CN100531697C - Disposable diaper - Google Patents

Abstract

A disposable diaper includes an absorber (22), a top sheet (18) disposed to cover an upper surface of the absorber (22) and at least partially formed of a liquid permeable material, and a back sheet (20) disposed to cover a lower surface of the absorber (22) and formed of a liquid impermeable material. The disposable diaper further includes a skin contact sheet (24) disposed above the top sheet (18), and formed with a stool passing opening (28 a), which is an opening capable of passing a stool therethrough, and a urine/stool separation wall (48) disposed in a space (46) between the skin contact sheet (24) and the top sheet (18) for separating the space (46) into a front body part (2) side and a back body part (6) side. The urine/stool separation wall (48) is formed of a breathable water repellent sheet (52).

Description

Disposable diaper

Technical field

The present invention relates to disposable diaper, it possesses absorber; Upper strata thin slice and bottom sheet also possess the top that is configured in the upper strata thin slice and formation and make touching the skin thin slice and being used for reclaiming respectively the excretory urine of wearer and just separates walls of urine just of the peristome that just passes through.

Background technology

In recent years, as be used for infant or advanced age person's physical handicaps person diaper, be extensive use of disposable diaper, it possesses: absorber; To cover the upper strata thin slice that mode disposes, at least a portion is made of the liquid impermeable material above the absorber; And, with the bottom sheet that covers that mode below the absorber disposes and constitute by liquid impermeability material.This disposable diaper contacts with wearer's skin by the surface that makes its upper strata thin slice and is adjacent to use, the excretory urine of wearer sees through the upper strata thin slice, in the time of by absorbent body and maintenance, prevent that by the superior bottom sheet of anti-leakage Excreta from spilling to the outside of diaper.

But, in the disposable diaper of said structure,, just almost do not see through the upper strata thin slice, and remain on the thin slice of upper strata though urine sees through the upper strata thin slice.Remain on the thin slice of upper strata just owing to,, become the reason that increases give birth to children burden or nursing burden so need loaded down with trivial details wiping operation attached to wearer's crotch bottom and buttocks, become the reason of wearer's skin allergy in addition.This type of problem is in that the wearer is excretory when being soft stool, and is particularly evident.

So, proposed a kind of top at the upper strata thin slice further the disposable diaper of one piece of thin slice body of configuration (being called " touching the skin thin slice " in this manual) (for example, with reference to patent documentation 1: Japanese Utility Model is logined No. 2559050 communique (the 0010th section, Fig. 2), patent documentation 2: 2002-No. 11044 communiques of TOHKEMY, 0044-0046 section, Figure 10-Figure 12).The structure of these disposable diapers is, makes the peristome (just by using peristome) that just passes through touching to form on the skin thin slice, the wearer excretory just by it just by falling on the thin slice of upper strata with peristome.

In these disposable diapers, at first contact owing to touch the skin thin slice with wearer's skin, be difficult to directly contact wearer's skin so be configured in the upper strata thin slice that touches skin thin slice bottom.That is the skin and the upper strata thin slice of, isolating the wearer.In addition, intervention is called the shielding layer that touches the skin thin slice between upper strata thin slice and wearer's skin.Therefore, even if residual on the thin slice of front side have just, also can expect significantly to be reduced this just with the effect of the direct touch opportunity of wearer's skin.

Yet, report according to relevant, urine can produce ammonia with just blended words, this ammonia makes environment be in alkalescence, just the enzyme in is the reactivity grow in alkaline environment gas, skin is easy to part hypersensitive can cause dermatitis because of this ferment and ammonia, take place diaper rash (for example, with reference to non-patent literature 1: Yamamoto one, skin is clinical 30, P.94-959 (1998)).

Therefore, the disposable diaper of record in the patent documentation 2 has increased by upper strata thin slice or absorber and has formed rib portion in the crotch bottom of diaper, perhaps makes the absorber attenuation and forms the research of pocket portion etc. from the crotch bottom of diaper up to back body side.

The disposable diaper that patent documentation 2 is put down in writing by form rib in the crotch bottom of diaper, can suppress to urinate backward the body side shifting and just to predecessor's side shifting.In addition, utilization can suppress just to predecessor's side shifting up to the pocket portion that back body side forms from the crotch bottom of diaper.Therefore, excretory urine of wearer and dyschezia are to mix, and can expect has the effect that reduces diaper rash.

Yet the disposable diaper of patent documentation 2 record although can prevent to a certain extent to urinate and mixing just, reaches the excretory urine of wearer and just reliable separation far away and absorbs the level of maintenance, still has and urinates and the problem of just mixing situation.That is, in that excretory urine also leaves an open question with just reliable separation and absorb and keep failing to attain full and complete satisfaction on this point with the wearer.

Like this,, also unexposedly a kind ofly can prevent urine and just blended disposable diaper effectively, press for such disposable diaper in present stage.

Summary of the invention

The present invention is the scheme that proposes for the problem that solves above-mentioned prior art, provide a kind of with the excretory urine of wearer with just reliable separation and absorb and keep, and can effectively prevent to urinate and the just disposable diaper of the blended state of affairs.

The present inventor makes great efforts research in order to solve above-mentioned prior art problem, the result draws one and draws a conclusion: the disposable diaper of patent documentation 2 record is owing to leave the space on the top of formed rib portion, just cross rib portion to predecessor's side shifting, and, usually form rib portion by the upper strata thin slice that constitutes by liquid permeability thin slice (hydrophilic thin slice), so, exist urine to soak into rib portion and be seeped into the situation of body side backward, urine and separating effect just are insufficient.And, form just separates walls of the urine that constitutes by ventilative hydrophobicity thin slice touching space between skin thin slice and the upper strata thin slice, by above-mentioned space being divided into predecessor's side and back body side, expect solving above-mentioned problem, thereby finish the present invention.Specifically, utilization the invention provides following disposable diaper.

(1). a kind of disposable diaper possesses: absorber; To cover the upper strata thin slice that mode disposes, at least a portion is made of the liquid impermeable material above the above-mentioned absorber; And, dispose to cover mode below the above-mentioned absorber, by the bottom sheet that liquid impermeability material constitutes, also possess: be configured in the top of above-mentioned upper strata thin slice and formation make just be able to the peristome (just by using peristome) that passes through touch the skin thin slice; And, be configured in just separates walls of the above-mentioned urine that touches the space between skin thin slice and the above-mentioned upper strata thin slice and above-mentioned space is divided into predecessor's side and back body side, above-mentioned urine just separates walls is made of ventilative hydrophobicity thin slice, and, by above-mentioned ventilative hydrophobicity thin slice, in the sheet surface of above-mentioned upper strata above-mentioned just by with under the peristome surface at least a portion be capped.

(2). above-mentioned (1) described disposable diaper, it is characterized in that, when touching the skin thin slice and engage, the other end of above-mentioned ventilative hydrophobicity thin slice hangs down to the surface of above-mentioned upper strata thin slice to one end of above-mentioned ventilative hydrophobicity thin slice, thereby forms just separates walls of above-mentioned urine with above-mentioned.

