JP2018139937A - Pad type disposable diaper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make the reverse side of a pad type disposable diaper easy to carry by hand.SOLUTION: The above problem is solved by the pad type disposable diaper 200. An absorber 23 includes: a plurality of longitudinally extendable slits 40 which are provided with spaces apart in the width direction; an intermediate part 30 which is situated between these slits 40; and a side part 31 which is situated between the slits 40 and the side edges of the absorber 23. At least in one layer 50 on the front side from an opposing face with front side sheet layers 22, 25, 26 in the absorber 23, a part 3 to be superimposed on the side part 31 is joined through a hot melt adhesive HM while a part to be superimposed on the intermediate part 30 is made to be unjoined.SELECTED DRAWING: Figure 12

Description

  The present invention relates to a pad-type disposable diaper having a back surface that can be easily held by hand.

  Pad-type disposable diapers used for night use and the like are sufficiently large from the viewpoint of preventing leakage and ensuring the amount of absorption (see, for example, Patent Documents 1 to 4).

  However, since such a large pad-type disposable diaper has a width that does not fit in the palm of the hand, it has a problem that it is difficult to hold it with one hand during replacement or the like.

  For example, when a caregiver wears a pad-type disposable diaper on a cared person, the back side of the crotch part of the pad-type disposable diaper is grasped and applied to the caregiver's crotch, but the back side of the pad-type disposable diaper is Since there is no unevenness, the current situation is that it can only be forcibly grabbed.

  In addition, care recipients who need to watch and assist when going to the toilet may leak urine due to abdominal pressure or urine disorder before pulling up the pants after urination. At this time, the caregiver may be forced to apply a pad-type disposable diaper to the urination port so that the urine does not leak to the floor or outer. In such a situation, the caregiver either grabs the back of the pad-type disposable diaper with one hand, or grips the end in the width direction when the pad-type disposable diaper is large. In any case, since the manner of holding the pad-type disposable diaper becomes unstable, it is difficult to receive urine with the pad-type disposable diaper, and there is a possibility that the clothes and the surrounding floor surface may be soiled.

  Furthermore, unless the pad-type disposable diaper is stably grasped, it is difficult to place the pad-type disposable diaper at an appropriate mounting position with respect to the cared person standing, and the risk of leakage after mounting increases.

  In order to improve the ease of holding a pad-type disposable diaper, it may be possible to attach a separate member to make a handle, but this will cause the handle to become obstructive except when using the handle, causing discomfort when wearing it Problems occur. In addition, although the thing of patent document 4 has the protrusion part which can become a handle on the back, also when it has a part which protrudes from the beginning of a product in this way, a protrusion part becomes obstructive and the discomfort at the time of mounting | wearing Problems occur.

Japanese Patent Laying-Open No. 2015-039579 JP 2012-157380 A JP 2011-239858 A JP 2013-135717 A

  Then, the main subject of this invention exists in making it easy to hold the back surface of a pad type disposable diaper with a hand.

The main aspects of the present invention that have solved the above problems are as follows.
<First aspect>
A crotch part, a front part and a rear part extending respectively to the front side and the rear side of the crotch part,
A single-layer or multiple-layer absorber provided in a region including the crotch,
At least one backside sheet layer located on the back side from the one or more layers of the absorber, and
Located on the front side of the one or more layers of the absorber, comprising at least one front side sheet layer,
The single-layer or multi-layer absorber includes a plurality of slits extending in the front-rear direction provided at intervals in the width direction, an intermediate portion positioned between the slits, and a slit and a side edge of the absorber. And a side portion located between
In at least one layer on the front side from the surface facing the front sheet layer in the one or more layers of the absorbent body, the portion overlapping the intermediate portion is not bonded or bonded weaker than the bonding of the portion overlapping the side portion. Being
A pad-type disposable diaper characterized by that.

(Function and effect)
In this aspect, a finger can be indirectly pushed into the slit of the absorbent body from the back surface of the pad-type disposable diaper, and the intermediate portion of the absorbent body can be indirectly grasped. Here, in at least one layer on the front side from the surface facing the front sheet layer in the absorbent body, the part overlapping the intermediate part is not joined, or is joined weaker than the joining of the part overlapping the side part. Therefore, when the intermediate part is grasped, the intermediate part can protrude to the back side rather than the side part by separating the non-bonded or weakly bonded layers. I can grasp it firmly. Therefore, it becomes easy to hold the back side of a pad type disposable diaper by hand.
Moreover, in this aspect, since the freedom degree of an intermediate part is high, fit property also improves.
Furthermore, it goes without saying that the urine diffusibility in the direction along the slit is improved by having a slit in the absorbent body. Note that the term “slit” means a penetrating portion on the front and back of the absorbent body (hereinafter referred to as “the slit”). the same).

