JP2010148680A - Absorbent article - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an absorbent article capable of adjusting positions of three-dimensional gathers and capable of effectively preventing leakage of urine from the absorbent article. <P>SOLUTION: The absorbent article 1 includes: an absorber 22; a top sheet 18; a back sheet 20; three-dimensional gathers 26a and 26b disposed at least on both sides of the absorber 22; and band-shaped stretching members 71a and 71b whose one ends 71x and 71y are fixed at least to the pair of left and right three-dimensional gathers 26a and 26b, respectively. The stretching members 71a and 71b have fastening parts 72 which can fix the stretching members 71a and 71b in such a state that the three-dimensional gathers 26a and 26b are stretched from side edges of the absorber 22 toward the outside of the side edges. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an absorbent article. More specifically, the position of the three-dimensional gathers can be adjusted so that the three-dimensional gathers arranged in the vicinity of the periphery of the absorber function effectively, and the absorption that can effectively prevent urine leakage from the absorbent article. It relates to sex goods.

  In general, absorbent articles such as disposable diapers and urine pads are composed of an absorbent body, a top sheet at least partially made of a liquid-permeable material, and arranged to cover the surface of the absorbent body, and a liquid-impermeable material. And a back sheet disposed so as to cover the back surface of the absorber.

  Such an absorbent article is used so that the top sheet comes into contact with the wearer's skin, and excrement passes through the liquid-permeable portion of the top sheet and is absorbed and held by the absorbent body. And the excrement is prevented from leaking outside by the liquid-impermeable back sheet disposed on the back side of the absorber.

  In such an absorbent article, in order to prevent urine leakage or the like, there is a three-dimensional gather serving as a leak-proof wall configured to stand three-dimensionally in the vicinity of the periphery of the absorber, for example, on both sides of the absorber. (For example, refer patent document 1).

JP-A 63-182401

  However, the three-dimensional gather used for such an absorbent article is a three-dimensional gather in a state where the three-dimensional gather does not spread to the left and right of the absorbent body when the inner surface of the absorbent article is applied to the wearer. There is a problem that the gathers may be crushed by the buttocks or the like, and the three-dimensional gather may not function normally.

  Furthermore, when the three-dimensional gather is crushed so as to cover a part of the surface of the absorber as described above, the front of the absorber absorbs urine, that is, the absorber for receiving excrement such as urine. There is a problem that the substantial surface area is reduced and the urine excreted by the wearer cannot be absorbed well. In particular, the three-dimensional gathers often collapse on the lower side of the body when worn, and it is necessary to prevent the three-dimensional gathers from falling on the absorbent body in the back body where absorption ability is necessary because urine wraps around. However, for example, for a bedridden wearer, the three-dimensional gather is likely to be crushed under the body at the time of wearing, and it is difficult for the caregiver to specify the position of the three-dimensional gather. It will become apparent.

  Furthermore, since this three-dimensional gather is composed of a water-repellent material, when urine is excreted on the three-dimensional gather covering the surface of the absorber, the urine etc. can be easily transmitted along the surface of this three-dimensional gather. There was also a problem of leaking out.

  The present invention can adjust the position of the three-dimensional gather so that the three-dimensional gather arranged in the vicinity of the periphery of the absorber functions effectively, that is, the proper arrangement position of the three-dimensional gather, and the absorbent article It is an object of the present invention to provide an absorbent article that can effectively prevent leakage of urine from the urine.

  As a result of intensive studies to solve the above-mentioned problems, the present inventors have, for example, pulled the solid gathers arranged in the absorbent article in a state of being pulled from the side edge of the absorbent body toward the outer side edge. The present invention has been completed by conceiving that the above-mentioned problems can be solved by connecting a tensile member having a fastening portion capable of fixing the member. Specifically, the following absorbent articles are provided by the present invention.

[1] An absorber, a top sheet that is at least partially made of a liquid-permeable material and arranged to cover the surface of the absorber, and a liquid-impermeable material that covers the back surface of the absorber An absorbent article comprising a back sheet arranged to be and a water repellent sheet and a pair of left and right three-dimensional gathers arranged on at least both sides of the absorbent body, one end of which is at least the above It further includes a pair of right and left belt-like tension members fixed to each of the pair of left and right three-dimensional gathers, and the tensile member is a state in which each of the three-dimensional gathers is pulled from the side edge of the absorber toward the outer side edge. An absorbent article having a fastening portion capable of fixing the tension member.

[2] The absorbent article according to [1], wherein the one end portion of the tensile member is fixed to the upper end portion side from the central portion from the lower end portion to the upper end portion of the three-dimensional gather.

[3] The absorbent article according to [1] or [2], wherein the other end of the tensile member is temporarily fixed to a part of the absorbent article.

  The absorbent article of the present invention can be fixed in a state where the three-dimensional gather is spread to the left and right of the absorbent body by the tension member so that the three-dimensional gather does not fall on the absorbent body, and when the absorbent article is worn The solid gather can be effectively functioned without the solid gather being crushed on the absorber by the buttocks or the like. Thereby, urine leakage from the absorbent article can be effectively prevented.

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

[1] Features of the absorbent article of the present invention:
First, the characteristics of the absorbent article of the present invention will be described using the urine pad shown in FIGS. 1A to 1D as an example. Here, FIG. 1A is a plan view of a urine pad that is one embodiment of the absorbent article of the present invention as seen from the top sheet side, and FIG. 1B is a cross-sectional view taken along line AA ′ of the urine pad shown in FIG. 1A. It is a schematic sectional drawing which shows. 1C is a plan view showing a state in which the tension member of the urine pad shown in FIG. 1A is pulled toward the outside in the width direction of the absorbent article, and FIG. 1D is a plan view of the urine pad shown in FIG. It is a schematic sectional drawing which shows a B 'cross section.

