JP6195300B2 - Unfoldable disposable diapers - Google Patents

Description

  The present invention relates to a deployable disposable diaper for adults or children.

  In general, a deployable disposable diaper is worn by engaging engagement members attached to both side portions of a back region with non-skin facing surfaces of a ventral region. When there is a portion engaged with the ventral region in this way, the engaged portion may be rubbed against the wearer's groin, stomach, or leg. If it is rubbed in this way, redness is generated and the usability is lowered.

  As another technique, Patent Document 1 has an engagement member having a pair of mechanical hook-and-loop fasteners in the back side region, and the engagement member in the back side region is sandwiched in the ventral region. An unfoldable disposable diaper having a receiving member with a mechanical hook-and-loop fastener to be fixed is disclosed. According to the deployable disposable diaper described in Patent Document 1, since the engagement member in the dorsal region is fixed and worn so as to be sandwiched between the receiving members in the ventral region, the mechanical hook-and-loop fasteners are in the other direction. Engaging and improving the fixing force.

  However, even in the deployable disposable diaper described in Patent Document 1, the portion where the mechanical hook-and-loop fastener provided in the engagement member in the dorsal region and the mechanical hook-and-loop fastener provided in the receiving member in the ventral region are engaged. It exists in a side area | region, and this engaged part may rub against a wearer's groin, stomach, or a leg, and a usability | use_condition will fall.

  The present applicant has previously proposed a deployable disposable diaper that can be easily worn regardless of whether the side on which the fastening tape is provided is positioned on either the back side or the abdomen side of the wearer ( Patent Document 2). According to the deployable disposable diaper described in Patent Document 2, if the side on which the fastening tape is provided is the wearer's ventral side, the portion where the fastening tape engages becomes the wearer's back side, and the engagement There is almost no case where the part to be rubbed against the wearer's groin, stomach, or leg, and redness due to rubbing hardly occurs and the feeling of use is improved.

JP-T-2004-505672 Japanese Patent Laid-Open No. 2004-290646

  However, according to the unfoldable disposable diaper described in Patent Document 2, it will be worn without image of the shape of the diaper after wearing. If you can imagine the shape of a diaper after wearing it, you will feel more secure. There was room for further improvement in response to the need to have such a sense of security.

  Accordingly, an object of the present invention is to provide a deployable disposable diaper that can eliminate the drawbacks of the prior art described above.

  The present invention is a deployable disposable diaper comprising a vertically long absorbent main body divided into a ventral region, a back region, and a crotch region, each of both side portions along the longitudinal direction of the absorbent main body in the back region A fixing member extending outward in the width direction, and one end portion fixed to the non-skin facing surface outside the width direction center of the absorbent main body in the ventral region, and the other end portion being a free end portion The fixing member is provided with a skin-side fixing material on its skin-facing surface and a non-skin-side fixing material on its non-skin-facing surface, and is worn In some cases, the extension member and the fastening member are fixed in a palm shape via the skin-side fixing material, and the extension member and the fastening member fixed in a palm shape are on the dorsal region side. To the non-skin facing surface of the dorsal region of the absorbent main body through the non-skin-side fixing material There is provided a disposable diaper deployment type to be constant.

  According to the present invention, the fixed part between the dorsal region and the ventral region is not easily rubbed on the wearer's skin, is less likely to cause redness due to rubbing, and can be reassured that the shape of a diaper after wearing can be imaged when worn Is obtained and the feeling of use is improved.

FIG. 1 is a perspective view of an unfolded disposable diaper according to the first embodiment of the present invention. FIG. 2 is a plan view of the unfolded disposable diaper shown in FIG. 1 as viewed from the top sheet side. FIG. 3 is a plan view of the unfolded disposable diaper shown in FIG. 1 as viewed from the back sheet side. FIG. 4 is a diagram illustrating a procedure for wearing the unfolded disposable diaper shown in FIG. 1. FIG. 5 is a perspective view of an unfolded disposable diaper according to the second embodiment of the present invention.

Hereinafter, the present invention will be described based on a preferred first embodiment with reference to the drawings.
The unfolded disposable diaper (hereinafter also referred to as “diaper 1A”) of the first embodiment is divided into a ventral region A, a dorsal region B, and a crotch region C as shown in FIGS. A vertically long absorbent main body 10 is provided. Here, the ventral region A is a region positioned on the wearer's ventral side when worn, the back region B is a region positioned on the wearer's dorsal side when worn, and the crotch region C is ventral side This is an area arranged between the area A and the back area B.
In the present specification, the “skin facing surface” is a surface arranged on the skin side of the wearer during wearing, among the front and back surfaces of each member such as the surface sheet 2 to be described later constituting the absorbent main body 10, The “non-skin-facing surface” is a surface that is directed to the side opposite to the skin side of the wearer when worn among the front and back surfaces of each member such as a surface sheet 2 described later that constitutes the absorbent main body 10.
Further, the “Y direction” shown in each figure is a direction parallel to the center line CL extending in the longitudinal direction of the absorbent main body 10. The “X direction” shown in each figure is a direction orthogonal to the center line CL, and is also the same direction as the width direction of the absorbent main body 10.

