CN106794085A

CN106794085A - Absorbent commodity

Info

Publication number: CN106794085A
Application number: CN201580055603.4A
Authority: CN
Inventors: 山口达之; 长岛启介; 松井学; 塚本祐贵
Original assignee: Kao Corp
Current assignee: Kao Corp
Priority date: 2014-10-30
Filing date: 2015-10-20
Publication date: 2017-05-31
Anticipated expiration: 2035-10-20
Also published as: WO2016067965A1; JP2016086872A; CN106794085B; TWI691313B; TW201628573A; JP6181027B2

Abstract

A kind of absorbent commodity, it has absorber (4) between the non-skin lateral plate material (3) for forming skin lateral plate material (2a, 2b) of skin opposite face and forming non-skin opposite face, absorbent core (40) of the above-mentioned absorber (4) comprising the elongate shape more long of the fore-and-aft direction along absorbent commodity, absorbent core (40) has in excretory portion counterpart：Side region (45), it is located at width both sides；And middle section (41), it is located at compared with the side region (45) are by width center side and thickness is more than side region (45)；Side region (45) is integrally formed with middle section (41), middle section (41) is protruded towards non-skin lateral plate material side, and region of the absorber (4) when overlooking where side region (45) has the non-set out region not engaged with non-skin lateral plate material (3).

Description

Absorbent commodity

Technical field

The present invention relates to absorbabilities such as a kind of sanitary napkin, panty liner (vaginal fluid protection pad), incontinence protections Article.

Background technology

At present, it is commonly known that the absorbent commodities such as sanitary napkin absorber with along the recessed of the skin of wearer The mode of convex form sets protrusion, in addition it is also known that forming groove in the protrusion.For example have disclosed in patent document 1,2 There is the absorber of the slotted protrusion of tool near the central portion of absorber.

Prior art literature

Patent document

Patent document 1：Japanese Unexamined Patent Publication 2009-112590 publications

Patent document 2：Japanese Unexamined Patent Publication 2012-125366 publications

The content of the invention

The present invention relates to a kind of absorbent commodity, it is forming the skin lateral plate material of skin opposite face and is forming non-skin phase There is absorber, above-mentioned absorber is included to be indulged along the fore-and-aft direction of absorbent commodity is more long between the non-skin lateral plate material on opposite The absorbent core of shape long.Above-mentioned absorbent core has in excretory portion counterpart：Side region, it is located at width both sides； And middle section, it is located at compared with the side region is by width center side and its thickness is more than the side region.Above-mentioned side Square region is integrally formed with above-mentioned middle section, and above-mentioned middle section is protruded towards above-mentioned non-skin lateral plate material side.Above-mentioned absorber Region when overlooking where above-mentioned side region has the non-set out region not engaged with above-mentioned non-skin lateral plate material.

Brief description of the drawings

Fig. 1 is the stereogram of the sanitary napkin for being denoted as first embodiment of the invention.

Fig. 2 (a) is the IIa-IIa line sectional views of Fig. 1, and Fig. 2 (b) is the IIb-IIb line sectional views of Fig. 1.

Fig. 3 is the top view of the absorber for observing the sanitary napkin shown in Fig. 1 with respect to surface side from non-skin.

Fig. 4 is, to the pressurization of the both sides of central thick wall area, and to form density higher than central projection and grammes per square metre is higher than side The explanatory diagram of of the method in the jut adjoining high density portion in square region.

Fig. 5 is the schematic diagram of the deformation state of the absorber for representing the sanitary napkin of Fig. 1 under wearing effect.

Fig. 6 is the fiber accumulations device for representing the absorbent core for being preferred for manufacturing the sanitary napkin shown in Fig. 1 The schematic diagram of major part.

Fig. 7 (a) and Fig. 7 (b) are the edge cylinder weeks for representing the fiber accumulations cylinder peripheral part in the fiber accumulations device shown in Fig. 6 To section schematic diagram.

Specific embodiment

Absorber in patent document 1 has includes the laminated construction of the upper and lower, and in the formation where upper strata The middle section for having protrusion is formed through the groove of levels.However, the groove is to be processed by heat embossing and formed, So being compacted near the bottom of groove, therefore there is room for improvement in terms of for the soft tracing ability of wearer's activity.

In addition, in patent document 2, being again provided with comprising multiple convex portions in the absorber with multiple block convex portions Protrusion, protrusion easily follows the action of wearer, but applies stronger situation of pressure etc. from wearer side when wearing When conformability have room for improvement.

Therefore, problem of the invention is to provide a kind of absorbability thing of the performance that can further improve above-mentioned prior art Product.

Hereinafter, the present invention is preferred embodiment illustrated based on it while referring to the drawings.

As (the hereinafter also referred to as health of sanitary napkin 1 of the first embodiment of absorbent commodity of the invention Towel 1) it is the applicable overnight hygienic band of h.d., the sanitary napkin of preferably more than length 30cm.

As shown in figure 1, sanitary napkin 1 has absorbent main body 6, a pair of flank sections 7,7 of shape more long along the longitudinal direction With a pair of rear alar parts 8,8.On absorbent commodities such as sanitary napkins, so-called " fore-and-aft direction " refers to when wearing and dress The consistent direction of the fore-and-aft direction of person.In addition, in this manual, fore-and-aft direction is length direction, by orthogonal to that direction Referred to as width.

Sanitary napkin 1 has front part A, excretory portion counterpart B and rear portion C in its length direction, in excretory portion counterpart B Absorbent main body 6 the left and right sides have a pair of flank sections 7,7, in rear portion, the left and right sides of the absorbent main body 6 of C has A pair of rear alar parts 8,8.On sanitary napkin 1 (absorbent commodity) or absorbent main body 6, excretory portion counterpart B is width Central portion and wearer introitus be body fluid excretory portion relative configuration part, front part A is arranged in compared with excretory portion phase The part of the front side (veutro) of wearer is more leaned on to portion B, rear portion B is arranged in compared with excretory portion counterpart B more by wearer's The part of back side.

Sanitary napkin 1 includes：Skin lateral plate material 2, towards the skin opposite face of the skin side of wearer when its formation is worn；It is non- Skin lateral plate material 3, towards the non-skin opposite face of the garment sides such as shorts when its formation is worn；And absorber 4, it is configured at this Between two sheet materials 2,3.Additionally, in this manual, skin lateral plate material 2, non-skin lateral plate material 3 and absorbent core 40 are being bowed The part that apparent time is overlapped is referred to as absorbent main body 6.In sanitary napkin 1, skin lateral plate material 2 has the face sheet of liquid permeability 2a and a pair of sidepiece sheet materials 2b, 2b being engaged in its both sides.The face sheet 2a of liquid permeability is with throughout absorbent main body 6 The mode of total length is configured at the central portion of the width Y of absorbent main body 6.Sidepiece sheet material 2b is by the width of absorbent main body In the state of the side edge part 21 of direction center side is overlapped on face sheet 2a, width is being leaned on slightly from the side edge part 21 The engagement position in outside is in face sheet 2a.In sanitary napkin 1, the width medial end of sidepiece sheet material 2b is not along length Degree direction engages with face sheet 2a.In addition, in sanitary napkin 1, not set in the width medial end of sidepiece sheet material 2b Put elastic component.However, also can be in the elastic component of the neighbouring arranging stereoscopic protective formation of above-mentioned side edge part 21, in dress When, by the convergent force of the elastic component, make the part of Rack from the side edge part 21 in excretory portion counterpart B with from The mode that face sheet 2a leaves is erected and forms stereoscopic protective.

A pair of flank sections 7,7 and a pair of rear alar parts 8,8 include the sidepiece sheet material extended out from the both side edges of absorber 4 2b and non-skin lateral plate material 3.In a pair of respective faces comprising non-skin lateral plate material 3 of flank section 7, it is provided with shorts The flank section bonding part (not shown) that the non-skin opposite face of crotch part is fixed, sets in the non-skin opposite face of absorbent main body 6 It is equipped with the main body bonding part (not shown) of the inner surface for being used to that the main body 6 is fixed on shorts.In sanitary napkin 1, main body bonding Portion is arranged at region Chong Die with the side region of following absorbent cores 4 during vertical view.Rear alar part 8 is configured when wearing On the inner surface of shorts.It is preferred that being also equipped with being fixed on shorts in the face comprising non-skin lateral plate material 3 of rear alar part 8 The bonding part of inner surface.Skin lateral plate material 2 is more outward compared with the peripheral part of absorber 4 with extending to for non-skin lateral plate material 3 Part is bonded with each other using bonding agent, and is engaged by heat seal in the peripheral part of sanitary napkin 1.Skin lateral plate material 2 with Preferably by being coated with through patterns such as point, spiral, stripeds between absorber 4 and between absorber 4 and non-skin lateral plate material 3 Bonding agent and be bonded with each other.However, the non-flesh of absorber 4 abuts lateral region 45 institute of the face in following absorbent cores 40 of surface side Region have and be not engaged in the non-set out region of non-skin lateral plate material.

