JP2012200296A - Urine absorbing pad - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a urine absorbing pad having an absorber that prevents deformation along with the movement of underwear and prevents leakage of urine even if a large quantity of urine is released.SOLUTION: In the urine absorbing pad, side sheets 5 are directly or indirectly fixed to the rear side of both sides of the absorber 3 at least in an intermediate part CL in the longitudinal direction of the pad. The both side sheets 5 are turned down to the rear side along lines parallel in the longitudinal direction so as to separate from each other across the lateral center. The surface of each turned-down part on a back sheet 2 side is directly or indirectly fixed to the back sheet 2, while the other part is unfixed to the back sheet 2. A top sheet 1 with lateral elasticity is stretched in the lateral direction across the both side sheets 5 and 5 on the front surface side, and is directly or indirectly fixed to the side sheets 5 and 5, so that the lateral contractive force of the top sheet 1 acts in the direction of raising the sides of the absorber 3 toward the front surface side separately from the back sheet 2.

Description

  The present invention relates to a urine absorbing pad.

  A disposable urine absorbent pad such as a urine absorbent pad generally has a structure in which an absorbent body is interposed between a liquid-permeable top sheet disposed on the front surface side and a back sheet disposed on the back surface side.

  In this type of urine absorption pad, a structure is provided in which a separate absorber is provided in the excretory opening contact portion, a compression groove is provided, etc., and a structure in which a void is not easily generated between the excretion opening and the urine absorption pad is provided. There are known techniques for reducing the occurrence of liquid leakage along the path (for example, Patent Documents 1 and 2). Moreover, the width direction of the absorber produced by leg pressure is provided by providing a wing that extends outward in the width direction at the middle portion in the longitudinal direction of the urine absorption pad, and fixing the outer side in the width direction to the underwear through fixing means on the back surface of the wing. Techniques for reducing the center-to-center misalignment and lateral misalignment caused by the misalignment are also widely known (for example, Patent Documents 3 and 4).

JP 2009-112590 A JP 2010-119743 A Japanese National Patent Publication No. 11-507287 JP 2005-288197 A JP 2001-70346 A JP 2007-135943 A

  However, when the absorbent body has a medium-high structure with respect to the urine absorption pad, when a large amount of urine is produced at a time, the absorption speed of the absorbent body cannot catch up with the excretion speed, and the urine has a low viscosity. There is a possibility that the front and back and side leakage will occur along the surface. In particular, in the case of a urine absorption pad with wings, the absorbent body tends to deform following the movement of the underwear, and in particular, it tends to be an inverted V shape or a similar shape in front view. For this reason, if a large amount of urine is generated between the absorbent body and the body in the width direction, a large amount of urine may not be able to be absorbed by the absorbent body in contact with the excretion opening, and horizontal leakage may occur from the gap. there were.

  An object of the present invention is to provide a urine absorbing pad that is unlikely to deform due to the shape of the absorbent body following the movement of underwear and that is less likely to cause leakage even when a large amount of urine is generated.

The present invention that has solved the above problems is as follows.
<Invention of Claim 1>
A urine absorption pad in which an absorbent body is interposed between a liquid-permeable top sheet disposed on the front surface side and a liquid-impermeable back sheet disposed on the back surface side,
At least in the middle in the longitudinal direction, it has a side sheet between the absorber and the back sheet,
The side sheet is directly or indirectly fixed to both sides of the back surface of the absorber,
Both side sheets are folded back outward in the width direction along a line substantially parallel to the longitudinal direction closer to the center of the width direction than the absorber side end so as to be separated from each other across the width direction center line. The back sheet side surface is fixed directly or indirectly to the back sheet, and the remaining part of the side sheet is unfixed to the back sheet at least in the middle in the longitudinal direction,
The intermediate portion in the width direction on the back side of the absorber is fixed to the back sheet to form an absorber fixing portion,
The top sheet has stretchability in the width direction at least in the middle in the longitudinal direction, and is directly or indirectly fixed to the side sheet in a state of extending in the width direction,
The top sheet is configured to shrink in the direction of rising the skin contact surface side by separating the absorber side part from the back sheet,
A urine absorption pad characterized by that.