<Second aspect>
A crotch part, a front part and a rear part extending respectively to the front side and the rear side of the crotch part,
A plurality of layers of absorbers provided in the region including the crotch,
At least one backside sheet layer located on the backside from the absorber located on the backside;
With at least one front sheet layer positioned on the front side than the absorber positioned on the most front side,
The absorber located on the backmost side, or the absorber in a plurality of layers from the absorber located on the backmost side to the intermediate absorber, is provided with a plurality of slits extending in the front-rear direction and spaced apart in the width direction. An intermediate portion located between the slits, and a side portion located between the slit and the side edge of the absorber,
Among the absorbers having the slit, the absorber located on the backmost side, or the absorber in multiple layers from the absorber located on the backmost side to the intermediate absorber, and the nearest absorber on the absorber In at least one layer located, the portion overlapping the intermediate portion is not bonded, or is bonded weaker than the portion overlapping the side portion,
A pad-type disposable diaper characterized by that.

(Function and effect)
Pad-type disposable diapers having a structure in which a plurality of absorbent bodies are laminated are widely used for the purpose of ensuring the amount of absorption. This aspect is intended for a pad-type disposable diaper having such a multilayer absorbent body. In this aspect, the finger is indirectly pushed into the slit of the absorbent body located on the back side of the pad-type disposable diaper, or the absorber in a plurality of layers from the absorber on the back side to the intermediate absorber, The intermediate part of the absorber can be grabbed indirectly. Here, among the absorbers having slits, the absorber located on the backmost side, or the absorbers in a plurality of layers from the absorber located on the backmost side to the intermediate absorber, and the closest absorber on the absorber In at least one layer between them, the part that overlaps the intermediate part is either non-bonded or weaker than the part that overlaps the side part. Alternatively, by separating the weakly bonded layers, the middle part can protrude to the back side rather than the side part, so that the middle part of the most backside absorber can be grasped more securely without breaking the absorber. . Therefore, it becomes easy to hold the back side of a pad type disposable diaper by hand.
Moreover, in this aspect, it goes without saying that the urine diffusibility in the direction along the slit is improved by having the slit in the absorber.

<Third Aspect>
The slit is continuously or stepwise widened from the front side to the back side,
The pad type disposable diaper of the 1st or 2nd aspect.

(Function and effect)
When the slit is shaped like this aspect, it becomes easy to push a finger into the slit from the back surface of the pad-type disposable diaper when the intermediate part of the absorbent body is grasped.

<Fourth aspect>
The back side sheet layer forming the back side of the pad-type disposable diaper is a non-slip part on which the back side of the intermediate part and the part overlapping the slits on both sides thereof is less slippery than the surroundings.
The pad-type disposable diaper according to any one of the first to third aspects.

(Function and effect)
By having the anti-slip portion at the portion gripped by the hand as in the present embodiment, not only is it easier to hold by hand, but also an effect of preventing slippage in the mounted state is exhibited.

<Fifth aspect>
Two slits are provided at intervals in the width direction,
The slit is curved so that the interval in the width direction of the slit becomes wider from the middle in the front-rear direction toward both front and rear sides,
The pad type disposable diaper according to any one of the first to fourth aspects.

(Function and effect)
When the slit has such a shape, it becomes easier to grasp with the hand and the fit to the crotch portion is improved.

<Sixth aspect>
On the back side, the back side sheet layer has a groove that has entered the slit of the absorber,
The pad type disposable diaper of any one aspect of 1st-5th.

(Function and effect)
If a groove is provided on the back surface of the pad-type disposable diaper in advance as in this embodiment, the intermediate portion can be easily grasped only by the touch of the hand.

<Seventh aspect>
Two slits are provided at intervals in the width direction,
With the imaginary line along the front-rear direction passing through the slit as a folding position, one side portion and the other side portion are folded to the center in the width direction,
The pad type disposable diaper of any one aspect of 1st-6th.

(Function and effect)
If the product is folded at the position passing through the slit as in this mode, the fold remains at the position passing through the slit when the folded side part is unfolded during use. It becomes a mark when grabbing with Therefore, it becomes easier to grasp by hand.

  As described above, according to the present invention, there are advantages such that the back surface of the pad-type disposable diaper can be easily held by hand.

