JP4878603B2 - Absorbent articles - Google Patents

Description

  The present invention relates to an absorbent article.

  Conventionally, as an absorbent article for infants or adults such as the elderly and disabled persons, a urine pad provided with a top sheet, a back sheet, and an absorbent body interposed between a part of both sheets, Pads for watery stools are known.

  The above-mentioned urine pads and the like are arranged such that the liquid-permeable sheet is disposed on the skin side of the wearer as the top sheet, and the non-liquid-permeable sheet is disposed on the side opposite to the wearer's skin as the back sheet. In general, the absorber is generally arranged so as to be sandwiched between both sheets. In the conventional absorbent article having such a configuration, body fluid or excrement such as urine and watery stool is passed from the above-mentioned liquid-permeable sheet side, and is absorbed and held by the absorbent body, and has excellent leakage prevention properties. The non-passing liquid sheet prevents the excrement from leaking to the outside.

  However, in such a conventional absorbent article, the size of the wearer's body, the place / degree of paralysis, the presence or absence of contracture, etc. are not in accordance with each person's wearing state, and excrement leakage prevention, or In terms of prevention of skin trouble, etc., sufficient measures have not been taken, which has been a problem.

  In other words, each wearer has different conditions such as body size, place / degree of paralysis, presence / absence of contracture, etc., so in a uniform product such as a conventional absorbent article, leakage of excrement etc. It is difficult to prevent, for example, individual (one by one) wearer when urine leaks through the body through narrowed legs and gaps, or leaks from the same place to always sleep the same sideways It was not possible to adequately cope with the usage environment (symptoms) that could occur.

  By the way, as one of the conventional absorbent articles, there is an auxiliary absorbent body that can be used even if it is folded, rolled, or sandwiched, for example, according to the wearer's body. In this auxiliary absorbent body, both front and back are composed of liquid-permeable sheets, so it can absorb excrement such as urine and watery stool, both front and back, even if it is folded, rolled or sandwiched Is.

  However, in this auxiliary absorber, excretions such as urine and feces that have been absorbed once escape from the surface opposite to the skin contact surface, and therefore cannot be used alone, and must be separated from another urine pad or tape type. It is necessary to use with diapers. Therefore, when exchanging diapers after excretion, it is necessary to replace not only the auxiliary absorbent body but also the outer urine pad or the tape-type diaper. Due to increased caregiver replacement effort and increased amount of trash to be discarded, it has become inconvenient.

  There is the following Patent Document 1 for such a problem.

  Patent Document 1 discloses a disposable auxiliary pad in which a top sheet, an absorbent body, and a liquid-impervious back sheet are laminated, and is detachably bonded to a fiber group on the outer surface of the back sheet. A hook-and-loop fastener is provided, and the auxiliary pad is attached to the diaper by the hook-and-loop fastener in the vicinity of a portion from which the wearer's urine is discharged, thereby absorbing urine during urination.

  Here, the gap that can occur in each wearer is not uniformly flat between the wearer's skin and the diaper, but depends on the wearer's body shape and usage environment (situation). In addition, it is complicated (and moreover, three-dimensional), and in addition, the leakage of excrement that can occur from such a gap is also complicated. Therefore, the structure of the absorbent body arranged between the top sheet and the back sheet as in the auxiliary pad of Patent Document 1 can absorb only from one side of the top sheet side, and thus occurs from gaps that can be complicated individually. It is not possible to prevent the leakage of excrement. In particular, since the method of attaching the auxiliary pad to the diaper of Patent Document 1 is performed using a fastener, it is considered that the auxiliary pad is basically laminated in a flat manner on the outer side. The technical idea of deforming and mounting has not been revealed, and the auxiliary pad having such a configuration is not a sufficient solution to the above-described problem.

  Thus, at present, by holding the absorbent body on both surfaces of the non-liquid-permeable sheet, urine can be absorbed from both the front and back surfaces, and the absorbed urine can be absorbed and retained without escaping to the opposite surface. Absorbent articles that can be prevented from leaking by being bent or deformed according to the body shape and use symptoms are not disclosed, and such absorbent articles are highly desired.

JP-A-9-276312

  The present invention was made in order to solve such a problem of the prior art, and by holding the absorbent body on both sides of the non-liquid-permeable sheet, urine can be absorbed and absorbed from both the front and back sides. The present invention provides an absorbent article that can absorb and hold urine without falling to the opposite surface, can be used according to the wearer's body shape and symptoms of use, and can prevent skin troubles. Furthermore, the absorbent article which can be bent and deformed is provided.

  As a result of intensive studies to solve the problems of the prior art as described above, the present inventors have provided a non-liquid-permeable sheet and an absorbent body disposed on both surfaces of the non-liquid-permeable sheet, Or the absorbent article used for excrement absorption was devised. Therefore, the absorber is configured to be able to absorb the body fluid or excrement of the wearer, and the non-liquid-permeable sheet prevents the absorbed body fluid or excrement from penetrating to the other absorber. The present invention has been completed by conceiving that the above-mentioned problems can be solved by configuring as a leakage sheet. Specifically, the following absorbent articles are provided by the present invention.

