JP5787689B2 - Disposable wearing items - Google Patents

Description

  The present invention relates to a disposable wearing article, and more particularly to a disposable wearing article such as a disposable diaper for adults that can be used by connecting the front and rear waist regions with a fastening tape.

  Conventionally, wearing articles in which front and rear waist regions are connected by fastening tape are known. For example, Patent Document 1 discloses a disposable diaper in which a flap having a hook member attached to a rear waist region is formed, and an annular waist opening is formed by connecting the hook member to an outer sheet of the front waist region. Has been. By attaching an elastic member, the flap is elasticized so that it can expand and contract in the lateral direction. By making the flap elastic, the diaper can be brought into close contact with the wearer's waist.

JP 2009-183364 A (JP2009-183364A)

  In Patent Document 1 as described above, since the force for pulling the flap is different depending on the user, the length and the stretching force of the flap after being pulled are different. Therefore, even when wearing a diaper of the same size, the force of pulling the flap may loosen the waist opening or become too tight or cramped with respect to the wearer.

  This invention makes it a subject to provide the disposable wearing article which a waist region, especially waist opening vicinity can closely_contact | adhere moderately to a wearer's waist.

The present invention has a longitudinal direction and a lateral direction, and has a skin facing surface and a non-skin facing surface that is the opposite side thereof, a front and back waist region, and a first waist region that is one of these front and back waist regions, A chassis including a second waist region which is the other, a crotch region located between the first and second waist regions, and fastening means for connecting the first and second waist regions to each other, The fastening means includes a first connecting element located on the non-skin facing surface of the first waist region, and a second connecting element that can be attached to the first connecting element, and the second connecting element includes: It attaches to the side panel extended in the said horizontal direction from a 2nd waist area, and the said side panel is concerned with the improvement of the disposable wearing article elastically extendable in the said horizontal direction.
1st invention is the said disposable wearing article, WHEREIN: While the said side panel is equipped with the expansion-contraction area | region which can be expanded-contracted at least in the said horizontal direction, and the non-expandable area | region located in the said horizontal direction both outer sides of the said expansion-contraction area | region, The expansion ratio of the dimension in the horizontal direction at the maximum expansion of the expansion / contraction region is 10 to 40% with respect to the dimension in the horizontal direction at the contraction of the expansion / contraction region, and the expansion stress in the horizontal direction is 1 to 5N / 50 mm der is, the chassis, the extending in the longitudinal direction, and a pair of containment sheet having a distal edge capable spaced to the skin-facing side, the lateral than the distal edge A leg elastic body positioned on the outside and attached to be retractable in the longitudinal direction, the leg elastic body includes a first edge located on the first waist region side, and Second A second end edge located on the side of the est area, the second end edge is located in the second waist area and is located on the laterally inner side of the side panel, and the crotch area is The lateral dimension is smaller than the first and second waist regions, and the dimension of the side panel in the longitudinal direction is larger than the dimension of the first waist region in the longitudinal direction .
2nd invention is the said disposable wearing article WHEREIN: While the said side panel is equipped with the expansion-contraction area | region which can be expanded-contracted at least in the said horizontal direction, and the non-expandable area | region located in the said horizontal direction both outer sides of the said expansion-contraction area | region, The expansion ratio of the dimension in the horizontal direction at the maximum expansion of the expansion / contraction region is 10 to 40% with respect to the dimension in the horizontal direction at the contraction of the expansion / contraction region, and the expansion stress in the horizontal direction is 1 to 5N / 50 mm, and the chassis has a leg elastic body that is positioned outside the absorbent body in the lateral direction and attached to be retractable in the longitudinal direction, and the leg elastic body is The first edge located on the first waist region side and the second edge located on the second waist region side, the second edge is located in the second waist region, The The crotch region is smaller in the lateral direction than the first and second waist regions, and the dimension of the side panel in the longitudinal direction is that of the first waist region. It is larger than the dimension in the vertical direction.

  “At maximum extension” means when the side panel is pulled laterally against the expansion / contraction force of the expansion / contraction region, when the expansion / contraction region is fully extended and does not extend any further. That is. It does not include extending until the side panel is broken.

  According to one or more embodiments of the present invention in particular, the second connecting element is attached to the side panel extending from both side edges of the chassis of the wearing article, the side panel has an elongation of 10 to 40%, and Since the extension stress in the direction is 1 to 5 N / 50 mm, when the side panel is pulled in the lateral direction, an extension stop that cannot be pulled any more can be obtained relatively quickly after starting to pull and with a light force. be able to. The second connecting element can be attached to the first connecting element by pulling the side panel to the end of extension, so that the worn article can be appropriately worn on the wearer's waist without becoming too cramped or too loose. It can be adhered.

The perspective view which shows the wearing condition of the disposable diaper which is one Embodiment of a disposable wearing article. The top view seen from the skin opposing surface of the developed diaper. The exploded perspective view of a diaper. FIG. 4 is an end view taken along line IV-IV in FIG. 2. (A) The figure which shows the contraction state of a side panel. (B) The figure which shows the expansion | extension state of a side panel. The table | surface which shows the tensile strength of a side panel. The figure which shows the disposable diaper of another embodiment.

