JP7080048B2 - Worn items - Google Patents

Description

The present invention relates to worn articles such as disposable diapers and disposable diaper covers.

Conventionally, worn articles having an excrement receiving area (stool pocket) are known. For example, Patent Document 1 describes a disposable wearable article having an excrement receiving area including a recess formed by a recess from the front surface side to the back surface side in the central portion of the crotch region and a raised portion defining the peripheral edge of the recess. It has been disclosed. Patent Document 2 discloses a disposable wearable article having an excrement receiving area formed by hollowing out a part of an absorber in a crotch area.

Jikkenhei 5-86320 Gazette Japanese Unexamined Patent Publication No. 2007-21191

According to the worn articles disclosed in Patent Documents 1 and 2, since the excrement can be received in the excrement receiving area, it is possible to prevent the excrement from spreading to the anterior-posterior waist area and polluting the wearer's body. can.

However, in the worn article disclosed in Patent Document 1, a relatively large height difference between the raised portion and the concave portion is formed in order to sufficiently receive the excrement before excretion during wearing. Therefore, when worn, the wearer may feel uncomfortable, and the wearer is bulky and inferior in portability. When the height difference between the raised portion and the concave portion is reduced in order to prevent such a decrease in wearing feeling and portability, the space for receiving excrement becomes small, so that excrement cannot be sufficiently received.

On the other hand, even in the worn article disclosed in Patent Document 2, there is a possibility that a height difference of unevenness may be formed between the hollowed out excrement receiving area and another area, and the wearing feeling may be deteriorated, and the excrement receiving area may be deteriorated. Since there is no absorber, it is not absorbent by itself and cannot absorb and retain the liquid excrement received in the excrement receiving area. In addition, when the excrement receiving area is hollowed out and formed in this way, the absorber must have the required thickness dimension, is relatively thick, and its outline is on the outer surface of the underwear. It may appear and spoil the appearance.

An object of the present invention is to provide a worn article having a liquid-absorbing property and an excrement receiving area capable of forming a receiving space having a relatively sufficient size without impairing the wearing feeling.

In order to solve the above-mentioned problems, the present invention has a vertical direction, a horizontal direction, and a thickness direction, and has a vertical center line that divides the horizontal dimension into two equal parts, a front waist area, and a rear waist area. , A crotch area located between the front and rear waist areas , a liquid-permeable front sheet located on the skin facing surface side, an impermeable back sheet located on the non-skin facing surface side, and the front surface. It relates to a worn article including an absorber interposed between the sheet and the back surface sheet and located at least in the crotch area.

The worn article according to the present invention has an excretion receiving area in which the absorber is island-shaped and has a liquid absorbing property, and a liquid absorbing peripheral area located so as to surround the excrement receiving area. The excretion receiving region is located so as to overlap the longitudinal center line, and the absorber has an absorbent core containing superabsorbable polymer particles and contains the superabsorbable polymer particles in the excretion receiving region. The rate is lower than the content of the super-absorbent polymer particles in the peripheral region, and the difference between the thickness dimension of the excretion receiving region and the thickness dimension of the peripheral region before absorption of body fluid is 1.5 gf / cm. ² The thickness dimension of the surface sheet is smaller than or equivalent to the thickness dimension of the surface sheet under a load, and the thickness dimension of the excretion receiving region is smaller than the thickness dimension of the peripheral region after the absorption of the body fluid of the absorber. The difference in thickness between the excretion receiving area and the peripheral area after the absorption of the body fluid of the absorber is the difference between the excretion receiving area and the peripheral area before the absorption of the body fluid of the absorber. It is characterized by being larger than the difference in thickness and dimension.

The worn article according to the present invention has the following preferred embodiments.
(1) Before the absorption of the body fluid of the absorber, the thickness dimension of the excrement receiving region is smaller than the thickness dimension of the peripheral region. In such a case, the wearing assistant can confirm the existence area of the excrement receiving area before use, and can give a sense of security against the leakage of excrement.
( 2 ) The excrement receiving area has a plurality of dot-shaped compression recesses. In such a case, the body fluid is more easily drawn in the excrement receiving area, the rigidity is high, and the deformation of the excrement receiving area in the wearing state can be suppressed.
( 3 ) The total area ratio of the compressed recess to the total area of the excrement receiving area is 10 to 65%. In such a case, the compression recess exerts the effect of drawing in the required body shape, and the rigidity of the excrement receiving area does not become too high, which does not give the wearer a sense of discomfort.
(4) The absorber includes a first core cover sheet that covers the absorbent core and the skin facing surface of the absorbent core, and a second core cover sheet that covers the non-skin facing surface side of the absorbent core. The surface sheet, the first core cover sheet, and at least one of the second core cover sheets are formed of a fibrous nonwoven fabric containing thermoplastic fibers. In such a case, when heat embossing is performed together with the absorber from the surface sheet side, the bonding strength between the sheets in which the thermoplastic fibers are fused and laminated is improved.
( 5 ) An adhesive is applied to a portion of the inner surface of the surface sheet that faces the compression recess in the excrement receiving area in the thickness direction. In such a case, the surface sheet can be deformed in a concave shape along the compression recess even when the compression recess is formed only in the absorber, and the outline of the excrement receiving area becomes clearer before wearing. Can be visually recognized.
( 6 ) The peripheral area includes a first absorption portion located along at least a part of the outer peripheral edge of the excrement receiving region, and a second absorption portion extending outward from the outer periphery of the first absorption portion. The content of the superabsorbent polymer particles in the first absorbing portion is higher than the content of the superabsorbable polymer particles in the second absorbing portion. In such a case, after the body fluid is absorbed by the absorber, the superabsorbable polymer particles swell and the first absorbing portion becomes thicker than the second absorbing portion, so that the first absorbing portion and the excrement receiving region are formed. A larger receiving space is defined between them.
( 7 ) It further has a transverse center line that divides the vertical dimension of the worn article into two equal parts, and the excretion receiving region is in the crotch region and the anterior waist region side or the posterior waist region with respect to the transverse center line. Positioned laterally, the first absorptive section extends in the longitudinal direction outside the lateral direction of the excretion receiving area, the first and second longitudinal sections, and the longitudinal portion of the excretion receiving area. It has a transverse portion extending in the lateral direction on the outside of the direction, and has a shape concave toward the transverse center line. In such a case, the first absorbing portion can function as a barrier for suppressing the movement of excrement in the excrement receiving area from the crotch area side to the waist opening side of the anterior waist area or the waist opening side of the posterior waist area. ..
( 8 ) The first absorbing portion is formed of only the first and second longitudinal portions or only the transverse portion. In such a case, the first absorption unit can function as a barrier for suppressing the movement of excrement in the excrement receiving area to the outside in the horizontal direction or the outside in the vertical direction.
( 9 ) The hold area for holding at least one of the anterior-posterior waist areas is further provided, and the excrement receiving area is located inside the hold area in the vertical direction, and the hold area is located inside the hold area. It does not overlap with the area. In such a case, the hold area can prevent the excrement receiving area from being pressed against the wearer's body and the receiving space from collapsing.
( 10 ) Further has a pair of barrier cuffs extending in the vertical direction on the skin-facing surface side of the surface sheet, and the barrier cuffs are laid down on the skin-facing surface side of the surface sheet in the vertical direction. It has an extending medial edge, the excrement receiving area is located between the medial edges of the barrier cuff and does not overlap the medial edge. In such a case, it is possible to effectively suppress lateral leakage of excrement that could not be absorbed and retained beyond the capacity of the excrement receiving area.
( 11 ) The excrement receiving area has a colored portion visible from the skin facing surface side or the non-skin facing surface side. In such a case, the wearer and the wearing assistant can be made to recognize the excrement receiving area, and a sense of security can be given to the side leakage of the excrement and the adhesion of the excrement to the body.

