JP7399418B2 - absorbent articles - Google Patents

Description

The present invention relates to absorbent articles such as interlocking (tape type) disposable diapers and pad type disposable diapers.

Some absorbent articles are worn by spreading them out on a bed or bed and placing the buttocks on top of them. Examples of such absorbent articles include a connecting type (tape type) disposable diaper that connects both sides of the dorsal part to both sides of the ventral part when worn (see, for example, Patent Document 2), and An example is a pad type disposable diaper in which the diaper is not connected to both sides of the abdominal part.

However, since absorbent articles are flexible and easily deformed, simply grasping the edges of the absorbent article may cause it to bend when placed on a bed, etc., so there is room for improvement in terms of ease of laying. .

In particular, for infants, it is common to lift the buttocks by holding the legs with one hand and place an absorbent article under the buttocks with the other hand. At this time, the part of the absorbent article located under the buttocks tends to bend inward or outward, which may require work to correct the bending or may require re-laying the product many times. be. Needless to say, such a time and effort for replacement is stressful for both the infant and the replacement worker.

Furthermore, when attaching the device to a low birth weight baby, it is preferable that the time of contact with the body be as short as possible, and it is also desirable that the body should move as little as possible, so redoing the work is not desirable.

Furthermore, the position of the replacement worker relative to the wearer may be restricted, such as when replacing the product inside an incubator. Such limitations make it particularly difficult to reach from the side of the wearer and place the product under the buttocks.

Special Publication No. 2001-509402 Japanese Patent Application Publication No. 2013-146392

Therefore, the main object of the present invention is to provide an absorbent article that can be easily placed on a bed or the like by a replacement worker.

Absorbent articles that have solved the above problems are as follows.
<First aspect>
It can be worn by placing it under the wearer's buttocks,
a ventral portion extending forward from the center of the product in the front-rear direction;
a dorsal portion extending rearward from the center in the front-rear direction of the product;
A crotch portion extending from the front side of the center of the product in the front-back direction to the back side of the center of the product in the front-back direction,
An absorbent body is built-in over the area including the groin area,
An insertion portion having an insertion opening is provided on the outer surface of the dorsal portion,
The insertion portion has a cylindrical portion communicating with the insertion port,
one hand or fingers thereof is configured to be inserted into the cylindrical portion through the insertion opening along the outer surface of the product;
The entrance of the cylindrical portion extends in a first direction intersecting the width direction at an angle of 30 to 90 degrees, and the direction of insertion of the one hand or fingers thereof is perpendicular to the first direction. The second direction is
An absorbent article characterized by:

(effect)
With this absorbent article, the dorsal portion of the product can be worn on one hand or fingers by placing the hand or fingers into the insertion portion with the inner surface of the hand facing the outer surface of the product. Then, in this state, place the product on a bed or the like with the back of your hand facing downward, and place your buttocks on it. At this time, since the product and the hand are integrated, the position on which the buttocks should be placed can be finely adjusted by simply adjusting the position of the hand. Then, with a part of the buttocks preferably placed on a part of the product that does not overlap with the hand (this may be before or after the buttocks are placed on the product), place the hand or finger on the insertion part of the product. By pulling it out, you can easily and accurately place the product under the buttocks.

In particular, by placing the dorsal part of the product in one hand or fingers, the product can be held securely with one hand. It also makes it much easier to place absorbent articles on the floor. In addition, replacement work becomes easier even under dim conditions such as at night.

Further, the insertion portion of the absorbent article has a cylindrical portion communicating with the insertion opening, and the entrance of the cylindrical portion extends along the first direction intersecting the width direction at an angle of 30 to 90 degrees. In addition, since the second direction perpendicular to the first direction is the insertion direction, the direction of the hand or arm is more natural when inserting either the left or right finger or hand from the side of the product. become. Therefore, even when replacing the product in an incubator by inserting the hand from the side of the wearer and placing the product under the buttocks, work can be done comfortably with the product on the finger or in the hand. I can do it.

<Second aspect>
A plurality of adjacent fingers or hands can be inserted from the insertion opening to the cylindrical portion;
Absorbent article of the first aspect.

(effect)
When the dimensions of the insertion portion are within the range of this embodiment, when this product is worn in the hand, a wide range of the dorsal part can be supported by the hand while expanding the dorsal part in the width direction. Therefore, the above-mentioned mounting operation becomes easier.

<Third aspect>
When the longitudinal dimension of the dorsal part is LB, the entrance of the cylindrical part is in an area with a radius of 0.8 x LB centered on the longitudinal center and the widthwise center of the dorsal part. is located,
The absorbent article according to the first or second aspect.

(effect)
When the position of the entrance of the cylindrical portion is within the range of this embodiment, when this product is worn in the hand, a wide range of the back side portion in the front and back direction can be supported by the hand in a well-balanced manner. Therefore, the above-mentioned mounting operation becomes easier.

<Fourth aspect>
The insertion ports are provided on one side and the other side in the width direction of the back side portion, respectively.
The absorbent article according to any one of the first to third aspects.

(effect)
With the absorbent article of this aspect, even when the product is placed under the buttocks from either the left or right side of the wearer, the angle of either the right or left hand or arm of the replacement worker can be maintained in a more natural direction. I can do it.

<Fifth aspect>
The dimension of the cylindrical portion in the first direction is 60 to 90 mm,
The dimension of the cylindrical portion in the second direction is 20 to 80 mm.
The absorbent article according to any one of the first to fourth aspects.

(effect)
When the dimension of the cylindrical portion in the first direction is within the range of this embodiment, it becomes suitable for inserting three fingers, the index finger, the middle finger, and the ring finger, or four fingers other than the thumb into the insertion portion. In this case, since the thumb and little finger are free, there is an advantage that the product can be supported more widely and freely. Further, since the dimension of the cylindrical portion in the second direction is sufficiently long, it becomes easier to spread the dorsal portion to fit the shape of the hand, and for example, it becomes easier to maintain a wider area flat.

<Sixth aspect>
The back side portion has side flaps that extend further on both sides in the width direction than the absorbent body,
A band-shaped patch sheet extending in the first direction is laminated on a portion of the outer surface of the back side portion that overlaps with the absorbent body,
Both ends in the longitudinal direction of the patch sheet have a joint part joined to an opposing surface on the inside thereof,
A portion between the bonded portion on one side and the bonded portion on the other side of the patch sheet in the longitudinal direction is a non-bonded portion that is not bonded to the opposing surface,
the cylindrical portion is formed by the non-joining portion and the opposing surface;
The absorbent article according to any one of the second to fifth aspects.

(effect)
The insertion part can be constructed, for example, by providing a cut or a non-joint part in an existing member of the absorbent article, or by attaching an assembly assembled into a cylinder or bag shape using a sheet to the outer surface of the dorsal part. However, it is also preferable to construct it by adding a dedicated patch sheet as in this embodiment. In this case, by providing the joint part of the patch sheet in the part that overlaps with the absorbent body, the insertion part is less likely to deform when a finger or hand is inserted into the insertion part, and the finger or hand is more firmly attached to the insertion part. It is preferable because it can be sandwiched. In addition, when a finger or hand is inserted into the insertion part, the gap between the non-bonded part and the opposing surface (inner space of the cylindrical part) widens in the thickness direction and the gap between the joined parts narrows, causing the product to become loose in the hand. It deforms so that it curves to the side. Therefore, the end of the product is less likely to bend toward the wearer, making it easier to spread it on a bed or the like.

<Seventh aspect>
The back side portion has side flaps that extend further on both sides in the width direction than the absorbent body,
A patch sheet is laminated on the outer surface of the back side portion in a portion overlapping with the absorbent body,
The patch sheet has a joint part joined to an opposing surface on the inside thereof, and the joint part is arranged at each vertex of a polygon,
A portion other than the bonded portion is a non-bonded portion that is not bonded to the opposing surface,
the cylindrical portion is formed by the non-joining portion and the opposing surface;
The absorbent article according to any one of the second to fifth aspects.