(Function and effect)
By adopting a configuration in which at least both side portions of the intermediate portion in the longitudinal direction of the absorbent body are not fixed to the back sheet, the lateral portion of the absorbent body is hardly deformed following the movement of the underwear.
In addition, the side sheet is fixed to the side sheet in the stretched state, and the side sheet is not fixed to the back sheet. stand up. Therefore, following the rise of the side flap, at least both side portions of the intermediate portion in the longitudinal direction rise from the back sheet. On the other hand, the center part in the width direction of the absorber is fixed to the back sheet. That is, in the said part, an absorber becomes a concave structure with respect to a skin contact surface, ie, V shape and U shape by a front view. In this concave portion, urine can be temporarily stored, so that even when a large amount of urine is discharged, the liquid is retained in the article, and it is difficult to cause leakage.
In addition, the top sheet can be kept in contact with the skin with little influence on the movement of the underwear and the movement of the back sheet following the movement, thereby preventing the front and rear transfer leakage that occurs along the skin. it can.

<Invention of Claim 2>
The urine absorption pad according to claim 1, wherein the top sheet has an opening having a diameter of 1.0 to 4.0 mm at least at an excretion opening contact portion, and an opening ratio of the opening arrangement portion is 40 to 80%.

(Function and effect)
Usually, the urine absorption pad is arranged so as not to have a space between the top sheet and the absorber, and urine attached to the top sheet quickly moves to the absorber side. Since the urine absorption pad according to claim 1 of the present application has a space between the top sheet and the absorber, urine may not be smoothly transferred to the absorber. Therefore, a large opening having a diameter of 1.0 to 4.0 mm is provided in the excretion opening contact portion of the top sheet, and the opening ratio is set to 40 to 80%. Urine has a low viscosity, and if it is a top sheet having such an opening, it can pass smoothly and move to the absorber side.

<Invention of Claim 3>
The urine absorbing pad according to claim 1 or 2, wherein the top sheet is a non-woven fabric, and the non-woven fabric contains 10 to 70% by weight of water-absorbing fibers.

(Function and effect)
For example, when a small amount of moisture such as sweat adheres to the top sheet, the transfer of moisture to the absorbent body is not performed smoothly like urine excreted in large quantities, and it tends to cause a sticky feeling to the wearer There's a problem.
By using a water-absorbing fiber for the top sheet, a small amount of moisture can be absorbed by the top sheet, making it difficult for the wearer to experience discomfort.

<Invention of Claim 4>
The urine absorption pad according to any one of claims 1 to 3, further comprising a liquid-permeable spacer in a width direction intermediate portion between the top sheet and the absorber at least in a middle portion in the longitudinal direction.

(Function and effect)
The invention according to claims 1 to 3 is a configuration having a recess that can hold urine between the top sheet and the absorber, but when worn, the rise of the absorber side portion may be crushed and the recess may not be secured. . Therefore, a spacer for maintaining a space between the top sheet and the absorber is disposed. Moreover, it can suppress that the urine received by the recessed part flows out of a side seat by reverse return before absorption. As the spacer, a liquid-permeable material is used so as not to hinder the transfer of urine to the absorber.

<Invention of Claim 5>
At least in the longitudinal direction intermediate portion of the absorbent body, in the vicinity of both side edges of the absorbent body fixing portion, there is a compressed groove extending in the longitudinal direction, and the compressed groove is not arranged on the top sheet, The urine absorption pad of any one of Claims 1-4.

(Function and effect)
By arranging a pressing groove (emboss) in the vicinity of the side edge of the absorber fixing portion of the absorber, the pressing groove serves as a starting point of the side portion of the absorber, and the absorber is kept in a stable concave shape. It becomes easy to sag. In addition, since the top sheet and the absorber need to be separated from each other, the compressed groove is not disposed on the top sheet.

