CN104379104A

CN104379104A - Absorbent article

Info

Publication number: CN104379104A
Application number: CN201380030862.2A
Authority: CN
Inventors: 铃木彦行; 富田美奈; 柳原茂人; 佐藤信也
Original assignee: Kao Corp
Current assignee: Kao Corp
Priority date: 2012-06-11
Filing date: 2013-05-31
Publication date: 2015-02-25
Anticipated expiration: 2033-05-31
Also published as: WO2013187261A1; RU2014152693A; JP5608708B2; TW201417782A; JP2013255559A; BR112014031071B1; TWI508709B; BR112014031071A2; CN104379104B; RU2636568C2

Abstract

A diaper (1) of an embodiment of the present invention is provided with: a front surface sheet (2); a rear surface sheet (3); and a vertically-long absorbent body (4) disposed therebetween. Indicators (5) are continuously arranged in the longitudinal direction between the rear surface sheet (3) and the absorbent body (4). The absorbent body (4) has: an absorbent core (41) containing an absorbent polymer; and a coating material (42) that encases the absorbent core (41). Convex high basis weight parts (43) and concave low basis weight parts (44) adjacent to the high basis weight parts (43) are alternately formed in the absorbent core (41), and the high basis weight parts (43) and low basis weight parts (44) are integrally formed. A relief structure, which is formed by the alternate arrangement of the high basis weight parts (43) and low basis weight parts (44) in the direction along which the indicators (5) extend, is formed on the absorbent core (41) on the side of the rear surface sheet (3) on which the indicators (5) are attached.

Description

Absorbent commodity

Technical field

The present invention relates to the absorbent commodities such as disposable diaper.

Background technology

All the time, knownly the disposable diaper being judged the indicator whether wearer is drained by color is comprised.Such as, record in patent documentation 1, for informing that indicator that mother has drained urine is arranged at the disposable diaper between back-sheet and absorber.Disposable diaper described in patent documentation 1 is the diaper easily identifying the variable color produced because of drained urine etc. from outside.

As other technology, in patent documentation 2, record the absorbent commodity comprising the absorber being formed with channel-shaped space extended in the in-plane direction.

Prior art document

Patent documentation

Patent documentation 1: Japanese Unexamined Patent Publication 2005-21390 publication

Patent documentation 2: Japanese Unexamined Patent Publication 2009-119154 publication

Summary of the invention

Disposable diaper described in patent documentation 1, the variable color produced because of drained urine etc. is identified from outside although easy as mentioned above, but as consumer demand, also exist and also wish easily to identify that the demand of diaper change is carried out in variable color when Excreta is a small amount of.

In addition, in patent documentation 2, in the absorbent commodity comprising the absorber being formed with channel-shaped space extended in the in-plane direction, how indicator is configured in the content of above-mentioned absorber, there is no any relevant record.

Thus, the invention provides the absorbent commodity that can meet the demand.

The present invention relates to a kind of absorbent commodity, its absorber that there is the face sheet being configured in skin opposite face side, the back-sheet being configured in non-skin opposite face side and be configured in the lengthwise between these two sheet materials, between this back-sheet and this absorber, longitudinal direction is configured with the indicator of being informed excretion situation by the change of color continuously.Above-mentioned absorber has the absorbent core containing absorbing polymeric, in above-mentioned absorbent core, the high grammes per square metre portion of protruding to above-mentioned back-sheet side that grammes per square metre is relatively high and be adjacent to this high grammes per square metre portion and relatively low alternately being formed at longitudinal direction from the low grammes per square metre portion of above-mentioned back-sheet side direction above-mentioned face sheet side depression of grammes per square metre, this high grammes per square metre portion and this low grammes per square metre portion are integrally formed, be formed with above-mentioned high grammes per square metre portion and above-mentioned low grammes per square metre portion replace the sag and swell of configuration at the bearing of trend of this indicator in the side being applied in above-mentioned indicator of above-mentioned back-sheet.

Accompanying drawing explanation

Fig. 1 is that top view is blocked in the local of the disposable diaper of the deploying type observing embodiments of the present invention from face sheet side.

Fig. 2 is the I-I profile of Fig. 1.

Fig. 3 is the II-II profile after the disposable diaper of Fig. 1 absorbs a small amount of body fluid.

Fig. 4 is the skeleton diagram of an example of the manufacturing installation representing the absorber used in the disposable diaper of the deploying type of embodiments of the present invention.

Fig. 5 is the constructed profile in the width direction of a part (recess) for the outer peripheral face side of the rotating cylinder shown in Fig. 4.

Fig. 6 is that the recess of the rotating cylinder represented shown in Fig. 4 piles up the constructed profile having the state of absorbent material.

Fig. 7 is the top view observing the absorbent core that the disposable diaper shown in Fig. 1 has from back-sheet side.

Fig. 8 is the top view observing the absorbent core used the disposable diaper of another embodiment of the present invention from back-sheet side.

Fig. 9 is the top view observing the absorbent core used the disposable diaper of another embodiment of the present invention from back-sheet side.

Figure 10 is the top view observing the absorbent core used the disposable diaper of another embodiment of the present invention from back-sheet side.

Detailed description of the invention

Below, based on preferred implementation, with reference to Fig. 1 ~ Fig. 3, absorbent commodity of the present invention is described.Fig. 1 represents that top view is blocked in the local of the disposable diaper of the deploying type observing embodiments of the present invention from face sheet side, and Fig. 2 represents the I-I profile of Fig. 1.In addition, Fig. 3 represent the disposable diaper of Fig. 1 absorb a small amount of body fluid after II-II profile.

As shown in Figure 1, the disposable diaper 1 (hereinafter also referred to " diaper 1 ") of present embodiment comprises: the face sheet 2 being configured in skin opposite face side; Be configured in the back-sheet 3 of non-skin opposite face side; And be configured in the absorber 4 of the lengthwise between these two sheet materials 2,3, overleaf between sheet material 3 and absorber 4, longitudinal direction is configured with the indicator 5 of being informed excretion by the change of color continuously.As shown in Figure 1, the centre line C L that is formed as about extending along longitudinal direction of diaper 1 is symmetrical.

Carry out in detail describing to the diaper 1 of present embodiment, as shown in Figure 1, diaper 1 has the veutro portion A, drosal part B and the crotch C between this A, B that are obtained along longitudinal direction (hereinafter also referred to " Y-direction ", Y-direction: refer to the direction being parallel to centre line C L) 3 deciles in the deployed state by diaper 1.Veutro portion A is the position being positioned at the veutro of wearer when dressing diaper, and drosal part B is the position of the dorsal part being positioned at wearer, and crotch C is the position of the in-leg being positioned at wearer.Crotch C is positioned at longitudinal direction (Y-direction) central part of diaper 1.In addition, the transverse direction (hereinafter also referred to " the X-direction ") direction orthogonal with longitudinal direction (Y-direction) being set to diaper 1 is described.

In this manual, so-called " skin opposite face " refers to the face being configured in the skin side of wearer when dressing in this two sides of front and back of each parts such as the face sheet 2 forming diaper 1, so-called " non-skin opposite face " refer in this two sides of front and back of each parts such as face sheet 2 when dressing towards the face of the opposition side of the skin side of wearer.

As shown in Figure 1, the left and right sides edge of the veutro portion A of diaper 1 and the left and right sides edge of drosal part B more stretch out to transverse direction (X-direction) foreign side than the left and right sides edge of crotch C respectively.And left and right sides edge side in transverse direction (X-direction) of crotch C bends to convex, has longitudinal direction (Y-direction) central part on the whole and inwardly just receives thin shape.Face sheet 2 and back-sheet 3 are stretched out outward from the left and right sides edge of absorber 4 and rear and front end edge respectively.As shown in Figure 2, the size of the transverse direction (X-direction) of face sheet 2 is less than the size of the transverse direction (X-direction) of back-sheet 3.Face sheet 2 and back-sheet 3 directly engage at the extension stretched out outward from the periphery of absorber 4 respectively or are bonded with each other across other parts, and clamping, fixing absorber 4.

