CN107427391A

CN107427391A - Absorbent commodity

Info

Publication number: CN107427391A
Application number: CN201580078449.2A
Authority: CN
Inventors: 工藤淳; 北川雅史; 谷口健太; 秋山纱惠子; 寺杣望
Original assignee: Unicharm Corp
Current assignee: Unicharm Corp
Priority date: 2015-03-31
Filing date: 2015-12-24
Publication date: 2017-12-01
Anticipated expiration: 2035-12-24
Also published as: JP6373216B2; KR20170132852A; MY170227A; WO2016157653A1; CN107427391B; KR101913534B1; JP2016189851A

Abstract

Absorbent commodity has orthogonal length direction, width and thickness direction, and has absorber, and absorber is provided with the absorbent core including liquidabsorbing fibres.Absorber is provided with broken curve, and broken curve guides absorber in a manner of making absorber towards the skin side on thickness direction highlightedly warpage and extended along its length.Absorbent core has low-density part, skin side layer and non-skin side layer, the position that low-density part shows the distribution density of the liquidabsorbing fibres lower than peripheral part and is formed in the direction of the width where broken curve, skin side layer is located at the skin side on thickness direction relative to low-density part, and non-skin side layer is located at the non-skin side on thickness direction relative to low-density part.However, low-density part there are liquidabsorbing fibres.Skin side layer warpage in a manner of the skin side being partially toward on thickness direction corresponding with broken curve protrudes.

Description

Absorbent commodity

Technical field

The present invention relates to the absorbent commodity of sanitary napkin etc..

Background technology

As the absorbent commodity for the drained liquid for absorbing menses etc., sanitary napkin is known.These sanitary napkin bags Include length direction intersected with each other, width and thickness direction.In addition, these sanitary napkins liquid permeability positive dough sheet with it is non- Including the use of absorbent core of the liquidabsorbing fibres as main material between the back sheet of fluidity.

Prior art literature

Patent document

Patent document 1：Japanese Unexamined Patent Publication 2012-157459 publications

The content of the invention

Problems to be solved by the invention

As the example of this sanitary napkin, following sanitary napkin 1 ' is given：It includes the broken curve extended along its length LB, and along broken curve LB to the skin side warpage on thickness direction and prominent.Shown as when from front Shown in Fig. 1 of schematic diagram, when the sanitary napkin 1 ' fits to crotch 201K, the part energy prominent to skin side along broken curve LB Enough labias with the discharge port 201He of introitus etc. places contact, or can enter between labia.Thus, Excellent stickiness can be realized.

However, when in order that the sanitary napkin 1 ' is bonded against crotch 201K and will be arranged at crotch part and be fixed with this and defend The underwear (not shown) of the underpants of raw towel 1 ' etc. towards crotch 201K pull up when, the sanitary napkin 1 ' in some cases Shape may change over the shape in addition to the above-mentioned shape prominent to skin side.In addition, worn in the sanitary napkin 1 ' When, when such as by clamp the thigh of wearer 201 and it is caused from outside towards width on the power of inner side act on During the sanitary napkin 1 ', the shape of sanitary napkin 1 ' may also can change over the shape in addition to the above-mentioned shape prominent to skin side Shape.

When this change of shape occurs, the above-mentioned part prominent to skin side of sanitary napkin 1 ' suitably connects with labia Touch or will become impossible between labia, as a result, stickiness will be deteriorated.

Meanwhile for sanitary napkin 1 ', in addition to above-mentioned stickiness, also require the superb absorbency of drained liquid.Change speech It, it is unacceptable to sacrifice absorbability to improve above-mentioned stickiness.

In view of above-mentioned condition has made the present invention, the purpose of the present invention be allow the shape of absorbent commodity is steady Surely while maintaining absorbent commodity along the broken curve warpage shape prominent to skin side, excellent absorbability is realized.

The solution used to solve the problem

To achieve these goals, main aspect of the invention is a kind of absorbent commodity, and it has orthogonal length Direction, width and thickness direction are spent, the absorbent commodity includes absorber, and the absorber includes having liquid absorption The absorbent core of property fiber,

The absorber is provided with the broken curve along the length direction, for guiding the absorber to the thickness Skin side on direction highlightedly warpage,

The absorbent core includes low-density part, skin side layer and non-skin side layer, and the low-density part is described It is located at the opening position of the broken curve on width and is less than peripheral part for the distribution density of the liquidabsorbing fibres Liquidabsorbing fibres distribution density part, the skin side layer is located at the thickness relative to the low-density part Skin side on direction, non-skin side layer are located at the non-skin on the thickness direction relative to the low-density part Side,

The low-density part there are the liquidabsorbing fibres,

The skin side layer has a part corresponding with the broken curve, and the part is with to the skin on the thickness direction The mode warpage that side protrudes.

By this specification, referring to the drawings, further feature of the invention will be clear.

The effect of invention

In accordance with the invention it is possible to the dimensionally stable of absorbent commodity is maintained absorbent commodity along broken curve to While the warpage shape that skin side protrudes, excellent absorbability is realized.

Brief description of the drawings

Fig. 1 be for explain can in a manner of prominent to the skin side on thickness direction defending along broken curve LB warpages Raw towel 1 ' realizes the schematic elevational view of excellent stickiness.

Fig. 2 is the sanitary napkin 1 of the example of the absorbent commodity as present embodiment when from the skin on thickness direction Schematic plan view when side is observed.

Fig. 3 is the schematic plan view observed from the non-skin side on thickness direction of identical sanitary napkin 1.

Fig. 4 be along Fig. 2 in arrow IV-IV intercept schematic, exploded.

Fig. 5 is the schematic plan view observed from the non-skin side on thickness direction of absorber 10.

Fig. 6 A are the schematic diagrames intercepted along the arrow VI-VI in Fig. 2 in the absorber 10 of folded state.

Fig. 6 B are the schematic diagrames intercepted along the arrow VI-VI in Fig. 2 in the sanitary napkin 1 of folded state.

Fig. 7 A are the schematic diagrames for the section that absorbent core 11 is cut off along width, in addition, Fig. 7 A are to show this The enlarged diagram of part corresponding with broken curve LB at section.

Fig. 7 B are the electron micrographs of the part B in Fig. 7 A.

Fig. 8 shows the data of the experiment performed by the favourable scope for representing the fibre density for obtaining absorbent core 11 With the table 1 of result.

Fig. 9 shows the condition for representing and obtaining and the maintenance of absorber 10 being to the shape of precipitous warpage at broken curve LB The data of performed experiment and the table 2 of result.

Figure 10 A are the schematic plan views for being used to measure the test film of anti-warpage degree provided for the experiment.

Figure 10 B are the arrow plots intercepted along the line B-B in Figure 10 A.

