JP4275321B2 - Disposable diapers - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
[0002]
The present invention relates to a disposable diaper with improved fit to the wearer.
[Prior art]
[0003]
In general, disposable disposable diapers consist of a liquid-permeable top sheet located on the wearer side, a liquid-impermeable back sheet located on the anti-wearer side, and a waistline portion and a leg circumference between these two sheets. And a double-sided pressure-sensitive adhesive tape attached to both ends in the width direction of the waistline portion on the back side is joined to the waistline portion on the front side. Yes. The waistline portion is provided with a number of elastic elastic members for waistline extending in the width direction (for example, rubber thread, stretchable film, etc.), and the waistline portion is worn by the waistline elastic member. It is designed to be fitted in a state that securely fits the body of the car.
[Problems to be solved by the invention]
[0004]
However, in the case of the conventional paper diaper described above, since the elastic elastic member for the waistline is also disposed at the portion corresponding to the absorbent body, the absorbent body is wrinkled due to the expansion and contraction action of the elastic elastic member for the waistline. The fit between the body and the buttocks may be impaired. Moreover, when wrinkles occur in the absorber, there may be a problem that liquid leakage is likely to occur.
[0005]
Furthermore, in the conventional paper diaper, although the fit property of the waistline can be ensured by the elastic stretchable member for the waistline, there is a problem that the fit property of the buttocks is difficult to secure because the stretch is only the effect in the width direction. If the attachment width of the elastic elastic member is widened in order to ensure the fit of the heel part, there is a risk that the absorber contracts as described above and the absorptivity is hindered.
[0006]
This invention is made | formed in view of said point, and it aims at ensuring the fit property of a trunk periphery, without impairing the absorptivity of an absorber.
[Means for Solving the Problems]
[0007]
In the invention of claim 1, as means for solving the above-mentioned problems, a liquid-permeable top sheet located on the wearer side, a liquid-impermeable back sheet located on the anti-wearer side, and both In a paper diaper provided with an absorbent body interposed between the sheets and in the middle portion of the waistline portion and the leg periphery portion, a number of waistline elastic elastic members extending in the width direction are disposed in the waistline portion, and Back sheet The region corresponding to the absorber In , Many through holes , Or from the top sheet side Above Numerous hollows protruding toward the back seat Of the waist elastic elastic members arranged corresponding to the absorber at positions corresponding to the numerous through holes or the numerous recessed holes. Disconnected.
[0008]
the above With the above configuration, due to the stretchability of the elastic elastic member for the waistline, the waistline portion fits well to the wearer's waistline, and the absorber among the elastic stretchable members in the portion corresponding to the absorber Are arranged in correspondence with a number of through holes formed in the back sheet or a number of recessed holes protruding from the top sheet side toward the back sheet side formed in the back sheet. In the corresponding position It is possible to obtain a disposable diaper that is low in cost and free from the risk of liquid leakage, by simply cutting it, so that the absorber does not shrink and impair the absorbability. In addition, the air permeability is improved by forming the through hole or the recessed hole.
[0009]
According to a second aspect of the present invention, in the disposable diaper according to the first aspect, an inner end portion of the elastic member for waistline that is disposed corresponding to the absorber is disposed outside an outer edge of the absorber. If it is positioned on the side, the elastic elastic member for waistline and the absorbent body will not overlap, so that the absorbent body will not shrink and the absorbent property will not be lost, and a paper diaper that is low in cost and does not cause liquid leakage is obtained. be able to. In addition, the elastic elastic member can be arranged as wide as possible in the width direction within a range that does not impair the absorbability of the absorber. Therefore, the fit to the wearer is further improved.
[0010]
According to a third aspect of the present invention, in the disposable diaper according to the first aspect, an inner end portion of the elastic elastic member for waistline that is disposed corresponding to the absorber is located inside an outer edge of the absorber. If it is positioned on the side, the area where the elastic elastic member for the waistline and the absorbent body overlap is reduced as much as possible, so the absorbent body will not shrink and impair the absorbability, and the liquid may be leaked at low cost. You can get a disposable diaper. In addition, the elastic elastic member can be arranged as wide as possible in the width direction within a range that does not impair the absorbability of the absorber. Therefore, the fit to the wearer is further improved.
