JP3856904B2 - Disposable paper diapers - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a disposable paper diaper, for example, a disposable paper diaper to be mounted using a pants type such as so-called training pants or a binding tape.
[0002]
[Prior art]
Disposable disposable diapers, especially training pants, are used to promote separation of disposable diapers during the transition from infants to infants.
[0003]
Various proposals have been made on this type of pants-type paper diaper or on a paper diaper using a binding tape.
[0004]
In any disposable diaper, preventing leakage of body fluids from around the waist is a necessary characteristic of the product, and in recent years, forming side barrier cuffs is a general-purpose technology to prevent side leakage of loose stool. It is said that.
[0005]
In many products currently on the market, there is one side barrier cuff on each side, but in Japanese Patent Application Laid-Open No. 63-21901 and Utility Model Registration No. 2523726, there are two side parts on each side. It has been proposed to provide a barrier cuff.
[0006]
On the other hand, in addition to the above-mentioned lateral leakage, in particular for the longitudinal leakage that occurs when the wearer is sleeping, a device having an end barrier cuff is proposed as described in JP-A-3-136653. Yes.
[0007]
[Problems to be solved by the invention]
However, even if the end barrier cuff described in JP-A-3-136653 is provided for front and back leakage, the end barrier cuff is warped or separated from the wearer's skin. There was a limit to trying to completely prevent back-and-forth leakage with only the waistband.
[0008]
Further, it has been found that even if two side barrier cuffs are provided on each side, the side leakage cuff is more effective than the case where one barrier cuff is formed, but the effect is not necessarily remarkable.
[0009]
Therefore, the subject of this invention is providing the paper diaper which the effect of preventing back-and-front leakage appears notably.
[0010]
[Means for Solving the Problems]
The invention according to claim 1 of the present invention that has solved the above-mentioned problems is characterized in that side barrier cuffs are provided on both sides of the use surface side of the product body having an absorbent body between the liquid-permeable top sheet and the liquid-impermeable back sheet. In the disposable diaper
(1) A second portion having an elastic stretchable member in the vicinity of the tip, and a free portion standing on the wearer side at the time of wearing by a contraction force of the elastic stretchable member, with a standing line formed by a fixing region formed by a hot-melt adhesive . With barrier cuffs,
An elastic expansion / contraction member is provided in the vicinity of the tip, and when the free part is mounted due to the contraction force of the elastic expansion / contraction member with a standing line formed by a fixing region by a hot melt adhesive on the center side in the product width direction from the second barrier cuff A first barrier cuff standing on the wearer side in
(2) At least one end portion before and after the product is provided with an end barrier cuff having an edge side fixing portion and a center side portion on the use surface side of the product body,
A longitudinal end corresponding to the free portion of each first barrier cuff is fixed on the liquid-permeable top sheet by a hot melt adhesive,
The edge side fixing portion of the end barrier cuff is fixed by a hot melt adhesive on the liquid-permeable top sheet and on a longitudinal end corresponding to the free portion of each first barrier cuff,
A longitudinal end corresponding to a free portion of each of the second barrier cuffs is fixed on the edge side fixing portion of the end barrier cuff by a hot melt adhesive,
The end barrier cuff is provided with an elastic stretch member along the width direction of the product at the center side portion, and the center side portion of the end barrier cuff is not fixed to each first barrier cuff and The second barrier cuff is fixed to the lower surface of the free part, and is not fixed to the liquid-permeable top sheet, and is an unfixed part. At the time of mounting, the elastic elastic member contracts along the width direction. The non-fixed portion is configured to be separated from the liquid-permeable top sheet.
It is a disposable paper diaper characterized by this.
[0011]
The invention according to claim 2 is a disposable paper diaper according to claim 1 , wherein a waist elastic elastic member is provided on the edge side fixing portion of the waist sheet member constituting the end barrier cuff, and the waist is tightened around the waist. It is.
[0012]
A third aspect of the present invention is the disposable paper diaper according to the first aspect, wherein a waist band for tightening around the waist is provided separately from the waist seat member constituting the end barrier cuff .
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described in more detail with reference to embodiments shown in the drawings.
