JP2014168591A - Tape type disposable diaper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a tape type disposable diaper having excellent fitness, wearing texture, and leakage prevention property.SOLUTION: A tape type disposable diaper 100 includes: an absorbent body 14 that consists of a front piece 2, a crotch part 4 and a back piece 6 and in which a plurality of sheets 18 and 20 are superposed, with an absorber 22 clamped therebetween; fastening tapes 10 that are disposed extending from respective left/right side edges 6a and 6b of the back piece 6 of the absorbent body 14; and a front patch 30 that is disposed on the front piece 2 of the absorbent body 14 for fitting the fastening tapes 10. The front patch 30 includes an upper notch part 31 formed by notching an upper edge side 301, which is located at an end edge side of the front piece 2, in such a manner as being recessed inward at the front patch 30. A stretchable part 35 is provided at an area where the upper notch part 31 of the absorbent body 14 is formed.

Description

  The present invention relates to a tape-type disposable diaper.

  Conventionally, a tape-type disposable diaper in which a fastening tape is attached to the back body and a front patch is provided on the front body is known. The fastening tape and the front patch can be mechanically coupled by, for example, a hook fastener (male member) and a loop fastener (female member). Therefore, the tape-type disposable diaper can be attached to the wearer's body by fastening the fastening tape provided on the back body to the front patch provided on the front body.

  The following patent documents 1-3 can be mentioned as a prior art of such a tape-type disposable diaper, for example.

  In Patent Document 1, a waist elastic member is disposed across the width direction at the waist opening edge portion in the back side portion where the fastening tape having the fastening portion is provided, and the waist portion in the back side portion A tape-type disposable diaper is disclosed in which a plurality of waistline elastic members are arranged in the width direction. And this patent document 1 also describes disposing an elastic member in an expanded state on the upper side of the front patch, that is, on the abdomen end. Patent Document 2 discloses a tape-type disposable diaper in which an elongated elastic member is disposed in an extended state on a main body portion of a fastening tape. Patent Document 3 discloses a tape-type disposable diaper in which a central notch portion that is recessed toward the inner side of the front patch is formed on the upper edge side of the front patch.

JP 2002-224160 A JP 2009-201849 A Japanese Patent No. 5011457

  In the tape-type disposable diaper described in Patent Document 1, since the abdomen can be tightened by the elastic member disposed at the abdomen side end, the leakage prevention can be improved. However, when the tape-type disposable diaper is worn, the fastening tape is fastened to the front patch located below the elastic member arranged at the abdominal end, so that it fits with the fastening tape. There was a problem that it was not possible to obtain sufficient fit. In addition, in the tape-type disposable diaper described in Patent Document 2, the fit property is improved by the expansion and contraction of the fastening tape (fastening tape), but due to the influence of the front patch, the abdomen feels less wearing and contributes to leakage prevention. There was a problem.

  In addition, the material composition of the front patch of the tape-type disposable diaper is film and non-woven fabric, and since such material is hard and has a waist, it fits and wears around the wearer's belly (ie around the front patch) There was also a problem that was not good. Further, there is a problem that the periphery of the front patch, particularly the abdominal boundary portion where the absorbent body is not disposed, is easily affected by the displacement of the fastening tape and easily leads to leakage. In addition, even if an elastic material is placed on the back side of the front patch to improve the fit, the front patch has a waist, so the stretch force cannot be effectively exerted, and it is difficult to improve the fit. It is. Furthermore, even if the expansion / contraction force of the elastic material disposed on the back side of the front patch is increased, the front patch contracts, and it is difficult to attach the fastening tape, and the usability deteriorates. In the tape-type disposable diaper described in Patent Document 3, it is possible to prevent the wearer's abdomen or the base of both legs from hitting the front patch, and to improve the wearing feeling. Development of a tape-type disposable diaper with improved properties has been desired. In particular, in the tape-type disposable diaper described in Patent Document 3, regarding the portion of the front patch in the abdominal width direction (that is, the cutout portion), further improvement in fit, wearing feeling, and leakage prevention is desired. It was.

  The present invention has been made in view of the problems of the prior art as described above. That is, this invention provides the tape-type disposable diaper excellent in fitting property, a feeling of mounting | wearing, and leak-proof property.

  According to the present invention, the following tape-type disposable diaper is provided.

[1] An absorbent main body composed of a front body, a crotch part, and a rear body, and a plurality of sheets stacked in a state of sandwiching an absorbent body, and left and right side edges of the rear body of the absorbent main body A fastening tape disposed to extend, and a front patch disposed on the front body of the absorbent main body for attaching the fastening tape, the front patch comprising the front body An upper notch portion is formed such that an upper edge side located on the end edge side is notched so as to be recessed toward the inner side of the front patch, and the upper notch portion of the absorbent main body is formed. A tape-type disposable diaper in which a stretchable portion is provided in the region where the area is formed.

[2] The expansion / contraction portion is provided across a boundary portion connecting each upper end portion of the upper edge forming the upper notch portion from the region where the upper notch portion is formed, [1] ] The tape-type disposable diaper described in].

[3] The tape-type disposable diaper according to [1] or [2], wherein the stretchable portion is provided so as not to overlap an area where the front patch is disposed.

[4] The tape-type disposable diaper according to any one of [1] to [3], wherein the stretchable portion is provided so as not to overlap an area of the absorbent main body where the absorber is disposed. .

[5] In the front patch, a plurality of strip-shaped adhesive portions and strip-shaped non-adhesive portions are alternately arranged in the width direction of the absorbent main body, and are bonded and fixed to the front body by the strip-shaped adhesive portions. The tape-type disposable diaper according to any one of the above [1] to [4].

[6] The width of the absorbent main body in the width direction of the band-shaped adhesive portion for bonding and fixing the front patch is 1 to 70 mm, and the width direction of the absorbent main body in the band-shaped non-adhesive portion The tape-type disposable diaper according to the above [5], wherein the length is 1 to 70 mm.

[7] The [1] to [6], wherein the shortest distance from the concave top portion of the upper notch portion to the boundary portion connecting the left and right upper end portions of the upper edge is 5 mm or more and 80 mm or less. The tape-type disposable diaper according to any one of the above.

[8] The [1] to [7], wherein the upper edge of the front patch includes a curve that connects at least one of the concave top of the upper notch and the upper left and right ends of the upper edge. ] The tape-type disposable diaper in any one of.

[9] The front patch includes a lower left cutout portion in which a lower left corner of the front patch is cut out on a lower edge side facing the upper edge, and a lower right cutout in which a lower right corner of the front patch is cut out. The tape-type disposable diaper according to any one of the above [1] to [8], wherein a portion is formed.

[10] In the above [9], the lower edge of the front patch includes a curve connecting the concave top of the lower left notch, the lower end of the front patch, and the concave top of the lower right notch. The tape-type disposable diaper described.

[11] The tape-type disposable diaper according to [9] or [10], wherein the shape of the upper edge of the front patch and the shape of the lower edge of the front patch are the same shape.

[12] The front patch has two side edges extending from left and right ends of the upper edge, and left and right upper ends of the upper edge are located on the front edge more than the left and right ends of the upper edge. [1] to [11], wherein the angle formed between the side edge and the tangent line of the upper edge at the intersection of the side edge and the upper edge is an obtuse angle, located near the center region side of the patch. The tape-type disposable diaper according to any one of the above.

[13] The front patch has two side edges extending from left and right ends of the upper edge, and left and right upper ends of the upper edge coincide with left and right ends of the upper edge. The tape-type disposable diaper according to any one of [1] to [11], wherein an angle formed by a tangent line of the upper edge at the intersection of the side edge and the upper edge and the side edge is an acute angle. .

  In the tape-type disposable diaper of the present invention, the fit, wearing feeling, and leakproofness are improved by adopting the following configuration. In other words, the front patch has an upper cutout portion in which the upper edge side located on the edge side of the front body is cut out so as to be recessed toward the inner side of the front patch, and the absorbent main body is formed. The expansion / contraction part is provided in the area | region in which the upper notch part was formed. Therefore, the expansion / contraction part exists on the same circumference of the fastening tape, and the fit is improved. Moreover, since an expansion-contraction part exists in the part to which the pressure of a wearer's abdomen is applied, a wearing feeling improves. Furthermore, in the conventional tape-type disposable diaper, the abdomen, particularly the boundary portion of the front patch, is likely to have a gap, but by providing a stretchable part in the region where the upper notch is formed, The boundary part can be firmly held, and the leak-proof property is improved.

