CN104837455A

CN104837455A - Disposable diaper

Info

Publication number: CN104837455A
Application number: CN201380063569.6A
Authority: CN
Inventors: 植田章之; 福田优子
Original assignee: Kao Corp
Current assignee: Kao Corp
Priority date: 2012-12-25
Filing date: 2013-09-25
Publication date: 2015-08-12
Anticipated expiration: 2033-09-25
Also published as: TW201427651A; WO2014103452A1; TWI598081B; JP2014124197A; RU2647603C2; RU2015130910A; JP6112707B2; CN104837455B

Abstract

This diaper (1A) is provided with an absorbent main unit (2) having an absorber (23), and elastic side panels (3) attached to both side portions (2S) of the absorbent main unit (2). The absorbent main unit (2) has side sheets (24) disposed on both side portions (2S) thereof. The side panels (3) are formed so as to fix elastic members (33), which are in a state of being elongated in the X-direction, between two side panel sheets (31 and 32) by way of a main unit-side adhesive layer (35) and an outer-side adhesive layer (36). On the side panels (3), in a natural state, by way of contractive force of the elastic members (33), between the main unit-side adhesive layer (35) and the outer-side adhesive layer (36), a gathering area (GT) is formed, comprising hollow gathers in which the respective elastic member (33) is not fixed by the side panel sheets (31 and 32). In this diaper (1A), outer-side edge portions (2S1) along the Y-direction of the absorbent main unit (2) are upon the gathering areas (GT) of the side panels (3).

Description

Disposable diaper

Technical field

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

Background technology

The applicant first from the viewpoint of the use amount of material suppressing flank section to use and the garbage that produces from this material in environment, cost excellence, propose there is the flat type disposable diaper (reference patent documentation 1) being provided with retractility flank section flexible on the width of this absorbent main body in the both sides of the drosal part side of the absorbent main body comprising absorber.

Especially, in the disposable diaper described in patent documentation 1, the magic tape being arranged on the width outside front ends portion of flank section is fixed on flank section with the state being overlapped in flank section by band fixed part, and flank section has in the below adjacent regions of band fixed part the multiple pleats produced by the contraction of pars contractilis.Therefore, become that magic tape not easily produces elongation, breaks, the disposable diaper of stripping etc.

Prior art document

Patent documentation

Patent documentation 1:WO2012073901 (A1)

Summary of the invention

Invent problem to be solved

Generally speaking, when wearing this kind of disposable diaper, owing to making the flank section of retractility extend, so the pressure of wearing being provided with the sidepiece of the absorbent main body of the flank section of retractility uprises relatively.In addition, in the flank section of retractility, also following unfavorable condition is produced: elastomeric element is fixed on the flank section between two sheets with elongation state, in order to firmly fix flexible elastomeric element, the coating quantitative change of the bonding agent in the end winding support region of this elastomeric element is many, thus more hardening or be clamminess than periphery.Therefore, due to the relation of the configuration of the flank section of the configuration and retractility that are configured in the lateral plate of the sidepiece of absorbent main body, sometimes the vestige in the main body side bond layer region of the elastomeric element of flank section be imprinted on wearer skin on or the sheet of flank section be attached on the skin of wearer.

In patent documentation 1, about the unfavorable condition as above in the main body side bond layer region of the elastomeric element in order to prevent flank section, and the content be configured the position of lateral plate of sidepiece and the position of the flank section of retractility that are configured in absorbent main body is without any record.So, in the disposable diaper described in patent documentation 1, with regard to the viewpoint that dressing improves, there is the leeway of improvement further.

For the technical scheme of dealing with problems

The present invention is a kind of disposable diaper, and it comprises: the absorbent main body of lengthwise, it absorber comprising the positive dough sheet being configured in skin opposite face side, the back sheet being configured in non-skin opposite face side and be configured between this positive dough sheet and this back sheet, with the flank section of retractility, it is arranged on the both sides along principal length direction of this absorbent main body, and the non-skin opposite face that the set portion of the magic tape that the leading section outside the body width direction of this flank section arranges by described disposable diaper is bonded on described absorbent main body is worn, wherein, described absorbent main body comprises the lateral plate of the both sides along principal length direction being configured in this absorbent main body, and described flank section comprises: two flank section sheets, the multiple elastomeric elements extended in body width direction, it is fixed between these two flank section sheets, the main body side bond layer extended in principal length direction, the end side of the described absorbent main body side of the plurality of elastomeric element is fixed by it, with the front bond layer extended in principal length direction, the end side of the side, leading section of the described flank section of this elastomeric element is fixed by it, described flank section is fixed between described two flank section sheets by described main body side bond layer and described front bond layer by the described elastomeric element of elongation state to be formed, in described flank section, in its natural state, by the contractility of described multiple elastomeric element, between described main body side bond layer and described front bond layer, the plication region that the hollow pleat that formation is not fixed on described flank section sheet by this elastomeric element is formed, described flank section comprises multiple middle fixed part, the plurality of middle fixed part is configured between described main body side bond layer and described front bond layer, fixing described two flank section sheets, and extend in principal length direction, described pleat is formed at described middle fixed part adjacent on body width direction each other, and extend on the direction intersected with described multiple elastomeric element, the outside side edge part along principal length direction of described absorbent main body is positioned at when overlooking in the described plication region of described flank section.

The effect of invention

According to the present invention, the curling of a kind of main body by absorbent main body and the lap of flank section is provided or overlappingly improves skin sense of touch caused by step (jump) and the disposable diaper that improves of dressing.

Accompanying drawing explanation

Fig. 1 is the expansion top view observing the state that the disposable diaper as the 1st embodiment of the present invention is extended from positive dough sheet side.

Fig. 2 is the flank section of state and the amplification plan view near it that represent that the right side of the disposable diaper shown in Fig. 1 is extended.

Fig. 3 is the body width directional profile figure under the state that the flank section had as the disposable diaper of the 1st embodiment shown in Fig. 2 is shunk.

Body width directional profile figure under the state that Fig. 4 (a) is the flank section elongation shown in Fig. 3, the body width directional profile figure under the state that Fig. 4 (b) is the flank section contraction shown in Fig. 3.

Fig. 5 is the axonometric chart of an example of the manufacture method of the flank section of the disposable diaper representing the 1st embodiment.

Fig. 6 is the flank section of elongation state and the amplification plan view (being equivalent to the figure of Fig. 2) near it that represent that the disposable diaper as the 2nd embodiment of the present invention has.

Fig. 7 is the body width directional profile figure (being equivalent to the figure of Fig. 3) under the state that the flank section had as the disposable diaper of the 2nd embodiment shown in Fig. 6 is shunk.

Body width directional profile figure (being equivalent to the figure of Fig. 3) under the state that Fig. 8 is the flank section contraction that the disposable diaper as the 3rd embodiment is had.

Body width directional profile figure (being equivalent to the figure of Fig. 3) under the state that Fig. 9 is the flank section contraction that the disposable diaper as the 4th embodiment is had.

Body width directional profile figure (being equivalent to the figure of Fig. 3) under the state that Figure 10 is the flank section contraction that the disposable diaper as the 5th embodiment is had.

Detailed description of the invention

The present invention relates to the disposable diaper that a kind of dressing improves.

Below, for the present invention, be described with reference to accompanying drawing based on its preferred 1st embodiment.

As shown in Figure 1, the disposable diaper 1A (hereinafter also referred to diaper 1A) of the 1st embodiment of the present invention comprises: the absorbent main body 2 of lengthwise, it absorber 23 comprising the positive dough sheet 21 being configured in skin opposite face side, the back sheet 22 being configured in non-skin opposite face side and be configured between positive dough sheet 21 and back sheet 22; With the flank section 3 of retractility, it is arranged on both sides 2S, 2S along principal length direction of absorbent main body 2, and the non-skin opposite face that the set portion 41 of the magic tape 4 of the leading section 3a outside the body width direction being arranged on flank section 3 is bonded on absorbent main body 2 is worn by disposable diaper 1A.

As shown in Figure 1, the diaper 1 Central Line CL that is formed as extending for the length direction in absorbent main body 2 is symmetrical.Therefore, about the juncture of the formation of flank section 3,3, the laminated arrangement of lateral plate 24 and they and absorbent main body 2, be mainly described for the left side of Fig. 1, about right side, also identical except symmetrical.