  As shown in FIGS. 1 to 3, the diaper 1 </ b> A is wider in the width direction (X direction) than the left and right side edges of the crotch region C in the left and right side edges of the ventral region A and the right and left side edges of the back side region B. It extends to. The left and right side edges of the crotch region C are curved in an arc shape inward in the width direction (X direction), and the central part in the longitudinal direction (Y direction) is constricted inward as a whole. Yes.

  2 and 3, the absorbent main body 10 of the diaper 1 </ b> A has a liquid-permeable surface sheet 2 disposed on the skin facing surface side and a liquid-impermeable surface disposed on the non-skin facing surface side. A back sheet 3 and an absorbent body 4 disposed between the two sheets 2 and 3 are provided.

  In the diaper 1A, as shown in FIGS. 2 and 3, the top sheet 2 and the back sheet 3 respectively extend outward from the left and right side edges and front and rear end edges of the absorbent body 4 that is long in the longitudinal direction (Y direction). I'm out. As shown in FIG. 2, the surface sheet 2 has the same longitudinal dimension (Y direction) as the longitudinal direction (Y direction) of the back sheet 3, but its width direction (X direction). However, it is smaller than the dimension of the back surface sheet 3 in the width direction (X direction). Each of the top sheet 2 and the back sheet 3 is joined to each other directly or through another member at the extended portion extending outward from the periphery of the absorbent body 4, and sandwiches and fixes the absorbent body 4. doing. The absorbent body 4 includes an absorbent core (not shown) formed by holding a water-absorbing polymer particle in an aggregate of fibers such as pulp fibers, and a core wrap sheet (not shown) that covers the absorbent core (not shown). ).

  As shown in FIGS. 2 and 3, a three-dimensional gather forming sheet 52 having an elastic member 51 fixed in an extended state in the Y direction is provided on each side portion along the longitudinal direction (Y direction) of the diaper 1 </ b> A. It arrange | positions and is fixed to the side part of the sheet | seat 2, and a pair of solid gathers 5 and 5 (refer FIG. 1) are formed by this. In addition, as shown in FIGS. 2 and 3, leg elastic members 53 for forming leg gathers are arranged in an extended state in the Y direction on both side portions along the longitudinal direction (Y direction) of the diaper 1 </ b> A. Leg gathers are formed by the contraction of the leg elastic members 53. A waist elastic member for forming waist gathers is arranged in the X direction in the longitudinal direction (Y direction) end of the diaper 1A on the back side region B side, and the waist elastic member is contracted by the contraction of the waist elastic member. A gather may be formed.

  As shown in FIGS. 1 to 3, the diaper 1 </ b> A extends outward in the width direction (X direction) from both side portions 10 s and 10 s along the longitudinal direction (Y direction) of the absorbent main body 10 in the back region B. A fixing member 6 is provided. More specifically, the fastening member 6 of the diaper 1 </ b> A has one end 61 that is outward in the width direction (X direction) from the side edge of the absorbent body 4 in the side portion 10 s of the back side region B of the absorbent main body 10. The other end 62 side extends from the outer edge of the side portion 10s of the absorbent main body 10 outward in the width direction (X direction). The shape of the fastening member 6 is not particularly limited, but the diaper 1 </ b> A has a strip shape with a constant width. The fastening member 6 of the diaper 1 </ b> A preferably has a width of about 10 mm or more and 50 mm or less, and has an extension length that extends outward in the width direction (X direction) from the outer edge of the side portion 10 s of the absorbent main body 10. It is preferably about 30 mm or more and 120 mm or less. In the diaper 1 </ b> A, one end portion 61 of the fastening member 6 is fixed between the back sheet 3 and the three-dimensional gather forming sheet 52 in the side portion 10 s of the absorbent main body 10. In addition, the one end part 61 of the fastening member 6 should just be fixed to the side part 10s of the absorptive main body 10, for example in the side part 10s other than between the back surface sheet 3 and the sheet | seat 52 for three-dimensional gather formation. It may be fixed to the non-skin facing surface of the back sheet 3.

  The fixing member 6 is provided with a skin-side fixing material 63 on the skin-facing surface and a non-skin-side fixing material 64 on the non-skin-facing surface. In the diaper 1 </ b> A, the position of the non-skin-side fixing material 64 disposed on the fastening member 6 is outward from the position of the skin-side fixing material 63 disposed on the fastening member 6. In addition, regarding the positions of the skin-side adhesive material 63 and the non-skin-side adhesive material 64, the position of the skin-side adhesive material 63 disposed on the fastening member 6 is the non-skin-side adhesive material 64 disposed on the fastening member 6. From the viewpoint of ease of handling, the non-skin facing of the fastening member 6 corresponding to the position of the skin-side fixing material 63 disposed on the skin facing surface of the fastening member 6 may be provided. The non-skin side fixing material 64 may be arranged at the position of the surface.