(effect)
The insertion part can be constructed, for example, by providing a cut or a non-joint part in an existing member of the absorbent article, or by attaching an assembly assembled into a cylinder or bag shape using a sheet to the outer surface of the dorsal part. However, it is also preferable to construct it by adding a dedicated patch sheet as in this embodiment. In this case, by providing the joint part of the patch sheet in the part that overlaps with the absorbent body, the insertion part is less likely to deform when a finger or hand is inserted into the insertion part, and the finger or hand is more firmly attached to the insertion part. It is preferable because it can be sandwiched. In addition, when a finger or hand is inserted into the insertion part, the gap between the non-bonded part and the opposing surface (inner space of the cylindrical part) widens in the thickness direction and the gap between the joined parts narrows, causing the product to become loose in the hand. It deforms so that it curves to the side. Therefore, the end of the product is less likely to bend toward the wearer, making it easier to spread it on a bed or the like.
In particular, in the case of this embodiment, between the joints arranged to form each vertex of the polygon, that is, each side of the polygon formed by connecting the joints becomes the entrance of the cylindrical portion. Therefore, fingers or hands can be inserted from various directions with a very simple structure. For example, the angle of the hand or arm of the replacement worker can be maintained in a more natural direction, regardless of the replacement worker's standing position or handedness.

<Eighth aspect>
The average coefficient of friction MIU of the inner surface of the patch sheet is 0.1 to 0.2.
The absorbent article according to the sixth or seventh aspect.

(effect)
If the average coefficient of friction on the inner surface of the patch sheet is high, when an attempt is made to remove the finger or hand from the insertion part, the product may move with the finger or hand and shift, making it necessary to repeat the work. On the other hand, when the average friction coefficient of the inner surface of the patch sheet is low as in this embodiment, it becomes easier to remove the fingers or hand from the insertion portion without moving the product.

<Ninth aspect>
the average coefficient of friction MIU of the outer surface of the patch sheet is 0.2 to 0.3;
The absorbent article according to any one of the sixth to eighth aspects.

(effect)
It is preferable that the average coefficient of friction of the outer surface of the patch sheet is sufficiently high because friction with the surface of the bed or the like makes it difficult for the product to move together with the fingers or hand when attempting to remove the finger or hand from the insertion portion.

<Tenth aspect>
a front wing that protrudes on both left and right sides in front of the groin area;
a rear wing that protrudes on both left and right sides behind the groin area;
The rear wing is provided with a connecting portion that is detachably connected to the ventral side portion.
a connected absorbent article;
The absorbent article according to any one of the first to ninth aspects.

(effect)
A connected type absorbent article such as this embodiment is a product that is particularly difficult to place on a bed or the like. Therefore, the above-mentioned improvements to the insertion portion and the like are particularly meaningful when applied to a connected absorbent article such as the present embodiment.

According to the present invention, there are advantages such as making it easier for a replacement worker to place the product on a bed or the like.

FIG. 2 is a plan view showing the inner surface of the tape-type disposable diaper in a state where the diaper is unfolded. FIG. 2 is a plan view showing the outer surface of the tape-type disposable diaper in a state in which the diaper is unfolded. FIG. 2 is a sectional view taken along line 6-6 in FIG. 1; (a) 5-5 sectional view in FIG. 1, and (b) 7-7 sectional view in FIG. 1. (a) 8-8 sectional view of FIG. 1, and (b) 9-9 sectional view of FIG. 1. 3 is a sectional view taken along line 4-4 in FIG. 2. FIG. FIG. 3 is a plan view showing a state in which a finger is inserted into the insertion portion of the product. FIG. 3 is a side view showing the expanded state of the product with fingers inserted into the insertion portion. FIG. 2 is a perspective view showing a state in which the product is placed under the wearer's buttocks with a finger inserted into the insertion portion. FIG. 3 is a plan view showing a state in which fingers are pulled out from the insertion part of the product placed under the wearer's buttocks. They are (a) a top view of a patch sheet, and (b) a sectional view. FIG. 2 is a plan view showing the outer surface of the tape-type disposable diaper in a state in which the diaper is unfolded. FIG. 2 is a plan view showing the outer surface of the tape-type disposable diaper in a state in which the diaper is unfolded. FIG. 2 is a plan view showing the outer surface of the tape-type disposable diaper in a state in which the diaper is unfolded. FIG. 2 is a plan view showing the outer surface of the tape-type disposable diaper in a state in which the diaper is unfolded. FIG. 2 is a plan view showing the outer surface of the tape-type disposable diaper in a state in which the diaper is unfolded. FIG. 2 is a plan view showing the outer surface of the tape-type disposable diaper in a state in which the diaper is unfolded. FIG. 2 is a plan view showing the outer surface of the tape-type disposable diaper in a state in which the diaper is unfolded.

1 to 7 show an example of a tape-type disposable diaper, and the symbol X in the figures indicates the entire width of the diaper excluding the connecting tape, and the symbol L indicates the entire length of the diaper. Moreover, the dotted pattern portion in the cross-sectional view indicates a hot melt adhesive as a joining means for joining each component located on the front side and the back side. Hot melt adhesives can be applied by known methods such as slot coating, continuous line or dotted bead coating, spiral, Z-shaped, wavy, etc. spray coating, or pattern coating (transfer of hot melt adhesive using a letterpress method). It can be applied by any method. Alternatively or additionally, at the fixed portion of the elastic member, a hot melt adhesive can be applied to the outer circumferential surface of the elastic member to secure the elastic member to the adjacent member. Examples of hot melt adhesives include EVA adhesives, adhesive rubber adhesives (elastomer adhesives), olefin adhesives, and polyester/polyamide adhesives, which can be used without particular limitation. As a joining means for joining each component, means by material welding such as heat sealing or ultrasonic sealing can also be used.

Furthermore, as the nonwoven fabric in the following description, any known nonwoven fabric can be used as appropriate depending on the site and purpose. The constituent fibers of the nonwoven fabric include, for example, olefin-based fibers such as polyethylene or polypropylene, synthetic fibers such as polyester-based fibers, and polyamide-based fibers (including single-component fibers as well as composite fibers such as core-sheath fibers), as well as recycled fibers such as rayon and cupro. Fibers, natural fibers such as cotton, etc. can be selected without particular limitation, and a mixture of these can also be used. In order to increase the flexibility of the nonwoven fabric, it is preferable that the constituent fibers be crimped fibers. In addition, even if the constituent fibers of a nonwoven fabric are hydrophilic fibers (including hydrophilic fibers made hydrophilic by a hydrophilic agent), they may be hydrophobic fibers or water-repellent fibers (including hydrophilic fibers made hydrophilic by a water-repellent agent). (including aqueous fibers). In addition, nonwoven fabrics generally vary depending on the fiber length, sheet forming method, fiber binding method, and laminated structure. Non-woven fabrics, point-bonded non-woven fabrics, laminated non-woven fabrics (SSS non-woven fabrics, etc. in which the same or similar non-woven fabric layers are laminated, SMS non-woven fabrics in which different non-woven fabric layers are laminated, a melt-blown layer is sandwiched between spunbond layers, SMMS non-woven fabrics, etc.), etc. However, any of these nonwoven fabrics can be used. Laminated nonwoven fabric is manufactured as a single nonwoven fabric including all layers, and fiber bonding processing is applied to all the layers. Laminated nonwoven fabric is manufactured by bonding multiple nonwoven fabrics manufactured separately using a bonding method such as hot melt adhesive. Does not include combined items.