If specifically describe diaper 1A, then as shown in Figure 1, the absorbent main body 2 of diaper 1A has the rectangular shape of lengthwise, and be divided into the veutro being positioned at wearer when wearing veutro portion A, be positioned at the drosal part B of the dorsal part of wearer and be positioned at the crotch C of crotch part.

The principal length direction of diaper 1A is from the Y-direction of veutro portion A through the figure of crotch C to drosal part B, is equidirectional with the length direction of absorbent main body 2.The body width direction of diaper 1A is the X-direction in the figure orthogonal with Y-direction, is equidirectional with the width of absorbent main body 2.In the following description, also by the direction corresponding with diaper body length direction of the principal length direction of diaper or the component parts of this diaper referred to as Y-direction, by the direction corresponding with diaper body width of the body width direction of diaper or the component parts of this diaper referred to as X-direction.In addition, the skin opposite face (inner surface) of the component parts of diaper or diaper is the face when wearing towards the skin side of wearer, and the non-skin opposite face (outer surface) of the component parts of diaper or diaper is the face when wearing towards the skin opposition side of wearer.

If be described in detail absorbent main body 2, then as shown in figures 1 and 3, absorbent main body 2 comprises the back sheet 22 of the difficult permeability (comprising water-repellancy) of the positive dough sheet 21 of liquid permeability, liquid impermeability or liquid and is arranged on the absorber 23 of the liquid retainability between described two sheets 21,22.Positive dough sheet 21 and back sheet 22 are respectively as shown in Figure 1, cover whole of skin abutment face and whole of non-skin abutment face of absorber 23, extend from the periphery of absorber 23, be fixed by weldings such as bonding agent or heat sealing such as hot melts in the part of extending.Positive dough sheet 21 is identical with the length of back sheet 22 in principal length direction (Y-direction), but is formed as shown in Figure 3 being shorter than back sheet 22 in body width direction (X-direction).The plan view shape of back sheet 22 is formed as identical with absorbent main body 2.In addition, as shown in Figure 3, back sheet 22 comprises the leakage prevention sheet 22a of the difficult permeability (comprising water-repellancy) of liquid impermeability or liquid and is bonded on the composite sheet of outer non-woven fabrics 22b of non-skin opposite face side of leakage prevention sheet 22a via outer bond layer 61.The plan view shape of outer non-woven fabrics 22b is identical with absorbent main body 2, and leakage prevention sheet 22a except the width of X-direction is slightly little, has the plan view shape identical with outer non-woven fabrics 22b as shown in Figure 3.

In addition, absorbent main body 2 comprises the lateral plate 24 of both sides 2S, the 2S along Y-direction being configured in absorbent main body 2.As shown in figures 1 and 3, lateral plate 24 is the skin abutment face side of positive dough sheet 21, arranges the sidepiece 2S be fixed on along the Y direction overall via the fixed part 27 extended in principal length direction (Y-direction).Fixed part 27 in diaper 1A as shown in Figure 3, the inner surface (being P side Fig. 3) of the part of extending outside X-direction from positive dough sheet 21 of sheet 22 is upper and lower overleaf states on the inner surface (being P side in Fig. 3) of flank section 3, formed by various known method adhesive-applying or by the mutual welding processing of various known method, and be configured in the total length of absorbent main body 2.The end of the inner side of the X-direction of lateral plate 24 (the diaper centre line C L near extending in principal length direction) becomes free end, and the part of the lateral plate 24 extended outside X-direction than fixed part 27 engages with back sheet 22 and forms wing flap portion at the sidepiece 2S along Y-direction of absorbent main body 2.

As shown in Figure 3, lateral plate 24 is made up of the sheet of the difficult permeability of 1 liquid, this sheet along principal length direction both sides 24I, 24O to this sheet non-skin opposite face rollover folding and be formed as two-layer.Specifically, inside X-direction, the sidepiece 24I of (the CL side, diaper Central Line extended in principal length direction) turns down to the position of fixed part 27 to the non-skin opposite face side (outer surface side) (be Q side in Fig. 3) of sheet, at the near top of the turnover through between the sheet of turnover of crotch C, arrange the multiple three-dimensional fold formation elastomeric element 25 be fixed with at principal length direction (Y-direction) upper elongation state.In addition, end 24O outside X-direction is to non-skin opposite face side (outer surface side) (being Q side in Fig. 3) turnover of sheet to the position of fixed part 27, at the near top of the turnover through between the sheet of turnover of crotch C, arrange the multiple leg creases formation elastomeric elements 26 be fixed with at principal length direction (Y-direction) upper elongation state.In addition, lateral plate 24 the region except being configured with three-dimensional fold formation elastomeric element 25 and be configured with leg creases formation elastomeric element 26 region except region, the multiple weld portion (not shown) by configuring intermittently through between the sheet of turnover engage and integrated.Weld portion (not shown) can use such as heat sealing, ultrasound involution, high frequency involution or their combinations of more than two kinds etc. and be formed.

The lateral plate 24 formed in mode is as above when wearing, at the contractility of crotch C by three-dimensional fold formation elastomeric element 25, the ratio fixed part 27 of lateral plate 24 becomes three-dimensional fold by inner side, body width direction (X-direction) (near centre line C L).Specifically, at crotch C, the ratio fixed part 27 of lateral plate 24 leaves from positive dough sheet 21 by the top of the turnover inside X-direction and forms three-dimensional fold.Further, by the contractility of leg creases formation with elastomeric element 26, the ratio fixed part 27 of lateral plate 24 becomes leg creases by outside X-direction.

As shown in Figure 1, in diaper 1A, respectively towards the mode that X-direction is protruding outside, flank section 3,3 is installed with both sides 2S, the S of the absorbent main body 2 from drosal part B.In addition, at the leading section 3a of flank section 3, the magic tape 4 with set portion 41 is arranged outside X-direction from leading section 3a with extending.So, diaper 1A is the so-called flat type disposable diaper being provided with the flank section 3,3 being provided with magic tape 4.

If to flank section 3 being fixedly described in detail to absorbent main body 2, then the end 3d of absorbent main body 2 side of flank section 3 is clipped by lateral plate 24 and back sheet 22, is namely clipped by two sheets between the non-skin abutment face side and the skin abutment face side of back sheet 22 of lateral plate 24 and is fixed on absorbent main body 2.

As shown in Figures 2 and 3, flank section 3 comprises: two sheets (flank section sheet) 31,32; Multiple elastomeric element 33, they are fixed between two sheets 31,32, and extend in X-direction; Main body side bond layer 35, the end side of absorbent main body 2 side of multiple elastomeric element 33 is fixed by it, and extends in the Y direction; With front bond layer 36, the end side of the 3a side, leading section of the flank section 3 of elastomeric element 33 is fixed by it, and extend in the Y direction, and this flank section 3 is fixed between two sheets 31,32 by main body side bond layer 35 and front bond layer 36 by the elastomeric element 33 of elongation state to be formed.Below specifically describe.Flank section 3, in diaper 1A, is rectangular shape as shown in Figure 2 under the state in plane expansion.In addition, as shown in Fig. 4 (a) He (b), flank section 3 between two sheets 31,32 of the fabric rectangular shape of nonwoven, arranges fixing multiple elastomeric element 33 with the state of extending in the X direction and formed.The elastomeric element 33 of the state of extending separates roughly equal compartment of terrain configuration in the Y direction.

In addition, as shown in Fig. 4 (a) He (b), flank section 3 comprises: two sheets 31,32; Elastomeric element 33; The main body side bond layer 35 fixing by the end side of absorbent main body 2 side of this elastomeric element 33; With the front bond layer 36 that the end side of the 3a side, leading section of the flank section 3 by this elastomeric element 33 is fixing, also comprise multiple middle fixed part 37, this middle fixed part 37 is configured between this main body side bond layer 35 and this front bond layer 36, fix two sheets 31,32, and extend in the Y direction.Herein, what the leading section 3a of so-called flank section 3 referred to flank section 3 is the end of opposition side with the end 3d of absorbent main body 2 side.

Middle fixed part 37 becomes bond layer in diaper 1A.Main body side bond layer 35, front bond layer 36 and middle fixed part 37 are all extend in the Y-direction of flank section 3 and formed.The region of middle fixed part 37 between main body side bond layer 35 and front bond layer 36 and zone line 30 are provided with multiple.As shown in Fig. 2 and Fig. 4 (a), the width of middle fixed part 37 is less than the width of any one in described two bond layers 35,36, and in diaper 1A, separates equal intervals be in the X direction formed multiple intermittently at zone line 30.