It is a top view showing typically Embodiment 1 of a tape type disposable diaper of the present invention, and is a figure showing the state where a tape type disposable diaper was developed and seen from the back sheet side. It is a partially cutaway sectional view showing Embodiment 1 of a tape type disposable diaper of the present invention, and is a figure showing the state where a tape type disposable diaper was developed and seen from the top sheet side. It is an expansion schematic diagram which shows typically the part by which the front patch of Embodiment 1 of the tape type disposable diaper of this invention was arrange | positioned. FIG. 4 is a plan view schematically showing the front patch shown in FIG. 3. It is an expansion schematic diagram which shows typically the part by which the front patch of Embodiment 2 of the tape type disposable diaper of this invention was arrange | positioned. It is an expansion schematic diagram which shows typically the part by which the front patch of Embodiment 3 of the tape type disposable diaper of this invention was arrange | positioned. It is an expansion schematic diagram which shows typically the part by which the front patch of Embodiment 4 of the tape type disposable diaper of this invention was arrange | positioned. It is an expansion schematic diagram which shows typically the part by which the front patch of Embodiment 5 of the tape type disposable diaper of this invention was arrange | positioned. It is an expansion schematic diagram which shows typically the part by which the front patch of Embodiment 6 of the tape type disposable diaper of this invention was arrange | positioned. It is an expansion schematic diagram which shows typically the part by which the front patch of Embodiment 7 of the tape type disposable diaper of this invention was arrange | positioned. It is an expansion schematic diagram which shows typically the part by which the front patch of Embodiment 8 of the tape type disposable diaper of this invention was arrange | positioned. It is a schematic diagram for demonstrating the outline | summary of the manufacturing process of a front patch.

  Hereinafter, the form for implementing the tape type disposable diaper of this invention is demonstrated concretely.

[Embodiment 1]
Hereinafter, Embodiment 1 of the tape type disposable diaper of this invention is demonstrated using drawing. As shown in FIGS. 1, 2, and 3, the tape-type disposable diaper 100 according to Embodiment 1 includes an absorbent main body 14, a fastening tape 10, and a front patch 30. The absorptive main body 14 is composed of a front body 2, a crotch part 4, and a back body 6, and a plurality of sheets (for example, a top sheet 18 and a back sheet 20) are laminated with an absorbent body 22 sandwiched therebetween. is there. The fastening tape 10 is disposed so as to extend from the left and right side edges 6 a and 6 b of the back body 6 of the absorbent main body 14. The front patch 30 is for attaching the fastening tape 10 and is disposed on the skin non-contact surface side of the front body 2 of the absorbent main body 14.

  The front patch 30 of the tape-type disposable diaper 100 according to the first embodiment has an upper cutout in which the upper edge 301 side located on the edge side of the front body 2 is cut away so as to be recessed toward the inner side of the front patch 30. The part 31 is formed. Furthermore, the expansion / contraction part 35 is provided in the area | region in which the upper notch part 31 of the absorptive main body 14 was formed.

  The tape-type disposable diaper 100 configured in this way improves fit, wearing feeling, and leakproofness. That is, since the stretchable portion 35 is provided in the region where the upper cutout portion 31 is formed, the stretchable portion 35 exists on the same circumference of the fastening tape 10 when the tape-type disposable diaper 100 is mounted. And the fit is improved. Moreover, the upper notch part 31 was formed in the part to which the pressure of the wearer's abdomen is applied (for example, the part to which pressure is applied when changing the posture from the supine position to the sitting position), and the upper notch part 31 was formed. Since the stretchable portion 35 is provided in the region, the feeling of wearing is improved. Furthermore, in the conventional tape-type disposable diaper, a gap is easily formed in the abdomen, particularly the boundary part of the front patch, but by providing the stretchable part 35 in the region where the upper notch 31 is formed, The boundary portion of the front patch 30 can be firmly pressed, and the leak-proof property is improved.

  Here, FIG. 1 is a plan view schematically showing Embodiment 1 of the tape-type disposable diaper of the present invention, and shows a state where the tape-type disposable diaper is developed and viewed from the back sheet side. FIG. 2 is a partially cutaway cross-sectional view showing an embodiment of the tape-type disposable diaper of the present invention, and shows a state where the tape-type disposable diaper is developed and viewed from the top sheet side. FIG. 3 is an enlarged schematic view schematically showing a portion where the front patch of one embodiment of the tape-type disposable diaper of the present invention is disposed. FIG. 3 shows a state in which the fastening tape 10 disposed so as to extend from the side edges 6 a and 6 b of the back body 6 is attached to the right side portion of the front patch 30.

  In the present specification, the “tape-type disposable diaper” means a disposable comprising the absorbent main body 14, the fastening tape 10, and the front patch 30, like the tape-type disposable diaper 100 shown in FIG. It shall mean a diaper. In the tape-type disposable diaper 100, the fastening tape 10 attached to the back body 6 is attached to the front body 2 with the back body 6 applied to the back of the wearer and the front body 2 applied to the abdomen of the wearer. By fastening to the provided front patch 30, it is possible to attach to the wearer. In the present specification, the `` front body '' means a part covering the abdomen of the wearer when wearing the diaper, and means a part covering the back of the wearer with the `` back body '' when wearing the diaper, “Inseam” means a portion located between the front body and the back body. Further, in the present specification, the “left-right direction” means the width direction of the developed tape-type disposable diaper shown in FIG. That is, the “left-right direction” means the left-right direction in FIG. The term “vertical direction” means the longitudinal direction of the unfolded tape-type disposable diaper shown in FIG. 1 (the direction from the edge of the front body toward the edge of the back body). That is, the term “vertical direction” means the vertical direction in FIG. The “left-right direction” and “up-down direction” are directions orthogonal to each other.

(1. Configuration of each part of a tape-type disposable diaper)
Hereinafter, the structure of each part of a tape-type disposable diaper is demonstrated.

(1-1. Stretchable part)
The stretchable part 35 provided in the region where the upper notch 31 of the absorbent main body 14 is formed is formed by the stretchable material 36 disposed on the absorbent main body 14 in the stretched state. Examples of the elastic material 36 in the tape-type disposable diaper 100 of Embodiment 1 include thread rubber and flat rubber made of an elastic material such as natural rubber and synthetic rubber (urethane rubber, olefin rubber, etc.). The elastic material 36 is disposed in an expanded state in a direction from one side edge 2a of the front body 2 to the other side edge 2b. 1-3, the example in the case of arrange | positioning the three expansion-contraction materials 36 so that each may become parallel linearly is shown. There is no particular limitation on the number of the elastic members 36. The elastic material 36 may be determined in consideration of the degree of expansion / contraction of the expansion / contraction part 35, etc., and the constituent material, the expansion rate of the material, the expansion state at the time of fixation, and the like may be determined. When the elastic material 36 is a rubber thread, the thickness is preferably 100 to 2000 dtex, and more preferably 400 to 1400 dtex. The stretchable material 36 is preferably fixed in an expanded state in order to exert a sufficient stretch force. For example, the stretch material 36 is preferably fixed in a stretched state of 100 to 300%, and more preferably fixed in a stretched state of 150 to 270%. By fixing in the extended state in such a range, a sufficient stretching force can be applied.

  The stretchable portion 35 is preferably provided across the boundary portion X connecting the upper end portions 302 of the upper edge 301 forming the upper notch portion 31 from the region where the upper notch portion 31 is formed. By providing the stretchable part 35 across the boundary part X, the fit around the abdomen is further improved. Moreover, since the boundary part X can be reliably pressed down by the expansion-contraction part 35, leak-proof property is further improved. The boundary portion X is a region including a straight line drawn when connecting the upper end portions 302 of the upper edge 301 forming the upper cutout portion 31. For example, when assuming a rectangular front patch in which the upper notch 31 is not formed in the front patch 30, the boundary portion X corresponds to a boundary portion of the upper edge of the front patch.

