JP2020048818A5 - - Google Patents

Description

Connectable disposable wear items

The present invention relates to an articulated disposable wearable article called a tape-type disposable diaper or the like.

A typical articulated disposable wearable article has a crotch portion including the anterior-posterior center, a ventral portion extending anteriorly from the anterior-posterior center, and a dorsal portion extending posteriorly from the anterior-posterior center, at least the dorsal portion. Has wing portions extending from the crotch portion on both the left and right sides in the width direction. Further, a connecting tape (connecting tab) having a connecting portion that is detachably connected to the outer surface of the ventral side portion is attached to the wing portion. At the time of use, the wing portion is turned from both sides of the waist to the outer surface of the ventral portion, and the connecting portion of the connecting tape is connected to the outer surface of the ventral portion. Such an articulated disposable wear article is used not only for infants but also for long-term care (adult use) (see, for example, Patent Document 1).

Conventionally, as a connecting tape, the base end portion fixed to the wing portion, the main body portion extending from the base end portion, and the ventral side portion provided in the middle in the width direction of the main body portion are detachably connected. It is common to have a connecting portion and a non-connecting portion that is provided between the connecting portion and the base end portion and is not connected to the ventral portion.

In addition to being used for infants, such articulated disposable wear articles are widely used for nursing care (adult use), but have a problem that the waist and legs are easily loosened.

Then, as a solution to this problem, a connecting type disposable wear article in which the connecting tape can be divided into upper and lower two stages by perforations has also been proposed (see, for example, Patent Document 1). This articulated disposable wearable article is connected by pulling the first connecting tape on the waist side diagonally downward to firmly tighten the waist circumference and pulling the second connecting tape on the leg circumference side diagonally upward to connect. As a result, the legs can be tightened firmly, and a wearing state with excellent fit can be obtained.

However, in the case described in Patent Document 1, since the portion divided into the upper and lower two stages is limited to the connecting tape, the first connecting tape on the waist side is diagonally downward and the second connecting tape on the leg circumference side is diagonally upward. If you connect them to each other, large wrinkles will appear on the wings and the appearance will be poor.

Further, in the case described in Patent Document 1, since the portion divided into the upper and lower two stages is limited to the connecting tape, it is necessary to secure a certain length in the width direction of the connecting tape in order to take advantage of the advantage. .. However, since the connecting tape uses a relatively hard material in order to secure sufficient strength and facilitate cutting during manufacturing, the connecting tape becomes longer in the width direction of the connecting tape. It also has a problem that the hardness of the material has a great influence on the wearing feeling.

Japanese Unexamined Patent Publication No. 2005-160506

Therefore, a main object of the present invention is to provide a connected disposable wearable article in which wrinkles formed in the wing portion are reduced while a tightly fitted wearing state can be obtained by the upper and lower two-stage connecting tapes. It is in.

The articulated disposable wearable articles that have solved the above problems are as follows.
<First aspect>
It has a crotch part including the center in the anterior-posterior direction, a ventral part extending anteriorly from the center in the anterior-posterior direction, and a dorsal part extending posteriorly from the center in the anterior-posterior direction.
It has an absorber built in the range including the crotch part, and has an absorber.
The dorsal portion has a side flap portion extending laterally of the absorber.
The side flap portion of the dorsal portion has a wing portion extending outward in the width direction from the crotch portion.
It has a connecting tape attached to the wing portion of the dorsal portion and detachably connected to the ventral portion.
The connecting tape has a base end portion fixed to the wing portion, a main body portion extending from the base end portion, and a connecting portion provided on the main body portion to the ventral side portion. ,
In articulated disposable wear items
The connecting tape has a first connecting tape provided on the waist side side portion of the wing portion and a second connecting tape provided on the side portion on the leg circumference side of the wing portion.
The side flap portion has a perforation that continues inward in the width direction from between the first connecting tape and the second connecting tape at the side edge of the wing portion.
At least a portion of the side flap portion adjacent to the inner side of the inner end of the perforation has a front surface layer, a back surface layer, and an intermediate layer located between them.
A tear-preventing portion is formed in a portion of the intermediate layer adjacent to the inner end of the perforation, and no tear-preventing portion is formed in the front surface layer and the back surface layer.
An articulated disposable wearable item.

(Action effect)
In this connection-type disposable wearable article, at least a part of the wing portion is divided into upper and lower tiers by separating the perforations, and the upper tier portion having the first connecting tape on the waist side is connected while being pulled diagonally downward to connect the waist. The circumference of the leg can be firmly tightened by firmly tightening the circumference and connecting the lower portion having the second connecting tape on the side around the leg while pulling it diagonally upward. In particular, the wing part, which is not divided in the past, is divided into two stages and can be fitted independently around the waist and legs, respectively, so that a tighter fit can be obtained than the conventional one. Is.

Since this connection-type disposable wearable article is divided into upper and lower two stages by providing perforations on the side flaps, the first connection tape on the waist side is diagonally downward and the second connection on the leg circumference side. Even if the tapes are connected diagonally upward, large wrinkles are less likely to form on the wing portion, and the appearance is less likely to deteriorate.

In addition, if a perforation is provided in the side flap portion, and this perforation is separated from the side edge side and divided into upper and lower two stages, when the perforation is torn to the inner end, it is further inward than the inner end of the perforation. There is a risk of tearing the side flap part up to the part (hereinafter, also referred to as excessive tearing). On the other hand, it is desirable to provide a tear prevention portion as described in Patent Document 1. However, since the tear prevention portion described in Patent Document 1 is exposed on both the front and back surfaces, there is a problem that the appearance is impaired. On the other hand, in this connection type disposable worn article, since the tear prevention portion is provided only in the intermediate layer located inside the side flap portion, the tear prevention portion is exposed while having the tear prevention effect. It is possible to prevent deterioration of the appearance.

