JP6740085B2 - Tape diaper - Google Patents

Description

The present invention relates to a tape-type diaper for low weight children.

In general, a tape-type diaper has a first waistline portion, a crotch part, and a second waistline side by side in the longitudinal direction, and a fastening tape that extends laterally outward from the first waistline portion. 2 It is worn by the wearer by being locked to the waistline.
Tape-type diapers are used for babies and infants, but babies born with a low weight of 3000 grams or less may have a posture when they are inside the womb, that is, a prone posture with both knees attached to the abdomen. Many. Therefore, in Patent Document 1, the absorber has a narrowed portion inward in the width direction, and the narrowed portion is formed closer to the second waistline side (the side opposite to the fastening tape side) in the longitudinal direction. Disclosed diapers are disclosed.

Patent No. 5740520

In addition, the diaper of Patent Document 1 is provided with a pair of three-dimensional gathers standing on the skin side on both sides in the width direction. The three-dimensional gather portion has a pair of base end portions in which both ends in the longitudinal direction of the sheet are fixed to the main body portion of the diaper and cannot stand up, and a portion between the base end portions, which is a standing portion that stands up due to contraction of the elastic member.
Tape diapers are usually worn with the baby on his back. However, when a tape-type diaper is worn on a low-weight baby, the diaper may be worn in the prone position because of the minimal handling concept that it is desirable not to touch the body as much as possible.
Therefore, for example, if the length of the base end portion of the three-dimensional gather portion is short, when the fastening tape is pulled, the three-dimensional gather portion other than around the legs unnecessarily opens or stands up. Then, excrement becomes easy to leak.
In addition, when the diaper is attached, the diaper expanded in the longitudinal direction is passed between the buttocks side (dorsal side) and the ventral side between the legs of the baby in the prone position. Therefore, if the elastic member of the three-dimensional gather portion is strongly contracted, the diaper is likely to bend in the longitudinal direction or to be folded at the folding position during packing, which makes it difficult to pass the diaper and is not easy to wear.

Therefore, it is an object of the present invention to provide a tape-type diaper having good wearability while suppressing the leakage of excrement.

The main invention for achieving the above object is:
Having a longitudinal direction, a width direction and a thickness direction,
A maximum length in the longitudinal direction of the unfolded and stretched state is 330 mm or less, which is a tape-type diaper for low-weight infants that can be worn in either the front or back,
A pair of side flaps extending to both outer sides in the width direction on one side in the longitudinal direction and having fastening tapes fixed thereto;
A pair of three-dimensional gathers located on both sides in the width direction,
The three-dimensional gather portion includes elastic members that can expand and contract in the longitudinal direction, a pair of base end portions that are located at both end portions in the longitudinal direction and that cannot stand in the thickness direction, and the pair of base end portions. And an upright portion that can be upright on the skin side in the thickness direction by the elastic member, and
In the longitudinal direction, the other end of the base end portion on the one side coincides with the other end of the fastening tape, or is located on the other side of the other end of the fastening tape. Then
The expansion ratio of the elastic member is 1.5 times or more and 2.0 times or less ,
The side flap has a wide portion having a maximum length in the width direction,
In the longitudinal direction, the center position of the fastening tape is located on the other side from the center position of the wide portion , which is a tape type diaper.
Other features of the present invention will become apparent from the description of this specification and the accompanying drawings.

According to the present invention, it is possible to provide a tape-type diaper having good wearability while suppressing the leakage of excrement.

1A and 1B are diagrams showing a mounted state of the tape type diaper 1 in the present embodiment. It is the schematic plan view which looked at the diaper 1 of the unfolded and extended state from the skin side of the thickness direction. FIG. 3A is a schematic sectional view of the diaper 1 in the first waistline portion 1A, and FIG. 3B is a schematic sectional view of the diaper 1 in the crotch portion 1B. It is a figure explaining the solid gather part 50. 5A and 5B are diagrams showing a folded form of the diaper 1 during packaging, and FIG. 5C is a diagram showing a mounted state of the diaper 1'of the comparative example. FIG. 6A is a diagram illustrating the shape of the side flap 20 on the side of the first waistline portion 1A, and FIG. 6B is a diagram illustrating the cut line 60. FIG. 7 is a schematic plan view of the diaper 1 of the modified example.

At least the following matters will be made clear by the present specification and the description of the accompanying drawings.
A tape-type diaper for a low-weight child, which has a longitudinal direction, a width direction, and a thickness direction, and has a maximum length in the longitudinal direction in an unfolded and stretched state of 330 mm or less and which can be worn in either the front or the back. There, a pair of side flaps extending to both outer sides in the width direction on one side in the longitudinal direction, and fastening tapes fixed, and a pair of three-dimensional gathers located on both sides in the width direction, The three-dimensional gather portion has elastic members that can expand and contract in the longitudinal direction, a pair of base end portions that are located at both ends in the longitudinal direction, and that cannot stand upright in the thickness direction, and the pair of And an upright portion that is located between the base end portions of the base material and that can stand up to the skin side in the thickness direction by the elastic member, and the other of the base end portions on the one side in the longitudinal direction. The end on the side coincides with the end on the other side of the fastening tape, or is located on the other side from the end on the other side of the fastening tape, and the expansion ratio of the elastic member is 1.5 times or more 2 A tape-type diaper characterized by being less than or equal to 0.0 times.

According to such a tape-type diaper, even when it is attached to a low-weight child who takes a prone posture when he/she is in the womb, that is, the three-dimensional gathers around the side flaps are not fixed between the wearer and the floor. Even when the fastening tape is pulled in, the three-dimensional gather portion can be prevented from opening or standing up at unnecessary positions other than the crotch part, and excrement leakage can be suppressed. In addition, since the elastic member has a relatively low extension ratio, it is easy to maintain the diaper in the longitudinally expanded state, so that the diaper can be smoothly moved from the buttocks side to the abdomen side between the legs of a low-weight child in the prone position. It can be passed through and is easy to wear.

