JP2019122560A - Pad type absorbent article - Google Patents

Abstract

To provide a pad type absorbent article excellent in mounting easiness.SOLUTION: A pad type absorbent article 1 comprises a temporary stopping part 20 which has in the middle in a front-back direction LD, a Z-folded part 10 having a whole part in a thickness direction Z-folded in the front-back direction LD, and in which among a first part 11 positioned at a front side, a second part 12 positioned at a rear side, and a third part 13 positioned between the first part 11 and the second part 12 in the Z-folded part 10, the third part 13 and at least one of the first part 11 and the second part 12 are peelably connected.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a pad-type absorbent article with improved ease of attachment.

  In the absorbent article, it is known to use a pad-type absorbent article on the surface of an outer (disposable diaper or underwear) so that the entire diaper is not replaced at the time of small amount excretion. Typical examples of such pad type absorbent articles are pad type disposable diapers (see, for example, Patent Documents 1 and 2) and sanitary napkins.

  Such pad type absorbent articles are often worn by being inserted between the body and the outer. However, since the pad-type absorbent article is substantially flat and long and the shape-retaining property is relatively low, it is likely to be bent in the front-back direction at the middle of the front-back direction during mounting work, causing difficulty in achieving an appropriate mounting state. Sometimes.

  Moreover, when the wearer does not carry out the work of mounting the pad-type absorbent article by himself, the user wears it with one hand in order to insert the pad-type absorbent article between the buttocks and the outer of the wearer It is necessary to work with only the other hand while holding the person's body, which also contributes to the difficulty in the mounting operation.

  Furthermore, if it is difficult for the wearer to move the body to wear the pad-type absorbent article, such as a care recipient or low birth weight child, the burden on the wearer's body in the wearing operation is not increased. There is also a need to perform the above-described difficult tasks quickly and accurately. In particular, when attaching a pad-type absorbent article to a low birth weight child, an attaching operation in a narrow space inside an incubator is required, and improvement of the attachment ease is desired.

JP, 2008-136626, A JP, 2015-066338, A

  Then, the main subject of this invention is providing the pad type absorbent article which is excellent in the mounting | wearing ease.

The pad type absorbent article which solved the said subject is as follows.
<First aspect>
A crotch, and a front portion and a back portion extending respectively to the front and back sides of the crotch;
An absorber provided in a region including the crotch;
A liquid impermeable sheet covering the back side of the absorber;
A liquid-permeable top sheet covering the front side of the absorber;
In a pad type absorbent article provided with
At the middle of the longitudinal direction, there is a Z-folded portion in which the whole in the thickness direction is Z-folded in the longitudinal direction,
In the Z-folded portion, the third portion among the first portion located on the front side, the second portion located on the back side, and the third portion located between the first portion and the second portion, and the third portion Having a temporary fixing part releasably joined to at least one of the first part and the second part,
Pad type absorbent article characterized by the above-mentioned.

(Action effect)
In this pad type absorbent article, since it can be inserted between the body and the outer in a state where the total length is shorter than in use without peeling off the temporary fixing part, work in a state in which bending is more difficult is possible It becomes. Then, after the pad type absorbent article is aligned with a desired position, the temporary fixing portion is peeled off, the Z-folded portion is expanded, and the product length can be changed to a use state. In addition, the Z-folded portion is a highly rigid portion in which three portions overlap, and functions as a reinforcing portion that prevents deformation of the pad-type absorbent article, thus preventing bending of the pad-type absorbent article before peeling off the temporary fixing portion. Sex is even higher. And by such a bending suppression effect | action, mounting work becomes easy and smooth mounting work becomes possible.
The Z-folded portion means a portion in which a flat pad-type disposable diaper is Z-folded (tri-folded) into three layers.

<Second aspect>
It has a side flap portion without the absorber which extends laterally beyond the absorber;
The temporary fixing portion is provided only in a portion where the side flaps overlap in the Z-folded portion,
The pad type absorbent article of a 1st aspect.

