CN1947671A - Disposable diaper - Google Patents

Abstract

The present invention provides a disposable diaper in which a discharged stool does not easily directly contact with the skin of a wearer of the diaper. A disposable diaper (1) 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 (1) further includes a skin contact sheet (24) disposed above the top sheet (18) and formed with a stool passing opening (28), which is an opening capable of passing a stool therethrough, and to the both sides of the skin contact sheet (24) , at least a pair of standing gathers (26 a, 26 b) which are leakage prevention walls capable of three-dimensionally standing is formed.

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 be formed with can make the peristome that just passes through touch the skin thin slice.

Background technology

In recent years, the diaper as being used for infant or man at an advanced age people with disability generally uses disposable diaper, and it possesses: absorber; To cover the upper strata thin slice that mode disposes, at least a portion is made of liquid permeability material above the absorber; And, the bottom sheet that disposes to cover mode below the absorber, constitutes by liquid impermeability material.This disposable diaper contacts with wearer's skin and crooked the use by the surface of its upper strata thin slice, the excretory urine of wearer sees through the upper strata thin slice, when keeping, prevent that by the superior bottom sheet of anti-leakage Excreta from spilling to the outside of diaper by absorbent body.

But in the disposable diaper of said structure, urine sees through the upper strata thin slice, just sees through front end hardly, and remains on the thin slice of upper strata.Remain on the thin slice of upper strata just owing to,, except becoming the reason that increases give birth to children burden or nursing burden, also become wearers skin reason hypersensitive so need loaded down with trivial details wiping operation attached to wearer's hip crotch bottom and buttocks.This type of problem is in that the wearer is excretory when being soft stool, and is particularly evident.

So, proposed a kind of on the thin slice of upper strata 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: TOHKEMY 2002-11044 communique).

In above-mentioned disposable diaper, 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 upper strata have just, also can expect to be reduced significantly this just with the effect of the direct touch opportunity of wearer's skin.

But, possess the disposable diaper that touches the skin thin slice and compare with existing diaper, exist and to take place easily to enclose the problem that peristome etc. spills (so-called " transverse leakage ") from the lower limb of diaper.That is, on the transverse leakage this point that prevents to urinate, can not meet the demands fully, still leave an open question.

Summary of the invention

Like this, present situation is not disclose the excretory skin that just is difficult to directly contact the wearer, and can effectively prevent to urinate the disposable diaper of transverse leakage, and such diaper presses for.The present invention is for the problem that solves this type of prior art existence proposes, and a kind of excretory skin that just is difficult to directly contact the wearer is provided, and can effectively prevent to urinate the disposable diaper of transverse leakage.

Present inventors learn for the wholwe-hearted result who researches and develops of the problem that solves above-mentioned prior art existence: in possessing the disposable diaper that touches the skin thin slice, exist homaluria in situation about touching on the skin thin slice, this type of situation is touched the skin thin slice owing to urine passes to and is spread, and the transverse leakage of urine takes place easily.And, expect except possessing the skin of touching thin slice, solve above-mentioned problem by the three-dimensional rivel that on the both sides of touching the skin thin slice, forms at least one pair of, thereby finish the present invention.Specifically, can provide following disposable diaper according to the present invention.

1. a disposable diaper possesses: absorber; To cover the upper strata thin slice that mode disposes, at least a portion is made of liquid permeability material above the above-mentioned absorber; And, the bottom sheet that disposes to cover mode below the above-mentioned absorber, constitutes by liquid impermeability material, also possess the top that is configured in above-mentioned upper strata thin slice and be formed with can make the peristome that just passes through touch the skin thin slice, on above-mentioned both sides of touching the skin thin slice, form the three-dimensional rivel of the leakproof wall that a pair of conduct can three-dimensional erect at least.

2. such scheme 1 described disposable diaper, its above-mentioned three-dimensional rivel is formed by the above-mentioned fold back portion of touching skin thin slice lateral margin, and constitutes with the above-mentioned skin thin slice one of touching.

3. such scheme 1 or 2 described disposable diapers, its above-mentioned three-dimensional rivel touches the both side edges portion of skin thin slice and forms along above-mentioned.

4. such scheme 1～3 any described disposable diaper, above-mentioned three-dimensional rivel on it ora terminalis be configured in and be higher than on the above-mentioned position of touching the skin sheet surface.

5. such scheme 1～4 any described disposable diaper, above-mentioned three-dimensional rivel its down ora terminalis be configured in above-mentioned touching on the skin sheet surface.

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 cutaway view of an embodiment of expression disposable diaper of the present invention, is the cross section of disposable diaper shown in Figure 2 is blocked in expression along X-X ' line summary cutaway view.

Fig. 4 is the summary cutaway view of another embodiment of expression disposable diaper of the present invention, is to be illustrated in the summary cutaway view that just blocks disposable diaper of the present invention cross section by the parts transversely with peristome.

Fig. 5 is the summary cutaway view of other embodiment of expression disposable diaper of the present invention, is to be illustrated in the summary cutaway view that just blocks the cross section of disposable diaper of the present invention by the parts transversely with peristome.

