JP2023079807A - disposable diaper - Google Patents

Abstract

To provide a disposable diaper which allows a fastening tape to be securely tied to a target tape.SOLUTION: In a disposable diaper, a target tape 11 is provided on an outer surface side of a diaper body 2. The target tape 11 has a first region 17 and a second region 18 in a width direction x, and a net structure 14 is formed of threads on a base layer 12. The net structure 14 has a lattice part 15 and a skewing part 16. In the skewing part 16, when a part in which the threads are arranged in a manner to obliquely connect two lattice points from the back side to the front side from one side to the other side in the width direction x is a first skewing part 16A, and a part in which the threads are arranged in a manner to obliquely connect two lattice points from the back side to the front side from the other side to the one side in the width direction x is a second skewing part 16B, in the first region 17, the number of the first skewing parts 16A is larger than the number of the second skewing parts 16B, and in the second region 18, the number of the second skewing parts 16B is larger than the number of the first skewing parts 16A.SELECTED DRAWING: Figure 4

Description

The present invention relates to a tape-type disposable diaper.

Conventionally, tape-type disposable diapers are widely known. Tape-type disposable diapers are worn by forming them into a pants shape by fastening the fastening tapes provided on the left and right sides of the diaper to the target tapes provided on the outer surface of the diaper. discloses such a disposable diaper.

JP-A-2000-185073 Japanese Patent Application Laid-Open No. 2005-296603 JP 2012-50575 A

In a tape-type disposable diaper, it is required that the fastening tape can be firmly attached to the target tape when worn, so that the disposable diaper can be stably worn around the wearer's waist. The present invention has been made in view of the above circumstances, and its object is to provide a disposable diaper provided with fastening tapes on both sides in the width direction and a target tape for fixing the fastening tapes on the outer surface side, To provide a disposable diaper in which a hook member of a fastening tape can be easily engaged with a target tape.

The disposable diaper according to the embodiment of the present invention, which can solve the above-mentioned problems, is a tape-type disposable diaper having a width direction and a front-rear direction and having fastening tapes provided on both sides in the width direction of the main body of the diaper. The fastening tape is provided with a hook member of a hook-and-loop fastener; The outer surface side of the diaper body is provided with a target tape to which the hook member of the fastening tape is engaged when the diaper is worn; The target tape is attached to the base and an engaging layer provided on the outer surface side of the base layer and formed with a net structure of threads; The target tape includes an oblique portion arranged so as to obliquely connect at least two lattice points of the square lattice; the target tape has two regions in the width direction, and the first region is located on one side in the width direction. and a second region located on the other side in the width direction; in the oblique portion, the yarn has two lattice points from one side to the other side in the width direction from the rear side to the front side in the front-rear direction. The first oblique portion is arranged so as to be connected obliquely to the first oblique portion, and the yarn obliquely connects two lattice points from the other side to the one side in the width direction from the rear side to the front side in the front-rear direction. Assuming that the arranged ones are the second oblique parts, the number of the first oblique parts is larger than the number of the second oblique parts in the first area, and the number of the second oblique parts is the second in the second area. It is characterized by having more than one oblique portion.

As described above, the disposable diaper according to the embodiment of the present invention is provided with a target tape having a net structure formed by threads, and the target tape has two regions, a first region and a second region, in the width direction. The first region is formed to include many first diagonal portions in the net structure, and the second region is formed to include many second diagonal portions in the net structure, so that the disposable diaper When wearing, even if the fastening tape is provided with one tab, the hook member of the tab is easily engaged with the corresponding area of the target tape, so the fastening tape is firmly attached to the target tape. can be fastened.

In another embodiment, the target tape may have a third area and a fourth area, which are two additional areas in the front-rear direction. In this case, the target tape includes a first area located on the rear side in the front-rear direction and on one side in the width direction, a second area located on the rear side in the front-rear direction and on the other side in the width direction, A third area located on the front side in the front-rear direction and on one side in the width direction and a fourth area located on the front side in the front-rear direction and located on the other side in the width direction are arranged, and the first area and the fourth area are arranged. Preferably, the number of the first diagonal portions is greater than the number of the second diagonal portions, and the number of the second diagonal portions is preferably greater than the number of the first diagonal portions in the second region and the third region. In the case where the target tape is formed in this way, for example, two tabs of the fastening tape are provided side by side in the front-rear direction, when the disposable diaper is worn, each of the two tabs of the fastening tape is pulled. The hook member can be easily engaged with the corresponding area of the target tape and the fastening tape can be firmly attached to the target tape.

In an embodiment of the disposable diaper of the present invention, the fastening tapes arranged on both sides in the width direction of the diaper body include a first tape body portion attached to one side of both sides in the width direction of the diaper body, and a first tape body portion. a first fastening tape having a first tab portion extending at least on one side in the width direction from a portion; a second tape body portion attached to the other side of both width direction sides of the diaper body; and a second tape body. It preferably includes a second fastening tape having a second tab portion extending at least on the other widthwise side from the portion.

As another embodiment of the disposable diaper of the present invention, the first tab section has a front side tab section and a rear side tab section which extend in the width direction from the first tape main body section and are spaced apart in the front-rear direction. However, the second tab portion may have a front side tab portion and a rear side tab portion that extend in the width direction from the second tape body portion and are spaced apart in the front-rear direction. In this case, a hook member is provided on each of the front side knob portion and the rear side knob portion, the hook member has a base and a plurality of engaging elements protruding from the base, and is provided at least on the rear side knob portion. Preferably, the hook member has the engaging elements arranged side by side in the front-rear direction.

Furthermore, as an embodiment of the hook member, the rear side knob portion includes an outer hook member as a hook member, and an inner hook member separated from the outer hook member in the width direction and provided inward in the width direction from the outer hook member. A hook member is provided, and the outer hook member has an engaging element provided in a region along the inner edge in the width direction, and the height of the engaging element provided in the region along the inner edge in the width direction is greater than that in the region outside in the width direction. The height of the engaging element is higher than the height of the element, and the inner hook member is provided in a region along the outer edge in the width direction. It may be formed higher than the height of the element.

