JP2016101391A - Disposable diaper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disposable diaper free from becoming dirty until being worn.SOLUTION: In a disposable diaper 10 in which an inseam area 13 is folded in half, and each inner surface 16 of a front girth area 11 and a rear girth area 12 is folded in an overlapped state, a temporarily fixed area 60 is formed, which is obtained by bonding partially separably each inner surface 16 overlapped on the outside of a peripheral edge part of an absorber.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a disposable diaper, and more particularly to a folded disposable diaper.

  The disposable diaper prevents the skin contact surface of the diaper from being soiled by dust etc. by being folded so that the front waistline region and the back waistline region overlap each other from the time it is manufactured until it is worn be able to.

  In the packaging structure described in Japanese Patent Application Laid-Open No. 2000-24030 (Patent Document 1), a pants-type absorbent article taking a pants-type diaper as an example is in a folded state, and is inserted into a cylindrical packaging material. Both ends of the packaging material are sealed by joining, and the diaper is individually packaged.

JP 2000-24030 A

While diapers are individually packaged, it is preferable for hygiene, but the unit price of diapers is increased. Moreover, in the process from a diaper being manufactured until it is worn, it is not always the case that the diaper cannot be soiled unless the diaper is individually wrapped.
Therefore, the present invention provides an improvement that can be easily applied to the disposable diaper so that the skin contact surface that is the inner surface of the disposable diaper is not easily soiled until the disposable diaper is worn. It is an issue.

  In order to solve the above problems, the present invention is directed to the formation of a front waistline region, a back waistline region, and a crotch region having inner and outer surfaces, and the front waistline region at the center in the width direction of the crotch region. A disposable body that is formed extending toward the rear waistline, is folded in such a manner that the crotch region is folded in half with the inner surface facing inward, and the front waistline region and the rear waistline region overlap each other. A diaper.

  The features of the present invention are as follows. A temporary fastening region is formed on the outer side of the peripheral edge of the absorbent body so that the overlapping inner surfaces are joined in a partially peelable manner.

  In the disposable diaper according to the present invention, a temporary fastening region in which inner surfaces of the diaper are detachably joined is formed on the outer periphery of the absorbent body. If the inner surfaces are not peeled off until the diaper is worn, dust or the like will not enter between the inner surface and the inner surface to be soiled.

The drawings illustrate certain embodiments of the invention according to the present disclosure and include selective and preferred embodiments as well as essential configurations of the invention.
The perspective view of the diaper which concerns on this invention. The figure which shows the II-II line | wire cut surface of FIG. The perspective view of the diaper of FIG. 1 in a wearing condition. FIG. 2 is a partially broken development view of the diaper of FIG. 1. The figure which shows the application | coating state of a hot-melt-adhesive using the expanded view of FIG. The figure which shows the VI-VI line | wire cut surface of FIG. The figure which shows another example of the application | coating state of a hot-melt-adhesive. The figure similar to FIG. 4 which shows an example of an embodiment.

  Details of the folded disposable diaper according to the present invention will be described with reference to the accompanying drawings.

  FIG. 1 shows a perspective view of a diaper 10 made in a pants shape as an example of a folded disposable diaper. The diaper 10 is formed with a front waistline region 11, a rear waistline region 12, and a crotch region 13, and a postscript absorber 46 extending toward the front waistline region 11 and the back waistline region 12 is formed in the crotch region 13. Is formed. The diaper 10 has an inner surface 16 that faces the skin of a diaper wearer (not shown) and an outer surface 17 that faces the wearer's clothes (not shown) when the diaper 10 is worn. The crotch region 13 is folded in half, and the front waistline region 11 and the back waistline region 12 are folded so as to overlap each other. The front waistline region 11 and the rear waistline region 12 have side edges 18 and 19 joined to each other at a number of ultrasonic joining regions 21, and the diaper 10 has a waistline opening 22 and a pair of leghole openings 23. And are formed. Such a diaper 10 may be called a pants-type diaper or a pull-up type diaper.