The size of the skin-side fixing material 63 is not particularly limited, but the ratio of the area of the skin-side fixing material 63 to the area of the portion extending from the outer edge of the side portion 10s of the absorbent main body 10 in the fastening member 6 is as follows. It is preferably about 30% to 70%, and more preferably about 40% to 60%.
The size of the non-skin-side fixing material 64 is not particularly limited, but the area of the non-skin-side fixing material 64 relative to the area of the portion extending from the outer edge of the side portion 10s of the absorbent main body 10 in the fastening member 6 is as follows. The ratio is preferably about 30% to 100%, and more preferably about 40% to 80%.

  Moreover, as shown to FIGS. 1-3, as for the diaper 1A, the one end part 71 is fixed to the non-skin opposing surface of the outer side from the position of the center of the width direction (X direction) of the absorptive main body 10 in the ventral | abdominal area A. The other end portion 72 has an extending member 7 that is a free end portion. More specifically, the extending member 7 of the diaper 1A has a diaper whose one end 71 is from the center in the width direction (X direction) of the ventral region A of the absorbent main body 10, that is, from the center line CL. 1 is fixed between the outer edges of both side portions 10s, 10s along the longitudinal direction (Y direction) of the absorbent main body 10 by an adhesive or fusion, and the other end portion 72 is a free end portion. In particular, in the diaper 1 </ b> A, one end 71 of the extending member 7 is fixed to the non-skin facing surface of the absorbent body 10 at the position where the absorbent body 4 exists in the ventral region A by an adhesive or fusion. Yes. The shape of the extending member 7 is not particularly limited, but the diaper 1 </ b> A has a strip shape with a constant width. The extending member 7 of the diaper 1A preferably has a width of about 10 mm or more and 50 mm or less. The width of the fastening member 6 of the diaper 1A described above is improved, and the handling member 6 is easily handled at the time of palming. From the viewpoint of being covered with the extending member 7 and not easily exposed to the non-skin surface side, the extending member 7 is preferably wider. The extension member 7 of the diaper 1A preferably has an extension length of the other end 72 which is a free end of about 20 mm or more and 80 mm or less, and the extension length of the fastening member 6 of the diaper 1A described above. From the viewpoint of ease of handling at the time of hand-joining, the same length is preferable.

  As described above, the extending member 7 of the diaper 1 </ b> A is fixed to the non-skin facing surface of the absorbent main body 10 at the position where the absorbent body 4 exists, as shown in FIGS. 2 and 3. However, from the viewpoint of ease of handling, one end portion 71 of the extending member 7 extends from the position (center line CL) in the center of the diaper 1A in the width direction (X direction) to the longitudinal direction (Y It suffices to be disposed between the outer edges of the side portions 10s along the direction).

  In the diaper 1A, as shown in FIGS. 2 and 3, the extending member 7 has a distal end side on the other end 72 side opposite to the surface fixed to the fastening member 6 in the shape of a palm. A fixing material 73 is provided. The distal-end-side fixing material 73 is provided near the distal end of the other end 72 that is a free end. The size of the tip-side fixing material 73 is not particularly limited, but the ratio of the area of the tip-side fixing material 73 to the area of the extending member 7 excluding the fixed one end 71 is 30. % Is preferably about 70% to 70%, more preferably about 40% to 60%.

As shown in FIGS. 1 to 3, the extending member 7 of the diaper 1 </ b> A is folded in two so that the free end portion (other end portion 72) side is separated from the back sheet 3 before use. The other end 72 side of the extending member 7 is temporarily fixed to the abdominal region A of the absorbent main body 10 through the fixing material 73. When folded in this way, the extending member 7 is less likely to get in the way. In the diaper 1 </ b> A before use, the other end portion 72 of the extending member 7 folded in half as described above is temporarily fixed on the one end portion 71 of the extending member 7 via the distal end side adhering material 73. . Even if the other end 72 of the extended extension member 7 is not temporarily fixed on the one end 71 of the extension member 7 via the distal end side fixing material 73, What is necessary is just to be temporarily fixed to the side area | region A, for example, may be temporarily fixed to the non-skin opposing surface of the abdominal side area | region A of the absorptive main body 10 except the part by which the extending member 7 was distribute | arranged. Temporary fixing refers to fixing to such an extent that it can be easily peeled off by pulling with a finger at the time of use, can be temporarily fixed again, and can be repeatedly temporarily fixed without damaging a temporarily fixed part such as tearing.
Similarly, it is preferable that the fastening member 6 is folded and temporarily fixed before use so that it does not get in the way. In the case of folding, it is preferably three-folded, folded and folded at the inner side of the skin-side fixing material 63, and further folded at the inner side of the non-skin-side fixing material 64 to fold the non-skin-side fixing material 64. Temporarily fix the dorsal non-skin side. Alternatively, the inner skin of the non-skin-side fixing material 64 is folded and folded, and the inner side of the skin-side fixing material 63 is folded and folded to temporarily place the skin-side fixing material 63 on the back sheet side of the topsheet. It may be fixed.

