retractility side flap,

Above-mentioned magic tape is from the lateral border along main body longitudinal direction of above-mentioned retractility side flap in above-mentioned absorbent main body Side at spaced intervals via the 1st bonding land engaged by bonding agent and above-mentioned retractility flank chip bonding,

Between above-mentioned engaging zones and the lateral border of above-mentioned retractility side flap, endlong throughout main body longitudinal direction It is formed continuously the non-set out region or the 2nd weak engaging zones that above-mentioned magic tape and above-mentioned retractility side flap are not engaged, on It states the 2nd weak engaging zones and adjacently configures more being leaned on the outside of width direction than above-mentioned 1st engaging zones, and bond strength is weaker than State the 1st engaging zones.

2 > of <

Such as the disposable diaper of 1 > of <, wherein above-mentioned 1st engaging zones are engaged by bonding agent, and by multiple It seals joint portion and engages, above-mentioned sealing joint portion is crimping processing, heat sealing or the ultrasonic sealing function by being carried out with embossing Any one of and formed.

3 > of <

Such as the disposable diaper of 2 > of < 1 > or <, wherein above-mentioned side flap is retractility side flap.

4 > of <

Such as the disposable diaper of any one of 3 > of < 1 > to <, wherein above-mentioned magic tape is only installed on above-mentioned side flap Non- skin opposite face.

5 > of <

Such as the disposable diaper of any one of 4 > of < 1 > to <, wherein in above-mentioned 2nd weak engaging zones, only via logical It crosses embossing processing, heat sealing or ultrasonic sealing function and multiple sealing joint portions for being formed and engages.

6 > of <

Such as the disposable diaper of 5 > of <, wherein above-mentioned 2nd weak engaging zones include above-mentioned multiple sealing joint portions and match It is placed in the disengaged portion between the adjacent joint portion.

7 > of <

Such as the disposable diaper of 6 > of < 5 > or <, wherein it is above-mentioned it is multiple sealing joint portions in a part of joint portions across The lateral border in main body longitudinal direction of above-mentioned side flap and to width direction foreign side extend.

8 > of <

Such as the disposable diaper of any one of 7 > of < 5 > to <, wherein the case where stretching above-mentioned magic tape when wearing Under, being configured on the outside of the width direction in above-mentioned multiple sealing joint portions and near 1 sealing joint portion of crotch side, The intersection point of the crotch side of tilt angle and the above-mentioned side flap of connection and above-mentioned magic tape and above-mentioned side flap and above-mentioned absorbability master The tilt angle of 1st imaginary line of the intersection point of the crotch side of body is substantially uniform.

9 > of <

Such as the disposable diaper of any one of 8 > of < 3 > to <, wherein above-mentioned retractility side flap is will be wide in main body The elastomeric element of multiple filiform of the state of degree direction elongation be fixed on positioned at skin with respect to surface side skin lateral plate with positioned at non- Skin between the non-skin lateral plate of surface side with respect to forming, the above-mentioned bullet in above-mentioned engaging zones and above-mentioned retractility side flap Property component outside fixation end a part overlapping.

10 > of <

Such as the disposable diaper of 9 > of <, wherein above-mentioned retractility side flap is in skin lateral plate formed by non-woven fabrics covers. The elastomeric element of fixed multiple filiforms is arranged between non-skin lateral plate and is formed.

11 > of <

Such as the disposable diaper of 10 > of < 9 > or <, wherein the Filamentous elastomeric element in above-mentioned retractility side flap makes It is any number of narrow band-like component roughly circular, square, in rectangle with section.

12 > of <

Such as the disposable diaper of any one of 11 > of < 9 > to <, wherein be configured at the filiform of above-mentioned retractility side flap Elastomeric element width or diameter is preferably 0.1mm or more and 2mm hereinafter, more preferably 0.1mm or more and 1mm or less.

13 > of <

Such as the disposable diaper of any one of 12 > of < 9 > to <, wherein be configured at the filiform of above-mentioned retractility side flap The number of elastomeric element be preferably 1 or more and 25 hereinafter, more preferably 3 or more and 20 or less.

14 > of <

Such as the disposable diaper of any one of 13 > of < 9 > to <, wherein the elongation of the elastomeric element of above-mentioned filiform is to stretching Stress when long rate 100% is 0.1N or more and 1 elastomeric element of 1N filiform below is preferably in 50% or more elongation And 300% the state of range below elongation be arranged and fix, and then preferably to be stretched in 100% or more and 250% range below Long state, which is arranged, fixes.

15 > of <

Such as the disposable diaper of any one of 8 > of < 3 > to <, wherein above-mentioned retractility side flap use is in two nothings It is arranged between woven fabric, that is, skin lateral plate and non-skin lateral plate and secures the compound of elastomer film or the mesh being made of elastomer Body.

16 > of <

Such as the disposable diaper of 15 > of <, wherein be arranged and be fixed with elastomer film or the mesh being made of elastomer It is 3N/25mm or more and 25N/ that above-mentioned retractility lateral plate, which is the stress of every 25mm width when will extend to elongation 100%, 25mm mesh below is with the state extended in the range below of elongation 50% or more and 300% is arranged fixed and is formed , it is preferably arranged fixed with the state in 100% or more and 250% range elongation below and is formed.