<Invention of Claim 6>
At least one of the front end part and the rear end part of the excretory opening contact part of the absorber has a pressing groove extending in the width direction, and the pressing groove is not arranged on the top sheet. Item 6. The urine absorption pad according to any one of Items 1 to 5.

(Function and effect)
In order to reduce the leakage of urine in the front-rear direction, it is preferable that the front and rear ends of the urine absorption pad rise. By arranging the squeezing grooves at the front and rear ends of the excretion opening contact part, the squeezing grooves serve as starting points of the rising and falling ends, and are easily raised in a stable shape.
In addition, since the top sheet and the absorber need to be separated from each other, the compressed groove is not disposed on the top sheet.

  As described above, according to the present invention, since the side end portion of the absorbent body is not fixed to the backsheet, unnecessary deformation of the absorbent body that occurs in accordance with the movement of the underwear can be reduced. it can. In addition, by making the absorbent body concave with respect to the surface, even if a large amount of urine is received at one time, urine can be temporarily stored in the concave portion, thereby preventing liquid leakage, particularly lateral leakage. Can be prevented.

It is a top view of the urine absorption pad of the present invention. It is a bottom view of the urine absorption pad of the present invention. It is a top view in the state where a top sheet was omitted from the urine absorption pad of the present invention. It is an AA arrow line view. It is a BB line arrow directional view. It is a principal part expanded sectional view of FIG. It is a principal part expanded sectional view of 2nd Embodiment. It is a top view in the state where a top sheet of a 2nd embodiment was omitted. It is a principal part expanded sectional view of 3rd Embodiment. It is a top view from the skin contact surface side of 4th Embodiment. It is a top view which shows another example of the top sheet of 4th Embodiment. It is principal part sectional drawing which shows the various positional relationship of a top sheet | seat and a side sheet | seat. It is a perspective view which shows the use condition of the urine absorption pad of this invention.

  Next, embodiments of the present invention will be described with reference to the accompanying drawings. In the present invention, “front” refers to the front side when the wearer wears, and “rear” refers to the opposite side. The “longitudinal direction” refers to the front-rear direction, and the “width direction” refers to a direction perpendicular to the front-rear direction in the top view. Further, “upper”, “upper layer”, and “front surface” indicate the skin contact surface side, and “lower”, “lower layer”, and “back surface” indicate the opposite side.

[First Embodiment]
1st Embodiment is shown in FIGS. 1-6 and FIG. FIG. 1 is a top view showing an example of an embodiment of a urine absorption pad 10 according to the present embodiment. FIG. 2 is a bottom view (back surface) of the urine absorption pad of FIG. 3 shows the urine absorbing pad 10 of FIG. 1 with the top sheet 1 omitted, FIG. 4 is a view taken along the line AA in FIG. 1, and FIG. 5 is a view taken along the line BB in FIG. 6 is an enlarged view of a main part of FIG.

  The basic structure of the urine absorbing pad 10 is that a liquid-permeable top sheet 1 made of a nonwoven fabric, an absorbent body 3 and a back sheet 2 made of a liquid-impervious sheet such as a polyethylene sheet are laminated in this order. 5 and 5 are arranged. A second sheet made of a non-woven cloth or the like may be laminated between the top sheet 1 and the absorbent body 3 to improve body fluid diffusibility. Furthermore, you may provide the standing gather which has a horizontal-moisture prevention function of a bodily fluid on both sides.

  The top sheet 1 and the back sheet 2 extend at the front rear side and both sides of the absorber 3. In the extended portion, the top sheet 1 and the back sheet 2 are joined together by an adhesive such as hot melt, heat sealing, or the like to form an end flap portion EF.

  The extension of the back sheet 2 and the side sheet 5 is increased in the width direction at the middle portion in the longitudinal direction, and the so-called wing-shaped flap is folded and fixed to the back side (outer surface side) of the underwear at the elongated portion. It is good also as a structure which has W.