Figure 11 A are the schematic elevational views for evaluating the test film for the stability for maintaining chevron collapsed shape.

Figure 11 B are the schematic elevational views for the identical test piece that chevron collapsed shape has circularly deformed by deadweight.

Embodiment

By the record of the specification and drawings, at least following item will be clear.

A kind of absorbent commodity, it has orthogonal length direction, width and thickness direction, the absorbability Article includes absorber, and the absorber includes the absorbent core with liquidabsorbing fibres,

The low-density part there are the liquidabsorbing fibres,

, can be with absorbent commodity along the above-mentioned broken curve warpage shape prominent to skin side according to the absorbent commodity Stably maintain the shape of absorbent commodity.Details is as follows.First, at the above-mentioned skin side layer of absorbent core, with broken curve Corresponding part is to skin side warpage and prominent.Therefore, it is possible to produce the fold prominent to skin side at absorbent commodity.It is low Density portion is located at the non-skin side of skin side layer.Therefore, hypothetically, when absorbent commodity is worn, when such as logical Cross clamp thigh and it is caused from outside towards width on the power of inner side when acting on the article, also can be in maintenance While stating the warpage shape prominent to skin side, make skin side layer further notable warpage.In other words, when skin side layer enters one When walking notable warpage, can be quickly removed positioned at the part of inner circumferential side to low-density part at skin side layer.This is avoided Following situation：It is above-mentioned to be shifted positioned at the part of inner circumferential side when making skin side layer further notable warpage, it is big so as to show Resistance.Therefore, it is possible to the dimensionally stable of absorbent commodity be maintained along the broken curve flexagon prominent to skin side Shape.

At low-density part, liquidabsorbing fibres are there are.This excretion that will can be absorbed at skin side layer Liquid promptly guides non-skin side layer into.Then, this can be such that absorbed drained liquid through-thickness promptly spreads.Knot Fruit, absorbent commodity can realize excellent absorbability.

In above-mentioned absorbent commodity,

Preferably, non-skin side layer is flexed into M word shapes, wherein being located at the folding in the layer of the non-skin side The each several part of curve both sides is prominent to the skin side on the thickness direction, and the part between each several part is to the thickness The non-skin side spent on direction protrudes.

According to the absorbent commodity, when absorbent commodity is worn, when such as by clamping thigh and caused When the power of inner side on from outside towards width acts on the article, it can also make while above-mentioned M word shapes are maintained Above-mentioned non-skin side layer promptly reduces and deformed in the width direction.Therefore, this positively prevents non-skin side layer to maintaining Skin side layer is hindered by being produced to the folded state of skin side warpage in a manner of prominent.Thus, skin side layer can be stably Maintain above-mentioned warpage shape.

In above-mentioned absorbent commodity,

Preferably, the average value of the fibre density of the liquidabsorbing fibres of the absorbent core is 0.092g/ cm³More than.

According to the absorbent commodity, because the average value of the above-mentioned fibre density of absorbent core is maintained at 0.092g/cm³With On, so core folds at above-mentioned broken curve, so as to positively form above-mentioned low-density part.

In above-mentioned absorbent commodity,

Preferably, when the skin side layer on the width opening position corresponding with the broken curve Size on the thickness direction position corresponding with the broken curve on the width with non-skin side layer During size on the thickness direction at place, the size of the skin side layer is more than the size of non-skin side layer.

Big based on the size on thickness direction according to the absorbent commodity, at skin side layer, the absorption of drained liquid is held Amount is big.Therefore, the skin side layer can promptly absorb the row from the menses of the discharge port of introitus etc. excretion etc. Drainage body, so that the drained liquid spreads to peripheral part of non-skin side layer etc..As a result, it is possible to effectively prevent from draining Liquid leaks from absorbent commodity.

In above-mentioned absorbent commodity,

Preferably, the absorber includes the skin lateral plate for being fixed on the skin side of the absorbent core, and

The skin lateral plate is with the absorbent core integratedly along the broken curve warpage.

According to the absorbent commodity, above-mentioned skin lateral plate is with absorbent core integratedly along above-mentioned broken curve warpage.Therefore, In the case where attempting the maintenance without prejudice to the folded state of absorbent core, the skin lateral plate can be not destroy the shape of the core Mode compensate the rigidity of the core.Then, as a result, so-called corrugation of absorbent core etc. can effectively be prevented no Profit deformation.

In above-mentioned absorbent commodity,

Preferably, the skin lateral plate is the non-woven fabrics for including thermoplastic resin fibre,

The absorbent core includes the thermoplastic resin fibre and cellulose-based absorption as the liquidabsorbing fibres Property fiber, and

The thermoplastic resin fibre of the skin lateral plate engages with the thermoplastic resin fibre of the absorbent core.

According to the absorbent commodity, above-mentioned skin lateral plate includes thermoplastic resin fibre.Absorbent core also includes thermoplasticity Resin fibre.These thermoplastic resin fibres are engaged with each other.Here, these thermoplastic resin fibres are the similar materials of performance. Therefore, these thermoplastic resin fibres can be bonded together by force by compression etc..Thus, the piece is joined to by force this Core.Then, as a result, the piece can be effectively further to compensate absorbent core in a manner of not destroying the shape of absorbent core Rigidity.

In above-mentioned absorbent commodity,

Preferably, when measuring anti-warpage by Gurley methods specified in JIS L1085 and spending,

When by make it is corresponding with the broken curve part to the non-skin side on the thickness direction it is prominent in a manner of warpage Anti- warpage degree during the absorber is than when so that corresponding with the broken curve partly to the skin side on the thickness direction Anti- big more than the 0.50mN of warpage degree described in prominent mode warpage during absorber.

According to the absorbent commodity, anti-warpage degree ratio when opposite side warpage of from the absorber to skin side when absorber with Anti- big more than the 0.50mN of warpage degree during prominent to skin side mode warpage.Therefore, it is possible to easily maintain absorber with The shape of the precipitous warpage of the mode prominent to skin side along broken curve.Thus, it is possible to easily make ledge with being located at such as Labia at where the discharge port of introitus etc. is contacted or entered between labia.

In above-mentioned absorbent commodity,

Preferably, stretching is performed than location arrangements of the absorbent core by skin side on the thickness direction Handle and show the piece of the retractility on the width or the piece formed with the seam along the length direction.

According to the absorbent commodity, the piece for being arranged in the skin side of absorbent core has excellent elongation in the direction of the width Property.It is, in the case of the former piece, retractility can display in stretch processing, to realize excellent extensibility. In the case of the latter's piece, the excellent stretch on width is imparted based on seam.Therefore, this prevent the piece to hinder absorbability Core warpage in a manner of prominent along broken curve to skin side.This can maintain the dimensionally stable of absorbent commodity to skin The warpage shape that skin side protrudes.

