JP2020141869A - Connection type disposable wearing article - Google Patents

Abstract

To reduce wrinkles formed in wing parts while a fitting state that an article is fitted well with connection tapes of upper and lower two stages is obtained.SOLUTION: A connection type disposable wearing article has connection tapes 80A, 80B which are fitted to side flaps SF on a back part B and are removably connected to an abdominal part F, and has a first connection tape 80A and a second connection tape 80B provided for side parts on a waist side respectively and side parts around the legs in wing parts WP as the connection tapes 80A, 80B. The side flaps SF have perforations 90 which continue from between the first connection tape 80A and the second connection tape 80B inward in a width direction WD on side edges of the wing parts WP. The perforations 90 have wavy parts 93 extending in a wave shape so that they include at least one mountain part or valley part.SELECTED DRAWING: Figure 1

Description

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

A typical articulated disposable wear item 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, a base end portion fixed to a wing portion, a main body portion extending from the base end portion, and a 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 connected 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 connectable 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. This makes it possible to firmly tighten the circumference of the legs, and a wearing state with excellent fit can be obtained.

However, in the case described in Patent Document 1, since the portion divided into 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 upper and lower two stages is limited to the connecting tape, it is necessary to secure a certain length of the width direction dimension 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 tape 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 concatenated disposable wear 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 wear 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 side flaps that extend laterally to the absorber.
The side flap 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 has a perforation extending inward in the width direction from between the first connecting tape and the second connecting tape at the side edge of the wing portion.
The perforation has a wavy portion extending in a wavy manner so as to include at least one peak or valley.
An articulated disposable wear 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 portion, 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.

Moreover, since this connecting type disposable wearable article is divided into upper and lower two stages by providing perforations on the side flaps, the first connecting tape on the waist side is diagonally downward and the second connecting tape on the leg circumference side. Even if they are connected diagonally upward, large wrinkles are unlikely to form on the wing portion, and the appearance is unlikely to deteriorate.

Further, in a product that the user uses by separating the perforations, there is a possibility that the user does not notice the existence of the perforations and uses the product as it is. However, in this articulated disposable wear article, the perforation has a wavy portion extending in a wavy manner so as to include at least one peak or valley portion, so that the user can use the first connecting tape or the second connecting tape. When the mounting work is performed while grasping and pulling the tape, the cut portion extending in the direction intersecting the tensile direction among the cut portions of the perforations in the wavy portion opens due to the tensile force and becomes conspicuous. This makes it easier for the user to notice the presence of perforations.

<Second aspect>
The wavy portion is curved, the top and bottom of the wavy portion are tie portions, and the rest are cut portions.
The articulated disposable wear article of the first aspect.

(Action effect)
If the perforation has such a wavy portion, the cut portion opens wide during the mounting work, making it easier to see. Further, since the wavy portion has less tie portions, the wavy portion can be easily separated.
The cut portion is a cut portion, and the tie portion is a non-cut portion between adjacent cut portions.

<Third aspect>
Cut portions are formed at the top and bottom of the wavy portion.
The articulated disposable wear article of the first aspect.

(Action effect)
When the perforation of the wavy portion is cut off, the separation proceeds along the wavy portion, whereas the direction of the force applied to the tie portion is the tangential direction of the wavy portion and changes depending on the position of the wavy portion. Here, for example, when the traveling direction of the separation and the direction of the force applied to the tie portion are the same (for example, a linear perforation), no force is applied to the portion other than the tie portion when the tie portions are sequentially separated. That is, it is unlikely that the perforation will be torn apart from the extending direction. On the other hand, if the tie portion is provided at the top and bottom of the wavy portion, for example, the direction of the force applied when the tie portion of the top or bottom is separated greatly deviates from the traveling direction of the separation. A force is applied to the part deviated from the traveling direction of the perforation due to the separated momentum, and there is a risk that the part other than the perforation will be torn.
Therefore, as in this embodiment, the deviation between the traveling direction of the separation and the direction of the force applied to the tie portion is reduced, and the portion other than the perforation is less likely to be torn.

<Fourth aspect>
The entire portion of the perforation except at least both ends is the wavy portion, and the opening end portion of the perforation outward in the width direction is a straight portion extending linearly along the width direction.
A concatenated disposable wear article according to any one of the first to third aspects.