As shown in Figure 1, diaper 1 is the diaper of so-called deploying type, is provided with a pair pull stap 7,7 in the edge, the left and right sides of drosal part B, is provided with fixes taking of this pull stap 7,7 and be with 8 at the outer surface (non-skin opposite face) of veutro portion A.As shown in Figure 1, at each of the both sides along longitudinal direction (Y-direction) of diaper 1, the three-dimensional gauffer formation sheet material 62 with the elastomeric element 61 fixed in the Y direction with extended state configures and is fixed on the sidepiece of face sheet 2, forms a pair three-dimensional gauffer 6,6 (with reference to Fig. 2) thus.In addition, as shown in Figure 1, at each of the both sides along longitudinal direction (Y-direction) of diaper 1, multiple leg elastic members 63 that leg creases is formed with extended state configuration in the Y direction, form leg creases by the contraction of leg elastic members 63.In addition, in longitudinal direction (Y-direction) end of the drosal part B side of diaper 1, the waist elastic members 64 that waist gauffer is formed with extended state configuration in the X direction, forms waist gauffer by the contraction of waist elastic members 64.

Absorber 4 has the absorbent core 41 comprising absorbing polymeric, and in diaper 1, has the coating member 42 of coated absorbent core 41.And it is coated that absorbent core 41 is wrapped by part 42.Like this, in diaper 1, absorber 4 is by utilizing the coating member 42 as the hydrophilic sheet of liquid permeability be coated on the absorbent core 41 of liquid retainability longer on longitudinal direction (Y-direction) and formed as shown in Figure 2.Specifically, the coating member 42 of diaper 1, as shown in Figure 2, the coated absorbent core 41 in the overlapping portion 420 that the side edge part of back-sheet 3 side of absorbent core 41 formation coating member 42 overlaps each other.The absorber 4 of diaper 1 is by utilizing the coated absorbent core 41 of coating member 42 like this and being formed.

Absorbent core 41 has: grammes per square metre (mass area ratio) relatively high and rearwardly sheet material 3 side protrude high grammes per square metre portion 43; And adjoin with high grammes per square metre portion 43, grammes per square metre is relatively low and from the low grammes per square metre portion 44 of back-sheet 3 side direction face sheet 2 side depression.Carry out in detail describing, in diaper 1, as shown in Figure 1 and Figure 2, form the absorbent core 41 of absorber 4 and there is absorbent material than the high grammes per square metre portion 43 in low grammes per square metre portion more than 44 and the absorbent material low grammes per square metre portion 44 (44X, 44Y) fewer than high grammes per square metre portion 43.At absorbent core 41, as shown in Figure 1, be formed with the low grammes per square metre portion 44X of multiple wire (continuous linear shape) extended along transverse direction (X-direction) respectively, and the low grammes per square metre portion 44Y of the wire (continuous linear shape) extended along longitudinal direction (Y-direction).As shown in Figure 1, low grammes per square metre portion 44 is formed as lattice-shaped on the whole by the low grammes per square metre portion 44X of wire that extends along transverse direction (X-direction) and the low grammes per square metre portion 44Y of wire that extends along longitudinal direction (Y-direction), and the position (position of grid hole) marked off at low grammes per square metre portion 44X, the 44Y by this linearity is configured with high grammes per square metre portion 43.

In the present invention, as shown in Figure 2, the high grammes per square metre portion 43 of absorbent core 41 and low grammes per square metre portion 44 integrally formed.Herein, so-called " integrally formed " refers to that high grammes per square metre portion 43 and low grammes per square metre portion 44 are inseparable not ground integrated each other via engagement means such as bonding agent, heat fuse, and is formed as one by same material.Like this, high grammes per square metre portion 43 and low grammes per square metre portion 44 integrally formed time, having body fluid can the seriality of successfully movement.The manufacture method of such absorber 4 is described hereinafter.

In addition, as shown in Figure 1, the side being applied with indicator 5 of absorbent core 41 sheet material 3 overleaf, is formed with high grammes per square metre portion 43 and low grammes per square metre portion 44 (44X) sag and swell along the bearing of trend alternately configuration of indicator 5.That is, face sheet 2 side of absorbent core 41 is smooth, is formed with sag and swell in back-sheet 3 side relative with indicator 5.More specifically be described, as shown in Figure 2, high grammes per square metre portion 43 rearwardly sheet material 3 side protrudes, and low grammes per square metre portion 44 (44X, 44Y) is caved in face sheet 2 side.Namely, the recess (groove) to face sheet 2 side depression in the sag and swell of absorbent core 41 is formed primarily of low grammes per square metre portion 44 (44X, 44Y), and the protuberance that rearwardly sheet material 3 side in the sag and swell of absorbent core 41 is given prominence to is formed primarily of high grammes per square metre portion 43.Herein, high grammes per square metre portion 43 near the border that so-called " recess is formed primarily of low grammes per square metre portion 44 " comprises low grammes per square metre portion 44 and high grammes per square metre portion 43 forms the situation of a part for this recess, similarly, so-called " protuberance is formed primarily of high grammes per square metre portion 43 " comprise high grammes per square metre portion 43 and low grammes per square metre portion 44 border near low grammes per square metre portion 44 form the situation of a part for this protuberance.In addition, the bearing of trend of so-called indicator 5 to refer in diaper 1 direction extended along longitudinal direction as shown in Figure 1, and is the direction identical with the direction being parallel to centre line C L (Y-direction).

Like this, as shown in Figure 2, absorbent core 41 is positioned at the top of indicator 5, and back-sheet 3 side relative with indicator 5 is formed as sag and swell.Namely, as shown in Figure 1, back-sheet 3 side of the absorbent core 41 relative with indicator 5, longitudinal direction (Y-direction) is alternately configured with the low grammes per square metre portion 44X of the wire extended along transverse direction (X-direction) and high grammes per square metre portion 43, and forms sag and swell.

In addition, as shown in Figure 2, the low grammes per square metre portion 44 of absorbent core 41 in the thickness direction T upward bias of diaper 1 in face sheet 2 side (the skin opposite face side of absorber 4).As shown in Figure 2, face sheet 2 side of absorbent core 41 is smooth.

Use the top view (Fig. 7) observing absorbent core 41 gained that diaper 1 has from back-sheet 3 side, carry out in more detail describing to the sag and swell of absorbent core 41.

In diaper 1, as shown in Figure 7, by the low grammes per square metre portion 44X extended along transverse direction (X-direction) be configured with 7 regularly along the high grammes per square metre portion 43 that the low grammes per square metre portion 44Y that longitudinal direction (Y-direction) extends marks off and the sag and swell of the bulk formed on transverse direction (X-direction), from veutro portion A until drosal part B configuration 14 row on longitudinal direction (Y-direction) regularly, and form block-shaped region 411.In the block-shaped region 411 of diaper 1, as shown in Figure 7,8 low grammes per square metre portion 44Y extended along longitudinal direction (Y-direction) are respectively from veutro portion A until drosal part B is configured to linearity.

When absorbent core 41 is in for disposable diaper, the total length of preferred longitudinal direction (Y-direction) is more than 250mm below 550mm, and the beam overall of transverse direction (X-direction) is more than 50mm below 200mm.

In the absorbent core 41 of diaper 1, as shown in Figure 1, from the water quantities of urine or soft stool number judgement and the determination of vented position become easy viewpoint, the average length of the bearing of trend (Y-direction) of the indicator 5 in low grammes per square metre portion 44 (44X), shorter than the average length of the bearing of trend (Y-direction) of the indicator in high grammes per square metre portion 43.Specifically, in absorbent core 41, the average length (L1) of the bearing of trend (Y-direction) of the indicator 5 of the low grammes per square metre portion 44X of the wire extended along transverse direction (X-direction), shorter than the average length (L3) of the bearing of trend (Y-direction) of the indicator in high grammes per square metre portion 43.Carry out the words described in more detail, in order to play above-mentioned effect, the average length (L3) that the average length (L1) of low grammes per square metre portion 44 (44X) is high grammes per square metre portion 43 more than 3%, be preferably more than 5% length, and be the length of less than 20%, preferably less than 15%, more specifically, be preferably the length of less than more than 3% 20%, and then be preferably the length of less than more than 5% 15%.Herein, so-called " average length " refers to the meansigma methods of the measured length at different 5 Site Determinations.

