CN101541281A - Disposable diaper - Google Patents

Abstract

A disposable diaper in to to raise ventilation in a waistline part. In an underpants type disposable diaper, including: a ventral-side outer sheet 12F and a back-side outer sheet 12B which are not connected but separated at a crotch portion; an absorber 20 having a liquid impervious sheet and a crotch outer sheet 12M laminated on an underside of the liquid impervious sheet in the absorber so as to be exposed on an external surface of a product, assuming that the number of sheets disposed on the underside of the liquid impervious sheet is B1 at the intermediate portion 23, A1 at front- and back-side outer overlap sections X and Z, and C1 at the front- and back-side outer nonoverlap sections 20F and 20B, there is established a relationship of B1<C1<A1.

Description

Diaper

Technical field

The present invention relates to outer load and be divided into veutro and the two-part pants-type paper diaper of dorsal part.

Background technology

Common pants-type paper diaper has: outer load, and the both sides of its both sides by engaging predecessor part respectively and back body part and form the junction surface in both sides, and form waist opening portion and pair of right and left leg opening part; And absorbent main body, its width central authorities along the inner surface of outer load be fixed on from veutro by between crotch in the scope of dorsal part, pass waist opening portion and insert leg opening part and dress by the bipod that makes wearer.

Kind with respect to the outer load of this use one, proposed to be also referred to as the diaper of the type of being divided into two in recent years, this diaper is following formation: by outer load being divided into veutro and dorsal part two parts and making the outer load of veutro and the outer load side between crotch of dorsal part is left and discontinuous (for example with reference to patent documentation 1).In this type diaper that is divided into two, have following advantage: the leftover bits and pieces (unnecessary discarded part) during the stamping-out leg opening part is few during fabrication, and each raw material that can select outer load of veutro and the outer load of dorsal part separately.

On the other hand, the absorbent main body that is divided into two in the diaper of type has: the liquid permeability top flat that is provided in the surface; Be provided in the opaque liquid sheet of rear side; And be arranged on the absorption between them and keep the absorptive unit of liquid, the back side for absorbent main body, its leading section is connected with the width central part inner surface of the outer load of veutro, simultaneously, the width central part inner surface of the outer load of rearward end and dorsal part is connected, and the pars intermedia between these leading sections and the rearward end outside the veutro that is in side between crotch outside load and the dorsal part leaving partly of load expose to the outside.Under situation the about back side of opaque liquid sheet not being coated, the opaque liquid sheet exposes between the load outside load and the dorsal part outside veutro.Because the opaque liquid sheet is different with the outward appearance and the feel of outer load of veutro and the outer load of dorsal part, therefore in order to address this problem, preferably utilizes non-woven fabrics that the opaque liquid sheet is coated shown in patent documentation 1 like that.

Patent documentation 1: TOHKEMY 2005-027839 communique

But, compare with the pants-type paper diaper of the outer load that uses one, find that there is the low problem points of air permeability of waist portion in the existing type diaper that is divided into two.

Summary of the invention

Therefore, major subjects of the present invention is to improve the air permeability of waist portion.

The present invention who has solved above-mentioned problem is as described below.

The described invention of＜first aspect 〉

A kind of pants-type paper diaper, described pants-type paper diaper possesses:

The waist portion of tubular, the outer load of dorsal part of outer load of its veutro by the veutro in the waist that covers wearer and covering dorsal part constitutes, the waist portion of described tubular forms, and the junction surface of the width both sides of the edge of the junction surface of the width both sides of the edge of the outer load of veutro and the outer load of dorsal part engages and the outer load of veutro and the outer load side between crotch of dorsal part are left and discontinuous; And

Absorbent main body, its leading section is connected on the width central part inner surface of the outer load of described veutro, and the rearward end of this absorbent main body is connected on the width central part inner surface of the outer load of described dorsal part, pars intermedia between these leading sections and the rearward end outside the veutro that is in side between described crotch outside load and the dorsal part part of leaving of load expose to the outside, and this absorbent main body covers to veutro by portion between crotch from dorsal part, it is characterized in that

Described absorbent main body has: the liquid permeability top flat that is provided in the surface; Be provided in the opaque liquid sheet of rear side; And the absorptive unit that is arranged on the absorption maintenance liquid between liquid permeability top flat and the opaque liquid sheet,

Expose between the crotch of product outside the rear side that load outside the portion is layered in the described opaque liquid sheet in the described absorbent main body, the fore-and-aft direction scope that load spreads all over the position between the side edge between the crotch of the load outside the rear end of described absorbent main body and described dorsal part of the position between the side edge between the crotch of load outside the front end of described absorbent main body and described veutro outside the portion between this crotch is provided with

Described absorbent main body has with the lower part: be defined as the front side of the fore-and-aft direction scope of the front end of load outside adorning non-overlapped part outside the portion from the front end of described absorbent main body up between described crotch; Adorn lap outside the eclipsed front side of side end between the crotch of the outer load of the leading section of load and described veutro outside the portion between described crotch; Be defined as up between described crotch, adorning non-overlapped part outside the rear side of the fore-and-aft direction scope of the rear end of load outside the portion from the rear end of described absorbent main body; And between described crotch outside the portion between the crotch of the outer load of the rearward end of load and described dorsal part the eclipsed rear side of side end adorn lap outward,

Sheet number for the sheet of the rear side that is arranged on described opaque liquid sheet, sheet number in establishing described pars intermedia is B1, establish that to adorn the sheet number of adorning outside lap and the rear side in the lap outside the described front side be A1, establish when adorning the sheet number of adorning outside non-overlapped part and the rear side in the non-overlapped part outside the described front side and being C1, has the relation of B1＜C1＜A1.

(action effect)

For the reason that aeration reduces, initial and unclear.But, by repeating wholwe-hearted research, the result can be clear and definite: because the back side integral body of absorbent main body is all coated by non-woven fabrics, therefore all there is unnecessary non-woven fabrics in the lap integral body in waist portion and absorbent main body, and consequently the aeration of waist portion reduces.

The present invention finishes according to this opinion, it is characterized in that, in the fore-and-aft direction scope at the back side of absorbent main body, front part till from front end to the preset distance rear end side and load outside the portion is not set crotch from the rear section of rear end till the preset distance front, the mid portion between front part and rear section are provided with between crotch load outside the portion.By constituting by this way, load is in the shared ratio reduction of the lap of waist portion and absorbent main body outside the portion between crotch, and correspondingly, the aeration of waist portion improves.

And, under situation of the present invention, owing to load outside the portion between crotch reduces at the shared ratio of the lap of waist portion and absorbent main body, the aeration of waist portion is reduced, can load contains deodorizer to bring into play deodorization functions or to realize intensity raising etc. by the raw material of load outside the portion between suitable change crotch portion outside by making between crotch.

In addition, in the present invention, owing to adorn the thickness maximum that lap and rear side are adorned the externally mounted part in the lap outward outside the front side, so stiffness grow of the externally mounted part of this part, the power of the extensible member of both sides is transmitted easily, absorber is resisted against on the health securely, and fit uprises, be difficult to cause absorbent main body in the wearing about the position skew.And, in the present invention, adorning non-overlapped part and rear side outside the front side adorns the thickness of the externally mounted part in the non-overlapped part outward to adorn lap outward than dress lap and rear side outside the front side thin and thicker than pars intermedia, therefore adorning stiffness that non-overlapped part and rear side adorn non-overlapped part outward outside the front side can to adorn lap outward so not strong as adorning lap and rear side outside the front side, adorns non-overlapped part and rear side outside the front side and adorns the radian that non-overlapped part can be followed the build on abdominal part top and buttocks top outward.

The described invention of＜second aspect 〉

According to the described pants-type paper diaper of first aspect, wherein, basic weight for the sheet of the rear side that is arranged on described opaque liquid sheet, the basic weight of the sheet in establishing described pars intermedia is B2, establish that to adorn the basic weight of adorning the sheet in the lap outside lap and the rear side outside the described front side be A2, establish when adorning the basic weight of adorning the sheet in the non-overlapped part outside non-overlapped part and the rear side outside the described front side and being C2, has the relation of B2＜C2＜A2.

(action effect)

If the basic weight of sheet of rear side that is arranged on the opaque liquid sheet then can further be brought into play the effect of the invention described above in the scope that this aspect is put down in writing.

The described invention of＜third aspect 〉

According to first aspect or the described pants-type paper diaper of second aspect, wherein, described pants-type paper diaper constitutes: adorn the lap of the fore-and-aft direction in the lap and lap that described rear side is adorned the fore-and-aft direction in the lap outward outside the described front side and be respectively 10～90mm.

(action effect)

If the lap of load outside the portion, the outer load of dorsal part and the outer load of veutro then is particularly preferred in the scope that this aspect is put down in writing between crotch.

The described invention of＜fourth aspect 〉

According to first aspect to the described pants-type paper diaper of the either side in the third aspect, wherein,

Outer load of described veutro and/or the outer load of dorsal part have: main part, and it occupies identical above-below direction scope with described junction surface; And extension, its downside to this main part extends,

Adorning the lap of the fore-and-aft direction in the lap and/or lap that described rear side is adorned the fore-and-aft direction in the lap outward outside the described front side forms: short and 1/2 long than the fore-and-aft direction length of extension than the fore-and-aft direction length of the extension of each side of front side rear side.

(action effect)

Load has under the situation of extension outside load and/or the dorsal part outside veutro, the part of the both sides of the absorbent main body of extension becomes the part that covers buttocks or pars inguinalis, if therefore lap is in the scope that this aspect is put down in writing, then extension and the stiffness grow eclipsed part of absorbent main body, fit improves, and is preferred therefore.

The described invention in＜the five aspect 〉

To the described pants-type paper diaper of the either side in the fourth aspect, wherein, constitute between described crotch the rigidity height that the ratio of rigidity of the sheet of load outside the portion constitutes the sheet of outer load of described veutro and the outer load of dorsal part according to first aspect.