The material for forming the diaper 1A of the first embodiment will be described.
As the surface sheet 2, the absorbent body 4 and the three-dimensional gather forming sheet 52, any sheet can be used without particular limitation as long as it is usually used for absorbent articles such as disposable diapers. As the surface sheet 2, for example, a liquid-permeable nonwoven fabric having a single layer or a multilayer structure, a liquid-permeable apertured film, or the like can be used. As the absorbent body 4, for example, an aggregate of fibers such as pulp fibers (which may be a nonwoven fabric) or an absorbent core in which particles of a water-absorbing polymer are held is made of water-permeable thin paper or nonwoven fabric. Those coated with a core wrap sheet can be used. Further, as the three-dimensional gather forming sheet 52, for example, a liquid-impermeable or water-repellent resin film, a laminate of the resin film and a nonwoven fabric, or the like can be used. Examples of the elastic member 51 and the leg elastic member 53 that form a three-dimensional gather include natural rubber, polyurethane, polystyrene-polyisoprene copolymer, polystyrene-polybutadiene copolymer, and polyethylene-α-olefin copolymer such as ethyl acrylate-ethylene. A thread-like stretchable material made of, for example, can be used.

As the skin-side fixing material 63 and the non-skin-side fixing material 64, a fastening tape composed of a sheet base material and a hook material can be used. Examples of the hook material for forming the fastening tape include “Magic Tape (registered trademark)” (manufactured by Kuraray Co., Ltd.), “Quicklon (registered trademark)” (manufactured by YKK), and “Majikurosu (registered trademark)” (Kanebo Bell). The male member etc. in the touch company etc. can be used. As the sheet base material, synthetic resins such as polyethylene, polypropylene, polyethylene terephthalate, etc., and non-woven fabric made of a composite material of two or more of these synthetic resins can be used. As the engaging projection (not shown) of the hook material, a hook-shaped or hook-shaped one can be used.
Moreover, as the front end side fixing material 73, an adhesive or a fastening tape made of a sheet base material and a hook material can be used. Any adhesive can be used without particular limitation as long as it is usually used for absorbent articles such as disposable diapers. When the tip side fixing material 73 is an adhesive, an easily peeled film or non-woven fabric coated with a silicon-based release agent or the like is used on the target surface to which the tip side fixing material 73 is temporarily engaged. As the hook material for forming the fastening tape, for example, “Magic tape (registered trademark)” (manufactured by Kuraray Co., Ltd.), “Quicklon (registered trademark)”, as with the skin-side fixing material 63 and the non-skin-side fixing material 64. A male member or the like in YKK Corporation (manufactured by Kanebo Bell Touch Co., Ltd.) or the like can be used. As the sheet base material that is temporarily engaged with the hook material, synthetic resins such as polyethylene, polypropylene, polyethylene terephthalate, and the like, and nonwoven fabrics made of a composite material of two or more of these synthetic resins can be used. As the engaging projection (not shown) of the hook material, a hook-shaped or hook-shaped one can be used.

As the back sheet 3, when the front end side fixing material 73 is an adhesive, it is usually a liquid-impermeable or water-repellent resin film used for absorbent articles such as disposable diapers, or the resin film and a nonwoven fabric. And the like can be used. Use a liquid-impermeable or water-repellent resin film or the like in which a female member in various known mechanical hook-and-loop fasteners is partially arranged only at a position where the fastening material of the fastening member 6 on the back side is fixed. Can do.
Further, when the front end side fixing material 73 is a fastening tape (hook member of a mechanical hook-and-loop fastener), a target surface to which the front end side fixing material 73 is temporarily engaged is pressed by a hook material of the fastening tape. A non-woven fabric that can be attached to a material, such as a non-skin-bonded or water-repellent resin film, is applied to the entire surface of the non-skin facing surface of a liquid-impermeable or water-repellent resin film. A liquid-impermeable or water-repellent resin film or the like in which a female member in various known mechanical surface fasteners is partially arranged can be used only at a position where the hook member of the fastening tape is fixed. .

Each of the fastening member 6 and the extending member 7 preferably has elasticity, and preferably has elasticity in at least the extending direction thereof. As a sheet having elasticity, an elastic film obtained from a polyolefin resin obtained by using a urethane or metallocene catalyst, a polyester-based elastic film, or a composite sheet in which a nonwoven fabric is bonded to both surfaces of an intermediate layer made of an elastomer material, etc. Can be used. When the composite sheet is used as the extending member 7 when the skin-side fixing material 63 of the fastening member 6 is a fastening tape, the hook material of the fastening tape is pressed as the nonwoven fabric constituting the composite sheet. Thus, a non-woven fabric capable of fixing the hook material, for example, a non-woven fabric manufactured by each method such as spun bond, air-through, thermal bond, chemical bond and the like can be used. Incidentally, fastening members 6 and extending member 7, when a non-stretchable is not particularly limited basis weight 25g / m ² ~100g / m ² approximately nonwoven fabric conventionally used in this type of article When the skin-side fixing material 63 of the fastening member 6 is a fastening tape, a non-woven fabric capable of fastening the above-described fastening tape hook material can be used as the extending member 7.

