JP7042088B2 - Pad type absorbent article - Google Patents

Description

The present invention relates to a pad-type absorbent article having improved ease of wearing.

It is known that a pad-type absorbent article is laid on the surface of an outer (disposable diaper or underwear) so that the entire diaper does not need to be replaced when a small amount of the absorbent article is excreted. Typical examples of such pad-type absorbent articles include pad-type disposable diapers (see, for example, Patent Documents 1 and 2) and menstrual napkins.

Such pad-type absorbent articles are often worn by being inserted between the body and the outerwear. However, since the pad-type absorbent article is almost flat and long, and its shape retention is relatively low, it is easy to bend in the front-rear direction in the middle of the front-rear direction during the mounting work, and it is difficult to obtain an appropriate mounting state. Sometimes.

Moreover, if the wearer does not install the pad-type absorbent article by himself / herself, he / she attaches it with one hand in order to insert the pad-type absorbent article between the wearer's buttocks and the outer. It is necessary to work with only the other hand while holding down the person's body, which also contributes to the difficulty of wearing work.

Furthermore, when it is difficult for the wearer to move the body due to wearing the pad-type absorbent article, such as a care recipient or a low birth weight infant, the burden on the wearer's body during the wearing work is not increased. Therefore, it is necessary to perform the above-mentioned difficult work quickly and accurately. In particular, when attaching a pad-type absorbent article to a low birth weight infant, it is necessary to attach it in a narrow space such as in an incubator, and improvement in ease of attachment is desired.

Japanese Unexamined Patent Publication No. 2008-136626 JP-A-2015-066338A

Therefore, a main object of the present invention is to provide a pad-type absorbent article having excellent wearability.

The pad-type absorbent articles that have solved the above problems are as follows.
<First aspect>
The crotch part, the anterior part and the posterior part extending to the anterior side and the posterior side of the crotch part, respectively,
Absorber provided in the area including the crotch part,
A liquid impermeable sheet that covers the back side of the absorber and
A liquid-permeable top sheet that covers the front side of the absorber and
In pad-type absorbent articles equipped with
In the middle of the front-rear direction, there is a Z-folded portion in which the entire thickness direction is Z-folded in the front-rear direction.
Of the first part located on the front side, the second part located on the back side, and the third part located between the first part and the second part of the Z-folded part, the third part and the first part. It has a temporary fixing portion in which at least one of the first portion and the second portion is detachably joined.
A pad-type absorbent article characterized by that.

(Action effect)
With this pad-type absorbent article, it is possible to insert it between the body and the outer with a shorter overall length than when using it without peeling off the temporary fixing part, so it is possible to work in a state where it is more difficult to bend. It becomes. Then, after the pad-type absorbent article is adjusted to a desired position, the temporary fixing portion can be peeled off and the Z-folded portion can be expanded to extend the product length so that the product can be changed to a used state. Further, the Z-folded portion is a highly rigid portion in which three portions overlap, and functions as a reinforcing portion for preventing deformation of the pad-type absorbent article, so that the pad-type absorbent article is prevented from bending before the temporary fixing portion is peeled off. The sex will be even higher. The bending suppressing action facilitates the mounting work and enables smooth mounting work.
The Z-folded portion means a portion in which a flat pad-type disposable diaper is Z-folded (outer tri-folded) into three layers.

<Second aspect>
It has a side flap portion without the absorber, which extends laterally from the absorber.
The temporary fixing portion is provided only in the portion of the Z-folded portion where the side flap portions overlap.
The pad type absorbent article of the first aspect.

(Action effect)
Some pad-type absorbent articles have a side flap portion as described above. In this case, the portion having the absorber is located in the middle in the width direction, and because of its thickness, it is easy to touch the skin, and the side flap portion is hard to touch the skin. Therefore, by providing the temporary fixing portion only on the portion where the side flap portions overlap, it is possible to reduce the deterioration of the wearing feeling due to the peeling trace of the temporary fixing portion touching the skin.