(action effect)

When as this aspect record, constituting, can strengthen the stiffness of the externally mounted part of the portion boundary periphery that part that outer load of dorsal part and the outer load of veutro be laminated and absorbent main body expose, so fit improves.

The described invention in＜the six aspect 〉

According to the described pants-type paper diaper of either side in first aspect to the five aspects, wherein, the described absorptive unit of ratio in described absorbent main body more leans on the position of rear side, at least the fore-and-aft direction scope that spreads all over the position of position in described pars intermedia in the described rearward end is fixed with the elastic telescopic parts with the state along the fore-and-aft direction elongation.

(action effect)

On the other hand, in the type that is divided into two diaper in the past, as shown in figure 20, also having posterior components is the problem that the summit is " く " word sigmoid and bloats towards the outside with the part shown in the arrow.The inventor repeats wholwe-hearted research by the reason to this buckling phenomenon, and the result has obtained following opinion.Promptly, in the type diaper that is divided into two, boundary between the part that part that load is laminated outside dorsal part and absorbent main body are exposed, rigidity change (latter is lower than the former rigidity), and therefore producing with this outer rim circle is the phenomenon that the summit is " く " word sigmoid.And can know that this buckling phenomenon more is easy to generate when wearer is seated.

By further studying, the result particularly in such the having between crotch outside the portion in the structure of load of the present invention, is easy to generate this buckling phenomenon as can be known.That is, in such the having between crotch outside the portion in the structure of load of the present invention, the part that changes of the superimposed sheets number of Zhuan sheet outside, the stiffness of outer dress changes, and therefore particularly is easy to generate buckling phenomenon in posterior components.

The invention that this aspect is put down in writing is finished with regard to being based on this opinion, especially, ratio absorptive unit in absorbent main body more leans on the position of rear side, at least the fore-and-aft direction scope that spreads all over the position of position in pars intermedia in the rearward end is fixed with the elastic telescopic parts with the state along the fore-and-aft direction elongation.By the elastic telescopic parts are set like this, the contractility of elastic telescopic parts spreads all over the scope of crossing over outer rim circle and plays a role, thereby this part is fit along body surface, therefore is difficult to produce such in the past buckling phenomenon.And then particularly in the present invention, the thickness of the externally mounted part of pars intermedia is the thinnest, so the contractility of elastic telescopic parts transmits easily, and absorber is resisted against on the health securely, and fit improves.

The described invention in＜the seven aspect 〉

According to the described pants-type paper diaper in the 6th aspect, wherein, described elastic telescopic parts are arranged between described opaque liquid sheet and described crotch outside the portion between the load.

(action effect)

When constituting with this aspect record such, can prevent above-mentioned buckling phenomenon, simultaneously, the elastic telescopic parts can not expose, and outward appearance is good, and makes also easily, is preferred therefore.

The described invention of＜the eight aspect 〉

According to the described pants-type paper diaper in the 6th aspect or the 7th aspect, wherein, width central authorities in described absorbent main body and width both sides are provided with elongate elastic telescopic parts abreast along fore-and-aft direction respectively, are used as described elastic telescopic parts.

(action effect)

When the elastic telescopic parts dispose according to the mode of the present invention record, spread all over whole width and can both prevent buckling phenomenon effectively, be preferred therefore.

The described invention in＜the nine aspect 〉

According to the described pants-type paper diaper of eight aspect, wherein, percentage elongation with 150%～220%, with the fixed interval of 10～100mm thickness to be arranged on width be the rubber covered wire of 470～1000dtex (dtex), is used as described elongate elastic telescopic parts.

(action effect)

Under the situation that elongate elastic telescopic parts is arranged on abreast width central authorities in the absorbent main body and width both sides along fore-and-aft direction respectively, if thickness, percentage elongation, interval with the record of this aspect are provided with, then bending prevents that performance is excellent especially.

The described invention in＜the ten aspect 〉

According to the described pants-type paper diaper of eight aspect or the 9th aspect, wherein, the percentage elongation of the described elongate elastic telescopic parts that are arranged on the width central part is than the described percentage elongation height that is arranged on the elongate elastic telescopic parts of width both sides.

(action effect)

If with such formation of this aspect record, then not only bending prevents excellent performance, particularly the fit with respect to buttocks also improves, and is preferred therefore.

＜the ten described invention on the one hand 〉

According to the described pants-type paper diaper of either side in ten aspects, the 6th aspect to the, wherein, described elastic telescopic parts are benchmark with the border of pars intermedia in the described absorbent main body and rearward end, extend 5～180mm and extend 5～180mm in the pars intermedia side in the rearward end side.

(action effect)

In the scope that is arranged on the record of this aspect, bending prevents that performance is excellent especially.

＜the ten two described invention in aspect 〉

According to first aspect to the ten described pants-type paper diaper of either side on the one hand, wherein, between described crotch outside the portion load form identical with described absorbent main body width.

(action effect)

If with such formation of this aspect record, then the outward appearance of portion becomes clean and tidy between crotch.

＜the ten three described invention in aspect 〉

According to first aspect to the ten described pants-type paper diaper of either side on the one hand, wherein, between described crotch outside the portion load form wideer than described absorbent main body.

(action effect)

If such formation with the record of this aspect, then between crotch outside the portion load expose in the width both sides of absorbent main body, therefore thereby the elastic telescopic component configuration can be improved the fit that enclose with respect to lower limb in this two side portions, perhaps can improve shank deodoriging properties on every side by making between crotch portion outside load integral body contain deodorizer.

＜the ten four described invention in aspect 〉

According to first aspect to the ten described pants-type paper diaper of either side on the one hand, wherein, between described crotch outside the portion load form narrower than described absorbent main body.

(action effect)

If such formation the with the record of this aspect then can suppress the cost of raw material lower, and the air permeability of portion also improves between crotch.

＜the ten five described invention in aspect 〉

According to the described pants-type paper diaper of either side in first aspect to the 14 aspects, wherein,, separate the predetermined load outside the portion that is interval with between the multi-disc crotch at described mid portion.

(action effect)

By being divided into a plurality of load outside the portion between crotch and separate configuration like this, can suppress the raw material use amount, and air permeability is improved, can in wider scope, cover the back side of absorbent main body.

＜the ten six described invention in aspect 〉

According to the described pants-type paper diaper in the 15 aspect, wherein, in described absorbent main body, do not have between described crotch an indicator that the part of load outside the portion is provided with the absorption that shows liquid at least.

(action effect)

If constituting with the such of this aspect record, then can be by there not being the demonstration of the part Visual Confirmation indicator of load portion outside between crotch, rather than pass through the demonstration of load Visual Confirmation indicator outside the portion between crotch, so Visual Confirmation is good.

The invention effect

As mentioned above, according to the present invention, can access the advantages such as aeration raising of waist portion.

Description of drawings

Fig. 1 is the plane graph that illustrates under the deployed condition of inner surface of embodiment.

Fig. 2 is the plane graph that illustrates under the deployed condition of outer surface of embodiment.

Fig. 3 is the cutaway view along the 3-3 line of Fig. 1.

Fig. 4 is the cutaway view along the 4-4 line of Fig. 1.

Fig. 5 is the front view of Product Status.

Fig. 6 is the rearview of Product Status.

Fig. 7 is the plane graph that illustrates under the deployed condition of outer surface of other embodiment.

Fig. 8 is the plane graph that illustrates under the deployed condition of outer surface of other embodiment.

Fig. 9 is the cutaway view along the 9-9 line of Fig. 8.

Figure 10 is the plane graph that illustrates under the deployed condition of outer surface of other embodiment.

Figure 11 is the plane graph that illustrates under the deployed condition of inner surface of embodiment.

Figure 12 is the plane graph that illustrates under the deployed condition of outer surface of embodiment.

Figure 13 is the cutaway view along the 3-3 line of Fig. 2.

Figure 14 is the cutaway view along the 4-4 line of Fig. 1.

Figure 15 is the front view of Product Status.

Figure 16 is the rearview of Product Status.

Figure 17 is the rearview that the Product Status of other embodiment is shown.

Figure 18 illustrates by the fixing sketch map of the method for elastic telescopic parts of welding.

Figure 19 illustrates by the fixing sketch map of the method for elastic telescopic parts of welding.

Figure 20 is a photo of taking the wearing state of existing diaper from the side.

Label declaration

20: absorbent main body; 12: outer load; 12F: the outer load of veutro; 12B: the outer load of dorsal part; 12M: load outside the portion between crotch; 13: main part; 14: extension; 15: the first elongate elastic telescopic parts; 16: the second elongate elastic telescopic parts; 25: elongate elastic telescopic parts.

The specific embodiment

Below, the present invention will be described in more detail for the embodiment shown in reference to the accompanying drawings.

＜the first embodiment 〉

Fig. 1～Fig. 6 illustrates an example of pants-type paper diaper involved in the present invention.In the label of Fig. 1, " fore-and-aft direction " means the direction that connects veutro and dorsal part, " width " means and the orthogonal direction of fore-and-aft direction, and " above-below direction " means with the orthogonal direction of waist direction, in other words for being connected the direction of portion's side between the WO of waist opening portion side and crotch.

This pants-type paper diaper 10 constitutes, have the outer load 12F of veutro of the veutro in the waist that covers wearer and the outer load 12B of dorsal part of covering dorsal part, and the junction surface 12A of the width both sides of the edge of the junction surface 12A of the width both sides of the edge of the outer load 12F of veutro and the outer load 12B of dorsal part engages the waist portion that forms tubular by heat-sealing or ultrasonic fusing etc., and the outer load 12B side between crotch of outer load 12F of veutro and dorsal part is left and discontinuous.This leaves distance Y and can form about 150～250mm.