  Each member can be fixed using an adhesive or heat fusion. As the adhesive used, any adhesive that can be used for absorbent articles such as disposable diapers can be used without particular limitation. For example, a hot melt adhesive can be used. Examples of the hot melt adhesive include blocks such as styrene-isoprene-styrene block copolymer (SIS), styrene-butadiene-styrene block copolymer (SBS), and styrene-ethylene-butylene-styrene copolymer (SEBS). Copolymer-based hot melt adhesives may be mentioned. As heat fusion, if it is used for absorbent articles, such as a disposable diaper, it can use without a restriction | limiting especially, For example, a high frequency seal | sticker and an ultrasonic seal | sticker can be used.

The effect at the time of using the diaper 1A of 1st Embodiment of this invention mentioned above is demonstrated.
When the diaper 1A is worn, as shown in FIG. 4, the extending member 7 and the fastening member 6 are fixed in a palm shape via a skin-side fixing material 63, and the extending member is fixed in a palm shape. 7 and the fastening member 6 are folded back to the back region B side and worn so as to be fixed to the non-skin facing surface of the back region B of the absorbent main body 10 via the non-skin side fixing material 64. The Specifically, first, as shown in FIG. 4 (a), the diaper 1A is applied to the wearer's crotch portion, and as shown in FIG. 4 (b), each extending member 7 arranged in the ventral region A is provided. And each fastening member 6 arranged in the back region B are fixed in a palm-like shape via a skin-side fixing material 63 on the skin-facing surface side of the fastening member 6, so that a diaper after wearing at the time of wearing Shape the image of Thus, since the diaper 1A can image the shape of the diaper after wearing at the time of wear, a sense of security improves.

  Thereafter, as shown in FIG. 4 (c), the diaper 1 </ b> A folds the extending member 7 and the fastening member 6 fixed in a palm shape toward the back region B side, and the non-skin facing surface of the fastening member 6. It is worn by being fixed to the non-skin facing surface of the dorsal region B of the absorbent main body 10 via the non-skin side fixing material 64 on the side. When worn in this way, the fixed portion by the non-skin-side fixing material 64 is hardly rubbed against the wearer's groin, stomach, or leg, and redness due to rubbing hardly occurs and the feeling of use improves.

  In particular, the extending member 7 and the fastening member 6 fixed in a palmar shape are connected to the wearer's iliac bone on the non-skin-facing surface of the dorsal region B of the absorbent main body 10 via the non-skin-side fixing material 64. If it is fixed at a position corresponding to the vicinity of the ridge, there is almost no case of rubbing the groin, stomach, or leg, redness due to rubbing hardly occurs, and an effect of improving the fit between the wearer and the diaper is achieved. Therefore, from the viewpoint of adjusting the fixing position to a position corresponding to the vicinity of the wearer's iliac crest, it is preferable that the fastening member 6 and the extending member 7 each have elasticity.

Next, an unfolded disposable diaper 1B (hereinafter also referred to as “diaper 1B”) according to a second embodiment of the present invention will be described with reference to FIG.
About the diaper 1B of 2nd Embodiment, a different point from the diaper 1A of 1st Embodiment is demonstrated. The point which is not demonstrated especially is the same as that of the diaper 1A, and description of the diaper 1A is applied suitably.

  As shown in FIG. 5, the diaper 1 </ b> B is provided with a plurality of extending members 7 (preferably 2 or more and 5 or less), and one end portion 71 of each extending member 7 is in the width direction (X direction). Are arranged side by side. More specifically, in the diaper 1B, the extending member 7 has a width direction (X direction) center (center line CL) of the absorbent main body 10 in the ventral region A from both side portions 10s, Between each of the 10s outer edges, there are two inner extending members 7a near the center line CL and outer edge extending members 7b on the outer side in the width direction (X direction). The inner extension member 7a and the outer edge member 7b of each extension member 7 have one end 71 at the outer edge of the side portion 10s along the longitudinal direction (Y direction) of the absorbent main body 10 of the diaper 1 from the center line CL. Between, it arrange | positions on the non-skin opposing surface of the absorptive main body 10 along with the straight line in the width direction (X direction). More specifically, in the diaper 1B, one end 71 of the inner extension member 7a and one end 71 of the outer edge member 7b are fixed to the non-skin facing surface of the absorbent main body 10 where the absorbent body 4 exists. Has been. The distance between the one end portion 71 of the inner extending member 7a and the one end portion 71 of the outer edge member 7b is preferably about 0 mm to 15 mm. In the diaper 1B, the width of the inner extension member 7a and the width of the outer edge member 7b are the same, but may be different.