17 > of <

Such as the disposable diaper of any one of 14 > of < 9 > to <, wherein above-mentioned side flap has the bullet of multiple filiforms Property component is fixed on the adhesive layer between skin lateral plate and non-skin lateral plate, which includes by the suction of each elastomeric element The fixed main body side adhesive layer of the end side of the property received main body side, by the end of the outside portion side of the side flap of each elastomeric element The outside adhesive layer and be configured between the main body side adhesive layer and the outside adhesive layer and consolidate two pieces that side is fixed Fixed intermediate adhesive layer.

18 > of <

Such as the disposable diaper of 17 > of <, wherein above-mentioned intermediate adhesive layer is in main body side adhesive layer and outer side bonds Region between oxidant layer be provided with it is multiple, intermediate adhesive layer in diaper, width be less than above-mentioned two adhesive layer in any Person, and discontinuously configured in intermediate region in width direction.

19 > of <

Such as the disposable diaper of 18 > of < 17 > or <, wherein aforementioned body side bonds oxidant layer, outside adhesive layer and in Between adhesive layer extend along the long side direction across with each elastomeric element, and throughout retractility side flap longitudinal direction it is complete It is long.

20 > of <

Such as the disposable diaper of any one of 19 > of < 3 > to <, wherein in above-mentioned side flap, in above-mentioned elastic portion Part is shunk under natural conditions, is formed with multiple pleats on the two sides of side flap, each pleat with multiple elastomeric elements in a manner of intersecting It is formed extended at both sides in longitudinal direction, is formed in the pleat of side flap, be between main body side adhesive layer and front end side adhesive layer By the contraction of elastomeric element, it is convex that two pieces, which swell in each non-adhesive region to the direction left from elastomeric element, another Aspect is formed as concavity towards elastomeric element in each intermediate adhesive layer and is formed, and has concaveconvex shape.

21 > of <

Such as the disposable diaper of any one of 20 > of < 3 > to <, wherein above-mentioned retractility side flap is Chong Die with magic tape Engaging zones in retractility side flap the length in longitudinal direction, be longer than the magic tape in the engaging zones of the overlapping In the length of longitudinal direction.

22 > of <

Such as the disposable diaper of 21 > of <, wherein the engaging zones of above-mentioned overlapping are the length of the longitudinal direction of magic tape 1.2 times or more and 3.5 times hereinafter, preferably 1.4 times or more and 3.0 times or less.

23 > of <

Such as the disposable diaper of 22 > of < 21 > or <, wherein the engaging zones of above-mentioned overlapping are relative to vertical view nature shape The gross area of retractility side flap when retractility side flap under state is 10% or more and 50% range below, preferably 10% or more and 40% range below.

24 > of <

Such as the disposable diaper of any one of 23 > of < 1 > to <, wherein the shape at above-mentioned sealing joint portion is ellipse Shape, circle, the shape of diamond shape, triangle, polygon.

25 > of <

Such as the disposable diaper of 24 > of <, wherein the sealing pattern area at above-mentioned sealing joint portion is 2mm²Above and 30mm²Hereinafter, preferably 2mm²Above and 20mm²Below.

26 > of <

Such as the disposable diaper of 25 > of < 24 > or <, wherein mutual of above-mentioned sealing joint portion be divided into 1mm or more and 8mm or less.

27 > of <

Such as the disposable diaper of any one of 26 > of < 3 > to <, wherein be set to the outside of above-mentioned retractility side flap The magic tape in portion includes having the hook side part of multiple engaging protrusions with substrate sheets and in the outside of the width direction with substrate sheets, is glued Cingulum use preceding folding, when in use expansion use, magic tape be in the deployed state in the longer rectangle of width X-direction, Magic tape be in the outside stay hook surface parts for being formed as the width direction with substrate sheets identical with the plan view shape of magic tape and It is formed.

28 > of <

Such as the disposable diaper of any one of 27 > of < 1 > to <, wherein above-mentioned disposable diaper veutro portion it is outer Surface be provided with keep the hook side part of magic tape fixed take piece.

29 > of <

Such as the disposable diaper of any one of 28 > of < 1 > to <, wherein in two along the long side direction of absorbent main body Side is configured with sidepiece sheet across positive dough sheet respectively.

30 > of <

Such as the disposable diaper of 29 > of <, wherein above-mentioned sidepiece sheet is spread with respect to surface side along long side in the skin of positive dough sheet Be arranged to the side whole region in direction fixation, the medial end of the width direction of sidepiece sheet becomes free end, crotch from Three-dimensional fold formation elastomeric element is fixed with by holding nearby with the state arranging extended in longitudinal direction to pass through when wearing The convergent force of the elastomeric element, the part of defined width is left from positive dough sheet and forms three-dimensional fold from free end.In turn, exist The both sides along the long side direction of absorbent main body are bonded to the sidepiece sheet extended to the foreign side of width direction and the back side respectively Piece and form wing flap portion, in diaper, the elastomeric element of leg creases formation is arranged solid with the state extended in longitudinal direction Due to the wing flap portion of crotch, when wearing, leg creases are formed by the convergent force of the elastomeric element.

