JP2014193208A - Disposable diaper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disposable diaper which is easily fitted on the body of a wearer and has little leakage, when worn, and which can be easily worn even in the case where the wearer has violent body motions or where the wearer wears the diaper while standing up.SOLUTION: A disposable diaper is equipped on both side portions on the backside thereof with fastening base material sheets 8 protruding outward. On the inner side of the material sheets, there are mounted fixing means 5, through which the base material sheets can be fixed on the abdominal side outer surfaces of the diaper. From the leading end sides of the base sheets toward the base end sides, there are provided leading end side openings 11 and base end side openings 18. The leading end portions of the base material sheets are folded inward between the fixing means and the leading end side openings, and the folded base material sheet is further folded to the outer side between the leading end side openings and the base end side openings, so that the leading end side openings and the base end side openings overlap at least partially. Through the fixing means facing from the overlapping openings, the base material sheet can be temporarily locked on the abdominal side outer surface of the diaper.

Description

  The present invention relates to a disposable diaper (hereinafter referred to as a “tape-type diaper”) that is worn on a wearer by fastening fastening tapes provided on both sides of the back side of the diaper to the abdominal surface of the diaper. .

The general procedure for attaching a tape-type diaper is as follows.
First, a third party (caregiver or the like) lays a person who wears a diaper (caregiver or the like) on his back. And the back side part of a diaper is inserted between a wearer's back and bedding. Then, since the inserted diaper becomes difficult to move depending on the weight of the wearer, the subsequent wearing operation is facilitated.

  Next, the ventral part of the diaper is lifted and brought into contact with the wearer's abdomen. A target tape is provided on the outer surface of the ventral portion of the diaper. Thereafter, the fastening tape provided on the back side of the diaper is lifted and brought into contact with the target tape. An engaging member is provided inside the fastening tape, and the fastening tape is fixed to the target tape via the engaging member.

  As described above, it is relatively easy to wear the diaper while the wearer is laid on his back. However, even in such a case, when the wearer's body movement is intense, the diaper inserted between the wearer's back and bedding, etc. moves and is likely to be displaced, making it difficult to wear it. Become. Also, if the wearer is relatively healthy and wears the diaper while the wearer is standing upright, the diaper is not fixed anywhere, so the third party himself keeps the diaper from moving from the wearing position. However, it must be worn and is difficult to wear.

  When mounting is difficult as described above, it is difficult to fasten the fastening tape at an appropriate position on the target tape. As a result, the fit when the diaper is worn is deteriorated, and body fluid is likely to leak from a gap formed between the wearer's body and the diaper.

  In addition, the conventional tape diaper has a strong engagement force when the fastening tape is first fastened to prevent the fastening tape from being easily peeled off due to the body movement of the wearer. It has become. For this reason, after the fastening tape is fixed at an inappropriate position of the target tape, a strong force is required when the fastening tape is peeled off in order to reattach the fastening tape to an appropriate position. Further, when the fastening tape is pulled with a strong force, unintended deformation of the diaper may occur.

  In order to solve such a problem, for example, the invention of Patent Document 1 is disclosed. In the diaper according to the invention of Patent Document 1, a fastening tape is provided on both side edges of a diaper, and an expansion / contraction part that elastically expands and contracts in the diaper width direction is provided between the pair of fastening tapes. With such a configuration, when the diaper is mounted, the fastening tapes can be easily extended to each other, and the fastening tape can be easily reattached or temporarily fixed. In particular, it is excellent in wearability and leakage prevention performance when worn while the wearer is standing.

  Further, although not an invention for solving the above-mentioned problems, an invention such as Patent Document 2 is also disclosed. The diaper according to the invention of Patent Document 2 is provided with a pair of fastening members on both side edges of the diaper, and a position where at least one of the pair of fastening members overlaps with the target tape in a state where the locking member is attached to the target tape. In addition, an opening or a notch that becomes an opening by opening is provided. By adopting such a configuration, for example, when the wearer's body shape is a thin shape, the other fastening member can be overlapped on one fastening member and firmly fixed.

  However, the invention of Patent Document 1 has a problem in that a large number of waistline elastic members must be attached to the corresponding portions in order to form the stretchable portion, which increases the number of materials and increases production costs. Further, the invention of Patent Document 2 cannot solve any of the above-mentioned problems.