[1] An absorbent article used for absorbing bodily fluids or excrement, comprising at least a non-liquid-permeable sheet and an absorber disposed on both surfaces of the non-liquid-permeable sheet, It is configured to be able to absorb the body fluid or excrement of the wearer, and the non-liquid-permeable sheet is configured as a leak-proof sheet that prevents the absorbed body fluid or excretion from penetrating to the other absorber. Absorbent article.

[2] The absorbent body includes a first absorbent body disposed on one surface of the non-liquid-permeable sheet and a second absorbent body disposed on the other surface of the non-liquid-permeable sheet. The absorbent article according to [1], wherein the first absorbent body and the second absorbent body have different absorption performance.

[3] The absorbent article according to [1] or [2], wherein the non-liquid-permeable sheet is moisture-permeable.

[4] The absorbent article according to any one of [1] to [3], wherein the absorbent body is covered with a liquid-permeable sheet.

[5] The absorbent article according to any one of [1] to [4], wherein the absorbent article is formed to be bendable or deformable.

[6] The absorbent article according to any one of [1] to [5], wherein the absorbent article is formed in a bellows shape so that the absorbent article can be bent or deformed.

[7] The absorbent article according to any one of [1] to [6], wherein the entire absorbent body is formed to have an uneven shape.

[8] The absorbent article according to any one of [7], wherein the uneven shape is formed by arranging a plurality of the absorbers.

  The absorbent article of the present invention can absorb urine or watery stool from both the front and back surfaces by holding the absorbent body on both sides of the non-liquid-permeable sheet, and the absorbed urine or watery stool passes through the opposite surface. It can be absorbed and held in the absorbent body without slipping out (cannot be pulled out) and can be used by folding or bending, thus effectively preventing leakage according to the wearer's body shape and usage conditions (symptoms) It will be.

  Hereinafter, the best mode for carrying out the absorbent article of the present invention will be specifically described. However, the present invention broadly encompasses absorbent articles having the invention specific items, and is not limited to the following embodiments.

[1] Configuration of the absorbent article of the present invention:
As shown in FIGS. 1 and 2, the absorbent article of the present invention is an absorbent article 1 used for absorbing bodily fluids or excreta. The non-liquid-permeable sheet 3 and the absorbent body 5 disposed on both surfaces of the non-liquid-permeable sheet 3 are provided. The absorbent body 5 is configured to be able to absorb the body fluid or excrement of the wearer, and the non-liquid-permeable sheet 3 prevents the absorbed body fluid or excrement from permeating the other absorbent body 5. In other words, it is configured as a leakproof sheet.

[1-1] Absorber:
The absorber in this embodiment is a member for absorbing and holding excrement such as body fluid or urine of the wearer (wearer). The absorber is made of an absorbent material because it needs to hold the wearer's urine and body fluid.

  An absorber is arrange | positioned at both surfaces of a non-liquid-permeable sheet. That is, as shown in FIGS. 1 and 2, it is disposed on both the upper surface 3 a (front side) of the non-liquid-permeable sheet 3 and the lower surface 3 b (back side) of the non-liquid-permeable sheet 3. The absorbent body is arranged on both sides of the non-liquid-permeable sheet in this manner so that urine or watery stool can be absorbed from both the front and back sides, and can be used according to the wearer's body shape and use conditions (symptoms). This is because of doing so. As mentioned above, each user (wearer) has different symptoms / states such as body size, location / degree of paralysis, presence / absence of contracture, etc. For such products, it is difficult to prevent leakage of excreta such as body fluids, urine or feces. For example, in order for urine to leak through the body through one's left and right, because the leg is paralyzed due to paralysis, or to sleep sideways with the same side down, It may leak from the same place. In such a case, the conventional uniform absorbent article cannot cope with a non-uniform gap or the like that can be made according to the wearer's body shape, use situation (symptom), or the use situation. However, in the absorbent article of the present embodiment, the absorbent body is arranged on the front side and the back side with a non-permeable sheet interposed therebetween, so that images that can be formed according to the wearer's body shape and use conditions (symptoms). Since it can respond widely to unclear gaps and the environment / situation that it wants to use, the effects of the present application can be achieved.

  Here, (1) an absorber composed of one layer does not pass through the absorber “disposed on both the upper surface (front side) of the non-liquid-permeable sheet and the lower surface (back side) of the non-liquid-permeable sheet”. It is not limited to those disposed on both sides of the liquid sheet, (2) one absorber composed of a plurality of layers is disposed on each, and (3) the absorber composed of a single layer is on the front side (or back side). In addition to the multi-layered absorbent body disposed on the back side (or front side), (4) one integrally formed absorbent body disposed on each side, and (5) multiple Are widely included, such as those disposed on the upper surface (front side) and the lower surface (back side).