<Second aspect>
The widthwise dimension of the connecting tape is 1/7 to 1/2 times the widthwise dimension of the dorsal portion excluding the connecting tape.
The articulated disposable wear article of the first aspect.

(Action effect)
In this connecting type disposable wearable article, since the side flap portion is perforated, the dimension of the connecting tape in the width direction can be kept short. Therefore, in this connection-type disposable wearable article, it is possible to obtain a wearing state in which the upper and lower two-stage connecting tapes are tightly fitted, and it is possible to reduce the influence of the hardness of the connecting tape on the wearing feeling.

<Third aspect>
In the perforation, the width of the tie portion of the first portion located laterally from the middle in the width direction is wider than the width of the tie portion of the second portion located inward in the width direction than the first portion.
The articulated disposable wear article of the first or second aspect.

(Action effect)
In this way, if the first part from the beginning of tearing to a certain extent is difficult to tear and the second part after that is easy to tear, a situation occurs in which the perforations are unintentionally separated when used without separating the perforations. It will be difficult.

<Fourth aspect>
The tear prevention portion is a C-shaped cut portion or a punched hole formed adjacent to the inner side of the inner end of the perforation and in which the non-cut portion is located laterally.
A concatenated disposable wear article according to any one of the first to third aspects.

(Action effect)
These cut portions or punch holes disperse the stress generated at the tear position when the tear position exceeds the inner end of the perforation and reaches the cut portion or punch hole, and further inward than the cut portion or punch hole. It has the effect of preventing the side flaps from being torn up to the part. Therefore, it is possible to prevent the situation where the perforations are torn too much.

<Fifth aspect>
The tear prevention portion is at least a melt-solidified portion of the intermediate layer formed adjacent to the inner side of the inner end of the perforation.
A concatenated disposable wear article according to any one of the first to fourth aspects.

(Action effect)
Such a melt-solidified portion has higher strength against tearing than other portions. Therefore, when the tearing progresses beyond the inner end of the perforation, the tearing can be stopped at this melt-solidified portion. Such a melt-solidified portion can be formed by performing heat embossing or ultrasonic welding at an appropriate position in the intermediate layer.

<Sixth aspect>
A liquid-permeable top sheet that covers the front side of the absorber and
A liquid-impermeable sheet that covers the back side of the absorber and extends to the side of the absorber.
An exterior non-woven fabric that covers the back side of the liquid-impermeable sheet,
A root portion fixed to the area including the side flap, a main body portion extending from the root portion, an inverted portion in which both ends of the main body portion in the front-rear direction are fixed in an inverted state, and an anteroposterior lodging portion of the main body portion. A gathered sheet having a non-fixed raised portion located between the portions, and a raised gather having a gathered elastic member fixed to at least a tip portion of the raised portion.
A stretchable sheet that elastically expands and contracts in the width direction, which is provided at least over the left and right side flaps in the dorsal portion, is provided.
The side flap portion is formed of a gathered sheet, a top sheet, a liquid-impermeable sheet, and a portion of the exterior nonwoven fabric located laterally to the absorber.
The gather sheet and the exterior non-woven fabric extend from the inner end of the perforation to the outside.
The top sheet and the liquid permeable sheet extend only inward from the inner end of the perforation.
The telescopic sheet extends laterally to at least a portion of the side flap portion adjacent to the inward side of the inner end of the perforation.
The front surface layer is the gather sheet, and the back surface layer is the exterior non-woven fabric.
The intermediate layer is the elastic sheet.
A concatenated disposable wear article according to any one of the first to fifth aspects.

(Action effect)
In the articulated disposable wear article, in order to reduce the amount of the top sheet and the liquid permeable sheet used, it often does not extend to the side edge of the side flap portion. On the other hand, it is known that the above-mentioned elastic sheet is attached to the inside of the back side portion of the tape type disposable diaper to improve the fit around the waist. Therefore, it is preferable to extend this elastic sheet laterally and use it as an intermediate layer having a tear prevention portion.

<7th aspect>
A liquid-permeable top sheet that covers the front side of the absorber and
A liquid-impermeable sheet that covers the back side of the absorber and extends to the side of the absorber.
An exterior non-woven fabric that covers the back side of the liquid-impermeable sheet,
A root portion fixed to the area including the side flap, a main body portion extending from the root portion, an inverted portion in which both ends of the main body portion in the front-rear direction are fixed in an inverted state, and an anteroposterior lodging portion of the main body portion. It is provided with a gathered sheet having a non-fixed raised portion located between the portions, and a raised gather having a gathered elastic member fixed to at least a tip portion of the raised portion.
The side flap portion is formed of a gathered sheet, a top sheet, a liquid-impermeable sheet, and a portion of the exterior nonwoven fabric located laterally to the absorber.
The gather sheet and the exterior non-woven fabric extend from the inner end of the perforation to the outside.
The liquid-impermeable sheet extends only inward from the inner end of the perforation.
The top sheet extends laterally to at least a portion of the side flap portion adjacent to the inward side of the inner end of the perforation.
The front surface layer is the gather sheet, and the back surface layer is the exterior non-woven fabric.
The intermediate layer is the top sheet.
A concatenated disposable wear article according to any one of the first to fifth aspects.

(Action effect)
As in this embodiment, it is also preferable to extend the top sheet sideways and use it as an intermediate layer having a tear prevention portion.

According to the present invention, there are advantages such as reduction of wrinkles formed in the wing portion while a tightly fitted wearing state can be obtained by the upper and lower two-stage connecting tapes.

