TWI648038B - Wearing method of shorts type diaper and shorts type diaper - Google Patents

Abstract

[Question] A pants-type diaper that does not easily protrude beyond the underpants when it is worn under the underpants. [Solutions] The pants-type diaper of the present invention includes an absorbent body (10) including an absorbent body (11) and a skin-side non-woven fabric disposed on the skin side of the absorbent body (11). a non-skin side film (14) disposed closer to the non-skin side than the absorbent body (11), and an outer nonwoven fabric (16) disposed closer to the non-skin side than the non-skin side film (14); And a belt portion (32) which is disposed on both sides in the lateral direction, and connects end portions of the absorbent body (10) in the longitudinal direction, and the belt portion (32) is downward in the longitudinal direction Further, the two pairs of joint portions inclined outward in the lateral direction are joined to the absorbent body (10), and the minimum distance between the end of one side of the belt portion (32) in the longitudinal direction and the end of the other side is 50 mm or more and 100 mm or less, in the longitudinal direction, a region (10uf) of the absorbent body (10) which is closer to the upper side than the upper end of the non-skin side film (14) has a layer including the skin side nonwoven fabric (12) and the aforementioned Exterior non-woven fabric (1 6) At least 3 layers of the layer.

Description

Wearing method of shorts type diaper and shorts type diaper

[0001] The present invention relates to a method of wearing a pants-type diaper and a pants-type diaper.

[0002] Conventionally, in the case of an absorbent article, a disposable diaper which is formed into a pants type by a liquid absorbent body (a diaper main body) and a waist belt disposed on both sides of the absorbent body is known. For example, Patent Document 1 discloses a disposable diaper in which both end portions of a waistband are joined to the both end portions in the longitudinal direction of the diaper main body in an inclined manner by the both sides of the joint portion of the waist belt. A slit is formed to form a leg circumference (leg circumference opening). [Prior Art Document] [Patent Document] [0003] [Patent Document 1] Japanese Patent Laid-Open Publication No. 9-290003

(Problems to be Solved by the Invention) [0004] The pants-type diapers as described above are often worn under the undergarments in daily life or the like. At this time, it is preferable to wear the diaper in such a manner that it does not protrude from under the underpants. However, since a general diaper is composed of a sheet member having high flexibility such as non-woven fabric, in the operation of pulling up the diaper or the operation of adjusting the position, the sheet member is likely to be stretched when stretched, and the stretched portion is present. Prominent from the underwear. In particular, in order to bond the absorbent body, when the upper end portions of the abdominal side and the back side of the absorbent body are respectively stretched upward, the upper end portion is stretched, and a part of the absorbent body is easily protruded from the upper end of the underwear. Further, if the size of each portion of the diaper is larger than the size of the undergarment, the diaper is not easily stored under the undergarment. The present invention has been made in view of the conventional problems as described above, and an object thereof is to provide a pants-type diaper which is less likely to protrude beyond the undergarment when it is worn under the undergarment. (Means for Solving the Problem) [0006] The main invention for achieving the above object is a pants-type diaper having a waist-shaped opening portion and a pair of leg-opening portions, which are formed in a longitudinal direction and a lateral direction, which intersect each other, and which have a waist-shaped opening portion and a pair of leg-opening portions. The absorbent body includes an absorbent body that absorbs excretion liquid, a skin-side non-woven fabric that is disposed on the skin side closer to the skin than the absorbent body, and is disposed closer to the skin than the absorbent body. a liquid-impermeable non-skin side film on the side and an outer nonwoven fabric disposed closer to the non-skin side than the non-skin side film; and a belt portion disposed on each of the lateral sides to absorb the absorbent The end portions of the main body in the longitudinal direction are coupled to each other, and the belt portion is a pair of joint portions that are inclined toward the lower side of the longitudinal direction and the lateral outer side by the waist opening portion toward the leg-opening portion, and the absorption portion The main body is joined, and the minimum value of the distance between the end of one side of the belt portion and the end of the other side in the longitudinal direction is 50 mm or more and 100 mm or less. In the longitudinal direction, the region of the absorbent body that is closer to the upper side than the upper end of the non-skin side film has at least three layers including the skin side nonwoven fabric layer and the outer nonwoven fabric layer, and the joint portion is non-woven. The skin side is erected, and the end portion of the non-skin side has a dry edge in which the absorbent body and the belt portion are not joined, and the dry side of the both end portions in the longitudinal direction of the joint portion The width is shorter than the width of the dry side in the central portion in the longitudinal direction of the joint portion, and the width of the dry side in the central portion in the longitudinal direction of the joint portion is larger than the width of the joint portion. Shorter. Other features of the present invention will be apparent from the description and appended claims. (Effects of the Invention) According to the present invention, it is possible to provide a pants-type diaper which is less likely to protrude beyond the undergarment when it is worn under the undergarment.