  Moreover, the upper surface (front side) or the lower surface (back side) is for convenience of explanation, and does not limit the method of using the absorbent article of the present embodiment. For example, in the absorbent article 1 shown in FIG. 2, the upper surface 3a side of the non-liquid-permeable sheet 3 is located on the upper surface with reference to FIG. 3 may be used such that the upper surface 3a is the lower surface and the lower surface 3b side of the non-liquid-permeable sheet 3 is the upper surface.

  Examples of the absorbent material constituting the absorber include conventionally known absorbent materials usually used for disposable diapers and other absorbent articles, such as fluff pulp, super absorbent polymer (hereinafter referred to as “SAP”). And 3) to 60% by mass of a heat-fusible substance with respect to fluff pulp.

  As the fluff pulp, it is preferable to use wood pulp or non-wood pulp defibrated in the form of cotton, and as the hydrophilic sheet, tissue, absorbent paper, or a non-woven fabric subjected to hydrophilic treatment is used.

As a raw material for fluff pulp, hardwood, straw, bamboo, kenaf and the like can be used in addition to conifers. Moreover, although the usage-amount of a pulp changes with whether it is used independently, for example, using it individually, using multiple lamination | stacking, or using another absorber together with the target absorber, generally 50-400g. / M ² .

  Examples of the superabsorbent polymer that can be used in the absorber include starch-based, cellulose-based, and synthetic polymer-based polymers. Namely, starch-acrylic acid (salt) graft copolymer, saponified product of starch-ethyl acrylate graft copolymer, saponified product of starch-methyl methacrylate graft copolymer, saponified product of starch-acrylonitrile graft copolymer Saponified starch-acrylamide graft copolymer, acrylic acid (salt) polymer, polyethylene oxide cross-linked with acrylic acid, cross-linked product of sodium carboxymethyl cellulose, cross-linked product of polyvinyl alcohol-maleic anhydride reactant, etc. Although it can absorb urine, body fluid and water more than 20 times its own weight, sodium polyacrylate is most suitable from the viewpoint of absorption performance.

  The blending amount of the superabsorbent polymer is 10 to 500% by mass, preferably 15 to 300% by mass with respect to the amount of the cotton-like pulp, and the superabsorbent polymer in such an amount is substantially uniformly in the cotton-like pulp. When distributed, when the superabsorbent polymer absorbs liquid and swells, the particles have minimal interference with each other and are less likely to come into continuous contact and form a permeation barrier. Can be transmitted and absorbed well in the three-dimensional direction.

  Moreover, as a heat-fusible substance that can be used for the absorber, a fibrous material is preferable in consideration of mixing with fluff pulp. Examples of the heat-fusible substance include polypropylene, polyethylene, polyester, polyvinylidene, acrylic resin, and nylon resin. Or the composite fiber etc. which consist of 2 or more components, such as polyester, a polypropylene, polyethylene, etc. may be sufficient, and the composite fiber of low melting | fusing point polyester / polyester, polyester / polyethylene, polypropylene / polyethylene is especially preferable from the surface of intensity | strength. A fineness of about 1 to 5 denier is preferable, and a fiber length of 3 to 30 mm is suitable for mixing with cotton-like pulp, but is not particularly limited.

  By mixing these with fluff pulp and thermocompression bonding at a constant pressure, a skeletal structure with a heat-fusible substance is formed, and the fluff pulp layer itself can have strength even when wet. The method of thermocompression bonding can be performed by a hot press roll, a hot air dryer, a microwave heater, an infrared heater or the like, but is not particularly limited, and heat is uniformly transmitted to the mat layer, so that heat fusion is possible. Any material that melts and can form a skeleton structure may be used.

  As a method for producing the absorbent body by compressing the fluff pulp or the like, a continuous surface shape is formed so that the density of the absorbent body is substantially uniform over the whole by a roll having a smooth peripheral surface. The compression method is such that the density of the absorbent body is partially different depending on the roll or the like having a concavo-convex circumferential surface, and embossment of a pattern arrangement that guides urine and body fluid in the longitudinal direction and the oblique direction is formed It may be. In the case of embossing, the compression part and the non-compression part may be either continuous or discontinuous.

  In the absorber of this embodiment, you may utilize a commercially available sheet-like absorber. For example, a sheet-like absorbent body (trade name: TDS nonwoven fabric, manufactured by Oji Kinocross Co., Ltd.) in which a sheeted SAP is incorporated in a pulp mat molded by the airlaid method, and an SAP in the middle layer of the pulp mat molded by the airlaid method A sheet-like absorber (trade name: B-SAP, manufactured by Oji Kinocross Co., Ltd.), a sheet-form absorber in which SAP particles are uniformly dispersed in a pulp mat (trade name: Novacin, manufactured by Leonia), and SAP. Examples thereof include a water-absorbent composite (see Japanese Patent No. 3196933) fixed to a nonwoven fabric with fine cellulose fibers and an adhesive.

