JP4786429B2 - Disposable absorbent article - Google Patents

Description

  The present invention relates to a disposable absorbent article for children, adults or incontinence.

Conventionally, for example, a disposable diaper described in Japanese Patent No. 3660816 (Patent Document 1) is known as a disposable absorbent article of this type. On the other hand, it approaches the skin side due to distortion, and a space is easily maintained between both side portions of the second absorbent body and the first absorbent body of the diaper main body, and liquid such as urine is easily introduced into the groove, As a result, the liquid that has not been primarily absorbed by the second absorber flows into the space between the first absorber and the second absorber, and the liquid that has flowed into this space is diffused in the longitudinal direction along the left and right grooves. It is efficiently absorbed by the second absorber, and side leakage is effectively prevented.
Japanese Patent No. 3660816

  However, in the conventional disposable absorbent article, since the first absorbent body and the second absorbent body are laminated in the crotch part, the absorbent body may be partially thick, and the feeling of wearing becomes worse. There was a fear.

  This invention is made | formed in view of such a point, and does not laminate | stack a 1st absorber and a 2nd absorber in a crotch part, and provides the disposable absorbent article with a favorable wearing feeling. For the purpose.

The disposable absorbent article according to claim 1 has a top sheet, a back sheet, and a first absorbent body positioned between the two sheets, and the abdomen, the crotch part, and the dorsal part are sequentially integrated along the longitudinal direction. A first absorbent part formed on the first absorbent part, and an upper sheet, a lower sheet, and a second absorbent body positioned between the two sheets, the front side part, the central part and the rear part. sides a sequential integral disposable absorbent article Ru and a second absorbing part formed along the longitudinal direction, wherein the first absorbent portion, the hole portion of the first absorbent body is not located Formed from the crotch part to at least one of the ventral side part and the dorsal side part, the front side part and the rear side part of the second absorption part are the ventral side part of the first absorption part and the each is bonded to the back side, before the second absorption part Symbol In the central part and at least one of the front side and the back side, it is disposed at a position where the second absorber corresponding to the hole, and the longitudinal length of the second absorbent body and The length in the width direction is smaller than the length in the longitudinal direction and the length in the width direction of the hole, and at least one of the front side portion and the rear side portion where the second absorbent body is located corresponds to the corresponding ventral side portion. And a groove is formed between the first absorbent body and the second absorbent body so as to extend in the longitudinal direction and the width direction of the disposable absorbent article by being joined to at least one of the back side portion. It is what.

  The disposable absorbent article according to claim 2 is the disposable absorbent article according to claim 1, wherein the upper surface sheet and the lower surface sheet are outward from the width direction both ends of the second absorbent body at least in the central portion of the second absorbent portion. A flap portion is formed along the longitudinal direction on the upper surface side of the first absorbent body by the extended portion, and an elastic body is disposed along the longitudinal direction in the flap portion. Is.

Disposable absorbent article 請 Motomeko 3 wherein, in the disposable absorbent article according to claim 1 or 2, wherein the length in the width direction of the back side portion of the first absorbent body, the width of the crotch portion of the first absorbent body The width direction length of the back side portion of the hole is larger than the width direction length of the crotch part of the hole portion and smaller than the width direction length of the back side portion of the first absorbent body. The width direction length of the rear side portion of the second absorbent body is larger than the width direction length of the center portion of the second absorbent body, and the groove portion is formed larger than the width direction length of the crotch portion of the first absorbent body. It is what.

According to the invention of claim 1, there is no such thing as in the crotch bottom and first absorber and the second absorber is laminated, Ri excellent der feeling mounted, also, the front of the second absorber is located The groove portion is a disposable absorbent article between the first absorbent body and the second absorbent body by joining at least one of the front and rear side portions to at least one of the corresponding ventral side portion and back side portion. The liquid such as urine that has flowed into the abdominal part or the dorsal part can be diffused in the longitudinal direction and the width direction of the disposable absorbent article by the groove part, thus preventing leakage. You can plan.

  According to the invention according to claim 2, since it is the flap portion on both ends in the width direction that is laminated to the first absorber, the portion does not become thick, and the flap portion is in close contact with the skin, Leakage can be effectively prevented, and when the inner pad is used, leakage can be effectively prevented by bringing the inner pad into close contact with the skin.

According to the invention of 請 Motomeko 3, widthwise length of the rear side of the second absorbent body is greater than the widthwise length of the central portion of the second absorber, the groove of the crotch portion of the first absorbent width Since it is formed larger than the length in the direction, the absorption area is increased, and liquid such as urine is more diffused and leakage can be effectively prevented.

