JP3211442U - Pants-type wearing items - Google Patents

Abstract

[PROBLEMS] To provide a pants-type wearing article that can be adjusted in size and can prevent side leakage of body fluids. A wearing article includes size adjusting means positioned in one of the front and rear waist areas, and the size adjusting means is fixed to a non-skin facing surface side of a chassis, It includes a fixed portion 53 positioned on the center side in the lateral direction of the waist region and a pair of free portions 54 positioned on the outer side of the fixed portion in the lateral direction. A fastening area 56 and an elastic part 58 which is located between the fixing part and the fastening area and can be elastically expanded and contracted. [Selection] Figure 1

Description

  The present invention relates to a pants-type wearing article, and more particularly, to a pants-type wearing article such as disposable incontinence pants, disposable toilet training pants, disposable diapers and the like including a size-adjustable means.

  Conventionally, a pants-type wearing article including a size adjusting means for adjusting a waist dimension or the like is known. For example, in Patent Document 1, in a pant-type wearing article, a fixed part fixed to a waist region of a pant-type chassis, and a free part having a fixing region that can be fixed to a non-skin facing surface of the chassis. A wearing article comprising an elastically non-stretchable size adjusting means is disclosed.

Japanese Patent Laid-Open No. 2008-80026

  In the wearing article disclosed in Patent Document 1, the elongation stress of the waist opening and the leg opening is set to be relatively low, and the wearer inserts the leg by easily expanding the leg opening and the waist opening at the time of wearing. And after wearing, the waist adjustment of the worn article can be narrowed by the size adjusting means to fit the wearer's body. However, the extensional stress of the opening is set low, and the chassis is shrunk in the portion where the length is adjusted by the size adjusting means, and the contraction force of the opening is further reduced. For this reason, for example, when the posture of the wearer is changed as in the standing state and the lying state, a gap that causes leakage of body fluid is easily generated between the body and the opening. In particular, in the lying state, it can be said that a gap is easily formed between the worn article and the wearer's buttocks.

  Accordingly, an object of the present invention is to provide a pants-type wearing article that is an improvement of the conventional technique and can be adjusted in size and can prevent side leakage of body fluid.

  In order to achieve the above-mentioned problems, the present invention targets the vertical direction and the horizontal direction, the skin facing surface and the non-skin facing surface located on the opposite side, the front waist region, the rear waist region, A chassis having a crotch region located between the front and rear waist regions, a size adjusting means located in either one of the front and rear waist regions, and a seam portion connecting both side edges of the front and rear waist regions A pants-type wearing article having a waist opening and a pair of leg openings defined by.

  The present invention provides the above-mentioned wearing article, wherein the size adjusting means is fixed to the non-skin facing surface side of the chassis, and is positioned on the central side in the lateral direction of the one waist region, and the fixing A pair of free parts located on the outside in the lateral direction of the part, the free part is a fastening area that can be fastened to the non-skin facing surface of the chassis, and the fixing part and the fastening area It has an elastic part which is located between and elastically expands and contracts.

  According to the pants-type wearing article according to the present invention, the size of the wearing article can be adjusted by the size adjusting means including the fixing part and the pair of free parts having the fastening area. In addition, the pair of free parts are located outside the fixed part in the lateral direction and have an elastic part that can elastically expand and contract between the fixed part and the fastening part. The opening portion can be fitted to the wearer by the contraction force of the elastic portion. Furthermore, even if the wearer is lying down, the pair of elastic portions can be fitted to the wearer's buttocks in a state where the center portion of the chassis is pulled and expanded in the lateral direction, thereby preventing side leakage of bodily fluids. be able to.

The drawings illustrate specific embodiments of the present invention and include selective and preferred embodiments as well as essential configurations of the invention.
The front view of the underpants type disposable diaper shown as an example of the underpants type wearing article concerning the present invention. The expansion | deployment top view of the diaper extended to the vertical direction and the horizontal direction until the maximum expansion | extension of each elastic body (to the extent that the gathers by the contraction effect | action of an elastic material are lost). The partially broken disassembled perspective view of a diaper. The partially broken partial enlarged view which looked at the area | region enclosed with the dashed-dotted line IV shown in FIG. 2 from the back surface side. Typical sectional drawing which follows the VV line of FIG. (A) The figure which shows the mode of the wearing condition of the diaper before size adjustment by a size adjustment means. (B) The figure which shows the mode of the use condition of a size adjustment means. The figure which shows a part of manufacturing process of a diaper. The figure similar to FIG. 4 which shows other embodiment of a diaper. FIG. 9 is a schematic cross-sectional view taken along line IX-IX in FIG. 8. The front view which shows other embodiment of a diaper.

<First Embodiment>
The following embodiment relates to a pants-type wearing article shown in FIGS. 1 to 6 and includes not only an indispensable structure of the device but also a selective and preferable structure. 2, 4 and 5, each elastic body to be described later is in a state of being stretched to such an extent that gathers due to the contracting force in the horizontal direction X and the vertical direction Y are eliminated against the contracting force.

  1-3, the underpants type disposable diaper 10 which is an example of the underpants type wearing article which concerns on 1st Embodiment of this invention is the vertical centerline P which bisects the width dimension, and its length. A skin-facing surface and a non-skin-facing surface located on the opposite side of the skin, having a lateral center line Q that bisects the dimensions, a longitudinal direction Y along the longitudinal center line P, and a lateral direction X along the lateral center line Q And a size adjustment band (size adjustment means) 12 disposed on the non-skin facing surface of the chassis 11.

<Chassis>
The chassis 11 is formed symmetrically with respect to the longitudinal center line P, has a front waist region 13, a rear waist region 14, and a crotch region 15 located between the front and rear waist regions 13, 14. An annular elastic waist panel extending in the direction around the waist that defines 13, 14 and a liquid-absorbing panel 17 extending from the crotch region 15 to the front and rear waist regions 13, 14, and attached to the skin-facing surface side of the elastic waist panel including. In the present embodiment, the size adjustment band 12 is disposed in the front waist region 13 of the chassis 11. However, as long as the effects of the present invention described later are exhibited, the rear waist region 14 may be disposed instead of the front waist region 13.

