JP4724628B2 - Disposable diapers - Google Patents

Description

  The present invention relates to a disposable diaper. More specifically, the present invention relates to a disposable diaper that can be attached / detached without removing all the clothes and that can be raised and lowered while wearing.

  In recent years, disposable diapers such as pants-type diapers and tape-type diapers have been used as diapers for infants and the elderly and disabled. For example, as shown in FIG. 9, the pants-type diaper is composed of the front body 102, the crotch 104, and the back body 106, and the corresponding side edges of the front body 102 and the back body 106 are joined together. One waist opening 108 and a pair of leg openings 110 are formed. A general configuration is that elastic materials such as rubber thread are arranged along the waist opening 108 and the leg opening 110. Since such a pants-type disposable diaper 100 is excellent in stretchability around the waist, when excreting in the toilet, the diaper can be lowered to the vicinity of the knee in the same manner as normal pants.

  Such a pants-type disposable diaper 100 can be easily removed by tearing the heat seal portion 112 at the side edge that connects the front body 102 and the back body 106, but when newly worn It was necessary to take off all the pants and put on again, which was very time-consuming.

  On the other hand, for example, as shown in FIG. 10, the tape-type diaper includes an absorbent body 122, a top sheet 118, and a back sheet 120, and includes a front body 102, a crotch 104, and a back body 106. The disposable diaper 101 further includes a fastening tape 109 that is arranged so as to extend from the left and right side edges 106a, 106b of the back body 106 and that fixes the front body 102 and the back body 106. Such a tape-type disposable diaper 101 can be attached and detached without taking off all the clothes, but since it has poor stretchability around the waist, it corresponds to an operation such as lowering the diaper during excretion in the toilet. I can't. For this reason, it is very inconvenient for the wearer who can also excrete in the toilet himself to remove the diaper once during excretion.

  For this reason, disposable diapers have been proposed that can be attached and detached without removing all of the clothes and that can be raised and lowered while wearing (see, for example, Patent Documents 1 to 3).

  For example, as shown in FIG. 11, the disposable diaper disclosed in Patent Document 1 includes a front abdomen 142, a back part 143 joined by both side line parts 147 of the front abdomen 142, and a crotch direction of the back part 143. A disposable diaper 102 comprising a continuous extension part 144, the extension part 144 having a length extending from the crotch to the front abdomen 142, detachable from the front abdomen 142, and the front abdomen 142 being separable from side to side It is.

  Moreover, although the illustration of the disposable diaper of Patent Document 2 is omitted, the front body part is divided into a right front abdomen and a left front abdomen, and a saddle type engagement member (first attachment / detachment region) on the skin side of these left / right front abdomen Is detachably attached to the front side surface (second attachment / detachment area) of the extension part, and the extension part is folded back to the outside so that the hook-shaped engagement member (third attachment / detachment area) is a non-woven fabric for bag It is detachably attached to the (fourth attachment / detachment region).

  Moreover, although the illustration of the disposable diaper of patent document 3 is omitted, the front abdomen and the back part that are substantially ring-shaped, and a crotch part that is provided continuously between the front abdomen and the back part are provided, and the absorbent body is provided in the crotch part. Is a disposable pant in which left and right broken parts for breaking the front abdomen are formed on both the left and right sides of the part where the crotch part in the front abdomen is continuous, between the left and right broken parts on the outer surface side of the front abdomen A first attachment portion is provided in at least a part of the intermediate region located, and left and right attachment pieces joined to a portion on the outer side in the left-right direction with respect to the left and right breakage portions in the front abdomen are provided. A second attachment portion that is attached to and detached from the first attachment portion is provided, and at least the free end side portion of each attachment piece can be divided into a plurality of portions by a dividing line.

Japanese Patent Laid-Open No. 2005-230313 JP 2005-192670 A JP 2006-34402 A

  However, the disposable diaper of Patent Document 1 has a problem that it is extremely difficult to attach and detach the front abdomen because the attaching / detaching part (engaging member) is directly formed in the separated part of the front abdomen. Moreover, since the rigidity of the above-described attachment / detachment portion is too high and does not follow when the wearer performs an operation such as folding the abdomen, there is also a problem that the wearing feeling is extremely bad. Moreover, since it is a uniform engaging part from the waist vicinity to the leg periphery vicinity, it was impossible to adjust a tension | tensile_strength, a fastening condition, a position, etc. according to the dimension of an abdominal periphery or a leg periphery.

  Also in the disposable diaper of patent document 2, since the attachment / detachment site | part was directly formed in the isolation | separation part of the front abdomen, there existed a problem that attachment / detachment of a front abdomen was very difficult. Moreover, since the attachment / detachment part of the front abdomen is concentrated at the center in the width direction of the absorbent main body, there is a problem that the stability of the absorbent main body is poor and the wearing feeling is bad. Moreover, since the attachment / detachment part is concentrated also in the center of the front abdomen, the rigidity of the attachment / detachment part is increased, and there is a problem that the abdomen is compressed depending on the posture of the wearer. Moreover, such a disposable diaper has a problem that it is difficult to fix the attachment / detachment part to the target zone as intended, the diaper is easily displaced, and causes leakage. Moreover, since it is a uniform engaging part from the waist vicinity to the leg periphery vicinity, it was impossible to adjust a tension | tensile_strength, a fastening condition, a position, etc. according to the dimension of an abdominal periphery or a leg periphery.

  In addition, the disposable diaper of Patent Document 3 has a better wearing feeling than the disposable diapers of Patent Documents 1 and 2 described above, but when the diaper is raised or lowered, or when clothes are attached or detached, the overhanging portion There is a problem in that clothes and a part of the body are caught on, and the overhanging portion is easily peeled off. In addition, since such an overhanging part is extremely easy to peel off from stress in the vertical direction or oblique direction, the overhanging part easily peels off even when the wearer performs an operation such as twisting the body. May end up.

  The present invention has been made to solve such problems of the prior art, and can be attached / detached without taking off all the clothes, and can be easily raised and lowered while wearing. Disposable diapers have a good wearing feeling, are difficult to slip on, and are effectively prevented from leaking. In addition, even if the diaper is raised or lowered, or clothes are attached or detached, the diaper is not locked. The present invention provides a disposable diaper in which a wearing part is not peeled off.

  The inventors of the present invention have completed the present invention as a result of intensive studies to solve the problems of the prior art as described above. Specifically, the following disposable diapers are provided by the present invention.