<Third aspect>
The dimension of the Z-folded portion in the front-rear direction is 0.07 times or more and 0.16 times or less of the total length of the product in the state where the temporarily fixed portion is peeled off.
The pad-type absorbent article of the first or second aspect.

(Action effect)
The dimensions of the Z-folded portion in the front-rear direction are not particularly limited, but usually, it is preferably within the range of this embodiment.

<Fourth aspect>
The absorber has a constriction portion narrower than both sides in the anteroposterior direction in the middle of the anteroposterior direction including the crotch portion.
At least a part of the Z-folded portion is provided at a position overlapping the constricted portion.
A pad-type absorbent article according to any one of the first to third aspects.

(Action effect)
In the pad type absorbent article, the rigidity of the existing portion of the absorber is relatively high. For this reason, the absorber is provided with a constricted portion in the middle in the front-rear direction including the crotch portion to improve the fit to the leg circumference. However, if such a constricted portion is provided, the absorbent article tends to bend in the front-rear direction in the middle of the front-rear direction during the mounting work. Therefore, when the absorber has a constricted portion, it is desirable to provide a Z-folded portion at a position overlapping the constricted portion in the absorber.

<Fifth aspect>
The Z-folded portion is located on the front side of the center in the front-rear direction in the state before the temporary fixing portion is peeled off.
A pad-type absorbent article according to any one of the first to fourth aspects.

(Action effect)
When using a pad-type absorbent article, it is often the case that the front side of the pad-type absorbent article is held by hand and inserted between the body and the outer from the front side of the body. In this case, if the Z-folded portion is located behind the pad-type absorbent article, the Z-folded portion is arranged under the wearer's body, which makes it difficult to peel off the temporarily fixed portion. Therefore, it is preferable that the Z-folded portion is located on the front side of the center in the front-rear direction in the state before the temporary fixing portion is peeled off.

<Sixth aspect>
The Z-folded portion is folded so that the folded position of the first portion and the third portion is behind the folded position of the second portion and the third portion.
A pad-type absorbent article according to any one of the first to fifth aspects.

(Action effect)
According to this aspect, when the pad type absorbent article is inserted between the body and the outer and then the rear end portion of the pad type absorbent article is pulled backward, a force is applied in the direction of unfolding the Z-folded portion. The temporary fixing portion can be peeled off and the Z-folded portion can be unfolded with one operation.

<Seventh aspect>
The temporary fixing portion is formed by joining the third part and the second part so as to be peelable, and the third part and the first part are not joined.
The pad type absorbent article of the sixth aspect.

(Action effect)
In this embodiment, since the first portion and the second portion are not joined, when the rear end portion of the pad type absorbent article is pulled backward, the second portion is pulled forward and the second portion is rolled up. As described above, the Z-folded portion is unfolded by being peeled off from the third portion. Therefore, not only the peeling force is small due to the small number of joint layers of the temporarily fixed portion, but also the direction of the tensile force, the peeling direction (turning direction), and the unfolding direction of the Z-folded portion are the same. Peeling work and unfolding work of the temporary fixing portion become easy. Further, since the number of bonding layers of the temporarily fixed portion is small, manufacturing becomes easy.

<Eighth aspect>
The crotch part, the anterior part and the posterior part extending to the anterior side and the posterior side of the crotch part, respectively,
Absorber provided in the area including the crotch part,
A liquid impermeable sheet that covers the back side of the absorber and
A liquid-permeable top sheet that covers the front side of the absorber and
In pad-type absorbent articles equipped with
The crotch portion has a Z-folded portion in which the entire thickness direction is Z-folded in the front-rear direction.
Of the first part located on the front side, the second part located on the back side, and the third part located between the first part and the second part of the Z-folded part, the third part and the first part. It has a joint to which at least one of the first part and the second part is joined.
Perforations are formed to separate the portion including the joint portion from the other portions.
A pad-type absorbent article characterized by that.