<Elastic waist panel>
Referring to FIG. 2, the elastic waist panel includes a front waist panel 18 located in the front waist region 13 and a rear waist panel 19 located in the rear waist region 14. The front and rear waist panels 18 and 19 intersect with the front and rear end portions 17A and 17B of the liquid-absorbing panel 17 and extend in the lateral direction X, and the intermediate inner end edges 18a and 19a in the longitudinal direction Y. Outer edges 18b and 19b extending in the lateral direction X in a spaced-apart manner, both outer edges 18c and 19c extending in the longitudinal direction Y from the outer edges 18b and 19b, both outer edges 18c and 19c, and an intermediate inner edge 18a, It is formed in a substantially trapezoid shape by the concave curved inner edges 18d and 19d connecting 19a. The front and rear waist panels 18 and 19 have center portions 20A and 21A where the liquid-absorbing panel 17 is disposed in the lateral direction X, and both side portions 20B and 21B located outside the lateral direction X of the liquid-absorbing panel 17, respectively. Have. Both outer edges 18c of the front waist panel 18 and both outer edges 19c of the rear waist panel 19 are overlapped with each other and connected by a seam portion 22 that intermittently extends in the longitudinal direction Y, thereby forming a waist opening 23 and a pair of pairs. A leg opening 24 is defined. In the seam portion 22, the overlapping sheets are fused by embossing with heat or ultrasonic waves. In the present embodiment, the front and rear waist regions 13, 14 are connected to both side edges by seam portions 22.

  Referring to FIG. 3, the front and rear waist panels 18 and 19 include inner layer sheets 30 and 31 positioned on the skin facing surface side, outer layer sheets 32 and 33 positioned on the clothing facing surface side, and a plurality of strips extending in the lateral direction X. Front and rear waist elastic bodies 34, 35 formed of a string-like or strand-like elastic material and attached so as to be shrinkable in a stretched state between the inner and outer layer sheets 30, 31, 32, 33 via a hot melt adhesive. The rear waist panel 19 further includes a buttocks elastic body 36. The buttocks elastic body 36 is formed of a plurality of string-like or strand-like elastic materials extending from the rear waist region 14 to the crotch region 15 along the leg opening edge, and the inner and outer layer sheets 30, 31, 32, 33. It is attached in a stretched state via a hot melt adhesive so as to be capable of contracting.

  Referring to FIG. 2, the front waist panel 18 includes a front upper waist elastic region 37 </ b> A that extends in the lateral direction X on the waist opening edge side, and a front lower waist elastic region that extends in the horizontal direction X on the crotch region 15 side of the front waist region 13. First waist elastic region) 37B. The front upper waist elastic region 37 </ b> A is located on the outer side in the longitudinal direction Y of the liquid-absorbent panel 17, and a plurality of front waist elastic bodies 34 extending continuously between both outer edges 18 c are arranged. The plurality of front waist elastic bodies 34 disposed in the front lower waist elastic region 37B overlaps the liquid absorbent panel 17 in the lateral direction X, and overlaps the liquid absorbent panel 17 in a plan view. An inelastic region in which 34 is not disposed is formed.

  The rear waist panel 19 includes a rear upper waist elastic region 38A extending in the lateral direction X on the waist opening edge side, and a rear lower waist elastic region (second waist elastic region) extending in the horizontal direction X on the crotch region 15 side of the rear waist region 14. 38B and a buttocks elastic region 38C located in the crotch region 15. The rear upper waist elastic region 38 </ b> A is positioned on the outer side in the longitudinal direction Y of the liquid-absorbent panel 17, and a plurality of rear waist elastic bodies 35 extending continuously between both outer edges 19 c are disposed. In the rear lower waist elastic region 38 </ b> B, a plurality of rear waist elastic bodies 35 and a plurality of rib elastic bodies 36 located in the rear waist region 14 are arranged. The rear waist elastic body 35 disposed in the rear lower waist elastic region 38B overlaps the liquid absorbent panel 17 in the lateral direction X, and the rear waist elastic body 35 is disposed at a portion overlapping the liquid absorbent panel 17 in plan view. A non-elastic region is formed. The buttocks elastic region 38C is located in the crotch region 15, and a plurality of buttocks elastic bodies 36 are disposed. In a portion where the liquid-absorbing panel 17 overlaps in a plan view, an inelastic region where the buttocks elastic body 36 is not disposed is present. It is formed. The inelastic regions located in the front and rear waist regions 13 and 14 are substantially free from contraction force in addition to the fact that the waist elastic bodies constituting the elastic regions located on both sides thereof are cut or removed. Including a case where a part is arranged in such a manner.

Various sheets constituting the front and rear waist panels 18 and 19, i.e., inner and outer layer sheets 30, 31, 32, 33, the mass of about 15 to 30 g / ^{m 2} hydrophobic spunbond nonwoven or SMS (spunbond meltblown Spunbond) can be formed from a fiber cloth, a plastic film, or a laminate sheet with at least one of these nonwoven fabrics. The sheets laminated on each other are joined by a known joining means known as a hot melt adhesive applied intermittently to at least one of the inner surfaces.

  The front and rear waist elastic bodies 34 and 35 and the buttocks elastic body 36 have a fineness of about 350 to 1250 dtex, and have a string shape or a strand shape that is extended about 1.8 to 3.5 times from a contracted or relaxed state. It can be formed from an elastic material. However, the fineness and expansion ratio of each elastic body can be changed as appropriate according to the required contraction force and elongation stress. By arranging the front and rear waist elastic bodies 34 and 35 in the front and rear waist regions 13 and 14, a plurality of gathers 40 are formed on the outer surface thereof and are gathered as a whole.

<Liquid absorbing panel>
Referring to FIG. 2, the liquid-absorbent panel 17 has a vertically long and substantially rectangular shape, and is connected to the front end portion 17 </ b> A connected to the skin facing surface of the front waist panel 18 and the skin facing surface of the rear waist panel 19. The rear end portion 17B and an intermediate portion 17C extending in the longitudinal direction Y between the front and rear end portions 17A and 17B and forming a part of the crotch region 15 are provided.

