JP7058307B2 - Disposable diapers - Google Patents

Description

The present invention relates to a disposable diaper provided with a fastening tape.

Conventionally, so-called tape-type disposable diapers equipped with a fastening tape are widely known. Hook-and-loop fastener hook members are often provided on the fastening tape, and the fastening tape is provided on both sides of the rear side of the disposable diaper in the width direction, and the hook members of the fastening tape are provided on the front side of the disposable diaper when worn. Disposable diapers can be worn around the wearer's waist by engaging with the fastening-compatible portion. The fastening tape provided with the hook member has increased rigidity at the portion where the hook member is provided, and when the disposable diaper is worn, it has the ability to follow the curved surface shape of the wearer's body surface and the wearer's movement. May decrease. In response to such a decrease in followability due to the rigidity of the hook member, Patent Documents 1 and 2 disclose a fastening tape in which a slit is formed in the hook member.

Japanese Unexamined Patent Publication No. 2014-155598 Japanese Patent Publication No. 2008-522730

According to the fastening tape disclosed in Patent Documents 1 and 2, it is possible to improve the followability to the curved surface shape of the wearer's body surface by forming a slit in the hook member, but it is possible to improve the followability of the wearer's waist circumference. It is desirable to have a fastening tape that fits well and can be fastened stably. The present invention has been made in view of the above circumstances, and an object thereof is a disposable diaper provided with a fastening tape provided with a hook member, which fits comfortably around the wearer's waist and is stably fastened. Is to provide disposable diapers that can be used.

The disposable diaper of the present invention that has been able to solve the above problems is a disposable diaper that has a width direction and a front-back direction and is provided with fastening tapes on both sides of the diaper body in the width direction. Has a tape base material, a first hook member and a second hook member provided on the tape base material, and the second hook member is separated from the first hook member in the width direction from the first hook member. The first hook member and the second hook member have a base and a plurality of engaging elements protruding from the base, and the first hook member and the second hook member are provided on the inner side in the width direction. It is characterized in that a first cut line and / or a recess line extending in the front-rear direction is formed.

In the disposable diaper of the present invention, since the fastening tape is provided with the first hook member and the second hook member separated in the width direction, the first hook member and the second hook member are used to form the entire fastening tape. Can be placed around the wearer's waist with good fit. At this time, the fastening tape can be arranged so as to be in close contact with the wearer's waist at the portion between the first hook member and the second hook member, and the first hook member and the second hook. Even in the portion where the member is provided, the first cut line and / or the recess line extending in the front-rear direction is formed on the base of the first hook member and the second hook member, so that the portion is easily bent in the width direction. Therefore, the fastening tape improves the fit along the circumferential direction of the wearer's waist even in the portion where the first hook member and the second hook member are provided, and improves the followability to the curved surface shape of the wearer's body surface. Can be enhanced. Further, even if a force for peeling off in the width direction acts on the first hook member and the second hook member, the first hook member and the second hook member are less likely to be peeled off from the fastening corresponding portion at once, and the first hook member. And the second hook member can be stably fastened to the fastening corresponding portion. Therefore, the fastening tape can be stably fastened to the wearer's waist with good fit.

The first hook member and the second hook member are divided into a plurality of regions in the width direction by the first notch line and / or the recess line, and the region on the inner side in the width direction of the first hook member is the first hook. The length in the width direction is formed longer than the region on the outer side in the width direction of the member, and the region on the inner side in the width direction of the second hook member is the region on the outer side in the width direction of the second hook member. It is preferable that the length in the width direction is shorter than that of the above. By forming the fastening tape in this way, the fastening tape can be stably fastened to the fastening corresponding portion of the disposable diaper, and the force of peeling from the tip side or the root side of the fastening tape. Even if the diaper acts, the first hook member and the second hook member are less likely to be unintentionally peeled off from the fastening corresponding portion. Further, when the fastening tape is fastened to the fastening corresponding portion, it becomes easy to finely adjust the fastening position of the first hook member in the region on the outer side in the width direction of the first hook member, and the second hook member is second. It becomes easy to finely adjust the fastening position of the second hook member in the region on the inner side in the width direction of the hook member.

The first hook member and the second hook member may have a second cut line and / or a recess line extending obliquely in the front-rear direction formed on the base material. If the first hook member and the second hook member are formed in this way, the first hook member and the second hook member are likely to bend not only in the width direction but also in the diagonal direction thereof. Further, even if a force for peeling from the width direction or the diagonal direction thereof acts on the first hook member and the second hook member, the first hook member and the second hook member are less likely to be peeled from the fastening corresponding portion at one time. Therefore, when the wearer twists his / her waist diagonally or gets up from the lateral decubitus position while wearing the disposable diaper, the first hook member and the second hook member are stably fixed to the fastening corresponding portion. , It is possible to improve the followability of the wearer to various movements. In this case, as a second notch line and / or indentation line, the substrate is provided with a notch line and / or indentation line extending diagonally in the anteroposterior direction at an angle of 15 ° or more and 75 ° or less in the anteroposterior direction. On the other hand, it is preferable that a notch line and / or a recess line extending diagonally at an angle of 15 ° or more and 75 ° or less is formed counterclockwise.

The first hook member and the second hook member may have a third cut line and / or a recess line extending in the width direction formed on the substrate. If the first hook member and the second hook member are formed in this way, the first hook member and the second hook member are likely to bend not only in the width direction but also in the front-rear direction. Further, even if a force for peeling from the width direction or the front-rear direction acts on the first hook member and the second hook member, the first hook member and the second hook member are less likely to be peeled from the fastening corresponding portion at one time. Therefore, when the wearer takes a leaning posture or applies force to the abdomen while wearing the disposable diaper, the first hook member and the second hook member are stably fastened to the fastening corresponding portion. It is possible to improve the followability of the wearer to various movements.