(First Reference Embodiment )
1 to 6 show a first reference embodiment of a disposable paper diaper to be mounted using a binding tape. As shown in FIGS. 1 and 2, the overall structure is a transparent sheet made of nonwoven fabric or the like. It has a structure in which the absorbent body 3 is wrapped by a liquid top sheet 1 and a liquid-impermeable back sheet 2 that defines the overall shape over the entire outer surface of the final product made of a polyethylene sheet or the like.
[0014]
The side part of the liquid-permeable top sheet 1 is fixed to the liquid-impermeable back sheet 2 with a hot melt adhesive or the like at a portion where the absorber 3 does not exist.
[0015]
Furthermore, the first barrier cuff 10 and the second barrier cuff 20 are fixed to the liquid-permeable top sheet 1, in other words, the liquid-impervious back sheet 2 through the center side in the product width direction. Has been.
[0016]
The first and second barrier cuffs 10 and 20 constituting the side barrier cuffs preferably include the first and second barrier sheets 11 and 21 exhibiting liquid impermeability or water repellency. The upright line of the first barrier sheet 11 is at the side edge of the absorbent body 3, and the upright line of the second barrier sheet 21 is easily outside the side edge of the absorbent body 3 (that is, the absorbent body 3 does not exist). Each of the outer regions (hereinafter referred to as the width direction unless otherwise specified) is fixed to the liquid-impermeable back sheet 2 by a hot melt adhesive or the like.
[0017]
Further, the first and second barrier sheets 11 and 21 are hot-melted when the elastic elastic members 12 and 22 for side barrier cuffs made of rubber thread or the like are stretched so that the inner portions thereof stand on the wearer side. It is fixed by an adhesive or the like, and the inner part is erected as a free part (standing part) in a worn state. The first and second barrier sheets 11 and 21 reach the front and rear ends of the product, but the elastic elastic members 12 and 22 for the barrier cuff occupy at least the crotch portion (may reach the front and rear ends of the product). ). As can be seen from this example, the first and second barrier cuffs 10, 20 need only be along the longitudinal direction at least in the region corresponding to the crotch portion in order to prevent side leakage.
[0018]
On the other hand, as shown in detail in FIG. 2, between the liquid-impervious backsheet 2 and the second barrier sheet 21, an elastic elastic member 6 for gasket cuffs is shown in FIG. In order to soften the contact with each other, a plurality, specifically four, of them are spaced apart in the width direction and fixed to one or both of them with a hot-melt adhesive or the like.
[0019]
The first barrier sheet 11 has an outer portion extending from the side edge of the absorbent body 3 to the vicinity of the gasket cuff elastic elastic member 6A, which is located closest to the center in the product width direction of the gasket cuff elastic elastic members 6, 6. And fixed to the liquid-permeable top sheet 1 and the liquid-impermeable back sheet 2 with a hot melt adhesive or the like. The second barrier sheet 21 partially covers the outer edge portion of the first barrier sheet 11, and is fixed by a hot melt adhesive or the like at the covering portion, and the fixed boundary line is an upright line of the second barrier cuff 20. The position of the upright line is set in the vicinity of the elastic expansion / contraction member 6A for gasket cuff located on the center side in the product width direction. Preferably, the position is within 10 mm on the left and right of the gasket cuff elastic elastic member 6A.
[0020]
On the other hand, a waist band portion for tightening around the waist is provided at at least one end portion before and after the product, and an end barrier cuff 50 is provided on the use surface side.
[0021]
In the illustrated example, an end barrier cuff 50 is provided on the back side where the coupling tape 70 is provided in advance.
[0022]
The end barrier cuff 50 has a barrier sheet 51, and the center side of the product is not fixed to the liquid-permeable top sheet 1, and the elastic elastic member 52 for standing along the width direction of the product in this non-fixed portion. And the non-fixed portion is configured to be separated from the liquid-permeable top sheet 1 by contraction of the elastic elastic member 52 for use in use, and the end edge side of the end barrier cuff 50 is The body fluid is integrated into the body of the product (in the illustrated example, as shown in FIG. 3, the liquid-permeable top sheet 1, the liquid-impervious back sheet 2, and the flap portion integrated by the hot melt adhesive). In this way, leakage in the front-rear direction is prevented .