A first related art of the disposable absorbent article of the present invention will be described with reference to FIGS. 1 to 3.

  1 to 3, reference numeral 1 denotes a disposable diaper for adults which is a disposable absorbent article. The disposable diaper 1 is a tape-type diaper having a substantially hourglass shape having a longitudinal direction and a width direction in a developed state.

  The disposable diaper 1 has a top sheet 2, a back sheet 3, and a first absorbent body 4 positioned between the two sheets 2 and 3, and an abdominal side part 6, a crotch part 7 and a back side part 8 are along the longitudinal direction. The first absorption portion 10 is integrally formed sequentially.

  Moreover, the disposable diaper 1 is arrange | positioned on the 1st absorption part 10, has the 2nd absorber 14 located in the upper surface sheet | seat 12, the lower surface sheet | seat 13, and these both sheet | seats 12 and 13, front side part 16, center. The part 17 and the rear side part 18 are provided with a second absorption part 20 that is integrally formed in order along the longitudinal direction.

  Further, at least the crotch part 7 of the first absorption part 10, for example, only the crotch part 7, has a hole 21 that is a longitudinal second absorbent body accommodating part where the first absorbent body 4 is not located. It is formed in a concave shape along the longitudinal direction on the upper surface side. The hole 21 has a shape corresponding to the second absorbent body 14, for example, a substantially rectangular shape elongated in the longitudinal direction of the disposable diaper 1.

  Further, the front side portion 16 and the rear side portion 18 of the second absorption portion 20 are respectively joined to the ventral side portion 6 and the back side portion 8 of the first absorption portion 10, and at least the central portion 17 of the second absorption portion 20. That is, for example, only in the central portion 17, the entire second absorbent body 14 is disposed so as to be accommodated in the hole portion 21 at a position corresponding to the hole portion 21, and the longitudinal direction of the second absorbent body 14. The length and the length in the width direction are smaller than the length in the longitudinal direction and the length in the width direction of the hole 21. Although not shown, the length of the second absorbent body 14 in the longitudinal direction may be larger than the length of the hole 21 in the longitudinal direction.

  Here, the top sheet 2 is hydrophilic or liquid-permeable, and the back sheet 3 is water-repellent or liquid-impervious, and a breathable exterior sheet 23 such as a non-woven cloth is provided on the bottom surface of the back sheet 3. It is preferable to arrange. At both ends in the width direction of the crotch portion 7, leg-around portions 7a are formed.

  The top sheet 12 is hydrophilic or liquid permeable, and the bottom sheet 13 may be either hydrophilic or liquid permeable, water repellent or liquid impermeable. When the lower surface sheet 13 is hydrophilic or liquid permeable, liquid such as urine absorbed by the first absorbent body 4 and the second absorbent body 14 can move between the absorbent bodies 4 and 14. The 1st absorber 4 and the 2nd absorber 14 can be used effectively over the whole surface. On the other hand, when the lower surface sheet 13 is water-repellent or liquid-impervious, it becomes difficult for the liquid to move between the absorbent bodies 4 and 14, so that it is possible to prevent the entire surface from becoming dirty.

  The hole 21 is partitioned and formed by, for example, the top sheet 2, and the top sheet 2 and the back sheet 3 are bonded to each other over substantially the entire surface of the hole 21.

  The 1st absorber 4 and the 2nd absorber 14 are formed with a pulp, a polymeric absorber, etc. In the first absorbent body 4, the ventral side portion 6 and the dorsal side portion 8 are formed in a wide shape, and the length in the width direction of the ventral side portion 6 and the dorsal side portion 8 of the first absorbent body 4 is the same as that of the crotch portion 7. It is larger than the length in the width direction. A substantially rectangular through hole 4a is formed in the center of the crotch part 7 of the first absorbent body 4 along the longitudinal direction. The first absorbent body 4 and the second absorbent body 14 may be held or included with a tissue. Further, when a tissue is disposed in the first absorbent body 4, a case where the tissue is disposed in the hole portion 21 or a case where the tissue is not disposed is conceivable. However, when a tissue is disposed in the hole 21, the tissue is sandwiched between the front surface 2 and the back sheet 3 at a position corresponding to the hole 21.