In above-mentioned absorbent commodity,

Preferably, the absorber leans on the position of skin side with being arranged on the thickness direction than the absorber Positive dough sheet be combined into one by multiple compression units, the compression unit passes through from the thickness direction of the positive dough sheet Skin side compression and formed, and

At the part where the broken curve in the absorbent core of the absorber, exist described in being formed without The part of compression unit.

According to the absorbent commodity, this can suppress flexural rigidity at the part where the broken curve of absorbent core because upper State compression unit and improve.Then, this makes the shape of absorbent core become along the broken curve warpage shape prominent to skin side not It may be suppressed greatly.As a result, it stably ensure that the warpage shape.

In addition, improve the performance that the drained liquid for being excreted to positive dough sheet is introduced to absorber.Thus, positive dough sheet can be real Existing excellent discharge opeing performance (liquid draining performance).

In above-mentioned absorbent commodity,

Preferably, at the part where the broken curve in the absorbent core of the absorber, do not formed There is the compression unit.

According to the absorbent commodity, this can positively prevent that the bending at the part where the broken curve of absorbent core is firm Property improves because of above-mentioned compression unit.

In above-mentioned absorbent commodity,

Preferably, the broken curve extends along the whole length on the length direction of the absorbent core.

According to the absorbent commodity, because above-mentioned broken curve prolongs along the whole length on the length direction of absorbent core Stretch, so can further be stably maintained at the shape of absorbent commodity along the broken curve flexagon prominent to skin side Shape.

In above-mentioned absorbent commodity,

Preferably, the non-skin side on the thickness direction of non-skin side layer is disposed with piece, the piece with it is described Non-skin side layer is integratedly flexed into the M word shapes, and

From the non-skin side from the thickness direction during absorbent commodity, with the layer of the non-skin side The each several part prominent to the skin side corresponding to opening position, the piece formed with along the length direction paddy shape folding Superimposing thread, with to the corresponding opening position in the prominent part in the non-skin side, the piece is formed with along the mountain of the length direction Shape fold line.

According to the absorbent commodity, sheet above is integratedly flexed into M word shapes with the non-skin side layer with M word shapes. Therefore, though ought such as by clamp thigh and it is caused from outside towards width on the power of inner side act on absorbability During article, the piece also promptly can reduce and deform in the width direction together with the layer of non-skin side.This prevent to maintaining skin Skin side layer is hindered by being produced to the state of skin side warpage in a manner of prominent.

===present embodiment===

Fig. 2 to Fig. 6 B is the explanation figure of the sanitary napkin 1 as the example of the absorbent commodity according to present embodiment.Fig. 2 It is the schematic plan view observed from the skin side on thickness direction of sanitary napkin 1, Fig. 3 is identical sanitary napkin 1 from thickness The schematic plan view that non-skin side on direction is observed.In addition, Fig. 4 be along Fig. 2 in arrow IV-IV intercept it is schematic Exploded view.In addition, Fig. 5 is the schematic plan view observed from the non-skin side on thickness direction of absorber 10.Fig. 6 A are In the schematic diagram intercepted along the arrow VI-VI in Fig. 2 of the absorber 10 of folded state, Fig. 6 B are the health in folded state The schematic diagram intercepted along the arrow VI-VI in Fig. 2 of towel 1.

As shown in Figures 2 to 4, when observing in plan view, sanitary napkin 1 is elongated flat member, and sanitary napkin 1 has There are length direction, width and thickness direction.In addition, in the sanitary napkin 1, from the lateral non-skin of skin on thickness direction Side is sequentially laminated with the positive dough sheet 20 of liquid permeability, the absorber 10 of fluid-absorbing and liquid-impermeable back sheet 30.These structures Part 20,10 and 30 is joined to component adjacent in a thickness direction using the bonding agent HMA of hot-melt adhesive etc..As The example for the pattern that above bonding agent HMA is applied to, can provide Ω patterns, spiral pattern, band pattern etc., this is to later The other bonding agent HMA illustrated are also suitable.In addition, in the following description, alongst, also by the abdomen with wearer 201 Direction corresponding to side is referred to as " front side ", and direction corresponding with the dorsal part of wearer 201 also is referred to as into " rear side ".

As shown in Fig. 2 make the planar dimension of positive dough sheet 20 and back sheet 30 more than the planar dimension of absorber 10.Therefore, Periphery edge 20e, 30e (see the shaping part a little in Fig. 2) of two pieces 20,30 from absorber 10 along its length to Stretch out outside and in the width direction.These periphery edge 20e, 30e are bonded together by bonding or welding so that are absorbed Body 10 is maintained between two pieces 20,30.

In this example, the flat shape of two pieces 20,30 is configured to mutually the same.Two pieces 20,30 length sides Upward approximate central part is shaped as both sides and stretched out in the width direction, and these parts 20w, 30w be shaped as to Outer to extend, as so-called alar part 1w, 1w, alar part 1w, 1w are used to arrange sanitary napkin 1 and be fixed to underwear (not shown).Change Yan Zhi, as shown in Figure 3 and Figure 4, overleaf in piece 30, each several part 30w non-skin side corresponding with alar part 1w formed with In by sanitary napkin 1 be fixed to underwear have appropriate bonding agent, adhesive portion 40w for example in the form of a substantially rectangular.In addition, for identical Purpose, the non-skin side surface part 30c of back sheet 30 between alar part 1w, 1w formed with appropriate bonding agent, for example in The adhesive portion 40c of the multiple bandings alongst extended.However, the pattern that these adhesive portions 40w, 40c are arranged to is not It is limited to above pattern.

As the example of the material for positive dough sheet 20, the appropriate non-woven fabrics of Breathable nonwoven etc. can be provided, Here, in this example using Breathable nonwoven.However, material not limited to this.In other words, any other piece can be used, As long as it is soft liquid-permeable sheet.In addition, the example of the material as back sheet 30, can provide such as polyethylene Etc. (PE) appropriate resin film, here, in this example using PE films.However, material not limited to this.It is, it can make With any other piece, as long as it is soft liquid-impermeable.

In addition, as shown in Fig. 2 multiple compression unit E, E ... are formed at the skin side of positive dough sheet 20 from skin side, thus make Positive dough sheet 20 is integratedly bonded together in a thickness direction with absorber 10 by compression.In this example, these are used as Compression unit E, form two kinds of compression units EL, ED.A kind of compression unit E is wire compression unit EL.Along the outer peripheral edge of absorber 10 Be continuously formed multiple these wire compression unit EL, EL..., thus form it is overall extend along its length it is substantially a ring-shaped. And another compression unit E is point-like compression unit ED.These point-like compression units ED, ED ... are dispersedly formed in the region substantially closed In AEL, region AEL is separated out by above-mentioned multiple wire compression unit EL, EL ... in positive dough sheet 20.In this example, respectively Point-like compression unit ED flat shape is the circle that diameter is 1mm, and these compression units ED, ED ... is with configuration pattern cloth staggeredly Put, however, not limited to this.In addition, it not necessarily must be provided with these point-like compression unit ED and wire compression unit EL.

