JP2006198122A - Absorbent article - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent bending of longitudinal end sections of an absorbent article. <P>SOLUTION: A main unit 2 of the absorbent article 1 comprises an absorbent core 22 which is an absorbing medium, a top sheet 21 covering a main face of the absorbent core 22 on the wearer side, and a back sheet 23 covering the other main face of the absorbent core 22. In the absorbent article 1, the longitudinal length of the absorbent core 22 is ≥40 cm and ≤70 cm, and corners of core side end sections 221 located on the both longitudinal end sections and on both the width sides of the absorbent core 22 are removed. By doing so, when the absorbent article 1 is put on a disposable diaper and is worn on the body, each core side end section 221 of the absorbent core 22 is no longer dragged and bent by the body of the wearer or twisted by friction with the skin of the wearer. Consequently, pulling of the longitudinal end sections of the absorbent article 1 by the bent or twisted core side end sections 221 no longer happens, and bending of the longitudinal end sections of the absorbent article is prevented. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an absorbent article that receives excrement from a wearer.

  In a disposable diaper, since it is necessary to replace the entire diaper even when urinating a small amount, an economic burden is increased for the user. Therefore, conventionally, an inexpensive auxiliary absorbent device (so-called urine collecting pad or the like) is attached and worn on the absorbent body so as to cover the absorbent body of the disposable diaper, and only the auxiliary absorbent device can be replaced when urinating a small amount. Has been done.

Thus, when using an auxiliary | assistant absorber, it is necessary to prevent that an auxiliary | assistant absorber is drowned between a disposable diaper and a wearer's skin in the state which wears the disposable diaper. For example, in Patent Document 1, in the absorbent core of the absorbent article (auxiliary absorbent device), the absorbent article is placed on the wearer side by making the bending resistance of the central region in the lateral direction (width direction) higher than that of the both side regions. The technique which suppresses that an absorbent article drowns at the time of the wearing of the underpants attached to or during wearing is disclosed.
JP 2000-225138 A

  By the way, when wearing a disposable diaper fitted with such an auxiliary absorbent device (especially when raising and lowering a pants-type disposable diaper), the auxiliary absorbent device is caused by friction generated between the auxiliary absorbent device and the skin of the wearer. There are cases where the four corners of the absorbent core are rolled and bent (that is, the corners of the absorbent core are bent toward the wearer). Moreover, the corner part of an absorption core may be rolled and drowned also when a wearer moves in the state which worn the disposable diaper. In the absorbent article of Patent Document 1, since the bending resistance and warping in the longitudinal direction are suppressed by increasing the bending resistance of the central region in the width direction of the absorption core, the corner portion of such an absorption core. It is difficult to prevent drowning.

  When the corners are drowned in this way, the drowning is further increased by the movement of the wearer, and a part of the auxiliary absorbent device is rounded, and the thickness of the auxiliary absorbent device is partially increased more than twice. As a result, a feeling of stickiness is generated and the feeling of wearing is reduced. Moreover, an auxiliary | assistant absorbent tool may slip | deviate inside a disposable diaper, and there exists a possibility that urine etc. may leak to a disposable diaper from the clearance gap produced by the roundness and the shift | offset | difference of an auxiliary | assistant absorbent tool. Furthermore, even when the auxiliary absorbent device is attached to the disposable diaper with a hook-and-loop fastener or the like, the hook-and-loop fastener is peeled off from the disposable diaper due to increased wrinkles, in addition to a decrease in wearing feeling and leakage of urine, Friction with surface fasteners, which is undesirable for the wearer's skin, can also occur.

  This invention is made | formed in view of the said subject, and aims at suppressing that the edge part of the longitudinal direction of an absorbent article bends.

  Invention of Claim 1 is an absorbent article which receives excrement from a wearer, Comprising: The absorber, the top sheet which covers the main surface by the side of the wearer of the said absorber, The other side of the said absorber And a longitudinal length of the absorber is 40 cm or more and 70 cm or less, and at one end of the longitudinal direction, on both sides in the width direction of the absorber. The part has a shape with the corners removed.

  Invention of Claim 2 is an absorbent article of Claim 1, Comprising: The width | variety of the said width direction in the approximate center part of the said longitudinal direction of the said absorber is 9 cm or more and 30 cm or less.