An outer hook member and an inner hook member separated in the width direction from the outer hook member and provided inward of the outer hook member in the width direction are provided as hook members in the rear side knob portion. In the member, the size of the top of the engaging element provided in the region along the inner edge in the width direction is larger than the size of the top of the engaging element provided in the region outside in the width direction. The size of the top of the engaging element provided in the region along the outer edge in the width direction is larger than that of the top of the engaging element provided in the region inward in the width direction. may be formed to be larger than the size of

In the case where two tab portions of the fastening tape are arranged side by side in the front-rear direction, the rear tab portion can be adjusted by changing the shape of the hook member as described above in the region where the rear tab portion overlaps the front tab portion. It can also be facilitated to engage on the front tab.

When the diaper is put on, the first tab portion of the first fastening tape is engaged with at least the first region, and the second tab portion of the second fastening tape is configured to be engaged with at least the second region. preferably.

Further, as one embodiment of the disposable diaper of the present invention, the two lattice points obliquely connected by the thread in the first oblique portion are two adjacent square lattice points. It is preferable that the two lattice points obliquely connected by the thread in the second oblique portion are two adjacent quadrangular lattice points.

As one embodiment of the disposable diaper of the present invention, the target tape may have a first target tape and a second target tape. In this case, the first target tape can be arranged on one side in the width direction as the first area, and the second target tape can be arranged on the other side in the width direction as the second area.

The disposable diaper according to the embodiment of the present invention can easily engage the hook member of the fastening tape with the target tape.

An example of the disposable diaper of this invention is shown and the top view which looked at the disposable diaper from the skin surface side is represented. An example of the top view which looked at the disposable diaper shown in FIG. 1 from the outer surface side is represented. 3 represents a cross-sectional view of the disposable diaper shown in FIGS. 1 and 2, taken along line III-III. FIG. Fig. 3 shows a partially enlarged plan view of one embodiment of a target tape provided on the disposable diaper shown in Fig. 2; Fig. 3 shows a partially enlarged plan view of another embodiment of the target tape provided on the disposable diaper shown in Fig. 2; The enlarged plan view of the fastening tape provided in the width direction one side of the disposable diaper shown in FIG. 1 is represented. The enlarged plan view of the fastening tape provided in the other side of the width direction of the disposable diaper shown in FIG. 1 is represented. 8 shows a cross-sectional view of the fastening tape shown in FIG. 6 taken along line VIII-VIII. 9 shows a modification of the cross-sectional view of the fastening tape shown in FIG. 8. FIG. 9 shows a modification of the cross-sectional view of the fastening tape shown in FIG. 8. FIG. An example of the perspective view of the wearing state of the disposable diaper which is one of the embodiments of this invention is shown.

A configuration of a disposable diaper according to an embodiment of the present invention will be described with reference to the drawings. The invention is not limited to the embodiments shown in the drawings.

1 to 3 show an example of the disposable diaper of the present invention. 1 shows a plan view of the disposable diaper as seen from the skin side, FIG. 2 shows an example of a plan view of the disposable diaper shown in FIG. 1 as seen from the outer surface side, and FIG. 2 shows a III-III cross-sectional view of the disposable diaper shown in FIG. In the drawings of the present application, the arrow x represents the width direction, the arrow y represents the front-rear direction, and the direction perpendicular to the plane formed by the arrows x and y represents the thickness direction z. 1 and 2, the upper side of the drawing corresponds to the front side of the diaper, and the lower side of the drawing corresponds to the rear side of the diaper.

The disposable diaper 1 has a diaper body 2 and fastening tapes 31 provided on both sides of the diaper body 2 in the width direction x. 1 and 2, the diaper body 2 has a front side portion, a rear side portion, and a crotch portion positioned therebetween, and fastening tapes 31 are attached to both sides of the rear side portion of the diaper body 2 . . When the disposable diaper 1 is worn, the front side portion is applied to the wearer's abdomen, the crotch portion is applied to the wearer's crotch portion, and the rear side portion is applied to the wearer's back. By fixing to the target tape 11 provided on the outer surface side, it is formed into a pants shape for use. Although not shown in the drawings, the fastening tapes 31 may be attached to both sides of the front side portion of the diaper body 2 and the target tapes 11 may be provided on the outer surface side of the rear side portion of the diaper body 2 .

The disposable diaper 1 has a front-rear direction y and a width direction x. The front-rear direction y corresponds to the direction extending in the front-rear direction between the wearer's crotch when the disposable diaper is worn. The width direction x means a direction on the same plane as the disposable diaper and perpendicular to the front-rear direction y, and corresponds to the lateral direction of the wearer when wearing the disposable diaper. In the present invention, the skin side of the disposable diaper means the side facing the skin of the wearer when wearing the disposable diaper, and the outer side of the disposable diaper means the side facing the wearer when wearing the disposable diaper. means opposite side.

The diaper main body 2 has a top sheet 3, a back sheet 4, and an absorbent body 5 arranged therebetween. The top sheet 3 is a sheet positioned on the side of the wearer when the disposable diaper is worn, and the back sheet 4 is a sheet positioned on the side opposite to the wearer when the disposable diaper is worn, that is, on the outer surface side. . Urine or the like excreted by the wearer passes through the top sheet 3 and is stored in the absorbent body 5 . The back sheet 4 prevents excrement from leaking to the outside.

The top sheet 3 is preferably liquid-permeable. Examples of the top sheet 3 include nonwoven fabrics made of hydrophilic fibers such as cellulose, rayon, and cotton, polyolefins (eg, polypropylene, polyethylene), polyesters (eg, PET), polyamides (eg, For example, it is possible to use a nonwoven fabric formed from hydrophobic fibers such as nylon, the surface of which is hydrophilized with a surfactant. As the top sheet 3, a woven fabric, a knitted fabric, a perforated resin film, or the like may be used.

The back sheet 4 is preferably liquid-impermeable, and non-woven fabric made of hydrophobic fibers such as polyolefin (e.g., polypropylene, polyethylene), polyester (e.g., PET), polyamide (e.g., nylon), or a resin film. etc. can be used. As the back sheet 4, a laminate of a nonwoven fabric and a film may be used.