[0023]
Here, in the illustrated example, as particularly shown in FIG. 3 and FIG. 4, the barrier sheet 51 is two sheets showing liquid impermeability or water repellency, and between these two sheets 51, 51. Along with the elastic elastic member 52 for standing, the elastic elastic member 53 for fastening is interposed in an extended state, and is prepared in advance as a waist sheet member integrated with a hot melt adhesive at an appropriate position or the entire surface, This is fixed to the main body of the product by a hot melt adhesive or the like in the manufacturing process. Therefore, the elastic elastic member 53 for waist constitutes a waist band portion together with the barrier sheets 51 and 51.
[0024]
The waist sheet member is fixed as shown by the hatched lines in FIG. That is, in the manufacturing process, the end barrier cuff 50 is fixed to the liquid-permeable top sheet 1 with a hot melt adhesive or the like in the region indicated by reference numeral Z1, and the first barrier cuff 50 is placed on the fixed end cuff 50 from above. The cuff 10 is fixed by a hot melt adhesive in the region indicated by Z2, and the inner part of the second barrier cuff 20 is fixed by a hot melt adhesive in the region indicated by Z3 from above.
[0025]
Therefore, in the lumbar sheet member, the portions excluding the symbols Z1 and Z2 in FIG. 6 (portions where hatched lines are not drawn) are the above-described non-fixed portions. However, the waist sheet member (or the barrier sheet 51 integrated with the elastic elastic members 52 and 53: the end barrier cuff 50) is fixed to the liquid-permeable top sheet 1 and the first barrier cuff 10. Therefore, when the product is worn, the body fluid has moved as shown by the arrow in the figure in a state of being separated from the liquid-permeable top sheet 1 as shown in FIG. 5 due to the contraction of the elastic elastic member 52 for standing. The end barrier cuff 50 functions as a body fluid barrier.
[0026]
On the other hand, on the abdomen side of the product, as shown in FIG. 1, an abdomen waist band 60 is attached. The abdomen waist band 60 has elastic elastic members 62, 62 for tightening interposed between two liquid-impervious or water-repellent sheets 61, 61 each having a narrow width in the front-rear direction, and hot melt bonding. The entire surface is fixed to the liquid-permeable top sheet 1 and the first barrier cuff 10 by a hot melt adhesive in the same manner as the waist sheet member. Therefore, the abdomen does not have a function as a barrier cuff. However, it will be appreciated that a barrier cuff similar to the back side can be constructed on the ventral side of the product (this embodiment is not shown).
[0027]
The paper diaper having such a configuration is to be fixed by pulling out the connecting tapes 70 and 70 to the stomach side after being attached to the wearer. The paper diaper having the above-described configuration excluding the coupling tapes 70 and 70 can be used as a pants type as it is. In this case, the paper diaper is folded back and forth with respect to the horizontal center line in FIG. It is commercialized by being fixed with a seal.
[0028]
In any case, as shown in the lower part of FIG. 2, the free portions of the first barrier cuff 10 and the second barrier cuff 20 are raised by the contracting force of the barrier cuff elastic elastic members 12 and 22, respectively. . Further, since the contraction force of the gasket cuff elastic elastic members 6, 6... (Including 6A) acts, the left side portion of the gasket cuff elastic elastic member 6A does not have the absorber 3, and the easily deformable region. Since it comprises, it comes to be lifted by the wearer side so that it may adhere more closely to a wearer's skin.
[0029]
As a result, even if the lengths of the free portions of the first barrier cuff 10 and the second barrier cuff 20 are the same, as shown in the lower part of FIG. 6A (including 6A), the free portion of the second barrier cuff 20 becomes more upright, and the standing height h2 of the standing edge from the liquid-permeable topsheet 1 is higher than that of the first barrier cuff 10. It becomes higher than the height h1.
[0030]
<Effects of side structure>
In the aspect showing such a side part structure, the following advantages are brought about.
(1) Since there is the second barrier cuff 20 in addition to the first barrier cuff 10, the body fluid (including soft stool) that cannot be blocked by the first barrier cuff 10 can be blocked by the second barrier cuff 20.
[0031]
(2) Since the free portion of the second barrier cuff 20 stands up more largely due to the contraction force of the elastic expansion / contraction members 6, 6... (Including 6 A) for the gasket cuff, for example, when h 2> h 1 in FIG. The function of blocking body fluid (including loose stool) that could not be blocked by the first barrier cuff 10 by the second barrier cuff 20 appears more remarkably.