  FIG. 2 is a diagram showing a cross section taken along the line II-II in FIG. In the folded diaper 10, a part of the inner surface 16 of the front waistline region 11 and a part of the inner surface 16 of the rear waistline region 12 that are opposed to each other are formed in a temporary fastening region 60 formed outside the peripheral edge of the inner member 27 described later. In the edge part temporary fastening area 61 which is one of the above, it joins so that peeling is possible via a hot-melt-adhesive. In such a diaper 10, the crotch region 13 maintains a folded state until the front waistline region 11 and the rear waistline region 12 are not forcibly separated in the temporary fastening region 60 until the diaper 10 is worn. In addition, it is possible to prevent dust from entering between the overlapping inner surfaces 16 and 16, particularly between the inner surfaces 16 and 16 in the crotch region. In the figure, the front waistline region 11 and the back waistline region 12 are easily separated by pulling the front waistline region 11 in the direction of arrow A and pulling the back waistline region 12 in the direction opposite to arrow A, that is, in the direction of arrow B. Can be made.

  FIG. 3 is a perspective view when the diaper 10 of FIG. 1 is in a state of being worn with the waistline opening 22 widened, but the wearer's illustration is omitted. In the present invention, the diaper in FIG. 2 is also sometimes referred to as a diaper 10. Moreover, when distinguishing the diaper 10 of FIG. 2 from the folded diaper 10 of FIG. 1, it may be called the diaper 10 of a wearing condition.

  4 shows that the front waistline region 11 and the back waistline region 12 are separated from each other in the joining region 21 of the diaper 10 of FIG. It is a partially broken top view of the diaper 10 which shows the inner surface 16 when it expand | deploys with the direction Y. FIG. In the present invention, the diaper 10 in the state of FIG. 4 may also be called the diaper 10. Moreover, when the diaper of FIG. 4 is distinguished from the diaper 10 of FIG. 1, it may be called the unfolded diaper 10.

  As is apparent from FIG. 4, the diaper 10 is formed in an hourglass shape and includes an outer member 26 having a front waistline region 11, a rear waistline region 12, and a crotch region 13, and an inner surface 16 of the outer member 26 on the inner surface 16 described later. And a rectangular inner member 27 attached via an adhesive 58 (see FIG. 5). The shapes of the outer member 26 and the inner member 27 are made to be symmetric or substantially symmetric with respect to a center line CC that bisects the dimension in the lateral direction X of the outer member 26.

  The outer member 26 includes an hourglass-shaped outer sheet 30 that extends to the front waistline region 11, the rear waistline region 12, and the crotch region 13, and a hot melt adhesive (not shown) on the outer sheet 30 in the front waistline region 11. A first inner sheet 31 that is joined, and a second inner sheet 32 that is joined to the outer sheet 30 via a hot-melt adhesive (not shown) agent in the rear waistline region 12 and a part of the crotch region 13. Have.

  Between the outer sheet 30 and the first inner sheet 31, a plurality of front waistline elastic members 33 attached to at least one of the sheets 30, 31 via a hot melt adhesive (not shown), and a plurality of sheets. The front waistline auxiliary elastic member 34 extends in the lateral direction X which is also the width direction of the diaper 10. Further, between the outer sheet 30 and the second inner sheet 32, a plurality of rear waistline elastic members 35 attached to at least one of these sheets 30, 32 via a hot melt adhesive (not shown), A plurality of rear waistline auxiliary elastic members 36 extend in the lateral direction X.

  The inner member 27 has both side edge portions 41 parallel to the center line CC, a front end edge portion 42 and a rear end edge portion 43 orthogonal to the center line CC, and these are peripheral portions of the inner member 27. Is forming. In the lateral direction X, a breakwater 44 commonly used in the technical field is formed inside each of the side edges 41. A liquid-permeable top sheet 45 (see FIG. 6), which will be described later, can be seen between the breakwaters 44 and 44. The top sheet 45 covers an absorber 46 shown in FIG. A leg-hole elastic member 48 is attached to the side edge portion 41 of the inner member 27 in an extended state. An elastic member 51 is attached to the distal edge 49 of the leakage breaker 44 in an extended state.

  In the outer member 26 and the inner member 27 thus formed, in the front waistline region 11, the front waistline elastic member 33 extends from one side edge 18 to the other side edge so as to cross the front waistline region. 18 extends in an extended state. The front waistline auxiliary elastic member 34 extends in a stretched state between the side edge 18 and the side edge 41 of the inner member 27 and overlaps the inner member 27 in the thickness direction of the outer member 26 (see FIG. 6). It has an inner end 52. The inner end portion 52 may be in an extended state or a non-extended state, and is preferably in a non-extended state so that the inner member 27 is not gathered. Further, the front waistline auxiliary elastic member 34 may include a member that has the inner end portion 52 outside the inner member 27 and does not overlap the inner member 27. In the figure, an elastic member non-existing region 55 is formed between the front end edge portion 42 of the inner member 27 and the front waistline elastic member 33. The non-existing area 55 is a part with less gathers formed by the contraction of the front waistline elastic member 33.