Absorber 5 is not particularly limited as long as it contains an absorbent material capable of absorbing excrement such as urine. As the absorbent body 5, for example, a molded body obtained by molding an absorbent material into a predetermined shape is used, or the molded body is covered with a covering sheet such as a paper sheet (for example, tissue paper or thin paper) or a liquid-permeable nonwoven fabric. can use things. Examples of absorbent materials include hydrophilic fibers such as pulp fibers, and water-absorbing resins such as polyacrylic acid-based, polyaspartic acid-based, cellulose-based, starch-acrylonitrile-based, and the like. The absorbent material may also include polyolefin fibers such as polyethylene and polypropylene, polyester fibers such as PET, and heat-fusible fibers such as polyamide fibers. These heat-fusible fibers may be hydrophilized with a surfactant or the like in order to increase affinity with urine or the like.

The absorbent material preferably contains hydrophilic fibers in order to increase the rate of absorption of urine and the like. Moreover, from the viewpoint of increasing the absorption capacity, the absorbent material preferably contains a water absorbent resin. Therefore, the absorbent preferably contains hydrophilic fibers (especially pulp fibers) and a water absorbent resin. In this case, it is preferable to use, for example, an aggregate of hydrophilic fibers mixed with or sprinkled with a water absorbent resin.

The absorbent body 5 may be a sheet absorbent body. Examples of sheet-like absorbent bodies include those formed so as to contain a water-absorbing resin between non-woven fabrics and not contain pulp fibers. The sheet-like absorbent body thus formed has a water-absorbing resin between the nonwoven fabrics, so that a high absorption capacity can be achieved. Moreover, since the sheet-like absorbent body does not have pulp fibers between the nonwoven fabrics, it can be formed thin without being bulky.

The shape (planar shape) of the absorber 5 is not particularly limited. The shape of the absorber (or the molded body constituting the absorber) may be appropriately determined according to the application, and examples thereof include rectangular, hourglass, gourd, battledore, and the like. In order to prevent distortion even when the absorbent body 5 is sandwiched between the wearer's thighs and pressed in the width direction x, the absorbent body 5 or the molded body constituting the absorbent body 5 is formed in an hourglass shape. preferably.

As one embodiment, the diaper body 2 preferably has side sheets 6 joined to both sides of the top sheet 3 in the width direction x, the side sheets 6 extending outward in the width direction x from the top sheet 3 . The sidesheets 6 are preferably liquid-impermeable and can be made of a sheet material that can be used for the backsheet 4 .

It is preferable that the side sheets 6 form rising flaps 7 on both sides of the top sheet 3 in the width direction x. In this case, as shown in FIG. 3, the side sheet 6 is preferably provided with a standing elastic member 8 extending in the front-rear direction y at a portion inward in the width direction x of the joint portion 6A with the top sheet 3. . The inner portion of the side seat 6 is raised by the contractile force of the elastic member 8 for standing up, and the rising flap 7 can be formed. By providing the rising flap 7, lateral leakage of urine or the like can be prevented. The inner surfaces of the ends of the rising flaps 7 in the front-rear direction y may be joined onto the top sheet 3, thereby making it easier for the rising flaps 7 to rise toward the wearer's skin when the diaper is put on.

When a nonwoven fabric is used for each sheet described above, it is preferable to use a spunbonded nonwoven fabric, an air-through nonwoven fabric, a point-bonded nonwoven fabric, a melt-blown nonwoven fabric, an air-laid nonwoven fabric, an SMS nonwoven fabric, or the like. The mass per unit area of each sheet is preferably 10 g/m ² or more, more preferably 12 g/m ² or more, and preferably 40 g/m ² or less, more preferably 30 g/m ² or less.

The diaper main body 2 is preferably provided with leg elastic members 9 extending in the front-rear direction y on both sides in the width direction x. By providing the leg elastic members 9, it is possible to form gathers around the wearer's legs to improve fit around the legs and prevent side leakage.

The diaper main body 2 may be provided with waist elastic members 10 extending in the width direction x at the ends in the front-rear direction y. The contractile force of the waist elastic member 10 forms waist gathers along the wearer's torso, preventing leakage of excrement such as urine from the back or abdomen.

As each of the elastic members described above, it is possible to use elastic stretchable materials such as polyurethane thread, polyurethane film, natural rubber, etc., which are usually used for disposable diapers. The elastic member is preferably fixed in a stretched state with an adhesive such as a hot-melt adhesive. For example, a polyurethane thread having a fineness of 40 to 1,240 dtex is stretched at a magnification of 1.1 to 5.0 times, arranged, and fixed. As the adhesive, it is preferable to use a rubber-based hot-melt adhesive. Note that the magnification is 1.0 in the non-expanded state.

The diaper main body 2 is provided with fastening tapes 31 on both sides in the width direction x. The fastening tape 31 is provided with a hook member 37 of a surface fastener, and when the disposable diaper 1 is put on, the hook member 37 of the fastening tape 31 is attached to the target tape 11 provided on the outer surface side of the diaper body 2. . The fastening tape 31 provided on one side of the diaper body 2 in the width direction x is referred to as a first fastening tape 31A, and the fastening tape 31 provided on the other side of the diaper body 2 in the width direction x is referred to as a second fastening tape. 31B. The one side and the other side in the width direction x of the disposable diaper 1 correspond to the right side and the left side or the left side and the right side when the disposable diaper 1 is worn. The left side of the disposable diaper 1 is the right side of the disposable diaper 1 and the other side in the width direction x.

As shown in FIGS. 6 to 8, the fastening tape 31 is configured by providing a hook member 37 on a tape base material 36, and the hook member 37 is provided on the skin side of the tape base material 36. As shown in FIGS. 6 shows an enlarged plan view of the first fastening tape 31A provided on one side in the width direction x of the disposable diaper 1 shown in FIG. 1, and FIG. 7 shows the disposable diaper 1 shown in FIG. An enlarged plan view of the second fastening tape 31B provided on the other side of the width direction x is shown, and FIG. 8 shows a VIII-VIII cross-sectional view of the first fastening tape 31A shown in FIG. .