In such a tape-type diaper, a pair of leg elastic members that can expand and contract in the longitudinal direction are provided along the circumference of the wearer's legs, and the extension ratio of the leg elastic members is 1.5 times or more 2 It is a tape-type diaper characterized by being 0.0 times or less.

According to such a tape-type diaper, since the state in which the diaper is deployed in the longitudinal direction is easily maintained, the diaper can be smoothly passed between the legs of a low-weight child in the prone position, and the wearability is good.

In the tape-type diaper, the side flap has a wide portion having a maximum length in the width direction, the fastening tape extends from the wide portion to the outside in the width direction, and In the virtual line connecting the most other end of the side flap and the most other end of the wide portion, and is inclined inward in the width direction toward the other side in the longitudinal direction. In the rectangular area having the imaginary line and having the imaginary line as a diagonal line, the non-existing area is larger than the existing area of the side flap.

According to such a tape-type diaper, since the opening around the leg is wide, the wearer can easily bend the leg strongly as if he/she was in the womb, and the wearing comfort is improved. Moreover, since the area of the side flaps is small, it is difficult for the side flaps to be caught when the diaper is passed between the legs of a low-weight child in a prone position. Therefore, the diaper can be smoothly passed, and the diaper can be passed to a position where the abdomen of a low-weight child is firmly covered, and the diaper can be worn at an appropriate position for a low-weight child, and the wearability is good.

Such a tape-type diaper, wherein the length of the wide portion of the side flap in the longitudinal direction is less than twice the length of the fastening tape in the longitudinal direction. ..

According to such a tape-type diaper, the length of the wide portion is not unnecessarily long and the area of the side flap is smaller than that of the fastening tape extending from the wide portion. Therefore, when the diaper is passed between the legs of a low-weight child in the prone position, the side flaps are unlikely to be caught. Therefore, the diaper can be smoothly passed, and the diaper can be passed to a position where the abdomen of a low-weight child is firmly covered, and the diaper can be worn at an appropriate position for a low-weight child, and the wearability is good.

In such a tape-type diaper, in the longitudinal direction, the central position of the fastening tape is the same as the central position of the wide portion, or is located on the other side of the central position of the wide portion, Tape-type diaper characterized by.

According to such a tape-type diaper, when the diaper is passed between the legs of a low-weight child in the prone position with the fastening tape side in front, the fastening tape is hard to be directly caught by the wearer, and the fastening tape does not easily contact the wearer's skin. The burden can be reduced.

Such a tape-type diaper, which has a cutting line for cutting at least the portion to which the fastening tape is fixed, and one end of the cutting line is farthest from the other end of the side flap in the longitudinal direction. Is also on the other side, and is a tape-type diaper.

According to such a tape-type diaper, since one end of the cutoff line is arranged so as to deviate from the root of the side flap (the end on the othermost side) where the force is likely to concentrate, the cutoff line is inadvertently torn. Can be suppressed.

In such a tape-type diaper, in the cutoff line, through or non-through holes are intermittently arranged in the thickness direction, and the one end of the cutoff line is on a side end in the width direction of the tape-type diaper. The tape-type diaper is characterized in that the hole of the cutoff line extends toward the inside in the width direction with respect to the side end.

According to such a tape-type diaper, it is possible to prevent the cutting line from being inadvertently broken from the hole located at the side end of the diaper as a starting point.

Such a tape-type diaper, having an absorber, in the longitudinal direction, the most one end of the fastening tape and the most one end of the absorber are aligned. It is a characteristic tape-type diaper.

According to such a tape-type diaper, when the diaper is passed between the legs of a low-weight child in the prone position with the fastening tape side facing forward, the two points shifted in the longitudinal direction (the end of the fastening tape and the absorbent body). It prevents the diaper from being crumpled and broken at the end, and allows the diaper to pass through smoothly, making it easy to wear.

This tape-type diaper has an absorber, and the absorber has a first folding guide portion along the width direction at a central portion in the longitudinal direction, and more than the first folding guide portion. The tape-type diaper is characterized in that it has a second folding guide portion along the width direction on the other side in the longitudinal direction.

According to such a tape-type diaper, when the portion to which the fastening tape is fixed is attached so as to be located on the back side of the wearer, the absorbent body is used for a low-weight child who takes a posture in the womb. Is easy to fit. Therefore, the leakage of excrement can be suppressed and the wearing comfort can be improved.

=== Embodiment ===
1A and 1B are diagrams showing a mounted state of a tape-type diaper 1 (hereinafter referred to as "diaper") in the present embodiment. FIG. 2 is a schematic plan view of the diaper 1 in the unfolded and expanded state as seen from the skin side in the thickness direction. FIG. 3A is a schematic sectional view of the diaper 1 in the first waistline portion 1A. FIG. 3B is a schematic sectional view of the diaper 1 in the crotch part 1B. FIG. 4 is a schematic plan view of the diaper 1 and is a diagram illustrating the three-dimensional gather portion 50.

The diaper 1 of the present embodiment has a maximum longitudinal length (so-called product length, L1 in FIG. 2) of 330 mm or less in a developed and expanded state as shown in FIG. It is preferably used for "underweight children". More specifically, it is preferable that the product length is in the range of 210 mm to 330 mm, the product length for a low weight baby of less than 2500 g is about 310 mm, the product length for a low weight baby of less than 1500 g is about 270 mm, It is preferable that the product length for a low-weight child weighing less than 1000 grams is about 230 mm.

The waist size of the diaper 1 in the worn state is preferably in the range of 160 mm to 295 mm, and the waist size for a low weight child of less than 2500 g is about 273.5 mm and the waist size for a low weight child of less than 1500 g. It is preferable that the size is about 220 mm and the waist size for a low-weight child weighing less than 1000 g is about 219 mm. The waist size in the mounted state is a size in which the widthwise tip of the fastening tape 40, which will be described later, is aligned with the side end on the widthwise root side of the hook member 42 of the other fastening tape 40. In addition, when the elastic member is provided around the waist, the diaper 1 is dimensioned in a state of being stretched in the width direction.

