TW202312958A - Pants-type absorbent article - Google Patents

Abstract

Provided is a pants-type absorbent article (1) for an adult, the pants-type absorbent article (1) comprising: an absorbent body (10); a torso member (20) comprising a front torso part (20f) and a back torso part (20b) which are disposed over the absorbent body (10) to the front and rear thereof, the torso member (20) being stretchable in the left-right direction; and engagement members (30) that removably engage with a non-skin-side surface of the front torso part (20f). The front torso part (20f) and the back torso part (20f) are jointed to each other. The engagement members (30) are joined to the front torso part (20f). The front torso part (20f) has, in a plan view, highly elastic sections (20NA) at least in a part of an overlap region that overlaps the engagement members (30) between opposite end edges (20fe, 20fe) of the front torso part (20f) in the left-right direction, the highly elastic sections (20NA) having a larger elastic modulus than therearound.

Description

Pants-type absorbent article

The present invention relates to pants-type absorbent articles.

There are known pants-type absorbent articles that can also be used in an adhesive tape type (expanded type) by cutting a part of the waist member of the pants-type absorbent article. For example, Patent Document 1 discloses a pair of disposable diapers that can be selectively joined. Disposable diapers of either the shorts type with the side part or the open type with the fastening sheet joined to the opposite side part.

Also known are underpants-type absorbent articles that can be used in an adhesive tape type (expanded type) by cutting off a part of the waist member of the underpants-type absorbent article. For example, Patent Document 2 discloses a pair of tear-inducing lines provided on the ventral side of the outer body, and a pants-type paper diaper that can be opened to the left and right by cutting the outer body along the tear-inducing lines. . This shorts-type paper diaper can also be a dual-purpose disposable type paper diaper that uses a buckle that is pulled out after opening as an adhesive tape-type paper diaper. [Prior Art Literature] patent documents

Patent Document 1: Japanese Patent Application Laid-Open No. 05-317356 Patent Document 2: Japanese Patent Laid-Open No. 2010-131197

The problem to be solved by the invention

The problems to be solved by the present invention are at least one of the following first to third problems. The first subject is as follows. In the paper diaper described in Patent Document 1, a cutting line for cutting the front body from the back body is provided at a position close to the front body at the junction where the front body and the back body are joined at opposite sides, along the After the cutting line is cut off, the front body and the back body can be connected by fastening pieces protruding from opposite sides of the back body. However, the disposable diaper of Patent Document 1 is not assumed to be a disposable diaper that the wearer himself wears, but is a specification that assumes that the wearer wears it. Therefore, assuming that the wearer who uses such a paper diaper is sitting in the toilet or standing (in a bent posture), when he wants to cut the waist member constituting the front body along the cutting line, When separating, it is considered that it is difficult to apply force to the cutting line, it is difficult to stretch and cut the waist member, and there are concerns that the wearer will repeatedly change hands and try to tear it. In addition, a more than necessary force may be applied at the time of cutting, and a part of the disposable diaper may be damaged. In this way, there is room for improvement in ease of wearing when the wearer himself wears the underpants-type absorbent article which can also be used as an adhesive tape type.

The present invention was made in view of the above-mentioned problems, and an object of the present invention is to provide a shorts-type absorbent article that can be used as an adhesive tape type and that is excellent in wearability for the wearer.

The second subject is as follows. When wearing underpants-type sanitary napkins for sanitary napkins and light incontinence diapers, which can also be used as the above-mentioned adhesive tape type, or for people who need light caregiving The user himself puts on and takes off the underpants-type absorbent article. At this time, what the wearer thinks is to wrap the waist member cut off by the tear induction line around one thigh, pull the cut part of the waist member to the front side of the thigh, and snap it on the thigh. How to wear the buckle (fastening member). This allows for a stable snap-on buckle However, in the disposable diaper of Patent Document 2, tear inducing lines are formed on the inner side of both side edges in the width direction of the lower belt member (absorbent main body) provided with the absorbent core. Therefore, although the wearer holds the lower belt member when fastening the buckle, the lower belt member is not easy to hold because it extends to the rear side in the lengthwise direction (vertical direction) of the diaper. Also, when engaging the buckle, the wearer has to pull the portion of the lower belt member to the front of the thigh, which makes wearing it difficult. Alternatively, the buckle must be snapped to the unstable lower belt member portion between the thighs. In this way, there is room for improvement regarding ease of wearing when the wearer himself wears the underpants type absorbent article which can also be used as an adhesive tape type.

The present invention was made in view of the above-mentioned problems, and an object of the present invention is to provide a shorts-type absorbent article that can be used as an adhesive tape type and that is excellent in wearability for the wearer.

The third subject is as follows. Patent Document 2 describes that the wearer puts on and takes off the above-mentioned shorts-type absorbent article that can also be used as an adhesive tape type in the state of a shorts-type form, and it can be used as a complex for the elderly and the like to wear underwear by themselves. Healthy users. On the other hand, it is described that the caregiver can easily change the paper diaper by making the underpants-type absorbent article an adhesive tape type. However, the wearer himself can wear the underpants-type absorbent article which can also be used as an adhesive tape type as an adhesive tape type. At this time, what the wearer thinks is to wrap the waist member cut off by the tear induction line around one thigh, pull the cut part of the waist member to the front side of the thigh, and snap it on the thigh. How to wear the buckle (engagement member). This will stabilize the snap-on buckle. However, when the wearer is sitting on the toilet or standing bent over in the vicinity of the toilet, when the shorts-type absorbent article is wrapped around one thigh, there is a tendency for the wearer to hang down from the thigh. There is a concern that the portion of the pants-type absorbent article comes into contact with the toilet. In this way, the hygienic state of the underpants-type absorbent article deteriorates.

The present invention is made in view of the above-mentioned problems, and its purpose is to provide an underpants-type absorber that can also be used as an adhesive tape type, and can be used in a hygienic state even when the wearer wears it himself. sex items. [means used to solve problems]

The main invention for achieving the above-mentioned first problem is a shorts-type absorbent article having vertical, lateral, and longitudinal directions intersecting each other, and comprising: an absorbent main body; a waist member stretchable in the lateral direction, It is equipped with a front waist portion and a rear waist portion arranged to overlap with the aforementioned absorbent main body in the front-rear direction; A shorts-type absorbent article for adults formed by joining the rear waist portion, wherein the engaging member is joined to the front waist portion between the left and right side edges of the front waist portion In a plan view, the front waistline portion has a high elastic portion having a larger elastic modulus than the surrounding area in at least a part of the overlapping region overlapping with the engaging member.

The main invention for achieving the above-mentioned second problem is a shorts-type absorbent article, which has vertical, lateral, and front-to-back directions intersecting each other, and has: an absorbent body; There are a front waist portion and a rear waist portion disposed overlapping with the absorbent main body in the front-rear direction; and an engaging member detachably engaged with the front waist portion, and the front waist portion is joined by a pair of engaging portions. portion and the rear waist portion, wherein the engagement portion of the engagement member on one side in the left-right direction is joined to the waist member, and the position in the left-right direction is the same as that in the left-right direction. The minimum length in the vertical direction of the portion of the front waistline where the engaging member overlaps is not less than 80 mm and not more than 150 mm, and the length in the vertical direction of the joint portion on the one side of the left-right direction is not less than 100 mm and not more than 160 mm.

The main invention for achieving the above-mentioned third problem is a shorts-type absorbent article, which has longitudinal and width directions and front and rear directions intersecting each other, and has: an absorbent main body with an absorbent core; a waist member with a There are a front waist portion and a rear waist portion arranged to overlap with the aforementioned absorbent main body in the front-rear direction; and an engaging member is shorts for adults provided with an engaging portion that is detachably engaged with the aforementioned front waist portion A type absorbent article characterized by connecting the center of the width direction of the end of the one side of the longitudinal direction of the engaging portion to the center of the center of the width direction of the end of the other end of the engaging portion of the longitudinal direction. When the said underpants-type absorbent article is held so that a line may be horizontal, the lowermost end of the said absorptive core shall be located above the lowermost end of the said underpants-type absorbent article. Other characteristics of the present invention will be apparent from the descriptions in this specification and the attached pages. [Effect of the invention]

The effect of this invention with respect to the 1st subject is that it can also be used as an adhesive tape type, and the underpants type absorbent article which a wearer thinks is good in wearability can be provided.

The effect of this invention with respect to the 2nd subject is that it can also be used as an adhesive tape type, and the underpants type absorbent article which a wearer thinks is good in wearability can be provided.

The effect of the present invention for the third subject is to provide a pants-type absorbent article that can be used as an adhesive tape type and can be used in a hygienic state even when worn by the wearer himself.

From the description of this specification and the attached pages, at least the following matters are clear. A shorts-type absorbent article having crossing vertical directions, left-right directions, and front-rear directions, and having: an absorbent main body; a waist member stretchable in the left-right direction, having a The front waist portion and the rear waist portion arranged overlappingly; and the engaging member for detachably engaging the non-skin side of the front waist portion, and an adult formed by joining the front waist portion and the rear waist portion The shorts-type absorbent article for use is characterized in that the engaging member is joined to the front waist part, between the left and right side edges of the front waist part, and the front waist part is viewed from a plan view, and At least a part of the overlapping region where the engaging members overlap has a high elastic portion having a larger elastic coefficient than the surrounding area.

According to such a shorts-type absorbent article, before wearing, hold the engaging member with one hand and unfold it toward the outside in the left-right direction, and hold the portion of the front waist portion corresponding to the overlapped engaging member before deployment with the other hand. In the state of the overlapped area, when a force is applied to separate each other and pull outward in the left and right direction, the high elastic part is not easy to stretch, so the front waist part is easily torn at the high elastic part.

In such a pants-type absorbent article, in at least a part of the area where the front waist portion and the engaging member overlap in the left-right direction, an upper area including the upper edge in the vertical direction or an area including the lower edge It is desirable that the lower side region has the aforementioned highly elastic portion.

According to such a pants-type absorbent article, the upper side edge or the lower side edge of the front waistline part becomes the site where tearing starts when the operation of tearing the front waistline part is performed. Because the high elastic part is not easy to elongate and is easy to tear, so the upper side region including the upper side edge or the lower side region including the lower side edge has such a high elastic part, so that the starting point of tearing is easy to tear, wear The user can perform the tearing action smoothly.

Such a pants-type absorbent article, wherein, in a natural state, the minimum value of the length of the front waist portion in the vertical direction in the area where the front waist portion and the engaging member overlap in the left-right direction is not less than 80 mm and not more than 150 mm. for expectations.

According to such a pants-type absorbent article, if the vertical length of the front waist part is 150 mm or less, the wearer can easily tear the front waist part. If the vertical length of the front waistline is too short, the area covering the wearer's body may be too small to cause anxiety. However, setting the vertical length to 80 mm or more can suppress such anxiety.

In such a pants-type absorbent article, it is desirable to provide the incision line having a length in the vertical direction in the high elastic portion of the front waist portion.

According to such a pants-type absorbent article, since the highly elastic portion is a portion that is difficult to elongate and is easily torn, the front waist portion can be more easily torn by providing the incision line on such a highly elastic portion.

Such a pants-type absorbent article, wherein the respective side portions in the left-right direction of the front waist portion and the rear waist portion are joined by a pair of joint portions, and in a natural state, the length of the joint portions in the vertical direction is It is desirable that it is longer than the length of the aforementioned incision line.

According to such a pants-type absorbent article, since the length of the incision line is short, when a certain force is applied at the time of tearing, the force per unit length applied to the incision line portion is greater than the force per unit length applied to the joint portion. The force is greater. Thereby, the incision line portion can be easily torn off.

Such a pants-type absorbent article, wherein the engaging member has an engaging portion engaged with the non-skin side of the front waist portion, and the abdominal contact portion of the front waist portion is separated from the rear along the incision line. In the state before the waist portion is separated, it is desirable that the engaging portion is located inside the incision line in the left-right direction.

According to such a pants-type absorbent article, when the incision line is provided on the inner side in the left-right direction than the engaging part, after tearing, the area where the engaging member is attached is reduced, and even when used without tearing, the When the product is pulled up during wearing, it is also easy to tear at the incision line. Since the engaging portion is located on the inner side in the left-right direction than the incision line, a wide size range of the waist can be obtained, and it is also possible to suppress the breakage of the product when pulled up when the product is used without being torn apart.

The underpants-type absorbent article, wherein the engagement member covers at least a part of the incision line in a state before the abdominal contact portion of the front waist portion is separated from the rear waist portion along the incision line. It is desirable that the upper end of the incision line is located above the upper end of the engagement member, or that the lower end of the incision line is located lower than the lower end of the engagement member.

According to such a pants-type absorbent article, by visually recognizing the incision line before opening the engaging member, the user can easily judge at which position the front waist portion must be torn, and operability can be improved.

In such a pants-type absorbent article, it is desirable that the high elastic portion has a length of 10 mm or more from the incision line toward the inner side in the left-right direction in a natural state.

According to such a pants-type absorbent article, after the incision line is torn, the portion of the high elastic portion disposed inside the incision line becomes a gripping site when the engaging member and the front waistline are engaged. If the gripping portion is a highly elastic portion that is less likely to be deformed, it is less likely to be curled, and the wearer can easily grip it. Also, the gripping portion is more than the width of the thumb, and it is easier to grip.

In such a pants-shaped absorbent article, it is desirable that the length from the inner end of the engaging portion to the inner end of the engaging member in the left-right direction be 5 mm or more and 50 mm or less.

According to such a pants-type absorbent article, if the length from the inner end of the engaging part to the inner end of the engaging member is set to be 5 mm or more, it is easy to hold the tongue further inside than the inner end of the engaging part with fingertips. 30 Peel from the front waistline. On the other hand, if the length is set to 50 mm or less, the distance from the position where the engaging member is grasped to the incision line will not be too long, and the decrease in operability when tearing the front waistline along the incision line can be prevented.

In the underpants-type absorbent article, the underpants-type absorbent article has a pair of the engaging members, and the pair of the engaging members are respectively joined to the front waist portion on both sides in the left-right direction, and the front The waist portion has the high elastic portion in at least a part of each overlapping area on both sides in the left and right direction overlapping with the pair of engaging members in plan view, and the high elastic portion is provided on both sides in the left and right direction of the front waist portion. It is desirable to continuously provide low elastic portions having a smaller elastic coefficient than the high elastic portions between the high elastic portions.

According to such a pants-type absorbent article, by providing the low-elasticity part which can be easily stretched between the high-elasticity parts which are hard to stretch on the left and right, the fit property of the waist part of an absorbent article can be improved.

Such a pants-type absorbent article, wherein the engaging member has an engaging portion engaged with the non-skin side of the front waist portion, and the engaging portion is engaged with the front waist portion when viewed from a plan view. It is desirable that the aforementioned low elasticity portion has a portion overlapping at least a portion of the aforementioned engaging portion.

According to such an underpants-shaped absorbent article, since the engaging portion is easily engaged with the portion of the low elastic portion that is more easily deformed (easily expanded and contracted) than the highly elastic portion that is not easily deformed, when engaging, because the low elastic portion Since the portion overlaps with at least a part of the engaging portion, it is easier for the wearer to engage the engaging portion.

In such an underpants-type absorbent article, it is desirable that the maximum length of the said engagement member in the said left-right direction is 20 mm or more and 120 mm or less.

According to such a pants-type absorbent article, since it has the maximum length in the above-mentioned range, the engaging member is held open by hand, and after the front waist portion is torn, it can be easily engaged with the front waist portion without changing hands. .

Such a pants-type absorbent article, wherein the front waist portion has an incision line having a length in the vertical direction at one end portion in the left-right direction, and the abdominal side of the front waist portion is brought into contact along the incision line. After the portion is separated from the rear waist portion, and the engaging member is engaged with the non-skin side of the front waist portion, the engaging member has a lower edge facing the above-mentioned up-down direction than the lower side edge of the front waist portion. Side protruding tabs are desired.

According to such a pants-type absorbent article, at the portion overlapping with the engaging member, the lower side edge of the front waist portion is hidden by the protruding portion of the engaging member, so that the end (lower side edge) of the front waist portion after tearing is Not easy to see. Thus, the appearance of panties can be more closely approximated.

A shorts-type absorbent article having crossing vertical directions, left-right directions, and front-rear directions, and having: an absorbent main body; a waist member stretchable in the left-right direction, having a The front waistline part and the rear waistline part arranged overlappingly; and the engaging member detachably engaging the aforementioned front waistline part, the adult formed by joining the aforementioned front waistline part and the aforementioned rear waistline part through a pair of joint parts A pants-type absorbent article for use, wherein the engaging portion of the engaging member on one side in the left-right direction is joined to the waist member, and the front waist portion at a position in the left-right direction overlapping the engaging member The minimum length of the above-mentioned vertical direction of the portion is not less than 80 mm and not more than 150 mm, and the length of the above-mentioned vertical direction of the above-mentioned joint part on the aforementioned one side of the aforementioned left-right direction is not less than 100 mm and not more than 160 mm.

According to such an underpants-type absorbent article, when worn in an adhesive tape type, the vertical length of the abdominal contact part is relatively short, and the wearer can easily hold the abdominal contact part. Also, by setting the range of the length in the vertical direction of the junction part slightly longer than that of the abdomen side contact part, when the wearer wraps the waist member around the thigh, it is easy to pull up the entire rear part of the underpants-type absorbent article.