[1] A top sheet composed of a front body, a crotch part, and a back body, arranged to cover the surface of the absorbent body, and at least partly made of a liquid-permeable material; A back sheet made of a liquid-impermeable material, disposed so as to cover the back surface of the absorber, and the back body and the front body extending at least one each from the left and right side edges of the back body A fastening tape having a first fastening part for fixing the waist, a fastening region (first fastening region) attached to the front body for fastening the fastening tape, and a waist of the back body A disposable diaper provided with a plurality of waist elastic members disposed along a circumferential direction, further comprising a cover for covering the fastening tape fastened to the fastening region ; And the said fastening tape is on the back of the surface in which said 1st fastening part was provided, While further having a second fastening part for fixing the fastening tape and the cover, the cover has a second fastening region for fastening the second fastening part, The disposable diaper comprised so that the fastening force to the said 2nd fastening area | region of a 2nd fastening part may become smaller than the fastening force to the said 1st fastening area | region of a said 1st fastening part .

[ 2 ] The disposable diaper according to [1 ], wherein the fastening tape further includes a knob portion including a non-fastening portion that is not fastened to the fastening region at a portion on a distal end side thereof.

[ 3 ] The cover has a fastening portion (cover fastening fastening portion) for fixing the cover to any of the front body, the crotch part, or the rear body at the end thereof. The disposable diaper according to [1] or [2] .

[ 4 ] The disposable according to any one of [1] to [ 3 ], wherein the cover extends from an edge of the front body and is folded back toward the crotch portion to cover the fastening tape. Diapers.

[ 5 ] Any one of the above [1] to [ 3 ], wherein the cover is attached to the crotch part side from the fastening region of the front body and covers the fastening tape from below the diaper. Disposable diapers described in 1.

[ 6 ] The above [1] to [ 3 ], wherein at least two covers are attached to a central portion in the left-right direction of the front body, and are folded back in a side edge direction of the front body to cover the fastening tape. ] The disposable diaper in any one of.

  According to the present invention, it is possible to provide a disposable diaper that can be attached and detached without taking off all the clothes and that can be easily raised and lowered while wearing. In particular, the disposable diaper of the present invention has a good wearing feeling, is difficult to slip on the diaper, is effectively prevented from leaking, and even if the diaper is raised or lowered, clothes etc. The fastening part (fastening tape) that fixes the diaper is difficult to come off.

  BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the best mode for carrying out the present invention will be specifically described. However, the present invention is not limited to the following embodiment, and is within the scope of the present invention without departing from the spirit of the present invention. It should be understood that design changes, improvements, etc. can be made as appropriate based on knowledge.

  In addition, in this specification, “front body” means a part that covers the abdomen (front of the body) of the wearer when a diaper is worn on the wearer, and “inseam” means that the wearer wears a diaper. The part that covers the inseam of the wearer, the “rear body” means that when the diaper is worn on the wearer, the part that covers the back side (the back of the body) of the wearer and the part that covers the back side It shall mean the part covering the waist circumference that extends in the circumferential direction.

[1] Configuration of the disposable diaper of the present invention:
Drawing 1 is a top view showing one embodiment of a disposable diaper of the present invention, and is a figure showing the state seen from the absorptive main part side of a diaper. FIG. 2 is a front view showing a state in which the disposable diaper shown in FIG. 1 is worn. FIG. 3 is a schematic cross-sectional view showing one embodiment of the disposable diaper of the present invention, and is a schematic cross-sectional view showing a cross section of the disposable diaper shown in FIG. 1 cut along the line AA ′.

  As shown in FIGS. 1-3, the disposable diaper 1 of this invention is comprised from each part of the front body 2, the crotch part 3, and the back body 4, so that the surface of the absorber 11 and the absorber 11 may be coat | covered. A top sheet 12 made of at least a part of a liquid-permeable material, a back sheet 13 made of a liquid-impermeable material arranged to cover the back surface of the absorber 11, and a back body 4 A fastening tape 14 having a first fastening part 21 that fixes the back body 4 and the front body 2 and is attached to the front body 2 is extended from the left and right side edges 4a and 4b of the back body 4 and the front body 2 respectively. A plurality of waists arranged along the waist direction X of the back body 4 and a fastening region 15 for fastening the fastening tape 14 (hereinafter also referred to as “first fastening region”). A disposable diaper 1 provided with a surrounding elastic material 16, and is further attached to a fastening region 15. It is a disposable diaper 1 having a cover 17 for covering the fastening tape 14 that. In addition, in the disposable diaper 1 shown in FIGS. 1-3, the top sheet 12, the back sheet 13, and the absorber 11 are comprised as one member called the absorptive main body 9 which bears an absorption and holding function.

  The disposable diaper 1 of the present invention has a first fastening part 21 that extends at least one from the left and right side edges 4a, 4b of the back body 4 and fixes the back body 4 and the front body 2. Since the tape 14 and the fastening region 15 attached to the front body 2 for fastening the fastening tape 14 are provided, the clothes can be worn like a conventional tape-type diaper (for example, see FIG. 10). The diaper can be attached and detached without removing it, and the tightening force for fixing the back body 4 and the front body 2 can be appropriately adjusted according to the body shape of the wearer, thereby improving the wearing feeling of the diaper. be able to. Moreover, since the disposable diaper 1 of this invention is equipped with the some waist elastic | stretch material 16 arrange | positioned along the waist circumference direction X of the back body 4, in the wearing state, it is the conventional underpants type diaper. As shown in FIG. 9, for example, it has excellent stretchability around the waist, and when excreting in the toilet, the diaper can be lowered to the vicinity of the knee in the same manner as normal pants.

  Furthermore, since the disposable diaper 1 of the present invention is further provided with a cover 17 for covering the fastening tape 14 fastened to the fastening region 15, the diaper is raised and lowered and clothes are attached and detached. Even so, the fastening portion (fastening tape 14) of the diaper is not detached, and the diaper can be worn with peace of mind. In addition, the disposable diaper 1 of the present invention has a good wearing feeling, is difficult to shift in the diaper, and leakage is effectively prevented.

[1-1] Fastening tape:
The fastening tape used for the disposable diaper of this invention has the 1st fastening part extended from the right-and-left side edge of a back body at least 1 each, and fixing a back body and a front body. In the disposable diaper 1 of the present invention shown in FIGS. 1 and 2, the first fastening portion 21 described above is attached to the surface of the base material 25 extended from the left and right side edges 4 a and 4 b of the back body 4. Fastening tape 14 is provided. By fastening the fastening tape 14 to the fastening region 15 disposed in the front body 2, a waist opening 27 and a pair of leg openings 26a, 26b are formed, and the entire diaper is pants. It can be made into a mold, and it becomes possible to make the wearer wear a diaper. Moreover, since this fastening tape 14 can be attached and detached, the diaper can be attached and detached without removing all the clothes, and the fastening force and the fastening position when fixing the back body 4 and the front body 2 can be adjusted. It can adjust suitably according to a wearer's body shape, and can improve the wearing feeling of a diaper.