Absorber 4 in sanitary napkin 1 has the absorbent core 40 in the fore-and-aft direction of sanitary napkin elongate shape more long.Inhale The property received core 40 includes holding between the fiber assembly that is made up of fibrous materials such as paper pulp fibers or the fiber in the fiber assembly There is the material of high water absorbency polymer.In addition, absorber 4 has the cored sheet material (diagram is omitted) of cladding absorbent core 40.That is, Absorbent core 40 coats upper and lower two by the cored sheet material (diagram is omitted) comprising tissue paper and/or the non-woven fabrics of water penetration Face.Clad sheet timber-used spills or improves the conformality of absorbent core 40 in the formation material for preventing absorbent core 40.Absorbent core 40, preferably by a piece of cored sheet material, substantially coat the section of the width of absorbent core 40, or by multi-disc Cored sheet material, substantially coats the section of the width of absorbent core 40.It is also preferred that will for example be configured at absorbent core The both sides inflection of a piece of cored sheet material of the rectangle of 40 skin opposite face or non-skin opposite face is another to absorbent core 40 One surface side, and be stacked on the both sides of another cored sheet material of the rectangle for coating its another side.The sheet material of the part of the lamination Between can not engage, but preferred bonding.

As shown in figure 1, the absorbent core 40 in sanitary napkin 1 has more long with the fore-and-aft direction equidirectional of sanitary napkin 1 Elongate shape.In addition, as shown in Fig. 2 (a) and Fig. 2 (b), absorbent core 40 has positioned at the side of both sides in width Y Region 45,45；Middle section 41 with centrally located side and thickness more than side region 45,45.Body fluid row in sanitary napkin 1 Let out in portion opposed area B, middle section 41 is that have compared with the side region 45,45 respective lower surface S2, S2 more to non-skin The region of the central projection 5 that the lower section in the side of lateral plate material 3, i.e. Fig. 2 protrudes.

In absorbent core 40, side region 45,45 and middle section 41 are integrally formed.

In this manual, so-called " integrally formed " refers to will be not different from joint methods such as utilization bonding agent or compressions It is bonded to each other with the component produced in operation, but is integrally formed using identical material and in an operation.Therefore, exist Middle section 41 does not exist the product when 2 separately manufactured absorbent cores are arranged side-by-side with the interface in side region 45,45 The mutual adjacency section of raw core body or joint portion.In addition, in the sanitary napkin 1 of present embodiment, it is one that absorbent core 40 is overall Body shaping, so in the part 42d of the formation central projection 5 of middle section 41 and compared with part 42d closer to skin side Part 42u between, equally do not exist the mutual adjacency section of layer or joint portion.

The manufacture method of the absorbent core on this kind of structure is described hereinafter.

The width W1 (reference picture 2 (a)) of central projection 5 is preferred relative to the ratio of the whole width W2 of absorbent core 40 It is more than 20%, more preferably more than 30%, additionally, it is preferred that be less than 80%, more preferably less than 70%, additionally, it is preferred that being More than 20% and less than 80%, more preferably more than 30% and less than 70%.Additionally, in the width of central projection 5 In the case that length is unfixed shape, for example, working as oval or oblong shape under such circumstances, central projection 5 Width W1 refer to width length part most long length, contrast the width, the overall with W2 of absorbent core 40 is set to The whole width of the same position on the length direction of absorbent core 40.

As shown in figure 1, the central projection 5 of the absorbent core 40 in sanitary napkin 1 has in the length side of absorbent core 40 To shape more long, and formed throughout a part of rear portion C from the excretory portion counterpart B of sanitary napkin 1.More specifically, It is formed in the scope nearby near the X-direction central portion of rear portion C from the leading section of excretory portion counterpart B.

Central projection 5 preferably in the fore-and-aft direction X of sanitary napkin 1 (absorbent commodity), from excretory portion counterpart B throughout rear A part of square portion C and formed.In addition, central projection 5 preferably over the total length of the fore-and-aft direction X of sanitary napkin 1 30% with On length and formed, more preferably throughout sanitary napkin 1 total length more than 40% length and formed, more preferably throughout health The length of more than the 50% of the total length of towel 1 and formed.It is also identical on following pods 50 and high density portion 12.

In the non-skin opposite face of the middle section 41 of absorbent core 40, as shown in Fig. 2 (a) and Fig. 3, it is formed with along suction The length direction X of the property received core 40 and there is the pod 50 of bottom with respect to surface side in skin.That is, pod 50 is in the non-of absorbent core 40 Skin has opening portion 50a with respect to surface side, and is the groove of not insertion absorbent core 40.In sanitary napkin 1, pod 50 is by subtracting Lack the grammes per square metre of the absorbent material of absorbent core 40 and formed.That is, the pod 50 of sanitary napkin 1 will not by embossing processing etc. A part for absorbent core 40 is compressed and is formed.Additionally, in sanitary napkin 1, the pod 50 of central projection 5 is arranged at for 1, The bar number for being arranged at the pod of central projection 5 is not limited to this, also can be at intervals provided with width Y many Bar.In sanitary napkin 1, pod 50 is configured in the way of the length direction along central projection 5 passes through central projection 5.

In addition, in the middle section 41 of absorbent core 40, translot 44a is identically formed with pod 50, translot 44a is Formed by reducing the grammes per square metre of the formation material of absorbent core 40, and there is bottom with respect to surface side in skin.That is, translot 44a is also same with pod 50, has opening portion and is not insertion absorbent core 40 in the non-skin surface side relatively of middle section 41 Groove.Translot 44a extends along the width Y of absorbent core 40.

In the sanitary napkin 1 shown in Fig. 1, in middle section 41, a plurality of translot is provided with intervals in length direction X 44a.In sanitary napkin 1, translot 44a is set in the way of the width Y along central projection 5 crosses central projection 5.

In the middle section 41 of absorbent core 40, such as shown in Fig. 2 (a), the bottom of grammes per square metre portion 42 high and formation pod 50 Low grammes per square metre portion 43 alternately forms in the width Y of absorbent core 40, low grammes per square metre portion 43 along absorbent core 40 length direction X Extend.Grammes per square metre portion 42 high is the part of a relatively high compared with low grammes per square metre portion 43 of grammes per square metre of the formation material of absorbent core, low gram Weight portion 43 is the part relatively low compared with grammes per square metre portion 42 high of grammes per square metre of the formation material of absorbent core.

In the middle section 41 of absorbent core 40, the grammes per square metre in low grammes per square metre portion 43 of the bottom of pod 50 is formed relative to Gao Ke The ratio of the grammes per square metre in weight portion 42 is preferably more than 5%, more preferably more than 10%, additionally, it is preferred that be less than 80%, more preferably Less than 70%, additionally, it is preferred that being more than 5% and less than 80%, more preferably more than 10% and less than 70%.In addition, grammes per square metre high The grammes per square metre in portion 42 is preferably 200g/m²More than, more preferably 300g/m²More than, additionally, it is preferred that being 800g/m²Hereinafter, more preferably It is 700g/m²Hereinafter, additionally, it is preferred that being 200g/m²Above and 800g/m²Hereinafter, more preferably 300g/m²Above and 700g/m² Below.The grammes per square metre in low grammes per square metre portion 43 is preferably 10g/m²More than, more preferably 15g/m²More than, additionally, it is preferred that being 400g/m²With Under, more preferably 350g/m²Hereinafter, additionally, it is preferred that being 10g/m²Above and 400g/m²Hereinafter, more preferably 25g/m²Above and 350g/m²Below.

In the middle section 41 of absorbent core 40, not only grammes per square metre is more than and forms low gram of bottom of pod 50 in grammes per square metre portion 42 high Weight portion 43, thickness is also greater than the low grammes per square metre portion 43.The thickness in low grammes per square metre portion 43 is excellent relative to the ratio of the thickness in grammes per square metre portion 42 high Elect more than 5%, more preferably more than 10% as, additionally, it is preferred that be less than 50%, more preferably less than 40%, additionally, it is preferred that being More than 5% and less than 50%, more preferably more than 10% and less than 40%.In addition, the thickness in grammes per square metre portion 42 high is preferably 1.5mm More than, more preferably more than 2mm, additionally, it is preferred that be below 10mm, more preferably below 8mm, additionally, it is preferred that being more than 1.5mm And below 10mm, more preferably more than 2mm and below 8mm.The thickness in low grammes per square metre portion 43 is preferably more than 0.08mm, more preferably More than 0.15mm, additionally, it is preferred that be below 5mm, more preferably below 4mm, additionally, it is preferred that be more than 0.08mm and below 5mm, More preferably more than 0.15mm and below 4mm.

Additionally, in the case where absorbent core is constituted comprising translot 44a the sanitary napkin 1 such as present embodiment, on State grammes per square metre portion 42 high value and with the relation in low grammes per square metre portion 43 in each value equivalent to the grammes per square metre portion high not comprising translot 44a Situation.