It is a top view which shows the inner surface of the articulated disposable wear article in the unfolded state. It is a top view which shows the outer surface of the articulated disposable wear article in the unfolded state. 6-6 is a cross-sectional view taken along the line 6-6 of FIG. FIG. 7 is a cross-sectional view taken along the line 7-7 of FIG. (A) is a sectional view taken along line 8-8 of FIG. 1, and (b) is a sectional view taken along line 9-9 of FIG. FIG. 5 is a cross-sectional view taken along the line 5-5 of FIG. It is (a) plan view and (b) sectional view of the telescopic sheet. It is a perspective view which shows the wearing state. It is an enlarged plan view which shows the wing part in the unfolded state. It is an enlarged plan view which shows the wing part in the unfolded state. It is an enlarged plan view which shows the wing part in the unfolded state. It is an enlarged plan view which shows the wing part in an open state. It is an enlarged plan view which shows the wing part in an open state. It is a cross-sectional view corresponding to the cross section of line 5-5 of FIG. It is an enlarged plan view which shows the wing part in an open state. It is a cross-sectional view corresponding to the cross section of line 5-5 of FIG.

1 to 6 show an example of a connected disposable wear article, in which reference numeral X indicates the entire width of the diaper excluding the connecting tape, and reference numeral L indicates the total length of the diaper, which is a cross-sectional view. The dotted pattern portion in the above indicates a hot melt adhesive as a joining means for joining the constituent members located on the front side and the back side thereof. The hot melt adhesive can be applied by a known method such as slot coating, continuous linear or dotted bead coating, spiral or Z-shaped spray coating, or pattern coating (transfer of hot melt adhesive by letterpress method). Can be applied. Instead of or in conjunction with this, at the fixed portion of the elastic member, a hot melt adhesive can be applied to the outer peripheral surface of the elastic member to fix the elastic member to the adjacent member. 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 a joining means for joining each component member, a means by material welding such as a heat seal or an ultrasonic seal can also be used.

This articulated disposable wearable article includes a crotch portion M including the center of the anterior-posterior LD, a ventral portion F extending anteriorly from the center of the anterior-posterior LD, and a dorsal portion B extending posteriorly from the center of the anterior-posterior LD. have. In addition, this articulated disposable wearable article includes an absorber 56 built in a range including the crotch portion M, a liquid-permeable top sheet 30 that covers the front side of the absorber 56, and a non-woven fabric that covers the back side of the absorber 56. It has a permeable sheet 11 and an exterior non-woven fabric 12 that covers the back side of the liquid permeable sheet and constitutes the outer surface of the product.

Hereinafter, the materials and characteristic parts of each part will be described in order.
(Absorber)
The absorber 56 is a portion that absorbs and retains the excrement liquid, and can be formed by an aggregate of fibers. The fiber aggregate is obtained by stacking short fibers such as cotton-like pulp and synthetic fibers, and by opening the tow (fiber bundle) of synthetic fibers such as cellulose acetate as necessary. Can also be used. The basis weight of fibers, when fiber stacking flocculent pulp or short fibers, for example, be a 100 to 300 g / m ² approximately, in the case of a filament aggregate, for example, be 30 to 120 g / m ² approximately Can be done. In the case of synthetic fibers, the fineness is, for example, 1 to 16 dtex, preferably 1 to 10 dtex, and more preferably 1 to 5 dtex. In the case of a filament aggregate, the filament may be a non-crimped fiber, but is preferably a crimped fiber. The degree of crimping of the crimped fibers can be, for example, 5 to 75 fibers per 2.54 cm, preferably 10 to 50 fibers, and more preferably about 15 to 50 fibers. In addition, uniformly crimped crimped fibers can be used.

(Highly absorbent polymer particles)
The absorber 56 may contain highly absorbent polymer particles in part or all of it. The highly absorbent polymer particles include "powder" in addition to "particles". As the highly absorbent polymer particles, those used for this kind of absorbent article can be used as they are. The particle size of the highly absorbent polymer particles is not particularly limited, but for example, sieving (shaking for 5 minutes) using a standard sieve (JIS Z8801-1: 2006) of 500 μm, and particles falling under the sieve by 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 the top is 60% by weight or more.

The material of the highly absorbent polymer particles can be used without particular limitation, but those having a water absorption of 40 g / g or more are preferable. Highly absorbent polymer particles include starch-based, cellulosic-based and synthetic polymer-based ones, which are starch-acrylic acid (salt) graft copolymers, saponified starch-acrylonitrile copolymers, and crosslinked sodium carboxymethyl cellulose. A substance or an acrylic acid (salt) polymer or the like can be used. As the shape of the highly absorbent polymer particles, a powder or granular material that is usually used is preferable, but other shapes can also be used.

As the highly absorbent 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, so-called reversion, in which the liquid supplied into the absorber 56 returns to the outside of the absorber 56, is likely to occur.

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

The basis weight of the highly absorbent polymer particles can be appropriately determined according to the amount of absorption required for the application of the absorber 56. Therefore, although it cannot be said unconditionally, it can usually be set to 50 to 350 g / m ² .

(Packaging sheet)
The absorber 56 can be incorporated as an absorbent element 50 wrapped in a packaging sheet 58 in order to prevent the highly absorbent polymer particles from coming off or to improve the shape retention of the absorber 56. As the packaging sheet 58, tissue paper, particularly crepe paper, non-woven fabric, polylami non-woven fabric, a sheet having small holes, or the like can be used. However, it is desirable that the sheet does not allow the highly absorbent polymer particles to escape. When a non-woven fabric is used instead of the crepe paper, a hydrophilic SMMS (spunbond / meltblown / meltblown / spunbond) non-woven fabric is particularly preferable, and polypropylene, polyethylene / polypropylene or the like can be used as the material. The fiber basis weight is preferably 5 to 40 g / m ² , especially 10 to 30 g / m ² .

