CN104768512B

CN104768512B - Disposable diaper

Info

Publication number: CN104768512B
Application number: CN201380058476.4A
Authority: CN
Inventors: 木崎康泰; 森田进之介; 齐藤数马; 万田俊明; 一万田俊明; 植田章之
Original assignee: Kao Corp
Current assignee: Kao Corp
Priority date: 2012-11-09
Filing date: 2013-11-05
Publication date: 2017-07-11
Anticipated expiration: 2033-11-05
Also published as: TW201434453A; WO2014073511A1; JP2014111042A; CN104768512A; TWI601517B; JP6205244B2

Abstract

Disposable diaper (1) of the invention includes：Absorbent main body (2), the absorbent main body include absorber (23), configuration absorber inner surface side skin lateral plate (21) and configure absorber outer surface side non-skin lateral plate (22)；With the side flap portion (3) of the retractility of the sidepiece installed in absorbent main body, wherein, side flap portion (3), leading section is provided with pull stap (4), and including two pieces (31, and the elastic component (33) that is fixed between two pieces 32), and including will the end of absorbent main body (2) side of elastic component (33) or its main body side bond layer (35) fixed nearby and will the end of leading section (3a) side in the side flap portion of elastic component (33) or its front bond layer (36) fixed nearby, the upper side engagement portion (66) that side flap portion (3) engages with the piece (31) that will be configured in inner surface side with skin lateral plate (21), upper side engagement portion (66) is Chong Die on diaper thickness direction with main body side bond layer (35).

Description

Disposable diaper

Technical field

The present invention relates to a kind of disposable diaper.

Background technology

Previously, it is known to a kind of disposable diaper of deploying type, it was working as in the absorbent main body including absorber Configuration is provided with the flexible retractility of the width of the absorbent main body in the part of the back side of wearer when wearing (with reference to patent document 1,2) in side flap portion.

This kind of disposable diaper can manufacture side flap portion by the step different from absorbent main body, and be added Manufactured in absorbent main body, therefore, it is possible to suppress the usage amount of material that is used in side flap portion and by the material produce it is useless Gurry, it is more excellent at the aspect of environment or cost.

However, stretching be arranged on the pull stap of leading section in side flap portion etc. to wear diaper when, side flap portion with The junction surface of absorbent main body and its near, or side flap portion and pull stap junction surface and its near, easily produce and be broken Or rupture.

In order to eliminate this kind of unfavorable condition, in above-mentioned patent document 1, propose in side flap portion and absorbent main body Or pull stap overlap part turnover and formed strengthen nonwoven layer, and by the reinforcement nonwoven layer be bonded on absorbent main body and On pull stap.Additionally, in patent document 2, it is stipulated that the edge of the crotch side with base material of pull stap is with configuration in side flap portion Most by crotch side elastic component position relationship.

Prior art literature

Patent document

Patent document 1：Japanese Patent Laid-Open 2008-295836 publications

Patent document 2：Japanese Patent Laid-Open 2012-115361 publications

The content of the invention

However, in patent document 1, the sheet material that will constitute side flap portion is integrally integratedly turned down and is formed with above-mentioned adding The end and side flap portion of nonwoven layer, therefore the absorbent main body side in side flap portion by force become with the rigidity at the junction surface of pull stap Obtain too high, and the bond layer of bonding interlayer also increases, therefore tend to interfere with flexibility and gas permeability of diaper etc..

Additionally, present inventors found that：Be provided with the both sides of absorbent main body side flap portion composition it is disposable Even if diaper stretches the excellent strength during side flap portion to projected direction, but works as the crotch portion being applied with as made side flap portion When such power is significantly opened in the edge of side with the angle of the side edge part of absorbent main body, the root of the lower edge in side flap portion Easily easily tear nearby.

The present invention provides a kind of disposable diaper, and it includes：Absorbent main body, the absorbent main body include absorber, Configure the skin lateral plate and the non-skin lateral plate for configuring the outer surface side in the absorber in the inner surface side of the absorber；And peace Retractility side flap portion on the sidepiece of the one or both sides of the absorbent main body.Above-mentioned side flap portion, sets in leading section Pull stap is equipped with, and the elastic component between two fins is fixed on including two fins and with the state for extending, and including inciting somebody to action The end of the above-mentioned absorbent main body side of the elastic component or its main body side bond layer fixed nearby and by the elastic component Above-mentioned side flap portion leading section side end or its front bond layer fixed nearby.Additionally, above-mentioned side flap portion With the upper side engagement portion for engaging the configuration in above-mentioned two fin with above-mentioned skin lateral plate in the fin of inner surface side, and should Upper side engagement portion is Chong Die on the thickness direction of diaper with aforementioned body side bonds oxidant layer.

Brief description of the drawings

Fig. 1 is the expansion top view as the disposable diaper of first embodiment of the invention from the observation of positive dough sheet side.

Fig. 2 is the stereogram of the wearing effect for representing the disposable diaper shown in Fig. 1.

Fig. 3 is to represent the side flap portion of the disposable diaper shown in Fig. 1 and the expansion top view near it.

Fig. 4 is the IV-IV line profiles of Fig. 3.

Fig. 5 be represent second embodiment of the present invention side flap portion and its near profile (equivalent to Fig. 4's Figure).

Fig. 6 be represent third embodiment of the present invention side flap portion and its near profile (equivalent to Fig. 4's Figure).

Fig. 7 be represent the 4th implementation method of the invention side flap portion and its near profile (equivalent to Fig. 4's Figure).

Fig. 8 be represent the 5th implementation method of the invention side flap portion and its near profile (equivalent to Fig. 4's Figure).

Fig. 9 is the stereogram of of the manufacture method in the side flap portion for representing first embodiment.

Figure 10 (a) and Figure 10 (b) are the explanatory diagrams of the assay method of rupture strength.

Figure 11 be rupture strength measure in the schematic diagram of cupping machine that uses.

Specific embodiment

The present invention is the disposable diaper on being not likely to produce fracture near a kind of root of the lower edge in side flap portion.

Hereinafter, for the present invention, simultaneously based on preferred embodiment and referring to the drawings, simultaneously illustrate.

The disposable diaper 1 (hereinafter also referred to diaper 1) of first embodiment of the invention as shown in figure 1, including：Absorb Property main body 2, it include absorber 23, configuration the absorber 23 inner surface side skin lateral plate 21 and configuration in the absorber The non-skin lateral plate 22 of 23 outer surface side；With the side flap portion 3,3 installed in the both sides of the absorbent main body 2.

Absorbent main body 2 as shown in figure 1, the shape with lengthwise, and with the veutro when wearing positioned at wearer Veutro portion A, positioned at wearer dorsal part drosal part B and the crotch C positioned at crotch part.Absorbent main body 2 as shown in figure 1, Sprawling to be oblong-shaped in the state of plane.Side flap portion 3,3 is outside with the both sides edge respectively from absorbent main body 2 The mode that side protrudes is arranged on the both sides of the absorbent main body 2 in drosal part B.

The length direction of disposable diaper 1 is the Y-direction in figure, is equidirectional with the length direction of absorbent main body 2. The width of disposable diaper 1 is the X-direction in figure, is equidirectional with the width of absorbent main body 2.Following In explanation, also by with the direction corresponding with diaper length direction of the member of formation of the length direction of diaper or the diaper referred to as Be Y-direction, by with the direction corresponding with diaper width direction of the member of formation of the width of diaper or the diaper referred to as It is X-direction.Additionally, the inner surface of the member of formation of diaper or diaper is the face towards the skin side of wearer when wearing, urine The outer surface of the member of formation of cloth or diaper is the face towards the non-skin side that the skin with wearer is opposition side when wearing.

Absorbent main body 2 as shown in Figure 1 and Figure 4, including formed absorbent main body 2 inner surface skin lateral plate 21, shape Into the absorption of the non-skin lateral plate 22 and the liquid retentivity being arranged between the two pieces 21,22 of the outer surface of absorbent main body 2 Body 23.

Skin lateral plate 21 includes the positive dough sheet 21a of liquid permeability and is bonded on a pair of stereo enclosures formation use of its both sides Piece 21b, 21b.

The positive dough sheet 21a of liquid permeability is configured in absorbent main body 2 in the way of the total length throughout absorbent main body 2 The central portion of width.Stereo enclosure formation piece 21b, 21b configure the length in absorbent main body 2 along its length respectively The both sides in direction.Stereo enclosure formation piece 21b, 21b is bonded on positive dough sheet 21a via bond layer 68 and 69, and just Dough sheet 21a constitutes skin lateral plate 21 together.

Bond layer 68 is formed in the substantially total length of absorbent main body 2, but bond layer 69 is arranged on veutro portion A and the back of the body Sidepiece B, is on the other hand not located at crotch C.

Edge should near the ora terminalis on the inside of the width (X-direction) of absorbent main body 2 for each stereo enclosure formation piece 21b Ora terminalis has stereo enclosure formation elastic component 25, when wearing, by the convergent force of the elastic component 25, in making crotch C The part positioned at the Rack located in the inner part than above-mentioned bond layer 68 leave positive dough sheet 21a and form stereo enclosure.

Non- skin lateral plate 22 is made up of composite sheet, the composite sheet have liquid impermeability or liquid hardly possible permeability (including Water-repellancy) leakage prevention sheet 22a and the outer layer nonwoven of the outer surface side of leakage prevention sheet 22a is bonded on via outer layer bond layer 61 Cloth 22b.Outer layer non-woven fabrics 22b is equal with the plan view shape of absorbent main body 2, and leakage prevention sheet 22a is as shown in figure 4, except the width of X-direction Beyond smaller, there is identical plan view shape with outer layer non-woven fabrics 22b.Made outside diaper by the presence of outer layer non-woven fabrics 22b The skin sense of touch on surface is good.

Additionally, the elastic component 26 of leg creases formation is pressed from both sides by the stereo enclosure formation two-layer structure part of piece 21b And part of the configuration of absorbent main body 2 around the leg of length direction both sides is fixed on elongation state.

Diaper 1 is as shown in figure 1, be formed as symmetrical relative to the length direction Central Line CL of absorbent main body 2.Cause This, composition on side flap portion 3,3 and they and absorbent main body 2 and the juncture of pull stap 4, mainly with Fig. 1's Illustrated as a example by the side flap portion in left side, the side flap portion on right side is except as also identical in addition to symmetrical.

