CN101677898A - disposable diaper - Google Patents

Abstract

A disposable diaper in which deformation of an absorption core does not cause separation of the joint between an inner body and a belly-side or rear-side outer sheet nor does the disposable diaper cause deterioration in appearance and wearing comfort. [MEANS FOR SOLVING PROBLEMS] In the disposable diaper, a front end section of the inner body (20) is connected to the inner surface at the lateral center of the belly-side outer sheet (12F), a rear end section of the inner body (20) is connected to the inner surface of the lateral center of the rear-side outer sheet (12B), and the belly-side outer sheet (12F) and the rear-side outer sheet (12B) do not continue to each other on the crotch side. The disposable diaper is constructed to satisfy the relationships of 90 mm = W1 < W2 = 190 mm, 0 mm= L1 - L2 = 70 mm, and 0 mm = L3 - L4 = 50 mm, where L1 is the length of an absorption-core front end section (56F), L2 the length of the portion of overlap between the absorption core (56) and the rear-side outer sheet (12B), L3 the length of an absorption-core rear end section (56B), L4 the length of the portion of overlap between the absorption core (56) and the rear-side outer sheet (12B), W1the width of a narrow section (56N), and W2 the width of the absorption-core front end section and the absorption-core rear end section.

Description

Disposable diaper

Technical field

The present invention relates to a kind of disposable diaper.

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 interior dress 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.Interior dress body has: the liquid permeability surface patch; And the absorbent cores (absorbent core) that forms by fiber assembly that is configured in the outer surface side of liquid permeability surface patch.As fiber assembly, be extensive use of by to the long-pending fine (Plot fibre of paper pulp fiber) fiber assembly that forms.

Kind with respect to the outer load of this use one has proposed outer load is divided into veutro and the two-part disposable diaper (for example with reference to patent documentation 7) that is also referred to as the type of being divided into two of dorsal part in recent years.In the disposable diaper of the type of being 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 can select outer load of veutro and the outer load raw material separately of dorsal part separately, foot passes easily so is convenient to dress (being convenient to dress) during wearing, is convenient to foot's activity in the wearing process.

Patent documentation 1: the spy opens the 2001-340380 communique

Patent documentation 2: the spy opens the 2002-159528 communique

Patent documentation 3: the spy opens the 2005-065729 communique

Patent documentation 4: the spy opens the 2002-291799 communique

Patent documentation 5: the spy opens the 2004-081369 communique

Patent documentation 6: the spy opens the 2000-005230 communique

Patent documentation 7: the spy opens the 2005-027839 communique

In the disposable diaper of the type of being divided into two,, therefore, the fore-and-aft direction pars intermedia of absorbent cores is tightened up as far as possible in longer scope in order to improve to the fit around the shank because the shape of absorbent cores brings very big influence can for the degree of freedom of shank.

But, in the disposable diaper of the type that is divided into two, because the area of the bonding portion of outer load of interior dress body and veutro and the outer load of dorsal part is very little, power in being applied on the dress body concentrates on bonding portion, if therefore considering fit and absorbent cores is tightened up only, can cause the rigidity of absorbent cores to descend, then as shown in figure 12, might since the absorbent cores distortion cause in outside dress body and the veutro outside load or the dorsal part load bonding peel off mutually or expose hip etc. and cause outward appearance and wearing feeling variation.

In addition, in the disposable diaper of the type that is divided into two, narrow down owing to push down the area of the outer load around the shank, the degree of freedom around the shank increases, and therefore is easy to generate the gap around shank.

On the other hand, in disposable diaper, in order to prevent so-called transverse leakage, the zonal way on limit (barrier cuffs) that stops of setting direction extension forwards, backwards along the width both sides has fixed, and proposed the various limits that stop when obtaining excellent fit and leak preventing effect, made that portion seems clean and tidy between crotch.

What particularly be called as " clean and tidy shape " stops that limit (with reference to patent document 1,2) structure is the shank surrounding structure of kind of excellence at following this respect: being disposed at by removal outside on the load in the past just the limit (three-dimensional fold) that stops of existence make load outside the portion both sides of the edge do not exist between crotch, and the limit that stops that will erect from the rear side of interior dress body erects the sidepiece with dress body in lifting, thereby can take into account clean and tidy sense and leak preventing effect simultaneously.

In addition, in order to obtain more significant leak preventing effect, proposed also to stop that as other technology the limit is arranged to bilayer (with reference to patent documentation 6).And, also proposed except that the double-deck structure (with reference to patent document 4,5) that also has the plane fold the limit that stops as similar technology.

But, shown in patent document 6, be arranged to bilayer even will stop the limit, because double-deck fold almost erects with overlap condition, therefore in fact also fail to obtain the leak preventing effect of twice.In addition, shown in patent document 4,5, even the mode that erects with the face side at interior dress body is provided with the inboard and stops the limit, and make and erect starting point and be positioned at position than the more close width center side of dress side edge, so that play a role as outside fold than the sidepiece that erects the interior dress body that starting point more extends to the width outside, because this outside fold is interior dress body originally, therefore also be difficult to guarantee to erect fully size, even and increasing erects size by force, inboard and the outside stop that the limit is also overlapping easily, all can not improve leak preventing effect fully in any case.For this reason, outer load also needs shank fold (plane fold) on every side, impairs clean and tidy outward appearance.

Summary of the invention

Therefore, foot passed, seems when wearing clean and tidy easily and be difficult for producing the Breeches type disposable diaper in gap around foot when major subjects of the present invention was to obtain a kind of the wearing, the problems referred to above that are divided into two and exist in the disposable diaper of type particularly in solution.

In addition, problem of the present invention also is the problems referred to above of existing in the Breeches type disposable diaper in order to solve, and provides a kind of bilayer that neatly can bring into play excellent leak preventing effect that both seemed to stop the limit structure.

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

The described invention of＜the first scheme 〉

A kind of Breeches type disposable diaper, described Breeches type disposable 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, outside the upper end-face edge of waist portion load outside veutro of described tubular and the dorsal part under the state of the upper end-face edge of load alignment, engage by junction surface and to form 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; And

In the dress body, its leading section is connected in the width central part inner surface of the outer load of described veutro, and should in the rearward end of dress body be connected in the width central part inner surface of the outer load of described dorsal part, and should in the dress body cover to veutro by portion between crotch from dorsal part,

The dress body has in described: the liquid permeability surface patch; And the absorbent cores that forms by fiber assembly that is equipped on the outer surface side of this liquid permeability surface patch,

The outer load side between crotch of outer load of described veutro and dorsal part is left and discontinuous,

It is characterized in that, the constituting of described disposable diaper,

Described absorbent cores has: leading section; Rearward end; And between leading section and rearward end and with leading section, compare the narrow portion of tightening up of width with rearward end,

The fore-and-aft direction length of the eclipsed lap of load is that the fore-and-aft direction length of L2, described absorbent cores rearward end is the width of the width that fore-and-aft direction length is L4, the described minimum widith that tightens up portion is W1, described absorbent cores leading section of the eclipsed lap of load outside L3, described absorbent cores and the described dorsal part and absorbent cores rearward end when being W2 outside the fore-and-aft direction length of establishing described absorbent cores leading section is L1, described absorbent cores and described veutro, satisfies following formula (1)～(3):

70mm≤W1＜W2≤190mm…(1)

0mm≤L1-L2≤70mm…(2)

0mm≤L3-L4≤50mm…(3)

＜action effect 〉

Breeches type disposable diaper for the described invention of this programme, by satisfying the condition of following formula (1), can guarantee the width of absorbent cores fully, and by satisfying following formula (2) and (3), absorbent cores leading section that width is wideer and rearward end extend to the position of more leaning on side between crotch than the lower limb of outer load of veutro and the outer load of dorsal part fully.Consequently, the high rigid element of absorbent cores extends to the position of more leaning on side between crotch than the lower limb of outer load of veutro and the outer load of dorsal part fully, promptly exert all one's strength and concentrate on interior dress body and outer load of veutro and the outer mutually bonding bonding portion of load of dorsal part, absorbent cores is not yielding yet, thus reduced outer load of interior dress body and veutro or the outer load of dorsal part bonding come off or spill outward appearance such as hip and dress the danger of sense variation.

The described invention of＜alternative plan 〉

According to the described Breeches type disposable diaper of first scheme, wherein,

In described, adorn in the body, at least outside the width both sides of the edge of interior dress body and veutro near the intersection point of the lower edge of load and outside the width both sides of the edge of interior dress body and the dorsal part near the intersection point of the lower edge of load, rigidity is 15～50cN/50mm.

＜action effect 〉

If the rigidity of the described part of this programme is within the described scope of this programme at least in the interior dress body, then the effect of the described invention of aforementioned approaches case is more remarkable.

The described invention of＜third party case 〉

According to the described Breeches type disposable diaper of first scheme, wherein,

The width both sides of dress body are provided with the zonal limit that stops that erects towards bodyside at the front end from interior dress body along fore-and-aft direction to the scope of rear end in described,

Stop in front part, rear section and the front part and the mid portion between the rear section on limit at this, front part and rear section are fixed with respect to described surface patch under the state folding in the mode that does not erect, and mid portion is not fixed, and be fixed with elongate elastic telescopic parts at this mid portion with state at least along the fore-and-aft direction elongation

Be L5 when establishing the described fore-and-aft direction length that stops the front part on limit, when the described fore-and-aft direction length that stops the rear section on limit is L6, satisfy following formula (4) and (5):

L2＜L5…(4)

L4＜L6…(5)

＜action effect 〉

The described invention utilization of this programme for make stop that the limit erects and in front part and rear section fixedly improve by necessity bonding etc. formed the rigidity of the both sides of dress body.Be characterised in that, by satisfying the condition of above-mentioned formula (4) and (5), utilize near the assign to rigidity of the dress body both sides that raising power is concentrated easily, as to be positioned at outer load of veutro and the outer load of the dorsal part lower limb of the fixed part that stops the limit.Therefore, the effect of the described invention of aforementioned approaches case is more remarkable.

The described invention of＜the cubic case 〉

According to the described Breeches type disposable diaper of first scheme, wherein,

The fibre density of the described absorbent cores leading section of described absorbent cores and absorbent cores rearward end width both sides separately is greater than the fibre density of width pars intermedia.

＜action effect 〉

The described invention of this programme has following feature: in the leading section at least and the rearward end of absorbent cores, only densification is carried out in the width both sides.By carrying out this densification, can not damage the desired various characteristics of absorbent cores, and near the rigidity of the dress body both sides the power lower limb that concentrate easily, that be positioned at outer load of veutro and the outer load of dorsal part is improved.Therefore, the effect of the described invention of aforementioned approaches case is more remarkable.