The stretched state of the diaper 1 is a stretched state of the diaper 1 such that the wrinkles formed on the diaper 1 are substantially invisible, and each member constituting the diaper 1 (for example, the side sheet 6 described later). The diaper 1 is in a stretched state until the size of (), etc. becomes equal to or close to the size of the single member.

<<Basic configuration of diapers>>
In the unfolded state shown in FIG. 2, the diaper 1 has a longitudinal direction, a width direction, and a thickness direction, and from one side of the longitudinal direction, the first waistline portion 1A, the crotch portion 1B, and the second waistline portion 1C. And have side by side. The thickness direction is, as shown in FIG. 3A and the like, a direction in which the respective members forming the diaper 1 are stacked. In the thickness direction, the side in contact with the wearer is called "skin side", and the opposite side is called "non-skin side".

As shown in FIG. 3A and the like, the diaper 1 includes an absorber 2 that absorbs excreted liquid such as urine, a liquid-permeable top sheet 3 that covers the absorber 2 from the skin side, and the absorber 2 from the non-skin side. A liquid-impermeable leakproof sheet 4 for covering, an exterior sheet 5 for covering the leakproof sheet 4 from the non-skin side and forming the outer shape of the diaper 1, and a pair provided side by side in the width direction on the top sheet 3. And a side seat 6 of.

The top sheet 3 may be an air-through nonwoven fabric, the leak-proof sheet 4 may be a resin film such as a polyethylene film, and the exterior sheet 5 and the side sheet 6 may be an SMS nonwoven fabric (spunbond/meltblown). / Spunbonded non-woven fabric) and the like.

The absorbent body 2 has a rectangular shape whose planar shape is long in the longitudinal direction, and has an absorbent core 2A and a core wrap sheet 2B that covers the outer peripheral surface of the absorbent core 2A. The absorbent core 2A is formed by molding a liquid absorbent material into a predetermined shape. The absorbent core 2A of the present embodiment has a substantially rectangular shape having cutouts 71a to 72a described later. Examples of the liquid absorbent material include liquid absorbent fibers such as pulp fibers containing a super absorbent polymer (so-called SAP). Examples of the core wrap sheet 2B include liquid-permeable tissue paper and non-woven fabric, but the absorbent body 2 may not have the core wrap sheet 2B.

The outer shape of the diaper 1 (FIG. 2) in the unfolded state is substantially an hourglass shape, and the first waistline portion 1A and the second waistline portion 1C respectively extend to both outer sides in the width direction than the crotch portion 1B. It has a pair of side flaps 20, 30. As shown in FIG. 3A, the side flaps 20 and 30 are formed by the side sheet 6 and the exterior sheet 5. A fastening tape 40 is fixed to each of the widthwise outer ends of the pair of side flaps 20 included in the first waistline portion 1A.

The fastening tape 40 has a tape base material 41 and a hook member 42. The tape base material 41 is, for example, a non-woven fabric member, and has a substantially rectangular shape that is long in the width direction. The hook material 42 (for example, a male member of a surface fastener) is provided on the skin side surface of the portion of the tape base material 41 extending outward from the side flap 20 in the width direction.

When the diaper 1 is attached, the diaper 1 in the unfolded state is folded by the wearer while being folded in two substantially at the center in the longitudinal direction, and the pair of side flaps 20 on the first waistline portion 1A side is folded back inward in the width direction. Then, the hook members 42 provided on the pair of fastening tapes 40 are locked to the non-skin side surface of the second waistline portion 1C. In the present embodiment, the hook material 42 can be directly locked to the exterior sheet 5 by making the exterior sheet 5 a non-woven fabric. However, the present invention is not limited to this, and a member such as a female member of a surface fastener with which the hook member 42 is easily locked may be provided separately from the exterior sheet 5. Further, instead of the hook member 42, for example, an adhesive tape may be provided on the fastening tape 40.

Moreover, the diaper 1 has a pair of three-dimensional gathers 50 as leakage barriers at positions on both sides in the width direction. As shown in FIG. 4, each of the three-dimensional gather portions 50 is located at both ends in the longitudinal direction and elastic members 51 (for example, rubber thread) for the three-dimensional gather portion that can expand and contract in the longitudinal direction, and in the thickness direction. A pair of first base end portions 52 (base end portions of the present invention) that cannot stand up, and are located over the entire widthwise direction of the diaper 1 outside the first base end portion 52 in the width direction, and It has the 2nd base end part 53 which cannot stand up in the thickness direction, and the standing part 54 which can stand up on the skin side of the thickness direction.

The first base end portion 52 and the second base end portion 53 have a rectangular shape elongated in the longitudinal direction, and are formed by fixing the side sheet 6 to the top sheet 3. Examples of the fixing method include well-known methods such as adhesion and welding with a hot melt adhesive. In FIG. 4, the two first base end portions 52 are arranged in the width direction at each end portion in the longitudinal direction of each three-dimensional gather portion 50, but the number is not limited to two.

In addition, as shown in FIG. 3B, the side portions on the inner side in the width direction of the side seats 6 are folded back to the skin side. The elastic member 51 is fixed in a stretched state in the longitudinal direction. Therefore, the standing portion 54, which is the portion of the side-sheet 6 between the pair of first base end portions 52 of each three-dimensional gather portion 50, has a thickness with the second base end portion 53 as a fulcrum due to the contraction of the elastic member 51. Stand on the skin side of the direction. In addition, in FIG. 4, the number of the elastic members 51 included in each three-dimensional gather portion 50 is one, but the number is not limited to this, and a plurality of elastic members 51 may be arranged in the width direction.

A pair of elastic members 7 around the leg (for example, rubber thread) that are stretchable in the longitudinal direction are provided on both sides in the width direction of the diaper 1 so as to extend around the legs of the wearer, mainly at the position of the crotch portion 1B. Is provided. Specifically, the leg elastic members 7 are provided outside the elastic member 51 for the three-dimensional gather portion 50 in the width direction in the expanded and expanded state. The leg elastic members 7 are fixed to the non-skin side surface of the side seat 6 in a longitudinally extended state. Therefore, when the diaper 1 is worn, each side portion in the width direction of the diaper 1 fits around the legs of the wearer, and leakage of excrement is suppressed. In FIG. 2, the two leg elastic members 7 are arranged in the width direction on each side portion of the diaper 1 in the width direction, but the number is not limited to two.