  As the back sheet 2, a sheet material having at least water shielding properties such as polyethylene is used, but in recent years, a material having moisture permeability tends to be used from the viewpoint of preventing stuffiness. The water- and moisture-permeable sheet material is a microporous material obtained by melting and kneading an inorganic filler in an olefin-based resin such as polyethylene or polypropylene to form a sheet, and then stretching in a uniaxial or biaxial direction. A sheet is preferably used. As the back sheet 2, a polylaminated nonwoven fabric in which a plastic film and a nonwoven fabric are laminated may be used.

  On the back side of the back sheet 2, a fastening portion S1 for underwear such as shorts is usually provided. The wing flap W is also provided with a fastening portion S2. The fastening portions S1 and S2 can be formed by, for example, applying a pressure-sensitive adhesive made of a styrene / butadiene copolymer, a styrene / olefin copolymer, or the like in a strip shape in the front-rear direction. This fastening portion is for fastening the urine absorption pad 10 to the underwear at the time of wearing, but at the stage of providing the urine absorption pad 10 to the consumer, a release sheet for individual packaging or the like is used. It can also be fastened. The release sheet is made of a polyethylene sheet, a polypropylene sheet, a polyethylene terephthalate sheet, a laminated paper, or the like, and can be peeled from the fastening portion.

  As a material of the absorbent body constituting the absorbent body 3, any material can be used as long as it can absorb and retain body fluids. In addition to natural fibers such as pulp, synthetic fibers can also be used, or the amount of absorbed body fluids In order to increase this, a water-absorbing polymer can be used, or these can be used together as appropriate. As synthetic fibers, for example, polyolefins such as polyethylene or polypropylene, polyesters such as polyethylene terephthalate and polybutylene terephthalate, polyamides such as nylon, and copolymers thereof can be used. It may be what you did. In addition, a composite fiber such as a core-sheath fiber, a side-by-side fiber, or a split fiber having a fiber having a high melting point as a core and a fiber having a low melting point as a sheath can also be used. As the synthetic fiber mixed in the absorbent body, it is desirable to use a hydrophobic fiber that has been surface-treated with a hydrophilizing agent so as to have affinity for body fluids. In general, fluffed pulp mixed with water-absorbing polymer powder is preferably used from the viewpoint of absorption function and price.

  The absorbent body 3 is desirably surrounded by the packaging sheet 4 in order to maintain its shape. The material of the packaging sheet 4 is not particularly limited as long as it has liquid permeability, but a water-decomposable sheet such as crepe paper can be suitably used.

  It is preferable to provide a pair of squeezing grooves E1 extending in the longitudinal direction and spaced apart from each other across the center in the width direction in the middle portion in the longitudinal direction of the absorber 3. In the example of illustration, although the pressing groove E1 is attached | subjected to the curve shape which curved gently so that it may become convex to the width direction center side, you may attach | subject to the linear form parallel to a longitudinal direction. The separation distance between the left and right compressed grooves E1 is preferably 20 to 75%, particularly 30 to 60%, of the length in the width direction of the absorber. Furthermore, it is preferable that the absorbent body 3 is provided with pressing grooves E2 extending in the width direction at front and rear end portions in the longitudinal direction of the excretory opening contact portion (longitudinal direction intermediate portion CL in the illustrated example). The squeezing groove E2 may have an arc shape that protrudes outward in the longitudinal direction as in the illustrated example. By arranging the squeezing groove E2, the front and rear end portions of the absorber are easily raised in accordance with the shape of the body. The compressed grooves E <b> 1 and E <b> 2 are provided from the upper surface of the absorbent body 3 or the upper surface of the packaging sheet 4, and are not attached to the top sheet 1. If the pressing grooves E1 and E2 are attached from the surface of the top sheet 1, the top sheet 1 is integrated with the absorber near the center in the width direction of the absorber, and it becomes difficult to achieve the object of the present invention. Because. In addition, when providing the pressing groove E2, in order to make it easy for the front-and-rear end part of an absorber to stand up independently from underwear etc., it is fastened to the back surface ahead of the front pressing groove E2 and the rear of the pressing groove E behind. It is preferable not to provide the part S1.