(3). above-mentioned (2) described disposable diaper is characterized in that the above-mentioned other end of above-mentioned ventilative hydrophobicity thin slice engages with above-mentioned upper strata thin slice.

(4). any one described disposable diaper of above-mentioned (1) to (3), it is characterized in that, by above-mentioned ventilative hydrophobicity thin slice, in the sheet surface of above-mentioned upper strata above-mentioned just by with under the peristome surface 50 area % below be capped.

(5). any one described disposable diaper of above-mentioned (1) to (3), it is characterized in that, by above-mentioned ventilative hydrophobicity thin slice, above-mentioned in the sheet surface of above-mentioned upper strata just by being capped with surperficial integral body under the peristome.

(6). any one described disposable diaper of above-mentioned (1) to (5), it is characterized in that, be formed with urine on the skin thin slice by using peristome above-mentioned touching, above-mentioned urine just separates walls be configured in above-mentioned just by with peristome and above-mentioned urine by with between the peristome, and with above-mentioned space be divided into above-mentioned just by the space that is communicated with peristome and with the space of above-mentioned urine by being communicated with peristome.

Disposable diaper of the present invention can make the excretory urine of wearer with just reliable separation and absorb and keep, and can effectively prevent the urine and the just blended state of affairs.In addition, be not absorbed bulk absorption and move to back body side, and then, can prevent to urinate and the state of affairs that just directly contacts from the situation that the upper strata sheet surface oozes out and so at the urine that sees through the upper strata thin slice from the space of predecessor's side.

Description of drawings

Fig. 1 is the approximate three-dimensional map of an embodiment of expression disposable diaper of the present invention, is the approximate three-dimensional map of expression from the place ahead finding state of diaper.

Fig. 2 is the vertical view of an embodiment of expression disposable diaper of the present invention, be expression launch disposable diaper shown in Figure 1, from the vertical view of the absorbent main body side finding state of diaper.

Fig. 3 is the summary sectional view of an embodiment of expression disposable diaper of the present invention, is disposable diaper cross section shown in Figure 2 is cut off in expression along X-X ' line summary sectional view.

Fig. 4 is the summary sectional view of an embodiment of expression disposable diaper of the present invention, is disposable diaper cross section shown in Figure 2 is cut off in expression along Y-Y ' line summary sectional view.

Fig. 5 is the summary sectional view of a kind of user mode of expression disposable diaper of the present invention, is disposable diaper cross section shown in Figure 2 is cut off in expression along Y-Y ' line summary sectional view.

Fig. 6 is the planar local amplification plan view of part that disposable diaper of the present invention has been amplified in expression, is to amplify the ventilative hydrophobicity of expression disposable diaper shown in Figure 2 and touch the planar local amplification plan view of top section that the skin thin slice engages.

Fig. 7 is the vertical view of other embodiment of expression disposable diaper of the present invention, be launch disposable diaper, from the vertical view of the absorbent main body finding state of diaper.

Fig. 8 is the summary sectional view of other embodiment of expression disposable diaper of the present invention, is disposable diaper cross section shown in Figure 7 is cut off in expression along X-X ' line summary sectional view.

Fig. 9 is the summary sectional view of an embodiment of expression disposable diaper of the present invention, is disposable diaper cross section shown in Figure 7 is cut off in expression along Y-Y ' line summary sectional view.

Among the figure:

1,100 disposable diapers, 2 predecessors, 2a, the 2b side edge part, 4 crotch bottoms, 6 back bodies, 6a, the 6b side edge part, 8 junction surfaces, 10 waistline peristomes, 12,12a, the 12b lower limb encloses peristome, 14 absorbent main body, 16 exterior members, 18 upper strata thin slices, 20 bottom sheets, 22 absorbers, 24 touch the skin thin slice, the 24a upper foil, the 24b liner sheet, 26,26a, the three-dimensional rivel of 26b, 28 peristomes, 30 peristome telescopic materials, 32,32a, the 32b sheeting, ora terminalis on 34,36,36a, 36b, 36c, the three-dimensional rivel telescopic material of 36d, 38 lines that stand up, 40 lower limbs enclose telescopic material, 42 waistline telescopic materials, 44 abdominal circumference telescopic materials, 46 spaces, 48 urinate just separates walls, 52 ventilative hydrophobicity thin slices, 54 1 ends, 56 other ends, 58 folding parts, 62a, 62b, 62c, the 62d junction surface, 66 junction surfaces, 68a, 68b, 68c, the 68d junction surface, the P point

The specific embodiment

Below be that example is specifically described to the preferred implementation that is used to implement disposable diaper of the present invention with the two-piece type shorts type diaper.But broad sense of the present invention comprises and possesses the disposable diaper that it invents specific item, is not limited to following embodiment.In addition, for the ease of mapping, in Fig. 4 and Fig. 9, from figure, ignore peristome telescopic material, abdominal circumference extensible member and waistline extensible member and map, in Fig. 7 to Fig. 9, from figure, ignore and constitute the ventilative hydrophobicity thin slice urinate just separates walls and touch the skin thin slice or the upper strata thin slice is mapped.

In addition, claim " shorts type diaper " to be meant in this manual, disposable diaper 1 as shown in Figures 1 and 2 is such, corresponding side edge part ( side edge part 2a, 6a by be bonded with each other predecessor 2 and back body 6, lateral margin 2b, 6b) and form junction surface 8, waistline peristome 10 and pair of leg and enclose peristome 12a, 12b, constitute shorts type diaper in advance.And, " two-piece type " is meant, disposable diaper 1 as shown in Figure 2 is such, has the absorbent main body 14 that absorbs and keep wearer's Excreta function (absorbing, keep function) separates and establish as other the parts structure types from the exterior member 16 with parcel body function (wearing function) diaper.As Fig. 3～shown in Figure 5, absorbent main body 14 is the parts that possess absorber 22, upper strata thin slice 18 and bottom sheet 20 as structural element.

In addition, in this manual, " predecessor " is meant that the wearer covers the part of wearer's veutro (health the place ahead) when dressing diaper; " crotch bottom " is meant that the wearer covers the part under wearer's crotch when dressing diaper; " back body " is meant that the wearer covers the part of wearer's dorsal part (health the place ahead) when dressing diaper.

Below, the structure of disposable diaper of the present invention is described

Disposable diaper of the present invention is as Fig. 3～disposable diaper 1 shown in Figure 5, or Fig. 8 and disposable diaper 100 shown in Figure 9, possess: the disposable diaper of absorber 22, upper strata thin slice 18 and bottom sheet 20 also possesses: be configured in the top of upper strata thin slice 18 and formation make just be able to the peristome (just by using peristome 28a) that passes through touch skin thin slice 24; And the urine that is configured in the space of touching between skin thin slice 24 and the upper strata thin slice 18 and this space 46 is divided into predecessor's 2 sides and back body 6 sides is separates walls 48 just.