The side flap portion 3 of diaper 1 is as shown in figure 3, sprawling to be rectangle in the state of plane.Additionally, side flap portion 3 As shown in figure 4, two fins 31,32 including non-woven fabrics manufacture and solid with the state that extend in diaper width direction (X-direction) It is scheduled on the multiple elastic components 33 between two fins 31,32.Leading section 3a in side flap portion 3 is provided with and is used to side flap Portion 3 anchors at the pull stap 4 of other positions (taking region 5 in the outer surface for being for example arranged on veutro portion A).Side flap portion 3 The end that leading section 3a refers to the side of absorbent main body 2 in side flap portion 3 is opposition side.On the other hand, the absorption in side flap portion 3 The end (hereinafter also referred to base end part 3b) of property main body side is bonded on absorbent main body 2.

Elastic component 33 is configured along the width (X-direction) of diaper 1 respectively.Additionally, the multiple bullets in each side flap portion 3 Property component 33 in the length direction (Y-direction) of diaper, roughly equal compartment of terrain configuration is set.

The side flap portion 3 of the diaper 1 of first embodiment includes main body side bond layer 35, front end as shown in Figure 3 and Figure 4 Side bonds oxidant layer 36 and multiple middle bond layers 37.These bond layers 35,36,37 are all in diaper length direction (Y side To) extend and formed.Additionally, in these bond layers 35,36,37, multiple elastic components 33 are by constituting each bond layer Bonding agent be fixed on two fins 31,32 between, and being not provided with the position of elastic component 33, two fins 31,32 that This is directly engaged by constituting the bonding agent of each bond layer.Furthermore, in figure 3, main body side bond layer 35, front glues Connect oxidant layer 36 and multiple middle bond layers 37 are represented by the hachure of the oblique line towards the lower-left of the figure.

Main body side bond layer 35 is arranged on the side of absorbent main body 2 on the bearing of trend in side flap portion 3, and each bullet of fixation The end of the side of absorbent main body 2 of property component 33 or its near.Front bond layer 36 is arranged on the extension side in side flap portion 3 Upward leading section 3a sides, and the end of the leading section 3a sides in the side flap portion 3 of each elastic component 33 of fixation or its near.

As shown in figure 4, main body side bond layer 35 does not reach the ora terminalis of the side of absorbent main body 2 in side flap portion 3, side Tab portion 3 is turning into the main body side non-adhesive region of disengaged condition between base end part 3b has fin 31,32.Additionally, front Bond layer 36 does not reach the ora terminalis of the side of pull stap 4 in side flap portion 3, side flap portion 3 leading section 3a have fin 31, Front non-adhesive region as disengaged condition between 32.The base end part 3b in the side flap portion 3 in present embodiment is included in Entirety or a part and the main body side non-adhesive region of the part of main body side bond layer 35, flank are provided between fin 31,32 The leading section 3a in piece portion 3 be provided between being included in fin 31,32 part of front bond layer 36 entirety or a part and Front non-adhesive region.

Main body side bond layer 35 of the middle bond layer 37 on the bearing of trend in side flap portion 3 and front bonding agent Region between layer 36 is that zone line 30 is provided with multiple.The width of middle bond layer 37 is less than above-mentioned two bond layer 35th, in 36 any one, and be intermittently formed multiple in zone line 30.Main body side bond layer 35 and front end conversely speaking, It is wider than middle bond layer 37 that side bonds oxidant layer 36 is formed as width.On the bearing of trend in side flap portion 3, in main body side bonds Middle bond layer 37 between oxidant layer 35 and the middle bond layer 37 being adjacent, adjacent is to each other and front is viscous Connect between oxidant layer 36 and the middle bond layer 37 that is adjacent, be respectively formed with the non-adhesive region for being configured without bonding agent 38.In the diaper 1 of present embodiment, the bearing of trend in side flap portion 3 is consistent with diaper width direction.

Main body side bond layer 35, front bond layer 36 and middle bond layer 37 with extend in X-direction The mode that multiple (preferably more than 3) elastic components 33 intersect extends in diaper length direction (Y-direction).Main body side bonding agent Layer 35, front bond layer 36 and middle bond layer 37 are preferably handed over with all elastic component 33 extended in X-direction The mode of fork diaper length direction (Y-direction) extend, and then preferably over side flap portion 3 upper lower edge 3u, 3d between total length.

Similarly, handed over with multiple (preferably more than the 3) elastic component 33 extended in X-direction in non-adhesive region 38 The mode of fork extends in diaper length direction (Y-direction).Non-adhesive region 38 it is also preferred that with X-direction extend it is all elastic The mode that component 33 intersects extends in diaper length direction (Y-direction), and then preferably over upper lower edge 3u, the 3d in side flap portion 3 Between total length.

The side flap portion 3 of the diaper 1 of first embodiment is as shown in figure 4, absorption in diaper width direction (X-direction) Property the side of main body 2, with the fin 32 and skin that are configured among two fins 31,32 that will constitute side flap portion 3 in inner surface P sides The upper side engagement portion 66 of the engagement of lateral plate 21.More specifically, upper side engagement portion 66 will constitute side flap portion 3 two fins 31, The fin 32 of configuration in 32 in inner surface P sides connects with the stereo enclosure formation piece 21b for the part for constituting skin lateral plate 21 Close.In upper side engagement portion 66, a face of fin 32 is another with the part that fin 31 is engaged via main body side bond layer 35 One face engages via inner surface side bond layer 66a with stereo enclosure formation piece 21b.That is, the upper side engagement in side flap portion 3 Portion 66 is Chong Die on the thickness direction of diaper with main body side bond layer 35.

Additionally, the side flap portion 3 of the diaper 1 of first embodiment is as shown in figure 4, in diaper width direction (X-direction) The side of absorbent main body 2, with by the configuration in two fins 31,32 for constituting side flap portion 3 outer surface Q sides fin 31 The lower side engagement portion 62 engaged with non-skin lateral plate 22.More specifically, in lower side engagement portion 62, one in fin 31 Another face for the part that face engages via main body side bond layer 35 with fin 32 is via outer surface side bond layer 62a and structure Leakage prevention sheet 22a and/or outer layer non-woven fabrics 22b into non-skin lateral plate 22 are engaged.That is, the lower side engagement portion 62 in side flap portion 3 with Main body side bond layer 35 is overlapped on the thickness direction of diaper.

The side flap portion 3 of the diaper 1 of first embodiment is as shown in figure 4, the upper side engagement portion 66 and main body in side flap portion 3 Side bonds oxidant layer 35 is overlapped on the thickness direction of diaper, lower side engagement portion 62 and the main body side bond layer 35 in side flap portion 3 Overlapped on the thickness direction of diaper, thus go up side engagement portion 66, main body side bond layer 35 and lower side engagement portion 62 in diaper Thickness direction on overlap.

When enabling a wearer to wear the diaper 1 of first embodiment, stretching pull stap 4 and stretch side flap portion 3 pulling In the state of length, the adhered portion 41 of the pull stap 4 is pressed anchor at the outer surface Q that is arranged at veutro portion A take region 5.

In the disposable diaper of the deploying type including side flap portion, in the face stretchable fastener of child one for activity with one In the case that face is worn, or vigorous motion because of the child in dress etc. and offside tab portion applies as made side flap portion When lower edge significantly opens such power with the angle, θ (reference picture 3) of the side edge part of absorbent main body, in figure 3 with symbol K Easily torn near the root of the lower edge in the side flap portion of expression.

On the other hand, the disposable diaper 1 according to first embodiment, as described above, the upside by making side flap portion 3 Junction surface 66 is overlap with main body side bond layer 35, is not likely to produce this kind of tear.That is, the position as shown in above-mentioned symbol K that The position that the stress of sample is easily concentrated, multiple pieces are formed with laminated arrangement by upper bond portion 66 and main body side bond layer 35 The position of integration, thus the fixed part for absorbent main body 2 in side flap portion and side flap portion obtain sufficiently strong Degree.On the other hand, if bonding main body side bond layer 35 in fin 32 and position and engagement that intensity is improved are vertical Body pad formation piece 21b (skin lateral plate 21) and between position that intensity is improved, it is strong that generation is only made up of fin 32 The relatively low position of degree, side flap portion can become easily disrumpent feelings.

And, the upper side engagement portion 66 of the diaper 1 of first embodiment is by constituting inner surface side bond layer 66a Fin 32 and stereo enclosure formation piece 21b (skin lateral plate 21) are engaged and formed by bonding agent, therefore contact the position of skin Put and be not easy to be hardened.

Additionally, the disposable diaper 1 according to first embodiment, as described above, the lower side engagement portion 62 in side flap portion 3 with Main body side bond layer 35 is also overlapped.Therefore, can more reliably prevent from being produced near the root of the lower edge in side flap portion 3 Raw tear.That is, the position that stress is easily concentrated the position as shown in above-mentioned symbol K, forms multiple pieces and passes through downside The position of junction surface 62 and main body side bond layer 35 with laminated arrangement integration, thus in side flap portion 3 and side flap portion 3 The fixed part for absorbent main body 2 obtain more fully intensity.

Additionally, the disposable diaper 1 according to first embodiment, as described above, upper side engagement portion 66, main body side bonding agent Layer 35 and lower side engagement portion 62 are overlapped on the thickness direction of diaper.Therefore, the consolidating relative to absorbent main body 2 of side flap portion 3 Fixed balance is good, so as to obtain more fully intensity.

From for the viewpoint for further preventing from producing tear near the root of the lower edge in side flap portion 3, upper side engagement The width (X-direction) in diaper 1 at the position Chong Die on the thickness direction of diaper 1 with main body side bond layer 35 of portion 66 On length L1 (reference picture 4, hereinafter also referred to " overlap length L1 ") be preferably more than 1mm, more preferably more than 3mm, additionally, Preferably below 20mm, more preferably below 17mm.Additionally, the width L2 (reference picture 4) of the X-direction of main body side bond layer 35 Preferably more than 1mm, more preferably more than 3mm, furthermore it is preferred that being below 20mm, more preferably below 17mm.Above-mentioned overlap is long Degree ratios (L1/L2) of the L1 relative to the width L2 of the X-direction of main body side bond layer 35 is preferably more than 0.05, more preferably More than 0.15, furthermore it is preferred that be less than 1, more preferably less than 0.85, for example, it is preferable to be less than more than 0.05 1, more preferably Less than more than 0.15 0.85.