31 > of <

Such as the disposable diaper of any one of above-mentioned 30 > of < 1 > to <, wherein above-mentioned retractility side flap along main body The length of the outside edge of longitudinal direction is formed as the main body longitudinal direction in the 1st engaging zones for being longer than above-mentioned magic tape Length.

32 > of <

Such as the disposable diaper of any one of above-mentioned 31 > of < 1 > to <, wherein above-mentioned 1st engaging zones are to pass through heat Sealing or ultrasonic sealing function and formed.

33 > of <

Such as the disposable diaper of any one of above-mentioned 33 > of < 1 > to <, wherein above-mentioned 1st engaging zones include: above-mentioned The weld portion of magic tape and above-mentioned retractility side flap welding；With the above-mentioned magic tape of no welding and above-mentioned retractility side flap Non- weld portion.

34 > of <

Such as the disposable diaper of any one of above-mentioned 33 > of < 1 > to <, wherein above-mentioned 1st engaging zones have multiple The weld portion of small shape is regularly arranged the column of the weld portion made of main body longitudinal direction, which is listed in body width direction Be arranged with multiple, adjacent weld portions each other by not body width direction side by side in a manner of be in staggered configuration.

35 > of <

Such as the disposable diaper of any one of above-mentioned 34 > of < 1 > to <, wherein above-mentioned 1st engaging zones are by viscous It connects agent and is formed.

36 > of <

Such as the disposable diaper of any one of above-mentioned 35 > of < 1 > to <, wherein above-mentioned retractility side flap is will be in master Multiple elastomeric elements of the state of body width direction elongation are fixed on the skin lateral plate positioned at skin with respect to surface side and are located at non-flesh Skin with respect between the non-skin lateral plate of surface side and formed,

One of the fixed end of the foreign side of above-mentioned elastomeric element in above-mentioned 1st engaging zones and above-mentioned retractility side flap Divide overlapping.

37 > of <

Such as the disposable diaper of any one of above-mentioned 36 > of < 1 > to <, wherein above-mentioned retractility side flap is by two It is overlapped the elastomer film as elastomeric element and the mesh being made of elastomer between a non-woven fabrics and is arranged with extended state Fixed complex is formed,

38 > of <

Such as the disposable diaper of any one of above-mentioned 37 > of < 1 > to <, wherein above-mentioned retractility side flap is will be in master Multiple elastomeric elements of the state of body width direction elongation are fixed on the skin lateral plate positioned at skin with respect to surface side and are located at non-flesh Skin with respect between the non-skin lateral plate of surface side and formed, or by be overlapped as the elastomer film of the elastomeric element and by elasticity Mesh that body is constituted and fixed complex is arranged with extended state and is formed,

Above-mentioned skin lateral plate is different from the development length of the side from above-mentioned absorbent main body of above-mentioned non-skin lateral plate.

39 > of <

Such as the disposable diaper of any one of above-mentioned 38 > of < 1 > to <, wherein above-mentioned non-set out region is spaced in master The both ends of body longitudinal direction expand.

40 > of <

Such as the disposable diaper of any one of above-mentioned 39 > of < 1 > to <, wherein above-mentioned non-set out region is spaced in ratio Above-mentioned magic tape becomes most narrow at the center line place against the top that longitudinal direction extends.

41 > of <

Such as the disposable diaper of any one of above-mentioned 40 > of < 1 > to <, wherein above-mentioned positive dough sheet and above-mentioned outer layer are compound Piece is covered each by the entire surface of the skin opposite face of above-mentioned absorber and the entire surface of non-skin opposite face, from the week of the absorber Edge extends, and in the part extended, is fixed by weldings such as bonding agents or heat sealing such as hot melts.

42 > of <

Such as the disposable diaper of any one of above-mentioned 41 > of < 1 > to <, wherein in above-mentioned absorbent main body along main body The side of longitudinal direction (Y-direction) is configured with sidepiece sheet across above-mentioned positive dough sheet.

43 > of <

Such as the disposable diaper of above-mentioned 42 > of <, wherein above-mentioned sidepiece sheet is in the opposite surface side time of skin of above-mentioned positive dough sheet And along main body longitudinal direction (Y-direction) side whole region fixation is arranged,

The medial end in the body width direction (X-direction) of above-mentioned sidepiece sheet becomes free end, in the free end of crotch Three-dimensional fold formation elastomeric element is nearby fixed with the state arranging extended in main body longitudinal direction (Y-direction), is being worn When, by the convergent force of the elastomeric element, the part of defined width is left from above-mentioned positive dough sheet and is formed vertical from the free end Body fold.

44 > of <

Such as the disposable diaper of above-mentioned 42 > of < or 43 > of <, wherein in above-mentioned absorbent main body along main body long side side To the side of (Y-direction), engages the above-mentioned sidepiece sheet extended on the outside of body width direction (X-direction) and above-mentioned outer layer is multiple Piece is closed, and forms wing flap portion.