  Invention of Claim 3 is an absorbent article of Claim 1 or 2, Comprising: It removes with respect to the rectangle surrounding the said one edge part in the said one edge part of the said absorber. The lengths of the corners in the longitudinal direction and the width direction are both 2 cm or more.

  Invention of Claim 4 is an absorbent article in any one of Claim 1 thru | or 3, Comprising: Also in the edge part of the said top sheet which covers the said 1 edge part of the said absorber, and the said back sheet | seat The portions on both sides in the width direction are formed with the corners removed.

  Invention of Claim 5 is an absorbent article of Claim 4, Comprising: The edge in the said one edge part of the said absorber, The edge in the said edge part of the said top sheet and the said back sheet | seat The distance between them is almost constant.

  Invention of Claim 6 is an absorbent article in any one of Claim 1 thru | or 5, Comprising: It is an auxiliary | assistant absorber attached to the wearer side of the exterior article worn by a wearer.

  The invention according to claim 7 is the absorbent article according to claim 6, wherein the back sheet is present in the width direction in the vicinity of the one end of the absorbent body and the exterior article. And at least a part of the central portion in the width direction of the fixing portion is present on the outer side with respect to the longitudinal direction than the portions on both sides in the width direction.

  Invention of Claim 8 is an absorbent article in any one of Claim 1 thru | or 7, Comprising: Also in the other edge part of the said longitudinal direction of the said absorber, it is the said width direction of the said absorber. The parts on both sides are formed with the corners removed.

  In this invention, it can suppress that the edge part of the longitudinal direction of an absorbent article bends. In invention of Claim 4 and 5, it can suppress that the edge part of the longitudinal direction of a top sheet and a back seat | sheet is bent. In invention of Claim 7, the bending of the absorbent article attached to the exterior article can be suppressed.

  FIG. 1 is a plan view showing a configuration of an absorbent article 1 according to the first embodiment of the present invention. The absorbent article 1 is an auxiliary absorbent device that is attached to the inside (that is, the wearer side) of a disposable diaper that is an exterior article worn by the wearer and receives excrement from the wearer.

  As shown in FIG. 1, the absorbent article 1 includes a substantially sheet-like main body 2 and the width of the main body 2 over almost the entire length in the longitudinal direction of the main body 2 (that is, the Y direction in FIG. 1). A pair of side wall portions 3 provided on both sides of the direction (that is, (+ X) side and (−X) side) are provided. In FIG. 1, the main surface on the (+ Z) side of the main body 2 is a surface in contact with the wearer. The main body 2 includes a front part 201 and a rear part 203 facing the abdomen and back sides of the wearer, and an intermediate part 202 between the front part 201 and the rear part 203, and the front part 201, the intermediate part 202, and The rear part 203 is arranged along the longitudinal direction.

  FIG. 2 is a cross-sectional view of the absorbent article 1 cut along a plane perpendicular to the Y direction at the position AA shown in FIG. 1 (that is, the position corresponding to the rear portion 203 of the main body 2). As shown in FIGS. 1 and 2, an elastic member 31 extending in the longitudinal direction is joined to each of the pair of side wall portions 3, and in a state where the absorbent article 1 is expanded as shown in FIG. The member 31 is in an extended state. In the absorbent article 1, when the elastic member 31 contracts, the side wall 3 rises toward the wearer side on the side of the main body 2, and a solid gather (so-called “gathering”) that abuts near the base of the wearer's foot when worn. Leg gather). In addition, the cross section in the front part 201 of the main-body part 2 is the same as that of FIG. Each side wall 3 may be provided with a plurality of elastic members 31.

  The side wall 3 is formed of a water-repellent or liquid-impervious nonwoven fabric (for example, a spunbond nonwoven fabric, a meltblown nonwoven fabric, an SMS (spunbond / meltblown / spunbond) nonwoven fabric), a plastic film, or a composite material thereof. . From the viewpoint of improving the comfort of the absorbent article 1, it is preferable that the side wall portion 3 has air permeability. As the elastic member 31, polyurethane yarn, polyurethane film, natural rubber or the like is used.

  As shown in FIGS. 1 and 2, the main body 2 includes an absorbent core 22 that is an absorbent body, a top sheet 21 that covers a main surface of the absorbent core 22 on the wearer side (that is, the (+ Z) side), and an absorbent body. A back sheet 23 that covers the other main surface of the core 22 is provided, and the side wall 3 is joined to the side of the absorbent core 22.