In the first hook member and the second hook member, the base material is adhered to the tape base material at the adhesive portion, and the adhesive portion is not provided at the position where the first hook line or the recess line overlaps, and the non-adhesive portion is formed. Is preferable. Since the adhesive portion is not provided at a position overlapping the first cut line or the recessed line, the fastening tape is the first in a state where the first hook member and the second hook member are fastened to the fastening corresponding portion. Increases the degree of freedom to bend at the notch line or dent line. Further, even if the fastening tape is bent at the first cut line or the recessed line, the bases of the first hook member and the second hook member are unintentionally from the fastening corresponding portion starting from the first cut line or the recessed line. It becomes difficult to peel off. Therefore, the fastening tape can be fastened to the fastening corresponding portion with good fit and stability.

It is preferable that the adhesive portion is not provided within a range of at least 0.3 mm from the position where it overlaps with the first cut line or the recess line. If the non-adhesive portion is formed at a position overlapping the first cut line or the recess line in this way, the fastening tape can be fastened to the fastening corresponding portion with better fit.

The base of the first hook member and the second hook member is adhered to the tape base material at the adhesive portion, and the adhesive portions are provided at both ends in the width direction of the first hook member and both ends in the width direction of the second hook member. It is preferable not to. As a result, when the first hook member and the second hook member are fastened to the fastening corresponding portion, even if a force that shifts in the width direction acts on the first hook member and the second hook member, the first hook member and the first hook member The base of the second hook member is less likely to come off starting from both ends. Therefore, the first hook member and the second hook member can be stably fastened to the fastening corresponding portion.

The first hook member is preferably provided at a distance in the width direction from the outer edge in the width direction of the tape base material. If the fastening tape is formed in this way, it becomes easier to pinch the tip of the fastening tape. In this case, the length from the outer edge in the width direction of the first hook member to the outer edge in the width direction of the tape base material is the length from the outer edge in the width direction of the first hook member to the first cut line and /. Alternatively, it is preferably formed longer than the length to the recess line. As a result, even if the tip of the fastening tape bends along the outer edge of the first hook member in the width direction and accidentally fastens to the first hook member, the first hook member can be attached to the first cut line and / or By bending along the recessed line, the tip end portion of the fastening tape can be easily peeled off from the first hook member.

When the disposable diaper of the present invention is worn, the fastening tape can be stably fastened to the wearer's waist with good fit.

An example of the disposable diaper of the present invention is shown, and a plan view of the disposable diaper as viewed from the skin surface side is shown. The II-II sectional view of the disposable diaper shown in FIG. 1 is shown. The enlarged plan view of the adhesive tape provided in the disposable diaper shown in FIG. 1 is shown. The IV-IV sectional view of the disposable diaper shown in FIG. 1 is shown. A modified example of the fastening tape shown in FIG. 3 is shown. A modified example of the fastening tape shown in FIG. 3 is shown. An example of forming an adhesive portion between the first hook member or the second hook member and the tape base material in the fastening tape shown in FIG. 5 is shown.

The present invention relates to a so-called tape-type disposable diaper provided with a fastening tape provided with a hook member. The hook member is a kind of hook-and-loop fastener, and the hook-and-loop fastener is known by trade names such as "Magic Tape" (registered trademark), "Velcro" (registered trademark), and "Quicklon" (registered trademark). The hook member is configured such that a plurality of engaging elements project from the base, and is usually used as a pair with the loop member, and is detachably attached to the loop member or functions as a loop member. It is detachably attached to a material (for example, a cloth material such as a non-woven fabric, a woven cloth, or a knitted cloth).

Tape-type disposable diapers are usually provided with fastening tapes with hook members on both sides of the rear side of the disposable diaper in the width direction, and the hook members of the fastening tape are fastened to the front side of the disposable diaper when worn. By fastening to the corresponding portion, the disposable diaper can be worn around the wearer's waist. The hook member (particularly the base) is made of a resin molded body or the like, and has a relatively higher rigidity than other members constituting the disposable diaper. Therefore, in a tape-type disposable diaper, when it is worn around the wearer's waist, the followability to the curved surface shape of the wearer's body surface is reduced at the portion where the hook member is provided, and the wearer tends to feel uncomfortable. .. The disposable diaper of the present invention is provided with a fastening tape provided with a hook member in this way, and the portion provided with the hook member can enhance the followability to the curved surface shape of the wearer's body surface. Moreover, the fastening tape can be stably fastened to the fastening corresponding portion of the disposable diaper. Hereinafter, the disposable diaper of the present invention will be described in detail with reference to the drawings. The present invention is not limited to the embodiments shown in the drawings.

1 to 4 show an example of the disposable diaper of the present invention. FIG. 1 shows a plan view of a disposable diaper as viewed from the skin side, FIG. 2 shows a sectional view taken along line II-II of the disposable diaper shown in FIG. 1, and FIG. 3 shows a disposable diaper shown in FIG. An enlarged plan view of the provided fastening tape is shown, and FIG. 4 shows an IV-IV cross-sectional view of the disposable diaper shown in FIG. In FIG. 1, 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. In the figure of the present application, the arrow x represents the width direction, the arrow y represents the front-back direction, and the direction perpendicular to the surface formed by the arrows x, y represents the thickness direction z.

The disposable diaper 1 has a diaper main body 2 and fastening tapes 11 provided on both sides of the diaper main body 2 in the width direction x. The diaper body 2 has a front side portion, a rear side portion, and a crotch portion located between them, and fastening tapes 11 are attached to both sides of the rear side portion of the diaper body 2. When wearing the disposable diaper 1, the front side is applied to the wearer's abdomen, the crotch is applied to the wearer's crotch, the posterior side is applied to the wearer's back, and the fastening tape 11 is applied to the front side of the diaper body 2. By fixing to, it is formed into a pants shape and used. For example, the disposable diaper 1 can be worn by providing the fastening corresponding portion 24 on the outer surface of the front side portion of the diaper main body 2 and fastening the fastening tape 11 to the fastening corresponding portion 24.