[0032]
(3) Since the free portion of the second barrier cuff 20 stands in a more vertical (reference to FIG. 2) direction, the space or space between the free portion of the first barrier cuff 10 and the free portion of the second barrier cuff 20 is (deployed). It becomes larger than the state) and cannot be blocked by the first barrier cuff 10, and the body fluid exceeding this can be held between them, and the function of blocking by the second barrier cuff 20 is remarkably exhibited.
[0033]
(4) As a result of the above (2) and (3), even if the contraction force of the elastic expansion member 22 for the barrier cuff of the second barrier cuff 20 is weakened, it can be released from excessive pressure on the wearer.
[0034]
(5) The elastic elastic members 6, 6... For gasket cuffs (including 6A) enhance the standing effect of the second barrier cuff 20 and, by themselves, fit the wearer around the leg of the product. Even if the body fluid exceeds the second barrier cuff 20, it can be blocked there, and when the second barrier cuff 20 is moistened with the liquid, further outward wetting is prevented and the moisture resistance is improved.
[0035]
In addition, since the contraction force action region of the elastic expansion / contraction members 6, 6. The outer barrier cuff does not stick out and does not stick out, and always stands up inward, so that the function of the original barrier cuff is satisfactorily exhibited.
[0036]
(6) By adding the elastic elastic members 6, 6... For gasket cuffs, the above functions are fully exhibited, so the width of the free part of the second barrier cuff 20 is larger than the free part of the first barrier cuff 10. The direction can be reduced, and the cost is hardly increased. In addition, the cost is extremely excellent in terms of the balance with the entire function. Specifically, when the free portion of the first barrier cuff 10 is 30 to 50 mm, the easily deformable region between the rising line of the first barrier cuff 10 and the rising line of the second barrier cuff 20 is the second barrier cuff. The free part of the second barrier cuff 20 can be made 20 to 40 mm smaller than the free part of the first barrier cuff 10 because it is interlocked with the free part of 20.
[0037]
(7) By separating the rising line of the first barrier cuff 10 and the rising line of the second barrier cuff 20 from each other, the first barrier cuff 10 and the second barrier cuff 10 and the second barrier cuff 10 are contracted by the contraction force of the elastic expansion members 6, 6. A pocket (space between free portions of each barrier cuff) is formed between the two barrier cuffs 20 and the second barrier cuff 20 has a function of blocking body fluids (including soft stools) that could not be blocked by the first barrier cuffs 10. It appears prominently. Specifically, it is desirable that the upright line of the first barrier cuff 10 and the upright line of the second barrier cuff 20 are separated by 10 to 40 mm.
[0038]
<Effects of end barrier cuffs>
According to the embodiment described above, the following operational effects are obtained.
(A) A waist band portion for tightening around the waist is provided at at least one end portion before and after the product , and an end barrier cuff 50 is preferably provided at least on the use surface side on the back side. Moreover, since the end barrier cuff 50 is provided with the elastic elastic member 52 for standing along the width direction of the product in the non-fixed portion, the contraction force of the elastic elastic member 52 for standing is used when the product is used. As a result, the non-fixed portion contracts and is reliably separated from the liquid-permeable top sheet 1. That is, the non-fixed portion does not warp due to the contraction force of the standing elastic elastic member 52 (conventional example), and the body fluid is sufficiently brought into contact with the wearer's skin, so that the body fluid barrier function is sufficiently exhibited.
[0039]
(A) In the case of forming the end barrier cuffs 50, it may be possible to form them separately from the waist band. However, if these are separate, in general, positioning them in the manufacturing process becomes complicated, And the product looks bad. However, a waist elastic elastic member 53 for tightening together with an elastic elastic member 52 for standing with respect to the barrier sheet 51 in an extended state, and integrated with a hot melt adhesive at an appropriate position or the entire surface. If the member is prepared in advance and is fixed to the main body of the product with a hot melt adhesive or the like in the manufacturing process, the end barrier cuff 50 is easily positioned, and the appearance of the product is excellent.