(Action effect)
Since this pad-type absorbent article can be inserted between the body and the outer with a shorter overall length than when it is used, it is possible to work in a state where it is more difficult to bend. Then, after adjusting the pad-type absorbent article to the desired position, the perforations are separated to separate the portion including the joint portion, the Z-folded portion is expanded, and the product length is extended to change the product into a used state. Can be done. Further, the Z-folded portion is a highly rigid portion in which three portions overlap, and functions as a reinforcing portion for preventing deformation of the pad-type absorbent article, so that the pad-type absorbent article is prevented from bending before the temporary fixing portion is peeled off. The sex will be even higher. The bending suppressing action facilitates the mounting work and enables smooth mounting work. The Z-folded portion means a portion in which a flat pad-type disposable diaper is Z-folded (outer tri-folded) into three layers.

As described above, according to the present invention, there are advantages such as excellent mounting ease.

It is a top view which shows the pad type absorbent article before peeling off a temporary fixing part. It is BB sectional view of FIG. FIG. 1 is a cross-sectional view taken along the line AA of FIG. FIG. 3 is a sectional view taken along the line CC of FIG. It is a top view which shows the pad type absorbent article after peeling off a temporary fixing part. FIG. 5 is a cross-sectional view taken along the line BB of FIG. It is a perspective view which shows the mounting work of an absorbent article schematicly. It is a perspective view which shows the mounting work of an absorbent article schematicly. It is a top view which shows the pad type absorbent article before peeling off a joint part. It is a top view which shows the pad type absorbent article after peeling off a joint part. It is a top view which shows the pad type absorbent article before peeling off a temporary fixing part.

Hereinafter, the pad type absorbent article will be described in detail with reference to the attached drawings.
The pad-type absorbent article 1 shown in FIGS. 1 to 6 is provided in a region including a crotch portion C, an anterior side portion F and a posterior side portion B extending to the front side and the posterior side of the crotch portion C, respectively, and a crotch portion C. The absorber 4 is provided with a liquid-impermeable sheet 3 that covers the back side of the absorber 4, and a liquid-permeable top sheet 2 that covers the front side of the absorber 4. The crotch portion C means a portion located in the crotch of the body 100 at the time of use, and depending on the product, it may be located in the center of the LD in the anteroposterior direction of the article or may be located in the front side. When a narrow constricted portion is provided in the middle of the anteroposterior LD of the article or in the middle of the anteroposterior LD of the absorber 4, it means the range of the narrower anteroposterior LD. Further, the dotted pattern portion in the cross-sectional view shows an adhesive as a joining means for joining the constituent members located on the front side and the back side thereof, and the hot melt adhesive is solid, bead, curtain, summit or spiral coating, or It is applied by pattern coating (transfer of hot melt adhesive by letterpress method) or the like. Examples of the hot melt adhesive include EVA type, adhesive rubber type (elastomer type), olefin type, polyester / polyamide type and the like, but they can be used without particular limitation. As the joining means for joining each component, a means by welding a material such as a heat seal or an ultrasonic seal can also be used.

The shape of the pad-type absorbent article 1 is not particularly limited, and for example, as shown in the illustrated example, the shape may be a shape in which the corners are trimmed in an arc shape based on a rectangle long in the anteroposterior direction LD, or both side edges of the crotch portion C are legs. It can be a curved shape along the circumference.

The dimensions of the pad type absorbent article 1 are, for example, the total length Y1 in a state where the temporary fixing portion 20 to be described later is peeled off is about 100 to 300 mm, the total width X is about 50 to 150 mm, and the total length Y1 is 1.5 to 3. It can be about 0 times. The thickness of the portion of the pad-type absorbent article 1 having the absorber 4 can be about 2 to 8 mm.