Below, illustrate and touch the skin thin slice.

Touching the skin thin slice is to be used to isolate wearer's the skin and the parts of upper strata thin slice, be configured in the top of upper strata thin slice and be formed with make just be able to the peristome (just by using peristome) that passes through touch the skin sheet material.Touch the skin thin slice by possessing this,, be difficult to directly contact with wearer's skin so be configured in the upper strata thin slice that touches skin thin slice bottom owing to touch the skin that the skin thin slice at first contacts the wearer.That is, wearer's skin and upper strata thin slice are isolated.And, be called touch the skin thin slice shielding layer between upper strata thin slice and wearer's skin.Therefore, for example, just remain in immediately on the thin slice of upper strata, also can play reduce significantly this just with the effect of wearer's the direct touch opportunity of skin.

Touch the material of skin thin slice as formation, can use non-woven fabrics that resins such as polyethylene, polypropylene, polyester for example constitute, mesh sheet material, thin film etc.Wherein, the preferred non-woven fabrics that uses on this point of feeling good.These materials can be liquid impermeable, also can be the liquid impermeability, also can be hydrophobicity.But, when long-time the use, can keep on dry and comfortable sense of touch (drying property) this point, preferably the material of hydrophobicity (non-woven fabrics of hydrophobicity).

Make the excretory peristome that just is able to pass through of wearer (just by using peristome) touching to be necessary to form on the skin thin slice.By adopting this structure, the wearer is excretory just to fall on the thin slice of upper strata by touching the skin thin slice, can reduce just the chance that directly contacts with wearer's skin significantly.

Peristome is not particularly limited for this shape so long as the shape that just is able to pass through is got final product.That is, make " peristome " that just be able to pass through, except so-called peristomes (hole) such as circular open portion, elliptical openings portion, diamond opening portion, also comprise linearity slit, crosswise slit, make the slit in star slit that three above slits intersect etc.Wherein, be the elliptical openings portion or the star slit of long axis direction preferably with the fore-and-aft direction (than length direction) of diaper.Elliptical openings portion has makes the advantage of being convenient to by the peristome that touches the skin thin slice, the advantage in star slit is: just just in case fallen on the thin slice of upper strata by the peristome that touches the skin thin slice, can prevent effectively that these from just exposing and the wearer's that makes dirty buttocks from the peristome that touches the skin thin slice once more.

For example, disposable diaper 1 shown in Figure 2 is as just passing through to use peristome 28a on the part of the crotch bottom 4 that is equivalent to diaper of touching skin thin slice 24, and formation is long along the fore-and-aft direction of diaper, its 6 angles are the example that slightly is hexagon shape peristome of circular shape, disposable diaper 100 shown in Figure 7 be on the part of the crotch bottom 4 that is equivalent to diaper of touching skin thin slice 24 as just by use peristome 28a, and formation is with the fore-and-aft direction of the diaper example as the elliptical openings portion of long axis direction.In addition, for the size in hole or slit, can suitably determine after the function of " make just be able to by " having considered.

In addition, also can form urine by using peristome on just by forward body side touching on the skin thin slice than above-mentioned with peristome.That is, preferably touching on the skin thin slice as peristome, form just by with peristome and urine by using opening.

As mentioned above, by forming urine by using peristome, can make the excretory urine of wearer by the reliable space of touching between skin thin slice and the upper strata thin slice that flows into of its peristome, can prevent effectively that urine from spreading in touching the skin thin slice, and the situation of horizontal leakages such as peristome takes place to enclose from the lower limb of diaper.For example, disposable diaper 1 shown in Figure 2 is as peristome 28a, slightly be hexagonal touching not only to be formed with on the skin thin slice 24, also be formed with along the obtuse-angulate example that slightly is the urine of hexagonal configuration by usefulness peristome 28b of dihedral of the front side that fore-and-aft direction is long, its six angles are circular shape and diaper of diaper just by use peristome 28a.Disposable diaper 100 shown in Figure 7 is as peristome 28a, touch not only be formed with on the skin thin slice 24 ovalize slightly just by use peristome 28a, also be formed with the example of the urine of elliptical shape by usefulness peristome 28b.In these examples, just by be formed at the part of suitable diaper crotch bottom 4 with peristome 28a, urine is by being formed at peristome 28b than the part of just passing through with more forward body 2 sides of peristome 28a.

Above-mentioned peristome is preferably in and disposes extensible member (peristome telescopic material) on its outer rim.If configuration opening extensible member, then, touch the skin thin slice and have toughness so can make because tension force is applied to and touches on the skin thin slice.Therefore, touching the skin thin slice can be adjacent to, thereby can prevent to fall into the situation of upper strata thin slice side, has to make to touch the advantage that the skin thin slice is easy to contact wearer's skin.And, if configuration peristome telescopic material, then can make and touch the skin thin slice and shrink, can be to upper strata thin slice, absorber, bottom sheet effect flexural force to downside (exterior member side).Therefore, can make and touch the skin thin slice and keep the state that floats from the upper strata thin slice.Thereby can make and touch the skin thin slice and the upper strata thin slice is kept apart reliably.Have again, touch the skin thin slice, even also can imbed its space touching skin thin slice or upper strata thin slice and become under the situation that the space is arranged between the space of urinating just separates walls by contraction.Therefore, can reliably separate the space of touching between skin thin slice and the upper strata thin slice.

As the opening extensible member, can suitably use the extensible member that in the disposable diaper that now comes, uses.Specifically, the wire rubber that constitutes except the elastomeric material of natural rubber or synthetic rubber (polyurethane rubber etc.), the flat rubber, also can enumerate retractility net, retractility thin film, retractility foam plastics (polyurethane foam etc.) etc.

The configuration pattern of peristome telescopic material so long as bring into play the pattern of above-mentioned effect, is not particularly limited, but for contractility is acted on the peristome reliably, preferred disposition becomes the peristome telescopic material to surround the such pattern of peristome periphery.For example, surrounding peristome week border district configuration peristome telescopic material with patterns such as circle, ellipse, rhombuses gets final product.

In addition, as the peristome telescopic material, use two peristome telescopic materials, these two peristome telescopic materials intersect 1 of the front and back of peristome at least, are configured to surround the such pattern of a peristome periphery part and also are one of preferred pattern.With such pattern arrangement peristome telescopic material, owing to can dispose the peristome telescopic material continuously, be easy to make the advantage of disposable diaper continuously and be preferred so have to the fore-and-aft direction of diaper.

For example, disposable diaper 1 shown in Figure 2, disposable diaper 100 shown in Figure 7 are as peristome telescopic material 30, use two peristome telescopic material 30a, 30b, these two peristome telescopic material 30a, 30b, are configured to surround and just pass through with peristome 28a and the example of urine by a part of pattern of the periphery of using peristome 28b by using peristome 28a and urine to pass through to intersect with the some P between the peristome 28b just.With this pattern arrangement peristome telescopic material 30,30b, can make easily as alongst disposing the absorbent main body continuum of absorbent main body 14 continuously.