(Action effect)
Some pad type absorbent articles have side flaps as described above. In this case, the portion having the absorber is located in the middle in the width direction and is thick, so it is easy to touch the skin, and the side flap portion is hard to touch the skin. For this reason, it is possible to reduce the deterioration of the wearing feeling due to the peeling trace of the temporary fixing portion touching the skin by providing the temporary fixing portion only on the overlapping portion of the side flaps.

<Third aspect>
The dimension in the front-rear direction of the Z-folded portion is not less than 0.07 times and not more than 0.16 times the entire product length in a state where the temporary fixing portion is peeled off.
The pad type absorbent article according to the first or second aspect.

(Action effect)
The dimension in the front-rear direction of the Z-folded portion is not particularly limited, but in the normal case, it is preferable to be within the range of this embodiment.

<Fourth aspect>
The absorbent body has a narrow portion narrower than both sides in the front-rear direction at the middle in the front-rear direction including the crotch.
At least a portion of the Z-folded portion is provided at a position overlapping the constricted portion,
The 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 portion where the absorber is present is relatively high. For this reason, in the absorbent body, a neck portion is provided in the middle in the front-rear direction including the crotch portion to improve the fit around the leg. However, when such a constricted portion is provided, the absorbent article tends to be bent in the front-rear direction at the middle in the front-rear direction during the mounting operation. 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 forward of the center in the front-rear direction in the state before peeling off the temporary fixing portion.
The pad type absorbent article according to any one of the first to fourth aspects.

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

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

(Action effect)
According to this aspect, after the pad type absorbent article is inserted between the body and the outer, when the rear end of the pad type absorbent article is pulled backward, a force is applied in the direction to expand the Z-folded part The peeling of the temporary fixing portion and the development of the Z-folded portion can be performed in one operation.

<Seventh aspect>
The temporary fixing portion is obtained by releasably joining the third portion and the second portion, and the third portion and the first portion are not joined.
The pad type absorbent article of a 6th aspect.

(Action effect)
In this aspect, 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 by being pulled forward. As a result, the third part is peeled off and the Z-folded part is developed. Therefore, not only the peeling force can be small due to the small number of bonding layers of the temporary fixing portion, but also the direction of tensile force, the direction of peeling (the direction of bending), and the developing direction of the Z-folded part coincide, Peeling work and unfolding work of the temporary fixing portion become easy. In addition, since the number of bonding layers in the temporary fixing portion is small, the manufacture becomes easy.

Eighth Aspect
A crotch, and a front portion and a back portion extending respectively to the front and back sides of the crotch;
An absorber provided in a region including the crotch;
A liquid impermeable sheet covering the back side of the absorber;
A liquid-permeable top sheet covering the front side of the absorber;
In a pad type absorbent article provided with
The crotch has a Z-folded portion in which the whole in the thickness direction is Z-folded in the front-rear direction,
In the Z-folded portion, the third portion among the first portion located on the front side, the second portion located on the back side, and the third portion located between the first portion and the second portion, and the third portion And a joint portion joined to at least one of the first portion and the second portion,
Perforations are formed to separate the part including the joint from the other parts,
Pad type absorbent article characterized by the above-mentioned.

(Action effect)
In the pad type absorbent article, since it can be inserted between the body and the outer with a total length shorter than that in use, it is possible to work in a state in which it is more difficult to bend. Then, after aligning the pad type absorbent article to a desired position, the perforations are separated to separate the portion including the joint portion, and the Z-folded portion is developed to change the use state by extending the product length. Can. In addition, the Z-folded portion is a highly rigid portion in which three portions overlap, and functions as a reinforcing portion that prevents deformation of the pad-type absorbent article, thus preventing bending of the pad-type absorbent article before peeling off the temporary fixing portion. Sex is even higher. And by such a bending suppression effect | action, mounting work becomes easy and smooth mounting work becomes possible. The Z-folded portion means a portion in which a flat pad-type disposable diaper is Z-folded (tri-folded) into three layers.