In at least one embodiment of the worn article according to the present invention, the absorber is island-shaped and has a liquid-absorbing excrement receiving area, and is between the excrement receiving area and the peripheral area before the absorption of the body fluid. Since no step is formed or only a relatively small step is formed in, there is no risk of giving the wearer a sense of discomfort. On the other hand, after the absorption of body fluid, a relatively deep and large receiving space is formed in the area where the excrement receiving area exists, so that the excrement is absorbed and retained in the excrement receiving area and the diffusion of the excrement is suppressed. It is possible to prevent the body from becoming dirty due to excrement. In addition, after the body fluid is absorbed, the difference in thickness between the excrement receiving area and the surrounding area becomes larger than before the body fluid is absorbed. By visually recognizing it, the assistant can give a sense of security against the leakage of excrement.

The perspective view of the disposable diaper which concerns on 1st Embodiment which shows as an example of the wear article which concerns on this invention. Partially broken unfolded plan view of the diaper. Top view of the absorber. FIG. 2 is a cross-sectional view taken along the line IV-IV of FIG. (A) A partially enlarged view of the region surrounded by the alternate long and short dash line V (a) in FIG. 4 before absorption of body fluid. (B) Partially enlarged cross-sectional view similar to FIG. 5 (a) after absorption of body fluid. Unfolded perspective view of the diaper after absorption of body fluid. The plan view of the diaper in the 2nd Embodiment of this invention. The plan view of the absorber of the diaper which concerns on 3rd Embodiment of this invention. (A) A cross-sectional view of the diaper according to the fourth embodiment of the present invention as in FIG. 5 (a). (B) A partially enlarged cross-sectional view similar to FIG. 5 (b) according to the fourth embodiment of the present invention.

<First Embodiment>
Referring to FIGS. 1 and 2, the disposable diaper 10, which is an example of the disposable worn article according to the present invention, has a vertical direction Y, a horizontal direction X intersecting the vertical direction X, a thickness direction Z, a skin facing surface and the like. It has a non-skin facing surface on the opposite side, a longitudinal center line P that bisects the dimension in the horizontal direction X, and a transverse center line Q that bisects the dimension in the vertical direction Y, and is almost symmetrical with respect to the longitudinal center line. The anterior waist region 11, the posterior waist region 12, and the crotch region 13 located between the anterior waist region 11 and the posterior waist region 12 are included.

The diaper 10 has front and rear end portions 16 and 17 facing the vertical direction Y and extending in the horizontal direction X, and both side edge portions 18 and 19 facing the horizontal direction and extending in the vertical direction. The bilateral edges 18, 19 are formed in a concave shape so as to fit the wearer's thigh.

The diaper 10 is interposed between the liquid-permeable front sheet 21 located on the skin facing surface side, the impermeable back sheet 22 located on the non-skin contact surface side, and the front and back sheets 21 and 22. A fixed liquid-absorbent absorber 25, a leak-proof sheet 26 interposed between the absorber 25 and the back surface sheet 22, and a pair of barrier cuffs fixed to the skin-facing surface side of the front surface sheet 21. 27 and more are included.

The front surface sheet 21 and the back surface sheet 22 are various known non-woven fabrics such as SMS fiber non-woven fabric, spunbond fiber non-woven fabric, and air-through fiber non-woven fabric, or fiber non-woven fabric and plastic film (in the case of a front sheet, those having porosity). ) And the like are preferably used. The leakproof sheet 26 is preferably made of a hydrophobic and water resistant sheet material, for example, a hydrophobic fibrous nonwoven fabric or a breathable plastic film.

Referring to FIGS. 2 and 3, the absorber 25 has a semi-rigid panel shape shaped to a required shape, and is between the front-rear edge 25a and 25b extending laterally and the front-rear edge 25a and 25b. It has both side edges 25c and 25d extending in the vertical direction. The absorber 25 was formed from a mixture of fluff wood pulp and super absorbent polymer particles (SAP particles) that are water-insoluble and have an absorbent capacity of tens to hundreds of times their own weight. It has an absorbent core 30 and a core cover sheet 31 that covers the absorbent core 30.

The core cover sheet 31 is a sheet for retaining the shape of the absorbent core 30 and diffusing body fluid, and is formed of a relatively thin hydrophilic sheet, tissue paper, or the like. The core cover sheet 31 has a first core cover sheet 31a that covers the skin-facing surface side of the absorbent core 30, and a second core cover sheet 31b that covers the non-skin facing surface side of the absorbent core 30. The absorbent core 30 and the first and second core cover sheets 31a and 31b covering the absorbent core 30 are joined to each other via a hot melt adhesive (not shown) applied to either of the facing surfaces thereof. ing. As long as the core cover sheet 31 covers the entire absorbent core 30, the first core cover sheet 31a and the second core cover sheet 31b may be integrally formed.

The barrier cuff 27 is located laterally medial to the proximal edge 27a, the proximal edge 27a, which is anchored to the outside along both sides of the absorber, and the medial edge is folded away. It has an edge portion 27b and both end fixing portions 27c and 27d in the vertical direction. A cuff elastic body 28 extending in the length direction is attached to the inside of the distal edge portion 27b in an extended state, and the distal edge portion 27b is separated above the surface sheet 21 by the contraction of the cuff elastic body 28.

At both side edges 18 and 19 of the diaper 10, leg elastic bodies 29 extending along both side edges of the crotch region 13 are arranged between the barrier cuff 27 and the back surface sheet 22 so as to be retractably attached. The leg elastic body 29 has a ribbon shape having a predetermined width and fits the body more gently than when it is formed of a thread-like elastic material.

The diaper 10 has a pair of tape fasteners 40, and the tape fasteners 40 are attached to both side edges of the rear waist region 12. These tape fasteners 40 may be attached to at least one of both side edges of the posterior waist region 12, and the other may be pre-connected. The tape fastener 40 has a fixing portion 41 interposed between the barrier cuff 27 forming the both side edges of the rear waist region 12 and the back surface sheet 22, and laterally outward from both side edges of the rear waist region 12. It has an extending free portion 42. On the skin-facing surface side of the free portion 42, a fastening region 43 having a hook group of mechanical fastener elements is located.