(assay method of the grammes per square metre in grammes per square metre portion high and low grammes per square metre portion)

The single-blade razor manufactured using FEATHER companies is by absorbent core 40 along grammes per square metre portion 42 high and low grammes per square metre portion 43 Boundary line cuts off, and obtains the small pieces in grammes per square metre portion 42 high and low grammes per square metre portion 43.In the way of as predetermined area, by grammes per square metre portion high 42 part clipped with low grammes per square metre portion 43 by side region 45 is cut into small by the part that low a pair grammes per square metre portions 43,43 clip Piece.In the case where the small pieces are included and form the low grammes per square metre portion 48 of the bottom of the translot 44a that Y extends in the width direction, will be high Cut with by grammes per square metre portion 42 high the part that grammes per square metre portion 42 surrounds with the boundary line in side region 45, low grammes per square metre portion 43 or low grammes per square metre portion 48 Mode into small pieces is used to determine.The small pieces in low grammes per square metre portion 43 are the narrow parts that will be sandwiched between a pair high grammes per square metre portions 42,42 Cut in the way of length turns into 30mm.Do not obtaining not comprising the small pieces with the length 30mm of the cross section in low grammes per square metre portion 48 In the case of small pieces as low grammes per square metre portion 43, cut comprising as far as possible on a small quantity with the length of the cross section in low grammes per square metre portion 48 The small pieces of 30mm, the small pieces as low grammes per square metre portion 43.

Use electronic balance (the electronic balance GR-300 that A＆D companies manufacture, precision：4 after decimal point) to determine these small The weight of piece.By calculated weight calculated divided by the area of grammes per square metre portion 42 high or the small pieces in low grammes per square metre portion 43 small pieces gram Weight.On grammes per square metre portion 42 high and low grammes per square metre portion 43, the average grammes per square metre of 5 small pieces is set to grammes per square metre respectively.

(assay method of the thickness in grammes per square metre portion high and low grammes per square metre portion)

The measure of the thickness in grammes per square metre portion 42 high and low grammes per square metre portion 43 is by determining for being cut to each Site Determination grammes per square metre Under small pieces thickness and carry out.By size 20mm × 20mm, thickness 3mm acrylic panel with its center and the center of small pieces Consistent mode is placed, non-contacting Laser Displacement meter (the laser head LK-G30, displacement meter LK- manufactured using KEYENCE companies GD500), the thickness of determination sample.

Additionally, pressure is set to 0.5g/cm during thickness measurement².It is smaller in the size of the small pieces for cutting, it is difficult to by noncontact In the case that formula laser displacement gauge is measured, it is possible to use such as microscope VHX-1000 of manufacture (KEYENCE companies) with 20~100 times of multiplying power observes the section of above-mentioned cut-off sample, is measured.

In the middle section 41 of absorbent core 40, the low phase of grammes per square metre portion 43 of grammes per square metre portion 42 high and the bottom for forming pod 50 Than the density of absorption component is high.It is this composition be for example by manufacture absorbent core 40 operation in absorbent core 40 Middle section 41 pressurizes and obtains.Now, the pressure of pressurization concentrates on the thicker grammes per square metre portion 42 high of thickness, thinner thickness it is low Grammes per square metre portion 43 is not under pressure because of pressurization, so as to be uncompressed.So, grammes per square metre portion 42 only high is compressed, thus, to absorb The density of component designs grammes per square metre portion 42 high relative to the mode that low grammes per square metre portion 43 increases.In addition, in absorbent core 40 Centre region 41, grammes per square metre portion 42 high replaces with the low grammes per square metre portion 48 of the bottom for forming translot 44a along the length direction X of absorbent core 40 Ground is formed.Compared with the low grammes per square metre portion 48 of bottom of translot 44a is formed, the density of absorption component is also uprised in grammes per square metre portion 42 high.Its In, density is calculated by using grammes per square metre and the thickness obtained based on said determination method.

The grammes per square metre in low grammes per square metre portion 48, thickness are that identical method cuts small pieces and determines when utilizing with low grammes per square metre portion 43.It is low The small pieces in grammes per square metre portion 48 are that the narrow part that will be sandwiched between a pair high grammes per square metre portions 42,42 is cut in the way of length turns into 30mm Under.Do not obtain not comprising with the small pieces of the length 30mm of the cross section in low grammes per square metre portion 43 in the case of, cut comprising to the greatest extent may be used Can on a small quantity with the small pieces of the length 30mm of the cross section in low grammes per square metre portion 43, the small pieces as low grammes per square metre portion 48.Grammes per square metre portion 42 high Above-mentioned preferred grammes per square metre ratio, thickness with low grammes per square metre portion 43 than etc. it is also identical between grammes per square metre portion 42 high and low grammes per square metre portion 48.

And, formed in the above described manner with low grammes per square metre portion 43 by the grammes per square metre portion 42 high with grammes per square metre difference and density contrast, Non- skin opposite face in the middle section 5 of absorbent core 40, the pod 50 towards skin with respect to surface side depression is respectively along absorption Property core 40 length direction X extend and formed.

In this manual, skin opposite face be absorbent commodity or its member of formation when wearing towards the flesh of wearer The face of skin side, non-skin opposite face be absorbent commodity or its member of formation when wearing towards opposite with the skin side of wearer The face of side.

In addition, in the side region 45 of absorbent core 40, also as shown in Fig. 2 (a), grammes per square metre portion 46 high exists with low grammes per square metre portion 47 The width Y of absorbent core 40 is alternately formed, and each low grammes per square metre portion 47 extends along the length direction X of absorbent core 40. Compared with low grammes per square metre portion 47, the grammes per square metre of the formation material of absorbent core is of a relatively high, low grammes per square metre portion 47 and Gao Ke in grammes per square metre portion 46 high Weight portion 46 compares, and the grammes per square metre of the formation material of absorbent core is relatively low.

And, formed in the above described manner by grammes per square metre portion 46 high and low grammes per square metre portion 47 with grammes per square metre difference and density contrast, The non-skin opposite face in the side region 45 of absorbent core 40, also divides towards skin with respect to a plurality of side pod 52 of surface side depression Do not extend along the length direction X of absorbent core 40 and formed.

In the side region 45 of absorbent core 40, grammes per square metre portion 46 high with formed pod 52 bottom the low phase of grammes per square metre portion 47 Than the density of absorption component is high.This kind of composition can be obtained as follows.The side region 45 of absorbent core 40 with to center It is pressurized in the different operation of operation that region 41 is pressurizeed.The pressure of pressurization concentrates on the thicker grammes per square metre portion 46 high of thickness, The low grammes per square metre portion 47 of thinner thickness is not under pressure because of pressurization, so as to be uncompressed.In this way, grammes per square metre portion 46 only high is pressed Contracting, thus, grammes per square metre portion 46 high is designed in the way of the density of absorption component relative to low grammes per square metre portion 47 increases.Additionally, Pressurization operation used in the operation is to try to carry out as follows：Used that to be excavated be equivalent to middle section 41 Shape backer roll or only there is the measure of the roller of pressurization part etc. in the part in the side region 45 corresponding to absorbent core 40, Pressurize in side region only to absorbent core 40.

In the side region 45 of absorbent core 40, the grammes per square metre for forming the low grammes per square metre portion 47 of the bottom of side pod 52 is relative More than 5%, more preferably more than 10% is preferably in the ratio of the grammes per square metre in grammes per square metre portion 46 high, additionally, it is preferred that be less than 50%, more Preferably less than 40%, additionally, it is preferred that being more than 5% and less than 50%, more preferably more than 10% and less than 40%.In addition, The grammes per square metre in grammes per square metre portion 46 high is preferably 50g/m²More than, more preferably 100g/m²More than, additionally, it is preferred that being 400g/m²Hereinafter, more Preferably 300g/m²Hereinafter, additionally, it is preferred that being 50g/m²Above and 400g/m²Hereinafter, more preferably 100g/m²Above and 300g/m²Below.The grammes per square metre in low grammes per square metre portion 47 is preferably 2.5g/m²More than, more preferably 5g/m²More than, additionally, it is preferred that being 200g/m²Hereinafter, more preferably 150g/m²Hereinafter, additionally, it is preferred that being 2.5g/m²Above and 200g/m²Hereinafter, more preferably 5g/m²Above and 150g/m²Below.

In the side region 45 of absorbent core 40, not only grammes per square metre is more than the bottom for forming side pod 52 in grammes per square metre portion 46 high Low grammes per square metre portion 47, and thickness is also greater than the low grammes per square metre portion 47.Thickness of the thickness in low grammes per square metre portion 47 relative to grammes per square metre portion 46 high The ratio of degree is preferably more than 5%, more preferably more than 10%, additionally, it is preferred that be less than 50%, more preferably less than 40%, Additionally, it is preferred that being more than 5% and less than 50%, more preferably more than 10% and less than 40%.In addition, the thickness in grammes per square metre portion 46 high Preferably more than 0.8mm, more preferably more than 1mm, additionally, it is preferred that be below 5mm, more preferably below 4mm, additionally, it is preferred that It is more than 0.8mm and below 5mm, more preferably more than 1mm and below 4mm.The thickness in low grammes per square metre portion 47 be preferably 0.04mm with On, more preferably more than 0.08mm, additionally, it is preferred that be below 0.4mm, more preferably below 0.32mm, additionally, it is preferred that being More than 0.04mm and below 0.4mm, more preferably more than 0.08mm and below 0.32mm.