  The back sheet 23 is provided with a fastening portion 231 that extends in the width direction on the main surface opposite to the wearer side (outside) in the vicinity of the ends on both sides in the longitudinal direction of the absorbent core 22. The fastening part 231 is a hook-and-loop fastener having a large number of minute hook members, and faces the wearer side of the disposable diaper when the absorbent article 1 is attached to the disposable diaper. Removably joined to the inner fiber group.

  The top sheet 21 is a non-woven fabric formed of a liquid-permeable material, for example, a hydrophilic fiber, and quickly captures moisture of excrement from the wearer and moves it to the absorbent core 22. Nonwoven fabrics used as the top sheet 21 are, for example, point bond nonwoven fabrics, air-through nonwoven fabrics, and spunlace nonwoven fabrics, and cellulose, rayon, cotton, and the like are usually used as hydrophilic fibers forming these nonwoven fabrics. As the top sheet 21, a liquid-permeable nonwoven fabric formed of hydrophobic fibers (for example, polypropylene, polyethylene, polyester, polyamide, nylon) whose surface is hydrophilically treated with a surfactant may be used. Alternatively, a plastic film having an aperture may be used.

  The absorbent core 22 is made of a mixture of a hydrophilic fiber (for example, pulverized pulp fiber or cellulose fiber) mixed with a granular water-absorbing polymer (for example, SAP (Super Absorbent Polymer)) such as a tissue paper or a liquid-permeable nonwoven fabric. It is formed by wrapping with a sheet and absorbs moisture that has passed through the top sheet 21 to quickly fix it. The cover sheet that wraps the hydrophilic fiber is bonded to the hydrophilic fiber and the water-absorbing polymer with a hot-melt adhesive to prevent the hydrophilic fiber from losing its shape and the water-absorbing polymer from falling off (especially after water absorption). To do.

  Examples of the hot melt adhesive used for joining the covering sheets include SIS (styrene-isoprene-styrene), SBS (styrene-butadiene-styrene), SIBS (styrene-isoprene-butadiene-styrene), and SEBS (styrene- Styrene elastomers such as ethylene-butylene-styrene) and SEPS (styrene-ethylene-propylene-styrene), or elastomers such as ethylene / vinyl acetate, polyester, acrylic, polyolefin, or polyisobutylene, Hot melt adhesives of rubbers such as butyl rubber, polyisoprene and natural rubber are used.

  In the absorbent core 22, the hot melt adhesive is applied in a net shape on the cover sheet, so that the water absorption by the absorbent core 22 is not hindered, and the absorbability of the absorbent core 22 can be secured and the air permeability is improved. You can also The hot melt adhesive is applied in a net form by a method in which a molten hot melt adhesive is discharged from a plurality of nozzles in a string (for example, spiral spray method, melt blow method (also referred to as curtain spray method), omega coat method). Can be easily realized.

  The backsheet 23 is a water-repellent or liquid-impervious nonwoven fabric, and the moisture that has permeated through the topsheet 21 and the moisture once absorbed by the absorbent core 22 are opposite to the wearer side of the main body portion 2 (that is, , (-Z) side). Nonwoven fabrics used as the backsheet 23 are, for example, spunbond nonwoven fabrics, melt blown nonwoven fabrics, and SMS nonwoven fabrics, and may be subjected to water repellent treatment as necessary. A water-repellent or liquid-impervious plastic film, a composite material of the nonwoven fabric and the plastic film, or the like may be used as the back sheet 23. In this case, from the viewpoint of the wearer's comfort, it is preferable to use a plastic film having air permeability.

  In the absorbent core 22 of the absorbent article 1, the width in the X direction of the absorbent core 22 in the intermediate portion 202 is smaller than the width in the front portion 201 and the rear portion 203, as shown in FIG. The absorption core 22 is a so-called hourglass shape. The widths of the front part 201, the intermediate part 202, and the rear part 203 may be made equal. The width of the portion having the narrowest width in the X direction in the intermediate portion 202 of the absorbent core 22 (that is, the minimum width of the intermediate portion 202) is 9 cm or more and 30 cm or less, and is 10 cm in the present embodiment. Moreover, the length of the absorption core 22 in the Y direction is set to 40 cm or more and 70 cm or less, and is set to 40 cm in the present embodiment.