  In the diaper 1 </ b> B, as shown in FIG. 5, the inner extension member 7 a and the outer edge member 7 b of each extension member 7 each have a distal end side adhering material 73 on the other end portion 72 side. Each of the inner extension member 7a and the outer edge member 7b is folded in two so that the free end portion (the other end portion 72) side is separated from the back sheet 3 before use, and the leading end side fixing material 73 is attached. The other end 72 side is temporarily fixed to the ventral region A of the absorbent main body 10. More specifically, in the diaper 1B, the other end 72 of the inner extending member 7a is temporarily fixed to the ventral region A of the absorbent main body 10 via the distal end side fixing material 73, and the outer protruding member 7b. The other end portion 72 is temporarily fixed on the inner extending member 7 a folded in half via the front end side fixing material 73. As described above, the outer edge member 7b has the other end 72 side on the ventral region A of the absorbent main body 10 via the distal end side fixing member 73 and the folded inner extension member 7a before use. Is temporarily fixed. In the diaper 1 </ b> B, as described above, the other end portion 72 of the outer edge member 7 b is temporarily fixed on the inner extension member 7 a folded in half via the front end side fixing material 73. When the distance between the one end 71 of the inner extending member 7a and the one end 71 of the outer extending member 7b is sufficiently wide, not only the other end 72 of the inner extending member 7a but also the outer extending member The other end portion 72 of 7 b may also be temporarily fixed on the non-skin facing surface of the abdominal side region A of the absorbent main body 10 via the distal end side adhering material 73.

The effect at the time of using the diaper 1B of 2nd Embodiment of this invention mentioned above is demonstrated.
About the effect of the diaper 1B of 2nd Embodiment, a different point from the effect of the diaper 1A of 1st Embodiment is demonstrated. The point which is not demonstrated in particular is the same as the effect of the diaper 1A of the first embodiment, and the description of the effect of the unfolded disposable diaper 1A of the first embodiment is applied as appropriate.

  As shown in FIG. 5, the diaper 1 </ b> B of the second embodiment is provided with a plurality of extending members 7 in the ventral region A of the absorbent main body 10. For example, the size of the wearer is relatively small. In this case, each inner extension member 7a near the center line CL arranged in the ventral region A and each fastening member 6 arranged in the back region B can be used to wear the wearer. In the case where the size is relatively large, the outer extending members 7b on the outer side in the width direction (X direction) arranged in the ventral region A and the fastening members 6 arranged in the back region B are provided. Can be used and worn. In this way, the diaper 1B can use the plurality of extending members 7 in accordance with the size of the wearer, and the wearing feeling is improved.

The unfoldable disposable diaper of the present invention is not limited to the diaper 1A of the first embodiment and the diaper 1B of the second embodiment described above, and can be changed as appropriate.
For example, the extending member 7 included in the diaper 1A described above and the inner extending member 7a and the outer extending member 7b included in the diaper 1B described above are respectively provided at one end of the band-shaped member as illustrated in FIGS. The non-skin facing surface 71 is fixed to the ventral region A of the absorbent main body 10 by an adhesive or fusion, but the one end portion 71 may have a bifurcated shape. Thus, if the one end part 71 divided into two forks is fixed to the ventral region A of the absorbent main body 10, the fixing strength is improved.

  Moreover, the diapers 1A and 1B are arranged in a stretched state in the X direction with a waist elastic member for forming waist gathers at the longitudinal direction (Y direction) end on the back region B side, and the waist elastic member When the waist gathers are formed by contraction, it is preferable that one end portion 61 of the fastening member 6 is fixed on the waist elastic member from the viewpoint of size adjustment.

  The following unfolded disposable diaper is further disclosed regarding the embodiment mentioned above.

<1>
A deployable disposable diaper having a vertically long absorbent main body divided into a ventral region, a dorsal region, and a crotch region, from both sides along the longitudinal direction of the absorbent main body in the dorsal region, in the width direction One end is fixed to the non-skin facing surface outside the fastening member extending outward and the widthwise center position of the absorbent main body in the ventral region, and the other end is a free end. An extension member,
The fastening member is provided with a skin-side fixing material on the skin-facing surface, and a non-skin-side fixing material is provided on the non-skin-facing surface. The extension member and the fastening member are fixed in a palm shape, and the extension member and the fastening member fixed in a palm shape are folded back to the dorsal region side, and the non-skin side fixing material is interposed therebetween. A deployable disposable diaper that is fixed to the non-skin facing surface of the dorsal region of the absorbent main body.

