JP2013135756A - Absorbent article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an absorbent article such as an absorbent pad, a urine absorbing pad and an incontinence pad, which is used by being inserted in an interposed manner into an outer of a disposable diaper, underwear or the like.SOLUTION: In the absorbent article 1, a rectangular absorbent base material 2 in which an absorber 5 is interposed between a liquid-permeable top sheet 3 and a liquid-permeable back sheet 4 or a liquid-impermeable back sheet 4a, is formed by being folded like an accordion and fixed to form a crest portion 1a and a valley portion 1b. The absorbent base material 2 is folded like an accordion in an approximately equal width dimension to make the crest portion 1a and the valley portion 1b expandable.

Description

  The present invention relates to an absorbent article such as an absorbent pad, a urine-absorbing pad, and an incontinence pad that is used by being inserted in an outer such as disposable paper diapers and underwear.

  Pants-type paper diapers, tape-type paper diapers, flat-type paper diapers, incontinence pads, sanitary napkins, etc. are widely available as body fluid absorbing articles that absorb body fluids such as urine and watery stool. It is an indispensable item for comfortable daily life.

  For example, disposable pants-type disposable diapers are provided for a wide range of uses from infants to adults, and are widely used as daily consumables not only at home but also in hospitals, various nursing care facilities, nursing facilities, and the like. Recently, in consideration of strengthening / improvement of absorption performance, cost, environment, and worker efficiency, instead of using disposable disposable diapers alone, separate absorbent properties such as an absorbent pad as an inner The mainstream is an inner combined style in which articles are used in combination, and after use, the inner body that has absorbed body fluid is replaced, and disposable disposable diapers are replaced as needed.

  As an absorbent article as the inner, there is an absorbent article in which an absorbent body is interposed between a liquid-impermeable back sheet and a liquid-permeable top sheet in order to absorb body fluid such as urine and watery stool. It is used. And in order to prevent the bodily fluid once absorbed by the absorbent body from reversing due to the movement of the wearer's body, a configuration in which a second sheet is interposed between the liquid-permeable top sheet and the absorbent body is also employed. . This second sheet acts as a body fluid diffusion sheet that receives the body fluid that has entered through the liquid-permeable top sheet and moves it to the absorbent body to absorb it, and at the same time, prevents reversal.

  Further, an absorbent article comprising a liquid-impervious sheet and an absorbent body disposed on both surfaces of the liquid-impervious sheet, and by holding the absorber on both surfaces of the liquid-impervious sheet, There has also been provided an absorbent article that can absorb urine from both sides and can absorb and retain the absorbed urine without falling to the opposite side, and can be used according to the wearer's body shape and symptoms of use (Patent Document 1). Furthermore, in order to promote the absorption rate in the absorbent body and expand the absorbent region and improve the absorption capacity, the top laminated body includes a top sheet, a back sheet, a first laminated body, and a second laminated body. A slot-shaped first through portion is formed that penetrates from the upper surface to the opposing surface in a direction substantially perpendicular to the thickness direction, and the second stacked body penetrates from the opposing surface to the lower surface in a direction substantially perpendicular to the thickness direction. There is also provided a urine collecting pad in which a slot-like second through portion that overlaps with one through portion is formed (Patent Document 2).

JP 2009-178235 A JP 2011-104021 A

  The absorbent article as the inner part is required to absorb the discharged body fluid quickly and hold the absorbed body fluid so as not to leak outside. Moreover, since it contacts a user directly, it is also requested | required that the adhesiveness to a local area should be high with the good touch.

  However, since all of the conventional absorbent articles as the inner is made of a flat absorbent sheet, when the amount of body fluids such as urine discharged and the discharge speed exceed the absorption performance within the absorption range in a specific area, Even if the absorbent article as a whole has a remaining absorption capacity, it can no longer absorb body fluid and leaks from the absorbent article as the inner. In addition, the conventional absorbent article is designed to absorb a wide range of absorbents by diffusing body fluid into the sheet-like absorbent article, so that the body fluid diffused over a wide area touches the skin after draining the body fluid. This is uncomfortable and unfavorable for hygiene.

  Furthermore, due to the flat sheet shape, it is difficult to say that the adhesion to the user's body and the followability to the movement of the body are good, and between the user's body during wearing. A gap may be formed in the body, and the discharged body fluid may leak out of the gap through the skin.