As shown in figure 5, absorber 10 includes：Absorbent core 11, it is formed by liquidabsorbing fibres etc., as preboarding The example of shape, when observing in plan view, absorbent core 11 is in the elongated shape extended along its length；Skin lateral plate 12, It has the same plane shape of core 11 with more than, for covering the skin side of the core 11；And non-skin lateral plate 13, it has the same plane shape of core 11 with more than, for covering the non-skin side of the core 11.As shown in figure 4, Piece 12 and 13 is integrally bonded to absorbent core 11 using the bonding agent HMA of hot-melt adhesive etc., thus prevent piece 12 and 13 adversely deform, so-called corrugation and flexure of absorbent core 11 etc..

Absorbent core 11 includes cellulose-based absorbency fiber and thermoplastic resin fibre focuses on such as 100 as such as base (g/m²) to 400 (g/m²) in the range of liquidabsorbing fibres, and these fibers are in admixture.In this example, As the example of cellulose-based absorbency fiber, using pulp fibers, as the example of thermoplastic resin fibre, using with institute The fibre length of sheath-cored structure of meaning is 30mm composite fibre, and its mesotheca is made up of polyethylene, and core is by poly terephthalic acid second Diol ester (PET) is made, however, not limited to this.For example, as cellulose-based absorbency fiber, nylon fiber can be used, is made For the fiber of thermoplastic resin fibre, polypropylene (PP) can be used alone or PE is used alone.In addition, it must not necessarily use The thermoplastic resin fibre of the latter.

In this example, in addition to liquidabsorbing fibres, the core 11 of the above also includes being used as liquid absorbent particulates The superabsorbent polymer (so-called SAP) of the example of thing, the base of the SAP focus on such as 5 (g/m²) to 50 (g/m²) scope It is interior, however, the SAP can also be omitted.

In addition, in this example, as skin lateral plate 12, such as 10 (g/m are focused on using base²) to 70 (g/m²) scope Interior Breathable nonwoven, however, not limited to this, as long as the piece is soft liquid-permeable sheet.It is, it can use other The non-woven fabrics of type, or tissue paper etc. can be used, additionally it is possible to omit the skin lateral plate 12.As non-skin lateral plate 13, focus on such as 10 (g/m using base²) to 50 (g/m²) in the range of spun-bonded/melt-blown/spunbond (SMS) non-woven fabrics, however, not It is limited to this, as long as the piece is soft.It is, other types of non-woven fabrics can be used, or thin cotton can be used Paper etc., additionally it is possible to omit the non-skin lateral plate 13.

As shown in figure 5, be also formed with the absorber 10 by from non-skin side compression and the point-like compression unit that is formed ED10.In other words, because the absorber 10 in the example includes skin lateral plate 12, absorbent core 11 and non-skin lateral plate 13, institute This three to be compressed together by through-thickness to form above-mentioned compression unit ED10.Thus, rigidity is improved, as a result can Enough prevent the disadvantageous deformation of corrugation etc..In this example, compression unit ED10 flat shape is the circle that diameter is 1.2mm Shape, these compression units ED10, ED10 ... is arranged with configuration pattern staggeredly, however, not limited to this.For these compression units ED10 and The maximum gauge for the absorber 10 that compression unit EL, ED are formed is in the range of such as 0.5mm to 5mm, however, not limited to this.

Meanwhile as shown in Fig. 5 and Fig. 6 A, in absorber 10, middle position in the direction of the width is sentenced along whole The linearly extended mode of length direction length is formed with broken curve LB, and thus as shown in Figure 6A, absorber 10 is by with along the folding Curve LB is prominent to the skin side on thickness direction and the mode of warpage guides.Along with the guiding, as shown in Figure 6B, sanitary napkin 1 is also guided by prominent to skin side by the middle position on width in a manner of warpage.When wearer 201 is towards crotch 201K pulls up to be arranged and when being fixed with the underpants (not shown) of sanitary napkin 1 at crotch part, in order that sanitary napkin 1 is against crotch It is bonded, as shown in figure 1, making the above-mentioned part prominent to skin side and the discharge port 201He positioned at introitus etc. 201K Labia at place is contacted or entered between labia.Thereby, it is possible to realize the excellent stickiness of sanitary napkin 1.

However, as initially explained, it is above-mentioned pull up the process of underpants during, or worn in sanitary napkin 1 When, middle position on width shape prominent to skin side may change so that be changed in shape When sanitary napkin 1 be difficult to contact or be difficult to labia to enter between labia, as a result, fitting can be deteriorated.

Therefore, present embodiment has the design structure for causing the shape prominent to skin side and warpage to be stabilized maintenance Think.These designs explained below.

Fig. 7 A are the schematic diagrames for the section that absorbent core 11 is cut off along width, in addition, Fig. 7 A are to show this The enlarged diagram of part corresponding with broken curve LB at section.The electron microscope that Fig. 7 B are the part B in Fig. 7 A shines Piece.In Fig. 7 A schematic diagram and Fig. 7 B electron micrograph, in order to be readily seen these designs, with usual state phase Than folded state is for example by making the size on width slightly narrow and slightly precipitous.

First, absorbent core 11 is made as described above in a manner of prominent to the skin side on thickness direction along in length Linearly extended broken curve LB warpages on direction.Here, in the inside of the core 11, the position where broken curve LB in the direction of the width Place is put, formed with low-density part 11DL, the distribution density (g/cm of low-density part 11DL liquidabsorbing fibres³) (with It is referred to as fibre density (g/cm down³)) it is less than the distribution density of peripheral part.The core 11 includes：Skin side layer 11s, its relative to Low-density part 11DL is located at skin side and with the fibre density higher than low-density part 11DL；And non-skin side layer 11ns, it is located at non-skin side and with the fibre density higher than low-density part 11DL relative to low-density part 11DL.

Then, at skin side layer 11s, part 11sLB corresponding with broken curve LB is made with the side prominent to skin side Formula warpage.Therefore, warpage shape based on skin side layer 11s, can form the fold prominent to skin side at sanitary napkin 1 (Fig. 6 B).Even if when pulling up underpants, this also can easily maintain the shape prominent to skin side of sanitary napkin 1.