Fig. 6 is the summary cutaway view of another other embodiment of expression disposable diaper of the present invention, is to be illustrated in the summary cutaway view that just blocks the cross section of disposable diaper of the present invention by the parts transversely with peristome.

Fig. 7 is the summary cutaway view of other embodiment of expression disposable diaper of the present invention, is to be illustrated in the summary cutaway view that just blocks disposable diaper of the present invention cross section by the parts transversely with peristome.

Among the figure:

1,60,70,80, the 90-disposable diaper, 2-predecessor, 2a, the 2b-side edge part, 4-hip crotch bottom, body district behind the 6-, 6a, the 6b-side edge part, the 8-junction surface, 10-waistline peristome, 12,12a, the 12b-lower limb encloses peristome, the 14-absorbent main body, 16-exterior member, 18-upper strata thin slice, the 20-bottom sheet, 22-absorber, 24-touch the skin thin slice, the 24a-upper foil, the 24b-liner sheet, 26,26a, the three-dimensional rivel of 26b-, the 28-peristome, 28a-is just by using peristome, 30-peristome telescopic material, 32,32a, the 32b-sheeting, the last ora terminalis of 34-, 36,36a, 36b, 36c, the three-dimensional rivel telescopic material of 36d-, 38,46-erects line, and the 40-lower limb encloses telescopic material, 42-waistline telescopic material, 44-abdominal circumference telescopic material, the P-point.

The specific embodiment

Below, the best mode that is used to implement disposable diaper of the present invention is described, be that example specifically describes with the two-piece type shorts type diaper.But the present invention extensively comprises possessing the disposable diaper that it invents specific item, is not limited to following embodiment.Have, relevant Fig. 3～Fig. 7 for the ease of mapping, ignores lower limb and encloses telescopic material and map from figure again.

In addition, when being called " shorts type diaper " in this description, be meant disposable diaper 1 as shown in Figures 1 and 2, by with predecessor 2 and back body 6 corresponding lateral edge portion ( lateral edge portion 2a, 6a mutually, lateral edge portion 2b, 6b) engage and form peristome 12a, 12b around junction surface 8, waistline peristome 10 and the pair of leg, thus constituted the diaper of pants type in advance.And, so-called " two-piece type " is meant that disposable diaper 1 as shown in Figures 1 and 2 is such, constitute by the absorbent main body 14 of bearing the excremental function (absorbing and the maintenance function) that absorbs and keep the wearer and the outer package member 16 of the function (wearing function) of bearing the health that coats the wearer, and dispose absorbent main body 14 such diapers in the inboard of outer package member 16.As shown in Figure 3, absorbent main body 14 is the parts that have absorber 22, upper strata thin slice 18 and bottom sheet 20 as structural element.

Have again, in this manual, when so-called " predecessor " is meant the user wears diaper, cover the part of wearer's abdominal part one side (health the place ahead); " hip crotch bottom " covers the part under wearer's hip crotch when being meant the user wears diaper; " back body " covers the part of wearer's back one side (health rear) when being meant the user wears diaper.

Below, the structure of disposable diaper of the present invention at first is described.

Disposable diaper of the present invention disposable diaper 1 as shown in Figure 1-Figure 3, it is disposable diaper with absorber 22, upper strata thin slice 18 and bottom sheet 20, also have the top that is configured in upper strata thin slice 18, be formed with can make the peristome (just by using peristome 28a) that just passes through touch skin thin slice 24, on the both sides of touching skin thin slice 24, form the three-dimensional rivel 26 (26a, 26b) of the leakproof wall that a pair of conduct can three-dimensional erect at least.

Below, at first the skin thin slice is touched in explanation.

Touching the skin thin slice is the member that is used to isolate wearer's skin and upper strata thin slice, is to be configured in thin slice top, upper strata, to be formed with the flat member that can make the peristome that just passes through (just by using peristome).Because having this skin thin slice that touches at first contacts wearer's skin with touching the skin thin slice, thereby, be configured in the upper strata thin slice that touches skin thin slice bottom and then be difficult to directly contact with wearer's skin.That is, wearer's skin and upper strata thin slice are isolated.In addition, between upper strata thin slice and wearer's skin, then touch the sealing coat of skin thin slice and so on across one deck.Therefore, even residual on the thin slice of upper strata have just, also can play the effect that this is just reduced significantly with chance that wearer's skin directly contacts.

Touch the material of skin thin slice as formation, can use the non-woven fabrics that for example constitutes, mesh sheet, thin film etc. by resins such as polyethylene, polypropylene, polyester.Wherein, from feeling better this point, preferably use non-woven fabrics with contact skin.These materials both can be liquid permeability materials, also can be liquid impermeability materials, can also be hydrophobic materials.But, can keep salubrious sense of touch (drying property) this point when wearing for a long time, preferred hydrophobic material (non-woven fabrics of hydrophobicity).

Need form on the skin thin slice touching of disposable diaper of the present invention and make the excretory peristome that just can pass through of wearer (just by using peristome).By adopting this structure, can make that the wearer is excretory just to fall on the thin slice of upper strata by touching the skin thin slice, thereby can reduce just the chance that directly contacts with wearer's skin significantly.