  Only the intermediate part in the width direction of the absorber 3 is fixed to the back sheet 2 with a hot melt adhesive or the like via the packaging sheet 4. In the illustrated example, only the portion between the two compressed grooves E <b> 1 is fixed to the backsheet 2. Thereby, as will be described later, the absorbent body that is not fixed and that is on the outer side in the width direction from the pressing groove E1 is easily separated from the backsheet 2 and rises upward from the pressing groove E1.

  As the top sheet 1, a nonwoven fabric, a porous plastic sheet, or the like is preferably used. As the nonwoven fabric forming the top sheet 1, a nonwoven fabric obtained by an appropriate processing method such as a spunlace method, a spunbond method, a thermal bond method, a melt blown method, or a needle punch method can be used. Of these processing methods, the spunlace method is excellent in terms of flexibility and drape, and the thermal bond method is excellent in terms of being bulky and soft.

  The top sheet 1 is preferably provided with a number of openings. As will be described later, in the urine absorption pad of the present embodiment, since there is a gap between the top sheet 1 and the absorber, if the liquid permeability of the top sheet 1 is low, it is difficult for urine to move to the absorber side. Easy to remain on top sheet. In particular, urine has a large amount of excretion and a low viscosity, so that it is difficult to be retained on the top sheet, and leakage tends to occur. When an opening is formed in the top sheet 1, urine is quickly absorbed, and the dry touch property can be improved. In the present embodiment, it is particularly preferable that the size of the opening be 1.0 to 4.0 mm, particularly 1.5 to 3.5 mm. The opening may be arranged on the entire top sheet 1 or may be arranged only in the middle part in the longitudinal direction contacting the excretion opening. The aperture ratio of the portion provided with the opening (opening arrangement portion) is preferably 40 to 80%, particularly preferably 50 to 65%.

  The top sheet 1 is assumed to have elasticity in the width direction. The top sheet 1 preferably has an elongation ratio of 105 to 300%, particularly 110 to 200% in the width direction at least in the longitudinal direction intermediate portion CL. This is because, as will be described later in detail, the top sheet 1 needs to exert a force applied from the outside in the width direction to the center side. The term “elongation rate” means a value when the natural length is 100%.

  In order to have such extensibility, the sheet material of the top sheet 1 is preferably a stretchable material such as a polyurethane film or an elastomer film when a porous plastic sheet is used. Moreover, when using a nonwoven fabric, you may use what consists only of the fiber which has a crimp property and a stretch property, and it formed by mixing with the non-stretch fiber in the state which extended the fiber which has a stretch property. Things may be used.

  On the other hand, as the sheet material of the top sheet 1, a non-woven fabric, a porous plastic film, or the like that does not itself have elasticity may be used. In this case, the plurality of thread-like elastic bodies 11 are fixed to the back surface side of the top sheet 1 so as to extend in the width direction, and stretched in the width direction. In the illustrated example, the thread-like elastic body 11 is disposed only in the middle portion CL in the longitudinal direction, but may be disposed in the entire longitudinal direction.

  When a non-stretchable non-woven fabric is used as the sheet material of the top sheet 1, the constituent fibers include olefins such as polyethylene or polypropylene, synthetic fibers such as polyesters and polyamides, and recycled fibers such as rayon and cupra. In addition, it is preferable to use water-absorbing fibers such as cotton. The proportion of the water-absorbing fibers in the nonwoven fabric forming the top sheet 1 is preferably 10 to 70% by weight, particularly 15 to 50% by weight. By setting the water-absorbing fiber to 10% by weight or more, there is an advantage that a small amount of moisture such as sweat can be absorbed by the top sheet 1. However, if the blending amount of the water-absorbing fibers exceeds 70% by weight, the water retention of the top sheet 1 itself becomes too high, and moisture is difficult to transfer to the absorber.