Mode is such as shown, and load 12B, can be provided with integratedly in the above-below direction scope that comprises till this part and implement heat-sealing and wait the extension weld portion that processes more under the situation that downside extends than junction surface 12A outside dorsal part.By the extension weld portion is set, can prevent the pulling back of the second elongate elastic telescopic parts 16 of extension 14 described later.In this case, consider the damaged easness of sidepiece, usually junction surface 12A is made of the set of little weld portion, and in the 12A of junction surface, form the low junction figure of ratio of welding area, but owing to do not need to consider damaged easness in the extension weld portion, therefore, the ratio of welding area that also can be by making the welding figure that extends weld portion comes welding reliably to fix the second elongate elastic telescopic parts 16 than the height of junction surface 12A.And, extend the edge part that weld portion also can be utilized the crooked line welding buttocks cover 14C of portion, prevent the pulling back of the second elongate elastic telescopic parts 16 of the buttocks cover 14C of portion.

And, the back side of the leading section 21 of absorbent main body 20 is connected on the width central part inner surface of the outer load 12F of veutro in the waist portion, the back side of the rearward end 22 of absorbent main body 20 is connected on the width central part inner surface of the outer load 12B of dorsal part, and the pars intermedia 23 between these leading sections 21 and the rearward end 22 exposes to the outside via the part Y that leaves of outer load 12F of the veutro that is in side between crotch and the outer load 12B of dorsal part.

From Fig. 5 and Fig. 6 as can be known, the upper opening of waist portion becomes the WO of waist opening portion that the waist for wearer passes, the part of being surrounded by the lateral margin of the lower edge of waist portion and absorbent main body 20 respectively in the width both sides of absorbent main body 20 becomes the leg opening part LO that passes for shank.Each junction surface 12A is peeled off and unfolded state under, form hourglass shape as shown in Figure 1.Absorbent main body 20 is to catch Excreta and absorb the part that keeps liquid component to extend by the mode that portion between crotch covers veutro always from dorsal part, and waist portion is the part with respect to wearer supporting absorbent main body 20.

(waist portion)

As shown in Figure 4, outer load 12F of veutro and the outer load 12B of dorsal part form by pasting two sheet S1, S2 such as non-woven fabrics, and,, between two sheet S1, S2, be provided with elongate elastic telescopic parts 15,16 such as rubber covered wire with predetermined percentage elongation in order to improve fit with respect to waist portion.As non-woven fabrics, can use by PP, PP/PE, PP/PET etc. fibroplastic spunbond (spunbond) non-woven fabrics, melt and spray various non-woven fabrics such as (meltblown) non-woven fabrics, sticking (point bond) non-woven fabrics of point, hot blast (air through) non-woven fabrics, gas point (air point/ エ ア Port イ Application ト) non-woven fabrics, water thorn (spunlace) non-woven fabrics, SMS non-woven fabrics.

In more detail, the outer load 12B of dorsal part has: occupy the main part 13 of identical above-below direction scope with junction surface 12A; And the extension 14 that extends to the downside of this main part 13.Extension 14 has: with absorbent main body 20 eclipsed width central part 14M; And the buttocks cover 14C of portion that extends to the both sides of this width central part 14M.

The shape of extension 14 can suitably determine, in illustrated example, extend to the downside of main part 13 with the width identical with main part 13 upper end of extension 14, and its downside is along with near side narrowed width between crotch.The part identical with main part 13 width also can be omitted.If constitute by this way, then the edge 14e in the width of the 14C of the buttocks cover portion outside form along with near side between crotch near the linearity or the curve-like of absorbent main body 20 sides, form the shape that covers buttocks easily.The size of extension 14 can suitably determine, but more preferably the width length 14x of the 14C of buttocks cover portion (the edge 14e in the width outside of the buttocks cover 14C of portion and the maximum of lateral margin on width of absorbent main body 20 are left distance) is that the length 14y (development length) of the above-below direction of 80～160mm, the buttocks cover 14C of portion is 30～80mm.And, will be by when position the wideest on the width of extension 14 and the wideest position is determined on above-below direction tetragonal area are made as S, if the area of extension 14 is 20%～80%, particularly about 40%～60% with respect to S, then the outward appearance of buttocks and wearing sense are excellent, are preferred therefore.

Main part 13 can be divided into upper portion (waist) W and lower portion U at above-below direction conceptive, its scope is according to the size of product and difference, generally speaking, can make the above-below direction length of upper portion W be 15～80mm, make the above-below direction length of lower portion U is 35～220mm.

In upper portion (waist) W of main part 13, be fixed with many waist elasticity extensible members 17 to spread all over the whole successive mode of width, described many waist elasticity extensible members 17 are being fixed under the state of width elongation along the above-below direction devices spaced apart and with predetermined percentage elongation.And, about one or more the elastic telescopic parts 17 with the zone of the lower portion U adjacency of main part 13 of being provided in the waist elasticity extensible member 17, can be overlapping with absorber 20, also can except with absorbent main body 20 eclipsed width central parts be separately positioned on its width both sides.As this waist elasticity extensible member 17, preferably be 300～2000dtex, particularly (elastomeric situation about 400～1900dtex with thickness.Under the situation of natural rubber, sectional area is 0.1～1.5mm ², 0.1～1.0mm particularly ²About) rubber covered wire, with the interval of 4～12mm, respectively with 200%～400% percentage elongation, particularly fixing about 3～22 of about 220%～320% percentage elongation.And it is identical thickness and percentage elongation all that waist elasticity extensible member 17 does not need, and for example also can be that the thickness of elastic telescopic parts is different in the upper and lower of waist with percentage elongation.This waist elasticity extensible member 17 there is no magnitude relationship with respect to the first and second elongate elastic telescopic parts 15,16, can freely determine.

And, in the lower portion U of main part 13, except with absorbent main body 20 eclipsed width central parts, each position of side and width both sides thereon, be fixed with many first elongate elastic telescopic parts 15 to spread all over the whole successive mode of width, described many first elongate elastic telescopic parts 15 are being fixed under the state of width elongation along the above-below direction devices spaced apart and with predetermined percentage elongation.The above-below direction of the first elongate elastic telescopic parts 15 sets the part that scope can be a main part 13, but is preferably the integral body (to the scope of mass action contractility) of main part 13 in fact.

As the first elongate elastic telescopic parts 15, preferably be 300～1200dtex, particularly (elastomeric situation about 400～1000dtex with thickness.Under the situation of natural rubber, sectional area is 0.1～1.0mm ², 0.1～0.Smm particularly ²About) rubber covered wire, with the interval of 3～8mm, respectively with 150%～300% percentage elongation, particularly fixing about 5～30 of about 240%～300% percentage elongation.

And, in extension 14, except with absorbent main body 20 eclipsed width central parts, each position in its width both sides, be fixed with many second elongate elastic telescopic parts 16 to spread all over the successive mode of width integral body (spreading all over the buttocks cover 14C of portion integral body at least), described many second elongate elastic telescopic parts 16 are being fixed under the state of width elongation along the above-below direction devices spaced apart and with predetermined percentage elongation.The above-below direction of the second elongate elastic telescopic parts 16 sets the part that scope can be an extension 14, but is preferably the integral body (to the scope of mass action contractility) of extension 14 in fact.

As the second elongate elastic telescopic parts 16, preferably be 300～1200dtex, particularly (elastomeric situation about 400～1000dtex with thickness.Under the situation of natural rubber, sectional area is 0.1～1.0mm ², 0.1～0.8mm particularly ²About) rubber covered wire, with the interval of 3～8mm, respectively with fixing about 3～10 of the high percentage elongation of the percentage elongation of the first elongate elastic telescopic parts of the ratio in 240%～400%, particularly 280%～360% the scope.In addition, the second elongate elastic telescopic parts 16 preferably set, and make the percentage elongation height of the percentage elongation of the extensible member that is configured in the above-below direction both ends than the extensible member that is configured in pars intermedia.And it is identical with the first elongate elastic telescopic parts 15 that the thickness of the second elongate elastic telescopic parts 16 is preferably, but also can be thicker or thinner than the first elongate elastic telescopic parts 15 than the first elongate elastic telescopic parts 15.And, in waist elasticity extensible member 17 and elongate elastic telescopic parts 15,16, can use synthetic rubber, also can use natural rubber.

Like this, when the percentage elongation of the second elongate elastic telescopic parts 16 is higher than the percentage elongation of the first elongate elastic telescopic parts 15, such shown in the blank arrow among Fig. 6, the power towards oblique upper with respect to side and two junction surface 12A between the buttocks cover 14C of portion connection crotch produces more strongly with darker angle θ, therefore, the buttocks cover 14C of portion is difficult to produce and rolls or heave, and fit is good.Outside constituting outer load 12F of veutro and/or dorsal part during load 12B, by to non-woven fabrics S1, S2 the stretching on width regulate, make the warp tension ratio S1 of S2 big, the 14C of buttocks cover portion is inwards curling thus, the fit of buttocks further improves.

On the other hand, the outer load 12F of veutro is basic identical with the main part 13 of the outer load 12B of dorsal part, be along the waist direction extend rectangular-shaped, do not have the outer such extension 14 of load 12B of dorsal part.Therefore, use identical label, and omit explanation.For the outer load 12F of veutro, also can form identical with the outer load 12B of the dorsal part structure that constitutes by main part and extension.

On the other hand, as shown in the figure, except with absorbent main body 20 eclipsed width central parts be respectively arranged with in the mode of the first and second elongate elastic telescopic parts 15 and 16 in the width both sides of absorbent main body 20, except only existing the mode of elastic telescopic parts in the width both sides, also comprise following mode: cross absorbent main body 20 and have the elastic telescopic parts to opposite side from its width one side, but with absorbent main body 20 eclipsed width central parts, the elastic telescopic parts are cut off, thus contractility inoperative (be equal in fact the elastic telescopic parts are not set).And, in the present invention, also can spread all over mode that the width integral body of main part 13 and extension 14 all plays a role with contractility crosses absorbent main body 20 with the first and second elongate elastic telescopic parts 15,16 and is set to opposite side from its width one side.