  As shown in FIG. 1A to FIG. 1D, the absorbent article 1 (urine pad 1 </ b> A) of the present invention is composed of an absorbent body 22 and at least a part made of a liquid-permeable material so as to cover the surface of the absorbent body 22. The top sheet 18 arranged, the back sheet 20 made of a liquid-impermeable material and arranged to cover the back surface of the absorber 22, and the water repellent sheet, arranged at least on both sides of the absorber 22. The absorbent article 1 includes a pair of left and right three-dimensional gathers 26 (26a, 26b).

  The “urine pad” is also referred to as an inner pad or an auxiliary pad, and is an absorption pad exclusively for urine absorption. This urine pad is used in a state of being placed on the inner surface of the underwear or the surface of the top sheet of the disposable diaper. Like a disposable diaper, a urine pad includes an absorbent body, a top sheet, and a back sheet, but is generally configured in a small pad shape that does not have a portion that wraps around the waist of the wearer. .

  The absorbent article 1 of the present invention further includes a pair of left and right tension members 71 (71a, 71b) each having one end 71x, 71y fixed to at least a pair of left and right solid gathers 26a, 26b. As shown in FIG. 1C and FIG. 1D, the tension members 71a and 71b are tension members 71a and 71b in a state where the three-dimensional gathers 26a and 26b are pulled from the side edges of the absorber 22 toward the outer side edges. For example, a fixing portion 72 that can be fixed to at least one of the top sheet 18 and the back sheet 20 is provided. The other ends 71p and 71q of the pair of tension members 71a and 71b are free ends for pulling the respective tension members 71a and 71b, or the inner surfaces of the three-dimensional gathers 26a and 26b and the diaper. Is temporarily fixed.

  The absorbent article 1 of the present invention thus configured has the three-dimensional gathers 26a, 26b placed on the left and right of the absorber 22 by the tension members 71a, 71b so that the three-dimensional gathers 26a, 26b do not fall on the absorber 22. The three-dimensional gathers 26a and 26b are not crushed on the absorber 22 by the buttocks or the like when the absorbent article 1 is worn, and the three-dimensional gathers 26a and 26b are effective. Can be functioning. Thereby, urine leakage from the absorbent article 1 can be effectively prevented.

  More specifically, the tension member 71a prevents the three-dimensional gathers 26a and 26b from being crushed on the absorbent body 22 by the wearer's body before the wearer wears (wears) the absorbent article. , 71b can be pulled toward the outside of the absorber 22, and the positions of the three-dimensional gathers 26a, 26b can be fixed by the fastening portions 72 disposed on the tension members 71a, 71b. Thereby, the three-dimensional gathers 26a and 26b once expanded are in the original state, that is, in a state where they are not expanded left and right (in other words, when the wearer wears (wears) the absorbent article 1 in that state, It is possible to effectively prevent the three-dimensional gathers 26a and 26b from returning to the state where the three-dimensional gathers 26a and 26b are crushed on the absorber 22, and when the wearer wears the absorbent article 1 and wears it, the three-dimensional gather 26a and 26b will function effectively as leak-proof walls.

  In the absorbent article 1 (urine pad 1A) shown in FIGS. 1A to 1D, the tension members 71a and 71b are connected to the three-dimensional gathers 26a and 26b arranged on both sides of the absorbent body 22, respectively. Although an example is shown, for example, although illustration is omitted, a tensile member may be further connected to a three-dimensional gather disposed before and after the absorbent body, for example, a back gathers or a belly gathers. Moreover, when two or more pairs of solid gathers are arranged on both sides of the absorber, tensile members may be connected to the two or more pairs of solid gathers, respectively. That is, in the absorbent article of the present invention, the tensile members configured in the same manner as the tensile members 71 as shown in FIGS. 1A to 1D described above with respect to the respective three-dimensional gathers arranged in the vicinity of the periphery of the absorber. The three-dimensional gathers can be prevented from being crushed by pulling the tension members and fixing the tension members with the respective fastening parts so that the respective three-dimensional gathers function effectively. May be.

  As such a fastening part 72, for example, an adhesive fastener that is fixed with an adhesive, or a mechanical fastener that can be mechanically coupled to the front and back surfaces of the absorbent article (planar fastener) is used. Can be used.

  In addition, it is preferable that the one end part of the tension member used for the absorbent article of this invention is being fixed to the upper end part side rather than the center part from the lower end part of a three-dimensional gathers to an upper end part. By constructing in this way, by pulling the tension member, the three-dimensional gathers can move easily in conjunction with each other, the tip side of the three-dimensional gathers can be expanded well to the left and right, and the proper arrangement position of the three-dimensional gathers can be achieved. In addition, the position of the three-dimensional gather can be adjusted satisfactorily.

  Moreover, about the width | variety of the connection part of a tension member, for example, the connection part with a solid gather may be comprised so that it may become wider than another site | part, and you may branch into multiple. By comprising in this way, the wide range of solid gathers can be expanded by pulling a tension member, and it can prevent effectively that solid gathers are crushed on an absorber.

  Moreover, the tension member mentioned above may have a knob | pick part in which the other end part can be pinched and can be pulled right and left. By having such a knob portion, the other end portion of the tension member can be easily picked and pulled, and the fastening portion arranged at the other end portion of the tension member is good in an appropriate position. Can be fastened. For example, in the absorbent article 1 shown in FIG. 1A, a tongue-shaped knob 76 is formed at the other ends 71p and 71q of the tension members 71a and 71b (that is, the free ends of the tension members). An example is shown.