  Although there is no restriction | limiting in particular as a shape of an absorber, The shape used in the conventional disposable diaper and another absorbent article, for example, a rectangular shape, an hourglass type, a gourd type, a T shape etc. can be mentioned.

  Further, the absorbent body is composed of a first absorbent body disposed on one surface of a non-liquid-permeable sheet described later and a second absorbent body disposed on the other surface of the non-liquid-permeable sheet, It is preferable to provide a difference in absorption performance between the first absorber and the second absorber. Here, the absorption performance refers to an allowable amount that the absorber can absorb urine and watery stool, or a speed at which the absorber absorbs urine and watery stool, or both. In this way, by providing a difference in the absorption performance of the absorber to be disposed, only the surface side to be used is firmly absorbed, while the surface opposite to the surface is mainly used when folded and used. It is preferable because it can complement and absorb body fluids and excreta that could not be absorbed on the surface side.

  Examples of a method for providing a difference in absorption performance include changing the type, blending ratio, and blending amount of the absorbent material.

  Furthermore, it is more preferable that the thickness of the first absorber is formed so as to be thicker than that of the second absorber. As a method of providing a difference in the absorption performance of the absorber, as described above, it is also one method that the material of the arranged absorber is made of different materials. However, if absorbers with the same type and composition of absorbent material and different thicknesses are arranged, the number of parts will not increase, production efficiency will not decrease, and production cost will increase compared to the method described above. It is more preferable because it can be avoided. In other words, by adjusting the absorption rate by changing the thickness of each absorber, only the surface side that wants to ensure the absorbency is firmly secured, while the surface opposite to that surface when folded and used Is more preferable because it can complement and absorb bodily fluids and excreta that could not be absorbed on the aforementioned surface side. Furthermore, by providing a difference in the thickness of the first absorbent body and the second absorbent body as described above, it can be molded as an appropriate thickness without becoming too thick as a whole, and it is easy to use and has excellent usability. Since it can comprise as an absorbent article, it is more preferable. For example, what is arrange | positioned with thickness difference like the absorbers 5c and 5d in the absorbent article 21 shown by FIG. 3 is mentioned.

  Moreover, it is preferable that the absorber is coat | covered with the below-mentioned liquid-permeable sheet. That is, it is preferable that the absorbent body is configured to be wrapped by the liquid-permeable sheet because the absorbent body can be held on both surfaces of the non-liquid-permeable sheet without impairing the absorption function of the body fluid or excrement of the absorbent body. For example, an absorbent body made of SAP or the like has an advantage that SAP or the like can be prevented from leaking from the absorbent body by being covered with a liquid-permeable sheet. Specifically, as shown in FIG. 2, in this embodiment, the absorbent body is disposed at least on the upper surface and the lower surface of the non-liquid-permeable sheet, but includes the absorbent body disposed on the upper surface and the lower surface. It is preferable that it is covered.

  Moreover, it is preferable that the absorber is easily formed by bending or deformation. By being easily bent or deformed, the absorbent article as a whole can be easily folded or deformed, and can be applied to the body according to the body shape and symptoms of the user.

  Furthermore, it is more preferable that the absorbent body is formed in a bellows shape so as to be easily bent or deformed. It is preferable that the absorbent body is easily bent or deformed into a bellows shape so that it can be applied to the body according to the body shape and symptoms of the user.

As a method for forming the absorbent body so as to be easily bent or deformed, the mass per unit area (so-called basis weight) of the absorbent body is preferably set within a predetermined range. Specifically, it is preferable that it is in the range of 50 to 500 g / m ^{2 in} total for the front and back surfaces.

  Moreover, as a method of forming the absorber easily to be bent or deformed, it is preferable that the absorber is formed so as to have an uneven shape. Specifically, when a plurality of concave and convex shapes are provided on the entire absorbent body or a mold is formed by embossing or the like, it is easy to bend or deform, and can reach a desired region. For example, the absorbent article shown by FIG. 4A and 4B is mentioned. Here, FIG. 4A is a plan view showing another embodiment of the absorbent article of the present invention, and is a diagram schematically showing the absorbent article provided with the entire absorbent body provided with an uneven shape by embossing. 4B is a cross-sectional view schematically showing a state in which the plan view of FIG. 4A is cut along the line BB ′ shown in FIG. 4A. As shown in FIGS. 4A and 4B, the absorbent body 5e is provided with a plurality of recesses 6a and disposed on one surface (upper surface) of the non-liquid-permeable sheet 7, and the other absorbent body 5 is formed into a smooth sheet. If it forms and arrange | positions in this, the absorber 5e arrange | positioned on the upper surface of the non-liquid-permeable sheet | seat 7 will become easy to bend or deform | transform, and the other absorber 5 can leave the moderate degree of waist | hip | lumbar. Therefore, it is possible to easily perform bending or deformation according to the wear location of the wearer.