Below, carry out in more detail describing to the size, grammes per square metre etc. in high grammes per square metre portion 43 and low grammes per square metre portion 44 (44X).

When absorbent commodity is used in such as disposable diaper, the shape of absorptive core 41 always can not be destroyed because of the activity of wearer, and the region limits producing the indicator of variable color because of a small amount of moisture is set out in the viewpoint of a part for indicator 5, the width L1 of the low grammes per square metre portion 44X of the wire extended along transverse direction (X-direction) is more than 0.5mm, be preferably more than 1mm, and be below 5mm, be preferably below 3mm, more specifically, be preferably more than 0.5mm below 5mm, and then be preferably more than 1mm below 3mm.

In addition, width L1 is the measured value of the position of the bottom of recess in the sag and swell of absorbent core 41.

In diaper 1, as shown in Figure 1, when overlooking, high grammes per square metre portion 43 is formed as rectangular shape longer on longitudinal direction (Y-direction).In addition, in diaper 1, when overlooking high grammes per square metre portion 43, it is formed as rectangle, but corner also can be arc-shaped, also can be polygon-shaped, oval, their combination etc.

The high grammes per square metre portion 43 of diaper 1, when absorbent commodity is used in such as disposable diaper, from the view point of in order to easily judge variable color because a small amount of moisture produces and the indicator portion because of a small amount of moisture variable color be suitably dispersed in the whole region of indicator 5, as shown in Figure 1, the length L3 of its longitudinal direction (Y-direction) is more than 5mm, be preferably more than 15mm, and be below 30mm, be preferably below 25mm, more specifically, be preferably more than 5mm below 30mm, and then be preferably more than 15mm below 25mm.

When absorbent commodity is used in such as disposable diaper, from the view point of for the formation of the space easily making a small amount of moisture contact with indicator 5, the grammes per square metre of low grammes per square metre portion 44 (44X) is more than 20% of the grammes per square metre in high grammes per square metre portion 43, be preferably more than 30%, and be less than 80%, be preferably less than 70%, more specifically, be preferably less than more than 20% 80%, and then be preferably less than more than 30% 70%.

Specifically, the grammes per square metre of low grammes per square metre portion 44 (44X) is 100g/m ²above, 150g/m is preferably ²above, and be 500g/m ²below, 400g/m is preferably ²below, more specifically, 100g/m is preferably ²above 500g/m ²below, so be preferably 150g/m ²above 400g/m ²below.In addition, the grammes per square metre in high grammes per square metre portion 43 is 300g/m ²above, 350g/m is preferably ²above, and be 900g/m ²below, 800g/m is preferably ²below, more specifically, 300g/m is preferably ²above 900g/m ²below, so be preferably 350g/m ²above 800g/m ²below.

In addition, the thickness of low grammes per square metre portion 44 (44X) is preferably less than more than 30% 90% of the thickness in high grammes per square metre portion 43.Specifically, the thickness of low grammes per square metre portion 44 (44X) is more than 1.5mm, is preferably more than 2.5mm, and be below 4.5mm, be preferably below 4.0mm, more specifically, be preferably more than 1.5mm below 4.5mm, and then be preferably more than 2.5mm below 4.0mm.The thickness in high grammes per square metre portion 43 is more than 2mm, is preferably more than 3mm, and is below 8mm, is preferably below 7mm, more specifically, is preferably more than 2mm below 8mm, and then is preferably more than 3mm below 7mm.

In addition, thickness is that sample is cut into given size, pressurizes 10 minutes to measurement site with 5kPa, measures immediately after heavy.Measurement site adopts for each diaper and comprises more than 3 places at more than each any place of veutro portion, crotch, drosal part, and what utilize 2 diaper samples (measurement site is more than 6 places) on average draws thickness.The thickness in high grammes per square metre portion 43 and low grammes per square metre portion 44 (44X) such as utilizes sharp razor to cut off diaper 1 along the longitudinal direction (Y-direction) shown in Fig. 1 or transverse direction (X-direction), and the cross section measuring the sample after this cut-out obtains.The thickness in high grammes per square metre portion 43 is values of the thickest position finding in protuberance, and the thickness of low grammes per square metre portion 44 (44X) is the value of position finding the thinnest in recess.When being difficult to be measured by naked eyes, such as, also can using microscope (KEYENCE company manufactures VHX-1000), observe with the multiplying power of 20 ~ 100 times and measure the cross section of the sample after above-mentioned cut-out.

The grammes per square metre in high grammes per square metre portion 43 and low grammes per square metre portion 44 measures as follows.

The assay method > of < grammes per square metre

The assay method of the grammes per square metre in high grammes per square metre portion 43 and low grammes per square metre portion 44 is as described below.

Use the single-blade razor that FEATHER company manufactures, the high grammes per square metre portion 43 along absorbent core 41 cuts off with the boundary line in low grammes per square metre portion 44.Use respectively electronic balance (the electronic balance GR-300 that A & D company manufactures, precision: after arithmetic point 4) measure 10 small pieces in high grammes per square metre portion 43 cutting off gained, obtain the average weight of 1 small pieces in high grammes per square metre portion 43.By the average area of calculated average weight divided by each small pieces in high grammes per square metre portion 43, and calculate the grammes per square metre in high grammes per square metre portion 43.

Then, the boundary line above extended at transverse direction (X-direction) along high grammes per square metre portion 43 with low grammes per square metre portion 44 (44X), it is the design size of the width of low grammes per square metre portion 44 (44X) according to length 100mm, width, use the single-blade razor that FEATHER company manufactures, 5 small pieces in the low grammes per square metre portion 44 (44X) of the shape that shreds.To obtained 5 small pieces, use electronic balance (the electronic balance GR-300 that A & D company manufactures respectively, precision: after arithmetic point 4) measure, and be averaged and obtain the average weight of 1 small pieces of low grammes per square metre portion 44 (44X).By the average area of calculated average weight divided by each small pieces of low grammes per square metre portion 44 (44X), and calculate the grammes per square metre of low grammes per square metre portion 41 (44X).

In the absorbent core 41 of diaper 1, high grammes per square metre portion 43 is formed as roughly the same density compared with low grammes per square metre portion 44 (44X, 44Y), or is formed as higher density.

When absorbent commodity is used in such as disposable diaper, the shape of absorptive core 41 always can not be destroyed because of the activity of wearer, and set out to make a small amount of moisture easily contact the viewpoint making the diffusibility of moisture promote with indicator 5, the density of low grammes per square metre portion 44 (44X, 44Y) is more than 50% of the density in high grammes per square metre portion 43, be preferably more than 75%, and be less than 100%, be preferably less than 95%, more specifically, be preferably less than more than 50% 100%, and then be preferably less than more than 75% 95%.

Specifically, the density of low grammes per square metre portion 44 (44X, 44Y) is 0.05g/cm ³above, 0.07g/cm is preferably ³above, and be 0.15g/cm ³below, 0.13g/cm is preferably ³below, more specifically, 0.05g/cm is preferably ³above 0.15g/cm ³below, so be preferably 0.07g/cm ³above 0.13g/cm ³below.In addition, the density in high grammes per square metre portion 43 is 0.05g/cm ³above, 0.07g/cm is preferably ³above, and be 0.15g/cm ³below, 0.13g/cm is preferably ³below, more specifically, 0.05g/cm is preferably ³above 0.15g/cm ³below, so be preferably 0.07g/cm ³above 0.13g/cm ³below.