The described invention of＜the five scheme 〉

According to the described Breeches type disposable diaper of first scheme, wherein,

Be respectively equipped with along the width both sides of described interior dress body and stop the limit in the zonal inboard that fore-and-aft direction extends, and stop that in described inboard the width both sides that the outside on limit is respectively equipped with dress body in described stop the limit in the zonal outside that fore-and-aft direction extends

Described inboard stops that the end of width one side on limit forms the installed inside part that the width end with respect to described in-built body is fixed; Part beyond this installed inside part forms the inboard ledge of partly giving prominence to from installed inside; The surface of described surface patch is fixed at fore-and-aft direction both ends in this inboard ledge; The fore-and-aft direction pars intermedia forms the free part in loose inboard; At least the leading section of free part is fixed with elongate elastomeric element along fore-and-aft direction with elongation state in this inboard

The described outside stops that the end of width one side on limit forms the mounting portion, the outside that is fixed with respect to the rear side position of adorning the width end of body in described, part beyond this mounting portion, outside forms the outside ledge outstanding from mounting portion, the outside, fore-and-aft direction both ends in this outside ledge partly are made of root side part and front, described side part extends to the surface that described inboard stops the fore-and-aft direction both ends of the inboard ledge the limit from mounting portion, the described outside by the sidepiece of dress body in described, and be fixed in the surface at the fore-and-aft direction both ends of described inboard ledge, described front part is turned back to the width outside from the front end of this root side part, and be fixed in described side part, the fore-and-aft direction pars intermedia is the free part in the loose outside, and the leading section at least of free part is fixed with elongate elastomeric element along fore-and-aft direction with elongation state in this outside.

＜action effect 〉

The described invention of this programme has following feature: will stop that the limit forms the inside and outside dual structure, and the fixed part that is positioned at the fore-and-aft direction both ends in the inboard inboard ledge that stops the limit is not turned back, but the outside is stopped the fore-and-aft direction both ends in the outside ledge on limit turn back to the width outside, and with the outside stop the mounting portion, the outside on limit be disposed in the rear side position of dress body.If the outside stops that the mounting portion, the outside on limit is positioned at dress body rear side, then because the outside stops that the limit erects in open mode outside width at the fore-and-aft direction pars intermedia, and then with around the face butt shank, so fit is improved.And, because the fixed part at the fore-and-aft direction both ends in the inboard ledge is not turned back, but the fixed part at the fore-and-aft direction both ends in the ledge of the outside is outwards turned back on width, so the inboard and the outside stop inboard in the limit and free section, the outside state that leaves between dividing and are maintained, and the inboard and outside stops that the limit erects reliably with the interval of broad, and then be fitted in around the shank respectively, so anti-leakage excellence.That is and since have erecting property excellent and be convenient to the shape of face contact skin stop the limit around the position of leaving is fitted in shank doubly, therefore can prevent leakage of exudates reliably.

The described invention of＜the six scheme 〉

According to the described disposable diaper of the 5th scheme, wherein,

Described installed inside part be positioned at the end that described inboard stops width one side on limit, with respect to comprise described in the position at face side position of width end of dress body be fixed.

＜action effect 〉

The described invention of this programme has following feature: the inboard is stopped that the installed inside on limit partly is configured in the position at the face side position that comprises interior dress body.Because the inboard installed inside on limit that stops partly is positioned at the surperficial both sides of dress body, therefore the border that becomes the installed inside part that erects starting point and inboard ledge is left to the width center side from the lateral margin of interior dress body, the contractility that stops the elastomeric element on limit by inboard and the outside, not only make the inboard and the outside stop that the limit erects towards bodyside, and more also erecting in the interior dress body towards bodyside by the sidepiece in the width outside than inboard ledge, should in the sidepiece of dress body stop between the limit in inboard and the outside and play a role that and performance is as inboard and the outside are stopped that the limit maintains the effect of the sept of the state of leaving as intermediary barrier.

Consequently, in the described invention of this programme, the inboard and outside stops that the limit erects with wideer interval, and is fitted in around the shank in position respectively.

The described invention of＜the seven scheme 〉

According to the described disposable diaper of the 6th scheme, wherein,

The border of described installed inside part and described inboard ledge is configured to pass through the described portion of tightening up along fore-and-aft direction.

＜action effect 〉

When absorber has the situation of the portion of tightening up,, therefore around shank, be easy to generate the gap because the degree of freedom around the shank further increases.The aforesaid limit that stops is for the fit excellence around the shank, but particularly tighten up under the situation of portion in setting on the absorbent cores, by constituting as described in this programme, the inboard stops that the limit can erect passing through on the line of the portion of tightening up, so fit can obtain improving more significantly.

＜the described invention of case from all directions 〉

According to the described disposable diaper of the 7th scheme, wherein,

Under the unfolded state of diaper, the border of described installed inside part and described inboard ledge is positioned at lateral margin from described dress surface side to the position of width center side 3～20mm, and the mounting portion, the described outside and the described outside are given prominence to portion boundary and be positioned at the position of adorning the lateral margin of body rear side to width center side 5～30mm from described.

＜action effect 〉

If the width at face side position of interior dress body that is used for fixing installed inside part is within the described scope of this programme, then aforesaid effect is more remarkable.

The described invention of＜the nine scheme 〉

According to the described disposable diaper of all directions case, wherein,

The outer surface side of the described absorbent cores of dress body is covered by the opaque liquid sheet in described, this opaque liquid sheet is walked around the width both sides of described absorbent cores, and extends to and be positioned at the described installed inside part of surface patch side of described absorbent cores and the corresponding position, border of described inboard ledge.

＜action effect 〉

In the described invention of this programme, can cross a spot of Excreta that the inboard stops the limit by stopping that in inboard and the outside the interior dress body both sides of lifting between the limit stop, therefore as described in this programme, can be by at the built-in opaque liquid sheet of the side surface side of interior dress body, cross a small amount of Excreta urine that the inboard stops the limit or the moisture of soft stool oozes out thereby can stop effectively.And, utilize as the employed opaque liquid sheet of the rear side parts of interior dress body, so the material cost increase is less, can also avoid production process complicated.

The described invention of＜the ten scheme 〉

According to the described disposable diaper of the 9th scheme, wherein,

The width of described inboard ledge is greater than the width of the side, interior dress surface that is fixed with described installed inside part,

Width in the root side of the described outside ledge part, that under the diaper deployed condition, be positioned at the part of described dress surface side, with the width sum of the front part of described outside ledge greater than the width that is fixed with described installed inside side, dress surface partly

Described inboard stops that the limit and the outside stop not built-in opaque liquid sheet in the limit.

＜action effect 〉

Such as described above, make the opaque liquid sheet extend under the situation of lateral margin of dress body, erect then can damage breathability around the shank if the sidepiece of interior dress body is high, might after drainage, cause sense of discomfort to wearer.To this, by adopting the such structure of this programme, what cause the breathability step-down owing to opaque liquid sheet built-in only is the sidepiece of the lower and difficult obstruction breathability of the height of interior dress body, highly higher and become the inboard of ventilative obstacle and the outside and stop that the limit then can keep higher breathability.Therefore, do not damage aforesaid anti-seepage effect and just can keep higher breathability.

＜the ten one described invention of scheme 〉

A kind of disposable diaper, described disposable diaper possesses:

In the dress body, described in the dress body have the liquid permeability surface patch and be disposed at the absorbent cores of the outer surface side of this liquid permeability surface patch, and should in the dress body cover to veutro by portion between crotch from dorsal part; And

Be installed on the flaky exterior body of the outer surface side of dress body in this,

It is characterized in that,

Be respectively equipped with along the width both sides of described interior dress body and stop the limit in the zonal inboard that fore-and-aft direction extends, and stop that in described inboard the width both sides that the outside on limit is respectively equipped with dress body in described stop the limit in the zonal outside that fore-and-aft direction extends

Described inboard stops that the end of width one side on limit forms the installed inside part that the position with respect to the face side position of the width end that comprises described in-built body is fixed; Part beyond this installed inside part forms the inboard ledge of partly giving prominence to from installed inside; The surface of described surface patch is fixed at fore-and-aft direction both ends in this inboard ledge; The fore-and-aft direction pars intermedia forms the free part in loose inboard; At least the leading section of free part is fixed with elongate elastomeric element along fore-and-aft direction with elongation state in this inboard

The described outside stops that the end of width one side on limit forms the mounting portion, the outside that is fixed with respect to the rear side position of adorning the width end of body in described, part beyond this mounting portion, outside forms the outside ledge outstanding from mounting portion, the outside, fore-and-aft direction both ends in this outside ledge partly are made of root side part and front, described side part extends to the surface that described inboard stops the fore-and-aft direction both ends of the inboard ledge the limit from mounting portion, the described outside by the sidepiece of dress body in described, and be fixed in the surface at the fore-and-aft direction both ends of described inboard ledge, described front part is turned back to the width outside from the front end of this root side part, and be fixed in described side part, the fore-and-aft direction pars intermedia forms the free part in the loose outside, and the leading section at least of free part is fixed with elongate elastomeric element along fore-and-aft direction with elongation state in this outside.

＜action effect 〉

The described invention of this programme has following feature: will stop that the limit forms the inside and outside dual structure, and the fixed part that is positioned at the fore-and-aft direction both ends in the inboard inboard ledge that stops the limit is not turned back, but the outside is stopped the fore-and-aft direction both ends in the outside ledge on limit turn back to the width outside, and the inboard is stopped that the installed inside on limit partly is configured in the position at the face side position that comprises interior dress body, the outside is stopped that the mounting portion, the outside on limit is configured in the rear side position of interior dress body.

If the outside stops that the mounting portion, the outside on limit is positioned at the rear side of dress body, then because the outside stops that the limit erects in open mode outside width at the fore-and-aft direction pars intermedia, and then with around the face butt shank, so fit is improved.

And, be characterised in that, because the inboard installed inside on limit that stops partly is positioned at the surperficial both sides of dress body, so the border that becomes the installed inside part that erects starting point and inboard ledge is left to the width center side from the lateral margin of interior dress body, the contractility that stops the elastomeric element on limit by inboard and the outside, not only make the inboard and the outside stop that the limit erects towards bodyside, and more also erecting in the interior dress body towards bodyside by the sidepiece in the width outside than inboard ledge, thereby should in the sidepiece of dress body stop between the limit in inboard and the outside and play a role that and performance is as inboard and the outside are stopped that the limit maintains the effect of the sept of the state of leaving as intermediary stopping.

Consequently, in the described invention of this programme, the inboard and outside stops the limit non-overlapping copies and erects with the interval of broad, thereby is fitted in around the shank in position respectively.That is and since have erecting property excellent and be convenient to the shape of face contact skin stop the limit around the position of leaving is fitted in shank doubly, therefore not only can make outward appearance neatly but also can bring into play excellent leak preventing effect.

＜the ten two described invention of scheme 〉

According to the described disposable diaper of the 11 scheme, wherein,

Under the unfolded state of diaper, the border of described installed inside part and described inboard ledge is positioned at lateral margin from described dress surface side to the position of width center side 3～20mm, and the mounting portion, the described outside and the described outside are given prominence to portion boundary and be positioned at the position of adorning the lateral margin of body rear side to width center side 5～30mm from described.

＜action effect 〉

If the width that is used for fixing installed inside side, interior dress surface partly is within the described scope of this programme, then aforesaid effect is more remarkable.

＜the ten three described invention of scheme 〉

According to the described disposable diaper of the 12 scheme, wherein,

Under the unfolded state of diaper, the border of described installed inside part and described inboard ledge is positioned at lateral margin from described dress surface side to the position of width center side 3～20mm, and mounting portion, the described outside and the described outside are given prominence to portion boundary and be positioned at the position of adorning the lateral margin of body rear side to width center side 5～30mm from described.