As shown in Fig. 4 (a), the flank section 3 of diaper 1A is formed in the following manner, that is: the elastomeric element 33 of elongation state is in the X direction configured between two sheets 31,32 of the fabric rectangular shape of nonwoven with separating equal intervals in the Y direction, and multiple elastomeric element 33 is fixed between two sheets 31,32 by main body side bond layer 35, front bond layer 36 and middle fixed part 37.In main body side bond layer 35, front bond layer 36 and middle fixed part 37, as shown in Fig. 4 (a), multiple elastomeric element 33 is fixed between two sheets 31,32 via the bonding agent forming each bond layer 35,36,37 with elongation state, and do not arranging the position of elastomeric element 33, two sheets 31,32 directly engage via the bonding agent forming each bond layer 35,36,37 each other.And, as shown in Fig. 4 (a), at the bearing of trend of flank section 3, between main body side bond layer 35 and the middle fixed part 37 be adjacent, adjacent middle fixed part 37 is to each other and between front bond layer 36 and the middle fixed part 37 be adjacent, and is formed with the non-adhesive region 38 not having placement of adhesives respectively.In the diaper 1A of the 1st embodiment, the bearing of trend of flank section 3 is consistent with diaper X-direction.

Main body side bond layer 35, front bond layer 36 and middle fixed part 37 all intersect with all multiple (being more preferably more than 3) elastomeric elements 33 extended in X-direction, and the total length of the Y-direction of flank section 3 extends in the Y direction.

Non-adhesive region 38 intersects with all multiple (being more preferably more than 3) elastomeric elements 33 extended in X-direction similarly, and the total length of the Y-direction of flank section 3 extends in the Y direction.

The width of main body side bond layer 35 or front bond layer 36 is preferably more than 1.5mm below 15mm, and then is preferably more than 3mm below 12mm.

As mentioned above, the width of each middle fixed part 37 is less than the width of any one in two bond layers 35,36, is preferably more than 0.3mm below 1.5mm, and then is preferably more than 0.5mm below 1.2mm.

In addition, the width in each non-adhesive region 38 is preferably more than 2mm below 6mm, and then is preferably more than 3mm below 5mm.

The flank section 3 formed in mode as above, as shown in Fig. 4 (b), in its natural state, by the contractility of multiple elastomeric element 33, between main body side bond layer 35 and front bond layer 36, form the plication region GT that the pleat that is not fixed on the hollow of sheet 31,32 by elastomeric element 33 is formed.Described pleat is also formed at the adjacent middle fixed part 37 of X-direction each other, and extends on the direction intersected with multiple elastomeric element 33.If specifically describe, then in the flank section 3 of diaper 1A, elastomeric element 33 is fixed on main body side bond layer 35, front bond layer 36 and middle fixed part 37 with elongation state, under the naturalness that this elastomeric element 33 shrinks, as shown in Fig. 4 (b), be formed with elastomeric element 33 on the two sides of flank section 3 and be not fixed on multiple hollow pleats on sheet 31,32.Each pleat extends in the Y direction in the mode of intersecting with multiple elastomeric element 33 and is formed.If be described in further detail, then as shown in Fig. 4 (b), the pleat being formed at flank section 3 is formed in zone line 30, by the contraction of elastomeric element 33, two sheets 31,32 are not fixed at elastomeric element 33 in each non-adhesive region 38 of the hollow on sheet 31,32 in the direction left from elastomeric element 33 convexly bulging, in each middle bond layer 37, become concavity towards elastomeric element 33 on the other hand, there is concaveconvex shape.This kind of pleat also can not disappear completely under the wearing effect of diaper.Especially, in diaper 1A, middle fixed part 37 configures at zone line 30 with separating equal intervals in the X direction, therefore roughly the same from the height of elastomeric element 33 bulging in each non-adhesive region 38 with two sheets 31,32, and be respectively formed at pleat roughly the same at the height of flank section 3 thickness direction on two sides of plication region GT of flank section 3.

Moreover, as shown in Fig. 4 (b), at the main body side bond layer 35 of flank section 3 and the arranging position of front bond layer 36, also by the contraction of elastomeric element 33, form concaveconvex shape on the two sides of flank section 3, be formed with multiple pleat extended in the Y direction.But as mentioned above, elastomeric element 33 is fixed between two sheets 31,32 by main body side bond layer 35 and front bond layer 36, does not form hollow pleat.In addition, due at main body side bond layer 35 and front bond layer 36, the contraction of elastomeric element 33 is restricted, and therefore the concavo-convex height at flank section 3 thickness direction of the pleat of two bond layers 35,36 is less than the concavo-convex height at equidirectional of the pleat of zone line 30.In addition, in the region of main body side bond layer 35 and front bond layer 36, there is retractility little compared with zone line.

Leading section 3a outside the body width direction of flank section 3 is provided with magic tape 4.If be described in detail magic tape 4, then magic tape 4 comprises band substrate sheets 42 and has the set portion 41 of multiple copulational protuberance in the outside of the X-direction of band substrate sheets 42.As shown in Figure 2, the magic tape 4 of diaper 1A is rectangular shape in the deployed state.Set portion 41 is fixed on the outside of the X-direction of the band substrate sheets 42 formed in the mode identical with the plan view shape of magic tape 4 by magic tape 4.Magic tape 4, in diaper 1A, as shown in Figure 3, is bonded on the outer surface (in Fig. 3 Q side) of the leading section 3a of flank section 3 via band connecting adhesive oxidant layer 63.Roughly consistent with the width in involution region 60 in the X direction with connecting adhesive oxidant layer 63, and formed continuously in the total length of the Y-direction of magic tape 4.The magic tape 4 of joint like this turns down in the skin opposite face side (inner surface side) (in Fig. 3 P side) of the use forward side alar part 3 of diaper 1A, launches in use to use.Moreover, the non-skin opposite face (outer surface) of the veutro portion A of diaper 1A, be provided with make set portion 41 set of magic tape 4 take sheet 5.

The installation of the flank section 3 being fixed with magic tape 4 to the sidepiece 2S of absorbent main body 2 is described.

In disposable diaper of the present invention, the outside side edge part 2S1 along principal length direction of absorbent main body 2 is positioned on the plication region GT of flank section 3 when overlooking, about the diaper 1A of the 1st embodiment, being configured in when overlooking on the plication region GT be made up of hollow pleat of flank section 3 along side edge part 24S1 outside the X-direction of Y-direction of lateral plate 24.So, in diaper 1A, the outside side edge part 2S1 of absorbent main body 2 is the outside side edge part 24S1 of lateral plate 24.Moreover the outside side edge part 2S1 of so-called absorbent main body 2 refers to the part be positioned at outside X-direction in the sidepiece 2S along its length of absorbent main body 2.

Below, if specifically describe, then as mentioned above, as shown in Figure 1, diaper 1A, at drosal part B, is configured with the flank section 3,3 of retractility respectively at both sides 2S, 2S of absorbent main body 2.In addition, the end 3d of flank section 3 is clipped by lateral plate 24 and back sheet 22 and is fixed on absorbent main body 2.In addition, as shown in figures 1 and 3, lateral plate 24 is in diaper 1A, via the fixed part 27 be configured in the total length of absorbent main body 2, on the inner surface (being P side in Fig. 3) of the upper and flank section 3 of the inner surface (being P side Fig. 3) of the part of extending outside X-direction from positive dough sheet 21 throughout the skin abutment face side being configured in the positive dough sheet 21 of absorbent main body 2 endlong of absorbent main body 2 and for the back sheet 22 of absorbent main body 2.Diaper 1A is in the region being configured with flank section 3 of drosal part B, lateral plate 24 is fixed on the sheet 31 forming flank section 3 as shown in Figure 3 via fixed part 27, be fixed on the part of extending outside X-direction from the lateral margin of positive dough sheet 21 of back sheet 22 via continuous print bonding agent on principal length direction (connecting adhesive oxidant layer 62).Like this, be fixed on the flank section 3 of both sides 2S, 2S of absorbent main body 2, when overlooking, outside the X-direction of lateral plate 24, the plication region GT be made up of hollow pleat of side edge part 24S1 and flank section 3 configures overlappingly, covers a part of plication region GT with side edge part 24S1 outside the X-direction of the lateral plate 24 of disengaged condition.

