JP7357569B2 - Interlocking disposable wearing article - Google Patents

Description

The present invention relates to a connected disposable article that can be worn and used as is, similar to a pants-type disposable article.

Typical connected disposable wearing articles (referred to as tape-type disposable diapers, etc.) have a crotch area that includes the center in the front-to-back direction, a ventral part that extends to the front from the center in the front-to-back direction, and a dorsal part that extends to the rear from the center in the front-to-back direction. At least the dorsal side portion has wings extending from the crotch portion to both left and right sides in the width direction. The wing also has a connecting portion that is removably connected to the outer surface of the ventral portion. In use, the wing is worn by passing the wing from both sides of the waist to the outer surface of the ventral portion and connecting the connecting portion to the outer surface of the ventral portion. After use, the wing connections are peeled away from the outer surface of the ventral portion, and the ventral portion is opened and removed from the wearer's body. Such connected disposable wearing articles are used not only for infants but also for nursing care purposes (for adults) (for example, see Patent Document 1).

Further, a large number of connected disposable wearable articles are generally sold in a folded state and packaged together in a packaging bag. As for how to fold each connected disposable wearable article, both wings are folded back to the front side at a first folding position near the center side in the width direction of the connecting part to form a first folded part, and further, a first folded part is formed. The inner surface of the ventral portion and the inner surface of the dorsal portion face each other with the center of the front and back direction being the fold line, with the second folded portion being formed by being folded back to the front side at the second folding position closer to the center in the width direction. It is common for the paper to be folded in two.

On the other hand, a pants-type disposable article has side seals formed by welding both sides of the dorsal part and both sides of the ventral part, thereby forming a waist opening and a pair of left and right leg openings. In use, the device is worn by grasping both sides of the waist opening with both hands, passing one leg through the waist opening and into the leg opening, and pulling it up to the waist. After use, it is common to peel or break the side seal portion and then remove it from the wearer's body.

Furthermore, similar to connected disposable articles, pants-type disposable articles have also been proposed in which the waist circumference can be adjusted by adjusting the connection position of the dorsal part with respect to the ventral part (for example, Patent Document 1 , 2).

However, as can be seen from the fact that side seals are formed, these conventional products are based on the structure of pants-type disposable wearable articles from the viewpoint of manufacturability, and can be applied to connected-type disposable wearable articles. isn't it.

Japanese Patent Application Publication No. 2005-95574 Japanese Patent Application Publication No. 2003-79666

Therefore, the main object of the present invention is to provide a connecting type disposable wearing article that can be worn and used as is, similar to the pants-type disposable wearing article.

Typical embodiments of the present invention that solve the above problems are as follows.
<First aspect>
It has a crotch area including the center in the front-rear direction, a ventral part extending forward from the center in the front-rear direction, and a dorsal part extending rearward from the center in the front-rear direction,
Both sides of the dorsal part have connecting parts that are removably connected to the outer surface of the ventral part,
One side and the other side in the width direction of the back side portion have folded portions that are folded back to the front side an even number of times between the center in the width direction and the connecting portion,
The connecting portion is exposed on the uppermost surface of the rear folded portion,
One side and the other side in the width direction of the ventral side portion have a front folded portion that is folded back an odd number of times to the front side between the center in the width direction and the connecting portion,
The outer surface of the ventral portion is exposed on the uppermost surface of the front folded portion,
The inner surface of the ventral portion and the inner surface of the dorsal portion are folded in two in the front-rear direction so that they face each other, and the connecting portion located on the top surface of the rear folded portion is folded in half on the top surface of the front folded portion. connected to the outer surface of the ventral portion located at
A connected disposable wear article characterized by:

(effect)
This connected disposable wearing article is folded in such a state that the connecting portions on both sides of the back side portion are respectively connected to both sides of the outer surface of the ventral side portion. When the folded connected disposable wearing article is opened, the front folded part and the rear folded part are unfolded while maintaining the connection of the connecting parts, and the shape is similar to the worn state with a waist opening and leg openings. become. Therefore, it is possible to wear and use the garment as is, like a pants-type disposable wearing article, without changing the connection of the connecting portions. Of course, the waist circumference may be adjusted by adjusting the connecting position of the connecting portion after wearing the garment in the same manner as the pants-type disposable wearing article.
Moreover, since the present interlocking disposable wearing article can be folded as compactly as conventional products, packaging the product will not be difficult.
Furthermore, this connected disposable wearable article is not only folded in two in the front-rear direction, but also has a connecting part located on the top surface of the rear folded part on the outer surface of the ventral part located on the top surface of the front folded part. Because they are connected, there is also the secondary effect that one part and the other part that overlap when folded in half are difficult to shift.