[0009] At least the following matters are apparent from the description of the specification and the accompanying drawings. [0010] A pants-type diaper having a waist-shaped opening portion and a pair of leg-opening portions in a longitudinal direction and a lateral direction intersecting each other, comprising: an absorbent body comprising: An absorbent body that absorbs excretion liquid, a non-woven fabric that is disposed on the skin side that is closer to the skin side than the absorbent body, and a liquid-impermeable non-skin side film that is disposed closer to the non-skin side than the absorbent body, and is disposed. An outer nonwoven fabric that is closer to the non-skin side than the non-skin side film; and a belt portion that is disposed on each of the lateral sides and that connects the end portions of the absorbent body in the longitudinal direction, the belt The second pair of joint portions which are inclined toward the lower side of the longitudinal direction and the lateral outer side by the waist opening portion toward the leg-opening portion are joined to the absorbent body, and one of the belt portions in the longitudinal direction The minimum value of the distance between the end of the side and the end of the other side is 50 mm or more and 100 mm or less. In the longitudinal direction, the absorbent body is thinner than the non-skin side. The upper end of the film is closer to the upper side, and has at least three layers including the layer of the skin side nonwoven fabric and the layer of the outer nonwoven fabric. [0011] When the pant-type diaper as described above is worn over the panty, it is easy to stretch the belt portion obliquely upward together with the underpants, and the fit is easily improved. Further, the width of the belt portion is limited to a predetermined range, so that the belt portion is easily caught, and the belt portion does not easily protrude from the side portion of the underwear after wearing. Further, the upper end portion of the absorbent body has a three-layer structure, so that the strength of the portion becomes high, and when the absorbent body is pulled up, the portion is not easily stretched. Therefore, when the panty is worn over, the upper end portion of the absorbent body is less likely to protrude from the undergarment, and the absorbent body is firmly pulled up, whereby good fit can be achieved. [0012] In the pants-type diaper, it is preferable to have a liquid-impermeable hydrophobic sheet disposed closer to the skin side than the skin-side non-woven fabric. [0013] With the pants-type diaper as described above, a hydrophobic sheet is provided on the skin side surface of the longitudinal end portion of the absorbent body, thereby suppressing the excretion liquid absorbed by the absorbent body from returning to the skin side and oozing out. It is not easy to bring uncomfortable feeling to the wearer. Further, in the longitudinal end portion of the absorbent body, the strength of the region can be improved by laminating with the skin side non-woven fabric or the outer nonwoven fabric. [0014] In the pants-type diaper, it is preferable that the amount of stretch when the region of the absorbent body that is closer to the upper side than the upper end of the non-skin side film is stretched toward the upper side in the longitudinal direction by a force of 50 N is 1.0. Below mm. [0015] With the pants-type diaper as described above, when the diaper is worn, even in a case where the upper side of the absorbent body is stretched upward than the upper end of the non-skin side film, the area is not easily Stretching, suppressing the upper end portion of the absorbent body from being protruded from the undergarment. Further, by stretching the region, the absorbent body can be firmly pulled up, so that good fit can be achieved. In the pants diaper, it is preferable that the length in the longitudinal direction of the region closer to the upper side than the upper end of the non-skin side film in the absorbent body is 20 mm or more. [0017] With the pants-type diaper as described above, the region of the absorbent body that is closer to the upper side than the upper end of the non-skin side film is easy to grasp with the fingers when the wearer stretches the absorbent body when wearing the diaper. Therefore, the wearer can easily perform the operation of pulling up the absorptive body by forming a region of a size that is easy to grasp while sufficiently securing the strength of the region. [0018] In the pants-type diaper, it is preferable that the belt portion has an end-end structure in which the upper end portion is folded back in the longitudinal direction, and an area of the absorbent body that is closer to the upper side than the upper end of the non-skin side film. The length in the aforementioned longitudinal direction is shorter than the length in the aforementioned longitudinal direction of the portion of the belt portion having the aforementioned end end tail configuration. [0019] With the pants-type diaper as described above, the upper end region of the belt portion is stretched to a region closer to the upper side than the upper end of the non-skin side film, and is easily pulled up to the upper side together. . Therefore, by the operation of the pull-up absorbent main body, it is easy to adjust the position (height) of the entire waist opening portion including the belt portion, and the fit is improved, and the diaper is less likely to protrude from the underwear. [0020] In the pants-type diaper, it is preferable that the maximum value of the height of the wrinkles formed in the region on the ventral side of the absorbent body in the longitudinal direction of the upper end of the non-skin side film is On the back side of the absorbent body, the maximum value of the height of the wrinkles formed in the region in which the longitudinal direction is closer to the upper side than the upper end of the non-skin side film is smaller. [0021] With the pants-type diaper as shown above, when the diaper is overlapped and worn under the undergarment, the ventral side is suppressed, the underpants are excessively lifted to the non-skin side in the thickness direction, and the diaper is confused under the underpants. In the case, it is easy to obtain good fit. In addition, it is less noticeable to wear a diaper under the underpants. In the pants-type diaper, it is preferable that the front end of the longitudinal direction and the back side of the absorbent body have a front end projecting portion that protrudes upward in the longitudinal direction at the center of the longitudinal direction and the center of the lateral direction. [0023] With the pants-type diaper as shown above, the user can easily recognize the lateral center position of the diaper at a glance. Thereby, when the diaper is worn, the absorbent body can be easily attached to the correct position of the body, and the leakage of the excrement due to the wearing of the absorbent body in the laterally displaced state can be effectively suppressed. In the pants-type diaper, it is preferable that the front end projecting portion has a length that protrudes from the upper end of the joint portion in the longitudinal direction by 1 mm or more and 5 mm or less. [0025] With the pants-type diaper as described above, since the protruding length of the distal end protruding portion is set to 1 mm or more, it is suppressed that the distal end protruding portion becomes difficult to be visually recognized. Next, by forming the protruding length of the distal end protruding portion to 5 mm or less, it is possible to suppress the front end protruding portion from being curled or bent or protruding from the undergarment. Thereby, the front end protruding portion easily functions as a symbol indicating the center position in the lateral direction. In the pants-type diaper, it is preferable that the belt portion has a plurality of elastic members that expand and contract along a longitudinal direction of the belt portion, and the elastic member is one end of the belt portion in the longitudinal direction to the other One end is continuously configured. [0027] With the pants-type diaper as described above, since the elastic member does not have a discontinuous portion with respect to the longitudinal direction, there is no possibility that the force for stretching the belt portion in the oblique direction is broken on the way The member exhibits stretchability over the entire length of the belt portion in the longitudinal direction. Thereby, the effect of pulling up the absorbent body is improved, and the fit of the diaper can be further improved. [0028] In the pants-type diaper, it is preferable that the joint portion is provided to be erected on a non-skin side, and the end portion of the non-skin side is provided such that the absorbent body and the belt portion are not joined to each other. In the dry side, the width of the dry side in the both end portions in the longitudinal direction of the joint portion is shorter than the width of the dry side in the center portion in the longitudinal direction of the joint portion. [0029] With the pants-type diaper as described above, the width of the dry side is reduced in the vicinity of the waist opening or the leg opening, thereby suppressing the interference between the underwear and the joint, and the wearer can be worn when wearing the diaper. It is not easy to produce a sense of violation of waist circumference or leg circumference. In the pants type diaper, it is preferable that the lateral outer end of the belt portion and the longitudinal upper end are located closer to the upper side in the longitudinal direction than the upper end of the absorbent body in a natural state. [0031] With the pants-type diaper as shown above, the belt portion is inclined upward from the natural state, so when the belt portion is grasped and pulled up, the force is easily applied obliquely, and the force is easily transmitted to the absorbent body. Global. Thereby, the belt portion is easily pulled up obliquely upward, and the absorbent body is also easily stretched by being pulled up while being interlocked with the belt portion. Therefore, it is easy to improve the fit of the diaper. [0032] In the pants type diaper, preferably, in a natural state, the lateral outer end of the belt portion and the longitudinal lower end are located at a position other than the lateral outer end of the belt portion and the longitudinal direction. The position of the upper end is closer to the outer side of the aforementioned lateral direction. [0033] With the pants-type diaper as described above, the portions that are grasped by the hand, that is, the lateral end portions of the belt portion are formed obliquely, so that it is easy to grasp the belt portion and pull up. [0034] Further, a pants-type diaper having a waist-opening portion and a pair of leg-opening portions and a pair of pants-type diapers which are worn under the undergarments, which are formed in a longitudinal direction and a lateral direction which intersect each other, is characterized by The absorbent body is provided with an absorbent body that absorbs excretion liquid, a skin-side non-woven fabric that is disposed on the skin side closer to the skin than the absorbent body, and is disposed closer to the non-skin side than the absorbent body. a liquid-impermeable non-skin side film and an outer nonwoven fabric disposed closer to the non-skin side than the non-skin side film; and a belt portion disposed on each of the lateral sides, wherein the absorbent body is The end portions of the longitudinal direction are connected to each other, and the belt portion is a pair of joint portions that are inclined toward the lower side of the longitudinal direction and the lateral outer side by the waist opening portion toward the leg-opening portion, and the absorbent body The minimum value of the distance between the end of one side of the belt portion and the end of the other side in the longitudinal direction is 50 mm or more and 100 mm or less, the belt portion, and the aforementioned The lower part of the absorbent body is adjusted to a size hidden in the position of the aforementioned undergarment after wearing the aforementioned undergarment. [0035] With the pants-type diaper as described above, the underwear is superimposed on the diaper, whereby the feeling of discomfort when wearing the diaper is less likely to occur, and the wearer can feel the daily life by wearing the general underwear. At this time, the diaper is hidden under the underpants and is not conspicuous, so the wearer is not easy to realize that the diaper is being worn, and it is not easy to cause mental uneasiness. [0036] Further, a method of wearing a pants-type diaper having a waist opening portion and a pair of leg-opening portions, and an absorbent body, is provided. An absorbent body that absorbs excretion liquid, a skin-side non-woven fabric that is disposed on the skin side closer to the skin than the absorbent body, and a liquid-impermeable non-skin side film that is disposed closer to the non-skin side than the absorbent body. And an outer nonwoven fabric disposed closer to the non-skin side than the non-skin side film; and a belt portion disposed on each of the lateral sides to connect the end portions of the absorbent body in the longitudinal direction a pair of joint portions which are inclined toward the front leg opening portion and the lateral outer side by the waist opening portion, and the pair of joint portions are joined to the absorbent body, and the pants type diaper is worn by the method. The pants-type diaper is placed on the skin side of the underpants; the pants-type diaper and the leg-opening portion of the panty are passed through the wearer's foot. Thereafter, the belt portion is pulled up obliquely upward together with the side portions of the aforementioned underpants; and in the ventral side and the back side, together with the aforementioned longitudinal upper end portion of the aforementioned undergarment, the aforementioned longitudinal upper end portion of the aforementioned absorbent body Pull up from above. [0037] With the wearing method of the pants-type diaper as described above, the underwear is superimposed on the diaper, whereby the feeling of discomfort when wearing the diaper is less likely to occur, and the wearer can feel the daily life by wearing the general underwear. Next, by wearing the underpants and the diaper together, the position of the diaper is not easily deviated from the underpants, and in addition, the diaper can be worn without protruding from under the underpants. [0038] === Embodiments === A disposable diaper 1 (hereinafter also referred to as a diaper 1) which is an example of the absorbent article of the present embodiment will be described. The diaper 1 of the present embodiment can be worn under the undergarments, and in this case, the respective portions can be configured so as not to be worn from the underpants. Fig. 1 is a schematic perspective view of a diaper 1. The diaper 1 has been formed into a pants-type state as shown in Fig. 1 at the time of wearing. Next, in the pants type, the same diaper 1 has a longitudinal direction and a lateral direction and a front-rear direction orthogonal to each other. Among them, when the same diaper 1 is worn, the longitudinal direction is mostly in the up and down direction. Therefore, the vertical direction is also referred to as "up and down direction" below. Further, in the up and down direction, the upper side corresponds to the waist side of the wearer, and the lower side corresponds to the underarm side of the wearer. On the other hand, regarding the front-rear direction, the front side corresponds to the ventral side of the wearer, and the rear side corresponds to the back side of the wearer. [0039] In the same pants type, the diaper 1 has a belt-shaped absorbent body that is folded in a substantially central position CLL10 (FIG. 2A) in the same longitudinal direction along the longitudinal direction in the vertical direction. 10; each of the belt portions 32, 32 that connect the end portions 10eLf, 10eLb in the longitudinal direction of the absorbent body 10 to each other in the lateral direction; and in the lateral direction of the absorbent body 10, respectively The leg flange portions 37 and 37 of the leg-opening portion LH are formed on both sides. That is, one end portion 10eLf of each of the end portions 10eLf and 10eLb of the absorbent body 10 is located above and on the front side, and the other end portion 10eLb is located on the upper side and the rear side. Further, on the front side of the diaper 1, the front side joint portions jf, jf (corresponding to the joint portion) which are inclined from the upper side in the longitudinal direction and the outer side in the lateral direction are provided in a lateral direction, and are similarly arranged in the diaper. The rear side of the first side is also provided with a pair of lateral joint portions jb, jb (corresponding to the joint portion) which are inclined from the upper side toward the lower side in the longitudinal direction and which are inclined outward from the inner side in the lateral direction. Next, the end portions 10eLf of the absorbent body 10 on the front side are joined to the lateral end portions 32eLf, 32eLf of the respective belt portions 32, 32 by the pair of front side joint portions jf, jf of the former, and the legs on the front side are joined The end portions 37eLf, 37eLf of the hemming portions 37, 37 are joined to the lateral end portions 32eLf, 32eLf of the respective belt portions 32, 32. Further, similarly, the end portion 10eLb of the absorbent body 10 located on the rear side is engaged with the lateral end portions 32eLb, 32eLb of the respective belt portions 32, 32 by the pair of rear side joint portions jb, jb of the latter, and The end portions 37eLb, 37eLb of the leg flange portions 37, 37 on the rear side are joined to the lateral end portions 32eLb, 32eLb of the respective belt portions 32.