  FIG. 1 is a perspective view when connecting the front and rear waist regions of a disposable diaper as an example of a disposable wearing article according to the present invention, FIG. 2 is a plan view seen from the skin facing surface of the developed diaper, and FIG. 3 is a diaper 4 is an end view taken along line IV-IV in FIG. 2, FIG. 5A is a diagram showing a contracted state of the side panel, and FIG. 5B is a diagram showing an extended state of the side panel. 2-4, each elastic body is shown in the state extended against the contraction force. In this embodiment, the diaper 1 can be suitably used particularly for an adult, and can be used for a person who needs assistance for excretion, such as a bedridden person or a person using a wheelchair.

  As shown in FIG. 1, the diaper 1 has a longitudinal direction Y and a lateral direction X, a front waist region 11 and a rear waist region 12, a crotch region 13 positioned between these front and rear waist regions 11, 12, It has front and rear end edges 14 and 15 extending in the direction X, and both side edges 16 extending in the longitudinal direction Y. The diaper 1 can fix the diaper 1 to a body while forming the waist opening by connecting the hook element 77 of the fastening system provided in the rear waist region 12 to the front waist region 11.

  As shown in FIG. 2, the diaper 1 has a virtual vertical center line PP that bisects the dimension in the horizontal direction X, and is substantially symmetric with respect to the virtual vertical center line PP. Some of the same components that are made symmetrical are omitted in the drawings.

  As shown in FIGS. 2 to 4, the diaper 1 includes a liquid-permeable surface sheet 20 positioned on the skin facing surface, and a back sheet 30 positioned on the non-skin facing surface (clothing side) on the opposite side. The body fluid absorber 40 positioned between the front and back sheets 20 and 30 and the liquid-impervious or liquid-impervious leak-proof sheet 50 positioned between the absorber 40 and the back sheet 30 are included. A pair of containment sheets 60 that are spaced apart in the horizontal direction X and extending in the vertical direction Y are disposed on the skin facing surface of the topsheet 20. The top sheet 20 and the back sheet 30 form the chassis 10 of the diaper according to the embodiment.

As the surface sheet 20, for example, a hydrophilic spunbond fiber nonwoven fabric or point bond fiber nonwoven fabric having a mass of about 15 to 35 g / m ² , preferably about 18 to 23 g / m ² can be used. As the back sheet 30, for example, a spunbond / meltblown / spunbond (hereinafter referred to as SMS) non-woven fabric or a spunbond non-woven fabric having a mass of about 10 to 30 g / m ² can be used.

As the containment sheet 60, for example, an SMS fiber nonwoven fabric having a mass of about 10 to 30 g / m ² can be used. The front and rear end edges 61 and 62 of the containment sheet 60 are overlapped so as to coincide with the front and rear end edges 21 and 22 of the surface sheet 20, and are joined to each other by a known joining means such as a hot melt adhesive (not shown). The proximal edge portion 63 of the containment sheet 60 overlaps both side edge portions 33 of the back sheet 30 and is joined to each other by a known joining means such as a hot melt adhesive (not shown). The distal edge 64 of the containment sheet 60 overlaps the top sheet 20 in the extended state in the longitudinal direction Y of the diaper 1. An elastic body 65 extending in the longitudinal direction Y is attached to the distal edge portion 64 so as to be retractable in an extended state. Due to the contraction of the elastic body 65, the distal edge 64 is separated from the surface sheet 20 toward the wearer's skin side and closely contacts the skin, and excrement such as stool is contained inside the containment sheet 60.

  The absorber 40 functions as long as it is located at least in the crotch region 13. In this embodiment, the absorber 40 extends from the crotch region 13 to the front and rear waist regions 11 and 12 and excretes urine or the like in a relatively wide range. It is designed to absorb things. The absorbent body 40 is formed by covering a liquid-absorbent core material with a liquid-diffusible covering sheet such as tissue paper. Wood fluff pulp, superabsorbent polymer particles, or a mixture thereof can be used as the core material. The core material and the covering sheet can be joined to each other using a known joining means such as a hot melt adhesive (not shown).

  The leak-proof sheet 50 disposed between the absorber 40 and the back sheet 30 may be made of a liquid-permeable, preferably liquid-impervious and breathable plastic film. The area of the leak-proof sheet 50 is larger than that of the absorber 40. Therefore, excrement such as urine absorbed by the absorber 40 can be prevented from leaking outside the diaper 1. The leak-proof sheet 50 can be bonded between the covering sheet of the absorber 40 and the back sheet 30 by using a known bonding means such as a hot melt adhesive (not shown).

  A leg elastic body 51 is attached to the surface of the leak-proof sheet 50 opposite to the surface facing the back sheet 30. The leg elastic body 51 is bonded between at least one of the leak-proof sheet 50 and the containment sheet 60 by a known bonding means such as a hot melt adhesive (not shown). The leg elastic body 51 extends in the longitudinal direction Y along both side edges 16 in the crotch region 13, and the first end edge 51 a located on the front waist region 11 side extends to the front waist region 11, and The second end edge 51b located on the side of the waist region 12 extends to the rear waist region 12, and is attached to the longitudinal direction Y so as to be contractable in an extended state. As the leg elastic body 51, a plurality of string-shaped or strand-shaped elastic bodies can be used.

