JP5805234B2 - Disposable wearing items - Google Patents

Description

  The present invention relates to disposable wearing articles such as disposable diapers, training pants, and diaper covers.

  Conventionally, disposable wearing articles having a waist elastic body that can expand and contract around the waist are known. For example, in Patent Document 1, in at least one of the front and rear waist regions, an inner surface sheet positioned on the skin facing surface, an outer surface sheet positioned on the non-skin facing surface side, and a waist elastic body interposed between the inner and outer surface sheets, A disposable diaper including an illustration sheet having a design element visible from the outside is disclosed.

  In this disposable diaper, the waist elastic body is positioned on the surface facing the outer sheet of the illustration sheet and fixed through an adhesive means such as an adhesive, and cut or removed at the center of the waist region. Has been. In the central portion, a non-stretchable region where the contraction force of the waist elastic body is not substantially applied is formed.

JP 2012-179313 A (P2012-179313A)

  In the disposable diaper disclosed in Patent Document 1, the inner end portion of the waist elastic body is located on the surface facing the outer surface sheet of the illustration sheet, and there is no waist elastic body in the center portion. It can be confirmed from the outside that a non-stretchable region is formed.

  However, in the area where the waist elastic body exists, the outer sheet and the illustration sheet are joined to each other by the bonding means for fixing the waist elastic body. The sheet and the outer sheet are not joined to each other. For this reason, when the diaper is worn, the outer sheet is lifted so as to be separated from the illustration sheet, and the wear of the sheet is weak, and there is a possibility of giving an impression that the sheet is easily torn. In addition, since the outer sheet is separated from the illustration sheet (or the sheet facing it) and a space is formed between them, it is difficult to clearly see the decorative element located at the center of the illustration sheet from the outside. .

  Therefore, in the present invention, the outer sheet is fixed to the sheet located on the inner surface side in the non-stretchable region where the waist elastic body does not exist, and the illustration can be clearly seen from the outside, It is an object of the present invention to provide a disposable wearing article that can exhibit a required sheet strength in the region.

  In order to solve the above-mentioned problems, the first and second inventions of the present invention are intended to have a longitudinal direction and a lateral direction, one of a skin facing surface and a non-skin facing surface, and a front and back waist region. A first waist region, a second waist region which is the other of them, a crotch region located between the first and second waist regions, and an annular elastic waist panel forming the first and second waist regions And an absorbent chassis having an absorbent core attached to the elastic waist panel.

In the disposable wearing article according to the present invention, the feature of the first invention further includes a tape fastener attached to an outer surface of the first waist region, and the elastic waist panel is an outer surface located on the non-skin facing surface side. A seat, a waist elastic body that can be expanded and contracted in a direction around the waist, an inner surface sheet that is positioned on the skin-facing surface side of the waist elastic body, and an outside disposed between the waist elastic body and the inner surface sheet An illustration sheet having a visually identifiable decorative element, wherein the first waist region is disposed with the waist elastic body, and a pair of elastic regions spaced apart from each other in the lateral direction, and the waist elastic body is disposed. A non-stretchable region located between the stretchable regions, at least a part of the decorative element is located in the non-stretchable region, and the illustration sheet is Is disposed between the outer sheet in the non-stretchable zone and said inner sheet are bonded to each other via a joining means and said outer sheet, it said tape fasteners has a fixed portion fixed to the outer surface, The joining means is disposed so as to overlap at least the fixing portion in plan view, and the joining means is disposed only at a position overlapping the fixing portion of the tape fastener in plan view, and extends in the lateral direction. , Formed from a plurality of lines that are spaced apart by a given dimension in the longitudinal direction.

In the disposable wearing article according to the present invention, the feature of the second invention further includes a tape fastener attached to an outer surface of the first waist region, and the elastic waist panel is an outer surface located on the non-skin facing surface side. A seat, a waist elastic body that can be expanded and contracted in a direction around the waist, an inner surface sheet that is positioned on the skin-facing surface side of the waist elastic body, and an illustration sheet that has a decorative element visible from the outside, One waist region has a pair of stretch regions that are spaced apart from each other in the lateral direction, in which the waist elastic body is disposed, and a non-stretch region located between the stretch regions in which the waist elastic body is not disposed. and, wherein at least a portion of said decorative element is positioned on the non-stretchable zone, the illustration sheet is positioned on the absorbent chassis and opposite side of the front Symbol inner sheet, Are joined together with Kigaimen sheet and said inner sheet is via the joining means in the non-elasticized zone, the tape fasteners has a fixed portion fixed to the outer surface, said joining means at least the fixed part The joining means is disposed only at a position overlapping the fixing portion of the tape fastener in a plan view, and extends in the lateral direction, and has a given dimension in the longitudinal direction. It is formed from a plurality of lines that are spaced apart.

  According to the disposable wearing article according to one or more embodiments of the present invention, the first waist region which is one of the front and rear waist regions is a waist elastic body located between the pair of stretchable regions and between them. A non-existing non-stretchable region and an illustration sheet with a decorative element visible from the outside are located between the non-stretchable outer sheet and the inner sheet and joined to the outer sheet via a joining means Therefore, compared with the case where those sheets are not joined, the sheet strength in the non-stretchable region is improved and the visibility of the decorative element can be improved.