Then, in the same pants type state, the waist opening portion BH is formed in the upper portion of the diaper 1 by the respective end portions 10eLf, 10eLb of the absorbent main body 10 and the upper end portions of the respective belt portions 32, 32. Further, a pair of leg-opening portions LH and LH are formed on both sides in the lateral direction by the laterally outer end portions of the leg-folding portions 37 and 37 and the lower end portions of the respective belt portions 32 and 32.

In addition, each of the belt portions 32 is arranged such that a plurality of the thread rubbers 33, 33 and the like are arranged in the vertical direction in the vertical direction, whereby the belt portions 32 are provided with lateral stretchability. On the other hand, each of the leg cuff portions 37 is also arranged in the lateral direction so as to be disposed along the plurality of the thread rubbers 38 and 38 in the longitudinal direction of the absorbent body 10, whereby the leg cuff portions 37 are given the up and down direction. Scalability. Then, based on the stretchability, the waist opening portion BH and the leg circumference opening portion LH of the diaper 1 are respectively attached to the waist circumference or the leg circumference of the wearer.

Further, as shown in FIG. 3, the belt portion 32 is a portion in which the waist opening portion BH is formed (the lateral outer end portion of the belt portion 32 in Fig. 3) extends straight, On the other hand, the portion (the lateral inner end portion of the belt portion 32 in FIG. 3) that forms the leg-opening portion LH is a curve (R shape) that is convex toward the waist opening portion BH side. Thereby, in the state in which the pants type is formed, the leg-opening portion LH is easily curved along the circumference of the panty leg, and the diaper 1 is less likely to protrude from the underwear even in the case of wearing under the underpants. In addition, the wearing action of the diaper 1 (details of the wearing operation will be described later) by the curved shape as described above, when the belt portion 32 is pulled up obliquely upward, the force obliquely upward is easily applied to the shorts. The lateral end portion of the belt portion 32 in the shape of the belt can smoothly pull up the belt portion 32 obliquely upward.

The diaper 1 shown above is formed in the final stage of its manufacturing process in the state of an extended flat plate as shown in Figs. 2A and 2B. 2A is a schematic plan view of the diaper 1 in a state in which the stretched flat plate is viewed from the side of the belt portion 32, and FIG. 2B is a cross-sectional view taken along line B-B in FIG. 2A. In Fig. 3A, in the diaper 1 in the extended flat state of Fig. 2A, the respective joints of the front side joint portions jf and jf and the rear side joint portions jb and jb are unwound to see the skin side surface of the absorbent body 10, respectively. A schematic plan view showing a state in which the belt portions 32 and 32 are opened outward in the lateral direction, and Fig. 3B is a cross-sectional view taken along line BB in Fig. 3A. Fig. 4 is a schematic cross-sectional view showing the structure of a C-C cross section of Fig. 3A. In addition, the wavy lines shown in FIGS. 2B, 3B, and 4 are those in which the adhesive is displayed in a mode, and the portion shown in the hatched pattern of the left oblique line is displayed in a mode to show the welded portion.

The diaper 1 of the stretched flat state of FIG. 2A corresponds to the diaper 1 of the pants-type state of FIG. 1 so that the absorbent body 10 is folded in the front-back direction parallel to the longitudinal direction thereof so as to cancel the folding of the absorbent body 10. The sides are stretched and stretched. Next, in the extended flat state, as shown in FIG. 2B, the respective skin sides of the absorbent body 10 and the leg folded portions 37, 37 are formed such that the respective belt portions 32, 32 overlap. By the way, when the end portions 32eW1 and 32eW1 of the inner side of the pair of belt portions 32 and 32 in the diaper 1 in the state of the flat plate are stretched outward in the lateral direction, respectively, the absorbent property is absorbed. The main body 10 is folded in half at a substantially central position CLL10 in the longitudinal direction, and the diaper 1 is in a pants-type state as shown in FIG. Further, in the extended flat state, the diaper 1 has a longitudinal direction and a lateral direction and a thickness direction which are orthogonal to each other. Then, the longitudinal direction is parallel to the longitudinal direction of the pants-type state. In addition, the one side and the other side of the longitudinal direction correspond to the ventral side of the wearer, that is, the front side and the back side, that is, the rear side. Therefore, the one side and the other side are also referred to as "front side". And "back side". Further, in the extended flat state, the longitudinal direction of the diaper 1 is aligned with the longitudinal direction of the absorbent body 10, the belt portion 32, and the leg folded portion 37. Therefore, the following is not referred to as "longitudinal direction". On the other hand, the horizontal direction is the same as the lateral direction of the pants type state, and hereinafter simply referred to as "horizontal direction". Further, regarding the thickness direction, the side contacting the wearer's body is also referred to as "skin side", and the opposite side is also referred to as "non-skin side". [0047] Further, in the state of the extended flat plate, the diaper 1 is formed in a state of being elongated in the longitudinal direction, but the so-called "elongated state" means resistance to each elastic member (for example, a belt portion) disposed in the diaper 1. When the diaper 1 is elongated in the longitudinal direction by the contraction force by the thread rubber 33 of the 32 or the thread rubber 38 of the leg hem portion 37, the diaper 1 is elongated until the portion where the elastic members are disposed substantially becomes invisible The state of the degree of pleats or hem. Therefore, the shape of the diaper 1 in a state of being elongated in the longitudinal direction is the same as the shape of the diaper 1 which is flatly extended in a state where the contraction force by the respective elastic members is not exhibited. [0048] Hereinafter, the configuration of the same diaper 1 will be described with reference to the diaper 1 in the state in which the flat plate is extended. In the extended flat state of FIGS. 2A and 2B, the leg folded portions 37, 37 are respectively located on both sides of the lateral direction of the absorbent body 10, and are overlapped on the skin side of the absorbent body 10 and the leg folded portions 37. In the manner of the skin side of 37, the pair of belt portions 32, 32 are arranged in the lateral direction. [0049] The belt portion 32 and the leg folded portion 37 are formed by the same sheet member 30. In other words, as shown in FIG. 3A and FIG. 3B, the sheet members 30 and 30 are disposed one by one on both sides in the lateral direction of the absorbent body 10, and the laterally inner end portions 30eW of the sheet members 30 and 30, The 30eW is joined to each of the end portions 10eW and 10eW in the lateral direction of the absorbent body 10, respectively. In detail, the inner end portion 30eW is interposed between the top sheet 12 and the back sheet 14 or the outer sheet 16 which will be described later, which constitutes the absorbent body 10, and is joined by an adhesive or welding. Sheets 12, 14, 16. Further, as shown in FIG. 3B, a turn-back line FL along the longitudinal direction is set between the portion which becomes the belt portion 32 in the sheet member 30 and the portion which becomes the leg-folded portion 37. Next, each of the sheet members 30 is formed with a leg-opening portion LH penetrating in the thickness direction so as to straddle the return line FL in the lateral direction. Therefore, the sheet member 30 is folded back toward the inner side in the lateral direction by the return line FL, whereby the belt portion 32 and the leg folded portion 37 are formed. Next, the absorbent body 10 and the leg folded portions 37 and 37 are joined to the respective belt portions 32 and 32 by the front side joint portions jf and jf and the rear side joint portions jb and jb shown in FIG. 2A, and are fixed to the above. In the folded-back state, the diaper 1 in the above-described extended flat state is formed.

The formation of the front side joint portion jf and the rear side joint portion jb is performed, for example, by a heat sealing or ultrasonic sealing or the like by a heat treatment, or by an adhesive treatment, which is performed by a welding process. .