＜action effect 〉

In disposable diaper, ooze out from stopping the limit in order to prevent liquid component, also have in the motion that stops limit inner laminated opaque liquid sheet.The opaque liquid sheet that stops inside, limit generally is that the opaque liquid sheet of the covering absorbent cores rear side of dress in the body in making extends until stopping inside, limit, or is stopping another sheet of limit inner stacks (with reference to patent document 3).But, stop inside, limit if the opaque liquid sheet is built in, have that material cost increases, the complicated problem of manufacturing process.

In the described invention of this programme, stop a small amount of Excreta on limit for crossing the inboard, can utilize in the inboard and the outside and stop that the interior dress body both sides of lifting between the limit stop, therefore as described in this programme, by at the built-in opaque liquid sheet of the side surface side of interior dress body, cross a small amount of Excreta urine that the inboard stops the limit or the moisture of soft stool oozes out thereby can stop effectively.And, owing to utilized as the employed opaque liquid sheet of the rear side parts of interior dress body, so the increase of material cost is less, can also avoid production process complicated.

The described invention of＜the ten cubic case 〉

According to the described disposable diaper of the 13 scheme, wherein,

The width of described inboard ledge is greater than the width of the side, interior dress surface that is fixed with described installed inside part,

Width in the root side of the described outside ledge part, that under the diaper deployed condition, be positioned at the part of described dress surface side, with the width sum of the front part of described outside ledge greater than the width that is fixed with described installed inside side, dress surface partly

Described inboard stops that the limit and the outside stop not built-in opaque liquid sheet in the limit.

＜action effect 〉

Such as described above, make the opaque liquid sheet extend in during the situation of lateral margin of dress body, erect then can damage breathability around the shank if the sidepiece of interior dress body is high, might after drainage, cause sense of discomfort to wearer.To this, by adopting the such structure of this programme, what cause the breathability step-down owing to opaque liquid sheet built-in only is that the height of interior dress body is lower and be difficult for becoming the sidepiece of ventilative obstacle, highly higher and become the inboard of ventilative obstacle and the outside and stop that the limit then can keep higher breathability.Therefore, do not damage aforesaid anti-seepage effect and just can keep higher breathability.

＜the ten five described invention of scheme 〉

According to the described disposable diaper of the 11 scheme, wherein,

Described exterior body is the waist portion of tubular, the waist portion of described tubular is made of the outer load of dorsal part of outer load of the veutro of the veutro in the waist that covers wearer and covering dorsal part, under the state that the upper end-face edge of load aligns outside the upper end-face edge of waist portion load outside veutro of described tubular and the dorsal part, engage by junction surface and to form 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

The leading section of described interior dress body is connected in the width central part inner surface of the outer load of described veutro, and is somebody's turn to do the width central part inner surface that the interior rearward end of adorning body is connected in the outer load of described dorsal part.

＜action effect 〉

Common Breeches type disposable diaper has: outer load, and it engages respectively by the both sides with the both sides of predecessor part and back body part and is formed with the junction surface in both sides, and forms waist opening portion and pair of right and left leg opening part; And interior dress body, the width central authorities of the inner surface of its load outside described are fixed on from veutro by between crotch and in the scope of dorsal part, pass waist opening portion and insert in the leg opening part and dress by the bipod that makes wearer.Interior dress body has: the liquid permeability surface patch; And be disposed at the outer surface side of this liquid permeability surface patch and the absorbent cores that forms by fiber assembly.As fiber assembly, be extensive use of by paper pulp fiber being amassed the fine fiber assembly that forms.

Kind with respect to the outer load of this use one has proposed outer load is divided into veutro and the two-part disposable diaper (for example with reference to patent documentation 7) that is also referred to as the type of being divided into two of dorsal part in recent years.In the disposable diaper of this type 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, shank passes easily so is convenient to dress (being convenient to dress) during wearing, is convenient to leg movements in the wearing process.

But, to adorn outside in the disposable diaper of the type that is divided into two, the degree of freedom owing to the area of pushing down shank outer load on every side narrows down around the shank increases, so exists shank to be easy to generate the problem in gap on every side.Therefore, as described in this programme, the preferred Breeches type disposable diaper of the type that is divided into two of adorning in addition is as object.

＜the ten six described invention of scheme 〉

According to the described disposable diaper of the 15 scheme, wherein,

Described absorbent cores has: leading section; Rearward end; And between leading section and rearward end and with leading section, compare the narrow portion of tightening up of width with rearward end,

Described front-end and back-end of tightening up portion are positioned at the position than side between the more close crotch in lower end of described waist portion,

50%～85% of the width that the described minimum widith that tightens up portion is described absorbent cores leading section and the width of absorbent cores rearward end,

The border of described installed inside part and described inboard ledge is configured to pass through the described portion of tightening up along fore-and-aft direction.

＜action effect 〉

Adorn in the disposable diaper of the type that is divided into two outside,, therefore, the fore-and-aft direction pars intermedia of absorbent cores is tightened up in order to improve to the fit around the shank because the shape of absorbent cores bring very big influence can for the degree of freedom of shank.

But if this portion of tightening up is set, then the degree of freedom around the shank can further increase, and is easy to generate the gap around shank.The aforesaid limit that stops is to the fit excellence around the shank, but particularly be provided with when tightening up the situation of portion at the absorbent cores place, by constituting as described in this programme, the inboard stops that the limit can erect passing through on the line of the portion of tightening up, so fit can obtain improving more significantly.

The invention effect

As mentioned above, can bring following advantage according to the present invention: absorbent cores is not yielding, in reducing outside dress body and outer load of veutro or the dorsal part load bonding come off or expose the danger etc. that hip etc. cause outward appearance and wearing feeling variation.

Description of drawings

Fig. 1 be illustrate disposable diaper inner surface, at the plane graph that launches under the state of diaper.

Fig. 2 be illustrate disposable diaper outer surface, at the plane graph that launches under the state of diaper.

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 cutaway view along the 5-5 line of Fig. 1.

Fig. 6 be only the major part of disposable diaper and size are together illustrated, at the plane graph that launches under the diaper state.

Fig. 7 is the cutaway view that only major part and the size of disposable diaper is together illustrated.

Fig. 8 is the front view of Product Status.

Fig. 9 is the rearview of Product Status.

Figure 10 be only the major part of another disposable diaper and size are together illustrated, at the plane graph that launches under the diaper state.

Figure 11 is the cutaway view of portion between crotch under the wearing state.

Figure 12 is the photo of conventional example.

Label declaration

10: interior dress body; 12: outer load; 12F: the outer load of veutro; 12B: the outer load of dorsal part; 13: the dorsal part main part; 14: the dorsal part extension; 15: the first elongate elastic telescopic parts; 16: the second elongate elastic telescopic parts; 20: interior dress body; 56: absorbent cores; 56F: absorbent cores leading section; 56B: absorbent cores rearward end; 56N: tighten up portion's (drawing together れ portion).

The specific embodiment

Below, the embodiment shown in further describes the present invention with reference to the accompanying drawings.

＜the first embodiment 〉

Fig. 1～Fig. 9 illustrates an example of Breeches type disposable diaper involved in the present invention.In the label of Fig. 1, " fore-and-aft direction " expression connects the direction of veutro and dorsal part, " width " expression and the orthogonal direction of fore-and-aft direction, " above-below direction " expression and the orthogonal direction of waist direction, in other words, expression links the direction of portion's side between the waist opening WO of portion side and crotch.

This Breeches type disposable diaper 10 is the disposable diaper of so-called pants type, the outer load 12F of veutro and being used for veutro of the waist that is used for covering wearer covers the outer load 12B of dorsal part of the dorsal part of waist, 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 12 that forms tubular by heat-sealing or ultrasonic fusing etc.Mode is such as shown, outside dorsal part load 12B than junction surface 12A more under the situation that downside extends, can in addition comprise processing such as implementing heat-sealing in the above-below direction scope of this part integratedly, thereby can extension weld portion 12E be set at dorsal part extension 14.Extend weld portion 12E by being provided with, can prevent that the second elongate elastic telescopic parts 16 described later of dorsal part extension 14 from pulling back.In this case, consider the damaged easness of sidepiece, usually junction surface 12A is made of the set of less weld portion, and form the low joint pattern of ratio of welding area among the 12A of junction surface, but owing to do not need to consider damaged easness at extension weld portion 12E, therefore, the ratio of welding area that also can be by making the welding pattern is than the height of junction surface 12A, thereby the second elongate elastic telescopic parts 16 are fixed in welding reliably.And, extend the edge part that weld portion 12E also can utilize the crooked line welding buttocks cover 14C of portion, prevent that the second elongate elastic telescopic parts 16 of the buttocks cover 14C of portion from pulling back.

And, in the leading section of dress body 20 be connected on the width central authorities inner surface of the outer load 12F of veutro in the waist portion 12 by hot-melt adhesive etc., and the rearward end of interior dress body 20 is connected on the width central part inner surface of load 12B outside the dorsal part by hot-melt adhesive etc., and outer load 12F of veutro and the outer load 12B side between crotch of dorsal part are left and discontinuous.This leaves distance Y can form about 150～250mm.

From Fig. 7 and Fig. 8 as can be known, the upper opening of waist portion 12 becomes the WO of waist opening portion that the waist for wearer passes, and the part of being surrounded by the lateral margin of the lower limb of waist portion 12 and interior dress body 20 respectively in the width both sides of interior dress body 20 becomes the leg opening part LO that passes for shank.Each junction surface 12A is peeled off and unfolded state under, be hourglass shape as shown in Figure 1.Interior dress 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 12 is parts of dress body 20 in supporting with respect to wearer.

(outer load)

Also as shown in Figure 4 and Figure 5, the outer load 12B of outer load 12F of veutro and dorsal part is pasted together by two sheet S1, S2 with non-woven fabrics etc. and forms, in order to improve fit, between two sheet S1, S2, be provided with elongate elastic telescopic parts 15～19 such as rubber covered wire with predetermined percentage elongation with respect to waist.Under the situation of using non-woven fabrics, preferably its basic weight is about 10～30g/m2.For non-woven fabrics, its raw fibre is what there is no particular determination.For example, olefines such as polyethylene or polypropylene, polyesters, synthetic fibers such as polyamide-based can example be shown, natural fibers such as regenerated fiber such as staple fibre or CUP, cotton etc. perhaps use two or more composite fibre in these fibers, composite fibre etc.In addition, non-woven fabrics can be the non-woven fabrics of making by any processing.As processing method, but for example illustration water outlet thorn (spunlace) method, spunbond (spunbond) method, hot rolling (thermalbond) method, melt and spray known methods such as (meltblown) method, acupuncture (needle-punched) method, hot blast (air through) method, sticking (point bond) method of point.And, as elongate elastic telescopic parts 15～18,19T, 19U, can use synthetic rubber, also can use natural rubber.For the stickup of two sheet S1, the S2 of each outer load 12F, 12B or be sandwiched in the fixing of two elongate elastic telescopic parts 15～19 between sheet S1, the S2, can use hot melt adhesion or heat-sealing or ultrasound wave bonding.If outer load 12F, the whole face of 12B firmly fixed then can damage the feel of sheet, not preferred therefore.Preferably with the combination of these parts, elongate elastic telescopic parts 15～19 are carried out firm bonding, and do not carry out bonding or gently more bonding to the part beyond the elongate elastic telescopic parts.