The fastening tape 31 has a tape body portion 32 at least partially attached to the diaper body 2, and a tab portion 33 extending in the width direction x from the tape body portion 32. A tape base material 36 is attached to the tape body portion. 32 and a knob portion 33 , and the hook member 37 is preferably provided on the knob portion 33 . The first fastening tape 31A provided on one side of the diaper main body 2 in the width direction x is formed from a first tape main body portion 32A attached to one side of the diaper main body 2 in the width direction x and the first tape main body portion 32A. and a first knob portion 33A extending at least on one side in the width direction x. The second fastening tape 31B provided on the other side in the width direction x of the diaper main body 2 is formed from a second tape main body portion 32B attached to the other side in the width direction x of the diaper main body 2 and the second tape main body portion 32B. It has a second knob portion 33B extending at least to the other side in the width direction x.

Only one knob portion 33 may be provided on one fastening tape 31, or a plurality of knob portions 33 may be provided.

As one embodiment, even when there is one first knob portion 33A and one second knob portion 33B, two areas, the first area 17 and the second area 18, are provided in the width direction x, as will be described later. The target tape 11 having the first area 17 is formed so that the net structure 14 includes many first oblique portions 16A, and the second area 18 is formed so that the net structure 14 includes many second oblique portions 16B. , so that they are easily engaged with corresponding areas of the target tape 11 .

Further, as one embodiment, in the disposable diaper 1 shown in the drawings, one fastening tape 31 is provided with two knob portions 33 arranged side by side in the front-rear direction y. Specifically, the fastening tape 31 has a front knob portion 34 and a rear knob portion 35 which extend in the width direction x from the tape body portion 32 and are spaced apart in the front-rear direction y. and the rear side knob portion 35 are provided with hook members 37, respectively. The first tab portion 33A includes a front side tab portion 34 and a rear side tab portion 35 which extend in the width direction x from the first tape body portion 32A and are spaced apart in the front-rear direction y, and a second tab portion 33B. includes a front knob portion 34 and a rear knob portion 35 extending in the width direction x from the second tape body portion 32B and spaced apart in the front-rear direction y. are provided with hook members 37 respectively.

One hook portion 33 may be provided with only one hook member 37 , or may be provided with a plurality of hook members 37 . When a plurality of hook members 37 are provided in one knob portion 33, it is preferable that the plurality of hook members 37 be provided apart from each other in the width direction x. In the disposable diaper 1 shown in the drawings, one tab portion 33 includes an outer hook member 37O as the hook member 37, which is spaced apart from the outer hook member 37O in the width direction x and is located inside the outer hook member 37O in the width direction x. An inner hook member 37I provided on the side is provided.

As shown in FIG. 8, the hook member 37 is formed with a large number of engaging elements 39 protruding from the base 38 . The shape of the engaging element 39 is not particularly limited, and may be hook-shaped, anchor-shaped, mushroom-shaped, column-shaped, or the like.

As the tape base material 36, a nonwoven fabric, a woven fabric, a knitted fabric, a resin film, or a laminate of these can be used. In order to improve the adhesiveness between the tape base material 36 and the diaper body 2, the tape base material 36 is preferably made of a woven fabric, a knitted fabric, or a nonwoven fabric, and preferably made of a nonwoven fabric. more preferred.

A target tape 11 is provided on the outer surface side of the back sheet 4 . FIG. 4 shows a partially enlarged plan view of the target tape 11 provided on the disposable diaper 1 shown in FIG. , and an engaging layer 13 on which a net structure 14 of threads is formed. The mesh structure 14 functions as loops that engage the hook members 37 . By forming the target tape 11 in this way, it is possible to form the target tape 11 thin while ensuring the engaging force of the fastening tape 31 with the hook member 37 .

The base layer 12 can be composed of a sheet-like base material, preferably composed of a film layer. Constructing the base layer 12 from a film layer facilitates engagement of the hook member 37 with the thread network structure 14 formed on the base layer 12 .

The thread constituting the engaging layer 13 may be formed from any of synthetic fibers, semi-synthetic fibers, and natural fibers, and may be monofilaments or multifilaments. The threads forming the engagement layer 13 are fixed to the base layer 12 by, for example, an adhesive, or the threads forming the engagement layer 13 are fixed by providing an adhesive layer between the base layer 12 and the engagement layer 13. can be secured to the base layer 12 .

The mesh structure 14 of the engagement layer 13 includes a lattice portion 15 in which threads are arranged in a square lattice. Thereby, the network structure 14 can be stably formed on the base layer 12 . Preferably, the thread forms a knot at the lattice points of the square lattice. The network structure 14 may be formed from one thread or may be formed from a plurality of threads. It should be noted that the net structure 14 is preferably formed from a plurality of threads in terms of easy formation of the net structure 14 .

It is preferable that the threads forming the square lattice extend in the width direction x and the front-rear direction y. The lattice points of the square lattice are preferably arranged at a pitch of 0.5 mm or more and 10 mm or less in the width direction x and the front-rear direction y, and the pitch is more preferably 1 mm or more, further preferably 1.5 mm or more. 7 mm or less is more preferable, and 5 mm or less is even more preferable.

The mesh structure 14 of the engagement layer 13 further includes a diagonal portion 16 in which threads are arranged so as to diagonally connect at least two lattice points of the square lattice. The thread forming the oblique portion 16 extends obliquely to connect at least two grid points, and may extend to connect three or more grid points. In the net structure 14, one thread may form both the lattice portion 15 and the oblique portion 16, or the yarn forming the lattice portion 15 and the oblique portion 16 may be separate. good.

The slanted portion 16 includes a first slanted portion 16A and a second slanted portion 16B whose obliquely extending directions are different from each other. Specifically, the diagonal portion 16 is formed so that the two lattice points of the thread extend from one side to the other side in the width direction x (from the left side to the right side of the drawing in FIG. 4) toward the rear side in the front-rear direction y. A first oblique portion 16A arranged so as to be obliquely connected to the front side of the thread from the other side in the width direction x to one side (from the right side to the left side in FIG. 4). d) includes a second oblique portion 16B arranged so as to obliquely connect from the rear side to the front side in the front-rear direction y. The first oblique portion 16A and the second oblique portion 16B are lattice points that are adjacent by one or more in the width direction x and adjacent by one or more in the front-rear direction y. It is formed so as to connect each other. In FIG. 4, the first oblique portion 16A and the second oblique portion 16B are formed so as to connect lattice points that are two adjacent in the width direction x and one adjacent in the front-rear direction y. It is

One first oblique portion 16A and one second oblique portion 16B are formed by obliquely connecting two grid points with a thread. One thread may form a plurality of first skewed portions 16A, one thread may form a plurality of second skewed portions 16B, and a portion of one thread may form the first skewed portions 16A. The oblique portion 16A may be formed and the other portion may form the second oblique portion 16B. The number of the first skewed portions 16A and the number of the second skewed portions 16B can be obtained by counting the number of portions where the thread connects two grid points diagonally.