  A pair of side panels 70 are attached to both side edges 16 of the rear waist region 12 of the chassis 10. The side panel 70 includes a first sheet 71 located on the skin facing surface, a second sheet 72 located on the non-skin facing surface, and a plurality of side panel elastic bodies 73 attached between these sheets. Inner edges 71 a and 72 a of the first and second sheets 71 and 72 are joined to the chassis 10 via a connection sheet 74. Specifically, the inner edge 72 a of the second sheet 72 is joined to one end of the connecting sheet 74, and the other end of the connecting sheet 74 has a surface opposite to the surface facing the second sheet 72. Bonded to the back sheet 30. The outer edges 71 b and 72 b of the first and second sheets 71 and 72 are joined between the base sheet 75 and the tab sheet 76. A hook element 77 is fixed to the body side of the tab sheet 76. For fixing the tab sheet 76 and the hook element 77 or joining the sheets, a known joining means such as a hot melt adhesive (not shown) can be used.

The first and second sheets 71 and 72 have substantially the same shape and size. For example, an SMS fiber nonwoven fabric having a mass of about 10 to 30 g / m ² can be used, and a known joint such as a hot melt adhesive (not shown) can be used. They are joined together by means. These first and second sheets 71 and 72 are substantially non-extensible fiber nonwoven fabrics. "Substantially non-extensible" means that the diaper 1 is used around the waist opening when the diaper 1 is worn even if it is pulled with a normal force at least in the lateral direction X without having elastic elasticity. The one that does not change the dimension that affects the setting of the dimension. Incidentally, even if the entanglement of the fibers of the nonwoven fabric is slightly unwound by the normal force and may be slightly stretched inelastically, this is assumed to be substantially in the range of inelasticity. This is because the dimension setting is not affected.

  A plurality of side panel elastic bodies 73 are attached to at least one of the first and second sheets 71 and 72. The side panel elastic body 73 is attached in such a manner that the side panel elastic body 73 can contract in the extended state in the horizontal direction X and is spaced apart in the vertical direction Y. By attaching the side panel elastic body 73 in this way, an expansion / contraction region 78 that can elastically expand and contract in the lateral direction X is formed. Specifically, the expansion / contraction region 78 is a region in which the side panel elastic body 73 can expand and contract, and at both ends, for example, when it is cut back or the like in the attachment process, both ends that do not exhibit expansion / contraction force. Does not include parts. As the side panel elastic body 73, for example, a string-like or strand-like elastic body having a thickness of about 470 to 700 dtex can be used. These elastic bodies are stretched about 2 to 3 times in the lateral direction X. The pitch in the longitudinal direction Y is set to about 5 to 15 mm. The side panel elastic body 73 in this embodiment is about 620 dtex, is arranged with a pitch in the vertical direction Y of about 10 mm, and is attached by being extended about 2.6 times in the horizontal direction X.

As the connection sheet 74 and the base sheet 75, for example, a spunbond fiber nonwoven fabric having a mass of about 30 to 50 g / m ² can be used. As the tab sheet 76, for example, a spunbond fiber nonwoven fabric having a mass of about 30 to 50 g / m ² can be used.

  In the side panel 70 as described above, inside and outside non-stretchable regions 79 a and 79 b that are not elastically stretched are formed on both outer sides in the lateral direction X of the stretchable region 78. In the outer non-stretchable region 79b, two hook elements 77 are attached to be separated in the vertical direction Y. By hooking such a hook element 77 on the fiber nonwoven fabric of the back sheet 30 of the front waist region 11, the front and rear waist regions 11 and 12 are connected, and the pants-type diaper 1 can be worn by the wearer. The hook element 77 of this embodiment is a second connecting element according to the present invention, and the back sheet 30 in the front waist region 11 is a first connecting element according to the present invention. By using the back sheet 30 as the first connecting element, the first connecting element is formed in the entire area in the lateral direction X from one side edge 16 to the other side edge 16, and the hook element 77 faces the non-skin of the chassis 10. It can be attached to any of the surfaces. Since the hook element 77 can be connected in a wide range of the front waist region 11, the front and rear waist regions 11, 12 can be connected in close contact with the wearer in accordance with the wearer's body shape and body condition. Moreover, since a separate member is not required by using the back surface sheet 30 as the first connecting element, the manufacturing cost can be reduced accordingly. The first connecting element can be attached to a part of the front waist region 11 or can be attached so as to be positioned on almost the entire front waist region 11.

  In the diaper 1 as described above, in the chassis 10, the dimension A1 in the lateral direction X of the front waist region 11 and the dimension A2 in the lateral direction X of the rear waist region 12 are substantially equal. In the crotch region 13, the dimension in the lateral direction X is made smaller than the dimensions A1 and A2. The dimensions A1 and A2 are about 350 to 650 mm, and in this embodiment, about 435 mm (see FIG. 2).