A receiving sheet (target tape) 45 having a loop group of mechanical fasteners and defining a receiving area of the tape fastener 40 is attached to the outer surface of the back surface sheet 22 in the front waist region 11. As shown in FIG. 1, a pair of tape fasteners 40 fixed to both side edges of the rear waist region 12 is hung on the front side, and a fastening area is attached to a pair of receiving sheets 45 located on the outer surface of the front waist region 11. By locking the 43 detachably, the waist opening 7 and the pair of leg openings 8 are defined.

A band-shaped waist elastic body 46 extending laterally is arranged between the fixing portions 41 of the tape fastener 40 in the rear waist region 12. The waist elastic body 46 is located at the rear end portion 17 of the diaper 10, and is attached between the front surface sheet 21 and the back surface sheet 22 so as to be retractable in a laterally extended state. By arranging the waist elastic body 46 at the rear end portion 17, the rear waist region 12 is fitted to the back of the wearer to prevent misalignment during wearing, and the waist is used when the tape fastener 40 is hung on the front side. Since the elastic action of the elastic body 46 can be utilized, the fastening operation can be easily performed.

In the open type diaper 10 according to the present embodiment, the region between the tape fasteners 40 is formed by fastening the tape fastener 40 to the waist even when the waist elastic body 46 is not arranged. Since it is an area that is pulled in the circumferential direction and pressed against the wearer's body, it can be said that the virtual band-shaped area connecting the fixed portions 41 of the tape fastener 40 is a hold area that is stably held by the wearer's body. .. On the other hand, in the case of a pants-type diaper in which both side edges of the anterior-posterior waist region are previously connected to each other via a side seam, the waist elastic region is composed of a plurality of waist elastic bodies arranged in the anterior-posterior waist region. The area between the side seams is the hold area.

With reference to FIGS. 2 to 4 and FIGS. 5 (a) and 5 (b), the absorber 25 is located so as to surround the excrement receiving area 50 which is island-shaped and has a liquid absorbing property and the excrement receiving area 50. It has a liquid-absorbent peripheral area 51. The excrement receiving area 50 is located at least in the crotch area 13 so as to overlap the longitudinal center line P, and has a substantially octagonal shape. As long as the absorber 25 has a sea-island structure including an excrement receiving area 50 constituting the island area and a peripheral area 51 constituting the sea area surrounding the island area, the excrement receiving area 50 has another polygonal shape. It may have various known shapes such as a circular shape and an elliptical shape. However, as in the present embodiment, since the excrement receiving area 50 has a polygonal shape, the external force applied to the outer peripheral edge of the excrement receiving area 50 during wearing is dispersed to disperse the external force for deforming the body fluid. The difference in thickness and dimension between the excrement receiving area 50 and the peripheral area 51 after absorption can be surely realized in the product.

In the excrement receiving area 50, the content of SAP particles contained in the absorbent core 30 is lower than that in the peripheral area 51, and the absorbing power thereof is smaller than that in the peripheral area 51. The peripheral region 51 includes a first absorbing portion 52 located along at least a part of the outer peripheral edge of the excrement receiving region 50, and a second absorbing portion 53 extending outward from the outer periphery of the first absorbing portion 52. The content of SAP particles in the first absorption unit 52 is higher than the content of SAP particles in the second absorption unit 53. Therefore, the first absorption unit 52 has a higher absorption capacity than the second absorption unit 53. In the present embodiment, the first absorption unit 52 has a shape that surrounds the entire outer peripheral edge of the excrement receiving area 50. However, as long as the technical effect of the present invention described later is exhibited, the first absorption unit 52 may surround at least a part of the excrement receiving area 50.

In the excrement receiving area 50, a plurality of dot-shaped compression recesses 60 that are concave from the skin facing surface side to the non-skin facing surface side of the absorber 25 are arranged. The compression recesses 60 are evenly arranged in almost the entire area of the excrement receiving area 50. Further, the portion of the excrement receiving area 50 where the compression recess 60 is not located is also slightly compressed and its thickness is smaller than that of the peripheral area 51, so that the excrement receiving area 50 as a whole It is thinner than the peripheral area 51.

Referring to FIG. 5A, in the state before absorption of the body fluid of the absorber 25, the excrement receiving area 50 is thinner than the peripheral area 51, and its thickness dimension (compression recess 60 is arranged). The thickness dimension of the non-existent portion) D1 is smaller than the thickness dimensions D2 and D3 of the peripheral region 51. The thickness dimensions D2 and D3 of the peripheral region 51 have a thickness dimension D2 of the first absorbing portion 52 and a thickness dimension D3 of the second absorbing portion 53. Here, the thickness dimension D1 of the excrement receiving area 50 and the thickness dimensions D2 and D3 of the peripheral area 51 are the thickness dimensions of each region of the absorber 25 including the absorbent core 30 and the core cover sheet 31. means.

As described above, since the thickness dimension D1 of the excrement receiving area 50 is smaller than the thickness dimensions D2 and D3 of the peripheral area 51, the excrement receiving area 50 is provided on the inner surface of the diaper 10 via the surface sheet 21. The outline of the outline appears. Further, when the wearing assistant presses the excrement receiving area 50 with a relatively strong force, it is possible to visually confirm that a step is formed between the excrement receiving area 50 and the peripheral area 51. can. As a result, the wearer and / or the wearer is made to recognize that the absorber 25 located in the crotch area 13 has an excrement receiving area 50 for absorbing and holding excrement. It is possible to give a sense of security against the leakage of excrement.

Further, the difference between the thickness dimension D1 of the excrement receiving area 50 and the thickness dimensions D2 and D3 of the peripheral area 51 before the absorption of the body fluid is 1.5 gf / cm ² load (the diaper 10 before use by the wearing assistant). It is smaller than or equal to the thickness dimension of the surface sheet 21 under the load) under the condition that the skin facing surface side of the surface is touched by stroking it with a fingertip. For example, before using the diaper 10, the wearing assistant may touch the side of the diaper 10 facing the skin with a fingertip to check the touch. In such a case, even when the wearing assistant touches the existing area of the excrement receiving area 50 with the fingertip through the surface sheet 21, it is possible to give a tactile sensation close to flat with a small degree of unevenness, and the wearer such as an infant or the like. It can give the impression that it does not give a sense of discomfort. As described above, when the surface sheet 21 has a required thickness dimension under a load of 1.5 gf / cm ² , the surface sheet 21 is a relatively bulky fiber-woven fabric such as an air-through fiber non-woven fabric and a spunlace fiber non-woven fabric. It is preferably formed from a sheet.