  As shown in FIG. 1, the portions on both sides in the width direction at the end portions on both sides in the longitudinal direction of the absorbent core 22 (that is, the portions corresponding to the actual four corners of the absorbent core 22, (Referred to as “end portion”) 221 is chamfered in a substantially arc shape, whereby the absorbent core 22 is convex outward in the longitudinal direction. Each core-side end portion 221 of the absorbent core 22 has a virtual corner portion (with a parallel diagonal line in FIG. 1) with respect to a virtually set rectangle 221 a surrounding the longitudinal end portion of the absorbent core 22. This is a portion shown below, and is hereinafter referred to as “virtual corner”.) 222 is removed, and the length of each virtual corner 222 in the X direction and Y direction (references Cx and Cy are given in FIG. 1). The length) is 2 cm or more.

  The top sheet 21 and the back sheet 23 are joined to each other around the absorbent core 22 by a hot melt adhesive or the like. In the intermediate portion 202, after the top sheet 21 and the back sheet 23 are joined to the side of the absorbent core 22, the surplus portion is cut along the edge of the absorbent core 22 at a certain distance from the edge, and the front portion The width is made smaller than 201 and the rear part 203. In the rear part 203 (and the front part 201), as shown in FIG. 2, the back sheet 23 is folded back to the wearer side so as to wrap the edges on both sides in the width direction of the absorbent core 22, and the wearer side of the absorbent core 22 The top sheet 21 is joined to the main surface opposite to the wearer side. As shown in FIG. 1, the distance W1 between the edge of the absorbent core 22 and the edges of the top sheet 21 and the back sheet 23 at the center in the width direction is 5 cm or less at both ends in the longitudinal direction of the main body 2. Preferably, it is 3 cm or less.

  Joining of members constituting the absorbent article 1 such as joining of the top sheet 21, the absorbent core 22 and the back sheet 23, joining of the main body 2 and the side wall 3, joining of the elastic member 31 to the side wall 3, etc. It is appropriately performed by various bonding methods such as bonding with a hot melt adhesive, ultrasonic bonding, and heat sealing. Hot melt adhesives such as ethylene / vinyl acetate-based and polyolefin-based elastomers and rubbers are used as hot-melt adhesives used for joining the members. Application of the hot melt adhesive to the top sheet 21, the back sheet 23, etc. is performed by coater coating in which the hot melt adhesive is directly applied by discharging the hot melt adhesive from a coater arranged in contact with the main surface of each sheet, or These are performed by various methods such as a spiral spray method, a melt blow method, and a bead method in which a hot melt adhesive is discharged from a coating head disposed above each sheet and indirectly applied.

  As described above, in the absorbent article 1, each core-side end 221 of the absorbent core 22 has a shape with the virtual corners 222 removed, so that the absorbent article 1 is attached to the disposable diaper. When worn, the core-side end portions 221 of the absorbent core 22 are restrained from being caught by the wearer's body and bent or from being drowned by friction with the wearer's skin. As a result, it can suppress that the edge part of the longitudinal direction of the absorbent article 1 is bent by being bent or curled, and the wearing feeling of the absorbent article 1 can be improved. . Moreover, the curving and deviation of the absorbent article 1 due to the bending of the end portion can be suppressed, and urine and the like can be prevented from leaking from the gap due to the curling and deviation to the disposable diaper. In the absorbent article 1, the length in the X direction and the Y direction of each virtual corner portion 222 removed from the virtual rectangle 221 a from the viewpoint of more reliably suppressing the bending of the end portion in the longitudinal direction. Both Cx and Cy are preferably 2 cm or more.

  In the absorbent article 1, the distance W1 between the edge of the absorbent core 22 and the edges of the top sheet 21 and the back sheet 23 at the end in the longitudinal direction is 5 cm or less (more preferably 3 cm or less). When the disposable diaper to which the absorbent article 1 is attached is worn, the end portions of the top sheet 21 and the back sheet 23 in the longitudinal direction are prevented from being bent toward the wearer. As a result, the water-repellent or liquid-impervious back sheet 23 is prevented from coming into contact with the wearer's skin and the feeling of wearing of the absorbent article 1a being lowered.