  Furthermore, in the disposable diaper 1 of the present invention, the fastening tape 14 fastened to the fastening region 15 is covered with the cover 17, so that the fastening tape can be used even if the diaper is raised or lowered or clothes are attached or detached. The diaper can be worn in peace without losing 14.

  As this 1st fastening part 21, the hook material of a mechanical fastener and the adhesion layer which consists of adhesives can be mentioned, for example, The hook material of a mechanical fastener can be used suitably especially. The above-mentioned “mechanical fastener (also referred to as a surface fastener)” is a surface fastener that uses mechanical coupling, and for example, a large number of protrusions (such as a hook, mushroom, and hook) are formed on the surface. A combination of the projected member (hook member) and a recess member (loop member) having loop-like fibers arranged on the surface is often used. In this fastener, the hook material is superimposed on the surface of the loop material, and a large number of protrusions of the hook material are engaged with the surface of the loop material, so that both members can be peeled and firmly fixed. It can be done.

  There is no restriction | limiting in particular about the base material 25 for attaching the 1st fastening part 21, The base material for fastening tapes used for the conventional tape type diaper, for example, a plastic film, a woven fabric, a nonwoven fabric, A base material made of a cloth material such as felt can be used.

Moreover, in the disposable diaper 1 of this invention, as shown in FIG. 8, this fastening tape 14 has the fastening tape 14 and the cover 17 (FIG. 1) on the back surface of the surface in which the 1st fastening part 21 was provided. Ru der those further comprising a second fastener part 22 for fixing the reference) and the. Thereby, while being able to increase the fastening area of the fastening tape 14 with respect to a diaper and being able to fasten to a diaper using both surfaces of the fastening tape 14, the fastening tape 14 is fixed more firmly. It becomes possible. Further, even when the wearer performs an operation such as twisting the body, the fastening tape 14 fastened to the fastening region 15 (see FIG. 1) is more difficult to peel off. Here, FIG. 8 is a partially enlarged side view showing another embodiment of the disposable diaper of the present invention, and is an enlarged view of the fastening tape. In addition, in FIG. 8, the example using the hook material of the mechanical fastener as the 1st fastening part 21 and the 2nd fastening part 22 of the fastening tape 14 is shown.

  Further, in the disposable diaper of the present invention, the fastening tape 14 further has a knob 23 formed of a non-fastening portion that is not fastened to the fastening region 15 (see FIG. 1) at the tip side portion thereof. It is preferable that By comprising in this way, the fastening tape 14 can be attached or detached easily. The knob 23 can be formed, for example, by not providing the first fastening part 21 at the tip side of the base material 25. For example, in conventional disposable diapers as shown in Patent Documents 1 and 2, since a detachable part (engagement member) is directly formed in the separation part of the front abdomen, a grip portion for attaching and detaching is formed. There was a problem that it was very difficult to attach and detach the front abdomen.

  The method of joining the first fastening part and the second fastening part on the front and back surfaces of the fastening tape may be the same method or different methods. For example, a bonding method using an adhesive may be used as one bonding method, and a bonding method using a mechanical fastening system (planar fastener) may be used as the other bonding method. In FIG. 1, the fastening tape 14 having two continuous fastening portions is arranged on the left and right of the back body 4, but the fastening portions of the fastening tape are formed discontinuously. There may be. Moreover, in the fastening tape having two continuous fastening portions, a separation line may be provided at the approximate center. In addition, when using the fastening tape which has two continuous fastening parts, as shown in FIG. 1, it is preferable that it is what was S-shaped cut.

[1-2] Fastening area:
A fastening area | region is an area | region which fastens the above-mentioned fastening tape. The disposable diaper 1 shown in FIGS. 1 to 3 is configured to fix the fastening tape 14 extended from the left and right side edges 4a and 4b of the back body 4 on the front abdomen side via the wearer's flank. Therefore, the fastening region 15 is formed on the surface of the front body 2.

  The material of the fastening region 15 is not particularly limited as long as the first fastening part 21 of the fastening tape 14 can be fastened. When the fastening part 21 is a hook material of a mechanical fastener, a front patch made of a loop material of a mechanical fastener can be used. Further, the hook material of the mechanical fastener can be engaged with a material having a fibrous surface such as woven fabric, non-woven fabric, felt, and pile in addition to the loop material of the mechanical fastener corresponding thereto. Instead of the loop material of the mechanical fastener, the fastening region 15 can be formed using a sheet material made of these materials. For example, by forming the surface of the absorbent main body 9 or the exterior member 20 constituting the disposable diaper 1 on the clothing side of the wearer from the above-described material, the absorbent main body 9 or the exterior member 20 is fixed to the fastening region. 15 is also possible.

  In addition, when the first fastening portion 21 of the fastening tape 14 is an adhesive layer made of an adhesive, a coating treatment that can attach the adhesive layer and peel the adhesive on the surface is possible. The performed film etc. can be used.

  In addition, although there is no restriction | limiting in particular about the magnitude | size and shape of the fastening area | region 15, according to a wearer's body shape, in order to be able to adjust the fastening position of the fastening tape 14, it is on a wearer's front stomach part side. It is preferably formed in a relatively wide range. The specific size (length and width) of the fastening region 15 is preferably in the range of 100 mm × 100 mm to 200 mm × 200 mm. The vertical and horizontal lengths of the fastening region 15 may be the same or different. Such a fastening region (first fastening region) may be formed in a region extending from the absorbent main body, but at least a part thereof is preferably formed on the absorbent main body. More preferably, the main part, that is, the part to which the fastening tape is actually fastened is formed on the absorbent main body. Since the fastening region is formed on the absorbent main body in this way, the fastening region is firm, and the fastening tape can be stably joined.

[1-3] Cover:
The cover used for the disposable diaper of this invention is for coat | covering the fastening tape fastened to the fastening area | region. The cover 17 used for the disposable diaper 1 shown in FIGS. 1 to 3 extends from the edge 2a of the front body 2 and is folded back in the direction of the crotch 3 to cover the fastening tape 14. In the disposable diaper 1 shown in FIG. 1, the disposable diaper 1 is configured to be folded back by a folding line 31 formed at a boundary portion between the edge 2 a of the front body 2 and the cover 17 to cover the fastening tape 14.

  Examples of the material constituting the cover 17 include a fibrous material such as a woven fabric, a nonwoven fabric, a felt, and a bile, a plastic film, a combination of a film and a fibrous material, and the like. The cover may be the same as or different from the material of the fastening region arranged on the abdomen side. For example, when this cover has a role of only covering the fastening region, it is preferable to use a material such as spunbond or SMS (spunbond / meltblown / spunbond) in terms of strength and texture.