  On the other hand, according to Patent Document 1, the absorption performance is improved by providing the absorber on both surfaces of the non-liquid-permeable sheet. Not only can it not be resolved, but rather the user's adherence to the body and the ability to follow the movement of the body will deteriorate. Further, according to Patent Document 2, the first laminated body and the second laminated body corresponding to the absorber are provided with the slot-like first through part and second through part, respectively. We are trying to improve. However, it does not change to the flat sheet shape, and it is not only possible to eliminate the above-mentioned drawbacks, but rather the complexity of the structure makes it possible to adhere to the user's body and to follow the movement of the body. Will get worse.

  Therefore, the applicant solves these problems at the same time, provides an absorbent article as a new inner that has sufficient absorption performance, prevents leakage of absorbed body fluid, and has high adhesion to the user's body. The purpose is to do.

  In order to achieve the above object, the present invention provides a bellows-shaped absorbent base material having an absorbent body interposed between a liquid-permeable top sheet and a liquid-permeable back sheet or a liquid-impermeable back sheet. An absorbent article having a peak portion and a valley portion is provided as a basis by being folded and fixed in a shape. And the absorptive base material was folded in the shape of a bellows with a substantially uniform width dimension, a peak part and a valley part were made expandable, and both edge parts of the direction orthogonal to a folding direction were each hold | maintained and fixed to the bellows shape.

  Further, both edge portions in the direction orthogonal to the folding direction are fixed in a state where they are separated from each other while holding the bellows shape, and the crest portion and the trough portion are loosely connected to each other. Further, both edge portions in the direction orthogonal to the folding direction are fixed in a state where they are in close contact with each other while holding the bellows shape, and the peak portion and the valley portion are brought into close contact with each other. Alternatively, one of the edges in the direction orthogonal to the folding direction is in close contact, and the other is fixed in a separated state, and the peak and valley on one side in the direction orthogonal to the folding direction are in close contact with each other. And the other side is loosely contacted. Moreover, an adhesive member is attached in the vicinity of both edges in the folding direction.

  According to the present invention, since the absorbent article is formed in a bellows shape having a peak portion and a valley portion, the absorbent body is three-dimensionally condensed in various parts of the absorbent article, and the specific pinpoint from which the body fluid is discharged The absorption rate in the area is improved. Therefore, in order to demonstrate a quick and sufficient absorption performance in the body fluid discharge area, other areas are less likely to get wet, and the user can feel a smooth feeling without feeling uncomfortable due to wetness. . In addition, by forming a bellows shape, it becomes a labyrinth structure in which peaks and troughs are located alternately, and it also functions as a stopper to prevent lateral leakage, so the discharged body fluid is in the peaks and valleys It can diffuse along and prevent lateral leakage due to insufficient absorption. Therefore, three-dimensional absorption is possible from the conventional planar absorption, and the absorption performance is improved.

  Furthermore, it is formed in a bellows shape, and the peaks and valleys can be expanded, so the adhesiveness to the local area is high, and leakage due to gaps caused by insufficient attachment to the local area is caused. In addition to being able to prevent it effectively, it is possible to give a stable feeling of use and a sense of security that it hits the user firmly.

  When using a liquid-permeable back sheet, when the amount of absorbed body fluid is large, the body fluid can be absorbed through the liquid-permeable back sheet into a urine pad or paper diaper fitted with an absorbent article. It is possible to cope with a large amount of body fluid. On the other hand, when a liquid-impermeable back sheet is used, it is possible to replace only the absorbent article without replacing the urine removing pad and the paper diaper, and the urine absorbing pad and the paper diaper can be used repeatedly.

The top view which shows 1st Embodiment of an absorbent article. The perspective view of FIG. The AA expanded sectional view of FIG. The BB expanded sectional view of FIG. The top view of an absorptive base material. CC sectional drawing of FIG. The top view which shows 2nd Embodiment of an absorbent article. The perspective view of FIG. The top view which shows 3rd Embodiment of an absorbent article. The perspective view of FIG. The perspective view which shows a use condition. The perspective view which shows a use condition. FIG. 13 is a cross-sectional view of the center part of FIG. 12.