The grammes per square metre in the high grammes per square metre portion 43 obtained by said method and low-density portion 44 is calculated divided by the respective thickness obtained by said method by the density in high grammes per square metre portion 43 and low grammes per square metre portion 44 (44X, 44Y).

In addition, in diaper 1, between the low grammes per square metre portion 44 (44X, 44Y) and coating member 42 of absorbent core 41, space 9 is formed with.That is, at absorber 4, the sag and swell of absorbent core 41 and the coating member 42 of coated absorbent core 41 is formed through and the space 9 that formed.As mentioned above, in diaper 1, as shown in Figure 1 and Figure 2, low grammes per square metre portion 44 (44X, 44Y) is formed as lattice-shaped in back-sheet 3 side of absorbent core 41 on the whole, to be configured with high grammes per square metre portion 43 in the position of grid hole, the mode that low grammes per square metre portion 44 surrounds high grammes per square metre portion 43 is formed.Thus, in diaper 1, as shown in Figure 1 and Figure 2, the multiple space 9X formed by the low grammes per square metre portion 44X caved in face sheet 2 side and coating member 42, extend continuously along transverse direction (X-direction) respectively corresponding to low grammes per square metre portion 44X, the multiple space 9Y formed by the low grammes per square metre portion 44Y caved in face sheet 2 side and coating member 42, extend along longitudinal direction (Y-direction) respectively continuously corresponding to low grammes per square metre portion 44Y.

As mentioned above, in the present invention, overleaf between sheet material 3 and absorber 4, the indicator 5 of being informed excretion by the change of color is configured with continuously along longitudinal direction (Y-direction).In diaper 1, as shown in Figure 2, indicator 5 is configured between the coating member 42 of absorber 4 and back-sheet 3, and is configured on the skin opposite face of back-sheet 3.The change of the color of indicator 5 can through back-sheet 3 from outside depending on recognizing.The indicator 5 of diaper 1, on transverse direction (X-direction), as shown in Figure 2 from viewed from cross section during diaper 1, is configured in transverse direction (X-direction) central part comprising centre line C L.In addition, the indicator 5 of diaper 1 is on longitudinal direction (Y-direction), and centrally line CL is configured to linearity with striding across crotch C arrival drosal part A and crotch B.In diaper 1, indicator 5 separates with 3 elongated lines the mode arranged at equal intervals and configures on transverse direction (X-direction), but also can be formed by 1, also can be formed by many.In addition, the indicator 5 of diaper 1 strides across crotch C and is configured to linearity with arriving veutro portion A and drosal part B on longitudinal direction (Y-direction), but is at least configured in crotch C, also can be formed throughout the total length of the Y-direction of absorbent core 41.

Even if also there is higher visibility from when dressing from the gap etc. of clothes, and do not hinder the viewpoint of the design of back-sheet to set out, the width W 1 (being the total width of 3 indicators in present embodiment) of indicator 5 is more than 2mm, be preferably more than 3mm, and be below 10mm, be preferably below 8mm, more specifically, be preferably more than 2mm below 10mm, and then be preferably more than 3mm below 8mm.

In addition, as mentioned above, the coating member 42 of diaper 1, as shown in Figure 2, the coated absorbent core 41 in the overlapping portion 420 that the side edge part of back-sheet 3 side of absorbent core 41 formation coating member 42 overlaps each other.Overlapping portion 420 extends in indicator 5 along the bearing of trend (Y-direction) of indicator 5.Overlapping portion 420 on longitudinal direction (Y-direction), throughout absorber 4 endlong centrally line CL be formed in indicator 5.In addition, width W 2 on the transverse direction (X-direction) of overlapping portion 420 is preferably identical with the width W 1 of indicator 5 or wider than the width W 1 of indicator 5, from the view point of absorbing the excremental unnecessary moisture be positioned near indicator 5, the width W 2 of overlapping portion 420 is more than 1.0 relative to the ratio (W2/W1) of the width W 1 of indicator 5, be preferably more than 1.5, and be less than 3.0, be preferably less than 2.5, more specifically, be preferably less than more than 1.0 3.0, and then be preferably less than more than 1.5 2.5.Specifically, the width W 2 of overlapping portion 420 is more than 5mm, is preferably more than 10mm, and is below 30mm, is preferably below 25mm, more specifically, is preferably more than 5mm below 30mm, and then is preferably more than 10mm below 25mm.

Then, to the absorber 4 included by diaper 1, namely comprise the integrally formed and manufacture method that the is absorber 4 of the absorbent core 41 obtained of high grammes per square metre portion 43 (high density) and low grammes per square metre portion 44 (low-density) and be described.

Fig. 4 represents an embodiment of the manufacture method of absorber 4 and wherein used manufacturing installation.The manufacturing installation of absorber 4 comprises: rotating cylinder 50, and it is along arrow R1 direction rotary actuation; Conduit 60, the absorbent material 45 comprising absorbing polymeric of the raw material as absorbent core 41 is supplied to the outer peripheral face of rotating cylinder 50 by it; Transfer roller 70, it is configured in the oblique below in the downstream of rotating cylinder 50, and along arrow R2 direction rotary actuation; Vacuum tank 65, it is configured between conduit 60 in the circumferential direction of rotating cylinder 50 and transfer roller 70; The guipure 75 as breathability parts of lamellar, to configure by the mode between vacuum tank 65 and rotating cylinder 50 and between transfer roller 70 and rotating cylinder 50; With suction conveyor 80, it is configured in the below of transfer roller 70.

As shown in Figure 4, rotating cylinder 50 is formed as cylindric, is subject to the power from motor prime movers, makes the parts forming its outer peripheral face around horizontal rotational shaft.Being formed at the non-rotating part of the inner side (rotation shaft side) of rotating cylinder 50 can by the space 56 of inner pressure relief.In space 56, being connected with the known exhaust apparatus such as drawing fan (non-icon), by making this exhaust apparatus action, negative pressure can being maintained by space 56.On the other hand, in the space 57 and 58 of the inner side (rotation shaft side) of rotating cylinder 50, being connected with can the pipe arrangement (not shown) of air outside suction apparatus.

As shown in Figure 4, at the outer peripheral face of rotating cylinder 50, in direction r 1 to be equally spaced formed with multiple shape cylinder recess 51 corresponding with the shape of the absorbent core 41 that will manufacture.In the bottom surface sections of each cylinder recess 51, as shown in Figure 5, be configured with the web plate 52 being formed with multiple pore, and metal or resinous difficult breathability parts 53.Herein, difficult breathability parts 53 are arranged in the mode of giving prominence on web plate 52, and configure in the mode that the shape and position with above-mentioned low grammes per square metre portion 44 (44X, 44Y) is corresponding.As shown in Figure 5, the region 54 only comprising the web plate 52 marked off by the difficult breathability parts 53 configured in the above-described manner becomes the part corresponding to high grammes per square metre portion 43.In addition, the part not forming the outer peripheral face of the rotating cylinder 50 of a recess 51 is formed by the framework of the rotating cylinder 50 comprising metal rigid body, is non-breathability.

As shown in Figure 4, the end side of conduit 60 covers the outer peripheral face being positioned at the rotating cylinder 50 be maintained on the space 56 of negative pressure, has fibrous material gatherer in another not shown side.Fibrous material gatherer such as comprises destructor, the wood pulp of lamellar is pulverized as solution fiber paper pulp by this destructor, and be fed through in conduit by this solution fiber paper pulp (fibrous material), and be provided with the absorbing polymeric introduction part importing absorbing polymeric in the midway of conduit 60.

Transfer roller 70 comprises the peripheral part of the cylindrical shape with breathability, and is subject to the power from motor prime movers, and its peripheral part is rotated up in R2 side.At the non-rotating part of the inner side (rotation shaft side) of transfer roller 70, being formed can by the space 71 of inner pressure relief.In space 71, being connected with the known exhaust apparatus (not shown) such as drawing fan, by making this exhaust apparatus action, negative pressure can being maintained by space 71.