[0011]
As in the invention of claim 4, in the paper diaper according to any one of claims 1, 2, and 3, a mechanical tape for joining the waistline portions to the inside of both ends in the width direction of the waistline portion Since the waistline is joined by the mechanical tape attached to the stretchable portion in the width direction, the fit of the waistline part is improved.
[0012]
In the paper diaper according to any one of claims 1, 2, 3, and 4 as in the invention of claim 5, both ends of the preliminarily waterproof film are arranged in fixing the absorbent body on the waterproof film. When processing is performed so that the stiffness of the side edge portion of the absorber is increased by folding back the portion, the stiffness of the side edge portion of the absorber becomes stronger.
DETAILED DESCRIPTION OF THE INVENTION
[0013]
Hereinafter, reference examples and preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
[0014]
First reference example
The paper diaper concerning the 1st reference example of this invention is shown by FIG. 1 and FIG.
[0015]
This paper diaper is a tape type, and as shown in FIGS. 1 and 2, a liquid-permeable top sheet 1 located on the wearer side and a liquid-impermeable back sheet located on the anti-wearer side 2 and an absorbent body 3 interposed between the two sheets 1 and 2 and at the center of the waist portions A and A and the leg portion B.
[0016]
The back sheet 1 is formed by laminating and fixing two air-permeable and liquid-permeable nonwoven fabrics, and between these nonwoven fabrics, the waistline portion A is provided in order to improve the waistline fit between the front body and the back body. , A, a number of elastic elastic members 4 for the waistline extending in the width direction are disposed at positions excluding a portion corresponding to the absorber 3. The interval and the number of the elastic elastic members 4, 4.. For the waistline are determined as appropriate, and are preferably about 5 to 7 at intervals of about 4 to 6 mm, for example. In order to further improve the fit of the waistline, it is desirable to provide elastic waist elastic members 4, 4... For the waistline in the width direction of the flap portions without the absorber 3.
[0017]
As shown in FIGS. 1 and 2, the absorbent body 3 is made of a nonwoven fabric or the like, and has a rectangular liquid-permeable top sheet 1 that directly touches the wearer's skin, and from the back surface of the absorbent body 3 to the front surface side. It is wrapped in a rectangular liquid-impermeable waterproof film 5 that wraps around and covers both sides on the surface side in a frame-wrapped form to constitute the absorbent main body C, and has a rectangular shape with a certain degree of rigidity. Yes. These are bonded and integrated by a hot melt adhesive (* w in the figure is the bonding portion). The absorbent body 3 is preferably composed mainly of defibrated pulp and used in combination with a polymer-absorbing polymer. The waterproof film 5 is a polyethylene film. When it is necessary to increase the absorption capacity, it is desirable to interpose a liquid-permeable second sheet 1 ′ between the liquid-permeable top sheet 1 and the absorber 3 as shown in FIG.
[0018]
The absorbent main body C is bonded and integrated with the back sheet 2 by a hot melt adhesive, leaving only a small part on both sides of the waterproof film 5.
[0019]
Standing cuffs D and D for leg rotations projecting toward the wearer are formed on both sides of the absorbent main body C, and the standing cuffs D are substantially continuous in the width direction. And elastic elastic members 8, 8... Made of thread rubber disposed in the standing sheet 7. The standing sheet 7 is a liquid impermeable or hydrophobic double sheet.
[0020]
Further, the inner ends of the waist elastic elastic members 4, 4... Are positioned inward from the outer edge of the absorber 3. Further, of the elastic elastic members 4,... For the waistline, those provided at the mouth edge of the waistline A are not superposed on the absorber 3. In some cases, the inner ends of the waist elastic elastic members 4, 4... Are positioned outside the outer edge of the absorber 3.