Because the second elongate elastic telescopic parts 16 pass through the junction surface 12A welding of lateral margin on sheet S1, S2 unlike the first elongate elastic telescopic parts 15, therefore, particularly make its percentage elongation than the high situation of the percentage elongation of the first elongate elastic telescopic parts 15 under, expectation implements to prevent the processing of pulling back of the second elongate elastic telescopic parts 16.Therefore, for example can improve adhesive strength by bonding agent directly being coated on the second elongate elastic telescopic parts 16, if but the use amount of bonding agent is many, the probability that then has the sense of touch reduction of pars contractilis, therefore, as mentioned above, being provided with from the extended extension weld portion of junction surface 12A is one of preferred means.

And, aforesaidly constituting that the second elongate elastic telescopic parts 16 are being cut off with absorbent main body 20 eclipsed width central parts, in the inoperative mode of contractility, preferably also implementing the same processing of pulling back of preventing in the end of the width central part of the second elongate elastic telescopic parts 16.For example when welding is carried out in the end, the weld bond that utilizes linearity roughly with the second elongate elastic telescopic parts 16 and sheet S1, the S2 welding is fixing gets final product, described weld bond disposes to pass through the mode that disposes the many second elongate elastic telescopic parts 16 at width.

And, also can use the fixing means of the welding based on sheet described later separately or make up the adhesive strength that improves the second elongate elastic telescopic parts 16 and sheet S1, S2 with said method.

(absorbent main body)

Absorbent main body 20 can adopt shape arbitrarily, but is rectangle in illustrated mode.As shown in Figure 3, absorbent main body 20 is from using the face side to begin to have successively to make top flat 30 and the absorptive unit 50 that liquid sees through for example is made of non-woven fabrics etc.Generally, the rear side at absorptive unit 50 is provided with the opaque liquid sheet 70 that is made of plastic sheet etc.Be provided with between crotch load 12M outside the portion in the rear side of this opaque liquid sheet 70.And, promptly shift in order to make liquid to absorptive unit 50 through top flat 30, intermediate (second) 40 can be set between top flat 30 and absorptive unit 50.In addition, leak in the both sides of absorbent portion 20 in order to prevent Excreta, can be provided with in the both sides of absorbent portion 20 erect stop limit (barrier cuffs) 60,60.In addition, though diagram not, each component parts of absorbent main body 20 can interfix by whole (ベ ) coating, wire (PVC one De) coating or the spiral coating etc. of hot-melt adhesive etc.

Absorbent main body 20 can use machanical fastener or adhesives to be connected with outer load 12F of loading and unloading mode freely and veutro and/or the outer load 12B of dorsal part.

(top flat)

Top flat 30 has the character that liquid is seen through.Therefore, the raw material of top flat 30 is so long as present the material of this liquid permeability and get final product, and the non-woven fabrics, porous plastic sheet of porose or atresia etc. for example can example be shown.And wherein the raw fibre of non-woven fabrics is what there is no particular restriction.Olefines such as polyethylene or polypropylene, polyesters, natural fibers such as synthetic fibers, staple fibre or CUP regenerated fibers such as (cupra), cotton such as polyamide-based etc. for example, can example be shown or use two or more composite fibre that form among them, composite fibre etc.In addition, non-woven fabrics can be the non-woven fabrics of making by any processing.As processing method, water thorn (spunlace) method, spunbond (spunbond) method, hot rolling (thermalbond) method for example can example be shown, melts and sprays known method such as (meltblown) method, acupuncture (needle-punched) method, hot blast (air through) method, sticking (point bond) method of point.If for example seek flexibility, drapability, then preferred spunbonded method, water acupuncture manipulation, volume is big, flexibility if seek, then preferred hot blast method, the sticking method of point, hot rolling method.

And top flat 30 can be made of a sheet, also can be by constituting by pasting plural lamination sheets that obtains.Equally, top flat 30 can be made of a sheet about in-plane, also can constitute by plural.

(intermediate)

Promptly shift to absorber in order to make through the liquid behind the top flat 30, the penetration speed that liquid can be set is than top flat 30 intermediates 40 fast, that be commonly called " second ".This intermediate 40 not only can make liquid promptly shift and improve absorbent properties based on absorber to absorber, and the liquid that can prevent from the to be absorbed phenomenon of " refunding " from absorber, can make to be in dry status on the top flat 30 all the time.Intermediate 40 also can omit.

As intermediate 40, can example illustrate raw material, spun-laced nonwoven fabric, paper pulp non-woven fabrics, paper pulp and the staple fibre identical with top flat 30 mixing tab, put bonded non-woven fabrics or crepe paper.Preferred especially hot-wind nonwoven cloth and spun-bonded non-woven fabrics.

The intermediate 40 of illustrated mode is narrower and be configured in central authorities than the width of absorber 56, is provided with but also can spread all over whole width.The length direction length of intermediate 40 can be identical with the length of absorber 56, also can be in the short length range that with the reception region of fluid is the center.The representational raw material of intermediate 40 is non-woven fabrics of the permeability excellence of liquid.

(opaque liquid sheet)

Opaque liquid sheet 70 means the sheet of the rear side that only is configured in absorber 56, in the present embodiment for and top flat 30 between clamp the sheet of absorber 56.Therefore, the raw material of this opaque liquid sheet there is no particular restriction.Particularly, thereby the stacked non-woven fabrics that forms on olefine kind resins such as nonwoven layer being stacked in polyethylene or polypropylene or the polythene strip etc. for example can example be shown, clamp waterproofing membrane and guaranteed the non-woven fabrics of opaque liquid (in this case, utilizing waterproofing membrane and non-woven fabrics to constitute the opaque liquid sheet) etc. in fact.Certainly, in addition, can also the preferred raw material with opaque liquid and poisture-penetrability that uses from preventing vexed wet viewpoint in recent years be shown example.Have opaque liquid and poisture-penetrability raw-material as this, for example can the little porous sheet that obtain by following method be shown example: after mixing inorganic filler forms sheet in olefin resins such as polyethylene or polypropylene, by obtaining along single shaft or biaxially oriented stretching.In addition, can also use following material as opaque liquid sheet 70: the non-woven fabrics that uses fento degree (micro denier) fiber to form; And by applying the sheet of the opaque liquid that does not use waterproofing membrane that method that heat or pressure dwindles the anti-leakage intensifying method in space of fiber or coating super absorbent resin or hydrophobic resin and waterproofing agent forms.

Opaque liquid sheet 70 extends (not shown) with so-called crimping form on use face, can prevent the transverse leakage of liquid thus, but, in embodiment, prevent transverse leakage by the second opaque liquid sheet 72 being installed between the barrier sheet 64 that forms the bilayer that stops limit 60.According to this mode, the second opaque liquid sheet 72 extends till stopping that limit 60 erects, and therefore has following advantage: can prevent along the liquid of top flat 30 horizontal proliferation or stop soft stool transverse leakage between the limit 60,60.

And, also can on the inner surface of opaque liquid sheet or outer surface, implement by printing and the painted pattern that forms.In addition, also can the outside of opaque liquid sheet paste with crotch between the enforcement that is different parts of the outer load of portion print or painted pattern segments.And, also can have by visible change and show the indicator of urinating in the inboard of opaque liquid sheet.

(stopping the limit)

Be arranged on product both sides stop limit the 60, the 60th, in order to stop along top flat 30 tops to the urine or the soft stool that laterally move and to prevent transverse leakage setting, be additional unit.

The illustrated limit 60 that stops is made bilayer with barrier sheets such as water proofing property non-woven fabrics 64 and is formed, and covers the part that folds into to the below of top flat 30 from rear side of absorptive unit 50, and forms to face side outstanding.In order to stop along top flat 30 tops the urine that moves to laterally, stop in formation between the barrier sheet 64 of bilayer on limit 60 to have clamped the second opaque liquid sheet 72.Though diagram can not inserted the sidepiece of opaque liquid sheet 70 between double-deck barrier sheet 64 yet, and it is extended to what face side was given prominence to stop limit 60 midway.

And, the shape that stops limit 60 self can suitably design, and in illustrated example, is fixed with elastic telescopic parts, for example rubber covered wire 62 at the leading section and the pars intermedia of the protuberance that stops limit 60 with elongation state, in user mode, stop that limit 60 is by the contractility of these elastic telescopic parts and erect.The rubber covered wire 62 of pars intermedia more leans on the mode of the position of center side to be fixed on the end, front and back of top flat 30 with the rubber covered wire 62,62 that is positioned at than leading section, therewith relatedly, as shown in Figure 3, become following form: the base portion side that stops limit 60 erects obliquely towards center side, and compare with pars intermedia, leading section inclination outwardly tiltedly erects.

(absorptive unit)

Absorptive unit 50 has: absorber 56; And the back side at least and the lateral covering piece 58 that coat this absorber 56.Covering piece 58 also can omit.In addition, in diagramatic way, between the rear side position of absorber 56 and covering piece 58 (part of downside), be provided with retention tab 80, but this retention tab 80 can be omitted also.

(absorber)

Absorber 56 also can use by long filament 52,52 except continuous official form for filing a lawsuit slurry etc. amasss the parts that fibre forms short fiber ... the parts that constitute of aggregation etc.

Long filament 52,52 ... aggregation can obtain by tow (fibre bundle) is opened fibre.As the fiber that constitutes tow, for example can use polysaccharide or its derivant (cellulose, cellulose esters, chitin, chitosan etc.), synthetic high polymer (polyethylene, polypropylene, polyamide, polyester, poly-lactamide, polyvinyl acetate etc.) etc., especially, be preferably cellulose esters and cellulose.

As cellulose, can use the cellulose of plant-derived bodies such as silk floss, velveteen (linter), wood pulp or Bacterial cellulose etc., also can be regenerated celluloses such as staple fibre, regenerated cellulose also can be the fiber that spinning forms.