  In the rear waistline region 12, the rear waistline elastic member 35 extends from one side edge 19 to the other side edge 19 so as to cross the rear waistline 12. The rear waistline auxiliary elastic member 36 extends in an extended state between the side edge portion 19 and the side edge portion 41 of the inner member 27, and is an inner end at a position overlapping the inner member 27 in the thickness direction of the outer member 26. Part 53. Similarly to the inner end portion 52, the inner end portion 53 may be in an extended state or a non-extended state, and is preferably in a non-extended state. Further, the rear waistline auxiliary elastic member 36 may include an inner end portion 53 outside the inner member 27 that does not overlap with the inner member 27. Between the rear end edge portion 43 of the inner member 27 and the rear waistline elastic member 35, an elastic member non-existing region 56 is formed.

  Further, in the rear waistline region 12, a temporary fixing hot of the hot melt adhesive 58 to be described later is formed on the non-existing region 56 outside the rear end edge 43 of the inner member 27 and a part on the outer side of the side edge 41. By applying the melt adhesive 58a, an end edge temporary fastening area 61 and a side edge temporary fastening area 62 in the temporary fastening area 60 (see FIG. 2) are formed. When the crotch region 13 of the unfolded diaper 10 is folded along the center line DD that bisects the dimension in the front-rear direction Y, in other words, the inner member 27 extends along the center line DD. In the folded state, as illustrated in FIG. 2, until the non-existing area 55 in the front waistline area 11 is detachably joined to the temporary edge fastening area 61 and the diaper 10 is worn. The folded state of the inner member 27 can be maintained. Further, when the inner member 27 is folded, the side edge temporary fastening region 62 faces a part of the front waistline region 11, and a part thereof is detachably joined so that the inner member 27 is folded. Can be maintained.

  When the diaper 10 of FIG. 1 in which the front waistline region 11 and the rear waistline region 12 are in such a state is to be worn, the front and rear waist regions 11 and 12 are moved forward and backward so that the front waistline opening is opened widely. The front and rear waist regions 11 and 12 may be peeled off at the end edge temporary fastening area 61 and the side edge temporary fastening area 62.

  It is preferable that the temporary fastening hot-melt adhesive 58a does not overlap with the rear waistline elastic member 35 in the end edge temporary fixing region 61, but the present invention can also be implemented in an overlapping state. However, if the hot-melt adhesive 58a for temporary fixing is in the non-existing area 56 and does not overlap with the rear waistline elastic member 35, the second inner sheet 32 is not removed when the front and rear waistlines 11 and 12 are peeled off. Even when pulled by the first inner surface sheet 31, it is possible to prevent the second inner surface sheet 32 from peeling from the rear waistline elastic member 35.

  On the other hand, in the side edge portion temporary fastening region 62, the temporary fastening hot melt adhesive 58a is overlapped with or applied to the rear waistline auxiliary elastic member 36 so that the temporary fastening hot melt adhesive 58a is on the side. The inner member in the rear waistline region 12 acts by making the second inner surface sheet 32 in the edge temporary fastening region 62 difficult to be deformed and contracting the rear waistline elastic member 35 and the rear waistline auxiliary elastic member 36. 27, a portion adjacent to the side edge 41, for example, the side edge temporary fastening region 62 is moved so as to be pulled toward the center line C-C and is prevented from overlapping with the side edge 41. be able to.