<Second aspect>
A target portion to which the connecting portion is connected is provided on the outer surface of the ventral portion, extending from one side to the other side, and the target portion is exposed on the uppermost surface of the front folded portion. Ori,
The inner surface of the ventral portion and the inner surface of the dorsal portion are folded in two in the front-rear direction so that they face each other, and the connecting portion located on the top surface of the rear folded portion is folded in half on the top surface of the front folded portion. connected to the target portion located at
The articulated disposable wearing article of the first aspect.

(effect)
Among connected disposable wearing articles, it is known that the connecting part is connected to any part of the outer surface material of the ventral part, but in order to strengthen the connection of the connecting part, It is common to have a target section extending from one side to the other side. This aspect is suitable for the latter case, and is characterized in that the target part is exposed on the uppermost surface of the front folded part and is provided so that it can be connected to the connecting part of the rear folded part. It is something that you have.

<Third aspect>
The connecting portion is biased outward in the width direction in an overlapping region of the uppermost surface of the front folded portion and the uppermost surface of the rear folded portion,
A temporary fixing part is provided at the central end in the width direction of the overlapping region, in which the uppermost surface of the front folded part and the uppermost surface of the rear folded part are releasably joined by adhesive or welding. ,
The connected disposable wearing article according to the first or second aspect.

(effect)
Considering the ease of manufacturing and the fact that it can be worn as is, similar to pants-type disposable wearing articles, the width of the front folded part is made wider and the overlap area between the top surface of the front folded part and the top surface of the back folded part is made. It is preferable that the connecting portion is biased toward the outside in the width direction. However, in this case, if the center side in the width direction of the front folded part is unfixed from the connection position of the connecting part, when worn as is and used as is, similar to pants-type disposable wear articles, this unfixed part It flutters and gets in the way when you pass your legs through it. Therefore, it is preferable to provide a temporary fixing part as in this embodiment and reduce or eliminate the unfixed part.

<Fourth aspect>
The rear folded portion includes a proximal portion that is folded back toward the center in the width direction at a first position in the width direction, and a distal end that is folded back toward the outside in the width direction at a second position along the tip of the proximal portion. It consists of a side part,
The front folded part consists only of a folded part folded back toward the center in the width direction at a third position in the width direction,
The first position and the third position are at the same position in the width direction,
The connected disposable wearing article according to any one of the first to third aspects.

(effect)
If the widthwise positions of the first position and the third position are the same as in this embodiment, the side edges of the ventral part and the side edges of the dorsal part coincide in the folded state of the product, making it compact. The appearance becomes better. In addition, during manufacturing, the dorsal part is first folded back to the back side at the second position, and then the ventral part and the dorsal part are folded back to the front side at the same time at the folding position passing through the first and third positions. (that is, only two folds are required instead of folding each of these three places separately).

<Fifth aspect>
The ventral portion has front wings that extend from the groin portion to both sides in the width direction in the unfolded state;
The dorsal portion has a rear wing including an extension portion that extends from the front wing to both sides in the width direction in an expanded state;
The connecting portion is provided on the surface of the extended portion,
The extension portion has an elastic region that elastically expands and contracts in the width direction.
The articulated disposable wearing article of the fourth aspect.

(effect)
In the structure of this aspect, since the width of the rear wing is wider than that of the front wing, it becomes easy to construct the connected disposable wearing article of the fourth aspect. Furthermore, since the extension portion has an elastic region, the width of the rear folded portion becomes narrower than when it is attached, making manufacturing easier.

According to the present invention, advantages such as a connected disposable wearing article that can be worn and used as is, similar to a pants-type disposable wearing article, are brought about.

FIG. 2 is a plan view showing the front side of the tape-type disposable diaper in an unfolded state. FIG. 2 is a plan view showing the back side of the tape-type disposable diaper in an unfolded state. FIG. 2 is a sectional view taken along line iii-iii in FIG. 1; FIG. 2 is a sectional view taken along line iv-iv in FIG. 1; FIG. 3 is an enlarged plan view showing the front side of the main part in the unfolded state. FIG. 3 is an enlarged plan view showing the front side of the main part in the unfolded state. FIG. 3 is a perspective view showing the installed state. FIG. 3 is a perspective view showing the installed state. FIG. 3 is a perspective view showing the installed state. FIG. 3 is a perspective view showing the product in a folded state. FIG. 3 is a top view of the folded product viewed from the waist side. FIG. 6 is a top view showing a change from a folded state to an attached state. FIG. 3 is a top view of the folded product viewed from the waist side. It is a perspective view showing a folding procedure. It is a perspective view showing a folding procedure.