As the side sheet 5, a nonwoven fabric subjected to appropriate water repellent treatment or hydrophilic treatment can be used depending on the purpose of preventing urine from penetrating or enhancing the feeling of touch. Further, the side sheet 5 and the back sheet 2 may be the same sheet. As the non-woven fabric constituting the side sheet 5, natural fibers, synthetic fibers, regenerated fibers, or the like can be used as a raw material, and those formed by an appropriate processing method can be used. In order to prevent this, it is preferable to use a non-woven fabric with reduced basis weight and air permeability. Specifically, it is desirable to use a nonwoven fabric prepared with a basis weight of 18 to 23 g / m ² , and in order to prevent permeation of body fluids reliably, a silicone-based or paraffin-based water repellent is coated. The water-repellent treated non-woven fabric is preferably used.

  As shown in FIG. 2 to FIG. 5, the side sheet 5 is disposed on both end portions of the absorber, and is folded back to the absorber back surface side so as to wrap the absorber side end. Further, the side sheets 5 and 5 are folded back on the back side along a line substantially parallel to the front-rear direction so as to be spaced apart across the center in the width direction on the back side of the absorber. It extends outward from the absorber side end, and further coincides with the position of the side end of the backsheet. That is, each of the side seats 5 is arranged in a shape close to a Z shape when viewed from the front-rear direction. A hot-melt adhesive or the like is disposed on the absorber-side surface of the backsheet 5 before being folded, and is generally fixed to the abutting member, that is, the absorber 3 or the packaging sheet 4, the backsheet 2, and the like. In the longitudinal direction intermediate portion CL, no adhesive or the like is disposed on the surfaces 51 and 52 where the side sheets are folded and come into contact with each other, and are not fixed to each other. On the other hand, as shown in FIG. 5, in the longitudinal direction front part FW and the longitudinal direction rear part BK, hot melt adhesive or the like is also arranged on the contact surfaces 51, 52 between the side sheets, and the entire side sheet 5 Is fixed to the backsheet 2 directly or indirectly. In addition, over the entire longitudinal direction,

  It is preferable that the width direction center separation distance on the absorber back surface side of both side sheets 5 and 5 is 20 to 80% of the length in the width direction of the absorber. Moreover, when attaching the pressing groove E1, it is preferable to fold the side sheets 5 and 5 outward in the width direction with respect to the pressing groove because it becomes easy to assist rising of the absorber side portion.

  The top sheet 1 is disposed over the entire width of the absorber on the surface side of the absorber, and in the form of FIGS. 2 to 4, the top sheet 1 is fixed on the side sheet at the end portion on the surface side of the absorber with a hot melt adhesive or the like. As for the top sheet 1, only the both ends in the front-rear direction and the both ends in the width direction are fixed, and the intermediate part is not fixed. As described above, the top sheet 1 has stretchability in the width direction at least in the longitudinal direction intermediate portion CL. In the example of illustration, the top sheet 1 is being fixed to the side sheet 5 in the state pulled in the width direction in the longitudinal direction intermediate part CL. Accordingly, in the portion, the top sheet 1 has a contracting force in the center in the width direction, whereby the portion fixed to the top sheet 1 of the side sheet 5 is pulled from the outside in the width direction to the inside. Following this, the side portion of the absorbent body 3 indirectly fixed to the side seat is lifted upward. Since the back surface of the side sheet 5 that is indirectly fixed to the side portion back surface side of the absorber 3 is not fixed to the back sheet 2, the back sheet 2 is not lifted by contraction of the top sheet 1. On the other hand, since the intermediate portion in the width direction of the absorbent body 3 is fixed to the back sheet 2 via the packaging sheet 4, it does not lift up following the contraction of the top sheet 1. Therefore, both side portions of the absorbent body 3 are lifted away from the back sheet 2 and the entire absorbent body is substantially V-shaped when viewed from the front.