45 > of <

Such as the disposable diaper of above-mentioned 44 > of <, wherein in above-mentioned disposable diaper, elastic portion is used in leg creases formation The above-mentioned wing flap portion for being fixed on crotch is arranged with the state extended in main body longitudinal direction (Y-direction) for part, when wearing, by this The convergent force of elastomeric element and form leg creases.

46 > of <

Such as the disposable diaper of any one of above-mentioned 45 > of < 1 > to <, wherein above-mentioned retractility side flap is expanding into It is rectangle, trapezoidal or including curve shape in the state of planar.

47 > of <

Such as the disposable diaper of any one of above-mentioned 46 > of < 1 > to <, wherein be configured in above-mentioned retractility side flap Filamentous elastomeric element,

The width or diameter for being configured at the Filamentous above-mentioned elastomeric element of above-mentioned retractility side flap be 0.1mm or more and 2mm or less.

48 > of <

Such as the disposable diaper of above-mentioned 47 > of <, wherein Filamentous elastomeric element is configured in above-mentioned retractility side flap,

The number for being configured at the above-mentioned elastomeric element of above-mentioned retractility side flap is 1 or more and 25 or less.

49 > of <

Such as the disposable diaper of any one of above-mentioned 48 > of < 1 > to <, wherein above-mentioned retractility side flap is will be in master The elastomeric element of multiple filiforms of the state of body width direction elongation is fixed on skin lateral plate and position positioned at skin with respect to surface side It is formed between non-skin lateral plate of the non-skin with respect to surface side,

Above-mentioned elastomeric element via with the elastomeric element intersect main body longitudinal direction (Y-direction) extend it is multiple bonding Agent and be fixed between above-mentioned skin lateral plate and above-mentioned non-skin lateral plate, should and at the position for being not provided with the elastomeric element Skin lateral plate and the non-skin lateral plate are directly engaged via above-mentioned bonding agent each other.

50 > of <

Such as the disposable diaper of above-mentioned 49 > of <, wherein multiple above-mentioned bonding agents, and in the body width direction (side X To) extend all elastic element crosswise, main body longitudinal direction (Y-direction) extend and spread above-mentioned retractility side flap Y The overall length in direction.

51 > of <

Such as the disposable diaper of above-mentioned 49 > of < or 50 > of <, wherein the fixation of above-mentioned retractility side flap is removed using upper Other than the fixation for stating bonding agent progress, the welding that also combination is carried out using heat sealing is fixed to implement.

52 > of <

Such as the disposable diaper of any one of above-mentioned 51 > of < 1 > to <, wherein the above-mentioned flesh of above-mentioned retractility side flap Skin lateral plate has end more fixed than the foreign side in the body width direction (X-direction) of the above-mentioned elastomeric element of multiple filiforms wide to main body The extension extended on the outside of degree direction (X-direction), above-mentioned non-skin lateral plate similarly have the above-mentioned bullet than multiple filiforms Property component the fixed end of foreign side in body width direction (X-direction) prolong to what is extended on the outside of body width direction (X-direction) Extending portion.

53 > of <

Such as the disposable diaper of any one of above-mentioned 52 > of < 1 > to <, wherein above-mentioned magic tape include band substrate sheets and There is the hook side part of multiple engaging protrusions in the outside in the body width direction (X-direction) with substrate sheets,

Above-mentioned magic tape is using preceding folding, and expansion uses when in use.

54 > of <

Such as the disposable diaper of above-mentioned 24 > of <, wherein above-mentioned magic tape is in body width direction in the deployed state (X-direction) longer rectangle, and

It is in the above-mentioned body width direction (side X with substrate sheets that the plan view shape with above-mentioned magic tape is identically formed To) the fixed above-mentioned hook side part in outside and formed,

The above-mentioned hook side part fixation for making above-mentioned magic tape is provided in the outer surface of the veutro portion of above-mentioned disposable diaper Take piece.

55 > of <

Such as the disposable diaper of any one of above-mentioned 54 > of < 1 > to <, wherein above-mentioned magic tape is only installed on above-mentioned stretch The non-skin opposite face of contracting side flap.

56 > of <

Such as the disposable diaper of any one of above-mentioned 55 > of < 1 > to <, wherein the body width direction of above-mentioned magic tape The foreign side that the inside of (X-direction) is only installed on the ratio elastomeric element in the non-skin lateral plate for constituting above-mentioned retractility side flap is solid The extension on the outside of body width direction (X-direction) is more leaned in fixed end portion, and is only installed on the non-skin opposite face of the extension.

57 > of <

Such as the disposable diaper of above-mentioned 33 > of <, wherein above-mentioned weld portion includes relative to main body longitudinal direction (Y-direction) Have the 1st weld portion of angled lengthwise and makes the 2nd weld portion towards the lengthwise opposite with the 1st weld portion.

58 > of <

As above-mentioned 33 > of < or 28 > of < disposable diaper, wherein the shape of above-mentioned weld portion be lengthwise ellipse, Circle, diamond shape, triangle, polygon.