Japanese Patent No. 4086576 JP 2011-10822 A

  Then, the main subject of this invention is providing the diaper which is easy to make it fit a wearer's body at the time of mounting | wearing, and is hard to produce a leak. Another object of the present invention is to provide a diaper that can be easily worn even when the wearer's body movement is intense or when the diaper is worn while the wearer is standing.

The present invention that has solved the above problems is as follows.
<Invention of Claim 1>
A fastening base sheet that protrudes outward is provided on both sides of the back side of the diaper, and fastening means including an adhesive layer or a hook-and-loop fastener element is provided on the inner surface of the base sheet, and the fastening means is A disposable diaper adapted to fasten the base sheet on the ventral outer surface of the diaper,
The base sheet is provided with a front end side opening and a base end side opening from the front end side to the base end side of the base sheet,
The tip of the base sheet is folded inward between the fastening means and the tip opening,
The folded base material sheet is further folded outward between the distal end side opening and the proximal end side opening,
At least a portion of the distal opening and the proximal opening overlap,
A disposable diaper characterized in that the base sheet can be temporarily fixed to the outer surface of the diaper of the diaper through fastening means facing from the overlapping opening.

(Function and effect)
When the entire surface of the fastening means is fastened to the outer surface of the diaper of the diaper and temporarily fixed, there is a problem that a strong force is required when the fastening means is peeled off thereafter. Therefore, an opening is provided in the base sheet, and the base sheet is bent so that a part of the fastening means faces the opening. And the fixing means which faces from an opening part was fixed to the ventral | abdominal outer surface of a diaper, and it decided to temporarily fix. At this time, since the part which does not face from the opening part of a fastening means is covered with the base material sheet, it does not fasten with the belly side outer surface of a diaper. Therefore, less force is required to peel off the fastening means than when temporary fastening is performed using the entire surface of the fastening means.

  By performing the temporary fixing, the wearing position of the diaper on the wearer's body can be roughly determined. Then, by pulling from the temporarily fixed state while holding the front end side of the base sheet, the fastening means is peeled off, and the bent base sheet returns to a straight state before being bent. The base sheet in this state is fastened to an appropriate position on the ventral side outer surface of the diaper, and is finally fastened. Since the base sheet is secured at an appropriate position, the diaper fits the wearer's body and the leak is less likely to occur. In addition, by performing the main fastening using the entire surface of the fastening means, the base sheet is hardly peeled off, and the attached diaper can be prevented from unintentionally coming off.

<Invention of Claim 2>
The disposable diaper according to claim 1, wherein a tip of the base sheet protrudes from a fold line generated when the base sheet is folded outward in a state where the base sheet is folded.

(Function and effect)
When the front end side of the base sheet is pulled to release the temporary stop from the temporarily fixed state, the base sheet is easily picked because the front end of the base sheet protrudes from the folding line.

<Invention of Claim 3>
The disposable according to claim 1 or 2, wherein the distal end side opening portion and the proximal end side opening portion have a triangular shape or a circular shape that is convex toward a fold line between the distal end side opening portion and the proximal end side opening portion. Diapers.

(Function and effect)
By making the shape of the front end side opening and the base end side opening into the above-described triangle, the temporary fixing can be easily peeled off.
On the other hand, by making the shape of the opening circular, it is possible to prevent the tear from occurring from the opening toward the periphery.

<Invention of Claim 4>
The disposable diaper according to any one of claims 1 to 3, wherein the engaging force of the fastening means facing the opening portion where the distal end side opening portion and the proximal end side opening portion overlap each other is stronger than the engaging force of the other portion. .

(Function and effect)
By strengthening the engaging force of the fastening means facing from the opening portion, the fastening force at the time of temporary fastening is strengthened, and the base sheet can be prevented from being unintentionally peeled off.

<Invention of Claim 5>
The disposable diaper according to any one of claims 1 to 4, wherein the distal end side opening and the proximal end side opening are formed by bending a punch formed in a base sheet.

(Function and effect)
When the opening is formed in the base sheet, if the entire circumference of the opening is punched, the punched portion becomes dust. Therefore, the generation of dust can be suppressed by punching a part of the opening and bending the punched part.

<Invention of Claim 6>
The punching is formed to have a convex shape from the front end side to the base end side of the base sheet,
The disposable diaper according to claim 5, wherein a tip side end portion of the punching is in contact with a fold line generated when the base sheet is bent, or extends to the tip side beyond the fold line.