2 and 3, the liquid-absorbing panel 17 includes a liquid-absorbing structure 41 having a liquid-permeable body-side liner 47 and an absorbent body coated on the body-side liner 47, and a clothing-facing surface side of the absorbent body. And a hydrophobic covering sheet 42 located on the surface. The body side liner 47 can be formed from, for example, a spunbond nonwoven fabric, an SMS fiber nonwoven fabric or the like having a mass of about 15 to 25 g / m ² and subjected to a hydrophilic treatment. The absorbent body has a liquid absorbent core 48 formed of an absorbent / discrete material such as fluff wood pulp and super absorbent polymer particles, and a mass of about 10 to 20 g / m ² covering the entire liquid absorbent core 48. A liquid-permeable core wrap sheet (not shown) formed from tissue paper or the like. The covering sheet 42 is formed from a hydrophobic SMS fiber nonwoven fabric or a spunbond nonwoven fabric having a mass of about 10 to 20 g / m ² . Between the covering sheet 42 and the liquid absorbing structure 41, a leak-proof sheet 43 formed of a plastic film having a gas permeability of about 10 to 25 g / m ² is disposed. Both side portions of the liquid absorption structure 41 are bent inward, and a plurality of strand-like or string-like leg elastic bodies 44 extending in the longitudinal direction Y are attached so as to be contractible in an extended state.

  Both side portions of the covering sheet 42 are bent inward, and front and rear end portions thereof are fixed on the liquid absorbing structure 41 via the joint portions 45. On both sides, a string or strand of multiple strands extending in the longitudinal direction Y and having a fineness of about 400 to 800 dtex and extending about 2.0 to 3.0 times from a contracted or relaxed state A cuff elastic body 46 formed of an elastic material is disposed. In the wearing state of the diaper 10, both side portions form a barrier cuff that stands up toward the wearer's body by the contraction action of the cuff elastic body 46.

<Size adjustment band>
Referring to FIGS. 1 and 3 to 5, the size adjustment band 12 includes an inner surface 51 facing the non-skin facing surface of the chassis 11 and an outer surface 52 on the opposite side, a length direction R and a width direction S orthogonal to each other. A substantially rectangular strip defined by a pair of outer end edges 12a, 12b facing each other in the length direction R and both side edges 12c, 12d extending along the length direction R between the outer end edges 12a, 12b. Have. The size adjustment band 12 is fixed to the non-skin facing surface of the chassis 11 through the joint 60 in the central portion 20A of the front waist region 13, and extends from the fixing portion 53 to the outer end edges 12a and 12b. And a pair of free portions 54. The size adjustment band 12 is formed symmetrically with respect to the vertical axis P. In FIGS. 4 and 5, only the fixed portion 53 and the free portion 54 located on one side in the lateral direction X of the size adjustment band 12 will be described. However, the fixed portion 53 and the free portion 54 located on the other side also have the same configuration. In the present embodiment, the fixing portion 53 is composed of a continuous sheet member that connects the pair of free portions 54. For example, the sheet member that forms the size adjustment band 12 is separated at the central portion 20A, The configuration may include a pair of fixed portion 53 and free portion 54 that are separated in the direction X.

  The free portion 54 is connected to the fixed portion 53 and can elastically extend and contract in the length direction R (lateral direction X in the present embodiment), and from the elastic portion 58 to the outer edge 12a, 12b side. And a gripping portion 57 (outer end portion 54a) extending to the bottom. The elastic part 58 may be configured such that at least a part thereof can be elastically expanded and contracted between the fixing part 53 and the gripping part 57, and the entire part may not elastically expand and contract. The fixed part 53 and the free part 54 are attached to the belt-like sheet 64 and elastically attached to the belt-like sheet 64, which is formed of one or more sheet members that extend in series in the length direction R to form the outer shape of the size adjustment band 12. A band elastic body 63 that imparts elasticity to the portion 58; In the present embodiment, the belt-like sheet 64 includes an inner sheet 61 that faces the non-skin facing surface of the chassis 11 and an outer sheet 62 that faces the outer surface of the inner sheet 61. 62 is joined via a hot-melt adhesive (not shown) applied to either one of the surfaces facing each other. In the present embodiment, the “elastic portion 58” means a region where the band elastic body 63 is disposed, and does not mean a region where the contraction force acts. Therefore, both side edges of the elastic portion 58 are positioned inwardly than the both side edges 12c and 12d of the size adjustment band 12, and the width dimension W3 of the elastic portion 58 is smaller than the width dimension W2 of the size adjustment band 12. ing.

The inner and outer surface sheets 61 and 62 constituting the belt-like sheet 64 are known fiber nonwoven fabrics, for example, spunbond fiber nonwoven fabrics and SMS fiber nonwoven fabrics having a mass of about 10 to 40 g / m ² , preferably about 15 to 30 g / m ^2. And air-through fiber nonwoven fabric. The band elastic body 63 extends in the length direction R, has a fineness of about 400 to 1200 dtex, and a plurality of strings or strands extended about 1.5 to 3.0 times from a contracted or relaxed state. Made of elastic material. However, the fineness and expansion ratio of each elastic body can be changed as appropriate according to the required contraction force and elongation stress. In the present embodiment, the band elastic body 63 is disposed in a manner that does not substantially develop a contracting force in a part of the fixed portion 53, and the band elastic body 63 is substantially at the outer end portion 54 a of the free portion 54. It arrange | positions in the aspect which does not express contraction force, and the outer end part 54a has inelasticity. The band elastic body 63 may be configured not to be disposed on the fixed portion 53 or the outer end portion 54a. Further, the band elastic body 63 may be formed of a band-shaped elastic sheet, or the band-shaped sheet 64 may be formed of an elastic sheet, and the fixing portion 53 and the holding portion 57 may be inelasticized.

  A tab sheet 57a formed of a relatively high-strength non-woven fabric or plastic film is disposed on the belt-like sheet 64 in the gripping portion 57, and on the outer surface of the tab sheet 57a (surface facing the front waist region 13). A fastening area 56 is arranged. The tab sheet 57a can be colored so that the gripping portion 57 can be distinguished from other regions. The fastening area 56 is a hook group of mechanical fasteners that can be fastened to outer layer sheets 32 and 33 that form the outer surfaces of the front and rear waist areas 13 and 14, or receiving portions (loop groups of mechanical fasteners) disposed on the outer surfaces thereof. Have The fastening area 56 can be formed from a pressure sensitive adhesive in addition to the hooks of the mechanical fastener.