It is a top view which shows the surface side of the expansion | deployment state of a pad type disposable diaper. It is a top view which shows only the principal part. It is YY sectional drawing of FIG. It is XX sectional drawing of FIG. It is a top view which shows the back surface side of the expansion | deployment state of a pad type disposable diaper. It is sectional drawing of the other form equivalent to the XX cross section of the form shown by FIG. It is sectional drawing of the other form equivalent to the YY cross section of the form shown by FIG. It is sectional drawing of the other form equivalent to the XX cross section of the form shown by FIG. It is a top view of another absorber. (A) It is sectional drawing which shows each the state before grasping with a hand, and (b) the state grasped with the hand each simply. (A) It is sectional drawing which shows each the state before grasping with a hand, and (b) the state grasped with the hand each simply. (A) It is sectional drawing which shows each the state before grasping with a hand, and (b) the state grasped with the hand each simply. It is sectional drawing which shows simply the other form which has a groove | channel on the back surface. It is sectional drawing which shows a folding position simply. It is a perspective view which shows a folding procedure.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings. In the terminology of the present invention, the “groin portion” means a portion corresponding to the crotch of the body at the time of use, and depending on the product, a predetermined portion on the front side from the center in the front-rear direction LD of the article or its vicinity as shown in the figure. Or a predetermined range in the center of the front-rear direction LD of the article. In the case of having a narrowed narrow portion in the middle of the front-and-rear direction LD of the article or in the middle of the front-and-rear direction LD of the absorbent body, a predetermined front-rear direction having the minimum width portion of one or both of the constricted portions as the center of the front-rear direction LD It means the range of the direction LD. Further, “front part (abdominal part)” means a part on the front side of the crotch part, and “rear part (back side part)” means a part on the rear side of the crotch part.

  1 to 4 show a pad-type disposable diaper example 200 according to the present invention. This pad-type disposable diaper 200 has a crotch portion C2, and a front portion F2 and a rear portion B2 extending on both front and rear sides thereof. The dimensions of each part can be determined as appropriate. For example, the total length of the article (length in the front-rear direction LD) L is about 350 to 700 mm, and the total width W1 is about 130 to 400 mm (however, wider than the width of the absorbent surface of the diaper). In this case, the length of the front-rear direction LD of the crotch portion C2 is about 10 to 150 mm, the length of the front-side portion F2 is about 50 to 350 mm, and the length of the rear portion B2 is the length of the front-rear direction LD. The length can be about 50 to 350 mm. Moreover, the width W3 of the crotch part C2 can be 150 cm or more, especially about 200-260 cm in the case of an adult.

  The pad-type disposable diaper 200 has a basic structure in which an absorber 23 is interposed between an inner surface of a liquid-impermeable sheet 21 having an outer sheet 27 laminated on the outer surface and a liquid-permeable top sheet 22. Yes.

  A liquid-impermeable sheet 21 is provided on the back side of the absorber 23 so as to protrude from the peripheral edge of the absorber 23. As the liquid-impermeable sheet 21, a sheet having moisture permeability can be used in addition to a polyethylene film or the like without impairing the water barrier from the viewpoint of preventing stuffiness. This water-impervious / breathable sheet is a microporous sheet obtained by, for example, melt-kneading an inorganic filler in an olefin resin such as polyethylene or polypropylene to form a sheet, and then stretching in a uniaxial or biaxial direction. Can be used.

  Further, the outer surface of the liquid-impermeable sheet 21 is covered with an exterior sheet 27 made of a nonwoven fabric, and the exterior sheet 27 protrudes outside the periphery of the back sheet 21 with a predetermined protrusion width. Various nonwoven fabrics can be used as the exterior sheet 27. As the material fiber constituting the non-woven fabric, synthetic fibers such as polyethylene or polypropylene such as olefin, polyester and amide, recycled fibers such as rayon and cupra, and natural fibers such as cotton can be used.

  The front side of the absorber 23 is covered with a liquid-permeable top sheet 22. Although the absorber 23 partially protrudes from the side edge of the top sheet 22 in the illustrated form, the width of the top sheet 22 can be widened so that the side edge of the absorber 23 does not protrude. As the top sheet 22, a perforated or non-porous nonwoven fabric or a perforated plastic sheet is used. As the material fiber constituting the non-woven fabric, synthetic fibers such as polyethylene or polypropylene such as olefin, polyester and amide, recycled fibers such as rayon and cupra, and natural fibers such as cotton can be used.

  It is desirable to interpose the intermediate sheet 25 between the top sheet 22 and the absorber 23. The intermediate sheet 25 is provided to prevent the urine that has been absorbed by the absorbent body 23 from reversing and is made of a material having low water retention and high liquid permeability, such as various nonwoven fabrics or mesh films. Is desirable. When the front end of the top sheet 22 is 0% and the rear end of the top sheet 22 is 100%, the front end of the intermediate sheet 25 is preferably located in the range of 0 to 11%. It is preferably located in the range of 92 to 100%. The width W4 of the intermediate sheet 25 is preferably about 50 to 100% of the minimum width W5 of the constricted portion 23n of the absorber 23 described later.