Also, a shorts-type absorbent article has vertical, left-right, and front-rear directions intersecting each other, and has: an absorbent main body; a waist member that expands and contracts in the left-right direction; The front waist part and the rear waist part where the sex body is overlapped are arranged; The underpants-type absorbent article in which the front waist portion and the rear waist portion are joined by a joint portion, wherein the joint portion is located along one side of the left-right direction at the abdomen side abutment portion of the front waist portion. In the state where the inner end is separated from the rear waistline and is in a natural state, the length ratio from the end of the one side of the aforementioned abdominal abutting portion in the left-right direction to the inner end of the joint portion on the other side is from The length from the end on the one side of the rear waist portion in the left-right direction to the inner end of the joining portion on the other side is longer.

According to such a shorts-type absorbent article, when worn in an adhesive tape type, the length in the left-right direction of the abdomen-side contact portion tends to become longer, and when the wearer wraps the waist member around the thigh, the abdomen-side contact portion tends to be easily contacted. Pull the lower part to the front of the thigh. On the other hand, the length in the left-right direction of the rear waist part tends to be shortened, and when the waist member is wrapped around the thighs, the underpants-shaped absorbent article is less likely to hang down, and contact with the toilet can be suppressed.

In such a pants-type absorbent article, the front waist portion has an incision line having a length in the vertical direction at the end portion on the one side in the left-right direction, and the abdomen side of the front waist portion is abutted along the incision line. In the state where the connecting portion is separated from the rear waist portion, and in a natural state, the length ratio from the end of the one side of the aforementioned abdominal side abutting portion in the aforementioned left-right direction to the inner end of the aforementioned joining portion on the other side is from the aforementioned The length from the end on the one side of the rear waistline in the left-right direction to the inner end of the joining portion on the other side is longer.

According to such a shorts-type absorbent article, when worn in an adhesive tape type, the length in the left-right direction of the abdomen-side contact portion tends to become longer, and when the wearer wraps the waist member around the thigh, the abdomen-side contact portion tends to be easily contacted. Pull the lower part to the front of the thigh. On the other hand, the length in the left-right direction of the rear waist part tends to be shortened, and when the waist member is wrapped around the thighs, the underpants-shaped absorbent article is less likely to hang down, and contact with the toilet can be suppressed.

Such a pants-type absorbent article, wherein the absorbent main body includes an absorbent core, the abdominal abutting portion of the front waist portion is separated from the rear waist portion along the incision line, and the engaging member is moved toward the In the state where the one side in the left-right direction is unfolded and in a natural state, the length from the end on the one side of the absorptive core on the front side in the left-right direction to the end on the one side of the abdominal contact portion is 50 mm The above 200 mm or less, the length from the end of the one side of the said absorbent core on the rear side in the said left-right direction to the end of the said one side of the said engaging member is 100 mm or more and 300 mm or less.

According to such a shorts-type absorbent article, when worn in an adhesive tape type, the length in the left-right direction of the abdomen-side contact portion tends to become longer, and when the wearer wraps the waist member around the thigh, the abdomen-side contact portion tends to be easily contacted. Pull the lower part to the front of the thigh. On the other hand, the length of the engaging member extending outward in the left-right direction and the rear waist portion tends to be shortened in the left-right direction, and when the waist member is wrapped around the thigh, the engaging member extending outward in the left-right direction can be prevented from contacting. to the toilet.

In such a pants-shaped absorbent article, in the separated state and in a natural state, the upper end of the abdomen-side contact portion is located on the lower end side and on the one side in the left-right direction.

According to such a shorts-type absorbent article, the inclination of the wearer's hand holding the abdominal abutment part from the waist opening side is consistent with the inclination of the cut-off end of the abdominal abutment part, and the wearer can easily hold the abdominal abutment part. side abutment.

In the underpants-shaped absorbent article, the front waist portion has an incision line having a length in the vertical direction at the end portion on the one side in the left-right direction, and the engaging member has a clip engaged with the front waist portion. The joint part is to separate the abdominal abutting part of the front waist part from the rear waist part along the incision line, and the state where the engaging member is unfolded toward the one side in the left and right direction, and in a natural state, from The portion of the front waist portion from which the abdominal contact portion is separated is located on the inner side in the left-right direction than the engaging portion.

According to such a pants-type absorbent article, since the engaging portion is not covered by the front waist portion remaining on the joining portion side, the engaging member can be engaged with the front waist portion by the engaging portion. In addition, the front waist portion remaining on the joining portion side rubs against the front waist portion, so that the front waist portion is less likely to shift in position with respect to the rear waist portion or the engaging member.

Such a pants-type absorbent article, wherein the front waist portion has an elastic region that expands and contracts in the left-right direction, a low-elasticity region that is less elastic than the elastic region, and an incision line that has a length in the vertical direction. The low elastic region is arranged on the one side in the left-right direction relative to the elastic region, and the incision line is arranged between both ends of the low elastic region in the left-right direction.

According to such an underpants-type absorbent article, the front waistline is easily torn along the incision line. Since the cut-off end of the abdominal abutting portion is less likely to be curled due to the low stretch area, the engaging member can be stably engaged to the front waistline. In addition, since the cut-off end of the abdomen-side abutting portion and the remaining portion of the front waistline portion on the joining portion side are less prone to curling due to the low-elasticity region, the uncomfortable feeling during wearing can be reduced.

In the underpants-type absorbent article in the unfolded and stretched state, the length from the incision line to the end on the other side in the left-right direction of the low-elasticity region is greater than the length from the above-mentioned left-right direction to the other end of the low-elasticity region. The length in the left-right direction from the inner end of the joint portion on one side to the incision line in the left-right direction is longer.

According to such a pants-type absorbent article, since the length in the left-right direction of the end portion (low-elasticity region) of the abdominal contact portion that is not easily curled is long, when the wearer wraps the waist member around the thigh, it is easy to wrap the waist member around the thigh. The belly abutment is pulled to the front of the thigh. In addition, since the end portion (low elastic region) of the abdomen-side abutting portion that is less likely to curl can cover the remaining portion of the front waistline portion on the joining portion side, the uncomfortable feeling during wearing can be reduced.

In this underpants-type absorbent article, the above-mentioned underpants-type absorbent article is provided with the said engagement member on both sides of the said waistline member in the said left-right direction.

According to such an underpants-type absorbent article, when worn in an adhesive tape type, since the waist member can be wrapped around both thighs of the wearer, it can be easily put on and taken off without taking off pants, shoes, and the like.

In such a pants-type absorbent article, one engagement member is provided on both sides of the waist member in the left-right direction, and the engagement member has one engagement portion engaged with the front waist portion.

According to such a pants-type absorbent article, the operation|movement of engaging an engaging member with a front waist part becomes easy.

In the underpants-type absorbent article, wherein the engaging member has an engaging portion engaged with the front waist portion, the absorbent main body has an absorbent core, and in the underpants-type absorbent article in an unfolded and stretched state, from The length of the said vertical direction from the upper end of the said front waistline part to the upper end of the front side of the said absorptive core is longer than the length of the said vertical direction of the said engaging part.

According to such an underpants-type absorbent article, when the engaging member is engaged with the front waistline part, the engaging part and the absorbent core are likely to be at a position deviated in the vertical direction. Therefore, the engaging portion can be engaged in a region where the stretchability of the waist member is not lowered by the absorbent core, and the engaging strength of the engaging member can be improved.

The underpants-type absorbent article, wherein the length in the vertical direction from the upper end of the rear waistline portion to the upper end on the rear side of the absorbent core in the unfolded and stretched state of the underpants-type absorbent article is greater than the length of the engagement The length of the above-mentioned up-down direction of the part is shorter.

According to such a pants-type absorbent article, since the rigidity of the upper end of the rear waist portion is increased by the absorbent core, when the waist member is wrapped around the thigh, the rear waist portion is less likely to hang down and contact with the toilet can be suppressed.

Such a pants-type absorbent article, wherein the engaging member has an engaging portion engaged with the non-skin side of the front waist portion, and the color of the non-skin side of the front waist portion and the non-skin portion of the engaging member are The color of the side surface is the same color system, and the engaging member has a plurality of pressing portions that press the engaging member in the thickness direction in a region where the engaging portion is arranged.

According to such an underpants-type absorbent article, an appearance improves. Also, the position of the engaging portion can be easily recognized from the non-skin surface side (outer side) of the engaging member, and it is easy to engage the engaging member with the front waistline.

In such a pants-shaped absorbent article, at least one of the upper end and the lower end of the engaging member has an inclined portion that inclines toward the center of the engaging member in the vertical direction as it goes inward in the left-right direction.

According to such a pants-type absorbent article, the free end portion of the engaging member has a tapered shape, so that the wearer can easily hold the engaging member. In addition, the engaging member is less likely to come into contact with the wearer when breathing, raising the foot, etc., and the feeling of discomfort during wearing can be reduced.

In the underpants-type absorbent article, the length from one end of the underpants-type absorbent article in the vertical direction to the center in the unfolded and stretched state is 200 mm to 350 mm.

According to such a pants-type absorbent article, since the length in the vertical direction is short, when the waist member is wrapped around the thigh, the pants-type absorbent article is less likely to hang down, and contact with the toilet can be suppressed.

Such a pants-type absorbent article, wherein the engaging member has an engaging portion engaged with the front waist portion, and the engaging member is positioned at the inner end of the joining portion on the one side in the left-right direction. The length in the up and down direction of the front waistline is longer than the length in the up and down direction of the front waistline, and the minimum length in the updown direction of the portion of the front waistline where the position in the left and right directions overlaps with the engaging portion is longer than that of the engaging portion. The aforementioned maximum length in the up-down direction is longer.

According to such a shorts-type absorbent article, when worn in an adhesive tape type, the vertical length of the front waist part is short, and the wearer can easily hold the front waist part. On the other hand, since the vertical length of the engaging member is long, when the wearer wraps the waist member around the thigh, it is easy to pull up the entire rear portion of the underpants-type absorbent article from the rear side of the thigh. In addition, the entire area in the vertical direction of the engaging portion can be engaged with the front waistline portion.

In such a pants-type absorbent article, the waist member continuously has an elastic region that expands and contracts in the left-right direction at least in a region overlapping the absorbent main body at positions in the left-right direction.

According to such an underpants-type absorbent article, when the wearer wraps the waist member around the thigh, it is easy to pull the front waist portion to the front side of the thigh. When the waist member is wrapped around the thigh, the rear waist part is less likely to hang down, and contact with the toilet can be suppressed.

In the underpants-type absorbent article in which the underpants-type absorbent article is unfolded and stretched, the maximum length of the engaging member in the left-right direction is not less than 20 mm and not more than 120 mm.

According to such a pants-type absorbent article, since the length of the engaging member in the left-right direction is not too short, the wearer can easily hold the engaging member. Since the length of the engaging member in the left-right direction is not too long, even if the engaging member is unfolded outward, it is difficult to touch the toilet.

In the underpants-type absorbent article, the absorbent main body has an absorbent core, the engaging member has an engaging portion engaged with the front waist portion, and the engaging portion is located closer to the left and right than the absorbent core. The aforementioned side of the direction.

According to such a pants-type absorbent article, since the engaging portion does not overlap with the absorbent core in the thickness direction, it is easy to engage the engaging portion in a region where the stretchability of the front waist portion does not decrease, so the engaging strength of the engaging member is improved. .

A shorts-type absorbent article having longitudinal, width, and front-rear directions intersecting each other, and comprising: an absorbent body having an absorbent core; and a waist member having a body overlapping the absorbent body in the front-back direction The disposed front waist portion and rear waist portion; and the engaging member are shorts-type absorbent articles for adults having an engaging portion detachably engaged with the front waist portion, and are characterized in that: The pants-type absorbency is maintained in such a manner that the center line of the widthwise center of the one end of the engaging portion in the longitudinal direction is horizontal to the centerline of the widthwise center of the end of the engaging portion on the other longitudinal side. In the case of an article, the lowermost end of the absorbent core is located above the lowermost end of the pants-type absorbent article.

According to such a pants-type absorbent article, when the wearer makes the pants-type absorbent article into an adhesive tape type and wraps the waist member around the thigh, compared with the case where the lowermost end of the absorbent core becomes the lowermost end of the product, the absorbency is lower. The core does not hang down easily, and it is possible to prevent the underpants-type absorbent article from coming into contact with the toilet. Therefore, the hygienic state of the underpants-type absorbent article can be maintained well.

Also, a shorts-type absorbent article has longitudinal, width, and front-rear directions intersecting each other, and has: an absorbent main body provided with an absorbent core; The front waist part and the rear waist part arranged on the main body are overlapped; and the engaging member is provided with an engaging part detachably engaged with the front waist part, and is formed by folding in half toward the front-rear direction by the half-fold part The shorts-type absorbent article for adults according to the present invention is characterized in that the center of the width direction connecting the end of the engaging portion on one side of the longitudinal direction and the end of the engaging portion on the other side of the longitudinal direction are separated by the width. When the pants-type absorbent article is held so that the center line of the center in the direction is horizontal, the point where the upper side end of the two side ends in the width direction of the front absorbent core and the double folded portion intersect The length in the vertical direction from the horizontal line to the lowermost end of the pants-shaped absorbent article is shorter than the length in the vertical direction from the horizontal line to the uppermost end of the pants-shaped absorbent article.

According to such an underpants-type absorbent article, when the wearer makes the underpants-type absorbent article into an adhesive tape type and wraps the waist member around the thigh, the length of the underpants-type absorbent article hanging down from the thigh (horizontal line) becomes shorter. , can prevent the underpants-type absorbent article from coming into contact with the toilet.

A shorts-type absorbent article having longitudinal, width, and front-rear directions intersecting each other, and comprising: an absorbent body having an absorbent core; and a waist member having a body overlapping the absorbent body in the front-back direction The disposed front waist portion and rear waist portion; and the engaging member are shorts-type absorbent articles for adults having an engaging portion detachably engaged with the front waist portion, and are characterized in that: The absorbent body has: a first center where one end of the longitudinal side is located at the center of the width direction; and a second center where a central line that divides the front side of the absorbent body in half in the longitudinal direction is located at the center of the width direction; And the third center of the end on the other side of the aforementioned longitudinal direction located in the center of the aforementioned width direction, so as to connect the center of the aforementioned width direction of the end of one side of the aforementioned longitudinal direction of the aforementioned engaging portion and the aforementioned longitudinal direction of the aforementioned engaging portion. When the pants-type absorbent article is held so that the centerline of the center in the width direction of the other end is horizontal, the inclination relative to the horizontal direction of the line connecting the first center and the second center and relative to The inclination of the said horizontal direction of the line connecting the said 2nd center and the said 3rd center is the same.

According to such a pants-type absorbent article, the portion on the crotch side of the absorbent main body in the longitudinal direction is less likely to bend than the portion on the waistline side. Therefore, when the wearer makes the underpants-type absorbent article an adhesive tape and wraps the waist member around the thigh, the absorbent main body (absorbent core) is less likely to hang down, and the absorbent main body can be prevented from coming into contact with the toilet.

The underpants-type absorbent article, wherein, when the underpants-type absorbent article is held so that the center line is horizontal when seen from the front side, one of the pair of side ends of the absorbent main body in the width direction is The skin side of the absorptive main body on the rear side can be seen from the lower side than the lower side end.

According to such an underpants-type absorbent article, the wearer makes the underpants-type absorbent article an adhesive tape type, wraps the waist member around the thighs, and then easily pulls the absorbent main body between the thighs.

The underpants-type absorbent article, wherein, when the underpants-type absorbent article held so that the center line is horizontally viewed from the front side, one of the pair of side ends of the absorbent main body in the width direction is The skin side of the absorptive main body on the rear side can be seen from the upper side than the upper side end.

According to such an underpants-type absorbent article, the absorbent main body which is easy to touch the rear side of the toilet can be positioned on the upper side, and the underpants-type absorbent article can be prevented from coming into contact with the toilet.

In the underpants-shaped absorbent article, in which another engaging member is provided at a position opposite to the engaging member in the width direction, when the underpants-shaped absorbent article is held so that the center line is horizontal, The engaging part of the engaging member provided by the said other said is located on the upper side rather than the lowermost end of the said underpants type absorbent article.

According to such an underpants-type absorbent article, the wearer makes the underpants-type absorbent article into an adhesive tape type, wraps the waist member around the thigh, and since the engaging member (other engaging member) on the opposite side can be easily seen, Therefore, the wearer can easily switch to the next operation of tearing the front waistline by opening the engaging member on the opposite side.

In the underpants-shaped absorbent article, in which another engaging member is provided at a position opposite to the engaging member in the width direction, when the underpants-shaped absorbent article is held so that the center line is horizontal, At least a part of the engaging portion included in the other engaging member is located on the waist side with respect to a vertical line passing through an end of the engaging portion included in the engaging member on the waist side in the longitudinal direction.

According to such an underpants-type absorbent article, the wearer makes the underpants-type absorbent article into an adhesive tape type, wraps the waist member around the thigh, and the engaging member (other engaging member) on the opposite side is positioned on the wearer's side. near. Therefore, it is easy to visually recognize the engaging member on the opposite side, and the wearer can easily grasp the engaging member on the opposite side from under the thigh.