In the present embodiment, as shown in figure 4, inner surface side bond layer 66a and lower side engagement portion 62 are more viscous than main body side The end for connecing the diaper width direction center side of oxidant layer 35 extends to diaper width direction center side.By this composition, pleat is reduced, So as to effectively prevent from being applied to the disrumpent feelings of the side flap portion caused by the position of pleat of being formed with because of power.

From for the viewpoint for further preventing from producing tear near the root of the lower edge in side flap portion 3, upper side engagement The width L3 (reference picture 4) of the X-direction of portion 66 and inner surface side bond layer 66a is preferably more than 1mm, more preferably 3mm with On, furthermore it is preferred that being below 20mm, more preferably below 17mm.Above-mentioned overlap length L1 is relative to upper side engagement portion 66 and interior The ratio (L1/L3) of the width L3 of the X-direction of face side bond layer 66a is preferably more than 0.05, more preferably more than 0.15, this Outward, preferably less than 1, more preferably less than 0.85, for example, it is preferable to be less than more than 0.05 1, more preferably more than 0.15 0.85 Below.

Additionally, from for the viewpoint for further preventing from producing tear near the root of the lower edge in side flap portion 3, under The position Chong Die on the thickness direction of diaper with main body side bond layer 35 of side engagement portion 62 in diaper width direction (X side To) on length L4 (reference picture 4, hereinafter also referred to " overlap length L4 ") be preferably more than 1mm, more preferably more than 3mm, this Outward, preferably below 20mm, more preferably below 17mm.Additionally, the X of lower side engagement portion 62 and outer surface side bond layer 62a The width L5 (reference picture 4) in direction is preferably more than 1mm, more preferably more than 3mm, furthermore it is preferred that be below 50mm, more preferably For below 45mm.Above-mentioned overlap length L4 is relative to lower side engagement portion 62 and the width of the X-direction of outer surface side bond layer 62a The ratio (L4/L5) of L5 is preferably more than 0.02, preferably more than 0.06, furthermore it is preferred that be less than 1, more preferably less than 0.5, Furthermore it is preferred that being less than more than 0.02 1, more preferably less than more than 0.06 0.5.

Additionally, more preferably going up side engagement portion 66, main body side bond layer 35 and lower side engagement portion 62, all (entirety) is urinating On the thickness direction of cloth 1 overlap, above-mentioned three all on the thickness direction of diaper overlap part in diaper width direction The length or ratio of (X-direction), with the preferred length of above-mentioned overlap length L1 or than identical.

In the diaper 1 of first embodiment, the configuration in two fins 31,32 in side flap portion 3 is constituted in outer surface The fin 31 of side, the side of absorbent main body 2 have by the piece 31 turnover bonding and formed with layers cementing oxidant layer 31a Two-layer structure part 31A (lit-par-lit structure part), and upper side engagement portion 66, main body side bond layer 35 and two-layer structure part The layers cementing oxidant layer 31a of 31A is overlapped on the thickness direction of diaper.

In the diaper 1 of first embodiment, as shown in figure 4, forming the piece 31 of two-layer structure part 31A in side flap portion 3 base end part 3b is turned down to the inner surface side of the piece 31, and the part through turning down is via layers cementing oxidant layer 31a and the piece 31 Partly overlapping and be engaged without turnover.On the other hand, constitute in two fins 31,32 in side flap portion 3 positioned at side The fin 32 of the inner surface side of tab portion 3 was not both turned down or turned on one's side without inner surface to the outer surface side of the fin 32 to be rolled over.

The two-layer structure part 31A being reinforced by the presence of layers cementing oxidant layer 31a, via main body side bond layer 35 engage with fin 32, and the part for being bonded main body side bond layer 35 of the piece 32 is protected by upper side engagement portion 66 with solid Enclose to be formed and engaged with piece 21b (skin lateral plate 21), the root thus, it is possible to more reliably prevent the lower edge in side flap portion 3 Nearby produce tear.

Additionally, in the diaper 1 of first embodiment, the two-layer structure part 31A by fin 31 in side flap portion 3 (lit-par-lit structure part) and the part that is reinforced, are engaged, thus more by outer surface side bond layer 62a with non-skin lateral plate 22 Plus reliably prevent from producing tear near the root of the lower edge in side flap portion 3.

The stereo enclosure formation of the diaper 1 of first embodiment is with piece 21b as shown in figure 4, having a piece turnover Stacking, and the two-layer structure part for being engaged its interlayer by thermal welding (omitting diagram).And, the two-layer structure part Engaged with the above-mentioned fin 32 in side flap portion 3 via inner surface side bond layer 66a in upper side engagement portion 66.Protected by by solid Enclose to be formed to be engaged with side flap portion 3 with the two-layer structure part of piece 21b and improve side flap portion 3 relative to absorbent main body 2 Bond strength.The two-layer structure part of stereo enclosure formation piece 21b can also be turn down multi-ply construction a piece of non-woven fabrics and The part that two panels is overlapped.

Additionally, the stereo enclosure formation piece 21b of the diaper 1 of first embodiment includes being bonded on the side in side flap portion 3 The two-layer structure part of tab portion side and the two-layer of the absorbent main body side engaged with positive dough sheet 21a via bond layer 68,69 Construction part, thus, makes side flap portion 3 further be improved relative to the bond strength of absorbent main body 2, and more reliably Prevent from producing tear near the root of the lower edge in side flap portion 3.Also can be in the two-layer structure part in outside and the two of inner side Between layer formations point, with 3 layers of construction part that the stereo enclosure formation piece 21b through turning down overlaps each other.

On the thermal welding that stereo enclosure formation is engaged with the interlayer of the two-layer structure part of piece 21b, for example, can make With heat sealing, ultrasonic sealing function, high frequency sealing or their combination of more than two kinds etc..Additionally, sealing pattern is preferably scatterplot shape Ground forms the dot pattern of heat-fused portion, but is not limited to this, for example, can also be to form 1 in the length direction etc. of diaper 1 Or the thread pattern or lattice-shaped pattern of multiple thread heat-fused portion etc..Additionally, simultaneously can also be schemed with sealing of more than two kinds Case, for example, also can be the two of the two-layer structure part in the outside engaged with side flap portion 3 and the inner side engaged with positive dough sheet 21a Layer construction part makes sealing pattern different.It is further possible to by the bonding agent that is configured in scatterplot shape by stereo enclosure shape Interlayer into the two-layer structure part with piece 21b is engaged.

The heat-fused portion that stereo enclosure formation is engaged with the interlayer of the two-layer structure part of piece 21b, is preferably matched somebody with somebody with sawtooth Put and be in scatterplot shape be formed with multiple, the area of each heat-fused portion is preferably 0.5mm²More than, more preferably 1.5mm²More than, Furthermore it is preferred that being 10mm²Hereinafter, more preferably 5mm²Below.Additionally, between the central point of heat-fused portion distance be preferably 5mm with Under, more preferably below 3mm, the distance that lower limit contacts with each other for heat-fused portion.Additionally, the area occupation ratio of heat-fused portion is preferably More than 2%, more preferably more than 5%, furthermore it is preferred that being less than 15%, more preferably less than 10%.The area occupation ratio of heat-fused portion (%) is the ratio (%) of the gross area of total area relative to the region that heat-fused portion is distributed of heat-fused portion.

The side flap portion 3 of the diaper 1 of first embodiment in leading section 3a as shown in figure 4, also have turning over by piece 31 The two-layer structure part 31B (lit-par-lit structure part) with layers cementing oxidant layer 31a that folded connects and formed, and by the two-layer The leading section 3a for constructing part 31B and being reinforced is engaged by connecting adhesive oxidant layer 65 with pull stap 4.

Pull stap 4 includes with base material 42 and is engaged with base material 42 with this and form the sun of the mechanicalness surface fastener of adhered portion 41 Part.And, the leading section 3a for being partially overlapping bonded on side flap portion 3 only by being constituted with base material 42 in pull stap 4. In present embodiment, engaged via connecting adhesive oxidant layer 65 between the leading section 3a and band base material 42 in side flap portion 3.As The male parts of mechanicalness surface fastener are fixed on the method on base material 42, the bonding carried out using thermal welding or bonding agent is used Etc. arbitrary joint method.

Furthermore, in the outer surface of the veutro portion A of diaper 1, being provided with makes pull stap 4, more specifically makes pull stap 4 Region 5 is taken in adhered portion 41 set.

Upper side engagement portion 66 and lower side engagement portion 62 are preferably existed with part or all with main body side bond layer 35 respectively The state (state preferably shown in Fig. 4) overlapped on the thickness direction of diaper, in the total length of the Y-direction in side flap portion 3 Extend in more than 90% length, extend more preferably in the total length of the Y-direction in side flap portion 3.

Additionally, the interlayer of the two-layer structure part 31A of upper side engagement portion 66, main body side bond layer 35 and base end part 3b sides Bond layer 31a, preferably with overlapped state (state preferably shown in Fig. 4) on diaper thickness direction, in flank Extend in the length of more than the 90% of the total length of the Y-direction in piece portion 3, more preferably prolong in the total length of the Y-direction in side flap portion 3 Stretch.

Additionally, the layers cementing oxidant layer 31a of the two-layer structure part 31B of front bond layer 36 and leading section 3a sides, It is preferred that with overlapped state (state preferably shown in Fig. 4) on diaper thickness direction, in the Y-direction in side flap portion 3 Total length more than 90% length on extend, more preferably in the total length of the Y-direction in side flap portion 3 extend.

Furthermore, in the zone line 30 in the side flap portion 3 of the disposable diaper 1 of first embodiment, middle bond layer 37 is to set non-adhesive region 38 between adjacent bond layer and formed, and under the nature of diaper 1, is passed through The contraction of elastic component 33, makes two fins 31,32 in non-adhesive region 38 be roused to the direction for leaving elastic component 33 respectively Go out, in multiple pleats (not shown) that the two sides in side flap portion 3, formation extend in the way of across multiple elastic components 33.And, should Pleat will not also be wholly absent under the wearing effect of diaper.Therefore, being hardened because of bond layer 36~37 in side flap portion 3 Part, the part being especially hardened by middle bond layer 37 is not easy to contact the skin of wearer, so as to be difficult to bring not Suitable sense.