Vacuum tank 65, on the direction of rotation R1 of rotating cylinder 50, is configured between the end of downstream side 601 of conduit 60 and transfer roller 70.Vacuum tank 65 has the shape of box like, and has the peristome to rotating cylinder 50 direction opening at the position relative with rotating cylinder 50.Vacuum tank 65 is connected with the known exhaust apparatus (not shown) such as drawing fan via exhaustor 67, by the action of this exhaust apparatus, can be maintained negative pressure by vacuum tank 65.

Guipure 75 connects to ring-type by the gas-permeable strip of the band shape with mesh and is formed, and is guided and move continuously on the path of regulation by multiple free roll and transfer roller 70.Guipure 75 is driven by the rotation of transfer roller 70.Guipure 75, during the front by the above-mentioned peristome of vacuum tank 65, contacts with the outer peripheral face of rotating cylinder 50, and transfer roller 70 and rotating cylinder 50 immediate closest near portion, leave from the outer peripheral face of rotating cylinder 50 and shift to transfer roller 70.

Suction conveyor 80 comprises: the gas-permeable strip 83 of ring-type, and it is set up in driven roller 81 and driven voller 82; With vacuum tank 84, it is configured in across gas-permeable strip 83 position relative with transfer roller 70.

Then, the method using the manufacturing installation of above-mentioned absorber to manufacture absorber 4 (absorbent core 41) is continuously described.

First, make to be connected to respectively the space 56 in rotating cylinder 50 and the exhaust apparatus start in vacuum tank 65 and make to become negative pressure in the space 56 in rotating cylinder 50 and vacuum tank 65.Its reason is, by making in this way to become negative pressure in space 56, produces air stream absorbent material 45 being delivered to the outer peripheral face of rotating cylinder 50 in conduit 60.Then, rotating cylinder 50 and transfer roller 70 are rotated, in addition, make suction conveyor 80 action.Then, when making the action of above-mentioned fibrous material gatherer, fibrous material is supplied in conduit 60, and when supplying absorbing polymeric further, this absorbent material 45 becomes along with the air stream of flowing in conduit 60 state of dispersing, and is supplied to the outer peripheral face of rotating cylinder 50.

During the part conveying covered by conduit 60, absorbent material (mixture of fibrous material and absorbing polymeric) 45 is sucked up to the cylinder recess 51 of rotating cylinder 50.As shown in Figure 6, absorbent material 45 is deposited on the web plate 52 in each region 54 of a recess 51 gradually.In the deposit 46 obtained in this way, the accumulating amount that absorbent material 45 is deposited in the absorbent material 45 of position (the difficult corresponding portion of the breathability parts 53) 46a on difficult breathability parts 53 is relatively less, the accumulating amount of the absorbent material 45 of other position (corresponding portion, region 54) 46b becomes many relatively, thus deposit 46 entirety has sag and swell.

Then, when rotating cylinder 50 rotates, when cylinder recess 51 arrives the relative position of vacuum tank 65, the deposit 46 in cylinder recess 51 becomes by the suction from vacuum tank 65 state be adsorbed on guipure 75.Deposit 46 in cylinder recess 51 is transported to the front closest to portion of transfer roller 70 and rotating cylinder 50 in this condition, and at this closest near portion, by the suction from transfer roller 70 side, keep the state being adsorbed in guipure 75 from cylinder recess 51 demoulding, shift on transfer roller 70.

Like this, the deposit 46 with sag and swell on transfer roller 70 is transferred in the lump with guipure 75, keep the state of the guipure 75 be adsorbed on transfer roller 70, be transported to and the junction of suction conveyor 80 (lowest end of transfer roller 70), in this junction, shifted on suction conveyor 80 by the suction of vacuum tank 84.

In the manufacturing installation of the absorber of present embodiment, as shown in Figure 4, comprise cotton paper, the coating member 42 of hydrophilic non-woven fabrics be fed to mounting deposit 46 before suction conveyor 80 on, deposit 46 is transferred on coating member 42.And, and then utilize turnover board (not shown) to fold coating member 42, after utilizing the coated deposit 46 of coating member 42, cut off by the deposit 46 of the coated state of coating member 42 at predetermined intervals, manufacture the absorber precursor 49 cutting into the size of an absorber continuously.

And, in the manufacturing installation of the absorber of present embodiment, compressed the absorber precursor 49 obtained in this way by pressing mechanism 90, the thickness product polar region of the deposit 46 of formation absorber precursor 49 is reduced, thus obtain the absorber 4 (absorbent core 41) of target.As shown in Figure 4, pressing mechanism 90 is configured to: the pair of rolls 91,92 comprising the surface smoothing of at least one, can pressurize, compress in a thickness direction the pressurized thing be directed between roller 91,92 from upper and lower surface.

When utilizing pressing mechanism 90 to compress deposit 46, than absorbent material 45, the relatively less and position that thickness is less (the difficult corresponding portion of breathability parts 53) 46a compares and is subject to stronger compression relatively many and position (corresponding portion, the region 54) 46b that thickness is larger of absorbent material.Consequently, in the absorber 4 (absorbent core 41) utilized manufactured by above-mentioned manufacturing installation, position (corresponding portion, the region 54) 46b (protuberance) of deposit 46 becomes the relatively high high grammes per square metre portion 43 of absorbent core 41 Midst density, and position (the difficult corresponding portion of the breathability parts 53) 46a (recess) of deposit 46 becomes the relatively low low grammes per square metre portion 44 of absorbent core 41 Midst density.

Between the face sheet 2 of diaper 1 and absorber 4, between absorber 4 and back-sheet 3, utilize according to selecting, the bonding agent (hot-melt adhesive etc.) of the pattern coating such as threaded line, striped and interfixing.

Especially between absorber 4 and back-sheet 3, in diaper 1, as shown in Figure 2, absorber 4 is fixed via bonding agent 10 and back-sheet 3 in transverse direction (X-direction) two foreign side of indicator 5, does not fix with back-sheet 3 in the region of indicator 5.Namely, as shown in Figure 2, coating member 42 and the back-sheet 3 of absorber 4 are not fixed in the region of indicator 5, and each bonding agent 10 extended along longitudinal direction (Y-direction) only via transverse direction (X-direction) two foreign side being configured in indicator 5 is fixed.

The formation material of the disposable diaper 1 of present embodiment is described.

As face sheet 2, back-sheet 3, three-dimensional gauffer formation sheet material 62, as long as the material in the absorbent commodities such as disposable diaper usually can be used in, just can use with no particular limitation.Such as face sheet 2, the non-woven fabrics of liquid permeability, perforated film, their laminated body etc. can be used, as back-sheet 3, the laminated body etc. of resin molding or resin molding and non-woven fabrics can be used.As three-dimensional gauffer formation sheet material 62, the thin film of retractility, non-woven fabrics, fabric or their laminated sheet etc. can be used.

As pull stap 7, as long as the material in the absorbent commodities such as disposable diaper usually can be used in, just can use with no particular limitation.Such as can use hook face (sunny side) parts etc. in " Magic Tape (registered trade mark) " (manufacture of Kuraray (Kuraray) company), " Quicklon (registered trade mark) " (manufacture of YKK company), " Magi Cloth (registered trade mark) " (manufacture of Kanebo Bell Touch company) etc.

As the absorbent core 41 forming absorber 4, the granule of absorbing polymeric can be used to remain on the parts etc. formed in the aggregation of the fibers such as paper pulp fiber.As the coating member 42 forming absorber 4, can use and comprise hydrophilic sheet, the cored sheet material etc. of the thin paper (cotton paper) of such as water penetration, the non-woven fabrics of water penetration.

As elastomeric element 61, leg elastic members 63 and waist elastic members 64 that three-dimensional gauffer is formed, the wire loft material of polyethylene-alphaolefin copolymers such as comprising natural rubber, polyurethane, polystyrene-poly isoprene copolymer, polystyrene-polybutadiene copolymer, ethyl acrylate-ethylene etc. can be used.