As the cellulose esters that can be suitable for adopting, for example can use: organic acid esters such as cellulose acetate, cellulose butyrate, cellulose propionate; Nitration mixture esters such as acetate-cellulose propionate, cellulose acetate butyrate, cellulose acetate phthalate, nitroacetyl cellulose; And cellulose esters derivant such as polycaprolactone grafted cellulose ester etc.These cellulose esters can separately or mix two or more the use.The viscosity average polymerization degree of cellulose esters is 50～900 for example, is preferably about 200～800.The average substitution degree of cellulose esters for example is 1.5～3.0 about (for example 2～3).

The average degree of polymerization of cellulose esters is 10～1000 for example, is preferably 50～900, is more preferably about 200～800, and the average substitution degree of cellulose esters is about 1～3 for example, is preferably 1～2.15, is more preferably about 1.1～2.0.The average substitution degree of cellulose esters can be selected from improving viewpoints such as Biodegradable.

Be preferably organic acid esters (for example carbon number is about 2～4 organic acid ester), be preferably cellulose acetate especially as cellulose esters.The most situation of the degree of acetylation of cellulose acetate is about 43%～62%, and in particular for 30%～50% o'clock, Biodegradable was also excellent, is preferred therefore.Particularly preferred cellulose esters is a cellulose diacetate.

The fiber that constitutes tow also can contain various additives, for example heat stabilizer, coloring agent, oil preparation, yield rate improving agent, whiteness improving agent etc.

The fineness that constitutes the fiber of tow is 1～16 danier for example, is preferably 1～10 danier, is more preferably 1～6 danier.The fiber that constitutes tow can be a uncrimped fibers, but is preferably crimped fibre.The crimpness of crimped fibre for example is 5～75 of per inch, is preferably 10～50, is more preferably about 15～50.And, use the crimped fibre that curls equably under the situation mostly.If the use crimped fibre then can be made the absorber of the big and light weight of volume, simultaneously, can easily make the high tow of integraty by being interweaved between the fiber.The cross sectional shape that constitutes the fiber of tow there is no particular determination, for example can be any of circle, ellipse, abnormity (for example Y word shape, X word shape, I word shape, R word shape etc.) or hollow form etc.The fiber that constitutes tow for example can with by 1000～1000000 of boundlings, the form that is preferably the tow (fibre bundle) that the ultimate fibre about 2000～1000000 forms uses.Fibre bundle is preferably the continuous fiber of about 1000～1000000 of boundlings and constitutes.

The bundle of tow that is suitable for the cellulose diacetate that uses in the present invention is by sale such as Celanese company and Daicel chemical industrial companies.The density of the bundle of the tow of cellulose diacetate is approximately 0.5g/cm ³, gross weight is 400～600kg.Tow is peeled from this bundle, so that its mode that becomes size, the volume of expectation is opened the fine wide band shape that becomes.The fine width of opening of tow is arbitrarily, for example width can be for 50～2000mm, be preferably the width of absorber of product promptly about 50～300mm.And,, can regulate the density of absorber by the fine degree of opening of tow is regulated.

As shown in Figure 3, preferably make and contain superabsorbent polymer particle 54,54 in the absorber 56 ...And in the liquid receiving area, superabsorbent polymer particle (SAP particle) is with respect to long filament 52,52 at least in expectation ... aggregation be dispersed in fact on the whole thickness direction.The major part enlarged drawing of Fig. 3 schematically illustrates the state that this is dispersed in whole thickness direction in fact.

Even do not have the SAP particle or can not say so " being dispersed on the whole thickness direction " arranged also under seldom the situation at top, bottom and the pars intermedia of absorber 56.Therefore, so-called " being dispersed on the whole thickness direction ", except the aggregation " equably " with respect to long filament is dispersed in the mode of whole thickness direction, also comprise " though existing partially " in top, bottom and/or pars intermedia, still be scattered in the mode of the each several part of top, bottom and pars intermedia.And do not get rid of following manner: the SAP particle of a part does not enter long filament 52,52 ... aggregation in but remain in its surperficial mode; Pass long filament 52,52 with the SAP particle of a part ... aggregation and be positioned at the mode on the covering piece 58 or be positioned at mode on the retention tab 80.

(superabsorbent polymer particle)

So-called superabsorbent polymer particle 54 also comprises except " particle " " powder body ".The particle diameter of superabsorbent polymer particle 54 can directly use the particle diameter that uses in this absorbent commodity, but expectation is below the 1000 μ m, particularly 150～400 μ m.As the material of superabsorbent polymer particle 54, can not have particular determination ground and use, but be preferably the material of water absorption more than 40g/g.As superabsorbent polymer particle 54, have starch based, cellulose family and synthetic polymer class etc., can use superabsorbent polymer particles such as saponified, the Sodium Tvlose cross-linking agent of starch-acrylic acid (salt) graft copolymer, starch-acrylonitrile graft copolymer and acrylic acid (salt) polymer.As the shape of superabsorbent polymer particle 54, be preferably normally used powder body shape, but also can use other shape.

As superabsorbent polymer particle 54, preferably using absorption speed is superabsorbent polymer particle below 40 seconds.If absorption speed surpasses 40 seconds, then be easy to generate the what is called that the liquid that are supplied in the absorber 56 return absorber 56 outsides and refund.

And,, preferably use gel strength to be the superabsorbent polymer particle more than the 1000Pa as superabsorbent polymer particle 54.Thus, even under the situation that forms bulky absorber 56, also can suppress to absorb the sense of being clamminess behind the liquid effectively.

The weight of the superabsorbent polymer particle 54 on the unit are can suitably be determined according to the desired absorbtivity of the purposes of this absorber 56.Therefore cannot treat different things as the same, can be 50～350g/m ²By the weight that makes polymer on the unit are is 50g/m ²Below, according to the weight of polymer, can prevent owing to adopting synthetic continuous fiber to be difficult to bring into play the situation of lightweight effect.If surpass 350g/m ², then not only effect is saturated, and because the sense of discomfort that superabsorbent polymer particle 54 surpluses can be given swishing sound swishing sound (ジ ヤ リ ジ ヤ リ).

If desired, then can regulate the distribution density or the dispersion volume of superabsorbent polymer particle 54 on the in-plane of absorber 56.For example, can make the dispersion volume of drain site of liquid more than the dispersion volume at other position.Under the situation of considering difference between male, improve the distribution density (amount) of front side for men's diaper, improve the distribution density (amount) of central part for lady's diaper.And, also can on the in-plane of absorber 56, (for example be point-like) partly the part that does not have polymer is set.

As required, as superabsorbent polymer particle 54, can prepare the different superabsorbent polymer particle of a plurality of particle size distribution, and supply with successively along thickness direction, make the little downside of superabsorbent polymer distribution of particles in absorber 56 of particle size distribution, make the big superabsorbent polymer distribution of particles of particle size distribution at upside.

About the ratio of superabsorbent polymer particle 54 and continuous fiber absorption characteristic.As the weight ratio in the area of plane of the 5cm * 5cm in the direct reception region of fluid in the absorber 56, particle/continuous fiber weight is 1～14, particularly 2～9 to the expectation superabsorbent polymer.

(covering piece)

Using under the situation of covering piece 58, can use tissue paper (tissue paper), particularly crepe paper, non-woven fabrics, polyethylene lamination (Port リ ラ ミ) non-woven fabrics, have the sheet of aperture etc. as the raw material of this covering piece 58.But, be contemplated to be the sheet that the superabsorbent polymer particle can not be deviate from.Using non-woven fabrics to replace under the situation of crepe paper, SMMS (spunbond/as to melt and spray/meltblown/spunbonded) non-woven fabrics of special preferred hydrophilic, its material can be used polypropylene, polyethylene/polypropylene etc.The weight of polymer is 5～40g/m on the expectation unit are ², 10～30g/m particularly ²

For this covering piece 58, as shown in Figure 3, except coating continuous fiber 52,52 ... aggregation and superabsorbent polymer particle 54,54 ... outside the mode of layer integral body, also can only coat the back side and the side of this layer.And, though diagram not can be a following manner also: utilize crepe paper or non-woven fabrics only to cover the upper surface and the side of absorber 56 and utilize opaque liquid sheet such as polyethylene to cover the mode of lower surfaces; And (these each raw materials become the formation unit of covering piece) such as modes that cover the upper surface of absorber 56 and utilize opaque liquid sheet such as polyethylene to cover side and lower surface with crepe paper or non-woven fabrics.If desired, also can be that two synusia clip continuous fiber 52,52 about utilizing ... aggregation and superabsorbent polymer particle 54,54 ... the layer mode or with continuous fiber 52,52 ... aggregation and superabsorbent polymer particle 54,54 ... layer only be configured in the mode of lower surface, but, therefore not the mode of expectation owing to be difficult to prevent moving of superabsorbent polymer particle.

(retention tab)

Under the situation that retention tab 80 is set, superabsorbent polymer particle 54 is installed between retention tab 80 and the absorber 56 by scattering to wait.Sometimes when aggregation is supplied with continuous fiber 52 or in subsequently the operation or the process of circulation before consumer uses, superabsorbent polymer particle 54 is passed the aggregation of continuous fiber 52.Can give swishing sound swishing sound sense of discomfort during the superabsorbent polymer population when consumer uses after touching the aggregation that passes continuous fiber concavo-convex with hands.Therefore, will have the mode that the retention tab 80 of the maintenance performance of superabsorbent polymer particle 54 is installed between absorber 56 and the covering piece 58 is preferred mode.80 pairs of this retention tabs only can produce insufficient stiffnesses (コ シ) by tissue paper covering pieces such as (crepe papers) 58 to be strengthened, and alleviates or the sense of discomfort when touching with hands when preventing that consumer from using.