In more detail, the outer load 12B of dorsal part has: the dorsal part main part 13 that occupies the above-below direction scope identical with junction surface 12A; And the dorsal part extension 14 that extends to the downside of this dorsal part main part 13.Dorsal part 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 dorsal part extension 14 can suitably determine, in illustrated example, extend to the downside of dorsal part main part 13 with the width identical with dorsal part main part 13 upper end of dorsal part extension 14, and its downside is along with near side narrowed width between crotch.The part identical with dorsal part 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 is easy to cover buttocks.

The size of dorsal part extension 14 can suitably be determined, but as shown in Figure 6, more preferably the width length 14x of the 14C of buttocks cover portion (the edge 14e in the width of the buttocks cover 14C of the portion outside 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 when the wideest determined tetragonal area in position be made as S at position the wideest on the width of dorsal part extension 14 with on above-below direction, if the area of dorsal part extension 14 with respect to S be about 20%～80%, particularly about 40%～60% o'clock, then the outward appearance of buttocks and wearing sense are excellent, are preferred therefore.

Dorsal part main part 13 above-below direction conceptive can be divided into upper part (waist) W and than the upper part by the lower portion U of downside, its scope is according to the size of product and difference, and the above-below direction length that the above-below direction length that generally can establish upper part W is 15～80mm, set side part U is 35～220mm.

In the W of the upper part of dorsal part main part 13 (waist), be fixed with many dorsal part waist elasticity extensible members 17 in successive mode on whole width, described many dorsal part waist elasticity extensible members 17 are being fixed under the state of width elongation along the above-below direction devices spaced apart and with the predetermined elongation rate.And, in the dorsal part waist elasticity extensible member 17 be equipped on one or more dorsal part waist elasticity extensible member 17 in the zone of the lower portion U adjacency of dorsal part main part 13 can be overlapping with absorbent cores 20, and also can be separately positioned on except with absorbent main body 20 eclipsed width middle bodies the width both sides.As this dorsal part waist elasticity extensible member 17, preferably be about 155～1880dtex (dtex), particularly about 470～1240dtex (elastomeric situation with thickness.Under the situation of natural rubber, sectional area is about 0.05～1.5mm ², about 0.1～1.0mm particularly ²) rubber covered wire, with the interval of 4～12mm, respectively with about 150%～400% percentage elongation, particularly fixing about 3～22 of about 220%～320% percentage elongation.And it is identical thickness and percentage elongation all that dorsal part waist elasticity extensible member 17 does not need, and for example also can make the thickness of elastic telescopic parts different in the upper and lower of dorsal part waist with percentage elongation.Haveing nothing to do of the thickness of this dorsal part waist elasticity extensible member 17 or the size of percentage elongation and the first and second elongate elastic telescopic parts 15,16, can freely determine.

And, in the lower portion U of dorsal part 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 in successive mode on whole width, described many first elongate elastic telescopic parts 15 are being fixed under devices spaced apart and the state with the elongation of predetermined elongation rate broad ways along the vertical direction.

As the first elongate elastic telescopic parts 15, preferably be about 155～1880dtex, particularly about 470～1240dtex (elastomeric situation with thickness.Under the situation of natural rubber, sectional area is about 0.05～1.5mm ², about 0.1～1.0mm particularly ²) rubber covered wire, with the interval of 1～15mm, particularly with the interval of 3～8mm, respectively with about 200%～350% percentage elongation, particularly fixing about 5～30 of about 240%～300% percentage elongation.

In addition, in dorsal part 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 go up successive mode at whole width (the whole at least buttocks cover 14C of portion), described many second elongate elastic telescopic parts 16 are being fixed under devices spaced apart and the state with the elongation of predetermined elongation rate broad ways along the vertical direction.

As the second elongate elastic telescopic parts 16, preferably be about 155～1880dtex, particularly (elastomeric situation about about 470～1240dtex with thickness.Under the situation of natural rubber, sectional area is about 0.05～1.5mm ², about 0.1～1.0mm particularly ²) rubber covered wire, with the interval of the interval of 5～40mm, particularly 5～30mm, be more preferably the interval of 5～20mm, respectively with 150%～300% percentage elongation, particularly fixing about 2～10 of 180%～260% percentage elongation.

On the other hand, the outer load 12F of veutro only is made of the dorsal part main part 13 essentially identical veutro main parts (occupying the part of the above-below direction scope identical with junction surface 12A) with the outer load 12B of dorsal part, be along the waist direction extend rectangular-shaped, do not have the outer such dorsal part extension 14 of load 12B of dorsal part.

Promptly, among upper part (waist) W and lower portion U of load outside veutro (veutro main part) 12F, in the W of upper part, be fixed with many veutro waist elasticity extensible members 18 in successive mode on whole width, described many veutro waist elasticity extensible members 18 are being fixed under devices spaced apart and the state with the elongation of predetermined elongation rate broad ways along the vertical direction.For this veutro waist elasticity extensible member 18, preferably make its radical, thickness, percentage elongation, interval and above-below direction configuration as far as possible near dorsal part waist elasticity extensible member 17, but also can be different with it, under the situation different with it, the difference of radical is below 10, is preferably below 5, the difference of thickness is below the 1880dtex, is preferably below the 470dtex, and the difference of percentage elongation is below 100%, is preferably below 40%, and difference at interval is below the 10mm, is preferably below the 5mm.

And, among the lower portion U of load 12F outside veutro (veutro main part), except with absorbent main body 20 eclipsed width central parts, each position of side and width both sides thereon, be fixed with many 3rd elongate elastic telescopic parts 19 in successive mode on whole width, described many 3rd elongate elastic telescopic parts 19 are being fixed under devices spaced apart and the state with the elongation of predetermined elongation rate broad ways along the vertical direction.The above-below direction of the 3rd elongate elastic telescopic parts 19 sets the part that scope can be a lower portion, but is preferably whole lower portion (to the scope of whole lower portion effect contractility) in fact.

As the 3rd elongate elastic telescopic parts 19, preferably make its radical, thickness, percentage elongation, interval and above-below direction configuration as far as possible near the first elongate elastic telescopic parts 15, but also can be different with it, under the situation different with it, the difference of radical is below 10, is preferably below 5, the difference of thickness is below the 1880dtex, is preferably below the 470dtex, and the difference of percentage elongation is below 100%, is preferably below 40%, and difference at interval is below the 10mm, is preferably below the 5mm.

Though the outer load 12F of the veutro in the illustrated embodiment only is made of the part that occupies the above-below direction scope identical with junction surface 12A, but also can be same with the outer load of dorsal part, constitute by the veutro main part that occupies the above-below direction scope identical with to the veutro extension that the downside of this veutro main part extends with junction surface 12A.Thus, shape around the shank of the outer load 12F of veutro can be formed fit shape along pars inguinalis.In this case, the area of veutro extension be preferably the dorsal part extension area 10%～80%, be more preferably 20%～50%.If the veutro extension is excessive, impair fit on the contrary, not preferred therefore.

On the other hand, as shown in the figure, if except with absorbent main body 20 eclipsed width central parts, be respectively arranged with first in the width both sides, the second and the 3rd elongate elastic telescopic parts 15,16 and 19, dress body and outer load are difficult for peeling off then, therefore be preferred, but in this mode except the elastic telescopic parts exist only in the mode of width both sides, also comprise following mode: the constituting of this mode, the elastic telescopic parts cross absorbent main body 20 and are present in from its width one side to opposite side, but be cut off with absorbent main body 20 eclipsed width central part elastic telescopic parts, thereby making contractility inoperative (be equal in fact the elastic telescopic parts are not set).And, the also mode that can all play a role on the whole width of dorsal part main part 13 and dorsal part extension 14 with contractility is crossed part or all of first, second and the 3rd elongate elastic telescopic parts 15,16 and 19 absorbent main body 20 and is set to opposite side from its width one side.

(interior dress body)

Interior dress body 20 can adopt shape arbitrarily, but is rectangle in illustrated mode.As shown in Figure 3, interior dress body 20 comprises: the surface patch 30 of bodyside; Opaque liquid sheet 70; And be located in absorptive unit 50 between surface patch 30 and the opaque liquid sheet 70.The rear side of opaque liquid sheet 70 also can with the whole back side of dress body 20 in covering or with the mode that covers the entire portion of exposing between the load 12B outside the load 12F and dorsal part outside the veutro to crotch between outside the portion load 12M fix.And, promptly shift in order to make the liquid that sees through surface 30 to absorptive unit 50, intermediate (second) 40 can be set between surface patch 30 and absorptive unit 50.In addition, leak in the both sides of absorbent portion 20, can be provided with in the both sides of interior dress body 20 towards what bodyside erected and stop limit 60,61 in order to prevent Excreta.In addition, though diagram not, each component parts of interior dress body 20 can interfix by whole (バ タ) coating, wire (PVC one De) coating or the spiral coating etc. of hot-melt adhesive etc.And interior dress body 20 also can use machanical fastener or adhesives to be installed on outer load 20 in loading and unloading mode freely.

In addition, in the width both sides of interior dress body 20, particularly in outside the dress width both sides of the edge of body 20 and the veutro near the intersection point of the lower edge of load 12F and outside the width both sides of the edge of interior dress body 20 and the dorsal part near the intersection point of the lower edge of load, if the rigidity of interior dress body 20 (rigidity) is 15～50cN/50mm, be preferably 10～35cN/50mm, the integral body that stops limit 60,61 that then aftermentioned is such erects shape can be further stable, so effect is more remarkable.On the other hand, for remainder, for example the width pars intermedia is considered flexibility, and rigidity is reduced to 5～35cN/50mm, preferably is reduced to 20～25cN/50mm.In addition, for improving inflexible scope, on the width preferably from the width both side edges of interior dress body 20 in the scope of center side 5～30mm, in front and back upwards preferably outside interior dress body 20 and veutro outside load 12F, the dorsal part intersection point of load 12B forwards, backwards direction separately 50mm with interior (not comprising the multiple part of the 56N of the portion of tightening up) with absorbent cores 56.

(implosion test)

Rigidity (rigidity) utilizes following method to measure based on JIS K 7171 standards (test method of plastics-bending rigidity).In the mensuration, use tensile testing machine (Tensilon tester) (the radius of curvature R 1=5.0 of pressure head leading section ± 0.1mm, the radius of curvature R 2=5.0 of gripper shoe leading section ± 0.2mm), internally adorn the bending rigidity of the product fore-and-aft direction of body 20 and measure.Make test film by the following method: from interior dress body 20, remove the elastic telescopic parts that influence is measured, and adorn the rectangle that body 20 is cut into diaper length direction 80mm, diaper width 50mm in will being somebody's turn to do.50mm in the unit of bending rigidity value is the length of the minor face of test film, the width of the test film that the pressure head when being test bends.A pair of support chip has the leading section of circular section respectively, interval between the front end of two leading sections (upper end) is made as 50mm, and be arranged to be parallel to each other and the height and position alignment of two leading sections, above-mentioned test film is positioned on the described a pair of support chip to set up mode, and the length direction of this test film towards with the orthogonal direction of each gripper shoe, and to dispose the pressure head leading section with mode that this test film contacts a little.In loading is that 5kg (scope is 196cN), speed are that pressure head is descended, thereby draws load-deflection curve.With the maximum of resulting flexural stress as bending rigidity value (cN/50mm).In addition, under the situation of size, measure, and calculate according to the dimension scale passing ratio and to convert with the test film of small dimension less than above-mentioned sample as the position of determination object.