[0021]
Furthermore, mechanical tapes 9, 9 for joining the waist parts A, A to each other are attached to the insides of both ends in the width direction of the waist parts A, A, respectively. The mechanical tape 9 in one waistline portion A is attached to the wearer side (shown by a solid line in FIG. 1), and the mechanical tape 9 in the other waistline portion A is attached to the anti-wearer side (shown by a chain line in FIG. 1).
[0022]
In the paper diaper configured as described above, the following effects can be obtained.
[0023]
Due to the stretchability of the elastic elastic members 4, 4.. For the waistline, the waistline portions A and A fit well around the wearer's waistline, and an elastic stretchable member is disposed at a portion corresponding to the absorber 3. Therefore, the absorber 3 will not shrink and impair the absorbability, and there will be no fear of liquid leakage.
[0024]
Moreover, the elastic elastic members 4 and 4 are positioned within the outer edge of the absorbent body 3 so that the absorbability of the absorbent body 3 is not impaired. 4, 4... Can be arranged as wide as possible in the width direction. Therefore, the fit to the wearer is further improved.
[0025]
Moreover, since the waist parts A and A will be joined by the mechanical tapes 9 and 9 attached to the stretchable part in the width direction, the fit of the waist parts A and A will be further improved. Become.
[0026]
Second reference example
FIG. 3 shows a disposable diaper according to a second reference example of the present invention.
[0027]
In this case, the leg-surrounding part B is provided with leg-stretching elastic telescopic members 10, 10,... Along the rim of the leg-surrounding part B, and the leg-surrounding elastic telescopic members 10, 10,. The inner end portion is positioned inward from the outer edge of the absorber 3. If it does in this way, the fitting property to a heel part will improve significantly by the stretchability of the elastic elastic members 10 for leg rotations along the lip of the leg periphery B. In addition, since the inner ends of the leg elastic elastic members 10, 10... Are positioned inward from the outer edge of the absorbent body 3, the legs are within a range that does not impair the absorbability of the absorbent body 3. The elastic elastic members for rotation 10, 10,... Can be arranged as wide as possible in the width direction, and the fit to the wearer is further improved. In some cases, the inner end portion of the leg-hole elastic elastic member 10 is positioned outside the outer edge of the absorber 3. Other configurations and operational effects are the same as those in the first reference example, and thus description thereof is omitted.
[0028]
Third reference example
FIG. 4 shows a disposable diaper according to a third reference example of the present invention.
[0029]
In this case, urethane foam or an elastic film is used instead of the thread rubber as the elastic elastic member 4 for the waistline disposed at the rim portion of the waistline portions A and A. Other configurations and operational effects are the same as those in the first reference example, and thus description thereof is omitted.
[0030]
First embodiment
The paper diaper concerning the 1st Embodiment of this invention is shown by FIG. 5 and FIG.
[0031]
In this case, the waistline portion A is provided with a plurality of waistline elastic elastic members 4, 4... Extending in the width direction, and corresponds to the absorber 3 among the elastic body elastic members 4, 4. In the arrangement, stretchability reducing means E for reducing stretchability is applied. In this case, as the stretchability reducing means E, means for cutting the waist elastic stretchable members 4, 4,. In this case, due to the stretchability of the elastic members 4, 4.. For the waistline, the waistline portions A and A fit well to the wearer's waistline, and the waistline at the portion corresponding to the absorber 3 The stretchability of the elastic stretchable members 4, 4... Is lowered by the cutting means that is the stretchability reducing means E. Therefore, the absorber 3 is not shrunk to impair the absorbability, and there is no fear of liquid leakage. In addition, the elasticity of the waist elastic elastic members 4, 4... Can be lowered simply by cutting the waist elastic elastic members 4, 4. Other configurations and operational effects are the same as those in the first reference example, and thus description thereof is omitted.
[0032]
Next, with reference to FIGS. 7 to 13, a method for cutting the elastic elastic member in the disposable diaper according to the present embodiment will be described in detail.