Peristome is so long as can make the shape of just passing through get final product, and relevant this shape is not done special restriction.Promptly, just " peristome " that pass through can be comprised: circular open portion, elliptical openings portion, all peristomes (hole) of diamond opening portion etc., in addition, also can comprise: linearity otch, cross otch, the star otch that the otch more than three is reported to the leadship after accomplishing a task.Wherein, preferably with the fore-and-aft direction (length direction) of diaper elliptical openings or star otch as long axis direction.The advantage of elliptical openings is to be convenient to by touching the peristome of skin thin slice, and the advantage of star otch is to prevent in case fall the buttocks that just exposes the wearer that makes dirty once more from the peristome that touches the skin thin slice on the thin slice of upper strata by the peristome that touches the skin thin slice.For example, disposable diaper 1 shown in Figure 2 be one on the part of the hip crotch bottom 4 of the diaper that is equivalent to touch skin thin slice 24, as just forming the fore-and-aft direction of diaper example as the elliptical openings portion of long axis direction by peristome 28a.Have, about the size of hole or otch, suitably decision gets final product after considering " can make just and pass through " function again.

Have again, touching on the skin thin slice also and can form urine by using opening apart from forward predecessor's one side of above-mentioned peristome.That is, touching on the skin thin slice, as peristome, be preferably formed just by with peristome and urine by using peristome.

By forming urine as described above by using peristome, can make the excretory urine of wearer flow into the inside of touching the skin thin slice reliably by this peristome, can prevent effectively that urine from passing to touches the skin thin slice and spreads, and produces the situation of enclosing transverse leakages such as peristome from the lower limb of diaper.For example, disposable diaper 1 as shown in the figure be one touch on the skin thin slice 24 not only be formed with as peristome 28 oval-shaped just by also being formed with oval-shaped urine with peristome 28a by example with peristome 28b.In this embodiment, just by on the part that is formed at the hip crotch bottom 4 that is equivalent to diaper with peristome 28a, urine is by being formed at peristome 28b than on the part of just passing through with forward predecessor's 2 sides of peristome 28a.

As mentioned above, under the situation that is formed with two peristomes (just by with peristome and urine by use peristome), preferably be provided with touch between skin thin slice and the upper strata thin slice spatial division for just by the space that is communicated with peristome and with the spatial partition wall of urinating by being communicated with peristome.

Existing report (Yamamoto one, skin clinical 30,949～956 pages (1998)) as follows: when urine can produce ammonia when just mixing, this ammonia makes environment become alkalescence, just the enzyme in is the reactivity grow in alkaline environment gas, because this enzyme and ammonia can cause that the more weak part of skin is inflamed, the diaper macule takes place.By being provided with above-mentioned partition wall, owing to can under the excretory urine of wearer and just isolating state, be absorbed maintenance, so urine and dyschezia to mix, can effectively prevent the diaper macule.

Preferably on above-mentioned peristome, dispose telescopic material (peristome telescopic material).When disposing the peristome telescopic material,, can bear Excreta so touch the skin thin slice because tension force is applied to and touches on the skin thin slice.Therefore, it is recessed and fall the situation of upper strata thin slice side to prevent to touch the skin thin slice, has to make and touches the advantage that the skin thin slice contacts wearer's skin easily.In addition, when disposing the peristome telescopic material, 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 keep the state that the skin thin slice floats on the upper strata thin slice that touches, can make and touch the skin thin slice and separate really with the upper strata thin slice.

As the peristome telescopic material, can be suitable for using employed telescopic material in conventional disposable diaper.Specifically, can enumerate wire rubber, flat rubber by the elastomeric material formation of natural rubber or synthetic rubber (polyurethane rubber etc.), in addition, retractility net, retractility thin film, retractility foam (polyurethane foam etc.) etc.

Though the configuration figure of peristome telescopic material so long as the figure that can bring into play above-mentioned effect all can, be not particularly limited, for peristome is acted on contractility reliably, preferably the peristome telescopic material is configured to surround peripheral such figure of peristome.For example, can be with circular, oval, rhombus figures configuration peristome telescopic material, so that it surrounds the periphery of peristome.

In addition, use two peristome telescopic materials, and the such figure of a part that these two peristome telescopic materials is configured to intersect and surrounds the peristome periphery at least 1 before and after the peristome also is one of optimal way as the peristome telescopic material.When disposing the peristome telescopic material with such figure, owing to can dispose the peristome telescopic material continuously to the fore-and-aft direction of diaper, thereby its bigger advantage is to make the continuous manufacturing of disposable diaper become easy.

For example, disposable diaper 1 shown in Figure 2 is exactly to use two peristome telescopic material 30a, 30b as peristome telescopic material 30, and be configured to make these two peristome telescopic material 30a, 30b stool by with peristome 28a and urine by intersecting with the some P between the peristome 28b, and surround stool by with peristome 28a and urine by example with the such figure of the part of the periphery of peristome 28b.When with such figure configuration peristome telescopic material 30a, 30b, can be manufactured on length direction at an easy rate and dispose the such absorbent main body continuum of absorbent main body 14 continuously.