As indicator 5, as long as the material in the absorbent commodities such as disposable diaper usually can be used in, just can use with no particular limitation.Such as can be used on other sheet material such as thin film or non-woven fabrics different from back-sheet 3 or directly overleaf on sheet material 3, be coated with develop the color by contacting with Excreta, the colored materials of variable color or colour killing and the parts that obtain.Such as colored materials, the mixture etc. of pH value indicator and oxidized compound can be used.

Action effect when using the disposable diaper 1 of the embodiment of the invention described above is described.

As shown in Figure 1 and Figure 2, the side being applied with indicator 5 of the absorbent core 41 of diaper 1 sheet material 3 is overleaf formed with sag and swell.In other words, in back-sheet 3 side relative with indicator 5, be formed with the high grammes per square metre portion 43 of absorbent core 41 and low grammes per square metre portion 44 and alternately configure and the sag and swell formed along the bearing of trend (Y-direction) of indicator 5.Therefore, it is possible to make indicator 5 easily variable color.In addition, as shown in Figure 3, diaper 1 is formed with space 9 between the recess and coating member 42 in the low grammes per square metre portion 44 of absorbent core 41, and low grammes per square metre portion 44 connects with space 9.Therefore, during the wearing of diaper 1, when wearer discharges Excreta, even if excremental moisture is a small amount of, this moisture also easily can arrive indicator 5 by spatial portion 9, thus makes indicator 5 easily variable color.Due to indicator 5 easily variable color like this, therefore, it is possible to meet the demand of also wishing more changing babies' napkin when Excreta is a small amount of.In addition, in diaper 1, high grammes per square metre portion 43 and low grammes per square metre portion 44 alternately configure along the bearing of trend (Y-direction) of indicator 5, and therefore multiple space 9 being formed in the position corresponding with low grammes per square metre portion 44 is formed discontinuously along the bearing of trend (Y-direction) of indicator 5.Which therefore, it is possible to easily make indicator 5 variable color successively with the movement of excremental moisture, thus be easy to depending on recognizing indicator 5 variable color from the side of veutro portion A and drosal part B.If can like this depending on recognizing variable color from which side of veutro portion A and drosal part B, then such as when being speculated as urine during variable color from A side, veutro portion, when being speculated as soft stool during variable color from drosal part B side.

In addition, as shown in Figure 2 and Figure 3, the overlapping portion 420 of the hydrophilic coating member 42 of the coated absorbent core 41 of diaper 1 extends in indicator 5 along the bearing of trend (Y-direction) of indicator 5.Therefore, it is possible to play following effect: the unnecessary moisture that can utilize overlapping portion 420 absorbing and excreting thing, the false judgment causing urine volume how many because unnecessary moisture diffusion causes the variable color portion of indicator 5 to expand can be prevented.

In addition, as shown in Figure 2, the absorber 4 of diaper 1, in transverse direction (X-direction) two foreign side of indicator 5, is fixed via bonding agent 10 and back-sheet 3, does not fix with back-sheet 3 in the region of indicator 5.Therefore, indicator 5 and the contact of moisture can not be hindered because of bonding agent 10, therefore play following effect: the function that can realize indicator 5 variable color because of the moisture of less amount.

The disposable diaper of one embodiment of absorbent commodity of the present invention, not by any restriction of the disposable diaper of above-mentioned embodiment, can suitably change.

Such as in the disposable diaper 1 of above-mentioned embodiment, as shown in Figure 1, indicator 5 extends, as long as but extend continuously along longitudinal direction continuously along the direction (Y-direction) being parallel to centre line C L.That is, indicator 5 both can extend along longitudinal direction is oblique obliquely, also can extend along longitudinal direction curve-like.

In addition, in the disposable diaper 1 of above-mentioned embodiment, as shown in Figure 1, form the low grammes per square metre portion 44 of the absorbent core 41 of absorber 4, the low grammes per square metre portion 44Y of the wire utilizing the low grammes per square metre portion 44X of the wire extended along transverse direction (X-direction) and extend along longitudinal direction (Y-direction) and be formed as lattice-shaped on the whole, but be not limited to the shape of this lattice-shaped.

In addition, in the disposable diaper 1 of above-mentioned embodiment, as shown in Figure 1, Figure 7 shows, the absorbent core 41 of absorber 4 has the block-shaped region 411 of rectangle longer on longitudinal direction (Y-direction), but also can comprise the absorbent core 41A ~ 41C shown in Fig. 8 ~ Figure 10 and replace this kind of absorbent core 41.About the absorbent core 41A ~ 41C shown in Fig. 8 ~ Figure 10, for not specified aspect, suitably apply the explanation that the absorbent core 41 included by above-mentioned diaper 1 is described in detail.In addition, in figs. 8 to 10, identical Reference numeral is indicated to the parts identical with Fig. 1, Fig. 7.Absorbent core 41A ~ 41C shown in Fig. 8 ~ Figure 10 also has the non-boxed area 412 configured throughout the periphery in block-shaped region 411 respectively.In each of absorbent core 41A ~ 41C shown in Fig. 8 ~ Figure 10, the both side edges of veutro portion A and the both side edges of drosal part B are more stretched out to transverse direction (X-direction) foreign side than the both side edges of crotch C respectively, there is the block-shaped region 411 of the shape being formed as longitudinal direction (Y-direction) central part inside side shrinking on the whole, and there is the non-boxed area 412 of the shape being formed as longitudinal direction (Y-direction) central part inside side shrinking.

The block-shaped region 411 of the absorbent core 41A shown in Fig. 8 is more specifically described.In absorbent core 41A, as shown in Figure 8, the drosal part 411b in block-shaped region 411 is formed as follows: by the low grammes per square metre portion 44X extended along transverse direction (X-direction) be configured with 4 and the sag and swell that formed regularly along the high grammes per square metre portion 43 that the low grammes per square metre portion 44Y that longitudinal direction (Y-direction) extends marks off, regularly at upper configuration 4 row of longitudinal direction (Y-direction) on transverse direction (X-direction).In addition, as shown in Figure 8, the crotch 411c in block-shaped region 411 is formed as follows: by the low grammes per square metre portion 44X extended along transverse direction (X-direction) be configured with 3 and the sag and swell that formed regularly along the high grammes per square metre portion 43 that the low grammes per square metre portion 44Y that longitudinal direction (Y-direction) extends marks off, regularly at upper configuration 7 row of longitudinal direction (Y-direction) on transverse direction (X-direction).In addition, as shown in Figure 8, the veutro portion 411a in block-shaped region 411 is formed as follows: by the low grammes per square metre portion 44X extended along transverse direction (X-direction) be configured with 4 and the sag and swell that formed regularly along the high grammes per square metre portion 43 that the low grammes per square metre portion 44Y that longitudinal direction (Y-direction) extends marks off, regularly at upper configuration 4 row of longitudinal direction (Y-direction) on transverse direction (X-direction).In the block-shaped region 411 of absorbent core 41B, as shown in Figure 8, arbitrary low grammes per square metre portion 44Y extended along longitudinal direction (Y-direction) all less than from veutro portion A until drosal part B linearity configuration.