  At both ends of the pad-type disposable diaper 200 in the front-rear direction LD, the exterior sheet 27 and the liquid-permeable top sheet 22 are attached to the front and rear ends of the absorbent body 23 so as to extend to the front and rear sides, and the absorbent body 23 does not exist. An end flap portion EF is formed. On both sides of the pad-type disposable diaper 200, the exterior sheet 27 extends outward from the side edge of the absorbent body 23. On the inner surface of the portion from the extended part to the side of the top sheet 22, there is a three-dimensional gather. An outer portion 24x in the width direction WD of the gather sheet 24s that forms 24 is pasted over the entire front-rear direction LD, and constitutes a side flap portion SF in which the absorber 23 does not exist. These pasted portions are shown in a hatched pattern in FIG. 1 and can be formed by hot melt adhesive, heat sealing, or ultrasonic sealing. When the exterior sheet 27 is not provided, the liquid-impermeable sheet 21 can be extended to the side flap part SF instead of the exterior sheet 27 to form the outer surface side of the side flap part SF.

  As a material for the gather sheet 24s, a plastic sheet or a melt-blown nonwoven fabric can be used, but from the viewpoint of touch to the skin, a nonwoven fabric that is water-repellent treated with silicon or the like is preferably used.

  A portion 24c on the center side of the gather sheet 24s in the width direction WD extends to the top sheet 22, and an elongated elastic member 24G extends along the front-rear direction LD at the end on the center side in the width direction WD. In a stretched state, it is fixed with a hot melt adhesive or the like. As the elongated elastic member 24G, styrene rubber, olefin rubber, urethane rubber, ester rubber, polyurethane, polyethylene, polystyrene, styrene butadiene, silicon, polyester, etc., which are formed in a thread shape, a string shape, a belt shape, or the like. Ordinarily used materials can be used.

  In addition, both gather sheets 24s are bonded and fixed to the inner surface of the article (in the illustrated form, the surface of the top sheet 22 and the outer surface of the exterior sheet 27) throughout the entire front-rear direction LD, and the width portion WD is fixed in the width direction. The central portion 24c of the WD is bonded and fixed to the inner surface of the article (the surface of the top sheet 22 in the illustrated embodiment) at both ends in the front-rear direction LD, and the inner surface of the article (the top in the illustrated embodiment) between the opposite ends of the front-rear direction LD. The sheet 22 is not fixed to the surface). As shown in FIG. 1, the non-fixed portion is a portion that serves as a leakage prevention wall that stands up elastically with respect to the inner surface of the article (the surface of the top sheet 22 in the illustrated embodiment). It is located at the boundary between the outer fixed portion 24x and the inner portion 24c in the width direction WD at 24s.

  The absorbent body 23 is basically made of a pulp fiber pile, an aggregate of filaments such as cellulose acetate, or a non-woven fabric, and is obtained by mixing, adhering, etc., a superabsorbent polymer such as particulates as necessary. Can be used. The absorbent body 23 can be wrapped with a wrapping sheet 26 such as crepe paper as required, such as when mixing superabsorbent polymer particles. Moreover, the shape of the absorber 23 can be set to an appropriate shape such as a strip shape in which the front portion is relatively narrower than the rear portion, a rectangular shape, or a trapezoidal shape.

The fiber basis weight and the basis weight of the superabsorbent polymer in the absorbent body 23 can be appropriately determined, but the fiber basis weight is preferably about 100 to 600 g / m ^2, and the basis weight of the absorbent polymer is about 0 to 400 g / m ^2. Is preferable.

  The absorber 23 extends from the front portion F2 to the rear portion B2, and in the illustrated form, a predetermined portion in the middle of the front-rear direction LD including the crotch portion C2 is formed as a narrow neck portion 23n. The minimum width W5 of the constricted portion 23n is preferably about 50 to 65% of the width W2 of the non-constricted portion located before and after the constricted portion 23n. Further, when the front end of the article is 0% and the rear end of the article is 100%, the front end of the constricted portion 23n is preferably located in the range of 10 to 25%, and the rear end of the constricted portion 23n is 40 to 65%. It is preferable that the portion of the constricted portion 23n having the minimum width W5 (minimum width portion) is preferably located in the range of 25 to 30%.

  The absorber 23 may have a two-layer structure including an upper absorber 23A and a lower absorber 23B as shown in FIGS. 3, 4 and 6, or a single-layer structure as shown in FIGS. Although not shown, a laminated structure of three or more layers may be used.