  In addition, when providing uneven | corrugated shape to the whole absorber by embossing, since a comparatively various shape can be provided, it is not restricted to the above-mentioned planar view lattice shape (FIG. 4A). For example, the embossing process is given only in the width direction orthogonal to the BB ′ line shown in FIG. 4A, or the embossing process is given in the length direction parallel to the BB ′ line shown in FIG. 4A. Depending on the shape of the object, the entire absorber may be provided with an uneven shape. However, the shape that is easy to use is more preferably a lattice shape as described above.

  Further, in FIG. 4B, only the absorber disposed on the upper surface of the non-liquid-permeable sheet 7 is provided with a plurality of concave and convex shapes, but is not limited to this, for example, the lower surface of the non-liquid-permeable sheet 7 A plurality of concave and convex shapes may be provided on the absorbent body arranged on the liquid crystal, or a plurality of concave and convex shapes may be provided on each of the absorbent bodies arranged on both surfaces of the liquid-impermeable sheet 7. This is because by adopting such a configuration, it is possible to cope with the wearer's use state and use environment.

  In addition, as a method for easily forming the absorbent body by bending or deforming, an absorbent article in which the uneven shape formed by the absorbent body is formed by arranging a plurality of absorbent bodies is also one of the preferred embodiments. For example, as shown in FIGS. 5A and 5B, an absorbent article in which a plurality of absorbent bodies 5 f are arranged on both surfaces of the non-liquid-permeable sheet 3 and a concave portion 6 b is formed. Here, FIG. 5A is a plan view showing another embodiment of the absorbent article of the present invention, schematically showing a state in which the entire absorbent body is formed in an uneven shape, and FIG. It is sectional drawing which showed typically the state which cut | disconnected the top view of 5A along CC 'line shown by FIG. 5A, Comprising: FIG. 4A and 4B and another form are shown. As shown in FIGS. 5A and 5B, when a plurality of absorbers 5f are arranged on both surfaces of the liquid-impermeable sheet 3, a portion where the absorber 5f is arranged and a portion where the absorber 5f is not arranged are aligned. A recess 6b is formed, and it is easy to bend or deform along the recess 6b. Therefore, it is possible to easily perform bending or deformation according to the wear location of the wearer, and it is possible to cope with the wearer's use state and use environment.

  5A and 5B, the absorbent body 5f is disposed on both surfaces of the non-liquid-permeable sheet 7. However, the configuration is not limited to this, and for example, the absorbent body 5f is disposed on one surface of the non-liquid-permeable sheet. However, the absorber 5 shown in FIG. 5B may be disposed and formed on another surface.

[1-2] Non-liquid-permeable sheet:
As shown in FIGS. 1 and 2, the non-liquid-permeable sheet 3 in the absorbent article of the present invention is a non-liquid-permeable sheet-like member disposed between at least two absorbent bodies 5. . The non-liquid-permeable sheet 3 is configured as a leak-proof sheet that prevents the absorbed body fluid or excrement from being transmitted to the other absorber by the above-described absorber 5. That is, when the liquid-impervious sheet 3 is disposed between the aforementioned absorbent bodies 5, for example, when the absorbent body 5a (5b) disposed on one surface absorbs bodily fluid or excrement, the absorption is performed. It is possible to prevent permeated body fluid or excrement from passing through the absorber 5b (5a) disposed on the other side. In other words, it plays a role as a leak-proof sheet.

  1 and 2, the non-liquid-permeable sheet 3 is disposed on the side flap 11b and the end flap 9 formed in the width direction of the absorbent article 1, but is not disposed on the side flap 11a.

  In addition, when the liquid-impervious sheet is configured as described above, when the absorbent article of the present embodiment is used in combination with the urine pad or the tape-type diaper as the outer, Excrements such as body fluids and urine do not bleed into the urine pad or tape diaper. Therefore, since it is not necessary to replace these outer urine pads or tape-type diapers, the burden associated with replacement of the wearer or caregiver can be reduced, and it is also economically advantageous and waste. Can also be reduced.

  A liquid-impermeable plastic film is used as the non-liquid-permeable sheet. For example, it can be formed from polyethylene, polypropylene, polyvinyl chloride, or similar materials, or materials such as films or sheets based on polyvinyl alcohol. The back sheet material may be transparent or opaque, and may be an embossed back surface. Furthermore, the liquid-impermeable plastic film should be a non-woven fabric, woven fabric, stretchable non-woven fabric made of a thermoplastic resin such as polyethylene, polypropylene, polyester, etc., which is bonded to the outer layer of the back sheet. You can also.