As the material of each part, a known material can be appropriately used. As the absorbent body 4, it is possible to use a composite fiber of pulp fibers, an aggregate of filaments such as cellulose acetate, or a non-woven fabric 7 which is basically mixed and fixed with a highly absorbent polymer as needed. can. In thin products such as those for low birth weight infants, it is preferable that the absorber 4 is an air-laid non-woven fabric made of pulp fiber in order to reduce the thickness. When the absorber 4 is an air-laid nonwoven fabric, the fiber basis weight is preferably about 80 to 150 g / m ² , and the weight of the highly absorbent polymer is preferably about 90 to 160 g / m ² .

The shape of the absorber 4 is substantially rectangular, and as shown in the example shown in FIG. 5, a constricted portion 4n narrower than both sides of the anteroposterior LD is provided in the middle of the anteroposterior LD including the crotch portion C. If it is present, the fit around the legs will be good.

The absorber 4 can be packaged by a packaging sheet (not shown). As the packaging sheet, tissue paper, particularly crepe paper, non-woven fabric and the like can be used. As the packaging structure using the packaging sheet, a known structure can be applied without particular limitation.

The top sheet 2 has a property of allowing liquid to permeate, and examples thereof include a perforated or non-perforated non-woven fabric and a porous plastic sheet. The non-woven fabric is not particularly limited. For example, the constituent fibers of the non-woven fabric include olefin-based fibers such as polyethylene and polypropylene, polyester-based and polyamide-based synthetic fibers (including single-component fibers and composite fibers such as core sheaths), as well as rayon and cupra. Regenerated fiber, natural fiber such as cotton, and the like can be selected without particular limitation, and these can be mixed and used. In order to increase the flexibility of the non-woven fabric, it is preferable that the constituent fibers are crimped fibers. Further, even if the constituent fibers of the non-woven fabric are hydrophilic fibers (including those made hydrophilic by a hydrophilic agent), hydrophobic fibers or water-repellent fibers (water-repellent fibers made water-repellent by a water-repellent agent) are used. Including). In addition, the non-woven fabric generally has a short fiber non-woven fabric, a long fiber non-woven fabric, a spunbond non-woven fabric, a melt blown non-woven fabric, a spunlace non-woven fabric, a thermal bond (air-through) non-woven fabric, and a needle punch depending on the fiber length, the sheet forming method, the fiber bonding method, and the laminated structure. It is classified into non-woven fabrics, point-bonded non-woven fabrics, laminated non-woven fabrics (SMS non-woven fabrics having a melt blown layer sandwiched between spunbond layers, SMMS non-woven fabrics, etc.), and any of these non-woven fabrics can be used for the top sheet 2. When a non-woven fabric is used for the top sheet 2, the basis weight and thickness are not particularly limited, but usually, the basis weight is about 10 to 35 g / m ² and the thickness is about 1.0 to 2.5 mm. Can be used.

The top sheet 2 may be projected from the front, back, left and right of the absorber 4 as shown in the illustrated example, or may be wrapped around the back side of the absorber 4 at both side edges of the absorber 4 and extended to the bottoms of both sides of the absorber 4. can.

The material of the liquid-impermeable sheet 3 is not particularly limited, but is, for example, a plastic film made of an olefin resin such as polyethylene or polypropylene, a laminated nonwoven fabric in which a plastic film is provided on the surface of the nonwoven fabric, or a plastic film. An example is a laminated sheet in which a non-woven fabric 7 or the like is laminated and bonded to the above. For the liquid-impermeable sheet 3, it is preferable to use a liquid-impermeable and moisture-permeable material that is preferably used from the viewpoint of preventing stuffiness. As a moisture-permeable plastic film, a microporous plastic film obtained by kneading an inorganic filler in an olefin resin such as polyethylene or polypropylene to form a sheet and then stretching it in a uniaxial or biaxial direction. Is widely used. In addition to this, non-woven fabrics using microdenier fibers, leakage-proof enhancement by reducing the voids of the fibers by applying heat or pressure, and coating of highly water-absorbent resin or hydrophobic resin or water-repellent agent. Therefore, a liquid-impermeable sheet without using a plastic film can also be used as the liquid-impermeable sheet 3.