  As described above, according to the present invention, advantages such as excellent mounting ease can be provided.

It is a top view which shows the pad type absorbent article before peeling a temporary fixation part. It is BB sectional drawing of FIG. It is AA sectional drawing of FIG. It is CC sectional drawing of FIG. It is a top view which shows the pad type absorbent article after peeling off a temporary fixing part. It is a BB sectional view of FIG. It is a perspective view which shows installation operation | work of an absorbent article roughly. It is a perspective view which shows installation operation | work of an absorbent article roughly. It is a top view which shows the pad type absorbent article before peeling a junction part. It is a top view which shows the pad type absorbent article after peeling a junction part. It is a top view which shows the pad type absorbent article before peeling a temporary fixation 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, a front portion F and a back portion B extending to the front and back sides of the crotch portion C, respectively, and the crotch portion C. The absorbent 4, the liquid impermeable sheet 3 covering the back side of the absorbent 4, and the liquid-permeable top sheet 2 covering the front side of the absorbent 4 are provided. The crotch portion C means a portion located between the crotch of the body 100 at the time of use, and depending on the product, it is located at the center of the longitudinal direction LD of the article or at the front side. In the case of having a narrow waist portion at the middle of the longitudinal direction LD of the article or at the middle of the longitudinal direction LD of the absorber 4, the range of the narrower longitudinal direction LD is meant. Further, the dotted portions in the cross-sectional view show an adhesive as a bonding means for bonding the respective components located on the front side and the back side, and the solid, bead, curtain, summit, or spiral application of the hot melt adhesive, or It is applied by pattern coating (transfer of hot melt adhesive by letterpress method) or the like. As the hot melt adhesive, for example, those of EVA type, adhesive rubber type (elastomer type), olefin type, polyester / polyamide type, etc. exist, but they can be used without particular limitation. As a joining means for joining the respective constituent members, means by material welding such as heat sealing or ultrasonic sealing can be used.

  The shape of the pad-type absorbent article 1 is not particularly limited. For example, as shown in the illustrated example, based on a long rectangle in the front-rear direction LD, the corners are trimmed into arcs, or both side edges of the crotch C are legs It can be shaped like a curve along the circumference.

  The pad type absorbent article 1 has a total length Y1 of about 100 to 300 mm, a total width X of about 50 to 150 mm, and a total length Y1 of 1.5 to 3. It can be about 0 times. The thickness in the part which has the absorber 4 of the pad type absorbent article 1 can be about 2-8 mm.

The material of each part can use a well-known thing suitably. As the absorbent body 4, use may be made of a pile of pulp fibers, an aggregate of filaments such as cellulose acetate, or a non-woven fabric 7 and mixing and adhering a highly absorbent polymer as necessary. it can. In thin products such as low birth weight infants, it is preferable to use an air-laid non-woven fabric of pulp fibers in order to reduce the thickness. When the absorbent body 4 is an air-laid non-woven fabric, the fiber basis weight is preferably about 80 to 150 g / m ² , and the superabsorbent polymer basis weight is preferably about 90 to 160 g / m ² .

  The absorber 4 has a substantially rectangular shape, and as in the example shown in FIG. 5, the middle portion of the longitudinal direction LD including the crotch portion C, the narrow portion 4n having a narrower width than both sides of the longitudinal direction LD. When it is possessed, the fit around the leg is good.

  The absorber 4 can be packaged by a packaging sheet (not shown). Tissue paper, in particular crepe paper, non-woven fabric, etc. can be used as the packaging sheet. The packaging structure by a packaging sheet can apply a well-known structure without particular limitation.