  The diversity of the combination of the top sheet 1 and the side sheet 5 is shown in FIGS. The top sheet 1 shown in FIG. 4 is fixed to the side sheet 5 on the upper surface with a hot melt adhesive or the like. Although the said form has the advantage that manufacture is easy, on the other hand, when a sheet | seat with a large opening is used as the top sheet 1, it says that an adhesive agent is easy to be exposed to a skin contact surface from an opening part. There's a problem. In the example of FIG. 12A, the side sheet 5 is fixed on the top sheet 1. In this case, although the adhesive oozes out little, the stretchable top sheet 1 is directly fixed to the packaging sheet 4, so that there is a problem that the packaging sheet 4 is easily broken when the top sheet 1 contracts. Moreover, since it becomes easy to touch the vicinity of the excretion opening | mouth and the side sheet 5 tends to impair a feeling of wear, it is preferable that the side sheet 5 is not exposed to the surface side of an absorber as much as possible. In the example of FIG. 12B, the top sheet 1 extends to the absorber back surface side and is fixed to the side sheet 5. In this case, although a large sheet is required as a member of the top sheet 1 and costs are high, there is no problem that the adhesive exposed from the opening of the top sheet 1 touches the skin, and the absorber side portion is more likely to rise. There is a merit that. As shown in FIG. 12C, the top sheet 1 and the side sheet 5 are not directly bonded, but the side auxiliary sheet 13 is provided as a separate member, and the top sheet 1 and the side sheet 5 are fixed thereto. Also good.

[Second Embodiment]
A second embodiment of the present invention is shown in FIGS. 7 and 8, the urine absorption pad has a spacer 12 at the center in the width direction between the top sheet 1 and the absorber. The spacer 12 may be locally disposed in the middle portion in the longitudinal direction as in the illustrated example, or may extend in the entire longitudinal direction.

  As the spacer 12, a sheet such as an air-through non-woven fabric folded into a Ω-shape as shown in FIG. 7A, a shape having a plurality of triangular waves as shown in FIG. 7B, a bellows shape (not shown), or the like. A material, a sheet of foamed urethane having a thickness itself, sponge-like cellulose, an air-through nonwoven fabric provided with an elongated thread-like elastic body, and the like can be suitably used. It is necessary to use a spacer 12 having a high liquid permeability so that urine that has passed through the top sheet 1 can smoothly move to the absorber.

[Third Embodiment]
A third embodiment of the present invention is shown in FIG. In the example of FIG. 9, the side portion of the absorbent body 4 that is not fixed to the back sheet 2 is folded back a plurality of times (twice in the illustrated example) along a line parallel to the longitudinal direction. Thus, by making an absorber into a bellows shape, the top sheet 1 and the absorber 4 in the width direction intermediate part can be separated more, and it becomes possible to store a large amount of urine by the said separation space. . Moreover, since the liquid absorption area of an absorber becomes large, more urine can be absorbed. In particular, it is possible to effectively prevent urine that has once moved below the top sheet 1 from flowing out from the side end.

  It is preferable to use the sheet-like thing which is easy to take a folding structure for the absorber of this embodiment.

[Fourth Embodiment]
A fourth embodiment of the present invention is shown in FIGS. In the example of FIG. 10, a plurality of thread-like elastic bodies 11 are fixed to the back surface side of the top sheet 1 in a stretched state (a state in which tension is applied) in a wavy shape having apexes on the outer side and the inner side in the width direction. With such a shape of the thread-like elastic body 11, the top sheet 1 can be expanded and contracted not only in the width direction but also in the longitudinal direction. By shortening the wavelength of the waveform exhibited by the thread-like elastic body 11 and increasing the wave height, it can be easily expanded and contracted in the width direction, and by increasing the wavelength and decreasing the wave height, it can be easily expanded and contracted in the longitudinal direction. be able to. The wavelength and wave height may be changed depending on the part, and the elasticity may vary depending on the part.

  When the thread-like elastic body 11 is fixed, for example, by applying a strong tension in the middle portion in the longitudinal direction and weakening the tension in the longitudinal front and rear end portions, the stretch rate may differ depending on the part. Good. In addition, an adhesive is not disposed on a portion that does not require stretchability. Different tension is applied to each of the plurality of thread-like elastic bodies 11, and the fastening position is changed for each thread-like elastic body. Can be adjusted. In the illustrated example, the plurality of thread-like elastic bodies 11 are arranged so that their entire waveforms overlap. However, for example, they may be configured not to overlap each other, or may be configured to partially overlap each other. When the waveform of the thread-like elastic body 11 is overlapped as in the illustrated example, there is an advantage that adjustment is easy when the stretchability of the sheet is changed for each part as described above.