  According to the disposable wearing article according to one or more embodiments of the present invention, the first waist region which is one of the front and rear waist regions is a waist elastic body located between the pair of stretchable regions and between them. The non-existing non-stretchable region between the outer sheet and the inner sheet is located on the surface facing the absorption chassis of the inner sheet of the non-stretchable region. Since they are joined to each other via the joining means, the sheet strength in the non-stretchable region is improved and the visibility of the decorative element can be improved.

The drawings illustrate specific embodiments of the invention and include selective and preferred embodiments as well as the essential features of the invention.
The perspective view which looked at the wearing condition of the disposable diaper of a 1st embodiment shown as an example of the disposable wearing article concerning the present invention from the front. The partially broken perspective view which looked at the diaper of the wearing condition from the back side. The partially broken expanded view of a diaper in the state which extended each waist elastic body to the vertical direction and the horizontal direction of a diaper. The exploded perspective view of a diaper. The top view in the state which excluded a part of outer surface sheet in the front waist panel. The top view in the state which excluded a part of outer sheet | seat in the back waist panel. (A) Schematic sectional view taken along line VII-VII (a) in FIG. 5 (b) Schematic sectional view taken along line VII (b) in FIG. The top view similar to FIG. 6 in the example of a change of a diaper. The top view similar to FIG. 6 in the other modification of a diaper. The perspective view which looked at the wearing condition of the diaper from 2nd Embodiment in 2nd Embodiment. FIG. 11 is a schematic cross-sectional view taken along line XX in FIG. 10. The top view similar to FIG. 6 in the example of a change of the diaper of 2nd Embodiment. The top view similar to FIG. 6 of the diaper in 3rd Embodiment. The figure which shows a part of manufacturing method of the diaper in 3rd Embodiment. The expansion perspective view of a heat roll.

  Each embodiment described below relates to the diaper shown in FIGS. 1 to 15 and includes not only an indispensable structure of the invention but also a selective and preferable structure.

<First Embodiment>
1-4, the diaper 10 has the vertical direction Y and the horizontal direction X orthogonal to it, the skin opposing surface and the non-skin opposing surface which opposes it, and the cyclic | annular elastic waist panel 11 extended in the circumference direction of a waist. An absorption chassis 12 attached to the skin facing side of the elastic waist panel 11, a front waist region (first or second waist region) 13, a rear waist region (first or second waist region) 14, and front and rear And a crotch region 15 located between the waist regions 13 and 14.

  The elastic waist panel 11 has an elastic belt function, and includes a front waist panel 16 that forms part of the front waist region 13 and a rear waist panel 17 that forms part of the rear waist region 14. The front and rear waist panels 16, 17 include inner end edges 16a, 17a, outer end edges 16b, 17b, outer edges (both side edges of the front and rear waist regions) 16c, 17c extending inwardly from the outer end edges 16b, 17b, It has a substantially trapezoidal shape defined by inner edges 16d and 17d extending obliquely inward from the outer edges 16c and 17c. The outer edges 16c of the front waist panel 16 and the outer edges 17c of the rear waist panel 17 facing each other are overlapped with each other, and a known means such as hot embossing is used in the side seam 18 that is intermittently arranged in the longitudinal direction Y. The waist opening 19 and the pair of leg openings 20 are defined by various heat welding means such as Sonic.

The front and rear waist panels 16 and 17 include inner sheet 21 and 22 positioned on the skin facing surface side and outer sheet 23 and 24 positioned on the non-skin facing surface side, respectively. The inner and outer sheets 21-24 are SMS (spunbond / meltblown / spunbond) fiber nonwoven fabric, spunbond fiber nonwoven fabric or air-through fiber nonwoven fabric having a mass of about 15 to 30 g / m ² , or a plastic sheet, a perforated plastic sheet and Those laminate sheets can be used. Moreover, the outer surface sheets 23 and 24 have a total light transmittance such that a decorative element described later can be visually recognized from the outside.

Specifically, when the inner and outer surface sheets 21-24 are formed from an SMS fiber nonwoven fabric, a spunbond fiber nonwoven fabric or an air-through fiber nonwoven fabric having a mass of about 10 to 30 g / m ² , the total light transmittance is preferably 75% or more, preferably Is 83% or more. If the total light transmittance of each sheet is within this range, the decorative elements of the illustration sheets 39 and 40 described later can be easily visually recognized from the outside. The total light transmittance of each sheet is based on a known measuring method, and can be measured, for example, using a cross-light photometric color difference meter Z-300A manufactured by Nippon Denshoku Industries Co., Ltd.

  Between the inner and outer surface sheets 21-24 of the front and rear waist panels 16, 17, a plurality of string-like or strand-like front and rear waist elastic bodies 27, 28 are respectively disposed so as to be stretchable in the lateral direction X. The panels 16 and 17 are elasticized at least in the lateral direction X. The front and rear waist elastic bodies 27 and 28 are laterally extended between the front and rear upper waist elastic bodies 27A and 28A extending in the lateral direction X along the waist opening, and the front and rear upper waist elastic bodies 27A and 28A and the inner end edges 16a and 17a. It has front and back waist elastic bodies 27B and 28B extending to X. In the region where the front and rear lower waist elastic bodies 27B and 28B are disposed, front and rear stretch regions 30 and 31 are formed.