The top sheet 2 has a property of transmitting liquid, and can be exemplified by a non-porous or non-porous non-woven fabric, a porous plastic sheet, and the like. The non-woven fabric is not particularly limited. For example, as constituent fibers of non-woven fabrics, synthetic fibers of olefin type such as polyethylene or polypropylene, polyester type, polyamide type (including composite fibers such as core and sheath besides monocomponent fibers), rayon and cupra etc It can be selected without particular limitation, for example, regenerated fibers, natural fibers such as cotton, etc., and they can be used by mixing. In order to increase the softness of the non-woven fabric, it is preferable to make the constituent fibers be crimped fibers. Further, the constituent fibers of the non-woven fabric may be hydrophilic fibers (including hydrophobic fibers rendered hydrophilic by a hydrophilizing agent), hydrophobic fibers or water repellent fibers (water repellent by water repellent). (Including aqueous fibers). Non-woven fabrics are generally short-fiber non-woven fabrics, long-fiber non-woven fabrics, spun-bonded non-woven fabrics, melt-blown non-woven fabrics, spun-laced non-woven fabrics, thermal-bonded (air-through) non-woven fabrics, needle punch Non-woven fabrics, point-bonded non-woven fabrics, laminated non-woven fabrics (SMS non-woven fabrics having a meltblown layer sandwiched between spun-bonded layers, SMMS non-woven fabrics, etc.) etc. can be used for the top sheet 2. When using a non-woven fabric for the top sheet 2, the basis weight and thickness thereof are not particularly limited, but in the normal case, the basis weight is about 10 to 35 g / m ² and the thickness is about 1.0 to 2.5 mm. It can be used.

  The top sheet 2 may extend out to the front, rear, left, and right of the absorber 4 as shown in the figure, or may extend around the back of the absorber 4 at both side edges of the absorber 4 and extend under the both sides of the absorber 4 it can.

  The material of the liquid impermeable sheet 3 is not particularly limited. For example, a plastic film made of an olefin resin such as polyethylene or polypropylene, a laminated non-woven fabric having a plastic film on the surface of a non-woven fabric, or a plastic film The laminated sheet etc. which overlapped and joined nonwoven fabric 7 grade | etc., Can be illustrated. For the liquid impermeable sheet 3, it is preferable to use a material having liquid impermeability and moisture permeability, which is preferably used from the viewpoint of preventing migration. As a plastic film having moisture permeability, 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 in a uniaxial or biaxial direction Is widely used. In addition, non-woven fabric using microdenier fibers, reinforcement of leakproofness by reducing the voids of the fibers by applying heat and pressure, and methods of coating highly water-absorbent resin or hydrophobic resin or water repellent agent Thus, a sheet rendered liquid impermeable without using a plastic film can also be used as the liquid impermeable sheet 3.

  The liquid impermeable sheet 3 is projected to the front, rear, left, and right of the absorber 4 as shown in the illustrated example, and also wraps around the front side of the absorber 4 at both side edges of the absorber 4 and extends to above both sides of the absorber 4 It can also be made to exist.

  In the example of illustration, although it has the side flap part 5 without the absorber 4 which extended sideward rather than the absorber 4, it can also be set as the structure which does not have the side flap part 5. FIG. 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 made equal to or less than the width of the absorber 4 or the liquid impermeable sheet 3 is By turning back to the front side at both side edges of 4, the structure without the side flap portion 5 can be obtained.

  Characteristically, in the middle of the pad-type absorbent article 1 in the front-rear direction LD, the entire Z-folded portion 10 in the thickness direction is Z-folded in the front-rear direction LD. 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 have a temporary fixing portion 20 releasably joined.

  Bonding between 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 seal or heat seal) as shown in FIG. 4A. In addition, as shown in FIG. 4 (b) (c), it can be carried out with an adhesive. In addition, in order to make these joining peelable, a joining area can be made small or the grade of welding can be weakened.