In addition, disposable diaper 1 shown in Figure 2 is made peristome telescopic material 30a, the 30b central authorities in hip crotch bottom 4 and is disposed across.By adopting this configuration, can more lean near hip crotch 4 (that is, the some P) part to predecessor's 2 one sides of diaper or than back body 6 one sides, to the bigger contractility of width (diaper left and right directions) effect.Therefore the effect that has is, and is all loose than being easier in touching skin thin slice 24, and makes stool by more fitting tightly with wearer's skin by the part with peristome 28b with urine with peristome 28a.Have again, disposable diaper 1 shown in Figure 2 is configured to peristome telescopic material 30a, 30b and does not intersect beyond the some P of the central authorities of hip crotch bottom 4, stool by with the periphery of back body 6 one sides of peristome 28a and urine by the figure of periphery for opening wide with predecessor's 2 one sides of peristome 28b.By adopting such configuration, can exceedingly not fit tightly owing to touch predecessor's 2 one sides of skin thin slice 24 or back body 6 one sides and wearer's skin, thereby can guarantee its aeration.Therefore, the diaphoresis that causes because of the contact of touching the skin thin slice can be suppressed, the uncomfortable and skin lesion that causes because of antiperspirant can be prevented effectively.

Aforesaid peristome telescopic material utilizes binding 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, the bonding of other mobile high binding agent also can be the welding based on the utilization heat of heat seal or ultrasound wave etc.

The peristome telescopic material is owing to acting on peristome with competent contractility, so preferably fix under elongation state.For example, the peristome telescopic material is natural rubber or elastomeric situation, and is preferably fixing under 100～400% elongation state, preferably fixing under 200～300% elongation state.By fixing under the elongation state of this scope, can make competent contractility act on peristome, and prevent peristome narrow down to required more than.

Though the collocation method to the peristome telescopic material is not particularly limited, but preferred collocation method is: for example, disposable diaper 1 as shown in Figure 3, touch skin thin slice 24 by 2 sheet materials (upper foil 24a and liner sheet 24b) are pasted with formation, and peristome telescopic material 30a, 30b are clipped between upper foil 24a and the liner sheet 24b.When adopting this collocation method, owing to can utilize necessary minimal telescopic material to come to apply contractility to touching the skin thin slice, thereby comparatively desirable.

Have, even if adopt said structure, it is enough so long as constitute the part that disposes the peristome telescopic material by two sheet materials to touch the skin thin slice, need not constitute the whole skin thin slice that touches by two sheet materials again.For example, disposable diaper 90 shown in Figure 7 is parts that are made of configuration peristome telescopic material two sheet materials (upper foil 24a, liner sheet 24b), is the examples that are made of a slice sheet material (upper foil 24a) about other parts.

If adopt said structure, only constitute from the part that line 46 erects that erects of touching skin thin slice 24 by a slice sheet material (upper foil 24a), to compare with situation about constituting with two sheet materials, the part that self-support initial line 46 erects is soft and flexible.Therefore, touch the skin thin slice and erect easily, owing to can follow wearer's skin (hip crotch lower part) shape and be close to easily, thus can obtain good fit, and have and can give full play to the advantage of touching the original effect of skin thin slice.Disposable diaper 90 shown in Figure 7 is that liner sheet 24b is constituted narrower width, and constitute the example of three- dimensional rivel 26a, 26b by the upper foil 24a of the wider width of exposing from the narrower liner sheet 24b of this width, opposite with it, even if upper foil is constituted narrower width, and constitute three-dimensional rivel by the liner sheet of the wider width of exposing from the narrower upper foil of this width and also can obtain identical effect.

As the fixing means that touches the skin thin slice, can enumerate as follows: as (1) disposable diaper 1 as shown in Figure 3, 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), fixedly touch the method for skin thin slice 24 in the mode that sandwiches; (2) as the disposable diaper 60 as shown in Figure 4, the partial fixing between ora terminalis 34 on three-dimensional rivel 26a, the 26b on the medial surface that is positioned at three- dimensional rivel 26a, 26b and following ora terminalis (erecting line 38) touches the method for skin thin slice 24 etc.

In addition, also can contact, touch the skin thin slice by a pair of three-dimensional rivel area surrounded internal fixation with three-dimensional rivel.For example, can enumerate following method: as (3) disposable diaper 70 as shown in Figure 5, in the method for fixedly touching skin thin slice 24 by the adhesive portion of the upper strata thin slice 18 and the bottom sheet 20 of the absorbent main body 14 in three-dimensional rivel 26a, the 26b area surrounded (so-called safe edge portion); (4) as the disposable diaper 80 as shown in Figure 6, on the position on absorber 22 tops of the upper strata thin slice 18 that constitutes absorbent main body 14 by being equivalent in three-dimensional rivel 26a, the 26b area surrounded, fixedly touch the method for skin thin slice 24.

In addition, also can adopt method (5): as the disposable diaper 90 as shown in Figure 7, constitute the situation of absorbent main body 14 in the mode of exposing bottom sheet 20 with downside, on by the upper strata thin slice 18 of the absorbent main body 14 in three-dimensional rivel 26a, the 26b area surrounded and bottom sheet 20 both sides, fixedly touch the method for skin thin slice 24 from upper strata thin slice 18.In the method for above-mentioned (1)～(5), touch the skin thin slice with respect to being close on the effect this point of wearer's skin in raising, preferred (1) method.

The following describes three-dimensional rivel.