  The length dimension (dimension in the lateral direction X) L1 of the size adjustment band 12 is about 500 to 600 mm, and is formed substantially equal to the dimension W1 in the lateral direction X in the front waist region 13 of the chassis 11. Further, the width dimension (dimension in the vertical direction Y) L2 of the front waist region 13 is about 150 to 250 mm, and the width dimension (dimension in the vertical direction Y) W2 of the size adjustment band 12 is about 20 to 100 mm. In addition, the length dimension L1 of the size adjustment band 12 can be longer or shorter than the dimension W1 of the chassis 11.

  Referring to FIG. 4, the fastening region 56 extends in the longitudinal direction Y between both side edges 12 c and 12 d of the size adjustment band 12, and the width dimension thereof is the same as the width dimension W <b> 2 of the size adjustment band 12. Therefore, the width dimension of the fastening region 56 is larger than the width dimension W3 of the elastic part 58 positioned inwardly from the both side edges 12c and 12d, and both end edges 56a and 56b are both side edges 58a of the elastic part 58. , 58b is located outside the width direction S. As described above, the both end edges 56a and 56b of the fastening region 56 are positioned outside the width direction S with respect to the both side edges 58a and 58b of the elastic portion 58, whereby the both side edges 12c and It is possible to suppress the 12d from being rolled up by the contracting action of the elastic portion 58.

  The fastening region 56 is preferably fastened to the non-skin facing surface of the chassis 11 forming the front waist region 13 in a state where the diaper 10 is taken out of the package. Further, during the manufacturing process of the diaper 10, the portion where the fastening area 56 or the gripping portion 57 is located may be temporarily fixed to the non-skin facing surface of the chassis 11 in advance by heat sealing or the like. Referring to FIG. 5, the diaper 10 is temporarily fixed to the chassis 11 via a joint portion 59 at a gripping portion 57. By fastening or temporarily fastening the fastening area 56 and the gripping part 57 in this manner, there is a possibility that the fastening area 56 may touch the wearer's body and give a stimulus when the size adjustment band 12 is not used. In addition, it is possible to prevent the size adjustment band 12 from dripping during conveyance of the diaper 10. In addition, since the tab sheet 57a having a relatively high rigidity is disposed in the gripping portion 57, it is easy to operate when gripping the gripping portion 57, and the operability compared with the case where the tab sheet 57a is not disposed. Excellent. Furthermore, since the band elastic body 63 is disposed in the outer end portion 54a of the free portion 54 in a state that does not substantially develop the contraction force, the gripping portion 57 has inelasticity. Therefore, in a state where the size adjusting band 12 is pulled and the fastening region 56 is fastened to the outer surface of the rear waist region 14 or the crotch region 15, the contracting force of the band elastic body 63 on the fastening region 56, that is, the fastening region 56. The force (force toward the front) that peels off the film does not act directly, and is stably fixed as compared with the case where the gripping part 57 has elasticity.

  Referring to FIGS. 6 (a) and 6 (b), for example, when the wearer is slender and the circumference of the wearer and / or the circumference of the leg is slightly smaller than the corresponding dimensions of the diaper 10, the size adjustment is performed. When using the band 12, first insert a finger between the side edge of the diaper 10 and the outer end edges 12a and 12b of the size adjustment band 12 to grasp the gripping part 57 and release the fastening by the fastening area 56. As shown, the diaper 10 is pulled outward (see the phantom line in FIG. 5). Next, the gripping portion 57 is held and pulled, that is, the elastic portion 58 is maintained in the extended state, and the fastening region 56 is moved toward the rear waist region 14 (or the crotch region 15). Pull to secure it to the outer surface. Thus, when the size adjustment band 12 is pulled rearward, the front end portion of the liquid-absorbent core 48 where the fixing portion 53 is located is pulled rearward, and both side portions 20B of the front waist region 13 are contracted. That is, since the fastening region 56 is fastened to the rear waist region 14 with the liquid absorbing core 48 having a relatively high rigidity being pulled rearward, a part of the both side portions 20B having a relatively weak stiffness is formed. The dimensions in the lateral direction X are reduced by gathering. As a result, the size of the diaper 10 around the waist is reduced, so that the diaper 10 fits around the waist of a small wearer. Further, by pulling the size adjustment band 12 and fixing the elastic portion 58 to the rear waist region 14 in a state where the elastic force of the elastic portion 58 is effective, the central portion 20A where the liquid absorbent core 48 is located is pulled backward with a strong force. The body can be stably fitted.

  In addition, since the size adjustment band 12 is disposed on the crotch region 15 side of the front waist region 13, the center portion 20 </ b> A where the liquid absorbent core 48 is positioned is drawn backward, whereby the leg opening 24. The dimensions are also reduced to fit the wearer's body.

  In such a state, when the free part of the size adjustment band does not have elasticity, when the posture of the wearer is changed, the fastening by the fastening area is released and the waist opening edge or the leg opening edge There is a possibility that body fluid leaks from the leg opening, particularly when the wearer is in a lying position. In the diaper 10 according to the present invention, since the free portion 54 of the size adjustment band 12 has elasticity, the force or size adjustment band 12 that is intended to release the fastening due to the fastening region 56 caused by a change in the posture of the wearer. It absorbs the force to deform itself (a force that causes twisting or bending), and can maintain the state in which the opening edge is fitted to the body even if the posture changes during wearing. In addition, the elastic portion 58 is positioned in a relatively wide range of the free portion 54, so that the fit of the diaper 10 to the body is achieved in cooperation with the front lower waist elastic region 37B and the rear lower waist elastic region 38B. Can be improved.

  In addition, the fixing portions 53 of the size adjustment band 12 are positioned on both side edges of the liquid absorbent core 48, and both side edges of the liquid absorption core 48 are pressed against the body when the size adjustment band 12 is pulled rearward. Since it is expanded in the lateral direction X as it is, even if a gather that lowers the liquid absorbency is formed in the liquid absorbent core 48, it is extended and the liquid absorption area is expanded. Liquid absorbency can be improved. In particular, in the size adjustment band 12, since the pair of free portions 54 extend in the opposite directions around the fixed portion 53, the pair of free portions 54 positioned on the both side portions 20B are pulled in opposite directions (left and right). Since the both side edges of the liquid-absorbent core 48 where the fixing portion 53 is located are pulled left and right, the entire liquid-absorbent core 48 is moved in the lateral direction X as compared with the case where only one side edge is pulled backward. Can be expanded.