In skin side layer 11s non-skin side, low-density part 11DL is located.Therefore, hypothetically, even in sanitary napkin 1 when being worn, when such as by clamp thigh and it is caused from outside towards width on the power of inner side act on this and defend During raw towel 1, also while above-mentioned prominent to skin side warpage shape is maintained skin side layer 11s can be made promptly to enter one Walk notable warpage.It is, when skin side layer 11s further notable warpages, as shown in Figure 7 A, the position at skin side layer 11s Part 11sp in inner circumferential side can be quickly removed to low-density part 11DL.This avoids following situation：When making skin side Layer 11s further notable warpage when, the above-mentioned part 11sp positioned at inner circumferential side can be shifted, so as to show big resistance.Therefore, The dimensionally stable of sanitary napkin 1 can be maintained along warpage shape prominent to skin side broken curve LB.

Meanwhile as shown in Figure 7 B, compared with low-density part 11DL peripheral part, at the 11DL of low-density part, to the greatest extent The amount of pipe liquidabsorbing fibres is less, but still has liquidabsorbing fibres.Therefore, it is possible to will be by skin side layer 11s The drained liquid of absorption promptly guides non-skin side layer 11ns into.Then, this can make absorbed drained liquid along thickness side To promptly spreading.As a result, sanitary napkin 1 can realize excellent absorbability.

From positively realizing action effect this aspect for stably maintaining above-mentioned warpage shape, it is preferred that skin Sizes of the skin side layer 11s on the thickness direction of opening position corresponding with broken curve 11LB in the range of 0.3mm to 3mm, and And preferably, the full-size in full-size and width on low-density part 11DL thickness direction exists respectively In the range of 0.3mm to 3.5mm and 0.5mm to 5mm.

Fibre density (the g/cm that can be easily performed at the 11DL of low-density part³) it is less than the fiber of its periphery office Density (g/cm³) this confirmation, for example, by cutting off absorbent core 11 along width as in Fig. 7 A, then with ink Dyed Deng the section to absorbent core 11 so that liquidabsorbing fibres are visual.That is, if this is made by above-mentioned dyeing course Gap between fiber and fiber is easily observed that as in Fig. 7 B, then easily can go out low-density part by visual confirmation Fibre density at 11DL is less than the fibre density of its periphery office.

Hypothetically, when the visual confirmation difficulty, can be performed as follows.First, for example, being assumed to by counting to be located at Liquidabsorbing fibres in low-density part 11DL region A11DL (hereinafter referred to as low-density part assumes region A11DL) Quantity, try to achieve the summation of the length of the liquidabsorbing fibres.Similarly, for example, being located at above-mentioned low-density portion by counting Divide the quantity of the liquidabsorbing fibres for the periphery office for assuming region A11DL, try to achieve the length of the liquidabsorbing fibres Summation.Then, each summation for each length for making to try to achieve is multiplied by the proportion of liquidabsorbing fibres and the sectional area of the fiber, In the hope of each product value.Then, the volume of each product value divided by above-mentioned each corresponding region is made, in the hope of each business except value.In this way, energy Enough try to achieve the fibre density (g/cm in low-density part hypothesis region A11DL³) and its peripheral part in fibre density (g/ cm³).Then, as a result, being able to confirm that the low-density part assumes whether region A11DL is actually low-density part 11DL.

Meanwhile if in fig. 7 observe, in this example, non-skin side layer 11ns is flexed into M word shapes. It is exactly, at the layer 11ns of the non-skin side, each several part 11nsp, 11nsp of the both sides on the width positioned at broken curve LB To skin side it is prominent when so that the part 11nspm between these each several parts 11nsp, nsp is prominent to non-skin side, so as to Non-skin side layer 11ns is flexed.Therefore, when sanitary napkin 1 is worn, when such as by clamp thigh and it is caused from When the power of outside towards the inner side on width acts on the sanitary napkin 1, can also above-mentioned M word shapes be being maintained, it is same with this When, above-mentioned non-skin side layer 11ns is promptly reduced and is deformed in the width direction.Therefore, this positively prevents non-skin side Layer 11ns is to skin side layer 11s to produce obstruction to the state of skin side warpage in a manner of prominent.As a result, skin side layer 11s energy It is enough stably to maintain above-mentioned warpage shape.However, not limited to this.It is, non-skin side layer 11ns must not necessarily be flexed into M Word shape.

In this example, when compare between skin side layer 11s and non-skin side layer 11ns in the direction of the width with warpage Corresponding to line LB during size on the thickness direction of opening position, skin side layer 11s size L11s is more than non-skin side layer 11ns Size L11ns.Then, it is big based on the size L11s on the thickness direction, the absorption appearance of drained liquid at skin side layer 11s Amount is big.Therefore, skin side layer 11s can utilize its big absorptive capacity immediately and promptly absorb from introitus etc. The drained liquid of the menses of discharge port 201He excretions etc., so that the drained liquid is to non-skin side layer 11ns's etc. Peripheral part spreads.Then, as a result, the sanitary napkin 1 can realize high absorbability immediately, and then the row of effectively prevent Drainage body leaks from the sanitary napkin 1.However, not limited to this.It is, for the size on thickness direction, non-skin side layer 11ns size L11ns can be more than skin side layer 11s size L11s.

In addition, in this example, the utilization of skin lateral plate 12 of the skin side fixed to absorbent core 11 in Fig. 4 is above-mentioned Bonding agent HMA etc. is integrated with absorbent core 11.Thus, skin lateral plate 12 is with the core 11 integratedly along broken curve LB warpages. Therefore, in the case where attempting the maintenance without prejudice to the folded state of absorbent core 11, the piece 12 can be not destroy the core 11 The mode of shape compensate the rigidity of the core 11.Then, as a result, such as corrugation of absorbent core 11 can be prevented effectively Deng disadvantageous deformation.However, not limited to this.It is, skin lateral plate 12 not necessarily must be integrated with absorbent core 11.

The skin lateral plate 12 is Breathable nonwoven as described above, thus including forming the thermoplastic resin of fiber as it Fiber.Meanwhile absorbent core 11 also includes thermoplastic resin fibre.Then, because these thermoplastic resin fibres are with class Like the material of performance, thus they by compression unit EL, ED and ED10 as described above etc. compression and heat-sealed with one another.Mirror In this, these thermoplastic resin fibres are engaged by force, as a result, are joined to absorbent core 11 to skin lateral plate the last 12.Therefore, should Skin lateral plate 12 can effectively realize the rigid rigid compensation effect for compensating above-mentioned absorbent core 11.However, not limited to this. It is, skin lateral plate 12 must not necessarily include thermoplastic resin fibre.Absorbent core 11 also must not necessarily include thermoplastic Property resin fibre.