  The front and rear lower waist elastic bodies 27B and 28B are respectively arranged at outer ends 32 and 33 located at outer edges 16c and 17c of the front and rear waist regions 13 and 14 and inner ends facing the outer ends 32 and 33 in the lateral direction X, respectively. Front and rear non-stretchable regions 36 and 37 are defined which have end portions 34 and 35 and are partially cut and shrunk at the central portions of the front and rear waist regions 13 and 14. Thus, since the front and rear non-stretchable regions 36 and 37 are located at the center of the front and rear waist regions 13 and 14, the central portion of the absorbent chassis 12 (of the absorbent core 12) located on the inner surface of the front and rear waist panels 16 and 17 Since the contraction force of the front and back lower waist elastic bodies 27B and 28B is directly applied to the center portion and no gathers are formed, it is possible to suppress a decrease in absorption performance due to the contraction force acting.

  As a method of forming the front / rear non-stretchable regions 36, 37, for example, hot melt adhesive is applied to the inner surface of the portion where the front / rear lower waist elastic bodies 27B, 28B exist in at least one of the inner / outer surface sheets 21, 22, 23, 24. Applying in an appropriate pattern, a series of front and lower waist elastic bodies 27B and 28B are supplied under extension across these areas and fixed to the adhesive application area, and in that state, located in the front and rear non-stretchable areas 36 and 37. When the front / rear lower waist elastic bodies 27B, 28B are cut (only at one location), the front / rear lower waist elastic bodies 27B, 28B automatically contract (snap back). Accordingly, the front and rear lower waist elastic bodies 27B and 28B having contraction force are substantially absent in the front and rear non-stretchable regions 36 and 37. The whole or a part of the inner end portions 34, 35 of the front and rear lower waist elastic bodies 27B, 28B is a portion contracted by a snapback, and the outer surface sheets 23, 24 and the illustration sheets on both sides of the illustration sheets 39, 40. 39 and 40 are in an unfixed state, and contractility is not substantially expressed.

  As described above, in order to snap back the front and lower waist elastic bodies 27B and 28B, the joining means 50 and 51, which will be described later, have inner end portions 34 and 35 of the front and lower waist elastic bodies 27B and 28B that are spaced apart in the lateral direction X. Between imaginary lines (not shown) connecting each other, that is, the separated portions of the front and back lower waist elastic bodies 27B and 28B (between the inner ends 34 and 35 of the front and rear lower waist shredded bodies 27B and 28B facing each other in the lateral direction X) It is preferable that at least be arranged. When the joining means 50 and 51 are positioned so as to overlap with the front and rear lower waist elastic bodies 27B and 28B, the elastic bodies cannot be snapped back and the front and rear non-stretchable areas 36 and 37 may not be formed. There is.

  As the front and rear waist elastic bodies 27 and 28, for example, a string or strand shape having a thickness of about 470 to 1240 dtex and attached so as to be shrinkable in a state of being stretched about 1.5 to 3.5 times. Elastic materials can be used. Conditions such as the thickness of the front and rear waist elastic bodies 27, 28, the expansion ratio, and the separation dimension (pitch) between the elastic bodies can be changed as appropriate, but can be stably worn on the wearer's body. Furthermore, it is preferable to set the conditions of each elastic body so that the extension force of the stretchable region by the front and back upper waist elastic bodies 27A and 28A is larger than that of the stretchable region by the front and back lower waist elastic bodies 27B and 28B.

  On the skin facing surface side of the inner sheet 21 of the front waist panel 16, an illustration sheet 39 in which a decorative element 38 that is visible from the outside in a worn state is printed on the surface facing the inner sheet 21. Further, between the inner and outer surface sheets 22 and 24 of the rear waist panel 17 and between the rear waist elastic body 28 and the inner surface sheet 22, a surface facing the outer surface sheet 24 is visible from the outside in a worn state. An illustration sheet 40 on which decorative elements 41 are printed is arranged. The illustration sheets 39 and 40 are formed from a liquid-impervious fiber nonwoven fabric, a liquid-impervious and moisture-permeable plastic film, or a laminate sheet thereof. In the present embodiment, as an example of the decorative elements 38 and 41, a character pattern imitating an animal is shown. However, as long as the form can be grasped from the outside, various known figures, decorative patterns, patterns, and merchandise items are displayed. It may be a trademark or a manufacturer's notation.

  3 and 4, the absorbent chassis 12 includes front and rear end portions 12A and 12B attached to the front and rear waist panels 16 and 17, a liquid absorbent core 43 extending in the longitudinal direction Y at least in the crotch region 15, and a liquid absorbent. A top sheet 44 formed from a hydrophilic fiber nonwoven fabric located on the skin facing surface side of the conductive core 43 and a hydrophobic or hardly liquid-permeable fiber nonwoven fabric located on the non-skin facing surface side of the liquid absorbent core 43 A leakage-proof sheet disposed between the formed backsheet 45 and the liquid-absorbent core 43 and the backsheet 45 and covering at least the entire surface of the liquid-absorbent core 43 facing the backsheet 45. 46. For the top sheet 44 and the back sheet 45, various known fiber nonwoven fabrics such as an SMS fiber nonwoven fabric and a spunbond nonwoven fabric can be used.