  As shown in FIG. 5A, the dimension B1 in the lateral direction X of the side panel 70 when the expansion / contraction region 78 contracts is about 80 to 200 mm, and in this embodiment is about 120 mm. The dimension in the lateral direction X of the side panel 70 is the dimension from the outer end edge 76a of the tab sheet 76 to the side edge 16 of the chassis 10, and the contraction of the stretchable region 78 is the elasticity of the side panel attached in the stretched state. The body 73 is in a contracted state while generating wrinkles on the first and second sheets 71 and 72, and the dimension in the lateral direction X is measured without pulling the side panel elastic body 73 in the lateral direction X. . As shown in FIG. 5B, the dimension B2 in the lateral direction X of the side panel 70 when the stretchable region 78 is fully extended is about 100 to 300 mm, and in this embodiment is about 165 mm. The maximum extension of the expansion / contraction region 78 means that when the side panel 07 is pulled in the lateral direction X against the expansion / contraction force of the expansion / contraction region 78, the expansion / contraction region 78 is fully extended and no longer extends. The so-called growth stoppage. In this embodiment, it means that the side panel elastic body 73 is pulled in the lateral direction X until the wrinkles generated in the first and second sheets 71 and 72 are eliminated. The term “at the time of maximum extension” does not include extending the first and second sheets 71 and 72 forming the side panel 70 until they are broken.

  The dimension B2 of the side panel 70 at the maximum extension of the stretchable region 78 has an elongation of about 10 to 40%, preferably about 15 to 35%, compared to the dimension B1 at the time of contraction. The elongation is calculated by (dimension B2-dimension B1) / dimension B2 × 100. The elongation in this embodiment is about 27%.

  In this embodiment, the dimensions A1 and A2 are substantially equal, but the dimension A1 is preferably at least about 50% of (dimension A2 + dimension B2). If the size of the front waist region 11 in the lateral direction X is too small compared to that of the rear waist region 12, the region to which the hook element 77 is connected becomes small and it becomes difficult to connect it. Moreover, the size setting range of the waist opening formed by the front and rear waist regions 11 and 12 becomes narrow, and it becomes impossible for a wearer with a particularly large waist to wear it. However, by setting the dimension A1 within the above range, it is possible to secure a wide area where the hook element 77 can be connected, and it is possible to deal with wearers of various waist sizes.

The dimension B2 is about 15 to 25% of the dimension in the lateral direction X of the diaper 1. The dimension in the horizontal direction X of the diaper 1 is (dimension A) + (dimension B2) × 2. That is, dimension B2 / (dimension A + dimension B2 * 2) * 100 = 15 to 25%. In this embodiment, 165 mm / (435 mm + 165 mm × 2) × 100 = about 21.6%.
The extension stress in the lateral direction X of the side panel 70 as described above is about 1 to 5 N / 50 mm, preferably about 1 to 4 N / 50 mm.

<Method for measuring tensile stress>
The tensile stress of the side panel 70 was determined from the tensile test result measured using INSTRON (model: 5564) manufactured by Instron Japan Company Limited. As shown in FIG. 5A, the side panel when contracted as a sample S is cut into a dimension of 150 mm in the horizontal direction X and a dimension of 50 mm in the vertical direction Y. The sample S is cut so as to include the stretchable region 78 and the inner and outer non-stretchable regions 79a and 79b. Since the sample S includes at least the non-stretchable region 78 and the inner and outer non-stretchable regions 79a and 79b, the sample S may be cut outside in the lateral direction X from the inner and outer non-stretchable regions 79a and 79b. The sample S can be appropriately changed depending on the size of the side panel 70 and the size of the diaper 1 and can be subjected to a tensile test. The ends of the sample S are sandwiched between a pair of chucks of the measuring machine. The portion sandwiched between the chucks is the outside of the stretchable region 78, that is, the inside / outside non-stretchable regions 79a and 79b. In the measuring machine in which the sample S is set in this way, the chucks are pulled away from each other at a speed of 300 mm / min. The measurement results at this time are shown in a table as shown in FIG. In the table of FIG. 6, the vertical axis is the load and the horizontal axis is the tensile elongation.

  As shown in FIG. 6, it is understood that when the tensile elongation is about 45 mm, the amount of increase in the load suddenly increases, that is, the inclination becomes steep and a so-called elongation stop occurs at this point. . This substantially coincides with the dimension B2 when the side panel 70 is extended in the lateral direction X in FIG. In addition, when the extension elongation in FIG. 6 exceeds 45 mm, it is in the state which the entanglement or welding of the fiber nonwoven fabric in the 1st and 2nd sheet | seats 71 and 72 of the side panel 70 was released. As for the tensile stress (N / 50 mm), the load (N) at 90% elongation is obtained from the table of FIG. 6 when the tensile elongation (dimension B2) at which elongation stop occurs is defined as 100%. In this embodiment, since 45 mm × 90% = 40.5 mm, the load when the tensile elongation is 40.5 mm in the table of FIG. 6 is about 2.5, and the tensile stress is about 2.5 N / 50 mm.