  The basis weight (density) of the pulp, polymer absorbent, etc. of the first absorber 4 and the second absorber 14 is not particularly limited, and the basis weight is the same in the first absorber 4 and the second absorber 14. Or different. However, if there is a step between the first absorbent body 4 and the second absorbent body 14 during mounting, there is a possibility that a sense of incongruity may occur due to the stepped portion. Therefore, the thickness of the first absorbent body 4 and the second absorbent body 14 The thickness is preferably substantially the same. However, since the absorbers 4 and 14 are made of pulp or the like, even if they are formed to have the same thickness, they are not necessarily the same, and the thickness depends on the material of the sheet sandwiching the absorbers 4 and 14. It may change. Therefore, “substantially the same thickness” as used herein means that the same thickness is included as long as it does not cause a sense of incongruity due to the difference in thickness between the absorbers 4 and 14 when worn.

  The hole portion 21 of the first absorption portion 10 is not limited to the configuration formed only in the crotch portion 7, and the hole portion 21 is formed from the crotch portion 7 to at least one of the abdominal side portion 6 and the back side portion 8. Other configurations may be used. Similarly, the second absorbent body 14 is not limited to a configuration in which the second absorbent body 14 is located only at the central portion 17 of the second absorbent portion 20, and the second absorbent body 14 extends from the central portion 17 to at least the front side portion 16 and the rear side portion 18. The structure located over either one may be sufficient.

  The joining of the abdominal side part 6 and the front side part 16 and the joining of the back side part 8 and the rear side part 18 should just be partly joined, but if the joining part is small, the first absorbent part Since the portion 10 holds the second absorbent portion 20 becomes small and may be kinked irregularly, the substantially entire front side portion 16 and the substantially entire rear side portion 18 are substantially the entire ventral side portion 6 and It is preferable that each of the dorsal portion 8 is joined to substantially the whole. Moreover, the center part 17 and the crotch part 7 may be joined partially or substantially entirely.

  Side flaps (solid gathers) 24 are preferably disposed along the longitudinal direction at both ends in the width direction of the first absorbent portion 10. The base end side of the side flap 24 is located on the top sheet 3 of the first absorbent portion 10, and the distal end side is a free end portion 27 having an elastic body 25 such as rubber.

  Further, the back side portion 8 of the first absorbent portion 10 is provided with attachment means 26 such as an adhesive tape or a hook and loop fastener for attaching the disposable diaper 1 to the wearer's body. Further, elastic bodies 28 such as rubber are disposed along the longitudinal direction at both ends in the width direction of the first absorbent portion 10.

  And according to such a disposable diaper 1, since the 1st absorption part 10 and the 2nd absorption part 20 are formed separately, each becomes easy to closely_contact | adhere to a wearer's skin, and also in the hole part 21 The liquid such as urine that has flowed in diffuses along the longitudinal direction of the disposable diaper 1, and the first absorbent body 4 and the second absorbent body 14 are not laminated in the crotch part 7, and thus on the wearer's skin. The step part which gives a sense of incongruity is not formed in the crotch part 7, and the wearing feeling is good.

Next, a second related technique of the disposable absorbent article of the present invention will be described with reference to FIGS. 4 and 5.

In the disposable diaper 1 shown in FIGS. 4 and 5, the upper sheet 12 and the lower sheet 13 are the second absorbent body at least in the central portion 17 of the second absorbent portion 20, that is, for example, in the front side portion 16, the central portion 17 and the rear side portion 18. 14 is extended outward from both ends in the width direction and joined to each other, and is positioned so as to be laminated on the first absorbent body 4 along the longitudinal direction on the upper surface side of the first absorbent body 4 by this extended portion. A longitudinal and sheet-like flap portion 31 is formed. Each of the flap portions 31 on both sides is provided with an elastic body 32 such as rubber along the longitudinal direction. Other configurations are basically the same as those of the first related technology .

  And according to the disposable diaper 1 shown in FIG.4 and FIG.5, not only the 1st absorber 4 and the 2nd absorber 14 do not laminate | stack in the crotch part 7, but a feeling of mounting | wearing is favorable, and 1st absorber 4 is laminated to the flap portion 31 of the second absorbent portion 20 so that the portion does not become thick and the flap portion 31 is in close contact with the wearer's skin, effectively preventing leakage. Furthermore, when using an inner pad, leakage can be effectively prevented by bringing the inner pad into close contact with the skin.

  The configuration in which the flap portion 31 is formed on the front side portion 16, the central portion 17 and the rear side portion 18 is not limited, for example, the configuration in which the flap portion 31 is formed only on the central portion 17, and the flap portion 31 is the central portion. A configuration formed from 17 to only one of the front side portion 16 and the rear side portion 18 may be employed.