59 > of <

As above-mentioned < 33 >, < 57 > or 58 > of < disposable diaper, wherein the sealing pattern area of above-mentioned weld portion For 2mm²Above and 30mm²Below.

60 > of <

Such as the disposable diaper of any one of above-mentioned 59 > of < 1 > to <, wherein above-mentioned retractility side flap is glued with above-mentioned The length in main body longitudinal direction (Y-direction) of the retractility side flap in the region of cingulum overlapping, is in the overlapping region 1.2 times or more and 3.5 times or less of the length in main body longitudinal direction (Y-direction) of the magic tape.

61 > of <

Such as the disposable diaper of above-mentioned 60 > of <, wherein above-mentioned overlapping region is relative to overlooking under natural conditions above-mentioned The gross area of retractility side flap when retractility side flap is 10% or more and 50% range below.

62 > of <

Such as the disposable diaper of above-mentioned 60 > of < or 61 > of <, wherein above-mentioned 1st engaging zones are relative to above-mentioned overlay region The area in domain is 40% or more and 90% range below.

63 > of <

Such as the disposable diaper of any one of above-mentioned 62 > of < 60 > to <, wherein above-mentioned non-set out region is relative to upper The area for stating overlapping region is 10% or more and 50% range below.

64 > of <

Such as the disposable diaper of above-mentioned 33 > of <, wherein above-mentioned weld portion only includes relative to the main body longitudinal direction (side Y To) the 1st weld portion of the angled lengthwise of tool,

In above-mentioned 1st engaging zones, the 1st weld portion is discontinuously configured in main body longitudinal direction (Y-direction) and is formed Main body longitudinal direction (Y-direction) extend weld portion group body width direction (X-direction) formed two column,

Adjacent above-mentioned weld portion becomes non-weld portion each other.

65 > of <

Such as the disposable diaper of above-mentioned 33 > of <, wherein above-mentioned weld portion only includes flat with body width direction (X-direction) 3rd weld portion of the lengthwise extended capablely,

In above-mentioned 1st engaging zones, above-mentioned 3rd weld portion is discontinuously configured and shape in main body longitudinal direction (Y-direction) Two column are formed in body width direction (X-direction) as the weld portion group to protrusion on the outside of body width direction (X-direction),

Above-mentioned 1st engaging zones become prolonging along the long side direction in above-mentioned magic tape by the two above-mentioned weld portion groups of column The position for the center line stretched becomes the shape to protrusion on the outside of body width direction (X-direction) on vertex,

Above-mentioned non-set out region becomes the shape to recess on the outside of body width direction (X-direction),

Above-mentioned non-set out region is gone to lead from the up and down direction of bottom towards the center line of the center line for being located at above-mentioned magic tape The interval of body width direction (X-direction) is gradually expanded,

Above-mentioned non-set out region is continuously formed in main body longitudinal direction (Y-direction), which is spaced in this The both ends of the main body longitudinal direction (Y-direction) of non-set out region expand.

66 > of <

Such as the disposable diaper of above-mentioned 1 > of < or 31 > of <, wherein above-mentioned magic tape only leads to above-mentioned retractility side flap It crosses bonding agent and is fixed,

Above-mentioned 1st engaging zones include the bonding that above-mentioned magic tape and above-mentioned retractility side flap are engaged using bonding agent Agent joint portion,

Above-mentioned bonding agent joint portion continuously spreads the main body long side side of above-mentioned magic tape in main body longitudinal direction (Y-direction) To the overall length of (Y-direction),

Above-mentioned 1st engaging zones become the extension along the long side direction in above-mentioned magic tape by above-mentioned bonding agent joint portion Center line position become vertex to the shape protruded on the outside of body width direction (X-direction),

67 > of <

Above-mentioned 1st engaging zones are become by above-mentioned bonding agent joint portion along the long side direction than above-mentioned magic tape The center line of extension position against the top becomes the shape to protrusion on the outside of body width direction (X-direction) on vertex,

Above-mentioned non-set out region has bottom in the position more against the top than the center line of above-mentioned magic tape, and from the bottom court The interval in body width direction (X-direction) is gone to be gradually expanded to the up and down direction of center line,

Above-mentioned non-set out region is continuously formed in main body longitudinal direction (Y-direction), and above-mentioned non-set out region is spaced in Place more against the top than the center line of magic tape becomes most narrow.

68 > of <

Such as the disposable diaper of any one of above-mentioned 67 > of < 1 > to <, wherein the engagement of above-mentioned 2nd weak engaging zones Intensity is 5% or more and the 70% or less of the bond strength of above-mentioned 1st engaging zones, more preferably 20% or more and 50% or less Bond strength.

69 > of <

Such as the disposable diaper of any one of above-mentioned 68 > of < 1 > to <, wherein above-mentioned non-set out region is relative to above-mentioned The area in the retractility side flap region Chong Die with above-mentioned magic tape be 10% or more and 50% hereinafter, preferably 15% or more and 40% or less.

Industrial utilizability

(the 1st invention) according to the present invention provides one kind magic tape and side flap when wear diaper and is not likely to produce substrate and break Disposable diaper bad and damaged, that use feeling improves.