FIG. 5 shows an example of an application pattern of the hot melt adhesive 58 applied to the inner surface 16 of the outer member 26 in order to join the outer member 26 and the inner member 27. The hot melt adhesive 58 applied so as to draw a spiral by adopting a spiral spray method is mainly used to form an end edge temporary fixing area 61 and / or a side edge temporary fixing area 62, and an outer member. A hot-melt adhesive 58a for temporary fixing that also contributes to the joining of the inner member 27 and the inner member 27, and a hot-melt adhesive 58b for fastening that is intended for the non-peelable joining of the outer member 26 and the inner member 27. include. Although the same thing can be used for the hot-melt-adhesive 58a for temporary fixing, and the hot-melt-adhesive 58b for fastening, the unit area of the hot-melt-adhesive 58b for fastening by using the spray nozzle from which a diameter differs, for example can be used. While increasing the coating amount per unit, it is preferable to decrease the coating amount per unit area of the hot-melt adhesive 58a for temporary fixing. In one embodiment of the present invention, the hot-melt adhesive 58a for temporary fixing has a coating amount per unit area of 1--1 while drawing a spiral with a small wire diameter using, for example, a nozzle having a diameter of 0.41 mm. The hot-melt adhesive 58b to be fastened within a range of 4 g / m ^{2 is} a hot-melt adhesive for temporarily fixing the coating amount per unit area while drawing a spiral having a large wire diameter using, for example, a nozzle having a diameter of 0.64 mm Although it is larger than the coating amount per unit area of the adhesive 58a, the front and rear waistline regions 11 are formed in the end edge temporary fastening region 61 and the side edge temporary fastening region 62 so as not to exceed 10 g / m ^2. , 12 can be peeled without being damaged, while the inner member 27 is not peeled off. In addition, it is preferable that the edge part temporary fastening area | region 61 and the side edge part temporary fastening area | region 62 formed in this way have a dimension of at least 10 mm in the horizontal direction X and the front-back direction Y. Making the temporary fastening area 60 as shown in the drawing while applying the hot melt adhesive 58 for joining the inner member 27 can reduce the production cost of the hot melt adhesive applicator used in the diaper manufacturing process. In addition to helping to shorten the hot melt adhesive application process. Accordingly, the outer member 26 at the portion to which the inner member 27 is attached has an application area in which the amount of application of the hot melt adhesive 58 per unit area is the same as that of the temporary fixing area 60, and an application area larger than the temporary fixing area 60. Including. However, the coating amount in the large coating area does not exceed 10 g / m ² .

  In order to prevent the inner surface 16 of the diaper 10 from being soiled, the temporary fastening region 60 is preferably formed as shown in the illustrated example, but is formed adjacent to at least one of the front and rear end edges 42 and 43. It is also possible to carry out the present invention in any of the above-described forms and the forms formed adjacent to at least one of the side edge portions 41.

  As the hot-melt adhesive 58, an olefin-based or polyamide-based one can be used in addition to a rubber-based hot-melt adhesive using a synthetic rubber-based polymer such as SIS or SBS as a base polymer. . In addition, since the hot melt adhesive 58 may touch the diaper wearer's skin, it is preferable that the hot melt adhesive 58 does not exhibit tack force even when touched by a finger at a temperature of 60 ° C. or lower. This also means that if the diaper 10 is used under weather conditions in Japan, the front waistline region 11 peeled off from the temporary fastening region 60 will not be joined to the temporary fastening region 60 again. I mean. The method for applying the hot melt adhesive 58 is not particularly limited, but it is preferable that the hot melt adhesive 58 can be applied without bringing the nozzle or the like into contact with the outer member 26.

  FIG. 6 is a diagram schematically showing a section taken along the line VI-VI in FIG. 4, that is, a cross section in the thickness direction of the outer member 26 and the inner member 27. The outer member 26 in the figure is a portion formed by only the outer sheet 30, and the inner member 27 is joined to the inner surface 16 of the outer member 26 via a fastening hot melt adhesive 58 b. In the inner member 27, the absorbent body 46 formed by covering an aggregate 66 of a water-absorbing material such as pulverized pulp or superabsorbent polymer particles with a liquid-permeable wrapping sheet 67 is a liquid-permeable top sheet 45 (FIG. 4) and a liquid-impermeable back sheet 68. On both side edges 41 of the inner member 27, a breakwater 44, preferably formed of a liquid-impervious sheet, is attached. The proximal edge 47 of the leakage breaker 44 is in a state of covering the side edge 41 of the inner member 27, and is joined to the side edge 41 via a hot melt adhesive 69. An elastic member 51 in an extended state is attached to the distal edge 49 of the breakwater 44 via a hot melt adhesive (not shown). When the diaper 10 in FIG. 1 becomes the diaper 10 in the wearing state in FIG. 3, the elastic member 51 contracts, and the distal edge 49 is separated from the top sheet 45 into a virtual line state. Side leakage of body fluid can be prevented. A leg-hole elastic member 48 in an extended state is also attached to the side edge portion 41 of the inner member 27 via a hot melt adhesive 69.