In the above description, the rubber thread is illustrated as the elastic member 51 for the three-dimensional gather portion 50 and the leg elastic member 7, but the elastic material is not limited to this. These elastic members 51, 7 may be, for example, a thread-like polyurethane elastic fiber, or an elastic film formed by melting a thermoplastic elastomer resin into a film, or an elastic nonwoven fabric made of an elastic fiber.

<<Features of diapers for low weight children>>
5A and 5B are diagrams showing a folded form of the diaper 1 during packaging, and FIG. 5C is a diagram showing a mounted state of a diaper 1'of a comparative example. FIG. 6A is a diagram illustrating the shape of the side flap 20 on the side of the first waistline portion 1A, and FIG. 6B is a diagram illustrating the cut line 60. FIG. 7 is a schematic plan view of the diaper 1 of the modified example.

Generally, a tape-type diaper is packaged in a state of being folded in two in the longitudinal direction. Also in this embodiment, the diaper 1 in which the side flaps 20 and 30 are folded inward in the width direction as shown in FIG. 5A is further folded in two at substantially the central position P in the longitudinal direction as shown in FIG. 5B. It is assumed to be packed in the state.

By the way, when attaching a tape-type diaper to an infant weighing more than 3000 grams, usually, after the diaper is unfolded in the longitudinal direction, the infant is placed with the infant lying on his back. Further, the first waistline portion 1A to which the fastening tape 40 is fixed covers the back side, and the second waistline portion 1C is mounted so as to cover the abdominal side.

On the other hand, there is an idea that it is desirable for a low-weight child born with a low weight of 3000 g or less (particularly less than 2500 g) to lie on his/her stomach in the posture of being in the womb. As shown in FIG. 1A, etc., the posture when in the womb is a state in which the back is rounded in a C shape, the legs are opened in the M shape, and both knees are attracted to the abdomen. is there. Hereinafter, such a posture peculiar to a low weight child is also referred to as a “bent prone posture”.
In addition, there is a concept of minimal handling that it is desirable to avoid touching the body of a low weight child as much as possible.

Therefore, when the diaper 1 is attached to a low weight child, the low weight child may be attached in a prone position without lying on his back. Therefore, when the first waistline portion 1A is normally worn as shown in FIG. 1A so as to cover the back side (hereinafter also referred to as “front and rear normal wearing”), a hand is placed under the abdomen of a low-weight child in a prone position. The fastening tape 40 has to be put in and locked and removed, so that the mounting property is not good. Therefore, as shown in FIG. 1B, there is a case where the first waistline portion 1A is mounted so as to cover the abdominal side (hereinafter, also referred to as “front-back reverse mounting”).

When the wearer is placed on his back and the diaper 1 is normally worn back and forth, the three-dimensional gather portion 50 located in the first waistline portion 1A is sandwiched between the wearer's back and the floor and fixed, The fastening tape 40 is pulled.
On the other hand, when the diaper 1 is normally worn on the low weight infant in the prone position on the front and back (FIG. 1A), the first waistline portion 1A is located on the upper side. In addition, when the diaper 1 is worn backwards and forwards on a low weight child in a bent prone position (FIG. 1B), there is a space between the abdomen and the floor. Therefore, the fastening tape 40 is pulled in a state where the three-dimensional gather portion 50 located in the first waistline portion 1A is not fixed.
When the fastening tape 40 is pulled outward in the width direction due to the wearing of the diaper 1, the force outward in the width direction strongly acts on the portion of the first waistline portion 1A that overlaps the fastening tape 40 in the longitudinal direction. To do.

Therefore, in the diaper 1 of the present embodiment, as shown in FIG. 4, in the longitudinal direction, the other end 52a of the first base end portion 52 on one side (fastening tape 40 side) is attached to the other side of the fastening tape 40. Of the edge 40a. Specifically, the first base end portion 52 extends from the end 1b on one longitudinal side of the diaper 1 to the same position as the end 40a on the other side of the fastening tape 40 in the longitudinal direction, and the longitudinal direction where the fastening tape 40 is located. The 1st base end part 52 is provided over the whole region of a direction. That is, the first base end portion 52 is provided in a portion where the force strongly acts when the fastening tape 40 is pulled, and the three-dimensional gather portion 50 (side sheet 6) is fixed to the top sheet 3.

Therefore, as in the case of wearing the diaper 1 on a low weight child, the fastening tape 40 is pulled in a state where the three-dimensional gather portion 50 located in the first waistline portion 1A is not fixed between the wearer and the floor, for example. Even if there is, it is possible to prevent the three-dimensional gather portion 50 (side seat 6) from opening outward or standing up in the width direction at unnecessary positions other than the crotch portion 1B. Therefore, leakage of excrement due to unnecessary opening of the three-dimensional gather portion 50 can be suppressed, and a gap due to unnecessary standing of the three-dimensional gather portion 50 can be prevented from occurring, whereby leakage of excrement can be suppressed.

In addition, it is possible to prevent unnecessary opening and standing of the three-dimensional gather portion 50 and prevent leakage of excrement both in the case of normal wearing in the front and rear (FIG. 1A) and in the case of wearing reverse in the front and rear (FIG. 1B). Therefore, it can be said that the diaper 1 of the present embodiment can be worn on either the front side or the back side.

Further, as in the diaper 1 of the modified example shown in FIG. 7, in the longitudinal direction, the other end 52 a of the first base end portion 52 on one side (fastening tape 40 side) is the other end 40 a of the fastening tape 40. It may be located on the other side. In this case, the same effect can be obtained.

Further, although the fastening tape 40 of the present embodiment has a substantially rectangular shape, the present invention is not limited to this and, for example, the fastening tape 40 may have a trapezoidal shape or the like.
In addition, for example, in the fastening tape 40, a portion fixed to the side flap 20 (a portion 43 surrounded by a dotted line in FIG. 2) and a portion extending from the side flap 20 have different lengths in the longitudinal direction. May be.
In these cases, regardless of whether they extend from the side flaps 20 or not, the farthest end 40a of the fastening tape 40 in the longitudinal direction and the other end 52a of the first base end portion 52 coincide with each other, Alternatively, the other end 52a of the first base end portion 52 may be located on the other side of the other end 40a of the fastening tape 40.