  As shown in FIGS. 1 and 7, the pad-type absorbent article 1 does not peel off the temporary fixing portion 20 during attachment, and the entire length Y2 is shorter than that during use, between the body 100 and the outer 101. Since the plug can be inserted, it is possible to work in a less bendable state. Then, after aligning the pad type absorbent article 1 to a desired position, the temporary fixing portion 20 is peeled off, the Z-folded portion 10 is expanded, and the full length Y1 is extended as shown in FIGS. 5 and 8. It can be changed to the use state. In addition, the Z-folded portion 10 is a highly rigid portion in which three portions overlap, and functions as a reinforcing portion that prevents deformation of the pad-type absorbent article 1. Therefore, the pad-type absorbent article before peeling off the temporary fixing portion 20 The bending prevention property of 1 becomes even higher. And by such a bending suppression effect | action, mounting work becomes easy and smooth mounting work becomes possible.

  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 with the absorber 4. However, the portion having the absorber 4 is positioned at the middle of the width direction WD and has a thickness, so that the peeling trace 21 of the temporary fixing portion 20 (a melted and solidified portion, an adhesive, etc.) touches the skin during use. May deteriorate. On the other hand, the side flaps 5 are hard to touch the skin. Therefore, if the temporary fixing portions 20 are provided only at the overlapping portions of the side flaps 5 as in the illustrated example, it is possible to reduce the deterioration of the wearing feeling due to the peeling marks of the temporary fixing portions 20 touching the skin. Moreover, since it is preferable to provide the temporary fixing part 20 by the minimum magnitude | size, it is preferable to provide only in a part of Z-fold part 10 like the example of illustration, but it can also provide over the whole.

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

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

  The dimension 10y of the longitudinal direction LD of the Z-folded portion 10 is not particularly limited, but in the normal case, it is 0.07 times or more of the full length Y1 of the product when the temporary fixing portion 20 is peeled off (10 mm or more as a specific dimension) This is preferable because it is possible to achieve both the securing of the full product length Y1 at the time of use and the shortening of the full product length Y2 during the mounting operation. However, when the dimension 10y of the Z-folded portion 10 in the front-rear direction LD is too long, the end of the pad-type absorbent article 1 in the front-rear direction LD is held by hand and inserted between the body 100 and the outer 101 It is preferable that the total length Y1 is 0.16 or less of the total product length Y1 in a state in which the temporary fixing portion 20 is peeled, in order to generate the need to insert the back to the end. The particularly preferred range is 0.09 to 0.12. FIG. 11 shows an example in which the dimension 10y of the Z-folded portion 10 in the front-rear direction LD is much longer than the example shown in FIG.

  The position of the Z-folded portion 10 in the front-rear direction LD can be determined as appropriate. In a normal case, in a state in which the temporary fixing portion 20 is joined, a part or all of the Z-folded portion 10 overlaps the central region when the pad type absorbent article 1 is divided into three in the longitudinal direction LD. preferable. The Z-folded portions 10 may be provided at one place in the front-rear direction LD as shown in the illustrated example, but may be provided in plural in the front-rear direction LD with or without intervals.

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

  When the pad type absorbent article 1 is used, 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 many cases. In this case, if the Z-folded portion 10 is located on the rear side of the pad-type absorbent article 1, the Z-folded portion 10 is disposed under the wearer's body, making it difficult to peel off the temporary fixing portion 20. It becomes. Therefore, it is also preferable that the Z-folded portion 10 be positioned on the front side of the center of the front-rear direction LD in the state before peeling off the temporary fixing portion 20 as illustrated. The “front side” means any one of the front and rear directions LD in the front and rear symmetrical shape without distinction between the front and rear.

  The Z-folded portion 10 may be folded so that the folding position of the first portion 11 and the third portion 13 is on the front side of the folding position of the second portion 12 and the third portion 13. However, as in the Z-folded portion 10 of the illustrated example, the folded position of the first portion 11 and the third portion 13 is folded back so as to be behind the folded position of the second portion 12 and the third portion 13 Is preferred. That is, in the latter case, after the pad-type absorbent article 1 is inserted between the body 100 and the outer 101, the rear end of the pad-type absorbent article 1 is pulled backward, thereby expanding the Z-folded portion 10 Since the force is applied to the first fixing portion 20, peeling of the temporary fixing portion 20 and expansion of the Z-folded portion 10 can be performed by one operation.