In addition, disposable diaper 1, disposable diaper 100 shown in Figure 7 shown in Figure 2 constitute its peristome telescopic material 30a, the 30b configuration in central authorities' intersection of crotch bottom 4.By constituting this configuration, than predecessor's 2 sides of diaper or back body 6 more by under near crotch bottom 4 (that is, put P) increasing effect to the contractility of width (diaper left and right directions).Therefore, even in touching skin thin slice 24, also can have than be easier to relax, make just the effect that is adjacent to wearer's skin by peristome 28a and urine by the part between the peristome 28b.Have, diaper 1 its opening extensible member 30a, 30b as shown in Figure 2 do not intersect beyond the P of the central point of crotch bottom 4 again, and be configured to will be just the pattern that opens wide of the periphery of back body 6 sides by peristome 28a and the urine periphery by predecessor's 2 sides of peristome 28b.By constituting such configuration, excessively be not adjacent to wearer's skin owing to touch predecessor's 2 sides or back body 6 sides of skin thin slice 24, so can guarantee breathability.Therefore, suppress owing to contacting the perspiration that causes with touching the skin thin slice, thus the allergy or the erythra that can effectively prevent to perspire and cause.

Aforesaid peristome telescopic material utilizes bonding agent or other method and touches the skin thin slice and fix.As fixing means, for example, both can be to use hot-melt adhesive, other mobile high bonding agent bonding also can be the welding based on the utilization heat of heat seal or ultrasound wave etc.

For to touching the enough contractilities of skin thin slice effect, so preferably fixing under elongation state.For example, be under natural rubber or the elastomeric situation at the peristome telescopic material, preferably fixing under 100～400% elongation state, more preferably fixing under 200～300% elongation state.Fix by elongation state,, and can prevent that peristome from narrowing down to more than the needs the competent contractility of peristome effect with this scope.

Though the collocation method of peristome telescopic material is not particularly limited, but preferred collocation method is: disposable diaper 1 for example shown in Figure 3, disposable diaper 100 shown in Figure 7 is such, touch skin thin slice 24 by two plate sheet materials (upper foil 24a and lining pad 24b) are pasted with formation, and between upper foil 24a and lining pad 24b, sandwich configuration peristome telescopic material 30a, 30b.Adopt this collocation method, when adopting this collocation method, utilize minimal telescopic material to come touching the effect that the skin thin slice applies contractility owing to can play, and comparatively desirable.

Fig. 2 and disposable diaper 1, Fig. 7 and disposable diaper 100 shown in Figure 8 shown in Figure 3 are as touching the structure that skin thin slice 24 uses the whole surface configuration that covers upper strata thin slice 18.But the skin thin slice that touches in the disposable diaper of the present invention is not limited to thisly, more gets final product by the thin slice body on top so long as be configured in than upper strata thin slice.

As the fixing means that touches the skin thin slice, can enumerate following method: (1) as shown in Figure 3 disposable diaper 1, disposable diaper 100 shown in Figure 7 are such, fixedly touch the method for skin thin slice 24 on the adhesive portion of the sheet material 32a, the 32b that constitute three- dimensional rivel 26a, 26b and upper strata thin slice 18 (or bottom sheet 20) in the mode that sandwiches; (2) on the upper end-face edge of the three-dimensional rivel of the medial surface of three-dimensional rivel and the part between the lower edge (erecting line), fixedly touch method of skin thin slice etc.Also have, it is not contacted with touching the skin thin slice, be fixed in the medial region of surrounding by paired three-dimensional rivel with touching the skin thin slice.For example can enumerate, (so-called safe edge portion) fixedly touches method of skin thin slice etc. on (3) adhesive portion by the upper strata thin slice of the absorbent main body in the three-dimensional rivel area surrounded and bottom sheet.In these methods, touch on the higher this point of effect that the skin thin slice is adjacent to wearer's skin the method for preferred (1) making.

Below, illustrate and urinate just separates walls.

Urinate just that separates walls is to be used to separate excretory urine of wearer and parts just, constitute, be configured in the space of touching between skin thin slice and the upper strata thin slice by ventilative hydrophobicity thin slice.Owing to possess this and urinate just separates walls, separates walls is that the border is divided into predecessor's side and back body side to urinate just with touching space between skin thin slice and the upper strata thin slice, and urine is introduced into the space of predecessor's side, just is introduced into the space of back body side.And this urinates just separates walls owing to constitute with ventilative hydrophobicity thin slice, so, see through the urine that thin slice is introduced into predecessor's side and can not be exuded to back body side.Therefore, can effectively prevent urine and just mix, thereby can suppress owing to urine and the generation that just mixes the diaper rash that causes.

In disposable diaper of the present invention, urinating just, separates walls need be made of ventilative hydrophobicity thin slice.Because the liquid permeability of ventilative hydrophobicity thin slice is low, make the urine and the just blended state of affairs from urinating just separates walls and oozing out so can effectively prevent urine or soft stool.In addition, urinated just separates walls though also consider to be made of the employed the sort of liquid impermeability thin slice of bottom sheet, the occasion using liquid impermeability thin slices such as plastic sheeting has following problem: (1) is not owing to there is breathability, so easily take place sultry; (2) owing to lacking flexibility or product having shape-following-up properties, so low with the fit of wearer's body.In addition, the occasion from the peristome that touches the skin thin slice exposes and contacts with wearer's body exists (3) to feel bad, also feels to leave on the surface discomfort of soaking sometimes.As disposable diaper of the present invention, urinate just separates walls by constituting by ventilative hydrophobicity thin slice, when preventing initial above-mentioned the sort of discomfort, can bring into play making the excretory urine of wearer and just being difficult to blended excellent results.

Constituent material as ventilative hydrophobicity thin slice, can use non-woven fabrics such as closing fine long fibre or card embossing, but because water pressure resistance height and so on reason, better be to use the non-woven fabrics of SMS (close fine long fibre/melt and spray/close fine long fibre), SMMS (close fine long fibre/melt and spray/melt and spray/close fine long fibre) etc.

Should ventilative hydrophobicity thin slice with the one end when touching the skin thin slice and engage, make its other end hang down into the surface of upper strata thin slice, urinate just separates walls thereby can form.Like this, the end by the hydrophobicity thin slice of will breathing freely engages with touching the skin thin slice, can prevent to urinate or just move by urinating just the space on separates walls top.In addition, the other end of ventilative hydrophobicity thin slice preferably engages with the upper strata thin slice.The other end by the hydrophobicity thin slice of will breathing freely engages with the upper strata thin slice, does not depart from and is firmly fixed owing to urinate just the separates walls position, so the space of touching between skin thin slice and the upper strata thin slice can be divided into predecessor's side and back body side reliably.