(Function and effect)
When the front end side of the punching does not reach the fold line, when the base sheet is folded, there is a high possibility that the bent portion returns to the state before being folded due to the elasticity of the base sheet. Such an inconvenience can be eliminated by making the end portion on the leading end side of the punching reach the folding line.

  As described above, according to the present invention, the fastening base material sheet can be fixed to an appropriate position on the ventral outer surface of the diaper. Therefore, a diaper fits a wearer's body and it becomes difficult to produce a leak. Moreover, even when the wearer's body movement is intense or when the diaper is worn while the wearer is standing, the wearing becomes easy.

It is the partially broken top view which looked at the disposable diaper which concerns on this invention from the top sheet side. It is an enlarged view of the base material sheet part of FIG. It is a figure when the front-end | tip part of the base material sheet of FIG. 2 is bend | folded inside between a fixing means and a front end side opening part. It is a figure when the said base material sheet | seat folded in FIG. 3 is further bend | folded outside between the front end side opening part and the base end side opening part. It is sectional drawing of the AA part of FIG. It is sectional drawing of the BB part of FIG. It is sectional drawing of CC part of FIG. FIG. 3 is a perspective view of FIG. 2. FIG. 4 is a perspective view of FIG. 3. FIG. 5 is a perspective view of FIG. 4. It is an enlarged view of the base material sheet part which concerns on another Example. It is a figure when the front-end | tip part of the base material sheet of FIG. 11 is bend | folded inside between a fastening means and a front end side opening part. It is a figure when the said base material sheet | seat folded in FIG. 12 is further bend | folded outside between the front end side opening part and the base end side opening part. It is sectional drawing of the DD part of FIG. It is sectional drawing of the EE part of FIG. It is sectional drawing of the FF part of FIG. FIG. 12 is a perspective view of FIG. 11. FIG. 13 is a perspective view of FIG. 12. FIG. 14 is a perspective view of FIG. 13. (A) It is the example which made the front end side opening part and the base end side opening part the same area. (B) It is the example which shifted the position of the front end side opening part and the base end side opening part. (C) It is the example which made the shape of the front end side opening part and the base end side opening part into the triangle which becomes convex shape toward the fold line between the front end side opening part and the base end side opening part. (D) This is an example in which only one protrusion is provided. (E) This is an example in which no protrusion is provided. (F) This is an example in which bending lines are provided obliquely and the positions of the distal end side opening and the proximal end side opening are shifted. (G), (H) It is the example which increased the number of front end side opening parts and base end side opening parts. (I) It is the example which made the shape of the front end side opening part and the base end side opening part into the convex arc shape toward the base end side from the front end side of a base material sheet. (J) It is the example which made the shape of the front end side opening part and the base end side opening part the convex triangle toward the base end side from the front end side of a base material sheet.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.
In addition, in the state which developed the disposable diaper which concerns on this invention, the surface near a wearer is called an "inner surface", and the surface far side is called an "outer surface." Further, the side closer to the wearer is referred to as “inner side”, and the far side is referred to as “outer side”. Furthermore, regarding the base material sheet 8, the width direction outer side of the disposable diaper is referred to as “tip side” and the width direction center side is referred to as “base end side” in the state where the base material sheet 8 is unfolded.

(Diaper overall structure)
FIG. 1 shows a disposable diaper 200 according to the present invention. This disposable diaper 200 has a crotch part, and a ventral part F and a back part B extending on both front and rear sides thereof. The dimensions of each part can be determined as appropriate.

  The tape-type disposable diaper 200 according to the present embodiment has a structure in which the back sheet 1 is provided on the outer surface side, and the liquid-impermeable sheet 15, the absorber 3, and the top sheet 2 are laminated in order toward the inner surface side. ing. Although not shown, a second sheet 16 may be provided between the absorber 3 and the top sheet 2.

  In the present invention, the sheet on the side closest to the wearer's skin is referred to as the top sheet 2. The top sheet 2 is composed of a plurality of unit sheets.

  A liquid-impermeable sheet 15 is provided outside the absorber 3 so as to protrude slightly from the periphery of the absorber 3. The liquid-impermeable sheet 15 is preferably a sheet having a water barrier property, and besides a polyethylene film, a sheet having moisture permeability can be used without impairing the water barrier from the viewpoint of preventing stuffiness. This water-impervious / breathable sheet is a microporous sheet obtained by, for example, melt-kneading an inorganic filler in an olefin resin such as polyethylene or polypropylene to form a sheet, and then stretching in a uniaxial or biaxial direction. Can be used.