Hereinafter, an embodiment of an absorptive article concerning the present invention is described based on a drawing. FIG. 5 is a plan view of an absorbent base material 2 which is a base material constituting the absorbent article 1 according to the present invention, and FIG. 6 is a cross-sectional view taken along the line CC in FIG. In FIG, 3 is a liquid-permeable topsheet, and a spunbonded nonwoven fabric or air-through nonwoven fabric having a hydrophilic basis weight ^{17g / m 2 ~22g / m 2} . 4 is a liquid-permeable back sheet, and a spunbonded nonwoven fabric or air-through nonwoven fabric having water repellency or hydrophilicity of the basis weight of ^{17g / m 2 ~22g / m 2} . In addition, it can replace with the liquid-permeable back sheet 4, and a liquid-impermeable back sheet (4a) can also be used. Reference numeral 5 denotes an absorber, which is composed of pulverized pulp, a highly water-absorbing resin, or the like, and can be selected to have an appropriate basis weight depending on the purpose of use.

  As shown in the figure, an absorbent body 5 having a predetermined thickness is placed on a rectangular liquid-permeable back sheet 4 so as to be accommodated in the liquid-permeable back sheet 4, and the liquid-permeable back sheet is placed thereon. The absorbent body 5 is interposed between the liquid-permeable top sheet 3 and the liquid-permeable back sheet 4 by covering the liquid-permeable top sheet 3 having the same shape as 4 and fixing them together by means such as heat sealing. A rectangular absorbent base material 2 is formed. Therefore, edges 2a, 2b, 2c, and 2d in which the absorbent body 5 is not interposed are formed on the outer periphery of the absorbent base material 2.

  The longitudinal direction of the absorbent base material 2 is the folding direction L, and the folding width dimension is substantially uniform along the mountain fold line Y and the valley fold line T in the direction W (width direction) orthogonal to the folding direction L (longitudinal direction). The ridges 1a and the valleys 1b (see FIG. 3) are formed so as to be loosely connected to each other. As the folding width, the interval YY between the mountain fold line Y and the mountain fold line Y (interval TT between the valley fold line T and the valley fold line T) is about 14 mm to 40 mm, that is, the height dimension of the peak 1a (the valley 1b The depth dimension is suitably about 7 mm to 20 mm. In addition, the number of peak portions 1a (the number of valley portions 1b) is preferably about 6 to 10, particularly about 8, and the absorbent article 1 as a whole has a crotch of a urine collection pad 11 or the like (see FIG. 11). It is preferable that the width W1 that fits in the portion is about 20 cm and the length L1 is about 10 cm (see FIG. 1). The peaks 1a and the valleys 1b may be loosely connected to each other, and both ends may be formed in the peaks 1a as shown in FIG. 3, or both ends may be formed as valleys 1b. Alternatively, one end can be formed as a peak 1a and the other end as a valley 1b.

  And both the edge parts of the width direction W which is a direction orthogonal to the folding direction L are each fixed. As the fixing means, appropriate means such as use of an adhesive such as a hot melt adhesive, heat sealing, or a fixing means using ultrasonic waves can be adopted. Furthermore, it can also bind using the paper-made binding string and binding ring which have water resistance. In addition, it may replace with both edge parts 2c and 2d, and you may make it fix the center part and other arbitrary places in which the absorber 5 of the absorptive base material 2 folded in the shape of a bellows is interposed.

  Moreover, the adhesive tape 6 is attached to the edge parts 2a and 2b located near the both edge parts of the folding direction L of the absorbent base material 2 as an adhesive member. In the illustrated example, the adhesive tape 6 is attached to the liquid-permeable back sheet 4, but it may be attached to the liquid-permeable top sheet 3, and the portions located at both edges when folded in a bellows shape. It is preferable to attach to. The adhesive tape 6 is for fixing the absorbent article 1 to a paper diaper or the like when the absorbent article 1 is used, and the number and size are not particularly limited. In the illustrated example, one adhesive tape 6 is attached to the center of each of the edges 2a and 2b. However, the number may be two or more, or may extend over the entire area of the edges 2a and 2b. The adhesive member is not limited to the adhesive tape, and any appropriate material having a hook-and-loop fastener or other adhesive action can be used.