Additionally, in the case where absorbent core is constituted comprising translot 44b the sanitary napkin 1 such as present embodiment, on State grammes per square metre portion 46 high value and with the relation in low grammes per square metre portion 47 in each value equivalent to the grammes per square metre portion high not comprising translot 44b Situation.

Additionally, the assay method of grammes per square metre portion 46 high and the respective grammes per square metre in low grammes per square metre portion 47 and thickness and above-mentioned grammes per square metre portion 42 high Similarly carried out with the assay method in low grammes per square metre portion 43.

In addition, the grammes per square metre portion high in the grammes per square metre portion 42 high and side region 45 in the middle section 41 at the place of central projection 5 46 compare, and grammes per square metre becomes big, in addition, compared with the grammes per square metre portion 46 high in side region 45, thickness also becomes big.Thus, middle section 41 Thickness t1 be thicker than the thickness t2 in side region 45, in middle section 41, be formed with the lower surface projected to compared with side region 45 S2 central projections 5 more on the lower.

The thickness t1 of middle section 41 is preferably more than 110% relative to the ratio of the thickness t2 in side region 45, more excellent Elect more than 120% as, additionally, it is preferred that be less than 400%, more preferably less than 300%, additionally, it is preferred that for more than 110% and Less than 400%, more preferably more than 120% and less than 300%.Additionally, in the present embodiment, the thickness t1 of middle section 41 It is the above-mentioned thickness in the grammes per square metre portion 42 high of the width central portion in centrally located region 41, the thickness t2 in side region 45 is for most Near the above-mentioned thickness in the grammes per square metre portion 46 high of middle section 41.In side region 45, the feelings in jut adjoining high density portion 12 are set Under condition, the thickness in the grammes per square metre portion 46 high near jut adjoining high density portion 12 is set to.

On central projection 5, in each of excretory portion counterpart B and rear portion C, from the following table in side region 45 The height t that face S2 is protruded is preferably more than 20% relative to the ratio of the whole thickness t1 of middle section 41, more preferably More than 30%, additionally, it is preferred that be less than 90%, more preferably less than 80%, additionally, it is preferred that be more than 20% and less than 90%, More preferably more than 30% and less than 80%.The projecting height t of central projection 5 subtracts with the whole thickness t1 from middle section 41 It is worth obtained by the thickness t2 for going to side region 45 identical.

In sanitary napkin 1, in side region 45, grammes per square metre portion 46 high is with low grammes per square metre portion 49 also in the length side of absorbent core 40 Alternately formed to X, each low grammes per square metre portion 49 extends also along the width Y of absorbent core 40.Thus, in side region 45, a plurality of translot 44b is configured at intervals in length direction X.The low grammes per square metre portion 48 of middle section 41 is low with side region 45 Grammes per square metre portion 49 middle section 41 Yu side region 45 interface, in the position consistency of the length direction X of absorbent core 40, together Sample ground, the translot 44a of middle section 41 and the translot 44b in side region 45,45 in above-mentioned interface, in the length of absorbent core 40 Spend the position consistency of direction X.

That is, the translot 44b in the translot 44a of middle section 41 and side region 45,45 is overlooked from the relative surface side of non-skin During absorbent core 40, the middle section 41 from absorbent core 40 is formed throughout side region 45,45 continuous 1 translot 44, should Translot 44 extends throughout the whole width of absorbent core 40.And, the translot 44 is between the length direction of absorbent core 40 separates Every and be formed with a plurality of.In other words, the low grammes per square metre portion 43 of middle section 41 and the low grammes per square metre portion 47 in side region 45 formed throughout The low grammes per square metre portion that the whole width of absorbent core 40 continuously extends, this formation material of the absorbent core in low grammes per square metre portion The grammes per square metre of material, thickness and density are small compared with the grammes per square metre portion 46 high in side region 45.

On translot 44, so-called refers to continuously to be inhaled with respect to surface side vertical view in from non-skin throughout side region from middle section Receive property core 40 when, translot between middle section and side region without interrupt, from middle section throughout side region continuously In the presence of.In the sanitary napkin 1 of present embodiment, translot 44 intersects when overlooking with pod 50 in crosswise, but across pod And exist in the extension in the space in the translot of relative side space in another translot it is all or part of in the case of, Regard as in the cross part with pod, translot is not interrupted.

Below region 45'(where the side region 45 of the absorbent core 40 when overlooking of absorber 4 in sanitary napkin 1 The referred to as side region 45' of absorber) there is the non-set out region not engaged with non-skin lateral plate material 3.On the other hand, absorber The middle section 41' of the 4 region 41'(hereinafter also referred to absorbers when overlooking where the central projection 5 of absorbent core 40) Engaged with non-skin lateral plate material 3.Therefore, as shown in Fig. 2 (a), in the side region 45' of absorber 4, absorbent core 40 with it is non- Space is formed between skin lateral plate material 3.In the case where absorbent core 40 is coated by cored sheet material, the space can both be formed at Between absorbent core and cored sheet material, can also be formed between cored sheet material and non-skin lateral plate material 3, preferably cored sheet material with Space is formed between non-skin lateral plate material 3.In the case, both can be bonded between absorbent core 40 and cored sheet material, also may be used It is not bonded.The non-skin of absorbent core 40 with respect to surface side face also can throughout whole region using through pattern be coated with bonding agent with Cored sheet material is bonded.In addition, the face of the skin abutment face side of absorbent core 40 can also utilize throughout whole region being coated with through pattern Bonding agent it is Nian Jie with cored sheet material.

In sanitary napkin 1, the side of on the outside of the width in the region where centrally located protuberance 5, absorber 4 , there is non-set out region in the width whole region of square region 45', in Fig. 2 (a), side region 45' and non-set out region Overlap.However, be not limited to this, a part of the region 45' during vertical view of absorber 4 where side region 45 also can with it is non- Skin lateral plate material 3 is engaged.The only position of the widthwise edges of absorbent core 40 can be for example enumerated to be engaged with non-skin lateral plate material Form etc..In addition, or following form：Only making the whole region of the side region 45' for being located at excretory portion counterpart B turns into Non-set out region, has what the side region 45' of absorber 4 and non-skin lateral plate material 3 were engaged in front part A and/or rear portion C Part.In addition, can be following form：In the case where central projection 5 is the uneven shapes of its width such as oblong shape, Positioned at the Breadth Maximum part compared with central projection 5 more by longitudinally forward or rear, side region on the inside of width 45', the side region 45' of absorber 4 are engaged with non-skin lateral plate material 3, compared with from before Breadth Maximum part along its length X The more outward region of the imaginary line that extends afterwards is formed with non-set out region.It is however preferred at least body fluid excretory portion is with respect to area The whole region of the region 45' where side region 45 in the B of domain is formed with the disengaged area for not being engaged in non-skin lateral plate material 3 Domain.

In absorbent commodity of the invention, the middle section 41 of absorbent core 40 is integrally formed with side region 45, and And the central projection 5 of the relatively thick middle section 41 of thickness is prominent to non-3 sides of skin lateral plate material.And, in relatively The side region 45' of the absorber 4 that centre protuberance 5 is more leaned on the outside of width, with the absorber 4 and non-skin facesheet 3 Between unassembled non-set out region.Therefore, the effect of uniqueness as described below can be obtained.

First, when wearer wears absorbent commodity of the invention, around the excretory portion counterpart of absorbent commodity Portion will be deformed in the way of the shape for following body respectively.Now, in being protruded away from the direction of the skin of wearer by court There is the region or space of compensator or trimmer pressure with respect to surface side in its non-skin in centre protuberance 5, the periphery.Therefore, the side of absorber 4 Portion region 45', 45' has buffer area and bends between middle section 41' in crotch, so it is excellent to form resiliency Different deformed shape (reference picture 5).

In the sanitary napkin 1 shown in Fig. 2 (a), the region of compensator or trimmer pressure be formed in the side region 45' of absorber 4 with Space between non-skin lateral plate material 3.Especially, when sanitary napkin 1 is worn, from skin with respect to surface side towards the relative surface side of non-skin In the case of applying power, although side region 45' is bent towards non-skin opposite face direction, move, but side region 45' The region abutted with central projection 5 easily maintains the space between side region 45' and non-skin lateral plate material 3.Additionally, at this In the sanitary napkin 1 of implementation method, and then, it is formed with pod and horizontal stroke in middle section 41 and the side region 45 of absorbent core 40 Groove, can further relax the pressure applied from product width.

In addition, buffer area can to maintain the space between central projection 5 and lateral region 45' in the way of formed, So being formed with gas-permeable channels in region that is big with absorptive capacity and keeping the middle section 41 of a large amount of discharged liquids close, can subtract Few vexed wet sense.