As shown in the illustrated example, the liquid impermeable sheet 3 protrudes from the front, back, left and right sides of the absorber 4, wraps around the front side of the absorber 4 at both side edges of the absorber 4, and extends over both sides of the absorber 4. It can also be present.

In the illustrated example, the side flap portion 5 having no absorber 4 extending laterally from the absorber 4 is provided, but the structure may be such that the side flap portion 5 is not provided. For example, the top sheet 2 in the illustrated example is folded back at both side edges of the absorber 4 and the width of the liquid impermeable sheet 3 is set to be equal to or less than the width of the absorber 4, or the liquid impermeable sheet 3 is used as the absorber. By folding back to the front side at both side edges of 4, the structure without the side flap portion 5 can be obtained.

Characteristically, the pad-type absorbent article 1 has a Z-folded portion 10 in the middle of the front-rear direction LD, which is Z-folded entirely in the front-rear direction LD in the thickness direction. Further, the Z-folded portion 10 has a first portion 11 located on the front side, a second portion 12 located on the back side, and a third portion 13 located between the first portion 11 and the second portion 12. , The third portion 13 and at least one of the first portion 11 and the second portion 12 are detachably joined to each other to have a temporary fixing portion 20.

The joining of the third portion 13 and at least one of the first portion 11 and the second portion 12 in the temporary fixing portion 20 is performed by material welding (ultrasonic sealing or heat sealing) as shown in FIG. 4 (a). In addition, it can be carried out with an adhesive as shown in FIGS. 4 (b) and 4 (c). In addition, in order to make these joints peelable, the joint area can be reduced and the degree of welding can be weakened.

As shown in FIGS. 1 and 7, the pad-type absorbent article 1 is placed between the body 100 and the outer 101 in a state where the total length Y2 is shorter than that at the time of use without peeling off the temporary fixing portion 20 at the time of mounting. Since it can be inserted, it is possible to work in a state where it is more difficult to bend. Then, after aligning the pad-type absorbent article 1 at a desired position, the temporary fixing portion 20 is peeled off, the Z-folded portion 10 is unfolded, and the total length Y1 is extended, as shown in FIGS. 5 and 8. It can be changed to the usage state. Further, the Z-folded portion 10 is a highly rigid portion in which three portions overlap, and functions as a reinforcing portion for preventing deformation of the pad-type absorbent article 1, so that the pad-type absorbent article before the temporary fixing portion 20 is peeled off. The bending prevention property of 1 is further improved. The bending suppressing action facilitates the mounting work and enables smooth mounting work.

The position of the temporary fixing portion 20 in the Z-folded portion 10 is not particularly limited, and may be provided in a portion overlapping the absorber 4. However, since the portion having the absorber 4 is located in the middle of the WD in the width direction and has a thickness, the peeling trace 21 (melted solidified portion, adhesive, etc.) of the temporary fixing portion 20 touches the skin during use, resulting in a feeling of wearing. May worsen. On the other hand, the side flap portion 5 is hard to touch the skin. Therefore, as shown in the illustrated example, if the temporary fixing portion 20 is provided only on the portion where the side flap portion 5 overlaps, it is possible to reduce the deterioration of the wearing feeling due to the peeling trace of the temporary fixing portion 20 touching the skin. Further, since the temporary fixing portion 20 is preferably provided in the minimum size, it is preferably provided only in a part of the Z-folded portion 10 as shown in the illustrated example, but it can also be provided in the entire area.

Further, the temporary fixing portion 20 may be arranged symmetrically as shown in the example shown in FIG. 1, or may be provided asymmetrically as shown in FIG. 11. In particular, as in the example shown in FIG. 11, by providing only one temporary fixing portion 20 (in the illustrated example, only one side flap portion 5 is provided), the peeling work becomes easy.