  Further, the width of the sheet constituting such a cover may be a size that can cover the fastening tape fastened to the fastening region, and is formed wider than the back sheet, for example. It may be a thing.

  As described above, when the fastening tape 14 having the second fastening portion 22 on the back surface of the surface provided with the first fastening portion 21 is used, It is preferable that a region for fastening the second fastening portion 22 (hereinafter, also referred to as “second fastening region 28”) is formed. In this way, when fastening is performed on both sides of the fastening tape 14, it is necessary to select a material suitable for joining with the fastening tape 14 as the cover 17. For example, when a hook material is disposed on the outer side surface of the fastening tape 14 (the back side of the surface on which the first fastening portion 21 is provided), a loop material that is a laminate of a woven fabric and a film is used as the cover 17. Or an air-through nonwoven fabric can be suitably used. The air-through nonwoven fabric may be used alone, or a sheet bonded with spunbond or SMS may be used. Sheets bonded in this way are advantageous in that they are less deformed and higher in strength. Moreover, when the adhesive is arrange | positioned at the outer side surface (back surface of the surface in which the 1st fastening part 21 was provided) of the fastening tape 14, the film which performed the peeling process can be used as the cover 17. FIG. . When using such a film, in order to improve the texture, a non-woven fabric bonded to the outer surface of the diaper when worn may be used.

In the disposable diaper of the present invention, fastening force to the second fastening region 28 of the second fastening part 22 (the force required to peel the second fastener part 22), the first fastener part 21 that consists of the fastening region 15 to be smaller than (the first fastening region) fastening force to (force required to peel the first fastening portion 21). By comprising in this way, when the cover 17 is peeled off, the fastening tape 14 is not peeled off, and the cover 17 and the fastening tape 14 can be reliably peeled off sequentially.

  In the disposable diaper of the present invention, the first fastening part 21 and the second fastening part 22 constituting the fastening tape 14 may be the same type of joining means. For example, the second fastening part 22 When the fastening force to the second fastening region 28 and the fastening force of the first fastening portion 21 to the first fastening region 15 are different, the first fastening portion 21 and the second fastening region 21 When the bonding area with the attachment portion 22 is made different or a hook material of a mechanical fastener is used, the shape of the pin constituting the hook material, its height, density, etc. may be changed.

  Further, since the cover 17 covers the fastening tape 14 fastened to an arbitrary position in the fastening region 15, the cover 17 can cope with a change in the fastening position of the fastening tape 14. Thus, it is preferable that it is a magnitude | size which can coat | cover the whole fixation area | region 15. As shown in FIG.

  Further, the cover 17 has a fastening part (cover fastening fastening part 24) for fixing the cover 17 to any of the front body 2, the crotch part 3 and the back body 4 at the end thereof. It is preferable. By comprising in this way, peeling of cover 17 itself can be suppressed and the fastening tape 14 can be coat | covered favorably. In addition, the cover fixing fixing part 24 can use suitably the hook material of the mechanical fastener which comprises the above-mentioned 1st fixing part 21, and the adhesion layer which consists of an adhesive, for example. By constituting in this way, for example, the cover fixing fastening part 24 is made of a material having a part of the fastening region 15 and a fibrous surface such as woven fabric, nonwoven fabric, felt, or pile. 9 and the exterior member 20, and it is not necessary to separately provide a region for fixing the cover fixing fixing portion 24, and the configuration of the portion for fixing the cover 17 can be simplified.

  Moreover, in the disposable diaper 1 shown in FIGS. 1-3, this cover 17 is extended from the edge 2a of the front body 2, and it folds in the crotch 3 direction and covers the fastening tape 14. For example, as shown in FIG. 6, the cover 17 may be attached to the crotch 3 side from the fastening region 15 of the front body 2 and cover the fastening tape 14 from below the diaper. Alternatively, as shown in FIG. 7, at least two (17 in FIG. 7) cover 17 are attached to the center of the front body 2 in the left-right direction, and are folded back in the direction of the side edge of the front body 2. The tape 14 may be covered. Thus, there is no restriction | limiting in particular about the position which attaches the cover 17, What is necessary is just to be able to coat | cover the fastening tape 14 fastened to the fastening area | region 15. FIG. Here, FIG.6 and FIG.7 is a front view which shows the state which worn other embodiment of the disposable diaper of this invention.

  In the disposable diaper 1 shown in FIG. 6, since the cover 17 is not extended from the edge 2 a of the front body 2, the cover 17 is an obstacle when the fastening tape 14 is fastened to the fastening region 15. It is easy to fix. In the disposable diaper 1 shown in FIG. 7, when adjusting the fastening position and fastening force of the fastening tape 14, only the one cover 17 in the left-right direction is peeled off, and the other cover 17 is adjusted as it is. It can be performed. For this reason, at the time of such adjustment, it is possible to effectively prevent the diaper from coming off without the fastening tape 14 being completely peeled off. Further, as shown in FIG. 6, when the cover 17 is arranged on the crotch part 3 side of the diaper from the first fastening part 21, the cover 17 is temporarily bonded to the crotch region of the absorbent main body 9 in advance. Preferably it is. By temporarily adhering in this manner, it is possible to prevent the cover from being folded in a folded state when the diaper is manufactured, and there is an advantage that the cover does not get in the way when the diaper is mounted. The temporary bonding is preferably performed by a hot-melt adhesive that can be re-bonded. Such temporary bonding is only required that a part of the cover is bonded to the absorbent main body. In addition, in the disposable diaper as shown in FIG. 1 and FIG. 7, it is temporarily bonded to a part of the diaper (for example, an absorbent main body or an exterior member) so that the cover does not get in the way at the time of manufacture or wearing. May be.

[1-4] Absorber:
The absorber is a member for absorbing and holding the wearer's urine. The absorber is made of an absorbent material because it needs to absorb and retain the wearer's urine and body fluid.

  Examples of the absorbent material constituting the absorber include conventionally known absorbent materials usually used for disposable diapers and other absorbent articles, such as fluff pulp, super absorbent polymer (Super Absorbent Polymer; hereinafter referred to as “SAP”). And a hydrophilic sheet. It is possible to use wood pulp or non-wood pulp defibrated as fluff pulp, sodium polyacrylate as SAP, tissue, absorbent paper, hydrophilized nonwoven fabric as hydrophilic sheet preferable. Moreover, as a countermeasure against the loss of shape of the absorbent body, synthetic fibers such as heat-sealing fibers may be included.

  These absorbent materials are usually used as a single-layer or multi-layer mat. Under the present circumstances, 1 type may be used independently among the said absorptive materials, and 2 or more types may be used together. Especially, what used together about 10-500 mass parts SAP with respect to 100 mass parts of fluff pulp is preferable. At this time, the SAP may be uniformly mixed in each mat of fluff pulp, or may be arranged in layers between the layers of the multilayer fluff pulp.