  The liquid absorbent core 43 is a mixture of a required amount of superabsorbent polymer particles and fluff pulp, and has a semi-rigidity that is higher in rigidity than the sheet member constituting the diaper 10. Further, the liquid absorbent core 43 is in the form of a panel having a narrow central portion in the longitudinal direction Y, and the whole is encapsulated with a liquid diffusive sheet 47 such as a tissue. The top sheet 44 and the back sheet 45 extend outward from the peripheral edge portion of the liquid-absorbent core 43, and the extended portions are overlapped with each other and joined via a hot melt adhesive (not shown). Thus, side flaps extending outward in the lateral direction X from both side edges of the liquid absorbent core 43 and end flaps extending outward in the longitudinal direction Y from both end edges of the liquid absorbent core are formed. A leg elastic body 49 extending in the longitudinal direction Y is attached to each side flap so as to be retractable in an extended state.

  5 and 7A, in the front non-stretchable region 36 of the front waist panel 16, the inner surface of the outer sheet 23 and the inner surface of the inner sheet 21 are various known joining means 50 such as a hot melt adhesive. Are joined together. In the present embodiment, a hot melt adhesive having a coating pattern extending spirally in the lateral direction X is used as the joining means 50, but a known heat welding means such as sonic sealing or heat sealing processing may be used. it can. When a hot melt adhesive is used as the bonding means 50, various known coating patterns such as a line shape and a dot shape are used in addition to the spiral shape as shown in the drawing as long as the required bonding strength is obtained. be able to.

  Usually, in the front non-stretchable region where the front waist elastic body 27 does not exist, the front waist elastic body 27 is cut and contracted by forming a non-joined region of the inner and outer surface sheets 21 and 23 in the manufacturing process. Therefore, the inner and outer surface sheets 21 and 23 are separated from each other in the region. In such a case, when the diaper 10 is worn, the outer surface sheet 23 is lifted from the inner surface sheet 21 in the front non-stretchable region (non-bonded region) 36. Thus, the aspect in which the outer surface sheet 23 formed from the fiber nonwoven fabric sheet is lifted from the inner surface sheet 21 is likely to be torn and may give an impression of low strength, and the appearance of the diaper 10 as a whole. May be damaged.

  In the present embodiment, since the inner and outer surface sheets 21 and 23 are joined to each other via the joining means 50 in the front non-stretchable region 36, the outer sheet 23 is lifted from the inner surface sheet 21 and the appearance of the diaper 10 is impaired. It is not. In general, when the inner and outer sheets 21 and 23 of the front waist panel 16 are not joined in the front non-stretchable region 36, the outer sheet 23 is separated from each other and is in a state of being lifted from the inner sheet 21. In such a case, the outline of the decorative element 38 of the illustration sheet 39 is blurred, making it difficult to visually recognize from the outside. That is, when the outer sheet 23 is separated from the inner sheet 22, a gap is formed between them, and the light transmitted through the outer sheet 23 is reflected and diffused by the facing surface of the inner sheet 21, and is seen through from the sheets. The outline of the decorative element 38 to be made becomes difficult to see from the outside. In the present embodiment, since the inner and outer surface sheets 21 and 23 are joined to each other via the joining means 50 in the front non-stretchable region 36, the sheet is prevented from being lifted up, so that the inner side of the front waist panel 16 It is possible to prevent the outline of the decorative element 38 of the illustration sheet 39 located at the position from becoming difficult to see.

  Referring to FIGS. 6 and 7B, in the rear waist region 14, the inner surface of the outer surface sheet 24 and the facing surface of the outer surface sheet 24 of the illustration sheet 40 in the rear non-stretchable region 37 are joined by the joining means 51. Are joined together. Therefore, a gap that causes light scattering is not formed between the outer sheet 24 and the illustration sheet 40, and the outline of the decorative element 41 can be clearly recognized. The surface of the illustration sheet 40 facing the inner sheet 22 may be bonded by a bonding means such as a hot melt adhesive, or the surface facing the outer sheet 24 is bonded via the bonding means 51. As long as it is present, it may be non-joined.

  The rear lower waist elastic body 28B extends to both side portions of the illustration sheet 40, and the inner end portion 35 thereof overlaps both side portions in plan view. When the inner end portions 35 of the rear lower waist elastic body 28B are positioned on both sides of the illustration sheet 40, the contraction force acts on the portions. Accordingly, even when the illustration sheet 40 and the inner sheet 22 are not joined, the inner sheet 22 is brought into close contact with the body by the contraction force, so that both the sheets 22 and 40 are separated from each other or displaced. There is no risk of gathering.

  Further, in the front waist region 13, the inner end portions 34 of the front lower waist elastic body 27 </ b> B are positioned so as to overlap with both side edges of the front end portion 12 </ b> A of the absorption chassis 12 in plan view, and in the rear waist region 14, The inner end portion 35 of the rear lower waist elastic body 28B is positioned so as to overlap with both side edges of the rear end portion 12B of the absorption chassis 12 in plan view. The front / rear lower waist elastic bodies 27B and 28B do not necessarily have to be positioned so as to overlap with a part of the absorption chassis 12 in plan view. Can be kept in close contact with the wearer's body to suppress the displacement of the absorbent chassis 12 during wearing.