<2>
The disposable diaper according to <1>, wherein the skin-side fixing material and the non-skin-side fixing material in the fastening member are a hook material of a mechanical hook-and-loop fastener.
<3>
Each of the extending member and the fastening member is a deployable disposable diaper according to <1> or <2>, which has elasticity.
<4>
The extending type disposable diaper according to any one of <1> to <3>, wherein a plurality of the extending members are provided, and one end portions of the extending members are arranged side by side in the width direction. .
<5>
In the extending member, one end portion of the extending member is disposed between side outer edges along the longitudinal direction of the absorbent main body from a position in the width direction center of the absorbent main body. 4> The disposable disposable diaper described in any one of 4>.
<6>
The extension member is provided with a tip-side fixing material on a surface opposite to the surface fixed to the fastening member on the other end side, the tip-side fixing material being a machine It is a hook material or an adhesive for an artificial surface fastener, and before use, the other end portion side of the extending member is temporarily fixed to the abdominal side region of the absorbent main body through the tip side fixing material. The unfoldable disposable diaper according to any one of <1> to <5>.
<7>
<6> The tip side fixing material is a hook material of a mechanical hook-and-loop fastener, and a target surface temporarily fixed with the tip side fixing material before use is a nonwoven fabric that can be engaged with the hook material. Disposable diapers.
<8>
The disposable diaper according to <6>, wherein the tip side fixing material is an adhesive, and a target surface temporarily fixed with the tip side fixing material before use is a peeled film or a nonwoven fabric.
<9>
The absorbent main body includes a liquid-permeable surface sheet disposed on the skin facing surface side, a liquid-impermeable back sheet disposed on the non-skin facing surface side, and an absorber disposed between the both sheets. And
Each of the top sheet and the back sheet is joined to each other directly or through another member at an extended portion extending outward from the periphery of the absorber, and the absorber is sandwiched and fixed. <1>-<8> which is the expansion | deployment type disposable diaper any one.
<10>
The disposable diaper according to any one of <1> to <9>, in which a three-dimensional gather and a leg gather are formed.

<11>
The fastening member has a width of 10 mm or more and 50 mm or less, and an extension length that extends outward in the width direction (X direction) from the side outer edge of the absorbent main body is 30 mm or more and 120 mm or less <1. The disposable diaper according to any one of> to <10>.
<12>
The absorbent main body includes a liquid-permeable surface sheet disposed on the skin facing surface side, a liquid-impermeable back sheet disposed on the non-skin facing surface side, and an absorber disposed between the both sheets. And
One end of the fastening member is fixed between the back sheet and the three-dimensional gather forming sheet at the side of the absorbent main body, or the non-skin of the back sheet at the side of the absorbent main body The disposable diaper according to any one of <1> to <11>, which is fixed to the facing surface.
<13>
Any one of <1> to <12>, wherein the position of the non-skin-side fixing material arranged on the fastening member is outward from the position of the skin-side fixing material arranged on the fastening member. The disposable diaper according to 1.
<14>
The non-skin-side fixing material is arranged at the position of the non-skin-facing surface of the fastening member corresponding to the position of the skin-side fixing material arranged on the skin-facing surface of the fastening member <1> to The disposable diaper according to any one of <13>.
<15>
In the skin-side fixing material, the ratio of the area of the skin-side fixing material to the area of the portion extending from the side outer edge of the absorbent main body in the fastening member is preferably 30% or more and 70% or less. Is a disposable diaper according to any one of <1> to <14>, which is 40% or more and 60% or less.
<16>
In the non-skin-side fixing material, the ratio of the area of the non-skin-side fixing material to the area of the portion extending from the side outer edge of the absorbent main body in the fastening member is 30% or more and 100% or less. The disposable diaper according to any one of <1> to <15>, preferably 40% to 80%.
<17>
Any one of <1> to <16>, in which one end portion of the extending member is fixed to the non-skin facing surface at a position where the absorbent body exists in the abdominal region of the absorbent main body by an adhesive or fusion. The disposable diaper according to claim 1.
<18>
The said extending member is a disposable diaper any one of <1>-<17> which has a strip | belt shape with a fixed width | variety, and the width | variety is 10 mm or more and 50 mm or less.
<19>
The disposable diaper according to any one of <1> to <18>, wherein the extending member is wider than the width of the fastening member.