  In the absorbent article 1, the length of the absorbent core 22 in the Y direction is 40 cm or more and 70 cm or less, and the minimum width in the X direction in the intermediate portion 202 is 9 cm or more and 30 cm or less. In the absorbent article 1, since it is possible to suppress the end of the core side end portion 221 from being bent and the end portion in the longitudinal direction from being bent, the absorbent article 1 is larger than a general sanitary napkin or the like, and the end portion is compared. It can be said that it is particularly suitable for an absorbent article that is easily bent, such as a large-sized auxiliary absorbent such as a urine collecting pad attached to a disposable diaper.

  FIG. 3 is a plan view showing a configuration of an absorbent article 1a according to the second embodiment of the present invention, and FIG. 4 shows the absorbent article 1a in the Y direction at the position BB shown in FIG. It is sectional drawing cut | disconnected by the surface perpendicular | vertical to. The absorbent article 1a has substantially the same structure as that of the absorbent article 1 shown in FIG. 1, but has the same structure. Similarly to the absorbent article 1 according to the first embodiment, the absorbent article 1a is also an auxiliary absorbent device that is attached to the wearer's side such as a disposable diaper and receives excrement from the wearer.

  As shown in FIG. 3, the absorbent article 1 a is provided with a substantially sheet-like main body 2 and both sides of the main body 2, and two elastic members 31, respectively, as in the first embodiment. The body part 2 includes a front part 201 and a rear part 203 that face the abdomen and the back side of the wearer, and an intermediate part between the front part 201 and the rear part 203. 202. When the elastic member 31 contracts, the side wall portion 3 rises toward the wearer side on the side of the main body portion 2 and comes into contact with the vicinity of the base of the wearer's foot when worn (so-called leg gather). Is formed.

  As shown in FIG. 3 and FIG. 4, the main body 2 includes an absorbent core 22 that is an absorbent body and a wearer-side main body (that is, the (+ Z) side) of the absorbent core 22, as in the first embodiment. A top sheet 21 that covers the surface and a back sheet 23 that covers the other main surface of the absorbent core 22 are provided. The back sheet 23 extends in the width direction on the main surface opposite to the wearer in the vicinity of both ends in the longitudinal direction of the absorbent core 22 and the absorbent article 1a is an exterior such as a disposable diaper. A fixing part 231 is provided that faces the wearer side of the disposable diaper when attached to the article.

  The top sheet 21, the absorbent core 22, the back sheet 23, the fastening part 231, the material of the side wall part 3 and the elastic member 31, and the joining method (including the hot melt adhesive application method, etc.) are used in the first embodiment. It is the same as the form.

  In the absorbent core 22 of the absorbent article 1a, the width in the X direction of the absorbent core 22 at the intermediate portion 202 is smaller than the width at the front portion 201 and the rear portion 203, as shown in FIG. The absorption core 22 is a so-called hourglass shape. The minimum width in the X direction in the intermediate portion 202 of the absorbent core 22 is 9 cm or more and 30 cm or less, and is 10 cm in the present embodiment. Moreover, the length of the absorption core 22 in the Y direction is set to 40 cm or more and 70 cm or less, and is set to 40 cm in the present embodiment.

  In the absorbent article 1a, the edges of both ends in the longitudinal direction of the absorbent core 22 are formed in an arc shape, whereby the absorbent core 22 is convex outward in the longitudinal direction. The core-side end portion 221 that is a portion on both sides in the width direction at the end portions on both sides in the longitudinal direction of the absorbent core 22 is a virtual corner portion with respect to a virtual rectangle 221a surrounding the end portion in the longitudinal direction of the absorbent core 22. The shape 222 is removed (shown with parallel oblique lines in FIG. 3). The lengths Cx and Cy in the X direction and the Y direction of the virtual corners 222 of the front part 201 and the rear part 203 are half of the maximum width of the absorbent core 22 in the front part 201 and the rear part 203.

  The fastening portion 231 is formed so as to be substantially along the edge of the end portion in the longitudinal direction of the absorbent core 22, and the central portion in the width direction of the fastening portion 231 is more about the longitudinal direction than the portions on both sides in the width direction. Exists outside. In other words, each of the two fastening portions 231 is convex in a direction away from the intermediate portion 202 of the main body portion 2.