  FIG. 1 is a plan view showing a first embodiment of an absorbent article 1 according to the present invention, FIG. 2 is a perspective view of FIG. 1, FIG. 3 is an enlarged cross-sectional view of FIG. -B is an enlarged sectional view. In the first embodiment shown in the figure, both edge portions 2c, 2d in the direction W orthogonal to the folding direction L are fixed by the fixing portion 7 while being held apart from each other while holding the bellows shape. In addition, the peak part 1a and the trough part 1b in which the absorber 5 interposes are loosely mutually connected, and are comprised so that expansion | swelling is mutually possible.

  FIG. 7 is a plan view showing a second embodiment of the absorbent article 1, and FIG. 8 is a perspective view of FIG. In the second embodiment shown in the figure, both edge portions 2c and 2d in the direction W orthogonal to the folding direction L are held in close contact with each other and fixed by the fixing portion 7. Therefore, the peak portion 1a and the valley portion 1b in which the absorber 5 is interposed are also in close contact with each other and are configured to be able to expand each other. Therefore, since it can form in a hemisphere by expanding the peak part 1a and the trough part 1b of the absorbent article 1 in the state where both edge parts 2c and 2d are in close contact with each other, the local part, particularly the male part is surrounded. Therefore, it is possible to give a sense of security that it is easy to follow the local area, and that it has a stable feeling of use and is firmly hitting the user.

  FIG. 9 is a plan view showing a third embodiment of the absorbent article 1, and FIG. 10 is a perspective view of FIG. In the third embodiment shown in the figure, one of the edge portions 2c and 2d in the direction W orthogonal to the folding direction L is separated from one edge portion 2c, and the other edge portion 2d is in close contact with each other. 7 is fixed. Therefore, the crest 1a and the trough 1b in which the absorber 5 is interposed are loosely connected to each other on the one edge 2c side and are in close contact with each other on the other edge 2d side. In addition, it is possible to expand the peak part 1a and the trough part 1b similarly to 1st Embodiment.

  The absorbent article 1 having the above-described configuration can be used by being installed on a crotch portion of a urine removing pad inserted in a disposable paper diaper or directly on a crotch portion of a disposable paper diaper, and can be used in an outer such as underwear. It can be used for various purposes as absorbent articles such as absorbent pads, urine absorbing pads, and incontinence pads that are used by insertion. As an example, a usage method in which the absorbent article 1 according to the first embodiment shown in FIGS. 1 to 4 is installed in the crotch portion of the urine absorbing pad 11 will be described with reference to FIG.

  As shown in FIG. 11, the absorbent article 1 is installed at the crotch portion so that the peak portions 1 a and the valley portions 1 b are parallel to the longitudinal direction L <b> 2 of the urine collecting pad 11. At this time, since the absorbent article 1 can be fixed to the crotch portion of the urine collecting pad 11 by fixing the adhesive tape 6 to an appropriate standing piece of the urine collecting pad 11, for example, the three-dimensional gather portion 11 a, the adhesive tape 6 may be displaced. Absent. In this state, the urine collecting pad 11 is attached to a disposable paper diaper or the like. At the time of use, the peak part 1a and the valley part 1b of the absorbent article 1 are expanded and used so as to enclose the user's local part.

  Next, the usage method which installed the absorbent article 1 concerning 1st Embodiment in the crotch part of the disposable paper diaper 12 directly is demonstrated based on FIG. 12, FIG. As shown in FIGS. 12 and 13, the absorbent article 1 is installed at the crotch portion so that the peak portions 1 a and the valley portions 1 b are parallel to the longitudinal direction L <b> 3 of the disposable paper diaper 12. At this time, the absorbent article 1 can be fixed to the crotch portion of the disposable paper diaper 12 by appropriately raising the crotch portion of the disposable paper diaper 12 and fixing the adhesive tape 6, so that it does not shift (not shown). In this state, the disposable diaper 12 is used. At the time of use, the peak part 1a and the valley part 1b of the absorbent article 1 are expanded and used so as to enclose the user's local part.