  Moreover, it is preferable that a liquid-impermeable sheet is moisture-permeable. When the non-liquid-permeable sheet is formed from a moisture-permeable material, moisture can be released to the outside while blocking excrement such as body fluids and urine, so that skin trouble can be avoided and the effects of the present invention can be achieved.

[1-3] Liquid-permeable sheet:
In the absorbent article of the present embodiment, the liquid-permeable sheet is preferably arranged so as to cover the absorbent body. Since the liquid-permeable sheet is disposed and formed, it is preferable because a comfortable feeling can be given to the touch.

  As shown in FIG. 2, the liquid-permeable sheet 7 is configured as a sheet-like member disposed on the surface side that comes into contact with the wearer's skin, and is disposed so as to cover the surface of the absorbent body 5 described above. The As the liquid-permeable sheet, a nonwoven fabric is usually used. In particular, a nonwoven fabric made of short fibers having a fineness of 6 denier or less is often used, and a nonwoven fabric made of synthetic fibers of polypropylene, polyethylene and polyester fibers is preferably used. In addition, a nonwoven fabric composed of a composite fiber of two or more components such as polyester, polypropylene and polyethylene may be used, and a composite fiber such as low melting point polyester / polyester, polyester / polyethylene, polypropylene / polyethylene is preferable from the viewpoint of strength, There are no restrictions.

Moreover, as a liquid-permeable sheet | seat, what was formed by heat embossing pressure-bonding what laminated | stacked at least 2 said short fiber nonwoven fabric can also be used. In this case, the area of each hot embossed crimping part is preferably 0.03 to 16 mm ² , and the area of the hot embossing crimping part in the area of the nonwoven fabric is preferably 6 to 26%. If the area of each heat embossing crimping portion is less than 0.03 mm ^2, the adhesive strength between the layered nonwoven fabric is weakened and becomes wider beyond 16 mm ^2, so that wearing comfort crimping portion is hard and inferior. Further, when the area of the hot embossed crimping portion occupying the area of the nonwoven fabric is less than 6%, the adhesive strength between the nonwoven fabrics is reduced, and when it exceeds 26%, the strength between the nonwoven fabrics is increased, but the texture is hard. The wear feeling becomes inferior.

  The heat embossing pressure-bonding treatment of the laminated nonwoven fabric as described above is a heating pressure-bonding roll comprising an embossing roll having irregularities and a smooth roll having a smooth surface that is paired with the embossing roll, or a heating comprising an embossing roll having a pair of irregularities. It can be performed by a pressure roll.

Liquid permeability sheet is preferably a basis weight of the laminated nonwoven fabric is 12~50g / ^{m 2,} and more preferably 15 to 30 g / ^{m 2.} When the basis weight is less than 12 g / m ^2, the strength of the surface sheet becomes weak, and the SAP used in the absorbent body easily falls off. On the other hand, if the basis weight exceeds 50 g / m ² , it becomes too thick, which is not preferable because the wear feeling is inferior and the liquid permeability is lowered.

  Since the nonwoven fabric made of synthetic fiber that forms the liquid-permeable sheet is usually hydrophobic, it is preferable that at least the uppermost layer that is in contact with the wearer's skin is subjected to a hydrophilic treatment. As a hydrophilic treatment method, a hydrophilic resin or a hydrophilizing agent is mixed or copolymerized with a resin for forming a nonwoven fabric to make it hydrophilic, and hydrophilic fine fibers such as pulp are used as a leach gas when forming a nonwoven fabric. Examples thereof include a method of hydrophilizing by containing a hydrophilic fiber in an ultrafine fiber, or a method of hydrophilizing by imparting or copolymerizing a hydrophilic agent after forming a nonwoven fabric.

  In addition, the nonwoven fabric used for the topsheet can be hydrophilized in addition to the uppermost layer, but only the uppermost layer is hydrophilized to make the other layers hydrophobic. By doing so, it is preferable because it is possible to form a surface sheet that is excellent in permeability of liquid such as urine and that prevents the liquid that has once permeated from returning.

  As the hydrophilic resin, polyethylene terephthalate copolymerized with polyalkylene glycol kneaded with alkylbenzene sulfonic acid soda, hydrophilic polyethylene, etc. can be used, and as the hydrophilizing agent, dialkyl sulfosuccinate is used. Nate-based hydrophilizing agents can be used.

[1-4] Other configurations of the absorbent article of the present embodiment:
The absorbent article of the present embodiment is preferably formed to be foldable or deformable. It is because it will be easy to use together with clothing or the diaper normally used if formed in this way. As mentioned above, diapers and other users have different sizes of body, location / degree of paralysis, presence / absence of contracture, etc., and it is often difficult to prevent leakage with uniform products. . In such a case, the gap that can be formed in the diaper and the like varies depending on the individual, and it is preferable that the gap can be folded, rounded, pinched, etc. It is. In addition, when using an absorbent article alone, it can be folded according to the usage conditions of each person, such as body size, location / degree of paralysis, presence / absence of contracture, etc. This is because it is possible to prevent leakage and improve usability when it can be bent, deformed, etc.