  Such a diaper 1 can be suitably worn by a bedridden adult, for example. The dimension in the lateral direction X at the maximum extension of the side panel 70 of the diaper 1, that is, the dimension from one outer end edge 76a to the other outer end edge 76a of the tab sheet 76 can be expressed as dimension A + dimension B2. It is about 550-1250 mm, and can be suitably worn for a wide range of wearers as an adult diaper. When the diaper 1 is to be worn by the wearer, for example, the diaper 1 is laid on the futon sideways, and the diaper 1 is positioned on the wearer's buttocks when lying on its back as shown in FIG. Spread it over and put it on the futon. Further, the wearer is turned over and the diaper 1 is arranged sideways on the opposite side, and then the wearer is laid on his / her back again. Thus, when turning the wearer over, it is preferable to arrange the side flap 70 so as to extend straight in the lateral direction X without bending or breaking. Since the side panel 70 extends from both side edges 16 of the diaper 1, this easily extends from the side of the wearer, and the side panel 70 can be pulled to easily position the diaper 1 with respect to the wearer.

  After arranging the diaper 1 on the wearer's buttocks, the front waist region 11 of the diaper 1 is applied to the wearer's abdomen, and the hook element 77 formed on the side panel 70 is hooked on the back sheet 30 in the front waist region 11. At this time, the tab sheet 76 of the side panel 70 is pulled outward in the lateral direction X. Since the elongation percentage of the side panel 70 is about 10 to 40%, the side panel 70 is fully extended at a relatively early stage after starting to be pulled, and cannot be further extended. This is because the extension of the side panel elastic body 73 is regulated by the first and second sheets 71 and 72 having substantially non-extension properties, which is so-called non-extension. Since the stretch stops at a relatively early stage after starting to be pulled in this way, the user always stretches the side panel 70 until it stops stretching when using the diaper 1 and then attaches the hook element 77 to the back sheet 30. Become.

  When there is no stretch stop, it is difficult for the user to know how far the side panel 70 can be pulled, and the diaper 1 may become too tight due to being pulled too much, or the diaper 1 may become loose with less tension. . In particular, in an adult diaper in which the dimension in the lateral direction X of the chassis 10 is increased, the dimension in the lateral direction X of the side panel is generally increased, and the side panel is also easily extended in the lateral direction X. . Therefore, if the feeling of stoppage cannot be obtained at an early stage, the side panel is pulled sideways indefinitely, and it is difficult to understand how far it can be pulled and it is difficult to use. However, according to this embodiment, since the hook element 77 can be attached after the side panel 70 is stretched until it stops stretching, the size of the waist opening formed by the front and rear waist regions 11 and 12 is within a certain range. The diaper 1 does not become extremely tight or loosen every time the diaper is changed. When the elongation percentage of the side panel 70 is smaller than 10%, the adhesiveness of the diaper 1 to the wearer may be lowered, and when it is larger than 40%, it is difficult to obtain a feeling of stoppage of elongation. There is sex.

  Since the diaper 1 as described above is provided with the stretchable side panel 70, it can be used for wearers of various waist sizes. In the case of an adult compared to an infant, the waist size of the wearer covers a wide range. In the case of adults, the waist size varies greatly between men and women, and the physique difference varies greatly between individuals. By using the stretchable side panel 70, it is possible to set a wide range of application to the wearer's waist. In addition, since the hook element 77 can be attached to the wearer with a thin waist and the thick wearer after the side panel 70 is pulled to the non-stretching position, there are many cases such as hospitals and facilities. Even if it is a case where the diaper 1 is made to be worn by the wearer, it can be worn by the same operation. That is, it is not necessary for the wearer to increase or decrease the pulling amount of the side panel, and it can be easily worn.

  Since the extension stress of the side panel 70 is set to 5 N / 50 mm or less, the expansion / contraction region 78 can be easily extended to the end of extension. When the tensile stress is less than 1 N / 50 mm, the adhesion to the wearer when the diaper 1 is worn decreases, and when it is greater than 5 N / 50 mm, the side panel is pulled with a strong force to extend the stretchable region. This is difficult to use because it must be extended.

  The dimension B2 in the lateral direction X of the side panel 70 is about 15 to 25% of the dimension in the lateral direction X of the diaper 1 so that the side panel 70 elastically expands and contracts. That is, since elastic expansion and contraction is performed in a relatively narrow range in the lateral direction X of the diaper 1, it is easy to adjust the extension stop. Further, when the diaper 1 is to be worn, since the wearer lies on his back and the buttocks rest on the diaper 1, and the expansion and contraction of the elastic body is restricted by its weight and friction, the lateral direction X in a wide range of the diaper 1. When elastically expanding and contracting, it is not easy to control the stoppage of the elastic body. However, this inconvenience can be solved by attaching the elastic body only to the side panel 70.