  The stretchable part 35 is preferably provided so as not to overlap the area where the front patch 30 is disposed. By configuring in this way, unnecessary stretching force does not act on the front patch 30, and the contraction of the front patch can be effectively suppressed. Therefore, it becomes easy to attach the fastening tape 10 to the front patch 30. Moreover, since a stretching force can be favorably expressed with respect to the area | region in which the upper notch part 31 was formed, more favorable fitting property can be obtained. There is no particular limitation on the method of providing the stretchable portion 35 so as not to overlap the area where the front patch 30 is disposed. For example, the elastic member 36 may be disposed only in the region where the upper notch 31 is formed, avoiding the region where the front patch 30 is disposed. In addition, the stretchable material 36 may be cut at a portion overlapping the region where the front patch 30 is disposed so that the stretchable force of the stretchable material 36 does not appear.

  The stretchable portion 35 is preferably provided so as not to overlap the region where the absorbent body 22 of the absorbent main body 14 is disposed. By comprising in this way, an unnecessary expansion-contraction force does not act with respect to the absorber 22, and shrinkage | contraction etc. of the absorber 22 can be suppressed effectively. For this reason, the fitting property and wearing feeling of the tape-type disposable diaper 100 are further improved. There is no particular limitation on the method of providing the stretchable portion 35 so as not to overlap the region where the absorber 22 is disposed. For example, the stretchable material 36 may be disposed avoiding the region where the absorber 22 is disposed, or the stretchable material 36 is cut and stretched for a portion overlapping the region where the absorber 22 is disposed. The expansion / contraction force of the material 36 may not be expressed.

  The elastic material 36 is fixed to the region where the upper cutout portion 31 is formed by an adhesive or other means, for example. The fixing method may be, for example, adhesion using a hot melt adhesive or other highly fluid adhesive, or may be welding by heat, ultrasonic waves, or the like such as heat sealing. In addition, about the fixing method of the expansion-contraction material 36, it is not limited to the method mentioned above.

(1-2. Front patch)
The front patch 30 is a member for securing the fastening tape 10 provided on the back body 6 to the front body 2 and maintaining it. The front patch 30 is attached to the outer surface (skin non-contact surface side) of the front body 2 and constitutes a fastening mechanism together with the fastening tape 10 described above. For example, when an adhesive tape is employed as the fastening means 44 of the fastening tape 10, the front patch 30 may be formed of a plastic film having a smooth surface. On the other hand, when a hook material of a planar fastener is adopted as the fastening means 44 of the fastening tape 10, a loop material of a planar fastener may be adopted as the front patch 30.

  As described above, the front patch 30 has an upper cutout portion 31 that is cut out so that the upper edge 301 side located on the edge side of the front body 2 is recessed toward the inner side of the front patch 30. Is formed. Here, the front patch 30 includes a central region 30a (see FIG. 3), a left side region 30b (see FIG. 3) located on the left side of the central region 30a, and a right side located on the right side of the central region 30a. It is assumed that the area is divided into the area 30c (see FIG. 3). The division of these areas may be obtained by dividing the front patch 30 into the central area 30a, the left-side area 30b, and the right-side area 30c in three equal parts in the left-right direction, or the central area 30a and the left-side area 30b. And the right side region 30c may be divided at an arbitrary ratio such as 4: 3: 3 or 6: 2: 2. The concave top 311 of the upper notch 31 is preferably located in the central region 30a of the front patch. As described above, since the upper notch 31 is provided in the front patch 30, even when the wearer takes a forward leaning posture or a sitting posture, the abdomen hits the upper edge of the front patch 30. Can be prevented. Therefore, a feeling of wear can be improved compared with the conventional tape type disposable diaper. In addition, the concave top part 311 means the most concave part of the formed notch. In FIG. 1 to FIG. 3, the most concave portion (that is, the concave top portion 311) of the upper cutout portion 31 is one point, and the depth of the cutout gradually decreases in the left-right direction from the most concave portion. However, the concave apex 311 may have a predetermined width in the left-right direction. For example, the concave top 311 may be formed in a straight line. Further, the concave apex portion 311 may be located at a position that is shifted from the center of the upper edge 301 by a predetermined distance in the left-right direction.

  The shortest distance from the concave top 311 of the upper notch 31 to the boundary X connecting the left and right upper ends 302 of the upper edge 301 is preferably 5 mm or more and 80 mm or less. This “shortest distance” is the recess width of the upper notch 31. The upper end portion 302 of the front patch 30 may be located in either the left side region or the right side region, and the upper end portion 302 of the front patch 30 is substantially the left side region or the right side region. It may be formed in both. Further, the upper end portion 302 disposed in the left side region and the upper end portion 302 disposed in the right side region may have different arrangement positions in the vertical direction.

  By setting the “shortest distance” of the upper notch 31 to 5 mm or more as in the above configuration, the abdomen is compressed by the front patch 30 even when the tape-type disposable diaper 100 is bent forward. It becomes hard to be done and a feeling of wearing improves. If the “shortest distance” of the upper notch 31 is 80 mm or less, the function of the front patch 30 for fixing the fastening tape 10 provided on the back body 6 to the front body 2 is not impaired.

  The upper edge 301 of the front patch 30 may include a curve connecting at least one of the concave top 311 of the upper notch 31 and the upper left and right upper ends 302 of the upper edge 301. As described above, the upper notch 31 can be formed in accordance with the shape of the wearer's abdomen by connecting the concave top 311 of the upper notch 31 and the upper end 302 of the front patch 30 with a curve. . Therefore, the wearing feeling of the tape-type disposable diaper can be further improved. The curve may be a gentle S-shaped curve or a gentle arc-shaped curve. In FIG. 1 and FIG. 3, in order to explain the shape of the front patch, some elements are shown with black circles, but these black circles do not exist. Moreover, although the dotted line is shown and attached to the boundary part X which connects each upper end part 302 of the upper edge 301, this broken line is a virtual line which does not exist.

  The front patch 30 has a lower left cutout portion 32 in which the lower left corner of the front patch 30 is cut out and a lower right cutout portion in which the lower right corner of the front patch 30 is cut out on the lower edge 302 side facing the upper edge 301. 33 may be formed. As in the above configuration, by forming the notches (the lower left notch 32 and the lower right notch 33) at the left and right corners of the lower edge 303 of the front patch 30, the wearer can Even in the case of taking the sitting posture, it is possible to secure a sufficient range of motion at the bases (hip joint periphery) of both legs. Thereby, the wearing feeling of the tape-type disposable diaper 100 can be further improved. As described above, the front patch 30 includes a curved or refracted upper edge 301, a curved or refracted lower edge 303 facing the upper edge 301, and a left edge that connects the left edge of the upper edge 301 and the left edge of the lower edge 303. It is preferable that the basic configuration includes 305 and a right edge 306 that connects the right edge of the upper edge 301 and the right edge of the lower edge 303. In addition, the concave top part 321 of the lower left notch part 32 and the concave top part 331 of the lower right notch part 33 may have a height difference in the vertical direction.

  The lower edge 303 of the front patch may include a curve connecting the concave top 321 of the lower left notch 32, the lower end 304 of the front patch, and the concave top 321 of the lower right notch 33. By employ | adopting such a structure, the lower edge 303 of the front patch 30 can be curved according to the shape of the movable range of a wearer's both leg part. Therefore, the wearing feeling can be further improved.

  Between a straight line extending in the left-right direction from the lower end portion 304 of the front patch 30, a straight line extending in the left-right direction from the concave top portion 321 of the lower left notch portion 32, and a straight line extending in the left-right direction from the concave top portion 331 of the lower right notch portion 33. The shortest distance is preferably 5 mm or more and 80 mm or less. By comprising in this way, even if it is a case where it bends forward with the tape type disposable diaper attached, it is possible to prevent a situation where the base of the leg hits the corner part below the front patch 30, and the back body The function of the front patch 30 for fixing the fastening tape 10 provided on the front body 2 to the front body 2 is not impaired.