Above-mentioned outer layer bond layer 61, main body side bond layer 35, front bond layer 36, middle bond layer 37th, layers cementing oxidant layer 31a, inner surface side bond layer 66a, outer surface side bond layer 62a, the and of connecting adhesive oxidant layer 65 Bond layer 68,69, can utilize various by one of two pieces of above-mentioned each bond layer or both are clipped After known method adhesive-applying, above-mentioned two piece is overlapped and is pressurizeed and is formed.

The grammes per square metre of layers cementing oxidant layer 31a is preferably 1g/m²More than, more preferably 3g/m²More than, furthermore it is preferred that being 25g/ m²Hereinafter, more preferably 20g/m²Below.

The grammes per square metre of inner surface side bond layer 66a is preferably 1g/m²More than, more preferably 3g/m²More than, furthermore it is preferred that being 25g/m²Hereinafter, more preferably 20g/m²Below.

The grammes per square metre of outer surface side bond layer 62a is preferably 1g/m²More than, more preferably 3g/m²More than, furthermore it is preferred that being 20g/m²Hereinafter, more preferably 15g/m²Below.

Additionally, for the grammes per square metre of two fins 31,32 never produces the viewpoint of disrumpent feelings intensity of material, preferably 5g/ m²More than, more preferably 8g/m²More than, additionally, from for the viewpoint of pliability, preferably 30g/m²Hereinafter, more preferably 20g/ m²Below.

Furthermore, the application pattern of the bonding agent of each bond layer is formed, spray gun, coating rifle etc. are preferably used as bonding agent Coating machine is coated in planar, but can also use bead spray gun, spiral spray gun, sub- rice eggplant shape spray gun, transfer roll etc. As adhesive applicating machine carry out linearly, the pattern such as helical form, sub- rice eggplant shape, point-like applies.

Elastic component 33 in side flap portion 3 is configured from improving the flexibility in side flap portion 3 and ensure the viewpoint of retractility For, its width (size of Y-direction) or diameter are preferably more than 0.1mm, furthermore it is preferred that being below 2mm, more preferably 1mm Hereinafter, more specifically, preferably more than 0.1mm below 2mm, more preferably more than 0.1mm below 1mm.

Additionally, configuration is preferably more than 4 in the number of the elastic component 33 in side flap portion 3, more preferably more than 6, Furthermore it is preferred that for less than 30, more preferably less than 20, more specifically, the degree of preferably less than more than 4 30, More preferably less than more than 6 20.

The size of each several part in this specification be extend the grade of elastic component 33 elastic component and by side flap portion or Diaper sprawl as design size (with sprawled in the state of the influence that entirely eliminated elastic component for it is plane when size It is identical) in the state of be measured.

Constituent material to diaper 1 is illustrated.Each constituent material can be disposable using being currently used for without restriction The various materials of the absorbent commodities such as diaper, physiological napkin.

For example, as the fin 31,32, the band base material 42 of pull stap 4 that constitute side flap portion 3, such as nonwoven can be used Cloth, fabric, film or their laminates etc..

As positive dough sheet 21a, non-woven fabrics or three-dimensional apertured film of hydrophily and liquid permeability etc. can be used.As structure Into the outer layer composite sheet of non-skin lateral plate 22, leakage prevention sheet 22a can use by liquid impermeability or liquid hardly possible permeability (including Water-repellancy) the part that constitutes of resin film, outer layer non-woven fabrics 22b can be used as the non-woven fabrics (example as obtained by various preparation methods Such as hot-wind nonwoven cloth, spun-bonded non-woven fabrics, spunlace non-woven cloth, needle punched non-woven fabrics) part that constitutes.Outer layer non-woven fabrics 22b also may be used Think the part of multi-ply construction.Non- skin lateral plate 22 can both not have outer layer non-woven fabrics 22b, or only impermeable by liquid The part that the resin film of the property crossed or liquid hardly possible permeability (including water-repellancy) is constituted.

Additionally, as absorber 23, the clad sheet being made up of the thin paper or non-woven fabrics of water penetration can be used to coat and to be absorbed Property core and part for constituting etc., during the absorbent core is constituted or made the aggregate of paper pulp fiber by the aggregate of paper pulp fiber Keep the particle of water absorbent polymer and constitute.As the stereo enclosure formation piece 21b for forming stereo enclosure, can use Film, non-woven fabrics, fabric or their laminates etc..

As elastic component 33, elastic component 25, the leg creases formation elastic component 26 of composition stereo enclosure, can Using comprising natural rubber, polyurethane, polystyrene-polyisoprene copolymer, polystyrene-polybutadiene copolymer, third Thread or wire the elastic component of the polyethylene-alphaolefin copolymers such as olefin(e) acid ethyl ester-ethene etc..Configuration is in a side flap Multiple elastic components 33 in portion are configured with same kind of elastic component with same elongation, from manufacturing cost or manufacturing step For the viewpoint such as simplified preferably.

As with fix the bonding agent of elastic component 33 be representative for will between each component engage bonding agent it is preferred Material, can enumerate amorphous polyolefin, vinyl-vinyl acetate copolymer (EVA, Ethylene-vinyl acetate Copolymer), vinyl-acrylate copolymer (EEA, Ethylene-acrylic acid ester copolymer), benzene Ethylene-butadiene-styrene block copolymer (SBS, Styrene-butadiene-styrene block copolymer), SIS (SIS, Styrene-isoprene-styrene block Copolymer), styrene-ethylene/butylene-styrene block copolymer (SEBS, Styrene-ethylene/butylene- Styrene block copolymer), styrene-ethylene/propylene-styrene block copolymer (SEPS, Styrene- Ethylene/propylene-styrene block copolymer) etc. thermoplastic polymer and their mixture etc..It is viscous Connect the preferred heat molten type of agent.

Then, the disposable diaper to the 2nd~the 5th implementation method of the invention is illustrated.2nd~the 5th implementation method Disposable diaper in, the juncture of the composition in side flap portion and side flap portion and absorbent main body and/or pull stap and the One implementation method is different.On the 2nd~the 5th implementation method, the main pair of aspect different from first embodiment is illustrated, right Identical symbol is marked in Aspect identical and omit the description.Implement to first on without appropriate application in terms of specifically mentioned The explanation that mode is carried out.

The disposable diaper of second embodiment is as shown in figure 5, with two fins 31,32 by side flap portion 3A is constituted In configuration outer surface side outer surface side from fin 31 to the fin 31 turnover bonding two-layer structure part 31A', 31B'(lit-par-lit structures part), the two-layer structure part of upper side engagement portion 66, main body side bond layer 35 and base end part 3b sides The layers cementing oxidant layer 31a of 31A' is overlapped on the thickness direction of diaper.

The disposable diaper of the 3rd implementation method is as shown in fig. 6, with two fins 31,32 by side flap portion 3B is constituted In the two-layer structure part 31A that is formed in another fin 31' of the lamination adhesive of fin 31 of outer surface side of configuration ", 31B " (layer Laminated structure section point), the two-layer structure part 31A of upper side engagement portion 66, main body side bond layer 35 and base end part 3b sides " interlayer Bond layer 31a is overlapped on the thickness direction of diaper.

The disposable diaper of the 4th implementation method is not as shown in fig. 7, two fins 31,32 for constituting side flap portion 3C have There is two-layer structure part.

The side flap portion 3D of the disposable diaper of the 5th implementation method passes through as shown in figure 8, having in the side of absorbent main body 2 Configuration in two fins 31,32 for constituting side flap portion is formed and used by thermal welding in the fin 32 of inner surface side with stereo enclosure The upper side engagement portion 66D of piece 21b (skin lateral plate) engagements, and upper side engagement portion 66D and main body side bond layer 35 are in urine Overlapped on the thickness direction of cloth.In upper side engagement portion 66D, multiple heat-fused portion 66d are formed with scatterplot shape, in each thermal welding In portion 66d, lead to between the fin 31 of the outer surface for forming side flap portion 3 from the fin 32 of the inner surface for forming side flap portion 3D Cross thermal welding integrated in a thickness direction.On the other hand, fin 32 is connect by bonding agent 70 with stereo enclosure formation piece 21b Close, but junction surface by the bonding agent 70 is not overlap with main body side bond layer 35.Side engagement portion 66D in formation Heat-fused portion 66d be preferably in saw-tooth arrangement scatterplot shape be formed with multiple.

According to the disposable diaper of the 2nd~the 3rd and the 5th implementation method, produce and act on effect with first embodiment identical Really.Additionally, according to the disposable diaper of the 4th implementation method, the effect produced except there is two-layer structure part by fin 32 with Outward, the effect roughly the same with first embodiment is produced.

The manufacture method in disposable diaper of the invention and side flap portion is not limited to them, can be by arbitrary method Manufacture.

For the preference of the manufacture method in the side flap portion of disposable diaper of the invention, to manufacture first embodiment Diaper side flap portion 3 situation as a example by illustrate.

For one of the preferred manufacture method in the side flap portion 3 of first embodiment, reference picture 9 is illustrated, Fig. 9 The manufacture device 7 of shown telescopic sheet includes：A pair of elastic components conveyance tectosome long 71,71, elastic component up- coilers Structure 72 and by the integrated mechanism 73 integrated with a pair of banding pieces 31', 32' of elastic component 33.Banding piece 31', 32' are respectively The blank of fin 31,32.A pair of elastic component conveyance tectosomes long 71,71 are separated from each other the interval of regulation and abreast match somebody with somebody Put.Elastic component winding mechanism 72 is by thread elastic component 33 wound on a pair of elastic component conveyance tectosomes long 71,71 Being oriented for the elastic component 33 is above set to be intersected with the length direction (R directions in figure) of tectosome long 71 with elastic component conveyance Direction.Integrated mechanism 73 will use tectosome long using elastic component winding mechanism 72 wound on a pair of elastic component conveyances 71st, a pair of banding pieces are clipped in the elastic component 33 that tectosome long 71,71 is transported on 71 and using a pair of elastic components conveyances Integration is carried out between 31', 32'.As elastic component conveyance tectosome long 71, as shown in figure 9, preferably using with R side The retrograde part that opposite direction to mobile direct motion part and in R directions is moved, and only direct motion part and thread elastic component 33 engage and transport the endless belt of the elastic component 33 in R directions.Endless belt is erected on belt wheel or gear, makes the belt wheel or tooth Wheel rotates and is driven.As each elastic component conveyance tectosome long 71, it is also possible to using only such endless belt, but It is as shown in figure 9, as the conveyance of each elastic component with tectosome long 71, preferably use and for such endless belt to be configured to upper and lower two The part of section.By in upper and lower band, speed difference is set, can initially volume a pair of elastic component conveyance tectosomes long 71, When on 71, the orientation amendment that will overlook jagged thread elastic component 33 is the elastic component 33 is separated in the directionr It is spaced and is orientated the state of multiple parallel shapes, and is fixed between a pair of piece 31', 32' of bandings.As elastic component Conveyance tectosome long 71, it is also possible to be helically provided with the round clava of groove or raised line around central axis using by side face And the part being driven in rotation.