  Moreover, in the absorbent article 1 shown to FIG. 1A-FIG. 1D, the tension members 71a and 71b are in the longitudinal direction (namely, direction which goes to the other edge from one edge of an absorbent article) of an absorbent article. Although an example is shown that is arranged at a position offset to one edge side, if the tension member is connected to the three-dimensional gather so that the three-dimensional gather can be spread toward the outer periphery of the absorber, There is no restriction | limiting in particular about the connection position of a tension member.

  For example, in the absorbent article 1 shown in FIGS. 1A to 1D, an example in which the tension members 71 a and 71 b are arranged near the wearer's back side is shown. A tension member may be disposed.

  For example, FIG. 2 is a plan view of an absorbent article (urine pad), which is another embodiment of the absorbent article of the present invention, as viewed from the top sheet side. The absorbent article 1 (urine pad 1B) shown in FIG. 2 is a battledore type absorbent article configured so that the width corresponding to the back side of the wearer of the absorbent body 22 is widened, and the tension members 71a and 71b. Shows an example in which the three-dimensional gathers 26a and 26b are connected to portions closer to the back side. Such an absorbent article 1 (urine pad 1B) can spread the three-dimensional gathers 26a, 26b close to the wearer's back side to the left and right of the absorbent body 22, for example, as an absorbent article for women It can be used satisfactorily.

  On the other hand, for example, when used as an absorbent article for men that requires more absorbency on the ventral side, by using the absorbent article 1 of FIG. 2 upside down, the tension members 71a and 71b are Moreover, it can be used as the absorbent article 1 connected to the portion closer to the ventral side of the three-dimensional gathers 26a and 26b. By comprising in this way, it becomes possible to spread more widely the front side (abdominal side) solid gather with a male genitalia.

  Thus, in the absorbent article of this invention, the connection position with respect to the three-dimensional gather of a tension member can be suitably determined according to the sex of the wearer who uses an absorbent article, and the use condition of an absorbent article. . In the above description, a battledore type absorbent article has been described as an example, but the same applies to rectangular absorbent articles as shown in FIG. 1A and disposable diapers.

  In addition, in the battledore type absorbent article 1 shown in FIG. 2, the fit gathers 37 (37a, 37b) may be arranged on the narrow side. By comprising in this way, the fitting property with respect to a wearer can be improved.

  Moreover, in the absorbent article of this invention, the other edge part of the tension member demonstrated so far may be temporarily fixed to a part of absorbent article, for example. By comprising in this way, it can prevent effectively that the other edge part of a tension | pulling member will float. For this reason, it becomes easy to use an absorbent article, and productivity (for example, high-speed productivity) of an absorbent article can be improved. The other end of the tension member can be temporarily fixed to a part of the three-dimensional gather, for example. The method of temporary fixing is not particularly limited, and can be performed by a known method such as a hot melt adhesive, embossing, peelable heat fusion, and fastening means such as a mechanical fastener. In addition, temporary fixing can also be performed by the fastening part arrange | positioned at the tension member.

  Here, FIG. 3A and FIG. 3B are sectional views showing still another embodiment of the absorbent article of the present invention. 3A and 3B shows a cross section at the same position as the cross section shown in FIG. 1B. 3A shows a state before the tension member is pulled, and FIG. 3B shows a state after the tension member is pulled. In FIG. 3A and FIG. 3B, about the thing comprised similarly to each element of the absorbent article shown in FIG. 1B, the same code | symbol is attached | subjected and description is abbreviate | omitted.

  In the absorbent article 1 (urine pad 1C) shown in FIG. 3A, the three-dimensional gathers 26a and 26b are formed as Z-fold gathers, and the one end portions 71x and 71y of the tension members 71a and 71b are connected to the three-dimensional gathers 26a and 26b. Is fixed in the vicinity of the bent portion of the Z-fold (that is, in the vicinity of the bent portion protruding from the left and right side edges of the absorber 22), and the other ends 71p and 71q are temporarily fixed to a part of the three-dimensional gathers 26a and 26b. An example is shown. When using the tension members 71a and 71b, the tension members 71a and 71b are peeled off from the three-dimensional gathers 26a and 26b, and the tension members 71a and 71b are pulled to the left and right of the absorber 22 as shown in FIG. The positions of the three-dimensional gathers 26a and 26b are adjusted so that the gathers 26a and 26b function effectively, and are fixed by the fastening portions 72 of the tension members 71a and 71b. Here, reference numeral 75 denotes a temporary fixing portion 75 of the tensile member.

[2] Disposable diapers:
Next, as still another embodiment of the absorbent article of the present invention, a tape-type disposable diaper and a pants-type disposable diaper will be described in detail.

[2-1] Definition etc .:
The “pants-type disposable diaper” is, for example, made of a sheet material like the absorbent article 1 (pants-type disposable diaper 1D) shown in FIGS. 4A and 4B, and includes one waist opening 10 and a pair of legs. Disposable diaper comprising a pants-shaped exterior sheet 16 having a surrounding opening 12 and an absorbent main body 14 having a pad shape in which an absorbent body 22 is enclosed and fixed to the inner surface side of the exterior sheet 16 Means.