Further, in the diaper 1, the expansion ratio of the elastic member 51 for the three-dimensional gather portion 50 is set to a relatively low value in the range of 1.5 times or more and 2.0 times or less. Preferably, it should be about 1.50 to 1.85 times. The extension ratio is the degree of extension when the natural length of the elastic member is 1, and represents the strength of expansion and contraction of the elastic member 51. For example, when the elastic member is fixed to a sheet or the like in a state of being stretched to a length of 1.9 times the natural length, the stretch ratio of the elastic member is 1.9.

Similarly, the expansion ratio of the leg elastic members 7 is preferably 1.5 times or more and 2.0 times or less. It is preferably about 1.60 to 1.95 times. When there are a plurality of leg elastic members 7, the extension ratios of the leg elastic members 7 may be different. In this case, the extension ratio of at least one leg elastic member 7 is 1.5 times or more. It is preferably 2.0 times or less.

If the expansion ratio of the elastic member 51 for the three-dimensional gather portion 50 is set to less than 1.5 times, the standing portion 54 of the three-dimensional gather portion 50 becomes difficult to stand on the skin side. Therefore, by setting the expansion ratio of the elastic member 51 to 1.5 times or more, the three-dimensional gather portion 50 can function as a leak preventive wall, and side leakage of excrement can be suppressed.

Similarly, if the expansion ratio of the leg elastic members 7 is less than 1.5, it becomes difficult for the diaper 1 to fit around the leg of the wearer. Therefore, by setting the extension ratio of the elastic member 51 around the leg to 1.5 times or more, the diaper 1 fits around the leg of the wearer and the leakage of excrement can be suppressed.

Further, if the expansion ratios of the elastic member 51 and the leg-surrounding elastic member 7 are set to be greater than 2.0 times, the elastic member 51 and the leg-surrounding elastic member 7 contract, and the diaper 1 is in a natural state. Is easily bent inward in the longitudinal direction or is folded at the folding position P (FIG. 5A) at the time of packaging. Therefore, by maintaining the expansion ratio of the elastic member 51 and the elastic member 7 around the leg to 2.0 times or less, the diaper 1 can be maintained in the longitudinally expanded state in the natural state (for example, the state of FIG. 2 or FIG. 5A). Easier to do.

When wearing a diaper 1 on a low-weight child, the diaper 1 is deployed longitudinally from the buttocks side (dorsal side) to the ventral side between the legs of the low-weight child in the prone position, from the viewpoint of minimal handling. Will be passed through. Therefore, in the natural state, the state in which the diaper 1 is expanded in the longitudinal direction is maintained, so that the diaper 1 can be smoothly passed between the legs of a low-weight child, and the wearability of the diaper 1 is improved.

The elastic member 51 for the three-dimensional gather portion 50 preferably has a lower extension ratio than the leg elastic members 7. By doing so, in the natural state of the diaper 1, the three-dimensional gathered portion 50 can be prevented from standing up too much, and the three-dimensional gathered portion 50 can be raised upright, so that the state where the diaper 1 is deployed in the longitudinal direction is It becomes easier to maintain. In addition, the diaper 1 can be brought into close contact with the wearer's legs around the legs by the leg-surrounding elastic members 7, and the leakage of excrement can be suppressed.
For the same reason, as shown in FIG. 2, the length of the elastic member 51 for the three-dimensional gather portion 50 (the length of the effective length portion fixed to the sheet and exhibiting elasticity) is set to the length of the leg-surrounding elastic member 7. It is preferable that the length is shorter than the length (length of the effective length portion).

In addition, in the case of a tape-type diaper for infants having a weight of more than 3000 grams, the expansion ratio of the elastic member 51 and the leg-surrounding elastic member 7 is generally set to a value larger than 2 times. Infants with small weight move less than infants who often move their legs or the like. Therefore, in the diaper 1 of the present embodiment, even if the extension ratio of the elastic members 51, 7 is lowered, the possibility of leakage of excrement is small. Further, by lowering the extension ratio, it is possible to prevent tightening on a low weight child and reduce the burden on the weak skin of the low weight child.

In addition, the bent posture peculiar to the low weight child has a more appropriate leg bending angle. That is, as shown in FIG. 5C, there is an appropriate angle on the line La that connects the knee of the low weight child and the crotch of the low weight child. The nurse or the like determines whether or not the bending angle of the leg is appropriate based on the line connecting the knee of the low weight child and the position of the inseam of the low weight child estimated from the diaper 1.
In the diaper 1′ of the comparative example in which the expansion ratio of the elastic member 51 and the elastic member 7 around the leg is larger than 2.0, as shown in FIG. 5C, the diaper 1 was folded at the folding position P during packing. It is easy to be worn in a state, and a space is easily created between the wearer's crotch area and the diaper 1. Then, the nurse or the like determines that the folded position P is the crotch of the wearer, and confirms the bending angle of the leg with the wrong angle of the line Lb.
Therefore, as in the diaper 1 of the present embodiment, by setting the expansion ratio of the elastic member 51 and the leg elastic member 7 to 2.0 or less, the influence of the half-fold position P can be reduced when the diaper 1 is worn, The diaper 1 is easily worn along the wearer's body. Therefore, the nurse or the like can appropriately determine the bending angle of the leg even from above the diaper 1.

The expansion ratio of the elastic member may be measured by a known method, for example, the following method. First, in the diaper 1 in a natural state, the length H0 in the longitudinal direction of the effective length portion (that is, the portion fixed to the sheet in the stretched state) that exhibits elasticity is measured in the elastic member to be measured. Next, the length H1 in the longitudinal direction of the effective length portion of the elastic member is measured in a state in which the diaper 1 is maximally extended in the longitudinal direction so that the wrinkles formed in the diaper 1 can no longer be visually recognized. Then, the expansion ratio of the elastic member is calculated by the following expression “expansion ratio=H1/H0”.