This tape type disposable diaper has a ventral side portion F extending forward from the center in the front-rear direction LD, and a back side portion B extending rearward from the center in the front-rear direction LD. In addition, the shape of this tape type disposable diaper has a crotch part M that extends from the front side of the center of the product in the front-rear direction to the rear side of the center of the product in the front-rear direction, and a crotch part M that extends to the front side of the center of the product in the front-rear direction. It has a front wing 80 that protrudes to both left and right sides at a position, and a rear wing 90 that protrudes to both left and right sides at a position away from the center of the product in the front-rear direction on the rear side. Furthermore, this tape type disposable diaper has an absorbent body 56 built into the area including the crotch area, a liquid-permeable top sheet 30 that covers the front side of the absorbent body 56, and a liquid-impermeable top sheet that covers the back side of the absorbent body 56. It has a sheet 11 and an exterior nonwoven fabric 12 that covers the back side of the liquid-impermeable sheet 11 and constitutes the outer surface of the product.

The materials and characteristic parts of each part will be explained in order below.
(Absorber)
The absorbent body 56 is a part that absorbs and retains excretory fluid, and can be formed from an aggregate of fibers. These fiber aggregates include those obtained by stacking short fibers such as cotton pulp and synthetic fibers, as well as filament aggregates obtained by opening tows (fiber bundles) of synthetic fibers such as cellulose acetate as necessary. can also be used. The fiber weight can be, for example, about 100 to 300 g/m ² when stacking cotton-like pulp or short fibers, and about 30 to 120 g/m ² in the case of filament aggregates. I can do it. The fineness of synthetic fibers is, for example, 1 to 16 dtex, preferably 1 to 10 dtex, and more preferably 1 to 5 dtex.

(Super absorbent polymer particles)
The absorbent body 56 can contain superabsorbent polymer particles in part or in whole. The term "superabsorbent polymer particles" includes "powder" in addition to "particles." As the superabsorbent polymer particles, those used in this type of absorbent article can be used as they are. The particle size of the superabsorbent polymer particles is not particularly limited, but for example, sieving using a 500 μm standard sieve (JIS Z8801-1:2006) (shaking for 5 minutes) and particles falling under the sieve during this sieving. When sieving (shaking for 5 minutes) using a 180 μm standard sieve (JIS Z8801-1:2006), the proportion of particles remaining on the 500 μm standard sieve is 30% by weight or less, and the 180 μm standard sieve It is desirable that the proportion of particles remaining on top is 60% by weight or more.

Although any material can be used for the superabsorbent polymer particles without particular limitation, those with a water absorption of 40 g/g or more are preferred. Superabsorbent polymer particles include starch-based, cellulose-based, and synthetic polymer-based particles, including starch-acrylic acid (salt) graft copolymers, saponified starch-acrylonitrile copolymers, and cross-linked sodium carboxymethyl cellulose. Materials such as acrylic acid (salt) and acrylic acid (salt) polymers can be used. The shape of the superabsorbent polymer particles is preferably a commonly used powder or granule, but other shapes can also be used.

As the superabsorbent polymer particles, those having a water absorption rate of 70 seconds or less, particularly 40 seconds or less are preferably used. If the water absorption rate is too slow, the liquid supplied into the absorbent body 56 tends to return to the outside of the absorbent body 56, which is called backflow.

Further, as the superabsorbent polymer particles, those having a gel strength of 1000 Pa or more are preferably used. Thereby, even when the absorbent body 56 is bulky, the sticky feeling after liquid absorption can be effectively suppressed.

The basis weight of the superabsorbent polymer particles can be determined as appropriate depending on the amount of absorption required for the use of the absorber 56. Therefore, although it cannot be generalized, it can be set at 50 to 350 g/m ² in normal cases.

(packaging sheet)
In order to prevent the superabsorbent polymer particles from slipping out or to improve the shape retention of the absorbent body 56, the absorbent body 56 can be incorporated as an absorbent element 50 wrapped in a packaging sheet 58. As the packaging sheet 58, tissue paper, especially crepe paper, nonwoven fabric, polylaminated nonwoven fabric, a sheet with small holes, etc. can be used. However, it is desirable that the sheet be a sheet that does not allow the superabsorbent polymer particles to escape. When a nonwoven fabric is used in place of crepe paper, a hydrophilic SMMS (spunbond/meltblown/meltblown/spunbond) nonwoven fabric is particularly suitable, and its material may be polypropylene, polyethylene/polypropylene, or the like. The fiber basis weight is preferably 5 to 40 g/m ² , particularly 10 to 30 g/m ² .

As shown in FIG. 3, this packaging sheet 58 may have a structure in which a single sheet wraps the entire absorbent core 56, or a plurality of sheets, such as two upper and lower sheets, can wrap the entire absorbent core 56. The packaging sheet 58 can also be omitted.

(Top sheet)
The top sheet 30 has liquid permeability, and can be made of, for example, a perforated or non-perforated nonwoven fabric, a porous plastic sheet, or the like.

The top sheet 30 extends from the front end of the product to the rear end in the front-rear direction, and extends laterally than the absorbent body 56 in the width direction WD. When the top sheet 30 is located on the center side in the width direction, appropriate modifications such as making the width of the top sheet 30 shorter than the full width of the absorbent core 56 can be made as necessary.

(intermediate sheet)
In order to quickly transfer the liquid that has permeated through the top sheet 30 to the absorbent body, an intermediate sheet (also called a "second sheet") 40, which has a higher liquid permeation rate than the top sheet 30, can be provided. This intermediate sheet 40 is for quickly transferring the liquid to the absorbent body, improving the absorption performance of the absorbent body, and preventing the phenomenon of “returning” of the absorbed liquid from the absorbent body. The intermediate sheet 40 can also be omitted.

As the intermediate sheet 40, a liquid-permeable sheet such as a nonwoven fabric can be used. As the intermediate sheet 40, an air-through nonwoven fabric is particularly preferable because it is bulky. It is preferable to use a composite fiber with a core-sheath structure for the air-through nonwoven fabric. In this case, the resin used for the core may be polypropylene (PP), but polyester (PET) with high rigidity is preferable. The basis weight is preferably 17 to 80 g/m ² , more preferably 25 to 60 g/m ² . The thickness of the raw material fibers of the nonwoven fabric is preferably 2.0 to 10 dtex. In order to make the nonwoven fabric bulky, it is also preferable to use eccentric fibers whose core is not in the center, hollow fibers, or eccentric and hollow fibers as the mixed fibers for all or part of the raw material fibers.

Although the intermediate sheet 40 in the illustrated example is shorter than the width of the absorber 56 and is arranged at the center, it may be provided over the entire width. Further, the intermediate sheet 40 may be provided over the entire length of the diaper, but may be provided only in the intermediate portion in the front-rear direction LD including the excretion position as shown in the illustrated example.

(liquid impermeable sheet)
The liquid-impermeable sheet 11 is not particularly limited, but preferably has moisture permeability. The liquid-impermeable sheet 11 is, for example, a microporous sheet obtained by kneading an inorganic filler into an olefin resin such as polyethylene or polypropylene, molding the sheet, and then stretching the sheet in uniaxial or biaxial directions. A sheet can be suitably used. Further, as the liquid-impermeable sheet 11, a sheet made of non-woven fabric as a base material with improved waterproofness can also be used.

It is desirable that the liquid-impermeable sheet 11 extends over the same or wider area as the absorber 56 in the front-rear direction LD and width direction WD, but if necessary, such as when other water-blocking means are present, It is also possible to have a structure in which the ends of the absorber 56 are not covered in the front-rear direction LD and the width direction WD.

(Exterior nonwoven fabric)
The exterior nonwoven fabric 12 covers the entire back side of the liquid-impermeable sheet 11 and gives the outer surface of the product a cloth-like appearance. The fiber basis weight of the exterior nonwoven fabric 12 is preferably 10 to 50 g/m ² , particularly 15 to 30 g/m ² , but is not limited thereto.