(Action effect)
By making most of the perforations wavy in this way, the visibility of the perforations is improved, and by making the starting end of the perforations a linear portion, it becomes easy to start the separation of the perforations.

<Fifth aspect>
The entire perforation is a wavy portion having a plurality of peaks or valleys, and the wave height and wavelength gradually increase from the outside to the inside in the width direction.
A concatenated disposable wear article according to any one of the first to third aspects.

(Action effect)
With such a wavy portion, the wave height and wavelength are relatively small at the beginning of the perforation, so that it is easy to start the separation of the perforation, and the wave height and wavelength are relatively small at the end of the perforation. The large size improves the visibility of the perforations.

<Sixth aspect>
A pressure-welded portion of the constituent members overlapping in the thickness direction is formed at a position adjacent to at least one of the upper side of the top portion and the lower side of the bottom portion.
A concatenated disposable wear article according to any one of the first to fifth aspects.

(Action effect)
When separating the perforations in the wavy portion, the direction of the separation and the direction of the force applied to the tie portion deviate from each other at the top and bottom of the wavy portion, so the perforations are compared with the linear perforations. It is easy for the situation to deviate and tear in directions other than the extending direction. Therefore, as in this embodiment, a pressure-welded portion of the constituent members overlapping in the thickness direction, that is, a longitudinal tear prevention portion having high strength against tearing is provided at a position adjacent to at least one of the upper side of the top portion and the lower side of the bottom portion. Is preferable.

<7th 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.
A concatenated disposable wear article according to any one of the first to sixth aspects.

(Action effect)
In this connecting type disposable wearable article, since the side flaps are perforated, the width dimension of the connecting tape 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.

According to the present invention, there are advantages such as reduction of wrinkles formed in the wing portion while a tightly fitted mounting 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. FIG. 6 is a sectional view taken along line 6-6 of FIG. It is a cross-sectional view of 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 sectional view taken along line 5-5 of FIG. 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 the unfolded state. It is an enlarged plan view which shows the wing part in the unfolded state. It is a cross-sectional view corresponding to the cross section of line 7-7 of FIG. It is a perspective view which shows the wearing state. It is an enlarged view which shows the main part of the state when the connecting tape is pulled.

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. 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 the letterpress method). Can be applied. Alternatively 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 the joining means for joining the constituent members, a means by welding materials such as a heat seal and 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 forward 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 covering the front side of the absorber 56, and a non-woven fabric covering 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 a filament aggregate obtained by stacking short fibers such as cotton-like pulp and synthetic fibers, and opening 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 high-absorbent polymer particles in part or all of the absorber 56. 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 absorbable 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 celluloses. 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, the liquid supplied into the absorber 56 tends to return to the outside of the absorber 56, so-called reversion.

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 amount of the highly absorbent polymer particles to be coated 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)
In order to prevent the highly absorbent polymer particles from coming off or to improve the shape retention of the absorber 56, the absorber 56 can be incorporated as an absorbing element 50 wrapped in the packaging sheet 58. As the packaging sheet 58, tissue paper, particularly crepe paper, non-woven fabric, non-woven fabric of polylami, 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 texture 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 the entire absorber 56 is wrapped by one sheet, or may be a packaging sheet in which the entire absorber 56 may be wrapped by a plurality of sheets such as two upper and lower sheets. 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 it 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 as necessary.

(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)
The liquid-impermeable sheet 11 is not particularly limited, but preferably has 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 water-impervious means are present. 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 texture 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 flap, 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 SF, that is, liquid impermeability in the illustrated example. It is bonded to the side portion of the 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, side flap)
The articulated disposable wearable article extends laterally to the anterior and posterior sides of the absorber 56, respectively, from a pair of end flap EFs without the absorber 56 and lateral to both side edges of the absorber 56. Each has a pair of side flap SFs that do not have an absorber 56 and extend. As shown in the illustrated example, the side flap 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 SF in a state of being extended along the front-rear direction LD, whereby the leg circumference portion of each side flap SF is flat. It is configured as a gather. As shown in the illustrated example, the leg circumference elastic member 64 is provided between the gather sheet 62 and the liquid-impermeable sheet 11 on the outer side in the width direction near the joint start end of the joint portion of the gather sheet 62, and the side flap SF. It can also be provided between the liquid-impermeable sheet 11 and the exterior non-woven fabric 12 in the above. 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 SF as shown in the illustrated example, the concave edge 70 from the side edge of the crotch portion M to the lower edge 71 of the wing portion is cut by cutting the middle of the LD in the front-rear direction on the side portion of the side flap SF. Is formed, and as a result, the wing portion WP is formed, which is preferable because it is easy to manufacture.