  Further, at least one elastic body 32 may be disposed on each of the flap portions 31 on both sides. However, in order to enhance the effect of preventing the wearer from sticking to the skin and using the inner pad together, It is preferable to arrange a plurality of the elastic bodies 32 side by side in the width direction, or to use a wide, that is, a belt-like elastic body 32.

  Further, as long as the elastic body 32 is disposed at least at the central portion 17 of the flap portion 31, it may extend toward at least one of the front side portion 16 and the rear side portion 18. .

  The length of the elastic body 32 may be larger or smaller than the length in the longitudinal direction of the second absorbent body 14 when compared with the second absorbent body 14, but the front and rear end portions of the flap portion 31 do not expand and contract. Thus, it is made smaller than the first absorber 4.

  Furthermore, the outer end portion along the longitudinal direction of the flap portion 31 is preferably located inward from the end portion in the width direction of the first absorbent body 4, and when the side flap 24 is disposed, It is preferable that the side flap 24 is located inward from the free end portion 27 of the side flap 24 when the side flap 24 is lying down.

Next, a first embodiment of a disposable absorbent article of the present invention with reference to FIGS.

In the disposable diaper 1 shown in FIGS. 6 and 7, the hole 21 of the first absorbent portion 10 has at least one of the crotch portion 7 to the abdominal side portion 6 and the back side portion 7, for example, the crotch portion 7 to the ventral side portion. 6 and the back side portion 7, the longitudinal length and the width direction length of the second absorbent body 14 are smaller than the longitudinal length and the width direction length of the hole portion 21, and the second absorption At least one of the front side portion 16 and the rear side portion 18 where the body 14 is located, that is, for example, at least one of the ventral side portion 6 and the back side portion 8 corresponding to both the front side portion 16 and the rear side portion 18, that is, For example, by joining to both the ventral part 6 and the dorsal part 8, two groove parts 41 (hatched portions in FIG. 6) 41 are formed between the first absorbent body 4 and the second absorbent body 14. Is formed. Each groove portion 41 extends in the longitudinal direction and the width direction of the disposable diaper 1 and is substantially U-shaped in plan view. Other configurations are basically the same as those of the second related technology .

  And according to the disposable diaper 1 shown in FIG.6 and FIG.7, not only the 1st absorber 4 and the 2nd absorber 14 do not laminate | stack in the crotch part 7, but a feeling of mounting | wearing is also favorable, and the stomach side part 6 is used. The liquid such as urine that has flowed into the back side portion 8 can be diffused in the longitudinal direction and the width direction of the disposable diaper 1 by the groove portion 41, thereby preventing leakage.

  Both the front side portion 16 and the rear side portion 18 are joined to both the ventral side portion 6 and the back side portion 8 to form two groove portions 41 between the first absorbent body 4 and the second absorbent body 14. The first absorbent body 4 and the second absorbent body 14 are joined by joining either the front side portion 16 or the rear side portion 18 to either the ventral side portion 6 or the back side portion 8. A configuration in which one groove 41 is formed between the two may be used.

  The groove 41 is preferably formed between the first absorbent 10 and the second absorbent 20, but is not necessarily formed between the first absorbent 10 and the second absorbent 20. . That is, since the groove portion 41 only needs to have a groove-shaped space portion for diffusing liquid such as urine between the first absorbent body 4 and the second absorbent body 14, the groove portion 41 includes the top sheet 12, Even if the sheet body such as the lower surface sheet 13 or the surface sheet 2 is located and the sheet bodies are in contact with each other and laminated, the first absorbent body 4 and the second absorbent body 14 are not disposed. If a substantial space portion is formed, the portion can serve as the groove 41 to diffuse the liquid.

Next, a second embodiment of a disposable absorbent article of the present invention with reference to FIGS.

In the disposable diaper 1 shown in FIGS. 8 and 9, the length in the width direction of the back side portion 8 of the first absorbent body 4 is larger than the length in the width direction of the crotch portion 7 of the first absorbent body 4. The width direction length of the back side portion 8 is larger than the width direction length of the crotch portion 7 of the hole portion 21 and smaller than the width direction length of the back side portion 8 of the first absorbent body 4, and the second absorbent body 14. The width in the width direction of the rear side portion 18 is larger than the length in the width direction of the central portion 17 of the second absorbent body 14, and the groove portion (shaded portion in FIG. 8) 41 is the crotch portion 7 of the first absorbent body 4. It is formed larger than the length in the width direction. Other configurations are basically the same as those of the second related technology .