  In the pants-type disposable diaper 1 </ b> D, the exterior sheet 16 is configured by laminating an inner sheet 16 a disposed on the inner surface and an outer sheet 16 b disposed on the outer surface, on the waist portion of the exterior sheet 16. Is stretched around the waist between the outer sheets 16 (in this example, between the inner sheet 16a and the outer sheet 16b). The stretchable belly stretchable material 44 is fixed between the layers 16a and 16b. The absorbent main body 14 is configured in a pad shape in which the absorbent body 22, the top sheet 18, and the back sheet 20 are integrated.

  The “tape-type disposable diaper” includes an absorbent body 22, a top sheet 18, and a back sheet 20, as in the absorbent article 1 (tape-type disposable diaper 1 E) shown in FIG. The disposable diaper further provided with the fastening tape 11 for fixing the front body 2 and the back body 6 arranged so as to extend from the left and right side edges 6a and 6b.

  The “front body” is a portion (in the figure, covering the abdomen side (front of the body) of the wearer when the absorbent article is attached to the wearer like the absorbent article 1 shown in FIGS. 4A and 5). Reference numeral 2), “inseam” means a part covering the inseam of the wearer when the absorbent article is attached to the wearer (in the figure, reference numeral 4), “rear body” means absorption to the wearer. It means a portion that covers the back side (back of the body) of the wearer when the article is mounted (reference numeral 6 in the figure).

[2-2] Pants-type disposable diapers:
First, an example of a pants-type disposable diaper will be described as still another embodiment of the absorbent article of the present invention. FIG. 4A is a perspective view showing a pants-type disposable diaper according to still another embodiment of the absorbent article of the present invention, and FIG. 4B is an exploded view of the pants-type disposable diaper shown in FIG. 4A as viewed from the top sheet side. It is a top view which shows a state.

  The absorbent article 1 (pants-type disposable diaper 1D) shown in FIGS. 4A and 4B is an absorbent body 22 and a top that is at least partially made of a liquid-permeable material and is disposed so as to cover the surface of the absorbent body 22. The sheet | seat 18 and the back sheet | seat 20 arrange | positioned so that the back surface of the absorber 22 may be coat | covered are provided. Further, by joining the corresponding side edges 2a, 6a (2b, 6b) of the front body 2 and the back body 6, one waist opening 10 and a pair of leg openings 12 (12a, 12b) are formed. Is formed. In addition, the code | symbol 9 in FIG. 4A shows the junction part (joint part 9) of the side edges 2a and 6a (2b, 6b) which the front body 2 and the back body 6 correspond.

  In this pants-type disposable diaper 1D, one end 71x, 71y is fixed to at least a pair of left and right three-dimensional gathers 26a, 26b, and the other end 71p, 71q extends outward from the side edge of the absorber 22. The strip-shaped at least a pair of left and right tension members 71 (71a, 71b) is further provided, and the tension members 71a, 71b direct the three-dimensional gathers 26a, 26b from the side edges of the absorber 22 to the outer side edges. It has the fastening part 72 which can fix the tension members 71a and 71b in the tensioned state.

  The pants-type disposable diaper 1D of the present invention is a three-dimensional gather connected to the tension members 71a and 71b by pulling the other ends 71p and 71q of the tension members 71a and 71b before wearing the pants-type disposable diaper 1D. The positions of 26a and 26b can be adjusted (expanded to the left and right of the absorber), and the state can be maintained by the fastening portions 72 disposed on the tension members 71a and 71b. For this reason, the three-dimensional gathers 26a and 26b can be effectively functioned, and urine leakage from the leg-hole openings 12a and 12b and the like can be effectively prevented. In addition, about the tension member used for such a type disposable diaper, what was comprised similarly to the tension member used for the urine pad mentioned above can be used conveniently.

  Such tension members 71a and 71b may be connected to a three-dimensional gather at a plurality of locations by branching one end 71x and 71y connected to the three-dimensional gather 26a and 26b into a plurality of branches, for example. . By comprising in this way, a solid gather can be spread to the right and left of an absorber in a wide range.

  Although not shown in the figure, for example, a plurality of tensile members are connected to each three-dimensional gather, and the three-dimensional gathers can be pulled and fixed at a plurality of locations by these tensile members. It may be.

[2-3] Tape-type disposable diapers:
Next, as another embodiment of the absorbent article of the present invention, an example of a tape-type disposable diaper will be described. FIG. 5 is a partially cutaway cross-sectional view showing a tape-type disposable diaper according to still another embodiment of the absorbent article of the present invention, and is a view showing a state where the tape-type disposable diaper is developed and viewed from the top sheet side. It is.

  A tape-type disposable diaper 1E shown in FIG. 5 is composed of each part of a front body 2, a crotch part 4 and a back body 6, and is composed of an absorbent body 22 and at least a part of a liquid-permeable material. A top sheet 18 arranged to cover, a back sheet 20 made of a liquid-impermeable material and arranged to cover the back surface of the absorber 22, and a water-repellent sheet, at least on both sides of the absorber 22 A tape-type disposable diaper comprising a pair of left and right three-dimensional gathers 26 (26a, 26b) and at least a pair of fastening tapes 11 extending from the left and right side edges 6a, 6b of the back body 6 1E. This tape-type disposable diaper 1E can wear a diaper by fastening the fastening tape 11 extended from each side edge 6a, 6b of the back body 6 to the front patch 13 arranged in the front body 2. it can.

  In the tape-type disposable diaper 1E, like the absorbent articles described so far, one end 71x, 71y is fixed to at least each of the pair of left and right three-dimensional gathers 26a, 26b, and the other end 71p, 71q further includes at least a pair of left and right tension members 71 (71a, 71b) extending outward from the side edges of the absorber 22, and the tension members 71a, 71b include the three-dimensional gathers 26a, 26b, respectively. It has the fastening part 72 which can fix the tension members 71a and 71b in the state pulled toward the side edge outward from the side edge of the absorber 22.