In addition, in this example, as shown in figure 4, non-skin lateral plate 13 and back sheet 30 are arranged in the non-of absorbent core 11 Skin side.These pieces 13,30 are integratedly adhesively fixed to the non-skin side layer 11ns (figures of the core 11 using above-mentioned bonding agent HMA 7A).Thus, these pieces 13,30 are also integratedly flexed into M word shapes with non-skin side layer 11ns.Therefore, when such as passing through clamping Thigh and it is caused from outside towards width on the power of inner side when acting on sanitary napkin 1, these pieces 13,30 also can be with Non-skin side layer 11ns promptly reduces and deformed in the width direction together.This prevent to skin side layer 11s with to skin side The folded state of prominent mode warpage produces obstruction.However, not limited to this.It is, non-skin lateral plate 13 and back sheet 30 Not necessarily must be integrated with the non-skin side layer 11ns of absorbent core 11.

If the sanitary napkin 1 from non-skin side, the M word shapes of the back sheet 30 can be easily verified that.It is, Reference picture 7A, overleaf piece 30 each several part 11nsp, 11nsp pair prominent to skin side with above-mentioned non-skin side layer 11ns The position answered, as shown in figure 3, being alongst respectively formed with each paddy shape fold line Lv, Lv.Meanwhile overleaf piece 30 opening position corresponding with the part 11nspm prominent to non-skin side, alongst formed with chevron fold line Lm. Therefore, these paddy shape fold line Lv, Lv and chevron fold line Lm are observed, can easily verify that back sheet 30 is flexed into M fonts Shape.

Reference picture 2, as described above, in this example, from skin side by positive dough sheet 20 and absorber 10 be compressed together with Point-like compression unit ED, the ED ... for making them integrated are formed configuration pattern staggeredly.Here it is preferred that as in Fig. 2 In the example, at the part located where the broken curve LB in absorbent core 11, no compression unit ED, ED ... formation.

When in the state, can prevent the flexural rigidity of part at where above-mentioned broken curve LB because compression unit ED, ED ... and improve.Therefore, the shape of absorbent core 11 will not be hindered to become along flexagon prominent to skin side broken curve LB Shape.As a result, it is ensured that the stability of the warpage shape.

However, not limited to this.As long as it is, in the part do not located where the broken curve LB in absorbent core 11 at least A part forms compression unit ED, it becomes possible to which correspondingly enjoying above-mentioned obstruction prevents effect.Therefore, it is only necessary to, absorbing Property core 11 broken curve LB where at part in, the part for not forming compression unit ED be present.

This aspect is prevented from above-mentioned obstruction, it is preferred that is located at relative to absorbent core 11 on thickness direction The piece (for example, being in the example of fig. 4 skin lateral plate 12 or positive dough sheet 20) of skin side has high elongation in the direction of the width Property.When in the state, these pieces 12,20 will not hinder absorbent core 11 with along side prominent to skin side broken curve LB Formula warpage.This maintains the warpage shape prominent to skin side in which can make the dimensionally stable of sanitary napkin 1.As in width The upper piece with high drawing, can be included such as bottom sheet：Perform such as so-called gear stretch processing (gear Stretching process) etc. stretch processing and show the piece of the retractility on width, shape in the longitudinal direction The piece of Cheng Youyi seam, in the direction of the width piece side by side formed with multiple seams etc..(show as the former piece in stretch processing Go out the piece of retractility) exemplary materials, can provide the approximation including polyester-based elastomer etc. show elasticity bullet The piece of property body, and the approximation of polyolefin-based resins etc. show stiff thermoplastic resin etc..

When the warpage in a manner of prominent to skin side of absorbent core 11, it will not substantially make non-skin lateral plate 13 along width Direction extends.In consideration of it, as non-skin lateral plate 13, extensibility can be used to be less than the piece of skin lateral plate 12.For example, show at this In example, as skin lateral plate 12, using Breathable nonwoven, as non-skin lateral plate 13, SMS non-woven fabrics is used.However, its reason It is that compared with SMS non-woven fabrics, the extensibility on the width of Breathable nonwoven is high.Then, same form of thinking can expand Open up positive dough sheet 10 and back sheet 30.It is, in short, the extensibility of non-skin lateral plate 13 or back sheet 30 can be less than skin The extensibility of skin lateral plate 12 or positive dough sheet 10.Here, extensibility refer to " by with along predetermined direction extend natural length 5% Mode when drawing will not it is disrumpent feelings in the case of the property that extends ".Preferably, when by a manner of extension 5% as described above Load during drawing under 25mm width is below 10N/25mm.

For example, broken curve LB formation is able to ensure that as follows, based on broken curve LB formation, as above-mentioned design In it is following it is most important design implemented：In the design for being internally formed low-density part 11DL of absorbent core 11, and The skin side layer 11s of the core 11 is formed as to the design of the warpage shape prominent to skin side.

First, by absorber in a manner of the skin side for making the absorber 10 formed with compression unit ED10 is located at outer circumferential side 10 doublings in the width direction, make part relative to each other overlapping in a thickness direction.This is in the absorber 10 of doubled state Through upper and lower a pair of backer rolls, to be pressurizeed using these backer roll through-thickness to the absorber 10 of the doubled state. After the pressurization, when opening the absorber 10 in doubled state in the width direction so that absorber 10 to be deployed, in width Central position on direction alongst forms fold line LB.Absorbent core 11 positioned at skin side layer 11s with At part between the layer 11ns of non-skin side, layering etc. can be produced.Thus, low-density part 11DL is formd at the part, The shape prominent to skin side is left at skin side layer 11s.Then, this will form at absorber 10 and supply above-mentioned two structure Think the broken curve LB implemented.

In the manufacturing process of absorber 10, substantially, absorber 10 is in non-individual body shape continuous in the longitudinal direction State so that above-mentioned pressurized treatments also are performed to the absorber 10 in non-individual body.Therefore, it is possible to be consecutively carried out at the pressurization Reason, enabling absorber 10 is manufactured with high productivity.

Here, from positively perform these design one of " low-density part 11DL formation " this aspect, Preferably, the average value of the fibre density of absorbent core 11 is 0.092 (g/cm³) more than.Here, obtained from performed experiment Obtain 0.092 (g/cm³) more than this number range.The experiment will be explained below.

First, the absorbent core 11 of test film will be used as using the preparation that formed shown in Fig. 8 table 1.It is, prepare as follows Absorbent core 11：In the absorbent core 11,200 (g/m are mixed with²) pulp fibers, 30 (g/m²) there is sheath-cored structure The composite fibre and 20 (g/m of (PE (sheath)/PET (core))²) SAP.Also with two grades, 200 (g/m²) and 400 (g/m²) Prepare absorbent core 11 only made of pulp fibers.It is for example, multiple by discretely being formed at above-mentioned each absorbent core 11 Compression unit is so that the thickness of absorbent core 11 to be adjusted to each value in table 1, to make fibre density (g/cm³) become with multiple grades Change.Then, will so obtain the equal doubling of each test film, it is overlapping after, test film is changed over and opens 90 ° of state, And then the presence or absence of low-density part 11DL of visual determination absorbent core 11.