1 to 5 show a tape-type disposable diaper as an example of a connected disposable wearing article. This connected disposable wearing article has a crotch area C including the center in the front-rear direction LD, a ventral part F extending forward from the center in the front-rear direction LD, and a dorsal part B extending rearward from the center in the front-rear direction LD. have. In addition, this connected disposable wearing article includes an absorbent body 3 built into an area including the crotch area C, a liquid-permeable top sheet 2 that covers the front side of the absorbent body 3, and a liquid-impermeable top sheet that covers the back side of the absorbent body 3. It has a permeable sheet 1 and an exterior nonwoven fabric 12 that covers the back side of the liquid-impermeable sheet 1 and constitutes the outer surface of the product.

Here, the symbol W in the figure indicates the total width of the diaper in the unfolded state, and the symbol L indicates the total length of the diaper in the unfolded state, and the dotted portions in the cross-sectional view indicate the respective members located on the front and back sides of the diaper. A hot melt adhesive is shown as a joining means for joining. The hot melt adhesive can be applied by known methods such as slot coating, continuous line or dotted bead coating, spiral or Z-shaped spray coating, or pattern coating (transfer of hot melt adhesive using a letterpress method). Can be applied. Alternatively or additionally, at the fixed portion of the elastic member, a hot melt adhesive can be applied to the outer circumferential surface of the elastic member to secure the elastic member to the adjacent member. Examples of hot melt adhesives include EVA adhesives, adhesive rubber adhesives (elastomer adhesives), olefin adhesives, and polyester/polyamide adhesives, which can be used without particular limitation. As a joining means for joining each component, means by material welding such as heat sealing or ultrasonic sealing can also be used.

Furthermore, as the nonwoven fabric in the following description, any known nonwoven fabric can be used as appropriate depending on the site and purpose. The constituent fibers of the nonwoven fabric include, for example, olefin-based fibers such as polyethylene or polypropylene, synthetic fibers such as polyester-based fibers, and polyamide-based fibers (including single-component fibers as well as composite fibers such as core-sheath fibers), as well as recycled fibers such as rayon and cupro. Fibers, natural fibers such as cotton, etc. can be selected without particular limitation, and a mixture of these can also be used. In order to increase the flexibility of the nonwoven fabric, it is preferable that the constituent fibers be crimped fibers. In addition, even if the constituent fibers of a nonwoven fabric are hydrophilic fibers (including hydrophilic fibers made hydrophilic by a hydrophilic agent), they may be hydrophobic fibers or water-repellent fibers (including hydrophilic fibers made hydrophilic by a water-repellent agent). (including aqueous fibers). In addition, nonwoven fabrics generally vary depending on the fiber length, sheet forming method, fiber binding method, and laminated structure. It is classified into nonwoven fabrics, point bonded nonwoven fabrics, laminated nonwoven fabrics (SMS nonwoven fabrics with a meltblown layer sandwiched between spunbond layers, SMMS nonwoven fabrics, etc.), and any of these nonwoven fabrics can be used.

The materials and characteristic parts of each part will be explained in order below.
(Absorber)
The absorbent material 3 is basically a stack of pulp fibers, an aggregate of filaments such as cellulose acetate, or an aggregate of fibers such as nonwoven fabric, and is made by mixing and fixing a superabsorbent polymer as necessary. can be used. Further, if necessary, the absorbent body 3 can be wrapped in crepe paper (not shown). Further, the planar shape of the absorber 3 can be appropriately determined, such as an hourglass shape as shown in the figure, a rectangular shape, or the like. It is desirable that the pulp weight of the absorbent body 3 is about 100 to 500 g/m ² and the thickness is about 1 to 15 mm. Further, it is desirable that the basis weight of the superabsorbent polymer is about 0 to 300 g/m ² .

(liquid impermeable sheet)
The liquid-impermeable sheet 1 is not particularly limited, but preferably has moisture permeability. The liquid-impermeable sheet 1 is, for example, a microporous sheet obtained by kneading an inorganic filler into an olefin resin such as polyethylene or polypropylene, molding the sheet, and then stretching the sheet in uniaxial or biaxial directions. A sheet can be suitably used. Further, as the liquid-impermeable sheet 1, a sheet made of a non-woven fabric as a base material with improved waterproofness can also be used.