  As described above, in order to prevent the outer sheets 23, 24 from being lifted, the outer sheets 23, 24 are joined to the outer sheets 23, 24 via the joining means 50, 51 in the front / rear non-stretchable regions 36, 37 of the front / rear waist regions 13, 14. The sheet may be a sheet (illustration sheet 39, 40 or inner sheet 21, 22) positioned on the inner surface side thereof. In the present embodiment, the illustration sheet 39 is arranged on the inner surface side of the front waist panel 16 and the illustration sheet 40 is arranged in the rear waist panel 17, but the illustration sheet 39 is arranged in the front waist panel 16, An illustration sheet 40 may be disposed on the inner surface side of the rear waist panel 17. Further, the illustration sheets 39 and 40 may be arranged only in one of the front and rear waist regions 13 and 14.

<Example of change>
FIG. 8 shows an example of a modified example of the diaper 10. In the present embodiment, the rear waist region 14 is formed from an elastic sheet 58 that can expand and contract at least around the waist as a means for imparting elasticity thereto. Has been. That is, the rear stretchable region 31 is formed by the contraction force of the pair of elastic sheets 58, and the elastic sheet 58 is not disposed in the rear non-stretchable region 37 located between the rear stretchable regions 31. For the elastic sheet 58, an elastic fiber nonwoven fabric can be used, for example, a spunbond fiber nonwoven fabric, a melt blown fiber nonwoven fabric, a heat roll fiber nonwoven fabric, an SMS fiber nonwoven fabric, an airlaid fiber nonwoven fabric, and an air-through fiber nonwoven fabric, and a known fiber nonwoven fabric having elasticity. Can be formed singly or in combination.

<Other changes>
FIG. 9 shows an example of another modification of the diaper 10. In the present embodiment, the outer sheet 24 and the illustration sheet 40 are fixed in the rear waist region 14 and the rear non-stretchable region 37. The joining means 51 extends continuously in the lateral direction X between the outer edges 17c. Thus, by extending not only to the rear non-stretchable region 37 but also to the rear stretchable region 31, it can also function as a joining means between the outer sheet 24 and the inner sheet 22 in the rear stretchable region 31. Similarly, the joining means 50 may extend continuously in the lateral direction X between the outer edges 16c in the front waist region 13.

Second Embodiment
FIG. 10 is a perspective view of the diaper 10 in the second embodiment, and FIG. 11 is a schematic enlarged view taken along the line XX of FIG. 10. In the present modification, the central portion of the rear waist region 14 is shown. The tape fastener 60 that can be developed toward the waist opening 19 is disposed. The tape fastener 60 is a fiber nonwoven fabric, a plastic sheet, or a laminate sheet thereof, and is formed of a base sheet having a required sheet strength, and is folded into a Z-shaped cross section. The tape fastener 60 has a fixing portion 62 fixed to the outer surface of the outer sheet 24 via a fastener bonding region 61 made of a known bonding means such as a hot melt adhesive, and a free extension extending from the fixing portion 62 in the length direction of the tape. It has a part 63 and a gripping part 63 a located at the tip of the free part 63. The free part 63 is temporarily fixed by temporary fixing means 64 made of embossing or pressure-sensitive adhesive so as to maintain the bent state, and the tape fastener 60 as a whole by temporary fixing means 65 by hot embossing. The folded state is maintained. The tape fastener 60 is for use as a fastening means for disposal or size of a pants-type diaper, and may be arranged in parallel in the vertical direction Y or the horizontal direction X, or intersects them. You may arrange | position in the direction and may be arranged two or more.

  As described above, when the tape fastener 60 is disposed on the outer surface of the rear non-stretchable region 37, the outer sheet 24 and the sheet opposed thereto in the rear non-stretchable region 37 (in the case where the illustration sheet 40 is not disposed, the inner surface sheet). When 21 and 22) are not joined, the fixing portion 62 of the tape fastener 60 is joined to the single-layer outer sheets 23 and 24. Therefore, the tape fastener 60 is not stably joined and the tape fastener 60 is developed. In such a case, a part of the non-stretchable region where the fixing portion 62 is located may be broken. In the present embodiment, since the outer sheet 24 and the illustration sheet 40 facing the outer sheet 24 are joined to each other in the rear non-stretchable region 37, the region where the fixing portion 62 of the tape fastener 60 is located includes a plurality of sheets (at least the outer surface). Since the sheet 24 and the illustration sheet 40) are formed by being laminated, there is a possibility that a part of the rear non-stretchable area 37 may be torn carelessly when the tape fastener 60 is used or the like because of the required sheet strength. Absent.

  In the present embodiment, the joining means 51 is located only in a portion overlapping the fixing portion 62 of the tape fastener 60 in plan view, but may be disposed in the entire rear non-stretchable region 37. However, when the joining means 51 is located only in the portion overlapping the fixing portion 62 in plan view, the peel strength at the portion is increased by a smaller amount of adhesive material than in the case where the joining means 51 is located in the entire rear non-stretchable region 37. In addition, the visibility of the decorative element 41 can be improved, and the material cost can be reduced. Further, since a plurality of joining lines constituting the joining means 51 extend in the lateral direction so as to intersect with the tape fastener 60 extending in the longitudinal direction Y, it is difficult to form a vertical hook in the joining portion, and the fixing portion 62 Can be fixed stably. Further, the tape fastener 60 is pulled and developed toward the waist opening side of the diaper at the time of disposal, and is preferably positioned as close to the waist opening side as possible. In such a case, the outer end portion (waist portion of the fixing portion 62) The end on the opening side) is located in the stretchable region by the rear upper waist elastic body 28A. In the stretchable region, a plurality of wrinkles are likely to be formed on the outer surface sheet 24 due to the contraction action of the rear upper waist elastic body 28A. However, the bonding means 51 other than the adhesive applied to the outer periphery of the rear upper waist elastic body 28A. By joining the outer sheets 22 and 24, the generation of wrinkles is suppressed, and the outer surface of the outer sheet 24 is flattened so that the fixing portion 62 of the tape fastener 60 can be stably fixed.