The disposable diaper 1 has a front-back direction y and a width direction x. The front-back direction y and the width direction x are defined in a state where the disposable diaper 1 is spread out in a plane. The front-back direction y corresponds to the direction extending in the front-back direction of the wearer's crotch when wearing a disposable diaper. The width direction x means a direction that is on the same surface as the disposable diaper and is orthogonal to the front-back direction y, and corresponds to the left-right direction of the wearer when the disposable diaper is worn. Further, 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 outside of the disposable diaper means the wearer when wearing the disposable diaper. It means the opposite side.

The diaper body 2 is configured, for example, with an absorber 5 arranged between the top sheet 3 and the back sheet 4. The top sheet 3 is a sheet located on the wearer side when the disposable diaper is worn, and the back sheet 4 is a sheet located on the opposite side of the wearer, that is, on the outside when the disposable diaper is worn. The urine or the like excreted from the wearer passes through the top sheet 3 and is stored in the absorber 5. The back sheet 4 prevents excrement from leaking to the outside.

The top sheet 3 is preferably liquid permeable, and is preferably a non-woven fabric formed of hydrophilic fibers such as cellulose, rayon, and cotton, and a polyolefin (for example, polypropylene, polyethylene), polyester (for example, PET), and polyamide (for example). For example, a non-woven fabric formed of hydrophobic fibers such as nylon), in which the surface of the hydrophobic fibers is hydrophilized by a surfactant, or the like can be used. Further, as the top sheet 3, a woven fabric, a knitted fabric, a perforated resin film or the like may be used.

The backsheet 4 is preferably liquid-impermeable, and is a non-woven fabric or resin film formed of hydrophobic fibers such as polyolefin (for example, polypropylene, polyethylene), polyester (for example, PET), and polyamide (for example, nylon). Etc. can be used. Further, as the back sheet 4, a laminated body of a non-woven fabric and a film may be used.

The absorber 5 is not particularly limited as long as it contains an absorbent material capable of absorbing excrement such as urine. As the absorber 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 tissue paper) or a liquid-permeable non-woven fabric. Things can be used. Examples of the absorbent material include hydrophilic fibers such as pulp fibers and water-absorbent resins such as polyacrylic acid-based, polyaspartic acid-based, cellulosic-based, and starch / acrylonitrile-based. Further, the water-absorbent material may include polyolefin fibers such as polyethylene and polypropylene, polyester fibers such as PET, and heat-weldable fibers such as polyamide fibers. These heat-weldable fibers may be hydrophilized with a surfactant or the like in order to enhance the affinity with urine or the like.

The absorbent material preferably contains hydrophilic fibers from the viewpoint of increasing the absorption rate of urine and the like. Further, from the viewpoint of increasing the absorption capacity, the absorbent material preferably contains a water-absorbent resin. Therefore, it is preferable that the absorber contains hydrophilic fibers (particularly pulp fibers) and a water-absorbent resin. In this case, for example, it is preferable to use an aggregate of hydrophilic fibers mixed or sprayed with a water-absorbent resin.

The absorber 5 may be a sheet-shaped absorber. Examples of the sheet-like absorber include those formed so as to have a water-absorbent resin between the nonwoven fabrics and not to have pulp fibers. Since the sheet-shaped absorber thus formed has a water-absorbent resin between the nonwoven fabrics, a high absorption capacity can be realized. Further, since the sheet-shaped absorber does not have pulp fibers between the non-woven 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 depending on the intended use, and examples thereof include a rectangle, an hourglass shape, a gourd shape, and a battledore shape. It should be noted that the absorber or the molded body constituting the absorber is formed in an hourglass shape from the viewpoint that the absorber is sandwiched between the thighs of the wearer and is not easily distorted even when pressed in the width direction x. Is preferable.

It is preferable that the diaper main body 2 is joined with side sheets 6 extending outward in the width direction x from the top sheet 3 on both sides of the top sheet 3 in the width direction x. The side sheet 6 is preferably liquid impermeable and can be made of a sheet material that can be used for the back sheet 4.

The side sheet 6 is joined to the top sheet 3 at the side joint portion 8, and an inner portion in the width direction x from the side joint portion 8 is formed so as to be able to stand up from the top sheet 3, and the width direction x from the side joint portion 8 is formed. The outer portion of the back sheet 4 is laminated (see FIG. 2). The inner portion of the side sheet 6 in the width direction x stands up to form a rising flap, which can prevent lateral leakage of urine or the like in the width direction x. Since the inner portion of the side sheet 6 in the width direction x is formed so as to be able to stand up from the top sheet 3, the side sheet 6 has a front-rear direction y in the inner portion of the width direction x than the side joint portion 8. It is preferable that the elastic member 7 for standing up is provided.

When a non-woven fabric is used as each of the above-described sheets, it is preferable to use a spunbonded non-woven fabric, an air-through non-woven fabric, a point-bonded non-woven fabric, a melt-blow non-woven fabric, an air-laid non-woven fabric, an SMS non-woven 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, preferably 40 g / m ² or less, and more preferably 30 g / m ² or less.

It is preferable that the diaper main body 2 is provided with elastic members 9 for legs extending in the front-rear direction y on both sides in the width direction x (see FIG. 1). By providing the elastic member 9 for the leg, gathers can be formed around the leg of the wearer to improve the fit around the leg and prevent lateral leakage.

The diaper body 2 may be provided with a waist elastic member 10 extending in the width direction x at the end portion in the front-rear direction y. The contraction force of the elastic member 10 for the waist forms waist gathers along the waist circumference of the wearer, and prevents excrement such as urine from leaking from the back side or the abdomen side.

As each elastic member described above, elastic elastic materials such as polyurethane threads, polyurethane films, and natural rubber, which are usually used for disposable diapers, can be used. The elastic member is preferably fixed with an adhesive such as a hot melt adhesive in a stretched state. For example, a polyurethane yarn having a fineness of 40 to 1,240 dtex is stretched to 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. The magnification is 1.0 times in the non-stretched state.