Further, in the diaper 1 of the present embodiment, as shown in FIG. 4, the first proximal end portion 52 on one side in the longitudinal direction reaches the absorber 2, and the first proximal end portion 52 on the other side in the longitudinal direction also reaches the absorber 2. Has reached. The portion of the diaper 1 formed of a sheet on the outer side in the longitudinal direction of the absorber 2 has lower rigidity than the portion where the absorber 2 is present. Therefore, as shown in FIG. 4, the first base end portion 52 may be formed over the entire region in the longitudinal direction of the portion where the absorber 2 does not exist to enhance the rigidity.
By doing so, when the diaper 1 is attached, when the diaper 1 is passed between the legs of a low-weight child in the prone position, the part outside the absorbent body 2 in the longitudinal direction is less likely to be broken and can be passed smoothly. This improves the wearability of the diaper 1.

Further, as shown in FIG. 6A, the side flap 20 to which the fastening tape 40 is fixed has a wide portion 21 in which the length (L2) in the width direction of the side flap 20 is the maximum, and the side flap 20 has the largest length in the longitudinal direction. It has an end 22 on the other side (inner side), that is, a "root point 22". The fastening tape 40 extends from the wide portion 21 to the outside in the width direction. The root point 22 is a point where the width of the diaper 1 becomes the smallest. Specifically, the tangent to the lateral side 1a in the width direction of the diaper 1 may be inclined along the longitudinal direction or in the opposite direction from the portion inclined inward in the width direction toward the other side in the longitudinal direction. It is a boundary point that changes to.

Then, as shown in FIG. 6A, the diaper 1 is an imaginary line Lc connecting the root point 22 on the other side of the side flap 20 and the end 23 on the most other side of the wide portion 21 in the longitudinal direction. It has an imaginary line Lc inclined inward in the width direction toward the other side in the direction. In the diaper 1 of the present embodiment, in the rectangular region A having the imaginary line Lc as a diagonal line, the non-existing region is larger than the existing region (hatched portion) of the side flap 20.

That is, the side edge 24 of the side flap 20 is scooped inward of the virtual line Lc. In other words, the side edge 24 of the side flap 20 is curved so as to be convex on the side flap side (D1 side in FIG. 6A) in the direction orthogonal to the imaginary line Lc, and the leg opening is wide. .. Therefore, it is easy for a low weight child to take a bending posture in which the legs are strongly bent, and the wearing comfort is improved. Further, it is possible to prevent the side flaps 20 from being turned over to the non-skin side in the legs of a low-weight child who is in a bent posture, and to prevent excrement from leaking from around the legs.

The side flap 20 of the present embodiment has a smaller area than the side flap that is curved so as to be convex toward the side opposite to the D1 side in FIG. 6A, for example. Therefore, when the diaper 1 is attached, it is difficult for the side flaps 20 to get caught in the legs when the diaper 1 is passed between the legs of a low-weight child in the prone position. Therefore, the diaper 1 can be smoothly passed through and the wearability is good. Further, it is possible to prevent the diaper 1 from being attached at the position where the side flap 20 is caught on the leg and stopped. That is, the diaper 1 can be passed to a position where the abdomen of a low weight child is firmly covered, and the diaper 1 is attached to an appropriate position of a low weight child, and excrement leakage can be suppressed.

Further, in the side flap 20 of the present embodiment, the length L3 of the wide portion 21 is less than twice the length L4 of the fastening tape 40 in the longitudinal direction of the diaper 1 (L3<2×L4). That is, the length of the wide portion 21 is not unnecessarily long with respect to the fastening tape 40 extending from the wide portion 21, and the area of the side flap 20 is as small as possible. Therefore, when the diaper 1 is passed between the legs of a low weight child, the side flaps 20 become more difficult to get caught. Therefore, the diaper 1 can be smoothly passed, and the diaper 1 can be passed to a position where the abdomen of a low weight child is firmly covered.

In addition, the width L4 of the fastening tape 40 (length in the longitudinal direction of the diaper 1) may not be constant. In that case, in the longitudinal direction of the diaper 1, the length L3 of the wide portion 21 is less than twice the maximum length of the portion of the fastening tape 40 extending from the side flap 20, or the root (width of the fastening tape 40 It is preferably less than twice the length of the inner edge). However, not limited to these, for example, the length L3 of the wide portion 21 may be less than twice the minimum length of the portion of the fastening tape 40 extending from the side flap 20, and is fixed to the side flap 20. It may be less than twice the length of the portion of the fastening tape 40.

Further, since the fastening tape 40 is a portion that the wearer picks, it is a member having high rigidity and hardness as compared with other members of the diaper 1. Therefore, as shown in FIG. 6B, in the longitudinal direction of the diaper 1, the central position CL1 of the fastening tape 40 is located on the other side (inner side) in the longitudinal direction than the central position CL2 of the wide portion 21, or As shown in FIG. 7, it is preferable that the central position CL1 of the fastening tape 40 and the central position CL2 of the wide portion 21 are aligned.

By doing so, the length L5 from the end 25 on one side of the wide portion 21 to the end 40b on the one side of the fastening tape 40 in the longitudinal direction is changed from the end 40a on the other side of the fastening tape 40 to the other side of the wide portion 21. The length to the end 23 on the side is L6 or more. Therefore, since the diaper 1 is worn backwards and forwards (FIG. 1B), when the diaper 1 is passed between the legs of a low-weight child with the fastening tape 40 side facing forward, for example, the sheet passed before the fastening tape 40. A hard portion of the fastening tape 40 is less likely to be directly caught by a low weight child by breaking the portion and wrapping the fastening tape 40. Therefore, the burden on the skin of a low weight child can be reduced.

Further, in the diaper 1, a difference in rigidity occurs at the end 40b on one side of the fastening tape 40 in the longitudinal direction and the end 2a of the absorbent body 2, and the diaper 1 is easily broken. Therefore, as shown in FIG. 4, it is advisable to align the end 40b on the most one side of the fastening tape 40 and the end 2a on the most one side of the absorbent body 2 in the longitudinal direction.