(Application example of the first aspect)
In the form shown in FIGS. 3 and 4 and the form shown in FIGS. 7 and 8, the absorber 23 includes a plurality of slits 40 extending in the front-rear direction LD provided at intervals in the width direction WD, and the slits 40. It has the intermediate part 30 located between, and the side part 31 located between the slit 40 and the side edge of the said absorber 23. As shown in FIG.

  3 and 4, in the case of the absorber 23 having a multi-layer structure, the slits 40 are provided in all the absorber layers 23A and 23B, and from the surface facing the back side sheet layer to the front side sheet layer. The slit 40 continues in the thickness direction to the opposing surface. Here, the back side sheet layer is a sheet layer located on the back side of the absorbent body 23. In this embodiment, the portion of the packaging sheet 26 located on the back side of the absorbent body 23, the liquid-impermeable sheet 21, and the exterior sheet 27. Corresponds to this. Similarly, the front side sheet layer is a sheet layer located on the front side of the absorbent body 23. In this embodiment, the portion of the packaging sheet 26 located on the front side of the absorbent body 23, the intermediate sheet 25, and the top sheet 22 correspond to this. To do.

  As shown in FIG. 10 (a) in the case of the multi-layer form shown in FIGS. 3 and 4, and in FIG. 12 (a) in the case of the single-layer form shown in FIGS. The at least one interlayer 50 on the front side from the surface of the absorbent body 23 facing the front side sheet layer is joined to the side part 31 via the hot melt adhesive HM (may be welded), but the intermediate part. A portion overlapping 30 is not joined. The interlayer 50 that overlaps the intermediate portion 30 can be bonded, but in that case, it is necessary to bond the layer 50 weaker than the portion that overlaps the side portion 31. In the interlayer 50 having these non-bonded or weakly bonded portions, the portion overlapping the side portion 31 may be unbonded.

  The interlayer 50 having a non-bonded or weakly bonded portion is not particularly limited as long as it is on the front side of the absorber 23 (that is, on the front side of the absorber layer positioned closest to the front side when the absorber 23 has a plurality of layers), For example, it may be between the absorbent body 23 and the packaging sheet 26 (front side sheet layer), between the packaging sheet 26 and the intermediate sheet 25, or between the intermediate sheet 25 and the top sheet 22.

  In the pad-type disposable diaper 200 configured as described above, the multi-layer configuration shown in FIGS. 3 and 4 is shown in FIG. 10B, and the single-layer configuration shown in FIGS. 7 and 8 is FIG. In (b), as shown in a simplified manner, a finger is indirectly pushed into the slit 40 of the absorbent body 23 from the back surface of the pad-type disposable diaper 200 to indirectly grasp the intermediate portion 30 of the absorbent body 23. Can do. Here, in at least one interlayer 50 on the front side from the surface of the absorbent body 23 facing the front sheet layer, the portion overlapping the intermediate portion 30 is not joined or is weaker than the joining of the portion overlapping the side portion 31. When the intermediate portion 30 is grasped, the intermediate portion 30 can protrude to the back side of the side portion 31 when the non-bonded or weakly bonded interlayer 50 is separated from the side portion 31. The intermediate portion 30 can be grasped more securely without breaking the heel. Therefore, it becomes easy to hold the back surface of the pad type disposable diaper 200 by hand. Moreover, in this example, since the freedom degree of the intermediate part 30 is high, fit property also improves. Furthermore, it goes without saying that the urine diffusibility in the direction along the slit 40 is improved by having the slit 40 in the absorber 23.

(Application example of the second aspect)
The embodiment shown in FIG. 6 has an absorber 23 having a two-layer structure. The lower absorber 23B includes a plurality of slits 40 extending in the front-rear direction LD provided at intervals in the width direction WD. It has the intermediate part 30 located between the slits 40, and the side part 31 located between the slits 40 and the side edges of the lower absorber 23B.

  Although not shown, the absorber 23 can also have three or more layers. The slit 40 may be provided in the absorber layer located on the backmost side or in a plurality of absorber layers from the absorber layer located on the backmost side to the intermediate absorber layer. Similarly to the embodiment shown in FIG. 4, it may be provided in all the absorbers 23A and 23B. When the slit 40 is provided in the absorber of a plurality of layers, the slit 40 continues in the thickness direction from the surface facing the back side sheet layer in the absorber layer located on the most back side to the absorber 23. Here, the back side sheet layer is a sheet layer located on the back side of the absorber 23 located on the most back side, and in this embodiment, a portion located on the back side of the absorber layer located on the most back side in the packaging sheet 26, a liquid The impermeable sheet 21 and the exterior sheet 27 correspond to this. Similarly, the front side sheet layer is a sheet layer located on the front side of the absorbent body 23 located closest to the front side, and in this embodiment, a portion located on the front side of the absorbent layer located closest to the front side in the packaging sheet 26, an intermediate sheet 25, the top sheet 22 corresponds to this.