It is desirable that the liquid-impermeable sheet 1 extends over the same or wider area as the absorber 3 in the front-rear direction LD and width direction WD, but if necessary, such as when other water-blocking means are present, It is also possible to have a structure in which the end portions of the absorber 3 are not covered in the front-rear direction LD and the width direction WD.

(Exterior nonwoven fabric)
In order to give the outer surface of the diaper a cloth-like appearance and feel, it is preferable that the entire back side of the liquid-impermeable sheet 1 be covered with an exterior nonwoven fabric 12. The exterior nonwoven fabric 12 can also be omitted.

(Top sheet)
The top sheet 2 has liquid permeability, and can be made of, for example, a perforated or non-perforated nonwoven fabric, a porous plastic sheet, or the like.

The top sheet 2 extends from the front end of the product to the rear end in the front-rear direction, and extends laterally beyond the absorbent body 3 in the width direction WD. If necessary, such as when the top sheet 2 is located closer to the center in the width direction than the side edges of the top sheet 3, the width of the top sheet 2 can be made shorter than the overall width of the absorbent core 3, and other appropriate modifications can be made.

(intermediate sheet)
In order to prevent the liquid that has passed through the top sheet 2 from returning, an intermediate sheet (not shown) (also called a "second sheet") can be provided on the back side of the top sheet 2. The intermediate sheet can also be omitted.

(Side barrier sheet)
As shown in FIGS. 3 and 4, on both sides of the inner surface of the article (in the illustrated form, the surface of the liquid-impermeable sheet 1 extending laterally from the side edge surface of the top sheet 2), The outer root portion 4x of the barrier sheet 4 in the width direction is attached over the entire front and back direction. For the side barrier sheet 4, in addition to various nonwoven fabrics (preferably spunbond nonwoven fabrics), plastic films similar to those used for liquid-impermeable sheets, or laminated sheets of these can be used. From the viewpoint of tactility, a nonwoven fabric treated with water repellent treatment is suitable. The main body portion 4c at the center in the width direction of the side barrier sheet 4 is fixed to the inner surface of the article (the surface of the top sheet 2 in the illustrated form) at both ends in the front and back direction by means such as hot melt adhesive. The middle part of is an unfixed free part, and at the tip of this free part (the end on the center side in the width direction in the unfolded state), an elongated elastic member 4G is extended in the front-rear direction. It is fixed with hot melt adhesive or the like. In the illustrated example, a plurality of elongated elastic members 4G are provided at predetermined intervals, but it may be one. The elongated elastic member 4G (the same applies to other elongated elastic members) is natural rubber or synthetic rubber formed in the form of threads, strings, strips, etc., specifically styrene rubber, olefin rubber, urethane rubber. , ester rubber, polyurethane, polyethylene, polystyrene, styrene-butadiene, silicone , polyester, and other commonly used materials can be used. This free portion constitutes a side barrier that rises against the inner surface of the article (in the illustrated embodiment, the surface of the topsheet 2), as shown in FIG. 4, as a result of the contraction force of the elongated elastic member 4G. The starting point 4b of this rising portion is located at the boundary between the fixed portion 4x on the outer side in the width direction and the inner portion 4c in the side barrier sheet 4. It should be noted that the diagonally upward-sloping hatched area to the right in FIG. 1 indicates the portion to which the side barrier sheet 4 is fixed.

(flap)
At both ends of the disposable diaper 100 in the front and rear directions, the liquid-impermeable sheet 1, the outer nonwoven fabric 12, the top sheet 2, and the side barrier sheet 4 extend from the region overlapping with the absorbent body 3 to both front and rear sides of the front and rear ends of the absorbent body 3. Each of them is extended to form an end flap EF in which no absorbent body 3 is present. On the other hand, on both left and right sides of the disposable diaper 100, the liquid-impermeable sheet 1, the exterior nonwoven fabric 12, the top sheet 2, and the side barrier sheet 4 are arranged from the region overlapping with the absorbent body 3 to the side of the side edge of the absorbent body 3. A side flap SF is formed in which the absorbent body 3 does not exist.