  Also in the tape-type disposable diaper 1E of the present invention configured as described above, by pulling the tension members 71a and 71b, the positions of the three-dimensional gathers 26a and 26b can be adjusted well, and leakage of urine and the like can be prevented. It can prevent effectively by 26a, 26b. In addition, also about the structure of the tension | tensile_strength members 71a and 71b in the tape type disposable diaper 1E, a connection position, the number, etc. with a three-dimensional gather can be suitably determined according to a use purpose etc. similarly to the underpants type disposable diaper mentioned above. .

[3] Components of the absorbent article:
Next, each structural member which comprises the absorbent article of this invention is demonstrated.

[3-1]: Tensile member:
The tensile member used for the absorbent article of the present invention is connected (fixed) to one end of the tension member so that the other end of the tension member is pulled, so that the three-dimensional gather functions effectively. It is a strip-shaped member for adjusting the position of the three-dimensional gather. In addition, the fixed end (one end part) of an above-described tension member is fixed to the side wall part which faces the outer side of the absorbent article in the state where the solid gathers stood up.

  Examples of such a tensile member include woven fabric, non-woven fabric, film, urethane foam, and sponge. Among these, it is preferable to use a nonwoven fabric made of a thermoplastic resin such as polypropylene, polyethylene, polyester, or nylon. There is no restriction | limiting in particular also about the kind of nonwoven fabric, The nonwoven fabric manufactured by various manufacturing methods, such as card | curd embossing and a spun bond, can be used suitably.

  The fastening portion arranged at the other end of the tension member is for maintaining the state where the three-dimensional gather is pulled, and the fastening force at the fastening portion is higher than the restoring force in the state pulled by the tension member. It is preferable that it is strong and can maintain the state which pulled the solid gathers right and left favorably.

  In addition, the above-described fastening portion can be fastened to, for example, a top sheet or a back sheet constituting the absorbent article, and can be disposable when the wearer's clothing or the absorbent article is a urine pad. By fixing to a diaper or the like, the three-dimensional gather can be spread toward the outside of the absorber so as to effectively function.

[3-2] Solid gathering:
The structure of the three-dimensional gathers used for the absorbent article of the present invention can employ the structure used for conventional disposable diapers and other absorbent articles. For example, as shown in FIGS. 1A to 1D, a three-dimensional gather elastic material 36 (36a, 36b) is sandwiched and fixed between layers of the water-repellent sheet 32 (32a, 32b), and the three-dimensional gather elastic materials 36a, 36b contract. A material in which a gather is formed by force can be suitably used.

  The three-dimensional gather may be separately provided with a water-repellent sheet for three-dimensional gather, or may be formed by a part of the sheet material constituting the diaper. For example, the tape-type disposable diaper 1 </ b> E shown in FIG. 5 is an example in which the three-dimensional gathers 26 a and 26 b are formed by a part of the water repellent sheet 32 constituting the side sheet 19. Such a water-repellent sheet may be a non-woven fabric produced by a method such as card embossing or spunbond, but a non-woven fabric sheet such as SMS or SMMS having a high waterproof property is more preferable.

  The three-dimensional gather may be an inward gather that tilts toward the inside of the diaper, or a three-dimensional gather (such as a C-folded gather or a Z-folded gather) in which a bent portion or a folded portion is formed in a part of the height direction. You can also For example, the absorbent article 1 shown in FIG. 1A to FIG. 1D is an example in which the three-dimensional gather 26 (26a, 26b) is inverted and gathered, and the absorbent article 1 shown in FIG. 3A and FIG. 26a and 26b) are Z-fold gathers. As shown in FIGS. 3A and 3B, when the three-dimensional gather 26 (26a, 26b) is a Z-fold gather, the vicinity of the Z-folded portion of the three-dimensional gather 26a, 26b (that is, the absorber 22). By fixing one end portions 71x and 71y of the tension members 71a and 71b in the vicinity of the bent portion protruding to the left and right edges, the three-dimensional gathers 26a and 26b can be satisfactorily widened to the left and right.

  Further, for example, as shown in FIGS. 1A and 1C, the joining portion 27 at the end of the three-dimensional gathers 26 a and 26 b is arranged on the upright side of the three-dimensional gather so that the three-dimensional gathers 26 a and 26 b spread more widely to the left and right. You may be comprised so that the joining margin of the junction part 27a of the front end side of a three-dimensional gather may become shorter than the junction part 27b.

[3-3] Absorber:
The absorber is a member for absorbing and holding the wearer's urine. The absorber is made of an absorbent material because it needs to absorb and retain the wearer's urine and body fluid. Usually, the absorber is interposed between the top sheet and the back sheet by being sandwiched between the top sheet and the back sheet and sealing the peripheral edge thereof.

  Examples of the absorbent material constituting the absorber include conventionally known absorbent materials usually used for disposable diapers and other absorbent articles, such as fluff pulp, super absorbent polymer (Super Absorbent Polymer; hereinafter referred to as “SAP”). And a hydrophilic sheet. Use fluff pulp made of wood pulp or non-wood pulp defibrated, SAP as sodium polyacrylate, hydrophilic sheet as tissue paper, absorbent paper, hydrophilized non-woven fabric Is preferred.

  These absorbent materials are usually used as a single-layer or multi-layer mat. Under the present circumstances, 1 type may be used independently among the said absorptive materials, and 2 or more types may be used together. Especially, what used together about 10-500 mass parts SAP with respect to 100 mass parts of fluff pulp is preferable. At this time, the SAP may be uniformly mixed in each mat of fluff pulp, or may be arranged in layers between the layers of the multilayer fluff pulp.