  It is preferable that the absorber is interposed at least in part between the top sheet and the back sheet. Usually, the absorber is interposed between the top sheet and the back sheet by being sandwiched between the top sheet and the back sheet and sealing the peripheral edge thereof. Therefore, the flap part in which the absorber is not interposed is formed between the top sheet and the back sheet at the peripheral part of the absorber. The absorber is interposed in at least a part between the top sheet and the back sheet. More specifically, the absorbent body may be interposed at least in the crotch region, and the absorbent body may extend to the front body and the back body.

  It is preferable that the absorber is entirely wrapped with a hydrophilic sheet. Such a configuration has an advantage that SAP can be prevented from leaking from the absorber and shape stability can be imparted to the absorber.

  Although there is no restriction | limiting in particular about the shape of an absorber, The shape used in the conventional disposable diaper and other absorbent articles, for example, a rectangular shape, an hourglass type, a gourd type, a T shape etc. can be mentioned. The disposable diaper 1 of the present invention shown in FIG. 1 is an example in which an hourglass-type absorber is used as the absorber 11.

  In addition, a sheet (second sheet) for diffusing liquid such as urine and body fluid may be incidentally disposed on the surface side of the absorber (for example, between the absorber and the top sheet). . When this second sheet is attached, due to the wearer's posture, etc., even when the space on the back side of the top sheet is not sufficiently formed, the absorption rate of urine, body fluid, etc. is difficult to decrease, and the absorption rate decreases. It is possible to prevent leakage of urine and body fluids.

  Examples of the material constituting the second sheet include hydrophilic and liquid-permeable materials such as woven fabric, non-woven fabric, porous plastic, and fluff pulp. Examples of these constituent materials include polypropylene, polyethylene, polyester, rayon, pulp, and composite fibers thereof. As the pulp, crimped fibers such as curly cellulose fibers can be suitably used.

[1-5] Top sheet:
A top sheet is a sheet | seat arrange | positioned so that the surface (surface located in a wearer's skin side at the time of mounting | wearing of a diaper) may be coat | covered. At least a part (all or a part) of the top sheet is made of a liquid-permeable material because the absorber disposed on the back surface side needs to absorb the wearer's urine. Usually, at least near the surface of the absorber, it is made of a liquid-permeable material that can permeate the wearer's urine and body fluid. As long as at least a part is made of the liquid permeable material, the entire top sheet is not necessarily made of the liquid permeable material.

  Examples of the liquid permeable material constituting the top sheet include a woven fabric, a nonwoven fabric, and a porous film. Among these, it is preferable to use a non-woven fabric made of a thermoplastic resin such as polypropylene, polyethylene, polyester, or nylon and subjected to a hydrophilic treatment. There is no restriction | limiting in particular also about the kind of nonwoven fabric, The conventionally well-known nonwoven fabric manufactured by various manufacturing methods, such as air through (card hot air), card | curd embossing, and a spun bond, can be used suitably.

  The top sheet may be composed of a single sheet material, but may be composed of a plurality of sheet materials. For example, the form which comprises the top sheet arrange | positioned at the surface part of an absorber and the top sheet arrange | positioned in the part of a side flap by a different sheet | seat is also utilized frequently. For example, a top sheet (center sheet) made of a liquid permeable material is disposed at the center of the diaper, and a top sheet made of a breathable water repellent material that exhibits resistance to liquid permeation on the side flap portion of the diaper ( The form which arranges a side sheet) is often used.

[1-6] Backsheet:
A backsheet is a sheet | seat arrange | positioned so that the back surface (surface located in a wearer's clothing side at the time of mounting | wearing of a diaper) may be coat | covered. The back sheet is made of a liquid-impermeable material because it is necessary to prevent the wearer's urine from leaking outside the diaper.

  Examples of the liquid-impermeable material constituting the backsheet include a liquid-impermeable film made of a resin such as polyethylene. Among these, a microporous polyethylene film is preferably used. This microporous polyethylene film has a large number of fine pores of 0.1 to several μm, and is liquid impervious but has moisture permeability, so that the inside of the diaper can be prevented from being steamed There is.

  Note that a sheet material (cover sheet) may be bonded to the outer surface of the back sheet. This cover sheet is used to reinforce the back sheet and improve the feel (tactile feeling) of the back sheet.

  Examples of the material constituting the cover sheet include woven fabric and non-woven fabric. Especially, it is preferable to use the dry nonwoven fabric and wet nonwoven fabric which consist of thermoplastic resins, such as polyethylene, a polypropylene, and polyester.

[1-7] Absorbent body:
In the disposable diaper of the present invention, the top sheet, the back sheet, and the absorbent body are configured as one member called an “absorbent body” that is responsible for absorption and holding functions, and joined to an exterior member that is manufactured separately. This constitutes a disposable diaper. This absorbent main body has a structure in which a top sheet is disposed on the front surface side of the absorbent body and a back sheet is disposed on the back surface side, and the absorbent body is interposed between the top sheet and the back sheet. For example, in the disposable diaper 1 shown in FIGS. 1 to 3, the absorbent body 11 is sandwiched between the top sheet 12 and the back sheet 13, and the periphery of the absorbent body 11 is sealed, whereby the top sheet 12 and the back sheet 13. It is the example which comprised the absorptive main body 9 of the structure where the absorber 11 was interposed in between.

  An absorptive main body is comprised by the size which covers at least the crotch part of a diaper. However, in order to ensure the effect of preventing leakage, it is preferable to have a size that covers not only the crotch part but also a part of the front body and the back body. The absorptive main body can be fixed to the exterior member using, for example, a hot melt adhesive or the like.

[1-8] Hip elastic material:
The waist elastic material is an elastic material arranged along the waist circumference direction of the back body. As shown in FIG. 1, by arranging the waist elastic material 16, it is possible to form a gathered (tammy gather) with high elasticity around the waist. With this Tammy Gather, when excreting in the toilet, etc., you can not only lower the diaper to near the knee in the same way as normal pants, but also improve the fit for the wearer and lower the diaper Can be effectively prevented. Further, due to the waist elastic member 16 disposed along the waist circumference direction X, a stretchable caster (waist gather) is formed in the waist opening. By this waist gather, it becomes difficult to form a gap in the waist portion, and urine leakage from the waist portion can be effectively prevented.

  The waist stretchable material used in the disposable diaper of the present invention may be determined in consideration of the degree of gather shrinkage, etc., and the constituent material, the elongation rate of the material, the stretched state at the time of fixation, and the like. As a specific elastic material, the elastic material used with the conventional disposable diaper can be used suitably. Examples of suitable examples include elastic rubber, elastic film, elastic foam (urethane foam, etc.), etc., as well as thread rubber and flat rubber made of elastic materials such as natural rubber and synthetic rubber (urethane rubber, etc.). .