In the preferred manufacture method in side flap portion 3, as shown in figure 9, on banding piece 31', using known bonding Agent coating machine 75 is used to be formed the bonding agent 63' and 64' of interlayer bond layer 31a in zonally continuously coating respectively, then with The mode of above-mentioned two bonding agents 63' and 64' is covered, using the turnover guiding piece of also referred to as folding guide (sailor guide) (not shown) etc. turns down the both sides of banding piece 31' to the surface side relative with banding piece 32'.

Then, using adhesive applicating machine 76 respectively in zonally to banding piece 31' or banding piece 32' continuously coatings bonding Agent 34 so that the bonding agent 34 for forming main body side bond layer 35, front bond layer 36 and middle bond layer 37 Between the part through turning down of banding piece 31'.

Then, two banding piece 31', 32' after applying bonding agent 34 are with the elastic structure of folder person elongation state between the two The mode of part 33 is collaborated, by a pair of the niprolls 74 as integrated mechanism 73 from being pressurizeed to them up and down and integrated. Then, the elastic component 33 that will extend to side by using the shut-off mechanisms such as the cutting machine with cutoff tool 77 cuts off, and Obtain the non-individual body 3' of telescopic sheet.

Then, the non-individual body 3' of the telescopic sheet as arbitrary shut-off mechanism by obtained by is cut to each side flap portion successively Length.In this way can efficiency well continuously produce first embodiment side flap portion 3.

In the manufacture method of disposable diaper of the invention, except being existed using above-mentioned side flap portion 3 or the side flap portion 3 The non-individual body 3' of the continuous telescopic sheet for constituting and formation are Chong Die with main body side bond layer on length direction (Y-direction) Beyond upper side engagement portion, can be according to existing known method manufacture disposable diaper.

For example, manufacturing first embodiment using the non-individual body 3' of the continuous telescopic sheet for constituting in side flap portion 3 The preferred manufacture method of disposable diaper 1 has following step (I)~(VI).

(I) cutting is coated with the non-individual body of the pull stap 4 in the bonding agent for forming connecting adhesive oxidant layer 65, intermittently Step on the non-individual body 3' of telescopic sheet.Cleaved pull stap 4 is fixed on telescopic sheet by above-mentioned bonding agent Non-individual body 3' on.It is preferred that the non-individual body of pull stap 4 is fixed with the non-individual body of adhered portion 41 along its length before cutting.

(II) pull stap 4 is turned down, is temporarily fixed on the non-individual body 3' of the telescopic sheet via adhered portion 41.In the step In rapid, the part turnover that the lateral margin of the non-individual body 3' from telescopic sheet in pull stap 4 is extended is temporary via adhered portion 41 When fix.

(III) the continuous of telescopic sheet will be continuously coated in for forming the bonding agent of outer surface side bond layer 62a Step on body 3'.

(IV) the non-individual body 3' of telescopic sheet is cut, is installed on the non-individual body of skin lateral plate or non-skin lateral plate Step.

The non-individual body of skin lateral plate be by the non-individual body of stereo enclosure formation piece it is integrated with the non-individual body of positive dough sheet and Obtain.The non-individual body of stereo enclosure formation piece is integrated via bond layer 68,69 with the non-individual body of positive dough sheet.At this In step, the non-individual body 3' of telescopic sheet will be cut and the side flap portion 3 with pull stap that obtains is arranged on skin lateral plate 21 Or on the non-individual body of non-skin lateral plate 22.It is via outer surface when the side flap portion 3 is installed to the non-individual body of non-skin lateral plate 22 Side bonds oxidant layer 62a and install, the non-individual body to skin lateral plate is via inner surface side bonding agent when installing the side flap portion 3 Layer 66a and install.

(V) non-individual body and the non-individual body of non-skin lateral plate 22 to skin lateral plate 21 clips the shape of absorber 23 between the two The step of integration is carried out under state.

In above-mentioned (IV) step, the side flap portion 3 with pull stap is being arranged on the non-individual body of non-skin lateral plate 22 In the case of upper, absorber is configured on the one side of the non-individual body of non-skin lateral plate 22, and to cover the opposition side of the absorber The mode in face overlap the non-individual body of skin lateral plate 21.Then, by any means such as bonding agent, heat sealing, ultrasonic sealing functions To be engaged between the non-individual body of non-skin lateral plate 22 and the non-individual body of skin lateral plate 21.On the other hand, in above-mentioned (IV) step, In the case where the side flap portion 3 with pull stap is arranged on the non-individual body of skin lateral plate 21, in the one side of the non-individual body Upper configuration absorber, and to cover the face of opposition side of the absorber in the way of overlap the non-individual body of non-skin lateral plate 22.Then, By any means such as bonding agent, heat sealing, ultrasonic sealing functions by the non-individual body of non-skin lateral plate 22 and the company of skin lateral plate 21 Engaged between continuous body.It is preferred that being intermittently fixed for forming the mechanicalness face for taking region on the non-individual body of non-skin lateral plate 22 Male parts of hasp etc..

(VI) the diaper non-individual body of gained is cut to each disposable diaper.

The disposable diaper of the 5th implementation method can for example be manufactured as follows.That is, by with first embodiment The base end part 3b sides in the side flap portion with pull stap that the above-mentioned manufacture method identical mode of diaper is manufactured and skin lateral plate 21 non-individual body is overlapped, using heat sealing device of multiple convex portions with shape corresponding with heat-fused portion etc. to them in thickness Degree direction is heated and is pressurizeed, and them is engaged in the multiple heat-fused portion being distributed.Then, in the composite sheet of gained One side on configure absorber, and the non-individual body of non-skin lateral plate 22 is overlapped thereon, by bonding agent, heat sealing, ultrasonic wave Any means such as sealing will be engaged between the non-individual body of non-skin lateral plate 22 and the non-individual body of skin lateral plate 21.In non-skin lateral plate Intermittently it is fixed with 22 non-individual body and takes the male parts of mechanicalness surface fastener in region etc. for formation.Then, by gained Diaper non-individual body be cut to each disposable diaper, then obtain the 5th implementation method diaper.

More than, based on preferred embodiment the present invention is described, but the present invention is not limited to above-mentioned each reality Mode is applied, various changes can be carried out.

For example, disposable diaper of the invention can also be the diaper without stereo enclosure, such as side flap portion 3,3A The fin 32 of~3D can be also bonded on by upper side engagement portion 66 in the both sides of absorbent main body 2 and reach absorbent main body 2 Lateral margin positive dough sheet 21a (skin lateral plate) on.

It is further possible to a piece is not folded function as stereo enclosure formation piece 24.Additionally, as stereo enclosure shape Into using piece 21b, additionally it is possible to only make the part of a fixed elastic component 25 for piece that a piece is used for two-layer structure.

Additionally, in the above-described embodiment, leg creases formation elastic component 26 is to be clipped in stereo enclosure formation piece The two-layer structure part of 21b, but it is also possible to instead of this, is fixed between stereo enclosure formation piece 21b and non-skin lateral plate 22. Additionally, the composite sheet for constituting non-skin lateral plate 22 can also be the diaper width direction of leakage prevention sheet 22a and outer layer non-woven fabrics 22b The part of equal length.Additionally, non-skin lateral plate 22 can also be the part being only made up of leakage prevention sheet 22a.

Pull stap 4 can also on the one side with base material being made up of non-woven fabrics etc. adhesive-applying formed by being bonded Agent constitute adhered portion part come replace on the one side with base material being made up of non-woven fabrics etc. pass through thermal welding or bonding agent Deng the part of the male parts for pasting mechanicalness surface fastener.Additionally, making the set being made up of the male parts of mechanicalness surface fastener The region of taking of the set of portion 41 both can be male parts in the outer surface engagement mechanical surface fastener of non-skin lateral plate 22 and shape Into, it is also possible to the outer surface of outer layer composite sheet 22 is made up of the excellent non-woven fabrics of engaging, and its specific region is set to take Region.

Additionally, pull stap 4 can also be to be bonded to the veutro wing installed in the both sides of the absorbent main body 2 of veutro portion A The part of piece (not shown).As the formation material of veutro fin, non-woven fabrics, fabric, film or their laminates can be used Deng.

Additionally, in Fig. 4~Fig. 8, representing and passing through bonding agent by the appearance that fin 31 is bonded in base material 42 of pull stap 4 The example of face (the not face of the side of fin 32) side, but also the inner surface of fin 32 can will be bonded on by bonding agent with base material 42 (the not face of the side of fin 31) side, or the opposite face that fin 31 and/or 32 is bonded on by bonding agent.

Furthermore it is preferred that elastic component 33 is configured approximately along the width of diaper, for example both can be long relative to diaper Degree direction Central Line CL orthogonal straight line parallel ground configuration, it is also possible to configured in the way of the angle into less than 30 °.Additionally, In example shown in Fig. 4, formed by outside (left side in Fig. 4) place of X-direction than front bond layer 36 in side flap portion 3 There is the front non-adhesive region that fin 31,32 is bonded not over bonding agent, and in side flap portion 3 than main body side bonding agent Layer 35 is by Central Line CL sides, being formed with the main body side non-adhesive region that fin 31,32 is bonded not over bonding agent, but also may be used Not form such front non-adhesive region and/or main body side non-adhesive region.

Additionally, the side flap portion 3,3A~3D with pull stap 4 can also only be formed at the length direction of absorbent main body 2 The left and right sides in either side.Additionally, zone line 30 can also be made up of for whole region non-adhesive region 38.