<Example of change>
FIG. 12 is a view similar to FIG. 6 showing an example of a modified example of the diaper 10 of the second embodiment. Referring to FIG. 12, the joining means 51 in the rear non-stretchable region 37 of the rear waist region 14. Is disposed only in a region overlapping with the fastener joining region 61 of the tape fastener 60 in the thickness direction of the rear waist panel 17. In the rear non-stretchable region 37, the outer sheet 24 and the illustration sheet 40 are partially bonded to each other via the bonding means 51. Even in such a bonding mode, the outer sheet 24 is prevented from being lifted and the decorative element 41 The sheet strength at the fixing portion 62 of the tape fastener 60 can be improved, and the above-described problems can be avoided.

<Third Embodiment>
FIG. 13 is a partially cutaway plan view similar to FIG. 6 of the diaper 10 in the third embodiment. Referring to FIG. 13, a joining means (heat seal portion) 70 for fixing the outer sheet 24 and the illustration sheet 40 in the rear non-stretchable region 37 is formed by heat sealing. The outer surface sheet 24 is formed from a fiber nonwoven fabric containing thermoplastic fibers, and is joined to the illustration sheet 40 formed from a plastic film by heat fusion using a known welding means. A welded portion (seal portion) is formed at the joint portion. The joining means 70 only needs to be disposed at least in a part of the rear non-stretchable region 37, and is disposed only on both sides of the decorative element 41 in order to prevent the visibility of the decorative element 41 from being lowered by the joining means 70. May be.

  FIG. 14 shows a part of a process for continuously manufacturing the diaper 10 in the present embodiment, particularly a part of a process for manufacturing the elastic waist panel 11 of the diaper 10. Referring to FIG. 14, a first composite web 81 serving as a base material for a plurality of rear waist panels 17 and a second composite serving as a base material for a plurality of front waist panels 16 are located on a transport plate (not shown). The web 82 is conveyed in the machine direction MD in an extended state, and is pressed by the pair of cutting / joining rolls 83 in the cutting / joining step. The first and second composite webs 81 and 82 are respectively interposed between the first and second continuous sheets 84, 85, 86, and 87 serving as base materials for the inner and outer sheets 21, 22, 23, and 24, respectively. And first and second continuous elastic bodies 88 and 89 that serve as base materials for the front and rear waist elastic bodies 27 and 28, and the first and second continuous sheets 84, 85, 86, and 87 are first and second continuous sheets. They are joined to each other via an adhesive applied to the entire circumference of the elastic bodies 88 and 89 or an adhesive applied to the opposing surfaces of both sheets. The first and second continuous elastic bodies 88 and 89 are joined to both sheets via an adhesive applied to the entire circumference thereof, and the adhesive is intermittently arranged in the machine direction MD. It is not applied and has non-fixed parts that are not fixed to the sheets. An illustration sheet 40 having a decorative element (not shown) is disposed in a non-fixed portion of the second composite web. Each cutting / joining roll 83 is heated to such an extent that the following effects are obtained.

  FIG. 15 is a perspective view of the cutting / joining roll 83. An outer peripheral surface 83 a of the cutting / joining roll 83 has a processing region 90 that protrudes from the outer peripheral surface 83 a and comes into contact with the first and second composite webs 81 and 82. The processing region 90 includes sharp cutting processing portions 91 and elongated plate-shaped welding processing portions 92 that are alternately arranged in the axial direction (crossing direction CD). The shape and size of the cutting portion 91 and the welding portion 92, the dimensions protruding from the outer peripheral surface 83a, etc. are the area and shape of the non-fixed portions of the first and second composite webs 81 and 82, the first and second continuous portions. The elastic bodies 88 and 89 are appropriately adjusted according to the fineness, number, and separation size (pitch).

  Referring again to FIG. 14, the rotational speed of the cutting / joining roll 83 is such that the first and second composite webs are in phase with the fixed portions of the first and second composite webs 81 and 82 and the processing region 90. 81 and 82 are synchronized with the conveying speed. That is, when passing through the cutting / joining roll 83, the non-fixed portions of the first and second joining webs 81 and 82 are pressed in their processing region 90. At this time, the first and second continuous elastic bodies 88 and 89 are cut by the cutting portion 91 of the processing region 90, the elastic body of the non-fixed part snaps back, and there is no elastic body in the part, On the other hand, the welded portion 92 is pressed against the space between the first and second continuous elastic bodies 88 and 89, and the first and second continuous sheets 84 to 87 are heat-sealed to each other, and the seal portion ( Bonding means) 70 is formed. In this way, by pressing the processing area 90 of the cutting / joining roll 83 onto the first and second composite webs 81, 82, the cutting of the first and second continuous elastic bodies 88, 89 and the joining of the sheets are performed. As compared with the case where they are performed in separate steps, the manufacturing process becomes simpler, the production speed of the diaper can be increased, and the production cost can be reduced.