The block-shaped region 411 of the absorbent core 41B shown in Fig. 9 is more specifically described.In absorbent core 41B, as shown in Figure 9, the drosal part 411b in block-shaped region 411 is formed as follows: by the low grammes per square metre portion 44X extended along transverse direction (X-direction) be configured with 5 regularly along the high grammes per square metre portion 43 that the low grammes per square metre portion 44Y that longitudinal direction (Y-direction) extends marks off and the sag and swell formed on transverse direction (X-direction), regularly at upper configuration 3 row of longitudinal direction (Y-direction), and then high grammes per square metre portion 43 is configured with sag and swell configuration 1 row on longitudinal direction (Y-direction) regularly of 4 and formation regularly on transverse direction (X-direction).In addition, as shown in Figure 9, the crotch 411c in block-shaped region 411 is formed as follows: by the low grammes per square metre portion 44X extended along transverse direction (X-direction) be configured with 3 and the sag and swell that formed regularly along the high grammes per square metre portion 43 that the low grammes per square metre portion 44Y that longitudinal direction (Y-direction) extends marks off, regularly at upper configuration 7 row of longitudinal direction (Y-direction) on transverse direction (X-direction).In addition, as shown in Figure 9, the veutro portion 411a in block-shaped region 411 is formed as follows: by the low grammes per square metre portion 44X extended along transverse direction (X-direction) be configured with 4 regularly along the high grammes per square metre portion 43 that the low grammes per square metre portion 44Y that longitudinal direction (Y-direction) extends marks off and the sag and swell formed on transverse direction (X-direction), configuration 1 row on longitudinal direction (Y-direction) regularly, and then high grammes per square metre portion 43 is configured with sag and swell configuration 3 row on longitudinal direction (Y-direction) regularly of 5 and formation regularly on transverse direction (X-direction).In the block-shaped region 411 of absorbent core 41B, as shown in Figure 9, arbitrary low grammes per square metre portion 44Y extended along longitudinal direction (Y-direction) all less than from veutro portion A until drosal part B linearity configuration.

The block-shaped region 411 of the absorbent core 41C shown in Figure 10 is more specifically described.In absorbent core 41C, as shown in Figure 10, the drosal part 411b in block-shaped region 411 is formed as follows: by the low grammes per square metre portion 44X extended along transverse direction (X-direction) be configured with 6 regularly along the high grammes per square metre portion 43 that the low grammes per square metre portion 44Y that longitudinal direction (Y-direction) extends marks off and the sag and swell formed on transverse direction (X-direction), regularly at upper configuration 3 row of longitudinal direction (Y-direction), and then high grammes per square metre portion 43 is configured with sag and swell configuration 1 row on longitudinal direction (Y-direction) regularly of 4 and formation regularly on transverse direction (X-direction).In addition, as shown in Figure 10, the crotch 411c in block-shaped region 411 is formed as follows: by the low grammes per square metre portion 44X extended along transverse direction (X-direction) be configured with 2 and the sag and swell that formed regularly along the high grammes per square metre portion 43 that the low grammes per square metre portion 44Y that longitudinal direction (Y-direction) extends marks off, regularly at upper configuration 7 row of longitudinal direction (Y-direction) on transverse direction (X-direction).In addition, as shown in Figure 10, the veutro portion 411a in block-shaped region 411 is formed as follows: by the low grammes per square metre portion 44X extended along transverse direction (X-direction) be configured with 4 regularly along the high grammes per square metre portion 43 that the low grammes per square metre portion 44Y that longitudinal direction (Y-direction) extends marks off and the sag and swell formed on transverse direction (X-direction), configuration 1 row on longitudinal direction (Y-direction) regularly, and then high grammes per square metre portion 43 is configured with sag and swell configuration 3 row on longitudinal direction (Y-direction) regularly of 6 and formation regularly on transverse direction (X-direction).In the block-shaped region 411 of absorbent core 41C, as shown in Figure 10,3 in 7 low grammes per square metre portion 44Y extended along longitudinal direction (Y-direction) respectively from veutro portion A until the configuration of drosal part B linearity.

In addition, as shown in Figure 1, the disposable diaper 1 of above-mentioned embodiment is the disposable diaper of deploying type, but also can be the disposable diaper of pants type.

About above-mentioned embodiment, and then following absorbent commodity is disclosed.

< 1 > absorbent commodity, its absorber that there is the face sheet being configured in skin opposite face side, the back-sheet being configured in non-skin opposite face side and be configured in the lengthwise between these two sheet materials, between this back-sheet and this absorber, longitudinal direction is configured with the indicator of being informed excretion situation by the change of color continuously, in this absorbent commodity

Above-mentioned absorber has the absorbent core containing absorbing polymeric,

In above-mentioned absorbent core, the high grammes per square metre portion of protruding to above-mentioned back-sheet side that grammes per square metre is relatively high and be adjacent to this high grammes per square metre portion and relatively low alternately being formed at longitudinal direction from the low grammes per square metre portion of above-mentioned back-sheet side direction above-mentioned face sheet side depression of grammes per square metre, this high grammes per square metre portion and this low grammes per square metre portion are integrally formed, be formed with above-mentioned high grammes per square metre portion and above-mentioned low grammes per square metre portion replace the sag and swell of configuration at the bearing of trend of this indicator in the side being applied in above-mentioned indicator of above-mentioned back-sheet.

Absorbent commodity as described in absorbent commodity above-mentioned < 1 > that < 2 > records as claim 1, wherein, it is coated that above-mentioned absorbent core is wrapped by part, between the above-mentioned low grammes per square metre portion and the above-mentioned coating member of above-mentioned back-sheet side of above-mentioned absorbent core, be formed with space.

The absorbent commodity of < 3 > as described in above-mentioned < 1 > or < 2 >, wherein, when overlooking, the average length of the bearing of trend of the above-mentioned indicator in above-mentioned low grammes per square metre portion is shorter than the average length of the bearing of trend of the above-mentioned indicator in above-mentioned high grammes per square metre portion.

The absorbent commodity of < 4 > as described in above-mentioned < 3 >, wherein, the above-mentioned average length in above-mentioned low grammes per square metre portion is the length of less than more than 3% 20% of the above-mentioned average length in above-mentioned high grammes per square metre portion.

The absorbent commodity of < 5 > according to any one of above-mentioned < 1 > to < 4 >, wherein, the grammes per square metre in above-mentioned low grammes per square metre portion is the grammes per square metre of less than more than 20% 80% of the grammes per square metre in above-mentioned high grammes per square metre portion.

The absorbent commodity of < 6 > according to any one of above-mentioned < 1 > to < 5 >, wherein, above-mentioned coating member is hydrophilic sheet

The mode of the overlapping portion that above-mentioned coating member overlaps each other with the side edge part forming this coating member in the above-mentioned back-sheet side of above-mentioned absorbent core, this absorbent core coated,

Above-mentioned overlapping portion extends in this indicator along the bearing of trend of above-mentioned indicator.

The absorbent commodity of < 7 > according to any one of above-mentioned < 1 > to < 6 >, wherein, above-mentioned absorber is fixed by bonding agent and above-mentioned back-sheet outside the transverse direction two of above-mentioned indicator, does not fix with this back-sheet in the region of this indicator.

The absorbent commodity of < 8 > according to any one of above-mentioned < 1 > to < 7 >, wherein, in above-mentioned absorbent commodity, the left and right sides edge in veutro portion and the left and right sides edge of drosal part more extend than the left and right sides edge of crotch respectively outside transverse direction, the left and right sides edge of crotch bends to convex inside transverse direction, there is the shape of longitudinal direction central part shrinking to the inside as a whole, above-mentioned face sheet and above-mentioned back-sheet extend laterally from the left and right sides edge of above-mentioned absorber and rear and front end edge respectively, the size of the transverse direction of this face sheet is less than the size of the transverse direction of this back-sheet.

The absorbent commodity of < 9 > according to any one of above-mentioned < 1 > to < 8 >, wherein, above-mentioned absorber is formed by the absorbent core of the longer liquid retainability of the coated longitudinal direction of above-mentioned coating member by the hydrophilic sheet as liquid permeability.

The absorbent commodity of < 10 > according to any one of above-mentioned < 1 > to < 9 >, wherein, the above-mentioned low grammes per square metre portion of above-mentioned absorbent core is on the thickness direction of above-mentioned absorbent commodity, bias is in above-mentioned face sheet side, and this face sheet side of this absorbent core is smooth.

The absorbent commodity of < 11 > according to any one of above-mentioned < 1 > to < 10 >, wherein, on longitudinal direction, the average length in above-mentioned low grammes per square metre portion is less than more than 5% 15% of the average length in above-mentioned high grammes per square metre portion.