Further, as shown in FIG. 3B, the sheet member 30 is formed by, for example, forming the flexible sheets 30a and 30a such as non-woven fabric in a thickness direction in two pieces, and then, the two overlapping sheets 30a and 30a are placed on each other. In the meantime, the thread rubbers 33 and 38, that is, the thread rubbers 33 and 33 of the belt portion 32 and the thread rubbers 38 and 38 of the leg flange portion 37 are fixed in a state of being elongated in the longitudinal direction.

In addition, in this example, as shown in FIG. 2B, the end portion of the belt portion 32 which becomes the waist opening portion BH is provided with a terminal end structure for the skin pressure reduction. In the diaper 1 in the extended flat state, the lateral inner end portions 32eW1 and 32eW1 of the belt portion 32 are portions that become the waist opening portion BH, but the end portions 32eW1 and 32eW1 are folded back in the lateral direction. The folding state is fixed by an adhesive or the like, whereby the load on the wearer's skin is reduced. In addition, the thickness of the end portion (the end portion on the side of the waist opening portion BH) closer to the lateral direction than the lateral center portion of the belt portion 32 is thickened by the end end tail structure as described above. Thereby, the cushioning property in the waist opening portion BH becomes high, and when the diaper 1 is worn, the upper end portion (end end structure) of the belt portion 32 is disposed at the vertex position of the pelvis (tibia) of the wearer. Closer to the upper side, the portion having the thickness is caught at the outward projection of the pelvis, whereby the belt portion 32 is less likely to slip down to the lower side. Therefore, the fit of the diaper 1 can be improved. However, it is not limited to this. That is, the end portion end structure may be omitted without folding back the end portion 32eW1.

As shown in FIG. 3A, each of the end portions 10eLf and 10eLb in the longitudinal direction of the absorbent body 10 is tapered to form a sheet-like member having a substantially V-shape in plan view. In other words, each of the end portions 10eLf and 10eLb of the absorbent main body 10 in the longitudinal direction has a shape corresponding to the pair of front side joint portions jf and jf and the pair of rear side joint portions jb and jb. Further, as shown in FIG. 3B, the same absorbent body 10 has an absorbent body 11 that absorbs excretion liquid such as urine, and a top surface sheet 12 that is disposed on the skin side closer to the skin side than the absorbent body 11; The absorbent body 11 is closer to the liquid-impermeable back sheet 14 on the non-skin side, and the outer sheet 16 is disposed closer to the non-skin side than the back sheet 14.

Next, each of the members 11, 12, 14, and 16 is joined to a member adjacent in the thickness direction by a hot melt adhesive or welding. In other words, in the respective end portions 10eLf and 10eLb in the longitudinal direction of the absorbent body 10, the members 11, 12, 14, and 16 are joined in a laminated state, and are fixed in the longitudinal direction. Thereby, each of the end portions 10eLf and 10eLb is less likely to extend in the longitudinal direction (longitudinal direction in the shape of the pants), and the absorbent body 10 is easily accommodated in the undergarment. The influence of the extension of each of the end portions 10eLf and 10eLb will be described later. In addition, the coating pattern of the adhesive which joins each member can be exemplified by an Ω pattern, a spiral pattern, a stripe pattern, etc., and this is not only for other adhesives which appear later, but also for the above-mentioned adhesives. with.

Further, when the diaper 1 is worn under the undergarment, since the diaper 1 is hidden in the underpants, the dimension of the longitudinal direction of the absorbent body 10, that is, the length of the article is preferably as short as possible. Specifically, it is preferably 450 to 750 mm. In other words, if it is less than 450mm, it will not cover the buttocks, which will help to feel uncomfortable. If it exceeds 750mm, it will exceed the waistline, and it will cause a sense of discomfort when worn. However, if it is formed into the above range, it can prevent such situations, and the diaper 1 is not easy to get from the underwear. protruding.

In addition, the absorbent body 10 of the present embodiment has an outer side in the longitudinal direction (the upper side in the longitudinal direction of the pants shape) in an arc shape in the center of the lateral direction and the end portion on the side in the longitudinal direction. Front end projection 10s. When the diaper 1 is formed into a pants shape, the front end protruding portion 10s protrudes upward from the upper end (end portion 32eW1) of the belt portion 32 in the center in the lateral direction (refer to FIG. 1 and the like), whereby the user easily The lateral center position of the diaper 1 (absorbent body 10) is recognized. Thereby, when the diaper 1 is worn, the absorbent body 10 can be easily attached to the correct position of the body, and the occurrence of leakage of the excrement due to the wearing of the absorbent body 10 in the laterally displaced state can be suppressed. .

In the case where the operation of wearing the diaper 1 is started, it is confirmed whether or not the diaper 1 is accommodated in the undergarment in the front side and the back side, so that the front end protruding portion 10s is provided on the back side and the ventral side of the absorbent body 10. Both ends are suitable (see Fig. 2, Fig. 3, etc.). Therefore, when the diaper 1 is worn, it is easy to visually recognize the back side and the ventral side, and the center part of the diaper 1 does not protrude from the underwear, and can be easily adjusted so that the whole diaper 1 does not protrude from the underwear.

The absorber 11 has a liquid-absorbent absorbent core (not shown) and a core sheet (not shown) that covers the outer peripheral surface of the core. The absorbent core is formed into a predetermined shape by forming a predetermined liquid absorbing material. In the example of FIG. 3A, it is a substantially rectangular molded body in a plan view in which the front end and the rear end have arc-shaped portions. However, it is not limited to this. In addition, the liquid-absorbent material such as a liquid absorbent fiber such as pulp fibers or a highly absorbent polymer (so-called SAP) may be exemplified, but is not limited thereto. Further, in the core sheet, a liquid permeable sheet such as a face paper or a non-woven fabric may be used, but the core sheet may be omitted as appropriate. Among them, the dimension in the longitudinal direction of the absorbent body 11 is preferably from 35 to 85% of the length of the above-mentioned product. The reason is based on the fact that if the absorbent body 11 cannot cover the inter-turn portion and leaks if it is not more than 35%, on the other hand, if it exceeds 85%, it may cause a feeling of discomfort during wearing.

When the width of the absorber 11 in the lateral direction is W11 (that is, the distance between the end of the one side of the absorber 11 in the lateral direction and the end of the other side), W11 is 50 mm or more and 120 mm or less. It is suitable (120mm ≧ W11 ≧ 50mm). By forming the width W11 of the absorbent body 11 to 120 mm or less, when the diaper 1 is worn under the undergarment, it is easy to accommodate the absorbent body 11 in the crotch portion without delay in the crotch portion. In addition, by forming the width W11 to 50 mm or more, it is easy to sufficiently ensure the area (absorption capacity) for absorbing excrement or the like.