  The elastic material constituting the waist elastic material is preferably fixed in an expanded state in order to exert a sufficient elastic force. For example, when the elastic material is natural rubber or synthetic rubber, it is preferably fixed in a stretched state of 120 to 400%, and more preferably fixed in a stretched state of 200 to 300%. By fixing in the extended state in such a range, a sufficient stretching force can be applied.

  In the above waist elastic material, usually, a plurality of elastic materials are arranged along the waist direction. The plurality of waist elastic members may have the same material, thickness, elongation rate, or the like, but may be different. For example, as shown in FIG. 1, the waist stretchable material 16b disposed in the vicinity of the waist opening and the waist stretchable material 16a disposed in the crotch waist may be made different in thickness and elongation rate. . For example, in the vicinity of the waist opening, an elastic material that does not cause a gap in the waist opening is selected, and the waist is closer to the crotch side, so that the fit is high and the diaper can be prevented from slipping over. The right stretch material. The waist elastic 16a (hereinafter sometimes referred to as the first waist elastic) arranged at the waist on the inseam side from the waist opening forms the above-mentioned tammy gather, and is arranged near the waist opening. The waist stretchable material 16b (hereinafter sometimes referred to as the second waist stretchable material) forms the above-mentioned waist gathers.

  The stretchable material as described above is fixed to other constituent members of the diaper by an adhesive or other means. The fixing method may be, for example, adhesion using a hot melt adhesive or other highly fluid adhesive, or may be welding by heat such as heat sealing or ultrasonic waves.

[1-9] Solid gathering:
In order to prevent the side leakage of the urine excreted by the wearer, a three-dimensional gather may be provided. The three-dimensional gather is a member for preventing side leakage of the urine excreted by the wearer, and is a leak-proof wall configured to stand up three-dimensionally. By forming such a three-dimensional gather, the three-dimensional gather serves as a breakwater, and leakage from a leg-diameter opening or the like (so-called “lateral leakage”) can be effectively prevented.

  The structure of a three-dimensional gather can employ | adopt the structure used for the conventional disposable diaper and other absorbent articles. For example, a stretchable material (a three-dimensional gathered stretchable material) disposed on a part of the water-repellent sheet material and a sheet (gather) formed on the sheet material by the three-dimensional gathered stretchable material can be suitably used.

  The three-dimensional gather can be formed by folding back the top sheet or the back sheet of the absorbent main body, or can be formed by pasting a completely separate sheet material. For example, the disposable diaper 1 shown in FIGS. 1 to 3 corresponds to the end of the sheet material 32 (32a, 32b) that is completely different from the top sheet 12 and the back sheet 13 (the upper edge 34 of the three-dimensional gathers 29a, 29b). The pair of three-dimensional gathers 29 (29a, 29b) are formed by folding the two three-dimensional gather elastic members 36a, 36b or the three-dimensional gather elastic members 36c, 36d between the folded portions. It is an example.

  In order to prevent leakage from the crotch part, this three-dimensional gather may be formed at least in the crotch part, but may be formed in the front body or the back body. For example, the disposable diaper 1 shown in FIG. 1 has a pair of three-dimensional gathers 29 (29a, 29b) formed continuously from the crotch part 3 to both the front body 2 and the back body 4 along the longitudinal direction of the diaper. An example is shown. Moreover, it is preferable to form at least one pair of solid gathers, and two or more pairs may be formed.

  The three-dimensional gather may be an inward gather that tilts toward the inside of the diaper, or may be an outward gather that tilts toward the outside of the diaper. Moreover, it can also be set as the three-dimensional gathers (C fold gather, Z fold gather, etc.) which formed the bending part and the folding | turning part in a part of height direction. For example, the disposable diaper 1 shown in FIG. 1 is an example in which the three-dimensional gather 29 (29a, 29b) is inverted and gathered.

[1-10] Other elastic materials:
In the disposable diaper of this invention, it is preferable to arrange | position an elastic material around a leg as other elastic materials.

  The leg circumference elastic material is an elastic material arranged along the leg circumference opening. By arranging the leg-stretchable material, a gather (leg gather) rich in stretchability can be formed in the leg-surrounding opening. Therefore, it is difficult to form a gap around the leg, and urine leakage from the opening around the leg can be effectively prevented. Note that the leg-surrounding stretchable material only needs to be disposed around the legs. For example, you may arrange | position along the leg periphery, but you may arrange | position continuously by the omega loop-shaped locus | trajectory along the side edges 4a and 4b of the back body side in an exterior member. At this time, the cross section of the absorbent main body is formed, but preferably, the elastic material around the leg of the portion crossing the absorbent main body is arranged in a shape that loses stress by being snapped back by cutting. . Furthermore, it is preferable that the leg-around elastic material of the crotch part is arrange | positioned along the side edge of an absorptive main body. For example, as shown in FIG. 1, the leg-surrounding material (first leg-surrounding material 40 a) disposed along the side edges 4 a and 4 b on the back body side of the exterior member 20 and the absorbent main body 9 are disposed. The leg elastic members 40 extending from the buttocks to the crotch can be arranged by crossing the leg elastic members (second leg elastic members 40b).

  The leg elastics (first leg elastics) placed on the exterior member and the leg elastics (second leg elastics) arranged on the absorbent body are the type, number, and thickness of elastic materials. The elongation rate may be the same or different. When they are different from each other, it is preferable that the second leg elastic member disposed in the absorbent main body corresponding to the crotch portion is configured to increase the stress in order to prevent leakage from the crotch portion.

  In the disposable diaper 1 shown in FIGS. 1 to 3, a plurality of first waist elastic members 16 a are arranged on the waist part crotch side from the waist opening part, and the waist periphery opening part 27 has a peripheral edge. In this example, a plurality of second waist elastic members 16b are disposed so as to surround the waist opening 27, and a plurality of leg elastic members 40 are disposed on the periphery of the leg openings 26a, 26b. In the disposable diaper 1 shown in FIG. 1 to FIG. 3, the leg elastic member 40 includes a plurality of rear body leg elastic members 40 a arranged from the back body 4 to the crotch part 3 and the crotch part 3. It is comprised from the front body side leg periphery elastic material 40b arrange | positioned over the front body 2. As shown in FIG.

  About these elastic materials, the structure similar to the waist elastic material already mentioned can be employ | adopted. Then, after considering the degree of gather contraction and the like, the constituent material, the elongation rate of the material, the stretched state at the time of fixing, etc. may be determined.