[0040]
( Embodiment of the present invention )
FIG. 7 shows an embodiment of the present invention , and the waist seat member is fixed as shown by the oblique lines in FIG. That is, in the manufacturing process, both end portions in the front-rear direction of the inner part of the first barrier cuff 10 are fixed to the liquid-permeable top sheet 1 with a hot melt adhesive or the like in a region indicated by reference numeral Z4, and the fixed first barrier cuff 10 is fixed. The end barrier cuff 50 from the top is fixed by a hot melt adhesive in the region indicated by Z5, and then the inner part of the second barrier cuff 20 is fixed by a hot melt adhesive in the region indicated by Z6 from above. And integrated with the waist sheet member.
[0041]
Therefore, in the lumbar sheet member, the portions other than the symbols Z4 and Z5 in FIG. 7 (portions where hatched lines are not drawn) are the aforementioned non-fixed portions.
Under the first embodiment shown in FIGS. 1 and 6, the waist sheet member (or the barrier sheet 51 having the elastic elastic members 52 and 53 and the end barrier cuff 50) is Since it is fixed to the liquid permeable top sheet 1 and the first barrier cuff 10, the product is separated from the liquid permeable top sheet 1 as shown in FIG. Thus, as shown by the arrows in the figure, even if the body fluid moves, it is blocked by the fixed portion, and the end barrier cuff 50 functions as a body fluid barrier.
[0042]
In the embodiment of the invention shown in FIG. 7 , the end barrier cuff 50 is below the second barrier cuff 20. For this reason, it is excellent in appearance and, as shown in FIG. 7, the overlapping portion of the end barrier cuff 50 and the second barrier cuff 20 is free (unfixed) with respect to the first barrier cuff 10. Moreover, the length section where the contracting force of the elastic elastic member 52 for standing acts becomes longer, and the front-rear leakage prevention effect is excellent. Further, even when the body fluid that has leaked laterally between the first barrier cuff 10 and the second barrier cuff 20 moves to the front and rear end portions, it can be prevented at the overlapping portion, thereby preventing front and rear leakage. it can.
[0043]
Also in this example, the barrier sheet 51 is made of two liquid-impervious or water-repellent sheets, and the elastic elastic member for fastening, together with the elastic elastic member 52 for standing up between the two sheets 51 and 51, is elastic. A member 53 is interposed in a stretched state, and is prepared in advance as a lumbar sheet member integrated with a hot melt adhesive at an appropriate position or on the entire surface, which is fixed to the main body of the product with a hot melt adhesive or the like in the manufacturing process. Is done. Therefore, the elastic elastic member 53 for waist constitutes a waist band portion together with the barrier sheets 51 and 51.
[0044]
( Second reference embodiment )
8 and 9 show a second reference embodiment . In this example, it is mainly used suitably as a pants-type paper diaper, and the main difference from the above-described embodiment is that a main body back sheet is provided.
[0045]
That is, the main body backsheet 30 is provided with an absorbent body element 4 having a structure in which the absorbent body 3 is wrapped by a liquid-permeable topsheet 1 made of nonwoven fabric or the like and a liquid-impermeable backsheet 2 made of polyethylene or the like. .
[0046]
The main body back sheet 30 is a continuous sheet that defines the overall shape over the entire outer surface of the final product. For example, the main body back sheet 30 is made of a material that exhibits elastic stretchability in at least one direction of the front-rear direction and the width direction. 150% or more. The main body back sheet 30 in the embodiment is formed in an hourglass shape. The main body backsheet is desired to have at least one of air permeability and waterproofness (water repellency), more preferably both characteristics, from the viewpoint of preventing stuffiness. The material can be selected as appropriate, but as an example, heat-sealing a rayon spunlace nonwoven fabric, which is a mixture of polypropylene-based heat fusion fiber and rayon fiber, and a melt blown nonwoven fabric mainly composed of urethane or isoprene rubber-based materials, It is possible to list those that are integrated by ultrasonic bonding, bonding with a hot melt adhesive, and the like, and the former nonwoven fabric is used on the skin side of the wearer.
[0047]
Wherein for the body backsheet 30, first barrier cuffs 10 to the product width direction center side, the second barrier cuff 20 is secured to the outer.
[0048]
These first and second barrier cuffs 10 and 20 preferably have first and second barrier sheets 11 and 21 that exhibit liquid impermeability or water repellency. The upright line of the first barrier sheet 11 is at the side edge of the absorbent body 3, and the upright line of the second barrier sheet 21 is in the easily deformable region outward from the side edge of the absorbent body 3, On the other hand, each outer part is fixed by a hot melt adhesive or the like.