In one embodiment, the target tape 11 is configured such that the engagement layer 13 has the net structure 14 including the grid portions 15 and the diagonal portions 16 as described above, and then, as shown in FIG. The tape 11 has two regions in the width direction x, a first region 17 located on one side of the width direction x (the left side of the drawing in FIG. 4) and the other side of the width direction x (the drawing in FIG. 4) ), the number of the first oblique portions 16A is greater than the number of the second oblique portions 16B in the first region 17, and the number of the second oblique portions 16B in the second region 18. The number of portions 16B is configured to be greater than the number of first oblique portions 16A (first embodiment). In FIG. 4 , only the first oblique portion 16A is provided as the oblique portion 16 in the first region 17, and only the second oblique portion 16B is provided as the oblique portion 16 in the second region 18. However, the first region 17 may be provided with the second diagonal portions 16B in a number smaller than the number of the first diagonal portions 16A, and the second region 18 may be provided with the second diagonal portions 16B. 16 A of the 1st skew parts of a number smaller than the number of may be provided.

A single target tape 11 may be divided into a plurality of areas, or a separate target tape 11 may be arranged for each area. For example, as one embodiment of the disposable diaper 1 of the present invention, the target tape 11 may have a first target tape as the first region 17 and a second target tape as the second region 18 . In this case, the first target tape is arranged on one side in the width direction x as the first area 17, and the second target tape is arranged on the other side in the width direction x as the second area 18. be able to. Since the first region 17 and the second region 18 can also be arranged so as to be spaced apart from each other with respect to the center line in the width direction x, the wearer and/or the caregiver may feel the wearer and/or the caregiver when wearing the diaper. There is also an advantage that it is easy to align the center of the width direction x with the center of the wearer's body.

By configuring the target tape 11 as described above, the hook member 37 of the fastening tape 31 can be easily engaged with the target tape 11 when the disposable diaper 1 is worn. Specifically, the tape-type disposable diaper 1 covers the iliac crest on the side of the wearer's pelvis in order to stably support the waist of the wearer when worn. It is preferably worn as In this case, the disposable diaper 1 is preferably worn around the waist of the wearer so as to cover the iliac crest of the wearer from above. When the disposable diaper 1 is worn in this manner, the fastening tape 31 is attached obliquely to the target tape 11 . That is, when the fastening tape 31 is attached to the target tape 11, the fastening tape 31 is arranged on the target tape 11 so as to extend from the outer side to the inner side in the width direction x from the upper side to the lower side of the wearer. becomes. In this case, when the first region 17 and the second region 18 are formed on the target tape 11 as described above, the hook member 37 of the fastening tape 31 is attached to the net structure 14 of the engaging layer 13 of the target tape 11 . , it becomes particularly easy to engage with the first oblique portion 16A or the second oblique portion 16B.

Specifically, when the disposable diaper 1 is worn, the first tab portion 33A of the first fastening tape 31A is engaged with at least the first region 17 of the target tape 11, and the second tab portion 33B of the second fastening tape 31B is engaged. is engaged with at least the second region 18 of the target tape 11, while the hook member 37 of the first fastening tape 31A engages the first oblique portion 16A of the engagement layer 13 of the first region 17 of the target tape 11. The hook member 37 of the second fastening tape 31B is easily engaged with the second oblique portion 16B of the engaging layer 13 of the second region 18 of the target tape 11. As shown in FIG. Therefore, even when the fastening tape 31 has only one knob portion 33, the fastening tape 31 is firmly attached to the target tape 11, and the disposable diaper 1 can be stably worn around the waist of the wearer.

In another embodiment of the disposable diaper 1 of the present invention, as shown in the drawings, the tab portion 33 of the fastening tape 31 is also configured to have two front tab portions 34 and rear tab portions 35 . It can be suitably applied to. When the disposable diaper 1 constructed in this manner is worn, the front side knob portion 34 and the rear side knob portion 35 arranged side by side in the front-rear direction y are superimposed so as to cross each other and fastened to the target tape 11.例文帳に追加, suitable for so-called cross fastening (see FIG. 11). When the fastening tape 31 is attached to the target tape 11 by cross fastening, the sides of the wearer's pelvis are easily supported by the disposable diaper 1 from above and below. Therefore, the fit of the disposable diaper 1 around the waist of the wearer and the fit near the roots of both legs are improved, and the disposable diaper 1 can be worn stably.

When the fastening tape 31 is fastened to the target tape 11 by cross fastening, the front side tab portion 34 is first fastened to the target tape 11, and then the rear side tab portion 35 is attached to the target tape so as to cross and overlap the front side tab portion 34. 11 is preferred. As a result, the disposable diaper 1 can be worn around the wearer's waist with good fit, and in particular, the fit near the base of both legs of the wearer can be improved, and urine and the like from the wearer's crotch can be prevented. Leakage can be effectively prevented. Moreover, wearing of the disposable diaper 1 by cross fastening is facilitated.

When the fastening tape 31 is attached to the target tape 11 as described above, the rear tab portion 35 is attached to the target tape 11 with the front tab portion 34 interposed therebetween. In addition, the rear side grip portion 35 is arranged on the target tape 11 so as to extend from the outer side to the inner side in the width direction x so as to extend from the upper side to the lower side of the wearer. Therefore, by forming the first region 17 and the second region 18 on the target tape 11 as described above, the hook member 37 of the rear side tab portion 35 is attached to the net structure 14 of the engagement layer 13 of the target tape 11 . On the other hand, it becomes easier to engage with the first oblique portion 16A or the second oblique portion 16B, and a stable engagement state can be maintained when the disposable diaper 1 is worn.