Additionally, instead of set between main body side bond layer 35 and front bond layer 36 in Y-direction it is continuous in Between bond layer 37, it is also possible to be arranged on fin 31,32 each other not the position Chong Die with elastic component 33 carried out thermal welding and Into multiple heat-fused portion.In addition it is also possible to the whole area between main body side bond layer 35 and front bond layer 36 Domain, fin 31,32 is engaged each other by the weaker bonding agent of the bonding force compared with the bonding agent of above-mentioned two adhesive linkage 35,36.

Additionally, in fig. 8, heat-fused portion 66d be in saw-tooth arrangement scatterplot shape be formed with multiple, but it is also possible to be set to Continuous 1 heat-fused portion in the Y direction.

Additionally, in each implementation method shown in Fig. 4, Fig. 5, Fig. 6 and Fig. 8, by lit-par-lit structure part or two-layer structure portion Divide and be formed in fin 31, but can also replace it, in the forming layer laminated structure section of fin 32 point or two-layer structure part.Additionally, also may be used With forming layer laminated structure section point or two-layer structure part on both fin 31 and fin 32.In such a situation it is preferred that main body side Bond layer 35 and front bond layer 36 are configured in the lit-par-lit structure part (or two-layer structure part) of fin 31 and fin Between 32 lit-par-lit structure part (or two-layer structure part).

Additionally, the key element that partly and only an implementation method has of omitting the description in an above-mentioned implementation method can be respectively Be suitably applied to other embodiment, additionally, key element in each implementation method can suitably between implementation method phase double replacement.

On above-mentioned implementation method, the manufacture method of the present invention and then the following disposable diaper of announcement and disposable diaper.

A kind of disposable diapers of the ＞ of ＜ 1, it includes：Absorbent main body, above-mentioned absorbent main body includes that absorber, configuration exist The non-skin lateral plate of the skin lateral plate of the inner surface side of the absorber and configuration in the outer surface side of the absorber；With installed in this The side flap portion of the retractility on the sidepiece of the one or both sides of absorbent main body,

The side flap portion, is provided with pull stap, and be fixed on including two fins and with the state for extending in leading section Elastic component between two fins, and including will the end of the absorbent main body side of the elastic component or it is fixed nearby Main body side bond layer and will the end of the leading section side in the side flap portion of the elastic component or its it is nearby fixed before Side bond layer,

The side flap portion have by the configuration in described two fins inner surface side fin and the skin lateral plate The upper side engagement portion of engagement, and side engagement portion is Chong Die on the thickness direction of diaper with the main body side bond layer on this.

The disposable diaper of for example above-mentioned ＞ of ＜ 1 of the ＞ of ＜ 2, wherein on above-mentioned in side engagement portion, constituting above-mentioned side flap portion Above-mentioned two fin in configuration engaged by bonding agent with above-mentioned skin lateral plate in the fin of inner surface side.

The disposable diaper of the ＞ of the ＜ 3 for example above-mentioned ＞ of the ＜ 1 or ＞ of ＜ 2, wherein on above-mentioned in side engagement portion, constituting above-mentioned side The fin for being configured at inner surface side in the above-mentioned two fin of tab portion is engaged with above-mentioned skin lateral plate by thermal welding.

The disposable diaper of any one of for example above-mentioned ＞ of 1 ＞ to ＜ of ＜ 3 of the ＞ of ＜ 4, wherein above-mentioned side flap portion is in above-mentioned suction The property received main body side have by the configuration in the above-mentioned two fin for constituting above-mentioned side flap portion outer surface side fin with it is above-mentioned The thickness direction of the lower side engagement portion of non-skin lateral plate engagement, above-mentioned lower side engagement portion and aforementioned body side bonds oxidant layer in diaper Upper overlap.

The disposable diaper of for example above-mentioned ＞ of ＜ 4 of the ＞ of ＜ 5, wherein in above-mentioned side flap portion, above-mentioned upper side engagement portion, above-mentioned master Side bond layer and above-mentioned lower side engagement portion are overlapped on the thickness direction of diaper.

The disposable diaper of any one of for example above-mentioned ＞ of 1 ＞ to ＜ of ＜ 5 of the ＞ of ＜ 6, wherein constituting the upper of above-mentioned side flap portion Fin of the configuration in two fins in outer surface side is stated, is had in above-mentioned absorbent main body side and is glued by the turnover of the fin Connect or other pieces lamination adhesive and the lit-par-lit structure part with layers cementing oxidant layer that is formed, and

The layers cementing oxidant layer of above-mentioned upper side engagement portion, aforementioned body side bonds oxidant layer and above-mentioned lit-par-lit structure part is in urine Overlapped on the thickness direction of cloth.

The disposable diaper of for example above-mentioned ＞ of ＜ 6 of the ＞ of ＜ 7, wherein forming the fin of above-mentioned lit-par-lit structure part in side flap portion Inner surface side from base end part to the fin turn down, this through turn down part via layers cementing oxidant layer with the fin without The partially overlapping engagement of turnover.

The disposable diaper of the ＞ of the ＜ 8 for example above-mentioned ＞ of the ＜ 6 or ＞ of ＜ 7, wherein in constituting two fins in above-mentioned side flap portion Configuration outer surface side fin have to the fin outer surface side turnover bonding two-layer structure part (stacking structure Make part).

The disposable diaper of any one of for example above-mentioned ＞ of 1 ＞ to ＜ of ＜ 8 of the ＞ of ＜ 9, wherein above-mentioned side flap portion is in its front end Portion has two-layer structure part (the lit-par-lit structure portion with layers cementing oxidant layer formed by the turnover bonding of above-mentioned fin Point), the leading section being reinforced by the two-layer structure part is engaged by connecting adhesive oxidant layer with pull stap.

The disposable diaper of any one of for example above-mentioned ＞ of 1 ＞ to ＜ of ＜ 9 of the ＞ of ＜ 10, wherein above-mentioned skin lateral plate includes liquid The positive dough sheet of permeability and then a pair of stereo enclosure formation pieces of its both sides are bonded on, and

On above-mentioned in side engagement portion, by the configuration in the above-mentioned two fin for constituting above-mentioned side flap portion in inner surface side Fin and above-mentioned stereo enclosure formation chip bonding.

The disposable diaper of for example above-mentioned ＞ of ＜ 10 of the ＞ of ＜ 11, wherein above-mentioned stereo enclosure formation piece has turning over a piece The two-layer structure part rolled over and be laminated and its interlayer is engaged by thermal welding, and

On above-mentioned in side engagement portion, the configuration in the above-mentioned two fin in above-mentioned side flap portion is constituted in inner surface side Fin is engaged with the above-mentioned two-layer structure part of above-mentioned stereo enclosure formation piece.

The disposable diaper of the ＞ of the ＜ 12 for example above-mentioned ＞ of the ＜ 10 or ＞ of ＜ 11, wherein above-mentioned stereo enclosure formation piece is above-mentioned Ora terminalis on the inside of the width of absorbent main body nearby has the elastic component of stereo enclosure formation along the ora terminalis, in dress When, by the convergent force of the elastic component, the part of the Rack of crotch is left from positive dough sheet and forms stereo enclosure.

The disposable diaper of any one of for example above-mentioned ＞ of 1 ＞ to ＜ of ＜ 12 of the ＞ of ＜ 13, wherein aforementioned body side bonds oxidant layer The not ora terminalis of the above-mentioned absorbent main body side in the above-mentioned side flap portion of arrival, and above-mentioned side flap portion has upper in its base end part Turn into the main body side non-adhesive region of disengaged condition between stating two fins.

The disposable diaper of any one of for example above-mentioned ＞ of 1 ＞ to ＜ of ＜ 13 of the ＞ of ＜ 14, wherein above-mentioned front bond layer Ora terminalis without the above-mentioned pull stap side for reaching above-mentioned side flap portion, above-mentioned side flap portion has the above-mentioned two wing in its leading section Front non-adhesive region as disengaged condition between piece.

The disposable diaper of any one of for example above-mentioned ＞ of 1 ＞ to ＜ of ＜ 14 of the ＞ of ＜ 15, wherein prolonging in above-mentioned side flap portion Stretch the region between the main body side bond layer on direction and front bond layer i.e. zone line and be provided with the middle of multiple and glue Connect oxidant layer.

The disposable diaper of for example above-mentioned ＞ of ＜ 15 of the ＞ of ＜ 16, wherein aforementioned body side bonds oxidant layer and above-mentioned front end side bonds Oxidant layer is formed must be than above-mentioned middle bonding agent slice width.

The disposable diaper of the ＞ of the ＜ 17 for example above-mentioned ＞ of the ＜ 15 or ＞ of ＜ 16, wherein aforementioned body side bonds oxidant layer, it is above-mentioned before The multiple elasticity that side bond layer and above-mentioned middle bond layer extend with the width (X-direction) in disposable diaper Component 33 intersects and extends in diaper length direction (Y-direction).

The disposable diaper of any one of for example above-mentioned ＞ of 1 ＞ to ＜ of ＜ 17 of the ＞ of ＜ 18, wherein aforementioned body side bonds oxidant layer, The institute that above-mentioned front bond layer and above-mentioned middle bond layer extend with the width (X-direction) in disposable diaper Elastic member intersects and extends in diaper length direction (Y-direction), and throughout the upper and lower intermarginal total length in above-mentioned side flap portion.

The disposable diaper of any one of for example above-mentioned ＞ of 1 ＞ to ＜ of ＜ 18 of the ＞ of ＜ 19, wherein above-mentioned upper side engagement portion with it is upper State width (X position, in disposable diaper that main body side bond layer is overlapped on the thickness direction of disposable diaper Direction) on length L1 be more than 1mm or more than 3mm, and be below 20mm or below 17mm.

The disposable diaper of any one of for example above-mentioned ＞ of 1 ＞ to ＜ of ＜ 19 of the ＞ of ＜ 20, wherein aforementioned body side bonds oxidant layer Disposable diaper width (X-direction) on width L2 be more than 1mm or more than 3mm, and be below 20mm or 17mm Below.

The disposable diaper of any one of for example above-mentioned ＞ of 1 ＞ to ＜ of ＜ 20 of the ＞ of ＜ 21, wherein above-mentioned upper side engagement portion with it is upper State the disposable diapers of the above-mentioned length L1 relative to aforementioned body side bonds oxidant layer at the position of main body side bond layer overlap The ratio (L1/L2) of the width L2 on width (X-direction) is more than 0.05 or more than 0.15, and is less than 1 or less than 0.85, Additionally, being less than more than 0.05 1 or less than more than 0.15 0.85.