  The side panel 70 continuously extends from the rear end edge 15 to the crotch area 13 in the rear waist region 12, and has a dimension in the longitudinal direction Y of about 180 to 300 mm from the front end edge 70a to the rear end edge 70b. 240 mm (see FIG. 2). Further, the dimension of the rear waist region 12 in the longitudinal direction Y is about 260 to 320 mm, and in this embodiment, it is about 281.8 mm. The dimension of the front waist region 11 in the longitudinal direction Y is about 170 to 240 mm, and in this embodiment, about 193.5 mm. The longitudinal dimension Y of the front and rear waist regions 11 and 12 is a dimension from the front and rear end edges 14 and 15 of the chassis 10 to the boundary with the crotch region 13 where the lateral dimension X is reduced. Since the side panel 70 extends in substantially the entire region in the longitudinal direction Y in the rear waist region 12, it is formed not only by the waist opening formed by the front and rear end edges 14 and 15 but also by the side edge 16 of the crotch region 13. Even in the vicinity of the leg opening, the diaper 1 can be brought into close contact with the wearer. Furthermore, since the side panel 70 is made larger than the dimension in the vertical direction Y of the front waist region 11, the side panel 70 can be connected in the whole area of the front waist region 11 in the vertical direction Y, and the front waist region 11 The whole can be brought into close contact with the wearer. The side panel 70 may be disposed only on the rear edge 15 side or the crotch region 13 side in the rear waist region 12, or a plurality of side panels separated in the longitudinal direction Y are disposed. May be.

  The ratio of the dimension in the vertical direction Y of the side panel 70 to the dimension B1 in the horizontal direction X when the expansion / contraction region 78 of the side panel 70 contracts is about 8.9 to 9.6. In this way, the side panel 70 has a smaller dimension in the horizontal direction X than a dimension in the vertical direction Y. Therefore, even in the case where the side panel 70 is large in the longitudinal direction Y, which is located almost in the longitudinal direction Y of the rear waist region 12, the dimension in the lateral direction X is small, so it is easy to pull in the lateral direction X, and at an early stage. Stretching is reached, and stretchability is imparted at both the waist opening and the leg opening.

  As described above, in the rear waist region 12, when the side panel 70 extends over substantially the entire area in the longitudinal direction Y, the handling is troublesome as compared with the case where the dimension in the longitudinal direction Y of the side panel 70 is small. Also, the connection to the front waist region 11 becomes difficult. In particular, when the side panel 70 extends in a wide range in the lateral direction X, it is more difficult to connect because the side panel 70 must be grasped and the arms must be widened in the lateral direction. However, according to this embodiment, since the side panel 70 is not stretched at a relatively early stage, even if the side panel 70 increases in the longitudinal direction Y, it is easy to connect it to the front waist region 11.

  A leg elastic body 51 is attached to the crotch region 13 of the diaper 1, and the second end edge 51 b is located on the inner side in the lateral direction X of the side panel 70. That is, the second end edge 51 b of the leg elastic body 51 is sandwiched between the pair of side panels 70, the virtual extension line extending in the lateral direction X connecting the front end edges 70 a of the pair of side panels 70, and the leg elastic body 51. And intersect. With this positional relationship, when the side panel 70 is pulled outward in the lateral direction X and connected to the front waist region 11, the second end edge 51b of the leg elastic body 51 is also moved outward in the lateral direction X. The both side edges 16 of the chassis 10 to which the leg elastic body 51 is attached are in close contact with the wearer's legs.

  In this embodiment, the stretchable region is formed in the side panel 70 by a strand-like or string-like elastic body, but the stretchable region can be formed by using a stretchable film, a stretchable fiber nonwoven fabric or the like. Moreover, although the back surface sheet 30 in the front waist region 11 is used as the first connecting element, a loop element or the like can be attached to the front waist region 11 separately. When a loop element or the like is attached to the back sheet 30 as the first connecting element, a breathable plastic sheet or the like can be used as the back sheet 30. Moreover, although the hook element is used as a 2nd connection element, if the connection with the non-skin opposing surface of the front waist region 11 is possible, what is normally used in this kind of field | areas, such as an adhesive tape, will be used. be able to. When an adhesive tape or the like is used as the second connection element, for example, a plastic sheet or the like can be used as the first connection element.

  FIG. 7 shows another embodiment of the present invention. In this embodiment, a waist elastic body 80 extending in the lateral direction X is attached to the rear waist region 12. Since the components other than this feature are the same as those in the above-described embodiment, detailed description thereof is omitted.

  As illustrated, a plurality of waist elastic bodies 80 are attached along the rear edge 15 of the diaper 1. The waist elastic body 80 is attached between the surface sheet 20 and the leak-proof sheet 50 so as to be contractible in an extended state in the lateral direction X. The waist elastic body 80 can be attached by stretching an elastic yarn of 940 dtex about 2.5 times.

  By attaching the waist elastic body 80, the diaper 1 can further adhere to the waist in accordance with the movement of the wearer. By making the stretching stress of the waist elastic body 80 larger than the stretching stress of the side panel elastic body 73, the waist elastic body 80 is stretched after the side panel 70 is prevented from stretching when the diaper 1 is worn. Can be. Since the side panel 70 has a feeling of being stretched out, the effect that the wearer can easily wear the diaper 1 is maintained, and the diaper 1 is easily adhered to the wearer's waist while being worn by the waist elastic body 80. be able to.

  Since the waist elastic body 80 is attached to the center of the rear waist region 12 in the lateral direction X, the wearer's buttocks or waist overlaps the waist elastic body 80 when the diaper 1 is worn. Therefore, extension of the waist elastic body 80 is suppressed by the weight of the wearer, and the waist elastic body 80 can be extended after the side panel 70 is more securely stopped.