Also, a shorts-type absorbent article has longitudinal, width, and front-rear directions intersecting each other, and has: an absorbent main body provided with an absorbent core; The front waist portion and the rear waist portion arranged so that the main body overlaps; and the engaging member is a shorts-type absorbent article for adults having an engaging portion that detachably engages the front waist portion, and is characterized by: The volume of the portion of the underpants-type absorbent article in which the absorbent core is arranged is not less than 100 cm ³ and not more than 250 cm ³ .

According to such an underpants-type absorbent article, the mass and size of the absorbent core can be reduced, and when the wearer makes the underpants-type absorbent article into an adhesive tape type and wraps the waist member around the thigh, the absorbent core is not easy to hang down, and the wear can be suppressed. The pant-type absorbent article contacts the toilet.

Such an underpants-type absorbent article in which the width of the absorptive core is 50 mm or more and less than 100 mm.

According to such a pants-type absorbent article, the volume of the absorbent core can be reduced while suppressing the leakage of excretion, and when the wearer makes the pants-type absorbent article into an adhesive tape type and wraps the waist member around the thigh, the The pant-type absorbent article contacts the toilet.

Such an underpants-type absorbent article, wherein the underpants-type absorbent article has a thickness of less than 5.5 mm at a portion where the absorbent core is disposed in the unfolded and stretched underpants-type absorbent article.

According to such an underpants-type absorbent article, the volume of the absorbent core can be reduced, and when the wearer makes the underpants-type absorbent article into an adhesive tape type and wraps the waist member around the thigh, it is possible to prevent the underpants-type absorbent article from coming into contact with the toilet. .

Such a pants-type absorbent article in which the mass of the absorptive core is not less than 10 g and not more than 40 g.

According to such a pants-type absorbent article, the volume of the absorbent core can be reduced while suppressing the leakage of excretion, and when the wearer makes the pants-type absorbent article into an adhesive tape type and wraps the waist member around the thigh, the The pant-type absorbent article contacts the toilet.

Such a pants-type absorbent article, wherein the engaging portion included in the engaging member is provided at a position outside the width direction of the front side of the absorbent main body, and is different from that of the front side of the absorbent body. At least one of the cases where the sex body is further provided at a position on the waist side in the longitudinal direction.

According to such an underpants-type absorbent article, damage to the absorbent main body can be prevented when the engaging member is detached. In addition, the engaging portion can be engaged with the portion of the front waist portion where stretchability is not reduced by the absorbent main body, and the engaging strength can be increased.

Such a pants-type absorbent article, wherein one engaging member having one engaging portion is provided on one side of the waist member in the width direction, and one engagement member is provided on the other side of the waist member in the width direction. One other engaging member having one engaging portion is provided.

According to such an underpants-type absorbent article, the engaging member can be engaged with the front waistline.

In the pants-type absorbent article, wherein the front waist portion has a cut line having a length in the longitudinal direction, the front waist portion is separated from the front waist portion in a state where the front waist portion is not torn along the cut line in the longitudinal direction. The engaging member can be seen on the non-skin side of the body.

According to such an underpants-type absorbent article, the engaging member can be easily recognized by the wearer, and the underpants-type absorbent article can also be easily used as an adhesive tape type.

In such a pants-type absorbent article, the front waist portion continuously has an elastic region that expands and contracts in the width direction at least in a region that overlaps with the absorbent main body at a position in the width direction.

According to such a shorts-type absorbent article, the front waist portion fits the wearer, and the wearer makes the shorts-type absorbent article into an adhesive tape type, and when the waist member is wrapped around the thigh, the front side of the shorts can be restrained. sagging of absorbent articles.

Such a pants-type absorbent article, wherein the respective side portions in the width direction of the front waist portion and the rear waist portion are joined by a pair of joining portions, and the pair of the rear waist portion in the width direction is The region between the joining parts has a continuous stretchable region that stretches and shrinks in the width direction.

According to such a pants-type absorbent article, both the rear waist part and the wearer can be fitted, and when the wearer makes the pants-type absorbent article into an adhesive tape type and wraps the waist member around the thigh, the back waist part can be suppressed. The sagging of the pant-type absorbent article.

The underpants-type absorbent article in which the length from one end to the center of the underpants-type absorbent article in the longitudinal direction is not less than 200 mm and not more than 350 mm in the unfolded and stretched state of the underpants-type absorbent article.

According to such a shorts-type absorbent article, it is made to correspond to the size of the adult wearer's body, and when the wearer makes the shorts-type absorbent article into an adhesive tape type and wraps the waist member around the thigh, the wear of the shorts can be suppressed. sagging of absorbent articles.

Such a pants-type absorbent article, wherein the absorbent main body has an absorbent body elastic member that expands and contracts along the longitudinal direction of the absorbent main body.

According to such a pants-type absorbent article, when the absorbent main body is fitted to the wearer's crotch, and when the wearer makes the pants-type absorbent article into an adhesive tape type and wraps the waist member around the thigh, The absorbent body is inhibited from contacting the toilet.

Such a pants-type absorbent article, wherein the pants-type absorbent article has a protruding member protruding from at least one of the front waist portion and the rear waist portion toward the crotch side in the longitudinal direction, and the protruding member has a The above-mentioned expansion and contraction area expands and contracts in the width direction.

According to such an underpants-type absorbent article, when the wearer makes the underpants-type absorbent article into an adhesive tape type and wraps the waist member around the thigh, it is possible to further suppress the protruding member from coming into contact with the toilet.

Such a pants-type absorbent article, wherein the rear waist portion has a non-skin side sheet forming its non-skin side, and the waist side end of the non-skin side sheet in the longitudinal direction is folded toward the skin side, The side covers the aforementioned longitudinal ends of the aforementioned absorbent body.

According to such a pants-type absorbent article, since the rigidity of the waist-side end portion of the rear waistline portion is improved, when the wearer makes the pants-type absorbent article into an adhesive tape type and wraps the waist member around the thigh, the Sagging of the pant-type absorbent article on the rear side.

The underpants-type absorbent article in which the absorbent main body has a region in which the absorbent core does not exist on the lateral side in the width direction.

According to such a pants-type absorbent article, since the rigidity of the side portion of the absorbent main body becomes low, the wearer makes the pants-type absorbent article into an adhesive tape type, wraps the waist member around the thigh, and easily wraps the waist member. Rotate around the thigh.

Such a pants-type absorbent article, wherein at least one of the front waist portion and the rear waist portion has an elastic region that expands and contracts in the width direction, and the absorbent main body has a stretchable area along the width direction of the side portion of the absorbent body. The side elastic member expands and contracts in the longitudinal direction of the main body, and the stress in the width direction in the stretchable region of at least one of the front waist portion and the rear waist portion is longer than that in the region where the side elastic member is arranged. The stress in the direction is greater.

According to such a pants-type absorbent article, both the waist member and the wearer are fitted, and when the wearer makes the pants-type absorbent article into an adhesive tape type and wraps the waist member around the thigh, the pants-type absorption can be suppressed. The drooping of sexual objects. Also, since the side portions of the absorber are less likely to stretch, the wearer can easily rotate the waist member in the circumferential direction of the thigh after wrapping the waist member around the thigh.

===First Embodiment=== Hereinafter, an example of the underpants-type absorbent article of the present invention will be described with respect to the underpants-type (pants-type) sanitary napkin 1 (hereinafter also simply referred to as "the sanitary napkin 1"). In addition, the underpants type absorbent article also includes underpants type paper diapers and the like.

＜Basic structure of sanitary napkin 1＞ FIG. 1 is a schematic perspective view of a sanitary napkin 1 . Fig. 2 is a plan view of the sanitary napkin 1 in an unfolded and stretched state viewed from the skin side in the thickness direction. FIG. 3 is a schematic cross-sectional view along line A-A of FIG. 2 .

The sanitary napkin 1 has "upper and lower directions", "left and right directions" and "front and rear directions" which intersect each other (orthogonal) as shown in Fig. 1 . Moreover, as shown in FIG. 3, it has the thickness direction which is the direction in which each member is laminated|stacked. In the vertical direction, when the wearer is wearing the sanitary napkin 1 , the side that becomes the waistline side of the wearer is defined as the "upper side", and the side that becomes the crotch of the wearer is defined as the "lower side". Also, in the front-rear direction, the side that becomes the ventral side of the wearer at the time of wearing is referred to as the "front side", and the side that becomes the back side of the wearer is referred to as the "rear side". In addition, in the thickness direction, when the wearer wears the sanitary napkin 1, the side in contact with the wearer's skin is referred to as the "skin side", and the opposite side is referred to as the "non-skin side".

The sanitary napkin 1 of this embodiment is provided with: a liquid-absorbent absorbent main body 10 which absorbs excrement such as menstrual blood; The waist portion 20f and the rear waist portion 20b; and a pair of tongue pieces 30 (corresponding to engagement members) provided on both sides in the left-right direction of the waist member 20 .

The unfolded state of the tampon 1 shown in FIG. 2 refers to a state in which the tampon 1 is unfolded flat by separating the pair of side joints 40 provided on both sides in the left-right direction of the tampon 1 . In other words, the sanitary napkin 1 is folded in half at the center position CL in the up-down direction from the unfolded state shown in FIG. The respective side portions in the left and right directions form a shorts type. As the joining method of the side joint part 40, well-known joining methods, such as heat fusion and ultrasonic welding, can be mentioned. In the underpants type sanitary napkin 1 ( FIG. 1 ), the front waist portion 20f and the rear waist portion 20b are connected in a ring shape to form one waist opening 1a and a pair of leg openings 1b.

The "extended state" of the sanitary napkin 1 refers to stretching the entire sanitary napkin 1 (the entire product) ) stretched into a wrinkle-free state. Specifically, it refers to extending the size of each member constituting the sanitary napkin 1 (for example, the non-skin side sheet 21 and skin side sheets 22, 23, etc. described later) to the size of the member itself (that is, the size of the elastic member). The state in which elastic properties do not occur) is the same as or close to the elongated state of this size. In addition, in the present embodiment, when comparing the absorbent main body 10 part, it is in the state of disengaging the tongue piece 30 (the state of peeling it off), and in the state of the underpants type (before the incision line 25 is torn off). state) to measure and compare ideally. The tongue piece 30 can also be measured in either state after the sanitary napkin 1 is unsealed or in a disengaged state. In addition, the above-mentioned measurement method is an example, and it is also possible to perform measurement by another measurement method.

(absorbent body 10) As shown in FIG. 2 , the absorbent main body 10 has a substantially rectangular shape in plan view along the vertical direction of the sanitary napkin 1 in the longitudinal direction. And, as shown in FIG. 3 , the absorbent main body 10 has: an absorbent core 11 along the longitudinal direction (vertical direction), a top sheet 12 arranged on the skin side of the absorbent core 11, and an absorbent core 12 arranged on the side of the skin. The back sheet 13 is on the non-skin side of the absorptive core 11 . However, the absorptive main body 10 may include other sheet members. For example, a second sheet (not shown) may be provided between the top sheet 12 and the thickness direction of the absorptive core 11 .

The absorbent core 11 is a member that absorbs and holds liquid such as menstrual blood, and is formed, for example, of liquid-absorbent fibers such as pulp fibers mixed with superabsorbent polymer (SAP). In addition, the outer peripheral surface of the absorptive core 11 may be covered with a liquid-permeable sheet member (core covering sheet) such as tissue paper or nonwoven fabric.

The top sheet 12 is a liquid-permeable sheet member capable of contacting the wearer's skin when worn, and is formed of, for example, a hydrophilic air-through nonwoven fabric, a spunbonded nonwoven fabric, or the like.

The back sheet 13 is composed of a liquid-impermeable sheet 13a for preventing liquid such as menstrual blood absorbed by the absorbent core 11 from leaking to the outside, and a hydrophobic layer disposed on the non-skin side of the liquid-impermeable sheet 13a. The two-layer structure of the sheet 13b is formed. As the liquid-impermeable sheet 13a, for example, a resin film or the like can be used, and as the water-repellent sheet 13b, for example, a flexible nonwoven fabric or the like can be used. However, the hydrophobic sheet 13b may not necessarily be provided, and the back sheet 13 may be constituted only by the liquid-impermeable sheet 13a.

In addition, leak-proof wall parts (not shown) may be provided on both sides in the left-right direction of the absorptive main body 10 . The leak-proof wall portion corresponds to a so-called three-dimensional hem, and when the sanitary napkin 1 is worn, the leak-proof wall portion rises from both sides of the absorbent body 10 in the left-right direction toward the wearer's skin. , to suppress the leakage of excrement fluid such as menstrual blood to the outside of the absorbent main body 10 .

Moreover, the absorbent body 10 is provided with a plurality of absorber elastic members 50 that expand and contract along the longitudinal direction thereof. The absorber elastic member 50 is made of thread rubber, for example, and is arranged in a state stretched in the longitudinal direction between the liquid-impermeable sheet 13a and the water-repellent sheet 13b in this embodiment (FIG. 3). In the sanitary napkin 1 of this embodiment, five absorber elastic members 50 are provided at predetermined intervals in the left-right direction (see FIG. 2 ). The elongation ratio of the absorbent elastic member 50 is preferably about 1.4 to 3.3 times. In addition, the elongation ratio is represented by the value obtained by dividing the length of the elastic member in the stretched state by the length of the elastic member in the natural state. The elongation ratio of the absorber elastic member 50 may be set to a certain ratio. By setting in this way, as shown in FIG. 8 described later, the absorbent main body 10 is lifted toward the wearer's skin side, and the absorbent main body 10 is easily attached to the crotch (vaginal opening) of the wearer, which can suppress the Leakage of excreta.

(waist member 20) The waist member 20 is an exterior body composed of a plurality of sheet members, and includes at least a non-skin side sheet 21 and skin side sheets 22 and 23 (see FIG. 3 ). In addition, in the following description, in the longitudinal direction of the waist member 20, the part on the front side (abdominal side) than the central position CL is also referred to as the front waist part 20f, and the part on the rear side ( The part on the back side) is called the rear waistline part 20b. The front waist portion 20f is a portion that comes into contact with the abdominal side of the wearer's body when the sanitary napkin 1 is worn. Moreover, the back waistline part 20b is a part which contacts the back side of the wearer's body when the sanitary napkin 1 is worn.

The non-skin side sheet 21 is a non-stretchable sheet member disposed on the most non-skin side of the sanitary napkin 1, and is formed of, for example, a spunbond nonwoven fabric, SMS nonwoven fabric, or the like. The non-skin side sheet 21 of the present embodiment has a shape narrowed inward in the left-right direction at a longitudinal central portion as shown in FIG. 2 .

The skin-side sheet 22 is a stretchable sheet member laminated on the skin side of the non-skin-side sheet 21 on the front side (abdominal side) in the longitudinal direction. The skin-side sheet 22 is formed of, for example, stretchable nonwoven fabric. "Stretchable nonwoven fabric" is a nonwoven fabric that includes stretchable fibers with stretchability and extensible fibers that are less shrinkable than the stretchable fibers, and is subjected to appropriate stretching treatment such as gear calendering. In the skin-side sheet 22 of this embodiment, fibers of a polyurethane-based elastomer, which is a kind of elastic thermoplastic elastomer, can be used as stretchable fibers, and fibers of a polyolefin-based resin, which is a kind of non-elastic thermoplastic resin, can be used. Fibers of propylene (PP) were used as extensible fibers.

The skin-side sheet 22 is joined to the non-skin-side sheet 21 by a plurality of scattered sheet joining portions (not shown), thereby imparting stretchability at least in the left-right direction to the front waist portion 20f. In this embodiment, the sheet joining portion is formed using known joining means such as ultrasonic welding.

The skin-side sheet 23 is a stretchable sheet member laminated on the skin side of the non-skin-side sheet 21 on the rear side (back side) in the longitudinal direction. The skin side sheet 23 has the same structure as the skin side sheet 22 . That is, the skin-side sheet 23 is formed of a stretchable non-woven fabric, and is joined to the non-skin-side sheet 21 by a plurality of scattered sheet joints (not shown). Thereby, at least the stretchability in the left-right direction is given to the rear waistline part 20b.

In addition, other sheet members than the non-skin side sheet 21 and the skin side sheets 22 and 23 may be provided as the sheet member constituting the waist member 20 . For example, the waist member 20 may have a non-stretchable non-woven fabric disposed on the skin-side of the stretchable skin-side sheets 22, 23, and has a three-layer structure in which the stretchable non-woven fabric is sandwiched by the non-stretch non-woven fabric. In the case of a 3-layer structure, the skin side sheets 22, 23 may also be stretchable films. In addition, the non-skin side sheet 21 may be separated on the front side and the back side. At this time, between the non-skin side sheet 21 on the front side and the non-skin side sheet 21 on the rear side, the non-skin side of the back sheet 13 may be exposed, and the non-skin side sheet 21 connecting the front side and the front side non-skin side sheet 21 may also be provided at the crotch portion. The non-skin side sheet of the different body of the non-skin side sheet 21 on the rear side.

(Tongue 30) The sanitary napkin 1 has a pair of tongue pieces 30 (engagement members) detachably engaged with the non-skin side of the front waist portion 20 f on both sides in the left-right direction of the waist member 20 . In addition, FIG. 2 is the sanitary napkin 1 seen from the skin side, and virtually shows the tongue piece 30 engaged with the non-skin side of the front waistline part 20f. The tongue 30 has a base sheet 31 and an engaging portion 32 . The base sheet 31 is a sheet member formed of nonwoven fabric or the like. The outer end in the left-right direction of the base sheet 31 is joined to the waist member 20 by the side joining portion 40 . That is, the front waist portion 20f, the rear waist portion 20b, and the tongue piece 30 are integrally joined by the side joint portion 40 . However, the tongue piece 30 may be joined to the waist member 20 at a location different from the side joining portion 40 .