  Further, the outer surface of the liquid-impermeable sheet 15 is covered with a back sheet 1 made of a non-woven fabric, and this back sheet 1 eats outside the periphery of the liquid-impermeable sheet 15 with a predetermined protrusion width. I'm out. As the back sheet 1, various nonwoven fabrics can be used. As the material fiber constituting the nonwoven fabric, synthetic fibers such as polyethylene or polypropylene, synthetic fibers such as polyester and amide, recycled fibers such as rayon and cupra, and natural fibers such as cotton can be used.

  As described above, the second sheet 16 may be provided on the inner surface of the absorber 3. The width of the second sheet 16 may be provided so that the absorber 3 partially protrudes from the side edge of the second sheet 16, or the width of the second sheet 16 is increased so that the side edge of the absorber 3 does not protrude. You can also. As the second sheet 16, a perforated or non-porous nonwoven fabric or a perforated plastic sheet is used. As the material fiber constituting the nonwoven fabric, synthetic fibers such as polyethylene or polypropylene, synthetic fibers such as polyester and amide, recycled fibers such as rayon and cupra, and natural fibers such as cotton can be used. In the present invention, a form in which the second sheet 16 is omitted can be considered.

  Moreover, the front target tape 6 is provided along the width direction on the ventral surface of the diaper. A diaper is attached to the body by fastening a surface fastener element 9 described later to the front target tape 6.

(Substrate sheet)
Fastening base material sheet 8 is provided between back sheet 1 and top sheet 2 at both ends in the back side direction of disposable diaper 200. The base sheet 8 and the back sheet 1 or the top sheet 2 are bonded with a hot melt adhesive or the like. Note that the base sheet 8 is not necessarily provided between the back sheet 1 and the top sheet 2. Specifically, it may be provided on the outer surface side of the back sheet 1 or the inner surface side of the top sheet 2.

  The base sheet 8 is fixed to the diaper main body by a hot melt adhesion or the like. And it is provided so that it may extend toward the front end side from the base end side.

The base material sheet 8 can be formed by laminating a plurality of nonwoven fabrics NF, or can be formed by a single nonwoven fabric NF. As this nonwoven fabric NF, a known one can be used. As a raw material fiber constituting the nonwoven fabric NF, synthetic fibers such as polyethylene or polypropylene such as olefin, polyester and amide, recycled fibers such as rayon and cupra, and natural fibers such as cotton can be used. Moreover, as a processing method of nonwoven fabric NF, well-known methods, such as the spunlace method, the spunbond method, the SMS method, the thermal bond method, the melt blown method, the needle punch method, the air through method, the point bond method, can be used. In particular, a spunbond nonwoven fabric and an SMS nonwoven fabric using olefin fibers are preferable. The basis weight of the non-woven fabric NF to be used can be appropriately determined. However, since it needs to touch the wearer's skin and needs a certain strength, a high-weight non-woven fabric is desirable, preferably 50 to 100 g / m ² . It preferably has a basis weight.

(Protruding part)
As shown in FIG. 21D, a protruding portion 12 that protrudes outward may be formed on the leading end side of the base sheet 8. Note that the protrusion 12 may not be provided as shown in FIG. The projecting portion 12 may be formed by projecting the base sheet 8 itself outward, or a member separate from the base sheet 8 is prepared, and the base sheet is formed by hot melt or the like. It may be formed by being fixed to 8. When the protruding portion 12 is formed of a member separate from the base sheet 8, a non-woven fabric or an elastic elastic member can be used as the material. Examples of the elastic elastic member include materials such as styrene rubber, olefin rubber, urethane rubber, ester rubber, polyurethane, polyethylene, polystyrene, styrene butadiene, silicon, and polyester. As a nonwoven fabric, the raw material similar to the said base material sheet 8 can be used, for example. In addition, even if it is a case where the protrusion part 12 is formed using the member separate from the base material sheet 8, the protrusion part 12 is regarded as a part of the base material sheet 8, and this invention is demonstrated.

  In addition, as shown in FIG. 2, the projecting portion 12 may be provided in two upper and lower stages. Further, the protrusions 12 having three or more upper and lower stages may be provided, but considering the ease of manufacturing and convenience at the time of mounting, it is preferable that the number of stages is smaller, and that the upper and lower two stages are preferable.