The fastening tape 11 has a tape base material 12, a first hook member 13 and a second hook member 14 provided on the tape base material 12. The shape of the fastening tape 11 is not particularly limited, and may be formed so as to extend outward in the width direction x from the side edge of the diaper body 2 in the width direction x. Although an enlarged plan view of the fastening tape is shown in FIG. 3, the fastening tape 11 shown in FIG. 3 has a fixing portion 21 attached to the diaper main body 2 and outward from the fixing portion 21 in the width direction x. It has an extending intermediate portion 22 and a knob portion 23 extending outward in the width direction x from the intermediate portion 22 and having a shorter length in the front-rear direction y than the intermediate portion 22. A first hook member 13 and a second hook member 14 are provided in the. The second hook member 14 is separated from the first hook member 13 in the width direction x, and is provided inside the first hook member 13 in the width direction x. In FIGS. 1 and 3, two knob portions 23 are provided side by side in the front-rear direction y, but the number of knob portions 23 may be one or three or more.

As the tape base material 12, a non-woven fabric, a woven fabric, a knitted fabric, a resin film, a laminate thereof, or the like can be used. The tape base material 12 is preferably made of a woven fabric, a knitted cloth, or a non-woven fabric, and is made of a non-woven fabric, from the viewpoint of ensuring the rigidity of the tape base material 12 and improving the handleability of the fastening tape 11. Is more preferable.

When a non-woven fabric is used for the tape base material 12, spunbonded non-woven fabric, air-through non-woven fabric, point-bonded non-woven fabric, melt-blow non-woven fabric, air-laid non-woven fabric, SMS non-woven fabric and the like can be used. Is preferable, and it is more preferable to use a spunbonded non-woven fabric. If such a non-woven fabric is used, it becomes easy to obtain a high-strength tape base material. Further, the nonwoven fabric used for the tape base material 12 is preferably embossed, which imparts appropriate rigidity to the tape base material 12 and improves the handleability of the fastening tape 11.

The mass per unit area of the tape base material 12 is preferably 50 g / m ² or more, more preferably 55 g / m ² or more, more preferably 120 g / m ² or less, and even more preferably 100 g / m ² or less. When the mass per unit area of the tape base material 12 is 50 g / m ² or more, the tape base material 12 has sufficient rigidity, and the mass per unit area of the tape base material 12 is 120 g / m ² or less. If this is the case, the tape base material 12 does not become too thick and the handleability is improved.

As shown in FIG. 4, the first hook member 13 and the second hook member 14 have a base 15 and a plurality of engaging elements 16 projecting from the base 15, and the base 15 is provided with the engaging element 16. The surface opposite to the surface to be bonded is adhered to the tape base material 12 by the adhesive portion 20. The shape of the engaging element 16 is not particularly limited, and examples thereof include a hook shape, an anchor shape, a mushroom shape, and a pillar shape. The hook member 13 is formed to be detachably attached to the front side portion (specifically, the fastening corresponding portion 24) of the diaper body 2.

As the fastening corresponding portion 24, a loop member of a hook-and-loop fastener is used, or the outer surface of the front side portion of the diaper body 2 is made of a material (for example, non-woven fabric, woven fabric, knitted fabric, etc.) that functions as a loop member. Can be a fastening corresponding portion 24. The disposable diaper 1 forms the disposable diaper 1 in the shape of pants by engaging the engaging element 16 of the hook member 13 provided on the fastening tape 11 with the fastening corresponding portion 24 on the front side of the diaper body 2. Can be worn.

As shown in FIGS. 3 and 4, the first hook member 13 and the second hook member 14 have a first cut line and / or a recess line 17 extending in the front-rear direction y formed on the base 15. Note that FIG. 4 shows an example in which a cut line is formed on the base 15. In the fastening tape 11, the first hook member 13 and the second hook member 14 are provided so as to be separated from each other in the width direction x, and the first hook member 13 and the second hook member 14 are respectively provided in the front-rear direction y. Since the extending first notch line and / or recess line 17 is formed, when the disposable diaper 1 is worn, the fastening tape 11 can be stably fastened to the wearer's waist with good fit. .. Explaining this in detail, the fastening tape 11 has the first hook member 13 and the second hook member 14 provided apart from each other in the width direction x, so that the entire fastening tape 11 can be fitted around the wearer's waist. Can be placed well. At this time, the fastening tape 11 is arranged so as to be in close contact with the wearer's waist at a portion between the first hook member 13 and the second hook member 14 (that is, a portion where the hook member is not provided). be able to. On the other hand, the fastening tape 11 is bent in the width direction x by the first notch line and / or the recess line 17 extending in the front-rear direction y even in the portion where the first hook member 13 and the second hook member 14 are provided. It will be easier. Therefore, the fastening tape 11 has an improved fit along the circumferential direction of the wearer's waist even in the portion where the first hook member 13 and the second hook member 14 are provided, and the fit is improved with respect to the curved surface shape of the wearer's body surface. Followability can be improved. Further, even if a force for peeling off in the width direction x acts on the first hook member 13 and the second hook member 14, the first hook member 13 and the second hook member 14 are unlikely to be peeled off from the fastening corresponding portion 24 at once. Therefore, the first hook member 13 and the second hook member 14 can be stably fastened to the fastening corresponding portion 24. The first hook member 13 and the second hook member 14 also finely adjust the fastening position by the first notch line and / or the recessed line 17 when the fastening tape 11 is fastened to the fastening corresponding portion 24. Will be easier. Therefore, the fastening tape 11 can be stably fastened to the wearer's waist with good fit.

The first cut line and / or the recess line 17 is formed so as to extend linearly from the base 15 of the first and second hook members 13 and 14 in a plan view. The cut line is formed so as to penetrate the base 15 in the thickness direction z, and the recess line does not penetrate the base 15 in the thickness direction z, and the surface on which the engaging element 16 is provided is recessed. When the cut line is formed on the base 15, one side and the other side of the base 15 sandwiching the cut line are arranged close to each other, and are arranged so as to be in contact with each other when, for example, the fastening tape 11 is bent. The separation distance between one side and the other side of the base 15 sandwiching the cut line is preferably 0.5 mm or less, more preferably 0.3 mm or less, still more preferably 0.1 mm or less. On the other hand, it is preferable that the tape base material 12 is not cut at a portion overlapping the first cut line or the recess line 17. The first cut line and / or the recessed line 17 is the base 15 of the first and second hook members 13, 14 after the first and second hook members 13, 14 are attached to the tape base material 12 by the adhesive portion 20. It can be easily formed by cutting or squeezing the base 15 by hitting the blade of a cutter against the surface. The same applies to the second cut line and / or the recess line 18 and the third cut line and / or the recess line 19, which will be described later.