  The first and second composite webs 81 and 82 are pressed by the cutting / joining roll 83 and then cut so as to form leg openings, and the absorbent chassis 12 is transferred between them. The first composite web 81 has an illustration sheet 39 in which a decorative element (not shown) is located on the side facing the absorption chassis 12 before being pressed by the cutting and joining roll 83, and the illustration sheet of the second composite web 82. 40 to be opposed to each other in the cross direction CD. Then, after passing through various necessary steps, each diaper 10 is manufactured. In addition to this manufacturing method, various known manufacturing methods can be employed. For example, the first and second composite webs 81 and 82 are configured as a single composite web and intersected by a single cutting / joining roll. It is also possible to perform cutting and joining at the same time in the non-fixed portions (corresponding to the front and rear non-stretchable regions 36 and 37) that face each other in the direction CD.

  In addition to the materials described in the present specification, the members constituting the diaper 10 may be any known materials that are commonly used in this type of field, unless otherwise specified. Can do. Further, terms such as “first” and “second” used in the present specification are merely used to distinguish similar elements, positions, and the like.

The disclosure relating to the present invention described above can be organized into at least the following matters.
(1) A first waist region that is one of the front and rear waist regions having a longitudinal direction and a lateral direction, and a skin facing surface and a non-skin facing surface; a second waist region that is the other of the first waist region; And a crotch region located between the second waist regions, an annular elastic waist panel forming the first and second waist regions, and an absorbent chassis having a liquid-absorbing core attached to the elastic waist panel. Including disposable wearing articles,
A tape fastener attached to the outer surface of the first waist region;
The elastic waist panel includes an outer surface sheet positioned on the non-skin facing surface side, a waist elastic body that can be expanded and contracted in a direction around the waist, an inner surface sheet positioned on the skin facing surface side of the waist elastic body, and the waist An illustration sheet having a decorative element visible between the elastic body and the inner surface sheet,
The first waist region is a pair of stretchable regions that are spaced apart from each other in the lateral direction, in which the waist elastic body is disposed, and the non-stretchable region that is located between the stretchable regions in which the waist elastic body is not disposed. And at least a part of the decorative element is located in the non-stretchable region,
The illustration sheet is disposed between the outer sheet and the inner sheet in the non-stretchable region, and is joined to each other via the outer sheet and a joining means ,
The tape fastener has a fixing portion fixed to the outer surface, and the joining means is disposed so as to overlap at least the fixing portion in plan view,
The joining means is disposed only at a position overlapping the fixing portion of the tape fastener in a plan view, and formed from a plurality of lines extending in the lateral direction and spaced apart by a given dimension in the longitudinal direction. It is characterized by being.
(2) A first waist region that is one of the front and rear waist regions, which has a longitudinal direction and a lateral direction, and a skin facing surface and a non-skin facing surface; a second waist region that is the other of the first waist region; And a crotch region located between the second waist regions, an annular elastic waist panel forming the first and second waist regions, and an absorbent chassis having a liquid-absorbing core attached to the elastic waist panel. Including disposable wearing articles,
A tape fastener attached to the outer surface of the first waist region;
The elastic waist panel includes an outer sheet positioned on the non-skin facing surface side, a waist elastic body that can be expanded and contracted in a direction around the waist, an inner sheet positioned on the skin facing surface side of the waist elastic body, and from the outside. An illustration sheet having a decorative element that is visible,
The first waist region is a pair of stretchable regions that are spaced apart from each other in the lateral direction, in which the waist elastic body is disposed, and the non-stretchable region that is located between the stretchable regions in which the waist elastic body is not disposed. And at least a part of the decorative element is located in the non-stretchable region,
The illustration sheet is positioned on the absorbent chassis and opposite side of the front Symbol inner sheet is joined together with the outer sheet and the inner sheet is via the joining means in the non-elasticized zone,
The tape fastener has a fixing portion fixed to the outer surface, and the joining means is disposed so as to overlap at least the fixing portion in plan view,
The joining means is disposed only at a position overlapping the fixing portion of the tape fastener in a plan view, and formed from a plurality of lines extending in the lateral direction and spaced apart by a given dimension in the longitudinal direction. It is characterized by being.

The present invention disclosed in the above paragraph 0047 can include at least the following embodiments. The embodiments can be adopted separately or in combination with each other.
(1) The waist elastic body is formed of a string-like or strand-like elastic material, and the joining means is disposed at least in the longitudinal direction between the waist elastic bodies in the non-stretchable region. .
(2) The waist elastic body has an outer end portion located at both side edges of the first waist region, and an inner end portion facing the outer end portion in the lateral direction, and the inner end portion is The two sides of the illustration sheet are positioned so as to overlap with each other in plan view, and the both sides of the liquid absorbent core are overlapped with each other in plan view.
(3) It further has a tape fastener attached to the outer surface of the first waist region, the tape fastener has a fixing portion fixed to the outer surface, and the joining means overlaps at least the fixing portion in plan view. Are arranged as follows.
(4) The joining means is disposed only at a position overlapping the fixing portion of the tape fastener in a plan view, and extends in the lateral direction, and is arranged in a plurality of strips spaced apart by a given dimension in the longitudinal direction. Formed from lines.
(5) The outer end portion of the fixed portion is located in the stretchable region, and the joining means is disposed in a portion overlapping the outer end portion in the stretchable region in plan view.