For example, Fig. 3 and disposable diaper 1, Fig. 8 and disposable diaper 100 shown in Figure 9 shown in Figure 4 be formation touch skin thin slice 24 liner sheet 24b surface (below) engage to constitute and to urinate a just end of the ventilative hydrophobicity thin slice 52 of separates walls 48, make the other end hang down into the surface of upper strata thin slice 18, the example that engages with upper strata thin slice 18 surfaces (top) afterwards.

Disposable diaper of the present invention, the distance of an end (touching the junction surface of skin thin slice) with the other end (junction surface of upper strata thin slice) by the ventilative hydrophobicity thin slice that extends, can make and urinate just that erecting highly of separates walls uprises, touch the skin thin slice and the upper strata thin slice separates reliably thereby can make.At this moment, ventilative hydrophobicity thin slice is preferably between the one end and the other end and folds one time or several times.If become this structure, then as shown in Figure 5, can form telescopic folding part along the vertical direction on the separates walls urinating just.This folding part is left upper strata thin slice 18 and is stretched along with touching skin thin slice 24 when using diaper, so can guarantee to urinate the height that erects of just separates walls 48.In addition, when being formed with this folding part, restrain on this aspect of action that touches skin thin slice 24 also useful and be preferred urinating just separates walls 48.Have again, it is characterized in that, even constitute the situation of ventilative hydrophobic thin slice at lengthening, just by with peristome or urine by also being difficult to by this ventilative hydrophobic sheet covers with the upper strata thin slice under the peristome.Therefore, the advantage that has is to utilize ventilative hydrophobic thin slice described later, is not easy to urinate the problem that absorption to absorber is hindered and so on.

As the method for folding ventilative hydrophobicity thin slice, can enumerate following method for folding: making ventilative hydrophobicity thin slice is that the mode of Z word shape (folding twice), M word shape (folding 3 times), corrugated (number of folds is returned) folds with being seen cross section from the side.For example, disposable diaper 1 shown in Figure 4, disposable diaper 100 shown in Figure 7 are that ventilative hydrophobicity thin slice 52 is folded into (situation that this method for folding is called " Z-folded " is arranged) behind the Z word shape of cross section, one end of ventilative hydrophobicity thin slice 52 engages the example that the other end engages with upper strata thin slice 18 with touching skin thin slice 24.In these examples, the part (for example, folding part) beyond an end 54 of ventilative hydrophobicity thin slice 52, the other end 56 is in respect to touching the disengaged state of skin thin slice 24 or upper strata thin slice 18.

In disposable diaper of the present invention,, needn't divide the space fully as long as the space of touching between skin thin slice and the upper strata thin slice is separated into predecessor's side and back body side.For example, there is the space left and right sides of separates walls 48 to disposable diaper 1 shown in Figure 3 urinating just, and space 46 is communicated with between predecessor's side and back body side, is difficult to mix excretory urine of wearer and effect just but also have like this, is also contained in the scope of the present invention.Promptly, because absorber 22 is deformed into the cross section and is U word shape when dressing diaper, so by this space, and common owing to be that excretory urine is absorbed bulk absorption rapidly, after unabsorbed urine flows into by above-mentioned space almost there be not the spatial probability of body side urine with just when reality was used.

Disposable diaper of the present invention, by ventilative hydrophobicity thin slice, just being capped in the sheet surface of upper strata by at least a portion with surface under the peristome.If make this structure, then has " urine that sees through the upper strata thin slice in the space from predecessor's side is not absorbed bulk absorption and moves to back body side, and then from the situation that the upper strata sheet surface oozes out and so on, can prevent to urinate and the state of affairs that just directly contacts " such advantage.This situation, by making ventilative hydrophobicity thin slice to the bonding station that touches the skin thin slice and approaching to the bonding station of upper strata thin slice, in other words, the distance of the diaper fore-and-aft direction by shortening two bonding stations, can urine reducing by with peristome or urine by with the upper strata sheet surface under the peristome by the area of ventilative hydrophobicity sheet covers.For example, when the wearer was girl, the wearing position of diaper (front and back position) easily departed from, and also can produce urine from just by flow into the spatial situation touch between skin thin slice and the upper strata thin slice with peristome.This situation, when because the ventilative hydrophobicity thin slice that hangs down into upper surface has strengthened when just becoming big by the area that is capped with the upper strata sheet surface under the peristome, the absorption of urinating to absorber in this part is hindered, and might become the reason of leakage of urine.Therefore, preferably by make ventilative hydrophobicity thin slice to the bonding station that touches the skin thin slice and to the bonding station of upper strata thin slice near (promptly, shorten the distance of the diaper fore-and-aft direction of two bonding stations), urine reducing is by the area by being covered by ventilative hydrophobicity thin slice with the upper strata sheet surface under the peristome with peristome or urine.

As mentioned above, make ventilative hydrophobicity thin slice to the bonding station that touches the skin thin slice and to the bonding station of upper strata thin slice near (promptly, shorten the distance of the diaper fore-and-aft direction of two bonding stations) situation, utilize the ventilative hydrophobicity thin slice that engages with the upper strata thin slice, make just by the area by being capped with the upper strata sheet surface under the peristome with peristome or urine, use at adult diaper, infant below all preferred 50 area % of situation of diaper, more preferably below the 30 area % at its peristome area.For example, Fig. 2 and disposable diaper 1 shown in Figure 4 are to shorten junction surface 62b, 62d to constitute with distance between the junction surface 66 for the infant diaper, just by having been covered about 30% the example that is equivalent to just to pass through to use the peristome aperture area by ventilative hydrophobicity thin slice 52 with 18 surfaces of the upper strata thin slice under the peristome 28a.

In addition, disposable diaper of the present invention also can be covered by the folding part of ventilative hydrophobicity thin slice just by passing through with the upper strata sheet surface under the peristome with peristome or urine.Because the folding part of ventilative hydrophobicity thin slice does not engage with the upper strata thin slice but moves freely, thus such as already described, be difficult to produce the problem that the reason and so on of leakage of urine is urinated, become to absorbent body that hinders.

On the other hand, disposable diaper of the present invention by in the sheet surface of ventilative hydrophobicity sheet covers upper strata just by also being one of optimal way with surperficial integral body under the peristome.If constitute like this, the advantage that has is: the urine that sees through the upper strata thin slice in the space from predecessor's side is not absorbed bulk absorption and moves to back body side, and then from the situation that the upper strata sheet surface oozes out and so on, can prevent to urinate and the state of affairs that just directly contacts.

For example, as Fig. 7 and disposable diaper 100 shown in Figure 9 is to be made into the end that makes ventilative hydrophobicity thin slice 52 and to touch skin thin slice 24 and engage, and make this ventilative hydrophobicity thin slice 52 hang down into the surface of upper strata thin slice 18, cover upper strata thin slice 18 example of the part of body 6 side surfaces afterwards again.In this embodiment, just passing through in the surface of upper strata thin slice 18 covers with the whole hydrophobicity thin slice 52 of being breathed freely in the surface under the peristome 28a.