As shown in Figure 3, under the naturalness that flank section is shunk, the area (S2) of lateral plate 24 and the overlapping region T of plication region GT is relative to the ratio (S2/S1) of the gross area (S1) of the plication region GT of flank section 3, with regard to consider flank section 3 main body side bond layer 35 region retractility basis on prevent skin trace or prevent flank section sheet to regard to the viewpoint of the attaching of skin, be preferably more than 1/8, and then be preferably more than 1/5, and be preferably less than 2/3, and then be preferably less than 1/2, more specifically, be preferably less than more than 1/8 2/3, and then be preferably less than more than 1/5 1/2.Moreover, the gross area (S1) of the plication region GT of so-called flank section 3 refers to the area during plication region GT of the flank section 3 under the naturalness of overlooking and flank section 3 being shunk, and the area (S2) of so-called overlapping region T refers to area when overlooking overlapping region T (reference Fig. 3) with the plication region GT under the naturalness making flank section 3 shrink of lateral plate 24.

Diaper 1A, in the region except being configured with the region of flank section 3 of drosal part B, crotch C and veutro portion A, lateral plate 24 is fixed on the part of the back sheet 22 extended outside X-direction from the lateral margin of positive dough sheet 21 as shown in Figure 1 via fixed part 27, and then is fixed on the part of the back sheet 22 extended outside X-direction from the lateral margin of positive dough sheet 21 via continuous print bonding agent on principal length direction (connecting adhesive oxidant layer 62).Fixed part 27 and connecting adhesive oxidant layer 62 are formed in the roughly total length of absorbent main body 2.

In addition, diaper 1A, at the both ends of the Y-direction of absorbent main body 2, i.e. a part of drosal part B and a part of veutro portion A, lateral plate 24 is fixed on positive dough sheet 21 via bond layer 64 as shown in Figure 3.Bond layer 64 is arranged on as shown in Figure 3 than the position of fixed part 27 by (CL side, Central Line) inside X-direction, is arranged on a part of veutro portion A and drosal part B, is not arranged on crotch C on the other hand.

When wearer wears the disposable diaper 1A of the 1st embodiment, launch magic tape 4 from flank section 3, stretch magic tape 4 to pull, under the state that flank section 3 is extended, the pressing of the set portion 41 of this magic tape 4 is anchored at and takes on sheet 5.

The constituent material of diaper 1A is described.

As the positive dough sheet 21, back sheet 22, the absorber 23 that form absorbent main body 2, can use with no particular limitation respectively always for the parts etc. of the absorbent commodity such as disposable diaper, physiological napkin.Such as, as positive dough sheet 21, hydrophilic can be used and the non-woven fabrics of liquid permeability or three-dimensional apertured film etc.As back sheet 22, leakage prevention sheet 22a can use the resin molding of liquid impermeability or the difficult permeability (comprising water-repellancy) of liquid, and outer non-woven fabrics 22b can use the parts be made up of the non-woven fabrics utilizing various method for making to make (such as hot-wind nonwoven cloth, spun-bonded non-woven fabrics, liquid drugs injection non-woven fabrics, tailor's cushion non-woven fabrics etc.).In addition, as absorber 23, the aggregation of the fibers such as the coated paper pulp fiber of clad sheet formed with water penetration thin paper or non-woven fabrics (also can be non-woven fabrics) can be used or make the material etc. of the absorbent core keeping water-absorbent polymer particles in the aggregation of above-mentioned fiber.As the lateral plate 24 forming three-dimensional fold and leg creases, film, non-woven fabrics, fabric or their lamination sheets etc. can be used.

As the sheet (flank section sheet) 31,32 forming flank section 3, can use with no particular limitation always for various of the absorbent commodity such as disposable diaper, physiological napkin.Such as, as sheet 31,32, non-woven fabrics, fabric, film or their lamination sheets etc. can be used.

As elastomeric element 33, three-dimensional fold formation elastomeric element 25, leg creases formation elastomeric element 26, the elastomeric element of the thread of polyethylene-alphaolefin copolymers such as comprising natural rubber, polyurethane, polystyrene-poly isoprene copolymer, polystyrene-polybutadiene copolymer, ethyl acrylate-ethylene etc. or wire can be used.With regard to the viewpoint such as summary of manufacturing cost, manufacturing step, the parts that the multiple elastomeric elements 33 being configured in a flank section are preferably identical type configure with identical percentage elongation.

As long as the set portion 41 and the band substrate sheets 42 that form magic tape 4 are usual for can be used for the material of the absorbent commodities such as disposable diaper, then can use with no particular limitation.Such as, as set portion 41, the sunny side parts etc. in " Magic Tape (registered trade mark) " (manufacture of KURARAY company), " Quicklon (registered trade mark) " (manufacture of YKK company), " Magi Cloth (registered trade mark) " (manufacture of Kanebo Bell-Touch company) etc. can be used.As band substrate sheets 42, the synthetic resin such as polyethylene, polypropylene or polyethylene terephthalate can be used and comprise the sheet of composite of two or more above-mentioned synthetic resin or non-woven fabrics etc.

As to form the outer bond layer 61 fixed by leakage prevention sheet 22a and outer non-woven fabrics 22b or will the sheet 31 of flank section 3 be formed, the bonding agent of the 32 main body side bond layers 35 fixed is the preferred material in order to the bonding agent between fixing each parts of representative, can enumerate: amorphous polyolefins, vinyl-vinyl acetate copolymer (EVA), vinyl-acrylate copolymer (EEA), styrene butadiene styrene block copolymer (SBS) (SBS), styrene isoprene styrene block copolymer (SIS) (SIS), styrene-ethylene/butylene-styrene block copolymer (SEBS), the thermoplastic polymers such as styrene-ethylene/propylene-styrene block copolymer (SEPS) and their mixture etc.Bonding agent is preferably heat molten type.

Main body side bond layer 35, front bond layer 36, middle fixed part 37, outer bond layer 61, connecting adhesive oxidant layer 62, band connecting adhesive oxidant layer 63 and bond layer 64, be after any one or the described bonding agent of both upper coatings utilizing various known method in two sheets clipping above-mentioned each (above-mentioned each bond layer), make these two sheets overlapping and carry out pressurizeing being formed.

Moreover, the application pattern forming the bonding agent of each bond layer preferably uses spray gun, painting rifle etc. to carry out the coating of whole of what is called as adhesive applicating machine, but as adhesive applicating machine, bead spray gun (bead gun), spiral spray gun, Ω shape spray gun, transfer roll etc. also can be used to carry out the pattern coating of linearity, helical form, Ω shape, point-like etc.

The flank section 3 that disposable diaper of the present invention has, the manufacture method of lateral plate 24 are not limited to them, and can be manufactured by arbitrary method.

About the preference of the manufacture method of the flank section in disposable diaper, the situation enumerating the flank section 3 manufactured in diaper 1A is that example is described.

Be described with reference to the example of Fig. 5 to the preferred manufacture method of flank section 3, the manufacturing installation 7 of the telescopic sheet shown in Fig. 5 comprises: a pair rectangular tectosome 71,71 of conveyance separating predetermined distance configured in parallel; Elastomer winding mechanism 72, elastomeric element is wound on a pair this conveyance and uses rectangular tectosome by it, and make this elastomeric element be oriented that longitudinal direction (in figure R direction) transported with rectangular tectosome with this intersects towards; With integrated mechanism 73, it this elastomer winding mechanism 72 is clipped in a pair by this conveyance this elastomeric element 33 that rectangular tectosome transports bandedly carries out integration between sheet 31', 32' by being wound on.Preferably endless belt as described below is used as the rectangular tectosome 71 of silk conveyance, that is: this endless belt has at the forward transport portion of R direction movement with at the reverse transport portion with the movement in the opposite direction of R side, and only forward transport portion engages with elastomeric element 33 and transported to R direction by this elastomeric element 33.Endless belt is erected on pulley or gear, this pulley or gear is rotated and drives.In addition, as the conveyance of each silk with rectangular tectosome 71, also only can use this kind of endless belt, but as shown in Figure 5, as the rectangular tectosome 71 of each silk conveyance, preferably use the parts this kind of endless belt being configured to upper and lower two-stage.By arranging speed difference to upper and lower conveyer belt, can to be wound at first a pair conveying with rectangular tectosome 71,71 time rise, by orientation amendment when overlooking being jagged elastomeric element 33 be make elastomeric element 33 in R direction the state being orientated multiple parallel shape spaced apart, and be fixed on a pair banded between sheet 31', 32'.As silk conveyance with rectangular tectosome 71, the component of round clava around central axis rotary actuation by being provided with groove or raised line at side face helically can also be used.