Further, a plurality of groove portions 17 are formed on the surface of the absorber 11. In the present embodiment, the groove portion 17 includes a first groove portion 171, a second groove portion 172, and a third groove portion 173 (see FIG. 2). The groove portion 17 is formed in a linear shape along the longitudinal direction in the center of the lateral direction of the absorber 11. The second groove portion 172 passes through the center in the lateral direction of the first groove portion 171 and faces the rear side in the longitudinal direction while intersecting with a straight line along the longitudinal direction (that is, a straight line corresponding to the extension line of the first groove portion 171). The back side is expanded toward the outer side of the lateral direction to form a parabolic shape. The third groove portion 173 is formed in a parabolic shape that extends toward the front side (ventral side) in the longitudinal direction and extends outward in the lateral direction while intersecting the first groove portion 171, on the front side in the longitudinal direction of the second groove portion 172. [0061] The groove portions 17 each press the press portion formed on the surface of the absorber 11 by a predetermined pressing means. However, the groove portion 17 is not formed as a press portion of the press absorbing body 11, and may be formed as a slit. In addition, it may be formed by arranging a plurality of press portions of a dot shape or other shapes instead of being formed in a line shape as shown in FIG. The first groove portion 171 has a function as a bending inducing portion that induces the absorber 11 to be bent in the thickness direction. Specifically, when the diaper 1 is worn, the absorbent body 11 is bent along the first groove portion 171 to form a mountain shape that protrudes toward the wearer's skin side along the first groove portion 171, thereby being able to be worn. The body shape of the person causes the absorbent body 11 to be appropriately deformed. Among them, the diaper 1 of the present embodiment is imaginarily worn under the undergarment, and the absorbent body 11 is disposed at a position closer to the wearer's body than the undergarment. Since the inter-turn width (the width of the crotch portion) of the general pants is in the range of 50 to 80 mm, the absorbent body 11 is deformed by providing the first groove portion 171, whereby the crotch portion can be widened within the crotch portion width of the underpants. The absorbent body 11 is reliably housed. That is, by forming the above-described size range (120 mm ≧ W11 ≧ 50 mm), the absorbent body 11 is three-dimensionally deformed along the concave-convex shape of the body, and the lateral width of the absorbent body 11 can be narrowed. Thereby, in the crotch portion, the absorbent body 11 is less likely to protrude more from the undergarment. Further, in a region closer to the back side than the region in which the first groove portion 171 is disposed, the force for deforming the absorber 11 into a mountain shape is transmitted to the outside of the lateral direction by the second groove portion 172, and the absorber The 11 is easily held in a planar shape in the back side region, so that it is easy to fit on the flat portion of the wearer's back. Further, since the absorber 11 is easily deformed into a curved shape along the parabola of the third groove portion 173, good adhesion to the arc of the wearer's buttocks can be achieved. [0064] The top sheet 12 is formed of a liquid permeable sheet such as a nonwoven fabric, and an air flow non-woven fabric is used here. That is, the top sheet 12 corresponds to "skin side non-woven fabric". The planar size of the top sheet 12 is as shown in FIG. 3A, and is a size as protruded from both sides in the longitudinal direction of the absorbent body 11 and both sides in the lateral direction. Then, the laterally projecting portions 12eW and 12eW are bent toward the non-skin side and the laterally inner side as shown in Fig. 3B, whereby the protruding portions 12eW, 12eW also cover the lateral end portions of the absorbent body 11 by the non-skin side. 11eW. Therefore, the lateral end portions 12eW, 12eW of the top sheet 12 do not rub against the skin, so the feeling of discomfort during wearing is reduced. [0065] The back sheet 14 is formed of a liquid-impermeable sheet such as a polyethylene film or a polypropylene film. That is, the back sheet 14 corresponds to the "non-skin side film". The back sheet 14 is also a sheet member having a planar size as protruded from both sides in the longitudinal direction of the absorbent body 11 and both sides in the lateral direction. [0066] The exterior sheet 16 is formed of a soft sheet such as a nonwoven fabric. That is, the exterior sheet 16 corresponds to "outerwear nonwoven fabric". The exterior sheet 16 is a sheet member having a size that protrudes from both sides in the longitudinal direction of the back sheet 14 and both sides in the lateral direction. [0067] Incidentally, in the following description, there is a case where the expression "the skin side surface of the absorbent body 10" is used, but the sheet forming the skin side surface of the absorbent body 10 depends on the plane position of the body 10. change. That is, at the position where the top sheet 12 is present, the skin side surface of the top sheet 12 forms the skin side surface of the absorbent body 10. However, in the position where the back sheet 14 is present without the top sheet 12, the skin side surface of the back sheet 14 forms the skin side surface of the absorbent body 10, and the top sheet 12 and the back sheet 14 do not exist. At the position, the skin side surface of the exterior sheet 16 forms the skin side surface of the absorbent body 10. [0068] Each of the end portions 10eLf and 10eLb in the longitudinal direction of the absorbent body 10 is provided with a hydrophobic sheet 50, 50 so as to cover the side surface of the skin of the absorbent body 10 (refer to FIG. 3, reference is made to FIG. The part of the point pattern). That is, a hydrophobic sheet 50 is laminated on the skin side of the top sheet 12 (skin side non-woven fabric). Each of the end portions 10eLf and 10eLb in the longitudinal direction of the absorbent body 10 is a portion that can face the wearer's abdomen or buttocks when the diaper 1 is worn, and the skin side of each of the end portions 10eLf and 10eLb When the excretion fluid gets wet, there is a feeling of discomfort to the wearer. On the other hand, the hydrophobic sheet 50 is provided on the skin side surface of each of the end portions 10eLf and 10eLb, whereby the excretion liquid absorbed by the absorbent main body 10 is prevented from returning to the skin side and oozing out, so that it is not easy for the wearer to bring it. Comfortable. [0069] wherein, the top sheet 12, the back sheet 14, the exterior sheet 16, and the hydrophobic sheet 50 are both shown in the longitudinal direction (longitudinal direction) closer to the upper end 11eLf than the absorber 11 as shown in FIG. (waist side) protruding part. Further, the top sheet 12, the exterior sheet 16, and the hydrophobic sheet 50 have portions that protrude above the upper end (waist side) of the upper end 14eLf of the back sheet 14. In the diaper 1 of the present embodiment, the top surface sheet 12 is included in the upper portion 10uf of the absorbent body 10 which is closer to the upper side than the upper end 14eLf of the back sheet 14 (non-skin side film). At least three layers of the outer sheet 16 and the hydrophobic sheet 50. In FIG. 4, the cross-sectional structure of the absorbent body 10 is shown only for the abdominal side in the longitudinal direction, but the absorbent body 10 also has substantially the same cross-sectional structure for the back side. In other words, the absorbent main body 10 has at least three layers in a region 10ub (none of which is shown) which is closer to the upper side than the upper end 14eLb on the back side of the back sheet 14 (non-skin side film). [0070] Next, at the end portions 10eLf, 10eLb in the longitudinal direction of the absorbent body, the respective layers (sheet members) are joined to each other in a laminated state. In the case of a general pants-type diaper, the laminated sheet members are joined to each other by an elastic member (wire rubber) interposed therebetween. That is, the sheet members having the laminated layers are bonded to each other at a portion where the elastic members are present, but the portions where the elastic members are not joined are not joined to each other, and the portions where the sheets are not joined when the sheet members are stretched are easily stretched. On the other hand, in the present embodiment, since the laminated sheet members are joined to each other in a plane, the entire structure has a structure that is not easily stretched. [0071] === Regarding the wearing form of the diaper 1 === As described above, the diaper 1 of the present embodiment can be worn under the undergarment. In particular, when an adult wears underpants from above the diaper 1, it is not easy to produce a feeling of discomfort when wearing the diaper, and the wearer can wear the general underwear and feel the daily life. If the diaper 1 is worn together with the underpants, the diaper 1 is placed on the inner side (skin side) of the undergarment in advance, and after the leg opening portion passes through the wearer's foot, the diaper 1 is pulled up together with the underwear, thereby being effortlessly Wear diapers 1 and underwear. Of course, it is also possible to wear the underpants from above after wearing the diaper 1. [0072] FIG. 5 is a schematic view showing a state in which the wearer wearing diaper 1 is viewed from the front side (ventral side) and the underpants are put on the pants. In the same Fig. 5, the underpants are indicated by solid lines, and the diaper 1 is indicated by broken lines. Fig. 6 is a schematic plan view showing a diaper 1 of a pants-type shape viewed from the front side (ventral side) in a natural state. "Natural state" refers to a state in which the diaper 1 is placed for a predetermined period of time. For example, the belt portion 32 of the diaper 1 is stretched toward both outer sides in the lateral direction, and the belt portion 32 and the absorbent main body 10 are formed in an "extended state", and the stretched state is continued for 15 seconds, and then the stretching of the diaper 1 is released. And placed on a flat surface such as a table. Next, the state after the lapse of 5 minutes in the plane flat state shown above is a natural state. Fig. 7 is a schematic plan view showing a state in which the pants-type diaper 1 is elongated in the longitudinal direction and the lateral direction. Here, the "state in which it is stretched" in Fig. 7 is synonymous with the "extended state" described above. Further, in the natural state, the belt portion 32 is inclined obliquely with respect to the lateral direction as shown in Fig. 6, but in an elongated state, it is formed into a shape elongated in the lateral direction as shown in Fig. 7 . When the diaper 1 is worn over the underwear, as shown by the thick dotted arrow in FIG. 5, the lateral side portions of the belt portion 32 of the diaper 1 and the side portions of the undergarment are grasped in an oblique direction. Stretching action. In the diaper 1, the pair of belt portions 32 and 32 disposed on the lateral sides are respectively obliquely joined to the absorbent body 10 by the front side joint portions jf and jf (the rear side joint portions jb and jb), and thus are in a natural state. Next, the longitudinal direction of the belt portion 32 faces the obliquely upward direction. Specifically, as shown in FIG. 6, when the laterally outer end and the longitudinally upper end of the belt portion 32 are the upper end 32eou, the position of the upper end 32eou is higher than the upper end of the absorbent body 10 in the natural state. The position of the upper end of the projection 10s is closer to the upper side of the longitudinal