  In order to confirm the absorbent capacity of the absorbent article 1 according to the present invention, the absorbent base material 2 constituting the absorbent article 1 and the absorbent article 1 according to the first embodiment have a 0.9% concentration. An experiment was conducted to absorb 300 cc of physiological saline. In the experiment, an aluminum plate with a hole of 54 mm in diameter was placed on each of the absorbent base material 2 and the peak portion 1a of the absorbent article 1, and physiological saline was filled so that the holes in the aluminum plate were constantly filled with physiological saline. Water was continuously dripped, and the time when the physiological saline absorption was completed was measured. In the absorbent base material 2, the time for absorbing 300 cc of physiological saline was 1 minute 54 seconds, whereas in the absorbent article 1, it was 27 seconds. From this, it can be seen that the absorption speed in the area where the body fluid is discharged is improved by forming a three-dimensional bellows shape having the peak portion 1a and the valley portion 1b.

  According to the present invention, since the absorbent article is formed in a bellows shape having a peak portion and a valley portion, the absorbent body is three-dimensionally condensed in various parts of the absorbent article, and the specific pinpoint from which the body fluid is discharged The absorption rate in the area is improved. Therefore, in order to demonstrate a quick and sufficient absorption performance in the body fluid discharge area, other areas are less likely to get wet, and the user can feel a smooth feeling without feeling uncomfortable due to wetness. . In addition, by forming a bellows shape, it becomes a labyrinth structure in which peaks and troughs are located alternately, and it also functions as a stopper to prevent lateral leakage, so the discharged body fluid is in the peaks and valleys It can diffuse along and prevent lateral leakage due to insufficient absorption. Therefore, three-dimensional absorption is possible from the conventional planar absorption, and the absorption performance is improved.

  Furthermore, it is formed in a bellows shape, and the peaks and valleys can be expanded, so the adhesiveness to the local area is high, and leakage due to gaps caused by insufficient attachment to the local area is caused. In addition to being able to prevent it effectively, it is possible to give a stable feeling of use and a sense of security that it hits the user firmly.

  When using a liquid-permeable back sheet, when the amount of absorbed body fluid is large, the body fluid can be absorbed through the liquid-permeable back sheet into a urine pad or paper diaper fitted with an absorbent article. It is possible to cope with a large amount of body fluid. On the other hand, when a liquid-impermeable back sheet is used, it is possible to replace only the absorbent article without replacing the urine removing pad and the paper diaper, and the urine absorbing pad and the paper diaper can be used repeatedly.

DESCRIPTION OF SYMBOLS 1 ... Absorbent article 1a ... Mountain part 1b ... Valley part 2 ... Absorbent base material 2a, 2b, 2c, 2d ... Edge part 3 ... Liquid-permeable top sheet 4 ... Liquid-permeable back sheet 4a ... Liquid-impermeable back Sheet 5 ... Absorber 6 ... Adhesive tape 7 ... Fixed part 11 ... Urine collecting pad 12 ... Disposable disposable diaper Y ... Mountain fold line T ... Valley fold line

Claims (11)

  A rectangular absorbent base material in which an absorbent body is interposed between a liquid-permeable top sheet and a liquid-permeable back sheet or a liquid-impervious back sheet is folded in a bellows shape and fixed. Absorbent article characterized by forming a part and a valley part.   The absorbent article according to claim 1, wherein the absorbent base material is folded into a bellows shape with a substantially uniform width.   The absorptive article according to claim 1 or 2 which enabled expansion of a peak part and a trough part.   The absorbent article according to claim 1, 2, or 3, wherein both edges in a direction orthogonal to the folding direction are fixed while holding a bellows shape.   The absorbent article according to claim 4, wherein both edges in a direction orthogonal to the folding direction are fixed in a state of being separated from each other while holding the bellows shape.   The absorbent article according to claim 5, wherein the crest and the trough are loosely connected to each other.   The absorbent article according to claim 4, wherein both edge portions in a direction orthogonal to the folding direction are fixed in a state where they are in close contact with each other while holding the bellows shape.   The absorptive article according to claim 7 which makes a peak part and a valley part close mutually.   The absorbent article according to claim 4, wherein one of the edges in the direction orthogonal to the folding direction is in close contact and the other is spaced apart.   The absorbent article according to claim 9, wherein, in a direction orthogonal to the folding direction, a peak portion and a valley portion on one side are brought into close contact with each other, and the other side is loosely contacted.   The absorbent article according to claim 1, 2, 3, 4, 5, 6, 7, 8, 9 or 10, wherein an adhesive member is provided in the vicinity of both edges in the folding direction.

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