The engaging portion 32 is provided at the end of the base sheet 31 on the opposite side to the side joined by the side joining portion 40 in the left-right direction. Also, the engaging portion 32 is provided on the skin side of the base sheet 31, faces the non-skin side of the front waist portion 20f, and is detachably engaged with the non-skin side of the front waist portion 20f. The engaging portion 32 may be, for example, a male member of a plane fastener provided with a protrusion (hook member) capable of being hooked to the fibers constituting the non-skin side sheet 21 . In addition, a member (for example, a female member of a plane fastener) that the engaging portion 32 engages easily is provided on the non-skin side of the non-skin side sheet 21 .

＜About how to put on sanitary napkin 1＞ 4A and 4B are schematic cross-sectional views of the sanitary napkin 1 viewed from the side of the waist opening 1a. FIG. 4A is a diagram of the sanitary napkin 1 used in the underpants type, and FIG. 4B is a diagram of the sanitary napkin 1 used in the adhesive tape type. FIG. 5 is a developed plan view of the sanitary napkin 1 in a state where the front waist portion 20f is separated from the rear waist portion 20b along the incision line 25 .

In the initial state when the sanitary napkin 1 is taken out from the package, it is a shorts type in which the front waist portion 20f and the rear waist portion 20b are connected in a ring ( FIG. 4A ). Therefore, the wearer can put on and take off the sanitary napkin 1 in the underpants type state.

Moreover, front waistline part 20f of the sanitary napkin 1 has the incision line 25 which has length in the up-down direction at the edge part of both sides in the left-right direction. Therefore, the front waist portion 20f is torn in the vertical direction along the cutting line 25, and a part of the front waist portion 20f can be separated from the rear waist portion 20b. The separated sanitary napkin 1 is, as shown in FIG. 5 , an adhesive tape type in which a pair of tongue pieces 30 protrude from the rear waist portion 20b toward both outer sides in the left-right direction. Therefore, the wearer can put on and take off the sanitary napkin 1 as an adhesive tape type.

In the following description, the portion of the front waist portion 20f separated from the rear waist portion 20b on at least one side in the left-right direction is also referred to as "abdominal contact portion 20fA". Also, the portion of the front waist portion 20f remaining on the side joint portion 40 side without being separated from the rear waist portion 20b is also referred to as "non-separation portion 20fB".

FIGS. 6A to 6C and FIGS. 7A to 7D are diagrams illustrating an example of how a wearer puts on the sanitary napkin 1 . The wearer of the sanitary napkin 1 generally puts on and takes off the sanitary napkin 1 by himself. In addition, as shown in FIG. 6C and the like, the wearer puts on and takes off the sanitary napkin 1 while sitting on a not-shown toilet or the like, or standing (bending posture).

Next, an example of a method of wearing the sanitary napkin 1 in an adhesive tape type will be described. First, as shown in FIG. 6A , the wearer opens the tongue piece 30 on one side in the left-right direction of the underpants-shaped sanitary napkin 1 toward the outside (one side) in the left-right direction to expose the incision line 25 . Next, as shown in FIG. 6B, the wearer tears one end portion of the front waist portion 20f in the vertical direction along the incision line 25 in the left-right direction, so that the abdomen side, which becomes a part of the front waist portion 20f, can be pressed against the front waist portion 20f. The joint portion 20fA is separated from the rear waistline portion 20b. Next, as shown in FIG. 6C , the wearer pulls the cut portion of the waist member 20 to the front of the thigh, and wraps the waist member 20 around one thigh. Then, as shown in FIG. 7A , the tongue piece 30 (engagement portion 32 ) is engaged with the non-skin side of the front waistline portion 20 f (abdominal contact portion 20 fA) above the thigh.

In the state of FIG. 7A , the side joints 40 are located on the thighs, and the absorbent main body 10 (absorbent core 11 ) hangs down between the thighs. Therefore, the wearer rotates the sanitary napkin 1 in the circumferential direction of the thigh (the direction shown on the right thigh in FIG. 7A ). In this way, as shown in FIG. 7B , align the side joints 40 with your armpits, and pull the absorbent main body 10 between your thighs.

Next, as shown in FIG. 7C, the wearer opens the tongue 30 on the opposite side to the outside in the left-right direction, and tears the end portion on the other side in the left-right direction of the front waist portion 20f along the incision line 25 toward the up-down direction. The abdomen side contact part 20fA which becomes a part of the front waistline part 20f is separated from the back waistline part 20b. At the same time, the wearer adjusts the inclination of the absorbent body 10 inclined towards the thigh side of the wrapped sanitary napkin 1 along the direction in which the thighs extend, while positioning the absorbent body 10 between the thighs (the wearer center of the width direction). Then, as shown in FIG. 7D, the cut-off portion of the waist member 20 is pulled to the front side of the thigh, the waist member 20 is also wrapped around the thigh on the opposite side, and the tongue piece 30 is engaged with the front waist portion 20f above the thigh. the non-skin side.

In this way, as shown in FIG. 4B , the ventral abutting portion 20fA of the front waistline 20f separated by the incision line 25 is formed into a ring-shaped state again connected to the rear waistline 20b by a pair of tongue pieces 30. . Then, the wearer's two legs pass through the pair of leg openings 1b of the sanitary napkin 1 . Finally, the wearer pulls up the sanitary napkin 1 to complete wearing the sanitary napkin 1 .

In this way, by having the tongue 30 detachably engaged on the non-skin side of the front waist portion 20f, when the wearer uses the sanitary napkin 1 as an adhesive tape, he can see the tongue 30 from his front side. The tongue piece 30 is engaged with the front waist portion 20f. Therefore, wearability when the wearer himself wears the sanitary napkin 1 is good. Moreover, even when detaching the sanitary napkin 1, the wearer can detach the tongue 30 from the front waist portion 20f while seeing the tongue 30 from the front side of the wearer.

In addition, when wearing the sanitary napkin 1 in the underpants-shaped state, although the sanitary napkin 1 can also be taken off under the shorts-shaped state, the sanitary napkin 1 can also be removed by tearing the front waist portion 20f through the incision line 25 . On the contrary, when the sanitary napkin 1 is worn in the adhesive tape type state, the sanitary napkin 1 can be taken off without removing the tongue piece 30 .

As in the sanitary napkin 1 of this embodiment, because the shorts type (underpants type) sanitary napkin is made into an adhesive tape type and made into a specification that can be worn by oneself, the wearer himself tears off a part of the waist member and arranges it on the body, When the tongue is fixed to the waist, if the waist member is not easy to tear, there is a concern that the wearer will need to change hands repeatedly to try to tear it off, and a part of the sanitary napkin may be damaged by applying more than necessary force. concerns etc.

In this regard, the sanitary napkin 1 of the present embodiment has the following structure. 8 and 9 are front views of the underpants-type sanitary napkin 1 viewed from the front. First, as shown in FIG. 2 and FIG. 5, the front waist portion 20f and the rear waist portion 20b respectively have skin side sheets 22, 23 that are stretchable in the left-right direction, and the waist elastic member 24, and are stretchable in the left-right direction. That is, at least the central part of the front waistline part 20f and the back waistline part 20b in the left-right direction expands and contracts in the left-right direction by the stretchable region (low elastic part 20EA described later) in the left-right direction to make the sanitary napkin 1 and the wearer's waist fit. Furthermore, as shown in FIG. 8 (and FIG. 2 and FIG. 5 ), the front waistline portion 20f has high elasticity portions 20NA having a larger elastic modulus than the periphery at both ends in the left-right direction. The highly elastic portion 20NA in this embodiment is provided on both sides of the front waistline portion 20f in the left-right direction as shown in FIG. It is provided from the upper side edge 20fup of the front waistline part 20f to the lower side edge 20fdw in the up-down direction. In addition, the high elastic portion 20NA is not limited to the above range, and the high elastic portion 20NA is provided between the left and right side edges 20fe, 20fe of the front waist portion 20f, as long as it is provided in the overlapping region 20fC where the front waist portion 20f overlaps with the tongue piece 30 in plan view. (Refer to FIG. 8 ) at least a part is sufficient.

The modulus of elasticity of the front girth portion 20f, for example, can also be cut out from the front girth portion 20f in a natural state, and the parts between the high elastic portion 20NA and the left and right high elastic portions 20NA are respectively cut out to make samples, and a tensile testing machine (such as (KK Shimadzu Corporation's automatic stereograph type tensile testing machine AG-1KN1, etc.) conducts a tensile test to calculate the tensile modulus of elasticity.

In the present embodiment, the highly elastic portion 20NA of the front waistline portion 20f is bonded with a plurality of scattered sheets when the skin side sheet 22 and the non-skin side sheet 21 constituting the front waistline portion 20f are joined by ultrasonic bonding. The bonding pattern of the part (not shown) is formed so that the high elastic part 20NA and the low elastic part 20EA mentioned later are different. Specifically, for example, the highly elastic portion 20NA may be formed by increasing the number of sheet joining portions in the high elastic portion 20NA and weakening the stretchability of the skin side sheet 22 .

In addition, not limited to ultrasonic bonding, other bonding methods such as heat sealing may be used. Again, the high elastic portion 20NA can also be formed by other methods. For example, another non-stretchable sheet member such as non-woven fabric can be pasted on the portion forming the high elastic portion 20NA to make the high elastic The skin-side sheet 22 in the portion 20NA is hard to expand and contract, and forms the highly elastic portion 20NA with a large modulus of elasticity. Also, for example, instead of using a stretchable non-woven fabric as the material constituting the front waistline 20f, the front waistline 20f can be formed by a thin sheet member such as two non-stretchable non-woven fabrics, and the elasticity that stretches and contracts in the left-right direction can be formed by thread rubber. The member is arranged between the two sheet members, and the high elastic portion 20NA having a desired modulus of elasticity is formed by changing the thickness of the thread rubber in the high elastic portion 20NA and the low elastic portion 20EA.

When using the sanitary napkin 1 in the form of an adhesive tape, the wearer first holds the tongue piece 30 that spreads outward in the left and right direction with one hand as shown in FIG. The portion corresponding to the overlapping region 20fC overlapping with the tongue piece 30 shown in FIG. 8 is pulled outward in the left-right direction to separate from each other. Since the highly elastic portion 20NA of the front waist portion 20f has properties that are not easily deformed (difficult to elongate), the front waist portion 20f is easily torn at the portion of the high elastic portion 20NA. Since the wearer can easily tear off the front waist portion 20f at the initial stage of the wearing procedure, the wearability is improved and the next procedure can be smoothly performed. Again, when tearing off the tongue piece 30 on the opposite side (when carrying out the action shown in FIG. 7C ), the wearer also easily tears the front waistline portion 20f at the part of the high elastic portion 20NA, and the wearer in the sitting state Wearability is also improved.

Also, although the high elastic portion 20NA of the front waistline portion 20f in the present embodiment is provided from the upper side edge 20fup to the lower side edge 20fdw in the vertical direction, it may be configured such that the high elastic portion 20NA overlaps the tongue piece 30 in the left and right direction. At least a part of the region may be provided with the high elastic portion 20NA in the upper region including the upper edge 20fup or in the lower region including the lower edge 20fdw. The upper side edge 20fup or the lower side edge 20fdw of the front waistline part 20f is a part which becomes the starting point of tearing when performing the tearing operation of the front waistline part 20f shown in FIG. 6B and FIG. 7C. In particular, as shown in FIG. 6B, when taking out the product and tearing the end portion of one side of the front waist portion 20f in the left and right direction along the incision line 25 in the up and down direction, the user will tear it from the upper side edge 20fup side of the front waist portion 20f. There are many situations. In such a case, if the high elastic portion 20NA is provided in the upper region including the upper edge 20fup, it becomes easier to perform the tearing operation more smoothly. On the other hand, as shown in FIG. 7C , when the end portion on the opposite side (the other side) in the left-right direction is torn along the incision line 25 in the up-down direction in a sitting state, the user will see the lower side edge of the front waistline 20f. The 20fdw side is often torn. In such a case, if the highly elastic portion 20NA is provided in the lower region including the lower edge 20fdw, it becomes easier to perform the tearing operation more smoothly.

The sanitary napkin 1 is a shorts-type absorbent article for adults, but compared with, for example, a shorts-type disposable diaper that is worn by a care receiver who is assisted by a caregiver in wearing a shorts-type absorbent article, The length L1 (FIG. 8) of the up-down direction of the front waistline part 20f is a short structure. Specifically, as shown in FIG. 8 , the sanitary napkin 1 in a natural state is engaged with the non-skin side of the front waist portion 20 f in a state where the tongue piece 30 joined to the side joint portion 40 is closed toward the inside in the left-right direction. The minimum value of the vertical length L1 of the front waist part 20f in the area 20fC where the front waist part 20f and the tongue piece 30 overlap in the left-right direction is 80 mm or more and 150 mm or less.

In addition, when the initial state of the sanitary napkin 1 taken out from the package is the state of FIG. 8 , the initial state and the natural state of the sanitary napkin 1 are measured. When the initial state is not the state of FIG. 8 (for example, the tongue 30 is folded, etc.), relative to the sanitary napkin 1 in the natural state (the waist member 20 in the natural state), it will be unfolded from the side joint portion 40 toward the inside of the left-right direction. The measurement was performed with the tongue piece 30 engaged with the front waist portion 20f.

The region 20fC of the front waist portion 20f overlapping with the tongue piece 30 is a portion that is easily held by the wearer when the tongue piece 30 shown in FIG. 6B and FIG. 7C is opened and the front waistline portion 20f is torn apart. Therefore, by setting the vertical length L1 of the area 20fC to be 150 mm or less, the wearer can easily tear the front waist portion 20f. On the other hand, if the length L1 of the front waistline portion 20f is too short, the area covered by the wearer's body may be too small to cause the wearer's uneasiness. However, the length L1 of the vertical direction of the region 20fC Such anxiety can be suppressed by setting it above 80mm.

Moreover, as shown in FIG. 9, the incision line 25 which has length in the up-down direction is provided in the highly elastic part 20NA of the front waistline part 20f. The incision line 25 is a line that induces tearing when the wearer tears the front waist portion 20f. By setting such an incision line 25 in the highly elastic portion 20NA that is difficult to stretch and easy to tear, the front waistline can be torn more easily. Section 20f.

Also, as shown in FIG. 9 , the sanitary napkin 1 in the natural state of the non-skin side of the front waistline portion 20 f is engaged in the state where the tongue piece 30 joined to the side joint portion 40 is closed toward the inside in the left-right direction, and the up-down direction The length L2 of the side joint portion 40 is longer than the length L3 of the incision line 25 . Since the length of the incision line 25 is relatively short, when a certain force is applied in order to perform the tearing action shown in FIGS. 40 has more force per unit length. Therefore, when the front waist portion 20f is torn, it is easily torn along the incision line 25 .

In addition, as shown in FIG. 9, before the abdominal abutting portion 20fA of the front waistline 20f is separated from the rear waistline 20b along the incision line 25, the tongue piece 30 is engaged with the non-skin side of the front waistline 20f. In the state, the engaging portion 32 is located inside the incision line 25 in the left-right direction. Assuming that the position of the incision line 25 is located on the inner side than the engaging portion 32 in the left-right direction, for example, after performing the tearing operation shown in FIG. 7C , and then wrapping it around the thigh shown in FIG. The length in the left-right direction of the ventral side contact portion 20fA becomes shorter, and the area where the tongue piece 30 is attached decreases. That is, after cutting away, in order to fix the tongue piece 30 toward the inner side in the left and right direction across the incision line 25 on the side of the abdominal contact portion 20fA, the usable waist size range is narrowed. Also, when the sanitary napkin 1 is used without tearing it apart, the part inside the engaging part 32 in the left-right direction is a part where the front waist part 20f expands and contracts in the left-right direction. If the incision line 25 is provided at such a position, When the product (sanitary napkin 1) is pulled up at the time of wearing, it is easy to tear at the incision line 25 . Therefore, as in the present embodiment, since the engaging portion 32 is located on the inner side of the incision line 25 in the left-right direction, a wide waist size range can be obtained, and the product can be suppressed from being pulled up when it is used without being torn apart. when the rupture.

Also in the state before the ventral abutting portion 20fA of the front waistline 20f is separated from the rear waistline 20b along the incision line 25, and the tongue piece 30 is engaged with the non-skin side of the front waistline portion 20f, the tongue piece 30 is configured to cover at least a portion of incision line 25 . Furthermore, the upper end 25up of the incision line 25 is located on the upper side than the upper end 30up of the tongue piece 30 . If the tongue 30 is arranged so as to cover the entire incision line 25 of the front waist portion 20f, the wearer cannot grasp the position of the incision line 25 until the tongue 30 is opened outward in the left and right direction. If part of the incision line 25 is visible before the tongue piece 30 is opened, the wearer can easily judge where the front waist portion 20f must be torn, and the wearability can be improved. In addition, in the present embodiment, although the lower end of the incision line 25 is covered by the tongue piece 30 so that it is not visible, the lower end of the incision line 25 may be located on the lower side than the lower end of the tongue piece 30 . In this way, it is also easy for the wearer to judge the position that must be torn off.