direction. Further, when the laterally outer end and the longitudinal lower end of the belt portion 32 are the lower end 32eod, the position of the lower end 32eod is closer to the lateral direction than the position of the upper end 32eou in the natural state. With this configuration, the belt portion 32 in the natural state is inclined toward the outer side in the lateral direction and the upper side in the longitudinal direction with respect to the absorbent body 10. Next, the belt portion 32 is provided with the thread rubber 33 along the longitudinal direction. Therefore, the thread rubber 33 is elongated in the longitudinal direction by the force of stretching the belt portion 32 in the obliquely upward direction, and the belt portion 32 is extended. Show flexibility. By the stretchability, the absorbent body 10 is efficiently stretched upward in the oblique direction from both sides in the lateral direction by the belt portion 32 and the front joint portion jf, and the absorbent body 10 is easily fitted while being expanded in the width direction. In the wearer's crotch. [0075] In a general diaper, the elastic member is disposed so as to be laterally stretched and contracted. Therefore, if the force is to be applied in an oblique direction, it is necessary to perform the action of stretching in the lateral direction and then pulling in the longitudinal direction, and any part of the belt member is easy. Deformation occurs. On the other hand, in the configuration of the diaper 1, in the natural state, the belt portion 32 faces obliquely upward, so that when the grip belt portion 32 is pulled up, the force is easily applied obliquely, and when the belt portion is pulled upward, the force is not Focusing locally, the force is easily transmitted to the entire area of the absorbent body 10 located on the extension line of the belt portion 32. That is, the absorbent body 10 which is not easily stretched by the stretching force by the thread rubber 33 is easily pulled up. Further, the portion grasped by the hand when the diaper 1 is worn, that is, the lateral end portions of the belt portion 32 is also formed obliquely (based on the positional relationship between the upper end 32eou and the lower end 32eod), so that the belt portion 32 can be easily pulled up. [0076] wherein the general underpants are formed of materials that are easily stretchable in the longitudinal direction and the transverse direction (for example, polyurethane elastic fibers, etc.), so that if the belt portion of the diaper does not have sufficient stretchability, when the diaper and the underpants are overlapped, The expansion and contraction of the belt portion cannot follow the expansion and contraction of the undergarment, and it is difficult to wear both. Further, in general, the disposable diaper is in a natural state, the belt portion is not oriented obliquely, and the joint portion where the absorbent body and the belt portion are joined is not oriented in the oblique direction. Therefore, although the force for stretching the belt portion is easily transmitted to the lateral direction, it is not easily transmitted to the longitudinal direction, and it is not easy to interlock with the force of the underwear. On the other hand, in the diaper 1 of the present embodiment, the joint portions jf and jb are formed obliquely, and the belt portion 32 is oriented obliquely in the natural state, and the lateral end portion of the belt portion 32 is also oriented obliquely. The force is easily applied in an oblique direction. Thereby, the force of the upward pulling up which occurs when the panties which are stretchable in the longitudinal direction or the lateral direction are easily extended is interlocked with the belt portion 32, and as a result, the diaper 1 can be worn without being detached from the underpants. Further, the minimum value of the width in the longitudinal direction of the belt portion 32 is set to h32 (refer to FIG. 7). That is, the minimum value of the distance between the end of one side of the belt portion 32 and the end of the other side in the h32 longitudinal direction. In the diaper 1, it is prescribed that the distance h32 is 50 mm or more and 100 mm or less (100 mm ≧ h 32 ≧ 50 mm). By setting h32 to 100 mm or less, when the diaper 1 and the underpants are overlapped, the belt portion 32 is less likely to protrude from the side portion of the undergarment. On the other hand, when h32 is 50 mm or more, the contact area between the wearer's skin and the belt portion 32 can be sufficiently ensured, and the friction between the belt portion 32 and the wearer's skin can easily suppress the belt portion 32 from slipping. Or a situation in which the circle becomes thinner and thinner. In addition, when the adult grasps the object, the length of the index finger and the thumb is extended to about 100 mm. Therefore, if the size is as shown above, the adult can easily grasp the belt portion 32 with one hand, and the belt portion 32 can be stably inclined upward. The action of stretching in the direction. By these, the fit of the belt portion 32 can be improved, and it is difficult to protrude from under the undergarment. [0079] After the belt portion 32 is stretched upward obliquely upward, as shown by the thick solid arrow in FIG. 5, the ventral end portion 10eLf of the absorbent body 10 and the back side end portion 10eLb (in FIG. 5) The operation is performed by pulling up the upper side and pulling the absorber 11 to the crotch portion. In the pull-up operation, the upper end (edge) of the end portion 10eLf (10eLb) of the absorbent body 10 is often caught and stretched. However, if the diaper is formed of soft material such as non-woven fabric, it is pulled. The stretched part is stretched. In particular, since the diaper 1 of the present embodiment is imaginarily overlapped and worn under the undergarment, if the end portion 10eLf (10eLb) is stretched, the stretched portion protrudes from the undergarment. Further, since the nonwoven fabric is stretched, the absorbent body 11 cannot be pulled up firmly, and the fit is deteriorated. On the other hand, in the diaper 1, in the end portion 10eLf (10eLb) in the longitudinal direction of the absorbent body 10, a predetermined number of sheet members are laminated to increase the strength, whereby the region is not easily stretched. Specifically, as shown in FIG. 4, the absorbent body 10 is configured in the end portion 10eLf so as to have a laminated structure of at least three or more layers. For example, in the vertical direction, in the region 10uf which is closer to the upper side than the upper end 14eLf of the back sheet 14 (non-skin side film), there are a top sheet 12 (skin side non-woven fabric), an exterior sheet 16 (outerwear non-woven fabric), and The hydrophobic sheet 50 is formed into three layers. Further, in the longitudinal direction, in the region 10mf between the upper end 14eLf of the back sheet 14 and the upper end 11eLf of the absorbent body 11, in addition to the above three layers, there are four layers including the back sheet 14 (non-skin side film), and thus the strength More improved. Further, in addition to this, other non-woven fabrics or the like may be laminated. [0081] FIG. 8 is a graph showing the results of tests conducted on tensile strength of a diaper. In the same manner as in FIG. 8, the diaper 1 of the present embodiment and the diapers (known products) of the two types of products formed by the nonwoven fabric are used as the sample 1 and the sample 2, and the longitudinal direction of the absorbent main body 10 is shown. The relationship between the load and the extension when the end region (corresponding to the region of the region 10uf) is stretched toward the upper side in the longitudinal direction. [0082] Each of the sample 1 and the sample 2 has a belt member which is continuous in the lateral direction, and the number of layers of the sheet member in the region corresponding to the end portion 10eLf (the region 10uf in the diaper 1) is 2 or less. Disposable diapers. More specifically, the sample 1 is disposed in the lateral direction in an elastic member (filament rubber) exhibiting stretchability in the lateral direction, and the elastic member has a discontinuous portion in a central portion (a portion corresponding to the region 10uf) in the lateral direction. Next, in the discontinuous portion, the two non-woven fabrics which are laminated with the elastic member interposed therebetween are formed to be non-joined. On the other hand, in the sample 2, the elastic members (filament rubber) exhibiting stretchability in the lateral direction are continuously arranged in the lateral direction, and the two nonwoven fabrics disposed between the elastic members are transmitted through the elastic members in the lateral center portion (equivalent Engaged in the portion of the region 10uf). The sample 1, the sample 2, and the diaper 1 shown above were stretched by a tensile tester in a region corresponding to the region 10uf, and the amount of stretching when the load was increased was measured. That is, in the sample 1, a tensile test was performed on a portion where the two sheet members were not joined, and in the sample 2, a tensile test was performed on a portion where the two sheet members were intermittently joined, in the diaper 1, A tensile test was performed on a portion where three sheet members were joined in the longitudinal direction (longitudinal direction). As a result, the load was increased and the amount of stretching was increased in either of them. In Sample 1, the amount of stretching at a load of 50 N was about 7 mm, and the load at the time of stretching was about 70 N, making it difficult to perform accurate measurement thereafter. Next, in the sample 2, the amount of stretching at a load of 50 N was about 16 mm, and the load at the time of stretching was about 100 N, and it was difficult to perform accurate measurement thereafter. On the other hand, in the diaper 1 of the present embodiment, the amount of stretch at a load of 50 N is 1 mm or less, the amount of stretch at a load of 100 N is about 2 mm, and then the load at the limit of stretch is about 300 N. As described above, it is clear that in the diaper 1, in the end portion 10eLf (10eLb) of the absorbent body 10, the end portion 10eLf (10eLb) is provided by a laminated structure in which at least three or more sheet members are joined, respectively. The strength is extremely high compared to conventional products, and it has a structure that is difficult to stretch for stretching. Therefore, even when the diaper 1 is worn, in the case where the region 10uf is stretched toward the upper side, the region is prevented from being stretched, the absorbent body 10 is less likely to protrude from the undergarment, and the absorbent body 11 is firmly pulled up, thereby achieving Good fit. Further, in the diaper 1, the length L10uf of the region 10uf in the longitudinal direction is 20 mm or more. In the longitudinal direction, the upper end 14eLf of the back sheet 14 (non-skin side film) is closer to the upper side than the upper surface 14eLf of the back sheet 14, and the length of the layer of the sheet member layer of 3 or more layers is 20 mm or more (L10uf ≧ 20 mm). . As shown by the hatched portion in Fig. 7, the region 10uf is attached to the upper end of the absorbent body 10 and sandwiched between the pair of front side joint portions jf, jf, and when the diaper 1 is worn, when the wearer stretches the absorbent In the case of the body 10, it is easy to grasp the area with a finger. Therefore, by forming the region into a three-layer structure, the wearer can easily perform the operation of pulling up the absorbent body 10 by forming a region of a size that is easy to grasp while ensuring sufficient strength. In the upper end of the longitudinal direction of the absorbent body 10, the front end projecting portion 10s is provided. However, in the present embodiment, the length of the portion other than the front end projecting portion 10s of the region 10uf is 20 mm or more (refer to FIG. 7). .