By doing so, when inserting the diaper 1 with the fastening tape 40 side forward between the legs of a low-weight child, at the folding start points (the ends of the fastening tape 40 and the absorber 2) that are displaced in the longitudinal direction, It is possible to prevent the diaper 1 from being crumpled. Therefore, the diaper 1 can be smoothly passed through, and the wearability of the diaper 1 is improved.

As described above, the diaper 1 of the present embodiment is devised in consideration of passing the diaper 1 between the legs of a low-weight child with the fastening tape 40 side in front (that is, wearing the back and forth backwards). There is. Therefore, it can be said that the diaper 1 of the present embodiment can be worn on either the front side or the back side.

Further, as shown in FIG. 2, the diaper 1 has a cut line 60 for cutting at least a portion (dotted line portion 43) where the fastening tape 40 is fixed to the first waistline portion 1A. Since the diaper 1 has a pair of fastening tapes 40, it also has a pair of cut lines 60.

As shown in FIG. 6B, the cutoff line 60 of the present embodiment is formed by perforations, and is formed by intermittently arranging through-holes or non-through-holes 61 in the thickness direction. However, the present invention is not limited to this, and the cut line 60 may be formed by, for example, a groove-shaped continuous recess, and it is sufficient that a part of the diaper 1 is easily separated from the main body along the cut line 60.

In addition, the cutoff line 60 of the present embodiment passes from the end 1b on one side in the longitudinal direction of the diaper 1 (that is, the portion that becomes the waistline opening when worn) to the position inside the fixing tape 43 of the fastening tape 40 in the width direction. And extends toward the lateral end 1a of the diaper 1 in the width direction (that is, a portion that becomes an opening around the leg when worn). Specifically, the cut line 60 is a straight line portion extending along the longitudinal direction from the end 1b on one longitudinal side of the diaper 1, and a curved portion curved from the straight line portion toward the side end 1a in the width direction of the diaper 1. Have and. However, the shape of the cutoff line 60 is not limited to that shown in the figure, and may be any shape as long as the fixed portion 43 of the fastening tape 40 can be cut out.

Since the diaper 1 has the cut line 60, for example, in the case of the normal front and rear wear (FIG. 1A), the cut line 60 can be cut without putting the hand under the abdomen of the low weight child and removing the fastening tape 40. Good. Then, in a state where the fastening tape 40 (hook material 42) is locked to the second waistline portion 1C, the connection between the first waistline portion 1A and the second waistline portion 1C is released, and the diaper 1 is expanded in the longitudinal direction. .. Finally, pulling out the diaper 1 from between the legs of a low weight child allows the wearer to easily remove the diaper 1.

In the case of the reverse mounting (FIG. 1B), the cutting line 60 is cut so that the fastening tape 40 is locked to the second waistline portion 1C located on the back side. Unfolds in the longitudinal direction. Therefore, the diaper 1 can be pulled out without passing the first waistline portion 1A to which the hard fastening tape 40 is fixed between the legs of the low weight child, and the burden on the skin of the low weight child can be reduced.

Further, as shown in FIG. 6B, one end 62 of the cutoff line 60 (the end 62 extending toward the side end 1a in the width direction of the diaper 1) has an end 22 (that is, the other end) of the side flap 20 in the longitudinal direction (that is, , And is located on the other side of the root point 22) of the side flap 20. Since the force is likely to be concentrated on the root points 22 of the side flaps 20, it is preferable to dispose the root points 22 of the side flaps 20 and the one ends 62 of the cut lines 60 so as to be displaced in the longitudinal direction.

By doing so, for example, when the fastening tape 40 is pulled outward in the width direction for wearing the diaper 1, it is possible to prevent the tear line 60 from being inadvertently broken starting from the one end 62 of the tear line 60. it can. Moreover, when the side flap 20 is caught on the leg of the low weight child when the diaper 1 is passed between the legs of the low weight child with the fastening tape 40 side facing forward, the cut line 60 is inadvertently torn. It is possible to prevent it.

Further, as shown in FIG. 6B, it is preferable that the hole 61 of the cutoff line 60 is located inside the widthwise side end 1 a of the diaper 1 in the width direction. If the hole 61 of the cut line 60 reaches the side end 1a of the diaper 1, a cut is formed in the side end 1a, and the cut line 60 easily breaks from the hole 61 of the side end 1a. I will end up. Therefore, by disposing the holes 61 as described above, it is possible to prevent the cut line 60 from being inadvertently broken.

Further, as shown in FIG. 6B, when the diaper 1 is viewed in the thickness direction, it is preferable that the cutoff line 60 and the leg elastic member 7 are arranged so as to intersect with each other. By doing so, even if the cutting line 60 begins to break carelessly from the one end 62 of the cutting line 60, the leg elastic member 7 can suppress the progress of the breaking of the cutting line 60.
The diaper 1 may not have the cutoff line 60.

In addition, as shown in FIG. 2, the absorbent body 2 includes a first folding guide portion 71 along the width direction at a central portion in the longitudinal direction (around the central position CL), and a longitudinal direction more than the first folding guide portion 71. The second folding guide portion 72 along the width direction is provided on the other side of the. The first to second folding guide portions 71 to 72 are portions that guide the absorbent body 2 so as to bend in the longitudinal direction along the width direction (or substantially the width direction).

The first folding guide portion 71 is formed by providing a pair of cutout portions 71a on both sides of the absorbent core 2A in the width direction. In the cutout portion 71a, the basis weight of the member (liquid absorbent fiber) forming the absorbent core 2A is lower than that of the peripheral region, or the member forming the absorbent core 2A does not exist. Further, the pair of cutout portions 71a are provided at the same position in the longitudinal direction. Therefore, in the first folding guide 71, the absorber 2 is easily folded along the width direction due to the difference in rigidity with the surrounding area.

Similarly, the second folding guide portion 72 is also formed by providing a pair of cutout portions 72a on both sides of the absorbent core 2A in the width direction. In the present embodiment, the cutouts 71a to 72a are formed in a mountain shape that is convex inward in the width direction, but the shape is not limited to this, and may be, for example, a rectangular shape.