  In order to achieve such an effect, the size adjustment band 12 is preferably disposed on the leg opening 24 side in the front waist region 13, and the side edge 12d is close to the lower end edge (both inner edges 18d) of the front waist region 13 or More preferably, they are arranged so as to overlap. As described above, by arranging the size adjustment band 12 on the leg opening 24 side, the leg opening edge can be easily fitted to the wearer's body, and side leakage from the leg opening 24 can be prevented. The chassis is located between the leg opening 24 and the size adjustment band 12 because the size adjustment band 12 is closer to the leg opening 24 by positioning the side edge 12d close to or overlapping the lower end edge of the front waist region 13. This is because the entire leg opening edge including the 11 frill-like portions can be fitted to the body.

  Further, in the state where the fastening area 56 of the size adjustment band 12 is fastened to the outer surface of the rear waist area 14, the contracting action of the elastic part 58 is applied to both side portions 21 </ b> B of the rear waist area 14 where the fastening area 56 is located. Since the force toward the front acts by this, the entire rear end portion of the liquid absorbent core 48 located in the central portion 21A of the rear waist region 14 is expanded in the lateral direction X, and the liquid absorption performance is maintained and improved. Can do. Further, when the fastening region 56 is positioned so as to overlap with both side edges of the rear end portion of the liquid-absorbent core 48 in plan view, the rear end portion is pressed toward the body, so that the rear end portion is displaced. Can be suppressed.

  The elongation stress N1 in the length direction R of the elastic part 58 of the size adjustment band 12, that is, the lateral direction X is preferably set higher than the elongation stress N2 in the lateral direction X of the front lower waist elastic region 37B. Further, the extension stress N3 in the lateral direction X of the rear lower waist elastic region 38B facing (front and rear) the front lower waist elastic region 37B in the wearing state of the diaper 10 is set higher than that of the front lower waist elastic region 37B. It is preferable. Specifically, the extension stress N1 of the elastic portion 58 is 2.0 to 3.5N, the extension stress N2 of the front lower waist elastic region 37B is 0.3 to 0.7N, and the rear lower waist elasticity. The extension stress N3 in the region 38B is formed to be 1.2 to 2.6N. The extension stress N1 of the elastic part 58 and the extension stress of the rear lower waist elastic region 38B are preferably set to be approximately the same, and the difference between the extension stresses N1 and N3 is preferably 0.1 to 1.0N. Since the extension stress N2 is set relatively low in the correlation between the extension stress N1 and the extension stress N2, the leg opening 24 is formed relatively large when the diaper 10 is worn, and the leg can be easily passed. On the other hand, since the elastic portion 58 having the extension stress N1 higher than the extension stress N2 fits the leg opening edge portion together with the front lower waist elastic region 37B, the fitting property can be further improved. Moreover, in both side part 20B, when there exists a big stress difference in the extension stress by the elastic region of the front waist region 13, and the extension stress N3 in the back waist region 14, for example, the front side has a higher extension stress than the rear side. When the diaper 10 is pulled to the front side, both side edges of the diaper 10 where the seam portion 22 is located are biased to the front side, and the entire diaper 10 may be displaced. Therefore, by setting at least the extension stress N1 of the elastic portion 58 and the extension stress N3 of the rear lower waist elastic region 38B to be approximately the same, the balance of the extension stress around the front and rear waists can be maintained and a stable wearing feeling can be obtained. it can.

  In the wearing article provided with the usual size-adjustable fastening tape, when the fastening tape does not have elasticity, no gathers are formed on the outer surface thereof. Therefore, it is a disposable diaper rather than an undergarment due to the presence of the fastening tape due to the presence of the fastening tape, because it is located on the outer surface of the chassis in which a plurality of gathers is formed by each waist elastic body. Is easily recognized. In the diaper 10 according to the present embodiment, since a plurality of gathers by the elastic portions 58 are formed on the outer surface of the size adjustment band 12, the diaper 10 as a whole has a uniform appearance. In particular, a plurality of string-like or strand-like elastic bodies are disposed in the elastic portion 58 in the same manner as the waist elastic body, so that a more uniform appearance can be obtained compared to the case where an elastic sheet is disposed. Can be obtained. In this way, the overall appearance of the diaper 10 has a uniform appearance, so that the satisfaction of wearing a pants-type wearing article that seems to be more underwear is obtained, and mental support for a more active life is provided. Can play a role.

  FIG. 7 is a part of the manufacturing process of the diaper 10 according to the first embodiment, and the composite panel 100 serving as the base material of the plurality of chassis 11 is conveyed in the machine direction MD. The composite panel 100 includes a first composite panel 101 that serves as a base material for the front waist panel 18 and a second composite panel 102 that serves as a base material for the rear waist panel 19, and the first and second composite panels 101 and 102. A continuous elastic body 105 corresponding to the front and rear waist elastic bodies 34 and 35 is disposed in the inside. On the inner surface of the composite panel 100, the liquid absorbent panel 17 is intermittently disposed in the machine direction MD. The continuous elastic body 105 is formed in a non-bonded state in a region overlapping with the liquid-absorbing panel 17, and the continuous elastic body 105 is cut and cut back at a position corresponding to the longitudinal axis P of the diaper 10. A non-contracting region is formed at a portion overlapping the body 41. The first and second composite panels 101 and 102 sandwich a cutting line 108 that bisects the separation distance between adjacent liquid-absorbing panels 17 and sandwich a pair of joint portions (seam portions 22) 107 extending in the cross direction CD. Are joined. The continuous elastic body 105 can be in a bonded state or a non-bonded state with respect to the first and second composite panels 101 and 102 between the pair of bonded portions 107.