  In the breakwater 44, at the portion of the proximal edge 47 where the side edge temporary fixing area 62 (see FIG. 4) is adjacent, the contraction of the rear waistline auxiliary elastic member 36 is the hot melt bonding for temporary fixing. Restrained by the agent 58a, it is less prone to gather and facilitates the separation of the distal edge 49 from the topsheet 45 as shown when the diaper 10 is worn. Note that the hot melt adhesive 69 used in FIG. 6 can change the coating amount, coating pattern, composition, and the like as appropriate according to the parts to be joined.

  The folded diaper 10 in FIG. 1 is such that it prevents the inner surface 16 from becoming dirty until the diaper 10 is used, and also slightly removes the front and rear waist areas 11 and 12. However, by requiring force, a person using the diaper 10 can understand that the diaper 10 is unused. In the diaper 10 that can act in this manner, the force required to peel the front and rear waist regions 11 and 12 in the temporary fastening region 60 is 0.1-2 per 10 mm in the lateral direction X dimension of the temporary fastening region 60. It is preferably in the range of 0.0N.

  The peeling force is as follows using a specimen having dimensions of 50 mm each in the transverse direction X cut out from the folded diaper 10 so as to include the temporary fastening region 60 and the longitudinal direction perpendicular thereto. Ask. The test piece is such that the temporary fastening area 60 is horizontal and the front waistline area and the back waistline part of the test specimen are pulled up by a tensile tester, for example, an upper part of a tensile tester RTA-100 manufactured by Orientec. Gripping with the chuck and the lower chuck, pulling at a speed of 300 mm / min, and obtaining the load when both parts are peeled. The load is divided by the dimension of the temporary fastening area 60 that has been measured in advance, and the peel force per 10 mm of the temporary fastening area 60 is obtained.

In the example of the diaper 10 thus formed, the following materials can be used.
Outer surface sheet 30: Spunbond nonwoven fabric with a mass per unit area of 15-25 g / m ² First and second inner surface sheets 31, 32: SMS nonwoven fabric with a mass per unit area of 10-18 g / m ² Top sheet 45: hydrophilic Supabondo nonwoven backsheet 68 of the mass per unit area of 15-20 g / ^{m 2:} mass per unit area of 20-25 g / ^{m 2} of breathable polyethylene film wrapping sheet 67: per unit area mass 8- 12 g / m ² hydrophilic SMS nonwoven fabric Front waistline elastic member 33, rear waistline elastic member 35: 940 dtex spandex stretched 3 times Front waistline auxiliary elastic member 34, rear waistline auxiliary elastic member 36: 780 dtex spandex 2 . Elongated 8 times Leg elastic member 48: Spandex of 780 dtex is tripled What was poured leakage preventing banks of the elastic member 51: that expands the spandex 780dtex 2.5 times

  FIG. 7 is a view similar to FIG. 5 showing an example of the embodiment. For the outer member 26 in FIG. 7, the inner member 27 in FIG. 4 can be used. However, in the outer member 26 of FIG. 7, between the side edge portions 19 and 19 of the rear waistline region 12, the leg periphery auxiliary elastic member 71 that crosses the inner member 27 while being curved is the outer sheet 30 and the second inner sheet. 32, and is joined to at least one of these sheets 30 and 32 via a hot melt adhesive (not shown). The second inner surface sheet 32 has a small wire diameter and a unit in the front-rear direction Y so as to be positioned between the fastening hot melt adhesives 58b and 58b with a large wire diameter and a large coating amount per unit area. A temporary fixing hot melt adhesive 58a having a small coating amount per area is applied. The temporary fixing hot melt adhesive 58a forms a side edge temporary fixing area 62 outside the side edge 41 of the inner member 27 indicated by an imaginary line. The temporary fixing hot melt adhesive 58 a is applied so as to overlap the leg-hole auxiliary elastic member 71. In the outer member 26 in this case, it is not necessary to provide the elastic member non-existing area 56 (see FIG. 4) outside the rear end edge 43 of the inner member 27.

  FIG. 8 is a view similar to FIG. 4 showing an example of the embodiment. However, the outer member 26 in the diaper 10 of FIG. 8 is different from that of FIG. 4 in that the front outer member 72 that forms the front waistline region 11 and a part of the crotch region 13, and the rear waistline region 12 and a part of the crotch region 13. And a rear outer member 73 that forms A portion 74 connecting the front outer member 72 and the rear outer member 73 in the crotch region 13 is formed by the inner member 27. On the inner surface 16 of the rear outer member 73, an end edge temporary fastening area 61 and a side edge temporary fastening area 62 similar to those in FIG. 4 are formed. This invention can also be implemented in the aspect in which the outer member 26 does not form the entire outer surface 17 of the diaper 10 in this way.