[0049]
Front and rear end barrier cuffs 50, 50 are provided before and after the product.
[0050]
As shown in detail in FIG. 9, between the main body back sheet 30 and the second barrier sheet 21, the elastic elastic member 6 for gasket cuff softens the contact with the skin of the wearer in the illustrated example. For this purpose, a plurality, specifically four, of them are spaced apart in the width direction and fixed to one or both of them under extension by a hot melt adhesive or the like.
[0051]
The first barrier sheet 11 has an outer portion extending from the side edge of the absorbent body 3 to the vicinity of the gasket cuff elastic elastic member 6A, which is located closest to the center in the product width direction of the gasket cuff elastic elastic members 6, 6. And is fixed to the liquid-permeable top sheet 1 and the main body back sheet 30 with a hot melt adhesive or the like. The second barrier sheet 21 partially covers the outer edge portion of the first barrier sheet 11, and is fixed by a hot melt adhesive or the like at the covering portion, and the fixed boundary line is an upright line of the second barrier cuff 20. The position of the upright line is set in the vicinity of the elastic expansion / contraction member 6A for gasket cuff located on the center side in the product width direction.
[0052]
In the case of the pants type, the paper diaper having such a configuration is folded back and forth with the horizontal center line in FIG. 8 as a boundary, and the front and rear side portions of the main body backsheet 30 are fixed to each other by heat sealing or the like. Is done.
[0053]
(Modifications: Each of these examples is within the scope of the embodiments described in each claim)
FIG. 10 shows an example in which the barrier sheet 40 constituting the first barrier cuff 10 and the second barrier cuff 20 is formed by a single sheet continuous in the width direction. In the second barrier cuff 20, the barrier sheet 40 is doubled.
[0054]
In FIG. 11, the first barrier sheet 11 of the first barrier cuff 10 is extended, and the second barrier sheet 21 of the second barrier cuff 20 is fixed thereon.
[0055]
FIG. 12 shows an example in which the barrier sheet 41 constituting the first barrier cuff 10 and the second barrier cuff 20 is formed by a single sheet continuous in the width direction. However, the liquid-permeable top sheet 1 extends outward from the product, and the barrier sheet 41 is fixed thereto.
[0056]
On the other hand, referring back to FIG. 2, in this example, the standing line of the second barrier cuff 20 is located at a position corresponding to the elastic expansion member 6A for gasket cuff, but the elastic expansion member 6, 6, 6, 6A for gasket cuff. As long as it is on the center side in the product width direction from the middle in the width direction of the contraction force acting region, the second barrier cuff 20 stands up basically exhibiting the above-described function.
[0057]
[0058]
The number of the elastic elastic members can be an appropriate number, and the member may be a rubber band, a belt-like elastic band, or the like.
[0059]
The barrier sheet 51 of the end barrier cuff 50 is preferably made of a stretchable material, but need not be stretchable.
[0060]
( Third reference embodiment )
FIG. 13 shows a third reference embodiment in which the elastic elastic member 53 for fastening in the end barrier cuff 50 is eliminated, and another waist band 80 made of, for example, urethane foam is used instead. It is provided separately. The waist band 80 can be provided between the liquid-permeable top sheet 1 and the liquid-impervious back sheet 2 under extension, for example.
[0061]
( Fourth embodiment )
FIG. 14 shows a fourth embodiment, which is an example in which one side barrier cuff 100 is provided. That is, the side barrier cuff 100 preferably has a liquid-impervious or water-repellent barrier sheet 101, which is fixed to the liquid-impervious back sheet 2 with a hot-melt adhesive or the like. The elastic elastic member 102 for side barrier cuffs made of thread rubber or the like is fixed with a hot melt adhesive or the like under the extension so that the rubber stands up on the wearer side.
[0062]
( Fifth embodiment )
FIG. 15 shows a fifth reference embodiment. In the embodiment having one side barrier cuff 100, the end barrier cuff 50 does not have a waist elastic elastic member 53 for fastening. Instead, another waist band 80 made of, for example, urethane foam is provided separately. The hatched portion in FIG. 15 shows an example of a fixed region with a hot melt adhesive for the liquid-permeable top sheet 1 and the liquid-impermeable back sheet 2.