  The lower end portion 304 of the front patch 30 is preferably located at the center of the lower edge 303 of the front patch 30, but may be located at a position shifted by a predetermined distance in the left-right direction. The shape of the upper edge 301 of the front patch 30 and the shape of the lower edge 304 of the front patch 30 may be the same shape or different shapes. In the tape-type disposable diaper 100 shown in FIGS. 1 to 3, the shape of the upper edge 301 of the front patch 30 and the shape of the lower edge 304 of the front patch 30 are the same shape. The front patch 30 is formed by cutting at positions corresponding to the upper edge 301 and the lower edge 303 of the front patch 30 in the manufacturing process. For this reason, the front edge 30 can be cut with the same cutting blade by making the upper edge 301 and the lower edge 303 have the same curved shape. Accordingly, it is not necessary to separately provide cutting means (cutting blades) for cutting the upper edge 301 and the lower edge 303 of the front patch 30, and trim trimming means is not required, so that the cost to be invested in the manufacturing machine can be reduced. .

  The front patch 30 has two side edges (a left side edge 305 and a right side edge 306) extending from the left and right ends of the upper edge 301. Hereinafter, the left edge 305 and the right edge 30 may be collectively referred to as “side edges 305 and 306”. Here, the left and right upper ends 302, 302 of the upper edge 301 of the front patch 30 may be located closer to the central region 30a side of the front patch 30 than the left and right ends of the upper edge 301, respectively. The left and right upper ends 302, 302 of the upper edge 301 may coincide with the left and right ends of the upper edge 301. 1 to 3, the left and right upper ends 302, 302 of the upper edge 301 of the front patch 30 are located closer to the central region 30 a side of the front patch 30 than the left and right ends of the upper edge 301. Yes. The upper edge 301 between the left and right upper end portions 302 and 302 and the left and right ends of the upper edge 301 is formed in a straight line.

  For example, when the upper end 302 of the front patch 30 does not coincide with the intersection of the upper edge 301 and the side edges 305 and 306, the intersection of the upper edge 301 and the side edges 305 and 306 and the upper notch 31. The concave top 311 may be connected by a gentle S-shaped curve. Thus, the entire upper edge 301 of the front patch 30 can be configured with a gentle curve. Therefore, even if the wearer's abdomen is in contact with the upper edge 301 of the front patch 30, it is possible to prevent the wearer from having an unnecessary pressure. The difference in deviation between the intersections of the upper edge 302 of the front patch 30 and the upper edge 301 and the side edges 305 and 306 is, for example, 0.5 to 10 mm, 1 to 8 mm, 2 to 6 mm, or 3 to 4 mm. Can do.

  Here, when the left and right upper ends 302 of the upper edge 301 of the front patch 30 are located closer to the central region 30a side of the front patch 30 than the left and right ends of the upper edge 301, The angle formed by the tangent line of the upper edge 301 at the intersection of the edges 305 and 306 and the upper edge 301 and the side edges 305 and 306 may be an obtuse angle. When the angle formed by the tangent line of the upper edge 301 and the side edges 305 and 306 is an obtuse angle, the angle is preferably 95 to 135 °, and more preferably 100 to 130 °. It is especially preferable that it is 105-110 degrees.

  When the left and right upper end portions 302 and 302 of the upper edge 301 of the front patch 30 coincide with the left and right ends of the upper edge 301, the upper edge 301 at the intersection of the side edges 305 and 306 and the upper edge 301 is used. The angle formed by the tangent line and the side edges 305 and 306 may be an acute angle. When the angle formed by the tangent line of the upper edge 301 and the side edges 305 and 306 is an acute angle, the angle is preferably 45 to 85 °, and more preferably 50 to 80 °. 70 to 75 ° is particularly preferable.

  Although not shown, the front patch may be divided into a central area, a left side area, and a right side area. For example, the front patch may be formed by a first piece belonging to the central region, a second piece belonging to the left side region, and a third piece belonging to the right side region. In this way, when the front patch is manufactured by combining three pieces formed separately, the first piece belonging to the central region is attached to the lower part of the front body as compared with the second piece and the third piece. Thus, it becomes possible to easily manufacture a front patch in which an upper cutout portion, a lower left cutout portion, and a lower right cutout portion are formed.

  Next, the outline of the shape dimension of the front patch 30 will be described with reference to FIGS. Here, the example at the time of applying this invention to the tape-type disposable diaper for adults is demonstrated. However, the size of the shape of the front patch 30 is not limited to the following description, and can be applied to, for example, a disposable diaper for infants by changing as appropriate. FIG. 4 is a plan view schematically showing the front patch 30 shown in FIG.

  As shown in FIGS. 3 and 4, the length (line segment A) in the left-right direction of the front patch 30 is preferably 200 to 600 mm, and particularly preferably 280 to 500 mm. The length of the front patch 30 in the vertical direction, that is, the length in the vertical direction from the upper end portion 302 to the lower end portion 304 (line segment B) of the front patch 30 is preferably 100 to 200 mm, preferably 140 mm to More preferably, it is 180 mm. Here, the length (line segment B) in the vertical direction of the front patch 30 is preferably 20 to 60% of the length in the left-right direction (line segment A). % Length is particularly preferred.

  As shown in FIGS. 3 and 4, a distance (line segment C) between a straight line extending in the left-right direction from the upper end portion 302 of the front patch 30 and a straight line extending in the left-right direction from the concave top portion 311 of the upper notch 31. Is preferably 5 to 80 mm, 10 to 60 mm, or 15 to 50 mm, and particularly preferably 20 to 40 mm. The length (line segment D) of the left side edge 305 and the right side edge 306 of the front patch 30 is preferably 50 to 200 mm, and particularly preferably 120 to 160 mm. Note that the length of the left side edge 305 and the length of the right side edge 306 are preferably substantially the same, but may not be the same. Here, the vertical distance (line segment C) from the upper end 302 of the front patch 30 to the concave top 311 of the upper notch 31 is the length of the left edge 305 and right edge 306 of the front patch 30 (line segment). The distance is preferably 1 to 50% or 10 to 40% with respect to D), particularly preferably 20 to 30%.

  3 and 4, in the central region 30a, a distance between a straight line extending in the left-right direction from the concave top 311 of the upper notch 31 and a straight line extending in the left-right direction from the lower end portion 304 of the front patch 30. (Line segment E) is preferably 50 to 200 mm, particularly preferably 120 to 160 mm. In the left region 30b, a distance (line segment F) between a straight line extending in the left-right direction from the upper end portion 302 of the front patch 30 and a straight line extending in the left-right direction from the concave top portion 321 of the lower left notch 32 is 50. It is preferable that it is -200mm, and it is especially preferable that it is 120-160mm. Further, in the right side region 30c, a distance (line segment G) between a straight line extending in the left-right direction from the upper end portion 302 of the front patch 30 and a straight line extending in the left-right direction from the concave top 331 of the lower right notch 33 is It is preferable that it is 50-200 mm, and it is especially preferable that it is 120-160 mm. Here, the lengths of the line segment E, the line segment F, and the line segment G shown in FIG. 4 may be substantially the same or different. For example, the length of the line segment F or the line segment G may be 50 to 90% or 60 to 80% with respect to the length of the line E. . Further, the line segment E, the line segment F, and the line segment G may be substantially the same as or different from the lengths (the line segment D) of the left side edge 305 and the right side edge 306 of the front patch 30. It may be.

  Further, in the central region 30a, the concave top 311 of the upper notch 31 may be shifted from the center of the upper edge 301 of the front patch 30 by a predetermined distance in the left-right direction. That is, the distance (line segment H) between the straight line extending from the concave top 311 of the upper notch 31 in the vertical direction and the left side edge 305, the straight line extending from the concave top 311 of the upper notch 31 to the vertical direction, and the right side edge The distance between 306 (line segment I) may be different. For example, the line segment H may be a distance of 70 to 90% with respect to the line segment I. Similarly, in the central region 30a, the lower end portion 304 of the front patch 30 may be shifted from the center of the lower edge 303 of the front patch 30 by a predetermined distance in the left-right direction.