It is preferable that a cut line is formed on the base 15 as a first cut line and / or a recess line 17. This increases the degree of freedom for the fastening tape 11 to bend at the notch line. In this case, both the cut line and the recess line may be formed on the base 15 as the first cut line and / or the recess line 17, but the total extension of the cut line is preferably the total length of the recess line. Formed longer than an extension. For example, the total length of the cut line is preferably 2 times or more, more preferably 3 times or more, still more preferably 5 times or more the total length of the recess line. It is particularly preferred that only the cut lines are formed on the substrate 15 as the first cut line and / or the recess line 17.

The shape and arrangement of the first hook member 13 and the second hook member 14 are not particularly limited. In FIGS. 1 and 3, the first hook member 13 and the second hook member 14 are formed in a substantially rectangular shape (substantially trapezoidal shape), but are formed in, for example, a circular shape, an elliptical shape, an arbitrary polygonal shape, an irregular shape, or the like. You may. The separation distance between the first hook member 13 and the second hook member 14 in the width direction x is preferably 5 mm or more, more preferably 8 mm or more, further preferably 10 mm or more, further preferably 100 mm or less, more preferably 80 mm or less, and 60 mm or less. Is even more preferable. The length x of the first hook member 13 and the second hook member 14 in the width direction is preferably 10 mm or more, more preferably 12 mm or more, further preferably 15 mm or more, further preferably 50 mm or less, more preferably 40 mm or less, and more preferably 35 mm. The following is more preferable.

The shape and arrangement of the first cut line and / or the recess line 17 are not particularly limited. In FIGS. 1 and 3, the first cut line and / or recess line 17 is a straight line extending in the front-rear direction y across the base 15 in the front-rear direction y, that is, back and forth from the front side edge to the rear side edge of the basement 15. Although it is formed in a straight line extending in the direction y, the first cut line and / or the recess line 17 may be formed in a curved shape extending in the front-back direction y, and only a part of the base 15 in the front-back direction y. It may be formed in. The first cut line and / or the recess line 17 should be formed so as to extend clockwise or counterclockwise at an angle of 10 ° or less (preferably an angle of 5 ° or less) with respect to the front-back direction y. In this case as well, it is assumed that the first cut line and / or the recess line 17 is formed so as to extend in the front-rear direction y. Only one first cut line and / or a recessed line 17 may be provided on the first hook member 13 or the second hook member 14, or a plurality of the first cut line and / or the recessed line 17 may be provided.

The first cut line and / or the recess line 17 is preferably formed in a straight line extending in the front-rear direction y. This makes it easier for the first hook member 13 and the second hook member 14 to smoothly bend in the width direction x at the first cut line and / or the recess line 17. The first cut line and / or recess line 17 is also preferably formed to extend from the anterior edge to the posterior edge of the substrate 15, so as to extend linearly from the anterior edge to the posterior edge of the substrate 15. It is more preferable that it is formed in. When the first cut line and / or the recessed line 17 is formed in this way, the first hook member 13 and the second hook member 14 are likely to bend in the width direction x along the circumferential direction of the wearer's waist. Become. Therefore, when the disposable diaper 1 is worn, the fit of the fastening tape 11 to the wearer's waist can be improved.

The first cut line and / or recess line 17 provided in the first hook member 13 or the second hook member 14 is preferably 4 or less, more preferably 3 or less, and further preferably 1 or 2. Preferably, the first hook member 13 and the second hook member 14 are stably adhered and fixed to the tape base material 12, and the first hook member 13 and the second hook member 14 are less likely to be peeled off from the tape base material 12. Become. The first cut line and / or recess line 17 may be formed so as to divide the first hook member 13 or the second hook member 14 into a plurality of regions having a length equal to the width direction x. It may be formed to be divided into a plurality of regions having different lengths.

As shown in FIGS. 3 and 4, the first hook member 13 is preferably provided so as to be separated from the outer edge (that is, the tip of the knob portion 23) in the width direction x of the tape base material 12 in the width direction x. .. If the fastening tape 11 is formed in this way, it becomes easy to pinch the tip portion of the knob portion 23. In this case, the first notch line and / or the recess line 17 is formed so as to extend linearly from the front side edge to the rear side edge of the base 15, and the fastening tape 11 is formed in the width direction x of the first hook member 13. The length from the outer edge of the tape base material 12 to the outer edge of the tape base material 12 in the width direction x is the length from the outer edge of the width direction x of the first hook member 13 to the first cut line and / or the recess line 17. It is preferably formed so as to be longer than the halfbeak. As a result, even if the tip of the knob portion 23 bends along the outer edge of the first hook member 13 in the width direction x and accidentally fastens to the first hook member 13, the first hook member 13 is cut into the first notch. By bending along the wire and / or the recessed wire 17, the tip portion of the knob portion 23 can be easily peeled off from the first hook member 13.