  In such a composite panel 100, a continuous band 103 serving as a base material for the inner and outer surface sheets 61 and 62 of the size adjustment band 12 is continuously arranged on the outer surface of the first composite panel 101 in the machine direction MD. The continuous band 103 is joined to the first composite panel 101 at a portion overlapping the liquid-absorbing panel 17. A continuous band elastic body 104 corresponding to the band elastic body 63 is disposed inside the continuous band 103, formed in a non-bonded state in a region overlapping the liquid absorbent panel 17, and a position corresponding to the vertical axis P of the diaper 10. By cutting the continuous band elastic body 104 and cutting it back, a non-shrinkable region is formed at a portion overlapping the liquid absorbing structure 41. Further, on the inner surface of the continuous band 103, a sheet member forming the gripping portion 57 around the cutting line 108 is intermittently disposed in the machine direction MD, and a pair of sheet members is formed on both sides of the cutting line 108 on the inner surface of the sheet member. The fastening area 56 is arranged. Finally, the composite panel 100 and the continuous band 103 are cut along the cutting line 108 to produce individual diapers 10. The size adjustment band 12 is fixed to the diaper main body in the fixing region 56 and is temporarily fixed by heat-sealing with a part of both side edges of the diaper main body when the cutting is performed at the cutting line 108.

  In this way, the continuous band 103 is attached to the composite panel 100 serving as the base material of the chassis 11 while being conveyed in the machine direction MD, and the diaper 10 including the size adjustment band 12 can be continuously manufactured by one cut. Therefore, it can manufacture simply compared with the case where the size adjustment band 12 manufactured separately is attached to each manufactured diaper main body. In addition, when the chassis 11 and the size adjustment band 12 are extended in the machine direction MD, that is, in the horizontal direction X, the outer end edge 12a of the size adjustment band 12 has both outer edges 18c, 19c of the front and rear waist regions 13,14. And the diaper 10 can be packaged in a temporarily fixed state. In such a diaper 10, the outer end edge 12 a of the size adjustment band 12 is positioned outside the outer side edges 18 c and 19 c of the front and rear waist regions 13 and 14 in a state where the outer end edge 12 a is worn when worn. There is no risk of touching the wearer's body. Further, even if the outer edge 12a of the size adjustment band 12 is not temporarily fixed to the diaper main body, the same effect can be obtained by transporting and packaging the fixing area 56 in a state of being fixed to the diaper main body. it can.

  In FIG. 7, an enlarged view T1 shows a side edge of the diaper 10 when the continuous elastic body 105 is joined to the first and second composite panels 101, 102 via a hot melt adhesive between the pair of joining portions 107. The enlarged view T2 shows the state of the side edge portion of the diaper 10 when the continuous elastic body 105 is not joined to the first and second composite panels 101, 102 between the pair of joining portions 107. Indicates.

  Referring to the enlarged view T1, when the continuous elastic body 105 is bonded to the first and second composite panels 101 and 102 via the hot melt adhesive between the pair of bonded portions 107, the diaper 10 is In the regions 13 and 14, ridges are formed by the front and rear waist elastic bodies 34 and 35 at a portion located on the outer side in the lateral direction X of the seam portion 22. In the diaper 10, when the size adjustment band 12 is used, a finger is inserted between the side edge of the diaper 10 and the outer end edges 12 a and 12 b of the size adjustment band 12 so that the gripping portion 57 can be easily picked. Can do.

  Referring to the enlarged view T2, when the continuous elastic body 105 is not bonded to the first and second composite panels 101 and 102 between the pair of bonding portions 107, the continuous elastic body 105 is located at a position corresponding to the cutting line 108. When the diaper 10 is cut back and cut back, the portions of the front and rear waist regions 13 and 14 that are located outside the seam portion 22 in the lateral direction X are elastically non-stretchable. In the diaper 10, the portion located outside the lateral direction X of the seam portion 22 has a uniform appearance with the gripping portion 57 of the size adjustment band 12 that is not stretched, and the presence of the size adjustment band 12. Is not clearly recognized, and at first glance is not recognized as the diaper 10 with the size adjustment band 12.

<Method for measuring elongation stress>
The elongation stress N1 of the elastic portion 58 was measured by the following method using an tensile tester (INSTRON model: 5564) manufactured by Instron Japan Company Limited, setting the tensile speed to 100 mm / min. One free portion 54 and the fixed portion 53 of the size adjustment band 12 are cut out from the diaper 10 and marked lines extending in the vertical direction Y are respectively drawn at the boundaries between the fixed portion 53 and the elastic portion 58 and between the elastic portion 58 and the holding portion 57. To do. The fixed portion 53 and the holding portion 57 are gripped by a pair of chucks along the marked line so that the elastic portion 58 in the marked line is positioned between the chucks, and when the specimen is fully extended (gather due to the contraction action of the elastic material). Measure the length). After the measurement, the specimen is left in a relaxed state for 24 hours in an environment of 20 degrees, and then stretched to a length of 85% at the maximum extension with a pair of chucks, and then contracted to a state of 70% at the maximum extension. The stress per unit width (10 mm width) in a 70% state was measured. The elongation stresses N2 and N3 of the front and rear lower waist elastic regions 37B and 38B were also measured in the same manner. In the front and back lower waist elastic regions 37B and 38B, a portion that overlaps with the specimen of the size adjustment band 12 in a plan view (a portion that overlaps in the front and rear direction of the wearing state) is cut out as a specimen, and the elastic portion 58 in the marked line The specimen was gripped with a pair of chucks and measured so that the overlapping part in plan view was located between the chucks.

Second Embodiment
8 is a partially enlarged view similar to FIG. 4 according to the first embodiment of the present application, and FIG. 9 is a schematic cross-sectional view taken along line IX-IX in FIG. Since the basic configuration of the diaper 10 according to the present embodiment is the same as that according to the first embodiment, only differences will be described below.

The size adjustment band 12 in this embodiment includes a fixed portion 53 and a pair of free portions 54, and the fixed portion 53 and the free portion 54 have a belt-like sheet 80 formed from a plurality of sheet members. The belt-like sheet 80 includes a non-elastic sheet 81 that is elastically non-stretchable and an elastic sheet 82 that can be elastically extended at least in the length direction R. The non-elastic sheet 81 forms the outer surface of the size adjustment band 12, and is formed from a known fiber nonwoven fabric, for example, a spunbond fiber nonwoven fabric, an SMS fiber nonwoven fabric, or an air-through fiber nonwoven fabric having a mass of about 10 to 40 g / m ^2. . The elastic sheet 82 faces the non-skin facing surface of the chassis 11, is formed of a stretchable fiber nonwoven fabric containing elastomer fibers, and is attached to the non-elastic sheet 81 in an expanded state.