(Easy tear line)
As shown in FIG. 2, a portion (valley portion 13) in which both the protruding portions 12 are separated is formed between the protruding portion 12 and the protruding portion 12. It is preferable to form easy tear lines 10 on the base material sheet 8 between the valley portions 13 from the distal end side toward the proximal end side. The easy tear line 10 may be a perforation, or may be a plurality of through holes having a circular shape or an elliptical shape with a predetermined interval. And when wearing a diaper, this easy tear line 10 is torn, the base material sheet 8 divided into upper and lower is made to cross, and it stops on the front outer surface of a diaper (henceforth "cross stop"), The diaper can be fitted to a thin wearer. In addition, although the length of the easy tear line 10 can be determined arbitrarily, in order to perform the said cross stop, the longer one is preferable.

(Fixing means)
Fastening means 5 such as an adhesive layer 20 and a hook-and-loop fastener element 9 are provided on the inner surface of the protruding portion 12 or the inner surface of the base sheet 8 on the front end side. As the pressure-sensitive adhesive layer 20, for example, an acrylic adhesive mainly composed of a polyacrylate ester, a tackifier mainly composed of an elastic component of natural rubber or synthetic rubber, a plasticizer, A rubber adhesive or the like in which an anti-aging agent or the like is blended can be used. In addition, a hot melt adhesive or the like can also be used. Moreover, as the hook_and_loop | surface fastener element 9, the hook material and loop material of a hook_and_loop | surface fastener can be used.

  When the hook-and-loop fastener element 9 is provided as the fixing means 5, the front target tape 6 and the hook-and-loop fastener element 9 provided on the ventral surface of the diaper can be detachably fixed. For example, when the hook-and-loop fastener element 9 provided on the protruding portion 12 is a hook material, the front target tape 6 is a loop material. Further, when the hook-and-loop fastener element 9 provided on the protruding portion 12 is a loop material, the front target tape 6 is a hook material. As the protrusion shape of the hook material, a known shape can be used, and examples thereof include a bowl shape, a mushroom shape, and a complex shape.

  As will be described later, in the present invention, when the base sheet 8 is provided with the front end side opening 11 and the base end side opening 18 and the base sheet 8 is folded, it is shown in FIGS. In this way, a part of the fastening means 5 faces from the overlapping opening of the distal end opening 11 and the proximal opening 18. It is preferable to make the engaging force of the fastening means 5 facing from the overlapping openings stronger than the engaging force of other portions. By strengthening the engaging force of the fastening means 5 facing the overlapped opening, it is possible to prevent the fastening force at the time of temporary fastening from becoming extremely weak. It is possible to prevent the sheet 8 from being unintentionally peeled off.

  The peel strength between the hook-and-loop fastener element 9 and the front target tape 6 is preferably 30 to 300 gf at the time of temporary fixing and 300 to 800 gf at the time of final fixing. By making the peeling strength at the time of temporary fixing within the above range, the base sheet 8 can be easily peeled when shifting from temporary fixing to main fixing. Moreover, it can prevent that the base material sheet 8 peels unintentionally after carrying out this stop by making peeling strength at the time of this stop in the said range.

(Front end side opening, proximal end side opening)
As shown in FIG. 2, the base sheet 8 is provided with a distal end opening 11 and a proximal end opening 18 from the distal end side to the proximal end side of the base sheet 8. Although the number of the front end side openings 11 and the base end side openings 18 can be arbitrarily determined, it is preferable to determine the number of times of bending of the base sheet 8 as a reference. For example, as shown in FIG. 10, when the base sheet 8 is folded twice, in order to face the fixing means 5 from the overlapping opening, as shown in FIG. 11 and the base end side opening 18 must be provided at least one each. Similarly, when the base sheet 8 is folded four times, in order to face the fixing means 5 from the overlapping opening, as shown in FIGS. 23 (G) and 23 (H), the tip It is necessary to provide at least two side openings 11 and two base end openings 18 respectively.

  At this time, when two openings are provided from the distal end side to the proximal end side of the base sheet 8, the opening portion on the distal end side is called the distal end side opening portion 11, and the opening portion on the proximal end side is based on the opening portion on the proximal end side. This is referred to as an end opening 18. When three or more openings are provided from the front end side to the base end side of the base sheet 8, the opening close to the front end side of the base sheet 8 is referred to as a front end opening 11, The near opening is referred to as a proximal end opening 18.