The raw material of retention tab 80 there is no particular determination, gets final product so long as have the raw material of the maintenance performance of superabsorbent polymer particle 54.Particularly, for example can example non-woven fabrics be shown, the paper pulp that curls, low absorbefacient cotton fiber (cotton fiber that for example unskimmed cotton fiber, defat form, the fiber that utilizes waterproofing agent or water-repelling agent that staple fibre is handled to form etc.), polyethylene fibre, polyester fiber, tacryl, polypropylene fibre, thin,tough silk, cotton, fiber crops, nylon, polyurethane, acetate fiber etc.

In retention tab 80 is under the situation of non-woven fabrics, and this retention tab 80 can be following non-woven fabrics: the compression energy based on the KES test is 0.01～10.00gfcm/cm ², be preferably 0.01～1.00gfcm/cm ², and compression recovery performance is 10%～100%, is preferably 70%～100% non-woven fabrics.

Such as previously mentioned, the reason that retention tab 80 is set is for example to keep from come off towards the below superabsorbent polymer particle 54 of (disengaging) of absorber 56.Therefore, because the superabsorbent polymer particle 54 that breaks away from contacts with user with retention tab 80 across covering piece 58, therefore swishing sound swishing sound sense of discomfort can not be passed to user.Especially, if the non-woven fabrics of above-mentioned compression energy and compression recovery performance then can be brought into play its function fully.

And the superabsorbent polymer particle 54 of disengaging is kept by retention tab 80, and can not move on covering piece 58, therefore can not produce the inhomogeneous of absorbability.Especially, on retention tab 80, move in order to prevent superabsorbent polymer particle 54, can be in advance on retention tab 80 coating have adhering hot-melt adhesive etc.And, also can prevent that superabsorbent polymer particle 54 from moving on retention tab 80 by the upper surface (towards the face of the face of use side) of retention tab 80 is made matsurface.As matsurfaceization with this end in view or nappy means, can enumerate and when making non-woven fabrics, form non-netted of not being netted, carry out striped (marble) processing, process, carry out brushing (brushing) processing etc. by acupuncture.

Retention tab 80 can only be arranged on the below of absorber 56 as shown in Figure 3, and though diagram not, side that also can be by absorber 56 and the upper surface that is rolled up to absorber 56 extend.And, also can overlapping multi-disc retention tab 80 use.

Above-mentioned example is that retention tab 58 is arranged on example between the rear side position of absorber 56 and covering piece 58, but retention tab also can be positioned at the position (this mode is diagram not) of more leaning on rear side than covering piece, in a word, as long as with respect to absorber 56 overleaf side retention tab is set, just can alleviate or swishing sound swishing sound the sense of discomfort can not produce from the touch of the back side of product the time.

(between crotch outside the portion load)

Be provided with in the rear side of absorbent main body 20 and expose between the crotch of product outside load 12M outside the portion.Raw material as load 12M outside the portion between this crotch, can use and outer load 12F of veutro and the outer same raw material of load 12B of dorsal part, but also can use more high-intensity raw material or contain the raw material etc. and outer load 12F of veutro and the outer different raw material of load 12B of dorsal part of deodorizer.Particularly, can use various non-woven fabrics such as the spun-bonded non-woven fabrics that constitutes by fibers such as PP, PP/PE, PP/PET, melt spraying non-woven fabrics, some bonded non-woven fabrics, hot-wind nonwoven cloth, gas point non-woven fabrics, spun-laced nonwoven fabric, SMS non-woven fabrics, perhaps in these non-woven fabrics, add the material that deodorizer etc. forms.

Particularly preferred combination is following combination: with the outer surface lateral plate S1 among outer load 12F of veutro and the outer load 12B of dorsal part form SMS non-woven fabrics etc. have S layer and M shell stacked non-woven fabrics, inner surface lateral plate S2 is formed the spun-bonded non-woven fabrics of PP/PE, load 12M outside the portion between crotch is formed the spun-bonded non-woven fabrics of PP/PE.

When being seated, can apply high body pressure to load 12M outside the portion between crotch.Therefore, preferably has the raw material of the characteristic of abrasion resistance height (phozy), the particularly preferred raw material that in following abrasion resistance test, obtains the evaluation of " ◎ " or " zero " that uses.

(abrasion resistance test)

Abrasion resistance utilizes following method to measure according to JIS L 0849.That is, make the abrasion resistance mensuration sheet of 250mm * 25mm, and mensuration is measured with the abrasion resistance of the outer surface side (the outer surface side of absorbent main body) of sheet.In the mensuration of abrasion resistance, can use for example COLORFASTNESS RUBBING TESTER (TESTER Industry Co., Ltd makes, the AB-301 type).Use frictional testing machine II type to apply that 50 vibrations carry out during mensuration.Utilize the visual mensuration that the result of test is obtained to compare, at { ◎: not balling-up (ょ れ jade), phozy with sheet and limit sample; Zero: not balling-up but the fluffing; △: balling-up and fluffing; *: non-woven fabrics fracture } this four-stage estimates.

Between crotch outside the portion load 12M carried out printing or painted and have a sheet of pattern unit.Under situation about using simultaneously with above-mentioned pattern segments, preferably be configured in the nonoverlapping mode of pattern separately.

If the flexible non-woven fabrics of use is as load 12M outside the portion between crotch and its elongated lengthwise along absorbent main body 20 is pasted, then the fit of portion improves between crotch, is preferred therefore.

At absorber 56 is that the weight of the fiber on the unit are is at 100g/m ²Below and the weight of the superabsorbent polymer on the unit are at 100g/m ²Under the situation of above ultrathin absorber, absorber 56 does not have stiffness, therefore need portion strengthen stiffness between crotch, can not reduce so that dress easness.On the other hand, not too need stiffness at the abdominal part and the back side.Therefore, use at absorber 56 under the situation of common absorber from needless to say, in the mode of using this absorber that does not have a stiffness, particularly preferably in using the high sheet of rigidity (stiffness) among the load 12M outside the portion between crotch.And,, also can prevent buckling phenomenon in the past by constituting by this way.Particularly, can between crotch, use among the load 12M outside the portion bending resistance degree measured by Clarke method of testing (JISL 1096C method) MD (vertically) direction of sheet and CD (laterally) direction and as 100mm more than, be preferably the sheet more than the 150mm, outside formation veutro and dorsal part, use respectively among sheet S1, the S2 of load 12F, 12B the bending resistance degree MD direction and CD direction and as 100mm below, the sheet below the 80mm particularly.

In illustrated example, outside veutro and dorsal part in load 12F, 12B and the absorbent main body 20 eclipsed parts, between crotch outside the portion load 12M be clipped between absorbent main body 20 and veutro and dorsal part outer load 12F, the 12B, but also can stick on the outside of outer load 12F, 12B of veutro and dorsal part.For the latter's form, be preferred in mode shown in Figure 7 described later, in addition, when elastomeric element being configured between crotch outside the portion both sides of load 12M, be particularly preferred.Between crotch outside the portion load 12M stick on the inner surface or outer surface of the back side of absorbent main body 20 and veutro and dorsal part outer load 12F, 12B by hot-melt adhesive etc.

With regard to feature, the fore-and-aft direction scope as the back side of absorbent main body 20 has with the lower part: from front end to adorn non-overlapped part 20F than the more forward distolateral precalculated position of side edge the crotch of load 12F outside the veutro outer; Outside this, adorn the outer dress lap X of side edge the crotch of side edge load 12F outside veutro between the crotch of non-overlapped part 20F; Pars intermedia 23; From the rear end to more adorning non-overlapped part 20B by the precalculated position of rear end side outer than side edge the crotch of load 12F outside the veutro; And the outer dress lap Z that outside this, adorns side edge the crotch of side edge load 12B outside dorsal part between the crotch of non-overlapped part 20B, with load 12M outside the portion between crotch only be arranged on outer dress lap X from the front side through pars intermedia 23 up to the scope 20M of the outer dress lap Z of rear side.In illustrated example, from the outer dress lap X of front side through pars intermedia 23 outer load 12M coating of portion between the integral body of the scope 20M of the outer dress lap Z of rear side is all by crotch, but can judge from mode shown in Figure 10 described later, also can not coated the part by outer load 12M.

And, sheet number for the sheet of the rear side that is arranged on opaque liquid sheet 70 (in the present embodiment for load 12M outside the portion between formation sheet S1, the S2 of outer load 12F, 12B and crotch formation sheet), sheet number in establishing pars intermedia 23 is B1, establish that to adorn the sheet number of adorning outside lap X and the rear side among the lap Z outside the front side be A1, establish when adorning the sheet number of adorning outside non-overlapped part 20F and the rear side among the non-overlapped part 20B outside the front side and being C1, has the relation of B1＜C1＜A1.As long as satisfy this relation, then each sheet number and indefinite, preferred B1 is more than 0, is preferably 1 especially, preferred A1 is more than 2 with the difference of B1, preferably A1 on be limited to 5.One of particularly preferred combination is that B1 is that 1, C1 are that 2, A1 are 3.Can make the superimposed sheets number of front side and rear side identical, also can make their differences.In addition, do not comprise post processing band that parts, for example area that aeration and rigidity to each several part do not exert an influence are little etc. in these sheet numbers.

By such formation, load 12M is in the shared ratio reduction of the lap of waist portion and absorbent main body 20 outside the portion between crotch, and correspondingly, the aeration of waist portion improves.And, do not reduce the aeration of waist portion, contain deodorizer between crotch outside the portion among the load 12M and bring into play deodorization functions or, can realize intensity raising etc. by making by the suitable raw material of load 12M outside the portion between the change crotch.