(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 81 may coincide with the side edge of the wing portion WP, or, as shown in FIG. 6, is slightly spaced 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 (surface 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), etc., 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. A spunbonded non-woven fabric, an air-through non-woven fabric, or a 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 the 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, for example, long fibers in which fibers are partially welded to each other by ultrasonic welding of an intermittent pattern. Non-woven fabric can be used.

When the connecting portion 83 is a hook material, a large number of loop threads entwined with the engaging protrusions of the hook material are sewn on the surface of a 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.

(Perforation)
Characteristically, as shown in an enlarged manner in FIG. 7, 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 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, and this The perforation 90 has a wavy portion 93 extending in a wavy manner so as to include at least one peak or valley.

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. 13A, the positional relationship of the connecting portion 83 is not upside down and the connecting portion is not inverted. The 83s may not overlap each other, or as shown in FIG. 13B, the positional relationship of the connecting portions 83 may be 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 provided with perforations 90 on the side flap SF and divided into upper and lower two stages, the first connection tape 80A on the waist side is diagonally downward and the first on the leg circumference side. Even if the two connecting tapes 80B are connected diagonally upward, large wrinkles are less likely to be formed on the wing portion WP and the appearance is less likely to be deteriorated.

Further, in a product in which the user cuts off the perforation 90 and uses the product, the user may use the product as it is without noticing the existence of the perforation 90. However, in this articulated disposable wear article, the perforation 90 has a wavy portion 93 extending in a wavy manner so as to include at least one peak or valley portion, and therefore, as shown in FIG. 14, the user. When performing the mounting work while grasping and pulling the first connecting tape 80A or the second connecting tape 80B, the cut portion 91 extending in the direction intersecting the pulling direction among the cut portions 91 of the perforations 90 of the wavy portion 93 is pulled. It opens by force and becomes noticeable. This makes it easier for the user to notice the presence of the perforation 90.

In this connection-type disposable wearable article, since the perforations 90 are formed in the side flap SF, the dimension 80w in the width direction WD of the connection tapes 80A and 80B can be kept 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 back side 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 size of the front-rear LD of the connecting tapes 80A and 80B can be appropriately determined, but for example, it can be less than 1/2 of the size of the front-back 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 size 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 center line of 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 may be one as shown in the illustrated example, or a plurality of perforations may be provided.

The dimensions of the cut portion 91 and the tie portion 92 at the perforation 90 can be appropriately determined, but usually, the width direction dimension 91w of the cut portion 91 is preferably 1 to 15 mm, particularly preferably 4 to 8 mm. Further, the width direction dimension 92w of the tie portion 92 is preferably 0.1 to 5 mm, particularly 0.5 to 2 mm.

The shape of the wavy portion 93 may be a curved shape such as a sinusoidal shape as shown in FIG. 7 or the like, a triangular wavy shape as shown in FIG. 8, or a rectangular wavy shape as shown in the drawing.

When the wavy portion 93 is curved, as shown in FIGS. 7 to 9, if the top and bottom of the wavy portion 93 are tie portions 92 and the other parts are cut portions 91, the cut portion is cut during mounting work. It is preferable because the 91 opens wide and is easy to see. Further, since the wavy portion 93 has less tie portions 92, it is also preferable in that the wavy portion 93 can be easily separated.

However, if the tie portion 92 is provided on the top and bottom of the wavy portion 93, the direction of the force applied when the tie portion 92 on the top or bottom is separated greatly deviates from the traveling direction of the separation, so that the tie portion 92 on the top or bottom is separated. A force is applied to the portion deviated from the traveling direction of the perforation 90 due to the separated momentum, and the portion other than the perforation 90 may be torn. Therefore, as shown in FIG. 10, it is also preferable that the cut portion 91 is formed at the top and bottom of the wavy portion 93. In this case, the deviation between the traveling direction of the separation and the direction of the force applied to the tie portion 92 is reduced, and the portion other than the perforation 90 is less likely to be torn.