  Another example of the fourth embodiment is shown in FIG. The thread-like elastic body 11 may have a mesh shape (FIG. 11A), a triangular wave shape (FIG. 11B), or the like, or may have a wave shape having apexes on the outer side and the inner side in the longitudinal direction (FIG. 11 ( C)).

  By providing extensibility in the front-rear direction, the longitudinal front end FW and the rear end BK can be easily raised. In particular, it is preferable to arrange the pressing groove E2 in FIG. 4 because the absorbent body can easily rise smoothly from the pressing groove E2. The absorbent body tends to be shaped like a V-shaped groove or a U-shaped groove due to the expansion and contraction of the top sheet 1, and if it is such a shape over the entire longitudinal direction, the liquid easily moves in the longitudinal direction through the groove, There is a risk that front and rear leakage may occur, but these can be made difficult to occur by raising the front-rear direction. In addition, a compression groove can also be arranged so that the holding | maintenance of the shape of the absorber which stood up in the front of the front side compression groove E2, and the back of the rear side compression groove E2, or any one may be supported (FIG. Not shown).

  DESCRIPTION OF SYMBOLS 10 ... Urine absorption pad, 1 ... Top sheet, 2 ... Back sheet, 3 ... Absorber, 4 ... Packaging sheet, 5 ... Side sheet, 11 ... String-like elastic body, 12 ... Spacer, 13 ... Side auxiliary sheet, S1, S2 ... fastening part, E1, E2 ... pressing groove.

Claims (6)

A urine absorption pad in which an absorbent body is interposed between a liquid-permeable top sheet disposed on the front surface side and a liquid-impermeable back sheet disposed on the back surface side,
At least in the middle in the longitudinal direction, it has a side sheet between the absorber and the back sheet,
The side sheet is directly or indirectly fixed to both sides of the back surface of the absorber,
Both side seats are folded back outward in the width direction along a line substantially parallel to the longitudinal direction closer to the center in the width direction than the end on the absorber side so as to be separated from each other across the center line in the width direction. The seat side surface is fixed directly or indirectly to the back sheet, and the remaining part of the side sheet is unfixed to the back sheet at least in the middle in the longitudinal direction,
The intermediate portion in the width direction on the back side of the absorber is fixed to the back sheet to form an absorber fixing portion,
The top sheet has stretchability in the width direction at least in the middle in the longitudinal direction, and is directly or indirectly fixed to the side sheet in a state of extending in the width direction,
The top sheet is configured to shrink in the direction of rising the skin contact surface side by separating the absorber side part from the back sheet,
A urine absorption pad characterized by that.   The urine absorption pad according to claim 1, wherein the top sheet has an opening having a diameter of 1.0 to 4.0 mm at least at an excretion opening contact portion, and an opening ratio of the opening arrangement portion is 40 to 80%.   The urine absorbing pad according to claim 1 or 2, wherein the top sheet is a non-woven fabric, and the non-woven fabric contains 10 to 70% by weight of water-absorbing fibers. The urine absorption pad according to any one of claims 1 to 3, further comprising a liquid-permeable spacer in a width direction intermediate portion between the top sheet and the absorber at least in a middle portion in the longitudinal direction.   At least in the longitudinal direction intermediate portion of the absorbent body, in the vicinity of both side edges of the absorbent body fixing portion, there is a compressed groove extending in the longitudinal direction, and the compressed groove is not arranged on the top sheet, The urine absorption pad of any one of Claims 1-4.   At least one of the front end part and the rear end part of the excretory opening contact part of the absorber has a pressing groove extending in the width direction, and the pressing groove is not arranged on the top sheet. Item 6. The urine absorption pad according to any one of Items 1 to 5.

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