Three-dimensional rivel is the parts that are used to prevent the transverse leakage of the excretory urine of wearer, is can three-dimensional erect and the leakproof wall that constitutes.By constituting this solid rivel, even if homaluria is touching on the skin thin slice, urine passes to the situation of touching the skin thin slice and spreading, and three-dimensional rivel constitutes breakwater, can prevent effectively that also lower limb from diaper from enclosing spill (so-called " transverse leakage ") of peristome etc.

The formation of three-dimensional rivel can adopt conventional disposable diaper, the employed structure of other absorbent commodity.For example, can use following structure: on the part of sheeting, dispose telescopic material (three-dimensional rivel telescopic material), on sheeting, form rivel (folds in a garment) by this solid rivel telescopic material.

As the sheeting that constitutes three-dimensional rivel,, can use hydrophobic material from the viewpoint of the anti-leakage that improves three-dimensional rivel.Can use the non-woven fabrics of fiber combination or woven design embossing etc. as hydrophobic material, but, preferably 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. from the high reason of water pressure resistance.

Three-dimensional rivel can be by the absorbent main body of turning back upper strata thin slice or bottom sheet or touch the skin thin slice and form.For example, disposable diaper 90 shown in Figure 7 is one and turns back by the both side edges that will touch skin thin slice 24 and to form the example of a pair of three- dimensional rivel 26a, 26b, more specifically say, be that a three-dimensional rivel is formed by the above-mentioned fold back portion of touching very much skin thin slice lateral margin, and touch the example that skin thin slice one constitutes with above-mentioned, but, preferred three-dimensional rivel by with upper strata thin slice, bottom sheet, touch diverse other sheeting of skin thin slice and paste and form.For example, Fig. 2 and disposable diaper 1 shown in Figure 3 be one by will sticking on the both side edges of absorbent main body 14 with upper strata thin slice 18 or bottom sheet 20 diverse other sheeting 32a, 32b, thereby form the example of a pair of three- dimensional rivel 26a, 26b.

As three-dimensional rivel telescopic material, can use and the identical telescopic material of above-mentioned peristome telescopic material.The configurable three-dimensional rivel telescopic material of each three-dimensional rivel also can dispose a plurality of.For example, can be configured near the following ora terminalis (erecting line) of three-dimensional rivel or between the last ora terminalis of three-dimensional rivel and the following ora terminalis (erecting line) etc., also can be configured near the last ora terminalis of three-dimensional rivel.

For example, Fig. 2 and near 1 one examples that ora terminalis 34 on three-dimensional rivel 26a, the 26b, disposed three-dimensional rivel telescopic material 36 of disposable diaper shown in Figure 3, the end (end that is equivalent to last ora terminalis 34 sides of three- dimensional rivel 26a, 26b) of sheeting 32a, 32b of turning back sandwiches configuration two three-dimensional rivel telescopic material 36a, 36b or three-dimensional rivel telescopic material 36c, 36d in this fold back portion.

The height of three-dimensional rivel (from the lower end to the length of upper end) is preferably 5～80mm, preferred 10～40mm.By adopting more than 5mm, not only can guarantee sufficient leak preventing effect, but also can prevent that three-dimensional rivel from covering the unfavorable condition of touching the surface of skin thin slice or upper strata thin slice and hindering assimilation effect.

As the kind of three-dimensional rivel, can enumerate as follows: the introversion rivel that topple over to the diaper inboard (1); (2) the flare rivel of toppling over to the diaper outside; (3) on the part of short transverse, formed the three-dimensional rivel (C folding shape rivel or Z folding shape rivel) etc. of bending section or reflex part.In the middle of them, for the high this point of anti-leakage, preferred introversion rivel.For example, Fig. 2 and disposable diaper 1 shown in Figure 3 are the examples that three- dimensional rivel 26a, 26b is made the introversion rivel.

Three-dimensional rivel from preventing to urinate the purpose of transverse leakage, preferably is formed at the structure of the both sides of touching the skin thin slice, wherein, preferably forms along the both side edges portion that touches the skin thin slice.So, even if homaluria uploads to the situation of touching the skin thin slice and spreading touching the skin thin slice, three-dimensional rivel plays the function as breakwater really, can effectively prevent to enclose from lower limb the transverse leakage of peristome.

For example, the situation of Fig. 2 and disposable diaper 1 shown in Figure 3, be to touch the both side edges portion that skin thin slice 24 is configured to absorbent main body 14 always, and three- dimensional rivel 26a, 26b are touched the both side edges of skin thin slice 24 along this, be i.e. the both side edges of absorbent main body 14 and the example that forms.Have again, Fig. 2 and disposable diaper 1 shown in Figure 3 are the examples that runs through the whole zone formation of both side edges three-dimensional rivel 26a, the 26b of absorbent main body 14, from the purpose of the transverse leakage that prevents to urinate, be configured at least on the part of the hip crotch bottom that is equivalent to diaper and get final product.