  The free portion 54 is connected to the fixed portion 53 and can elastically extend and contract in the length direction R (lateral direction X in the present embodiment), and from the elastic portion 58 to the outer edge 12a, 12b side. And a gripping portion 57 (outer end portion 54a) extending to the bottom. The elastic part 58 may be configured such that at least a part thereof can be elastically expanded and contracted between the fixing part 53 and the gripping part 57, and the entire part may not elastically expand and contract. In the present embodiment, the elastic sheet 82 is disposed in the fixed portion 53 and the free portion 54 and is inelasticized in the fixed portion 53 and the holding portion 57, but it is sufficient that it is disposed at least in the elastic portion 58.

  A fastening region 56 and a gripping portion 57 are formed on the outer end portion 54a in the length direction R of the free portion 54. In the gripping portion 57, a relatively non-rigid fiber nonwoven fabric or A tab sheet 57a formed of a plastic film is joined, has a higher rigidity than the non-existing region of the fastening region 56 in the free portion 54, and is elastically non-stretchable. Instead of the tab sheet 57a, the gripping portion 57 of the elastic sheet 82 is subjected to, for example, pressure treatment or pressure heating processing by embossing / debossing, and the gripping portion 57 in the longitudinal direction Y and / or the lateral direction X The bending rigidity may be higher than the non-existing region of the fastening region 56. In the present embodiment, the fixing portion 53 is composed of a continuous sheet member that connects the pair of free portions 54. For example, the sheet member that forms the size adjustment band 12 is separated at the central portion 20A, The configuration may include a pair of fixed portion 53 and free portion 54 that are separated in the direction X.

  In the diaper 10 according to the second embodiment, fine wrinkles are formed on the non-elastic sheet 81 due to the contraction of the elastic sheet 82, so that the outer surface of the size adjustment band 12 has a soft touch, and the appearance exhibits a texture like underwear. . Further, the presence of the size adjustment band 12 becomes inconspicuous, and an impression that seems to be underwear can be given to the wearer.

<Third Embodiment>
FIG. 10 is a front view of the diaper 10 in the third embodiment. Since the basic configuration of the diaper 10 according to the present embodiment is the same as that according to the first embodiment, only differences will be described below.

  The diaper 10 according to the present embodiment includes a pair of size adjustment bands (size adjustment means) 112 spaced in the lateral direction X. Each size adjustment band 112 includes an outer end edge 112a and an inner end edge 112b that face each other in the length direction R, side edges 112c and 112d that face each other in the width direction S, and a fixing portion 153 fixed to the chassis 11. And a free part 154 extending in the length direction R from the fixed part 153. Each size adjustment band 112 is arranged obliquely with respect to them such that the length direction R intersects the vertical direction Y and the horizontal direction X. The fixing portions 153 are positioned so as to overlap with both side edges of the liquid-absorbent core 48 in plan view. Therefore, as in the other embodiments, by using the size adjustment band 112, the diaper is in a state where the central portion 20A of the front waist region 13 is pulled outward in the lateral direction X and the liquid-absorbent core 48 is expanded. 10 can be fitted to the wearer's body. Moreover, even if it is a case where the size adjustment band 112 is arrange | positioned diagonally with respect to the both-sides edge of the liquid absorption core 48 like this embodiment, it arrange | positions it to the leg opening 24 side of the front waist region 13. Thus, when the fastening region 56 is fastened to the rear waist region 14 or the crotch region 15, the outer peripheral dimension of the leg opening 24 can be reduced, and the leg opening edge can be brought into close contact with the wearer's body.

  For each constituent material constituting the pant-type wearing article 10 of the present invention, various known materials that are usually used in this kind of field can be used without limitation unless otherwise specified. it can. In addition, the front and rear waist regions 13 and 14 are not configured from separate sheet members, and the front and rear waist regions 13 and 14 and the crotch region 15 may be integrally formed. Specifically, the inner and outer layer sheets 30, 31, 32, and 33 may be formed from a single substantially hourglass-shaped sheet member that forms the outer shape of the diaper 10. Further, in the specification and the claims for utility model registration, the terms “first” and “second” are used to simply 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.

  The longitudinal direction Y and the lateral direction X, the skin facing surface and the non-skin facing surface located on the opposite side, the front waist region 13, the rear waist region 14, and the crotch region 15 located between the front and rear waist regions 13,14 The size of the chassis 11 includes a size adjustment band 12 positioned in one of the front and rear waist regions 13 and 14, and a seam portion 22 that connects both side edges of the front and rear waist regions 13 and 14. In the pants-type diaper 10 including the formed waist opening 23 and the pair of leg openings 24, the size adjustment band 12 is fixed to the non-skin facing surface side of the chassis 11, and the one waist region 13 in the lateral direction X is fixed. The fixed part 53 located in the center part 20A side and a pair of free parts 54 located in the outer side of the horizontal direction X of the fixed part 53 are included. And fastened Possible fastening region 56 on the surface, located between the fixing portion 53 and the fastening zone 56, and a resiliently stretchable elastic portion 58.