Since the absorbent body 2 has the first folding guide portion 71 and the second folding guide portion 72, the absorbent body 2 easily fits to the wearer when normally worn in the front and rear (FIG. 1A ). Specifically, the portion of the absorbent body 2 between the first folding guide portion 71 and the second folding guide portion 72 (that is, the portion closer to the other side than the central position CL) serves as the bottom, so that the wearer can take a bending posture. It fits the crotch part, and the parts of the absorbent body 2 before and after that fit up to fit the abdomen and back of the wearer.

Since the absorbent body 2 fits the wearer in this manner, it is possible to prevent the occurrence of a gap and suppress the leakage of excrement. Further, by making it easy to fit the absorber 2 to a low-weight child who takes a bending posture, it is possible to prevent the low-weight child from being pressed by the absorber 2 having high rigidity, and to reduce the burden on the low-weight child. However, the present invention is not limited to this, and for example, the absorber 2 may not have the second folding guide portion 72, or the absorber 2 may not have the first to second folding guide portions 71 to 72. Good.

Further, in the present embodiment, the absorbent core 2A is provided with the cutout portions 71a to 72a to form the first to second folding guiding portions 71 to 72, but the present invention is not limited to this. For example, a compressed portion (embossing) obtained by compressing the absorbent core 2A in the thickness direction is formed along the width direction, or a bending process of folding the absorbent core 2 along the width direction is performed on the absorbent core 2 in the manufacturing process. Or to reduce the basis weight of the member constituting the absorbent core 2 along the width direction, to form a slit along the width direction at the central portion of the absorbent core 2 in the width direction, The first to second folding guide portions 71 to 72 may be formed by forming cuts along the width direction on both side portions in the width direction. Further, the second folding position P (FIG. 5A) at the time of packaging may be the first folding guiding portion 71.

Although the embodiments of the present invention have been described above, the above embodiments are for the purpose of facilitating the understanding of the present invention and not for limiting the interpretation of the present invention. Further, it is needless to say that the present invention can be modified or improved without departing from the gist thereof and that the present invention includes equivalents thereof. For example, the following modifications are possible.

1 diaper (tape type diaper),
1A 1st waist part, 1B crotch part, 1C 2nd waist part,
2 absorber, 2A absorbent core, 2B core wrap sheet,
3 top sheet, 4 leakproof sheet, 5 exterior sheet,
6 side seats, 7 elastic members around the legs,
20 side flaps, 21 wide part, 30 side flaps,
40 fastening tape, 41 tape base material, 42 hook material,
50 three-dimensional gather part, 51 elastic member, 52 first base end part (base end part),
53 second base end portion, 54 standing portion,
60 cut lines, 61 holes,
71 1st folding guide part, 71a Notch part, 72 2nd folding guide part,
72a Notch, Lc virtual line, A rectangular area,

Claims (8)

Having a longitudinal direction, a width direction and a thickness direction,
A maximum length in the longitudinal direction of the unfolded and stretched state is 330 mm or less, which is a tape-type diaper for low-weight infants that can be worn in either the front or back,
A pair of side flaps extending to both outer sides in the width direction on one side in the longitudinal direction and having fastening tapes fixed thereto;
A pair of three-dimensional gathers located on both sides in the width direction,
The three-dimensional gather portion includes elastic members that can expand and contract in the longitudinal direction, a pair of base end portions that are located at both end portions in the longitudinal direction and that cannot stand in the thickness direction, and the pair of base end portions. And an upright portion that can be upright on the skin side in the thickness direction by the elastic member, and
In the longitudinal direction, the other end of the base end portion on the one side coincides with the other end of the fastening tape, or is located on the other side of the other end of the fastening tape. Then
The expansion ratio of the elastic member is 1.5 times or more and 2.0 times or less ,
The side flap has a wide portion having a maximum length in the width direction,
A tape-type diaper characterized in that a center position of the fastening tape is located on the other side with respect to a center position of the wide portion in the longitudinal direction . The tape-type diaper according to claim 1,
Along the circumference of the wearer's legs, a pair of leg elastic members that can expand and contract in the longitudinal direction are provided,
A tape-type diaper, wherein the elastic ratio of the leg elastic member is 1.5 times or more and 2.0 times or less. The tape-type diaper according to claim 1 or 2 , wherein
The fastening tape extends from the wide portion to the outside in the width direction,
In the longitudinal direction, it is a virtual line that connects the end of the side flap closest to the other side and the end of the wide portion closest to the other side, and extends in the width direction toward the other side of the longitudinal direction. Having the imaginary line inclined inward,
A tape-type diaper, characterized in that, in a rectangular area having the imaginary line as a diagonal line, a non-existing area is larger than an existing area of the side flap. The tape type diaper according to claim 3,
The length of the wide portion of the side flap in the longitudinal direction is less than twice the length of the fastening tape in the longitudinal direction. The tape type diaper according to any one of claims 1 to 4 ,
At least the fastening tape has a cutting line for cutting out a portion where the fastening tape is fixed,
The tape-type diaper characterized in that one end of the cutoff line is located on the other side of the side flap at the most other end in the longitudinal direction. The tape-type diaper according to claim 5 ,
In the cut line, through or non-through holes are arranged intermittently in the thickness direction,
The one end of the cut line extends toward a side end of the tape type diaper in the width direction,
The tape-type diaper, wherein the hole of the cutoff line is located on the inner side in the width direction than the side end. The tape-type diaper according to any one of claims 1 to 6 ,
Has an absorber,
A tape-type diaper characterized in that, in the longitudinal direction, an end of the fastening tape on the most one side and an end of the absorbent body on the most one side are coincident with each other. The tape-type diaper according to any one of claims 1 to 7 ,
Has an absorber,
The absorbent body has a first folding guide portion along the width direction at a central portion in the longitudinal direction, and further extends along the width direction on the other side in the longitudinal direction with respect to the first folding guide portion. A tape-type diaper having a second folding guide portion.

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