  In the description so far, the front waistline region 11 and the back waistline region 12 can be peeled, more preferably, a strong tack at 60 ° C. as a means for forming a temporary fastening region 60 for temporarily fastening the peelable and non-rejoinable regions. Although the hot-fix adhesive 58a for temporary fixing which does not show force is employed, other means may be employed for temporarily securing a required portion of the inner surface 16 of the diaper 10. For example, embossing, needle punching, or the like is performed on the overlapping front waistline region 11 and rear waistline region 12, and the fibers forming the inner surfaces 16 of these regions 11 and 12 are mechanically entangled. It can be a retaining area. Further, by performing embossing under heating or ultrasonic processing, the thermoplastic synthetic fibers forming the inner surface 16 can be welded together to form a temporary fastening region. These temporary fastening areas have the advantage that they can be implemented in the process after the diaper is completed in the diaper manufacturing process.

  In the unfolded diaper 10 in the illustrated example, the side edge 41 and the side edge 41 which are the peripheral edges of the inner member 27 and the side edge 41 and the edge edge temporary fastening area 61 which is the temporary fastening area 60 outside the rear edge 43. In the case where the temporary fastening area 62 is formed, but the diaper 10 does not have the inner member 27 and is simply the absorbent body 46 covered with the top sheet 45 and the back sheet 68, the front and back are made using, for example, fasteners. In the case of an open-type diaper that is separably connected to the side edge of the waistline region, the temporary fastening region 60 can be formed outside the peripheral edge of the absorber 46. The temporary fastening area 60 using the hot-melt adhesive 58a for temporary fastening can also be made in the front waistline area 11 instead of the rear waistline area 12, or in the rear waistline area 12 and the front waistline area 11. it can.

The present invention described so far can be summarized at least as follows.
A front waistline region, a rear waistline region, and a crotch region having inner and outer surfaces are formed, and an absorbent body extending toward the front waistline region and the rear waistline region is formed at the center in the width direction of the crotch region, and the inner surface A disposable diaper in which the crotch region is folded in two and folded so that the front waistline region and the rear waistline region overlap,
A temporary fastening region is formed on the outer side of the peripheral edge of the absorbent body so that the overlapping inner surfaces are joined in a partially peelable manner.

The present invention disclosed in the above paragraph can include at least the following embodiments. The embodiments can be adopted separately or in combination with each other.
(1) The inner surfaces that overlap in the temporary fastening region cannot be rejoined by any of hot melt adhesive, mechanical entanglement of non-woven fabrics forming the inner surface, and welding of the fibers. It is joined with.
(2) The diaper has at least the front waistline region and the rear waistline region of the front waistline region, the rear waistline region, and the crotch region, and at least a part of the inner surface is a thermoplastic synthetic fiber. An outer member formed of a non-woven fabric, and a hot melt adhesive located on the crotch region and extending from the crotch region toward the front waistline region and the rear waistline region on the inner surface of the outer member. An inner member attached via the inner member, the inner member includes the absorber, and the outer member is positioned on the outer side of the peripheral portion of the inner member. A temporary fastening area is formed.
(3) The hot melt adhesive, which is interposed between the inner member and the outer member and joins both the members, is also present in the temporary fastening region, and between the inner member and the outer member. The distribution of the amount of application per unit area of the hot melt adhesive intervening in the outer member is larger than the amount of application of the hot melt adhesive per unit area to the outer member in the temporary fastening region have.
(4) The hot melt adhesion in which the application amount per unit area of the hot melt adhesive in the temporary fastening region is 1-4 g / m ² and is interposed between the inner member and the outer member. The application amount per unit area in the portion where the agent is large is larger than the application amount per unit area in the temporary fixing region, but does not exceed 10 g / m ² .
(5) Each of the front waistline region and the rear waistline region includes a plurality of elastic members extending in a laterally extending state,
The peripheral portion of the inner member has both side edge portions that extend across the elastic member and both end edge portions that extend in parallel with the elastic member, and is formed outside the peripheral portion of the inner member. The application mode of the hot melt adhesive in the temporary fastening area is adjacent to at least one of the side edges and overlaps the elastic member in the thickness direction of the outer member, and at least one of the both end edges And at least one of the modes that do not overlap the elastic member in the thickness direction of the outer member.
(6) In the thickness direction of the outer member, the elastic member may be any one of an aspect that overlaps with each of the both side edge portions of the inner member in an expanded state and an aspect that overlaps with each of the both side edge portions in a non-extended state. It is in the aspect.
(7) The pull-up type disposable diaper in which the front waistline region and the rear waistline region are joined to each other at respective lateral side edges to form a waistline opening and a pair of leg hole openings, and the respective It is either an open-type disposable diaper which wears it by detachably connecting the lateral side edges of each other.