In disposable diaper of the present invention, urinate just that separates walls preferably is configured in the crotch bottom, be more preferably to be configured in the part that contacts with wearer's perineal position.By urinating just separates walls in the configuration of such part, can separate reliably the excretory urine of wearer with just.For example, disposable diaper 1 as shown in Figure 4 is the crotch bottom 4 at diaper, more specifically says so and urinates the just example of separates walls 48 in the part configuration that contacts with wearer's perineal position.

On touching the skin thin slice, form just by with peristome and urine by with these two peristomes of peristome the time, preferably will urinate just separates walls be configured in just by with peristome and urine by with between the peristome.Separates walls will be configured on such position by urinating just, can with touch space between skin thin slice and the upper strata thin slice be separated into just by the space that is communicated with peristome and with the space of urine by being communicated with peristome.Thereby can separate more reliably the excretory urine of wearer with just.For example, disposable diaper 1 shown in Figure 4 be just by with peristome 28a and urine by between with peristome 28b with predecessor's 2 sides of separating diaper and afterwards the mode of body 6 sides dispose and urinate the just example of separates walls 48.

In addition, constitute and to urinate just that the length of the ventilative hydrophobicity thin slice of separates walls is not particularly limited, consider and urinate just that the required length of back use such as the height of separates walls (touching the interval of skin thin slice and upper strata thin slice), folding part size, bonding station get final product.

Below, absorber is described.

Absorber is the parts that are used to absorb, keep wearer's urine.Because absorber needs to absorb, keep wearer's urine or body fluid, so be made of absorbent material.

As the absorbent material that constitutes absorber, can enumerate the normally used existing known absorbent material of disposable diaper and other absorbent commodity, for example discongest paper pulp, high water absorbency polymer (SuperAbsorbent Polymer, below brief note is SAP), hydrophilic thin slice etc.As discongesting paper pulp, the preferred use separated the material that is woven to continuous shape with wood pulp and non-wood pulp; Preferably use sodium polyacrylate as SAP, preferably use tulle, absorption paper, carried out the non-woven fabrics of hydrophilic treated as the hydrophilic thin slice.

These absorbent materials use with the cushion of single or multiple lift usually.At this moment, both a kind of independent use in the above-mentioned absorbent material also can two or morely can be used simultaneously.Wherein, preferably discongest the SAP that paper pulp uses 10～500 quality to divide simultaneously with respect to 100 quality branches.At this moment, SAP both can be mixed into equably to discongest and make pad in the paper pulp again, also can be layeredly be configured in multilamellar discongest paper pulp the layer between.

Absorber need be assembled at least a portion between upper strata thin slice and bottom sheet.Usually, absorber is assembled between upper strata thin slice and bottom sheet by being clipped between upper strata thin slice and the bottom sheet and sealing its peripheral part.Therefore, the peripheral part at absorber has then formed the safe edge portion that absorber is not housed between upper strata thin slice and bottom sheet.

Absorber is preferably wrapped its integral body with the hydrophilic sheet material.The advantage of this structure is to prevent that SAP from leaking from absorber, can make the shape of absorber more stable.

Though the shape for absorber is not particularly limited, can use conventional disposable diaper and the employed shape of other absorbent commodity, for example can enumerate rectangle, the type of using a sand filter for marking the hours, calabash shape, T font etc.

Then, the upper strata thin slice is described.

The upper strata thin slice is the thin slice that is configured to cover top (being positioned at wearer's skin one side when dressing diaper) of absorber.The upper strata thin slice is owing to need be below being disposed at it absorb wearer's urine in absorber of side, so at least a portion (its all or part of) is made of the liquid permeability material.

As the liquid permeability material that constitutes the upper strata thin slice, for example can enumerate: weave cotton cloth, non-woven fabrics, porous film etc.Wherein, preferably use the material of the non-woven fabrics that is made of thermoplastic resins such as polypropylene, polyethylene, polyester, nylon having been implemented hydrophilic treated.

Though the upper strata thin slice can be made of single sheeting, also can constitute by the multiple sheet material.For example, in tape-type diaper described later, often utilize following mode: the central part at diaper disposes the upper strata thin slice (central sheet) that the liquid permeability material constitutes, and partly disposes the upper strata thin slice (side thin slice) of hydrophobic material formation at the side wing flap of diaper.

Then, bottom sheet is described.

Bottom sheet is to cover below the absorber (when dressing diaper, being positioned at the face of wearer's garment side) and the thin slice of configuration.Because bottom sheet need prevent that wearer's urine from leaking into the diaper outside, so be made of the opaque liquid material.

As the liquid-tight material that constitutes bottom sheet, for example can enumerate: the liquid impermeability thin film that resins such as polyethylene constitute etc.Wherein, preferably use little porous polyethylene film, this little porous polyethylene film forms the micropore of a plurality of 0.1～number μ m, though be the liquid impermeability, has poisture-penetrability, can prevent the inner air-locked advantage of diaper so have.

In addition, on bottom sheet, can also be at its outer surface one side applying sheeting (guard shield thin slice).This guard shield thin slice is reinforced bottom sheet, owing to the feel that makes bottom sheet (sense of touch) is well used.

As the material that constitutes the guard shield thin slice, for example can enumerate: weave cotton cloth, non-woven fabrics etc.Wherein, preferably use dry type non-woven fabrics, the Wet-laid non-woven fabric that constitutes by thermoplastic resins such as polyethylene, polypropylene, polyester.

Below, absorbent main body is described.

In two shorts type diapers, keep parts that are called " absorbent main body " of function to constitute as having to absorb upper strata thin slice, bottom sheet and absorber, by being engaged with the exterior member of making in addition, it constitutes disposable diaper.This absorbent main body and sanitary napkin etc. are the same, are that side configuration bottom sheet is made the structure that absorber is assembled between upper strata thin slice and bottom sheet below at the upper face side configuration upper strata of absorber thin slice.For example, Fig. 3 and disposable diaper 1 shown in Figure 4, Fig. 8 and disposable diaper 100 shown in Figure 9, be that absorber 22 is sandwiched between upper strata thin slice 18 and the bottom sheet 20, by the periphery of sealing absorber 22, constitute the example of absorber 22 being got involved the absorbent main body 14 that is contained in the structure between upper strata thin slice 18 and the bottom sheet 20.

Absorbent main body is made the size that can cover diaper crotch bottom at least.But in order to bring into play leak preventing effect reliably, its size is preferably made and can not only covers the crotch bottom, can also cover the part of predecessor and back body.Absorbent main body for example can use hot-melt adhesive etc. to be fixed on the exterior member.

Below, exterior member is described.

Exterior member is the parts of dressing function that have that are used to coat wearer's body, specifically, is the laminar parts that form predecessor's side, crotch bottom and each one of back body side.