  The waist elastic body 80 and the side panel elastic body 73 attached to the expansion / contraction region 78 of the side panel 70 are divided by an inner non-expandable region 79a and the like. That is, the waist elastic body 80 and the side panel elastic body 73 are expanded and contracted separately without being continuous. When these elastic bodies are continuous, when the side panel 70 is pulled in the lateral direction X, both the side panel elastic body 73 and the waist elastic body 80 are stretched. It becomes difficult to obtain. On the other hand, in this embodiment, the waist elastic body 80 and the side panel elastic body 73 are divided by a non-stretchable region or the like, so that it is easy to obtain a feeling of stoppage due to the side panel elastic body 73.

  It should be noted that the extension stress in the region to which the waist elastic body 80 is attached and the extension stress in the region to which the side panel elastic body 73 is attached can be made equal. When the tensile stresses are made equal in this way, the region where the waist elastic body 80 is attached and the stretchable region 78 of the side panel 70 can be stretched substantially evenly.

The disclosure relating to the present invention described above can be summarized at least in the following matters.
The present invention relates to the improvement of the following disposable wearing article 1. The disposable wearing article 1 has a longitudinal direction Y and a lateral direction X, and the skin facing surface and the non-skin facing surface that is the opposite side, the front and rear waist regions 11 and 12, and any one of these front and rear waist regions 11 and 12. A chassis 10 including a first waist region that is one side, a second waist region that is the other side, and a crotch region 13 located between the first and second waist regions, and the first and second waist regions Fastening means for connecting the two to each other.
The fastening means includes a first connecting element located on the non-skin facing surface of the first waist region, and a second connecting element 77 connectable to the first connecting element, wherein the second connecting element is The side panel 70 is attached to a side panel 70 extending in the lateral direction X from the second waist region, and the side panel 70 is elastically stretchable in the lateral direction X.

  This invention is characterized by the following points in the disposable wearing article 1. The side panel 70 includes at least a stretchable region 78 that can be stretched in the lateral direction X, and non-stretchable regions 79 a and 79 b that are located on both outer sides of the stretchable region 78 in the lateral direction X. In the side panel 70, the expansion ratio of the dimension B2 in the lateral direction X when the expansion / contraction region 78 is fully expanded is 10 to 40% of the dimension B1 in the lateral direction X when the expansion / contraction region 78 is contracted. And the tensile stress in the lateral direction X is 1 to 5 N / 50 mm.

The above invention can include at least the following embodiments.
(1) The dimension B2 in the lateral direction X of the side panel 70 at the maximum extension of the stretchable region 78 is 15 to 25% of the dimension A in the lateral direction X of the wearing article 1 (2) The stretching The region 78 includes non-extendable fiber nonwoven fabrics 71 and 72 and a plurality of side panels that are attached to the fiber nonwoven fabrics 71 and 72 so as to be shrinkable in the lateral direction X and are spaced apart in the longitudinal direction Y. And an elastic body 73.
(3) The chassis 10 includes a waist elastic body 80 that can expand and contract in the lateral direction X in the second waist region.
(4) The stretching stress of the stretchable region 78 of the side panel 70 is smaller than that of the region where the waist elastic body 80 is attached.
(5) The chassis 10 has both side edges 16 extending in the longitudinal direction Y, and the first connecting element extends in the lateral direction X from one side edge 16 to the other side edge 16.
(6) The second connection element 77 is a hook element, and the first connection element is a fiber nonwoven fabric to which the hook element can be connected.
(7) At the time of the maximum expansion | extension of the said expansion-contraction area | region 78, the dimension in the said horizontal direction X of the said wearing article 1 is 550-1250 mm.
(8) The dimension in the longitudinal direction Y of the side panel 70 is made larger than the dimension in the longitudinal direction Y of the one waist region.
(9) A leg elastic body 51 is attached to the crotch region 13 such that the leg elastic body 51 can contract in the longitudinal direction Y in a stretched state, and the leg elastic body 51 has a first edge located on the first waist region side. 51a and a second end edge 51b located on the second waist region side, and the second end edge 51b is located in the second waist region and is located on the inner side in the lateral direction X of the side panel 70. Located in.
(10) The side panel elastic body 73 has a thickness of 470 to 700 dtex, is stretched 2 to 3 times in the lateral direction X, and is attached with a pitch in the longitudinal direction Y of 5 to 15 mm.

  In addition to the materials described in this specification, various constituent materials that are normally used in this type of field are limited to the constituent members of the disposable diaper 1 that is an example of a disposable wearing article. Can be used. Further, in the specification of the present invention, the terms “first” and “second” are used merely to distinguish similar elements, positions, and the like.