[0063]
(Other)
It will be apparent that there are many variations of combinations of the above embodiments. Moreover, the elastic force of each elastic elastic member can be selected as appropriate, and may be different.
[0064]
【The invention's effect】
As described above, according to the present invention, the front-rear leakage prevention effect is excellent.
[Brief description of the drawings]
FIG. 1 is a plan view of a developed state of a disposable diaper according to a first reference embodiment .
FIG. 2 is a partial cross-sectional view of FIG.
FIG. 3 is a view taken along line 3-3 in FIG. 1;
4 is a view taken along line 4-4 in FIG. 1;
5 is a view taken along line 4-4 of FIG. 1 in a use state.
6 is a partially enlarged view of FIG. 1. FIG.
FIG. 7 is a partially enlarged view of the developed state plan view of the disposable diaper according to the embodiment of the present invention .
FIG. 8 is a plan view of a developed state of the disposable diaper according to the second reference embodiment .
FIG. 9 is a partial cross-sectional view of FIG.
FIG. 10 is a cross-sectional view of a modified example of a side barrier cuff structure.
FIG. 11 is a cross-sectional view of an example of a side barrier cuff structure according to another modification.
FIG. 12 is a cross-sectional view of another modified example of a side barrier cuff structure.
FIG. 13 is a developed state plan view of a disposable diaper showing a third reference embodiment .
FIG. 14 is a developed plan view of a disposable diaper showing a fourth reference embodiment .
FIG. 15 is a developed state plan view of a disposable diaper showing a fifth reference embodiment .
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Liquid-permeable top sheet, 2 ... Liquid-impermeable back sheet, 3 ... Absorber, 4 ... Absorber element, 6, 6A ... Elastic elastic member for gasket cuffs, 10 ... 1st barrier cuff, 11 ... 1st Barrier sheet, 12 ... elastic elastic member for first barrier cuff, 20 ... second barrier cuff, 21 ... second barrier sheet, 22 ... elastic elastic member for second barrier cuff, 30 ... main body back sheet, 50 ... end barrier Cuffs, 51 ... barrier sheet, 52 ... standing elastic elastic member, 53 ... elastic elastic member for fastening, 60 ... abdominal waist band, 80 ... waist band.

Claims (3)

In a paper diaper having side barrier cuffs on both sides of the use surface side of the product body having an absorbent body between the liquid-permeable top sheet and the liquid-impermeable back sheet,
(1) A second portion having an elastic stretchable member in the vicinity of the tip, and a free portion standing on the wearer side at the time of wearing by a contraction force of the elastic stretchable member, with a standing line formed by a fixing region formed by a hot-melt adhesive . With barrier cuffs,
An elastic expansion / contraction member is provided in the vicinity of the tip, and when the free part is mounted due to the contraction force of the elastic expansion / contraction member with a standing line formed by a fixing region by a hot melt adhesive on the center side in the product width direction from the second barrier cuff A first barrier cuff standing on the wearer side in
(2) At least one end portion before and after the product is provided with an end barrier cuff having an edge side fixing portion and a center side portion on the use surface side of the product body,
A longitudinal end corresponding to the free portion of each first barrier cuff is fixed on the liquid-permeable top sheet by a hot melt adhesive,
The edge side fixing portion of the end barrier cuff is fixed by a hot melt adhesive on the liquid-permeable top sheet and on a longitudinal end corresponding to the free portion of each first barrier cuff,
A longitudinal end corresponding to a free portion of each of the second barrier cuffs is fixed on the edge side fixing portion of the end barrier cuff by a hot melt adhesive,
The end barrier cuff is provided with an elastic stretch member along the width direction of the product at the center side portion, and the center side portion of the end barrier cuff is not fixed to each first barrier cuff and The second barrier cuff is fixed to the lower surface of the free part, and is not fixed to the liquid-permeable top sheet, and is an unfixed part. At the time of mounting, the elastic elastic member contracts along the width direction. The non-fixed portion is configured to be separated from the liquid-permeable top sheet.
A disposable paper diaper characterized by that. The disposable diaper according to claim 1, wherein a waist elastic elastic member is provided at an edge side fixed portion of the waist sheet member constituting the end barrier cuff and is formed so as to tighten around the waist . 2. The disposable paper diaper according to claim 1, wherein a waist band is provided separately from the waist sheet member constituting the end barrier cuff and tightens around the waist .

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