  As shown in a simplified manner in FIG. 11A, in at least one interlayer 51 located between the lower absorbent body 23B and the upper absorbent body 23A, a portion overlapping the side portion 31 is interposed via a hot melt adhesive. However, the portion overlapping the intermediate portion 30 is not joined. The interlayer 51 in the portion overlapping the intermediate portion 30 can be bonded, but in that case, it is necessary to bond weaker than the bonding in the portion overlapping the side portion 31. In the interlayer 51 having these non-bonded or weakly bonded portions, the portion overlapping the side portion 31 may be unbonded.

  Among the absorber layers having the slits 40, the interlayer 51 having a non-bonded or weakly bonded portion includes a plurality of layers from the absorber layer located on the backmost side or the absorber layer located on the backmost side to the intermediate absorber layer. There is no particular limitation as long as it is at least one interlayer located between the absorber layer of the layer and the nearest absorber layer above it, for example, the adjacent upper absorber 23A and lower absorber as shown in the figure When 23B is packaged by the packaging sheet 26, it is set as the interlayer 51 between the packaging sheet 26 of the upper absorbent body 23A and the packaging sheet 26 of the lower absorbent body 23B, or the upper absorbent body 23A and the lower absorbent body 23B are in direct contact with each other. The upper absorbent body 23A and the lower absorbent body 23B, or when at least one of the absorbent bodies 23 is packaged with the packaging sheet 26, the packaging sheet 26 and one of the absorbent bodies 2 It is possible to or with between. An appropriate sheet layer may be interposed instead of the packaging sheet 26 in these cases. Moreover, the absorber 23 which has the slit 40 above the interlayer 51 which has a part of non-joining or weak joining may be laminated | stacked by two or more layers.

  In the pad type disposable diaper 200 configured as described above, as shown in a simplified manner in FIG. 11B, the absorbent layer is located on the most back side from the back surface of the pad type disposable diaper 200, or located on the most back side. The intermediate portion 30 of the absorber 23 can be indirectly grasped by pressing a finger indirectly into the slits 40 of the plurality of absorber layers from the absorber layer to the intermediate absorber layer. Here, among the absorbers 23 having the slits 40, the absorber layer located on the backmost side, or a plurality of absorber layers from the absorber layer located on the backmost side to the intermediate absorber layer, In at least one interlayer 51 located between the adjacent absorbers 23, the portion overlapping the intermediate portion 30 is not joined, or is joined weaker than the portion overlapping the side portion 31. When the portion 30 is grasped, the intermediate portion 30 can protrude to the back side rather than the side portion 31 by separating the non-bonded or weakly bonded interlayer 51, so that the absorber 23 is not broken and the back side The intermediate portion 30 of the absorbent body 23 can be gripped more firmly. Therefore, it becomes easy to hold the back surface of the pad type disposable diaper 200 by hand. Also in this example, the urine diffusibility in the direction along the slit 40 is improved by providing the absorber 23 with the slit 40.

(slit)
The position of the slit 40 in the front-rear direction LD and the length 40L of the front-rear direction LD are not particularly limited. Therefore, the slit 40 may be provided over the entire front-rear direction LD of the absorber 23, but is preferably provided at least in the crotch portion C2. In particular, it is desirable to extend from the crotch side end of the front part F2 to the crotch side end of the rear part B2 as shown in the figure. Further, as shown in FIG. 9A, the rear portion of the slit 40 can be bent toward the outside in the width direction WD (the front side can be bent similarly). More specifically, when the front end of the disposable diaper 200 is 0% and the rear end of the disposable diaper 200 is 100%, the front end of the slit 40 is preferably located in a range of 15 to 30%. The rear end of 40 is preferably located in the range of 40 to 70%.

  In addition to providing one slit 40 on each of the left and right sides, three or more slits 40 can be provided although not shown. The position of the slit 40 in the width direction WD is preferably symmetrical, and the interval 40D of the slit 40 is preferably about 10 to 30% of the minimum width W5 of the constricted portion 23n of the absorber 23 in a normal case. .

  The slit 40 may extend linearly in the front-rear direction LD or may extend in a curved line. In particular, as shown in FIG. 9B, in the embodiment in which two slits 40 are provided with a gap in the width direction WD, the gap in the width direction WD of the slit 40 is from the middle of the front-rear direction LD to the front and rear sides. If the slit 40 is curved so as to become wider as it goes, it becomes easier to grip with the hand and the fit to the crotch C2 is also improved.