Specifically, the hook member 37 of the rear tab portion 35 of the first fastening tape 31A is easily engaged with the first oblique portion 16A of the engagement layer 13 of the first region 17 of the target tape 11, The hook member 37 of the rear side tab portion 35 of the two-fastening tape 31B is easily engaged with the second oblique portion 16B of the engaging layer 13 of the second region 18 of the target tape 11 . As a result, the fastening tape 31 can be stably attached to the target tape 11 by cross fastening.

In another embodiment, as shown in FIG. 5, the target tape 11 is divided into two regions in the width direction x and two regions in the front-back direction y. A first region 19 positioned on one side in the width direction x, a second region 20 positioned on the other side in the width direction x on the rear side in the front-rear direction y, and a front side in the front-back direction y. a third region 21 located on one side in the width direction x, and a fourth region 22 located on the other side in the width direction x on the front side in the front-rear direction y, the first region 19 and the fourth region 22, the number of first oblique portions 16A is greater than the number of second oblique portions 16B, and in the second region 20 and the third region 21, the number of second oblique portions 16B is greater than the number of first oblique portions 16A. It may be configured to be more than (second embodiment). The first region 19 and the second region 20 are positioned below the third region 21 and the fourth region 22 when the wearer is standing with the disposable diaper 1 on. In this case, in the target tape 11 of the second embodiment, the first area 19 and the second area 20 correspond to the first area 17 and the second area 18 of the target tape 11 of the above-described first embodiment. A third region 21 and a fourth region 22 are formed in front of the first region 17 and the second region 18 in the front-rear direction y. Note that in FIG. 5 , only the first oblique portion 16A is provided as the oblique portion 16 in the first region 19 and the fourth region 22, and the second and third regions 20 and 21 are provided as the oblique portion 16. Although only the second oblique portion 16B is provided, even if the number of second oblique portions 16B smaller than the number of first oblique portions 16A is provided in the first region 19 and the fourth region 22, The second area 20 and the third area 21 may be provided with the first oblique portions 16A in a number smaller than the number of the second oblique portions 16B.

When the target tape 11 is configured as described above and two knob portions 33 of the fastening tape 31 are provided side by side in the front-rear direction y, the target tape 11 can be stably fastened by cross fastening. When the fastening tape 31 is attached to the target tape 11 configured in this way by cross fastening as shown in FIG. Preferably, the hook member 37 of the front tab portion 34 of the second fastening tape 31B is attached to the third region 21 of the tape 11 and at least the tip portion thereof is attached to the fourth region 22 of the target tape 11 . As in the fastening tape 31 shown in the drawings, when the front side tab portion 34 is provided with the outer hook member 37O and the inner hook member 37I as the hook members 37, at least the outer hook member 37O is located in the third region of the target tape 11. 21 or the fourth region 22 is preferred. When the two tabs 33 provided side by side in the front-rear direction y of the fastening tape 31 are cross-fastened to the target tape 11, the front tabs 34 extend from the outside to the inside in the width direction x on the target tape 11. It will be arranged so that it may go upwards from the wearer's lower part. Therefore, by forming the third region 21 and the fourth region 22 on the target tape 11 as described above, the hook member 37 of the front side tab portion 34 can be attached to the mesh structure 14 of the engaging layer 13 of the target tape 11 . , it becomes easier to engage with the first oblique portion 16A or the second oblique portion 16B.

Specifically, the hook member 37 of the front side tab portion 34 of the first fastening tape 31A becomes easier to engage with the second oblique portion 16B of the engagement layer 13 of the third region 21 of the target tape 11, and the second The hook member 37 of the front side tab portion 34 of the fastening tape 31B is easily engaged with the first oblique portion 16A of the engagement layer 13 of the fourth region 22 of the target tape 11 . As a result, when the front tab portion 34 is attached to the target tape 11, the front tab portion 34 is less likely to come off from the target tape 11 from the leading end side.

As for the rear side tab portion 35, at least the tip portion of the hook member 37 of the rear side tab portion 35 of the first fastening tape 31A is fixed to the first region 19 of the target tape 11, and the rear side of the second fastening tape 31B is attached. At least the tip portion of the hook member 37 of the grip portion 35 is preferably fixed to the second region 20 of the target tape 11 . When the outer hook member 37O and the inner hook member 37I are provided as the hook members 37 in the rear side tab portion 35 as in the fastening tape 31 shown in the drawings, at least the outer hook member 37O is the first hook member of the target tape 11. It is preferably attached to region 19 or second region 20 . When the fastening tape 31 is cross-fastened to the target tape 11, the rear side tab portion 35 is arranged on the target tape 11 so as to extend from the outer side to the inner side in the width direction x from the upper side to the lower side of the wearer. It will happen. Therefore, by forming the first region 19 and the second region 20 on the target tape 11 as described above, the hook member 37 of the rear side tab portion 35 is attached to the mesh structure 14 of the engaging layer 13 of the target tape 11 . On the other hand, it becomes easier to engage with the first oblique portion 16A or the second oblique portion 16B.

Specifically, the hook member 37 of the rear side tab portion 35 of the first fastening tape 31A is easily engaged with the first oblique portion 16A of the engagement layer 13 of the first region 19 of the target tape 11, The hook member 37 of the rear side tab portion 35 of the two-fastening tape 31B is easily engaged with the second oblique portion 16B of the engaging layer 13 of the second region 20 of the target tape 11 . As a result, when the disposable diaper 1 is worn with the rear tab portion 35 attached to the target tape 11, the rear tab portion 35 is less likely to come off the target tape 11 from the tip side.

Therefore, as shown in FIG. 5, the target tape 11 is divided into four areas, a first area 19, a second area 20, a third area 21 and a fourth area 22, in the width direction x and the front-rear direction y. In the region 19 and the fourth region 22, the number of the first oblique portions 16A is greater than the number of the second oblique portions 16B, and in the second region 20 and the third region 21, the number of the second oblique portions 16B is the first. The fastening tape 31 can be stably fastened to the target tape 11 by cross fastening by configuring the number of the fastening tapes 31 to be greater than the number of the oblique portions 16A.

When a plurality of regions are formed on the target tape 11 as described above, each region may be composed of a common base layer 12 or may be composed of separate base layers 12, and each region may be composed of a common base layer 12. , or separate engaging layers 13 . The target tape 11 may be divided corresponding to each area.