(front wing/rear wing)
It is preferable that the back side portion B has rear wings BW extending further to both sides in the width direction WD than the crotch portion C in the unfolded state. Similarly, it is preferable that the ventral portion F also has a front wing FW that extends beyond the crotch portion C to both sides in the width direction WD. At least one of the rear wing BW and the front wing FW may be entirely formed of a member different from the other parts. However, in the case of having a side flap part SF as in the illustrated example, by cutting the middle of the side part of the side flap part SF in the front-rear direction LD, the side edge of the crotch part C is connected to the front wing FW and the rear wing BW. It is also preferable that a concave leg circumferential edge Le is formed, and as a result, at least the base portions (widthwise central portions) of the front wing FW and the rear wing BW are formed. In the illustrated example, the front wing FW is made up of only side flaps, and the rear wing BW is made up of side flaps and extended portions that extend to both sides of the front wing FW in the width direction WD in the unfolded state. Conversely, the rear wing BW may consist only of side flaps, and the front wing FW may have an extension part, or both the front wing FW and the rear wing BW may have extension parts.

(Connection part)
Connecting portions 9 that are detachably connected to the outer surface of the ventral portion F are provided on both sides of the dorsal portion B, respectively. One connecting portion 9 may be provided in each rear wing BW, or a plurality of connecting portions 9 may be provided. For example, as shown in FIG. 5, a plurality of connecting portions 9 may be provided on each rear wing BW at intervals in the longitudinal direction LD, or as shown in FIG. A total of four may be provided at intervals in the LD and width direction WD. As the connecting portion 9, in addition to providing a hook material (male material) of a mechanical fastener (surface fastener), an adhesive layer may be provided. The hook material has a large number of engagement protrusions on its connecting surface, and the shapes of the engagement protrusions include (A) L-shape, (B) J-shape, (C) mushroom shape, and (D) Although there are T-shape, (E) double J-shape (a shape in which J-shapes are joined back to back), any shape may be used.

The member providing the connecting portion 9 can be determined as appropriate depending on the member configuration of both sides of the back side portion B (in the case of the illustrated example, the rear wing BW). For example, the illustrated rear wing BW has a fixing part 5f fixed between sheets on the sides of the side flaps by means of hot melt adhesive, etc. By having the extension member 5 having the main body part 5e projecting outward, an extension part is formed that extends to both sides in the width direction WD than the front wing FW consisting of only side flaps in the unfolded state. Although the connecting portion 9 is provided on the surface of the extension member 5, the present invention is not limited thereto. Although not shown, the extension member 5 may not be provided, the dimensions in the width direction WD of the front wing FW and the rear wing BW in the unfolded state may be made substantially equal, and the connecting portion 9 may be provided on the side of the rear wing BW.

When the extension member 5 is provided, a nonwoven fabric having sufficient strength, particularly a sheet made of multiple layers of nonwoven fabric, or a polylaminated nonwoven fabric can be suitably used as the material.

It is preferable that the dimension of the rear wing BW in the front-rear direction LD is about 10 to 30% of the total product length L at the shortest part because it provides a good fit when used as a pants-type disposable wear article as described below. . In addition, in order to ensure the shape stability of the leg opening when used as a pants-type disposable wearing article as described later, the connecting portions 9 are spaced apart in the front-rear direction LD on each side of the back portion B. It is preferable to provide a plurality of (in the illustrated example, two connecting parts 9, the waist side connecting part 9 and the leg circumferential side connecting part 9).

As in the example shown in FIG. It is preferable to have a perforation 10 for separating the waist side and the leg side. In this case, as shown in FIGS. 7 and 8, by cutting the perforation 10, the connecting protrusion 51 on the waist side and the connecting protrusion 52 on the leg side are separated, and the connecting protrusion 51 on the waist side can be connected to the outer surface of the ventral part F with the connecting protrusion 52 facing diagonally downward and the connecting protrusion 52 on the leg side facing diagonally upward. Of course, as shown in FIG. 9, the perforations 10 can also be used without being separated.

As in the example shown in FIG. 6, instead of being divided by the perforations 10, the connecting protrusion 51 on the waist side and the connecting protrusion 52 on the leg side may be formed separately by cutting or the like in advance. Although not shown, separately formed connecting protrusions 51 and 52 may be attached to the waist side and the leg side, respectively.

(Target part)
It is preferable that a target portion 6 is provided at the connecting location of the connecting tape in the ventral portion F. The target portion 6 can be provided by attaching a sheet material to the outer surface of the ventral portion F to facilitate connection, as shown in the illustrated example.