  In addition, a sheet (second sheet) for diffusing liquid such as urine and body fluid may be incidentally disposed on the surface side of the absorber (for example, between the absorber and the top sheet). . When this second sheet is attached, due to the wearer's posture, etc., even when the space on the back side of the top sheet is not sufficiently formed, the absorption rate of urine, body fluid, etc. is difficult to decrease, and the absorption rate decreases. It is possible to prevent leakage of urine and body fluids.

  Examples of the material constituting the second sheet include hydrophilic and liquid-permeable materials such as woven fabric, non-woven fabric, porous plastic, and fluff pulp. Examples of these constituent materials include polypropylene, polyethylene, polyester, rayon, acetate, or composite fibers thereof, and pulp. As the pulp, crimped fibers such as curly cellulose fibers can be suitably used.

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

  The entire absorbent body is preferably encapsulated by a hydrophilic sheet. Such a configuration has an advantage that SAP can be prevented from leaking from the absorber and shape stability can be imparted to the absorber.

[3-4] Top sheet:
A top sheet is a sheet | seat arrange | positioned so that the surface (surface located in a wearer's skin side at the time of mounting | wearing of a diaper) may be coat | covered. At least a part (all or a part) of the top sheet is made of a liquid-permeable material because the absorber disposed on the lower surface side (back surface side) needs to absorb the wearer's urine. Usually, at least near the surface of the absorber, it is made of a liquid-permeable material that can permeate the wearer's urine and body fluid. As long as at least a part is made of the liquid permeable material, the entire top sheet is not necessarily made of the liquid permeable material.

  Examples of the liquid permeable material constituting the top sheet include a woven fabric, a nonwoven fabric, and a porous film. Among these, it is preferable to use a non-woven fabric made of a thermoplastic resin such as polypropylene, polyethylene, polyester, or nylon and subjected to a hydrophilic treatment. There is no restriction | limiting in particular also about the kind of nonwoven fabric, The conventionally well-known nonwoven fabric manufactured by various manufacturing methods, such as air through (card hot air), card | curd embossing, and a spun bond, can be used suitably.

  The top sheet may be composed of a single sheet material, but may be composed of a plurality of sheet materials.

[3-5] Backsheet:
A backsheet is a sheet | seat arrange | positioned so that the back surface (surface located in the side far from a wearer's skin at the time of mounting | wearing of a diaper) may be coat | covered. The back sheet is made of a liquid-impermeable material because it is necessary to prevent the wearer's urine from leaking outside the diaper.

  There is no restriction | limiting in particular about the arrangement position of a back seat | sheet. From the viewpoint of preventing leakage of urine absorbed by the absorber, it is preferable that a back sheet is disposed at least in a portion where the absorber exists.

  Examples of the liquid-impermeable material constituting the backsheet include a liquid-impermeable film made of a resin such as polyethylene. Among these, a microporous polyethylene film is preferably used. This microporous polyethylene film has a large number of fine pores of 0.1 to several μm, and is liquid impervious but has moisture permeability, so that the inside of the diaper can be prevented from being steamed There is.

  A cover sheet may be bonded to the outer surface side of the back sheet. This cover sheet is used to reinforce the back sheet and improve the feel (tactile feeling) of the back sheet.

  Examples of the material constituting the cover sheet include woven fabric and non-woven fabric. Especially, it is preferable to use the dry nonwoven fabric and wet nonwoven fabric which consist of thermoplastic resins, such as polyethylene, a polypropylene, and polyester.

[3-5] Fastening tape:
When the absorbent article of the present invention is a tape-type disposable diaper 1E as shown in FIG. 5, the front body 2 arranged so as to extend from the left and right side edges 6a, 6b of the back body 6, A fastening tape 11 for fixing the back body 6 is provided.

  The fastening member of the fastening tape may be an adhesive fastener that is fixed by an adhesive, but a mechanical fastener (planar fastener) that is fixed by mechanical coupling is preferably used. In addition to high fastening force, the mechanical fastener has an advantage that the fastening force does not decrease even when the detachment is performed a plurality of times.

  For example, a tape-type disposable diaper 1E shown in FIG. 5 is an example in which a mechanical fastener 46 is used as a fastening member. A hook material 46 a is attached near the tip of the fastening tape 11, while a front patch 13 made of a loop material 46 b is attached to the front body 2, and the fastening tape 11 is attached to the front patch 13. It is comprised so that it can stop.

  The number of fastening tapes is not particularly limited, and an appropriate number of fastening tapes may be attached according to the dimensions of the wearer's body shape (specifically, around the waist, around the legs, etc.). In general, a pair of disposable diapers for infants (one each on the left and right) is attached, and a pair of disposable diapers for adults (two on the left and two on the left) are attached.

[3-6] Various elastic materials:
When the absorbent article of the present invention is a disposable diaper, it is preferable to dispose elastic materials such as a leg elastic material, a waist elastic material, and an abdominal elastic material.

  The leg circumference elastic material is an elastic material arranged along the leg circumference opening. By arranging the leg-stretchable material, a gather (leg gather) rich in stretchability can be formed in the leg-surrounding opening. Therefore, it is difficult to form a gap around the leg, and urine leakage from the opening around the leg can be effectively prevented.

  It is preferable that this leg-around elastic material is disposed at a portion outside the standing line of the three-dimensional gather. With such a configuration, it is possible to improve the wearing feeling and wearing feeling of the crotch part while ensuring a sufficient leakage preventing effect of the three-dimensional gather.