Referring to FIG. 5B, after the absorption of the body fluid of the absorber 25, the SAP particles contained in the absorbent core 30 absorb the body fluid and swell, so that the entire absorber 25 is compared with that before the absorption of the body fluid. The thickness dimension of is increased. In the excrement receiving area 50, since the content of SAP particles is relatively low, the change in thickness and dimension of SAP particles is relatively small even when the SAP particles absorb body fluid and swell. On the other hand, since the peripheral region 51 has a higher content of SAP particles than the excrement receiving region 50, the change in the thickness dimension becomes relatively large as the SAP particles absorb the body fluid and swell.

Therefore, the difference in the thickness dimension between the excrement receiving area 50 and the peripheral area 51 after the absorption of the body fluid of the absorber 25 is the thickness between the excrement receiving area 50 and the peripheral area 51 before the absorption of the body fluid of the absorber 25. It is larger than the difference in dimensions. Therefore, after the body fluid is absorbed by the absorber 25, the thickness dimension D1 of the excrement receiving area 50 becomes relatively smaller than the thickness dimensions D2 and D3 of the peripheral area 51, and a large step is formed between them. In the existing area of the excrement receiving area 50 of the diaper 10, a receiving space S that is concave from the skin facing surface side to the non-skin facing surface side is formed. As a result, more excrement can be absorbed and retained in the excrement receiving area 50, and the thickness of the excrement receiving area 50 and the peripheral area 51 increases as the amount of body fluid absorbed by the absorber 25 increases. Since the difference in dimensions becomes large and the capacity of the receiving space S becomes larger, more excrement can be absorbed and retained.

Before the absorber 25 absorbs the body fluid, a large step is not formed between the excrement receiving area 50 and the peripheral area 51, and the receiving space S is not formed in the excrement receiving area 50. Compared with the case where a large step is formed in advance in the regions 50 and 51, the wearer does not feel uncomfortable and the wearing feeling is excellent.

As described above, after the absorber 25 has absorbed the body fluid, a large step is generated between the excrement receiving area 50 and the peripheral area 51, and the receiving space is present in the excrement receiving area 50 of the crotch area 13. S is formed. Usually, infants wear underwear such as pants after wearing diapers, so it is difficult for the wearing assistant to perceive the odor when urinating. , It is often left as it is for a long time. Therefore, when the wearer defecates in the diaper, in many cases, urination has already been performed. Therefore, when the wearer wears a worn item that does not have a space for receiving excrement, the urination causes the SAP particles to swell. Therefore, a space for holding loose stool is not formed between the absorber and the body, and the loose stool may contaminate the body or the loose stool may leak to the outside along the back. In the diaper 10 according to the present embodiment, the receiving space S is formed in the existence area of the excrement receiving area 50 of the diaper 10 to absorb and hold the loose stool. Can be suppressed.

Since the excrement receiving area 50 itself has absorbency, it can absorb body fluids such as loose stool and urine absorbed and retained in the receiving space S. As described above, not only the peripheral area 51 but also the excrement receiving area 50 defining the receiving space S has absorbency, so that the absorber 25 is compared with the case where the excrement receiving area 50 does not have absorbency. The overall absorption performance can be improved. Further, even if it takes time to absorb loose stool or the like, or even if it takes time to be repeatedly excreted and completely absorbed, the excrement receiving area 50 is quickly and temporarily held in the receiving space S. And it can be absorbed by the absorbing power of the peripheral area 51.

Referring to FIGS. 5 (a), 5 (b) and FIG. 6, in the present embodiment, the peripheral region 51 is a first absorption unit 52 located along at least a part of the outer peripheral edge of the excrement receiving region 50. The second absorption unit 53 extends outward from the outer periphery of the first absorption unit 52, and the content of SAP particles in the first absorption unit 52 is the content of SAP particles in the second absorption unit 53. The first absorbing portion 52 has a shape that is raised further upward than the second absorbing portion 53.

Since the thickness dimension D2 of the first absorbing portion 52 is larger than the thickness dimension D3 of the second absorbing portion 53, the step with the excrement receiving area 50 surrounded by the first absorbing portion 52 is further increased. A relatively deep and large receiving space S is formed. Therefore, a large amount of excrement can be retained and contained as compared with the case where the peripheral area 51 does not have the first absorption unit 52. However, the first absorption unit 52 of the peripheral area 51 is an option, and there is a case where the peripheral area 51 does not have the first absorption unit 52, that is, there is no difference in the content of SAP particles in the entire peripheral area 51. However, since the content of the SAP particles in the peripheral region 51 is higher than the content of the SAP particles in the excrement receiving region 50, the excrement receiving region 50 is thicker than the peripheral region 51 after the body fluid is absorbed by the absorber 25. The particle size becomes smaller and the receiving space S is formed.

Regarding the content of SAP particles in each region 50 and 51 of the absorber 25, the content of SAP particles in the second absorption portion 53 of the peripheral region 51 is 20 to 60%, which is the required absorption of the absorber 25. It can be set freely according to the force. The content of the SAP particles in the excrement receiving area 50 is lower than the content of the SAP particles in the second absorption unit 53, for example, 3.0 to 10.0%, and the SAP in the first absorption unit 52 in the peripheral area 51. The content of the particles is higher than the content of the SAP particles of the second absorption unit 53, for example, 30 to 70%.

Here, when the liquid retention amount of the absorber 25 is 300 to 600 g, the liquid retention amount is said to be 100% when the liquid retention amount reaches the limit. The thickness dimensions D1, D2, and D3 of the regions 50 and 51 after the body fluid absorption of the absorber 25 are measured by the measurement method described later in a state where the liquid retention amount of the absorber 25 reaches at least 30%. ..

The excrement receiving area 50 is preferably located in the crotch area 13 deviated from the anterior waist area 11 side or the posterior waist area 12 side with respect to the transverse center line Q. That is, the excrement receiving area 50 is either a front area extending from the transverse center line Q to the anterior waist area 11 side or a posterior area extending from the transverse center line Q to the posterior waist area 12 side in the crotch area 13. It suffices if it is placed in the crab.

The excrement receiving area 50 preferably faces the vicinity of the wearer's excretion port in order to directly hold and contain the excrement, and the crotch area 13 is biased toward the front waist area 11 side of the wearer. By facing the vicinity of the urinary device and biasing toward the posterior waist region 12 of the crotch region 13, it is possible to face the vicinity of the wearer's anus.

The excrement receiving area 50 may be located at least in the crotch area 13, and a part thereof may be located in the anterior waist area 11 or the posterior waist area 12. Further, the excrement receiving area 50 has an area required for absorbing and retaining a relatively large amount of excrement, and is 25 to 80% of the size of the anterior area or the posterior area of the crotch area 13. It is preferable to have it.