[0033]
A belt-like lower sheet 21 having a predetermined width is provided with an adhesive application unit 22 and a non-application unit 23 alternately by a hot melt adhesive application machine (not shown), while the right side to the left side (as indicated by arrows) ) In some cases, the adhesive is applied continuously in the longitudinal direction of the sheet.
[0034]
The plurality of elastic elastic members 4, 4... Are drawn from an elastic member roll (not shown) and guided by a guide guide 31 in a state where a predetermined tension is applied by passing through a tension roll (not shown). Affixed to the sheet 21. At this time, the elastic elastic members 4, 4.. The lower sheet 21 and the elastic elastic members 4, 4. Thus, a laminate in which the elastic elastic members 4, 4,... Are sandwiched between the upper and lower sheets 41, 21 (that is, the back sheet 2 in a paper diaper) is formed.
[0035]
Subsequently, the back sheet 2 as the laminate is inserted with a first roll 52 having a plurality of cut projections 51, 51... Arranged at intervals on the surface, and the cut projections 51, 51. Are inserted between the second roll 54 having the recessed portions 53, 53... (See FIG. 9), and the cut convex portions 51, 51,. The elastic members 4, 4... Are cut and holes are formed in the backsheet 2.
[0036]
In the present embodiment, in order to perform the cutting of the elastic elastic members 4, 4... And the formation of the holes X, X. Only the projecting surface 55 provided in a part of the circumferential direction is configured to come into contact with the outer peripheral surface of the second roll 54, and only the projecting surfaces 55 are formed with cutting projections 51, 51,. Yes. Accordingly, as shown in FIG. 8 (a), when the projecting surface 55 does not face the second roll 54, the first and second rolls 52, 54 are separated from each other, and the elastic elastic members 4, 4,. .. And the formation of the holes X, X... Are not performed, but the position where the projecting surface 55 faces the second roll 54 as shown in FIG. , The projecting surface 55 of the first roll 52 comes into contact with the second roll 54, and at that time, as shown in FIG. 9, the cut projections 51, 51. 2 and elastic elastic members 4, 4,... Are cut and holes X, X,. At this time, if the concave base end portion 56 of the second roll 54 is formed in a tapered shape whose diameter is increased toward the opening side as shown in the drawing, there is an advantage that a hole is more reliably and neatly formed. .
[0037]
Further, the cutting projections 51, 51,... Can be arranged in a matrix, but in order to cut the elastic elastic members 4, 4,... More reliably, as shown in FIG. It is preferable to arrange in the order. In this case, the axial and circumferential pitches P1, P2 of the first roll 52 are made equal to the desired hole pitch. It should be noted that the number of cut projections 51, 51,... In a row is suitably set by the number of elastic elastic members 4, 4,. Moreover, the number of the cutting | disconnection convex parts 51 and the roll axial direction row | line | column can be suitably set according to the length of the adhesive non-application part 23. FIG. In particular, the cutting projections 51, 51,... Are arranged so that the cutting projections 51, 51,... In the circumferential front and rear rows overlap the gaps between the cutting projections 51, 51,. Are preferably determined, and in that case, the elastic stretchable members 4, 4..
[0038]
FIG. 11 shows a more detailed cutting mode when the above-described staggered arrangement is adopted.
[0039]
In the figure, it is assumed that the back seat 2 is traveling downward. Reference numeral 22 is an adhesive application portion, and 23 is an adhesive non-application portion. The elastic elastic member 4 on the left side is cut by the nearest seal part 61 (corresponding to the cutting convex part 51), and its end part 4a is released from the tension state and is bonded and fixed to the sheet. Shrinks toward 4. If the remaining elastic elastic member 4 is captured by the downstream seal portion 63 (corresponding to the rear cut convex portion 51) before the cutting by the upstream cut convex portion 51 is completed, both cut convex portions The elastic elastic member 4 between 51 and 51 contracts toward the seal portion 63 when cut by the upstream cut projection 51. If the cutting by the upstream cutting convex portion 51 is completed before the remaining elastic member 4 is captured by the downstream cutting convex portion 51, it exists in the adhesive application portion 22 on the further downstream side. It will shrink toward the elastic elastic member (not shown). Further, the elastic elastic member 4 on the right side is also cut at the closest seal portion 62, and the end portion 4a contracts.