In two shorts type diapers, for absorbing, keep the excremental absorption of wearer to keep function, owing to realizing by absorbent main body specially, so the material as constituting exterior member needn't use the opaque liquid material.As the material that constitutes exterior member, can enumerate non-woven fabrics that the synthetic fibers that for example are made of polyethylene, polypropylene, polyester and other thermoplastic resin constitute etc.

And exterior member is often made the non-woven fabrics more than two is pasted the structure that forms for the state of telescopic material is fixed around the lower limb to sandwich.For example, disposable urine 1 shown in Figure 2, disposable urine 100 shown in Figure 7, be to constitute exterior member 16, and between these 2 pieces of non-woven fabrics, sandwich lower limb and enclose extensible member 40, waistline extensible member 42 and abdominal circumference extensible member 44 and give fixed example by two pieces of non-woven fabrics.

Below, various telescopic materials are described.

In pull-on disposable diaper, dispose around the lower limb telescopic material around the telescopic material and waist usually, preferably also dispose abdomen telescopic material on every side with ining addition.

It is the telescopic material that encloses the peristome configuration along lower limb that lower limb encloses telescopic material.Enclose telescopic material by disposing this lower limb, can enclose peristome at lower limb and form the rivel (shank rivel) that is rich in retractility.Therefore, enclose at lower limb and to be difficult to form the gap, can effectively prevent to urinate to enclose spilling of peristome from lower limb.

The waistline telescopic material is the telescopic material along the configuration of waistline peristome.By configuration waistline extensible member, can form the rivel (waist rivel) that is rich in retractility at the waistline peristome.By this waist rivel, be difficult to form the gap at waistline, can prevent to urinate from the spilling of waistline peristome, in addition, diaper improves to wearer's fit, prevents that diaper from gliding.

The abdominal circumference telescopic material is to be configured in the waistline peristome and lower limb encloses the telescopic material of the part (that is the part that, is equivalent to wearer's abdominal circumference) between the peristome.By configuration abdominal circumference extensible member, can form the middle part rivel that is rich in retractility at wearer's abdominal circumference.This middle part rivel and waist rivel interact, the effect that can further optimize the fit of diaper and prevent to glide.

Also have, Fig. 1 and disposable diaper 1 shown in Figure 2, disposable diaper 100 shown in Figure 7 are to enclose telescopic material 40 at a plurality of lower limbs of circumferential arrangement that lower limb encloses peristome 12a, 12b, periphery at waistline peristome 10 disposes a plurality of waistline telescopic materials 42 in the mode of surrounding waistline peristome 10, and, enclose part (that is the part that, is equivalent to wearer's abdominal circumference) between peristome 12a, the 12b disposes a plurality of abdominal circumference telescopic materials 44 in the mode of surrounding wearer's abdominal circumference example at waistline peristome 10 and lower limb.

For these telescopic materials, can adopt and the identical structure of having stated of peristome telescopic material.And, after considering the shrinkage degree of rivel, decide the percentage elongation of constituent material, this material, fixed elongation state etc. to get final product.

Below, three-dimensional rivel is described.

In order to prevent the horizontal leakage of the excretory urine of wearer, can have three-dimensional rivel.Three-dimensional rivel is the parts that are used to prevent the horizontal leakage of the excretory urine of wearer, is to constitute the spatial leakproof wall of holding up.By forming this three-dimensional rivel, though homaluria to touch on the skin thin slice, urine is along the situation of touching the diffusion of skin thin slice, three-dimensional rivel becomes anti-ripple body, can prevent to enclose from the lower limb of diaper the leakage (so-called " transverse leakage ") of peristome etc. effectively.

The structure of three-dimensional rivel can adopt conventional disposable diaper and the employed structure of other absorbent commodity.For example, can suit to use on the part of ventilative hydrophobicity thin slice and dispose telescopic material (three-dimensional rivel telescopic material), on sheeting, form the structure of rivel (pleat) etc. by its three-dimensional rivel telescopic material.

Fig. 2 and disposable diaper 1, Fig. 7 and disposable diaper 100 shown in Figure 8 shown in Figure 3 be by make with upper strata thin slice 18 or bottom sheet 20 distinct sheeting 32a, 32b be fitted in absorbent main body 14 both side edges portion, and can be from erecting the structure that line 38 erects, thereby form the example of a pair of three-dimensional rivel 26a, 26b.In this embodiment, the end (end that is equivalent to upper end-face edge 34 sides of three- dimensional rivel 26a, 26b) of sheeting 32a, 32b of turning back disposes two three-dimensional rivel telescopic material 36a, 36b or three-dimensional rivel telescopic material 36c, 36d in the mode that sandwiches in this fold back portion.

Below, manufacture method is described:

Below, the example during with the disposable diaper 1 (two-piece type shorts type diaper) of shop drawings 1～shown in Figure 6 illustrates an example of the method for making disposable diaper of the present invention.

Below, the manufacturing of absorbent main body is described.

The absorber 22 that configuration is encased by the hydrophilic sheet material on bottom sheet 20 disposes upper strata thin slice 18 more in the above.Subsequently, seal being absorbed property main body 14 by the surrounding edge portion of clamping absorber 22 with upper strata thin slice 18 and bottom sheet 20.

Secondly, the manufacturing of touching the skin thin slice.

On liner sheet 24b with fixed two peristome telescopic materials of pattern arrangement 30a, 30b, and paste upper foil 24a.At this moment, 2 peristome telescopic material 30a, 30b be configured to form in the back just by with peristome 28a and urine by intersecting with the some P between the peristome 28b, and surround just by with peristome 28a and urine by pattern with the part of peristome 28b periphery.

Secondly, on liner sheet 24b that pastes and upper foil 24a, form just by using peristome 28a and urine by using peristome 28b.Like this, two peristome telescopic material 30a, 30b just by with peristome 28a and urine by intersecting with the some P between the peristome 28b, obtain being configured to surround just by with peristome 28a with urinate by the double-deck skin thin slice 24 that touches with the pattern of the part of the surrounding edge of peristome 28b.

Then, an end 54 of the ventilative hydrophobicity thin slice 52 of Z-folded is pasted and engage the surface that is fixed at liner sheet 24b (below), just by with peristome 28 and urine by with on the position between the peristome 28b ( junction surface 62a, 62b, 62c, 62d).Like this, obtain setting up become the ventilative hydrophobicity thin slice 52 of urinating just separates walls 48 touch skin thin slice 24.At this moment, ventilative hydrophobicity thin slice is not limited to Z-folded, uses folding for several times structure also can.The known bonding method of using in the time of should fixing can utilizing manufacturing disposable diapers such as caking, the pressurization of bonding or heated sealant, ultrasonic sealing, embossing roller etc. of bonding agent such as hot-melt adhesive be bonding carries out.Disposable diaper 1 shown in Figure 4 be with hot-melt adhesive will breathe freely an end 54 of hydrophobic thin slice 52 stick on the surface of liner sheet 24b rejoin, fixed example.

The manufacturing of three-dimensional rivel then, is described.