As shown in FIGS. 3 and 4, the first hook member 13 and the second hook member 14 are divided into a plurality of regions in the width direction x by the first cut line and / or the recess line 17, and the first hook The region on the inner side of the width direction x of the member 13 is formed so that the length of the width direction x is longer than the region on the outer side of the width direction x of the first hook member 13, and the length of the second hook member 14 is longer. It is preferable that the region on the inner side of x is formed to have a shorter length in the width direction x than the region on the outer side in the width direction x of the second hook member 14. If the fastening tape 11 is formed in this way, when the fastening tape 11 is fastened to the fastening corresponding portion 24, the fastening tape 11 has a first hook having a long length in the width direction x. The region on the inner side in the width direction x of the member 13 and the region on the outer side in the width direction x of the second hook member 14 can be stably fastened to the fastening corresponding portion 24. For example, even if the portion of the fastening tape 11 between the first hook member 13 and the second hook member 14 is distorted, the distortion causes the first hook member 13 and the second hook member 14 to move from the fastening corresponding portion 24. It is less likely to come off. Further, even if a force that peels off from the outer side in the width direction x acts on the first hook member 13, the outer side of the width direction x of the first hook member 13 formed so that the length in the width direction x is short. The force is absorbed by the region of the above, and the first hook member 13 is less likely to be unintentionally peeled off from the fastening corresponding portion 24. Similarly, even if a force that peels off from the inner side in the width direction acts on the second hook member 14, the inner side of the width direction x of the second hook member 14 formed so that the length in the width direction x is short. The force is absorbed by the region of the above, and the second hook member 14 is less likely to be unintentionally peeled off from the fastening corresponding portion 24. The fastening tape 11 also facilitates fine adjustment of the fastening position of the first hook member 13 in the region on the outer side of the width direction x of the first hook member 13, and the fastening tape 11 in the width direction of the second hook member 14. It becomes easy to finely adjust the fastening position of the second hook member 14 in the region on the inner side of x.

When the first hook member 13 is divided into three or more regions in the width direction x by the first cut line and / or the recess line 17, the innermost part of the first hook member 13 in the width direction x. The side region is formed so that the length of the width direction x is longer than the outermost region of the width direction x of the first hook member 13, and the adjacent regions are on the inner side of the width direction x. It suffices if the region is formed so that the length of the width direction x is not shorter than the region on the outer side of the width direction x. When the second hook member 14 is divided into three or more regions in the width direction x by the first notch line and / or the recess line 17, the innermost side of the second hook member 14 in the width direction x. The region is formed so that the length of the width direction x is shorter than the region on the outermost side of the width direction x of the second hook member 14, and the adjacent regions are the regions on the inner side of the width direction x. It suffices if it is formed so that the length of the width direction x is not longer than the region on the outer side of the width direction x.

The first hook member 13 and the second hook member 14 are divided into a plurality of areas in the width direction x by the first cut line and / or the recess line 17, and the first hook member 13 is divided into a plurality of areas on the inner side of the width direction x of the first hook member 13. The area is formed to be wider than the area on the outer side in the width direction x of the first hook member 13, and the area on the inner side in the width direction x of the second hook member 14 is the width of the second hook member 14. It is also preferable that the area is formed smaller than the region on the outer side of the direction x. If the fastening tape 11 is formed in this way, when the fastening tape 11 is fastened to the fastening corresponding portion 24, the fastening tape 11 has a large area in the width direction of the first hook member 13. The area on the inner side of x and the area on the outer side in the width direction x of the second hook member 14 can be stably fixed to the fastening corresponding portion 24. Further, even if a force that peels off from the outer side in the width direction x acts on the first hook member 13, the force is due to the region on the outer side in the width direction x of the first hook member 13 formed to have a narrow area. Is absorbed, and the first hook member 13 is less likely to be unintentionally peeled off from the fastening corresponding portion 24. Similarly, even if a force that peels off from the inner side in the width direction x acts on the second hook member 14, the area is concerned by the region on the inner side in the width direction x of the second hook member 14 formed to have a narrow area. The force is absorbed, and the second hook member 14 is less likely to be unintentionally peeled off from the fastening corresponding portion 24. The fastening tape 11 also facilitates fine adjustment of the fastening position of the first hook member 13 in the region on the outer side of the width direction x of the first hook member 13, and the fastening tape 11 in the width direction of the second hook member 14. It becomes easy to finely adjust the fastening position of the second hook member 14 in the region on the inner side of x.

When the first hook member 13 is divided into three or more areas in the width direction x by the first cut line and / or the recess line 17, the innermost part of the first hook member 13 in the width direction x. The area on the side is formed to have a wider area than the outermost region in the width direction x of the first hook member 13, and in the adjacent regions, the region on the inner side in the width direction x is the width direction x. It suffices if it is formed so that the area is not smaller than the area on the outer side of the. When the second hook member 14 is divided into three or more areas in the width direction x by the first cut line and / or the recess line 17, the innermost side of the second hook member 14 in the width direction x. The area is formed to be narrower than the outermost region of the width direction x of the second hook member 14, and the adjacent regions are such that the inner region of the width direction x is outside the width direction x. It suffices if it is formed so that the area is not larger than the area on the side.

As shown in FIG. 5, the first hook member 13 and the second hook member 14 have a second hook member 13 extending obliquely in the front-rear direction y in addition to the first cut line and / or the recess line 17 on the base 15. It is also preferable that the cut line and / or the recess line 18 is formed. If the first hook member 13 and the second hook member 14 are formed in this way, the first hook member 13 and the second hook member 14 are likely to bend not only in the width direction x but also in the diagonal direction thereof. Further, even if a force that peels off from the width direction x or the diagonal direction thereof acts on the first hook member 13 and the second hook member 14, the first hook member 13 and the second hook member 14 are attached from the fastening corresponding portion 24. It becomes difficult to peel off at once. Therefore, when the wearer twists his / her waist diagonally or gets up from the lateral decubitus position while wearing the disposable diaper 1, the first hook member 13 and the second hook member 14 are stable in the fastening corresponding portion 24. It is fixed and can improve the followability of the wearer to various movements.

The base 15 has a second notch line and / or a recess line 18 as a notch line and / or a recess line extending diagonally clockwise at an angle of 15 ° or more and 75 ° or less with respect to the anteroposterior direction y and the anteroposterior direction y. It is preferable that a notch line and / or a recess line extending diagonally counterclockwise at an angle of 15 ° or more and 75 ° or less is formed. It is more preferable that the second cut line and / or the recess line 18 is formed in an orthorhombic grid pattern as shown in FIG. By forming the second notch line and / or the recess line 18 in this way, even if the wearer twists his / her waist in either the right diagonal direction or the left diagonal direction while wearing the disposable diaper 1, for example, the second The 1-hook member 13 and the 2nd hook member 14 are stably fastened to the fastening-corresponding portion 24.