Also, although the high elastic portion 20NA extends from the side edge 20fe of the front waistline portion 20f to the inner side in the left-right direction than the incision line 25, in a natural state, the high elastic portion 20NA has a thickness of 10 mm from the incision line 25 toward the inner side in the left-right direction. The above length (length W20 in FIG. 9 ) is ideal. After the front waist portion 20f is torn along the incision line 25, the part of the high elastic portion 20NA disposed on the inner side than the incision line 25 becomes the part where the wearer engages the tongue piece 30 on the front waist portion 20f (abdominal side abutment). The grasping part when the non-skin surface side of the joint part 20fA). Since the highly elastic portion 20NA is not easily deformed, the gripping portion is the highly elastic portion 20NA, which is not easily curled, and is easy for the wearer to grip. In addition, since the length W20 is 10 mm or more, it is close to the width of the wearer's thumb or more than the width of the thumb, and it is easier to grasp.

When the wearer detaches (unlocks) the tongue piece 30 from the front waist portion 20f, the wearer assumes that the front end side of the tongue piece 30 is held to detach it. As shown in FIG. 9 , the length W30 from the inner end 32 e of the engaging portion 32 to the inner end 30 e of the tongue piece 30 is preferably 5 mm or more and 50 mm or less in the left-right direction. By setting the length W30 from the inner end 32e of the engaging portion 32 to the inner end 30e of the tongue piece 30 to be 5mm or more, it is easier to grasp the inner side than the inner end 32e of the engaging portion 32 with fingertips, and it is easy to draw from the front waistline. The portion 20f peels off the tongue 30 . On the other hand, by setting the length W30 below 50 mm, the distance from the position of the catch tongue 30 to the incision line 25 will not be too long, and the front waist portion 20f can be prevented from being torn along the incision line 25. reduction in operability.

Moreover, as shown in FIG. 2 , in the underpants-type absorbent article 1 in the unfolded and stretched state, it is desirable that the maximum length W5 of the tongue piece 30 in the left-right direction is not less than 20 mm and not more than 120 mm. By setting the length W5 of the tongue piece 30 in the left-right direction to 20 mm or more, the wearer can easily hold the tongue piece 30 when engaging the tongue piece 30 with the front waist portion 20f. On the other hand, by setting the length W6 of the left-right direction of the tongue piece 30 to 120 mm or less, when the sanitary napkin 1 is wrapped around the thigh, the tongue piece 30 opened outward can be prevented from coming into contact with the toilet. Also, by making the length W5 of the left-right direction of the tongue piece 30 not too long, after the wearer opens the tongue piece 30 and tears the front waistline portion 20f, it is not necessary to easily engage the engaging portion 32 on the front waistline portion. 20f and replace the tongue piece 30 at a position close to the engaging portion 32 .

In addition, the base sheet 31 constituting the tongue 30 of this embodiment is a nonwoven fabric or the like, and the tongue 30 itself does not actually have a stretchable element. When comparing the tongue piece 30 with the front waistline portion 20f, the tongue piece 30 has a larger elastic modulus than the highly elastic portion 20NA of the front waistline portion 20f. That is, the tongue piece 30 is less likely to be deformed (difficult to stretch) than the highly elastic portion 20NA. Therefore, when holding the tongue piece 30 and the front waistline 20f as shown in FIG. 6B and FIG. 7C and tearing along the incision line 25, the force of the pull tab 30 is easily transmitted to the high elastic portion 20NA of the front waistline 20f.

Again, returning to Fig. 2, in the sanitary napkin 1 in the unfolded and stretched state, from one side of the sanitary napkin 1 in the up-down direction (the direction perpendicular to the left-right direction, the direction along the long direction of the absorbent main body 10) The length L6 from the end to the center CL is preferably not less than 200 mm and not more than 350 mm. By setting length L6 to 200 mm or more, the size of the wearer of the adult sanitary napkin 1 can be adjusted. On the other hand, by setting the length L6 to be 350 mm or less, when the tampon 1 is wrapped around the thigh, the tampon 1 is less likely to hang down, and the tampon 1 can be prevented from coming into contact with the toilet.

In the sanitary napkin 1 of this embodiment, as shown in FIG. 8 , the front waist portion 20f has high elasticity in at least a part of each overlapping region 20fC on both sides in the left-right direction overlapping with the pair of tongue pieces 30 in plan view. Portions 20NA, 20NA. Then, between the high elastic parts 20NA, 20NA on both sides in the left-right direction of the front waistline part 20f, the low elastic part 20EA having an elastic modulus smaller than the high elastic part 20NA is continuously provided. The low elastic portion 20EA is a portion that expands and contracts in the left-right direction by the skin-side sheet 22 and the waist elastic member 24 as shown in FIG. 5 . By having the low elastic portion 20EA, the sanitary napkin 1 fits the wearer's waistline. In particular, when the sanitary napkin 1 is used as an adhesive tape type ( FIG. 4B ), although the abdominal abutting portion 20fA of the front waistline portion 20f is separated from the rear waistline portion 20b, the abdominal side is held between the pair of tongue pieces 30 . The abutting portion 20fA is pulled toward both outer sides in the left-right direction, so as to be easily fitted to the waist of the wearer. Moreover, after the tongue piece 30 is attached, the highly elastic parts 20NA and 20NA are respectively provided on the outer side in the left-right direction than the engaging part 32 . In addition, these highly elastic parts 20NA, 20NA exist on the skin side rather than the tongue piece 30. As shown in FIG. Since the highly elastic portion 20NA is not easily deformed, the left and right ends of the front waistline portion 20f are not easily curled. Since such a highly elastic portion 20NA is a part that contacts the skin when worn, the wearer's sense of strangeness can be reduced.

In addition, in a state where the engaging portion 32 of the tongue piece 30 is engaged with the front waist portion 20f, it is desirable that the low elastic portion 20EA has a portion overlapping at least a part of the engaging portion 32 in plan view. The engaging portion 32 is easily engaged with the portion of the low elastic portion 20EA that is more deformable (easily stretchable) than the highly elastic portion 20NA that is difficult to deform. That is, the protrusions for the hook on the fibers of the engaging portion 32 are easier to hook at the portion where the hook gathers wrinkles due to contraction than at the portion where the hook is close to the straightened state. Therefore, when engaging the engaging portion 32 , the wearer can more easily engage the engaging portion 32 by having a portion overlapping with the low elastic portion EA.

FIG. 10 is a front view of the sanitary napkin 1 in a state in which the tongue pieces 30 are engaged as seen from the front side after being separated along the incision line 25 . In the sanitary napkin 1 shown in FIG. 10 , after the abdominal contact portion 20fA of the front waist portion 20f is separated from the rear waist portion 20b along the incision line 25, the separated abdominal contact portion 20fA is unfolded in a natural state, and the The tongue piece 30 is engaged with the non-skin side of the front waist portion 20f. As shown in the figure, in the state where the tongue piece 30 is engaged, the tongue piece 30 has the protrusion part 30T which protrudes to the lower side of an up-down direction rather than the lower side edge 20fdw of the front waistline part 20f. Since it is used as an adhesive tape type, even if the front waist portion 20f is torn along the incision line 25, and the tongue piece 30 is engaged again, the lower part of the front waistline portion 20f is covered by the protruding portion 30T of the tongue piece 30. The ends of the left-right direction of the side edge 20fdw make the end (lower side edge 20fdw) of the torn front waist portion 20f difficult to see. In this way, the sanitary napkin 1 can be made more similar to the appearance of underwear.

===Others=== In the above-mentioned embodiment, with regard to the skin-side sheets 22, 23 constituting the waist member 20, the waist member 20 is provided with stretchability in the left and right directions by using stretchable sheets such as stretchable non-woven fabrics. The member 20 is provided with other telescopic members. For example, as shown in FIG. 2 , waist elastic members 24 such as thread rubber or the like may be stretchably provided in the left-right direction on the upper ends of the front waist portion 20f and the rear waist portion 20b. By providing such a waist elastic member 24, the fitting property in the waist opening 1a is further improved, and the position shift of the waist member 20 can be suppressed when the sanitary napkin 1 is worn.

In the above-mentioned embodiment, although the tongue pieces 30 are provided on both sides in the left-right direction of the waist member 20, they may be provided on only one side. Furthermore, for example, when in use, the tongue piece 30 provided on only one side may be stretched so that the front waist portion 20f can be easily torn along the left-right direction inner end of the side joint portion 40 with a large difference in rigidity. . Thereby, when used, it becomes a pants-type sanitary napkin that can be expanded only on one side. At this time, since the inner end in the left-right direction of the side joint portion 40 functions as the incision line 25 of the present embodiment, it is not necessary to provide a perforation line or the like.

===Second embodiment, and the third embodiment=== As an example of the underpants-type absorbent article of this embodiment, the underpants-type (underpants type) sanitary napkin 1 (hereinafter also only referred to as the sanitary napkin 1) will be described. In addition, the underpants-type absorbent article also includes underpants-type paper diapers, underpants-type absorbent pads, and the like.

＜<<Basic structure of the sanitary napkin 1 of the second and third embodiments >>> FIG. 1 is a schematic perspective view of a sanitary napkin 1 . Fig. 11 is a schematic plan view of the expanded and stretched sanitary napkin 1 viewed from the skin side in the thickness direction. FIG. 12 is a schematic cross-sectional view along line A-A of FIG. 11 .

The sanitary napkin 1 has "vertical direction (or vertical direction)", "left-right direction (or width direction)" and "front-rear direction" which intersect each other (orthogonal) as shown in Fig. 1 . Moreover, as shown in FIG. 12, there is a "thickness direction" which is a direction in which each member is laminated. In the vertical direction (vertical direction), when the wearer wears the sanitary napkin 1, the side that becomes the waistline side of the wearer is defined as the "upper side", and the side that becomes the crotch of the wearer is defined as the "lower side". Also, in the front-rear direction, the side that becomes the ventral side of the wearer at the time of wearing is referred to as the "front side", and the side that becomes the back side of the wearer is referred to as the "rear side". Also, in the thickness direction, the side that contacts the wearer's skin when the wearer wears the sanitary napkin 1 is defined as the "skin side", and the opposite side is defined as the "non-skin side".

The sanitary napkin 1 of this embodiment is equipped with: an absorbent main body 10, which absorbs excrement such as menstrual blood; On the non-skin side of the absorbent main body 10), there are a front waistline part 20f and a rear waistline part 20b;

The unfolded state of the sanitary napkin 1 shown in FIG. flat state. In other words, the sanitary napkin 1 is folded in half toward the front-rear direction at the central position CL (half-fold portion F) in the up-down direction (longitudinal direction) from the unfolded state shown in FIG. ) to form a shorts shape by joining both sides in the left-right direction (width direction) of the front waist part 20f and the rear waist part 20b. As the joining method of the side joint part 40, well-known joining methods, such as heat fusion and ultrasonic welding, can be mentioned. In the underpants type sanitary napkin 1 ( FIG. 1 ), the front waist portion 20f and the rear waist portion 20b are connected in a ring shape to form one waist opening 1a and a pair of leg openings 1b.

The stretched state of the sanitary napkin 1 refers to a state where the elastic member included in the sanitary napkin 1 is stretched to such an extent that the wrinkles of the sanitary napkin 1 cannot be seen. Specifically, the stretched state is to extend the size of each member constituting the sanitary napkin 1 to the same size as the single member (that is, the size in a state where the elastic properties of the elastic member do not occur) or close to this size. . In addition, in this embodiment, when the length of the main body part of the sanitary napkin 1 is measured and compared, in the state which disengaged the tongue piece 30 (or the state which separated (peeled off) the tongue piece 30), and It is ideal to measure and compare in a state before the incision line 26 tears the waist member 20 . On the other hand, the measurement of the length of the tongue piece 30 (engagement member) etc. can also be carried out under the state that the tongue piece 30 is engaged with the waist circumference member 20, also can be carried out under the state that disengages, also can be the tongue piece 30 is carried out in a state separated from the waist member 20 . However, the method of this measurement and comparison is an example, and other methods may be used.

(absorbent body 10) As shown in FIG. 11 , the absorbent main body 10 is a rectangular member in plan view along the vertical direction (longitudinal direction) of the sanitary napkin 1 . Then, as shown in FIG. 12 , the absorbent main body 10 has: an absorbent core 11 , a top sheet 12 arranged on the skin side more than the absorbent core 11 , and a top sheet 12 arranged on the non-skin side than the absorbent core 11 . side back sheet 13 . However, the absorptive main body 10 may include other sheet members. For example, a second sheet (not shown) may be provided between the top sheet 12 and the thickness direction of the absorptive core 11 .

The absorbent core 11 is a member that absorbs and holds liquid such as menstrual blood, and is formed, for example, of liquid-absorbent fibers such as pulp fibers mixed with superabsorbent polymer (SAP). In addition, the outer peripheral surface of the absorptive core 11 may be covered with a liquid-permeable sheet member (core covering sheet) such as tissue paper or nonwoven fabric.

The top sheet 12 is a liquid-permeable sheet-permeable member capable of contacting the wearer's skin when worn, and is formed of, for example, a hydrophilic air-through nonwoven fabric, a spunbonded nonwoven fabric, or the like.

The back sheet 13 is composed of a liquid-impermeable sheet 13a for preventing liquid such as menstrual blood absorbed by the absorbent core 11 from leaking to the outside, and a hydrophobic layer disposed on the non-skin side of the liquid-impermeable sheet 13a. The two-layer structure of the sheet 13b is formed. As the liquid-impermeable sheet 13a, for example, a resin film or the like can be used, and as the water-repellent sheet 13b, for example, a flexible nonwoven fabric or the like can be used. However, the hydrophobic sheet 13b may not necessarily be provided, and the back sheet 13 may be constituted only by the liquid-impermeable sheet 13a.

Moreover, the absorptive main body 10 has the leak-proof wall part 14 which can stand up toward the skin side on both side parts of the left-right direction (width direction). For example, both sides in the left-right direction (width direction) of the hydrophobic sheet 13b are folded inward in the left-right direction (width direction) so as to be positioned on the skin side of the top sheet 12, and by being folded over A leak-proof wall elastic member 141 (for example, thread rubber) that expands and contracts in the longitudinal direction forms the leak-proof wall portion 14 . Side leakage of excreted liquid can be suppressed by the leak-proof wall portion 14 . However, the absorptive main body 10 may not be provided with the leak-proof wall portion 14 .

Moreover, the absorbent body 10 is provided with a plurality of absorber elastic members 15 that expand and contract along the longitudinal direction thereof. The absorbent elastic member 15 is made of thread rubber, for example, and is located on the non-skin side of the liquid-impermeable sheet 13a located on the non-skin side of the absorbent core 11 (in FIG. between the sheets 13b) are arranged in a state stretched in the longitudinal direction. In the sanitary napkin 1 of this embodiment, five absorber elastic members 15 are provided at predetermined intervals in the left-right direction (see FIG. 11 ). The elongation ratio of the absorbent elastic member 15 is preferably about 1.4 to 3.3 times. In addition, the elongation ratio is represented by the value obtained by dividing the length of the elastic member in the stretched state by the length of the elastic member in the natural state. The elongation ratio of the absorber elastic member 15 may be set to a certain degree of high ratio. By setting in this way, as shown in FIG. 17 described later, the absorbent main body 10 is lifted toward the wearer's skin side, and the absorbent main body 10 is easily attached to the crotch (vaginal opening) of the wearer, and the Leakage of excreta.

(waist member 20) The waist member 20 is an exterior body composed of a plurality of sheet members, and includes at least a non-skin side sheet 21 and skin side sheets 22 and 23 (see FIG. 12 ). In the following description, when the sanitary napkin 1 ( FIG. 11 ) in the unfolded state is divided into two at the center position CL in the vertical direction (longitudinal direction), the position in the vertical direction (longitudinal direction) of the front side waist member 20 is aligned with the side joining portion 40. The overlapped part is called "front waistline part 20f", and the part below this (the crotch side) is called "front side extension part 20fe". Similarly, in the waist member 20 on the rear side of the central position CL, the position in the vertical direction (longitudinal direction) overlapping with the side joint portion 40 is called "rear waist part 20b", and the part below this is called "rear waist part 20b". It is "rear extension part 20be".

The non-skin side sheet 21 is a non-stretchable sheet member disposed on the most non-skin side of the sanitary napkin 1, and is formed of, for example, a spunbond nonwoven fabric, SMS nonwoven fabric, or the like. The non-skin side sheet 21 of the present embodiment has a shape narrowed toward the inside in the left-right direction (width direction) at the longitudinal central portion as shown in FIG. 11 .

The skin-side sheets 22 and 23 are stretchable sheet members laminated on the skin side of the non-skin-side sheet 21 on the front side and rear side (abdominal side) of the waist member 20 . The skin-side sheets 22 and 23 have stretchability at least in the left-right direction (width direction) of the sanitary napkin 1 . Stretchable nonwoven fabrics and stretchable films can be mentioned as stretchable sheet members, and the skin side sheets 22 and 23 of this embodiment are stretchable nonwoven fabrics.

Stretchable nonwoven fabric is a stretchable nonwoven fabric that includes stretchable stretchable fibers and stretchable fibers that are less shrinkable than the stretchable fibers, and is subjected to appropriate stretching treatments such as gear calendering. For stretchable fibers, fibers of polyurethane-based elastomer, which is a kind of elastic thermoplastic elastomer, can be used, and for stretchable fibers, fibers of polyolefin-based resin, which is a kind of non-elastic thermoplastic resin, can be used. Fibers of polypropylene (PP).