Have again, disposable diaper 90 as shown in Figure 7 is such, touch under the situation of skin thin slice 24 and three- dimensional rivel 26a, 26b in the one formation, also play identical effect along two that touch skin thin slice 24 structures that erect line 46 formation three- dimensional rivel 26a, 26b, be also contained in the scope of the present invention with the structure of " forming three-dimensional rivel " along the both side edges portion that touches the skin thin slice.It is that this erects line by last upper portion that the part that the skin thin slice plays a role is touched in original conduct, and this is because under the situation of touching skin thin slice and three-dimensional rivel one formation, touches the lateral margin that line can think to touch the skin thin slice that erects of skin thin slice.That is, the structure of this type of mode, even homaluria uploads to the situation of touching the skin thin slice and spreading touching the skin thin slice, three-dimensional rivel also plays the effect as breakwater conscientiously, performance effectively prevents to enclose from lower limb the effect of the transverse leakage of peristome.

Three-dimensional rivel is preferably made on it ora terminalis and is configured in and is higher than on the position of touching the skin sheet surface.So, touching the skin thin slice at homaluria and uploading under the situation of touching the skin thin slice and spreading, can prevent that this urine from crossing three-dimensional rivel and draining to the outside.

Be configured in as the last ora terminalis with three-dimensional rivel and be higher than the locational method of touching the skin sheet surface, the following ora terminalis that can enumerate three-dimensional rivel is configured in the method for touching on the skin sheet surface.That is, in disposable diaper of the present invention, its following ora terminalis of preferred three-dimensional rivel is configured on the surface of touching the skin thin slice.So, the last ora terminalis of three-dimensional rivel is configured in reliably and is higher than on the position of touching the skin sheet surface.At this moment, correspondence is touched the apparent height of skin thin slice, and suitably adjusts the height of three-dimensional rivel, thereby can more reliably prevent to urinate the situation of crossing three-dimensional rivel and draining to the outside.

For example, disposable diaper 1 shown in Figure 3 be one by touching on the adhesive portion that skin thin slice 24 sandwiched and be fixed on three- dimensional rivel 26a, 26b and upper strata thin slice 18, thereby the following ora terminalis of three- dimensional rivel 26a, 26b is configured in the surface of touching skin thin slice 24, the last ora terminalis 34 of three- dimensional rivel 26a, 26b is configured in is higher than the locational example that touches skin thin slice 24 surfaces.Have, in this manual, " the following ora terminalis of three-dimensional rivel " is meant as shown in Figure 3 again, and the stiff end of three- dimensional rivel 26a, 26b promptly erects the part of line 38.

Have again, disposable diaper 90 for example shown in Figure 7 is such, the method of touching the lateral margin of skin thin slice 24 and forming three- dimensional rivel 26a, 26b of turning back also plays identical effect with above-mentioned " the following ora terminalis of three-dimensional rivel is configured in the lip-deep method of touching the skin thin slice ", within the scope of the present invention.Disposable diaper 90 as shown in Figure 7 is such, and one constitutes the situation of touching skin thin slice 24 and three- dimensional rivel 26a, 26b, is because can think the following ora terminalis (erecting line 38) and the surperficial formation continuously of touching skin thin slice 24 of three-dimensional rivel 26a, 26b.That is, the structure of this type of mode can suitably be adjusted the height of three-dimensional rivel by the apparent height that correspondence is touched the skin thin slice, thereby can more reliably prevent to urinate crosses three-dimensional rivel and drain to outside situation.

Have again, in disposable diaper of the present invention,, also can form more than two pairs though need to form at least one pair of three-dimensional rivel.

The following describes absorber.

Absorber is the member that absorbs and keep wearer's urine.Because absorber need absorb and keep wearer's urine and body fluid, thereby constitutes with 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 sheet material etc.As discongesting paper pulp, preferably use wood pulp and non-wood pulp are discongested material as the cotton fiber shape; Preferably use sodium polyacrylate as SAP, preferably use fabric, absorption paper, carried out the non-woven fabrics of hydrophilic treated as the hydrophilic sheet material.

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 the 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.

The absorber preferred group is dressed up 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 to be configured to coat the sheet material that (when putting on diaper, is positioned at the face of wearer's skin one side) above the absorber.According to the needs of the urine that absorbs the wearer, at least a portion (all or part of) on the absorber of upper strata thin slice side below being disposed at it is made of liquid permeability material.

As the liquid permeability material that constitutes the upper strata thin slice, can enumerate for example woven, non-woven fabrics, porous film etc.Wherein, the preferred non-woven fabrics that constitutes by thermoplastic resins such as polypropylene, polyethylene, polyester, nylon that uses through hydrophilic treated.

Though the upper strata thin slice can be made of single sheet of material, also can constitute by many sheet materials.For example, in tape-type diaper described later, often utilize middle body to dispose the upper strata thin slice (central sheet) that constitutes by liquid permeability material, partly dispose the mode of the upper strata thin slice (side thin slice) that constitutes by hydrophobic material at the side safe edge of diaper at diaper.

Then, bottom sheet is described.

Bottom sheet is the thin slice that is configured to coat below the absorber (when putting on diaper, being positioned at the face of clothes one side that the wearer wears).The bottom sheet basis prevents that wearer's urine from leaking into the needs outside the diaper, is made of liquid impermeability material.