The fore-and-aft direction length of each several part can suitably be determined.Especially, between crotch outside the portion between the crotch of the outer load 12F of the leading section of load 12M and veutro between the fore-and-aft direction length of the overlapping outer dress lap X that forms of side end and crotch the rearward end of the outer load 12M of portion and dorsal part outward between the crotch of load 12B the fore-and-aft direction length of the overlapping outer dress lap Z that forms of side end for example can be respectively 0～100mm, be more preferably 10～80mm, be preferably 20～60mm especially.And, load 12B takes under the situation of the structure that is made of main part and extension outside load 12F and/or the dorsal part outside veutro, preferred outer dress lap X and/or the fore-and-aft direction length of adorning lap Z outward form shorter than the fore-and-aft direction length of the extension of each side of veutro dorsal part (front side rear side), and 1/2 long than the fore-and-aft direction length of extension.If these laps are excessive, then be difficult to prevent the reduction of the aeration of waist portion.If these laps are too small, the stiffness that can't obtain expecting then.But, also can make between crotch between the lower end of the front end of load 12M and the outer load 12F of veutro outside the portion and between crotch portion outside the rear end of load 12M and dorsal part leave between the lower end of load 12B outward.

And, basic weight (Mi Ping) for the sheet of the rear side that is arranged on the opaque liquid sheet, the basic weight of the sheet in establishing pars intermedia 23 is B2, establish that to adorn the basic weight of adorning the sheet among the lap Z outside lap X and the rear side outside the front side be A2, establish when adorning the basic weight of adorning the sheet among the non-overlapped part 20B outside non-overlapped part 20F and the rear side outside the front side and being C2, especially preferably has the relation of B2＜C2＜A2.As long as satisfy this relation, then each basic weight and indefinite, preferred B2 is 0～25g/m ², C2 is 10～50g/m ², A2 is 15～75g/m ²

On the other hand, in the example of Fig. 1～shown in Figure 6, between crotch outside the portion load 12M form identical with absorbent main body 20 width, in other words, between crotch outside the portion both sides of the edge of load 12M (width two ends) aim at the both sides of the edge (width two ends) of absorbent main body 20.If constitute like this, then the predetermined fore-and-aft direction scope 20M at absorbent main body 20 back sides spreads all over whole width by load 12M covering portion between crotch outside, between crotch outside the portion load 12M do not expose from absorbent main body 20, so the appearance of portion is clean and tidy between crotch.

But, between crotch of the present invention outside the portion width of load 12M be not limited to this.For example, also can be as shown in Figure 7, it is wideer than absorbent main body 20 that whole (they also can be parts) of the fore-and-aft direction of load 12M outside the portion between crotch are formed width.Though between crotch outside the portion width of load 12M can suitably determine than absorbent main body 20 wide much degree, for example can form the wide 10～60mm of going out (one-sided about 5～30mm).If constitute like this, owing to load 12M outside the portion between crotch exposes in the width both sides of absorbent main body 20, therefore can be with the elastic telescopic component configuration in the part of these both sides to improve the fit that enclose with respect to lower limb, perhaps can contain deodorizer between crotch portion outside among the load 12M and improve shank deodoriging properties on every side by making.

On the contrary, as Fig. 8 and shown in Figure 9, it is narrower than absorbent main body 20 whole (also can be parts) of the fore-and-aft direction of load 12M outside the portion between crotch can be formed width.Though between crotch outside the portion width of load 12M can suitably determine than absorbent main body 20 narrow much degree, can form about for example narrow 10～60mm.In this case, can suppress the cost of raw material lower, and can improve the aeration of portion between crotch.

In addition, if make between crotch outside the portion width of load 12M narrower than absorbent main body 20, then because structure, the back side of absorbent main body 20 between crotch outside the portion width both sides of load 12M expose, but, in the present embodiment, constitute stop limit 60 barrier sheet 64 always around going into to the width both sides at the back side of absorbent main body 20 and by stickups such as hot-melt adhesives, between crotch outside the portion width both ends of load 12M overlapping with each end of the barrier sheet 64 of the width both sides that extend to absorbent main body 20 back sides with the lap W of predetermined width, so the back side of absorbent main body 20 can be between crotch outside the portion width both sides of load 12M expose.

On the other hand, between crotch outside the portion load 12M can constitute and utilize a slice to cover its coating scope integral body, but, as shown in figure 10, also can at least one side of fore-and-aft direction and width in abutting connection with ground or devices spaced apart be set up in parallel between the multi-disc crotch load 12M outside the portion.Load 12M can adjacency outside the portion between the multi-disc crotch, still, is provided with if separate predetermined interval d, then can suppress the raw material use amount and can improve aeration, can spread all over the back side that wider scope covers absorbent main body 20.This interval d can suitably determine, generally can form about 5～30mm.

In addition, be provided with between the multi-disc crotch outside the portion under the situation of load 12M separating predetermined interval d, if from the face of absorber 56 sides of opaque liquid sheet 70 in the thickness direction scope of the face of opaque liquid sheet 70 sides of absorber 56, the indicator i of the absorption that shows liquid to be set with the eclipsed mode in the position of devices spaced apart d, then can be by there not being the demonstration of the part Visual Confirmation indicator i of load 12M outside the portion between crotch, rather than pass through the demonstration of load 12M Visual Confirmation indicator i outside the portion between crotch, so Visual Confirmation is good.Certainly, so long as do not have between crotch the part of load 12M outside the portion in the absorbent main body 20, also can indicator be set at other position.

As indicator i, can form by the following method: color by contacting the applying coating that changes with liquid on the face of absorber 56 sides of opaque liquid sheet 70 or be coated on the face of opaque liquid sheet 70 sides of absorber 56, perhaps will be coated with color and be installed between opaque liquid sheet 70 and the absorber 56 by the parts that contact the coating that changes with liquid.

And, in mode shown in Figure 10, be set side by side with between the multi-disc crotch load 12M outside the portion, but also can load 12M outside the portion be set between the multi-disc crotch simultaneously at width at fore-and-aft direction.Especially, separate predetermined interval in width central authorities, be provided with respectively in the both sides at this interval between crotch that the mode of load 12M is optimal way (diagram slightly) outside the portion.

(about the fit elastic telescopic parts of using of buttocks)

As mentioned above, have between crotch outside the portion in the structure of load 12M, in the part that the superimposed sheets number of Zhuan sheet changes, the stiffness of outer dress changes outside, so particularly be easy to generate among Figure 20 with the buckling phenomenon shown in the arrow in posterior components.Therefore, in order to prevent this situation, as Figure 11～shown in Figure 16, also proposed following manner: the ratio absorptive unit 50 in absorbent main body 20 more leans on the position of rear side, at least spread all over from the position in the rearward end 22 to pars intermedia the fore-and-aft direction scope at the position in 23, be fixed with elastic telescopic parts 25 with state along the fore-and-aft direction elongation.Therefore by elastic telescopic parts 25 are set like this, the scope that the contractility of elastic telescopic parts 25 spreads all over across outer rim circle BL plays a role, and this part is fit along body surface, is difficult to take place buckling phenomenon in the past.

In diagramatic way, adopt the elongate elastic telescopic parts of rubber covered wires and so on as elastic telescopic parts 25, but also can use the elastic telescopic parts of width broad such as banded or netted.The size of elastic telescopic parts 25 and percentage elongation, configuration etc. can suitably be determined, to bring into play the bending effect that prevents of the present invention.

The fore-and-aft direction scope 25L that elastic telescopic parts 25 are set (in other words, bear the fore-and-aft direction scope of the contractility of elastic telescopic parts 25) can suitably determine, be preferably boundary B L with pars intermedia in the absorbent main body 20 23 and rearward end 22 and be benchmark from 5～180mm of rearward end 22 sides, be preferably the position of 10～90mm to 5～180mm of pars intermedia 23 sides, be preferably the position of 10～90mm.If 25L is too narrow for this fore-and-aft direction scope, then shortage prevents bending effect, if too wide, prevents bending effect though then can bring into play, and can cause outward appearance to become and the cost increase, is not preferred therefore.

Generally, it is benchmark from the position of the 5mm of dorsal part in the fore-and-aft direction scope 25L of the position of 180mm that elastic telescopic parts 25 preferably are arranged on the CL of product fore-and-aft direction central authorities, preferably at veutro same elastic telescopic parts is not set.And, as shown example like that, load 12M clips under the situation of elastic telescopic parts 25 outside the portion utilizing between crotch, the dorsal part end of preferred elastomeric extensible member 25 between crotch outside the portion dorsal part end side between crotch of load 12M leave, this leaves apart from 25Y and is preferably more than the 5mm.

As long as elastic telescopic parts 25 are configured in than absorptive unit 50 more by the position of rear side, then can be arranged on any position of thickness direction, in illustrated example, only be arranged between opaque liquid sheet 70 and crotch outside the portion between the load 12M.Though do not illustrate, but also can constitute in the following manner: load 12M outside the portion between crotch is sticked on the outside of outer load 12F, 12B of veutro and dorsal part, elastic telescopic parts 25 are clipped between opaque liquid sheet 70 and crotch outside the portion between the load 12M in pars intermedia 23, are clipped in rearward end 22 outside the dorsal part between load and crotch outside the portion between the load 12M.

Using under the situation of elongate elastic telescopic parts as elastic telescopic parts 25, the position of its width can suitably be determined, but preferably example only is provided with along fore-and-aft direction respectively in the width central authorities and the width both sides of absorbent main body 20 like that abreast as shown.And, under the situation that three row elongate elastic telescopic parts 25 are set like this,, preferably be rubber covered wire (the elastomeric situation of 470～1000dtex with thickness as each elastic telescopic parts 25.Under the situation of natural rubber, sectional area is 0.1～1.0mm ²About), the percentage elongation with 150～220% is fixed with the interval D of the interval of 10～100mm, particularly 30～70mm at width.If the effect of the contractility of elastic telescopic parts 25 is insufficient, then be easy to generate bending, and, if contractility is strong excessively, then might produce bending on the contrary.Leaving apart from 25D of the elastic telescopic parts 25 that are positioned at the width both sides and the width both sides of the edge of absorbent main body 20 is preferably 0～60mm, is preferably 10～40mm especially.

In addition, under the situation that three row elongate elastic telescopic parts 25 are set like this, especially preferably make the percentage elongation height of the percentage elongation of the elongate elastic telescopic parts 25 that are arranged on the width central part than the elongate elastic telescopic parts 25 that are arranged on the width both sides.