(get up and gather)
In order to prevent excrement from moving laterally on the top sheet 30 and to prevent so-called lateral leakage, riser gathers 60 are provided on both sides of the front surface in the width direction WD to stand up toward the skin of the wearer. It is preferable if Of course, the rising gathers 60 can also be omitted.

When employing the rising gathers 60, the structure is not particularly limited, and any known structure may be employed. The rising gathers 60 in the illustrated example includes a gather sheet 62 that is substantially continuous in the width direction WD, and an elongated gather elastic member 63 that is fixed to the gather sheet 62 in an extended state along the front-rear direction LD. ing. A water-repellent nonwoven fabric can be used as the gather sheet 62, and a rubber thread or the like can be used as the gather elastic member 63. A plurality of elastic members may be provided as shown in FIGS. 1 and 2, or one elastic member may be provided.

The inner surface of the gather sheet 62 has a joining start end in the width direction WD on the side of the top sheet 30, and the outer part in the width direction from this joining start end is the inner surface of each side flap SF, that is, in the illustrated example, it is liquid impermeable. It is bonded to the sides of the flexible sheet 11 and the sides of the exterior nonwoven fabric 12 located on the outside in the width direction using a hot melt adhesive or the like.

Around the legs, the center side in the width direction from the joining start end of the rising gathers 60 is fixed to the top sheet 30 at both ends in the front and back direction of the product, but the part between them is an unfixed free part, and this free part The portion rises due to the contraction force of the elastic member 63 and comes into close contact with the body surface.

(end flap, side flap)
The tape type disposable diaper of the illustrated example has a pair of end flaps EF that do not have an absorbent body 56 and extend to the front and rear sides of the absorbent body 56, respectively, and a pair of end flaps EF that extend to the front side and the rear side of the absorbent body 56, respectively. It has a pair of side flaps SF that extend and do not have an absorbent body 56. The side flap SF may be made of a main body sheet (exterior nonwoven fabric 12, etc.) continuous from the portion having the absorbent body 56, as shown in the illustrated example, or may be formed by attaching other materials.

(Plane gather)
A side elastic member 64 made of a slender elastic member such as a thread rubber is fixed to each side flap SF in an extended state along the front-rear direction LD, so that the leg surrounding portion of each side flap SF is flat. It is configured as a gather. As shown in the illustrated example, the side elastic member 64 is provided between the gather sheet 62 and the liquid-impermeable sheet 11 on the outer side in the width direction near the joining start end of the joint portion of the gather sheet 62, and is also provided on the side flap SF. It can also be provided between the liquid-impermeable sheet 11 and the exterior nonwoven fabric 12 in . In addition to providing a plurality of side elastic members 64 on each side as shown in the illustrated example, only one side elastic member 64 may be provided on each side.

The plane gathers are the portions on which the contractile force of the side elastic members 64 acts (the portions where the side elastic members 64 are illustrated in the figure). Therefore, in addition to the form in which the side elastic members 64 are present only in the plane gathers region, the side elastic members 64 are present in front of, behind, or on both sides of the plane gathers, but the side elastic members 64 are present only in the plane gathers region. If the member is cut into pieces at one or multiple locations, or is not fixed to the sheet sandwiching the side elastic members 64, or both, the contractile force may not be applied to the parts other than the plane gathers. It also includes a structure in which the contractile force of the side elastic members 64 acts only on the plane gathers (which is essentially equivalent to not providing an elastic member).

(front wing)
This tape type disposable diaper has front wings 80 that protrude on both left and right sides at a position farther forward than the center in the front-rear direction of the product. The front wing can also be omitted (i.e., the width does not change from the narrowest part of the product to the front end of the product).

The width direction WD dimension of the front wing 80 can be determined as appropriate, and can be set to, for example, 5 to 20% (particularly 7 to 15%) of the total length L of the article. The width direction WD dimension of the front wing 80 can be made approximately the same as the width direction WD dimension of the rear wing 90, which will be described later.

(rear wing)
This tape type disposable diaper has rear wings 90 that protrude on both left and right sides at a position away from the center of the product in the front-rear direction.

The dimension of the rear wing 90 in the width direction WD can be determined as appropriate, and in addition to being the same as the dimension of the front wing 80 in the width direction, it can also be made smaller or larger than the dimension of the front wing 80 in the width direction.

(middle part)
Both side edges 15 of the product between the front wing 80 and the rear wing 90 are, for example, centered on a direction in which the acute angle side intersecting angle with respect to the front-rear direction LD is less than ±2 degrees, and ±5 mm in a direction orthogonal to the center. can have a substantially straight section passing through a width range of . Both side edges 15 of the product between the front wing 80 and the rear wing 90 may be wavy or arcuate (not shown), or may be straight as in the illustrated example.

(Formation of wings)
As shown in the illustrated example, by cutting the side part of the side flap SF into a concave shape, the rear wing is passed from the lower edge of the front wing 80 through both side edges 15 of the product between the front wing 80 and the rear wing 90. The entire concave edge up to the lower edge of 90 can be formed. In this case, the laminated structure of the front wing 80 and the rear wing 90 is determined by the laminated structure of the side flap SF, and in the illustrated example, the front wing 80 and the rear wing 90 are formed by the gather sheet 62 and the exterior nonwoven fabric 12. Although not shown, a front extension sheet may be provided that projects laterally from the side flap SF, and the entire front wing 80 or a portion of the front end side may be formed of the front extension sheet. Similarly, a rear extension sheet may be provided that protrudes laterally from the side flap SF, and the entire rear wing 90 or a portion of the front end side may be formed of the rear extension sheet. Various nonwoven fabrics can be used as the front extension sheet and the rear extension sheet, and in particular, spunbond nonwoven fabric, air-through nonwoven fabric, or spun fabric with a fineness of 1.0 to 3.5 dtex, a basis weight of 60 to 100 g/m ² , and a thickness of 1 mm or less. Preferably, a non-woven lace fabric is used.

(Connection part)
The rear wing 90 includes a connecting portion 13A that is detachably connected to the ventral portion F when worn. That is, when worn, both sides of the rear wing 90 are brought to the wearer's ventral side, and the connecting portion 13A of the rear wing 90 is coupled to the outer surface of the ventral portion F. As the connecting portion 13A, in addition to providing a hook material (male material) of a mechanical fastener (surface fastener), an adhesive layer may be provided. The hook material has a large number of engagement protrusions on its connecting surface, and the shapes of the engagement protrusions include a V-shape, a J-shape, a mushroom-shape, a T-shape, and a double J-shape (J-shape). Any known shape can be adopted, such as a shape in which two parts are connected back to back).

The connecting portion 13A can be directly attached to the rear wing 90, or, as shown in the illustrated example, the connecting tape 13 having the connecting portion 13A can be attached to the rear wing 90. Although the structure of the connecting tape 13 is not particularly limited, in the illustrated example, the tape attachment portion 13C fixed to the side flap SF, the tape body portion 13B protruding from the tape attachment portion 13C, and the width direction of the tape body portion 13B. It has a connecting part 13A provided at the middle part of the WD, and the tip side of the connecting part 13A is a knob part. As the sheet material forming the tape attachment part 13C to the tape main body part 13B, nonwoven fabric, plastic film, polylaminated nonwoven fabric, paper, or composite materials thereof can be used.