Then by the part of turning back at this, paste with the state of clamping two three-dimensional rivel telescopic material 36a, 36b (36c, 36d) the turn back end of sheeting 32a (32b), obtains three-dimensional rivel 26a (26b).

Then, explanation will be touched skin thin slice etc. and will be arranged on the absorbent main body.

On the surface of the upper strata thin slice 18 that constitutes absorbent main body 14, engage, fixedly touch front, rear end side, the left and right sides edge side (junction surface 68a, 68b, 68c, 68d) of skin thin slice 24 (liner sheet 24b) respectively.At this moment, the other end 56 with ventilative hydrophobicity thin slice 52 sticks on the surface of upper strata thin slice 18 and engages, fixes (junction surface 66).These are fixing can to utilize to join to the hydrophobicity thin slice of will breathing freely and touches joint method same on the skin thin slice and carry out.At this moment, the hydrophobicity thin slice of preferably will breathing freely make between the joint elements at its two ends folding once or structure for several times, can make and urinate just that erecting highly of separates walls uprises.Disposable diaper 1 shown in Figure 4 is the example that ventilative hydrophobicity thin slice 52 is carried out Z-folded and become twice foldable structure.In addition, the leading section at junction surface 66 forms when using diaper and urinates the just line that stands up of separates walls 48.Disposable diaper 1 shown in Figure 6 be with the other end 56 that hot-melt adhesive will touch front, rear end side, left and right sides edge side and the ventilative hydrophobicity thin slice 52 of skin thin slice 24 paste a surface of paying at upper strata thin slice 18 (above) on rejoin, fixed example.

As mentioned above, the other end 56 that will touch front, rear end side, left and right sides edge side and the ventilative hydrophobicity thin slice 52 of skin thin slice 24 (liner sheet 24b) pastes to be paid after on the surface of upper strata thin slice 18, with the mode that sandwiches absorbent main body 14 and touch the lateral edges of skin thin slice 24 (liner sheet 24b) fit three- dimensional rivel 26a, 26b.

The manufacturing of exterior member then, is described.

At first, prepare two non-woven fabrics as exterior member 16, top configuration waistline extensible member 42, abdominal circumference extensible member 44 and the lower limb of a slice non-woven fabrics enclose extensible member 40 and are adhesively fixed therein.And,, thereby obtain external packing component 16 that telescopic material 40 around telescopic material 44 and the lower limb around telescopic material 42, the abdomen around the waist is assembled between two non-woven fabrics by another sheet non-woven fabrics of lamination in the above and fixing.

The manufacturing of disposable diaper is described at last:

Configuration and attaching absorbent main body 14 near the crotch bottom of exterior member 16.Secondly, by be inboard with absorbent main body 14, alignment predecessor 2 and back body 6 and doubling, utilize method such as heat seal with predecessor 2 and back body 6 joints with formation junction surface 8, can shop drawings 1～disposable diaper 1 shown in Figure 4.

Series of processes as described above utilizes mechanical mechanism to carry out continuously.For example,, can make disposable diaper continuously, help to enhance productivity by method or the device that adopts that the sheet material that will grow or telescopic material are sent continuously etc. from roller.

Below, applicable object of the present invention is described.

The applicable object of disposable diaper of the present invention is not limited to above-mentioned two-piece type shorts type diaper, for example also goes for single-piece shorts type diaper or tape-type diaper.That is, in these disposable diapers, the skin thin slice is touched in configuration on the top leaned on than upper strata sheet surface, and the urine that is made of ventilative hydrophobicity thin slice by configuration is separates walls just, can obtain the effect of disposable diaper of the present invention.

Also have, so-called " one chip " is meant, same with two-piece type, possess upper strata thin slice, bottom sheet, absorber, absorb and keep the absorber of function between upper strata thin slice and bottom sheet, assemble (built-in) but bear, and with the diaper of the type of bearing the upper strata thin slice of wearing function and/or bottom sheet one formation.

In addition, " tape-type diaper " is meant and possesses the upper strata thin slice, bottom sheet, is assembled into the absorber of at least a portion between two and wears the bracelet spare of usefulness; The disposable diaper that utilizes bracelet spare the predecessor and the back body of diaper can be interfixed." tape-type diaper " though also there be " one chip " and " two-piece type " equally with shorts type diaper, disposable diaper of the present invention goes for the tape-type diaper of any type.

Disposable diaper of the present invention can be suitable as infant with, the person or the diaper of adult's usefulness such as people with disability and using at advanced age that maybe needs to nurse.And disposable diaper of the present invention be owing to can effectively prevent because of urine and the generation that just mixes the diaper rash that causes, uses so can be particularly suitable as skin fragility, skin allergy is more, infant is used disposable diaper.

Claims (6)

1. a disposable diaper possesses: absorber; To cover the upper strata thin slice that mode disposes, at least a portion is made of the liquid impermeable material above the above-mentioned absorber; And, dispose to cover mode below the above-mentioned absorber, by the bottom sheet that liquid impermeability material constitutes, it is characterized in that,

Also possess: be configured in the top of above-mentioned upper strata thin slice and be formed with make just be able to the peristome (just by using peristome) that passes through touch the skin thin slice; And, be configured in just separates walls of the above-mentioned urine that touches the space between skin thin slice and the above-mentioned upper strata thin slice and above-mentioned space is divided into predecessor's side and back body side,

Above-mentioned urine just separates walls is made of ventilative hydrophobicity thin slice, and,

By above-mentioned ventilative hydrophobicity thin slice, in the sheet surface of above-mentioned upper strata above-mentioned just by with under the peristome surface at least a portion be capped.

2. disposable diaper according to claim 1, it is characterized in that, when touching the skin thin slice and engage, the other end of above-mentioned ventilative hydrophobicity thin slice hangs down to the surface of above-mentioned upper strata thin slice to one end of above-mentioned ventilative hydrophobicity thin slice, thereby forms just separates walls of above-mentioned urine with above-mentioned.

3. disposable diaper according to claim 2 is characterized in that, the above-mentioned other end of above-mentioned ventilative hydrophobicity thin slice engages with above-mentioned upper strata thin slice.

4. according to claim 1 or 3 any one described disposable diaper, it is characterized in that, by above-mentioned ventilative hydrophobicity thin slice, in the sheet surface of above-mentioned upper strata above-mentioned just by with under the peristome surface 50 area % below be capped.

5. according to any one described disposable diaper of claim 1 to 3, it is characterized in that,

By above-mentioned ventilative hydrophobicity thin slice, above-mentioned in the sheet surface of above-mentioned upper strata just by being capped with surperficial integral body under the peristome.

6. according to any one described disposable diaper of claim 1 to 5, it is characterized in that,

Be formed with urine on the skin thin slice by using peristome above-mentioned touching,

Above-mentioned urine just separates walls be configured in above-mentioned just by with peristome and above-mentioned urine by with between the peristome, and with above-mentioned space be divided into above-mentioned just by the space that is communicated with peristome and with the space of above-mentioned urine by being communicated with peristome.

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