The sheet material for forming the target portion 6 is not particularly limited, but when the connecting portion 9 is a hook material, for example, long fibers whose fibers are partially welded to each other by intermittent pattern ultrasonic welding are used. Non-woven fabrics can be used.

In addition, when the connecting part 9 is made of a hook material, as a sheet material for forming the target part 6, a large number of loop threads that can be entangled with the engaging protrusions of the hook material are sewn onto the surface of the base material made of plastic film or nonwoven fabric. Composite sheet materials can be used.

Furthermore, when the connecting portion 9 is a hook material and the connecting portion of the connecting tape in the ventral portion F is made of a nonwoven fabric (for example, when it has an exterior nonwoven fabric 12 as in the illustrated example), the target portion 6 is It is also possible to use a suitable location of the exterior nonwoven fabric 12 as the target portion 6 and to entangle and connect the hook material with the fibers of the exterior nonwoven fabric 12 without adding a sheet material to the fibers of the exterior nonwoven fabric 12.

On the other hand, in the case where the connecting portion 9 is an adhesive layer, the sheet material for forming the target portion 6 is a sheet material made of a smooth plastic film that is highly adhesive, and the surface thereof is subjected to a release treatment. can be used.

(stretch area)
It is preferable that the portion of the rear wing BW that is located closer to the center in the width direction WD than the connection portion 9 has an elastic region 5x that elastically expands and contracts in the width direction WD because this will improve the fit when worn. It is not necessary to have the elastic region 5x. The method for forming the elastic region 5x in the rear wing BW is not particularly limited. For example, the target portion may be formed of a material that can be elastically expanded and contracted by itself, such as an elastic nonwoven fabric or a rubber sheet. , the majority (for example, 70% or more) of the main body portion 5e of the extended portion in the width direction WD is formed by pasting together a first sheet and a second sheet, and the first sheet and the second sheet are It is formed by fixing the elastic member 20 in an expanded state between. In this case, the region having the elastic member 20 is contracted in the width direction WD due to contraction of the elastic member 20, and becomes an elastic region 5x that can be elastically expanded in the width direction WD. As this elastic member 20, in addition to an elongated member, a sheet-like member can also be used.

(Folding of product)
Tape-type disposable diapers are generally sold in a folded state. Various folding methods are known, but as shown in FIGS. 10 and 11, one side and the other side of the dorsal portion B in the width direction WD are folded between the center WC in the width direction WD and the connecting portion 9. , has a back folded part 30 which is folded back an even number of times on the front side, a connecting part 9 is exposed on the top surface of the back folded part 30, and one side and the other side in the width direction WD of the ventral side part F have a width. It has a front folded part 40 that is folded back an odd number of times on the front side between the center WC in the direction WD and the connecting part 9, and the outer surface of the ventral part F is exposed on the uppermost surface of the front folded part 40. It is folded in half in the front-rear direction LD so that the inner surface of the ventral portion F and the inner surface of the dorsal portion B face each other, and the connecting portion 9 located on the uppermost surface of the rear folded portion 30 forms the front folded portion. It is preferable that the ventral portion F is connected to the outer surface of the ventral portion F located on the uppermost surface of the 40.

As long as the connecting portion 9 exposed on the uppermost surface of the rear folded portion 30 is connected to the outer surface of the ventral portion F located on the uppermost surface of the front folded portion 40, the entire connecting portion 9 is folded back as shown in the illustration. It is not necessary to expose the uppermost surface of the portion 30, and although not shown, a portion of the connecting portion 9 may be exposed and the remaining portion may not be exposed.

In the tape type disposable diaper folded in this manner, the connecting portions 9 on both sides of the back side portion B are connected to both sides of the outer surface of the ventral side portion F, respectively. When the tape-type disposable diaper folded in this way is opened, the front folded part 40 and the rear folded part 30 unfold while maintaining the connection of the connecting part 9, opening the waist and legs. It has the same shape as the mounted state with an opening (see FIG. 9). Therefore, without changing the connection of the connecting portion 9, it is possible to wear and use the garment as is, like a pants-type disposable wearing article. Of course, the waist circumference may be adjusted by adjusting the connecting position of the connecting portion 9 after wearing the garment in the same manner as the pants-type disposable wearing article. In addition, this tape-type disposable diaper can be folded as compactly as conventional diapers, so packaging the product will not be difficult. Furthermore, the present tape type disposable diaper is not only folded in half in the front-rear direction LD, but also the connecting portion 9 located on the top surface of the back folded portion 30 is folded in half on the ventral side portion located on the top surface of the front folded portion 40. Since it is connected to the outer surface of F, it also has the secondary effect that one part and the other part that overlap when folded in two are difficult to shift.