In the preferred manufacture method of flank section 3, as shown in Figure 5, on the banded sheet 31' of the blank as sheet 31, by known adhesive applicating machine 76 respectively zonally continuously coating for the formation of the bonding agent 34 of main body side bond layer 35, front bond layer 36 and middle fixed part 37.Moreover, bonding agent 34 also can continuously coating on banded sheet 32'.

Then, after adhesive applicating two banded sheet 31', 32' are collaborated in the mode of the elastomeric element 33 clipping elongation state between the two, by a pair pressure holding roller 74 as integrated mechanism 73 from making their integrations to their pressurizations up and down.Then, by being cut off by the elastomeric element 33 extended to side with the shut-off mechanism 77 such as cutting machine with amputation knife, Stretchable sheet 3' is obtained.

Then, by arbitrary shut-off mechanism, obtained telescopic sheet 3' is cut into successively the length of each flank section 3.In this way, can continuous seepage flank section 3 expeditiously.

Diaper 1A can use the continuum (telescopic sheet 3') of above-mentioned flank section 3, such as, manufacture in mode as follows.

Specifically, the continuum of above-mentioned flank section 3 (telescopic sheet 3') such as can be used to manufacture diaper 1A efficiently according to the order of following (1) ~ (11).

(1) the continuous net cloth that will be coated with on the continuous screen cloth of magic tape 4 with set portion 41 for the formation of the bonding agent of band connecting adhesive oxidant layer 63 cuts into the length of each magic tape 4 successively, is arranged on discontinuously on the telescopic sheet 3' that obtains in above-mentioned mode.(2) magic tape 4 turned down and be temporarily fixed on stretchable sheet 3'.(3) stretchable sheet 3' is cut into successively the length of each flank section 3.(4) make leakage prevention sheet 22a integrated via outer bond layer 61 with outer non-woven fabrics 22b with another step, form back sheet 22.(5) (main body connects) bonding agent for the formation of connecting adhesive oxidant layer 62 is coated in continuously the sidepiece in the outside of back sheet 22.(6) flank section 3 being provided with magic tape 4 is fixed on back sheet continuum via connecting adhesive oxidant layer 62.(7) at positive dough sheet continuum upper part ground adhesive-applying layer 64.(8) in order to obtain lateral plate 24, in a further step the both sides of serialgram are turned down.Utilize bonding agent to be fixed on elongation state by elastomeric element 25 and turn down top through one of turnover, utilize bonding agent that elastomeric element 26 is fixed on another turnover top with elongation state.Then, by heat sealing etc., the region except being configured with elastomeric element 25 and be configured with elastomeric element 26 region except region weld portion and integrated is set.(9) absorber 23 is configured discontinuously at flow direction between the positive dough sheet continuum on the back sheet continuum being fixed with flank section 3 and this back sheet continuum, and then lateral plate 24 is configured on the sidepiece of the continuum of this duplexer, via connecting adhesive oxidant layer 62 and bond layer 64, lateral plate 24 is fixed on the sidepiece of the continuum of duplexer.(10) form the continuum of diaper 1A, the continuum of this formation diaper 1A forms at the continuum of the duplexer securing lateral plate 24 fixed part 27 utilizing heat sealing etc. to be formed, and then fixing lateral plate 24 and integration obtains.(11) continuum of diaper 1A is cut into every 1 product and manufactures diaper 1A continuously.

The manufacture method of disposable diaper, except using the flank section 3 that obtains in the above described manner, can manufacture disposable diaper according to always known method.

Then, action effect when using the diaper 1A of above-mentioned embodiments of the present invention is described.

As shown in Figures 2 and 3, in diaper 1A, being configured on the plication region GT be made up of hollow pleat of flank section 3 along side edge part 2S1 outside the X-direction of Y-direction of absorbent main body 2.Therefore, extend by making retractility flank section 3, and make the set portion 41 of this magic tape 4 be bonded on A side, veutro portion take on sheet 5, even if under the state of wearing in the dress of the diaper 1A that pressure uprises of the sidepiece 2S of absorbent main body 2, outside side edge part 2S1 also covers the skin abutment face side in the region of the main body side bond layer 35 of the elastomeric element 33 of flank section 3, the vestige of the pleat of the main body side bond layer 35 of the elastomeric element 33 of flank section 3 is not easily attached on the skin of wearer, and the sheet 31 of flank section 3 is not easily attached to the skin of wearer, dressing improves.Especially, in diaper 1A, side edge part 24S1 outside the X-direction that outside the X-direction of absorbent main body 2, side edge part 2S1 is equivalent to lateral plate 24, because outside side edge part 24S1 is configured on the plication region GT be made up of hollow pleat of flank section 3, therefore plays described effect further.

In addition, in diaper 1A, as shown in Figure 3, flank section 3 has multiple middle fixed part 37 between main body side bond layer 35 and front bond layer 36, in its natural state, be respectively formed at middle fixed part 37 the hollow pleat that the direction that intersects with elastomeric element 33 extends each other.The concavo-convex height at flank section 3 thickness direction of this pleat is greater than the concavo-convex height at equidirectional of the pleat in main body side bond layer 35 and front bond layer 36, therefore by the multiple hollow pleat extended in the direction intersected with elastomeric element 33, resiliency is improved, the vestige of the pleat of the main body side bond layer 35 of the elastomeric element of flank section 3 is more not easily imprinted on the skin of wearer, and dressing improves further.Especially in diaper 1A, be formed at the roughly the same at the height of flank section 3 thickness direction of the pleat of the plication region GT of flank section 3, be therefore easy to play above-mentioned effect further.

Then, the diaper of the 2nd embodiment of disposable diaper of the present invention is described.The disposable diaper 1B of the 2nd embodiment, the shape being formed at the pleat of the plication region GT of flank section 3 is different from the diaper 1A of the 1st embodiment.About the diaper 1B of the 2nd embodiment, mainly the aspect different from the diaper 1A of the 1st embodiment is described, for identical aspect, adds identical symbol and omit the description.In not mentioning especially, suitably application is about the explanation of the diaper 1A of the 1st embodiment.

In diaper 1B, in the same manner as diaper 1A, as shown in Figure 6 and Figure 7, the zone line 30 of flank section 3 between main body side bond layer 35 and front bond layer 36 has middle fixed part 37 that fix two sheets 31,32, that be made up of the multiple bond layers extended in the Y direction.

In addition, in diaper 1B, in the same manner as diaper 1A, as shown in Figure 6 and Figure 7, the end 3d of flank section 3 is clipped by lateral plate 24 and back sheet 22 and is fixed on absorbent main body 2, and the outside side edge part 2S1 of absorbent main body 2 is equivalent to the outside side edge part 24S1 of lateral plate 24.

About the middle fixed part 37 of the formation flank section 3 of diaper 1B, as shown in Figure 6, the gap-forming each other of adjacent in the X direction middle fixed part 37 is that main body side bond layer 35 side is shorter than front bond layer 36 side.As shown in Figure 6, the width of middle fixed part 37 is less than the width of any one in described two bond layers 35,36.Specifically, in diaper 1B, zone line 30 is divided into the main body side zone line 30b of main body side bond layer 35 side and these two regions of front zone line 30a of front bond layer 36 side.At main body side zone line 30b, separate in the X direction and be configured with multiple middle fixed part 37 at equal intervals discontinuously, at front zone line 30a, also separate in the X direction and be configured with multiple middle fixed part 37 at equal intervals discontinuously.And as shown in Figure 6, middle fixed part 37 interval each other adjacent being in the X direction configured in main body side zone line 30b is shorter than middle fixed part 37 interval each other adjacent being in the X direction configured in front zone line 30a.Moreover fixed part 37 interval each other in the middle of so-called is identical implication with the width in non-adhesive region 38.

In diaper 1B, the width of main body side bond layer 35 or front bond layer 36 is preferably more than 1.5mm below 15mm, and then is preferably more than 3mm below 12mm.

As mentioned above, the width of each middle fixed part 37 is less than the width of any one in two bond layers 35,36, in diaper 1B, is preferably more than 0.3mm below 1.5mm, and then is preferably more than 0.5mm below 1.2mm.

In diaper 1B, middle fixed part 37 interval each other (width in each non-adhesive region 38) adjacent being in the X direction configured in main body side zone line 30b is preferably more than 2mm below 4mm, and then is preferably more than 2.5mm below 3.8mm.

In addition, in diaper 1B, middle fixed part 37 interval each other (width in each non-adhesive region 38) adjacent being in the X direction configured in front zone line 30b is preferably more than 3mm below 6mm, and then is preferably more than 3.5mm below 5.5mm.