10 Disposable wearing articles (disposable diapers)
DESCRIPTION OF SYMBOLS 11 Elastic waist panel 12 Absorption chassis 13 Front waist area 14 Rear waist area 15 Crotch area 16 Front waist panel 16c Side edge 17 of a front waist area Rear waist panel 17c Side edge 21,22 of a rear waist area Inner surface sheet (inner sheet)
23, 24 Outer sheet (outer sheet)
27 Front waist elastic body (Waist elastic body)
27B Front lower waist elastic body (Waist elastic body)
28 Rear waist elastic body 28B Rear lower waist elastic body (waist elastic body)
30 Front stretchable region 31 Rear stretchable region 32, 33 Outer end portion 34, 35 of front and rear waist elastic body 36 Inner end portion of front and rear waist elastic body 36 Front non-stretchable region 37 Rear non-stretchable region 38 Decorative element 39 Illustration sheet (inner sheet)
40 Illustration sheet (inner sheet)
41 Decoration element 50, 51, 70 Joining means (seal part)
60 Tape fastener 62 Tape fastener fixing portion 84, 85 First continuous sheet 86, 87 Second continuous sheet 83 Cutting / joining roll 90 Processing region 91 Cutting processing portion 92 Welding processing portion

Claims (5)

A first waist region that is one of the front and rear waist regions, a second waist region that is the other of the front and rear waist regions, and the first and the second. A crotch region located between the second waist regions, an annular elastic waist panel forming the first and second waist regions, and an absorbent chassis having a liquid-absorbing core attached to the elastic waist panel. In disposable wearing articles,
A tape fastener attached to the outer surface of the first waist region;
The elastic waist panel includes an outer surface sheet positioned on the non-skin facing surface side, a waist elastic body that can be expanded and contracted in a direction around the waist, an inner surface sheet positioned on the skin facing surface side of the waist elastic body, and the waist An illustration sheet having a decorative element visible between the elastic body and the inner surface sheet,
The first waist region is a pair of stretchable regions that are spaced apart from each other in the lateral direction, in which the waist elastic body is disposed, and the non-stretchable region that is located between the stretchable regions in which the waist elastic body is not disposed. And at least a part of the decorative element is located in the non-stretchable region,
The illustration sheet is disposed between the outer sheet and the inner sheet in the non-stretchable region, and is joined to each other via the outer sheet and a joining means ,
The tape fastener has a fixing portion fixed to the outer surface, and the joining means is disposed so as to overlap at least the fixing portion in plan view,
The joining means is disposed only at a position overlapping the fixing portion of the tape fastener in a plan view, and formed from a plurality of lines extending in the lateral direction and spaced apart by a given dimension in the longitudinal direction. The said wearing article characterized by the above-mentioned. A first waist region that is one of the front and rear waist regions, a second waist region that is the other of the front and rear waist regions, and the first and the second. A crotch region located between the second waist regions, an annular elastic waist panel forming the first and second waist regions, and an absorbent chassis having a liquid-absorbing core attached to the elastic waist panel. In disposable wearing articles,
A tape fastener attached to the outer surface of the first waist region;
The elastic waist panel includes an outer sheet positioned on the non-skin facing surface side, a waist elastic body that can be expanded and contracted in a direction around the waist, an inner sheet positioned on the skin facing surface side of the waist elastic body, and from the outside. An illustration sheet having a decorative element that is visible,
The first waist region is a pair of stretchable regions that are spaced apart from each other in the lateral direction, in which the waist elastic body is disposed, and the non-stretchable region that is located between the stretchable regions in which the waist elastic body is not disposed. And at least a part of the decorative element is located in the non-stretchable region,
The illustration sheet is positioned on the absorbent chassis and opposite side of the front Symbol inner sheet is joined together with the outer sheet and the inner sheet is via the joining means in the non-elasticized zone,
The tape fastener has a fixing portion fixed to the outer surface, and the joining means is disposed so as to overlap at least the fixing portion in plan view,
The joining means is disposed only at a position overlapping the fixing portion of the tape fastener in a plan view, and formed from a plurality of lines extending in the lateral direction and spaced apart by a given dimension in the longitudinal direction. The said wearing article characterized by the above-mentioned.   The waist elastic body is formed of a string-like or strand-like elastic material, and the joining means is disposed at least in the longitudinal direction between the waist elastic bodies in the non-stretchable region. 3. The wearing article according to 1 or 2.   The waist elastic body has an outer end portion located on both side edges of the first waist region, and an inner end portion facing the outer end portion in the lateral direction, and the inner end portion of the illustration sheet The wearing article according to any one of claims 1 to 3, wherein the wearing article is positioned so as to overlap with both sides in a plan view and overlaps with both sides of the liquid-absorbent core in a plan view. And the outer end portion positioned in the elasticized zone in the longitudinal direction of the fixing part, any of claims 1 to 4, wherein the joining means is arranged to overlap at the outer end portion in plan view in the elasticized zone The wearing article according to crab.