As shown in FIG. 3, the packaging sheet 58 has a structure in which one sheet wraps the entire absorber 56, or a plurality of sheets such as two upper and lower sheets may wrap the entire absorber 56 . The packaging sheet 58 may be omitted.

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

The top sheet 30 extends from the front end to the rear end of the product in the front-rear direction and extends laterally from the absorber 56 in the width direction WD. For example, the starting point of the rising gather 60 described later is more than the side edge of the absorber 56. If necessary, such as when the top sheet 30 is located on the center side in the width direction, the width of the top sheet 30 can be made shorter than the total width of the absorber 56, and the like can be appropriately deformed.

(Intermediate sheet)
An intermediate sheet (also referred to as a "second sheet") 40 can be provided on the back side of the top sheet 30 in order to prevent the liquid that has permeated the top sheet 30 from returning. The intermediate sheet 40 may be omitted.

As the intermediate sheet 40, various non-woven fabrics can be preferably used, and a particularly bulky air-through non-woven fabric can be preferably used. It is preferable to use a composite fiber having a core-sheath structure for the air-through non-woven fabric. In this case, the resin used for the core may be polypropylene (PP), but polyester (PET) having high rigidity is preferable. Basis weight is preferably ^{17~80g / m 2, 25~60g / m} 2 is more preferable. The thickness of the raw material fiber of the non-woven fabric is preferably 2.0 to 10 dtex. In order to make the non-woven fabric bulky, it is also preferable to use eccentric fibers having no core in the center, hollow fibers, and eccentric and hollow fibers as mixed fibers of all or a part of the raw material fibers.

Although the intermediate sheet 40 of the illustrated example is arranged in the center shorter than the width of the absorber 56, 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 including the excretion position as shown in the illustrated example.

(Liquid impermeable sheet)
Liquid impervious sheet 11, is not particularly limited, and is preferably has a moisture permeability. The liquid-impermeable sheet 11 is microporous obtained by kneading an inorganic filler in an olefin resin such as polyethylene or polypropylene, forming the sheet, and then stretching the sheet in the uniaxial or biaxial direction. The sheet can be preferably used. Further, as the liquid-impermeable sheet 11, a non-woven fabric as a base material with improved waterproofness can also be used.

It is desirable that the liquid-impermeable sheet 11 extends in the same or wider range as the absorber 56 in the front-rear direction LD and the width direction WD, but if necessary, such as when other impermeable means is present, it may be necessary. It is also possible to have a structure that does not cover the end portion of the absorber 56 in the front-rear direction LD and the width direction WD.

(Exterior non-woven fabric)
The exterior non-woven 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 non-woven fabric can be used alone or in layers. In the latter case, it is preferable to bond the non-woven fabrics to each other with a hot melt adhesive or the like. When a non-woven fabric is used, it is preferable that the constituent fibers have a fineness of 1.0 to 3.5 dtex, a basis weight of 10 to 50 g / m ² , and a thickness of 1 mm or less.

(Get up gather)
In order to prevent excrement that travels laterally along the top sheet 30 and prevent so-called lateral leakage, rising gathers 60 that stand up on the skin side of the wearer are provided on both sides of the surface widthwise WD. Is preferable. Of course, the rising gather 60 can be omitted.

When the rising gather 60 is adopted, its structure is not particularly limited, and any known structure can be adopted. In the raised gather 60 of the illustrated example, the root portion 65 fixed to the area including the side flaps, the main body portion 66 extending from the root portion, and both ends of the main body portion 66 in the front-rear direction are fixed in an inverted state. A gather sheet 62 having a non-fixed raised portion 68 located between the front and rear inverted portions 67 of the portion 67 and the main body portion 66, and a gather elastic member 63 fixed to at least the tip portion of the raised portion 68. It has become. A water-repellent non-woven fabric can be used as the gather sheet 62, and thread rubber or the like can be used as the gather elastic member 63. As shown in FIGS. 1 and 2, a plurality of gather elastic members 63 may be provided, or one gather elastic member 63 may be provided.

The inner surface of the gather sheet 62 has a joint start end in the width direction on the side portion of the top sheet 30, and the portion outside the width direction from the joint start end is the inner surface of each side flap portion SF, that is, liquid opaque in the illustrated example. It is bonded to the side portion of the sex sheet 11 and the side portion of the exterior nonwoven fabric 12 located outside in the width direction by a hot melt adhesive or the like.

Around the legs, the inside of the rising gather 60 in the width direction from the joint start end is fixed on the top sheet 30 at both ends in the front-rear direction of the product, but the part between them is a non-fixed free part, and this free part is It rises due to the contraction force of the elastic member 63 and comes into close contact with the body surface.

(End flap part, side flap part)
In the illustrated example, the articulated disposable wear article has a pair of end flaps EF having no absorber 56 extending to the front side and the rear side of the absorber 56, respectively, and lateral to both side edges of the absorber 56. It has a pair of side flap portions SF having no absorber 56, which extend to each of the above. As shown in the illustrated example, the side flap portion SF may be made of a material (exterior non-woven fabric 12 or the like) continuous from the portion having the absorber 56, or may be formed by attaching another material.

(Plane gather)
A side elastic member 64 made of an elongated elastic member such as rubber thread is fixed to each side flap portion SF in a state of being extended along the front-rear direction LD, whereby the leg circumference portion of each side flap portion SF is fixed. Is configured as a plane gather. As shown in the illustrated example, the leg circumference elastic member 64 is provided between the gather sheet 62 and the liquid permeable sheet 11 on the outer side in the width direction near the joint start end in the joint portion of the gather sheet 62, and also has a side flap portion. It can also be provided between the liquid-impermeable sheet 11 and the exterior non-woven fabric 12 in SF. A plurality of elastic members 64 around the legs may be provided on each side as shown in the illustrated example, or only one elastic member 64 may be provided on each side.