  The waist elastic material is an elastic material arranged along the waist opening. By arranging the elastic material around the waist, a gather (waist gather) rich in elasticity can be formed in the waist opening. This waist gather makes it difficult for gaps to be formed around the waist and prevents urine leakage from around the waist. In addition, the fit of the diaper to the wearer is improved, and the diaper is prevented from falling down.

  For example, in the tape-type disposable diaper 1E shown in FIG. 5, a belt-like waist elastic member 42 is disposed along the edge of the back body 6 of the diaper, and the leg elastic member 40 is provided along the leg opening. This is an example of arrangement. In addition, the belt-shaped waist circumference elastic material 42 can be comprised with elastic foams, such as a urethane foam. In the illustrated example, the waist elastic member 42 is disposed only on the back body (back side), but the waist elastic material may be disposed on the front body (abdominal side).

  In a pants-type disposable diaper, a stretchable material around the waist is generally fixed to a portion around the waist of the exterior sheet between the layers of the exterior sheet. The “layer between exterior sheets” is not limited to the one in which the elastic material 42 around the waist is fixed between the layers where the inner sheet 16a and the outer sheet 16b are bonded as shown in FIGS. 4A and 4B. For example, a material in which an elastic material around the waist is fixed between layers of the folded portion of the inner sheet or the outer sheet is also included.

  When the absorbent article of the present invention is a pants-type disposable diaper, as shown in FIGS. 4A and 4B, it is also preferable to arrange an abdominal circumference stretchable material 44. By arranging the elastic material around the abdomen, it is possible to form a highly elastic tammy gather around the abdomen of the wearer. This Tammy Gather, together with West Gather, can make the diaper fit and anti-slip effect even better.

  For these stretchable materials, after considering the degree of shrinkage of gathers, etc., the constituent material, the elongation rate of the material, the stretched state at the time of fixing, etc. may be determined.

  As an elastic material, the elastic material which has been used with the conventional disposable diaper can be used conveniently. Specific examples include elastic rubber, elastic film, elastic foam (urethane foam, etc.), etc. in addition to natural rubber flat rubber and synthetic rubber (urethane rubber, etc.) elastic thread. it can.

  The stretchable material is preferably fixed in the stretched state in order to exert a sufficient stretch force. For example, when the elastic material is a flat rubber made of natural rubber or a thread rubber made of an elastic thread of synthetic rubber, it is preferably fixed in an extended state of 120 to 400%, and fixed in an extended state of 200 to 300%. More preferably. By fixing in the extended state in such a range, it is possible to apply a sufficient expansion / contraction force without applying an excessive tightening force to the wearer.

  The stretchable material as described above is fixed to other constituent members of the diaper by an adhesive or other means. The fixing method may be, for example, adhesion using a hot melt adhesive or other highly fluid adhesive, or may be welding by heat such as heat sealing or ultrasonic waves.

[4] Application target:
Note that the absorbent article of the present invention can absorb various kinds of urine pads, tape-type disposable diapers, and pants-type disposable diapers as described above, as long as three-dimensional gathers are arranged on both sides of the absorbent body. It can be applied to sex goods.

[5] Method for producing absorbent article:
Hereinafter, the manufacturing method of the absorbent article of this invention is demonstrated in the example in the case of manufacturing the urine pad 1A shown to FIG. 1A.

  In the manufacturing method of the absorbent article 1 (urine pad 1A) of the present invention, first, the absorbent body 22 wrapped in a hydrophilic sheet on the surface of a long sheet material (back sheet material) that is a material of the back sheet 20. And a sheet material (top sheet material) as a material of the top sheet 18 is placed on the surface.

  At this time, as the top sheet material, two types of a top sheet material corresponding to the center sheet and a top sheet material corresponding to the side sheet are used. A three-dimensional gather 26 (26a, 26b) is formed by providing a folded portion on the sheet material corresponding to the side sheet.

  Next, strip-shaped tension members 71 (71a, 71b) are connected to the formed three-dimensional gathers 26a, 26b, respectively. The three-dimensional gathers 26a, 26b are located on the side opposite to the fixed end (one end 71x, 71y) of the tension members 71a, 71b from the side edge of the absorber 22 on the other end (the other end 71p, 71q). A fastening portion 72 capable of fixing the tension members 71a and 71b in a state of being pulled outward toward the edge is disposed.

  Finally, the obtained absorbent article continuum is cut into individual absorbent articles (urine pads) to produce a urine pad 1A as the absorbent article 1.

  Moreover, when manufacturing a pants-type disposable diaper or a tape-type disposable diaper as an absorbent article, each of the three-dimensional gathers 26a and 26b formed in the step of manufacturing a diaper continuous body according to a conventionally known method, The disposable diaper as an absorbent article of the present invention can be manufactured by connecting the belt-like tension members 71 (71a, 71b).

  The series of steps as described above can be continuously performed by mechanical means. For example, by adopting a method / apparatus such as continuously feeding a long sheet material from a roller, continuous production of a tape-type diaper becomes possible, which contributes to improvement of productivity.

  EXAMPLES Hereinafter, although this invention is demonstrated concretely based on an Example, this invention is not limited to these Examples. However, the absorbent article of the present invention encompasses all absorbent articles having the invention-specific matters, and is not limited to the following examples.

[Example 1]
As an absorbent article of Example 1, a urine pad was produced. The specific structure is the structure of the urine pad 1A shown in FIGS. 1A and 1B. This urine pad 1A is an adult urine pad, the length in the longitudinal direction is 490 mm, and the length in the width direction is 210 mm.