(surface patch)

Surface patch 30 has the character that liquid is seen through.Therefore, the raw material of surface patch 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 determination.Olefines such as polyethylene or polypropylene, polyesters, natural fibers such as regenerated fiber, cotton such as synthetic fibers, staple fibre or cuprammonium (cupra) fiber 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, can for example known methods such as water acupuncture manipulation, spun-bond process, hot rolling method, meltblown, needle point method, hot blast method, the sticking method of point be shown example.If for example seek flexibility, drapability, then preferred spunbonded method, water acupuncture manipulation become big, flexibility if seek volume, then preferred hot blast method, the sticking method of point, hot rolling method.

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

Stop in setting under the situation on limit 60,61, the both sides of surface patch 30 are preferably passed opaque liquid sheet 70 and are stopped between the limit 60,61 and around the dorsal part to absorptive unit 50, and, preferably surface patch 30 is adhered to opaque liquid sheet 70 and stops limit 60,61 by hot-melt adhesive in order to prevent liquid infiltration.Thus, also can be improved in the inflexible effect of both sides of dress body 20.

(intermediate)

Promptly to shift in order making, penetration speed specific surface sheet 30 intermediates 40 fast, that be commonly called " second " of liquid can be set to absorbent cores through the liquid behind the surface patch 30.This intermediate 40 not only can make liquid promptly shift and improve absorbent properties based on absorbent cores to absorbent cores, and can prevent the liquid that absorbed phenomenon from absorbent cores " (backflow) flows backwards ", make to be in dry status on the surface patch 30 all the time.Intermediate 40 also can omit.

As intermediate 40, can example illustrate the raw material identical or spun-laced nonwoven fabric, spun-bonded non-woven fabrics, SMS non-woven fabrics, paper pulp non-woven fabrics, paper pulp and staple fibre with surface patch 30 mixing tab, put bonded non-woven fabrics or crepe paper.Particularly hot-wind nonwoven cloth because volume is big, is preferred therefore.Preferably use the composite fibre of core sheath structure (core sheath structure) in hot-wind nonwoven cloth, the resin that core adopted under this situation can be polypropylene (PP), but the preferred high polyester (PET) of rigidity.The weight of fiber is preferably 20～80g/m on the unit are ², 25～60g/m more preferably ²The thickness of the raw fibre of non-woven fabrics is preferably 2.2～10dtex.In order to make the non-woven fabrics volume big,, preferably use core not at the fiber of core shift fiber type, doughnut, core shift and the hollow of central authorities as all or part of composite fibre of raw fibre.

The intermediate 40 of diagramatic way is narrower and be configured in central authorities than the width of absorbent cores 56, but also can be provided with at whole width range.The length direction length of intermediate 40 can be identical with the length of absorbent cores 56, also can be in the short length range that with the reception region of fluid is the center.If with intermediate 40 from the width sidepiece around going into to the rear side of absorbent cores 56, and be adhesively fixed by hot-melt adhesive etc., then in the rigidity of both sides of dress body 20 improve.The representational raw material of intermediate 40 is non-woven fabrics of the permeability excellence of liquid.

(opaque liquid sheet)

The raw material of opaque liquid sheet 70 does not have particular restriction, for example can example illustrate: olefine kind resins such as polyethylene or polypropylene; Nonwoven layer is stacked in the stacked non-woven fabrics that forms on polythene strip etc.; Thereby and be folded with 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 olefine kind resins such as polyethylene or polypropylene, by obtaining along single shaft or biaxially oriented stretching.In addition, as opaque liquid sheet 70, can also adopt the sheet with opaque liquid that does not use waterproofing membrane, this is adopted following method and makes: the nonwoven cloth material that uses fento degree (micro denier) fiber; By applying the anti-leakage intensive treatment that heat or pressure dwindle the gap of fiber; Coating super absorbent resin or hydrophobic resin; Perhaps apply waterproofing agent.

In order to improve anti-leakage, opaque liquid sheet 70 is preferably walked around the both sides of absorptive unit 50 and is extended to the surface patch 30 lateral both sides of absorptive unit 50.Thus, also can be improved in the inflexible effect of both sides of dress body 20.For this extension, suitable width is distinguished about 5～20mm about being.

And, also can on the inner surface of opaque liquid sheet 70 or outer surface, implement by printing and the painted pattern that forms.In addition, also can the outside of opaque liquid sheet 70 paste and crotch between the outer load 12M of portion for divide body component, implemented to print or painted pattern segments.In addition, also can be provided with owing to absorb liquid component and make the drainage indicator 80 that color changes in the inboard of opaque liquid sheet 70.

(absorptive unit)

Absorptive unit has: absorbent cores 56; And the back side at least and the lateral covering piece 58 that coat this absorbent cores 56.Covering piece 58 also can omit.

(absorbent cores)

Absorbent cores 56 can be made of the aggregation of fiber.As this fiber assembly, except short fibers such as continuous official form for filing a lawsuit slurry or synthetic fibers being amassed the aggregation that fibre forms, also can use as required and the tow (fibre bundle) of synthetic fibers such as Dichlorodiphenyl Acetate cellulose is opened fibre and long filament (filament) aggregation that obtains.As the weight of fiber on the unit are,, for example can be about 100～300g/m in that continuous official form for filing a lawsuit slurry or short fiber are amassed under the fine situation ², under the situation of long filament aggregation, for example can be about 30～120g/m ²Fineness under the situation of synthetic fibers (fineness) is 1～16dtex for example, is preferably 1～10dtex, is more preferably 1～5dtex.Under the situation of long filament aggregation, long filament can be a uncrimped fibers, but is preferably crimped fibre.The crimpness of crimped fibre for example is about 5～75 an of per inch, is preferably about 10～50, is more preferably about 15～50.And, use the crimped fibre that curls equably under the situation mostly.Preferably in absorbent cores 56, disperse to maintain the superabsorbent polymer particle.

(superabsorbent polymer particle)

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

As superabsorbent polymer, can use with antibiotic substance the superabsorbent polymer after integrated.The preferred especially antibacterial and deodouring superabsorbent polymer particle that forms by the following method: make and contain zeolite particles (below be referred to as the antibacterial and deodouring zeolite) in the superabsorbent polymer, this zeolite particles by utilize can carry out in the silver ion displacement zeolite ion exchange ionic part or all form; Perhaps make the surface of antibacterial and deodouring zeolite particles attached to the superabsorbent polymer particle by static.

As the superabsorbent polymer particle, 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 absorbent cores 56 return absorbent cores 56 outsides and " flow backwards ".

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

The weight of the superabsorbent polymer particle on the unit are can suitably be determined according to the desired absorbtivity of the purposes of this absorbent cores 56.Therefore cannot treat different things as the same, can be 50～350g/m ²If the weight of polymer is 50g/m on the unit are ²Below, then becoming is difficult to guarantee absorbtivity.If surpass 350g/m ², then effect can be saturated.

If desired, can regulate distribution density or the dispersion volume of superabsorbent polymer particle on the in-plane of absorbent cores 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, for men's diaper, can improve the distribution density (amount) of front side, for lady's diaper, can improve the distribution density (amount) of central part.And, also can on the in-plane of absorbent cores 56, (for example be point-like) partly the part that does not have polymer is set.

(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 expectation unit are is 5～40g/m ², 10～30g/m particularly ²

For this covering piece 58, as shown in Figure 2, except the mode that coats whole absorbent cores 56, also can only coat the back side and the side of this layer.And, though do not illustrate, can be following manner etc. also: utilize crepe paper or non-woven fabrics only to cover the upper surface and the side of absorbent cores 56, and utilize the mode of opaque liquid sheet covering lower surfaces such as polyethylene; And cover the upper surface of absorbent cores 56, and utilize opaque liquid sheet such as polyethylene to cover the mode (described various raw materials become the formation unit of covering piece) of side and lower surface with crepe paper or non-woven fabrics.If desired, also can be that two synusia clip the mode of absorbent cores 56 or absorbent cores 56 only is configured in the mode of lower surface about utilizing, but, therefore not be the mode of expectation owing to be difficult to prevent that superabsorbent polymer is particle migration.

(between crotch outside the portion load)

Be provided with in the rear side of interior dress 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 the raw material etc. that also can use more high-intensity raw material or contain deodorizer is different from the raw material of load 12F and the outer load 12B of dorsal part veutro outside.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 material that deodorizer etc. forms etc.

When being seated, can apply bigger 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.

Particularly, the thickness of fiber is preferably 1.1～5.5dtex, the spun-bonded non-woven fabrics that optimum fiber bonds together by hot pressing (hotembossing), SMS non-woven fabrics and some bonded non-woven fabrics, perhaps hot-wind nonwoven cloth of bonding together by hot blast (heated air) of fiber etc., if use these non-woven fabrics, fiber each other bonding firmly, therefore can obtain the evaluation of " ◎ " or " zero " usually.On the other hand, then mostly be " △ " or " * " for constituting thinner melt spraying non-woven fabrics or the not bonding each other spun-laced nonwoven fabric of fiber of fiber, estimating.For fear of the non-woven fabrics fluffing, in the manufacturing process of non-woven fabrics, push nonwoven surface by level and smooth pressure roller, perhaps improve hot pressed temperature and pressure, the temperature that perhaps improves hot blast gets final product.

(abrasion resistance test)

Abrasion resistance utilizes following method to measure based on 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 interior dress body) of sheet.In the mensuration of abrasion resistance, can use for example COLORFASTNESS RUBBING TESTER (the AB-301 type that TESTER Industry Co., Ltd makes).Mensuration is to use frictional testing machine II type to apply 50 vibrations to carry out.The mensuration that is obtained by result of the test that detects by an unaided eye compares with sheet and with itself and limit sample, at { ◎: not balling-up (I れ jade), phozy; 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 use flexible non-woven fabrics as load 12M outside the portion between crotch, and its elongated lengthwise along interior dress body 20 is pasted, then the fit of portion improves between crotch, is preferred therefore.

If with load 12M outside the portion between crotch from the width sidepiece around to the health side, and it is adhesively fixed on the outer surface that stops limit 62 by hot-melt adhesive etc., then in the rigidity of both sides of dress body 20 improve.In this mode, preferably between crotch, use the high sheet of rigidity (stiffness) outside the portion among the load 12M.Particularly, can use the bending resistance degree measured by Clarke method of testing (JISL 1096C method) the MD of sheet direction (vertically) and CD direction (laterally) and as 100mm more than, be preferably the sheet more than the 150mm.

In illustrated example, load 12F, 12B and interior dress body 20 eclipsed parts outside veutro and dorsal part, between dress body 20 and veutro and dorsal part outer load 12F, the 12B, still also can stick on the outside of outer load 12F, 12B of veutro and dorsal part in load 12M is clipped in outside the portion between crotch.In load 12M sticks on by hot-melt adhesive etc. outside the portion between crotch on the inner surface or outer surface of the back side of dress body 20 and veutro and dorsal part outer load 12F, 12B.

(stopping the limit)

Stopping limit the 60, the 61st, in the upwardly extending strip-shaped parts in whole front and back, and is in order to stop urine or the soft stool that laterally moves and prevent transverse leakage and the parts that are provided with on surface patch 30 along the both sides of interior dress body 20.