  When the absorbent article 1a is formed, first, a substantially rectangular top sheet 21 and a back sheet 23 are joined around the absorbent core 22 with a hot melt adhesive with the absorbent core 22 in between. Subsequently, the substantially rectangular strip-shaped side wall portion 3 folded in a Z shape on the top sheet 21 is joined. Next, around the absorbent core 22, the top sheet 21, the back sheet 23, and the side wall portion 3 are cut along the edge of the absorbent core 22 at a certain distance from the edge, and then the fastening portion 231 is the back sheet 23. Is provided. The fastening portion 231 may be provided in advance before the back sheet 23 is joined to the top sheet 21.

  The top sheet 21 and the back sheet 23 are cut at a certain distance from the edge of the absorbent core 22 in a state where both ends in the longitudinal direction of the absorbent core 22 are covered with the longitudinal ends of the top sheet 21 and the back sheet 23. Thus, in the absorbent article 1 a, the portions on both sides in the width direction (hereinafter referred to as “sheet side end portions”) 211 at both ends in the longitudinal direction of the top sheet 21 and the back sheet 23 are also absorbent cores. Similar to the core-side end portion 221 of 22, the virtual corner portion is removed from the virtual rectangle surrounding the end portion. The distance W1 between the edge of the absorbent core 22 and the edges of the top sheet 21 and the back sheet 23 is substantially constant over the entire circumference of the absorbent core 22, and is preferably 5 cm or less (more preferably 3 cm or less). Is done.

  As described above, in the absorbent article 1a, as in the first embodiment, each core-side end portion 221 of the absorbent core 22 has a shape in which the virtual corner portion 222 is removed. When attached to a disposable diaper and worn, it is suppressed that each core side edge part 221 of the absorption core 22 bends. As a result, the end of the absorbent article 1 in the longitudinal direction can be prevented from being bent, and the wearing feeling of the absorbent article 1 can be improved. Moreover, the roundness and shift | offset | difference of the absorbent article 1 resulting from the bending of an edge part can be suppressed, and it can prevent that urine etc. leak to a disposable diaper.

  In the absorbent article 1a, in particular, the sheet side end portions 211 of the top sheet 21 and the back sheet 23 are also formed in a shape from which virtual corners are removed, so that the longitudinal direction of the top sheet 21 and the back sheet 23 is increased. The end portion can be prevented from being bent, and the distance between the edge of the absorbent core 22 and the edges of the topsheet 21 and the backsheet 23 at the end portion in the longitudinal direction is substantially constant, so that the top The bending of the longitudinal ends of the sheet 21 and the back sheet 23 can be more reliably suppressed. As a result, it is suppressed that the longitudinal end of the absorbent core 22 (that is, the absorbent article 1a) is bent by being pulled by the folded top sheet 21 and back sheet 23. Moreover, it is prevented that the water-repellent or liquid-impervious back sheet 23 comes into contact with the wearer's skin and the wearing feeling of the absorbent article 1a is lowered.

  Moreover, in the absorbent article 1a, when the absorbent article 1a is attached to the disposable diaper, the fastening portion 231 that extends in the width direction in the vicinity of both ends in the longitudinal direction of the absorbent core 22 is provided on the backsheet 23. The fastening part 231 is joined to the wearer side of the disposable diaper. In the absorbent article 1a, since the center part in the width direction of the fastening part 231 exists outside the both sides in the width direction with respect to the longitudinal direction, the end part in the longitudinal direction of the absorbent article 1a is firmly attached to the disposable diaper. Therefore, it is possible to further reliably suppress the bending at the end portion in the longitudinal direction of the absorbent article 1a attached to the disposable diaper. As a result, the fastening portion 231 is prevented from being peeled from the disposable diaper by being pulled by the bent end portion.

  As in the first embodiment, the absorbent article 1a is capable of suppressing the bending of the end part in the longitudinal direction of the absorbent article that is large in size and relatively easy to bend, and is attached to, for example, a disposable diaper. It can be said that it is particularly suitable for a large-sized auxiliary absorbent device such as a urine absorbing pad.

  As mentioned above, although embodiment of this invention has been described, this invention is not limited to the said embodiment, A various change is possible.

  For example, in the absorbent article 1a according to the second embodiment, the distance between the edge of the absorbent core 22 and the edges of the topsheet 21 and the backsheet 23 is substantially constant over the entire circumference of the absorbent core 22. From the viewpoint of more reliably suppressing the bending of the top sheet 21 and the back sheet 23 in the longitudinal direction, the distance between both edges may be made substantially constant at the longitudinal end of the absorbent article 1a. .