Further, in the longitudinal direction, the distal end protruding portion 10s is longer than the upper end of the front side joint portion jf (the rear side joint portion jb) (that is, the upper end position of the belt portion 32) by a length L10s of 1 mm or more and 5 mm or less (5 mm ≧ L10s). ≧1mm). If L10 is shorter than 1 mm, the front end protruding portion 10s itself becomes difficult to recognize, and it is difficult to recognize the lateral center position of the diaper 1. In addition, when L10 is longer than 5 mm, the front end protruding portion 10s is curled or bent, and the function as a symbol indicating the center position in the lateral direction cannot be exhibited. Further, if L10 becomes long, the front end projection 10s protrudes from the underpants. On the other hand, by forming 5 mm ≧ L10 s ≧ 1 mm, there is no case where it protrudes from the underpants, and the center position in the lateral direction can be easily recognized.

Further, in the longitudinal direction of the region 10uf in the absorbent body 10 The length L10uf is longer than the length L32eW1 in the longitudinal direction of the portion where the upper end portion 32eW1 of the belt portion 32 is folded back (the end end structure described above). Thereby, the force which the region 10uf of the absorbent body 10 is pulled upward is easily transmitted to the upper end portion 32eW1 of the belt portion 32 through the front joint portions jf and jf. That is, the entire region in the longitudinal direction of the upper end portion 32eW1 of the band portion 32 is easily pulled up to the upper side together with the region 10uf of the absorbent body 10. Therefore, by performing the operation of pulling up the upper end portion 10eLf of the absorbent body 10, the position (height) of the entire waist opening portion BH including the belt portion 32 can be adjusted. Thereby, the fit of the diaper 1 is improved, and the waist opening portion BH of the diaper 1 is less likely to protrude from the undergarment.

Further, when the diaper 1 is viewed from the lateral direction, the region 10uf at the upper end in the ventral side of the absorbent body 10 and the region 10ub at the upper end in the absorbent body 10 respectively form pleats protruding in the thickness direction. In the waist opening portion BH, the belt portion 32 acts on the longitudinal direction of the belt portion 32 by the thread rubber 33. On the other hand, the regions 10uf and 10ub at the upper end of the absorbent body 10 do not function. Scalability. In other words, the belt portion 32 having the stretchability is disposed on both lateral sides of the regions 10uf and 10ub, and the joint portions jf and jf are obliquely stretched from both sides, whereby the planar shape of the end portions 10uf and 10ub is easily deformed. Due to this deformation, wrinkles are easily formed. The size of the wrinkles varies depending on the inclination angle of the joint portions jf and jb or the length L10uf (L10ub (not shown)) in the longitudinal direction of the regions 10uf and 10ub, but in the present embodiment, the absorbent body 10 is formed. The maximum value of the height in the thickness direction of the wrinkles of the ventral end portion 10eLf is smaller than the maximum value of the height in the thickness direction of the wrinkles formed at the end portion 10eLf of the ventral side. Thereby, when the diaper 1 is overlapped and worn under the undergarment, the diaper side is suppressed by the influence of the wrinkles, the non-skin side of the underwear in the thickness direction is excessively lifted, or the diaper 1 is confused under the underpants. In the case, it is easy to obtain good fit. Further, the wrinkles are narrowed on the ventral side, whereby the diaper 1 is less likely to be noticeable under the underpants. The embodiment of the present invention is described above, but the above-described embodiments are intended to facilitate the understanding of the present invention and are not intended to limit the present invention. In addition, the present invention may be modified or modified without departing from the gist thereof, and the equivalents thereof are included in the present invention. For example, a deformation as shown below can be performed. In the above-described embodiment, the so-called three-dimensional folded edges for preventing lateral leakage are not provided at positions on both sides in the lateral direction of the absorbent body 10 in the unfolded state of FIG. 3A, but may be provided as appropriate. However, it is preferable that the three-dimensional hemming is not provided as in the above embodiment. The details are as follows. First, in order to provide a three-dimensional hemming, a pair of three-dimensional hemming sheets which are fixed in a state in which the elastic members such as the thread rubber in the longitudinal direction are elongated in the same direction are respectively fixed to the lateral direction of the absorbent body 10. On both sides. Further, in the portion of the same three-dimensional hemming sheet which is closer to the lateral direction than the portion fixed to the absorbent body 10, both end portions in the longitudinal direction are also fixed to the absorbent body 10. Then, the portion on the inner side is not fixed to the central portion in the longitudinal direction of the absorbent body 10, and is erected according to the contraction force of the elastic member, whereby the central portion functions as a three-dimensional hemming. However, since the both end portions to be fixed are convex on the skin side, they are likely to rub against the buttocks of the wearer and the like, and as a result, the wearing feeling is lost. In addition, it is easy to think of a diaper in appearance. Therefore, it is preferable that the three-dimensional folded edges are not provided. In the above-described embodiment, the cross-sectional shape of the front side joint portion jf and its proximal portion is not described. Therefore, it will be described here with reference to FIGS. 9A and 9B. Figure 9A is a cross-sectional view taken along line D-D of Figure 7. Figure 9B is a cross-sectional view taken along line E-E of Figure 7. In other words, Fig. 9A shows a cross section of both longitudinal end portions (near the waist opening portion BH and the leg circumference opening portion LH) of the front side joint portion jf, and Fig. 9B shows a vicinity of the longitudinal middle portion of the front side joint portion jf. section. As shown in FIG. 9A and FIG. 9B, the front side joint portion jf is formed to protrude upward from the front side (non-skin side) in the front-rear direction. Then, since the hydrophobic sheet 50 is present on the non-skin side of the absorbent body 10 of the front side joint portion jf, the angle θ1 at the boundary portion between the absorbent body 10 and the front side joint portion jf becomes an obtuse angle according to the rigidity of the sheet 50. The angle θ2 of the boundary portion between the belt portion 32 and the front side joint portion jf is an acute angle, and the front joint portion jf is in a state of being reversed outward in the lateral direction. Further, a dry edge jde in which the belt portion 32 and the absorbent body 10 are not joined is provided on the outer edge portion of the front side joint portion jf. Then, the width of the dry edge jde (that is, the length of the portion which is closer to the non-skin side than the portion where the belt portion 32 is joined to the absorbent body 10) is the shortest at both ends in the longitudinal direction, and is the center in the longitudinal direction. The ministry is the longest. In the manufacturing process of the diaper 1, the dry edge jde is separated by the edge of the front side joint portion jf when the absorbent body 10 and the belt portion 32 which are overlapped in the thickness direction are cut along the front side joint portion jf. The position of the distance is cut off. At this time, in order to prevent the front side joint portion jf itself from being cut, the dry side jde is generally formed as large as possible by cutting the edge of the front side joint portion jf to a certain extent. However, the diaper 1 of the present embodiment is imaginarily overlapped and worn under the undergarment, so that the side jde is too large and it is easy to interfere with the underpants. In particular, in the vicinity of the waist opening portion BH or the leg opening portion LH, a plurality of sides jde are formed to be large, and the undergarment is fastened during wearing, which may cause a feeling of discomfort in the waist circumference or the leg circumference. Therefore, in the diaper 1, the width of the dry side jde in the both end portions in the longitudinal direction of the front side joint portion jf is shorter than the width of the dry side jde in the center portion in the longitudinal direction of the front side joint portion jf. The way to form the dry side jde. Therefore, when the diaper 1 is worn, it is possible to prevent the wearer from feeling a sense of discomfort in the waist circumference or the leg circumference. Among them, the same applies to the rear side joint portion jb.

[0094]

1‧‧‧Abandoned diapers (absorbent articles)

10‧‧‧Absorbable ontology

10eLb‧‧‧ end

10eLf‧‧‧ end

10eW‧‧‧ end

10uf‧‧‧ area

10ub‧‧‧Area

10mf‧‧‧ area

10s‧‧‧ front end projection

11‧‧‧Acceptor

11eW‧‧‧ end

11eLf‧‧‧ upper end

12‧‧‧Top sheet (non-woven on the skin side)

14‧‧‧Back sheet (non-skin side film)

14eLf‧‧‧Upper

14eLb‧‧‧Upper

16‧‧‧Outer sheet (outerwear)

17‧‧‧Ditch Department

171‧‧‧1st ditch

172‧‧‧2nd ditch

173‧‧‧3rd ditch

30‧‧‧Sheet members (sheets)

30a‧‧‧Sheet

30eW‧‧‧ end

32‧‧‧Belt

32eLb‧‧‧ end

32eLf‧‧‧ end

32eW1‧‧‧ end

32eou‧‧‧With upper end

32eod‧‧‧ with lower end

33‧‧‧Threaded rubber

37‧‧‧Folded leg

37eLb‧‧‧ end

37eLf‧‧‧ end

38‧‧‧Threaded rubber

50‧‧‧hydrophobic flakes

BH‧‧‧ Waist opening

LH‧‧‧ leg opening

FL‧‧‧return line

Jb‧‧‧back joint (joint)