The plane gather is a portion on which the contraction force of the side elastic member 64 acts (a portion in which the side elastic member 64 is shown in the drawing). Therefore, in addition to the form in which the side elastic member 64 exists only in the flat gathered portion, the side elastic member 64 exists on the front side, the rear side, or both sides of the flat gathered portion, but the side elastic member 64 exists in other than the flat gathered portion. When the member is finely cut in one place or many places, is not fixed to the sheet sandwiching the side elastic member 64, or both, the contraction force acts on the parts other than the flat gather. It also includes a structure in which the contractile force of the side elastic member 64 acts only on the flat gathered portion (substantially equivalent to not providing the elastic member).

(Wing part)
In this articulated disposable wearable article, the dorsal portion B has a wing portion WP extending outward of the WD in the width direction from the crotch portion M. Similarly, the ventral portion F also has a wing portion WP extending outward of the WD in the width direction from the crotch portion M. These wing portion WPs can also be formed by a member different from the other portions. However, in the structure having the side flap portion SF as shown in the illustrated example, the concave shape from the side edge of the crotch portion M to the lower edge 71 of the wing portion by cutting the middle of the LD in the front-rear direction at the side portion of the side flap portion SF. It is preferable that the edge 70 is formed and the wing portion WP is formed as a result because the production is easy.

(Connecting tape)
As shown in FIGS. 1, 2 and 6, the wing portion WP in the dorsal portion B is provided with connecting tapes 80A and 80B which are detachably connected to the outer surface of the ventral portion F, respectively. .. When wearing the diaper 10, the connecting tapes 80A and 80B are turned from both sides of the waist to the outer surface of the ventral portion F, and the connecting portions 83 of the connecting tapes 80A and 80B are connected to the appropriate positions on the outer surface of the ventral portion F.

As shown in FIGS. 6 and 7, the connecting tapes 80A and 80B include a base end portion 81 fixed to the wing portion WP and a sheet base material 80S forming a main body portion 82 extending from the base end portion 81. The sheet base material 80S has a connecting portion 83 with respect to the ventral portion F provided in the middle portion of the main body portion 82 in the width direction WD. In the main body 82, the base end 81 side of the connecting portion 83 is a non-connecting portion 84 that is not connected to the ventral portion F, and the opposite side is a knob portion 85. The non-connecting portion 84 and the knob portion 85 are composed of only the sheet base material 80S forming the main body portion 82. The side edge of the base end portion 81 may coincide with the side edge of the wing portion WP, or as shown in FIG. 6, is slightly separated inward in the width direction WD from the side edge of the wing portion WP. May be good. This separation distance can be about 10 to 50 mm. The inner edge of the connecting portion 83 in the width direction may coincide with the side edge of the wing portion WP, but as shown in FIG. 6, the side edge of the wing portion WP is sufficiently outward in the width direction WD. It is preferable that they are separated. This separation distance can be about 1 to 100 mm.

As the connecting portion 83, a hook material (male material) for a mechanical fastener (hook-and-loop fastener) may be provided, or an adhesive layer may be provided. The hook material has a large number of engaging protrusions on its connecting surface, and the shapes of the engaging protrusions are (A) -shaped, (B) J-shaped, (C) mushroom-shaped, and (D). There are T-shapes, (E) double J-shapes (shapes in which J-shapes are joined back to back), and the like, but any shape may be used.

Further, as the sheet base material 80S forming the base end portion 81 to the main body portion 82, a non-woven fabric, a plastic film, a polylace non-woven fabric, paper or a composite material thereof can be used, but the fineness is 1.0 to 3.5 dtex. , Spunbonded non-woven fabric, air-through non-woven fabric, or spunlaced non-woven fabric having a texture of 60 to 100 g / m ^{2 and a thickness of 1 mm or less is preferable.}

In the connecting tapes 80A and 80B, at least a part of the non-connecting portion 84 may expand or contract in the width direction WD, or the entire connecting tape 80A or 80B may not expand or contract.

(Target part)
A target portion 20 is provided at a connecting portion of the connecting tapes 80A and 80B in the ventral portion F. As shown in the illustrated example, the target portion 20 can be provided by attaching a sheet material for facilitating connection to the outer surface of the ventral portion F.

The sheet material for forming the target portion 20 is not particularly limited, but when the connecting portion 83 is a hook material, long fibers in which fibers are partially welded to each other by, for example, ultrasonic welding of an intermittent pattern. Non-woven fabric can be used.

Further, when the connecting portion 83 is a hook material, a large number of loop threads in which the engaging protrusions of the hook material are entangled are sewn on the surface of the base material made of a plastic film or a non-woven fabric as a sheet material for forming the target portion 20. It is possible to use the composite sheet material obtained.

Further, when the connecting portion 83 is a hook material and the connecting portion of the connecting tapes 80A and 80B in the ventral portion F is made of a non-woven fabric (for example, when the exterior non-woven fabric 12 is provided as shown in the illustrated example), the target portion 20 is used. It is also possible to connect the hook material by entwining the fibers of the exterior nonwoven fabric 12 with the target portion 20 at an appropriate position of the exterior nonwoven fabric 12 without adding a sheet material for forming.

On the other hand, when the connecting portion 83 is an adhesive layer, the surface of the sheet material made of a plastic film having a smooth surface, which is rich in adhesiveness, is peeled off as the sheet material for forming the target portion 20. Can be used.