As in the illustrated example, when the target portion 6 is provided from one side to the other side on the outer surface of the ventral portion F, the target portion 6 is exposed on the uppermost surface of the front folded portion 40 and It needs to be connected to the connecting part 9 of the folded part 30. Otherwise, it cannot be worn and used as is, similar to pants-type disposable wearing articles. On the other hand, although not shown, if the connecting portion 9 is a hook material and the connecting portion of the connecting tape in the ventral portion F is made of a nonwoven fabric, the hook material is attached to the exterior nonwoven fabric 12 exposed on the uppermost surface of the front folded portion 40. Since it is only necessary to connect them, the folding position of the front folded portion 40 can be set independently of the target portion 6.

Considering the ease of manufacturing and the fact that it can be worn and used as is, similar to pants-type disposable wearing articles, the width of the front folded part 40 is made wider, and the uppermost surface of the front folded part 40 and the uppermost surface of the rear folded part 30 are It is preferable that the connecting portion 9 is biased toward the outside in the width direction WD in the overlapping region 70 . However, in this case, if the center side of the front folded part 40 in the width direction WD is not fixed relative to the connecting position of the connecting part 9, this non-fixed part will be unfixed when worn as is, similar to pants-type disposable wearing articles. The fixed part 41 flutters and gets in the way when the legs are passed through. Therefore, as shown in FIG. 13, the uppermost surface of the front folded portion 40 and the rear It is preferable to provide a temporary fixing part 60 that is releasably joined to the uppermost surface of the folded part 30, and to reduce or eliminate the unfixed part.

The joint at the temporary fixing part 60 can be formed by adhesive or welding. It is preferable that the temporary fixing portion 60 is provided over a wide range in the front-rear direction LD (eg, 0.6 times or more the minimum value of the dimension of the front wing FW in the front-rear direction LD). When providing the temporary fixing parts 60 over a wide range, it is preferable to provide a plurality of small temporary fixing parts 60 such as dots or lines at intervals rather than forming a single large temporary fixing part 60.

The number of times the rear folded portion 30 is folded is not limited as long as it is an even number, but from the viewpoint of ease of manufacture and prevention of increase in thickness due to folding, the minimum number of times is preferably two as shown in the illustrated example. The number of times the front folded portion 40 is folded is not limited as long as it is an odd number, but from the viewpoint of ease of manufacture and prevention of increase in thickness due to folding, the minimum number of folds is preferably one as shown in the illustrated example. Particularly preferred.

The folding positions of the rear folded portion 30 and the front folded portion 40 can be determined as appropriate, and may be different from each other or the same. In particular, as shown in the illustrated example, the rear folded portion 30 includes a proximal portion 31 that is folded back to the center side in the width direction WD at a first position p1 in the width direction WD, and a distal end of this proximal portion 31. The front folded part 40 is folded back to the center side in the width direction WD at a third position p3 in the width direction WD. In the case of only a folded portion, it is preferable that the first position p1 and the third position p3 are at the same position in the width direction WD.

In this case, during manufacturing, from the unfolded state shown in FIG. 14(a), the dorsal portion B is first folded back to the back side at the second position p2 to bring it into the state shown in FIG. 14(b), and then returned to the first position. At the folding position passing through p1 and third position p3, the ventral part F and the dorsal part B are folded back to the front side at once to the state shown in FIG. 15(a), and further in the front-back direction as shown in FIG. 15(b). It can be manufactured by simply folding in half at the fourth position p4 in the center of the LD (that is, by folding three times instead of separately at these four locations). Moreover, in the folded state of the product, the side edges of the ventral part F and the side edges of the dorsal part B coincide, making it compact and good-looking. Note that FIG. 10 is an enlarged view of FIG. 15(b).

The first position p1 and the second position p2 can be determined as appropriate, but from the viewpoint of ease of manufacture, the first position p1 is a position along the side edge of the widest part of the absorbent core 3; Alternatively, it is preferable that the position is along the side edge of the narrowest part of the absorbent body 3. In addition, in the case of the above-mentioned folding structure, the total width W of the unfolded product is W, the dimension in the width direction WD from the center WC of the product in the width direction WD to the first position p1 is X1, and The dimension in the width direction WD from the first position p1 to the second position p2 is defined as X2, the dimension in the width direction WD from the second position p2 to the side edge in the rear folded portion 30 is defined as X3, When the width direction WD dimension is X4, it is desirable to have the following relationship.
W/6 ≦ X1 ≦ W-(2・X4) ... (1)
X4 ≦ X2 ≦ W/6 ... (2)
X4 ≦ X3 ≦ X2 ... (3)

More specifically, X1 is preferably about W/6 to W/4. It is preferable that X2 is approximately 0.5X1 to X1. It is preferable that X3 is approximately 0.7X2 to X2.