  As shown in FIGS. 3 and 4, a straight line extending in the left-right direction from the lower end portion 304 of the front patch 30 and a left-right direction from the concave top portion 321 of the lower left notch portion 32 (or the concave top portion 331 of the lower right notch portion 33). The distance between the straight lines extending in the direction (line segment J) is preferably 5 to 80 mm, 10 to 60 mm, or 15 to 50 mm, and particularly preferably 20 to 40 mm. Here, the vertical distance (line segment J) from the lower end portion 304 of the front patch 30 to the concave top portion 321 of the lower left cutout portion 32 (or the concave top portion 331 of the lower right cutout portion 33) The distance is preferably 1 to 50%, or 10 to 40%, and particularly preferably 20 to 30%, with respect to the length of the left side edge 305 and the right side edge 306 (line segment D).

  As shown in FIGS. 3 and 4, the distance between the line segment C and the line segment J is preferably substantially the same, but they may be different. In short, the line segment C is the recess width of the upper notch portion 31, and the line segment J is the recess width of the lower left notch portion 32 and the lower right notch portion 33. For example, the recess width of the upper notch 31 may be deeper than the recess width of the lower left notch 32 (or the lower right notch 33).

  3 and 4, the upper end portion 302 of the front patch 30 does not coincide with the intersection of the upper edge 301 and the side edges 305 and 306. The distance (line segment K) in the left-right direction from the upper end portion 302 of the front patch 30 to the intersection is preferably, for example, 5 to 50 mm, and particularly preferably 20 to 30 mm. 3 and 4, the concave crest 321 of the lower left notch 32 and the concave crest 331 of the lower right notch 33 do not coincide with the intersection of the lower edge 303 and the side edges 305 and 306. The distance (L) in the left-right direction from the concave crest 321 of the lower left notch 32 and the concave crest 331 of the lower right notch 33 to the intersection is preferably 5 to 50 mm, for example. It is particularly preferred. As described above, for example, the upper end 302 of the front patch 30 is configured not to coincide with the intersection of the upper edge 301 and the side edges 305 and 306 so that the angle of the corner of the front patch 30 is 90 degrees or more. Or since it can be made an obtuse angle, even if it is a case where a wearer's skin touches, a wearer will not feel discomfort.

  As shown in FIGS. 3 and 4, on the upper edge 301 side of the front patch 30, a straight line extending in the vertical direction from the concave top portion 311 of the upper cutout portion 31 and extending in the vertical direction from the upper end portion 302 of the front patch 30. The distance between the straight lines (line segment M) is preferably 50 to 250 mm, or 100 to 200 mm, and particularly preferably 130 to 170 mm. As shown in FIGS. 3 and 4, on the lower edge 303 side of the front patch 30, a straight line extending in the vertical direction from the lower end portion 304 of the front patch 30 and a concave top portion 321 (or right side of the lower left notch portion 32). The distance (line segment N) between the straight lines extending in the vertical direction from the concave top portion 331) of the lower notch 33 is preferably 50 to 250 mm, or 100 to 200 mm, and particularly preferably 130 to 170 mm. . The distance between the line segment M and the line segment N may be the same or different.

(1-3. Absorbent body)
The absorbent main body 14 includes a front body 2, a crotch part 4, and a back body 6, and a plurality of sheets are laminated in a state where an absorbent body 22 is sandwiched. The tape-type disposable diaper 100 of Embodiment 1 includes an absorbent main body 14 in which a top sheet 18 and a back sheet 20 are laminated with an absorbent body 22 sandwiched therebetween. Such an absorbent main body 14 is preferably provided with an absorbent body 22 for absorbing and holding a liquid such as urine from the back body 6 to the front body 2 with the crotch 4 as the center. The absorbent body 22 is covered with a liquid-permeable top sheet 18 from the surface (skin contact surface) side that contacts the wearer's skin, and the liquid-impermeable back sheet from the opposite skin non-contact surface side. 20 is covered. Therefore, liquid such as urine passes through the top sheet 18 and is absorbed and held by the absorber 22, and leakage to the outside is prevented by the liquid-permeable back sheet 20.

(1-4. Absorber)
The absorber 22 is a member for absorbing and holding the wearer's urine. The absorbent body 22 is made of an absorbent material in order to absorb and hold the wearer's urine and body fluid. As the absorbent material, for example, fluff pulp, super absorbent polymer (“SAP”), a hydrophilic sheet or the like can be used. An example of fluff pulp is a defibrated wood pulp or non-wood pulp. An example of a superabsorbent polymer is sodium polyacrylate. As the hydrophilic sheet, for example, tissue, absorbent paper, or a nonwoven fabric subjected to a hydrophilic treatment can be used.

  The absorber 22 is sandwiched between the top sheet 18 and the back sheet 20 by being sandwiched between the top sheet 18 and the back sheet 20 and sealing the peripheral edges of both sheets. The shape of the absorber 22 is not limited to the illustrated shape, and may be, for example, a rectangular shape, a gourd shape, or a T shape. In the tape-type disposable diaper 100 shown in FIGS. 1 to 3, a rectangular absorbent body is employed as the absorbent body 22.

(1-5. Top sheet)
The top sheet 18 is a liquid-permeable sheet disposed so as to cover the skin contact surface side of the absorber 22. The top sheet 18 allows a liquid such as urine to permeate the absorber 22 arranged on the lower surface side thereof.

  As the liquid permeable material constituting the top sheet 18, for example, a woven fabric, a non-woven fabric, or a porous fill can be adopted. In particular, it is preferable to use a non-woven fabric made of a thermoplastic resin such as polypropylene, polyethylene, polyester, or nylon and subjected to a hydrophilic treatment.

  The top sheet 18 may be composed of a single sheet material, but may be composed of a plurality of sheet materials. For example, the structure which combined the sheet | seat arrange | positioned at the surface part of an absorber and the sheet | seat arrange | positioned at the part of a side flap may be sufficient.

(1-6. Backsheet)
The back sheet 20 is a liquid-impermeable sheet disposed so as to cover the absorber 22 from the non-skin contact surface side. The backsheet 20 prevents the liquid held by the absorber 22 from leaking outside the diaper.

  As the liquid-impermeable material constituting the backsheet 20, for example, a liquid-impermeable film made of a resin such as polyethylene can be employed. In particular, it is preferable to use a microporous polyethylene film. This microporous polyethylene film is preferable in that it has a large number of fine pores of about 0.1 μm and is liquid impermeable but moisture permeable so that it can prevent the diaper from being steamed.

  In addition, a cover sheet may be bonded to the outer surface of the back sheet 20 in order to reinforce the back sheet 20 and improve its feel. As a material for forming the cover sheet, for example, a nonwoven fabric made of a thermoplastic resin such as polyethylene, polypropylene, or polyester, or a wet nonwoven fabric can be used.

(1-7. Solid gathers)
The three-dimensional gather 26 is a member that functions as a leak-proof wall for preventing the urine excreted by the wearer from leaking out of the diaper. The three-dimensional gather 26 may be formed by a side sheet different from the top sheet 18 and the back sheet 20. For example, one end side of the side sheet is fixed to the surface of the top sheet 18, and the three-dimensional gather stretchable material 28 is disposed in an extended state on the other end side. Thereby, the three-dimensional gather 26 stands up by the contraction force of the three-dimensional gather stretchable material 28, and can effectively prevent a side leak in which liquid such as urine leaks from the opening around the leg of the diaper.

  The three-dimensional gather 26 may be formed at least in the crotch part 4 in order to prevent leakage from the crotch part 4, but may be formed over the back body 6 and the front body 2. The three-dimensional gathers 26 may be formed in at least one pair on the left and right sides of the crotch, and may be formed in two or more pairs on the left and right sides of the crotch, for example.

(1-8. Various gathers)
In the tape-type disposable diaper 100, in addition to the three-dimensional gather 26, it is preferable to form a gathering around the legs and a gathering around the waist.

  The leg-around gather is a member for preventing a liquid such as urine from leaking from the opening around the leg of the disposable diaper. The leg elastic members 40 are arranged in an extended state along the openings around the legs, and gathers are formed around the legs using the contraction force of the leg elastic members 40. Thereby, it becomes difficult to form a gap around the leg, and urine leakage from the opening around the leg can be effectively prevented. Further, when the gathers around the legs are formed, when the diaper is changed, the leg stretchable material 40 contracts on both sides of the absorber 22, so that the crotch part 4 is deformed into a bowl shape as a whole. For this reason, urine and body fluid are collected in the crotch part 4 formed in a bowl shape, and the diaper can be easily replaced without spilling urine.