In the present embodiment, as shown in Figure 3 and Figure 4, each side is provided with in double-deck mode and stops limit 60,61 about interior dress body 20.Under the state that launches diaper, as shown in the figure, the inboard stops that limit 61 is parts that the sidepiece from interior dress body 20 erects obliquely to the width center side, the outside stops that limit 60 is arranged in the width outside that the inboard stops limit 61 and erects from the sidepiece of interior dress body 20, the part of its root side erects obliquely towards the width center side, and the part of its front erects towards the width outside more obliquely than pars intermedia.In addition, also can be different with diagramatic way, outside only being provided with and inboard stops any in the limit 60,61.

In more detail, the inboard stops that limit 61 forms by the following method: be folded into two parts thereby will have to turn back along width with the banded barrier sheet 62 of the length of the fore-and-aft direction equal in length of interior dress body 20, and turning back between part and near the sheet it, along the width devices spaced apart and with the fixing a plurality of elongate elastic telescopic parts 63 of the state of elongation alongst.Elongate elastic telescopic parts 63 are not fixed with respect to barrier sheet 62 pro-rearward end, and are fixed to stop the elastic mode in limit at pars intermedia.As barrier sheet 62, can preferably use softness and uniformity and disguised excellent non-woven fabrics etc. such as spun-bonded non-woven fabrics (SS, SSS etc.) or SMS non-woven fabrics (SMS, SSMMS etc.), melt spraying non-woven fabrics, as required these non-woven fabrics are utilized enforcement water-proofing treatment such as silicon, the weight of the fiber on the unit are is preferably about 10～30g/m ²As elongate elastic telescopic parts 63, can use rubber covered wire etc.Under the situation of using spandex rubber covered wire (spandex rubber threads), the thickness of rubber covered wire is preferably 420～1120dtex, 620～940dtex more preferably.Gu periodic percentage elongation is preferably 150%～350%, more preferably 200%～300%.In addition, though do not illustrate, but also can set up defences that will to be folded into the lap of two-part barrier sheet 62 bonding for water thin film or whole the coating (slit coating (slot coating)) by hot-melt adhesive being folded between the two-part barrier sheet 62 folder, thereby prevent that liquid component from oozing out.Ask under the condition at this, the coating amount of hot-melt adhesive is preferably 5g/m ²More than.In addition, to stop that the limit can be seen and remain on the Excreta that stops the inboard, limit in order to stop to see through, to stop that limit (duplexer) preferably constitutes: the air permeability of measuring based on JIS L 1096 is at 50cc/cm ²More than the sec, particularly preferably at 100cc/cm ²The opacity that sec is above, measure based on JIS P 8138 40% or more, particularly preferably at the water pressure resistance of measuring more than 50%, based on JIS L 1192A method at 150mmH ₂More than the O, particularly preferably at 200mmH ₂More than the O.

The elongate elastic telescopic parts 63 preferred leading sections on limit 61 that stop in the inboard dispose 1～2, if the pars intermedia between leading section and base end part also disposes 1～2 elongate elastic telescopic parts 63, then are more preferably.If have elongate elastic telescopic parts 63, then easily contact skin with face at the range content that spreads all over leading section as fulcrum from pars intermedia at pars intermedia.The allocation position of the elongate elastic telescopic parts 63 of pars intermedia preferably stops 30%～70% scope of the height (the width length of ledge) on limit 61 in the inboard.For the infant diaper, the inboard stops that the height on limit 61 is preferably about 15～35mm, so the configuration scope of elongate elastic telescopic parts 63 is preferably from front end to the position of base end side 5～25mm, the position of 12～18mm more preferably.The leading section and/or the pars intermedia that stop limit 61 in the inboard are provided with respectively under the situation of elongate elastic telescopic parts 63 abreast, and the configuration space 61d of elongate elastic telescopic parts 63 is preferably 2～10mm, 2～6mm more preferably.

And, the inboard stop in the limit 61 on width with the end of fold back portion opposition side form be fixed in mounting portion (installed inside part) 65 in the scope from the surface to the back side of dress body 20 sidepieces, part beyond this mounting portion 65 forms the 65 ledge 66 (parts of fold back portion side of giving prominence to from the mounting portion, be equivalent to inboard ledge), wherein, fore-and-aft direction both ends in this ledge 66 utilize hot-melt adhesive or heat-sealable way to be fixed on the surface of surface patch 30 by front and back fixed part 67, the fore-and-aft direction pars intermedia forms loose free part (inboard free part), is fixed with elongate elastic telescopic parts 63 along fore-and-aft direction in this freedom part with elongation state.

The outside stops that limit 60 also has with the inboard and stops limit 61 essentially identical structures, its mounting portion but (mounting portion, the outside) 68 stops that with the inboard limit 61 is different in the following areas: interior dress body 20 rear side, be positioned at stop limit 61 than the inboard mounting portion 65 by the width center side, the outer surface that the inboard stops limit 61 is fixed in this mounting portion 68; Fore-and-aft direction both ends in the ledge (outside ledge) 69 partly are made of root side part and front, described side part extends to the surface that the inboard stops the fore-and-aft direction both ends of the inboard ledge 66 the limit 61 from mounting portion 68 by the sidepiece of interior dress body 20, and be fixed in the surface at the fore-and-aft direction both ends of inboard ledge 66, described front part is turned back to the width outside from the front end of this root side part, and is fixed on the root side part; And the configuration of elongate elastic telescopic parts 63 and radical etc.

Yet, stop limit 61 for the inboard, also can adopt the structure that the leading section of inboard ledge is folded to the width outside, particularly, if stop below 1/2, of height (the width length of ledge) on limit 61 in the inboard preferably below 1/3, then also can stop that the limit is the same, adopt the front end sidepiece is folded to the width outside and is fixed in root side part with the outside.

Be arranged at the outside and stop that the free partly radical of the elongate elastic telescopic parts 63 of (the free part in the outside) on limit 60 is preferably 2～6, more preferably 3～5.Configuration space 60d is that 3～10mm is comparatively suitable.If constitute like this, then contact skin with face easily in the scope that has disposed elongate elastic telescopic parts 63.Be not only front, also can dispose elongate elastic telescopic parts 63 in the root side.Be configured in the outside and stop that the thickness and the percentage elongation of the elongate elastic telescopic parts 63 on limit 60 stop that with the inboard limit 61 is as the criterion, but thickness is preferably with the inboard and stops the identical of limit 61 or stop the thick of limit 61 than the inboard, and percentage elongation is preferably with the inboard and stops the identical of limit 61 or stop the low of limit 61 than the inboard.

And, the fore-and-aft direction length of the front and back fixed part 67 of ledge 66,69 is preferably formed to the inboard stops the limit 61 and the outside and stops that limit 60 is identical, perhaps stop that than the outside limit 60 is short, the fore-and-aft direction regular length that stops the elongate elastic telescopic parts 63 in the limit 60,61 is preferably formed to the inboard stops the limit 61 and the outside and stops that limit 60 is identical, perhaps stops that than the outside limit 60 is long.The border of mounting portion 65 and ledge 66 also can be positioned at the outside and stop that limit 60 stops position identical on the limit 61 with the inboard, the width center side is left on the inboard border on limit 61 that stops more but the preferred outside stops the border ratio on limit 60, and it leaves distance preferably in 10mm.

Stop in the outside that preferably the edge part of ledge 66,69 sides in limit 60 and the inboard mounting portion 68,65 that stops limit 61 forms the root fixed part of wire by hot-melt adhesive or heat-sealing.And other fixed parts can use hot-melt adhesive etc. to fix with suitable pattern.The root fixed part of the wire in the installed inside part 65 is preferably placed at lateral margin from the face side of interior dress body 20 to width center side 3～20mm, be preferably the scope of 5～10mm especially.And the root fixed part on the line in the installed inside part 65 preferably disposes to pass through the mode that stops limit 61 and tighten up the 50N of portion.In addition, the root fixed part on the line in the mounting portion, the outside 68 is preferably placed at lateral margin from the rear side of interior dress body 20 to width center side 5～30mm, be preferably the scope of 10～20mm especially.In this case, to stop that the limit turns back and fixing to face side, this in fact only is fixing fore-and-aft direction both ends, therefore between the crotch that the restriction by 67 pairs of width center side of front and back fixed part does not play one's part to the full in the portion, the outside stops that limit 60 and inboard stop that limit 61 all erects towards the width outside, and 61 formed pocket portions (pocket) broaden thereby the inboard stops the limit.In addition, if the outside stops that limit 60 and inboard stop that the configuration sized of the root fixed part on limit 61 breaks away from above-mentioned scope, stop that the width W 7 at face side position of interior dress body 20 of mounting portion 65 on limit 61 is too short if for example be fixed with the inboard, then the inboard and the outside stop 61,60 on limit erect from interior dress body 20 both sides erect highly can step-down, be not preferred therefore.If it is long, then stop in the limit 61 in the inboard, the width of the part that is used to absorb in the surface patch 30 can narrow down, therefore not preferred, but stop in the limit 60 in the outside, but having the advantage that broadens in the formed pocket of the rear side of interior dress body 20 portion, also can be more than the 30mm under the degree of not damaging the stability that erects therefore.

According to circumstances, (particularly, from lateral margin along width 0～5mm, be preferably the position of 0～3mm) or rear side in the root fixed part of the wire in the installed inside part 65 is preferably placed near the sidepiece of face side of dress body 20.If the root fixed part of wire is located at face side surpasses 5mm from lateral margin along width position, stop in the portion between crotch that then the limit also erects towards the width center side, formed pocket portion can narrow down thereby the inboard stops limit 61, is not preferred therefore.Be positioned under the situation of rear side, be suitable from the position of the lateral margin 0～20mm of interior dress body 20, but also can be positioned at position above 20mm.

The outside and the inboard fixed object that stops the mounting portion 68,65 on limit 60,61 can be suitable parts such as the surface patch 30, liquid impermeability sheet 70, absorptive unit 50 in the interior dress body 20, can also via any one party stop the limit with the opposing party stop the limit be fixed on the dress body 20.

Stop in the limit 60,61 in the outside and the inboard that constitute like this, the contractility of elongate elastic telescopic parts 63 is so that the approaching mode effect in fore-and-aft direction both ends, but because the fore-and-aft direction both ends in the ledge 66,69 are fixed in the mode that does not erect, and form loose free part between these both ends, therefore as shown in figure 11, only free part erects towards the mode of bodyside with butt.Particularly 68,65 outsides of rear side that are arranged in dress body 20 stop limit 60 in the mounting portion, portion between crotch and near to erect towards the open mode in the width outside, therefore the outside stops that limit 60 can be with around the face butt shank.On the other hand, between crotch in the both sides, front and back of portion (abdominal part and back), fixed part 67 limits the outside and inboard stop that limit 60,61 do not open outside width before and after utilizing, so the inboard stops limit 61 high erecting, and the outside stops that the latter half on limit 60 erects too, therefore can prevent from reliably to leak from interior dress body 20 both sides at abdominal part and back.In addition, because the front and back fixed part 67 in the inboard ledge 66 that stops limit 61 is not turned back, and the outside stops that the front and back fixed part 67 in the ledge 68 on limit 60 outwards turns back, and therefore the outside and the inboard free section separately, limit 60,61 that stops can erect with the state that leaves between dividing.