[1-11] Exterior member:
An exterior member is a member which bears the mounting function for encapsulating a wearer's body, and is a sheet-like member which forms at least a part of each part of a front body, a crotch part, and a back body which constitute a diaper. In the disposable diaper 1 shown in FIG. 1, the exterior member 20 forms the back body 4 of the diaper, and the front body and the crotch are formed by the absorbent main body 9. The exterior member used for the disposable diaper of the present invention may be a sheet-like member that forms the crotch part and the front body together with the back body.

  In the disposable diaper according to the present invention, the absorbent main body serves exclusively for absorbing and holding the wearer's excrement, so a liquid-impermeable material is used as a material constituting the exterior member. There is no need to use it. Examples of the material constituting the exterior member include woven fabric and nonwoven fabric. Especially, it is preferable to use the dry nonwoven fabric and wet nonwoven fabric which consist of thermoplastic resins, such as polyethylene, a polypropylene, and polyester. Specific examples include spunbond, SMS, air-through nonwoven fabric, and the like. In particular, spunbond can be suitably used because of its high strength. Moreover, since an air through nonwoven fabric is excellent in a touch feeling, an air through nonwoven fabric can also be used as a material for the surface (outside) of the exterior member.

  And in order to fix the exterior member in the state which pinched | interposed the waist elastic | stretch material, the leg elastic material, etc., it is often comprised by bonding 2 or more nonwoven fabrics together. For example, in the disposable diaper 1 shown in FIGS. 1 to 3, the exterior member 20 is composed of two nonwoven fabrics, and the waist elastic material 16 and the leg elastic material 40 a are sandwiched and fixed between the two nonwoven fabrics. Furthermore, it is an example in which the end portion of the absorbent main body 9 is fixed by being restrained by another nonwoven fabric (restraining sheet 30).

[2] How to wear the disposable diaper of the present invention:
When wearing the disposable diaper of the present invention, first, the rear body 4 of the deployed disposable diaper 1 as shown in FIG. 1 is applied to the wearer's back side (back of the body), and then FIG. As shown in FIG. 3, the front body 2 is lifted to the wearer's ventral side (front of the body) through the crotch 3 through the inseam of the wearer.

  After that, as shown in FIG. 5, the left and right side edges 4 a and 4 b of the back body 4 are moved to the abdomen via the wearer's flank, and the left and right sides are moved to the fastening region 15 formed on the front body 2. The fastening tape 14 extended from the side edges 4a and 4b is fastened. At this time, the fastening position of the fastening tape 14 is adjusted according to the body shape of the wearer so that the wearer's abdomen is not compressed. Here, FIG.4 and FIG.5 is a front view for demonstrating the wearing procedure of the disposable diaper shown in FIG.

  After the fastening tape 14 is fastened to the fastening region 15, as shown in FIG. 2, the cover 17 extending from the edge 2 a of the front body 2 is folded back in the direction of the crotch 3 to attach the fastening tape 14. Cover. Thus, the disposable diaper 1 of this invention can be worn. When worn by the above method, it is possible to attach and detach without removing all the clothes.

  In addition, in the disposable diaper 1 of the present invention, a leg-shaped opening is formed by a method similar to that in which a pants-type diaper is formed in advance by the above-described method without being applied to the wearer's body, and normal pants are worn. It is also possible to wear it through each leg to 26a, 26b (refer FIG. 2).

  Further, when the worn disposable diaper 1 is taken off, the clothes 17 are not peeled off by sequentially peeling off the cover 17 and the fastening tape 14 in the reverse order of the above-described wearing method shown in FIGS. Both can be removed. Of course, it is also possible to pull down the diaper and pull out each leg from the leg opening 26a, 26b (see FIG. 2) in the same manner as taking off normal pants.

[3] Method for producing disposable diapers:
Hereinafter, the manufacturing method of the disposable diaper of this invention is demonstrated in the example in the case of manufacturing the disposable diaper 1 shown in FIG.

[3-1] Production of absorbent main body continuum:
A plurality of absorbent bodies 11 wrapped in a hydrophilic sheet are disposed on the upper surface of the long back sheet 13 with a space therebetween, and a long top sheet 12 is disposed on the upper surface. Next, the absorbent body continuum in which the absorbent main body 9 is continuously arranged is obtained by sealing the periphery of the absorbent body 11 so as to be sandwiched between the top sheet 12 and the back sheet 13. Under the present circumstances, you may arrange | position the leg periphery expansion-contraction material 40b (2nd leg periphery expansion-contraction goods) in the site | part corresponded to the crotch part of an absorptive main body.

[3-2] Production of solid gathers:
One end portion of the sheet material 32a (32b) is folded, and the three-dimensional gathers 29a (29b) are obtained by bonding the folded portions with the two three-dimensional gather elastic members 36a (36b) sandwiched therebetween.

[3-3] Manufacture of absorbent main body and attachment of three-dimensional gathering:
Absorbent body continuum in which three-dimensional gathers 29a and 29b are bonded together and three-dimensional gathers are arranged so as to wrap the side edges of the absorbent main body continuous body, that is, the bonded portion of the top sheet 12 and the back sheet 13 from the outside The absorbent main body 9 to which a three-dimensional gather is attached is obtained by separating the individual absorbent body continuations at portions where the absorbent body is not disposed.

[3-4] Attachment of fastening area:
A fastening region 15 for fastening the fastening tape 14 is attached to the absorbent main body 9 described above. As the fastening region 15, for example, when the first fastening part 21 of the fastening tape 14 is a hook material of a mechanical fastener, a front patch made of a loop material of a mechanical fastener can be used. In addition, when using the surface by the side of the back seat | sheet 13 of the absorptive main body 9 as a fixation area | region, it is not necessary to attach the fixation area | region 15 to the absorptive main body 9 separately.

[3-5] Attaching the cover:
A cover 17 for covering the fastening tape 14 fastened to the fastening region 15 is attached to the edge 2a of the front body 2 formed by the absorbent main body 9 described above. In the disposable diaper 1 shown in FIG. 1, the cover 17 extends from the edge 2a of the front body 2 and is folded back in the direction of the crotch 3 to cover the fastening tape 14. For example, when manufacturing the disposable diaper 1 shown in FIG. 6, the cover 17 is attached to the crotch 3 side from the fastening region 15 of the front body 2. When manufacturing the disposable diaper 1 as shown in FIG. 7, at least two covers 17 are attached to the central part in the left-right direction of the front body 2.