DESCRIPTION OF SYMBOLS 10 Diaper 11 Front waistline area 12 Rear waistline area 13 Inseam area 16 Inner surface 17 Outer surface 18 Side edge part 19 Side edge part 22 Trunk opening 23 Leg opening 26 Outer member 27 Inner member 33 Elastic member 34 Elastic member 35 Elastic member 36 Elastic member 41 Peripheral edge (side edge)
42 Peripheral edge (front edge)
43 Edge (Rear edge)
46 Absorber 58 Hot Melt Adhesive 58a Hot Melt Adhesive 58b Hot Melt Adhesive 60 Temporary Fastening Area 61 Temporary Fastening Area 62 Temporary Fastening Area X Horizontal Direction Y Longitudinal Direction

Claims (8)

A front waistline region, a rear waistline region, and a crotch region having inner and outer surfaces are formed, and an absorbent body extending toward the front waistline region and the rear waistline region is formed at the center in the width direction of the crotch region, and the inner surface A disposable diaper in which the crotch region is folded in two and folded so that the front waistline region and the rear waistline region overlap,
The said diaper characterized by the above-mentioned. The temporary fixing area | region where the said inner surfaces which overlapped were joined so that peeling was possible partially was formed in the outer side of the peripheral part of the said absorber.   The inner surfaces that overlap in the temporary fastening region are joined in a state where they cannot be rejoined by any of hot melt adhesive, mechanical entanglement of nonwoven fabric fibers forming the inner surface, and welding of the fibers. The diaper according to claim 1.   The diaper has at least the front waistline region and the rear waistline region of the front waistline region, the rear waistline region, and the crotch region, and at least a part of the inner surface is a nonwoven fabric of thermoplastic synthetic fiber. An outer member formed and extending from the crotch region toward the front waistline region and the rear waistline region and attached to the inner surface of the outer member via a hot melt adhesive. An inner member, the inner member including the absorber, and the temporary fastening region outside the peripheral portion of the inner member positioned outside the peripheral portion of the absorber The diaper according to claim 1 or 2, wherein is formed.   The hot melt adhesive, which is interposed between the inner member and the outer member and joins both the members, is also present in the temporary fastening region, and is interposed between the inner member and the outer member. The distribution of the amount of the hot melt adhesive applied to the outer member per unit area has a portion larger than the amount of the hot melt adhesive applied to the outer member per unit area of the temporary fastening area. The diaper according to claim 3. The application amount per unit area of the hot melt adhesive in the temporary fastening region is 1-4 g / m ² , and the hot melt adhesive interposed between the inner member and the outer member The diaper according to claim 4, wherein the coating amount per unit area in a large portion is larger than the coating amount per unit area in the temporary fastening region, but does not exceed 10 g / m ² . Each of the front waistline region and the rear waistline region includes a plurality of elastic members extending in a laterally extending state,
The peripheral portion of the inner member has both side edge portions that extend across the elastic member and both end edge portions that extend in parallel with the elastic member, and is formed outside the peripheral portion of the inner member. The application mode of the hot melt adhesive in the temporary fastening area is adjacent to at least one of the side edges and overlaps the elastic member in the thickness direction of the outer member, and at least one of the both end edges 6. The diaper according to claim 3, wherein the diaper is in at least one of the modes that are adjacent to each other and do not overlap the elastic member in the thickness direction of the outer member.   In the thickness direction of the outer member, the elastic member overlaps with each of the both side edges of the inner member in an extended state and either of the aspects overlaps with each of the both side edges in a non-extended state. The diaper according to claim 6.   A pull-up type disposable diaper in which the front waistline region and the rear waistline region are joined to each other at respective lateral side edges to form a waistline opening and a pair of leg hole openings, and the respective lateral directions The diaper according to any one of claims 1 to 7, wherein the diaper is an open-type disposable diaper that is worn while being separably connected to side edges.

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