  The distal end side opening 11 and the proximal end side opening 18 can be formed, for example, by punching the base sheet 8. Various known methods can be used for this punching method. For example, metal processing to make a metal blade in a specified shape and punch it by pressing it from above, roll processing to punch by rotating several rolls attached to a metal roll and rotating the roll, laser And laser processing that cuts using s.

  Moreover, when the front end side opening 11 and the base end side opening 18 are formed in the base sheet 8, if the entire circumference of the opening is punched, the punched portion becomes dust. Therefore, as shown in FIG. 17, a part of the opening may be punched and the punched part may be bent. In this way, generation of dust can be suppressed.

  Further, the shapes of the distal end side opening 11 and the proximal end side opening 18 are such that the distal end of the base sheet 8 is folded when the base sheet 8 is folded, as shown in FIGS. It is preferable to use a triangular shape that is convex toward the side. By setting it as such a shape, the fastening area at the time of temporarily fastening becomes narrower toward the front end side of the base material sheet 8. As a result, when the tip end side of the base material sheet 8 is picked and the temporary fixing is peeled off, the resistance received first is reduced, so that the base material sheet 8 can be easily peeled off.

  Moreover, as shown in FIG. 2, you may make the shape of the front end side opening part 11 and the base end side opening part 18 circular. When the shape of the opening is a polygonal shape, it is possible that tearing occurs from each vertex, but this can be prevented by making it circular.

  In the case where the opening is formed by punching a part of the opening and bending the punched part, the punching shape is based on the basic shape as shown in FIG. 24 (I), FIG. It is preferable to form a convex triangle or arc shape from the front end side to the base end side of the material sheet 8. As described above, the temporary fixing is performed by using the fixing means 5 that folds the base sheet 8 and faces the overlapping opening portion of the distal end side opening 21 and the proximal end opening 22. At this time, in order to prevent the portion bent to form the opening from being covered with the fastening means 5, it is preferable to punch into the shape as described above.

  In addition, in order to punch out a part of opening part and to form the front end side opening part 21 and the base end side opening part 22, it is necessary to bend the base material sheet 8. FIG. Examples of the bent portion include a line connecting both end portions 25 and 25 of the punched portion of the distal end side opening portion 21 and a line connecting both end portions 26 and 26 of the punched portion of the proximal end side opening portion 22. . However, when bending at these locations, it is necessary to bend the number of openings, which is troublesome. Therefore, as shown in the front end side opening portion 21 in FIG. 11, the fold line 14 generated when the front end side end portions 25 and 26 of the punching when the part of the opening portion is punched is folded. , 17 is preferable. Alternatively, as shown in the base end side opening 22 in FIG. 11, it is preferable that the leading end portions 25 and 26 of the punching extend beyond the folding lines 14 and 17 to the leading end side. When the base sheet 8 is folded along the folding lines 14 and 17, the insides 23 and 24 of the punching are bent when the front end portions 25 and 26 of the punching reach the folding lines 14 and 17. By following and reversing, the openings 21 and 22 can be formed. Therefore, the operation | work which bends the line which connects the both ends 25 and 25 of the punching part of the front end side opening part 21, and the line which connects the both ends 26 and 26 of the punching part of the base end side opening part 22 becomes unnecessary.

  As shown in FIGS. 4 and 13, in the present invention, it is preferable that the base sheet 8 is folded in advance in a product state so that temporary fixing can be easily performed. At this time, it is preferable that the base sheet 8 facing each other is lightly bonded with a hot melt adhesive or the like so that the folded state cannot be easily unwound. In this case, as shown in FIG. 2, when the area of the front end side opening 11 is made larger than the area of the base end side opening 18, the stop provided on the front end side of the base sheet 8 as shown in FIG. A part of the attaching means 5 is fixed to the base sheet 8 around the proximal end opening 18 through the distal end opening 11. Therefore, the folded state can be maintained without using the hot melt adhesive or the like.

  If the effects as described above are not expected, the areas of the distal end side opening 11 and the proximal end side opening 18 can be arbitrarily determined. However, when temporarily fixing, in order to prevent the entire surface of the fixing means 5 from being fixed to the ventral outer surface of the diaper, the area of either the distal end side opening 11 or the proximal end side opening 18 is It is preferable to make it smaller than the area of the fastening means 5.