The connecting point of the connecting portion 13A on the outer surface of the ventral portion F can be determined as appropriate, and the connecting point may be only the main body located between the left and right front wings 80, or The range from the side part to the base end side of the front wing 80 may be used as the connection point. It is preferable that these connecting points are such that the connecting portion 13A can be easily connected. For example, when the connecting portion 13A is a hook material (male material) of a mechanical fastener (velcro fastener), the connecting portion on the outer surface of the ventral portion F may be formed of a loop material (female material) of the mechanical fastener or a nonwoven fabric. As a loop material, one in which a loop thread is sewn onto a plastic film is also known, but long-fiber nonwoven fabric (fineness 2.0 to 4.0 dtex, basis weight 20 to 50 g/m ² , a spunbond nonwoven fabric with a thickness of about 0.3 to 0.5 mm) with welded parts intermittently welding fibers together at least in the width direction WD is preferable from the viewpoint of air permeability and flexibility. When the region including the connection point on the outer surface of the ventral portion F is formed of the exterior nonwoven fabric 12 as in the illustrated example, the hook material can be connected to the exterior nonwoven fabric 12 without adding anything. If necessary, the loop material may be attached only to the connecting portions on the outer surface of the ventral portion F. Further, when the connecting portion 13A is an adhesive layer, a highly adhesive plastic film with a smooth surface may be attached to the connecting portion on the outer surface of the ventral portion F.

(insertion part)
As shown in FIGS. 2, 6, and 7, an insertion portion 20 having an insertion port 20i is provided on the outer surface of the dorsal portion B, and the insertion portion 20 is a flat cylindrical portion that communicates with the insertion port 20i. 21, and the finger 101 of one hand 100 (it may be only a part of the finger 101 or the entire hand 100) is inserted into the cylindrical portion 21 along the outer surface of the product through the insertion opening 20i. Preferably, the device is configured to be inserted into the device. The entrance 21i of the cylindrical portion 21 (the edge on the entrance side of the outer wall xw of the inner wall iw and outer wall xw that constitute the cylindrical portion 21) intersects with the width direction WD at an angle θ of 30 to 90 degrees. By extending in the first direction, it is preferable that the insertion direction 20d of the finger 101 is a second direction orthogonal to the first direction. The angle θ of the first direction with respect to the width direction WD is more preferably 45 to 90 degrees, particularly preferably 60 to 90 degrees. The insertion direction 20d of the insertion portion 20 may be one direction as in the examples shown in FIGS. 2 and 12, or may be in multiple directions as in the examples shown in FIGS. 13 to 17. As long as the insertion portion 20 has the inlet 21i of the cylindrical portion 21 extending in the first direction, the cylindrical portion 21 extending in a direction other than the first direction (such as the width direction WD) as in the examples shown in FIGS. It may have an entrance 21i.

Further, when the insertion direction 20d is one direction or two opposing directions, a plurality of cylindrical portions 21 may be provided at intervals in the insertion direction 20d, as in the example shown in FIG. When the insertion directions 20d are a plurality of directions that do not oppose each other (directions that intersect with each other), one cylindrical portion 21 can be provided for each insertion direction 20d, as shown in FIGS. 14 to 17.

The tape type disposable diaper having these insertion portions 20 can be placed under the wearer 200 and worn as follows. That is, as shown in FIG. 7, first, insert the finger 101 of one hand 100 into the insertion part 20 with the inner surface of the hand 100 facing the outer surface of the product 1, and fit the dorsal part B of the product 1 onto the finger 101. . If the product 1 is folded in the front-rear direction LD, then (or before fitting the insertion portion 20 onto the finger 101), the product 1 is unfolded along the hand 100 as shown in FIG. In this state, as shown in FIG. 9, the product 1 is placed on a bed or the like with the back of the hand 100 facing downward, and the wearer's 200 buttocks are placed on it. At this time, since the product 1 and the hand 100 are integrated, the position on which the buttocks are placed can be finely adjusted by simply adjusting the position of the hand 100. Reference numeral 102 in the figure indicates an arm 102. Thereafter, by removing the finger 101 from the insertion portion 20 of the product 1, the product 1 can be easily and accurately placed under the buttocks of the wearer 200, as shown in FIG. In the case of a tape-type disposable diaper, the connecting portion 13A of the rear wing 90 is then connected to the outer surface of the ventral portion F as described above.

In this way, in this tape type disposable diaper, by fitting the dorsal part B of the product 1 onto the fingers 101 of one hand 100, the product 1 can be firmly held with the one hand 100. The task of lifting the buttocks by holding the diaper with the hand 100 and placing the tape-type disposable diaper under the buttocks with the other hand 100 becomes very easy. In addition, replacement work becomes easier even under dim conditions such as at night. Note that when removing the finger 101 from the insertion section 20 of the product 1, a part of the buttocks of the wearer 200 is placed on the part of the product 1 that does not overlap with the hand 100 (this may be done before the buttocks are placed, or By doing so, the product 1 is less likely to shift and the fingers 101 can be easily removed from the insertion portion 20.

Further, in this tape type disposable diaper, the entrance 21i of the tubular portion 21 extends along the first direction intersecting the width direction WD at an angle θ of 30 to 90 degrees, and is perpendicular to the first direction. Since the second direction is the insertion direction, when inserting either the left or right finger 101 or hand 100 from the side of the product 1, the hand 100 or arm 102 is oriented in a more natural direction. Therefore, even when putting the hand 100 in from the side of the wearer 200 and placing the product 1 under the buttocks, such as during replacement work in an incubator, the product 1 is placed on the finger 101 or the hand 100. You can work with ease.

The first direction and the second direction depend on whether the hand 100 (usually the dominant hand 100) of the changing worker puts the diaper in the diaper during work, and whether the changing worker stands on the left or right side of the wearer 200 when changing the diaper. It can be determined as appropriate. For example, as follows. Note that "left" and "right" below are based on the wearer 200.
(A) As shown in FIGS. 2, 7, and 15 to 17, insert the insertion portion 20 in which the insertion direction 20d (second direction) is diagonally backward to the left of the dorsal portion B (the first direction is diagonally backward to the right). If the wearer 200 has the diaper in the supine position, it is suitable for the person changing the diaper to wear the tape type disposable diaper on the right hand and stand on the right side of the wearer 200 who is in the supine position.
(B) As shown in FIGS. 12 and 15 to 17, when the insertion direction 20d (second direction) is diagonally backward to the right of the dorsal portion B (the first direction is diagonally backward to the left), It is suitable for a worker changing the diaper to wear this tape-type disposable diaper on his left hand and stand on the left side of the wearer 200 who is in the supine position.
(C) As shown in FIG. 15, when the insertion direction 20d (second direction) has the insertion portion 20 of the dorsal portion B diagonally forward to the left (the first direction is diagonally forward to the right), the replacement operator can This tape type disposable diaper is suitable for working while standing on the right side of the wearer 200 who is in a supine position.
(D) As shown in FIG. 15, when the insertion direction 20d (second direction) has the insertion portion 20 of the dorsal portion B diagonally forward to the right (the first direction is diagonally forward to the left), the replacement operator can This tape type disposable diaper is suitable for working while standing on the left side of the wearer 200 who is in a supine position.
(E) As shown in FIGS. 13 and 14, when the insertion direction 20d (second direction) has the insertion portion 20 facing to the left, the replacement worker puts the present tape-type disposable diaper on the left or right hand and lies in a supine position. It is suitable for working while standing on the right side of the wearer 200.
(F) As shown in FIGS. 13 and 14, when the insertion direction 20d (second direction) has the insertion part 20 facing to the right, the replacement worker wears this tape-type disposable diaper on his left or right hand and lies in a supine position. It is suitable for working while standing on the left side of the wearer 200.

In particular, it is preferable to have the insertion portions 20 of both (A) and (B) above, both of (C) and (D) above, or both of (E) and (F) above, as shown in the illustrated example. In other words, as shown in FIGS. 13 to 17, if the insertion openings 20i are provided on one side and the other side of the dorsal portion B in the width direction WD, the insertion openings 20i can be inserted under the buttocks from either the left or right of the wearer 200. Even when the product 1 is laid down, the angle of either the right or left hand 100 or arm 102 of the replacement worker can be maintained in a more natural direction, which is preferable.