As shown in figure 17, elastic telescopic parts 25 also can only be provided with along fore-and-aft direction respectively in the width both sides of absorbent main body 20 abreast.In this case, as each elastic telescopic parts 25, preferably be rubber covered wire (the elastomeric situation of 470～1000dtex with thickness.Under the situation of natural rubber, sectional area is 0.1～1.0mm ²About), the percentage elongation with 150%～220% is fixed with the interval D of 20～180mm, particularly 60～140mm at width.And leaving apart from 25D of the elastic telescopic parts 25 that are positioned at the width both sides and the width both sides of the edge of absorbent main body 20 is preferably 0～60mm, is preferably 10～40mm especially.

(fixing the method for elastic telescopic parts by the welding sheet)

For above-mentioned various elongate elastic telescopic parts (15,16,25 etc.),, can also utilize following method to fix in the mode of not damaging aeration except utilizing adhesive securement such as hot-melt adhesive on the abutment flange.

Figure 18 represents following method: applied under the state of tensile force on to elongate elastic telescopic parts EL, with predetermined interval sheet ST, the ST that is used to clip elongate elastic telescopic parts EL carried out welding, thus, elongate elastic telescopic parts EL is by the frictional force of itself and sheet ST, ST and be fixed.Label M among the figure represents weld, and label N represents non-weld.By forming this structure, needn't use bonding agent just can firmly fix elongate elastic telescopic parts EL.And elongate elastic telescopic parts EL can form the pars contractilis of having guaranteed aeration and pliability thus not by bonding.Welding can be ultrasonic fusing or thermal welding.But,, therefore be more preferably the use ultrasonic fusing because ultrasonic fusing is given elongate elastic telescopic parts EL and sheet ST, the heat of ST periphery and the influence of pressure are lacked than thermal welding.

And, Figure 19 represents following method: elongate elastic telescopic parts EL is being applied under the state of tensile force, with predetermined interval both ends and sheet ST, the ST of the width of elongate elastic telescopic parts EL carried out welding, thus, elongate elastic telescopic parts EL is fixed on sheet ST, the ST by the bonding force of the end of the width of the frictional force of itself and sheet ST, ST and elongate elastic telescopic parts EL.Label M among the figure represents weld, and label N represents non-weld.By forming this structure, except by and sheet ST, ST between frictional force, also the bonding force by the end of the width of elongate elastic telescopic parts EL firmly fixes elongate elastic telescopic parts EL more.In addition, owing to only carry out bondingly, therefore there is not the probability of elongate elastic telescopic parts EL deterioration or cut-out in the end of the width of elongate elastic telescopic parts EL.

In addition, for elongate elastic telescopic parts EL by itself and sheet ST, the structure that frictional force between the ST is fixed, by elongate elastic telescopic parts EL is being applied under the state of tensile force, near the both ends of the width of elongate elastic telescopic parts EL, intermittently la m and outside layer are carried out welding, EL is fixed on sheet ST with elongate elastic telescopic parts, on the ST, thus, when subsequently load being disappeared, (do not have and stretch), the cross section external diameter of elongate elastic telescopic parts EL becomes big, utilizes and sheet ST, the weld of ST applies pressing force in the mode of the width that clips elongate elastic telescopic parts EL from both sides.Consequently, needn't utilize bonding agent to fix elongate elastic telescopic parts EL, only utilize the frictional force between elongate elastic telescopic parts EL and sheet ST, the ST just can elongate shape elastic telescopic parts EL.

Utilizability on the industry

The present invention can be applied to be pre-formed the pants-type paper diaper into pants type.

Claims (16)

1, a kind of pants-type paper diaper, described pants-type paper diaper possesses:

The waist portion of tubular, the outer load of dorsal part of outer load of its veutro by the veutro in the waist that covers wearer and covering dorsal part constitutes, the waist portion of described tubular forms, and the junction surface of the width both sides of the edge of the junction surface of the width both sides of the edge of the outer load of veutro and the outer load of dorsal part engages and the outer load of veutro and the outer load side between crotch of dorsal part are left and discontinuous; And

Absorbent main body, its leading section is connected on the width central part inner surface of the outer load of described veutro, and the rearward end of this absorbent main body is connected on the width central part inner surface of the outer load of described dorsal part, pars intermedia between these leading sections and the rearward end outside the veutro that is in side between described crotch outside load and the dorsal part part of leaving of load expose to the outside, and this absorbent main body covers to veutro by portion between crotch from dorsal part, it is characterized in that

Described absorbent main body has: the liquid permeability top flat that is provided in the surface; Be provided in the opaque liquid sheet of rear side; And the absorptive unit that is arranged on the absorption maintenance liquid between liquid permeability top flat and the opaque liquid sheet,

Expose between the crotch of product outside the rear side that load outside the portion is layered in the described opaque liquid sheet in the described absorbent main body, the fore-and-aft direction scope that load spreads all over the position between the side edge between the crotch of the load outside the rear end of described absorbent main body and described dorsal part of the position between the side edge between the crotch of load outside the front end of described absorbent main body and described veutro outside the portion between this crotch is provided with

Described absorbent main body has with the lower part: be defined as the front side of the fore-and-aft direction scope of the front end of load outside adorning non-overlapped part outside the portion from the front end of described absorbent main body up between described crotch; Adorn lap outside the eclipsed front side of side end between the crotch of the outer load of the leading section of load and described veutro outside the portion between described crotch; Be defined as up between described crotch, adorning non-overlapped part outside the rear side of the fore-and-aft direction scope of the rear end of load outside the portion from the rear end of described absorbent main body; And between described crotch outside the portion between the crotch of the outer load of the rearward end of load and described dorsal part the eclipsed rear side of side end adorn lap outward,

Sheet number for the sheet of the rear side that is arranged on described opaque liquid sheet, sheet number in establishing described pars intermedia is B1, establish that to adorn the sheet number of adorning outside lap and the rear side in the lap outside the described front side be A1, establish when adorning the sheet number of adorning outside non-overlapped part and the rear side in the non-overlapped part outside the described front side and being C1, has the relation of B1＜C1＜A1.

2, pants-type paper diaper according to claim 1, wherein,

Basic weight for the sheet of the rear side that is arranged on described opaque liquid sheet, the basic weight of the sheet in establishing described pars intermedia is B2, establish that to adorn the basic weight of adorning the sheet in the lap outside lap and the rear side outside the described front side be A2, establish when adorning the basic weight of adorning the sheet in the non-overlapped part outside non-overlapped part and the rear side outside the described front side and being C2, has the relation of B2＜C2＜A2.

3, pants-type paper diaper according to claim 1 and 2, wherein,

Described pants-type paper diaper constitutes: adorn the lap of the fore-and-aft direction in the lap and lap that described rear side is adorned the fore-and-aft direction in the lap outward outside the described front side and be respectively 10～90mm.

4, according to each the described pants-type paper diaper in the claim 1～3, wherein,

Outer load of described veutro and/or the outer load of dorsal part have: main part, and it occupies identical above-below direction scope with described junction surface; And extension, its downside to this main part extends,

Adorning the lap of the fore-and-aft direction in the lap and/or lap that described rear side is adorned the fore-and-aft direction in the lap outward outside the described front side forms: short and 1/2 long than the fore-and-aft direction length of extension than the fore-and-aft direction length of the extension of each side of front side rear side.

5, according to each the described pants-type paper diaper in the claim 1～4, wherein,

Constitute between described crotch the rigidity height that the ratio of rigidity of the sheet of load outside the portion constitutes the sheet of outer load of described veutro and the outer load of dorsal part.

6, according to each the described pants-type paper diaper in the claim 1～5, wherein,

The described absorptive unit of ratio in described absorbent main body more leans on the position of rear side, at least the fore-and-aft direction scope that spreads all over the position of position in described pars intermedia in the described rearward end is fixed with the elastic telescopic parts with the state along the fore-and-aft direction elongation.

7, pants-type paper diaper according to claim 6, wherein,

Described elastic telescopic parts are arranged between described opaque liquid sheet and described crotch outside the portion between the load.

8, according to claim 6 or 7 described pants-type paper diapers, wherein,

Width central authorities in described absorbent main body and width both sides are provided with elongate elastic telescopic parts abreast along fore-and-aft direction respectively, are used as described elastic telescopic parts.

9, pants-type paper diaper according to claim 8, wherein,

Percentage elongation with 150%～220%, with the fixed interval of 10～100mm thickness to be arranged on width be the rubber covered wire of 470～1000dtex, is used as described elongate elastic telescopic parts.

10, according to Claim 8 or 9 described pants-type paper diapers, wherein,

The percentage elongation of the described elongate elastic telescopic parts that are arranged on the width central part is than the described percentage elongation height that is arranged on the elongate elastic telescopic parts of width both sides.

11, according to each the described pants-type paper diaper in the claim 6～10, wherein,

Described elastic telescopic parts are benchmark with the border of pars intermedia in the described absorbent main body and rearward end, extend 5～180mm and extend 5～180mm in the pars intermedia side in the rearward end side.

12, according to each the described pants-type paper diaper in the claim 1～11, wherein,

Between described crotch outside the portion load form identical with described absorbent main body width.

13, according to each the described pants-type paper diaper in the claim 1～11, wherein,

Between described crotch outside the portion load form wideer than described absorbent main body.

14, according to each the described pants-type paper diaper in the claim 1～11, wherein,

Between described crotch outside the portion load form narrower than described absorbent main body.

15, according to each the described pants-type paper diaper in the claim 1～14, wherein,

At described mid portion, separate the predetermined load outside the portion that is interval with between the multi-disc crotch.

16, pants-type paper diaper according to claim 15, wherein,

At least in the described absorbent main body of described mid portion, do not have between described crotch an indicator that the part of load outside the portion is provided with the absorption that shows liquid.

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