  In the absorber 23 shown in FIG. 2, the front and rear ends of the slit 40 do not penetrate through the periphery of the absorber 23. However, as in the example shown in FIG. You may make it reach. Note that, in a form in which both front and rear ends of the slit 40 reach the side edges of the absorber 23, the portion on the side of the slit 40 is separate from the portion between the slits 40.

  The width 40W of the slit 40 is not particularly limited as long as the opposing side walls are spaced apart from each other. However, in a normal case, the width 40W is preferably about 10 to 20% of the minimum width W5 of the constricted portion 23n of the absorber 23. In the case of an adult product, it can be about 5 to 32 mm. The width 40W of the slit may be substantially constant in the thickness direction of the absorber, but may become wider toward the front and back at least one side. In particular, as shown in FIG. 12, when the width of the slit 40 increases continuously or stepwise from the front side to the back side, when the intermediate portion of the absorbent body 23 is gripped, from the back surface of the pad type disposable diaper 200 This is preferable because it is easy to push a finger into the slit 40.

(Back side sheet layer)
As shown in FIG. 5, the back side sheet layer forming the back side of the pad-type disposable diaper, that is, the exterior sheet shown in FIG. When it is 27 U, it becomes easier to discriminate the part to be grasped by hand, and it becomes easier to hold by hand, and also exhibits the effect of preventing displacement in the mounted state.

  The anti-slip portion 27U can be formed by attaching an anti-slip sheet or applying an anti-slip resin to a portion of the exterior sheet 27 that is gripped by hand, that is, a portion that includes a portion that overlaps the slit 40.

(Back groove)
As shown in FIG. 13, when the back-side sheet layer has a groove 60 that has entered the slit 40 of the absorbent body 23 on the back surface of the pad-type disposable diaper 200, the intermediate portion 30 can be easily formed only by the touch of the hand. Can grab. Moreover, when the slit 40 and the groove | channel 60 are provided in the range of the front-back direction LD containing the crotch part C2 like the example of illustration, the side part 31 of the absorber 23 will be easy to bend along a thigh root, and a crotch part C2 fit improves. The example shown in FIG. 13A is a modification of the example shown in FIG. 10, the example shown in FIG. 13B is a modification of the example shown in FIG. 11, and the example shown in FIG. 13C. Is a modification of the example shown in FIG.

  The depth of the groove 60 can be determined as appropriate, and the bottom of the groove 60 of the back side sheet layer may be close to the layer located on the front side of the slit 40 as shown in FIGS. 13 (a) and 13 (b). As shown in FIG. 13C, they may be separated.

  The bottom 61 of the groove 60 in the back sheet layer is joined (may be welded) to the layer located on the front side of the slit 40 via the hot melt adhesive HM as shown in FIGS. 13 (a) and 13 (b). However, as long as the groove 60 is formed in the product state, the bottom 61 of the groove 60 in the back side sheet layer is the front side of the slit 40 as shown in FIG. 13B. It is not necessary to be bonded to the layer located at the position.

(Product form)
In the wide pad-type disposable diaper 200, as shown in FIG. 15, both end portions 202 in the width direction WD are folded back onto the intermediate portion 201 in the width direction WD, and then folded in the front-rear direction LD (or folded in two). Often sold as a product in a folded state. Therefore, as shown in FIG. 14, two slits 40 are provided at intervals in the width direction WD, and one imaginary line along the front-rear direction LD passing through the slit 40 is set as a folding position as shown by a two-dot chain line. It is also proposed to fold the side portion 31 and the other side portion 31 to the center side in the width direction WD. In this way, if the product is folded at a position passing through the slit 40, the fold remains at the position passing through the slit 40 when the folded side portion 31 is unfolded during use. It becomes a mark when grabbing by hand. Therefore, it becomes easier to grasp by hand. The example shown in FIG. 14 (a) is a modification of the example shown in FIG. 10, the example shown in FIG. 14 (b) is a modification of the example shown in FIG. 13 (b), and FIG. The example shown in FIG. 13 is a modification of the example shown in FIG.