Further, it is preferable that a plurality of adjacent fingers 101 or hands 100 can be inserted across the cylindrical portion 21 from the insertion opening 20i. Thereby, when the product 1 is worn on the finger 101, a wide range of the dorsal side portion B can be supported by the hand 100 while expanding the dorsal side portion B in the width direction WD. Therefore, the above-mentioned mounting operation becomes easier.

The position of the entrance 21i of the cylindrical portion 21 can be determined as appropriate, but when the dimension of the back side portion B in the front-rear direction LD is LB, the center of the back side portion B in the front-rear direction LD and the center of the width direction WD is If the inlet 21i of the cylindrical portion 21 is located within a region A with a center radius R of 0.8×LB, when the product 1 is placed on the hand 100, the front-rear direction LD of the dorsal portion B A wide range of objects can be supported with the hand 100 in a well-balanced manner. Therefore, the above-mentioned mounting operation becomes easier. In addition, when a plurality of cylindrical parts exist in the front-rear direction LD, etc., the entrance of the cylindrical part means the entrance of the cylindrical part located at the frontmost side.

The dimension X1 of the cylindrical portion 21 in the direction perpendicular to the insertion direction 20d (width direction WD in the illustrated example) may be constant in the insertion direction 20d or may vary. As shown in FIG. 13, when a plurality of cylindrical portions 21 are provided at intervals in the insertion direction 20d, the dimension X1 of each cylindrical portion 21 in the direction orthogonal to the insertion direction 20d may be the same. It's okay and it can be different. As shown in FIGS. 15 to 17, even when a plurality of cylindrical portions 21 with different insertion directions 20d are provided, the dimension X1 of each cylindrical portion 21 in the direction perpendicular to the insertion direction 20d is the same. may be or may be different.

An example of the dimensions of the cylindrical portion 21 is as follows. That is, the dimension X1 of the cylindrical portion 21 in the first direction (direction perpendicular to the insertion direction 20d) is preferably 60 to 90 mm. Further, the dimension Y1 of the cylindrical portion 21 in the second direction (insertion direction 20d) is preferably 20 to 80 mm. Note that the dimension of the cylindrical portion 21 in the direction orthogonal to the insertion direction 20d means the minimum value if it is not constant. In addition, the dimension in the insertion direction of the cylindrical portion 21 refers to the inlet of the cylindrical portion located on the most inlet side and the dimension of the cylindrical portion located on the most exit side when there are multiple cylindrical portions in the insertion direction 20d etc. This means the distance in the insertion direction from the outlet of the shaped portion (see FIG. 13). These dimensions X1 and Y1 mean the minimum value when a plurality of insertion directions 20d exist. If it is within this range, the cylindrical portion 21 will fit the fingers when multiple fingers are inserted, so there is an advantage that the product 1 can be supported more widely and more freely. . In particular, when the cylindrical portion 21 is configured to fit the fingers when the index finger, middle finger, and ring finger or the four fingers from the index finger to the little finger are inserted into the cylindrical portion 21, the dorsal portion B This is preferable because it is possible to support a wide range of the dorsal portion B with the hand 100 while expanding it in the width direction WD. Further, since the dimension of the cylindrical portion 21 in the insertion direction 20d is sufficiently long, it becomes easy to spread the dorsal portion B to fit the shape of the hand 100, and it becomes easy to maintain a wide range flat in the front-rear direction LD, for example. In particular, when the finger 101 or the hand 100 is inserted into the cylindrical portion 21, it is preferable that the finger 101 can be inserted up to the base thereof.

The insertion part 20 can be made, for example, by providing a cut or a non-joining part 24 in an existing member of a tape-type disposable diaper, or by attaching an assembly assembled into a flat tube shape or a flat bag shape using a sheet to the outer surface of the back part B. Although it can be constructed by attaching a patch sheet 22, it is also preferable to construct it by adding a dedicated patch sheet 22 to the outer surface of the back side portion B as shown in the illustrated example. That is, in the examples shown in FIGS. 2, 12, and 13, a band-shaped patch sheet 22 extending in the first direction is laminated on a portion of the outer surface of the back side portion B that overlaps with the absorbent body 56, and the patch sheet Both end portions in the longitudinal direction of the patch sheet 22 have a joint portion 23 joined to an opposing surface (in the illustrated example, the outer surface of the exterior sheet) facing each other on the inside thereof, and a joint portion 23 on one side of the patch sheet 22 in the longitudinal direction The part between the joint part 23 on the other side is a non-joint part 24 that is not joined to the opposing surface, and the cylindrical part 21 is formed by the non-joint part 24 (outer wall xw) and the opposing surface (iw). It is formed. In this case, when the finger 101 is inserted into the insertion portion 20, the gap between the non-joint part 24 and the opposing surface (inner space of the cylindrical part 21) widens and the interval between the joint parts 23 narrows, as shown in FIG. The product 1 is deformed so as to be warped toward the hand 100 as shown in FIG. Therefore, the end of the product 1 is less likely to bend toward the wearer 200, making it easier to place it on a bed or the like. In particular, if the joint portion 23 of the patch sheet 22 is provided in a portion that overlaps with the absorbent body 56 as shown in the illustrated example, when the finger 101 or the hand 100 is inserted into the insertion portion 20, the insertion portion 20 may be deformed. This is preferable because the fingers 101 or the hand 100 can be more securely caught in the insertion portion 20.

Further, as in the example shown in FIG. 13, when the band-shaped patch sheet 22 extending in the front-rear direction LD is provided at the center in the width direction WD, and the non-joint portions 24 are provided up to both ends in the width direction WD, the width Insertion ports 20i are provided on one side and the other side in direction WD, respectively. Therefore, regardless of whether the product 1 is placed under the buttocks of the wearer 200 from the left or right, the angle of the replacement worker's hand 100 or arm 102 can be maintained in a more natural orientation.

When the angle of the first direction with respect to the width direction WD is less than 90 degrees, the belt-shaped sheet may be arranged at an angle, as shown in FIGS. 2 and 12. However, in this case, unless the operator is ambidextrous, the device cannot be easily inserted from either the left or right side of the wearer 200. Therefore, as shown in FIGS. 14 to 17, it is also preferable to arrange the joints 23 of the patch sheet 22 so as to form each vertex of a polygon, and to make the parts other than the joints 23 non-joint parts 24. In this case, between the joints 23 arranged to form each vertex of the polygon, that is, each side of the polygon formed by connecting the joints 23 becomes the entrance 21i of the cylindrical portion 21, respectively. Therefore, with a very simple structure, fingers 101 or hand 100 can be inserted from various directions as described above. For example, the angle of the hand 100 or arm 102 of the replacement worker can be maintained in a more natural orientation, regardless of the replacement worker's standing position or 100-degree difference in handedness. The joint portion 23 is a square shape in FIG. 14 having sides along the front-rear direction LD and width direction WD, a regular triangle shape in FIGS. 16 and 17 having sides along the width direction WD, and a vertex of a regular hexagon in FIG. 15. However, the arrangement is not limited to this.

When forming the insertion portion 20 using the patch sheet 22, the joint portion 23 between the patch sheet 22 and the opposing surface may be provided up to the edge of the patch sheet 22, but may be spaced apart from the edge of the patch sheet 22. Good too. Although the distance between the joint portion 23 and the edge of the patch sheet 22 in the insertion direction 20d can be determined as appropriate, it is usually preferable to set it to about 1 to 5 mm because the excess portion is reduced. In the former case, although not shown, the space between the edge of the patch sheet 22 on the insertion side and the portion facing inside thereof not only serves as the insertion opening 20i but also serves as the entrance 21i of the cylindrical portion 21. In the latter case, as shown in the illustrated example, the entrance 21i of the cylindrical portion 21 is between the joint portions 23 located closest to the insertion side. As in the examples shown in FIGS. 2, 12 to 16, and 18, the inlet 21i of the cylindrical portion 21 preferably extends parallel to the edge of the patch sheet 22, but as in the example shown in FIG. They may be parallel.