And then, the central projection 5 protruded towards the side of skin lateral plate material 3 is played as the effect of cushion pad, even if in excretion After liquid absorbability article absorbs, such as from skin with respect to surface side towards the stronger pressure of non-skin relative direction from dress The body fluid excretory portion of person applies to absorbent commodity, it is also possible to mildly bear pressure, in addition, can be by above-mentioned buffer area And ensure the space of the extension of central projection 5, so the wearing feeling of softness can be brought to wearer, and excretion can be suppressed Liquid spills from middle absorbent portion 5.

These effects can be brought to the introitus of sensitivity and its nearby soft in the case where absorbent commodity is sanitary napkin The sense of touch of sum, so it may be said that particularly preferably.In addition, there is the absorption of the fixed mechanism to underpants etc. in non-skin lateral plate material 3 In the case of property article, due to the non-set out region that there is side region 45 and non-skin lateral plate material 3, so absorbent core 40 is not It is vulnerable to the influence of the twisted or fold of underpants etc. etc., so the advantage of the effect above is big.The advantage of the effect is will be above-mentioned solid It is particularly useful in the case of determining the non-skin abutment face of side region opposite segments that mechanism is arranged at non-skin lateral plate material.

In addition, in the absorbent core 40 of the sanitary napkin 1 of present embodiment, with jut adjoining high density portion 12, should Being abutted with middle section 41 in jut adjoining high density portion 12 and side region 45,45 and density is higher than middle section 41. Grammes per square metre portion 42 high without pod and translot in regard to middle section 41 with jut adjoining high density portion 12 comparatively, on The density of whole constituent materials such as fiber, absorbable polymer of absorbent core is formed, refers to highly dense compared to jut adjoining Degree portion 12, the density of grammes per square metre portion 42 high is relatively low.

In sanitary napkin 1, and then, will compared with jut adjoining high density portion 12 grammes per square metre is relatively low and density relatively Low side region 45 is configured at compared with jut adjoining high density portion 12 more by width outside.

In the case where jut adjoining high density portion 12 is formed by the method shown in Fig. 4, non-skin is with respect to surface side Density of the density higher than skin with respect to surface side, but the density in jut adjoining high density portion 12 is by the thickness direction of absorbent core Entirety cut what is be measured.

The density in jut adjoining high density portion 12 relative to middle section 41 in the grammes per square metre portion high without pod and translot 42 density is more than 110%, preferably more than 120%, additionally, it is preferred that be less than 400%, more preferably less than 300%, separately Outward, preferably more than 110% and less than 400%, more preferably more than 120% and less than 300%.

In addition, the density in jut adjoining high density portion 12 is more than 150% relative to the density in side region 45, preferably Be more than 160%, additionally, it is preferred that be less than 500%, more preferably less than 400%, additionally, it is preferred that for more than 150% and Less than 500%, more preferably more than 160% and less than 400%.

[computational methods of the density of middle section]

In absorbent core 40, in the way of as predetermined area, the single-blade razor manufactured using FEATHER companies is cut Breaking, product width be the test film of 30mm sizes for 3mm and article length direction.First, in cutting middle section 41 The test film in the grammes per square metre portion 42 high without pod and translot, uses electronic balance (the electronic balance GR-300 that A＆D companies manufacture, essence Degree：4 after decimal point) determine its quality.Secondly, using such as microscope (KEYENCE company VHX-1000) with 20~100 times The section of sample that cuts of multiplying power observation, and determine thickness.Wherein, the test film that will be determined is set to 5, and average value is set It is the thickness of middle section.Volume (the length of thickness × product width of the quality that said determination is gone out divided by test film The length in × article length direction), and calculate the density of middle section.

[computational methods of the density in jut adjoining high density portion]

Be 3mm and article length direction it is the test film of 30mm sizes from absorbent commodity (product) by product width The article center of width continuously cut multi-disc to article end, and use the electronic balance (electronics that A＆D companies manufacture Balance GR-300, precision：4 after decimal point) determine its quality.Secondly, using such as microscope, (KEYENCE companies manufacture VHX-1000 the section of cut sample) is observed with 20~100 times of multiplying power, and determines thickness.

Additionally, each test film for being cut cuts from 5 absorbent commodities, on the test film for being determined, 5 are respectively made The same position of individual absorbent core 40, average value is set to the thickness of test film.The quality that said determination is gone out is divided by test film Volume (length in the length of thickness × product width × article length direction), calculate the test film cut from each position Density.

On each test film for being obtained, calculate successively from the test film under article center lateral incision successively in product width The density of the test film of the center side in direction and the test film cut from the position being adjacent on the outside of the width of the test film Than (the former/the latter), in the case where the density ratio is reached below 0.5, on the outside of the product width in 2 test films The density of test film abuts the density in high density portion 12 as jut.

In the sanitary napkin 1 of present embodiment, as shown in figure 4, jut adjoining high density portion 12 is in manufacture sanitary napkin When, by the width be formed as with the part 42' same thickness as grammes per square metre portion 42 high in the middle section 41 of absorbent core 40 What direction both sides 12' compressed and was formed.There is this kind of composition in middle section 41, thus, it is possible to play following effect.

Firstly, for the deformation when the pressure from wearer applies to excretory portion counterpart, jut adjoining is highly dense Degree portion 12 has deformation antagonism, so the side region 45 of absorbent core 40 is easily while in central projection 5 and lateral zones Space is maintained between domain 45 while deformation.Therefore, the effect of the invention described above is easily further played.

In addition, this composition is also favourable for absorbent properties.First, it is expelled to middle section in excretory portion counterpart B body fluid 41 central projection 5.In the sidepiece of middle section 41, there is the jut adjoining that central projection 5 is compressed and formed high Density portion 12.Therefore, the body fluid for being spread to width Y and thickness direction is directed to high density portion.Jut adjoining is highly dense Degree portion 12 be the grammes per square metre due to absorbent material higher than side region 45, so keep the ability of body fluid higher.Therefore, body fluid exists The both sides of middle section 41 are blocked, and are difficult to reach the width both sides of sanitary napkin 1.Therefore, in sanitary napkin 1, Easily suppress body fluid side leakage.

On jut adjoining high density portion 12, more specifically illustrate.

Jut adjoining high density portion 12 in sanitary napkin 1 is the fiber accumulations dress that major part is shown in using Fig. 6 After putting absorbent core 40A of the manufacture as shown in Fig. 4 (a), by the both sides of the central thick wall area 41' of absorbent core 40A Compress and formed, above-mentioned absorbent core 40A has comprising the part 12' as jut adjoining high density portion 12 and is formed as The central thick wall area 41' of heavy wall.In sanitary napkin 1, by central thick wall area 41' positioned at the part as central projection The left and right sides fixation Partial shrinkage, thus, reduce thickness, the part is prominent higher than uncompressed center as density Go out the region in portion 5, form jut adjoining high density portion 12.In addition, jut adjoining high density portion 12 and side region 45 Other parts compare, and the grammes per square metre of absorbent material is higher, so having sufficient absorptive capacity, are inhaled so as to suppress body fluid and reach The lateral margin of the property received core 40.Therefore, easily prevent body fluid from being leaked from the sidepiece of sanitary napkin 1.In the sanitary napkin 1 of present embodiment, Jut adjoining high density portion 12 turns into the thickness roughly the same with the part in the absence of pod 50 and translot 44 in side region 45 Degree, but it is not limited to this, it is also possible to the thickness in jut adjoining high density portion 12 is thin compared with central projection 5, but compared with side region Domain 45 is thick.

In addition, in sanitary napkin 1, for the pod 50 of central projection 5, compared with the 50a of opening portion, bottom 50b's Width length narrows.More specifically, as shown in Fig. 2 (a) and Fig. 2 (b), the width side of the pod 50 of central projection 5 To length become narrow gradually with being gone to bottom 50b from opening portion 50a, in width section view, pod 50 turns into from non- Substantially inverted v-shaped shape of the skin with respect to surface side towards skin with respect to surface side.In addition to this kind of form, or stepped cross-section shape Shape, but during for the substantially shape of falling V when in the width direction two outsides apply pressure, the non-skin opposite face of middle section 41 is significantly The deformation of degree ground, and skin opposite face deflection is smaller, so will not reduce the absorption area at excretory portion counterpart, can obtain Obtain soft sensation.The effect in the case where there is jut adjoining high density portion 12, particularly effectively function.

The width length La of the opening portion 50a of the pod 50 of central projection 5 is preferably more than 0.5mm, Jin Eryou Elect more than 1mm as, additionally, it is preferred that be below 5mm, and then the width length Lb of preferably below 4mm, bottom 50b is preferred It is below 1mm, and then preferably below 0.5mm.The lower limit of the width length Lb of bottom 50b is 0 (zero).

In addition, the depth of pod 50 is preferably more than 0.5mm and below 5.0mm, so preferably more than 1.0mm and Below 3.0mm.In addition, the difference (the above-mentioned above-mentioned Lb of La-) of the width length of the opening portion 50a and bottom 50b of pod 50 is excellent Elect more than 0.5mm and below 3mm, and then preferably more than 1mm and below 2mm as.