<20>
The distal-end-side fixing material is provided near the distal end of the other end portion of the extending member that is a free end portion, and the distal-end-side fixing material excludes one fixed end portion of the extending member. Any one of <6> to <19>, wherein the ratio of the area of the tip-side fixing material to the area of the extending portion is 30% to 70%, preferably 40% to 60%. Disposable diapers described in 1.
<21>
As the skin side fixing material and the non-skin side fixing material, a fastening tape comprising a sheet base material and a hook material is used, and as the hook material forming the fastening tape, a male member is used, and the sheet base material is used. As a disposable diaper according to any one of <1> to <20>, which uses a synthetic resin of polyethylene, polypropylene, or polyethylene terephthalate, and a nonwoven fabric made of a composite material of two or more of these synthetic resins.
<22>
As the front end side fixing material, an adhesive or a fastening tape made of a sheet base material and a hook material was used. In the case of the adhesive, the target surface to which the front end side fixing material was temporarily engaged was peeled off. As a hook material for forming the fastening tape using a film or a non-woven fabric, a male member is used, and a sheet base material temporarily engaged with the hook material is a synthetic resin of polyethylene, polypropylene, or polyethylene terephthalate, and The disposable diaper according to any one of <1> to <21>, wherein a nonwoven fabric made of a composite material of two or more of these synthetic resins is used.
<23>
The absorbent main body includes a liquid-permeable surface sheet disposed on the skin facing surface side, a liquid-impermeable back sheet disposed on the non-skin facing surface side, and an absorber disposed between the both sheets. And
The front-end-side fixing material is an adhesive, and the back sheet uses a liquid-impermeable or water-repellent resin film, or a laminate of the resin film and a nonwoven fabric, and the fastening member fastening tape on the back side. Disposable according to any one of <1> to <22>, wherein a liquid-impermeable or water-repellent resin film in which a female member in a mechanical hook-and-loop fastener is partially disposed only at a predetermined position for fixing the hook material is used. Diapers.
<24>
The absorbent main body includes a liquid-permeable surface sheet disposed on the skin facing surface side, a liquid-impermeable back sheet disposed on the non-skin facing surface side, and an absorber disposed between the both sheets. And
The front-end-side fixing material is a fastening tape, and the back sheet is a non-woven fabric that can be fixed to the hook material by pressing the hook material of the fastening tape. Each of spunbond, air-through, thermal bond, and chemical bond Laminates produced by the manufacturing method are laminated on the entire surface of the non-skin facing surface of a liquid-impermeable or water-repellent resin film, or a female in a mechanical hook-and-loop fastener only at a position where a hook material of a fastening tape is to be fixed. The disposable diaper according to any one of <1> to <22>, wherein a liquid-impermeable or water-repellent resin film in which members are partially arranged is used.
<25>
The said fastening member and the said extending member are disposable diapers any one of <1>-<24> which has a stretching property at least in those extending directions, respectively.
<26>
The fastening member and the extending member use a stretchable sheet,
The stretchable sheet is an elastic film obtained from a polyolefin resin obtained by using a urethane or metallocene catalyst, a polyester-based elastic film, or a composite sheet in which a nonwoven fabric is bonded to both surfaces of an intermediate layer made of an elastomer material. The disposable diaper according to any one of <1> to <25>.
<27>
For fixing each member, it is fixed by an adhesive or heat fusion. As an adhesive to be used, styrene-isoprene-styrene block copolymer (SIS), styrene-butadiene-styrene block copolymer (SBS), It is a block copolymer type hot melt adhesive of styrene-ethylene-butylene-styrene copolymer (SEBS), and the heat fusion is any one of <1> to <26> using a high frequency seal or an ultrasonic seal The disposable diaper according to 1.

1A, 1B Unfoldable disposable diaper 2 Top sheet 3 Back sheet 4 Absorber 5 Solid gather 51 Elastic member for forming three-dimensional gather 52 Solid sheet for forming three-dimensional gather 53 Leg elastic member for forming leg gather 6 Fastening member 61 One end 62 other end portion 63 skin side fixing material 64 non-skin side fixing material 7 extending member 71 one end portion 72 other end portion 73 tip side fixing material 10 absorbent main body 10s side portion A along the longitudinal direction (Y direction) ventral region B Dorsal region C Inseam region CL Center line extending in the longitudinal direction

Claims (8)

A deployable disposable diaper comprising a vertically long absorbent main body divided into a ventral region, a dorsal region and a crotch region,
A fastening member extending outward in the width direction from each side portion along the longitudinal direction of the absorbent main body in the back side region, and a non-outward side position from the center in the width direction of the absorbent main body in the ventral region. An extending member having one end fixed to the skin facing surface and the other end being a free end;
The fastening member is provided with a skin-side fixing material on the skin facing surface, and a non-skin side fixing material is provided on the non-skin facing surface,
At the time of wearing, the extension member and the fastening member are fixed in a palm shape via the skin-side fixing material, and the extension member and the fastening member fixed in the palm shape are in a dorsal region. An unfolded disposable diaper that is folded to the side and fixed to the non-skin facing surface of the dorsal region of the absorbent main body via the non-skin-side fixing material.   The disposable diaper according to claim 1, wherein the skin-side adhesive material and the non-skin-side adhesive material in the fastening member are hook members of a mechanical hook-and-loop fastener.   The unfolded disposable diaper according to claim 1 or 2, wherein each of the extending member and the fastening member has elasticity.   The unfolded disposable diaper according to any one of claims 1 to 3, wherein a plurality of the extending members are provided, and one end of each extending member is arranged side by side in the width direction.   The said extending member is distribute | arranged between the edge part of the side part which follows the longitudinal direction of the said absorptive main body from the position of the width direction center of the said absorptive main body at the one end part of this extending member. The unfoldable disposable diaper according to any one of the above.   The extension member is provided with a tip-side fixing material on a surface opposite to the surface fixed to the fastening member on the other end side, the tip-side fixing material being a machine It is a hook material or an adhesive for an artificial surface fastener, and before use, the other end portion side of the extending member is temporarily fixed to the abdominal side region of the absorbent main body through the tip side fixing material. The unfolded disposable diaper according to any one of claims 1 to 5.   The said front end side fixing material is a hook material of a mechanical hook-and-loop fastener, The target surface temporarily fixed before use with this front end side fixing material is a nonwoven fabric which can be engaged with the said hook material. Disposable diapers. The disposable diaper according to claim 6, wherein the tip side fixing material is an adhesive, and a target surface temporarily fixed with the tip side fixing material before use is a peeled film or a nonwoven fabric.

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