The flank section 3 of diaper 1B is also formed as follows in the same manner as diaper 1A: separated in the Y direction between two sheets 31,32 being configured in the fabric rectangular shape of nonwoven at equal intervals by the elastomeric element 33 of elongation state in the X direction, be fixed between two sheets 31,32 by multiple elastomeric element 33 by main body side bond layer 35, front bond layer 36 and middle fixed part 37.

In the flank section 3 of the diaper 1B formed in mode as above, as shown in Figure 7, in its natural state, by the contractility of multiple elastomeric element 33, between main body side bond layer 35 and front bond layer 36, formed and be not fixed on by elastomeric element 33 the plication region GT that the hollow pleat on sheet 31,32 forms, the plication region GT being formed at flank section 3 can be divided into the relatively high high plication region GTa of the height of the pleat of the relatively low low plication region GTb of the height of the pleat of main body side bond layer 35 side and front bond layer 36 side.From skin abutment face side to the height of non-skin abutment face side when the height of pleat refers to analysing and observe under the naturalness that elastomeric element 33 shrinks.If specifically describe, then in the flank section 3 of diaper 1B, elastomeric element 33 is fixed on main body side bond layer 35, front bond layer 36 and middle fixed part 37 with elongation state, under the naturalness that this elastomeric element 33 shrinks, be formed with elastomeric element 33 on the two sides of flank section 3 and be not fixed on multiple hollow pleats that sheet 31,32 is formed.Each pleat extends in the Y direction in the mode of intersecting with multiple elastomeric element 33 and is formed.If be described in further detail, then as shown in Figure 7, the fold being formed at flank section 3 is formed in zone line 30, by the contraction of elastomeric element 33, two sheets 31,32 are not fixed on each non-adhesive region 38 of the hollow on sheet 31,32 towards the direction left from elastomeric element 33 convexly bulging at elastomeric element 33, become concavity at each middle bond layer 37 towards elastomeric element 33 on the other hand, and there is concaveconvex shape.Especially in diaper 1B, zone line 30 is divided into main body side zone line 30b and front zone line 30a, and middle fixed part 37 interval being each other configured in main body side zone line 30b is equably shorter than middle fixed part 37 interval being each other configured in front zone line 30a equably.Therefore, about two sheets 31,32 in each non-adhesive region 38 from the height of elastomeric element 33 bulging, the height at flank section 3 thickness direction being namely formed at the pleat on the two sides of flank section 3 respectively, the plication region of main body side zone line 30b side is low compared with the plication region of zone line 30a side, front.So, in diaper 1B, the plication region of main body side zone line 30b side becomes low plication region GTb, and the plication region of zone line 30a side, front becomes high plication region GTa, and plication region GT can be divided into low plication region GTb and high plication region GTa.The height (h1) of the pleat of high plication region is more than 0.5mm, be preferably more than 1mm, the upper limit is below 3mm, be preferably below 9mm, the height (h2) of the pleat of low plication region is more than 0.1mm, is preferably below 8mm, the absolute value delta h (h1-h2) of the difference of the height of the pleat of high plication region and low plication region is 0.5mm, be preferably more than 1.0mm, the upper limit is below 5mm, is preferably below 3mm.By being set within the scope of this by Δ h, and below the thickness becoming lateral plate, even if when the resiliency of pleat disappears or be less, also lateral plate end edge portion is accommodated in low plication region as prerequisite, and not easily produce step, skin sense of touch is good.

The diaper 1B of second embodiment of the present invention, is equivalent to being configured on the low plication region GTb of the plication region GT be made up of hollow pleat of flank section 3 along side edge part 24S1 outside the X-direction of Y-direction of the lateral plate 24 of the outside side edge part 2S1 of absorbent main body 2.In other words, be fixed on the flank section 3 of both sides 2S, 2S of absorbent main body 2, in diaper 1B, outside the X-direction of lateral plate 24, side edge part 24S1 configures in the mode overlapping with the low plication region GTb in the plication region GT be made up of hollow pleat of flank section 3, covers a part of low plication region GTb with side edge part 24S1 outside the X-direction of the lateral plate 24 of disengaged condition.

As shown in Figure 7, the area (S3) of low plication region GTb under the naturalness that flank section 3 is shunk, flank section 3 is relative to the ratio (S3/S1) of the gross area (S1) of plication region GT, with regard to the viewpoint of the breathability and retractility of guaranteeing flank section 3, be preferably less than more than 1/8 2/3, and then be preferably less than more than 1/5 1/2.

In addition, in diaper 1B, under the naturalness that flank section 3 is shunk, the area (S2) of lateral plate 24 and the overlapping region T of plication region GT is relative to the ratio (S2/S1) of the gross area (S1) of the plication region GT of flank section 3, just the basis considering the retractility in the region of the main body side bond layer 35 of flank section 3 prevent to skin trace or prevent flank section sheet to regard to the viewpoint of the attaching of skin, be preferably more than 1/8, and then be preferably more than 1/5, and be preferably less than 2/3, and then be preferably less than 1/2, more specifically, be preferably less than more than 1/8 2/3, and then be preferably less than more than 1/5 1/2.Moreover, the gross area (S1) of the plication region GT of flank section 3 refers to the area during plication region GT of the flank section 3 under the naturalness of overlooking and flank section 3 being shunk, the area (S3) of low plication region GTb refers to area during the low plication region GTb of the flank section 3 under the naturalness of overlooking and flank section 3 being shunk, and the area (S2) of overlapping region T refers to area when overlooking overlapping region T (reference Fig. 7) with the plication region GT under the naturalness making flank section 3 shrink of lateral plate 24.

Action effect when using above-mentioned diaper 1B is described.

About the effect of diaper 1B, the aspect different from the effect of diaper 1A is described.Not specified aspect is identical with the effect of diaper 1A, suitably the explanation of the effect of application diaper 1A.

As shown in Figure 6 and Figure 7, in diaper 1B, being configured on the low plication region GTb of the plication region GT be made up of hollow pleat of flank section 3 along side edge part 24S1 outside the X-direction of Y-direction of lateral plate 24.Therefore, the thickness of low plication region GTb is not easy thicker than high plication region GTa, and the vestige that can obtain the boundary portion along side edge part 24S1 outside the X-direction of Y-direction of lateral plate 24 is not easily imprinted on the effect on skin.

Disposable diaper of the present invention by any restriction of diaper 1A ~ 1B of the 1st ~ 2nd above-mentioned embodiment, can suitably not change.In addition, each constitutive requirements in the diaper 1A ~ 1B of the 1st ~ 2nd above-mentioned embodiment can be implemented in the scope of harmless purport of the present invention appropriately combinedly.

Such as, in the diaper 1A ~ 1B of the 1st ~ 2nd above-mentioned embodiment, as shown in Figure 3 and Figure 7, the end 3d of flank section 3 is clipped by lateral plate 24 and back sheet 22 and is fixed on absorbent main body 2, the outside side edge part 2S1 of absorbent main body 2 is equivalent to the outside side edge part 24S1 of lateral plate 24, but also can be lateral plate 24 outside side edge part 24S1 beyond position.Such as, diaper 1C ~ the 1E of the 3rd ~ 5th embodiment as shown in Fig. 8 ~ Figure 10, about flank section 3 fixing to absorbent main body 2, the end 3d of absorbent main body 2 side of flank section 3 fixes via bond layer 65 and absorbent main body 2 in the non-skin abutment face side of the back sheet 22 of absorbent main body 2.Describe in detail, in the diaper 1C of the 3rd embodiment shown in Fig. 8, the outer non-woven fabrics 22b's that back sheet 22 has is consistent and overlapping when overlooking along the outside side edge part 22b1 in principal length direction and the outside side edge part 24S1 of lateral plate 24, the outside side edge part 2S1 of absorbent main body 2 is equivalent to the outside side edge part 22b1 of the back sheet 22 and outside side edge part 24S1 of lateral plate 24, and outside side edge part 22b1,24S1 are positioned at when overlooking on the plication region GT of flank section 3.In addition, in the diaper 1D of the 4th embodiment shown in Fig. 9, the outside side edge part 22b1 along principal length direction of the outer non-woven fabrics 22b that the outside side edge part 24S1 of lateral plate 24 has than back sheet 22 more extends to X-direction, the outside side edge part 2S1 of absorbent main body 2 is equivalent to the outside side edge part 24S1 of lateral plate 24, and outside side edge part 24S1 is positioned at when overlooking on the plication region GT of flank section 3.In the diaper 1E of the 5th embodiment shown in Figure 10, the outside side edge part 22b1 along principal length direction of the outer non-woven fabrics 22b that back sheet 22 has more extends to X-direction than the outside side edge part 24S1 of lateral plate 24, the outside side edge part 2S1 of absorbent main body 2 is equivalent to the outside side edge part 22b1 of back sheet 22, and outside side edge part 22b1 is positioned at when overlooking on the plication region GT of flank section 3.