The disposable diaper of any one of for example above-mentioned ＞ of 1 ＞ to ＜ of ＜ 21 of the ＞ of ＜ 22, wherein the one of above-mentioned upper side engagement portion Width L3 on the width (X-direction) of secondary property diaper is more than 1mm or more than 3mm, preferably below 20mm or 17mm with Under.

The disposable diaper of any one of for example above-mentioned ＞ of 1 ＞ to ＜ of ＜ 22 of the ＞ of ＜ 23, wherein above-mentioned upper side engagement portion with it is upper State the width of the disposable diapers of the above-mentioned length L1 relative to above-mentioned upper side engagement portion at the position of main body side bond layer overlap The ratio (L1/L3) of the width L3 on direction (X-direction) is more than 0.05 or more than 0.15, and is less than 1 or less than 0.85, this Outward, it is less than more than 0.05 1 or less than more than 0.15 0.85.

The disposable diaper of any one of for example above-mentioned ＞ of 4 ＞ to ＜ of ＜ 23 of the ＞ of ＜ 24, wherein above-mentioned lower side engagement portion with it is upper State width (X position, in disposable diaper that main body side bond layer is overlapped on the thickness direction of disposable diaper Direction) on length L4 be more than 1mm or more than 3mm, and be below 20mm or below 17mm.

The disposable diaper of any one of for example above-mentioned ＞ of 4 ＞ to ＜ of ＜ 24 of the ＞ of ＜ 25, wherein the one of above-mentioned lower side engagement portion Width L5 on the width (X-direction) of secondary property diaper is more than 1mm or more than 3mm, and is below 50mm or below 45mm.

The disposable diaper of any one of for example above-mentioned ＞ of 4 ＞ to ＜ of ＜ 25 of the ＞ of ＜ 26, wherein above-mentioned lower side engagement portion with it is upper State the width of the disposable diapers of the above-mentioned length L4 relative to above-mentioned lower side engagement portion at the position of main body side bond layer overlap The ratio (L4/L5) of the width L5 on direction (X-direction) is more than 0.02 or more than 0.06, and is less than 1 or less than 0.5, additionally, It is less than more than 0.02 1 or less than more than 0.06 0.5.

The disposable diaper of any one of for example above-mentioned ＞ of 4 ＞ to ＜ of ＜ 26 of the ＞ of ＜ 27, wherein above-mentioned upper side engagement portion, above-mentioned All overlaps on the thickness direction of disposable diaper of main body side bond layer and above-mentioned lower side engagement portion.

The disposable diaper of any one of for example above-mentioned ＞ of 4 ＞ to ＜ of ＜ 27 of the ＞ of ＜ 28, wherein above-mentioned upper side engagement portion and upper State downside junction surface and distinguish that part or all is Chong Die on the thickness direction of disposable diaper with aforementioned body side bonds oxidant layer, And above-mentioned side flap portion disposable diaper length direction (Y-direction) total length more than 90% length on extend, or Extend in the total length of the Y-direction in above-mentioned side flap portion.

The disposable diaper of any one of for example above-mentioned ＞ of 6 ＞ to ＜ of ＜ 28 of the ＞ of ＜ 29, wherein above-mentioned upper side engagement portion, above-mentioned The layers cementing oxidant layer of the two-layer structure part of the base end part side in main body side bond layer and above-mentioned side flap portion is in disposable urine It is overlapped on the thickness direction of cloth, and above-mentioned side flap portion disposable diaper length direction (Y-direction) total length Extend in more than 90% length, or extend in the total length of Y-direction in above-mentioned side flap portion.

The disposable diaper of any one of for example above-mentioned ＞ of 6 ＞ to ＜ of ＜ 29 of the ＞ of ＜ 30, wherein above-mentioned front bond layer With the layers cementing oxidant layer of the two-layer structure part of the leading section side in above-mentioned side flap portion on the thickness direction of disposable diaper It is overlapped, and above-mentioned side flap portion disposable diaper length direction (Y-direction) total length more than 90% length Extend in upper extension, or the total length of Y-direction in above-mentioned side flap portion.

The disposable diaper of any one of for example above-mentioned ＞ of 1 ＞ to ＜ of ＜ 30 of the ＞ of ＜ 31, wherein above-mentioned absorbent main body includes When wearing positioned at wearer veutro veutro portion, positioned at wearer dorsal part drosal part and the crotch positioned at crotch part, Side flap portion in the way of protruding installed in the absorbent main body of drosal part laterally from the both sides edge of absorbent main body respectively Both sides.

The disposable diaper of any one of for example above-mentioned ＞ of 1 ＞ to ＜ of ＜ 31 of the ＞ of ＜ 32, wherein above-mentioned non-skin lateral plate is by multiple Close piece constitute, the composite sheet include liquid impermeability or liquid hardly possible permeability (including water-repellancy) leakage prevention sheet and via outer layer Bond layer is bonded on the outer layer non-woven fabrics of the outer surface side of the leakage prevention sheet.

The disposable diaper of any one of for example above-mentioned ＞ of 1 ＞ to ＜ of ＜ 31 of the ＞ of ＜ 33, wherein configuring in above-mentioned side flap portion Elastic component be multiple, be more than 4 or more than 6, and be less than 30 or less than 20, additionally, for more than 4 30 Below or less than more than 6 20.

The disposable diaper of any one of for example above-mentioned ＞ of 1 ＞ to ＜ of ＜ 33 of the ＞ of ＜ 34, wherein as the above-mentioned side flap of composition The fin in portion, uses non-woven fabrics, fabric, film or their laminates.

Embodiment

Hereinafter, by embodiment, the present invention will be described in more detail, but the present invention is not recorded by following examples Any limitation.

(embodiment 1)

The disposable diaper of embodiment 1 of the manufacture with composition identical with the disposable diaper of first embodiment.

As the fin 31,32 for constituting side flap portion 3, grammes per square metre 13g/m is used²Non-woven fabrics, formed as stereo enclosure Piece 21b is used, using by the grammes per square metre 10g/m with spun-bonded non-woven fabrics Yu the lit-par-lit structure of melt spraying non-woven fabrics²Stacking non-woven fabrics folding Part that is folded and forming two-layer structure part.Additionally, as non-skin lateral plate 22, using in grammes per square metre 18g/m²Resin film it is outer Surface engages grammes per square metre 13g/m²The composite members of outer layer non-woven fabrics (total grammes per square metre is 31g/m²).As bonding agent, in the wing Using the admixture of SIS and SBS in the bonding of piece 31 and fin 32, the heat molten type of SBS is used in addition.

Additionally, the upper side engagement portion 66 in side flap portion 3 is set to the above-mentioned overlap length L1 of main body side bond layer 35 4mm, the width L2 of the X-direction of main body side bond layer 35 is set to 12mm, upper side engagement portion 66 (inner surface side bond layer 66a) The width L3 of X-direction be set to 10mm, lower side engagement portion 62 is set to the above-mentioned overlap length L4 of main body side bond layer 35 The width L5 of the X-direction of 4mm, lower side engagement portion 62 or outer surface side bond layer 62a is set to 30mm.

What upper side engagement portion 66, main body side bond layer 35 and lower side engagement portion 62 were overlapped on the thickness direction of diaper 1 The length of the X-direction at position is set to identical with above-mentioned length L1 and above-mentioned length L4, is 4mm.By the two-layer structure part of piece 31 The width of the X-direction of the layers cementing oxidant layer 31a that the interlayer of 31A, 31B is fixed is set to 28mm.

(embodiment 2~3)

In embodiment 1, the grammes per square metre and the bonding in each portion of the non-woven fabrics of the fin 31,32 for constituting side flap portion 3 be will act as The grammes per square metre of the bonding agent of oxidant layer is changed as shown in table 1, and manufacture in addition has what identical was constituted with embodiment 1 Disposable diaper.

(comparative example 1)

In embodiment 1, the upper side engagement portion 66 and main body side in side flap portion 3 are separately formed on diaper width direction Bond layer 35, and the interval of 7mm is set between the two.Additionally, by the grammes per square metre of outer surface side bond layer and main body side bonds The width of oxidant layer is changed as shown in table 1.Manufacture in addition has the disposable urine of identical composition with embodiment 1 Cloth.

[table 1]

Note：" ← ", represents identical with left column.

(evaluation)

The measure of rupture strength

By each disposable diaper of gained, along the length direction extension in main body 2 and the distance of the lateral margin away from main body 2 L14 is cut off for the straight line 7 (reference picture 10 (a)) of 50mm, obtains test sample S.By the figure of the test sample S of gained After 2 positions shown in 10 (b) are clipped in chuck C1, C2 of cupping machine with the direction shown in Figure 10 (b), expand chuck C1 with The distance between chuck C2 (distance between chuck), carries out stretching experiment.

The outline of the cupping machine 8 used in the measure for representing rupture strength in fig. 11.

Cupping machine 8 rotates ball screw 82 by using servomotor 81, and can make to be provided with chuck C1 Movable table 83 enter line slip in the way of expanding the distance between chuck C1 and chuck C2 and reduce and move, furthermore it is possible to sharp The tension load being applied in the expansion of distance between chuck on chuck C2 is detected with load cell 85, and the change is recorded In data logger 86.

Control unit 87 is electrically connected with servomotor 81, load cell 85 and data logger 86, controls chuck spacing From expansion beginning, expand speed, stopping, the beginning of the measurement of tension load and the stopping etc. that expand.Cupping machine 8 makes Use following device：Maximum load is that the setting range of the expansion of distance or translational speed between 200N, chuck is 10~200m/ Min, range (stroke, stroke) is that the desirable scope of distance between 600mm, chuck is 0~200mm.

After test sample S is arranged on into the cupping machine 8, such as shown in Figure 10 (b), slides transfer and chuck C1 is installed Movable table 83, make expanding with the speed of 200m/min from the initial length of 10mm apart from L10 between chuck C1, C2, measurement is produced Maximum load before life is disrumpent feelings.The maximum load is set to rupture strength.

For each diaper of embodiment and comparative example, such stretching is carried out repeatedly using the diaper of identical composition real Test, the average value and standard deviation (σ) of their result are shown in Table 1.

Furthermore, the position clipped by chuck C1, C2 of test sample S is shown in Figure 10 (a) in disposable diaper Position.The size in each portion shown in Figure 10 (a) is as described below.