Jf‧‧‧ front joint (joint)

Jde‧‧‧dry side

CLL10‧‧‧ approximate central location

1 is a schematic perspective view of a diaper 1. Fig. 2A is a schematic plan view of the diaper 1 in a state in which the flat plate is viewed from the side of the belt portion 32, and Fig. 2B is a cross-sectional view taken along line B-B in Fig. 2A. 3A, in the diaper 1 in the state of the extended flat plate of FIG. 2A, the respective joints of the front side joint portions jf and jf and the rear side joint portions jb and jb are unwound, and the respective belt portions 32 and 32 are opened to the laterally outer side. FIG. 3B is a cross-sectional view taken along line BB of FIG. 3A. Fig. 4 is a schematic cross-sectional view showing the structure of a C-C cross section of Fig. 3A. Fig. 5 is a schematic view showing a state in which the wearer wears the diaper 1 from the front side (ventral side) and the underwear is worn thereon. Fig. 6 is a schematic plan view showing a diaper 1 of a pants-type shape viewed from the front side (ventral side) in a natural state. Fig. 7 is a schematic plan view showing a state in which the pants-type diaper 1 is elongated in the longitudinal direction and the lateral direction. Fig. 8 is a graph showing the results of tests conducted on the tensile strength of the diaper. Figure 9A is a cross-sectional view taken along line D-D of Figure 7. Figure 9B is a cross-sectional view taken along line E-E of Figure 7.

Claims (13)

A pants-type diaper having a waist-length opening and a pair of leg-opening portions, which are formed in a longitudinal direction and a lateral direction, and has a waist-shaped opening portion and a pair of leg-opening portions, and is characterized by: an absorbent body provided with: an absorbent draining liquid The absorbent body, the liquid-permeable non-woven fabric disposed on the skin side closer to the skin side than the absorbent body, and the liquid-impermeable non-skin side film disposed closer to the non-skin side than the absorbent body, and disposed above The non-skin side film is closer to the non-woven fabric on the non-skin side; and the belt portion is disposed on each of the lateral sides, and connects the end portions of the absorbent body in the longitudinal direction, and the belt portion is Two pairs of joint portions which are inclined toward the lower side of the longitudinal direction and the outer side of the lateral direction toward the leg-opening portion are joined to the absorbent body, and one end of the belt portion in the longitudinal direction The minimum value of the distance from the end on the other side is 50 mm or more and 100 mm or less. In the foregoing longitudinal direction, the aforementioned absorptive body The region closer to the upper side than the upper end of the non-skin side film is at least three layers including the layer of the skin side non-woven fabric and the layer of the outer nonwoven fabric, and the joint portion is provided to be erected on the non-skin side. The edge portion on the non-skin side has a dry edge in which the absorbent body and the belt portion are not joined, and the width of the dry side in the both end portions in the longitudinal direction of the joint portion is larger than the width of the joint portion The width of the dry side in the central portion in the longitudinal direction is shorter, and the width of the dry side in the central portion in the longitudinal direction of the joint portion is shorter than the width of the joint portion. The pants-type diaper of the first aspect of the invention, which has a liquid-impermeable hydrophobic sheet disposed on the skin side of the skin-side non-woven fabric. The pants diaper according to the first or second aspect of the invention, wherein the region of the absorbent body that is closer to the upper side than the upper end of the non-skin side film is stretched toward the upper side in the longitudinal direction by a force of 50 N. The amount of stretching is 1.0 mm or less. The pants diaper according to the first or second aspect of the invention, wherein a length of the longitudinal direction of the region of the absorbent body that is closer to the upper side than the upper end of the non-skin side film is 20 mm or more. The pants type diaper according to claim 4, wherein the belt portion has an end portion end structure in which the upper end portion is folded back in the longitudinal direction, and the absorbent body is closer to the upper side than the upper end of the non-skin side film. The length in the aforementioned longitudinal direction of the region is longer than the length in the aforementioned longitudinal direction of the portion of the aforementioned belt portion having the aforementioned end end tail configuration. The pants-type diaper according to the first or second aspect of the invention, wherein the height of the pleat formed on the ventral side of the absorbent body in a region in which the longitudinal direction is closer to the upper side than the upper end of the non-skin side film The maximum value is smaller than the maximum value of the height of the wrinkles formed on the back side of the absorbent body in the region in which the longitudinal direction is closer to the upper side than the upper end of the non-skin side film. The pants-type diaper according to claim 1 or 2, wherein in the ventral side and the back side of the absorbent body, the upper end of the longitudinal direction and the center of the lateral direction have an upper side protruding toward the longitudinal direction. Front end projection. The pants diaper according to the seventh aspect of the invention, wherein the front end projecting portion has a length that protrudes from the upper end of the joint portion in the longitudinal direction by 1 mm or more and 5 mm or less. The pants type diaper according to claim 1 or 2, wherein the belt portion has a plurality of elastic members that expand and contract along a longitudinal direction of the belt portion, and the elastic member is a long side of the belt portion. One end of the direction to the other end is continuously arranged. The pants type diaper according to claim 1 or 2, wherein, in a natural state, the lateral outer end of the belt portion and the longitudinal upper end are located closer to the upper end of the absorbent body. The upper side of the aforementioned longitudinal direction. The pants type diaper according to claim 10, wherein, in a natural state, the lateral outer end of the belt portion and the longitudinal lower end are at a position other than the lateral outer end of the belt portion and the longitudinal direction The position of the upper side end is closer to the outer side of the aforementioned lateral direction. A pants-type diaper having a waist-shaped opening portion and a pair of leg-opening portions, and a pants-type diaper which is worn under the undergarment, and has the following features: In addition, the absorbent body that absorbs the excretory fluid, the skin-side non-woven fabric that is disposed on the skin side closer to the skin than the absorbent body, and the liquid impervious that is disposed closer to the non-skin side than the absorbent body a skin-side film and an outer nonwoven fabric disposed closer to the non-skin side than the non-skin side film; and a belt portion disposed on each of the lateral sides and each end of the absorbent body in the longitudinal direction The belt portion is connected to the absorbent body by two pairs of joint portions which are inclined toward the leg-opening portion toward the lower side of the longitudinal direction and the lateral outer side by the waist opening portion, and are longitudinally joined to the absorbent body. The minimum value of the distance between the end of one side of the belt portion and the end of the other side is 50 mm or more and 100 mm or less. The part is erected on the non-skin side, and the end portion of the non-skin side has a dry side where the absorbent body and the belt portion are not joined, and both end portions of the joint portion in the longitudinal direction The width of the dry side is shorter than the width of the dry side in the central portion of the joint portion in the longitudinal direction, and the width of the dry side in the central portion in the longitudinal direction of the joint portion is greater than The width of the joint portion is shorter, and the belt portion and the crotch portion of the absorbent body are adjusted to a size that is hidden in the position of the undergarment after the underwear is worn. A method for wearing a pants-type diaper having a waist opening and a pair of leg-opening portions in a longitudinal direction and a lateral direction intersecting each other, comprising: an absorbent body provided with: absorbing excretion liquid The absorbent body, the liquid-permeable non-woven fabric disposed on the skin side closer to the skin side than the absorbent body, and the liquid-impermeable non-skin side film disposed closer to the non-skin side than the absorbent body, and disposed above The non-skin side film is closer to the non-woven fabric on the non-skin side; and the belt portion is disposed on each of the lateral sides, and connects the end portions of the absorbent body in the longitudinal direction to the waist opening Two pairs of joint portions that are inclined toward the lower side of the longitudinal direction and the outer side of the lateral direction toward the leg-opening portion are joined to the absorbent body, and one end and the other side of the belt portion in the longitudinal direction The minimum value of the distance between the ends is 50 mm or more and 100 mm or less. In the longitudinal direction, the aforementioned non-muscle body is more than the aforementioned non-muscle body. The region on the upper side of the upper side of the side film has at least three layers including the layer of the skin side non-woven fabric and the layer of the outer nonwoven fabric, and the joint portion is provided to be erected on the non-skin side, and on the non-skin side The edge portion has a dry edge in which the absorbent body and the belt portion are not joined, and the width of the dry side in the both end portions in the longitudinal direction of the joint portion is larger than the center in the longitudinal direction of the joint portion. The width of the dry side in the portion is shorter, and the width of the dry side in the central portion in the longitudinal direction of the joint portion is shorter than the width of the joint portion, and the wearing method of the pants type diaper has : arranging the pants-type diaper on the skin side of the underpants; after the pants-type diaper and the leg-opening portion of the panty are passed through the wearer's foot, the belt portion is obliquely upward together with the side portion of the panty Pulling up; and in the ventral side and the back side, together with the aforementioned longitudinal upper end portion of the aforementioned undergarment, the aforementioned longitudinal direction of the aforementioned absorbent body Pull up on the end portion side.