  For example, as in the absorbent article 31 shown in FIG. 6A, if it is formed to be bent in a bellows shape, it is easy to reach the crotch of the wearer in the supine state as shown in FIG. 6B. Leaks from gaps that are likely to occur in the vicinity can be reliably prevented. Therefore, the effect of the present application can be achieved.

  In addition, for example, as shown in FIG. 7B, when it is easy to bend or deform so as to warp at the center of the absorbent article as in the absorbent article 41 shown in FIG. 7A, as shown in FIG. 7B, Even for gaps that tend to occur from the base of the thigh to the waist 15, the absorbent article can be addressed appropriately and easily in accordance with the wearer's body shape and condition, so that the effect of the present application is achieved. Can do.

  Furthermore, when the absorbent article of the present embodiment is folded or rolled, it is more preferable that the bent or deformed state such as folding or rounding is stably maintained. When using this absorbent article alone, without using it together with diaper gaps, diapers, etc., the absorbent article may be folded or rounded so that it fits in the gap or part of the wearer's address. Even if it is possible, the excretion cannot be sufficiently absorbed if the shape is restored. In addition, for example, when a folded or rounded absorptive article is placed in the diaper gap or the wearer's crotch when lying down, the restoring force to return to the original is large (strong), There is also a risk of pressing the wearer's skin. Such compression is not preferable because it is uncomfortable even for a person whose skin is weak due to bed slipping or the like because it may cause further skin trouble. Therefore, it is preferable that the bent or deformed state is stably maintained.

  Moreover, it is one of the preferable forms that the absorbent article of this embodiment is suitable for use in combination with a diaper. Although the absorbent article of this embodiment can show the effect of this application independently, it can show the effect of this application not only using alone but using it together with a diaper.

  For example, when the absorbent article 51 shown in FIG. 8A is placed so as not to come into contact with the wearer's pressure ulcer (acupuncture) by reaching the location indicated by the arrow of the diaper 100 shown in FIG. Even if body fluid, urine or stool leaks from the buttocks side, it is preferable because the body fluid, urine or stool can be prevented from touching the pressure ulcer part.

  Here, pressure sores refer to bedsores, and these pressure ulcers are easily formed on sacral areas, heels, buttocks and roots of the back (area X in FIG. 8B), and in general, areas that require weight. In addition, it is very unhygienic to touch body fluid, urine, stool, etc., but according to the absorbent article of this embodiment, it is possible to avoid contact of body fluid, urine, stool, etc. with the pressure ulcer part. .

  In the above description, the tape type diaper is illustrated and described as an example of the diaper to be used together, but is not limited to the combined use with such a tape type diaper, and includes known diapers such as a pant type diaper. Is.

[2] How to use:
The absorbent article of the present embodiment is mainly used in (1) when not using a diaper or the like and using only the present embodiment. (2) In a diaper, that is, in a gap generated in a diaper worn by the wearer. In some cases, absorbent articles may be placed. However, it is not limited to such usage.

  When using only this embodiment without using together with a diaper etc., it uses as it is, or bend | folds or deform | transforms into a desired shape in the site | part which wants to wear. For example, in the supine position shown in FIG. 6B, it is used after being bent or deformed as shown in FIG. 6A, and in the lateral position shown in FIG. 7B, it is used after being bent or deformed so that it is warped in the center as shown in FIG. As shown in FIG. 8B, when used in combination with a diaper, as shown in FIG. 8A, it can be arranged and used so as not to contact the wearer's pressure ulcer.

[3] Manufacturing method:
Hereinafter, an example of the method of manufacturing the absorbent article in the present embodiment will be described.

[3-1] Production of absorbent article:
An absorber is arrange | positioned on both surfaces of a non-liquid-permeable sheet, and also a liquid-permeable sheet is arrange | positioned on the upper surface of each absorber. Next, the absorbent article is obtained by joining the peripheral part of the absorbent body so as to be sandwiched between the liquid sheet.

  For example, as shown in FIGS. 1 and 2, in the absorbent article 1 having a pair of side flaps 11, 11 and a pair of end flaps 9, 9, the non-liquid-permeable sheet 3 is substantially in the center of the upper and lower surfaces. After laminating the absorbent bodies 5a and 5b having a smaller area than the liquid-permeable sheet 3, the liquid-permeable sheet 7a having the same length as the non-liquid-permeable sheet 3 and a slightly wider width so as to cover each absorber. 7b, and the pair of side flaps 11, 11 and the pair of end flaps 9, 9 are opposed to the liquid-permeable sheet 7a, the non-liquid-permeable sheet 3, and the liquid-permeable sheet 7b that extend from the absorbent body. It can be formed by joining the surfaces together. Further, in order to prevent the absorbent body from twisting or losing its shape, the entire opposing surfaces of the liquid-permeable sheet 7a, the absorbent body 5a, the liquid-permeable sheet 3, the absorbent body 5b, and the liquid-permeable sheet 7b are respectively opposed. It is preferable to form by bonding. The non-liquid-permeable sheet 3 preferably extends to the side flaps or end flaps, but may not be arranged.