The lower end in side flap portion 3 to the position clipped by chuck C1 of absorbent main body 2 apart from L6：70mm

Chuck holds width L7：35mm

Jaw member width L8：70mm

The front-end edge in side flap portion 3 is with the front end at the position clipped by chuck C2 apart from L9：10mm

The lateral margin of absorbent main body 2 is with the front end at the position clipped by chuck C2 apart from L11 (in the receipts in side flap portion 3 It is measured under contracting state)：32.5mm

The length L12 of jaw member (chuck C1)：50mm

The length L13 of jaw member (chuck C2)：60mm

Result according to table 1 it will be apparent that：The disposable diaper of embodiment is disrumpent feelings strong compared with the diaper of comparative example Degree is greatly improved, and is not likely to produce in the installation portion that the absorbent main body relative to side flap portion or side flap portion is installed and is torn Split.

Industrial utilizability

Disposable diaper of the invention is not likely to produce fracture near the root of the lower edge in side flap portion.

Claims

1. a kind of disposable diaper, it includes：Absorbent main body, the absorbent main body includes absorber, configuration in the absorber Inner surface side skin lateral plate and configuration the absorber outer surface side non-skin lateral plate；With installed in absorbability master The side flap portion of the retractility on the sidepiece of the one or both sides of body, the disposable diaper is characterised by：

The side flap portion, pull stap is provided with leading section, and including two fins and with the state for extending be fixed on this two Elastic component between individual fin, and the master including will be fixed near the end of the absorbent main body side of the elastic component or its Side bond layer and the front that will be fixed near the end of the leading section side in the side flap portion of the elastic component or its Bond layer,

There is the fin by the configuration in described two fins in inner surface side to be engaged with the skin lateral plate in the side flap portion Upper side engagement portion, and side engagement portion is Chong Die on the thickness direction of diaper with the main body side bond layer on this,

Fin of the configuration in described two fins in the side flap portion in outer surface side is constituted, in the absorbent main body side The lit-par-lit structure part with layers cementing oxidant layer formed with the turnover bonding by the fin,

Form base end part of the fin of the lit-par-lit structure part in side flap portion to turn down, the part through turning down is viscous via interlayer Connect oxidant layer and with the partially overlapping engagement without turnover of the fin,

The layers cementing oxidant layer of the upper side engagement portion, the main body side bond layer and the lit-par-lit structure part is in diaper Overlapped on thickness direction.

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

The fin for forming the lit-par-lit structure part is that the base end part in side flap portion is turned down to the inner surface side of the fin, the warp The part of turnover is via layers cementing oxidant layer with the fin without the partially overlapping engagement for turning down.

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

On described in side engagement portion, fin of the configuration in described two fins in the side flap portion in inner surface side is constituted Engaged by bonding agent with the skin lateral plate.

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

On described in side engagement portion, the fin for being configured at inner surface side in described two fins in the side flap portion is constituted Engaged by thermal welding with the skin lateral plate.

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

The side flap portion has matching somebody with somebody in the described two fins for constituting the side flap portion in the absorbent main body side The lower side engagement portion that the fin put in outer surface side is engaged with the non-skin lateral plate, the lower side engagement portion and the main body side Bond layer is overlapped on the thickness direction of diaper.

6. disposable diaper as claimed in claim 5, it is characterised in that：

In the side flap portion, the upper side engagement portion, the main body side bond layer and the lower side engagement portion are in diaper Overlapped on thickness direction.

7. disposable diaper as claimed in claim 1, it is characterised in that：

The fin for forming the lit-par-lit structure part is that the base end part in side flap portion is turned down to the outer surface side of the fin, The part through turning down engages via the layers cementing oxidant layer with the part without turnover of the fin.

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

The side flap portion is in the formation with the turnover bonding by the fin of its leading section with layers cementing oxidant layer Lit-par-lit structure part, the leading section being reinforced by the lit-par-lit structure part is connect by connecting adhesive oxidant layer and pull stap Close.

9. disposable diaper as claimed in claim 1, it is characterised in that：

Positive dough sheet of the skin lateral plate including liquid permeability and a pair of stereo enclosure formation pieces for being bonded on its both sides,

On described in side engagement portion, fin of the configuration in described two fins in the side flap portion in inner surface side is constituted With the stereo enclosure formation chip bonding.

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

The stereo enclosure formation has the two-layer for turning down and be laminated and its interlayer is engaged by thermal welding a piece with piece Construction part,

On described in side engagement portion, fin of the configuration in described two fins in the side flap portion in inner surface side is constituted Engaged with the two-layer structure part of the stereo enclosure formation piece.

11. disposable diaper as described in claim 9 or 10, it is characterised in that：

The stereo enclosure formation piece has near the ora terminalis on the inside of the width of the absorbent main body along the ora terminalis The elastic component of stereo enclosure formation, when wearing, by the convergent force of the elastic component, the part of the Rack of crotch Left from positive dough sheet and form stereo enclosure.

12. disposable diapers as described in claim 1 or 2, it is characterised in that：

The main body side bond layer does not reach the ora terminalis of the absorbent main body side in the side flap portion, the side flap Portion is turning into the main body side non-adhesive region of disengaged condition between its base end part has described two fins.

13. disposable diapers as described in claim 1 or 2, it is characterised in that：

The front bond layer does not reach the ora terminalis of the pull stap side in the side flap portion, and the side flap portion exists Its leading section turns into the front non-adhesive region of disengaged condition between having described two fins.

14. disposable diapers as described in claim 1 or 2, it is characterised in that：

The region between main body side bond layer and front bond layer on as the bearing of trend in the side flap portion Zone line be provided with bond layer in the middle of multiple.

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

The main body side bond layer and the front bond layer are formed must be than the middle bonding agent slice width.

16. disposable diapers as claimed in claim 14, it is characterised in that：

The main body side bond layer, the front bond layer and the middle bond layer with disposable diaper The multiple described elastic component that width extends intersects and the length direction in disposable diaper extends.

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

The main body side bond layer, the front bond layer and the middle bond layer with disposable diaper All elastic bar-crossing that width extends and the length direction in disposable diaper extends, and throughout the side flap portion Upper and lower intermarginal total length.

18. disposable diapers as described in claim 1 or 2, it is characterised in that：

The upper side engagement portion and the main body side bond layer on the thickness direction of disposable diaper it is Chong Die it is position, Length on the width of disposable diaper is L1, and L1 is more than 1mm below 20mm.

19. disposable diapers as described in claim 1 or 2, it is characterised in that：

Width on the width of the disposable diaper of the main body side bond layer is L2, and L2 is more than 1mm below 20mm.

20. disposable diapers as described in claim 1 or 2, it is characterised in that：

The length L1 at the upper side engagement portion position Chong Die with the main body side bond layer is relative to the main body side The ratio L1/L2 of the width L2 on the width of the disposable diaper of bond layer is less than more than 0.05 1.

21. disposable diapers as described in claim 1 or 2, it is characterised in that：

Width on the width of the disposable diaper of the upper side engagement portion is L3, and L3 is more than 1mm below 20mm.

22. disposable diapers as described in claim 1 or 2, it is characterised in that：

The length L1 at the upper side engagement portion position Chong Die with the main body side bond layer is relative to the upper side joint The ratio L1/L3 of the width L3 on the width of the disposable diaper in conjunction portion is less than more than 0.05 1.

23. disposable diapers as claimed in claim 5, it is characterised in that：

The lower side engagement portion and the main body side bond layer on the thickness direction of disposable diaper it is Chong Die it is position, Length on the width of disposable diaper is L4, and L4 is more than 1mm below 20mm.

24. disposable diapers as claimed in claim 5, it is characterised in that：

Width L5 on the width of the disposable diaper of the lower side engagement portion is more than 1mm below 50mm.

25. disposable diapers as claimed in claim 5, it is characterised in that：

The length L4 at the lower side engagement portion position Chong Die with the main body side bond layer is relative to the lower side joint The ratio L4/L5 of the width L5 on the width of the disposable diaper in conjunction portion is less than more than 0.02 1.

26. disposable diapers as claimed in claim 5, it is characterised in that：

The upper side engagement portion, the main body side bond layer and the lower side engagement portion all in the thickness of disposable diaper Overlapped on direction.

27. disposable diapers as claimed in claim 5, it is characterised in that：

Part or all is distinguished with the main body side bond layer once in the upper side engagement portion and the downside junction surface Property diaper thickness direction on overlap, and the side flap portion disposable diaper length direction total length more than 90% Length on extend, or in the total length of the length direction of the disposable diaper in the side flap portion extend.

28. disposable diapers as described in claim 1 or 2, it is characterised in that：

The lit-par-lit structure part of the base end part side of the upper side engagement portion, the main body side bond layer and the side flap portion Layers cementing oxidant layer is overlapped on the thickness direction of disposable diaper, and the disposable diaper in the side flap portion length Spend the total length in direction more than 90% length on extend, or the disposable diaper in the side flap portion length direction Extend in total length.

29. disposable diapers as described in claim 1 or 2, it is characterised in that：

The side flap portion is in the formation with the turnover bonding by the fin of its leading section with layers cementing oxidant layer Two-layer structure part,

The front bond layer exists with the layers cementing oxidant layer of the two-layer structure part of the leading section side in the side flap portion It is overlapped on the thickness direction of disposable diaper, and the total length on the length direction of disposable diaper in the side flap portion More than 90% length on extend, or in the total length of the length direction of the disposable diaper in the side flap portion extend.

30. disposable diapers as described in claim 1 or 2, it is characterised in that：

The absorbent main body include when wearing positioned at wearer veutro veutro portion, positioned at wearer dorsal part drosal part With the crotch positioned at crotch part, side flap portion is arranged in the way of being protruded laterally from the both sides edge of absorbent main body respectively The both sides of the absorbent main body of drosal part.

31. disposable diapers as described in claim 1 or 2, it is characterised in that：

The non-skin lateral plate is made up of composite sheet, and the composite sheet includes the leakage prevention sheet of liquid impermeability or liquid hardly possible permeability With the outer layer non-woven fabrics of the outer surface side that the leakage prevention sheet is bonded on via outer layer bond layer.

32. disposable diapers as described in claim 1 or 2, it is characterised in that：

As the fin for constituting the side flap portion, non-woven fabrics, fabric, film or their laminates are used.