The dimensions of the patch sheet 22 are not particularly limited as long as they are equal to or larger than the aforementioned dimensions of the insertion section 20. Furthermore, in the examples shown in FIGS. 14 to 16, the shape of the patch sheet 22 is polygonal, such as a strip (rectangular), triangular, or hexagonal, in accordance with the arrangement of the joints 23. Regardless of the arrangement, non-geometric shapes such as a heart shape (see FIG. 17), star shape, cloud shape, etc. can also be used.

The width of the cylindrical portion 21 is determined by the interval between the joined portions 23 or the dimension of the non-joined portions 24 in the direction perpendicular to the insertion direction 20d. Although the dimensions of the joint 23 can be determined as appropriate, it is preferable that the dimension of the joint 23 in the direction perpendicular to the insertion direction 20d is 1 to 5 mm. Further, the dimension of the joint portion 23 in the insertion direction 20d (total dimension when a plurality of joint portions 23 are provided at intervals in the insertion direction 20d) is 0.3 to 1.0 times the dimension of the patch sheet 22 in the insertion direction 20d. It can be done to a certain extent. The joint 23 between the patch sheet 22 and the opposing surface can be formed by welding at least one of the patch sheet 22 and the opposing surface, or by using an adhesive such as a hot melt adhesive.

As shown in FIG. 2, only one joint 23 between the patch sheet 22 and the opposing surface is provided continuously in the insertion direction 20d on both sides of the insertion portion 20 in the direction perpendicular to the insertion direction 20d. As shown in the figure, a plurality of them can be provided at intervals in the insertion direction 20d. In the former case, only one cylindrical portion 21 covering almost the entire patch sheet 22 is formed, and in the latter case, a plurality of cylindrical portions 21 are formed at intervals in the insertion direction 20d, and for each cylindrical portion 21. (In other words, a substantially single cylindrical portion 21 is formed). Further, as shown in the illustrated example, the joint part 23 between the patch sheet 22 and the opposing surface is not provided on the side opposite to the insertion side of the patch sheet 22, and the finger 101 is structured to penetrate to the side opposite to the insertion side of the insertion section 20. In addition, as shown in FIG. 18, a joint 23 between the patch sheet 22 and the opposing surface is provided at the end (rear end in the illustrated example) of the patch sheet 22 in the insertion direction 20d, and a pocket-shaped or bag-shaped It can also be an insertion section 20.

The material of the patch sheet 22 is not particularly limited, and in addition to non-stretchable materials such as non-woven fabrics, materials that can be elastically stretched by themselves such as elastic films and stretchable non-woven fabrics may also be used. As the nonwoven fabric, spunbond nonwoven fabric having a weight of about 30 to 60 g/m ² can be suitably used.

When forming the insertion part 20 using the patch sheet 22, as shown in FIG. This is preferable because the extensible portion 75 expands when the finger 101 or the like is inserted into the portion 20 and fits the finger 101 or the hand 100 well. Further, by spreading the fingers inserted into the insertion section 20, the width of the insertion section 20 can be increased, and the product 1 can be supported over a wider range.

The patch sheet 22 having such stretchable parts can be realized by using an elastic film as the material for the patch sheet 22, but as shown in FIG. A state in which an elastic member 72 in the form of a perforated sheet, a net, a slender shape (thread-like, string-like, etc.), etc., is stretched along the first direction between both support sheet layers 71 while being bonded together using an adhesive such as an adhesive. It is also possible to use one fixed with . The material of the support sheet layer 71 in this case is not particularly limited, but it is preferably a nonwoven fabric with a fineness of 1.6 to 6.0 dtex, a basis weight of 10 to 30 g/m ² and a thickness of 0.1 to 1.3 mm. . The elongation rate of the elastic member 72 is preferably about 150 to 250%. Further, when using an elongated elastic member 72 (thread-like, string-like, etc.), it is preferable to provide about 5 to 15 elastic members with a thickness of 420 to 1120 dtex at intervals of 3 to 10 mm.

Both ends of the patch sheet 22 containing the elastic member 72 in the stretch direction may be non-stretchable parts 76 in order to be held and attached by suction during manufacturing. The dimensions of the non-stretchable portion 76 are preferably greater than or equal to the dimensions of the joint portion 23, but are not limited thereto. Further, the dimensions of the stretchable portion 75 located between the non-stretchable portions 76 may be appropriately determined in consideration of the dimensions of the insertion port 20i and the insertion portion 20. The non-stretchable part 76 may be a region without the elastic member 72, but the non-stretchable part 76 may be formed by attaching the elastic member 72 across the stretchable part 75 and the non-stretchable part 76 and cutting the elastic member 72 in the non-stretchable part 76. The elastic member 72 may remain in the elastic member 76, but may have a structure in which the elastic member 72 hardly or not expands or contracts at all.

In addition, when attaching the patch sheet 22 having the elastic part 75 to the outer surface of the back side part B, if it is attached with the elastic part 75 in an expanded state, the tape type disposable diaper will contract in the direction of expansion and contraction of the elastic part 75 in the attached state. This may lead to leakage or poor wearing comfort. Therefore, when the patch sheet 22 having the stretchable portion 75 is attached to the outer surface of the back side portion B, the elongation rate in the stretch direction is preferably 110% or less.

If the average coefficient of friction on the inner surface of the patch sheet 22 is high, when an attempt is made to remove the finger 101 or hand 100 from the insertion portion 20, the product 1 will move and shift together with the finger 101 or hand 100, making it necessary to repeat the work. There is a risk that this may occur. On the other hand, if the average friction coefficient MIU of the inner surface of the patch sheet 22 is 0.1 to 0.2 (sufficiently low), it is easy to remove the finger 101 or the hand 100 from the insertion part 20 without moving the product 1. Therefore, it is preferable. It is preferable that the average coefficient of friction MIU of the opposing surface of the patch sheet 22 is also within the same range.

Furthermore, if the average coefficient of friction MIU of the outer surface of the patch sheet 22 is 0.2 to 0.3 (sufficiently high), the finger 101 or the hand 100 may be pulled out from the insertion portion 20 due to friction with the surface of the bed or the like. This is preferable because the product 1 becomes difficult to move together with the fingers 101 or the hand 100. Note that the average coefficient of friction on the outer surface of the patch sheet 22 is particularly preferably 1.5 to 2.5 times the average coefficient of friction on the inner surface of the patch sheet 22, but is not limited thereto.

<Explanation of terms in the specification>
The following terms in the specification have the following meanings unless otherwise specified in the specification.
・"Anteroposterior direction" means the direction indicated by the symbol LD in the figure (vertical direction), and "width direction" means the direction indicated by WD in the figure (horizontal direction), and the longitudinal direction and the width direction are orthogonal.

・"Inside" means the side closest to the wearer's skin (front side) when the device is worn, and "outside" means the side that is closest to the wearer's skin (front side) if no direction is specified. means the side farthest from the wearer's skin (back side) when worn.

- "Inner surface" means the surface of the member that is closer to the wearer's skin when it is worn, and "outer surface" means the surface that is farther from the wearer's skin when it is worn.

- "Unfolded state" means a state in which it is flattened without shrinkage or slack.

- "Elongation rate" means a value when the natural length is 100%. For example, an extension ratio of 200% is synonymous with an extension ratio of 2 times. For example, an extension ratio of 200% is synonymous with an extension ratio of 2 times.

- "Gel strength" is measured as follows. Artificial urine (urea: 2 wt%, sodium chloride: 0.8 wt%, calcium chloride dihydrate: 0.03 wt%, magnesium sulfate heptahydrate: 0.08 wt%, and ion exchange water: 97.09 wt%) Add 1.0 g of superabsorbent polymer to 49.0 g and stir with a stirrer. The generated gel was left in a constant temperature and humidity chamber at 40° C. x 60% RH for 3 hours, then returned to room temperature, and the gel strength was measured using a card meter (Curdmeter-MAX ME-500, manufactured by I.techno Engineering).