When test film includes pulp fibers and composite fibre, by the respective base weight for making pulp fibers and composite fibre (g/cm²) summation divided by test film thickness (mm), to perform fibre density (g/cm³) calculating.Meanwhile when test film only During including pulp fibers, by the base weight (g/cm for making pulp fibers²) divided by test film thickness (mm), to perform fibre density (g/cm³) calculating.

The table 1 is shown and fibre density (g/cm³) the presence or absence of corresponding low-density part 11DL visual determination.This Represent, as long as fibre density is 0.092 (g/cm³) more than, it becomes possible to form low-density part 11DL.Therefore, from certain landform Set out into the low-density part 11DL this aspect, it is preferred that the fibre density of absorbent core 11 is 0.092 (g/cm³) with On.

The average value of the fibre density of the core 11 is preferably 0.6 (g/cm³) below, more preferably 0.5 (g/cm³) below.When During in the state, it can effectively prevent the average value of the fibre density when the core 11 from changing over more than 0.6 (g/cm³) when can The problem of occurring, it is, can effectively prevent the stickiness of sanitary napkin 1 because the core 11 excessively being hardened and deteriorating ask Topic.

When the absorber 10 is easily maintained into the shape of precipitous warpage at broken curve LB, based on the precipitous warpage Shape, can easily make the part prominent to skin side and where the discharge port 201HE of introitus etc. at the moon Lipped joint touches, or the shape based on the precipitous warpage enters between labia.Thus, this is preferable.

Therefore, The inventors have studied for easily maintaining in a manner of prominent along broken curve LB to skin side The condition of the shape of precipitous warpage.It will be described below.

First, result is illustrated in advance.In order to easily maintain by the shape of skin side precipitous warpage in a manner of prominent, when When measuring the flexural rigidity of absorber 10 using anti-warpage degree by Gurley methods specified in JIS L1085, it is advantageous to when To make part corresponding with broken curve LB that absorber 10 are folded into anti-folding when paddy shape folds in a manner of prominent to non-skin side Curvature than when by make it is corresponding with broken curve LB part to skin side it is prominents in a manner of by absorber 10 be folded into chevron folding when Anti- big more than the 0.50mN of warpage degree.Here, this number range of above-mentioned more than 0.50mN is obtained from performed experiment.Below The experiment will be explained.

First, under multiple basis weight grades shown in the table 2 such as Fig. 9, simulation generation absorber made of pulp fibers 10 multiple samples.Then, multiple point-like compression units are formed in decentralized manner to each sample, the thickness of all samples is maintained at 1.3mm to 1.75mm scope, so that mutual thickness is roughly the same value.By making the sample under respective basis weight grades Central position warpage in the direction of the width, broken curve LB is alongst formed in these opening positions.From having been formed There is the rectangular test piece for cutting out and generating that 38mm is long, 25mm is wide in broken curve LB sample.

Figure 10 A show the schematic plan view of test film, and Figure 10 B show the arrow intercepted along the line B-B in Figure 10 A Head figure.If see from Figure 10 A and Figure 10 B, when cutting out test film, make the side as the above-mentioned length with 38mm To longitudinal direction alignd with the width of sample, while make the transverse direction and sample as the direction of the above-mentioned length with 25mm Length direction aligns.Here, the width of sample is consistent with the width of sanitary napkin 1, length direction and the health of sample The length direction of towel 1 is consistent.

So that upper end 11mms of the above-mentioned broken curve LB on the longitudinal direction away from test film opening position is along located lateral Mode cuts out the test film.In addition, for the purpose for avoiding test film from distorting, at the rising wood on the longitudinal direction of test film Skin side and non-skin side are attached with the splicing tape for the acrylic acid that thickness is 48 μm.Also, for preventing splicing tape shadow The purpose of the measurement accuracy of anti-warpage degree is rung, the splicing tape is attached to the above-mentioned part of test film as follows：To prevent The mode stretched out below the chuck of Gurley formula softness testers described later on.

Using be able to carry out according to the illustrated Gurley formulas softness testers of JIS L1085 Gurley methods (by Pacify Tian Jingji Co. Ltd. systems) chevron of test film is folded for execution and the measurement of the respective anti-warpage degree of paddy shape folding.Survey Amount order is carried out according to JIS L1085.During measurement, by the longitudinal direction that the length in the vertical of test film is 6.3mm Rising wood is fixed to the chuck of the moveable arm of testing machine, while makes the bottom that the length in the vertical of test film is 6.3mm Contacted with the upper end of the pendulum of testing machine.Then, moveable arm is moved in a manner of making test film through-thickness warpage, with base Anti- folding is obtained in the reading for representing the mark of the position of pendulum when upper end of the bottom of test film away from pendulum is moved Curvature.The measurement of five anti-warpage degree is performed for each basis weight grades, and the average value of five measurements is set as each grade Anti- warpage degree.

Evaluation is performed as follows, and the evaluation is about whether can be in an easy manner by the sample of each basis weight grades Maintain by the evaluation to skin side chevron collapsed shape of precipitous warpage in a manner of prominent.

First, cut out from each sample of each basis weight grades formed with above-mentioned broken curve LB and have on above-mentioned width There are 65mm, 5 or 10 rectangular test pieces with 30mm on above-mentioned length direction, be used to evaluate maintenance flexagon with generation The test film of the stability of shape.It should be noted that when execution cuts out test film, above-mentioned broken curve LB position is set to be in upper State the middle position of 65mm length.

As shown in Figure 11 A, each test film warpage at above-mentioned broken curve LB is made, thus test film turns into chevron folding shape Shape, the chevron collapsed shape be by skin side, project upwards in a manner of warpage shape.Now, by chevron collapsed shape A pair of inclined-planes between 40mm is adjusted to the distance at inclined-plane lower end at this.Then, by the lower end on above-mentioned a pair of inclined-planes it Between distance maintain above-mentioned 40mm, and each lower end is each attached on foregoing flat table.

Thus, as shown in Figure 11 B, can be rounded in the test film of chevron collapsed shape because of its deadweight.By 10 judges The degree that visual confirmation is rounded, with judge the chevron collapsed shape of the test film for each basis weight grades be it is precipitous, And make final judgement by most ballots in these judged results.

Fig. 9 table 2 shows experimental result.It illustrates：As long as paddy shape folds anti-warpage degree and subtracts the anti-folding of chevron folding The value of curvature is more than 0.50mN, it becomes possible to folds chevron and easily maintains precipitous warpage shape.Therefore, this channel syndrome Understand：In order to which absorber 10 is easily maintained into the precipitous warpage shape, it is only necessary to make when absorber 10 is with to non-skin side Anti- warpage degree of prominent mode when paddy shape folds is than when absorber 10 is folded in a manner of prominent to skin side in chevron Anti- big more than the 0.50mN of warpage degree.