As shown in FIG. 9, the entire perforation 90 may be a wavy portion 93, or as shown in FIG. 7 or the like, only a part of the perforation 90 may be a wavy portion 93. In particular, as shown in FIG. 7, the entire portion of the perforation 90 excluding at least both ends is a wavy portion 93, and the starting end portion of the perforation 90 outside the width direction WD is linear along the width direction WD. It is preferable that the straight portion 94 extends to. By making most of the perforations 90 wavy portions 93 in this way, the visibility of the perforations 90 is improved, and by making the starting end of the perforations 90 a straight portion 94, the separation of the perforations 90 is started. Becomes easier. In the illustrated example, the end portion of the perforation 90 is also a straight portion 94, but it goes without saying that only the start end portion may be a straight portion 94.

The size of the wavy portion 93 can be appropriately determined, but the wave height 93h is preferably 3 to 7 mm, and the wavelength 93w is preferably 8 to 16 mm. The wave height 93h and wavelength 93w may be constant or variable over the entire length of the wavy portion 93. For example, as shown in FIG. 9, when the entire perforation 90 is a wavy portion 93 having a plurality of peaks or valleys, the wave height 93h and the wavelength 93w gradually increase from the outside to the inside of the WD in the width direction. It is preferable that it is large. When such a wavy portion 93 is provided, the wave height 93h and the wavelength 93w are relatively small at the start end of the perforation 90, so that it is easy to start the separation of the perforation 90 and the wave height at the end side of the perforation 90. Since 93h and the wavelength 93w are relatively large, the visibility of the perforation 90 is improved.

(Vertical tear prevention part)
When separating the perforation 90 of the wavy portion 93, the direction of the separation and the direction of the force applied to the tie portion 92 deviate from each other at the top and bottom of the wavy portion 93, so that the perforation 90 is compared with the linear perforation 90. As a result, it is easy for a situation in which the perforation 90 is deviated and torn in a direction other than the extending direction. Therefore, as shown in FIG. 11, a pressure-welded portion 97 of the constituent members overlapping in the thickness direction, that is, a vertical tear prevention portion having high strength against tearing, is provided at a position adjacent to at least one of the upper side of the top portion and the lower side of the bottom portion. It is preferable to provide it. The pressure welding portion 97 may be provided intermittently along the width direction WD or may be provided continuously. Such a welded portion 97 can be formed by performing a heat embossing process or an ultrasonic welding process at an appropriate position in the side flap SF. The shape of the welded portion 97 may be a rectangle having a long side along the front-rear direction LD as shown in the figure, or an appropriate shape such as another polygon, a circle, or an ellipse. The dimensions of the welded 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.

(Horizontal tear prevention part)
When the perforation 90 is provided in the side flap SF, when the perforation 90 is torn to the inner end, the side flap SF is torn further to the inner part than the inner end of the perforation 90. Too much tearing) ”may occur. Therefore, it is preferable to provide a lateral tear prevention portion for preventing such lateral tear at a portion adjacent to the inner side of the inner end of the perforation. Various types of lateral tear prevention portions will be described below, and these lateral tear prevention portions can be applied in combination as appropriate.

The first lateral tear prevention portion is a C-shaped cut portion 95 in which the non-cut portion is located laterally as shown in FIG. 7 or the like, or a punched hole 96 as shown in FIG. 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 C-shaped cut portion 95 or punch holes 96, and the C-shape. It has an action of preventing the side flap SF from being torn to a portion further inward than the shape cut portion 95 or the punched 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 front-rear LD can be about 3 to 7 mm, and the dimension of the width direction WD can be about 3 to 7 mm.

As shown in FIG. 11, the second lateral tear prevention portion is a welded portion 97 formed by pressure welding of constituent members (that is, the gather sheet 62 and the exterior nonwoven fabric 12 in the illustrated example) that overlap in the thickness direction. Such a welded portion has higher strength against tearing than other portions. Therefore, when the tearing progresses beyond the inner end of the perforation 90, the tearing can be stopped at this welded portion. Such a welded portion can be formed by performing heat embossing or ultrasonic welding at an appropriate position on the side flap SF. The shape of the welded 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 welded 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.