Since the excrement receiving area 50 has a plurality of compression recesses 60, the density of the absorbent core 30 is locally increased, so that the body fluid can be easily drawn into the inside and the body fluid can be absorbed more efficiently. In addition, the required rigidity is imparted, and the excrement receiving area 50 can be prevented from being twisted or deformed during wearing. Further, as compared with the case where the excrement receiving area 50 is uniformly compressed over a wide range, by arranging the plurality of compression recesses 60 in a scattered pattern, when the SAP particles are swollen by absorbing the body fluid, the SAP particles are more uniformly compressed. It is possible to prevent the absorber 25 from swelling and becoming a distorted shape.

Further, the total area ratio of the plurality of compressed recesses 60 to the total area of the excrement receiving area 50 is preferably 10 to 65%. When the total area ratio of the compression recess 60 exceeds 65%, the rigidity of the excrement receiving area 50 becomes relatively high, which may give the wearer a sense of discomfort during wearing. On the other hand, when the total area ratio of the compression recess 60 is less than 10%, it becomes difficult to visually recognize the external contour of the excrement receiving area 50 through the surface sheet 21 when worn, or a desired effect of drawing in body fluid can be obtained. It may not be possible to exert it.

The plurality of compression recesses 60 of the excrement receiving area 50 are formed only in the absorber 25, and are heat embossed (debossed) from the upper surface of the surface sheet 21 in a state where the absorber 25 and the surface sheet 21 are laminated. The compression recess 60 may be formed in the surface sheet 21 and the absorber 25.

In such a case, the first core cover sheet 31a, which is in contact with the surface sheet 21, the surface sheet 21 and is located on the skin-facing surface side of the absorbent core 30, and the second core cover sheet 31a, which is located on the non-skin-facing surface side of the absorbent core 30. It is preferable that at least one sheet of the core cover sheet 31b is formed of a fibrous nonwoven fabric containing thermoplastic fibers. Thereby, it is possible to improve the bonding strength between the sheets 21, 31a, 31b and the absorbent core 30 in which the thermoplastic fibers are fused and laminated when the heat embossing is applied.

In addition, when a relatively deep compression recess is usually formed in an absorber containing SAP particles by thermal embossing, the embossed spin comes into relatively strong contact with the SAP particles and a part of the core cover sheet is torn. However, since the content of SAP particles in the excrement receiving area 50 is low, a part of the core cover sheet 31 is not torn during the heat embossing process. Therefore, it is possible to form the compression recess 60 having a depth deeper than usual.

Referring to the enlarged view of FIG. 4 again, the adhesive 33 (hot melt adhesive) is applied to the portion of the inner surface of the surface sheet 21 facing the compression recess 60 of the excrement receiving region 50 in the thickness direction. ing. As described above, since the adhesive 33 is applied to the portion of the inner surface of the surface sheet 21 facing the compression recess 60, the surface sheet 21 is formed even when the compression recess 60 is formed only on the absorber 25. Can be deformed in a concave shape along the compression recess 60, and the outline of the excrement receiving area 50 can be made clearer and visually visible before wearing.

Referring to FIG. 2, the excrement receiving area 50 is arranged between the longitudinally extending inner edges of the barrier cuff 27, that is, the distal edge 27b, in the inverted state of the barrier cuff 27, and overlaps with the inner edge. Not. Since the excrement receiving area 50 is arranged between the distal edges 27b of the barrier cuff 27, the excrement that could not be absorbed and retained beyond the capacity of the excrement receiving area 50 leaks sideways. Can be effectively suppressed. The longitudinally extending inner edge of the barrier cuff 27 is, as shown in the illustrated example, the distal edge 27b when the distal edge 27b of the barrier cuff 27 is laterally laid down and fixed. On the other hand, when the distal edge 27b of the barrier cuff 27 is fixed in a laterally folded state, the folded and fixed portion (the inner edge of the proximal edge 27a). Means. Therefore, when the barrier cuff 27 is fixed in a laterally folded state, the excrement receiving area 50 is arranged between the folded and fixed portions so as not to overlap with the barrier cuff 27. ..

The excrement receiving area 50 is located inside the holding area for holding the posterior waist area 12 in the vertical direction, and does not overlap with the holding area in a plan view. As described above, since the excrement receiving area 50 does not overlap with the hold area, it is possible to prevent the excrement receiving area 50 from being pressed against the skin by the hold area and the receiving space S from collapsing. Further, when the excrement receiving area 50 is biased toward the front waist area 11 of the crotch area 13, it is preferable that the excrement receiving area 50 does not overlap with the hold area for holding the front waist area 11.

Although not shown, the excrement receiving area 50 preferably has a colored portion that can be visually recognized from the outside via the front surface sheet 21 or the back surface sheet 22. In addition to the pressure-sensitive colorant, a colorant that is colored by urine can be used for the colored portion.

When a pressure-sensitive colorant is used, in the manufacturing process, a colorless colorant wrapped in microcapsules is applied to the surface of the absorbent core 30 in the excrement receiving area 50 to form a compression recess 60. During the heat embossing process, the microcapsules are torn and can be colored red, blue, etc. In such a case, the position of the compression recess 60 and the position of the colored portion coincide with each other in the excrement receiving area 50, so that the visibility of the colored portion is improved from the inner surface side or the outer surface side of the diaper 10. By coloring the excrement receiving area 50 before wearing, the wearer and the wearing assistant are made to recognize the excrement receiving area 50, and the excrement is prevented from leaking sideways and adhering to the body. It can give a sense of security.

When a colorant that develops color by contact with urine is used, an indicator (for example, a PH indicator) or the like is applied to the front surface and / or the back surface of the absorbent core 30 in the excrement receiving area 50, and the absorbent core is used. It can be colored by diffusing the body fluid into 30. In such a case, the colorant has a function as an indicator indicating that urination has occurred. Normally, the indicator for detecting urination has an embodiment in which a colorant is contained in a hot melt adhesive extending in a line and arranged, and the colored area thereof is relatively small, but the entire excrement receiving area 50 is formed. Since the colored portion is located on the diaper, the colored area becomes relatively large and can be easily visually recognized from the inner and outer surfaces of the diaper 10. Further, since the excrement receiving area 50 is a region where the excrement is absorbed and retained, the coloring agent is easily colored by touching the body fluid, and a wide colored portion is formed in the relatively deep receiving space S. In combination with its three-dimensional shape, the visibility of the colored part is further improved. Further, the diaper 10 is provided with emotional value by having a partially colored portion, and can also function as an alignment when the colored portion is worn. As the coloring means, in addition to applying a hot melt adhesive containing a colorant, a colored fiber layer may be used.

The color difference ΔE between the excrement receiving area 50 and the uncolored peripheral area 51 is 5.0 or more so that the colored portion of the excrement receiving area 50 can be visually recognized from the inner and outer surfaces of the diaper 10. Is preferable. The color difference ΔE can be obtained by comparing the numerical values based on the CIE1976 (L * a * b *) color space defined in, for example, JISZ8729 or the like using a commercially available colorimeter.