In addition, in the diaper 1A ~ 1B of the 1st ~ 2nd above-mentioned embodiment, as shown in Figure 3 and Figure 7, outside the X-direction of lateral plate 24, side edge part 24S1 covers a part of the plication region GT be made up of hollow pleat of flank section 3 with disengaged condition, but the outside side edge part 24S1 along Y-direction of lateral plate 24 also can partly be bonded on the plication region GT of flank section 3.Time bonding in this way, can prevent from causing side edge part 24S1 outside the X-direction of lateral plate 24 curling because of the external force outside expecting.Moreover, so, when outside side edge part 24S1 is bonded on the plication region GT of flank section 3, with regard to not easily hindering the viewpoint of the retractility of flank section 3, preferably in the total length of the Y-direction of flank section 3, adhesive-applying discontinuously spaced apart in the Y direction on the plication region GT of naturalness.

In addition, in the diaper 1A ~ 1B of the 1st ~ 2nd above-mentioned embodiment, as shown in Figure 3 and Figure 7, the main body side bond layer 35 of the flank section 3 of flank section 3 and overlapping on diaper thickness direction with the connecting adhesive oxidant layer 62 of back sheet 22, but also can and overlapping with the fixed part 27 of lateral plate 24, in addition, also can be overlapping with both connecting adhesive oxidant layer 62 and fixed part 27.So, because main body side bond layer 35 engages with absorbent main body in this region, so in fact main body side bond layer 62 does not stretch in this region.Thus, when making flank section 3 extend, main body side bond layer 62 does not stretch out from side edge part 24S1 outside the X-direction of lateral plate 24 to more lateral.

In addition, in the diaper 1A ~ 1B of the 1st ~ 2nd above-mentioned embodiment, as shown in Fig. 4 (a) He (b), the middle fixed part 37 forming flank section 3 becomes bond layer, be formed extended at both sides in the Y direction, but also can be formed by weldings such as heat sealings.When forming middle fixed part 37 by weldings such as heat sealings, the elastomeric element 33 configured discontinuously in the Y direction forms weld portion each other respectively, forms the group of multiple weld portion extended in the Y direction in the X direction.

In addition, in the diaper 1A ~ 1B of the 1st ~ 2nd above-mentioned embodiment, as shown in Figure 2 and Figure 6, flank section 3 has multiple middle fixed part 37 between main body side bond layer 35 and front bond layer 36, but also can not have middle fixed part 37.In addition, the width of each middle fixed part 37 is roughly even, if but width is all less than two bond layers 35,36, then and also can be uneven.In addition, in the diaper 1A of the 1st above-mentioned embodiment, as shown in Figure 2, fixed part 37 interval each other in the middle of zone line 30 configures equably, in the diaper 1B of above-mentioned 2nd embodiment, as shown in Figure 6, configure middle fixed part 37 interval each other equably at main body side zone line 30b and front zone line 30a, but also can unequally configure.

In addition, in the diaper 1A ~ 1B of above-mentioned 1st ~ 2nd embodiment, as shown in Figure 3 and Figure 7, by turning down, entirety is formed as two-layer to lateral plate 24, but also entirety can not be formed as two-layer.Such as, also can only will be configured with the part turnover of three-dimensional fold formation elastomeric element 25 and become two-layer, other parts be 1 layer.

In addition, in the diaper 1A ~ 1B of above-mentioned 1st ~ 2nd embodiment, as shown in Figure 3 and Figure 7, the mode that flank section 3 clips with the outer surface (in Fig. 3 Q side) of the inner surface of the back sheet 22 via bonding agent absorbability main body 2 (in Fig. 3 P side) and lateral plate 24 is engaged, but flank section 3 also can be bonded on the outer surface (in Fig. 3 Q side) of the back sheet 22 of absorbent main body.Such as, also (being P side in Fig. 3) of flank section 3 can be engaged via bonding agent with the outer surface (being Q side in Fig. 3) of back sheet 22, or utilize heat sealing, ultrasound involution etc. lateral plate 24, back sheet 22, flank section 3 welding or crimping to be engaged.

About above-mentioned embodiment, and then following disposable diaper is disclosed.

＜1＞

A kind of disposable diaper, it comprises: the absorbent main body of lengthwise, its absorber having the positive dough sheet being configured in skin opposite face side, the back sheet being configured in non-skin opposite face side and be configured between this positive dough sheet and this back sheet; With the flank section of retractility, it is arranged on the both sides along principal length direction of this absorbent main body, the non-skin opposite face that the set portion of the magic tape being arranged on the leading section in the outside in the body width direction of this flank section is bonded on described absorbent main body by described disposable diaper is worn, in described disposable diaper

Described absorbent main body comprises the lateral plate of the both sides along principal length direction being configured in this absorbent main body,

Described flank section comprises: two flank section sheets; Multiple elastomeric element, is fixed between these two flank section sheets, and extends in body width direction; Main body side bond layer, fixes the end side of the described absorbent main body side of the plurality of elastomeric element, and extends in principal length direction; With front bond layer, the end side of the side, leading section of the described flank section of this elastomeric element is fixed, and extend in principal length direction, described flank section is fixed between described two flank section sheets by described main body side bond layer and described front bond layer by the described elastomeric element of elongation state to be formed

In described flank section, in its natural state, by the contractility of described multiple elastomeric element, between described main body side bond layer and described front bond layer, the plication region that the pleat that formation is not fixed on the hollow of described flank section sheet by this elastomeric element is formed

Described flank section has multiple middle fixed part, and the plurality of middle fixed part is configured between described main body side bond layer and described front bond layer, is fixed by described two flank section sheets, and extends in principal length direction,

Described pleat is formed at described middle fixed part adjacent on body width direction each other, and the direction intersected with described multiple elastomeric element extends,

The outside side edge part along principal length direction of described absorbent main body is positioned at when overlooking in the described plication region of described flank section.

＜2＞

As described in the disposable diaper of < 1 >, wherein the adjacent described middle fixed part in body width direction each other between be interposed between described main body side bond layer side than short in bond layer side, described front,

In its natural state, the described plication region being formed at described flank section is divided into the relatively high high plication region of the height of the described pleat of the relatively low low plication region of the height of the described pleat of described main body side bond layer side and bond layer side, described front

The outside side edge part along principal length direction of described absorbent main body is the outside side edge part of described lateral plate, and the outside side edge part of this lateral plate is positioned at when overlooking in the described low plication region of described flank section.

＜3＞

As described in the disposable diaper of < 1 > or < 2 >, wherein said plication region comprises low plication region and high plication region, the height of described pleat is more than 0.5mm in high plication region, be preferably more than 1mm, in addition, for below 3mm, be preferably below 9mm.

＜4＞

As described in the disposable diaper of < 2 > or < 3 >, the height of the described pleat of wherein said low plication region is more than 0.1mm below 8mm.

＜5＞

As described in disposable diaper any one of < 2 > to < 4 >, the absolute value delta h of the difference of the height of the pleat of wherein said high plication region and described low plication region is more than 0.5mm, be preferably more than 1.0mm, in addition, for below 5mm, be preferably below 3mm.

＜6＞

As described in disposable diaper any one of < 1 > to < 5 >, the outside side edge part along principal length direction of wherein said absorbent main body is partly bonded in the described plication region of described flank section when overlooking.

＜7＞

As described in disposable diaper any one of < 1 > to < 6 >, the width of wherein said main body side bond layer or described front bond layer is more than 1.5mm below 15mm, is preferably more than 3mm below 12mm.

＜8＞

As described in disposable diaper any one of < 1 > to < 7 >, the width of wherein said each middle fixed part is less than the width of any one in described main body side bond layer and described front bond layer, for more than 0.3mm below 1.5mm, be preferably more than 0.5mm below 1.2mm.

＜9＞

As described in disposable diaper any one of < 1 > to < 8 >, the height of the concavo-convex thickness direction in described flank section of the pleat of wherein said main body side bond layer and described front bond layer is less than the concavo-convex height at equidirectional of the pleat of region between this main body side bond layer and this front bond layer and zone line.