  For example, the tape-type disposable diaper 100 shown in FIG. 2 has two leg-around elastic members 40 that are straight along the longitudinal direction (vertical direction) of the diaper around the legs of the tape-type disposable diaper 100. This is an example. The leg-around elastic member 40 is made of, for example, thread rubber or flat rubber. The leg-around elastic members 40 are not necessarily arranged linearly, and may be arranged in a curved line along the curve of the leg-periphery opening, for example.

  The waist gathers are members for preventing leakage of urine from the opening around the waist of the disposable diaper, improving the fit of the tape-type disposable diaper, and preventing the diaper from falling down. A waist elastic member 42 is disposed in an extended state along the opening around the waist, and a waist waist gather is formed using the contraction force of the waist elastic member 42. Thereby, since the back body 6 of the tape-type disposable diaper 100 is in close contact with the back of the wearer, it is possible to improve fit while effectively preventing urine leakage from the back.

  For example, the tape-type disposable diaper 100 shown in FIG. 2 has a waist elastic member 42 made of flat rubber at a position corresponding to the waist around the end of the back body 6 along the short direction (left-right direction) of the diaper. Is an example in which The waist elastic member 42 can be made of, for example, thread rubber or flat rubber, like the leg elastic member 40.

  Examples of the leg stretchable material 40 and the waist stretchable material 42 include rubber made of an elastic material such as natural rubber or synthetic rubber (urethane rubber, etc.), a stretchable net, a stretchable film, and a stretchable foam (urethane foam, etc.). Can be adopted. These elastic materials are fixed to other constituent members of the diaper by an adhesive or other means. The fixing method may be, for example, adhesion using a hot melt adhesive or other highly fluid adhesive, or may be welding by heat, ultrasonic waves, or the like such as heat sealing.

[Embodiment 2]
Hereinafter, Embodiment 2 of the tape type disposable diaper of this invention is demonstrated, referring FIG. FIG. 5 is an enlarged schematic view schematically showing a portion where the front patch of Embodiment 2 of the tape-type disposable diaper of the present invention is disposed. The tape-type disposable diaper 200 according to the second embodiment has a configuration other than the configuration of the stretchable portion 35a provided in the region where the upper cutout portion 31 (the upper cutout portion 31 of the front patch 30) of the absorbent main body 14 is formed. It is comprised similarly to the tape type disposable diaper 100 of Embodiment 1 shown in FIG. Therefore, in the tape type disposable diaper 200 of Embodiment 2, each component of the tape type disposable diaper 100 of Embodiment 1 shown in FIG. 1 is added to the components configured in the same manner as the tape type disposable diaper 100 of Embodiment 1. The same reference numerals are used and the description thereof is omitted.

  As shown in FIG. 5, the front patch 30 of the tape-type disposable diaper 200 is formed by cutting an upper portion 301 that is notched so that the upper edge 301 side located on the edge side of the front body 2 is recessed toward the inner side of the front patch 30. A notch 31 is formed. Furthermore, the expansion / contraction part 35a is provided in the area | region in which the upper notch part 31 of the absorptive main body 14 was formed. The stretchable portion 35a is formed by a stretchable material 36a disposed on the absorbent main body 14 in the stretched state. In the tape-type disposable diaper 200 of Embodiment 2, the elastic part 35a is formed by arrange | positioning the elastic material 36a of a rubber thread shape in the shape of a curve. There is no restriction | limiting in particular about the number of the elastic materials 36a. The elastic material 36a may be determined in consideration of the degree of expansion / contraction of the expansion / contraction part 35a, etc., and the constituent material, the expansion rate of the material, the expansion state at the time of fixation, and the like may be determined. In addition, in FIG. 5, although the example at the time of arrange | positioning the expansion-contraction material 36a in the curve form is shown, you may arrange | position the expansion-contraction material 36a diagonally. Moreover, you may arrange | position the elastic material 36a in V shape so that it may be settled in the area | region in which the upper notch part 31 was formed.

[Embodiment 3]
Hereinafter, Embodiment 3 of the tape-type disposable diaper of the present invention will be described with reference to FIG. FIG. 6 is an enlarged schematic view schematically showing a portion where the front patch of Embodiment 3 of the tape-type disposable diaper of the present invention is disposed. The tape-type disposable diaper 300 according to the third embodiment has a configuration other than the configuration of the stretchable portion 35b provided in the region where the upper cutout portion 31 (the upper cutout portion 31 of the front patch 30) of the absorbent main body 14 is formed. It is comprised similarly to the tape type disposable diaper 100 of Embodiment 1 shown in FIG. Therefore, in the tape type disposable diaper 300 of Embodiment 3, each component of the tape type disposable diaper 100 of Embodiment 1 shown in FIG. 1 is added to the components configured similarly to the tape type disposable diaper 100 of Embodiment 1. The same reference numerals are used and the description thereof is omitted.

  As shown in FIG. 6, the front patch 30 of the tape-type disposable diaper 300 is formed by cutting the upper edge 301 located on the edge of the front body 2 so that the upper edge 301 is recessed toward the inner side of the front patch 30. A notch 31 is formed. Furthermore, the expansion / contraction part 35b is provided in the area | region in which the upper notch part 31 of the absorptive main body 14 was formed. The stretchable portion 35b is formed by a stretchable material 36b disposed on the absorbent main body 14 in the stretched state. In the tape type disposable diaper 300 of Embodiment 3, the elastic part 35b is formed by arrange | positioning the elastic material 36b of a rubber thread shape in the shape of a curve. In this tape-type disposable diaper 300, three elastic members 36b are arranged in a curved line at a predetermined interval in accordance with the curved shape of the upper edge 301 of the upper notch 31.

[Embodiment 4]
Hereinafter, Embodiment 4 of the tape type disposable diaper of this invention is demonstrated, referring FIG. FIG. 7 is an enlarged schematic view schematically showing a portion where the front patch of Embodiment 4 of the tape-type disposable diaper of the present invention is disposed. In addition, the tape-type disposable diaper 400 of Embodiment 4 is except the structure of the expansion-contraction part 35c provided in the area | region in which the upper notch part 31 (upper notch part 31 of the front patch 30) of the absorptive main body 14 was formed. It is comprised similarly to the tape type disposable diaper 100 of Embodiment 1 shown in FIG. Therefore, in the tape type disposable diaper 400 of Embodiment 4, each component of the tape type disposable diaper 100 of Embodiment 1 shown in FIG. 1 is added to the components configured similarly to the tape type disposable diaper 100 of Embodiment 1. The same reference numerals are used and the description thereof is omitted.

  As shown in FIG. 7, the front patch 30 of the tape-type disposable diaper 400 is formed by cutting an upper cutout such that the upper edge 301 side located on the edge side of the front body 2 is recessed toward the inner side of the front patch 30. A notch 31 is formed. Furthermore, the expansion-contraction part 35c is provided in the area | region in which the upper notch part 31 of the absorptive main body 14 was formed. The stretchable portion 35c is formed by a stretchable material 36c disposed on the absorbent main body 14 in the stretched state. In the tape-type disposable diaper 400 of the fourth embodiment, the stretchable portion 35c is formed by disposing a wide rubber stretchable material 36c. The shape of the wide rubber elastic material 36c is rectangular. However, the shape of the wide rubber elastic material 36c is not limited to a rectangle, and may be, for example, a shape in which a corner portion of the rectangle is cut into an R shape.

[Embodiment 5]
Hereinafter, Embodiment 5 of the tape type disposable diaper of this invention is demonstrated, referring FIG. FIG. 8 is an enlarged schematic view schematically showing a portion where the front patch of Embodiment 5 of the tape-type disposable diaper of the present invention is disposed. The tape-type disposable diaper 500 according to the fifth embodiment has a configuration other than the configuration of the stretchable portion 35d provided in the region where the upper cutout portion 31 (the upper cutout portion 31 of the front patch 30) of the absorbent main body 14 is formed. It is comprised similarly to the tape type disposable diaper 100 of Embodiment 1 shown in FIG. Therefore, in the tape-type disposable diaper 500 of Embodiment 5, each component of the tape-type disposable diaper 100 of Embodiment 1 shown in FIG. 1 is added to the components configured in the same manner as the tape-type disposable diaper 100 of Embodiment 1. The same reference numerals are used and the description thereof is omitted.