The second cut line and / or recess line 18 preferably extends diagonally at an angle of 20 ° or more clockwise or counterclockwise with respect to the anteroposterior direction y, more preferably an angle of 25 ° or more, and more preferably 30 °. The above angle is more preferable, the angle of 70 ° or less is preferable, the angle of 65 ° or less is more preferable, and the angle of 60 ° or less is further preferable. The second cut line and / or the recess line 18 is also preferably formed so as to extend linearly at an angle with respect to the anteroposterior direction y. The second cut line and / or recess line 18 is preferably formed so as to extend diagonally across the base 15 with the outer edge of the base 15 as a start point and an end point.

As shown in FIG. 6, the first hook member 13 and the second hook member 14 have a third cut line and / or a third cut line extending in the width direction x in addition to the first cut line and / or the recess line 17 on the base 15. Alternatively, it is also preferable that the recess line 19 is formed. If the first hook member 13 and the second hook member 14 are formed in this way, the first hook member 13 and the second hook member 14 are likely to bend not only in the width direction x but also in the front-back direction y. Further, even if a force that peels off from the width direction x or the front-rear direction y acts on the first hook member 13 and the second hook member 14, the first hook member 13 and the second hook member 14 are attached from the fastening corresponding portion 24. It becomes difficult to peel off at once. Therefore, when the wearer takes a leaning posture or applies force to the abdomen while wearing the disposable diaper 1, the first hook member 13 and the second hook member 14 are stably attached to the fastening corresponding portion 24. It is stopped and can improve the followability of the wearer to various movements.

The third cut line and / or the recess line 19 is preferably formed in a straight line extending in the width direction x. The third cut line and / or recess line 19 is also formed to extend across the base 15 in the width direction x, i.e., extend from the inner edge to the outer edge of the base 15 in the width direction x. Is preferable. The third cut line and / or the recess line 19 should be formed so as to extend clockwise or counterclockwise at an angle of 10 ° or less (preferably an angle of 5 ° or less) with respect to the width direction x. In this case as well, it is assumed that the third cut line and / or the recess line 19 is formed so as to extend in the width direction x. The third cut line and / or the recess line 19 may be provided only once in the first hook member 13 or the second hook member 14, or may be provided in a plurality of lines, but a plurality of lines (for example, two lines to the same) may be provided. 4) It is preferable to provide.

In addition to the first cut line and / or the recess line 17, the base 15 may be further formed with both the second cut line and / or the recess line 18 and the third cut line and / or the recess line 19. good. In addition, from the point of ensuring that the first hook member 13 and the second hook member 14 are stably adhered and fixed to the tape base material 12, the base 15 has a second cut line and / or a recessed line 18 and a second. It is preferable that both the cut line and / or the recess line 19 of 3 are not provided.

The second cut line and / or the recess line 18 and the third cut line and / or the recess line 19 may be formed as a cut line or may be formed as a recess line. For example, the substrate 15 is formed with a cut line as a first cut line and / or a recess line 17, and as a second cut line and / or a recess line 18 or a third cut line and / or a recess line 19. , A dent line may be formed. When the disposable diaper 1 is attached, the fastening tape 11 is bent along the circumferential direction of the wearer's waist, so that the first hook member 13 and the second hook member 14 have the first cut line and / Alternatively, if the recessed line 17 is formed, the fastening tape 11 can improve the fit to the wearer's waist at the portion where the first hook member 13 and the second hook member 14 are provided. On the other hand, the second hook line and / or the recess line 18 or the third notch line and / or the recess line 19 is formed as a recess line, so that the first hook member 13 and the second hook member 14 are made of a tape base material. The first hook member 13 and the second hook member 14 are stably adhesively fixed to the 12 and are easily bent in preference to the width direction x, so that the handleability of the fastening tape 11 is improved.

As shown in FIG. 4, the first hook member 13 and the second hook member 14 have an adhesive portion at a position where the base 15 is adhered to the tape base material 12 at the adhesive portion 20 and overlaps with the first cut line or the recess line 17. It is preferable that 20 is not provided and a non-adhesive portion is formed. Since the adhesive portion 20 is not provided at a position overlapping the first cut line or the recess line 17, the first hook member 13 and the second hook member 14 are fastened to the fastening corresponding portion 24. The degree of freedom for the tape 11 to bend at the first notch line or the recess line 17 is increased. Further, even if the fastening tape 11 is bent at the first cut line or recess line 17, the base 15 of the first hook member 13 and the second hook member 14 is fastened with the first cut line or recess line 17 as a starting point. It becomes difficult to unintentionally peel off from the corresponding portion 24. Therefore, the fastening tape 11 can be fastened to the fastening corresponding portion 24 with good fit and stability.

The adhesive portion 20 is preferably not provided within a range of at least 0.3 mm from a position overlapping the first cut line or the recess line 17, and more preferably not within a range of 0.5 mm. It is more preferable that it is not provided within the range of 0 mm. In other words, the non-adhesive portion formed at a position overlapping the first cut line or recess line 17 is preferably formed with a width of 0.6 mm or more along the first cut line or recess line 17. It is more preferably formed with a width of 1.0 mm or more, and further preferably formed with a width of 2.0 mm or more. If the non-adhesive portion is formed at a position overlapping the first cut line or the recess line 17 in this way, the fastening tape 11 can be more fit and stably fastened to the fastening corresponding portion 24. Can be done. On the other hand, at least a part of the adhesive portion 20 is preferably provided within a range of 3.0 mm from a position overlapping the first cut line or the recess line 17, and more preferably within a range of 2.5 mm. , It is more preferable to be provided within the range of 2.0 mm. As a result, the first hook member 13 and the second hook member 14 can be stably adhered and fixed to the tape base material 12.