In the target tape 11 of the first embodiment, the first region 17 and the second region 18 are preferably separated by a centerline in the width direction x (that is, a centerline extending in the front-rear direction y). Similarly, in the target tape 11 of the second embodiment, the first region 19 and the second region 20 are preferably divided by the center line in the width direction x, and the third region 21 and the fourth region 22 are divided in the width direction x. (that is, the center line extending in the front-rear direction y). As a result, the fastening tape 31 can be stably attached to the target tape 11 more reliably.

In the first areas 17, 19 and the fourth area 22, if the number of the first oblique parts 16A is greater than the number of the second oblique parts 16B, the first oblique parts 16A and the second oblique parts Both portions 16B may be present. In these regions, the number of first oblique portions 16A is preferably 1.25 times or more, more preferably 1.5 times or more, and even more preferably twice or more the number of second oblique portions 16B. The second oblique portion 16B may not exist in the first regions 17 and 19 and the fourth region 22 .

In the second regions 18, 20 and the third region 21, if the number of the second oblique portions 16B is greater than the number of the first oblique portions 16A, the first oblique portions 16A and the second oblique portions Both portions 16B may be present. In these regions, the number of second oblique portions 16B is preferably 1.25 times or more, more preferably 1.5 times or more, and even more preferably twice or more the number of first oblique portions 16A. The first oblique portion 16A may not exist in the second regions 18 and 20 and the third region 21 .

In the embodiment of the present invention, it is preferable that the thread forming the oblique portion 16 obliquely connects two grid points and extends loosely rather than straightly between the two grid points. This makes it easier for the hook member 37 to engage with the oblique portion 16 . For example, it is preferable that the thread forming the oblique portion 16 extends between two grid points with more slack than the thread forming the grid portion 15 . Specifically, the length of the path connecting two grid points of the thread forming the oblique portion 16 is L1, the length of the line connecting the two grid points is L2, and the thread forming the grid portion 15 It is preferable that the value of L1/L2 is larger than the value of L3/L4, where L3 is the length of the line connecting two grid points, and L4 is the length of the straight line connecting the two grid points. .

When a straight line connects two lattice points that are diagonally connected by the thread forming the oblique portion 16, the angle of the straight line is 10 degrees clockwise or counterclockwise with respect to the straight line extending in the width direction x. ° or more, more preferably 20° or more, preferably 80° or less, and more preferably 70° or less.

It is preferable that the two lattice points obliquely connected by the yarn in the first oblique portion 16A are two square lattice points adjacent to each other. It is preferable that the two lattice points obliquely connected by the yarn in the second oblique portion 16B are two square lattice points adjacent to each other. This makes it easier for the hook member 37 to engage with the first oblique portion 16A or the second oblique portion 16B.

When the fastening tape 31 has the front side tab portion 34 and the rear side tab portion 35 like the disposable diaper 1 shown in the drawings, at least the hook members 37 provided on the rear side tab portion 35 are arranged so that the engaging elements 39 They are preferably arranged side by side in the direction y. As explained above, the fastening tape 31 having the front tab portion 34 and the rear tab portion 35 is suitable for cross fastening, and in particular, the front tab portion 34 is fastened to the target tape 11 as shown in FIG. After wearing, the rear side knob portion 35 is fixed to the target tape 11 so as to be crossed and overlapped with the front side knob portion 34, so that the fit around the base of both legs of the wearer can be improved. leakage of urine or the like from the crotch can be effectively prevented.

Further, in order to increase the engagement force between the hook member 37 of the rear side knob portion 35 and the target tape 11, the hook member 37 provided on the rear side knob portion 35 has the engaging elements 39 arranged side by side in the front-rear direction y. preferably. By configuring the hook member 37 of the rear side knob portion 35 in this way, the rear side knob portion 35 can be attached to the target tape 11 more stably. Specifically, the hook member 37 of the rear tab portion 35 of the first fastening tape 31A is engaged by the first oblique portion 16A of the engagement layer 13 of the first region 17 or the first region 19 of the target tape 11. The hook member 37 of the rear tab portion 35 of the second fastening tape 31B is engaged by the second oblique portion 16B of the engaging layer 13 of the second region 18 or the second region 20 of the target tape 11. It becomes easy to wear, and the feeling of fitting when the disposable diaper 1 is worn is easily maintained. As for the fastening tape 31, the hook member 37 provided on the front side knob portion 34 is preferably arranged so that the engaging elements 39 are arranged side by side in the front-rear direction y.

When the rear side knob portion 35 is overlapped on the front side knob portion 34 and cross-fastened, the rear side knob portion 35 can be stably attached to the target tape 11. It is preferable that the side knob portion 35 is provided with an outer hook member 37O and an inner hook member 37I as the hook members 37. As shown in FIG. In this case, the portion between the outer hook member 37O and the inner hook member 37I of the rear side hook portion 35 is overlapped so as to cross the front side hook portion 34, and the outer hook member 37O and the inner hook member 37I are fixed to the target tape 11. By doing so, the rear side knob portion 35 can be stably attached to the target tape 11 .

When the fastening tape 31 is cross-fastened as described above, the outer hook member 37O and the inner hook member 37I straddle the tape base material 36 of the front tab portion 34 and the target tape 11 which are crossed and overlapped. preferably worn. As a result, the rear side knob portion 35 can be stably overlapped on the front side knob portion 34 and cross-fastened.

9, the outer hook member 37O of the rear side knob portion 35 is positioned at the inner edge in the width direction x, as shown in FIG. The height of the engaging element 39 provided in the region 40 along the width direction x is higher than the height of the engaging element 39 provided in the outer region in the width direction x, and the inner side of the rear side knob portion 35 In the hook member 37I, the height of the engaging element 39 provided in the region 41 along the outer edge in the width direction x is higher than that of the engaging element 39 provided in the region inward in the width direction x. It is preferably formed higher than the height. By forming each hook member 37 in this manner, the rear side grip portion 35 can be easily engaged with the front side grip portion 34, and can be stably fastened. , the fastening tape 31 can be stably cross-fixed on the target tape 11. - 特許庁Note that the hook member 37 of the front side knob portion 34 may also be configured in this manner.