Although not shown, a plurality of temporary fixing portions 20 may be provided on each side flap portion 5 or one side flap portion 5. However, from the viewpoint of ease of peeling work, it is preferable that the number of temporary fixing portions 20 is small.

The dimension 10y of the front-rear direction LD of the Z-folded portion 10 is not particularly limited, but usually, it is 0.07 times or more (specifically, 10 mm or more) the total length Y1 of the product in the state where the temporarily fixed portion 20 is peeled off. If there is, it is preferable because it is possible to secure the product total length Y1 at the time of use and shorten the product total length Y2 at the time of mounting work. However, if the dimension 10y of the front-rear direction LD of the Z-folded portion 10 is too long, the end portion of the front-back direction LD of the pad type absorbent article 1 is held by hand, and when the hand is inserted between the body 100 and the outer 101, the hand is used. Since it is necessary to insert it all the way, it is preferably 0.16 times or less of the total length Y1 of the product in the state where the temporary fixing portion 20 is peeled off. A particularly preferable range is 0.09 to 0.12 times. Note that FIG. 11 shows an example in which the dimension 10y of the front-rear direction LD of the Z-folded portion 10 is significantly longer than the example shown in FIG.

The position of the LD in the front-rear direction of the Z-folded portion 10 can be appropriately determined. Normally, with the temporary fixing portion 20 joined, a part or all of the Z-folded portion 10 may overlap with the central region when the pad type absorbent article 1 is divided into three equal parts in the front-rear direction LD. preferable. The Z-folded portion 10 may be provided at one place in the front-rear direction LD as shown in the illustrated example, or may be provided in a plurality of Z-folded portions 10 at intervals or without a gap in the front-rear direction LD (not shown).

Further, as in the example shown in FIG. 1, when the absorbent body 4 is provided with the constricted portion 4n to improve the fit around the legs, the pad type absorbent article 1 is in the middle of the front-rear LD during the mounting work. It becomes easy to bend in the front-back direction LD. Therefore, when the absorber 4 has the constricted portion 4n, it is preferable that at least a part of the Z-folded portion 10, particularly the entire portion, is provided at a position where the constricted portion 4n overlaps.

Further, when the pad type absorbent article 1 is used, it is often the case that the front side of the pad type absorbent article 1 is held by hand and inserted between the body 100 and the outer 101 from the front side of the body 100. In this case, if the Z-folded portion 10 is located behind the pad-type absorbent article 1, the Z-folded portion 10 is arranged under the wearer's body, which makes it difficult to peel off the temporary fixing portion 20. It becomes. Therefore, it is also preferable that the Z-folded portion 10 is located on the front side of the center of the front-rear direction LD in the state before the temporary fixing portion 20 is peeled off as shown in the illustrated example. In addition, the "front side" means one of the front-rear direction LDs in the case of a front-back symmetrical shape in which there is no distinction between front and back.

The Z-folded portion 10 may be folded so that the folded positions of the first portion 11 and the third portion 13 are on the front side of the folded positions of the second portion 12 and the third portion 13. However, as in the Z-folded portion 10 of the illustrated example, the folded positions of the first portion 11 and the third portion 13 are folded back so as to be behind the folded positions of the second portion 12 and the third portion 13. It is preferable that it is. That is, in the latter case, when the pad-type absorbent article 1 is inserted between the body 100 and the outer 101 and then the rear end portion of the pad-type absorbent article 1 is pulled backward, the Z-fold portion 10 is developed. Since the force is applied to the force, the temporary fixing portion 20 can be peeled off and the Z-folded portion 10 can be unfolded by one operation.