＜10＞

As described in disposable diaper any one of < 1 > to < 9 >, the area (S2) of the overlapping region of under the naturalness wherein making described flank section shrink, described lateral plate and plication region is more than 1/8 relative to the ratio (S2/S1) of the gross area (S1) of the described plication region of this flank section, be preferably more than 1/5, in addition, be less than 2/3, be preferably less than 1/2.

＜11＞

As described in disposable diaper any one of < 1 > to < 10 >, wherein use non-woven fabrics, fabric, film or their lamination sheets etc. as described flank section sheet.

＜12＞

As described in disposable diaper any one of < 1 > to < 11 >, the lateral side along its length of wherein said absorbent main body is the lateral side along its length of described lateral plate.

＜13＞

As described in disposable diaper any one of < 1 > to < 12 >, the end of the described absorbent main body side of wherein said flank section is clipped by described lateral plate and described back sheet and is fixed on described absorbent main body, and the outside side edge part along principal length direction of this absorbent main body is the outside side edge part along its length of described lateral plate.

＜14＞

As described in disposable diaper any one of < 1 > to < 12 >, the end of the described absorbent main body side of wherein said flank section is fixed in the non-skin abutment face side of described back sheet and described absorbent main body, and the outside side edge part along its length of this absorbent main body is the outside side edge part along its length of described back sheet.

＜15＞

As described in disposable diaper any one of < 1 > to < 14 >, wherein said lateral plate is made up of the sheet of the difficult permeability of 1 liquid, non-skin opposite face rollover folding from the both sides along its length of this sheet to this sheet and be formed as two-layer.

＜16＞

As as described in disposable diaper any one of < 1 > to < 15 >, leading section wherein outside the body width direction of described flank section is provided with described magic tape, this magic tape comprises band substrate sheets and has the described set portion of multiple copulational protuberance in the side, outside in body width (X) direction of this band substrate sheets, this magic tape is rectangular shape in the deployed state, this set portion is fixed in the outside in body width (X) direction of this band substrate sheets be identically formed at the plan view shape with this magic tape.

＜17＞

As described in disposable diaper any one of < 1 > to < 16 >, wherein said absorbent main body has the rectangular shape of lengthwise, and be divided into the veutro being positioned at wearer when wearing veutro portion, be positioned at the drosal part of the dorsal part of wearer and be positioned at the crotch of crotch part of wearer.

＜18＞

As described in disposable diaper any one of < 1 > to < 17 >, wherein said back sheet comprises the leakage prevention sheet of liquid impermeability or the difficult permeability of liquid and is bonded on the composite sheet of outer non-woven fabrics of non-skin opposite face side of this leakage prevention sheet via outer bond layer.

＜19＞

As described in disposable diaper any one of < 1 > to < 18 >, be wherein formed with three-dimensional fold and leg creases.

Claims

1. a disposable diaper, comprising: the absorbent main body of lengthwise, its absorber having the positive dough sheet being configured in skin opposite face side, the back sheet being configured in non-skin opposite face side and be configured between this positive dough sheet and this back sheet; With the flank section of retractility, it is arranged on the both sides along principal length direction of this absorbent main body, the non-skin opposite face that described disposable diaper is bonded on described absorbent main body by the set portion of the magic tape of the leading section in the outside in the body width direction by being arranged on this flank section is worn, and the feature of described disposable diaper is:

Described flank section comprises: two flank section sheets; The multiple elastomeric elements extended in body width direction, it is fixed between these two flank section sheets; The main body side bond layer extended in principal length direction, the end side of the described absorbent main body side of the plurality of elastomeric element is fixed by it; With the front bond layer extended in principal length direction, the end side of the side, leading section of the described flank section of this elastomeric element is fixed, described flank section is fixed between described two flank section sheets by described main body side bond layer and described front bond layer by the described elastomeric element of elongation state to be formed

Described flank section has multiple middle fixed part extended in principal length direction, and the plurality of middle fixed part is configured between described main body side bond layer and described front bond layer, is fixed by described two flank section sheets,

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

Described plication region comprises low plication region and high plication region, and the height of described pleat is more than 0.5mm below 3mm in high plication region.

3. disposable diaper as claimed in claim 1, is characterized in that:

The adjacent described middle fixed part in body width direction each other between be interposed between described main body side bond layer side than short in bond layer side, described front,

4. disposable diaper as claimed in claim 2 or claim 3, is characterized in that:

The height of described pleat is more than 0.5mm below 3mm in described high plication region.

5. the disposable diaper according to any one of claim 2 ~ 4, is characterized in that:

The height of the described pleat of described low plication region is more than 0.1mm below 8mm.

6. the disposable diaper according to any one of claim 2 ~ 5, is characterized in that:

The absolute value of the difference in height of the pleat of described high plication region and described low plication region is more than 0.5mm below 5mm.

7. the disposable diaper according to any one of claim 1 ~ 6, is characterized in that:

The outside side edge part along principal length direction of described absorbent main body is partly bonded in the described plication region of described flank section when overlooking.

8. the disposable diaper according to any one of claim 1 ~ 7, is characterized in that:

The width of described main body side bond layer or described front bond layer is more than 1.5mm below 15mm.

9. the disposable diaper according to any one of claim 1 ~ 8, is characterized in that:

The width of described each middle fixed part is less than the width of any one in described main body side bond layer and described front bond layer, is more than 0.3mm below 1.5mm.

10. the disposable diaper according to any one of claim 1 ~ 9, is characterized in that:

The height of the concavo-convex thickness direction in described flank section of the pleat of described main body side bond layer and described front bond layer, is less than the concavo-convex height at equidirectional as the pleat in the zone line in the region between this main body side bond layer and this front bond layer.

11. disposable diapers according to any one of claim 1 ~ 10, is characterized in that:

The area (S2) of the overlapping region of under the naturalness that described flank section is shunk, described lateral plate and plication region is less than more than 1/8 2/3 relative to the ratio (S2/S1) of the gross area (S1) of the described plication region of this flank section.

12. disposable diapers according to any one of claim 1 ~ 11, is characterized in that:

Non-woven fabrics, fabric, film or their lamination sheets is used as described flank section sheet.

13. disposable diapers according to any one of claim 1 ~ 12, is characterized in that:

The lateral side along its length of described absorbent main body is the lateral side along its length of described lateral plate.

14. disposable diapers according to any one of claim 1 ~ 13, is characterized in that:

The end of the described absorbent main body side of described flank section is clipped by described lateral plate and described back sheet and is fixed on described absorbent main body, and the outside side edge part along principal length direction of this absorbent main body is the outside side edge part along its length of described lateral plate.

15. disposable diapers according to any one of claim 1 ~ 13, is characterized in that:

The end of the described absorbent main body side of described flank section is fixed in the non-skin abutment face side of described back sheet and described absorbent main body, and the outside side edge part along its length of this absorbent main body is the outside side edge part along its length of described back sheet.

16. disposable diapers according to any one of claim 1 ~ 15, is characterized in that:

Described lateral plate is made up of the sheet of the difficult permeability of 1 liquid, non-skin opposite face rollover folding from the both sides along its length of this sheet to this sheet and be formed as two-layer.

17. disposable diapers according to any one of claim 1 ~ 16, is characterized in that:

Leading section outside the body width direction of described flank section is provided with described magic tape, this magic tape comprises band substrate sheets and has the described set portion of multiple copulational protuberance in the outside in the body width direction of this band substrate sheets, and described magic tape is rectangular shape in the deployed state, this set portion is fixed in the outside in the body width direction of this band substrate sheets be identically formed at the plan view shape with this magic tape.

18. disposable diapers according to any one of claim 1 ~ 17, is characterized in that:

Described absorbent main body has the rectangular shape of lengthwise, and be divided into the veutro being positioned at wearer when wearing veutro portion, be positioned at the drosal part of the dorsal part of wearer and be positioned at the crotch of crotch part of wearer.

19. disposable diapers according to any one of claim 1 ~ 18, is characterized in that:

Described back sheet comprises the leakage prevention sheet of the difficult permeability of liquid impermeability or liquid and is bonded on the composite sheet of outer non-woven fabrics of non-skin opposite face side of this leakage prevention sheet via outer bond layer.

20. disposable diapers according to any one of claim 1 ~ 19, is characterized in that:

Be formed with three-dimensional fold and leg creases.