According to the present invention, one kind is provided when wearing diaper, and the outer peripheral edge portion of retractility side flap is easily opposite towards skin Surface side, the disposable diaper that use feeling improves.

Claims

1. a kind of disposable diaper, it is characterised in that:

Absorbent main body including lengthwise, the absorbent main body of the lengthwise include the absorber of liquid retainability, are configured at the suction The skin of acceptor is with respect to the positive dough sheet of surface side and is configured at the back sheet of the non-skin of the absorber with respect to surface side, and is divided into and wears When positioned at wearer veutro veutro portion, positioned at back side drosal part and be configured between the veutro portion and the drosal part Crotch,

It is separately installed in the both sides of the one end of the longitudinal direction of the absorbent main body and extends on the outside of width direction Retractility side flap, install in the retractility side flap along the outside portion of main body longitudinal direction and prolong on the outside of oriented width direction The magic tape of stretching,

The magic tape is installed on the non-skin opposite face of the retractility side flap,

The magic tape from the lateral border along main body longitudinal direction of the retractility side flap the absorbent main body side every 1st engaging zones and the retractility flank chip bonding of the compartment of terrain via utilization bonding agent engagement are opened,

Between the 1st engaging zones and the lateral border of the retractility side flap, throughout the master of the retractility side flap Body longitudinal direction be endlong formed continuously the magic tape and non-set out region that the retractility side flap is not engaged or The weak engaging zones of person the 2nd, the 2nd weak engaging zones are adjacently matched more leaning on the outside of width direction than the 1st engaging zones It sets, and bond strength is weaker than the 1st engaging zones,

Interval between the both sides of the edge of non-set out region on the direction parallel with width direction, described, in main body long side side To both ends be greater than main body longitudinal direction central portion.

2. disposable diaper as described in claim 1, it is characterised in that:

1st engaging zones are engaged using bonding agent, and are engaged by multiple sealing joint portions, the multiple sealing engagement Portion is by being formed using any one of crimping processing, heat sealing or the ultrasonic sealing function of embossing.

3. disposable diaper as described in claim 1, it is characterised in that:

In the 2nd weak engaging zones, the multiple sealings only formed and with embossing processing, heat sealing or ultrasonic sealing function are connect The engagement of conjunction portion.

4. disposable diaper as claimed in claim 3, it is characterised in that:

The 2nd weak engaging zones include the multiple sealing joint portion and are configured between the adjacent sealing joint portion Disengaged portion.

5. the disposable diaper as described in claim 3 or 4, it is characterised in that:

A part sealing joint portion in multiple sealing joint portions of the 2nd weak engaging zones is across the retractility side flap Along main body longitudinal direction lateral border and extend on the outside of width direction.

6. disposable diaper as described in claim 3 or 4, it is characterised in that:

Configuration in the case where stretching the magic tape when wearing, in multiple sealing joint portions of the 2nd weak engaging zones In on the outside of width direction and near 1 sealing joint portion of crotch side, the tilt angle of tilt angle and the 1st imaginary line It is substantially uniform, wherein the 1st imaginary line links intersection point and the institute of the crotch side of the retractility side flap and the magic tape State the intersection point of the crotch side of retractility side flap and the absorbent main body.

7. disposable diaper as described in any one of claims 1 to 4, it is characterised in that:

The retractility side flap is in the non-flesh for being located at skin surface side opposite with non-skin is located at respect to the skin lateral plate of surface side The elastomeric element of multiple filiforms of the state extended along body width direction is fixed between skin lateral plate and is formed, and the described 1st connects It is Chong Die with a part of the fixation end in the outside of the elastomeric element in the retractility side flap to close region.

8. disposable diaper as claimed in claim 7, it is characterised in that:

The retractility side flap is that arranging fixation is multiple between skin lateral plate formed by non-woven fabrics covers. and non-skin lateral plate The elastomeric element and formed.

9. disposable diaper as claimed in claim 7, it is characterised in that:

The width or diameter for being configured at the Filamentous elastomeric element of the retractility side flap are 0.1mm or more 2mm or less.

10. disposable diaper as claimed in claim 7, it is characterised in that:

The number for being configured at the Filamentous elastomeric element of the retractility side flap is 1 or more 25 or less.

11. disposable diaper as claimed in claim 7, it is characterised in that:

Stress when elongation to the elongation 100% of the elastomeric element of the filiform is 0.1N or more 1N 1 below Filamentous bullet Property component be arranged and fix with the state that is extended in the range below of elongation 50% or more and 300%.

12. disposable diaper as described in any one of claims 1 to 4, it is characterised in that:

The retractility side flap use is arranged between skin lateral plate formed by non-woven fabrics covers. and non-skin lateral plate and is fixed with The complex of elastomer film or the mesh being made of elastomer.

13. disposable diaper as claimed in claim 12, it is characterised in that:

The retractility side flap for being fixed with elastomer film or the mesh being made of elastomer is arranged, will be extended to elongation The stress of every 25mm width when rate 100% is 3N/25mm or more and 25N/25mm mesh below is in elongation 50% Above and the state of 300% range below elongation is arranged fixed and is formed.