(Expandable sheet)
An elastic sheet 17 elastically expands and contracts in the width direction WD is attached between the left and right connecting tapes 80A and 80B in the back side portion B, and the region having the elastic sheet 17 elastically expands and contracts in the width direction WD. Is preferable. The elastic sheet 17 may be located only on the end flap portion EF, but if it is arranged so as to extend from the end flap portion EF to the rear end portion of the absorber 56 as shown in the illustrated example, the elastic sheet 17 may be located on the absorber 56. It is preferable because the rear end is firmly pressed against the body.

As the elastic sheet 17, a sheet-like elastic member such as a rubber sheet may be used, but it is preferable that the elastic sheet 17 has breathability. In this case, a sheet-like elastic member having breathability such as a stretchable non-woven fabric can be used, but as shown in FIGS. 5 and 7, the support layer 18 of the two non-woven fabrics and the like is adhered with a hot melt adhesive or the like. It is preferable that the elastic members 19 such as a perforated sheet, net, and elongated (thread-like or string-like) are fixed between the support layers 18 in a stretched state along the width direction WD while being bonded with an agent. Used for. As the material of the support layer 18 in this case, the same material as that of the exterior non-woven fabric 12 can be used. The elongation rate of the elastic member 19 is preferably about 150 to 250%. When an elongated elastic member 19 (thread-like or string-like) is used, 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 and 19 d.

The width of the telescopic sheet 17 can be appropriately determined, but it is preferable that the width extends between the left and right side flap portions SF as shown in the illustrated example. As a specific dimension, the width of the elastic sheet 17 is preferably about 80 to 95% of the total width X of the main body portion excluding the connecting tapes 80A and 80B.

Both ends of the widthwise WD of the telescopic sheet 17 may be non-stretchable regions 17n in order to be held and attached by suction during manufacturing. The dimensions of the non-stretchable region 17n and the dimensions of the intermediate stretchable region 17e located between them and expanding and contracting in the width direction WD can be appropriately determined, but the width of the intermediate stretchable region 17e is determined by the left and right connecting tapes 80A, which will be described later. The width between the connecting portions 83 of 80B is preferably 45 to 90%, and the width of the non-stretchable region 17n is preferably about 5 to 50 mm in order to prevent shrinkage and curling during manufacturing. The non-stretchable region 17n may be a region that does not have the elastic member 19, but the elastic member 19 is attached over the intermediate stretchable region 17e and the non-stretchable region 17n, and the elastic member 19 is cut in the non-stretchable region 17n, so that the non-stretchable region 17n is non-stretchable. A structure may be formed in which the elastic member 19 remains in the region 17n but hardly expands or contracts at all.

Further, a part of the elastic member 19 may be arranged so as to cross the absorber 56, but as shown in FIG. 7, a part or the whole of the portion where the elastic member 19 overlaps with the absorber 56 is cut. As a result, if the structure is such that the elastic member 19 remains but hardly expands or contracts at all, the rear end portion of the absorber 56 does not shrink in the width direction, so that the fit is further improved.

In the illustrated example, the stretchable sheet 17 is arranged between the liquid-impermeable sheet 11 and the absorbing element 50, but the arrangement is not particularly limited. For example, the stretchable sheet 17 may be arranged between the liquid-impermeable sheet 11 and the exterior nonwoven fabric 12, or may be provided outside the exterior nonwoven fabric 12.

(Perforations)
Characteristically, as shown in an enlarged manner in FIG. 9, the first connecting tape 80A provided on the waist side (rear side) side of the wing portion WP and the leg circumference side (front side) of the wing portion WP. It is provided with a second connecting tape 80B provided on the side portion. The side flap portion SF has a perforation 90 that continues inward in the width direction WD from between the first connecting tape 80A and the second connecting tape 80B at the side edge of the wing portion WP.

When used, this articulated disposable wear article has at least a part of the wing portion WP divided into upper and lower two stages by separating the perforation 90, and has a first connecting tape 80A on the waist side as shown in FIG. By pulling the upper part UP diagonally downward and connecting it, the waist circumference is firmly tightened, and by connecting the lower part LP having the second connecting tape 80B on the leg circumference side while pulling diagonally upward, the leg circumference is firmly tightened. Can be tightened. In particular, the wing portion WP, which is not divided in the past, is divided into two stages and can be fitted independently according to the waist circumference and the leg circumference, respectively, so that a more tightly fitted wearing state can be obtained than the conventional one. It is a thing. The connecting position of the first connecting tape 80A and the second connecting tape 80B can be appropriately determined by the user, and as shown in FIG. 8A, the positional relationship of the connecting portion 83 is not upside down and the connecting portion is connected. The 83s may not overlap each other, or as shown in FIG. 8B, the positional relationship of the connecting portions 83 may be reversed upside down so that the connecting portions 83 do not overlap each other, although not shown. , The connecting portions 83 may partially overlap each other. Further, if necessary, the perforation 90 can be used without being separated.

Moreover, since this connection-type disposable wearable article is to be divided into upper and lower two stages by providing perforations 90 on the side flap portion SF, the first connection tape 80A on the waist side is diagonally downward and on the leg circumference side. Even if the second connecting tapes 80B are connected diagonally upward, large wrinkles are less likely to form on the wing portion WP and the appearance is less likely to deteriorate.

In this connection type disposable wearable article, since the perforation 90 is formed in the side flap portion SF, the dimension 80w in the width direction WD of the connection tapes 80A and 80B can be suppressed short. For example, the dimension 80w of the width direction WD of the connecting tapes 80A and 80B can be 1/7 to 1/2 times the dimension X of the width direction WD of the portion of the dorsal portion B excluding the connecting tapes 80A and 80B. .. As a result, in this connection-type disposable wearable article, the mounting state in which the connecting tapes 80A and 80B are tightly fitted can be obtained, but the hardness of the connecting tapes 80A and 80B has a small effect on the wearing feeling. can do. The dimensions of the front-rear LD of the connecting tapes 80A and 80B can be appropriately determined, but can be, for example, less than 1/2 of the dimensions of the front-rear LD of the side edge of the wing portion WP.