In addition, the depth of pod 50 is relative to opening portion 50a and difference (the above-mentioned La- of the width length of bottom 50b Above-mentioned Lb) ratio (depth/poor (the above-mentioned above-mentioned Lb of La-)) be preferably more than 0.5 and less than 20, and then preferably more than 1 and 10 Below.If the scope, then the shape of the pod in wearing easily is stabilized, and is easily maintained for absorbing the preferred of excreta Shape.

In addition, the bottom 50b of pod 50 compared with side region 45 lower surface S2 more on the lower.Side region mentioned herein The position of the lower surface S2 in domain 45 is the following table in the grammes per square metre portion 46 high being adjacent in the position of middle section 41 in side region 45 Face.The bottom 50b of pod 50 preferably on the length direction X of absorbent core 40 throughout the whole region of middle section 41, compared with side The lower surface S2 in square region 45 is more on the lower.By being set to this composition, sanitary napkin excessive deformation when easily suppressing to wear, and Easily bring appropriate sense next to the skin.

Additionally, each of middle section 41 and side region 45 on absorbent core 40, because exist translot and Pod, makes non-skin opposite face have concaveconvex shape, and skin opposite face is flat.

Sanitary napkin 1 according to present embodiment, in the middle section 42 with central projection 5, is formed with translot 44, on State that the depth of translot 44 is shallower, bottom 44d reaches the lower surface S2 compared with side region 45 closer to the position of non-skin side, and Side region 45 is extended to from middle section 42, and the translot 44 is the grammes per square metre of the formation material for reducing absorbent core and is formed , although so the central projection 5 with the obstruction for being typically easy to turn into bending, is rich in morphotropism, in the flesh of sanitary napkin 1 Skin opposite face is not easy to produce gauffer.Therefore, as shown in figure 5, can be while making the non-of absorber 4 and the sanitary napkin comprising it 1 Skin opposite face follows the body fluid excretory portion or gluteal fold of wearer, while making global shape to follow the body shape of wearer Mode deforms, and the concavo-convex conformability relative to body is excellent, and excellent relative to the movable morphotropism of following of wearer, It is not easy to bring the sense of discomfort caused by the bending of gauffer or absorbent core.

On this kind of effect, when the bottom 44d of translot 44 is throughout the middle section 41 of the width Y of absorbent core 40 Whole region compared with side region 45 lower surface S2 more on the lower when, further improve.

For more reliably playing the viewpoint of this kind of effect, the depth of the translot 44a (44) of middle section 41 relative to The ratio of the thickness t1 of middle section 41 is preferably more than 50%, more preferably more than 60%, additionally, it is preferred that be less than 95%, More preferably less than 90%, additionally, it is preferred that being more than 50% and less than 95%, more preferably more than 60% and less than 90%.

In addition, the width W of translot 44 is preferably more than 0.2mm, more preferably more than 0.5mm, additionally, it is preferred that for 3mm with Under, more preferably below 2mm, additionally, it is preferred that being more than 0.2mm and below 3mm, more preferably more than 0.5mm and below 2mm. As shown in figure 1, sizes of the width W of translot 44 for the length direction X of absorbent core.

In addition, in sanitary napkin 1, the density in the grammes per square metre portion 42 high of middle section 41 is higher than low grammes per square metre portion 43, so through horizontal stroke The body fluid that groove 44 absorbs promptly is absorbed into grammes per square metre portion 42 high.Therefore, body fluid along translot 44 absorbent core 40 length Direction is absorbed, so can efficiently carry out the body fluid absorption at middle section 41.As a result, improve from absorbent core 40 The suppression of liquid leakage.In addition, in side region 45, the density in grammes per square metre portion 46 high also above low grammes per square metre portion 47, so can Obtain identical effect.

Middle section 41 and side region 45 it is respective in, the density in low grammes per square metre portion is relative to adjacent grammes per square metre portion high The ratio of density is preferably more than 5%, more preferably more than 10%, additionally, it is preferred that be less than 50%, more preferably 40% with Under, additionally, it is preferred that being more than 5% and less than 50%, more preferably more than 10% and less than 40%.

In addition, in sanitary napkin 1, in the side pod 52 that side region 45 is also equipped with extending along its length.On Side pod 52, the width of the bottom 52b of the opening portion 52a surface sides relative with non-skin is located at positioned at skin with respect to surface side The same length of Y.Herein, so-called " roughly the same " refers to the opening portion and bottom that same position is in length direction The difference of width length is within 5%.By this kind of composition, what sanitary napkin 1 was subject in dress from the leg of user Compression stress is transferred uniformly into side pod 52 and equably compresses side pod 52, so user from sanitary napkin can be relaxed The reaction of 1 compression stress being subject to, can eliminate the sense of discomfort that user experiences in the dress of sanitary napkin 1.If additionally, by side The opening portion 52a of pod 52 is set to compared with the broader compositions of bottom 52b, then sanitary napkin 1 is because of the leg root in dress from user The compression stress that is subject to and opening portion more greatly deforms, so have the side edge part of sanitary napkin 1 in the way of being rolled up to user The situation of deformation.This kind of deformation is the skin side warpage because of the side edge part of sanitary napkin 1 to user, so have sanitary napkin 1 strongly It is connected to pars inguinalis or the situation at interval is produced with the surface of sanitary napkin 1 in the skin of the central portion user of sanitary napkin 1.So And, by making the width same length of opening portion 52a and bottom 52b, can reduce and produce this kind of unfavorable condition Risk.And, it helps the stability of the shape of the pod 50 of the middle section 41 in the present invention.

Side pod 52 is preferably abutted with jut adjoining high density portion 12.By this kind of composition, with side pod 52 The absorbent core 40 of side side contacts and different from the hardness of the absorbent core 40 of the central side contacts of side pod 52, according to this The difference of hardness, sanitary napkin 1 is easily with side pod 52 for standard shaft makes side edge part curved towards the direction opposite with the skin of user Song, makes the shape of sanitary napkin 1 in dress more stable, thereby, it is possible to mitigate because wearing the discomfort that sanitary napkin 1 makes user feel Sense, and the central portion of sanitary napkin 1 can be made more to be close to the skin of user, can more efficiently absorb liquid.In addition, by making The high density portion side pod 52 relatively low with comparatively density for undertaking the effect for absorbing and capturing liquid is abutted, and is played such as Lower effect：Prevent liquid from oozing out into higher density portion more by side, liquid is fixed on closer to the middle section of sanitary napkin 1 Region, prevents liquid from being leaked from the side edge part of sanitary napkin 1.

The preferably bottom surface 50a of the pod 50 of middle section 41 is relative more by non-skin compared with the bottom surface 52a of side pod 52 Surface side.By this kind of composition, first, more lean on non-skin with respect to the pod 50 of surface side as standard shaft with bottom surface, the side portion of sanitary napkin 1 Bent towards the direction opposite with the skin of user, secondly, more lean on skin with respect to the side pod 52 of surface side as standard shaft with bottom surface, The side portion of sanitary napkin 1 bends more towards the direction opposite with the skin of user such that it is able to make the shape of the sanitary napkin 1 in dress Shape is more stable.

The absorbent core 40 of above-mentioned sanitary napkin 1 can for example be manufactured by using fiber accumulations device 53 (reference picture 6) Go out after above-mentioned absorbent core 40A, implement the processing shown in Fig. 4 and manufacture, above-mentioned fiber accumulations device 53 includes：Fiber accumulations Cylinder 54, it has to gather in outer peripheral face uses recess 55, and R rotations in one direction；And conduit 59, it is by the shape of absorbent core Supplied with the state of dispersing into material to the outer peripheral face of fiber accumulations cylinder 54.In fig. 4, it is expressed as follows situation：Will with conveyance There is the central portion of direction MD orthogonal direction CD the absorbent core 40A of central thick wall area 41' to be directed into one in side face Between backer roll 61 and the smooth flat roll 63 of side face point with recess 62, strongly pair with the part for turning into middle section 41 Adjacent part 12' is pressurizeed, and forms the absorbent core 40 with jut adjoining high density portion 12.In fig. 4, represent Situation about not pressurizeed to the part as middle section 41 for forming central projection 5, but also can be to as central area Any one of the part in domain 41 and the part as side region 45 or both are than as jut adjoining high density portion 12 Part 12' carries out pressurization compression weakly.

In fiber accumulations device 53 shown in Fig. 6 gathering with recess 55 along the outer peripheral face of fiber accumulations cylinder 54 it is circumferential with Fixed intervals are formed with multiple.Gather and include mesh plate etc. with the bottom surface 56 of recess 55, with as SS function Multiple pores.

As shown in Fig. 7 (a), gathering the part with the bottom surface 56 of recess 55, be formed with to form central heavy wall area The recess 56a of domain 41'.Gathering with the bottom of recess 55, be configured with to form the difficulty in the low grammes per square metre portion such as low grammes per square metre portion 43,48 Gas permeability component 57,58.Difficult gas permeability component 57,58 is fixed in the way of being protruded from the bottom surface gathered with recess 55, can be non- Gas permeability component, such as comprising metal, plastics.