When the second cut line and / or the recess line 18 is formed on the base 15, the adhesive portion 20 may or may not be provided at a position overlapping the second cut line and / or the recess line 18. May be good. When the third cut line and / or the recess line 19 is formed on the base 15, the adhesive portion 20 may or may not be provided at a position overlapping the third cut line and / or the recess line 19. May be good. In addition, from the viewpoint of ensuring that the first hook member 13 and the second hook member 14 are stably adhered and fixed to the tape base material 12, the first hook member 13 and the second hook member 14 have a second cut line and a second cut line. When the / or recess line 18 or third cut line and / or recess line 19 is formed, the adhesive portion 20 is preferably provided so as to overlap the second cut line and / or recess line 18. It is preferable that the cut line and / or the recessed line 19 overlap with each other.

It is preferable that the adhesive portion 20 is provided in a striped shape extending in the front-rear direction y without overlapping with the first cut line and / or the recess line 17. If the adhesive portion 20 is provided in this way, the fastening tape 11 is likely to bend in the width direction x at the portion where the first hook member 13 and the second hook member 14 are provided, and the circumference of the wearer's waist is easily bent. It is possible to improve the fit along the direction. Further, it becomes easy to secure the bonding strength of the first hook member 13 and the second hook member 14 to the tape base material 12.

Even when the second cut line and / or the recess line 18 or the third cut line and / or the recess line 19 is formed on the first hook member 13 and the second hook member 14, the adhesive portion 20 is the first. It is preferable that the cut line and / or the recess line 17 are not overlapped with each other and are provided in a striped shape extending in the front-rear direction y. FIG. 7 shows the first hook member 13 or the second hook member 14 and the tape base in a state where the first hook member 13 and the second hook member 14 are removed in the enlarged plan view of the adhesive tape 11 shown in FIG. An example of forming the adhesive portion 20 with the material 12 is shown. In FIG. 7, the contour of the portion where the first hook member 13 and the second hook member 14 are provided and the formed portion of the first cut line and / or the recess line 17 and the second cut line and / or the recess line 18 are one point. It is represented by a chain line.

As shown in FIG. 7, the first hook member 13 and the second hook member 14 are formed with a first cut line and / or a recess line 17 and a second cut line 18, and the adhesive portion 20 is formed with a first cut. If the first hook member 13 and the second hook member 14 are provided in a striped shape extending in the front-rear direction y without overlapping with the wire and / or the recessed wire 17, the first hook member 13 and the second hook member 14 tend to bend in preference to the width direction x, and stop. It is possible to improve the fit along the circumferential direction of the wearer of the wearing tape 11. Further, the fastening tape 11 can be stably fastened to the fastening corresponding portion 24.

It is preferable that the adhesive portions 20 are not provided at both ends of the base 15 in the width direction x. As a result, when the first hook member 13 and the second hook member 14 are fastened to the fastening corresponding portion 24, even if a force that shifts in the width direction x acts on the first hook member 13 or the second hook member 14. , The base 15 is less likely to come off starting from both ends. Therefore, the first hook member 13 and the second hook member 14 can be stably fastened to the fastening corresponding portion 24. The adhesive portion 20 is preferably not provided within a range of at least 0.3 mm from both end edges of the base 15 in the width direction x, and more preferably not provided within a range of 0.5 mm.

1: Disposable diaper 2: Diaper body 3: Top sheet 4: Back sheet 5: Absorber 11: Adhesive tape 12: Tape base material 13: First hook member 14: Second hook member 15: Base 16: Engagement element 17: 1st cut line and / or dent line 18: 2nd cut line and / or dent line 19: 3rd cut line and / or dent line 20: Adhesive part 21: Fixed part 22: Intermediate part 23: Knob part 24: Stopping part

Claims (8)

A disposable diaper that has a width direction and a front-back direction and is provided with fastening tapes on both sides of the diaper body in the width direction.
The fastening tape has a tape base material, a first hook member and a second hook member provided on the tape base material, and the second hook member is separated from the first hook member in the width direction. Therefore, it is provided inward in the width direction from the first hook member.
The first hook member and the second hook member have a base and a plurality of engaging elements protruding from the base.
In the first hook member and the second hook member, a first cut line and / or a recess line extending in the front-rear direction is formed on the substrate, and the first cut line and / or the recess line extends in the width direction. Divided into multiple areas,
The region on the inner side in the width direction of the first hook member is formed to be longer in the width direction than the region on the outer side in the width direction of the first hook member.
The disposable diaper is characterized in that the region on the inner side in the width direction of the second hook member is formed to have a shorter length in the width direction than the region on the outer side in the width direction of the second hook member. .. The disposable diaper according to claim 1, wherein the first hook member and the second hook member have a second notch line and / or a recess line extending obliquely in the front-rear direction formed on the base material. As the second cut line and / or dent line, the substrate has a cut line extending diagonally at an angle of 15 ° or more and 75 ° or less in the front-back direction and / or the dent line and the front-back direction. The disposable diaper according to claim 2 , wherein a notch line and / or a recess line extending diagonally at an angle of 15 ° or more and 75 ° or less is formed counterclockwise. The disposable item according to any one of claims 1 to 3 , wherein the first hook member and the second hook member have a third cut line and / or a recess line extending in the width direction formed on the substrate. Diapers. The first hook member and the second hook member are non-adhesive because the base material is adhered to the tape base material at the adhesive portion and the adhesive portion is not provided at a position where the first hook line or the recess line overlaps. The disposable diaper according to any one of claims 1 to 4 , wherein the portion is formed. The disposable diaper according to claim 5 , wherein the adhesive portion is not provided within a range of at least 0.3 mm from a position overlapping the first cut line or the recess line. The base of the first hook member and the second hook member is adhered to the tape base material at an adhesive portion, and the adhesive portion is formed on both ends of the first hook member in the width direction and the second hook member. The disposable diaper according to any one of claims 1 to 6 , which is not provided at both ends in the width direction. The first hook member is provided so as to be separated from the outer edge in the width direction of the tape base material in the width direction.
The length from the outer edge in the width direction of the first hook member to the outer edge in the width direction of the tape base material is the length from the outer edge in the width direction of the first hook member to the first cut line and the first cut line. / Or the disposable diaper according to any one of claims 1 to 7 , which is longer than the length to the recess line.

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