And, be characterised in that, the inboard stops that the installed inside part 65 on limit 61 is positioned at the surperficial both sides of dress body 20, the border that becomes the installed inside part 65 that erects starting point and inboard ledge 66 is left to the width center side from the lateral margin of interior dress body 20, therefore stop limit 60 by the outside and inboard, the contractility of 61 elastomeric element 63, not only the outside and inboard stop limit 60,61 erect towards bodyside, and more also erecting in the interior dress body 20 towards bodyside by the sidepiece 20s in the width outside than inboard ledge 66, thereby should stop limit 60 in the outside and inboard by the interior sidepiece 20s that adorns body 20, play a role as intermediary stopping between 61, and performance is as the outside and inboard are stopped limit 60,61 maintain the effect of the sept (spacer) of the state of leaving.Consequently, the outside and inboard stop limit 60,61 non-overlapping copies and erect with the interval of broad is fitted in around the shank anti-leakage excellence respectively.

Also can stop limit 60 with the outside and inboard, 61 is the same, by along the lateral margin of interior dress body 20 with elongation state elongate shape elastomeric element, in also can making the both sides 20s of dress body 20 as form at leading section thin folds in a garment (fold) and erect the 3rd stop the limit and erect, but compare with it, such elastomeric element is not set and utilizes the outside and inboard to stop limit 60,61 the effect that erects, then both sides 20s can lift more naturally, and folds in a garment becomes big and then stops limit 60 as outside making and inboard, the sept of 61 non-overlapping copies plays a role easily, is preferred therefore.

The size that stops limit 60,61 can suitably be determined, but use under the situation of diaper at infant, for example shown in Figure 7, the inboard stop limit 61 to erect height (the width length of the ledge 66 under the deployed condition) W5 be 10～50mm, be preferably 10～45mm, be preferably 15～35mm especially, the outside stops that height (the width length of the ledge 69 under the deployed condition) W6 that erects on limit 60 is 15～60mm, is preferably 20～40mm especially.And, the inboard is being stopped the distance W 4 of leaving that limit 61 is set level between the front end under the state on surface patch 30 surfaces is 60～170mm, is preferably 70～120mm especially.In addition, make the outside stop limit 60 and the surperficial parallel of surface patch 30 and flatly fold after state under, the distance W 3 of leaving that is positioned between the most inboard broken line is 60～190mm, is preferably 70～140mm especially.

On the other hand, as previously mentioned, under the situation that opaque liquid sheet 70 is walked around from the both sides of absorptive unit 50, preferred opaque liquid sheet 70 is walked around the width both sides of absorptive unit 50 and is extended to and be positioned at the installed inside part 65 of surface patch 30 sides of absorptive unit 50 and the corresponding position, border of inboard ledge 66.Stop a small amount of Excreta on limit 61 for crossing the inboard, can be by stopping that in the inboard and the outside both sides 20s of the interior dress body 20 that lifts between the limit 61,60 stops, therefore as mentioned above, by the built-in opaque liquid sheet 70 of face side, cross a small amount of Excreta urine that the inboard stops limit 61 or the moisture of soft stool oozes out thereby can stop effectively at the interior dress side 20s of portion.And, utilized as the employed opaque liquid sheet 70 of the rear side parts of interior dress body 20, so the increase of material cost is less, can also avoid production process complicated.

And, ask under the condition at this, be more preferably and adopt following structure: the width W 5 of inboard ledge 66 is greater than the width W 7 at the face side position that is fixed with installed inside part 65 of interior dress body 20, in the root side part of outside ledge 69, under the diaper deployed condition, be positioned at the width W 8 of the part of the face side of adorning body 20, front width W 9 sums partly with outside ledge 69, greater than the width W 7 at the face side position that is fixed with installed inside part 65 of interior dress body 20, and stop that in the inboard limit 61 and the outside stop not built-in opaque liquid sheet 70 in the limit 60.In this structure, owing to built-in opaque liquid sheet 70 cause breathability low only be sidepiece 20s interior dress body 20, highly lower and difficult obstruction breathability, highly higher and become the inboard of gas-pervious obstacle and the outside and stop that limit 61,60 then can keep higher breathability.Therefore, above-mentioned anti-seepage effect can be do not damaged, just higher breathability can be kept.

On the other hand, also as shown in Figure 6, absorbent cores 56 has: leading section 56F; Rearward end 56B; And tighten up the 56N of portion, this tightens up the 56N of portion between leading section 56F and rearward end 56B, and it is narrower than leading section 56F and rearward end 56B, when the fore-and-aft direction length of establishing absorbent cores leading section 56F is L1, the fore-and-aft direction length of the outer eclipsed lap of load 12F of absorbent cores 56 and veutro is L2, the fore-and-aft direction length of absorbent cores rearward end 56B is L3, the fore-and-aft direction length of the outer eclipsed lap of load 12B of absorbent cores 56 and dorsal part is L4, the minimum widith that tightens up the 56N of portion is W1, when the width of the width of absorbent cores leading section 56F and absorbent cores rearward end 56B was W2, absorbent cores 56 preferably constituted and satisfies following various (1)～(4):

70mm≤W1＜W2≤190mm…(1)

0.5≤W1/W2≤0.85…(2)

0mm≤L1-L2≤70mm…(3)

0mm≤L3-L4≤50mm…(4)

More preferably following scope:

90mm≤W1≤120mm…(1′)

100mm≤W2≤190mm…(1″)

0.6≤W1/W2≤0.75…(2′)

30mm＜L1-L2≤60mm…(3′)

5mm＜L3-L4≤30mm…(4′)

The reason of these conditions as previously mentioned.If W1 and W2 are narrow, stop that then erecting of limit becomes unstable, and the rigidity of absorbent cores improves insufficiently, if wide, then since the reduction of fit cause dressing and feel variation.In addition, under the situation that load 12F, 12B only are made of the part that occupies the above-below direction scope identical with junction surface 12A outside aforesaid, interior dress body 20 and outer load 12F, 12B approximate vertical intersect, can concentrate very big power in the bonding part that interior dress body 20 and outer load 12F, 12B engage, so the numerical value of L1-L2 and L3-L4 is preferably more than the 5mm, more preferably more than the 10mm.On the other hand, possess at downside under the situation of extension 14, L1-L2 and L3-L4 be as mentioned above 0mm above just can with.

And, in the time of in above-mentioned numerical range, between crotch in the portion, there is not absorbent cores 56 near stopping the mounting portion 65 on limit 60,61, therefore the degree of freedom that stops the action on limit 60,61 increases, stop that limit 60,61 opens towards the width outside easily, with face contact skin, improved the compliance of binding face easily leg action.In the both sides, front and back,, therefore can make to stop that erecting of limit 60,61 is stable as basic point (fulcrum) because the absorbent cores 56 of interior dress body 20 sidepieces is present in enough scopes.The part of portion is to stop that limit 60,61 is a benchmark from the posture that erects towards the width inboard towards the open displacement part in the width outside with the width both side edges of interior dress body 20 until between crotch from both sides, front and back one, this posture change that stops limit 60,61 supported by the absorbent cores 56 that is present in till interior dress body 20 sidepieces, stablized thereby the integral body that stops limit 60,61 erects shape.If break away from above-mentioned numerical range, it is excessive that the portion of tightening up becomes, the degree of freedom that then stops limit 60,61 between crotch in the portion can become too high, exist in the danger that shank forms the gap on every side easily on the contrary, and, therefore exist and stop the unsettled danger that erects on limit 60,61 because the both sides, front and back of portion do not have basic point (fulcrum) between crotch.If the portion of tightening up becomes too small on the contrary, stop that then the degree of freedom on limit 60,61 reduces, not preferred therefore.

In addition, absorbent cores 56 especially preferably constitutes the structure that satisfies following formula (6) and (7).

90mm≤L1＜L3≤180mm…(6)

40mm≤L2＜L4≤180mm…(7)

And, whole fore-and-aft direction length L 7 of tightening up the 56N of portion be preferably 80mm above, be preferably 120～260mm especially.If it is too short to tighten up the fore-and-aft direction length L 7 of the 56N of portion, then the fit around the shank is reduced, absorbent cores 56 can hinder the action of shanks, if long then be difficult to guarantee the rigidity of absorbent cores 56.

On the other hand, in order to improve near the rigidity of dress body 20 both sides the lower limb that is positioned at outer load 12F of veutro and the outer load 12B of dorsal part, as shown in figure 10, guarantee that preferably the fore-and-aft direction length L 5 of the outside and the inboard ledge fixed part 67 69,66, that be positioned at the front side that stops limit 60,61 and the fore-and-aft direction length L 6 that is positioned at the fixed part of rear side be satisfied with following formula (4) and (5).

L2＜L5…(4)

L4＜L6…(5)

Words of Gou Chenging as mentioned above, then can to utilize in order making and to stop that limit 60,61 erects and fix 67 by the bonding etc. formed of necessity at their front part and rear section, the rigidity of the both sides of dress body 20 in improving, thus near the rigidity of dress body 20 both sides the power lower limb that concentrate easily, that be positioned at outer load 12F of veutro and the outer load 12B of dorsal part is improved.Therefore, prevented the distortion of absorbent cores 56 more effectively.The preferred outside and inboard stop that the either party in the limit 60,61 satisfies this relation, also can but a side satisfies.In addition, more preferably satisfy following formula (4 ') and (5 ').

5mm＜L5＜210mm…(4′)

5mm＜L6＜210mm…(5′)

And, if front and back fixed part 67 extend to tighten up the 56N of portion and with tighten up the 56N of portion and repeat 0～10mm, outside raising is positioned at veutro, be preferred aspect near the rigidity of dress body 20 both sides the lower limb of load 12B outside load 12F and the dorsal part then, but stopping that the stable of limit 60,61 erects under the preferential situation, preferred before and after fixed part 67 do not extend to and tighten up the 56N of portion.

And, stop limit 61 having the above-mentioned inboard and the outside, under 60 the situation, following configuration: make the front-end and back-end of tightening up the 50N of portion be positioned at position than side between the more close crotch in the lower end of waist portion, the minimum widith W1 that tightens up the 56N of portion be the width of absorbent cores leading section 56F and absorbent cores rearward end 56B width W 2 50%～85%, be preferably 60%～75%, each inboard stops that the border of installed inside part in the limit 61 and inboard ledge is passed through along fore-and-aft direction and tightens up the 56N of portion, Pei Zhi words like this, the inboard stops that limit 61 can erect passing through on the line that tightens up the 50N of portion, so stop that the limit is more remarkable with respect to the fit around the shank, be preferred therefore.

In addition, more remarkable in order to make effect, preferably make the fibre density of absorbent cores leading section 56F and absorbent cores rearward end 56B width both sides separately be higher than the fibre density of width pars intermedia.Particularly, preferably make the thickness of absorbent cores 56 even, and the basic weight of the fiber assembly of increase absorbent cores leading section 56F and absorbent cores rearward end 56B width both sides separately, in this case, the thickness of absorbent cores 56 is preferably 1～15mm, is preferably 350～700g/m from the basic weight of width both sides of the edge in the scope 56x of center side 5～30mm ², the basic weight of the pars intermedia 56m between the described both sides is preferably 300～600g/m ², the basic weight of width both sides is preferably 1.2～2.0 times of width pars intermedia.In addition, in this case, the mixed proportion of the superabsorbent polymer in the absorbent cores 56 is about 40%～70%.