  The length from the standing line to the tip of each solid gather 26a, 26b (ie, the height of the solid gather) is 25 mm, and the distance between the pair of solid gathers 26a, 26b (ie, between the standing lines in the pair of solid gathers) The interval) was 140 mm. Moreover, about the joining part 27 of the edge part of the three-dimensional gathers 26a and 26b, the length of the joining part 27b on the standing line side of the three-dimensional gather is 60 mm, and the length of the joining part 27a on the tip side of the three-dimensional gather is 30 mm. .

  And the tension members 71a and 71b were arrange | positioned at the front end side of such a pair of solid gathers 26a and 26b, respectively. The arrangement positions of the tension members 71a and 71b were 80 mm from one end of the urine pad.

  The tension members 71a, 71b have a length from one end 71x, 71y (fixed end) to the other end 71p, 71q of 40 mm, and correspond to the width of the tension member (that is, the longitudinal direction of the urine pad). The length) was 50 mm. And the fastening part 72 was arrange | positioned by the width | variety of 15 mm (length corresponding to the width direction of a urine pad) in the vicinity of the other edge part 71p, 71q of this tension member 71a, 71b.

[Mounting test]
The other ends 71p and 71q of the tension members 71a and 71b in the urine pad 1A according to the first embodiment are picked and interlocked with the tension members 71a and 71b to connect the three-dimensional gathers 26a and 26b to the absorber 22. Pulled from the side edge to the outside of the side edge. Thereafter, the fastening portions 72 of the tension members 71a and 71b were fastened to the inner side surface of the diaper in a state where the three-dimensional gathers 26a and 26b were pulled toward the outer side edge of the absorber. Thereby, the state which expanded the three-dimensional gathers 26a and 26b to the right and left of the absorber 22 was able to be maintained. When the urine pad in such a state is attached to the wearer and used, the three-dimensional gather is not crushed by the wearer's buttocks, and urine leakage due to the collapse of the three-dimensional gather can be effectively prevented. It was.

  The absorbent article of the present invention can be used for absorbent articles such as disposable diapers and urine pads for infants or for adults such as the elderly and persons with disabilities who need care.

It is the top view which looked at the urine pad which is one Embodiment of the absorbent article of this invention from the top sheet side. It is a schematic sectional drawing which shows the A-A 'cross section of the urine pad shown to FIG. 1A. It is a top view which shows the state which pulled | pulled the tension | pulling member of the urine pad shown to FIG. 1A toward the width direction outer side of an absorbent article. It is a schematic sectional drawing which shows the B-B 'cross section of the urine pad shown to FIG. 1C. It is the top view which looked at the urine pad which is other embodiment of the absorbent article of this invention from the top sheet side. It is sectional drawing which shows other embodiment of the absorbent article of this invention. It is sectional drawing which shows other embodiment of the absorbent article of this invention. It is a perspective view which shows the underpants type disposable diaper of other embodiment of the absorbent article of this invention. It is a top view showing the state which developed the underpants type disposable diaper shown in Drawing 4A, and was seen from the top sheet side. It is a partially cutaway sectional view showing a tape type disposable diaper of further another embodiment of the absorptive article of the present invention, and is a figure showing the state where a tape type disposable diaper was developed and it was seen from the top sheet side.

Explanation of symbols

1: Absorbent article, 1A, 1B, 1C: Urine pad, 1D: Pants-type disposable diaper, 1E: Tape-type disposable diaper, 2: Front body, 4: Crotch, 6: Rear body, 6a, 6b: Side edges (Side edge of back body), 8: side flap, 9: joint, 10: opening around waist, 11, 11a, 11b: fastening tape, 12, 12a, 12b: opening around leg, 13: front patch , 14: Absorbent body, 16: Exterior sheet, 16a: Inner sheet, 16b: Outer sheet, 18: Top sheet, 19: Side sheet, 20: Back sheet, 22: Absorber, 26, 26a, 26b: Solid gather 27, 27a, 27b: Joining allowance (joint allowance for three-dimensional gather), 32, 32a, 32b: Water-repellent sheet, 36, 36a, 36b: Three-dimensional gather stretchable material, 37, 37a, 3 b: fit gather, 40: elastic material around leg, 42: elastic material around waist, 44: belly elastic material, 46: mechanical fastener, 46a: hook material, 46b: loop material, 71, 71a, 71b: tension member, 71x, 71y: One end (one end of the tension member), 71p, 71q: The other end (the other end of the tension member), 72: Insertion member, 73: Fastening portion, 74: Pull-in prevention part, 75: Temporary fixing part, 76: Picking part, 78, 79: Through hole.

Claims (3)

An absorber, at least partly made of a liquid-permeable material, a top sheet arranged to cover the surface of the absorber, and a liquid-impermeable material so as to cover the back surface of the absorber An absorbent article comprising: a back sheet disposed; and a pair of left and right three-dimensional gathers disposed on at least both sides of the absorbent body, each comprising a water-repellent sheet,
A pair of left and right tension members each having one end fixed to at least the pair of right and left three-dimensional gathers;
The said tension member is an absorbent article which has a fastening part which can fix the said tension member in the state which pulled each said three-dimensional gather from the side edge of the said absorber toward the side edge outward.   2. The absorbent article according to claim 1, wherein the one end portion of the tension member is fixed to the upper end portion side of the center portion from the lower end portion to the upper end portion of the three-dimensional gather.   The absorbent article according to claim 1 or 2, wherein the other end of the tensile member is temporarily fixed to a part of the absorbent article.

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