14. disposable diaper as claimed in claim 7, it is characterised in that:

The retractility side flap, which has, is fixed on the elastomeric element of multiple filiforms between skin lateral plate and non-skin lateral plate Adhesive layer, the adhesive layer include: the main body side bonding agent that the end side of the absorbent main body side of each elastomeric element is fixed Layer；By the outside adhesive layer that the end side of the outside portion side of the side flap of each elastomeric element is fixed；Be configured at the main body The intermediate adhesive layer fixed between side bonds oxidant layer and the outside adhesive layer and by two pieces.

15. disposable diaper as claimed in claim 14, it is characterised in that:

Region of the intermediate adhesive layer between main body side adhesive layer and outside adhesive layer is provided with multiple, and centre is viscous It connects oxidant layer width in diaper and is less than any one of described two adhesive layer, and discontinuously match in intermediate region in width direction It sets.

16. the disposable diaper as described in claim 14 or 15, it is characterised in that:

The main body side adhesive layer, outside adhesive layer and intermediate adhesive layer and each elastomeric element are across in longitudinal direction Extend, throughout the overall length of the longitudinal direction of retractility side flap.

17. disposable diaper as claimed in claim 14, it is characterised in that:

In the retractility side flap, the elastic components contract under natural conditions, be formed on the two sides of side flap Multiple pleats, each pleat are formed extended at both sides in a manner of intersecting with multiple elastomeric elements in longitudinal direction, are formed in the pleat of side flap, are Between the main body side adhesive layer and the outside adhesive layer, by two pieces of contraction of elastomeric element in each non-adhesive Region is convex to the direction protuberance left from elastomeric element, be formed as concavity towards elastomeric element in each intermediate adhesive layer and It is formed, there is concaveconvex shape.

18. disposable diaper as described in any one of claims 1 to 4, it is characterised in that:

The length in longitudinal direction for the retractility side flap in overlapping region that the retractility side flap and magic tape overlap Spend the length in longitudinal direction for the magic tape being longer than in the engaging zones of the overlapping.

19. disposable diaper as claimed in claim 18, it is characterised in that:

The overlapping region is 1.2 times or more and 3.5 times or less of the length in longitudinal direction of magic tape.

20. disposable diaper as claimed in claim 18, it is characterised in that:

The overlapping region is relative to the gross area of retractility side flap when overlooking retractility side flap under natural conditions 10% or more and 50% range below.

21. disposable diaper as described in any one of claims 1 to 4, it is characterised in that:

The magic tape for being set to the outside portion of the retractility side flap includes with substrate sheets and in the width direction with substrate sheets Outside there is the hook side parts of multiple engaging protrusions, magic tape is using preceding folding, and expansion uses when in use, and magic tape opening up For in the longer rectangle of width direction, magic tape is to be formed as band substrate identical with the plan view shape of magic tape under open state The outside stay hook surface parts of the width direction of piece and formed.

22. disposable diaper as described in any one of claims 1 to 4, it is characterised in that:

In the both sides along the long side direction of absorbent main body, sidepiece sheet is configured with across positive dough sheet respectively.

23. disposable diaper as claimed in claim 22, it is characterised in that:

Fixation, side is arranged throughout side whole region along the long side direction with respect to surface side in the skin of positive dough sheet in the sidepiece sheet The medial end of the width direction of portion's piece becomes free end, is matched near the free end of crotch with the state extended in longitudinal direction If being fixed with three-dimensional fold formation elastomeric element, when wearing, by the convergent force of the elastomeric element, provided from free end The part of width is left from positive dough sheet and forms three-dimensional fold, in turn, in the both sides along the long side direction of absorbent main body, divides The sidepiece sheet extended on the outside of oriented width direction and back sheet are not engaged and forms wing flap portion, and elastic portion is used in leg creases formation Part passes through the contraction of the elastomeric element when wearing with the wing flap portion that crotch is fixed in the state arranging extended in longitudinal direction Power and form leg creases.

24. disposable diaper as described in claim 1, it is characterised in that:

The length of the outside edge along main body longitudinal direction of the retractility side flap is formed as be longer than the magic tape The length of main body longitudinal direction in 1 engaging zones.

25. the disposable diaper as described in any one of claim 2~4, it is characterised in that:

The sealing joint portion of 1st engaging zones and the sealing joint portion of the 2nd weak engaging zones are to pass through Heat sealing or ultrasonic sealing function and formed.

26. the disposable diaper as described in any one of claim 2~4, it is characterised in that:

1st engaging zones include: the 1st engaging zones that welding has the magic tape and the retractility side flap The sealing joint portion；With the disengaged portion of magic tape described in no welding and the retractility side flap.

27. the disposable diaper as described in any one of claim 2~4, it is characterised in that:

1st engaging zones have the sealing joint portion of the 1st engaging zones of multiple small shapes in main body long side Direction be regularly arranged made of sealing joint portion column, the sealing joint portion be listed in body width direction be arranged with it is multiple, it is adjacent The 1st engaging zones the sealing joint portion each other by body width direction not side by side in a manner of be in staggered configuration.