The non-skin-side sheet 21 and the skin-side sheets 22 and 23 are intermittently bonded by scattered joints (joints caused by thermal fusion, ultrasonic welding, etc.) not shown. Therefore, stretchability along the left-right direction (width direction) is imparted to the portion of the waist member 20 where the skin-side sheets 22 and 23 are disposed. When the waist member 20 shrinks, the non-skin side sheet 21 bends (convexes) between the junctions, and the skin feel of the waist member 20 improves, visually forming a soft impression.

In addition, other sheet members than the non-skin side sheet 21 and the skin side sheets 22 and 23 may be provided as the sheet member constituting the waist member 20 . For example, the waist member 20 has a non-stretchable non-woven fabric disposed on the skin-side of the stretchable skin-side sheets 22, 23, or may have a three-layer structure in which a stretchable non-woven fabric is sandwiched between non-stretchable non-woven fabrics. In addition, the non-skin side sheet 21 may be separated on the front side and the back side. At this time, between the non-skin side sheet 21 on the front side and the non-skin side sheet 21 on the rear side, the non-skin side of the back sheet 13 may be exposed, and the non-skin side sheet 21 connecting the front side and the front side non-skin side sheet 21 may also be provided at the crotch portion. The non-skin side sheet of the different body of the non-skin side sheet 21 on the rear side.

(Tongue 30) The sanitary napkin 1 has a pair of tongue pieces 30 (engagement members) detachably engaged with the non-skin side of the front waist portion 20 f on both sides in the left-right direction (width direction) of the waist member 20 . In addition, FIG. 11 is a virtual representation of the tongue piece 30 engaged with the non-skin side of the front waist portion 20f in the sanitary napkin 1 viewed from the skin side. The tongue 30 has a base sheet 31 and an engaging portion 32 . The base sheet 31 is a sheet member formed of nonwoven fabric or the like. The outer end portion of the base sheet 31 in the left-right direction (width direction) is joined to the waist member 20 by the side joining portion 40 . That is, the front waist portion 20f, the rear waist portion 20b, and the tongue piece 30 are integrally joined by the side joint portion 40 . However, the tongue piece 30 may be joined to the waist member 20 at a location different from the side joining portion 40 .

The engaging portion 32 is provided at an end portion of the base sheet 31 on the opposite side to the side joined by the side joining portion 40 in the left-right direction (width direction). Also, the engaging portion 32 is provided on the skin side of the base sheet 31, faces the non-skin side of the front waist portion 20f, and is detachably engaged with the non-skin side of the front waist portion 20f. The engaging portion 32 may be, for example, a male member of a plane fastener provided with a protrusion (hook member) capable of being hooked to the fibers constituting the non-skin side sheet 21 . In addition, a member (for example, a female member of a plane fastener) that the engaging portion 32 engages easily is provided on the non-skin side of the non-skin side sheet 21 .

＜<<The wearability of the sanitary napkin 1 of the second embodiment and the third embodiment>>> 13A and 13B are schematic cross-sectional views of the sanitary napkin 1 viewed from the side of the waist opening 1a. FIG. 13A is a diagram of the sanitary napkin 1 used in the underpants type, and FIG. 13B is a diagram of the sanitary napkin 1 used in the tape type. FIG. 14 is a developed plan view of the sanitary napkin 1 in a state where the front waist portion 20f is separated from the rear waist portion 20b along the incision line 26 .

In the initial state when the sanitary napkin 1 is taken out from the package, it is a shorts type in which the front waist portion 20f and the rear waist portion 20b are connected in a ring ( FIG. 13A ). Therefore, the wearer can put on and take off the sanitary napkin 1 in the underpants type state.

Moreover, 20 f of front waist parts of the sanitary napkin 1 have the incision line 26 which has length in the up-down direction (vertical direction) at the edge part of both sides in the left-right direction (width direction). Therefore, the front waist portion 20f is torn in the vertical direction (vertical direction) along the cutting line 26 to separate a part of the front waist portion 20f from the rear waist portion 20b. As shown in FIG. 14, the separated sanitary napkin 1 is an adhesive tape type in which a pair of tongue pieces 30 protrude from the rear waist portion 20b toward both outer sides in the left-right direction (width direction). Therefore, the wearer can put on and take off the sanitary napkin 1 as an adhesive tape type.

In the following description, the portion of the front waist portion 20f separated from the rear waist portion 20b on at least one side in the left-right direction (width direction) is also referred to as "abdominal contact portion 20fA". Also, the portion of the front waist portion 20f remaining on the side joint portion 40 side without being separated from the rear waist portion 20b is also referred to as "non-separation portion 20fB".

FIGS. 15A to 15C and FIGS. 16A to 16D are diagrams illustrating an example of how a wearer puts on the sanitary napkin 1 . The wearer of the sanitary napkin 1 generally puts on and takes off the sanitary napkin 1 by himself. In addition, as shown in FIG. 15C and the like, the wearer puts on and takes off the sanitary napkin 1 while sitting on a not-shown toilet or the like, or standing (bending posture).

Next, an example of a method of wearing the sanitary napkin 1 in an adhesive tape type will be described. 15A, the wearer first opens the tongue piece 30 on one side in the left-right direction (width direction) of the underpants-type sanitary napkin 1 toward the outside (one side) in the left-right direction (width direction), so that the incision line 26 exposed. Next, as shown in FIG. 15B, the wearer tears the end portion of one side in the left-right direction (width direction) of the front waistline 20f along the incision line 26 toward the up-down direction (longitudinal direction), and the front waistline 20f can be cut. A part of the abdominal abutting portion 20fA is separated from the rear waistline portion 20b. Next, as shown in FIG. 15C , the wearer pulls the cut portion of the waist member 20 to the front of the thigh, and wraps the waist member 20 around one thigh. Then, as shown in FIG. 16A , the tongue piece 30 (engagement portion 32 ) is engaged with the non-skin side of the front waistline portion 20f (abdominal contact portion 20fA) above the thigh. Moreover, FIG. 16B has shown the inner side of the thigh wound with the sanitary napkin 1 like FIG. 16A.

In the state of FIG. 16A and FIG. 16B , the side joint portion 40 is located on the thigh, and the absorbent main body 10 (absorbent core 11 ) hangs down between the thighs. Therefore, the wearer rotates the sanitary napkin 1 in the circumferential direction of the thigh. In this way, as shown in FIG. 16C , align the side joints 40 with your armpits, and pull the absorbent body 10 between your thighs.

Next, the wearer opens the tongue 30 on the opposite side outward in the left-right direction (width direction), and also separates the front waist portion 20f from the rear waist portion 20b on the opposite side. At the same time, the wearer adjusts the inclination of the absorbent body 10 inclined towards the thigh side of the wrapped sanitary napkin 1 along the direction in which the thighs extend, while positioning the absorbent body 10 between the thighs (the wearer center of the width direction). Then, as shown in FIG. 16D, the cut-off portion of the waist member 20 is pulled to the front side of the thigh, the waist member 20 is also wrapped around the thigh on the opposite side, and the tongue piece 30 is engaged with the front waist portion 20f above the thigh. the non-skin side.

In this way, as shown in FIG. 13B , the ventral abutting portion 20fA of the front waistline 20f separated by the incision line 26 is formed into a ring-shaped state again connected to the rear waistline 20b by a pair of tongue pieces 30. . Moreover, the wearer's both thighs pass through the pair of leg openings 1b of the sanitary napkin 1 in a state. Finally, the wearer pulls up the sanitary napkin 1 to complete wearing the sanitary napkin 1 .

Thus, the sanitary napkin 1 of this embodiment has the tongue piece 30 which is detachably engaged with the non-skin side of the front waistline part 20f. Therefore, when the wearer uses the sanitary napkin 1 as an adhesive tape, the tongue piece 30 can be engaged with the front waist portion 20f while seeing the tongue piece 30 from the front side of the wearer. Therefore, wearability when the wearer himself wears the sanitary napkin 1 is good. Moreover, even when detaching the sanitary napkin 1, the wearer can detach the tongue 30 from the front waist portion 20f while seeing the tongue 30 from the front side of the wearer.

In addition, in the sanitary napkin 1 of this embodiment, the tongue piece 30 is provided on the non-skin side (outer side) than the waistline member 20, and the engaging portion 32 provided on the skin side of the tongue piece 30 is engaged with the front waistline portion 20f. Non-skin side. But it is not limited to this, and the tongue 30 can also be provided on the skin side (inside) of the waist member 20. After the waist member 20 is separated, the engaging portion 32 provided on the non-skin side of the tongue 30 becomes engaged with the front waist portion. The shape of the skin side of 20f.

Again, when wearing the sanitary napkin 1 in the underpants-shaped state, though the sanitary napkin 1 can also be taken off under the shorts-shaped state, the sanitary napkin 1 can also be removed by tearing the front waist portion 20f at the incision line 26. On the contrary, when the sanitary napkin 1 is worn in the adhesive tape type state, the sanitary napkin 1 can be taken off without removing the tongue piece 30 .

＜＜＜About sanitary napkin 1 of the second embodiment＞＞＞ Fig. 17 is a front view of the underpants type sanitary napkin 1 seen from the front side. Fig. 17 is a front view of the sanitary napkin 1 in which the front waist portion 20f is separated from the rear waist portion 20b on one side in the left-right direction. In addition, FIG. 17 is a state where the tongue piece 30 on the separated side is closed toward the inside in the left-right direction, and is located between the front waist portion 20f and the rear waist portion 20b. FIG. 19 is a view showing a part of the rear waist portion 20b in a state where the front waist portion 20f is separated on one side (cut line 26 ) in the left-right direction and the tongue piece 30 is opened outward. Fig. 20 is a front view of the sanitary napkin 1 in which the front waist portion 20f is separated from the rear waist portion 20b on both sides in the left-right direction.

Although the sanitary napkin 1 is a shorts-type absorbent article for adults (the primary and secondary school students who have just started menstruating are also included in the wearing object), the lengths L1 and L2 in the vertical direction of the front waist portion 20f and the side joint portion 40 are compared. short. For example, the vertical length of the front waist portion 20 f is shorter than that of a shorts-type disposable diaper intended to be worn by a care receiver who is assisted by a caregiver to put on the shorts-type absorbent article.

Specifically, as shown in FIG. 17 , the sanitary napkin 1 in a natural state is engaged with the non-skin side of the front waist portion 20 f in a state where the tongue piece 30 joined to the side joint portion 40 is closed toward the inside in the left-right direction. Lengths L1 and L2 in the up-down direction of the front waistline part 20f and the side joint part 40 are set as follows. First, the minimum length L1 in the up-down direction of the portion 20fC of the front waistline portion 20f where the position in the left-right direction overlaps the tongue piece 30 is set to 80 mm or more and 150 mm or less. Moreover, the length L2 of the up-down direction of the side joint part 40 of the joint tongue piece 30 is made into 100 mm or more and 160 mm or less.

In addition, when the initial state of taking out the sanitary napkin 1 from the package is the state of FIG. 17, the initial state and the natural state sanitary napkin 1 were measured. When the initial state is not the state of FIG. 17 (for example, the tongue 30 is folded, etc.), relative to the sanitary napkin 1 in the natural state (the waist member 20 in the natural state), it will be unfolded from the side joint portion 40 toward the inside in the left-right direction. The measurement was performed in a state where the tongue piece 30 was engaged with the front waist portion 20f.

The portion 20fC of the front waist portion 20f overlapping with the tongue 30 is a portion that is easily held by the wearer who opens the tongue 30 and tears the front waist portion 20f as shown in FIG. 15C. Therefore, by making the vertical length L1 of the part 20fC relatively short, the wearer can easily hold the part 20fC and easily pull the front waist part 20f in front of the thigh. Also, as shown in FIG. 16D, when the front waistline 20f above the thigh is pressed from above, the front waistline 20f can be pressed in a large range in the up and down direction with the hand, and the position of the front waistline 20f can be stabilized. Engage the tongue piece 30 below.

According to the survey results of Japanese hand size data by the Artificial Intelligence Research Center, the average length from the root of the thumb and index finger to the tip of the index finger is 100.6mm for women, 109.7mm for men, and 109.7mm for men. 107mm for men and women). Therefore, by setting the above-mentioned dimension L1 of the front waist portion 20f to be 150 mm or less, the wearer can hold the front waist portion 20f for more than half the length in the vertical direction and press it. Therefore, the tongue piece 30 can be stably engaged, and the wearability of the sanitary napkin 1 can be improved.

On the other hand, the waist member 20 is a member that expands and contracts in the left-right direction, and is fitted to the waist of the wearer. Since the above-mentioned dimension L1 of the front waistline part 20f is set to 80 mm or more, it is preferable not to be too short. In this way, the sanitary napkin 1 can be prevented from being shifted and dropped, and the wearer can use the sanitary napkin 1 with peace of mind.

Also, since the vertical length L2 of the side joint portion 40 is shortened similarly to the front waist portion 20f, the vertical length of the tongue piece 30 joined to the side joint portion 40 is also shortened. Therefore, as shown in FIG. 15C , the wearer can easily hold the tongue 30 . However, the vertical length L2 of the side joint portion 40 is preferably slightly longer than the vertical length L1 of the front waist portion 20f, and is within a range of 100 mm to 160 mm. In this way, as shown in FIG. 15C , when the wearer holds the tongue piece 30 and pulls the sanitary napkin 1 from under the thigh, the pulling force is easily transmitted to the rear of the sanitary napkin 1 through the vertically long side joints 40 On a large range in the up and down direction of the department. Therefore, it is easy to pull up the rear part of the tampon 1 from under the thigh. However, the present invention is not limited thereto, and the vertical lengths L1 and L2 of the front waist portion 20f and the side joint portion 40 may be equal to each other.

In this way, the lengths L1 and L2 of the front waist portion 20f and the side joint portion 40 are shortened, and wearability when the wearer wears the sanitary napkin 1 by himself improves. In addition, in the case of a shorts-type absorbent article for adults (for example, the sanitary napkin 1 of this embodiment, light incontinence diapers, etc.) for the wearer who wears himself or herself, compared with a shorts-type absorbent article for nursing care, the absorption The absorbent core 11 is small, and the absorbent core 11 is also light after excretion. Therefore, even if the lengths L1 and L2 of the front waistline part 20f and the side joining part 40 are shortened, there is little concern that the underpants-type absorbent article will deviate and fall.

Furthermore, by shortening the lengths L1 and L2 of the front waist portion 20f and the side joining portion 40, as shown in FIG. 16B , when the sanitary napkin 1 is wrapped around the thigh, the sanitary napkin 1 (especially the absorbent main body 10) is less likely to hang down. . Therefore, the sanitary napkin 1 is less likely to come into contact with the toilet, and can be used hygienically. In addition, since the sanitary napkin 1 has a shape close to that of underwear, the appearance of the sanitary napkin 1 is also improved.

In addition, as shown in FIG. 18 , the sanitary napkin 1 is formed such that a portion of the front waist portion 20 f has an abdominal abutment portion 20 fA extending from the rear waist portion 20 b along the inner side end 40 a (see FIG. 17 ) of the side joint portion 40 on one side in the left-right direction. When the separated state is in a natural state, the following conditions are ideal. First, the length W1 from the end P1 on one side of the abdomen side abutting portion 20fA in the left-right direction to the inner end 40a of the side joint portion 40 on the other side is shorter than that from the end P1 on one side of the rear waistline portion 20b in the left-right direction. The length W2 from P2 to the inner end 40a of the side joint portion 40 on the other side is preferably longer. That is, it is preferable that the end P1 on one side in the left-right direction of the abdominal side contact portion 20fA is located on one side (outer side) in the left-right direction than the end P2 on one side in the left-right direction of the rear waistline portion 20b.

In this case, when the wearer tears one end portion of the left-right direction of the waist member 20 in order to wear the sanitary napkin 1, the length W1 of the left-right direction of the abdominal side contact portion 20fA becomes longer, and the left-right direction of the rear waist portion 20b becomes longer. The length W2 is easily shortened. When the wearer tears the front waist portion 20f at the side joint portion 40, the above-mentioned length relationship is established.

When the length W1 in the left-right direction of the abdominal contact portion 20fA is long, the wearer can easily pull the abdominal contact portion 20fA to the front of the thigh when wrapping the waist member 20 around the thigh. Therefore, the wearer can stably engage the tongue piece 30 with the ventral abutting portion 20fA by being stuck on the thigh, thereby improving the wearability of the sanitary napkin 1 . On the other hand, if the length W2 in the left-right direction of the back waist portion 20b is short, when the tampon 1 is wrapped around the thigh, the tampon 1 (absorbent main body 10) is less likely to hang down, and the tampon 1 can be prevented from coming into contact with the toilet.

Also, when the front waist portion 20f has the incision line 26, a part of the abdominal abutment portion 20fA of the front waist portion 20f is separated from the rear waist portion 20b along the incision line 26, and in the natural state of the sanitary napkin 1, Then the following cases are ideal. In addition, although not shown in the state where the incision line 26 is separated, in the sanitary napkin 1 of FIG. status). In the above-mentioned state, the length W3 from the end P3 on one side of the abdomen-side abutting portion 20fA in the left-right direction to the inner end 40a of the side joint portion 40 on the other side is longer than that from one side of the rear waistline portion 20b in the left-right direction. It is preferable that the length W2 from the end P2 of one side to the inner end 40a of the side joint portion 40 on the other side be longer.