[0040]
In the back sheet 2 thus formed, not only the elastic elastic member 4 is surely cut by inserting the cutting projection 51, but also the air permeability is good by forming a through hole or a hollow. .
[0041]
In the above cutting method, the following modifications (a) to (h) are possible.
[0042]
(A) At least one of the first and second rolls 52 and 54 may be provided with a heating means so that the elastic elastic member 4 is melted and the upper and lower sheets 41 and 21 are sealed. Specifically, rod-like sheathed heaters may be provided in the vicinity of these rolls 52 and 54, or other heating means such as high-frequency heating means, far-infrared heaters, and oil heaters may be used in combination. In the above-described embodiment, since the cutting projections 51 such as pins and blades are used, the elastic elastic member 4 can be cut only by light pressure. In that case, the upper and lower sheets 41, A flexible backsheet 2 without heat seal 21 can be manufactured.
[0043]
Moreover, in FIG. 7, the structure where the position of the 1st roll 52 and the 2nd roll 54 is reverse is also employable.
[0044]
(B) As the lower sheet 21 and the upper sheet 41, a nonwoven fabric, a plastic film, a knitted fabric, a woven fabric, paper, or the like can be used. As the material, a known material such as polypropylene, polyethylene, polyester, cellulose, rayon or the like can be appropriately used alone or in admixture of two or more.
[0045]
(C) Each of the sheets 41 and 21 may be a multilayer sheet in which several sheets are already laminated.
[0046]
(D) As the elastic stretchable member 4, a material that can be cut (for example, thermoplastic polyurethane, various elastomers, rubbers, etc.), for example, a thread, a band, or a net can be used. In the above-described embodiment, a plurality of elastic elastic members 4 are attached in parallel, but it is also possible to attach only one.
[0047]
(E) Although FIG. 7 shows an example in which the elastic elastic member 4 is bonded to the center in the width direction of the sheets 41 and 21, a configuration in which the elastic elastic members 4 are bonded in the vicinity of the ends of the sheets 41 and 21 may be used. What is necessary is just to change the arrangement | positioning part of an embossing pattern according to the attachment position of the elastic elastic member 4. FIG.
[0048]
(F) The adhesive can be applied to either one or both of the upper and lower sheets 41 and 21. Further, an adhesive can be applied to the elastic elastic member 4. Further, the adhesive can be applied to the sheet or the like discontinuously or continuously along the longitudinal direction, or entirely except for a part, all or part thereof.
[0049]
(G) As shown in FIGS. 12A to 12D, the cutting site may be the adhesive application part Y or the adhesive non-application part Z.
[0050]
(H) In the above embodiment, the elastic stretchable member 4 is sandwiched between the pair of upper and lower sheets 41 and 21. However, as shown in FIGS. An elastic elastic member may be arranged and fixed on the multilayer sheet.
[0051]
Next, a method for manufacturing a disposable diaper using the back sheet 2 will be described in detail.
[0052]
FIG. 13 shows an assembly flow of the disposable diaper, which includes an absorbent main body production / supply line 100, a backsheet production / supply line 200, and a final processing line 300.
[0053]
In the absorbent main body production supply line 100, first, the absorbent body 3 is supplied so that the longitudinal direction thereof is along the conveying direction, and the top sheet 1 is covered and fixed thereon, and further, both side ends of the top sheet 1 are provided. The standing cuffs D are arranged and fixed to the portions. Subsequently, these are arranged and fixed on the waterproof film 5 supplied separately, and the absorbent main body C is completed. In the case of the present embodiment, the waterproof film 5 is processed in advance so that both side end portions are folded and bonded with a reinforcing material such as a colored urethane film between them to strengthen the edge. The Note that the side edge portion may be emphasized by color hot melt bonding without using a reinforcing material, or the stiffness may be strengthened.