In the same manner as the known fiber accumulations device with fiber accumulations cylinder, by one side from the bottom for gathering use recess 55 Face is aspirated, while the formation material to supplying absorbent core in conduit, and as shown in Fig. 7 (b), make the formation material of absorbent core It is piled up in given shape and is gathered with recess 55.Absorbability is obtained with the demoulding of recess 55 from gathering by making deposit 4' Core 40A.Absorbent core 40A also can be by before being coated using cored sheet material or after cladding, being added by being waited between a pair of rolls Press and moderately compress.As shown in Fig. 7 (b), the part that material is formed comprising core body on difficult gas permeability component 57,58 is deposited in As low grammes per square metre portion 43 etc., the part being deposited on the bottom surface without difficult gas permeability component 57,58 turns into grammes per square metre portion 42 high etc.. In addition, as described above, being pressurizeed by the middle section 41 to absorbent core 40A, forming density in middle section 41 is higher than The grammes per square metre portion 42 high in low grammes per square metre portion 43, dividually pressurizes by with the part as middle section 41 to side region 45, And form high grammes per square metre portion 46 of the density higher than low grammes per square metre portion 47 in side region 45.In addition, also can be using cored sheet material cladding Before or after cladding, carry out forming adding for jut adjoining high density portion 12 in the central thick wall area 41' of absorbent core 40A Pressure (compression).The pressurization (compression) for forming jut adjoining high density portion 12 had both been usable in side face and had had the roller of step difference with Entreat the pressurization in region 41 is carried out simultaneously, also can simultaneously be carried out with the pressurization in side region 45.In addition, by will be formed in roller side face Step difference be designed as appropriate size, it is also possible to the pressurization of pressurization and side region 45 with middle section 41 is carried out simultaneously. And then, the pressurization of middle section 41 and the pressurization in side region 45 can be also carried out in different operations, also can be in middle section 41 Before pressurization, during the pressurization of middle section 41 and the pressurization in side region 45, after the pressurization in side region 45, in different works These pressurizations are carried out in sequence.In the case of absorbent core of the manufacture comprising water absorbent polymer, preferably set in the midway of conduit Put the introduction part of water absorbent polymer.

As face sheet 2a and non-skin lateral plate material 3, can use with no particular limitation conventional with the technical field The sheet material identical sheet material for being used.For example, as face sheet 2a, the non-woven fabrics with liquid permeability can be used or wearing Pore membrane.As non-skin lateral plate material 3, plastic liquid impermeability film or spunbond-melt blown-spunbond lamination can be used The non-woven fabrics of the water pressure resistances such as non-woven fabrics water-repellancy high.In addition, as sidepiece sheet material 2b, water pressure resistance water-repellancy high can be used Non-woven fabrics, such as spunbond-melt blown-spunbond lamination non-woven fabrics etc..

More than, the present invention is preferred embodiment illustrated based on it, but the present invention is not limited to above-mentioned implementation Mode.

For example in side region 45, also can be in the absence of any one of side translot 44b and side pod 52 or both.Separately Outward, any one of side translot 44b and side pod 52 or both can also be formed at the skin of absorbent core 40 with respect to surface side.

In addition, the row of absorbent commodity both can be only formed at throughout the continuous translot 44 in side region 45 from middle section 41 Portion's counterpart is let out, rear portion also can be only formed at.

In addition, absorbent core both only comprising fibrous materials such as paper pulp fibers can also include fibrous material and high-hydroscopicity Both polymer.As fibrous material, can with no particular limitation using all the time for sanitary napkin or health shield The various fibrous materials of the absorber of the absorbent commodities such as pad, disposable diaper, for example, can be used paper pulp fiber, artificial silk fine Chopped fiber of the synthetic fibers such as chopped fiber, the polyethylene of the cellulose fibres such as dimension, cotton fiber etc..These fibers can be used alone 1 kind is combined two or more and uses.In addition, fibrous material is preferred overall or a part is paper pulp fiber, the paper pulp in fibrous material The ratio of fiber is preferably 50~100 mass %, more preferably 80~100 mass %, and then preferably 100 mass %.Additionally, For absorbent core, in addition to high water absorbency polymer is coordinated, also can optionally coordinate deodorant, antiseptic etc..

In addition, in the above-described embodiment, making the density in grammes per square metre portion high higher than low grammes per square metre portion, but can also be absorbed by omitting The pressurization operation of property core, and make both density identical.

In addition, absorbent commodity of the invention is in addition to for sanitary napkin, or panty liner (vaginal fluid Protection pad), incontinence protection, other absorbent commodities such as disposable diaper.Explanation clipped in said one implementation method and The necessary condition that only one implementation method has can respectively be suitably applied to other embodiment, in addition, in each implementation method Necessary condition can suitably between implementation method phase double replacement.

On above-mentioned implementation method, the present invention and then following absorbent commodity is disclosed.

A kind of absorbent commodities of the ＞ of ＜ 1, it is relative with non-skin is formed in the skin lateral plate material for forming skin opposite face Absorbent commodity with absorber between the non-skin lateral plate material in face, above-mentioned absorber includes the front and back along absorbent commodity To the absorbent core of elongate shape more long, above-mentioned absorbent core has in excretory portion counterpart：Side region, it is located at width Direction both sides；And middle section, it is located at compared with the side region is by width center side and thickness is more than the side region；On State side region integrally formed with above-mentioned middle section, above-mentioned middle section is protruded towards above-mentioned non-skin lateral plate material side, above-mentioned suction In acceptor, the region when overlooking where above-mentioned side region has the disengaged area not engaged with above-mentioned non-skin lateral plate material Domain.

Absorbent commodities of the ＞ of ＜ 2 as described in the ＞ of above-mentioned ＜ 1, wherein, in above-mentioned side region and above-mentioned middle section Adjacent part, the high density portion with density higher than above-mentioned middle section.

Absorbent commodities of the ＞ of ＜ 3 as described in the ＞ of above-mentioned ＜ 1 or the ＞ of ＜ 2, wherein, in the non-skin phase of above-mentioned middle section Opposite side, is formed with the length direction along above-mentioned absorbent core and has the pod of bottom with respect to surface side in skin, above-mentioned vertical In groove, the width length of above-mentioned bottom is narrower than opening portion.

Absorbent commodities of the ＞ of ＜ 4 as described in the ＞ of above-mentioned ＜ 3, wherein, the width length of above-mentioned pod is with from opening Oral area goes and becomes narrow gradually to bottom.

Absorbent commodities of the ＞ of ＜ 5 as any one of the ＞ of 1 ＞ to ＜ of above-mentioned ＜ 4, wherein, in above-mentioned middle section shape Into the central translot that the width of oriented above-mentioned absorbent core extends.

Absorbent commodities of the ＞ of ＜ 6 as any one of the ＞ of 1 ＞ to ＜ of above-mentioned ＜ 5, wherein, in above-mentioned side region shape Into the side pod that the length direction of oriented above-mentioned absorbent core extends.

Absorbent commodities of the ＞ of ＜ 7 as described in the ＞ of above-mentioned ＜ 6, wherein, it is formed with to above-mentioned absorption in above-mentioned side region Property core width extend side translot.

Absorbent commodities of the ＞ of ＜ 8 as any one of the ＞ of 3 ＞ to ＜ of above-mentioned ＜ 7, wherein, in above-mentioned pod and translot Any one or both be to be formed by reducing the grammes per square metre of the absorbent material of above-mentioned absorbent core.

Absorbent commodities of the ＞ of ＜ 9 as any one of the ＞ of 3 ＞ to ＜ of above-mentioned ＜ 8, wherein, above-mentioned absorbent core it is upper The non-skin opposite face that is each for stating middle section and side region has concaveconvex shape, and skin opposite face is flat.

Absorbent commodities of the ＞ of ＜ 10 as any one of the ＞ of 3 ＞ to ＜ of above-mentioned ＜ 9, wherein, in above-mentioned absorbent core Middle section, with the grammes per square metre portion high higher of the grammes per square metre compared with the low grammes per square metre portion of bottom of above-mentioned pod is formed.

Absorbent commodities of the ＞ of ＜ 11 as described in the ＞ of above-mentioned ＜ 10, wherein, in above-mentioned middle section, in above-mentioned grammes per square metre portion high The density of absorption component is higher than above-mentioned low grammes per square metre portion.

Absorbent commodities of the ＞ of ＜ 12 as any one of the ＞ of 6 ＞ to ＜ of above-mentioned ＜ 11, wherein, in above-mentioned absorbent core Above-mentioned side region, with the grammes per square metre portion high higher of the grammes per square metre compared with the low grammes per square metre portion of bottom of above-mentioned pod is formed.

Absorbent commodities of the ＞ of ＜ 13 as described in the ＞ of above-mentioned ＜ 12, wherein, in above-mentioned side region, with above-mentioned low grammes per square metre portion Compare, the density of the absorption component in above-mentioned grammes per square metre portion high is high.