In addition, because the absorbent cores 56 of the manner has the 56N of the portion of tightening up,, adorn the flexibility of one between the crotch of body 20 in also can not influencing even therefore the whole above-mentioned scope of the width both sides of absorbent cores 56 all be a high basic weight portion.Certainly, high basic weight portion is positioned at the width both sides of absorbent cores 56, particularly also can the width both sides of the edge of absorbent cores 56 and outside form discontinuously near the intersection point of lower edge of load 12F, 12B.In this case, the form slection of high basic weight quality award from the ministry is formed in the gamut of fore-and-aft direction about 10～80mm, particularly about 20～50mm.

Utilizability on the industry

The present invention can be applied to be pre-formed the Breeches type disposable diaper into pants type. In addition, The preferred following structure in limit that stops of the present invention: such as the pants type of the above-mentioned illustrative exterior type that is divided into two Breeches type disposable diaper shown in disposable diaper or the patent documentation 2 is such, section between crotch At least both side edges do not have outer load, stop limit (during double-deck situation, for the outside stops the limit) Form the both side edges of section between crotch. In this case, there is not outer load in the both side edges of section between crotch The zone is preferably more than 1/4 of diaper total length, more preferably more than 1/3. But, resistance of the present invention Rib is not limited in such structure, also can be applied to the pants-type disposable urine of alternate manner Cloth or belt disposable diaper.

Claims (16)

1. disposable diaper, this disposable diaper is a Breeches type disposable diaper, this Breeches type disposable 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, outside the upper end-face edge of waist portion load outside veutro of described tubular and the dorsal part under the state of the upper end-face edge of load alignment, engage by junction surface and to form 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; And

In the dress body, its leading section is connected in the width central part inner surface of the outer load of described veutro, and should in the rearward end of dress body be connected in the width central part inner surface of the outer load of described dorsal part, and should in the dress body cover to veutro by portion between crotch from dorsal part,

The dress body has in described: the liquid permeability surface patch; And the absorbent cores that forms by fiber assembly that is equipped on the outer surface side of this liquid permeability surface patch,

The outer load side between crotch of outer load of described veutro and dorsal part is left and discontinuous,

It is characterized in that, the constituting of described disposable diaper,

Described absorbent cores has: leading section; Rearward end; And between described leading section and rearward end and with leading section, compare the narrow portion of tightening up of width with rearward end,

The fore-and-aft direction length of the eclipsed lap of load is that the fore-and-aft direction length of L2, described absorbent cores rearward end is the width of the width that fore-and-aft direction length is L4, the described minimum widith that tightens up portion is W1, described absorbent cores leading section of the eclipsed lap of load outside L3, described absorbent cores and the described dorsal part and absorbent cores rearward end when being W2 outside the fore-and-aft direction length of establishing described absorbent cores leading section is L1, described absorbent cores and described veutro, satisfies following formula (1)～(3):

70mm≤W1＜W2≤190mm…(1)

0mm≤L1-L2≤70mm…(2)

0mm≤L3-L4≤50mm…(3)。

2. disposable diaper according to claim 1, wherein,

In described, adorn in the body, at least outside the width both sides of the edge of interior dress body and veutro near the intersection point of the lower edge of load and outside the width both sides of the edge of interior dress body and the dorsal part near the intersection point of the lower edge of load, rigidity is 15～50cN/50mm.

3. disposable diaper according to claim 1, wherein,

The width both sides of dress body are provided with the zonal limit that stops that erects towards bodyside at the front end from interior dress body along fore-and-aft direction to the scope of rear end in described,

Stop in front part, rear section and the front part and the mid portion between the rear section on limit at this, front part and rear section are fixed with respect to described surface patch under the state folding in the mode that does not erect, and mid portion is not fixed, and be fixed with elongate elastic telescopic parts at this mid portion with state at least along the fore-and-aft direction elongation

Be L5 when establishing the described fore-and-aft direction length that stops the front part on limit, when the described fore-and-aft direction length that stops the rear section on limit is L6, satisfy following formula (4) and (5):

L2＜L5…(4)

L4＜L6…(5)。

4. disposable diaper according to claim 1, wherein,

The fibre density of the described absorbent cores leading section of described absorbent cores and absorbent cores rearward end width both sides separately is greater than the fibre density of width pars intermedia.

5. Breeches type disposable diaper according to claim 1, wherein,

Be respectively equipped with along the width both sides of described interior dress body and stop the limit in the zonal inboard that fore-and-aft direction extends, and stop that in described inboard the width both sides that the outside on limit is respectively equipped with dress body in described stop the limit in the zonal outside that fore-and-aft direction extends

Described inboard stops that the end of width one side on limit forms the installed inside part that the width end with respect to described in-built body is fixed; Part beyond this installed inside part forms the inboard ledge of partly giving prominence to from installed inside; The surface of described surface patch is fixed at fore-and-aft direction both ends in this inboard ledge; The fore-and-aft direction pars intermedia forms the free part in loose inboard; At least the leading section of free part is fixed with elongate elastomeric element along fore-and-aft direction with elongation state in this inboard

The described outside stops that the end of width one side on limit forms the mounting portion, the outside that is fixed with respect to the rear side position of adorning the width end of body in described, part beyond this mounting portion, outside forms the outside ledge outstanding from mounting portion, the outside, fore-and-aft direction both ends in this outside ledge partly are made of root side part and front, described side part extends to the surface that described inboard stops the fore-and-aft direction both ends of the inboard ledge the limit from mounting portion, the described outside by the sidepiece of dress body in described, and be fixed in the surface at the fore-and-aft direction both ends of described inboard ledge, described front part is turned back to the width outside from the front end of this root side part, and be fixed in described side part, the fore-and-aft direction pars intermedia is the free part in the loose outside, and the leading section at least of free part is fixed with elongate elastomeric element along fore-and-aft direction with elongation state in this outside.

6. disposable diaper according to claim 5, wherein,

The end that described inboard stops width one side on limit that is positioned at of described installed inside part is fixed with respect to the position at the face side position that comprises the described width end of adorning body.

7. disposable diaper according to claim 6, wherein,

The border of described installed inside part and described inboard ledge is configured to pass through the described portion of tightening up along fore-and-aft direction.

8. disposable diaper according to claim 7, wherein,

Under the unfolded state of diaper, the border of described installed inside part and described inboard ledge is positioned at lateral margin from described dress surface side to the position of width center side 3～20mm, and the mounting portion, the described outside and the described outside are given prominence to portion boundary and be positioned at the position of adorning the lateral margin of body rear side to width center side 5～30mm from described.

9. disposable diaper according to claim 8, wherein,

The outer surface side of the described absorbent cores of dress body is covered by the opaque liquid sheet in described, this opaque liquid sheet is walked around the width both sides of described absorbent cores, and extends to and be positioned at the described installed inside part of surface patch side of described absorbent cores and the corresponding position, border of described inboard ledge.

10. disposable diaper according to claim 9, wherein,

The width of described inboard ledge is greater than the width of the side, interior dress surface that is fixed with described installed inside part,

Width in the root side of the described outside ledge part, that under the diaper deployed condition, be positioned at the part of described dress surface side, with the width sum of the front part of described outside ledge width greater than the face side position that is fixed with described installed inside dress body partly

Described inboard stops that the limit and the outside stop not built-in opaque liquid sheet in the limit.

11. a disposable diaper, described disposable diaper possesses:

In the dress body, described in the dress body have the liquid permeability surface patch and be disposed at the absorbent cores of the outer surface side of this liquid permeability surface patch, and should in the dress body cover to veutro by portion between crotch from dorsal part; And

Be installed on the flaky exterior body of the outer surface side of dress body in this,

It is characterized in that,

Be respectively equipped with along the width both sides of described interior dress body and stop the limit in the zonal inboard that fore-and-aft direction extends, and stop that in described inboard the width both sides that the outside on limit is respectively equipped with dress body in described stop the limit in the zonal outside that fore-and-aft direction extends

Described inboard stops that the end of width one side on limit forms the installed inside part that the position with respect to the face side position of the width end that comprises described in-built body is fixed; Part beyond this installed inside part forms the inboard ledge of partly giving prominence to from installed inside; The surface of described surface patch is fixed at fore-and-aft direction both ends in this inboard ledge; The fore-and-aft direction pars intermedia forms the free part in loose inboard; At least the leading section of free part is fixed with elongate elastomeric element along fore-and-aft direction with elongation state in this inboard

The described outside stops that the end of width one side on limit forms the mounting portion, the outside that is fixed with respect to the rear side position of adorning the width end of body in described, part beyond this mounting portion, outside forms the outside ledge outstanding from mounting portion, the outside, fore-and-aft direction both ends in this outside ledge partly are made of root side part and front, described side part extends to the surface that described inboard stops the fore-and-aft direction both ends of the inboard ledge the limit from mounting portion, the described outside by the sidepiece of dress body in described, and be fixed in the surface at the fore-and-aft direction both ends of described inboard ledge, described front part is turned back to the width outside from the front end of this root side part, and be fixed in described side part, the fore-and-aft direction pars intermedia forms the free part in the loose outside, and the leading section at least of free part is fixed with elongate elastomeric element along fore-and-aft direction with elongation state in this outside.

12. disposable diaper according to claim 11, wherein,

Under the unfolded state of diaper, the border of described installed inside part and described inboard ledge is positioned at lateral margin from described dress surface side to the position of width center side 3～20mm, and the mounting portion, the described outside and the described outside are given prominence to portion boundary and be positioned at the position of adorning the lateral margin of body rear side to width center side 5～30mm from described.

13. disposable diaper according to claim 12, wherein,

The outer surface side of the described absorbent cores of dress body is covered by the opaque liquid sheet in described, this opaque liquid sheet is walked around the width both sides of described absorbent cores, and extends to and be positioned at the described installed inside part of surface patch side of described absorbent cores and the corresponding position, border of described inboard ledge.

14. disposable diaper according to claim 13, wherein,

The width of described inboard ledge is greater than the width of the side, interior dress surface that is fixed with described installed inside part,

Width in the root side of the described outside ledge part, that under the diaper deployed condition, be positioned at the part of described dress surface side, with the width sum of the front part of described outside ledge greater than the width that is fixed with described installed inside side, dress surface partly

Described inboard stops that the limit and the outside stop and is not built-in with the opaque liquid sheet in the limit.

15. disposable diaper according to claim 11, wherein,

Described exterior body is the waist portion of tubular, the waist portion of described tubular is made of the outer load of dorsal part of outer load of the veutro of the veutro in the waist that covers wearer and covering dorsal part, under the state that the upper end-face edge of load aligns outside the upper end-face edge of waist portion load outside veutro of described tubular and the dorsal part, engage by junction surface and to form 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

The leading section of described interior dress body is connected in the width central part inner surface of the outer load of described veutro, and is somebody's turn to do the width central part inner surface that the interior rearward end of adorning body is connected in the outer load of described dorsal part.

16. disposable diaper according to claim 15, wherein,

Described absorbent cores has: leading section; Rearward end; And between leading section and rearward end and with leading section, compare the narrow portion of tightening up of width with rearward end,

Described front-end and back-end of tightening up portion are positioned at the position than side between the more close crotch in lower end of described waist portion,

50%～85% of the width that the described minimum widith that tightens up portion is described absorbent cores leading section and the width of absorbent cores rearward end,

The border of described installed inside part and described inboard ledge is configured to pass through the described portion of tightening up along fore-and-aft direction.

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