  Furthermore, in this case, as shown in FIG. 4C, the temporary fixing portion 20 is obtained by peelably joining the third portion 13 and the second portion 12, and the third portion 13 and the first portion 11 Is more preferably 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 by pulling the second portion 12 forward. Is peeled off from the third portion 13 so that the Z-folded portion 10 is unfolded. Therefore, not only the peeling force can be reduced because the number of bonding layers of the temporary fixing portion 20 is small, but also the direction of tensile force, the direction of peeling (the direction of bending), and the expansion direction of the Z-fold portion 10 coincide with each other. In particular, the peeling operation and the expanding operation of the temporary fixing portion 20 become easy. Moreover, since the number of bonding layers of the temporary fixing portion 20 is small, the manufacture becomes easy.

  On the other hand, although the pad type absorbent article 1 of the above example is developed over the entire length of use due to the peeling of the temporary tacking portion 20, as shown in FIG. It is also proposed to provide a perforation 31 for separating the portion including the joint portion 30 from the other portions.

  Bonding between the third portion 13 and at least one of the first portion 11 and the second portion 12 in the main bonding portion 30 is performed by material welding (ultrasonic seal or heat seal) as shown in FIG. 4A. In addition, as shown to FIG. 4 (b) (c), it can carry out by a hot-melt-adhesive. In addition, the junction part 30 in this example may be a junction part 30 which can be peeled off or not peeled off.

  In the pad type absorbent article 1 as well, since it can be inserted between the body 100 and the outer 101 with a total length shorter than that in use, it is possible to work in a state of being less likely to bend. Then, after aligning the pad type absorbent article 1 to a desired position, as shown in FIG. 10, the perforation 31 is separated to separate the portion 32 including the joint portion 30 and expand the Z-folded portion 10, It can be changed to the use state by extending the product length. In addition, the Z-folded portion 10 is a highly rigid portion in which three portions overlap, and functions as a reinforcing portion that prevents deformation of the pad-type absorbent article 1. Therefore, the pad-type absorbent article before peeling off the temporary fixing portion 20 The bending prevention property of 1 becomes even higher. And by such a bending suppression effect | action, mounting work becomes easy and smooth mounting work becomes possible.

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

  "Longitudinal (longitudinal) direction" means a direction connecting the ventral side (front side) and back side (rear side), and "width direction" means a direction (horizontal direction) orthogonal to the longitudinal direction.

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

  ・ "Surface" means the side closer to the skin of the wearer when wearing the pants-type disposable diaper of the member, and "back side" means the skin of the wearer when wearing the pants-type disposable diaper It means the far side.

  "Total light transmittance" means a value measured according to JIS-K7105.

  "Stretch rate" means the value when 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% To 49.0 g of the mixture), 1.0 g of the superabsorbent polymer is added, and the mixture is stirred by a stirrer. The formed gel is left in a constant temperature and humidity chamber at 40 ° C. × 60% RH for 3 hours and then returned to normal temperature, and the gel strength is measured with a curd meter (manufactured by I. techno Engineering: Curdmeter-MAX ME-500).

  ・ "Age" is measured as follows. After the sample or test piece is predried, it is left in a test room or apparatus under standard conditions (test place: temperature 23 ± 1 ° C., relative humidity 50 ± 2%) to be in a constant weight state. Pre-drying refers to bringing a sample or test piece to a constant weight in an environment at a temperature of 100 ° C. In addition, it is not necessary to perform preliminary drying about the fiber whose official moisture percentage is 0.0%. From a test piece in a constant weight state, using a template for sampling (100 mm × 100 mm), cut out a sample of 100 mm × 100 mm in size. The weight of the sample is measured, multiplied by 10 to calculate the weight per square meter, and taken as the basis weight.

- "thickness" is used automatic thickness measuring instrument (KES-G5 Handy Compression measurement program), load: 0.098 N / cm ^2, and the pressure area: automatically measured under the conditions of 2 cm ^2.