As shown in FIG. 10, in the rear side knob portion 35, the outer hook member 37O has a top portion of the engaging element 39 provided in the region 40 along the inner edge in the width direction x. The size of the top of the engaging element 39 provided in the outer region in the width direction x is larger than the size of the top of the engaging element 39, and the inner hook member 37I is arranged in the engaging element 39 provided in the region 41 along the outer edge in the width direction x. is formed larger than the size of the top of the engaging element 39 provided in the inner region in the width direction x. Even when each hook member 37 is formed in this manner, the rear side grip portion 35 can be easily engaged with the front side grip portion 34, and can be stably fastened. , the fastening tape 31 can be stably cross-fixed on the target tape 11. - 特許庁Note that the hook member 37 of the front side knob portion 34 may also be configured in this manner.

1: Disposable Diaper 2: Diaper Body 3: Top Sheet 4: Back Sheet 5: Absorbent Body 6: Side Sheet 7: Standing Flap 8: Standing Elastic Member 9: Leg Elastic Member 10: Waist Elastic Member 11: Target Tape 12: Base layer 13: Engagement layer 14: Net structure 15: Lattice part 16: Oblique part, 16A: First oblique part, 16B: Second oblique part 17, 19: First region 18, 20: Second 2 area 21: third area 22: fourth area 31: fastening tape, 31A: first fastening tape, 31B: second fastening tape 32: tape body, 32A: first tape body, 32B: second tape body Part 33: Knob part 33A: First knob part 33B: Second knob part 34: Front side knob part 35: Rear side knob part 36: Tape substrate 37: Hook member 37O: Outer hook member 37I: Inner hook Member 38: Base 39: Engaging element

Claims (9)

A tape-type disposable diaper having a width direction and a front-rear direction and having fastening tapes on both sides of the diaper body in the width direction,
The fastening tape is provided with a hook member of a hook-and-loop fastener,
A target tape to which the hook member of the fastening tape is engaged when the diaper is worn is provided on the outer surface side of the diaper main body,
The target tape has a base layer and an engagement layer provided on the outer surface side of the base layer and having a net structure formed by threads,
The net structure includes a lattice portion in which the yarns are arranged in a square lattice, and a diagonal portion in which the yarns are arranged so as to obliquely connect at least two lattice points of the square lattice,
The target tape has two regions in the width direction, a first region located on one side in the width direction and a second region located on the other side in the width direction,
Among the oblique portions, the yarn is arranged so as to obliquely connect two lattice points from one side to the other side in the width direction from the rear side to the front side in the front-rear direction. A row portion is defined as a second oblique portion in which the yarn is arranged so as to obliquely connect two grid points from the other side to the one side in the width direction from the rear side to the front side in the front-rear direction. Then, in the first area, the number of the first oblique lines is greater than the number of the second oblique lines, and in the second area, the number of the second oblique lines is greater than the number of the first oblique lines. Disposable diapers characterized by being more than the number. The target tape further has a third region and a fourth region, which are two regions in the front-rear direction, and the third region is located on the rear side in the front-rear direction and on one side in the width direction. 1 area, the second area located on the other side in the width direction on the rear side in the front-rear direction, and the third area located on the front side in the front-rear direction and on one side in the width direction. , the fourth region located on the front side in the front-rear direction and on the other side in the width direction,
In the fourth area, the number of the first oblique lines is greater than the number of the second oblique lines, and in the third area, the number of the second oblique lines is greater than the number of the first oblique lines. The disposable diaper according to claim 1. The fastening tapes arranged on both sides in the width direction of the diaper main body include a first tape main body portion attached to one side of both sides in the width direction of the diaper main body, and at least from the first tape main body portion in the width direction. a first fastening tape having a first tab portion extending on one side of the diaper body, a second tape body portion attached to the other side of both sides in the width direction of the diaper body, and at least from the second tape body portion 3. The disposable diaper according to claim 1, further comprising a second fastening tape having a second tab extending on the other side in the width direction. The first tab portion has a front side tab portion and a rear side tab portion that extend in the width direction from the first tape main body portion and are spaced apart in the front-rear direction, and the second tab portion includes: a front side knob portion and a rear side knob portion extending in the width direction from the second tape main body portion and spaced apart in the front-rear direction; the hook member is provided,
the hook member has a base and a plurality of engaging elements protruding from the base;
4. The disposable diaper according to claim 3, wherein the engaging elements of at least the hook member provided on the rear side grip portion are arranged side by side in the front-rear direction. In the rear side knob portion, as the hook members, an outer hook member and an inner hook member separated from the outer hook member in the width direction and provided inward of the outer hook member in the width direction. is provided,
In the outer hook member, the height of the engaging element provided in the region along the inner edge in the width direction is higher than that of the engaging element provided in the region outward in the width direction. higher than height
In the inner hook member, the height of the engaging element provided in the region along the outer edge in the width direction is higher than that of the engaging element provided in the region inward in the width direction. 5. A disposable diaper according to claim 4, which is taller than it is tall. In the rear side knob portion, as the hook members, an outer hook member and an inner hook member separated from the outer hook member in the width direction and provided inward of the outer hook member in the width direction. is provided,
In the outer hook member, the size of the top of the engaging element provided in the region along the inner edge in the width direction is larger than that of the engagement element provided in the region outside in the width direction. larger than the size of the top of the element,
In the inner hook member, the size of the top of the engaging element provided in the region along the outer edge in the width direction is the engagement provided in the region inward in the width direction. 6. A disposable diaper according to claim 4 or 5, which is larger than the size of the top of the element. When wearing the diaper, the first tab portion of the first fastening tape is engaged with at least the first region, and the second tab portion of the second fastening tape is engaged with at least the second region. A disposable diaper according to any one of claims 3 to 6, configured to be The two lattice points obliquely connected by the yarn in the first oblique portion are two adjacent rectangular lattice points, and the yarn in the second oblique portion. 8. The disposable diaper according to any one of claims 1 to 7, wherein the two lattice points obliquely connected by are two square lattice points adjacent to each other. The target tape has a first target tape and a second target tape, the first target tape as the first region is positioned on the one side in the width direction, and the second target tape is positioned as the second region. The disposable diaper according to any one of claims 1 to 8, which is positioned on the other side in the width direction.

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