As the liquid impermeability material that constitutes bottom sheet, can enumerate the liquid impermeability thin film that for example constitutes etc. by resins such as polyethylene, wherein, preferably use little porous polyethylene film.This little porous polyethylene film has formed many 0.1 μ m-and has counted the micropore of μ m, though be liquid impermeability material, owing to have poisture-penetrability, thereby, have the advantage of the evaporation that can prevent diaper inside.

In addition, on bottom sheet, can also paste sheet material (cover plate) in its outer surface one side.This cover plate can be used to strengthen bottom sheet, and makes bottom sheet have good hand feeling (sense of touch).

As the material that constitutes cover plate, can enumerate for example woven, non-woven fabrics etc.Wherein, the preferred dry type non-woven fabrics that constitutes by thermoplastic resins such as polyethylene, polypropylene, polyester, the Wet-laid non-woven fabric etc. of using.

Below, absorbent main body is described.

In the shorts type diaper of two-piece type, upper strata thin slice, bottom sheet and absorber are absorbed and keep function and parts being called as " absorbent main body " constitute as bearing, constitute disposable diaper by it and the external packing component made are in addition engaged again.This absorbent main body and sanitary napkin are that a side disposes the upper strata thin slice on absorber equally, and a side disposes bottom sheet below, make the structure that absorber is assembled between upper strata thin slice and bottom sheet.For example, disposable diaper 1 shown in Figure 3 is by absorber 22 being clipped between upper strata thin slice 18 and the bottom sheet 20, and the peripheral part of sealing absorber 22, constitute example with the absorbent main body 14 of the structure of absorber 22 between upper strata thin slice 18 and bottom sheet 20.

The size of absorbent main body is made at least and can be made diaper cover hip crotch bottom.But in order to make prevent to leak reliable for effect, its size is preferably made and can not only covers hip crotch bottom, can also cover the part of predecessor and back body.Absorbent main body for example can use hot-melt adhesive etc. that external packing component is fixed.

Below, external packing component is described.

External packing component be used to coat the wearer health bear the parts that wear function, specifically, be the sheet component that forms each several parts such as predecessor, hip crotch bottom and back body.

For the shorts type diaper of two-piece type, for the excremental absorption and the maintenance function that absorb and keep the wearer, owing to have special absorbent main body to realize, thereby, material as constituting external packing component there is no need to use liquid impermeability material.As the material that constitutes external packing component, 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 external packing component often to be made the non-woven fabrics more than two is pasted the structure that forms in order being fixed to sandwich the state that lower limb encloses telescopic material.For example, Fig. 1-disposable diaper 1 shown in Figure 3 constitutes external packing component 16 by two non-woven fabrics exactly, and lower limb is enclosed telescopic material 40, waistline telescopic material 42 and abdominal circumference telescopic material 44 is clipped between these two non-woven fabrics and gives fixed example.

Below, various telescopic materials are described.

In Breeches type disposable diaper, dispose lower limb usually and enclose telescopic material and waistline telescopic material, and then preferably also dispose the abdominal circumference telescopic material.

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 (lower limb rivel) that is imbued with retractility.Therefore, enclose at lower limb and to be difficult to form the gap, can prevent effectively that enclosing peristome from lower limb leaks urine.

The waistline telescopic material is the telescopic material along the configuration of waistline peristome.By configuration waistline telescopic material, can form the rivel (waist rivel) that is imbued with retractility at the waistline peristome.Owing to this waist rivel is difficult to form the gap at waistline,, prevent that diaper is toward gliding except preventing from waistline leaks urine, can also to make diaper and wearer's fitness good.

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 telescopic material, can form the nominal rivel that is imbued with retractility at wearer's abdominal circumference.This nominal rivel combines with the waist rivel, can further make the fitness of diaper and prevent the past effect optimization that glides.

In addition, the disposable diaper 1 of Figure 1 and Figure 2, be lower limb enclose peristome 12a, 12b around disposed many lower limbs and enclosed telescopic material 40, many the waistline telescopic materials 42 that surround waistline peristome 10 around waistline peristome 10, have been disposed, and then enclose the example that part (that is the part that, is equivalent to wearer's abdominal circumference) between peristome 12a, the 12b has disposed the abdominal circumference telescopic material 44 of many abdominal circumferences that surround wearers at waistline peristome 10 and lower limb.

For these telescopic materials, can adopt and the identical structure of having narrated of peristome telescopic material.And the shrinkage degree by considering rivel etc. can determine the material that constitutes, and Gu the percentage elongation of this material is periodic elongation state etc.

Secondly, the manufacture method of disposable diaper of the present invention is described.

Below, an example of the method for disposable diaper of the present invention is made in the example explanation the during disposable diaper 1 shown in Figure 3 according to shop drawings 1-(shorts type diaper of two-piece type).

The manufacturing of absorbent main body at first, 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, being absorbed property of the peripheral part main body 14 of clamping absorber 22 with upper strata thin slice 18 and bottom sheet 20 by sealing.

Secondly, the manufacturing of touching the skin thin slice is described.

On liner sheet 24b, dispose two peristome telescopic material 30a, 30b, and paste upper foil 24a by predetermined figure.At this moment two peristome telescopic material 30a, 30b are configured to just pass through to use peristome 28a and urine to pass through the intersection with the some P between the peristome 28b formed afterwards, and encirclement is just by using peristome 28a and urinating the such figure of a part that passes through with the periphery of peristome 28b.