[3-6] Production of exterior member continuum:
First, two long nonwoven fabrics are prepared, and waist elastic members 16a and 16b and leg elastic members 40a (first leg elastic materials) are arranged and bonded on the upper surface of one of these nonwoven fabrics. Fix it. Further, by laminating and fixing another nonwoven fabric on the upper surface, a plurality of exterior members in which the waist elastic members 16a and 16b and the leg elastic members 40a are interposed between the two nonwoven fabrics. A continuous long exterior member continuum is obtained. Each exterior member constituting the exterior member continuum forms at least a part of each part of the front body, the crotch part, and the back body constituting the diaper, and the disposable diaper 1 shown in FIG. 1 is the back body of the diaper. 4 is formed.

[3-7] Attachment of fastening tape:
A fastening tape 14 having a first fastening part 21 for fixing the back body 4 and the front body 2 to the left and right side edges 4a, 4b of the back body 4 in each exterior member constituting the exterior body continuous body described above. Attached. The fastening tape 14 is provided with a first fastening portion 21 (for example, a hook material of a mechanical fastener) that can be attached to a fastening region on one surface of a base material 25 and a second fastening on the other surface. A portion 22 (for example, a hook material of a mechanical fastener) is disposed. In addition, a fastening tape arrange | positions a tape base part to an exterior member continuous body in the state which folded the tape part, and is joined and fixed.

[3-8] Manufacture of disposable diapers:
The absorbent main body 9 provided with the fastening region 15 and the cover 17 is disposed in the vicinity of each crotch part of the exterior member continuous body, and the restraining sheet 30 is disposed and fixed so as to restrain the end of the absorbent main body 9. (In the disposable diaper 1 shown in FIG. 1, the sheet | seat 30 is arrange | positioned at the back body 4 side, and the edge part of the absorptive main body 9 is fixed). Then, in order to form a leg periphery opening part, the nonwoven fabric which comprises the exterior member continuous body of the side part of the leg periphery elastic material 40 is excised. Furthermore, each exterior member 20 is cut off at the position where the fastening tape 14 of the exterior member continuous body is disposed, and individual disposable diapers are manufactured. Thus, the disposable diaper 1 shown in FIGS. 1-3 can be manufactured.

  The disposable diaper of the present invention can be suitably used as a diaper for infants or for adults such as elderly people and persons with disabilities who need care. The disposable diaper according to the present invention can be attached / detached without taking off all the clothes, and can be easily raised / lowered while wearing the diaper. Even so, the fastening part for fixing the diaper is not peeled off, so the diaper can be worn as if wearing normal pants.

It is a top view which shows one Embodiment of the disposable diaper of this invention, and is a figure which shows the state seen from the absorptive main body side of the diaper. It is a front view which shows the state which wore the disposable diaper shown in FIG. It is a schematic sectional drawing which shows one Embodiment of the disposable diaper of this invention, and is a schematic sectional drawing which shows the cross section which cut | disconnected the disposable diaper shown in FIG. 1 along the A-A 'line. It is a front view for demonstrating the wearing procedure of the disposable diaper shown in FIG. It is a front view for demonstrating the wearing procedure of the disposable diaper shown in FIG. It is a front view which shows the state which wore other embodiment of the disposable diaper of this invention. It is a front view which shows the state which mounted other embodiment of the disposable diaper of this invention. It is a partially expanded side view which shows other embodiment of the disposable diaper of this invention, and is a figure which expands and shows a fastening tape. It is a schematic perspective view which shows the conventional pants-type diaper, and is a figure which shows the state seen from the front of a diaper. It is a top view which shows the conventional tape type diaper, and is a figure which shows the state seen from the absorptive main body side of the diaper. It is a front view which shows the state which looked at the conventional disposable diaper from the front.

Explanation of symbols

1: disposable diaper, 2: front body, 2a: edge of front body, 3: crotch, 4: back body, 4a, 4b: side edge (side edge of back body), 9: absorbent main body, 11: Absorber, 12: top sheet, 13: back sheet, 14: fastening tape, 15: fastening region (first fastening region), 16: waist elastic material, 16a: waist elastic material (first waist) Circumference elastic material), 16b: waist elastic material (second waist elastic material), 17: cover, 20: exterior member, 21: first fastening part, 22: second fastening part, 23: knob , 24: cover fixing fastening portion, 25: base material (base material for fastening tape), 26a, 26b: leg opening, 27: waist opening, 28: second fastening region, 29, 29a, 29b: three-dimensional gather, 30: restraining sheet, 31: folding line, 32, 32a, 32b: sheet material, 34: top Edge, 36a, 36b, 36c, 36d: Three-dimensional gather elastic material, 40: Leg elastic material, 40a: Leg elastic material (first leg elastic material), 40b: Leg elastic material (second leg circumference) Stretch material), 100, 101, 102: disposable diaper, 102: front body, 104: crotch, 106: back body, 106a, 106b: side edge, 108: waist opening, 109: fastening tape, 110: Leg circumference opening, 112: heat seal part, 118: top sheet, 120: back sheet, 122: absorber, 142: front abdomen, 143: back part, 144: extension part, 147: side line part, X: Hip circumference direction.

Claims (6)

Consists of each part of the front body, the crotch and the back body,
An absorbent body, a top sheet that is disposed so as to cover the surface of the absorbent body, at least partly made of a liquid-permeable material, and a liquid non-conductive layer that is disposed so as to cover the back surface of the absorbent body. A back sheet made of a permeable material, and a fastening tape having a first fastening portion that extends from the left and right side edges of the back body at least one by one and fixes the back body and the front body; A fastening region (first fastening region) attached to the front body, and a plurality of waist elastic members disposed along a waist direction of the back body; A disposable diaper equipped with
And a cover for covering the fastening tape fastened to the fastening region , and
The fastening tape further includes a second fastening part for fixing the fastening tape and the cover to the back surface of the surface provided with the first fastening part, and the cover includes Having a second fastening region for fastening the second fastening part,
A disposable diaper configured such that a fastening force of the second fastening part to the second fastening region is smaller than a fastening force of the first fastening part to the first fastening region . 2. The disposable diaper according to claim 1, wherein the fastening tape further includes a knob portion including a non-fastening portion that is not fastened to the fastening region at a portion on a distal end side thereof. 2. The cover has a fastening part (cover fastening fastening part) for fixing the cover to any of the front body, the crotch part, or the back body at an end thereof. Or the disposable diaper of 2 . The disposable diaper according to any one of claims 1 to 3 , wherein the cover extends from an edge of the front body and is folded back toward the crotch portion to cover the fastening tape. The said cover is attached to the said crotch lower part side from the said fastening area | region of the said front body, and covers the said fastening tape from the lower side of a diaper, The disposable as described in any one of Claims 1-3. Diapers. The cover is at least two attached to the central portion in the lateral direction of the time in the predecessor, any one of claims 1 to 3 folded back side edge direction is to cover the fastening tape of the time in the predecessor Disposable diapers described in 1.

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