  The method for joining the side flaps and end flaps is not particularly limited, but for example, a conventionally known joining method using heat such as heat sealing, ultrasonic waves, hot melt or the like can be suitably used. .

  The disposable diaper of the present invention can be suitably used as an absorbent article for infants or for adults such as the elderly and persons with disabilities who need care. The absorbent article of the present invention can absorb urine from both the front and back surfaces, and the absorbed urine can be absorbed and retained without falling out to the opposite surface, and can be used by being bent and deformed. It can be particularly suitably used as an absorbent article for preventing leakage that can be matched to the body shape, symptoms, etc. of a person.

It is a top view showing one embodiment of an absorptive article of the present invention, and is the figure shown typically. It is a top view which shows one Embodiment of the absorbent article of this invention, and is sectional drawing which showed typically the state cut | disconnected along the A-A 'line | wire shown by FIG. It is a top view which shows another embodiment of the absorbent article of this invention, Comprising: It is the absorbent article which has arrange | positioned different absorbers, Comprising: The state cut | disconnected to the side direction of the absorbent article similarly to FIG. It is sectional drawing shown. It is a top view which shows another embodiment of the absorbent article of this invention, and is the figure which showed typically the state which formed the absorber in uneven | corrugated shape. It is sectional drawing which showed typically the state which cut | disconnected the top view of FIG. 4A along the B-B 'line | wire shown by FIG. 4A. It is a top view which shows another embodiment of the absorbent article of this invention, and is the figure which showed typically the state which formed the absorber in uneven | corrugated shape. It is sectional drawing which showed typically the state which cut | disconnected the top view of FIG. 5A along the C-C 'line | wire shown by FIG. 5A. It is the figure which showed typically one usage method of one Embodiment of the absorbent article of this invention. It is the figure which showed typically the usage method of one Embodiment of the absorbent article of this invention, Comprising: It is the figure which showed the state with which the wearer was equipped with the absorbent article shown by FIG. 6A. It is the figure which showed typically one usage method of one Embodiment of the absorbent article of this invention. It is the figure which showed typically the usage method of one Embodiment of the absorbent article of this invention, Comprising: It is the figure which showed the state with which the wearer was equipped with the absorbent article shown by FIG. 7A. It is the figure which showed typically one usage method of one embodiment of the absorbent article of this invention, Comprising: It is the figure which showed an example of the attachment location to a diaper when using together with a diaper. . It is the figure which showed one usage method of one embodiment of the absorbent article of this invention, Comprising: The absorbent article shown by FIG. 8A is used together with the diaper shown by FIG. It is the figure which showed the mounted state.

Explanation of symbols

1, 21, 31, 41, 51, 61, 71: Absorbent article, 3: Non-liquid-permeable sheet, 3a: Upper surface, 3b: Lower surface, 5, 5a, 5b, 5c, 5d, 5e, 5f: Absorber 6a, 6b: recess (absorber), 7, 7a, 7b: liquid-permeable sheet, 9: end flap, 11, 11a, 11b: side flap, 13: thigh root, 15: waist circumference, 100: diaper .

Claims (8)

An absorbent article used for absorbing bodily fluids or excreta,
Comprising at least a liquid-impermeable sheet and an absorber disposed on both surfaces of the liquid-impermeable sheet,
The absorber is configured to be able to absorb the body fluid or excrement of the wearer,
The said non-liquid-permeable sheet | seat is an absorbent article comprised as a so-called leak-proof sheet which prevents that the absorbed bodily fluid or excretion permeate | transmits the other absorber. The absorbent body is composed of a first absorbent body disposed on one surface of the non-liquid-permeable sheet and a second absorbent body disposed on the other surface of the non-liquid-permeable sheet,
The absorptive article according to claim 1 in which absorption performance of said 1st absorber and said 2nd absorber differs.   The absorbent article according to claim 1 or 2, wherein the liquid-impervious sheet is moisture-permeable.   The absorbent article according to any one of claims 1 to 3, wherein the absorbent body is covered with a liquid-permeable sheet.   The absorbent article according to any one of claims 1 to 4, wherein the absorbent article is formed to be bendable or deformable.   The absorbent article according to any one of claims 1 to 5, wherein the absorbent article is formed in a bellows shape so as to be bent or deformable.   The absorbent article of any one of Claims 1-6 currently formed so that the said absorber may become uneven | corrugated shape.   The absorbent article according to claim 7, wherein the uneven shape is formed by arranging a plurality of the absorbers.

Images