Table 1 below shows the thickness dimension (mm) before absorption of artificial urine and the thickness dimension (mm) after absorption of artificial urine of Examples 1 to 5 and Comparative Examples 1 to 3 of the diaper 10 according to the present invention. , The diffusion area of artificial loose stool (cm ² ) and the amount of artificial loose stool adhered (g) were evaluated. In the diapers of Examples 1 to 5 and Comparative Examples 1 to 3, the absorber has a mass of 17 g / m covering the upper and lower surfaces of the absorbent core formed from a mixture of SAP particles and pulp fibers, and the upper and lower surfaces of the absorbent core, respectively. It was composed of upper and lower core cover sheets formed of ² tissue papers. Further, a surface sheet made of an air-through fiber non-woven fabric having a mass of 22 g / m ² was bonded to the upper surface of the absorber via a hot melt adhesive.

As the diapers of Comparative Examples 1 to 3, those having almost the same content of SAP particles in the absorber were prepared, but excreted by designating the same position and size as the excrement receiving area 50 of Examples 1 to 5. It was designated as the first absorption part and the second absorption part in the substance receiving area and the peripheral area.

<Example 1>
In the absorbent core 30 of the absorber 25, the mass of the SAP particles in the excrement receiving region 50 is 8.7 g / m ^{2, and the mass of the SAP particles in the first absorbing portion 52 in the peripheral region 51 is 194.6 g / m 2 .} The mass of the SAP particles in the second absorption portion 53 of the peripheral region 51 is 132.7 g / m ² , the mass of the pulp fiber in the excrement receiving region 50 is 246.2 g / m ² , and the mass of the first absorption portion 52 in the peripheral region 51. The mass of the pulp fiber was 392.8 g / m ² , and the mass of the pulp of the second absorbing portion 53 of the peripheral region 51 was 340.4 g / m ² .

Further, the arrangement pattern of the compression recess 60 located in the excrement receiving area 50 of the absorber 25 of Example 1 is a plurality of dots, and the compression recess 60 is a non-skin facing surface from the skin facing surface side of the absorber 25. It is formed so as to be concave toward the side, and the surface sheet 21 is not compressed by the compression recess 60.

<Example 2>
The diaper 10 according to the second embodiment has the same configuration as that of the first embodiment except that the mass of the SAP particles of the absorbent core 30 is reduced as a whole.

<Example 3>
As the diaper 10 according to the third embodiment, the compression recesses 60 formed in the absorbent core 30 are arranged in a grid pattern formed by intersecting a plurality of compression concave lines extending continuously and linearly instead of in a dot shape. Made.

<Example 4>
As the diaper 10 according to the fourth embodiment, compression embossing was performed on the surface sheet 21 to prepare a diaper having a plurality of dot-shaped compression recesses 60 in which the surface sheet 21 and the absorber 25 were compressed.

<Example 5>
The diaper 10 according to the fifth embodiment has the same configuration as that of the first embodiment except that the pulp fiber content of the absorbent core 30 is reduced as a whole.

<Comparative Example 1>
Comparative Example 1 was a diaper in which the content of SAP particles was almost the same as the entire absorber and no compression recess was formed in the excrement receiving area.

<Comparative Example 2 and Comparative Example 3>
Comparative Examples 2 and 3 were diapers in which the content of SAP particles in the absorber as a whole was almost the same and compression recesses were formed in the excrement receiving area in the same arrangement pattern as in Example 1. Further, the absorber of Comparative Example 2 is obtained by embossing the absorber of Comparative Example 1 to form a dot-shaped compression recess, and the absorber of Comparative Example 3 is the absorber of Comparative Example 1. The mass of the absorbent core in the embossed region is lower than that in the other regions, and embossing is performed to form a dot-shaped compression recess.

<Measurement of thickness dimension of each area before and after absorption of artificial urine>
A commercially available thickness gauge (for example, model FS-60DS manufactured by Daiei Kagaku Seiki Seisakusho Co., Ltd.) was used for measuring the thickness dimension of each region. The measurement terminal diameter (for example, 15 cm ² ) of the thickness gauge was adjusted according to the size of the sample so as to be smaller than the measurement site, and measured under a load of 5.0 gf / cm ² . Further, regarding the thickness dimension of the surface sheet 21 under a low load assuming that the wearing assistant touches the skin facing surface side of the diaper 10 with a fingertip by the same measurement method, 1. It was measured under a load of 5 gf / cm ² .

Absorbers were taken out from the diapers of Examples 1 to 5 and Comparative Examples 1 to 3, and the thickness dimension (thickness dimension) of each of the excrement receiving area, the first absorbing part in the peripheral area, and the second absorbing part in the peripheral area with a thickness gauge. mm) was measured and used as the thickness dimension of each region before absorption of artificial urine. Next, after immersing the absorber in a pad containing 120 g of artificial urine with the skin facing side facing down to uniformly absorb the artificial urine (the amount of liquid retained is 30% or more), the SAP particles are sufficiently added. It was allowed to stand for 5 minutes to swell. After 5 minutes, the thickness dimension (mm) was measured with a thickness gauge for each of the area corresponding to the excrement receiving area, the first absorption part in the peripheral area, and the second absorption part in the peripheral area, and after absorption of artificial urine. The thickness dimension of each area in. For artificial urine, for example, ion-exchanged water, urea, sodium chloride, magnesium sulfate, calcium chloride and a dye (Blue No. 1) prepared in an arbitrary ratio were used.

<Measurement of diffusion area of artificial loose stool>
After the measurement of the thickness dimension after absorption of artificial urine is completed, 15 g of artificial loose stool is placed in the center of the excrement receiving area, a 10 cm square filter paper (30 g) is placed on it, and the bottom area is 10 cm × 10 cm. A weight having a mass of 2.0 kg was placed on a filter paper and allowed to stand for 1 minute. After standing still, the weight was removed and the change in the weight of the filter paper, that is, the difference between the weight of the filter paper before the measurement and the weight of the filter paper after the measurement was calculated and used as the amount of artificial loose stool attached (g). Further, after removing the filter paper from the excrement receiving area, a 10 cm square white paper is arranged so as to be separated above the absorber and to cover the entire excrement receiving area. For the artificial stool, for example, cellulose powder, bentonite, ion-exchanged water, and a dye (red) prepared in an arbitrary ratio were used.

Next, the diffused state of artificial stool in the vicinity of the excretion receiving area of the absorber is photographed with a digital camera so that the white paper is reflected on the screen, and the white paper is used as a reference based on the obtained digital image. The area (cm ² ) of the diffused part (red part) of the artificial loose stool was calculated as. Specifically, a digital image was color-printed on copy paper, the paper portion and the diffusion region portion were cut out, and the area of the diffused portion (cm ² ) was calculated from the weight ratio of the cut out paper pieces.