The third lateral tear prevention portion utilizes at least one of the top sheet 30 and the liquid impermeable sheet 11. That is, as shown in FIG. 7 and the like, the gather sheet 62 and the exterior non-woven fabric 12 extend from the inner end of the perforation 90 to the outside, and the top sheet 30 and the liquid impermeable sheet 11 are inside the perforation 90. As shown in FIG. 12A, the side portions 11S of the liquid permeable sheet 11 extend only to the inside from the direction end, and once (or a plurality of not shown) on the front side (or may be the back side). It is preferable that the folded portion is folded back and the strength of the folded portion is improved. As a result, when the tearing progresses beyond the inner end of the perforation 90, the strength improving portion due to the folding back can prevent the tearing from being excessive. Although not shown, instead of (or with) folding back the side portion 11S of the liquid permeable sheet, the side portion 30S of the top sheet 30 is folded back, as shown in FIG. 12 (b). May be good.

As shown in FIG. 12 (c), the side portion of the liquid permeable sheet 11 is folded back once (or may be multiple times, although not shown) on the front side (or the back side), and the top sheet 30 is formed. It is also preferable that the side portion 30S of the liquid impermeable sheet 11 is sandwiched between the folded portions of the side portion 11S of the liquid impermeable sheet 11. As a result, the strength can be further improved as compared with the case where the strength is improved only by folding back one material. Contrary to the illustrated example, the side portion 30S of the top sheet 30 may be folded back, and the side portion 11S of the liquid impermeable sheet 11 may be sandwiched between the folded back portions.

(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, even if the constituent fibers of the non-woven fabric are hydrophilic fibers (including hydrophobic fibers made hydrophilic by a hydrophilic agent), hydrophobic fibers or water-repellent fibers (water-repellent made by a water-repellent agent) It may be (including aqueous fibers). 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 WD (horizontal direction) in the figure, 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%) To 49.0 g, add 1.0 g of a highly absorbent polymer 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).

-"Grandming" 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 constant weight of a sample or test piece 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%. A sample having a size of 100 mm × 100 mm is cut out from the test piece in a constant weight state 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 index.

-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 superabsorbent polymer" was performed using 2 g of superabsorbent 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%). To 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 wearable articles as in the above example.

11 ... Liquid permeable sheet, 12 ... Exterior non-woven fabric, 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 ... anterior-posterior direction, M ... crotch part, SF ... side flap, WD ... width direction, WP ... wing part, 80A ... first connecting tape, 80B ... second connecting tape, 90 ... perforations , 93 ... wavy part, 96 ... punched hole, 95 ... C-shaped cut part, 97 ... welded part, UP ... upper part, LP ... lower part, 91 ... cut part, 92 ... tie part, 94 ... straight part, 93h ... wave height, 93w ... wavelength.

Claims (7)

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 side flaps that extend laterally to the absorber.
The side flap 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 has a perforation extending inward in the width direction from between the first connecting tape and the second connecting tape at the side edge of the wing portion.
The perforation has a wavy portion extending in a wavy manner so as to include at least one peak or valley.
An articulated disposable wear item. The wavy portion is curved, the top and bottom of the wavy portion are tie portions, and the rest are cut portions.
The articulated disposable wearable article according to claim 1. Cut portions are formed at the top and bottom of the wavy portion.
The articulated disposable wearable article according to claim 1. The entire portion of the perforation except at least both ends is the wavy portion, and the opening end portion of the perforation outward in the width direction is a straight portion extending linearly along the width direction.
The articulated disposable wear article according to any one of claims 1 to 3. The entire perforation is a wavy portion having a plurality of peaks or valleys, and the wave height and wavelength gradually increase from the outside to the inside in the width direction.
The articulated disposable wear article according to any one of claims 1 to 3. A pressure-welded portion of the constituent members overlapping in the thickness direction is formed at a position adjacent to at least one of the upper side of the top portion and the lower side of the bottom portion.
The articulated disposable wear article according to any one of claims 1 to 5. 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 according to any one of claims 1 to 6.

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