  The amount of water absorption is measured according to JIS K 7223-1996 “Test method of water absorption of highly water-absorbent resin”.

  -Water absorption rate is defined as "time to end point" when JIS K 7224-1996 "Water absorption rate test method for super absorbent polymer" using 2 g of highly absorbent polymer and 50 g of physiological saline. .

  "Expanded state" means a flat state without contraction or slack.

  -Unless otherwise indicated, the dimension of each part means the dimension in the unfolded state, not the natural length state.

  ・ If there is no description about the environmental conditions in the test or measurement, the test or measurement shall be performed in the test room or equipment under the standard condition (test place: temperature 23 ± 1 ° C, relative humidity 50 ± 2%) Do.

  The present invention is suitable for supplemental use to low birth weight infants, but can also be used as pad type absorbent articles for other uses.

  DESCRIPTION OF SYMBOLS 1 ... Pad type absorbent article, 10 ... Z-fold part, 100 ... Body, 101 ... Outer, 11 ... 1st part, 12 ... 2nd part, 13 ... 3rd part, 2 ... Top sheet, 20 ... Temporary attachment part 3: Liquid-impermeable sheet, 30: junction, 31: perforation, 4: absorbent, 5: side flap, 7: non-woven fabric, B: back side, C: crotch, F: front side, LD ... longitudinal direction, WD ... width direction.

Claims (8)

A crotch, and a front portion and a back portion extending respectively to the front and back sides of the crotch;
An absorber provided in a region including the crotch;
A liquid impermeable sheet covering the back side of the absorber;
A liquid-permeable top sheet covering the front side of the absorber;
In a pad type absorbent article provided with
At the middle of the longitudinal direction, there is a Z-folded portion in which the whole in the thickness direction is Z-folded in the longitudinal direction,
In the Z-folded portion, the third portion among the first portion located on the front side, the second portion located on the back side, and the third portion located between the first portion and the second portion, and the third portion Having a temporary fixing part releasably joined to at least one of the first part and the second part,
Pad type absorbent article characterized by the above-mentioned. It has a side flap portion without the absorber which extends laterally beyond the absorber;
The temporary fixing portion is provided only in a portion where the side flaps overlap in the Z-folded portion,
The pad type absorbent article according to claim 1. The dimension in the front-rear direction of the Z-folded portion is not less than 0.07 times and not more than 0.16 times the entire product length in a state where the temporary fixing portion is peeled off
The pad type absorbent article according to claim 1 or 2. The absorbent body has a narrow portion narrower than both sides in the front-rear direction at the middle in the front-rear direction including the crotch.
At least a portion of the Z-folded portion is provided at a position overlapping the constricted portion,
The pad type absorbent article of any one of Claims 1-3. The Z-folded portion is located forward of the center in the front-rear direction in the state before peeling off the temporary fixing portion.
The pad type absorbent article of any one of Claims 1-4. The Z-folded portion is folded such that the folding position of the first portion and the third portion is behind the folding position of the second portion and the third portion.
The pad type absorbent article of any one of Claims 1-5. The temporary fixing portion is obtained by releasably joining the third portion and the second portion, and the third portion and the first portion are not joined.
The pad type absorbent article according to claim 6. A crotch, and a front portion and a back portion extending respectively to the front and back sides of the crotch;
An absorber provided in a region including the crotch;
A liquid impermeable sheet covering the back side of the absorber;
A liquid-permeable top sheet covering the front side of the absorber;
In a pad type absorbent article provided with
The crotch has a Z-folded portion in which the whole in the thickness direction is Z-folded in the front-rear direction,
In the Z-folded portion, the third portion among the first portion located on the front side, the second portion located on the back side, and the third portion located between the first portion and the second portion, and the third portion And a joint portion joined to at least one of the first portion and the second portion,
Perforations are formed to separate the part including the joint from the other parts,
Pad type absorbent article characterized by the above-mentioned.

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