Referring to Table 1, Examples 1 to 5 have an excrement receiving area 50 having a low content of SAP particles, and the thickness dimension of the first absorbing portion 52 of the peripheral area 51 after absorption of artificial urine is excreted. Since the thickness of the substance receiving area 50 is 3.1 to 4.9 times, a relatively deep receiving space S is formed in the area where the excrement receiving area 50 of the absorber 25 exists. Therefore, the diffusion area of the artificial loose stool was 39.4 to 43.6 cm ² , which was relatively small, and the adhesion amount of the artificial loose stool was 3.7 to 4.3 g, which was relatively small. Further, comparing Example 3 and Example 2, the thickness dimension of the excrement receiving area 50 after absorption of artificial urine is reduced by arranging the compression recesses 60 in a grid pattern consisting of continuous lines. And was able to form a deeper receiving space S.

On the other hand, in Comparative Examples 1 to 3, the content of SAP particles in the excrement receiving region is almost the same as that in the other regions, so that the thickness dimension of the first absorbing portion in the peripheral region after absorption of artificial urine is large. The thickness dimension of the excrement receiving area was 1.1 to 1.8 times, and a relatively shallow receiving space was formed in the area where the excrement receiving area of the absorber was present. Therefore, the diffusion area of the artificial loose stool was 64.8 to 74.0 cm ² , which was relatively large, and the adhesion amount of the artificial loose stool was 6.3 to 6.5, which was relatively large.

As described above, the formation of the excrement receiving area 50 having a low SAP particle content in the absorber 25 forms a relatively deep receiving space S, which effectively diffuses loose stool and adheres to the skin. It can be said that it can be suppressed.

<Second Embodiment>
FIG. 7 is a developed plan view of the diaper 10 according to the second embodiment of the present invention. In the present embodiment, the excrement receiving area 50 of the absorber 25 has a substantially rounded rectangular shape, and the first absorbing portion of the peripheral area 51 is the first and extending along both side edges of the excrement receiving area 50. It has a second longitudinal portion 52A, 52B and a transverse portion 52C extending laterally outside the excrement receiving area 50 in the longitudinal direction.

In the present embodiment, the excrement receiving area 50 is located on the rear waist area 12 side of the crotch area 13, and the first absorbing portion 52 of the peripheral area 51 has a concave shape that opens toward the transverse center line Q. Therefore, the loose stool flowing from the crotch region 13 side to the posterior waist region 12 side can be absorbed and retained in the excrement receiving region 50, and the first absorption portion 52 serves as a barrier, so that the loose stool further becomes the posterior waist. It is possible to prevent the flow to the region 12 side.

Further, although not shown, the first absorption portion 52 of the peripheral region 51 may have only one of the first and second longitudinal portions 52A and 52B and the transverse portion 52C. Even in such a case, the portion where only one of them is arranged can function as a barrier for blocking the flow of excrement that has entered the excrement receiving area 50 from the crotch area 13 side.

When the first absorption unit 52 is formed only from the first and second longitudinal portions 52A and 52B, that is, when the first absorption unit 52 is not present inside and outside the excrement receiving area 50 in the vertical direction, the first absorption unit 52 is not present. The first and second longitudinal portions 52A and 52B serve as a barrier to prevent the lateral flow of excrement, and can prevent lateral leakage of excrement and the barrier cuff 27 from being contaminated by excrement.

Further, when the first absorption portion 52 is formed only from the cross-sectional portion 52C, that is, when the first absorption portion does not exist laterally outside the excrement receiving area 50, the cross-sectional portion 52C is excrement. It becomes a barrier to prevent the vertical flow of excrement, and the excrement flows toward the waist opening side, for example, when the wearer such as an infant is in a state of being held by the mother, in a supine state, or in a prone position. It is possible to prevent the back of the wearer from becoming dirty.

Further, although not shown, the excrement receiving area 50 is located on the front waist area 11 side of the crotch area 13, and the first absorption portion of the peripheral area 51 has a concave shape that opens toward the transverse center line Q. You may be doing it. Even if the first absorption unit does not have a form that surrounds the entire excrement receiving area 50, urine flowing from the crotch area 13 side to the anterior waist area 11 side can be absorbed and retained in the excrement receiving area 50. At the same time, the concave first absorption portion acts as a barrier to prevent urine from further flowing toward the anterior waist region 11.

In this way, even when the first absorption portion of the peripheral region 51 is located on the front waist region 11 side, at least one portion of the first and second longitudinal portions 52A and 52B and the transverse portion 52C is arranged. It suffices if it has been done. When the first absorption portion is formed of only the first and second longitudinal portions 52A and 52B or only the transverse portion 52C, the excrement receiving area 50 is the same as the case where the excrement receiving area 50 is located on the posterior waist area 12 side. It has the effect of blocking the flow of water. In particular, when the excrement receiving area 50 is located on the anterior waist area 11 side, if the first absorbing portion has the transverse portion 52C, it becomes a barrier and the excrement receiving area 50 from the crotch area 13 side. It is possible to prevent the excrement that has entered the area from further flowing toward the front end portion 16 and contaminating the wearer's abdomen.

<Third Embodiment>
FIG. 8 is a plan view of the absorber of the diaper 10 according to the third embodiment of the present invention. In the present embodiment, in the peripheral region 51 of the absorber 25, a plurality of dot-shaped compression recesses 70 that are concave from the skin facing surface side to the non-skin facing surface side are arranged in a so-called staggered pattern. By having such an arrangement mode, it is possible to prevent the compression recesses 70 from being excessively concentrated and the rigidity of the absorber 25 to be locally increased. The compression recess 70 is shallower than the compression recess 60 located in the excrement receiving area 50, and a large step is not formed between the compression recess 70 and the uncompressed portion located around the compression recess 70.

Since a plurality of compression recesses 70 are also formed in the entire peripheral region 51 of the absorber 25, the peripheral region 51 has relatively higher rigidity than the case where the compression recesses 70 are not arranged, and the peripheral region 51 is relatively rigid during wearing. The twist of the entire absorber 25 is further suppressed, and the deformation of the excrement receiving area 50 surrounded by the peripheral area 51 by an external force can be further suppressed.

<Fourth Embodiment>
9 (a) is a cross-sectional view similar to FIG. 5 (a) of the worn article according to the fourth embodiment of the present invention, and FIG. 9 (b) is FIG. 5 (b) according to the fourth embodiment of the present invention. ) Is a partially enlarged cross-sectional view.

Referring to FIG. 9A, in the embodiment, in the state before the absorption of the body fluid of the absorber 25, the surface of the absorber 25 is substantially flat, and the thickness dimensions D2 and D3 of the peripheral region 51 and excretion are excreted. The thickness dimension D1 of the object receiving area 50 is almost the same size.

Referring to FIG. 9B, in the state after body fluid absorption of the absorber 25, the content of SAP particles is such that the first absorption portion 52 in the peripheral region 51 ≧ the second absorption portion 53 in the peripheral region 51> excretion. Since the receiving area is 50, the thickness dimensions D1, D2, and D3 of each of the regions 50 and 51 change according to the SAP content, and the thickness dimension D2 ≧ of the first absorbing portion of the peripheral region 51. The thickness dimension D3 of the second absorbing portion 53 of the peripheral region 51> the thickness dimension D1 of the excretion receiving region 50.