Subsequently, on liner sheet 24b that is pasted and upper foil 24a, form just by passing through to use peristome 28b with peristome 28a and urine.So, can obtain being configured to two peristome telescopic material 30a, 30b just by with peristome 28a and urine by intersecting with the some P between the peristome 28b, and surround just by with peristome 28a with urinate by the double-deck skin thin slice 24 that touches with the such figure of the part of the periphery of peristome 28b.

Secondly, the manufacturing of three-dimensional rivel is described again.

By being turned back in the end of sheet material 32a (32b), and paste, thereby obtain three-dimensional rivel 26a (26b) with the state that two three-dimensional rivel telescopic material 36a, 36b (36c, 36d) is clamped in this part of turning back.

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

To touch after skin thin slice 24 sticks on the surface of the upper strata thin slice 18 that constitutes absorbent main body 14, paste three- dimensional rivel 26a, 26b in the mode of clamping absorbent main body 14 and touching the side of skin thin slice 24.

The manufacturing of external packing component then, is described.

At first, prepare two non-woven fabrics as external packing component 16, top configuration waistline telescopic material 42, abdominal circumference telescopic material 44 and the lower limb of a slice non-woven fabrics therein encloses telescopic material 40 and bonding is fixing.And,, thereby obtain waistline telescopic material 42, abdominal circumference telescopic material 44 and lower limb are enclosed the external packing component 16 that telescopic material 40 assembles between two non-woven fabrics by another sheet nonwoven sheet of lamination is also fixing more in the above.

The manufacturing of disposable diaper is described at last.

Configuration and attaching absorbent main body 14 near the hip crotch bottom of external packing component 16.Subsequently, by being the inboard, it is lumped together predecessor 2 and back body 6 doublings, utilize method such as heat seal that predecessor 2 and back body 6 are engaged forming junction surface 8, thereby can make the disposable diaper 1 of Fig. 1-Fig. 3 with absorbent main body 14.

Aforesaid series of processes can utilize machinery to carry out continuously.For example, from roller, send method and apparatus such as long sheet material and telescopic material continuously, then make disposable diaper serially, help the raising of productivity ratio by adopting.

Below, application of the present invention is described.

The application of disposable diaper of the present invention is not limited to the shorts type diaper of above-mentioned two-piece type, also goes for the shorts type diaper or the tape-type diaper of one chip.That is, in these disposable diapers, also can form a pair of three-dimensional rivel at least, also can obtain the effect of disposable diaper of the present invention by touching the skin thin slice in the configuration of the upper surface of upper strata thin slice.

In addition, so-called " one chip " is meant: though same with two-piece type, have upper strata thin slice, bottom sheet and 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, so-called " tape-type diaper " is meant: have upper strata thin slice, bottom sheet, be assembled into the absorber of at least a portion between two and wear 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 well utilize as the diaper of infant with adult's usefulness such as man at an advanced age who maybe needs to nurse or people with disabilitys.And, disposable diaper of the present invention since excretory dyschezia directly contacting with wearer's skin, thereby, can be specially adapted to skin a little less than, the disposable diaper used of the infant more than the skin lesion.

Claims (9)

1. a disposable diaper possesses: absorber; To cover the upper strata thin slice that mode disposes, at least a portion is made of liquid permeability 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 the top that is configured in above-mentioned upper strata thin slice and be formed with make the peristome (just by using peristome) that just passes through touch the skin thin slice, on above-mentioned both sides of touching the skin thin slice, form the three-dimensional rivel of the leakproof wall that a pair of conduct can three-dimensional erect at least.

2. disposable diaper according to claim 1 is characterized in that,

Above-mentioned three-dimensional rivel is formed by the above-mentioned fold back portion of touching skin thin slice lateral margin, and constitutes with the above-mentioned skin thin slice one of touching.

3. disposable diaper according to claim 1 and 2 is characterized in that,

Above-mentioned three-dimensional rivel touches the both side edges portion of skin thin slice and forms along above-mentioned.

4. disposable diaper according to claim 1 and 2 is characterized in that,

Above-mentioned three-dimensional rivel is made ora terminalis on it and is configured in and is higher than on the above-mentioned position of touching the skin sheet surface.

5. disposable diaper according to claim 3 is characterized in that,

Above-mentioned three-dimensional rivel is made ora terminalis on it and is configured in and is higher than on the above-mentioned position of touching the skin sheet surface.

6. disposable diaper according to claim 1 is characterized in that,

Its following ora terminalis of above-mentioned three-dimensional rivel is configured in above-mentioned touching on the skin sheet surface.

7. disposable diaper according to claim 3 is characterized in that,

Its following ora terminalis of above-mentioned three-dimensional rivel is configured in above-mentioned touching on the skin sheet surface.

8. disposable diaper according to claim 4 is characterized in that,

Its following ora terminalis of above-mentioned three-dimensional rivel is configured in above-mentioned touching on the skin sheet surface.

9. disposable diaper according to claim 5 is characterized in that,

Its following ora terminalis of above-mentioned three-dimensional rivel is configured in above-mentioned touching on the skin sheet surface.

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