The absorbent commodity of < 12 > according to any one of above-mentioned < 1 > to < 11 >, wherein, above-mentioned indicator is configured between the above-mentioned coating member of above-mentioned absorber and above-mentioned back-sheet, be configured on the skin opposite face of this back-sheet, the color change of this indicator can through this back-sheet externally visibly.

The absorbent commodity of < 13 > according to any one of above-mentioned < 1 > to < 12 >, wherein, viewed from cross section during above-mentioned absorbent commodity, above-mentioned indicator is configured in the transverse direction central part comprising centrage in the transverse direction.

The absorbent commodity of < 14 > according to any one of above-mentioned < 1 > to < 13 >, wherein, above-mentioned indicator strides across crotch until drosal part and crotch on longitudinal direction, is configured to linearity along centrage.

The absorbent commodity of < 15 > according to any one of above-mentioned < 1 > to < 14 >, wherein, the mode that above-mentioned indicator separates equal intervals arrangement in the transverse direction with 3 elongated lines configures.

The absorbent commodity of < 16 > according to any one of above-mentioned < 1 > to < 15 >, wherein, the width of above-mentioned indicator is more than 2mm below 10mm, or more than 3mm below 8mm.

The absorbent commodity of < 17 > according to any one of above-mentioned < 1 > to < 16 >, wherein, the mode of the overlapping portion that above-mentioned coating member overlaps each other with the side edge part forming this coating member in the above-mentioned back-sheet side of above-mentioned absorbent core, this absorbent core coated, above-mentioned overlapping portion extends in this indicator along the bearing of trend of above-mentioned indicator, on longitudinal direction, this overlapping portion is formed in this indicator throughout above-mentioned absorber endlong along centrage, in the transverse direction, the width of this overlapping portion is identical with the width of this indicator or wider than the width of this indicator, the width W 2 of this overlapping portion 420 is to the ratio (width of the width/indicator 5 of overlapping portion 420) of the width W 1 of this indicator 5, be 1.0 ~ 3.0, or 1.5 ~ 2.5.

The absorbent commodity of < 18 > according to any one of above-mentioned < 1 > to < 17 >, wherein, as the above-mentioned absorbent core forming above-mentioned absorber, be used in the granule maintaining absorbing polymeric in the fiber assembly of paper pulp fiber etc. and the parts obtained, as the above-mentioned coating member forming this absorber, use the cored sheet material comprising hydrophilic sheet, water penetration thin paper, water penetration non-woven fabrics.

The absorbent commodity of < 19 > according to any one of above-mentioned < 1 > to < 18 >, wherein, as above-mentioned indicator, be used on the sheet materials such as the film different from above-mentioned back-sheet or non-woven fabrics or directly in this back-sheet, coating to produce color, the colored materials of variable color or colour killing and the parts that obtain by contacting with Excreta, as colored materials, use the mixture of pH indicator and oxidized compound.

The absorbent commodity of < 20 > according to any one of above-mentioned < 1 > to < 19 >, wherein, above-mentioned absorbent commodity is the disposable diaper of deploying type.

The absorbent commodity of < 21 > as described in above-mentioned < 20 >, wherein, the edge, the left and right sides of drosal part is provided with a pair pull stap, being provided with at the outer surface in veutro portion makes taking of this pull stap set be with, the both sides along longitudinal direction of above-mentioned absorbent commodity each in, configure at the sidepiece of above-mentioned face sheet and fixedly there is the three-dimensional gauffer formation sheet material of the elastomeric element fixed with elongation state on longitudinal direction, form a pair three-dimensional gauffer thus, the both sides along longitudinal direction of this absorbent commodity each in, multiple leg elastic members that leg creases is formed are configured to elongation state on longitudinal direction, leg creases is formed by the contraction of this leg elastic members, in the longitudinal direction end of the drosal part side of this absorbent commodity, the waist elastic members that waist gauffer is formed is configured to elongation state in the transverse direction, waist gauffer is formed by the contraction of this waist elastic members.

The absorbent commodity of < 22 > as described in above-mentioned < 21 >, wherein, as above-mentioned face sheet, use the non-woven fabrics of liquid permeability, apertured film or their laminated body, as above-mentioned back-sheet, use the laminated body of resin molding or resin molding and non-woven fabrics, as above-mentioned three-dimensional gauffer formation sheet material, use retractility film, non-woven fabrics, fabric or their laminated sheet.

The absorbent commodity of < 23 > as described in above-mentioned < 21 > or < 22 >, wherein, as above-mentioned three-dimensional gauffer formation elastomeric element, above-mentioned leg elastic members and above-mentioned waist elastic members, use the loft material of the wire formed by the polyethylene-alphaolefin copolymer of natural rubber, polyurethane, polystyrene-poly isoprene copolymer, polystyrene-polybutadiene copolymer, ethyl acrylate-ethylene.

The absorbent commodity of < 24 > according to any one of above-mentioned < 1 > to < 19 >, wherein, above-mentioned absorbent commodity is the disposable diaper of pants type.

Industrial utilizability

According to absorbent commodity of the present invention, when excremental moisture is a small amount of, also easily indicator discoloration can be made.Like this, the easy variable color of indicator, therefore, it is possible to meet the demand of also wishing more changing babies' napkin when Excreta is a small amount of.In addition, according to absorbent commodity of the present invention, easily depending on recognizing indicator variable color from which side of veutro portion and drosal part, if being veutro portion, easily judging it is urine, if be drosal part, easily judging it is soft stool.

Claims

1. an absorbent commodity, its absorber that there is the face sheet being configured in skin opposite face side, the back-sheet being configured in non-skin opposite face side and be configured in the lengthwise between these two sheet materials, between this back-sheet and this absorber, longitudinal direction is configured with the indicator of being informed excretion situation by the change of color continuously, and the feature of this absorbent commodity is:

Described absorber has the absorbent core containing absorbing polymeric,

In described absorbent core, the high grammes per square metre portion of protruding to described back-sheet side that grammes per square metre is relatively high and be adjacent to this high grammes per square metre portion and relatively low alternately being formed at longitudinal direction from the low grammes per square metre portion of face sheet side depression described in described back-sheet side direction of grammes per square metre, this high grammes per square metre portion and this low grammes per square metre portion are integrally formed, be formed with described high grammes per square metre portion and described low grammes per square metre portion replace the sag and swell of configuration at the bearing of trend of this indicator in the side being applied in described indicator of described back-sheet.

2. absorbent commodity as claimed in claim 1, is characterized in that:

It is coated that described absorbent core is wrapped by part, between the described low grammes per square metre portion and the described coating member of described back-sheet side of described absorbent core, be formed with space.

3. absorbent commodity as claimed in claim 1 or 2, is characterized in that:

When overlooking, the average length of the bearing of trend of the described indicator in described low grammes per square metre portion is shorter than the average length of the bearing of trend of the described indicator in described high grammes per square metre portion.

4. absorbent commodity as claimed in claim 3, is characterized in that:

The described average length in described low grammes per square metre portion is the length of less than more than 3% 20% of the described average length in described high grammes per square metre portion.

5. the absorbent commodity according to any one of Claims 1 to 4, is characterized in that:

The grammes per square metre in described low grammes per square metre portion is the grammes per square metre of less than more than 20% 80% of the grammes per square metre in described high grammes per square metre portion.

6. the absorbent commodity according to any one of Claims 1 to 5, is characterized in that:

Described coating member is hydrophilic sheet,

The mode of the overlapping portion that described coating member overlaps each other with the side edge part forming this coating member in the described back-sheet side of described absorbent core, this absorbent core coated,

Described overlapping portion extends in this indicator along the bearing of trend of described indicator.

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

Described absorber is fixed by bonding agent and described back-sheet outside the transverse direction two of described indicator, does not fix with this back-sheet in the region of this indicator.