Therefore, even in such an embodiment, the thickness dimension D1 of the excrement receiving area 50 is smaller than the thickness dimensions D2 and D3 of the peripheral area 51, so that a large step is formed between them and the excrement receiving is received. A receiving space S capable of absorbing and retaining excrement is formed in the region 50. Further, since the peripheral region 51 has a first absorbing portion 52 having a relatively high absorbency, which surrounds the outer periphery of the excrement receiving region 50, a relatively deep receiving space S is formed, and a larger amount of excrement is excreted. Can be absorbed and retained.

As described above, even if the thickness dimensions D2 and D3 of the peripheral region 51 and the thickness dimension D1 of the excrement receiving region 50 are substantially the same in the state before the absorber 25 absorbs the body fluid, the absorber 25 The difference between the thickness dimensions D2 and D3 of the peripheral area 51 after absorption and the thickness dimension D1 of the excrement receiving area 50 is larger than before and after absorption of the body fluid, and the latter is smaller than the former, so that the diaper 10 A receiving space S capable of absorbing and retaining excrement is formed in the existing area of the excrement receiving area 50.

Therefore, for example, even if the thickness dimensions D2 and D3 of the peripheral region 51 are smaller than the thickness dimension D1 of the excretion receiving region 50 as the state before the body fluid absorption of the absorber 25, those after the body fluid absorption. It can be said that the receiving space S is formed in the existing area of the excretion receiving area 50 of the diaper 10 by reversing the correlation of the sizes of the thickness dimensions D1-D3. Therefore, in the present specification, the difference between the thickness dimension D1 of the excrement receiving region 50 before and after the absorption of the body fluid and the thickness dimensions D2 and D3 of the peripheral region 51 is an absolute value.

Unless otherwise specified, each component constituting the diaper 10 is not limited to various known materials commonly used in this field in addition to the materials described in the present specification. Can be used. In addition, the terms "first" and "second" used in the present specification and claims are used only for distinguishing similar elements, positions, and the like.

10 Items to wear (disposable diapers)
11 Front waist area 12 Rear waist area 13 Crotch area 21 Surface sheet 25 Absorber 27 Barrier cuff 30 Absorbent core 31 Core cover sheet 31a 1st core cover sheet 31b 2nd core cover sheet 50 Excretion receiving area 51 Peripheral area 52 Peripheral area 1st absorption part 52A 1st longitudinal part 52B 2nd longitudinal part 52C Crossing part 53 2nd absorption part 60 compression recess D1 thickness dimension of excretion receiving area D2 thickness dimension of 1st absorption part in peripheral area D3 Thickness dimension of the second absorption part in the peripheral area P Longitudinal center line Q Crossing center line X Horizontal direction Y Vertical direction Z Thickness direction

Claims (12)

A vertical center line that has a vertical direction, a horizontal direction, and a thickness direction and divides the horizontal dimension into two equal parts, a front waist area, a rear waist area, and a crotch area located between the front and rear waist areas. The liquid-permeable front sheet located on the skin facing surface side, the impermeable back sheet located on the non-skin facing surface side, and intervening between the front surface sheet and the back surface sheet. In a worn article that is fixed and contains at least an absorber located in the crotch area.
The absorber has an island-shaped and liquid-absorbing excrement receiving area and a liquid-absorbing peripheral area located so as to surround the excrement receiving area.
The excrement receiving area is located so as to overlap with the longitudinal center line.
The absorber has an absorbent core containing superabsorbent polymer particles, and the content of the superabsorbent polymer particles in the excrement receiving region is lower than the content of the superabsorbent polymer particles in the peripheral region.
The difference between the thickness dimension of the excrement receiving area and the thickness dimension of the peripheral area before absorption of the body fluid is smaller than or equivalent to the thickness dimension of the surface sheet under a load of 1.5 gf / cm ² . can be,
After absorption of the body fluid of the absorber, the thickness dimension of the excrement receiving area is smaller than the thickness dimension of the peripheral area.
The difference in thickness between the excrement receiving area and the peripheral area after the absorption of the body fluid of the absorber is the thickness of the excrement receiving area and the peripheral area before the absorption of the body fluid of the absorber. A worn item characterized by being larger than the difference in dimensions. The worn article according to claim 1, wherein the thickness dimension of the excrement receiving area is smaller than the thickness dimension of the peripheral area before the absorption of the body fluid of the absorber. The worn article according to claim 1 or 2 , wherein the excrement receiving area has a plurality of dot-shaped compression recesses. The worn article according to claim 3, wherein the total area ratio of the compressed recess to the total area of the excrement receiving area is 10 to 65%. The absorber includes a first core cover sheet that covers the absorbent core and the skin facing surface of the absorbent core, and a second core cover sheet that covers the non-skin facing surface side of the absorbent core. The worn article according to claim 3 or 4 , wherein at least one of the surface sheet, the first core cover sheet and the second core cover sheet is made of a fibrous nonwoven fabric containing thermoplastic fibers. .. The worn article according to any one of claims 3-5, wherein an adhesive is applied to a portion of the inner surface of the surface sheet facing the compression recess in the excrement receiving area in the thickness direction. The peripheral region has a first absorption portion located along at least a part of the outer peripheral edge of the excrement receiving region, and a second absorption portion extending outward from the outer periphery of the first absorption portion. The worn article according to any one of claims 1-6, wherein the content of the superabsorbent polymer particles in the first absorbing portion is higher than the content of the superabsorbable polymer particles in the second absorbing portion. It further has a transverse centerline that bisects the vertical dimension of the worn article.
The excrement receiving area is located in the crotch area deviated from the anterior waist area side or the posterior waist area side with respect to the transverse center line.
The first absorption portion extends laterally to the first and second longitudinal portions extending laterally outside the excrement receiving area and laterally outside the excrement receiving area. Has a cross section and
The worn article according to claim 7 , which has a shape concave toward the crossing center line. The worn article according to claim 8 , wherein the first absorbing portion is formed only from the first and second longitudinal portions or only the transverse portion. Further has a hold area for holding at least one of the anterior-posterior waist areas.
The worn article according to any one of claims 1-9 , wherein the excrement receiving area is located inside the hold area in the vertical direction and does not overlap with the hold area. Further having a pair of barrier cuffs extending in the vertical direction on the skin facing surface side of the surface sheet.
The barrier cuff has an inner edge extending in the vertical direction in a state of being laid down on the skin facing surface side of the surface sheet.
The worn article according to any one of claims 1-10, wherein the excrement receiving area is arranged between the inner edges of the barrier cuff and does not overlap the inner edges. The worn article according to any one of claims 1-11 , wherein the excrement receiving area has a colored portion visible from the skin facing surface side or the non-skin facing surface side.

Images