<Explanation of terms in the specification>
When the following terms are used in the specification, they have the following meanings unless otherwise specified in the specification.
The “front / rear (vertical) direction” means a direction connecting the ventral side (front side) and the back side (rear side), and the “width direction WD” means a direction (left / right direction) orthogonal to the front / rear direction LD. .
-"Developed state" means a state where the plate is flattened without contraction or slack.
“Elongation rate” means a value when the natural length is 100%.
・ "Weight" is measured as follows. After the sample or test piece has been pre-dried, it is left in a test room or apparatus in a standard state (test location is temperature 20 ± 5 ° C., relative humidity 65% or less) to obtain a constant weight. Pre-drying refers to making a sample or test piece constant in an environment where the relative humidity is 10 to 25% and the temperature does not exceed 50 ° C. In addition, it is not necessary to perform preliminary drying about the fiber whose official moisture content is 0.0%. A sample with a size of 200 mm × 250 mm (± 2 mm) is cut out from the test piece in a constant weight using a rice-basis plate (200 mm × 250 mm, ± 2 mm). Measure the weight of the sample, multiply it by 20, calculate the weight per square meter, and use it as the basis weight.
・ "Thickness" of the absorber is a thickness measuring instrument (Peacock, dial thickness gauge large type, model JB (measurement range 0 to 35 mm) or model K-4 (measurement range 0 to 50 mm)) manufactured by Ozaki Mfg. Co., Ltd. Measure the sample and the thickness meter horizontally.
- "thickness" of the non-absorbent uses automatic thickness measuring instrument (KES-G5 Handy Compression measurement program), load: 10 gf / cm ^2, and the pressure area: automatically measured under the conditions of 2 cm ^2.
・ If there is no description about the environmental conditions in the test and measurement, the test and measurement shall be performed in a test room or equipment in the standard condition (test location is temperature 20 ± 5 ℃, relative humidity 65% or less). .
-Unless otherwise specified, the dimensions of each part mean dimensions in a deployed state, not a natural length state.

  The present invention can be used for a pad-type disposable diaper.

  B2 ... rear side part, C2 ... crotch part, F2 ... front side part, LD ... front-back direction, WD ... width direction, 21 ... liquid impervious sheet, 22 ... top sheet, 23 ... absorber, 23A ... upper absorber, 23B ... Lower absorbent body, 24 ... Solid gather, 24s ... Gather sheet, 25 ... Intermediate sheet, 26 ... Packaging sheet, 27 ... Exterior sheet, 27U ... Non-slip part, 30 ... Intermediate part, 31 ... Side part, 40 ... Slit 50, 51 ... interlayer, 60 ... groove, 200 ... pad type disposable diaper.

Claims (7)

A crotch part, a front part and a rear part extending respectively to the front side and the rear side of the crotch part,
A single-layer or multiple-layer absorber provided in a region including the crotch,
At least one backside sheet layer located on the back side from the one or more layers of the absorber, and
Located on the front side of the one or more layers of the absorber, comprising at least one front side sheet layer,
The single-layer or multi-layer absorber includes a plurality of slits extending in the front-rear direction provided at intervals in the width direction, an intermediate portion positioned between the slits, and a slit and a side edge of the absorber. And a side portion located between
In at least one layer on the front side from the surface facing the front sheet layer in the one or more layers of the absorbent body, the portion overlapping the intermediate portion is not bonded or bonded weaker than the bonding of the portion overlapping the side portion. Being
A pad-type disposable diaper characterized by that. A crotch part, a front part and a rear part extending respectively to the front side and the rear side of the crotch part,
A plurality of layers of absorbers provided in the region including the crotch,
At least one backside sheet layer located on the backside from the absorber located on the backside;
With at least one front sheet layer positioned on the front side than the absorber positioned on the most front side,
The absorber located on the backmost side, or the absorber in a plurality of layers from the absorber located on the backmost side to the intermediate absorber, is provided with a plurality of slits extending in the front-rear direction and spaced apart in the width direction. An intermediate portion located between the slits, and a side portion located between the slit and the side edge of the absorber,
Among the absorbers having the slit, the absorber located on the backmost side, or the absorber in multiple layers from the absorber located on the backmost side to the intermediate absorber, and the nearest absorber on the absorber In at least one layer located, the portion overlapping the intermediate portion is not bonded, or is bonded weaker than the portion overlapping the side portion,
A pad-type disposable diaper characterized by that. The slit is continuously or stepwise widened from the front side to the back side,
The pad-type disposable diaper according to claim 1 or 2. The back side sheet layer forming the back side of the pad-type disposable diaper is a non-slip part on which the back side of the intermediate part and the part overlapping the slits on both sides thereof is less slippery than the surroundings.
The pad type disposable diaper of any one of Claims 1-3. Two slits are provided at intervals in the width direction,
The slit is curved so that the interval in the width direction of the slit becomes wider from the middle in the front-rear direction toward both front and rear sides,
The pad type disposable diaper of any one of Claims 1-4. On the back side, the back side sheet layer has a groove that has entered the slit of the absorber,
The pad type disposable diaper of any one of Claims 1-5. Two slits are provided at intervals in the width direction,
With the imaginary line along the front-rear direction passing through the slit as a folding position, one side portion and the other side portion are folded to the center in the width direction,
The pad type disposable diaper of any one of Claims 1-6.

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