  And according to the disposable diaper 1 shown in FIG.8 and FIG.9, not only the 1st absorber 4 and the 2nd absorber 14 do not laminate | stack in the crotch part 7, but a feeling of mounting | wearing is good, and absorber 4, As the absorption area by 14 is increased, liquid such as urine is more diffused and leakage can be effectively prevented.

In addition, the width direction length of the abdominal side part 6 of the 1st absorber 4 and the abdominal side part 6 of the hole 21 is longer than the width direction length of each crotch part 7 like 3rd Embodiment shown in FIG. A configuration in which the length in the width direction of the front side portion 16 of the second absorber 14 is larger than the length in the width direction of the central portion 17 may be used. That is, in addition to the back side portion 8 and the rear side portion 18, the abdominal side portion 6 and the front side portion 16 are also made wider in the width direction than the crotch portion 7 or the central portion 17, so that the first absorbent body 4, the hole portion 21, The second absorber 14 may have a substantially hourglass shape.

  In addition, the disposable diaper 1 is not limited to a tape-type diaper, A pants-type diaper may be sufficient.

It is an expansion | deployment top view of the disposable absorbent article which concerns on the 1st related technique of this invention. It is an expansion | deployment top view of a disposable absorbent article same as the above. It is AA sectional drawing of FIG. It is an expansion | deployment top view of the disposable absorbent article which concerns on the 2nd related technique of this invention. It is BB sectional drawing of FIG. It is an expansion | deployment top view of the disposable absorbent article which concerns on the 1st Embodiment of this invention. It is CC sectional drawing of FIG. It is an expansion | deployment top view of the disposable absorbent article which concerns on the 2nd Embodiment of this invention. It is DD sectional drawing of FIG. It is an expansion | deployment top view of the disposable absorbent article which concerns on the 3rd Embodiment of this invention.

DESCRIPTION OF SYMBOLS 1 Disposable diaper which is a disposable absorbent article 2 Top sheet 3 Back sheet 4 1st absorber 6 Abdominal side part 7 Crotch part 8 Back side part
10 First absorber
12 Top sheet
13 Bottom sheet
14 Second absorber
16 Front side
17 Central
18 Rear side
20 Second absorber
21 hole
31 Flap part
32 Elastic body
41 Groove

Claims (3)

A first absorbent part having a top sheet, a back sheet and a first absorbent body positioned between both sheets, wherein the abdomen, the crotch part and the back part are integrally formed sequentially along the longitudinal direction;
The upper side sheet, the lower side sheet, and the second absorbent body positioned between the two sheets are disposed on the first absorbent portion, and the front side portion, the central portion, and the rear side portion are sequentially integrated along the longitudinal direction. a disposable absorbent article Ru and a second absorbing part formed,
In the first absorption part, a hole where the first absorber is not located is formed from the crotch part to at least one of the abdominal side part and the back side part ,
The front side part and the rear side part of the second absorption part are joined to the ventral side part and the back side part of the first absorption part, respectively.
In the at least one of the front Symbol central portion and the front portion and the back side of the second absorption part, the second absorber is disposed at a position corresponding to the hole, and the second The longitudinal length and the width direction length of the absorber are smaller than the longitudinal length and the width direction length of the hole ,
When at least one of the front side portion and the rear side portion where the second absorbent body is located is joined to at least one of the corresponding ventral side portion and back side portion, the first absorbent body and A disposable absorbent article characterized in that a groove is formed between the second absorbent body and the longitudinal direction and width direction of the disposable absorbent article. In at least the central portion of the second absorbent portion, the upper surface sheet and the lower surface sheet extend outward from both widthwise end portions of the second absorbent body,
A flap portion positioned along the longitudinal direction is formed on the upper surface side of the first absorbent body by the extended portion,
The disposable absorbent article according to claim 1, wherein an elastic body is disposed along the longitudinal direction of the flap portion. The width direction length of the back side part of the first absorbent body is larger than the width direction length of the crotch part of the first absorbent body,
The width direction length of the back side part of the hole part is larger than the width direction length of the crotch part of the hole part and smaller than the width direction length of the back side part of the first absorbent body,
The width direction length of the rear side part of the second absorbent body is larger than the width direction length of the central part of the second absorbent body, and the groove part is formed larger than the width direction length of the crotch part of the first absorbent body. The disposable absorbent article according to claim 1 or 2 .

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