The first connecting tape 80A and the second connecting tape 80B may have the same dimensions and shape as shown in the illustrated example, or at least one of the dimensions and the shape may be different. The first connecting tape 80A and the second connecting tape 80B may be attached unevenly to the waist side or the leg circumference side of the wing portion WP, but usually, the waist side from the center portion of the LD in the front-rear direction of the wing portion WP. It is preferable that the first connecting tape 80A is attached to the wing portion WP, and the second connecting tape 80B is attached to the leg circumference side of the wing portion WP in the front-rear direction LD center portion. Since the perforation 90 is formed between the first connecting tape 80A and the second connecting tape 80B, the first connecting tape 80A and the second connecting tape 80B have a sufficient distance in the front-rear direction LD, for example, a distance of 15 mm or more. However, they may be adjacent to each other as long as the perforations 90 can be formed.

The vertical position of the perforation 90 is located at the center of the front-rear LD between the first connecting tape 80A and the second connecting tape 80B, and even if it is biased toward the first connecting tape 80A, the second It may be biased toward the connecting tape 80B side. Normally, the perforation 90 is preferably located within a range of ± 5 mm in the front-rear direction LD with reference to the center of the front-rear direction LD of the wing portion WP.

The size of the WD in the width direction of the perforation 90 can be appropriately determined, but it is preferably 15 mm or more, and particularly preferably 40 mm or more. Further, as shown in FIGS. 6 and 7, it is preferable that the inner inclusion end of the perforation 90 is located laterally from the side edge of the top sheet 30 and the side edge of the liquid impermeable sheet 11.

The number of perforations 90 is one as shown in the illustrated example, or a plurality of perforations may be provided. Further, the perforation 90 may be branched into a portion extending diagonally upward and a portion extending diagonally downward in the middle of the width direction WD as in the example shown in FIG.

The shape of the cut portion (cut) at the perforation 90, the ratio of the lengths of the cut portion and the tie portion (connecting portion between the cut portions), and the like can be appropriately determined. As shown in FIG. 10, in the perforation 90, the width of the tie portion 91t of the first portion 91 located to the side of the middle of the width direction WD is located inside the width direction WD of the first portion 91. It is one preferable example to make the width of the tie portion 92t of the two portions 92 wider than the width of the tie portion 92t. The tie portion is the width of the non-cut portion between the adjacent cut portions 91c and 92c, and is equal to the distance between the adjacent cut portions 91c and 92c. In this way, if the first portion 91 from the beginning of tearing to a certain extent is difficult to tear, and the second portion 92 thereafter is easy to tear, the perforation 90 is unintentionally separated when the perforation 90 is used without being separated. The situation is less likely to occur.

(Tear prevention part)
If the side flap portion SF is provided with the perforation 90, when the perforation 90 is torn to the inner end, the side flap portion SF may be torn to a portion further inward than the inner end of the perforation 90. be. In order to solve this problem, in the examples shown in FIGS. 6, 7, 9 to 12, at least the portion of the side flap portion SF adjacent to the inner end of the inner end of the perforation 90 is used as a surface layer. It has a gather sheet 62, an exterior non-woven fabric 12 as a back surface layer, and a stretchable sheet 17 as an intermediate layer located between them, and is a portion of the stretchable sheet 17 adjacent to the inner side of the inner end of the perforation 90. The tear prevention portions 95 to 97, which will be described later, are formed, and the tear prevention portions 95 to 97 are not formed on the gather sheet 62 and the exterior non-woven fabric 12. When the tear prevention portions 95 to 97 are provided only on the elastic sheet 17 located inside the side flap portion SF in this way, the appearance due to the tear prevention portions 95 to 97 being exposed while having the tear prevention effect. Can be prevented from deteriorating.

The portion of the side flap portion SF that is adjacent to at least the inner end of the perforation 90 on the inner side is not particularly limited as to what the front surface layer, the intermediate layer, and the back surface layer are. In a structure without three-dimensional gathers, the top sheet 30 can be extended laterally to form a surface layer, or a separate sheet that is not an extension of the existing member is provided as a surface layer regardless of the presence or absence of three-dimensional gathers. You can also. Further, in the structure without the exterior nonwoven fabric 12, the liquid-impermeable sheet 11 can be extended laterally to form the back surface layer, and regardless of the presence or absence of the exterior nonwoven fabric 12, it is not an extension of the existing member. The sheet can also be provided as a back surface layer. In the structure in which the elastic sheet 17 is not provided, as shown in FIGS. 13 and 14, the top sheet 30 is extended laterally to form an intermediate layer, and a tear prevention portion (a melt-solidified portion 97 described later in the illustrated example) is provided therein. As shown in FIGS. 15 and 16, a dedicated sheet 98, which is not an existing member, is provided regardless of the presence or absence of the telescopic sheet 17, and a tear prevention portion (the illustrated example is a melt-solidification portion 97 described later) is provided therein. ) Can be provided.

The tear prevention unit 95 to 97 is not particularly limited, but for example, the following can be adopted. These tear prevention units 95 to 97 can be applied in combination as appropriate. Further, as in the example shown in FIG. 12, when there are a plurality of inner ends of the perforations 90, tear prevention portions 95 to 97 can be provided for each perforation 90.