28. disposable diaper as described in any one of claims 1 to 4, it is characterised in that:

The place more against the top than the center line of the magic tape extended in longitudinal direction that be spaced in of the non-set out region becomes most It is narrow.

29. disposable diaper as described in any one of claims 1 to 4, it is characterised in that:

The positive dough sheet and outer layer composite sheet be covered each by the skin opposite face of the absorber entire surface and non-skin it is opposite The entire surface in face, and extend from the periphery of the absorber, in the part extended, it is fixed by bonding agent or welding.

30. disposable diaper as described in any one of claims 1 to 4, it is characterised in that:

The retractility side flap is that the elastomeric element of the multiple filiforms for the state that will be extended in body width direction is fixed in place In skin with respect to the skin lateral plate of surface side with formed between the non-skin lateral plate of the opposite surface side of non-skin,

The elastomeric element is fixed on institute via with the multiple bonding agents extended in main body longitudinal direction that the elastomeric element intersects It states between skin lateral plate and the non-skin lateral plate, and at the position for not configuring the elastomeric element, the skin lateral plate and should Non- skin lateral plate is directly engaged via bonding agent each other.

31. disposable diaper as claimed in claim 30, it is characterised in that:

For fix multiple bonding agents of the elastomeric element with all elastic element crosswise that extends in body width direction, Extend and spread the overall length of the main body longitudinal direction of the retractility side flap in main body longitudinal direction.

32. disposable diaper as claimed in claim 30, it is characterised in that:

The fixation of the retractility side flap, which removes, utilizes bonding agent for fixing the elastomeric element and by skin lateral plate and non- Other than the fixation for the bonding agent that skin lateral plate is joined directly to each other, also combines and fixed using the welding of heat sealing to implement.

33. disposable diaper as claimed in claim 30, it is characterised in that:

The skin lateral plate of the retractility side flap has the body width direction of the elastomeric element than multiple filiforms The fixed end in outside to the extension extended on the outside of body width direction, the non-skin lateral plate similarly has than multiple silks Extension of the fixed end in the outside in the body width direction of the elastomeric element of shape to extension on the outside of body width direction.

34. disposable diaper as claimed in claim 26, it is characterised in that:

The sealing joint portion of 1st engaging zones only includes have angled lengthwise relative to main body longitudinal direction 1 sealing joint portion,

In the 1st engaging zones, by the 1st sealing joint portion main body longitudinal direction discontinuously configures and formed in main body The sealing joint portion group that longitudinal direction extends forms two column in body width direction,

The sealing joint portion of adjacent the 1st engaging zones becomes disengaged portion each other.

35. disposable diaper as claimed in claim 26, it is characterised in that:

The sealing joint portion of 1st engaging zones only includes the 3rd of the lengthwise extended parallel to body width direction Joint portion is sealed,

In the 1st engaging zones, the 3rd sealing joint portion is discontinuously configured in main body longitudinal direction and is formed as to master The sealing joint portion group protruded on the outside of body width direction forms two column in body width direction,

1st engaging zones become prolonging along the long side direction in the magic tape by two column sealing joint portion groups The position for the center line stretched becomes the shape to protrusion on the outside of body width direction on vertex,

The non-set out region becomes the shape to recess on the outside of body width direction,

The non-set out region goes main body wide from the up and down direction of bottom towards the center line of the center line for being located at the magic tape The interval in degree direction is gradually expanded,

The non-set out region is continuously formed in main body longitudinal direction, which is spaced in the non-set out region The both ends of main body longitudinal direction expand.

36. the disposable diaper as described in claims 1 or 24, it is characterised in that:

The magic tape is only fixed by bonding agent with the retractility side flap,

1st engaging zones include the magic tape being engaged using bonding agent and the bonding agent of the retractility side flap connects Conjunction portion,

The bonding agent joint portion continuously spreads the overall length of the main body longitudinal direction of the magic tape in main body longitudinal direction,

1st engaging zones are become in the extending along the long side direction of the magic tape by the bonding agent joint portion The position of heart line becomes the shape to protrusion on the outside of body width direction on vertex,

37. the disposable diaper as described in claims 1 or 24, it is characterised in that:

The magic tape is only fixed by bonding agent with the retractility side flap,

1st engaging zones are become in extending along the long side direction than the magic tape by the bonding agent joint portion Center line position against the top becomes the shape to protrusion on the outside of body width direction on vertex,

The non-set out region has bottom in the position more against the top than the center line of the magic tape, from the bottom towards center The up and down direction of line goes to the interval in body width direction to be gradually expanded,

The non-set out region is continuously formed in main body longitudinal direction, and the non-set out region is spaced in than in magic tape Heart line place against the top becomes most narrow.

38. disposable diaper as described in any one of claims 1 to 4, it is characterised in that:

The bond strength of the 2nd weak engaging zones is 5% or more and 70% or less of the bond strength of the 1st engaging zones Bond strength.

39. disposable diaper as described in any one of claims 1 to 4, it is characterised in that:

The area in the non-set out region region Chong Die with the magic tape relative to the retractility side flap be 10% with It is upper and 50% or less.