In connected disposable wearing articles having a rear wing BW, the width of the rear wing BW in the unfolded state is often wider than the front wing FW. In this case, as shown in the illustrated example, if the portion located closer to the center in the width direction WD than the connecting portion 9 has an elastic region 5x that elastically expands and contracts in the width direction WD, the width of the rear folded portion 30 is It is narrower than before and easier to manufacture.

(others)
From the state shown in FIG. 10, it may be folded one or more times to become even smaller.

The present invention can be used in connected disposable wearing articles such as the tape-type disposable diapers described above.

DESCRIPTION OF SYMBOLS 1...Liquid-impermeable sheet, 2...Top sheet, 3...Absorber, 4...Side barrier sheet, 5...Extension member, 5e...Main body part, 6...Target part, 9...Connection part, 51, 52...Connection 52... Connection protrusion on the side around the leg, 51... Connection protrusion on the waist side, 10... Perforation, 12... Exterior nonwoven fabric, 20... Elastic member, F... Ventral part, B... Dorsal side Part, C...groin area, LD...front and rear direction, WD...width direction, WC...center of width direction, BW...rear wing, FW...front wing, L...full length, W...full width, 5x...stretchable area, 30...rear Folded portion, 40...Front folded portion, 60...Temporarily fastened portion, 31...Proximal end portion, 32...Distal end portion, p1...First position, p2...Second position, p3...Third position, p4 ...Fourth position.

Claims (4)

It has a crotch area including the center in the front-rear direction, a ventral part extending forward from the center in the front-rear direction, and a dorsal part extending rearward from the center in the front-rear direction,
Both sides of the dorsal part have connecting parts that are removably connected to the outer surface of the ventral part,
One side and the other side in the width direction of the back side portion have folded portions that are folded back to the front side an even number of times between the center in the width direction and the connecting portion,
The connecting portion is exposed on the uppermost surface of the rear folded portion,
One side and the other side in the width direction of the ventral side portion have a front folded portion that is folded back an odd number of times to the front side between the center in the width direction and the connecting portion,
The outer surface of the ventral portion is exposed on the uppermost surface of the front folded portion,
The inner surface of the ventral portion and the inner surface of the dorsal portion are folded in two in the front-rear direction so that they face each other, and the connecting portion located on the top surface of the rear folded portion is folded in half on the top surface of the front folded portion. connected to the outer surface of the ventral portion located at;
The connecting portion is located on the outer side in the width direction in the overlapping region of the uppermost surface of the front folded portion and the uppermost surface of the rear folded portion,
A temporary fixing part is provided at the central end in the width direction of the overlapping region, in which the uppermost surface of the front folded part and the uppermost surface of the rear folded part are releasably joined by adhesive or welding. ,
A connected disposable wear article characterized by: A target portion to which the connecting portion is connected is provided on the outer surface of the ventral portion, extending from one side to the other side, and the target portion is exposed on the uppermost surface of the front folded portion. Ori,
The inner surface of the ventral portion and the inner surface of the dorsal portion are folded in two in the front-rear direction so that they face each other, and the connecting portion located on the top surface of the rear folded portion is folded in half on the top surface of the front folded portion. connected to the target portion located at
The connected disposable wearing article according to claim 1. The rear folded portion includes a proximal portion that is folded back toward the center in the width direction at a first position in the width direction, and a distal end that is folded back toward the outside in the width direction at a second position along the tip of the proximal portion. It consists of a side part,
The front folded part consists only of a folded part folded back toward the center in the width direction at a third position in the width direction,
The first position and the third position are at the same position in the width direction,
The connected disposable wearing article according to claim 1 or 2 . The ventral portion has front wings that extend from the groin portion to both sides in the width direction in the unfolded state;
The dorsal portion has a rear wing including an extension portion that extends from the front wing to both sides in the width direction in an expanded state;
The connecting portion is provided on the surface of the extended portion,
The extension portion has an elastic region that elastically expands and contracts in the width direction.
The connected disposable wearing article according to claim 3 .

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