That is, as shown in FIGS. 9, 10 and 12, the first tear prevention portion is formed so as to be adjacent to the inner side of the inner end of the perforation, and the non-cut portion is located laterally. The C-shaped cut portion 95. Further, as shown in FIG. 11, the second tear prevention portion is a punched hole 96 formed adjacent to the inner side of the inner end of the perforation. These cut portions 95 or punch holes 96 disperse the stress generated at the tear positions when the tear position exceeds the inner end of the perforation 90 and reaches the cut portion 95 or the punch holes 96, and the cut portion 95 or the punch holes 96 are punched. It has an effect of preventing the side flap portion SF from being torn to a portion further inward than the hole 96. Therefore, it is possible to prevent the situation where the perforation 90 is torn too much. The shape of the punched hole 96 may be a circular shape as shown in the figure, or an appropriate shape such as an ellipse or a polygon. The dimensions of the cut portion 95 or the punched hole 96 can be appropriately determined. For example, the dimension of the LD in the front-rear direction can be about 3 to 7 mm, and the dimension of the WD in the width direction can be about 3 to 7 mm.

As shown in FIGS. 13 to 16, the third tear prevention portion is a melt-solidified portion 97 of at least an intermediate layer formed adjacent to the inner side of the inner end of the perforation 90. Such a melt-solidified portion 97 has higher strength against tearing than other portions. Therefore, when the tearing progresses beyond the inner end of the perforation 90, the melting and solidifying portion 97 can stop the tearing. Such a melt-solidified portion 97 can be formed by performing heat embossing or ultrasonic welding at an appropriate position in the intermediate layer. The intermediate layer of the example shown in FIGS. 13 and 14 is the top sheet 30, and the intermediate layer of the example shown in FIGS. 15 and 16 is the dedicated sheet 98. The intermediate layer is the elastic sheet 17. When the molten and solidified portion 97 is provided in the laminated structure like the telescopic sheet 17, the entire stretchable sheet 17 in the thickness direction may be subjected to pressure welding to form the melted and solidified portion 97, or a part thereof. The melt-solidified portion 97 may be formed by performing pressure welding processing only on the sheet of. The shape of the melt-solidified portion 97 may be a rectangle having long sides along the front-rear direction as shown in the figure, or an appropriate shape such as another polygon, a circle, or an ellipse. The dimensions of the melt-solidified portion 97 can be appropriately determined, and for example, the dimension of the LD in the front-rear direction can be about 5 to 20 mm, and the dimension of the WD in the width direction can be about 5 to 20 mm.

An intermediate layer (expandable sheet 17 in the examples shown in FIGS. 6, 7, 9 to 12, top sheet 30 in the examples shown in FIGS. 13 and 14, and dedicated sheet 98 in the examples shown in FIGS. 15 and 16). The side edge located on the outside of the WD in the width direction may be located between the inner end of the perforation 90 and the tear prevention portions 95 to 97, but extends halfway through the perforation 90 as shown in the illustrated example. It is preferable to have it. In this case, since the perforation 90 is easily torn from the beginning to reach the intermediate layer and is difficult to be torn after that, it is possible to prevent a situation in which the perforation 90 is torn too much at the momentum of the start of tearing.

(Non-woven fabric)
As the non-woven fabric in the above description, a known non-woven fabric can be appropriately used depending on the site and purpose. Examples of 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 recycled rayon and cupra. Fibers, natural fibers 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, the constituent fibers of the non-woven fabric are hydrophobic fibers or water-repellent fibers (water-repellent fibers made water-repellent by the water-repellent agent) even if they are hydrophilic fibers (including those made hydrophilic by the hydrophilic agent). Includes). 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.

<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 direction" means the direction indicated by the symbol LD in the figure (vertical direction), and the "width direction" means the direction indicated by the WD in the figure (horizontal direction), and the front-back direction and the width direction. Are orthogonal.

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

-"Elongation rate" means a value when the natural length is 100%. For example, an elongation rate of 200% is synonymous with an elongation 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-exchanged water: 97.09 wt%) Add 1.0 g of highly absorbent polymer to 49.0 g 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 under standard conditions (test location: temperature 23 ± 1 ° C., relative humidity 50 ± 2%) to bring it to a constant weight. Pre-drying refers to making a sample or test piece constant in an environment at a temperature of 100 ° C. It is not necessary to pre-dry the fibers having an official moisture content of 0.0%. From the test piece in a constant amount, a sample having a size of 100 mm × 100 mm is cut out using a sampling 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 the basis weight.

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

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

-"Water absorption rate" is 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. And.

-If there is no description about the environmental conditions in the test or measurement, the test or measurement shall be performed 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 mean the dimensions in the unfolded state, not in the natural length state.

The present invention is applicable to the articulated disposable wear articles as in the above example.

11 ... Liquid permeable sheet, 12 ... Exterior non-woven fabric, 17 ... Elastic sheet, 80A, 80B ... Connecting tape, 83 ... Connecting part, 82 ... Main body part, 81 ... Base end part, 20 ... Target part, 30 ... Top sheet , 40 ... Intermediate sheet, 50 ... Absorbent element, 56 ... Absorber, 58 ... Packaging sheet, 60 ... Rise gather, 62 ... Gather sheet, 64 ... Side elastic member, 70 ... Concave edge, 71 ... Lower edge of wing part, B ... dorsal part, F ... ventral part, LD ... front-back direction, M ... crotch part, SF ... side flap part, WD ... width direction, WP ... wing part, 80A ... first connecting tape, 80B ... second connecting Tape, 90 ... Perforation, 91 ... 1st part, 92 ... 2nd part, 95-97 ... Tear prevention part, 95 ... Cut part, 96 ... Punched hole, 97 ... Melt solidification part, UP ... Upper part, LP ... Lower part.