===other embodiment===

More than, embodiments of the present invention are had been described that, however, aforementioned embodiments are intended to readily appreciate the present invention, It is not intended to limit the present invention.It need not repeat, in the case of without departing from the scope of the present invention, variant of the invention and improvement are possible , and its equivalent is also included in the present invention.For example, following modification is possible.

In the foregoing embodiment, sanitary napkin 1 is the example as absorbent commodity, however, not limited to this.For example, inhale The property received article can be protection pad.

In the foregoing embodiment, the sanitary napkin 1 as the example of absorbent commodity includes a pair of alar parts 1w, 1w, however, Not limited to this.In other words, without including alar part 1w.

In the foregoing embodiment, broken curve LB forms the middle position on the width of absorbent core 11, however, Not limited to this.In other words, broken curve LB can be formed at the position being slightly misaligned from middle position along width.However, Absorbent core 11 and sanitary napkin 1 are designed substantially on the symmetrical shape in middle position on width so that warpage It is preferable that line LB, which is formed in middle position,.

In the foregoing embodiment, absorbent core 11 as two pieces of skin lateral plate 12 and non-skin lateral plate 13 by covering Lid, however, not limited to this.For example, the skin side and non-skin side of absorbent core 11 can be by single coverings.

In the foregoing embodiment, the whole length landform on length directions of the above-mentioned broken curve LB along absorber 10 Into however, not limited to this.In other words, when absorber 10 be directed into by broken curve LB to skin side warpage and it is prominent when, Broken curve LB can be formed at the part on the length direction of absorber 10.For example, broken curve LB can be only arranged at suction The discharge port opposed area relative with the discharge port 201He of introitus etc. in acceptor 10.

Description of reference numerals

1 sanitary napkin (absorbent commodity)

1w alar parts

10 absorbers

11 absorbent cores

11DL low-density part

11s skin side layers

11sLB parts corresponding with broken curve

11sp is located at the part of inner circumferential side

11ns non-skin side layer

11nsp parts

11nspm parts

12 skin lateral plates

13 non-skin lateral plates

20 positive dough sheets

20e peripheries edge

20w parts

30 back sheets

30c parts

30w parts

40c adhesive portions

40w adhesive portions

201 wearers

201K crotches

201He discharge ports

LB broken curves

AEL regions

A11DL low-density part assumes region

E compression units

EL wire compression units

ED point-like compression units

ED10 compression units

LKs cutting lines

Lkns cutting lines

HMA bonding agents

Lv paddy shape fold lines

Lm chevron fold lines

Claims

1. a kind of absorbent commodity, it has orthogonal length direction, width and thickness direction, the absorbability thing Product include：

Absorber, it includes the absorbent core with liquidabsorbing fibres,

The absorber is provided with the broken curve along the length direction, for guiding the absorber to the thickness direction On skin side highlightedly warpage,

The absorbent core includes low-density part, skin side layer and non-skin side layer, and the low-density part is in the width The opening position positioned at the broken curve and the distribution density for the liquidabsorbing fibres are less than the liquid of peripheral part on direction The part of the distribution density of body absorbency fiber, the skin side layer are located at the thickness direction relative to the low-density part On skin side, non-skin side layer is located at the non-skin side on the thickness direction relative to the low-density part,

The low-density part there are the liquidabsorbing fibres,

The skin side layer has a part corresponding with the broken curve, and the part is with to the skin pleurapophysis on the thickness direction The mode warpage gone out.

2. absorbent commodity according to claim 1, it is characterised in that

Non-skin side layer is flexed into M word shapes, wherein being located at each of the broken curve both sides in the layer of the non-skin side Part is prominent to the skin side on the thickness direction, and part between each several part is to non-on the thickness direction Skin side protrudes.

3. absorbent commodity according to claim 1 or 2, it is characterised in that

The average value of the fibre density of the liquidabsorbing fibres of the absorbent core is 0.092g/cm³More than.

4. absorbent commodity according to any one of claim 1 to 3, it is characterised in that

When the thickness direction of skin side layer opening position corresponding with the broken curve on the width On size and non-skin side layer the thickness of opening position corresponding with the broken curve on the width During size on direction, the size of the skin side layer is more than the size of non-skin side layer.

5. absorbent commodity according to any one of claim 1 to 4, it is characterised in that

The absorber includes the skin lateral plate for being fixed on the skin side of the absorbent core, and

6. absorbent commodity according to claim 5, it is characterised in that

The skin lateral plate is the non-woven fabrics for including thermoplastic resin fibre,

The absorbent core includes fine as the thermoplastic resin fibre of the liquidabsorbing fibres and cellulose-based absorbability Dimension, and

7. absorbent commodity according to any one of claim 1 to 6, it is characterised in that

When measuring anti-warpage by Gurley methods specified in JIS L1085 and spending,

When by make part corresponding with the broken curve to the non-skin side on the thickness direction it is prominent in a manner of described in warpage Anti- warpage degree during absorber is than when so that part corresponding with the broken curve is prominent to the skin side on the thickness direction Mode warpage described in absorber when anti-big more than the 0.50mN of warpage degree.

8. absorbent commodity according to any one of claim 1 to 7, it is characterised in that

Stretch processing is performed than the absorbent core by the location arrangements of skin side and show on the thickness direction The piece of retractility on the width or the piece formed with the seam along the length direction.

9. absorbent commodity according to any one of claim 1 to 8, it is characterised in that

The absorber passes through with being arranged on the thickness direction than positive dough sheet of the absorber by the position of skin side Multiple compression units are combined into one, the compression unit by from the skin side compression on the thickness direction of the positive dough sheet and Formed, and

At the part where the broken curve in the absorbent core of the absorber, exist and be formed without the compression The part in portion.

10. absorbent commodity according to claim 9, it is characterised in that

At the part where the broken curve in the absorbent core of the absorber, the compression unit is formed without.

11. absorbent commodity according to any one of claim 1 to 10, it is characterised in that

The broken curve extends along the whole length on the length direction of the absorbent core.

12. absorbent commodity according to claim 2, it is characterised in that

Non-skin side on the thickness direction of non-skin side layer is disposed with piece, the piece and non-skin side layer one Ground is flexed into the M word shapes, and

From the non-skin side from the thickness direction during absorbent commodity, with the layer of the non-skin side to Opening position corresponding to each several part that the skin side protrudes, the piece is formed with the paddy shape folding along the length direction Line, with to the corresponding opening position in the prominent part in the non-skin side, the piece is formed with the chevron along the length direction Fold line.