[0054]
The absorbent main body C thus manufactured is turned 90 degrees in a plane so that its longitudinal direction is perpendicular to the conveying direction in the 90-degree turn device 110, and the backsheet attaching device 310 of the final processing line 300. It is conveyed to.
[0055]
On the other hand, in the backsheet manufacturing and supply line 200, the backsheet 2 formed by sandwiching one or more elastic elastic members 4 in an expanded state between the upper and lower sheets 41 and 21 by the above-described manufacturing method is provided on the surface. A second roll 54 having a first roll 52 in which a plurality of cutting convex portions 51, 51,... Are arranged at intervals, and concave portions 53, 53,. Are inserted into the portion corresponding to the absorbent body 3 in the backsheet 2 at that time, and the elastic protrusions 4 of the portion are cut and the holes are formed in the portion. Form. Thus, the continuous elastic sheet 201 in which the elastic elastic member 4 in the portion corresponding to the absorbent body 3 is discontinuous is provided for each of the surplus part and the lower back part of the front body and the surplus part and the lower back part of the back body. Manufactured. In addition, for the production of these stretchable sheets, individual lines may be provided, or one line produced may be divided into two in the longitudinal direction.
[0056]
The continuous stretchable sheets 201 for the front body and the back body manufactured as described above are sequentially fed into the die cutter device 320, where the portions corresponding to the leg opening are cut out, and then the final processing line 300 It is sent to the back seat attachment device 310. Here, the absorbent main body C that is sent separately is arranged on the portion corresponding to the center part in the product width direction of the backsheet 2 and fixed by hot melt bonding or the like.
[0057]
After that, after the mechanical tape 9 is attached to both side edges of the waist parts A and A by the heat seal device 330, the surplus portion left for conveyance in the final cutter 340 is cut off, and the waist part opening edge Corresponding portions are formed, and successive products are cut along the corresponding portions between the side edges and cut to fit the product dimensions into individual paper diapers. These individual paper diapers are sequentially fed to a counting device (not shown) after pictures and patterns are transferred onto the surface of the back sheet 2 by the transfer roll 350 as necessary.
【The invention's effect】
[0058]
According to the invention of claim 1, a liquid-permeable top sheet located on the wearer side, a liquid-impermeable back sheet located on the anti-wearer side, and a waistline portion and legs between these two sheets In a paper diaper provided with an absorber interposed in the central part of the rotating part, a number of elastic elastic members for the waistline extending in the width direction are disposed in the waistline part, and the back sheet The region corresponding to the absorber In , Many through holes , Or from the top sheet side Above Numerous hollows protruding toward the back seat Of the waist elastic elastic members arranged corresponding to the absorber at positions corresponding to the numerous through holes or the numerous recessed holes. By simply cutting, the absorber does not shrink and the absorbability is not lost, and there is an effect that it is possible to obtain a paper diaper that is low in cost and does not have to worry about liquid leakage. Moreover, there is an effect that the air permeability is improved by forming the through hole or the recessed hole.
[0059]
According to a second aspect of the present invention, in the disposable diaper according to the first aspect, an inner end portion of the elastic member for waistline that is disposed corresponding to the absorber is disposed outside an outer edge of the absorber. If it is positioned on the side, the elastic elastic member for waistline and the absorbent body will not overlap, so that the absorbent body will not shrink and the absorbent property will not be lost, and a paper diaper that is low in cost and does not cause liquid leakage is obtained. be able to. In addition, the elastic elastic member can be arranged as wide as possible in the width direction within a range that does not impair the absorbability of the absorber. Therefore, the fit to the wearer is further improved.
[0060]
According to a third aspect of the present invention, in the disposable diaper according to the first aspect, an inner end portion of the elastic elastic member for waistline that is disposed corresponding to the absorber is located inside an outer edge of the absorber. If it is positioned on the side, the area where the elastic elastic member for the waistline and the absorbent body overlap is reduced as much as possible, so the absorbent body will not shrink and impair the absorbability, and the liquid may be leaked at low cost. You can get a disposable diaper. In addition, the elastic elastic member can be arranged as wide as possible in the width direction within a range that does not impair the absorbability of the absorber. Therefore, the fit to the wearer is further improved.