The present invention disclosed in the above paragraph 0053 can include at least the following embodiments.
(1) The chassis 11 includes a liquid-absorbing panel 17 extending from the crotch region 15 to the front and rear waist regions 13 and 14, and the fixing portion 53 is positioned so as to overlap with the liquid-absorbing panel 17 in plan view.
(2) The chassis 11 includes a leak-proof sheet 43 extending from the crotch region 15 to the front and rear waist regions 13 and 14, and the fixing portion 53 is positioned so as to overlap the leak-proof sheet 43 in plan view.
(3) It further includes a liquid absorbent core 48 extending from the crotch region 15 to the front and rear waist regions 13 and 14, and the fixing portion 53 is positioned so as to overlap the liquid absorbent core 48 in plan view.
(4) The size adjusting means 12 has a pair of side edges 12c and 12d extending in the lateral direction X. Of the pair of side edges 12c and 12d, the side edge 12d on the crotch region 15 side is one waist region 13. It arrange | positions so that it may adjoin or overlap with the lower end edge (both inner side edges 18d).
(5) One waist region 13 has a first waist elastic region 37B which is located between the fixing portion 53 and the seam portion 22 and can be elastically expanded and contracted in the lateral direction X. The elongation stress per unit area at the time of 70% elongation of the maximum elongation in the lateral direction X of the portion 58 is larger than the elongation stress per unit area at the time of 70% elongation of the maximum elongation in the lateral direction X of the first waist elastic region 37B. high.
(6) The other waist region 14 has a second waist elastic region 38B that faces the first waist elastic region 37B in a worn state, and the extension stress in the lateral direction X of the first waist elastic region 37B is the second waist elastic region 37B. It is lower than the elongation stress in the lateral direction X of the elastic region 38B.
(7) The size adjusting means 12 has a length direction R and a width direction S orthogonal to the length direction R, and the dimension of the fastening region 56 in the width direction S is the same as that of the elastic portion 58 in the width direction S. Greater than dimensions.
(8) In the size adjusting means 12, the outer end portion 54a of the free portion 58 is elastically non-stretchable.
(9) The fixed portion 53 is made of a sheet member that connects the pair of free portions 54, and the outer edge of the free portion 54 when the chassis 11 and the size adjusting means 12 are extended in the lateral direction X at the maximum extension. 12a and 12b correspond to the side edges (both outer edges 18c and 18d) of both side edges of one waist region 13.
(10) The fastening region 56 can be fastened to the non-skin facing surface of the chassis 11 in the other waist region 14.
(11) At the outer end portion 54 a of the free portion 54, a gripping portion 57 having higher rigidity than the elastic portion 58 is formed.
(12) The elastic part 58 is formed of an elastic sheet.
(13) The portions of the front and rear waist regions 13 and 14 that are located outside the seam portion 22 in the lateral direction X are elastically non-stretchable.
(14) The size adjusting means 12 is packaged in a state where the fastening region 56 is fastened to the non-skin facing surface of the one waist region 13.

10 Pants-type disposable diapers (pants-type wearing articles)
11 Chassis 12, 112 Size adjustment band (size adjustment means)
13 Front waist region 14 Rear waist region 15 Crotch region 22 Seam portion 48 Liquid-absorbing core 53, 153 Fixing portion 54, 154 Free portion 54a Outer end portion 56 Fastening portion 57 Holding portion 58 Elastic portion R Length direction S Width Direction X Horizontal direction Y Vertical direction

Claims (15)

A chassis having a longitudinal direction and a lateral direction, a skin facing surface and a non-skin facing surface located on the opposite side thereof, a front waist region, a rear waist region, and a crotch region located between the front and rear waist regions; A pants type comprising size adjusting means located in one of the front and rear waist regions, a waist opening defined by seam portions connecting both side edges of the front and rear waist regions, and a pair of leg openings In the wearing article of
The size adjusting means is fixed to the non-skin facing surface side of the chassis, and is positioned on the lateral side central portion side of the one waist region, and is positioned on the lateral outer side of the fixed portion. And a pair of free parts
The free part includes a fastening area that can be fastened to the non-skin facing surface of the chassis, and an elastic part that is positioned between the fixed part and the fastening area and can be elastically stretched. A featured wearing article.   The wearing article according to claim 1, wherein the chassis includes a liquid-absorbing panel extending from the crotch region to the front and rear waist regions, and the fixing portion is positioned so as to overlap the liquid-absorbing panel in a plan view.   The wearing article according to claim 1 or 2, wherein the chassis includes a leak-proof sheet extending from the crotch region to the front and rear waist regions, and the fixing portion is positioned so as to overlap the leak-proof sheet in a plan view.   The wearing article according to any one of claims 1 to 3, further comprising a liquid-absorbent core extending from the crotch region to the front-and-rear waist region, wherein the fixing portion is positioned so as to overlap the liquid-absorbent core in a plan view.   The size adjusting means has a pair of side edges extending in the lateral direction, and the side edge on the crotch region side of the pair of side edges is close to or overlaps with a lower end edge of the one waist region. The wearing article in any one of Claims 1-4 arrange | positioned. The one waist region has a first waist elastic region which is located between the fixed portion and the seam portion and can be elastically expanded and contracted in the lateral direction,
The elongation stress per unit area at the time of 70% of the maximum extension in the lateral direction of the elastic part of the size adjusting means is the unit area at the time of 70% of the maximum extension in the lateral direction of the first waist elastic region. The wearing article according to any one of claims 1 to 5, which is higher than a hit elongation stress.   The other waist region has a second waist elastic region facing the first waist elastic region in a worn state, and the extensional stress in the lateral direction of the first waist elastic region is the same as that of the second waist elastic region. The wearing article according to claim 6, wherein the wearing article is lower than the elongation stress in the lateral direction.   The size adjusting means has a length direction and a width direction orthogonal to the length direction, and the dimension of the fixing region in the width direction is larger than the dimension of the elastic portion in the width direction. The wearing article in any one of claim | item 1 -7.   The wearing article according to any one of claims 1 to 8, wherein the size adjusting means has an outer end portion of the free portion that is elastically non-stretchable.   The fixed portion is composed of a sheet member that connects a pair of the free portions, and when the chassis and the size adjusting means are extended in the lateral direction, the outer edge of the free portion is The wearing article in any one of Claims 1-9 which corresponds to the side edge of the said both-sides edge part of one waist area.   The wearing article according to claim 7, wherein the fastening area can be fastened to the non-skin facing surface of the chassis in the other waist area.   The wearing article according to any one of claims 1 to 11, wherein a grip portion having higher rigidity than the elastic portion is formed at an outer end portion of the free portion.   The wearing article according to claim 1, wherein the elastic part is formed of an elastic sheet.   The wearing article according to any one of claims 1 to 13, wherein a portion of the front and rear waist region that is located on the outer side in the lateral direction than the seam portion is elastically non-stretchable.   The wearing article according to any one of claims 1 to 14, wherein the size adjusting means is packaged in a state where the fixing area is fixed to the non-skin facing surface of the one waist area.

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