In this way, when the wearer tears the front waist portion 20f at the incision line 26, the length W3 in the left-right direction of the abdominal abutment portion 20fA becomes longer, and when the wearer wraps the waist member 20 around the thigh, it is easy to wrap the waist member 20 around the thigh. The ventral abutting portion 20fA is drawn to the front side of the thigh. On the other hand, the length W2 in the left-right direction of the back waist portion 20b is shortened, and when the tampon 1 is wrapped around the thigh, the tampon 1 is less likely to hang down, and the tampon 1 can be prevented from coming into contact with the toilet.

As shown in FIG. 11 , the sanitary napkin 1 of the present embodiment has the front waist portion 20f and the rear waist portion 20b having the same length in the left-right direction in the unfolded and stretched state. However, in the front waistline part 20f, the length of the left-right direction of the waistline elastic member 24 is shortened compared with the back waistline part 20b. Also, in the front waist portion 20f, low elastic regions 20NA (details will be described later) are provided at both ends in the left and right direction, which are less elastic than the elastic region 20EA in the center in the left and right direction. Therefore, compared with the back waist part 20b, the front waist part 20f has weak contraction force in the left-right direction, and length W1, W3 (contraction dimension) in a natural state becomes short.

In addition, the abdomen side abutting portion 20fA of the front waistline portion 20f is separated from the rear waistline portion 20b along the incision line 26 on one side in the left-right direction, and as shown in FIG. It is desirable that the outer side (one side) of the direction is expanded, and the length in the natural state of the sanitary napkin 1 is the following.

First, as shown in FIG. 18 , it is preferable to set the length W4 from one side end 11a of the front side absorbent core 11 to one side end P1 of the abdominal side contact portion 20fA in the left-right direction to 50 mm or more and 200 mm or less. Then, if the front length W4 is set to be relatively long at 50 mm or more, when the wearer wraps the waist member 20 around the thigh, it is easy to pull the abdomen side contact portion 20fA to the front of the thigh. However, the length W4 of the front side is set at 200 mm or less so as not to be too long, so that the waist member 20 can fit the wearer's waist, and the sanitary napkin 1 can be prevented from falling off.

On the other hand, as shown in FIG. 19 , the length W5 from one side end 11 a of the absorbent core 11 on the rear side in the left-right direction to one side end of the tongue piece 30 opened outward is set at 100 mm or more and 300 mm or less. good. On the other hand, by making the length W5 of the rear side relatively short at 300 mm or less, when the sanitary napkin 1 is wrapped around the thigh, it is possible to prevent the tongue 30 opened outward from coming into contact with the toilet. However, the length W5 of the rear side is set to be 100 mm or more so that the waist member 20 does not tighten the wearer so as not to be too short.

In addition, as shown in FIG. 11 , in the underpants-type absorbent article in the unfolded and stretched state, it is preferable that the maximum length W6 of the tongue piece 30 in the left-right direction is not less than 20 mm and not more than 120 mm. By setting the length W6 of the tongue piece 30 in the left-right direction to 20 mm or more, the wearer can easily hold the tongue piece 30 when engaging the tongue piece 30 with the front waist portion 20f. On the other hand, by setting the length W6 of the left-right direction of the tongue piece 30 to 120 mm or less, when the sanitary napkin 1 is wrapped around the thigh, the tongue piece 30 opened outward can be prevented from coming into contact with the toilet. Also, by making the length W6 of the left-right direction of the tongue piece 30 not too long, after the wearer opens the tongue piece 30 and tears the front waistline portion 20f, there is no need to engage the engaging portion 32 on the front waistline portion easily. 20f and replace the tongue piece 30 at a position close to the engaging portion 32 .

Also, as shown in FIG. 17 , the sanitary napkin 1 in a natural state that is engaged with the non-skin side of the front waistline portion 20 f in a state where the tongue piece 30 joined to the side joint portion 40 is closed toward the inside in the left-right direction is as follows: for the ideal. First, the vertical length L3 of the tongue piece 30 at the position of the inner end 40a of the side joint portion 40 on the side where the tongue piece 30 is provided is larger than that of the front waistline portion 20f at the position of the same side joint portion 40 at the position of the inner end 40a. It is desirable that the length L1 of the up-down direction is longer. In this way, the vertical length of the front waist portion 20f can be shortened so that the wearer can hold it easily. On the other hand, when the wearer holds the tongue piece 30 and pulls up the sanitary napkin 1 from under the thigh, the pulling force is transmitted to the large vertical direction of the rear part of the sanitary napkin 1 by the tongue piece 30 which is long in the vertical direction. range, while easy to pull up.

However, it is desirable that the vertical minimum length L4 of the portion of the front waist portion 20 f overlapping the engaging portion 32 in the left-right direction be longer than the vertical maximum length L5 of the engaging portion 32 . In this way, the entire area in the vertical direction of the engaging portion 32 can be engaged with the front waist portion 20f, and the tongue piece 30 can be firmly engaged with the front waist portion 20f.

Moreover, like the sanitary napkin 1 of this embodiment, the front waist part 20f has the incision line 26 (for example, perforation line) which has length in the up-down direction at the end part of the left-right direction. In this way, the wearer can easily tear the front waist portion 20f.

In addition, although the incision line 26 of this embodiment is provided in the whole area of the up-down direction of the front waistline part 20f, the incision line 26 may be provided in only a part of the up-down direction of the front waistline part 20f. Also, the incision line 26 is not limited to a linear shape along the vertical direction as shown by the stretched sanitary napkin 1 ( FIG. 11 ), but may be a linear or curved shape inclined relative to the vertical direction. In addition, the incision line 26 only needs to be able to easily tear the front waist portion 20f in the vertical direction, and may be provided at the upper end portion, the lower end portion of the front waist portion 20f, and the like.

However, the sanitary napkin 1 may not have the incision line 26 . Even in such a case, the side joining portion 40 can be formed by welding or the like, and has higher rigidity than other regions of the waist member 20 . Therefore, the wearer can tear the front waist portion 20 f along the inner side end 40 a of the side engaging portion 40 in the left-right direction.

Moreover, like the sanitary napkin 1 of the present embodiment, it is desirable to provide a pair of tongue pieces 30 on both sides in the left-right direction of the waist member 20 . In this case, as shown in FIG. 15C and FIG. 16D , the sanitary napkin 1 is worn by wrapping the waist member 20 around both legs. Also, when removing the sanitary napkin 1, the pair of tongue pieces 30 are removed from the front waist portion 20f, and the sanitary napkin 1 can be pulled out from between the thighs. Therefore, when putting on and taking off the sanitary napkin 1 in a shorts-shaped state, it is not necessary to put on and take off the sanitary napkin 1 by passing the toes through the leg opening 1b of the sanitary napkin 1 . Therefore, the wearer can put on and take off the sanitary napkin 1 without taking off pants, shoes, socks, etc., and can easily replace the sanitary napkin 1 even when going out.

Moreover, when the sanitary napkin 1 has the tongue pieces 30 on both sides in the left-right direction, as shown in FIG. When the state separated from the rear waistline part 20b is a natural state, the following cases are preferable. The length W7 from the end P1 on one side of the abdomen side contact portion 20fA in the left-right direction to the end P5 on the other side is longer than the length W7 from the end P2 on one side of the rear waistline portion 20b in the left-right direction to the other side. The length W8 of the end P6 is preferably longer. That is, it is preferable that both ends P1 and P5 in the left-right direction of the abdomen-side contact portion 20fA are located outside in the left-right direction than both ends P2 and P6 in the left-right direction of the rear waistline portion 20b.

In this way, when the waist member 20 is wrapped around not only one thigh but also the opposite thigh, the abdominal contact portion 20fA is easily drawn to the front side of the thigh. On the other hand, when the sanitary napkin 1 is wound around each thigh, the sanitary napkin 1 is less likely to hang down, and it is possible to suppress the sanitary napkin 1 from coming into contact with the toilet.

Moreover, like the sanitary napkin 1 of this embodiment, it is desirable to provide one tongue piece 30 each having one engaging portion 32 on both sides in the left-right direction of the sanitary napkin 1 . In this way, the wearer can easily wear the tongue piece 30 (engagement portion 32 ) by engaging the tongue piece 30 (engagement portion 32 ) once on both sides in the left-right direction, thereby improving wearability. The appearance of the sanitary napkin 1 is also improved. Another example is the sanitary napkin 1 of this embodiment, when the wearer who wears himself or herself is a shorts-type absorbent article, compared with articles for nursing care, the absorbent core 11 is small, and the absorbent core 11 after excretion is also small. light. Therefore, in the sanitary napkin 1 of the present embodiment, such as a shorts-type absorbent article for nursing care, for example, two tongues are arranged in the vertical direction, or two tongues are arranged in the vertical direction and one is engaged. There are two (2 pairs) of tongues on both sides of the left and right direction, even if the tongues are not firmly fixed on the front waistline 20f, there is little concern about the deviation of the sanitary napkin 1 and falling. However, it is not limited to the form in which the tongue piece 30 which has one engaging part 32 is provided in each of both sides of the left-right direction.

Moreover, the sanitary napkin 1 provided with the tongue piece 30 only in one side of the left-right direction of the waist member 20 may be sufficient. That is, the sanitary napkin 1 of the present embodiment only needs to be a pants-type absorbent article that can use at least one side in the left-right direction as an adhesive tape type. At this time, the wearer only puts the toe of one side of the foot through the leg opening 1b, wraps the waist member 20 around the thigh of the other foot, or removes the waist member 20 from the thigh of one side. The sanitary napkin 1 is easily put on and taken off only by pulling out the toe of the other foot from the leg opening 1b. At this time, by shortening the length L1 in the vertical direction of the front waist portion 20f on the side where the tongue piece 30 is provided, the length W1 in the left-right direction of the abdominal side abutting portion 20fA is shortened, so that the waist member 20 is wound around the garment. The wearability of the user's one-side thigh is improved.

Also, as shown in FIG. 11 , in the sanitary napkin 1 in the unfolded and stretched state, one side of the sanitary napkin 1 in the up-down direction (the direction perpendicular to the left-right direction, the direction along the longitudinal direction of the absorbent main body 10) The length L6 from the end to the center CL is ideally not less than 200 mm and not more than 350 mm. By setting length L6 to 200 mm or more, the size of the wearer of the adult sanitary napkin 1 can be adjusted. On the other hand, by setting the length L6 to be 350 mm or less, when the tampon 1 is wrapped around the thigh, the tampon 1 is less likely to hang down, and the tampon 1 can be prevented from coming into contact with the toilet.

Also, the state where the front waist portion 20f is separated from the rear waist portion 20b along the inner end 40a of the side joint portion 40 on one side in the left-right direction or the incision line 26 is in the natural state of the sanitary napkin 1, as shown in FIG. 18 . It is desirable that the lower end portion ( P1 ) be located on one side (outer side) in the left-right direction than the upper end portion ( P4 ) of the abdomen-side contact portion 20fA as shown.

In this case, the cut-off ends ( P1 to P4 ) of the abdominal side contact portion 20fA have a slope inclined outward in the left-right direction from the waist side toward the crotch side. Therefore, in order for the wearer to put on the sanitary napkin 1 by himself, as shown in FIG. 15C , the oblique direction of the hand holding the abdominal abutting portion 20fA from the side of the waist opening 1a and the oblique direction of the cut-off end of the abdominal abutting portion 20fA are adjusted. unanimous. Therefore, the wearer can easily hold the ventral side contact portion 20fA, thereby improving wearability.

In the sanitary napkin 1 (see FIG. 14 ) of this embodiment, a waist elastic member 24 is provided in addition to the stretchable skin-side sheet 22 at the upper end portion of the abdomen side contact portion 20fA. Therefore, the upper end portion of the abdomen side contact portion 20fA has a higher contraction force than the lower end portion, and is located inside in the left-right direction in the natural state of the sanitary napkin 1 . Thus, by increasing the stretchability of the upper end portion of the abdominal contact portion 20fA, the conformability of the tampon 1 to the waist of the wearer is also improved, and the tampon 1 can be suppressed from slipping and falling.

Moreover, the front waistline part 20f and the back waistline part 20b have the skin side sheets 22 and 23 which expand and contract in the left-right direction, and the waist elastic member 24, respectively, and are stretchable in the left-right direction. As shown in FIG. 11 and FIG. 14 , it is desirable that the front waist portion 20f and the rear waist portion 20b continuously have stretchable regions 20EA that expand and contract in the left and right directions at least in the region overlapping the absorbent main body 20 .

In this case, the sanitary napkin 1 fits the wearer's waist. In particular, when the sanitary napkin 1 is used as an adhesive tape type ( FIG. 13B ), although the abdominal abutting portion 20fA of the front waist portion 20f is separated from the rear waist portion 20b, the abdominal portion is held between the pair of tongue pieces 30 . The abutting portion 20fA is pulled toward both outer sides in the left-right direction, so as to be easily fitted to the waist of the wearer. Moreover, when the wearer wraps the waist member 20 around the thigh, it is easy to pull the abdomen side contact portion 20fA to the front side of the thigh, and the front portion of the sanitary napkin 1 is less likely to hang down. Similarly, the rear waist portion 20b can also fit the wearer's waist, and when the wearer wraps the waist member 20 around the thigh, the rear portion of the sanitary napkin 1 is less likely to hang down.

However, in the expansion and contraction area 20EA, the area which overlaps with the absorptive core 11 in the thickness direction reduces expansion-contraction force, and the flatness of the absorptive core 11 can also be ensured. For example, in the region overlapping with the absorbent core 11 in the thickness direction, compared with other regions, the area ratio of the joint portion (welded portion) between the non-skin side sheet 21 and the skin side sheets 22, 23 is increased, and the skin side sheet 22 is suppressed. , 23 elastic properties are also acceptable. In this way, the absorption area of the absorptive core 11 can be ensured, and the occurrence of a gap between the absorptive core 11 and the wearer can be prevented.

Also, the front waist portion 20f preferably has a low-elasticity region 20NA, which is less elastic than the stretchable region 20EA, on the outer side in the left-right direction (the side where the tongue 30 is provided) than the stretchable region 20EA. By providing the low-elasticity region 20NA, when the wearer pulls the front waist portion 20f to the left and right to tear, the force is efficiently transmitted to the breaking portion, so that the tear can be performed with a small force.

Therefore, as shown in FIG. 11, when the sanitary napkin 1 has the incision line 26, it is desirable to arrange the incision line 26 between both side ends of the low elastic area 20NA in the left-right direction. In this case, since both outer sides of the incision line 26 are not easily stretched, the wearer can easily tear the front waist portion 20f along the incision line 26 .

Also, since the front waist portion 20f is torn in the low elastic region 20NA, the shape retention of the cut end of the front waist portion 20f can be ensured so as not to be easily curled. That is, since the end of the ventral abutting portion 20fA on the separated side is less likely to be curled, the wearer can easily hold the ventral abutting portion 20fA and stably engage the tongue piece 30 on the ventral abutting portion. Section 20fA. Also, the end portion of the abdominal abutting portion 20fA and the non-separating portion 20fB on the side joint portion 40 side are less likely to be curled, so the wearer cannot easily remove the front waist portion 20f while wearing the sanitary napkin 1. The end feels like a foreign body, and the feeling of wearing is improved.

In addition, the low-elasticity region 20NA may or may not have stretchability as long as it is lower in stretchability in the left-right direction than the stretchability region 20EA. In the sanitary napkin 1 of this embodiment, stretchable skin-side sheets 22 and 23 are arranged also in the low stretch region 20NA. Therefore, in the low elastic region 20NA, compared with the elastic region 20EA, the area ratio of the joint portion (welded portion) between the non-skin side sheet 21 and the skin side sheets 22, 23 may be increased, and the elastic properties of the skin side sheets 22, 23 may be suppressed. . Also, as shown in FIG. 11 , the elastic portion of the waist elastic member 24 does not extend to the outside in the left-right direction until the low-elasticity region 20NA, thereby reducing the stretchability of the low-elasticity region 20NA.

The stretchability (stretch stress) of the low-elasticity region 20NA and the stretchable region 20EA can be confirmed by stretching each region by humans, or by using a tensile testing machine (for example, an automatic stereogram made by Shimadzu Corporation). Instrument-type tensile testing machine AG-1KN1, etc.) for confirmation. For example, the low elastic region 20NA and the elastic region 20EA are cut out from the front waist portion 20f, and the samples of the low elastic region (20NA) and the elastic region (20EA) having the same length in the lateral and longitudinal directions of the sanitary napkin 1 are produced. Then, the both ends of the sample corresponding to the left-right direction (stretch direction) of the sanitary napkin 1 are clamped with the clips, and the sample is elongated by keeping the distance between the clips apart until the sample breaks. It was confirmed that the sample in the stretch region has a higher stretchability because the distance between the grippers when the sample breaks is longer than that of the sample in the low stretch region.

Also, as shown in FIG. 19 , the abdominal abutting portion 20fA of the front waist portion 20f is separated from the rear waist portion 20b along the incision line 26, and the tongue piece 30 is spread outward (one side) in the left-right direction, and the hygienic It is desirable that the natural state of the cotton 1 is as follows. It is desirable that the non-separated portion 20fB of the front waist portion 20f remaining on the side joint portion 40 side (that is, the portion of the front waist portion 20f separated from the abdominal contact portion 20fA) be located more inside in the left-right direction than the engagement portion 32 .