[0061]
As in the invention of claim 4, in the paper diaper according to any one of claims 1, 2, and 3, a mechanical tape for joining the waistline portions to the inside of both ends in the width direction of the waistline portion Since the waistline is joined by the mechanical tape attached to the stretchable portion in the width direction, the fit of the waistline part is improved.
[0062]
In the paper diaper according to any one of claims 1, 2, 3, and 4 as in the invention of claim 5, both ends of the preliminarily waterproof film are arranged in fixing the absorbent body on the waterproof film. When processing is performed so that the stiffness of the side edge portion of the absorber is increased by folding back the portion, the stiffness of the side edge portion of the absorber becomes stronger.
[Brief description of the drawings]
FIG. 1 is a developed plan view of a disposable diaper according to a first reference example of the present invention.
FIG. 2 is an enlarged cross-sectional view of a main part of a paper diaper according to a first reference example of the present invention.
FIG. 3 is a developed plan view of a disposable diaper according to a second reference example of the present invention.
FIG. 4 is a developed plan view of a disposable diaper according to a third reference example of the present invention.
FIG. 5 is a developed state plan view showing half of the disposable diaper according to the first embodiment of the present invention.
FIG. 6 is an enlarged cross-sectional view of a main part of the disposable diaper according to the first embodiment of the present invention.
FIG. 7 is a perspective view showing a manufacturing apparatus for manufacturing a back sheet in the paper diaper according to the first embodiment of the present invention.
8A and 8B are explanatory diagrams for explaining operation modes of the first and second rolls in the manufacturing apparatus of FIG. 7, in which FIG. 8A shows a non-cut state, and FIG. 8B shows a cut state.
FIG. 9 is an explanatory diagram for explaining a state at the time of cutting in the manufacturing apparatus of FIG. 7;
10 is a plan view showing an example of the arrangement of cutting projections in the first roll of the manufacturing apparatus of FIG. 7; FIG.
11 is an enlarged plan view showing a cutting mode in the manufacturing apparatus of FIG. 7; FIG.
FIG. 12 is an explanatory view showing various laminated structures of stretchable sheets.
FIG. 13 is a flowchart of the production line for the disposable diaper according to the first embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 is a top sheet, 2 is a back sheet, 3 is an absorber, 4 is a waist elastic elastic member, 9 is a mechanical tape, 10 is a leg elastic elastic member, 51 is a cutting convex part, 52 is a 1st roll, 53 is a recess, 54 is a second roll, A is a waistline part, B is a leg part, C is an absorbent main body, D is a standing cuff, and X is a hole.

Claims (5)

A liquid-permeable top sheet located on the wearer side, a liquid-impermeable back sheet located on the anti-wearer side, and interposed between these two sheets and in the middle of the waistline and leg circumferences. and a paper diaper which includes an absorbent body, the waist portion is configured to provided a plurality of waist elastic stretchable members extending in the width direction, in a region corresponding to the absorbent body of the backsheet, a number of through holes, or a large number of hollows projecting toward the backsheet side from the top sheet side is formed, the waist elastic stretchable those arranged corresponding to the absorbent body of the member, the number of A disposable diaper, characterized in that it is cut at a position corresponding to a through hole or a number of recessed holes .   The disposable diaper according to claim 1, wherein an inner end portion of the elastic elastic member for waistline disposed corresponding to the absorber is positioned outward from an outer edge of the absorber.   The disposable diaper according to claim 1, wherein an inner end portion of the elastic elastic member for waistline that is disposed corresponding to the absorber is positioned inward from an outer edge of the absorber.   The paper diaper according to any one of claims 1, 2, and 3, wherein a mechanical tape for joining the waistline portions is attached to the inside of both ends in the width direction of the waistline portion.   In arranging and fixing the absorbent body on the waterproof film, the both sides of the waterproof film are folded in advance so that the stiffness of the side edge of the absorbent body is increased. The disposable diaper according to any one of 2, 3, and 4.

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