  Moreover, when both the area of the front end side opening part 11 and the base end side opening part 18 is larger than the area of the fastening means 5, a change is made to the bending part of the base material sheet 8, and the front end side opening part 11 and A part of the base end side opening 18 may overlap so that the area of the overlapped opening is smaller than the area of the fastening means 5.

  Further, the opening positions of the distal end side opening 11 and the proximal end side opening 18 can be arbitrarily determined. However, when the base material sheet 8 is bent, a part of each opening part must be overlapped, and the fastening means 5 must face the overlapping opening part. For example, as shown in FIG. 20A, the fastening means 5, the distal end side opening 11, and the proximal end opening are arranged in a straight line from the distal end side to the proximal end side of the base sheet 8. 18 may be provided. Further, if a part of the distal end side opening portion 11 and the proximal end side opening portion 18 overlap each other and the fastening means 5 can be formed to face the overlapping opening portion, as shown in FIG. The fastening means 5, the distal end side opening 11, and the proximal end side opening 18 may be provided so as to meander from the distal end side to the proximal end side of the material sheet 8.

  The bent portion of the base sheet 8 can also be arbitrarily determined. However, in this case as well, a state in which a part of the distal end side opening portion 11 and the proximal end side opening portion 18 overlap and the fastening means 5 faces from the overlapping opening portion must be formed. Therefore, it does not necessarily have to be bent in the direction perpendicular to the virtual perpendicular extending from the front end side to the base end side of the base sheet 8, and as shown by a bend line 17 in FIG. You may bend it diagonally.

(Temporary fastening, permanent fastening)
As shown in FIG. 9, the base material sheet 8 in which the front end side opening 11 and the base end side opening 18 are formed is such that the front end portion of the base material sheet 8 is between the fastening means 5 and the front end side opening 11. It can be folded inward. Then, as shown in FIG. 10, the bent base sheet 8 is further bent outward between the distal end side opening 11 and the proximal end side opening 18. If it does so, at least one part of the front end side opening part 11 and the base end side opening part 18 will overlap, and the fixation means 5 comes to face from the overlapping opening part. In the present invention, the base sheet 8 can be temporarily fixed to the outer surface of the diaper of the diaper through the fixing means 5 facing from the overlapping opening portions.

  By performing temporary fixing in this way, it is possible to roughly determine the wearing position of the diaper on the wearer's body. Then, from the temporarily fixed state, the holding means 5 is peeled off by pulling by holding the tip end side of the base material sheet 8 and the bent base material sheet 8 returns to a straight state before being bent. . The base sheet 8 in this state is fastened to an appropriate position on the ventral side outer surface of the diaper, and is finally fastened. Since the base sheet 8 is fastened at an appropriate position, the diaper fits the wearer's body and the leak is less likely to occur. Further, by performing the main fastening using the entire surface of the fastening means 5, the base material sheet 8 becomes difficult to peel off, and the attached diaper can be prevented from coming off unintentionally.

  In general, when the fastening means 5 is fastened to the ventral outer surface of the diaper and temporarily fixed, a strong force is required when the fastening means 5 is peeled off thereafter. However, with the configuration of the present invention, as shown in FIG. 10, the portion of the fastening means 5 that does not face the opening is covered with the base sheet 8, so that the stomach side of the diaper It will not stick to the outer surface. Therefore, there is an effect that less force is required to peel off the fastening means 5 than when temporary fastening is performed using the entire surface of the fastening means 5.

  Moreover, when the base material sheet 8 is bent outward as described above, a fold line 17 is likely to be generated in the bent portion. At this time, as shown in FIG. 10, it is preferable that the tip of the base sheet 8 protrudes from the fold line 17. By protruding the tip of the base sheet 8 from the fold line 17, the tip of the base sheet 8 can be easily picked, and from the temporarily fixed state, the leading end side of the base sheet 8 is pulled to release the temporary fix. It becomes easy.

  In addition, when the base sheet 8 is bent, the bent lines 14 and 17 are not formed on the base sheet 8 when the bent portion is not pressed or when the pressing pressure is weak. In the present invention, in such a case, when it is assumed that the fold lines 14 and 17 are pressed with such a pressure that the fold lines 14 and 17 are formed, the positions where the fold lines 14 and 17 are generated are used as references. The formation position of the base end side opening 18 is determined.