  As shown in FIG. 8, the front patch 30 of the tape-type disposable diaper 500 has an upper cut-out part that is cut out so that the upper edge 301 side located on the edge side of the front body 2 is recessed toward the inner side of the front patch 30. A notch 31 is formed. Furthermore, the expansion-contraction part 35d is provided in the area | region in which the upper notch part 31 of the absorptive main body 14 was formed. The stretchable portion 35d is formed by a stretchable material 36d disposed on the absorbent main body 14 in the stretched state. In the tape-type disposable diaper 500 of the fifth embodiment, the stretchable portion 35d is formed by disposing a wide rubber stretchable material 36d. The shape of the wide rubber elastic material 36d is a semi-elliptical shape. However, the shape of the wide rubber elastic material 36d is not limited to a semi-elliptical shape, and may be, for example, a semi-circular shape or other irregular shape.

[Embodiment 6]
Hereinafter, Embodiment 6 of the tape type disposable diaper of this invention is demonstrated, referring FIG. FIG. 9 is an enlarged schematic view schematically showing a portion where the front patch of Embodiment 6 of the tape-type disposable diaper of the present invention is disposed. In addition, the tape-type disposable diaper 600 of Embodiment 6 has a configuration other than the configuration of the stretchable portion 35e provided in the region where the upper cutout portion 31 (the upper cutout portion 31 of the front patch 30) of the absorbent main body 14 is formed. It is comprised similarly to the tape type disposable diaper 100 of Embodiment 1 shown in FIG. Therefore, in the tape-type disposable diaper 600 of Embodiment 6, each component of the tape-type disposable diaper 100 of Embodiment 1 shown in FIG. 1 is added to the components configured in the same manner as the tape-type disposable diaper 100 of Embodiment 1. The same reference numerals are used and the description thereof is omitted.

  As shown in FIG. 9, the front patch 30 of the tape-type disposable diaper 600 is formed by cutting the upper edge 301 located on the edge side of the front body 2 so that the upper edge 301 is recessed toward the inner side of the front patch 30. A notch 31 is formed. Furthermore, the expansion-contraction part 35e is provided in the area | region in which the upper notch part 31 of the absorptive main body 14 was formed. The stretchable portion 35e is formed by a stretchable material 36e disposed on the absorbent main body 14 in the stretched state. In the tape-type disposable diaper 600 of Embodiment 6, the stretchable part 35e is formed by arranging the net-like stretchable material 36e. There is no restriction | limiting in particular about the shape of the net-shaped expansion-contraction material 36e, A rectangle, a semi-ellipse shape, a semicircle shape, or another irregular shape may be sufficient.

[Embodiment 7]
Hereinafter, Embodiment 7 of the tape type disposable diaper of this invention is demonstrated, referring FIG. FIG. 10 is an enlarged schematic view schematically showing a portion where the front patch of Embodiment 7 of the tape-type disposable diaper of the present invention is disposed. The tape-type disposable diaper 700 of the seventh embodiment has a configuration other than the configuration of the stretchable portion 35f provided in the region where the front patch 30f and the upper cutout portion 31f (the upper cutout portion 31f of the front patch 30f) are formed. It is comprised similarly to the tape type disposable diaper 100 of Embodiment 1 shown in FIG. Therefore, in the tape-type disposable diaper 700 of Embodiment 7, each component of the tape-type disposable diaper 100 of Embodiment 1 shown in FIG. 1 is added to the components configured similarly to the tape-type disposable diaper 100 of Embodiment 1. The same reference numerals are used and the description thereof is omitted.

  As shown in FIG. 10, the front patch 30f of the tape-type disposable diaper 700 has an upper cutout in which the upper edge 301 located on the edge side of the front body 2 is cut out so as to be recessed toward the inner side of the front patch 30f. A notch 31f is formed. In the front patch 30f, an upper notch 31f is formed in the entire upper edge 301 located on the edge side of the front body 2. With this configuration, the influence of the boundary portion of the upper notch portion 31f is reduced, and even if the expansion / contraction portion 35f is provided across the boundary portion of the upper notch portion 31f (in other words, the upper end portion As compared with 302, even if the stretchable portion 35f is provided on the inner side of the region where the upper cutout portion 31f is formed, high leakage prevention can be realized. Also, the fit and the feeling of wearing are good. Of course, the expansion / contraction part 35f may be provided across the boundary part of the upper notch part 31f.

  Furthermore, the expansion / contraction part 35f is provided in the area | region in which the upper notch part 31f was formed. The stretchable portion 35f is formed by a stretchable material 36f disposed on the absorbent main body 14 in the stretched state. In the tape type disposable diaper 700 of Embodiment 7, the elastic part 35f is formed by arrange | positioning the elastic material 36f of a rubber thread shape linearly. There is no restriction | limiting in particular about the number of the expansion-contraction materials 36f. Moreover, the expansion-contraction part 35f may be comprised similarly to the expansion-contraction part of the tape type disposable diaper of Embodiment 2-6 demonstrated until now. The front patch 30f has a lower left cutout portion 32f formed by cutting out the lower left corner of the front patch 30f and a lower right cutout portion formed by cutting out the lower right corner of the front patch 30f on the lower edge 302 side facing the upper edge 301. 33f may be formed.

[Embodiment 8]
Hereinafter, Embodiment 8 of the tape type disposable diaper of this invention is demonstrated, referring FIG. FIG. 11: is an enlarged schematic diagram which shows typically the part by which the front patch of Embodiment 8 of the tape type disposable diaper of this invention was arrange | positioned. In addition, the tape type disposable diaper 800 of Embodiment 8 is comprised similarly to the tape type disposable diaper 100 of Embodiment 1 shown in FIG. 1 except the structure of the front patch 30g. Therefore, in the tape-type disposable diaper 800 of Embodiment 8, each component of the tape-type disposable diaper 100 of Embodiment 1 shown in FIG. 1 is added to the components configured in the same manner as the tape-type disposable diaper 100 of Embodiment 1. The same reference numerals are used and the description thereof is omitted.

  As shown in FIG. 11, the front patch 30g of the tape-type disposable diaper 800 has an upper cutout in which the upper edge 301 located on the edge side of the front body 2 is cut away so as to be recessed toward the inner side of the front patch 30g. A notch 31g is formed. In the front patch 30g, a plurality of strip-shaped adhesive portions 37 and strip-shaped non-bonded portions 38 are alternately arranged in the width direction of the absorbent main body 14, and are bonded and fixed to the front body 2 by the strip-shaped adhesive portions 37. Is. The tape-type disposable diaper 800 is worn while being curved along the curve of the wearer's abdomen. At the time of wearing, wrinkle-like wrinkles are formed on the inner side (skin side) of the front patch 30g. That is, the belt-like non-adhesive portion 38 in the front patch 30g bulges inward due to the curvature, and the front patch 30g is wrinkled. By this scissors, the contraction of the front patch 30g can be mitigated by the expansion / contraction force of the expansion / contraction material 36g of the expansion / contraction part 35g. Therefore, it becomes easy to attach the fastening tape 10 to the front patch 30g. Examples of the pattern for adhering the front patch 30g include a bead (linear shape) and a slot (planar shape).

  The width of the absorbent main body 14 in the width direction (left-right direction) of the band-shaped adhesive portion 37 for adhering and fixing the front patch 30g is preferably 1 to 70 mm, more preferably 5 to 50 mm. It is especially preferable that it is -30 mm. The length of the band-shaped non-adhesive portion 38 in the front patch 30g in the width direction (left-right direction) of the absorbent main body 14 is preferably 1 to 70 mm, more preferably 5 to 50 mm. It is especially preferable that it is -30 mm. By comprising in this way, the magnitude | size of the wrinkle formed in the front patch 30g and its pitch become appropriate, and it can relieve | moderate more favorably that the front patch 30g shrink | contracts.

  Moreover, in the tape-type disposable diaper 800 of Embodiment 8, the elastic part 35g is formed by arrange | positioning the elastic thread-like elastic material 36g linearly. There is no restriction | limiting in particular about the number of the elastic materials 36g. Moreover, the expansion-contraction part 35g may be comprised similarly to the expansion-contraction part of the tape type disposable diaper of Embodiment 2-6 demonstrated so far.