Absorbent commodities of the ＞ of ＜ 14 as any one of the ＞ of 1 ＞ to ＜ of above-mentioned ＜ 13, wherein, above-mentioned central projection Width relative to the whole width of above-mentioned absorbent core ratio be more than 20% and less than 80%.

Absorbent commodities of the ＞ of ＜ 15 as any one of the ＞ of 1 ＞ to ＜ of above-mentioned ＜ 14, wherein, above-mentioned middle section Thickness is more than 110% and less than 400% relative to the ratio of the thickness in above-mentioned side region.

Absorbent commodities of the ＞ of ＜ 16 as any one of the ＞ of 10 ＞ to ＜ of above-mentioned ＜ 15, wherein, in above-mentioned absorbability The above-mentioned middle section of core, the ratio of the grammes per square metre of the grammes per square metre relative to above-mentioned grammes per square metre portion high in above-mentioned low grammes per square metre portion for more than 5% and Less than 80%.

Absorbent commodities of the ＞ of ＜ 17 as any one of the ＞ of 7 ＞ to ＜ of above-mentioned ＜ 16, wherein, in above-mentioned middle section With the interface in above-mentioned side region, the length of the translot in the translot of the middle section and the side region in above-mentioned absorbent core Position consistency on direction.

Absorbent commodities of the ＞ of ＜ 18 as any one of the ＞ of 3 ＞ to ＜ of above-mentioned ＜ 17, wherein, in above-mentioned middle section Pod the more above-mentioned side region in bottom lower surface more on the lower.

Absorbent commodities of the ＞ of ＜ 19 as any one of the ＞ of 3 ＞ to ＜ of above-mentioned ＜ 17, wherein, in above-mentioned middle section The bottom of pod be present in the position roughly the same with the lower surface in above-mentioned side region.

Absorbent commodities of the ＞ of ＜ 20 as any one of the ＞ of 3 ＞ to ＜ of above-mentioned ＜ 17, wherein, in above-mentioned middle section Pod the more above-mentioned side region in bottom lower surface by the top.

Absorbent commodities of the ＞ of ＜ 21 as any one of the ＞ of 5 ＞ to ＜ of above-mentioned ＜ 20, wherein, in above-mentioned middle section Above-mentioned translot absorbent core of the depth relative to above-mentioned middle section whole thickness ratio be more than 50% and 95% Below.

Absorbent commodities of the ＞ of ＜ 22 as any one of the ＞ of 1 ＞ to ＜ of above-mentioned ＜ 21, wherein, above-mentioned central projection It is relative to the ratio of the whole thickness of middle section from the height of the lower surface protrusion in side region in excretory portion counterpart More than 20% and less than 90%.

Absorbent commodities of the ＞ of ＜ 23 as described in the ＞ of above-mentioned ＜ 22, wherein, above-mentioned central projection is in rear portion from side The height that the lower surface in region is protruded is more than 20% and less than 90% relative to the ratio of the whole thickness of middle section.

Absorbent commodities of the ＞ of ＜ 24 as any one of the ＞ of 1 ＞ to ＜ of above-mentioned ＜ 23, wherein, above-mentioned absorbent commodity There is front part, excretory portion counterpart and rear portion in its length direction, the above-mentioned skin of conduct in the excretory portion counterpart The left and right sides of the absorbent main body in the region that lateral plate material, non-skin lateral plate material and absorbent core are overlapped when overlooking has a pair Flank section.

Absorbent commodities of the ＞ of ＜ 25 as any one of the ＞ of 1 ＞ to ＜ of above-mentioned ＜ 24, wherein, in above-mentioned rear portion Above-mentioned absorbent main body the left and right sides have a pair of rear alar parts.

Absorbent commodities of the ＞ of ＜ 26 as any one of the ＞ of 1 ＞ to ＜ of above-mentioned ＜ 25, wherein, above-mentioned absorbent commodity It is sanitary napkin.

Industrial applicability

Next to the skin sense of the absorbent commodity of the invention when wearing is excellent, especially the sense next to the skin when pressure high is applied It is excellent.

Claims

1. a kind of absorbent commodity, it is to form the skin lateral plate material and the non-flesh for forming non-skin opposite face of skin opposite face Absorbent commodity with absorber between skin lateral plate material, the absorber is more long comprising the fore-and-aft direction along absorbent commodity The absorbent core of elongate shape, the absorbent commodity is characterised by：

The absorbent core has in excretory portion counterpart：Side region, it is located at width both sides；And middle section, its Positioned at compared with the side region is by width center side and thickness is more than the side region；

The side region is integrally formed with the middle section,

The middle section is prominent to the non-skin lateral plate material side,

Region of the absorber when overlooking where the side region has not non-with what the non-skin lateral plate material was engaged Engaging zones.

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

The part abutted with the middle section in the side region, it is highly dense higher than the middle section with density Degree portion.

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

The middle section non-skin with respect to surface side, be formed with length direction along the absorbent core and in skin phase Opposite side has the pod of bottom,

The width length of the bottom of the pod is narrower than opening portion.

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

The width length of the pod becomes narrow gradually with being gone to bottom from opening portion.

5. the absorbent commodity as any one of Claims 1 to 4, it is characterised in that：

The central translot that the width for forming the oriented absorbent core in the middle section extends.

6. the absorbent commodity as any one of Claims 1 to 5, it is characterised in that：

The side pod extended to the length direction of the absorbent core is formed with the side region.

7. absorbent commodity as claimed in claim 6, it is characterised in that：

The side translot extended to the width of the absorbent core is formed with the side region.

8. the absorbent commodity as any one of claim 3~7, it is characterised in that：

Any one of described pod and translot or both be by reducing the grammes per square metre of the absorbent material of the absorbent core and Formed.

9. the absorbent commodity as any one of claim 3~8, it is characterised in that：

The middle section of the absorbent core and the non-skin opposite face that is each in side region have concaveconvex shape, And skin opposite face is flat.

10. the absorbent commodity as any one of claim 3~9, it is characterised in that：

In the middle section of the absorbent core, with compared with the low grammes per square metre portion of bottom of the pod is formed grammes per square metre it is higher Grammes per square metre portion high.

11. absorbent commodities as claimed in claim 10, it is characterised in that：

In the middle section, the density of absorption component is higher than the low grammes per square metre portion in the grammes per square metre portion high.

12. absorbent commodity as any one of claim 6~11, it is characterised in that：

In the side region of the absorbent core, with the grammes per square metre compared with the low grammes per square metre portion of bottom of the pod is formed compared with Grammes per square metre portion high high.

13. absorbent commodities as claimed in claim 12, it is characterised in that：

In the side region, compared with the low grammes per square metre portion, the density of absorption component is high in the grammes per square metre portion high.

14. absorbent commodity as any one of claim 1~13, it is characterised in that：

The width of the central projection relative to the whole width of the absorbent core ratio for more than 20% and 80% with Under.

15. absorbent commodity as any one of claim 1~14, it is characterised in that：

The thickness of the middle section is more than 110% and less than 400% relative to the ratio of the thickness in the side region.

16. absorbent commodity as any one of claim 10~15, it is characterised in that：

In the middle section of the absorbent core, the grammes per square metre of the grammes per square metre relative to the grammes per square metre portion high in the low grammes per square metre portion Ratio is more than 5% and less than 80%.

17. absorbent commodity as any one of claim 7~16, it is characterised in that：

In the interface in the middle section with the side region, the translot of the middle section exists with the translot in the side region Position consistency on the length direction of the absorbent core.

18. absorbent commodity as any one of claim 3~17, it is characterised in that：

The lower surface in the bottom side region of the pod in the middle section is more on the lower.

19. absorbent commodity as any one of claim 3~17, it is characterised in that：

The bottom of the pod in the middle section is present in the position roughly the same with the lower surface in the side region.

20. absorbent commodity as any one of claim 3~17, it is characterised in that：

The lower surface in the bottom side region of the pod in the middle section is by the top.

21. absorbent commodity as any one of claim 5~20, it is characterised in that：

The ratio of the whole thickness of the absorbent core of the depth relative to the middle section of the translot in the middle section Example is more than 50% and less than 95%.

22. absorbent commodity as any one of claim 1~21, it is characterised in that：

The height that the central projection is protruded from the lower surface in side region in excretory portion counterpart is relative to middle section The ratio of whole thickness is more than 20% and less than 90%.

23. absorbent commodities as claimed in claim 22, it is characterised in that：

Whole thickness of the height relative to middle section that the central projection is protruded in rear portion from the lower surface in side region The ratio of degree is more than 20% and less than 90%.

24. absorbent commodity as any one of claim 1~23, it is characterised in that：

The absorbent commodity has front part, excretory portion counterpart and rear portion in its length direction, relative in the excretory portion The absorbent main body in the region that skin lateral plate material, non-skin lateral plate material and absorbent core described in portion are overlapped when overlooking The left and right sides have a pair of flank sections.

25. absorbent commodity as any one of claim 1~24, it is characterised in that：

The left and right sides of the absorbent main body in portion of side has a pair of rear alar parts in the rear.

26. absorbent commodity as any one of claim 1~25, it is characterised in that：

The absorbent commodity is sanitary napkin.