  In the absorbent article which concerns on the said embodiment, from a viewpoint of suppressing the bending of the edge part of a longitudinal direction more reliably, in the edge part of the both sides of a longitudinal direction, the core side edge part 221 of the absorption core 22 is a corner | angular part. It is preferable that the shape of the absorbent article is removed (a shape obtained by removing corners from a shape other than a rectangle may be used). For example, when wearing a disposable diaper, the end of the absorbent article is bent. Even in the end portion on the rear portion 203 side that is difficult for the wearer to visually recognize, the core-side end portion 221 of the absorbent core 22 may have a shape in which the corner portion is removed. Similarly, with respect to the top sheet 21 and the back sheet 23 of the absorbent article 1a according to the second embodiment, the sheet side end portion 211 has a shape (rectangular shape) from which the corner portion is removed only at one end portion in the longitudinal direction. It may be a shape obtained by removing corners from other shapes.

  The fastening portion 231 of the absorbent article according to the above embodiment is not limited to one surface fastener extending in the width direction, and may be a set of a plurality of relatively small surface fasteners. For example, five substantially rectangular hook-and-loop fasteners may be arranged in the width direction to form the fastening portion 231. In this case, in the absorbent article 1a according to the second embodiment, one or three in the center The surface fastener (that is, at least a part of the center portion in the width direction of the fastening portion 231) exists on the outer side (that is, the side away from the intermediate portion 202) in the longitudinal direction than the surface fasteners at both ends in the width direction.

  The fastening part 231 may also be an adhesive such as a hot melt adhesive. In this case, in the absorbent article before being attached to a disposable diaper or the like, a release tape is provided so as to cover the fastening part 231. It is done.

  Absorbent articles include pants-type disposable diapers, open-type disposable diapers that are worn around the waist and the parts that abut against the wearer's abdomen and the abdomen, cloth incontinence pants, etc. It may be used attached to various exterior articles.

It is a top view of the absorptive article concerning a 1st embodiment. It is sectional drawing of an absorbent article. It is a top view of the absorptive article concerning a 2nd embodiment. It is sectional drawing of an absorbent article.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,1a Absorbent article 21 Top sheet 22 Absorption core 23 Back sheet 202 Middle part 211 Sheet side edge part 221 Core side edge part 221a Rectangular 222 Virtual corner | angular part 231 Fastening part

Claims (8)

An absorbent article that receives excrement from a wearer,
An absorber,
A top sheet covering the main surface of the absorbent body on the wearer side;
A backsheet covering the other main surface of the absorber;
With
The length in the longitudinal direction of the absorber is 40 cm or more and 70 cm or less,
The absorbent article according to claim 1, wherein at one end portion in the longitudinal direction, portions on both sides in the width direction of the absorbent body are formed with corners removed. The absorbent article according to claim 1,
The absorbent article, wherein a width in the width direction at a substantially central portion in the longitudinal direction of the absorbent body is 9 cm or more and 30 cm or less. The absorbent article according to claim 1 or 2,
The length in the longitudinal direction and the width direction of each corner portion removed from the rectangle surrounding the one end portion at the one end portion of the absorber is 2 cm or more. Absorbent article. The absorbent article according to any one of claims 1 to 3,
Also in the end part of the top sheet and the back sheet covering the one end part of the absorbent body, the both sides in the width direction have a shape with corners removed. Goods. The absorbent article according to claim 4,
An absorbent article, wherein a distance between an edge at the one end of the absorbent body and an edge at the end of the topsheet and the backsheet is substantially constant. An absorbent article according to any one of claims 1 to 5,
An absorbent article, which is an auxiliary absorbent device attached to a wearer side of an exterior article worn by a wearer. The absorbent article according to claim 6,
The backsheet includes a fastening portion that is present in the width direction in the vicinity of the one end portion of the absorber and faces the exterior article,
An absorptive article, wherein at least a part of a central portion in the width direction of the fastening portion is present outside of the both sides in the width direction with respect to the longitudinal direction. The absorbent article according to any one of claims 1 to 7,
Also in the other end part of the said absorber in the said longitudinal direction, the site | part of the both sides of the said width direction of the said absorber is made into the shape from which the corner | angular part was removed, The absorbent article characterized by the above-mentioned.

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