(Production method)
In the manufacture of the base sheet 8 according to the present invention, in order to reduce waste members, the shape of the spacing portion 13 between the upper and lower protrusions 12 and the shape of the protrusion 12 are axisymmetric. Is preferred.

  And the manufacturing process of this base material sheet 8 first pays out the base material sheet 8 of a predetermined width, and adheres the hook-and-loop fastener element 9 continuously to the center position. At this time, an adhesive layer 20 may be applied instead of the hook-and-loop fastener element 9. Then, the hook-and-loop fastener elements 9 or the adhesive layer 20 are alternately cut across a continuous wavy curve. At the same time, a cutting line for dividing the base material sheet 8 is entered, and an easy tear line 10 is placed at a predetermined position for each base material sheet 8.

  Further, the base sheet 8 is provided with a distal end side opening 11 and a proximal end side opening 18. Each opening can be formed, for example, by punching the entire circumference of the opening. In addition, in order to suppress the generation of dust, a part of the opening may be punched and the punched part may be bent.

  Then, the base sheet 8 manufactured as described above is attached to both ends of the diaper in the back side direction by hot melt bonding or the like. The distal end portion of the attached base sheet 8 is folded inward between the fastening means 5 and the distal end side opening portion 11, and the folded base sheet 8 is folded into the distal end side opening portion 11 and the proximal end side opening. It is further bent outward from the portion 18. Thereby, at least a part of the distal end side opening portion 11 and the proximal end side opening portion 18 overlap each other, and the fastening means 5 faces the overlapping opening portion.

  DESCRIPTION OF SYMBOLS 1 ... Back sheet, 2 ... Top sheet, 3 ... Absorber, 4 ... Barrier sheet, 5 ... Fastening means, 6 ... Front target tape, 7 ... Thread-like elastic elastic member, 8 ... Base material sheet, 9 ... Surface fastener element DESCRIPTION OF SYMBOLS 10 ... Easy tear line, 11 ... Front end side opening part, 12 ... Protrusion part, 13 ... Valley part, 14 ... Bending line (valley folding), 15 ... Liquid impervious sheet, 16 ... Second sheet, 17 ... Bending line (Mountain fold), 18 ... proximal end side opening, 20 ... pressure-sensitive adhesive layer, 21 ... in particular, a part punched out of the distal end side opening 11, 22 ... 23: inside of punching of the opening 21 on the front end side (formed by punching only part), 24: inside of punching of the opening 22 on the base side (formed by punching only part), 25 ... Front end opening 21 (end punched part) 26: base end opening 22 (part punched end part) F: ventral part B ... back part EF end Flap part, SF ... Side flap part

Claims (6)

A fastening base sheet that protrudes outward is provided on both sides of the back side of the diaper, and fastening means including an adhesive layer or a hook-and-loop fastener element is provided on the inner surface of the base sheet, and the fastening means is A disposable diaper adapted to fasten the base sheet on the ventral outer surface of the diaper,
The base sheet is provided with a front end side opening and a base end side opening from the front end side to the base end side of the base sheet,
The tip of the base sheet is folded inward between the fastening means and the tip opening,
The folded base material sheet is further folded outward between the distal end side opening and the proximal end side opening,
At least a portion of the distal opening and the proximal opening overlap,
A disposable diaper characterized in that the base sheet can be temporarily fixed to the outer surface of the diaper of the diaper through fastening means facing from the overlapping opening.   The disposable diaper according to claim 1, wherein a tip of the base sheet protrudes from a fold line generated when the base sheet is folded outward in a state where the base sheet is folded.   The disposable according to claim 1 or 2, wherein the distal end side opening portion and the proximal end side opening portion have a triangular shape or a circular shape that is convex toward a fold line between the distal end side opening portion and the proximal end side opening portion. Diapers.   The disposable diaper according to any one of claims 1 to 3, wherein the engaging force of the fastening means facing the opening portion where the distal end side opening portion and the proximal end side opening portion overlap each other is stronger than the engaging force of the other portion. .   The disposable diaper according to any one of claims 1 to 4, wherein the distal end side opening and the proximal end side opening are formed by bending a punch formed in a base sheet. The punching is formed to have a convex shape from the front end side to the base end side of the base sheet,
The disposable diaper according to claim 5, wherein a tip side end portion of the punching is in contact with a fold line generated when the base sheet is bent, or extends to the tip side beyond the fold line.

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