1 disposable wearing articles (diapers)
DESCRIPTION OF SYMBOLS 10 Chassis 11 Front waist area 12 Rear waist area 13 Crotch area 16 Both sides edge 51 Leg elastic body 51a 1st edge 51b 2nd edge 70 Side panel 71 1st sheet | seat (fiber nonwoven fabric)
72 Second sheet (fiber nonwoven fabric)
73 Side panel elastic body 77 Hook element (second connecting element)
78 Stretchable region 79a Non-stretchable region (nonstretchable region)
79b Outside non-stretchable region (non-stretchable region)
80 Waist elastic body X Horizontal direction Y Vertical direction PP Virtual vertical center line

Claims (12)

It has a vertical direction and a horizontal direction, and is a skin facing surface and a non-skin facing surface that is the opposite side, a front and back waist region, a first waist region that is one of these front and back waist regions, and the other. A chassis including a second waist region, a crotch region located between the first and second waist regions, and fastening means for connecting the first and second waist regions to each other;
The fastening means includes a first connecting element located on the non-skin facing surface of the first waist region, and a second connecting element connectable to the first connecting element, and the second connecting element includes: In the disposable wearing article attached to the side panel extending in the lateral direction from the second waist region, the side panel being elastically stretchable in the lateral direction,
The side panel includes at least a stretchable region that can be stretched in the lateral direction, and a non-stretchable region that is located on both lateral sides of the stretchable region, and the size in the lateral direction when the stretchable region is fully extended. the stretch ratio of, with respect to the dimension in the transverse direction during contraction of the stretchable region, together with 10 to 40% elongation stress in the transverse direction Ri 1~5N / 50mm der,
The lateral dimension of the side panel at the maximum extension of the stretchable region is 15 to 25% of the lateral dimension of the wearing article,
The dimension of the first waist region in the lateral direction is a dimension obtained by adding the dimension of the second waist region in the lateral direction and the dimension of the side panel in the lateral direction when the stretchable region is fully extended. % Of the disposable wearing article, wherein the disposable wearing article is at least% . The dimension in the longitudinal direction of the side panels, disposable wearing article according to claim 1, which is larger than the dimension in the longitudinal direction of the one waist region. A leg elastic body is attached to the crotch region so that the leg elastic body can contract in an elongated state in the longitudinal direction, and the leg elastic body includes a first edge located on the first waist region side and the second waist region. 3. The disposable according to claim 1, further comprising a second end edge located on a side, wherein the second end edge is located in the second waist region and is located on the inner side in the lateral direction of the side panel. Wearing articles. It has a vertical direction and a horizontal direction, and is a skin facing surface and a non-skin facing surface that is the opposite side, a front and back waist region, a first waist region that is one of these front and back waist regions, and the other. A chassis including a second waist region, a crotch region located between the first and second waist regions, and fastening means for connecting the first and second waist regions to each other;
The fastening means includes a first connecting element located on the non-skin facing surface of the first waist region, and a second connecting element connectable to the first connecting element, and the second connecting element includes: In the disposable wearing article attached to the side panel extending in the lateral direction from the second waist region, the side panel being elastically stretchable in the lateral direction,
The side panel includes at least a stretchable region that can be stretched in the lateral direction, and a non-stretchable region that is located on both lateral sides of the stretchable region, and the size in the lateral direction when the stretchable region is fully extended. the stretch ratio of, with respect to the dimension in the transverse direction during contraction of the stretchable region, together with 10 to 40% elongation stress in the transverse direction Ri 1~5N / 50mm der,
The chassis has a leg elastic body that is positioned outside the absorbent body in the lateral direction and attached to be retractable in the longitudinal direction.
The leg elastic body has a first end edge located on the first waist region side and a second end edge located on the second waist region side, and the second end edge is the second waist edge. Located in the region and located inside the lateral direction of the side panel,
The crotch region has a smaller lateral dimension than the first and second waist regions,
The disposable wearing article , wherein a dimension of the side panel in the longitudinal direction is larger than a dimension of the first waist region in the longitudinal direction . The disposable wearing article according to claim 4 , wherein a dimension in the lateral direction of the side panel at the maximum extension of the stretchable region is 15 to 25% of a dimension in the lateral direction of the wearing article. The stretchable region includes a non-extensible fiber nonwoven fabric and a plurality of side panel elastic bodies that are attached to the fiber nonwoven fabric so as to be shrinkable in a stretched state in the lateral direction and are spaced apart in the longitudinal direction. 1-5 disposable wearing article of the mounting come to any of the. The disposable wearing article according to any one of claims 1 to 5 , wherein the chassis has a waist elastic body that can expand and contract in the lateral direction in the second waist region. The disposable wearing article according to claim 7 , wherein an extension stress of the stretchable region of the side panel is smaller than that of a region to which the waist elastic body is attached. The chassis has side edges extending in the longitudinal direction;
The disposable wearing article according to any one of claims 1 to 8 , wherein the first connecting element extends in the lateral direction from one side edge to the other side edge. The disposable wearing article according to any one of claims 1 to 9 , wherein the second connecting element is a hook element, and the first connecting element is a fiber nonwoven fabric to which the hook element can be connected. The disposable wearing article according to any one of claims 1 to 10 , wherein a dimension of the wearing article in the lateral direction is 550 to 1250 mm at the maximum extension of the stretchable region. The disposable wearing article according to claim 6, wherein the side panel elastic body has a thickness of 470 to 700 dtex, is stretched 2-3 times in the lateral direction, and is attached with a pitch of 5 to 15 mm in the longitudinal direction. .

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