・“Basic weight” is measured as follows. After pre-drying the sample or test piece, it is left in a test room or apparatus under standard conditions (test location: temperature 23±1°C, relative humidity 50±2%) to reach a constant weight. Pre-drying refers to making the sample or test piece constant weight in an environment at a temperature of 100°C. Note that fibers with an official moisture content of 0.0% do not need to be pre-dried. From the test piece that has reached a constant weight, use a sample sampling template (100 mm x 100 mm) to cut out a sample with dimensions of 100 mm x 100 mm. Measure the weight of the sample, multiply by 100 to calculate the weight per square meter, and use it as the basis weight.

- "Thickness" is automatically measured using an automatic thickness measuring device (KES-G5 Handy Compression Tester) under the conditions of load: 0.098 N/cm ² and pressurized area: 2 cm ² .

- "Average coefficient of friction MIU" means a value measured using a friction feel tester KES-SE (10 mm square piano wire sensor) manufactured by Kato Tech Co., Ltd.

- "Water absorption" is measured according to JIS K7223-1996 "Water absorption test method for super absorbent resin".

・"Water absorption rate" is "time to end point" when JIS K7224-1996 "Water absorption rate test method for super absorbent resin" is performed using 2 g of super absorbent polymer and 50 g of physiological saline. shall be.

- If there is no description of the environmental conditions for the test or measurement, the test or measurement shall be conducted in a test room or equipment under standard conditions (test location: temperature 23 ± 1°C, relative humidity 50 ± 2%). do.

- Unless otherwise specified, the dimensions of each part refer to the dimensions in the unfolded state, not in the natural length state.

The present invention can be applied to absorbent articles that can be placed under the wearer's buttocks, and can be applied to, for example, in addition to the above-mentioned connecting type (tape type disposable diaper), pad type disposable diapers, etc. It can also be applied to

B...dorsal part, EF...end flap, F...ventral part, L...full length, LD...anterior direction, M...crotch part, SF...side flap, WD...width direction, 1...product, 11...liquid impermeability adhesive sheet, 12... Exterior nonwoven fabric, 13... Connecting tape, 13A... Connecting portion, 15... Side edge, 20... Insertion portion, 20d... Insertion direction, 20i... Insertion opening, 21... Cylindrical portion, 21i... Inlet, 22... Patch sheet, 23... Joined part, 24... Non-joined part, 30... Top sheet, 40... Intermediate sheet, 50... Absorbent element, 56... Absorber, 58... Packaging sheet, 60... Rising gathers, 62... Gathered sheet, 64 ...Side elastic member, 75...Elastic part, 80...Front wing, 90...Rear wing, 100...Hand, 101...Finger, 102...Arm, 200...Wearer.

Claims (7)

It can be worn by placing it under the wearer's buttocks,
a ventral portion extending forward from the center of the product in the front-rear direction;
a dorsal portion extending rearward from the center in the front-rear direction of the product;
A crotch portion extending from the front side of the center of the product in the front-back direction to the back side of the center of the product in the front-back direction;
a rear wing that protrudes on both left and right sides behind the groin area;
a connecting portion provided on the rear wing and removably connected to the ventral portion;
An absorbent body is built-in over a range including the crotch area,
The back side portion is a connected absorbent article having side flaps extending to both sides of the absorbent body in the width direction, and end flaps extending to the rear side of the absorbent body. ,
A patch sheet is laminated within a portion of the outer surface of the back side portion that overlaps with the absorbent body,
When the direction intersecting the width direction at an angle of 30 to 90 degrees is the first direction, and the direction orthogonal to the first direction is the second direction,
Both ends of the patch sheet in the first direction are located in a portion overlapping with the absorbent body, and have a joint portion joined to an opposing surface facing inside thereof,
A portion of the patch sheet between the bonded portion on one side in the first direction and the bonded portion on the other side is a non-bonded portion that is not bonded to the opposing surface over the entire second direction of the patch sheet. It has become a department,
The non-joining portion and the opposing surface form a cylindrical portion having an inlet on one side and an outlet on the other side in the second direction,
an inlet of the cylindrical portion extends in the first direction;
One hand or four fingers other than the thumb are inserted into one of the cylindrical parts from the entrance along the second direction, and the tip side of the inserted hand or fingers is attached to the patch sheet. By protruding from the edge of the patch sheet and overlapping the patch sheet, the palm is supported by the palm and fingers from the portion overlapping with the absorbent body to the surrounding area, and the palm is sandwiched between the patch sheet and its opposing surface. , the patch sheet is configured such that the gap between the non-bonded portion and the opposing surface widens in the thickness direction and the gap between the bonded portions narrows, so that the product warps toward the hand side;
An absorbent article characterized by: When the longitudinal dimension of the dorsal part is LB, the entrance of the cylindrical part is in an area with a radius of 0.8 x LB centered on the longitudinal center and the widthwise center of the dorsal part. is located,
The absorbent article according to claim 1. The first direction is a direction that intersects the width direction at an angle of 30 degrees or more and less than 90 degrees,
The patch sheet has a band shape extending in the first direction,
The insertion ports are provided on one side and the other side in the width direction of the back side portion, respectively.
The absorbent article according to claim 1 or 2 . The dimension of the cylindrical portion in the first direction is 60 to 90 mm,
The dimension of the cylindrical portion in the second direction is 20 to 80 mm.
The absorbent article according to any one of claims 1 to 3 . It can be worn by placing it under the wearer's buttocks,
a ventral portion extending forward from the center of the product in the front-rear direction;
a dorsal portion extending rearward from the center in the front-rear direction of the product;
A crotch portion extending from the front side of the center of the product in the front-back direction to the back side of the center of the product in the front-back direction;
a rear wing that protrudes on both left and right sides behind the groin area;
a connecting portion provided on the rear wing and removably connected to the ventral portion;
An absorbent body is built-in over a range including the crotch area,
The back side portion is a connected absorbent article having side flaps extending to both sides of the absorbent body in the width direction , and end flaps extending to the rear side of the absorbent body. ,
A patch sheet is laminated within a portion of the outer surface of the back side portion that overlaps with the absorbent body,
The edge of the patch sheet has a joint part joined to an opposing surface on the inside thereof, and the joint part is arranged only at each vertex of the polygon,
When a direction intersecting the width direction at an angle of 30 to 90 degrees is defined as a first direction, and a direction orthogonal to the first direction is defined as a second direction, the polygon has a plurality of sides along the first direction. has
The entire portion other than the bonded portion is a non-bonded portion that is not bonded to the opposing surface,
A cylindrical portion having an inlet on one side and an outlet on the other side in the second direction is formed by the non-bonded portion and the opposing surface between all adjacent bonded portions,
an inlet of the cylindrical portion extends in the first direction;
One hand or four fingers other than the thumb are inserted into one of the cylindrical parts from the entrance along the second direction, and the tip side of the inserted hand or fingers is attached to the patch sheet. By protruding from the edge of the patch sheet and overlapping the patch sheet, the palm is supported by the palm and fingers from the portion overlapping with the absorbent body to the surrounding area, and the palm is sandwiched between the patch sheet and its opposing surface. , the patch sheet is configured such that the gap between the non-bonded portion and the opposing surface widens in the thickness direction and the gap between the bonded portions narrows, so that the product warps toward the hand side;
An absorbent article characterized by : The average coefficient of friction MIU of the inner surface of the patch sheet is 0.1 to 0.2.
The absorbent article according to any one of claims 1 to 5 . The average coefficient of friction MIU of the outer surface of the patch sheet is 1.5 to 2.5 times the average coefficient of friction MIU of the inner surface of the patch sheet .
The absorbent article according to claim 6 .

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