Further, in this case, as shown in FIG. 4C, the temporary fixing portion 20 is formed by joining the third portion 13 and the second portion 12 in a detachable manner, and the third portion 13 and the first portion 11 are joined together. It is more preferable that is not joined. That is, since the first portion 11 and the second portion 12 are not joined, when the rear end portion of the pad type absorbent article 1 is pulled backward, the second portion 12 is pulled forward and the second portion 12 is pulled. Is peeled off from the third portion 13 so as to be rolled up, and the Z-folded portion 10 is developed. Therefore, since the number of joint layers of the temporary fixing portion 20 is small, not only the peeling force is small, but also the direction of the tensile force, the peeling direction (turning direction), and the unfolding direction of the Z-folded portion 10 are the same. In particular, the peeling work and the unfolding work of the temporary fixing portion 20 become easy. Further, since the number of bonding layers of the temporary fixing portion 20 is small, the manufacturing becomes easy.

On the other hand, in the pad-type absorbent article 1 of the above example, the temporary fixing portion 20 is peeled off to expand to the entire length of the used state. It is also proposed that a portion including the joint portion 30 is provided instead and a perforation 31 for separating the portion including the joint portion 30 from the other portions is formed.

The bonding between the third portion 13 and at least one of the first portion 11 and the second portion 12 in the joint portion 30 is performed by material welding (ultrasonic sealing or heat sealing) as shown in FIG. 4A. In addition, it can be carried out with a hot melt adhesive as shown in FIGS. 4 (b) and 4 (c). The joint portion 30 in this example may be a joint portion 30 that can be peeled off or a joint portion 30 that does not peel off.

Even in this pad type absorbent article 1, when it is attached, it can be inserted between the body 100 and the outer 101 with a shorter overall length than when it is used, so that it is possible to work in a state where it is more difficult to bend. Then, after the pad-type absorbent article 1 is aligned with the desired position, as shown in FIG. 10, the perforation 31 is separated to separate the portion 32 including the joint portion 30, and the Z-fold portion 10 is unfolded. It can be changed to the state of use by extending the product length. Further, the Z-folded portion 10 is a highly rigid portion in which three portions overlap, and functions as a reinforcing portion for preventing deformation of the pad-type absorbent article 1, so that the pad-type absorbent article before the temporary fixing portion 20 is peeled off. The bending prevention property of 1 is further improved. The bending suppressing action facilitates the mounting work and enables smooth mounting work.

<Explanation of terms in the specification>
The following terms in the specification have the following meanings unless otherwise specified in the specification.

-The "front-back (vertical) direction" means the direction connecting the ventral side (front side) and the dorsal side (rear side), and the "width direction" means the direction orthogonal to the front-back direction (horizontal direction).

・ "Front side" means the one closer to the wearer's skin when wearing the pad type absorbent article, and "back side" means the one farther from the wearer's skin when wearing the pad type absorbent article. means.

-The "front side" means the surface of the member that is closer to the wearer's skin when wearing the pad-type absorbent article , and the "back surface" means the wearer's face when wearing the pad-type absorbent article . It means the side far from the skin.

-"Total light transmittance" means a value at which the total light transmittance is measured according to JIS-K7105.

-"Elongation rate" means a value when the natural length is 100%.

-"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-exchanged water: 97.09 wt% Add 1.0 g of highly absorbent polymer to 49.0 g (mixed product) and stir with a stirrer. The produced gel is left in a constant temperature and humidity chamber at 40 ° C. × 60% RH for 3 hours, then returned to room temperature, and the gel strength is measured with a card meter (Curdmeter-MAX ME-500 manufactured by I.techno Engineering).

・ "Metsuke" is measured as follows. After pre-drying the sample or test piece, leave it in a test room or device in a standard state (test location: temperature 23 ± 1 ° C., relative humidity 50 ± 2%) to bring it to a constant weight. Pre-drying refers to constant weight of a sample or test piece in an environment with a temperature of 100 ° C. For fibers with an official moisture content of 0.0%, pre-drying does not have to be performed. From the test piece in a constant weight state, a sample having a size of 100 mm × 100 mm is cut out using a sample collecting template (100 mm × 100 mm). The weight of the sample is measured and multiplied by 100 to calculate the weight per square meter, which is used as a basis weight.