[Tape-type disposable diaper manufacturing method]
Hereinafter, the whole flow of the manufacturing method of the tape type disposable diaper of this invention is demonstrated. Here, although the manufacturing method of the tape type disposable diaper 100 shown in FIGS. 1-3 is demonstrated, about the manufacturing method of a tape type disposable diaper, it is not limited to the following manufacturing methods.

  First, the absorber 22 is placed on the upper surface of a long backsheet material that is a material of the backsheet 20. In addition, the stretchable material 36 is disposed in a stretched state in a region where the upper notch 31 is formed on the upper surface of the long backsheet material. Then, a long top sheet material as a material of the top sheet 18 is placed on these upper surfaces. Thereby, the intermediate body which a disposable diaper continues continuously is produced.

  The stretchable material 36 is sandwiched and fixed between the long backsheet material and the long topsheet material. Thereby, the expansion-contraction part 35 is formed in the area | region in which the upper notch part 31 is formed.

  Further, when producing the above-described intermediate body, a long side sheet material as a material of the side sheet is bonded to the top sheet material, and the three-dimensional gather elastic material 28 is disposed on the side sheet material, and the three-dimensional gather 26 It is good also as forming.

  The intermediate body of the disposable diaper thus obtained is cut out (R-cut) by cutting out a portion corresponding to the opening around the leg of the diaper in an arc shape to form an opening around the leg. Thereafter, the fastening tape 10 and the front patch 30 formed in separate lines are attached to the back body 6 and the front body 2, respectively. And finally, the tape-type disposable diaper 100 can be manufactured by individually cutting the intermediate body of the disposable diaper.

  Next, a method for manufacturing the front patch 30 will be described with reference to FIG. In particular, an example in which the upper edge 301 and the lower edge 303 of the front patch 30 are curved in the same shape will be described below.

  FIG. 12 is a schematic view schematically showing the manufacturing process of the front patch 30. As shown in FIG. 12, a front patch roll 52 around which a long front patch material 51 as a material of the front patch 30 is wound is positioned upstream of the production line. From the front patch roll 52, the front patch material 51 is pulled out and is carried along the direction of arrow A to the downstream of the production line. A cutting cutter roller 53 is positioned downstream of the front patch roll 52. The cutting cutter roller 53 has a rotation shaft and rotates in the direction of arrow B. The cutting cutter roller 53 cuts the front patch material 51 carried along the production line in a direction perpendicular to the flow direction to form individual front patches 30.

  Here, the cutting blade 54 of the cutting cutter roller 53 is curved in a shape corresponding to the shapes of the upper edge 301 and the lower edge 303 of the front patch 30. Therefore, it is possible to cut the upper edge 301 and the lower edge 303 of the front patch 30 by using one cutting cutter roller 53. As described above, if the shapes of the upper edge 301 and the lower edge 303 coincide with each other, the front patch 30 can be efficiently manufactured using the cutting cutter roller 53, and thus the manufacturing cost is reduced. And the speed of manufacturing the front patch 30 can be improved. The method for manufacturing the front patch 30 is not limited to the method shown in FIG.

  As mentioned above, although embodiment was described, this invention is not limited to these, A various deformation | transformation and change are possible within the range of the summary.

  The tape-type disposable diaper of the present invention can be applied to a tape-type disposable diaper for infants or adults such as elderly people and persons with disabilities who need care. Therefore, the present invention can be suitably used in the child care industry, the care industry, and the like.

2: Front body, 2a, 2b: Side edge, 4: Crotch, 6: Rear body, 6a, 6b: Side edge, 10: Fastening tape, 14: Absorbent body, 18: Top sheet, 20: Back sheet , 22: Absorber, 26: Solid gather, 28: Solid gather elastic material, 30, 30f, 30g: Front patch, 30a: Center region, 30b: Left region, 30c: Right region, 301: Upper edge, 302 : Upper end, 303: lower edge, 304: lower edge, 305: left edge, 306: right edge, 31, 31f: upper notch, 311: concave top of upper notch, 32, 32f: lower left notch Part, 321: concave top part of lower left notch part, 33, 33f: lower right notch part, 331: concave top part of lower right notch part, 35, 35a, 35b, 35c, 35d, 35e, 35f, 35g: expansion and contraction Part, 36, 6a, 36b, 36c, 36d, 36e, 36f, 36g: elastic material, 37: adhesive part, 38: non-adhesive part, 40: elastic material around leg part, 42: elastic material around waist, 44: fastening means, 51 : Front patch material, 52: Front patch roll, 53: Cutting cutter roller, 54: Cutting blade, 100, 200, 300, 400, 500, 600, 700, 800: Tape-type disposable diaper, X: Boundary part.

Claims (13)

An absorbent main body composed of a front body, a crotch part, and a back body, and a plurality of sheets laminated in a state of sandwiching an absorbent body,
A fastening tape arranged to extend from the left and right side edges of the back body of the absorbent main body,
A front patch disposed on the front body of the absorbent main body for attaching the fastening tape,
The front patch is formed with an upper notch portion that is cut out so that the upper edge side located on the edge side of the front body is recessed toward the inner side of the front patch,
A tape-type disposable diaper, wherein a stretchable part is provided in a region where the upper cutout part of the absorbent main body is formed.   The said expansion-contraction part is provided ranging over the boundary part which ties each upper end part of the said upper edge side which forms the said upper notch part from the area | region in which the said upper notch part was formed. Tape-type disposable diaper.   The tape-type disposable diaper according to claim 1 or 2, wherein the stretchable portion is provided so as not to overlap an area where the front patch is disposed.   The tape-type disposable diaper according to any one of claims 1 to 3, wherein the stretchable part is provided so as not to overlap an area of the absorbent main body where the absorber is disposed.   In the front patch, a plurality of band-shaped adhesive portions and band-shaped non-adhesive portions are alternately arranged in the width direction of the absorbent main body, and are bonded and fixed to the front body by the band-shaped adhesive portions. The tape-type disposable diaper as described in any one of Claims 1-4 which exists.   The width of the absorbent main body in the width direction of the strip-shaped adhesive portion for bonding and fixing the front patch is 1 to 70 mm, and the length of the strip-shaped non-adhesive portion in the width direction of the absorbent main body. The tape-type disposable diaper according to claim 5, wherein is 1 to 70 mm.   The shortest distance from the concave top part of the said upper notch part to the said boundary part which connects each upper end part of the right and left of the said upper edge is 5 mm or more and 80 mm or less, It is any one of Claims 1-6. Tape-type disposable diaper.   The said upper edge of the said front patch contains the curve which connects the concave top part of the said upper notch part, and at least one of each upper-end part of the right and left of the said upper edge part, The curve as described in any one of Claims 1-7. The tape-type disposable diaper described in 1.   In the front patch, on the lower edge side opposite to the upper edge, a lower left cutout part in which a lower left corner of the front patch is cut out, and a lower right cutout part in which a lower right corner of the front patch is cut off, The tape-type disposable diaper according to any one of claims 1 to 8, wherein is formed.   The tape mold according to claim 9, wherein the lower edge of the front patch includes a curve connecting the concave top of the lower left notch, the lower end of the front patch, and the concave top of the lower right notch. Disposable diapers.   The tape-type disposable diaper according to claim 9 or 10, wherein the shape of the upper edge of the front patch and the shape of the lower edge of the front patch are the same shape. The front patch has two side edges extending from left and right ends of the upper edge,
The left and right upper ends of the upper edge are located closer to the central region side of the front patch than the left and right ends of the upper edge,
The tape-type disposable diaper according to any one of claims 1 to 11, wherein an angle formed by a tangent line of the upper edge at the intersection of the side edge and the upper edge and the side edge is an obtuse angle. The front patch has two side edges extending from left and right ends of the upper edge,
The left and right upper ends of the upper edge coincide with the left and right ends of the upper edge,
The tape-type disposable diaper according to any one of claims 1 to 11, wherein an angle formed by a tangent line of the upper edge at an intersection of the side edge and the upper edge and the side edge is an acute angle.

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