-The "thickness" is automatically measured using an automatic thickness measuring device (KES-G5 handy compression measurement program) under the conditions of a load of 0.098 N / cm ² and a pressurized area of 2 cm ² .

-The water absorption amount is measured by JIS K7223-1996 "Water absorption amount test method for highly water-absorbent resin".

-The water absorption rate shall be the "time to the end point" when JIS K7224-1996 "Water absorption rate test method for highly water-absorbent resin" was performed using 2 g of highly absorbent polymer and 50 g of physiological saline. ..

-"Unfolded state" means a state in which the unfolded state is flat without shrinkage or slack.

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

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

The present invention is suitable for auxiliary use in low birth weight infants, but can also be used as a pad-type absorbent article for other purposes.

1 ... Pad type absorbent article, 10 ... Z-folded part, 100 ... Body, 101 ... Outer, 11 ... 1st part, 12 ... 2nd part, 13 ... 3rd part, 2 ... Top sheet, 20 ... Temporary fixing part 3, ... Liquid impermeable sheet, 30 ... Joint, 31 ... Perforation, 4 ... Absorber, 5 ... Side flap, 7 ... Non-woven fabric, B ... Rear part, C ... Crotch part, F ... Front part, LD ... front-back direction, WD ... width direction.

Claims (7)

The crotch part, the anterior part and the posterior part extending to the anterior side and the posterior side of the crotch part, respectively,
Absorber provided in the area including the crotch part,
A liquid impermeable sheet that covers the back side of the absorber and
A liquid-permeable top sheet that covers the front side of the absorber and
The side flap portion without the absorber, which extends laterally from the absorber, and
In pad-type absorbent articles equipped with
In the middle of the front-rear direction, there is a Z-folded portion in which the entire thickness direction is Z-folded in the front-rear direction.
Of the first part located on the front side, the second part located on the back side, and the third part located between the first part and the second part of the Z-folded part, the third part and the first part. It has a temporary fixing portion in which at least one of the first portion and the second portion is detachably joined , and also has a temporary fixing portion.
The temporary fixing portion is provided only in a portion of the Z-folded portion where one of the side flap portions overlaps.
A pad-type absorbent article characterized by that. The dimension of the Z-folded portion in the front-rear direction is 0.07 times or more and 0.16 times or less of the total length of the product in the state where the temporarily fixed portion is peeled off.
The pad type absorbent article according to claim 1. The absorber has a constriction portion narrower than both sides in the anteroposterior direction in the middle of the anteroposterior direction including the crotch portion.
At least a part of the Z-folded portion is provided at a position overlapping the constricted portion.
The pad type absorbent article according to claim 1 or 2 . The Z-folded portion is located on the front side of the center in the front-rear direction in the state before the temporary fixing portion is peeled off.
The pad-type absorbent article according to any one of claims 1 to 3 . The Z-folded portion is folded so that the folded position of the first portion and the third portion is behind the folded position of the second portion and the third portion.
The pad-type absorbent article according to any one of claims 1 to 4 . The temporary fixing portion is formed by joining the third part and the second part so as to be peelable, and the third part and the first part are not joined.
The pad type absorbent article according to claim 5 . The crotch part, the anterior part and the posterior part extending to the anterior side and the posterior side of the crotch part, respectively,
Absorber provided in the area including the crotch part,
A liquid impermeable sheet that covers the back side of the absorber and
A liquid-permeable top sheet that covers the front side of the absorber and
In pad-type absorbent articles equipped with
The crotch portion has a Z-folded portion in which the entire thickness direction is Z-folded in the front-rear direction.
Of the first part located on the front side, the second part located on the back side, and the third part located between the first part and the second part of the Z-folded part, the third part and the first part. It has a joint to which at least one of the first part and the second part is joined.
Perforations are formed to separate the portion including the joint portion from the other portions.
A pad-type absorbent article characterized by that.

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