In this way, the non-separated portion 20fB of the front waist portion 20f will not cover the engaging portion 32, and the tongue piece 30 can be firmly engaged with the abdominal contact portion of the front waist portion 20f through the engaging portion 32. 20fA. Again, when the tongue piece 30 is engaged on the abdomen side abutment portion 20fA, the unevenness of the cut-off end of the non-separation portion 20fB rubs against the non-skin side of the abdomen side abutment portion 20fA, which can restrain the abdomen side abutment portion 20fA against the tongue piece 30. , The position of the rear waist portion 20b is shifted. As a result, it is easy to engage the tongue piece 30 with the ventral side contact portion 20fA, and it is also possible to suppress positional displacement during wearing.

Furthermore, as shown in FIG. 11 , in the sanitary napkin 1 in the unfolded and stretched state, the length W10 from the incision line 26 to the inner (other side) end in the left-right direction of the low-elasticity region 20NA is greater than the length W10 from the end where the tongue piece 30 is joined. It is desirable that the length W9 in the left-right direction from the inner end of the side joint portion 40 on one side (one side in the left-right direction) to the incision line 26 in the left-right direction be longer.

In this way, when the incision line 26 tears the front waist portion 20f, the length W10′ in the left-right direction of the low-elasticity region 20NA in the abdominal contact portion 20fA is longer than the non-separated portion of the front waist portion 20f remaining on the side joint portion 40 side. The length W9' (FIG. 19) of the left-right direction of part 20fB is longer. Therefore, in the state where the tongue piece 30 is engaged with the abdominal abutting portion 20fA, the non-separated portion remaining in the side joint portion 40 can be covered by the end portion (low-elasticity region 20NA) of the abdominal abutting portion 20fA that is not easily curled. 20fB. Therefore, the non-separation portion 20fB is less likely to come into contact with the wearer's skin, and the uncomfortable feeling during wearing can be reduced. In addition, by increasing W10, the length of the non-curling end of the ventral abutment portion 20fA becomes longer, and the wearer can easily hold the ventral abutment portion 20fA and stably engage the tongue piece 30 on the ventral abutment. Connection part 20fA.

Moreover, although the waistline member 20 has stretchability in the left-right direction, the stretchability of the part of the waistline member 20 which overlaps the rigid high absorptive core 11 in the thickness direction falls. As mentioned above, the stretchability of the part of the waist member 20 which overlaps with the absorptive core 11 can also be suppressed intentionally. However, when the engaging portion 32 of the tongue 30 is engaged with the portion of the waist member 20 overlapping with the absorptive core 11 and having reduced stretchability, the degree of fiber entanglement between the engaging portion 32 and the waist member 20 becomes small.

Here, in the unfolded and stretched state of the sanitary napkin 1 , the vertical length L6 (see FIG. 14 ) from the upper end of the front waist portion 20 f to the upper end of the front side of the absorbent core 11 is greater than the vertical length of the engaging portion 32 . Longer L8 is ideal.

In this way, when engaging the tongue piece 30 with 20 f of front waistline parts, the engaging part 32 and the absorptive core 11 deviate easily in the up-down direction, and are hard to overlap in the thickness direction. That is, the engaging part 32 is engaged with the part of the front waistline part 20f which does not overlap with the absorptive core 11 in the thickness direction, and does not fall in stretchability. Therefore, the hook material of the engaging part 32 is easily entangled with the fibers of the waist member 20, and the engaging strength of the tongue piece 30 can be improved.

On the other hand, in the unfolded and stretched state of the sanitary napkin 1, the vertical length L7 (see FIG. 14 ) from the upper end of the rear waistline portion 20b to the rear upper end of the absorptive core 11 is larger than the vertical length of the engaging portion 32. It is desirable that the length L8 of the direction is shorter.

Since the absorptive core 11 on the rear side is long extended upward, the rigidity of the upper end part of the rear waistline part 20b improves. Therefore, when the wearer wraps the waist member 20 around the thigh, the rear waist portion 20b is less likely to hang down, and the sanitary napkin 1 can be prevented from coming into contact with the toilet. In addition, back leakage of excrement can also be suppressed. Moreover, since the tongue piece 30 (engagement part 32) is not engaged with the rear waistline part 20b, even if the absorbent core 11 on the rear side extends upward, the engagement strength of the engagement part 32 becomes weak. The problem doesn't happen.

Also, as shown in FIG. 17 , the sanitary napkin 1 in a natural state that is engaged with the non-skin side of the front waistline portion 20 f in a state where the tongue piece 30 joined to the side joint portion 40 is unfolded toward the inside in the left-right direction is engaged. It is desirable that the part 32 is positioned on the outer side (one side) in the left-right direction than the absorptive core 11 .

In this way, the engaging part 32 is easy to engage with the part of the front waistline part 20f which does not overlap with the absorptive core 11 in the thickness direction, and does not fall in stretchability. Therefore, the hook material of the engaging part 32 is easily entangled with the fibers of the waist member 20, and the engaging strength of the tongue piece 30 can be improved.

Also, in the state where the tongue piece 30 is closed toward the inside in the left-right direction (refer to FIG. 17 ), at least one of the upper end and the lower end of the tongue piece 30 (in this embodiment, both the upper end and the lower end) has The shape of the inclination part 30A which inclines toward the center of the up-down direction of the tongue piece 30 toward the inner side of a direction is preferable. That is, the free end portion of the tongue piece 30 on the opposite side to the side where the side engaging portion 40 is engaged may be tapered.

In this way, the wearer can easily hold the free end portion of the tongue piece 30 (the end portion on the opposite side to the side joined to the side engaging portion 40 ). Also, when breathing, the upper end of the tongue 30 is less likely to contact the wearer's abdomen, and when the foot is lifted, the lower end of the tongue 30 is less likely to contact the wearer's foot. Therefore, when wearing the sanitary napkin 1 , the wearer hardly feels that the tongue piece 30 is a foreign object, and the feeling of wearing is improved.

In addition, in the sanitary napkin 1 of this embodiment, the color of the non-skin side of the front waistline portion 20f (whole) and the color of the non-skin side of the tongue piece 30 (whole) are set in the same color system. For example, in a nursing diaper different from the sanitary napkin 1 of this embodiment, blue and green engaging parts are provided on the white tongue, and the color of the engaging part is seen through from the outside of the diaper. The tongue and the non-skin side often have different colors. Therefore, as in the sanitary napkin 1 of this embodiment, by setting the color of the front waistline part and the non-skin side of the tongue into the same color system, the shape like a paper diaper is reduced and the appearance of the sanitary napkin 1 is improved.

However, in the above-mentioned case, it is difficult for the wearer to grasp the position of the engaging portion 32 from the non-skin surface side of the sanitary napkin 1 . Here, the tongue piece 30 preferably has a plurality of pressing portions 33 that press the tongue piece 30 in the thickness direction in the region where the engaging portion 32 is arranged. In this way, the position of the engaging portion 32 can be easily recognized from the non-skin surface side of the tongue piece 30, and the tongue piece 30 can be easily engaged with the front waistline portion 20f, thereby improving the wearability of the sanitary napkin 1 . In addition, the pressing part 33 can also be pressed from the skin side of the tongue piece 30, and can also be pressed from the non-skin side.

Also, the engaging portion 32 is often bonded to the base sheet 31 constituting the tongue 30 with an adhesive, but the pressing portion 33 increases the bonding strength between the tongue 30 and the engaging portion 32 . Therefore, the engaging portion 32 does not fall off from the tongue piece 30, and the tongue piece 30 can be reinstalled. In addition, it is also possible to prevent the tongue piece 30 from coming off during wearing of the sanitary napkin 1 .

However, the plurality of pressing parts 33 provided on the tongue piece 30 are set at a more average pitch (at least in the vertical direction and the left-right direction) than the plurality of joint parts (such as welded parts not shown) provided in the side joint part 40 . The average spacing in one direction) is better. By increasing the average pitch of the pressing part 33 and suppressing the area ratio of the pressing part 33 , the hook material of the engaging part 32 can be prevented from being crushed in the pressing part 33 . On the other hand, by reducing the average pitch of the joints constituting the side joints 40 , the joint strength of the side joints 40 is increased. Therefore, even if the wearer pulls the tongue piece 30 at the time of wearing the tampon 1, it can prevent that the tongue piece 30 falls off from the rear waistline part 20b.

In addition, the same color system means that in the Mansell table color system (100 hues), the hue is less than 5, the lightness is less than 1, or the chroma is less than 1 and is separated, and the same color is included. The ideal color difference ΔE is preferably less than 1. Color difference is measured in the following manner. (1) X-Rite eXact Standerd (measurement diameter: 1.5 mm) manufactured by X-Rite Corporation was prepared. (2) Change the position and measure more than 10 points of the CIE L*a*b* coordinates of the part to be measured (the non-skin side of the front waistline portion 20f) of the sample, and calculate the average value (L1*, a1*, b1 *). (3) Measure more than 10 points of the CIE L*a*b* coordinates of the corresponding part of the sample (the non-skin side of the tongue 30) by changing the position, and calculate the average value (L2*, a2*, b2 *). (4) Calculate the color difference ΔE from the above results (ΔE=[(L1*-L2*) ² +(a1*-a2*) ² +(b1*-b2*) ² ] ^1/2

===Others=== For example, in the aforementioned embodiment, by arranging the elastic skin-side sheets 22 and 23 on the waist member 20, the waist member 20 is provided with stretchability in the left-right direction. Instead of a stretchable sheet, stretchability may be imparted to the waist member 20 by arranging plural filamentary elastic members (thread rubber, etc.) stretchable in the left-right direction at intervals in the vertical direction.

Also, it is not limited to satisfying that the minimum length L1 in the vertical direction of the front waist portion 20f overlapping with the tongue piece 30 is set at 80 mm to 150 mm, and the vertical length L2 of the side joint portion 40 is set at 100 mm to 160 mm; and When the side joint portion 40 tears the front waist portion 20f, the abdominal contact portion 20fA of the front waist portion 20f is longer than the length of the rear waist portion 20b in the left-right direction (W1>W2), as long as at least one of the conditions is satisfied. Shorts-type absorbent articles are sufficient.

＜<<About sanitary napkin 1 of the third embodiment＞＞＞ FIG. 21 is a developed plan view of the sanitary napkin 1 in a state where the front waist portion 20f is separated from the rear waist portion 20b along the incision line 26 . Fig. 22 is a front view of the underpants type sanitary napkin 1 seen from the front side. FIG. 23 is a front view of a state in which the sanitary napkin 1 is held so that the longitudinal centerline CL1 along the engaging portion 32 is horizontal. Fig. 24 is a front view of a state in which the sanitary napkin 1 of the modified example is held in the same manner as in Fig. 23 .

As described above, the sanitary napkin 1 of the third embodiment has the tongue piece 30 detachably engaged with the front waist portion 20f. Therefore, when the wearer uses the sanitary napkin 1 as an adhesive tape, the tongue piece 30 can be engaged with the front waist portion 20f while seeing the tongue piece 30 from the front side of the wearer. Therefore, wearability when the wearer himself wears the sanitary napkin 1 is good. Moreover, even when detaching the sanitary napkin 1, the wearer can detach the tongue 30 from the front waist portion 20f while seeing the tongue 30 from the front side of the wearer.

In addition, in the sanitary napkin 1 of this embodiment, the tongue piece 30 is provided on the non-skin side (outer side) than the waistline member 20, and the engaging portion 32 provided on the skin side of the tongue piece 30 is engaged with the front waistline portion 20f. Non-skin side. But it is not limited to this, and the tongue 30 can also be provided on the skin side (inside) of the waist member 20. After the waist member 20 is separated, the engaging portion 32 provided on the non-skin side of the tongue 30 becomes engaged with the front waist portion. The shape of the skin side of 20f.

Again, when wearing the sanitary napkin 1 in the underpants-shaped state, though the sanitary napkin 1 can also be taken off under the shorts-shaped state, the sanitary napkin 1 can also be removed by tearing the front waist portion 20f at the incision line 26. On the contrary, when the sanitary napkin 1 is worn in the adhesive tape type state, the sanitary napkin 1 can be taken off without removing the tongue piece 30 .

Moreover, like the sanitary napkin 1 of this embodiment, the front waist part 20f has the incision line 26 (for example, perforation line) which has length in the longitudinal direction at the edge part of the width direction. In this way, the wearer can easily tear the front waist portion 20f.

In addition, although the incision line 26 of this embodiment is provided in the whole area of the longitudinal direction of the front waistline part 20f, the incision line 26 may be provided in only a part of the longitudinal direction of the front waistline part 20f. In addition, the incision line 26 is not limited to a linear shape along the longitudinal direction as shown in the stretched sanitary napkin 1 ( FIG. 11 ), but may be a linear or curved shape inclined relative to the longitudinal direction. Moreover, the incision line 26 only needs to be able to easily tear the front waist portion 20f in the longitudinal direction, and may be provided at the end of the front waist portion 20f on the waist side, the notch at the end of the crotch side, or the like.

However, the sanitary napkin 1 may not have the incision line 26 . Even in such a case, the side joint portion 40 can be formed by welding or the like, and has higher rigidity than other regions of the waist member 20 . Therefore, the wearer can tear the front waist portion 20f along the widthwise inner side end 40a of the side engaging portion 40 .

In addition, in the initial state of taking out the sanitary napkin 1 from the packaging bag, it is desirable that the tongue piece 30 is visible from the non-skin surface side (outside) of the sanitary napkin 1 . For example, as in the sanitary napkin 1 of the present embodiment, when the front waist portion 20f has the incision line 26, the front waist portion 20f can be cut from the non-skin surface side of the front waist portion 20f without tearing the front waist portion 20f longitudinally along the incision line 26. It is ideal to recognize the tongue 30.

In this way, the wearer can easily recognize whether the sanitary napkin 1 can be used as a shorts type or an adhesive tape type. Therefore, the wearer of the sanitary napkin 1 can put on and take off the sanitary napkin 1 directly in a shorts-type state according to the current situation, or make it into an adhesive tape type to put on and take off the sanitary napkin 1, so that the ease of putting on and taking off the sanitary napkin 1 is improved. .

Also, when the wearer wears the sanitary napkin 1 in the form of an adhesive tape, as shown in Fig. 15C and Fig. 16A, it is assumed that the waist member 20 cut off at the incision line 26 etc. is wrapped around the thigh, while the waist member 20 is wrapped around the thigh. The method of snapping tongue piece 30 up. In this way, the tongue piece 30 (engaging portion 32 ) can be stably engaged with the front waist portion 20f.

However, when the wearer sits on the toilet or stands bent over near the toilet and wraps the sanitary napkin 1 around one thigh, the sanitary napkin 1 is easy to wear as shown in FIG. 16B . hang down. Especially, the absorptive core 11 which occupies most of the weight of the sanitary napkin 1 hangs down easily from a thigh. If the portion of the sanitary napkin 1 hanging down from the thigh comes into contact with the toilet, the hygienic state of wearing the sanitary napkin 1 will deteriorate.

Here, in the sanitary napkin 1 of the present embodiment, the center 32a in the width direction of the longitudinal waistline side (one side) end of the engaging portion 32 of the connecting tongue 30 and the longitudinal direction of the engaging portion 32 are connected. The center line CL1 (see FIG. 21 and FIG. 22 ) of the center 32b in the width direction of the end of the crotch side (the other side) becomes horizontal. It is positioned above the lowermost end 1L of the sanitary napkin 1 (product).

As shown in Fig. 23, in a state close to the state where the sanitary napkin 1 is wrapped around the thigh, the absorbent core 11, which occupies most of the weight of the sanitary napkin 1, is located on the upper side than the lowermost end of the sanitary napkin 1, which means that it is related to the absorbency. Compared with the case where the lowermost end of the core 11 becomes the lowermost end of the product, it can be said that the absorptive core 11 does not hang down. Therefore, when the waist member 20 is wrapped around the thigh (FIG. 16B), it is possible to suppress the sanitary napkin 1 from coming into contact with the toilet.

As a result, the hygienic state of the sanitary napkin 1 can be maintained well. Furthermore, since the sanitary napkin 1 is difficult to touch the toilet, the wearer can concentrate on wrapping the waist member 20 around the thighs, thereby improving the wearability of the sanitary napkin 1 . Also, after the wearer engages the tongue piece 30 on the front waistline portion 20f, rotates the sanitary napkin 1 along the circumferential direction of the thigh, and as shown in FIG. 16C, pulls the absorbent core 11 (absorbent main body 10) to between the thighs. Therefore, since there is little hanging of the absorptive core 11, the pulling-up operation|movement of the absorptive core 11 also becomes easy.

Moreover, the sanitary napkin 1 of the underpants type state which did not separate the waist member 20 at the incision line 26 etc. was hold|maintained and observed as FIG. 23. Moreover, the sanitary napkin 1 is held horizontally with the center line CL1 of the engaging part 32 in the tongue piece 30 of the initial state after taking out from a package. The initial state of the sanitary napkin 1 of this embodiment after it is taken out of the package is the state of FIG. 22 . Therefore, the tongue piece 30 is engaged with the front waistline portion 20f in a state where it is unfolded from the position (side joint portion 40 ) joined to the waist member 20 toward the inside in the width direction, and the engaging portion at the position of the tongue piece 30 The sanitary napkin 1 is held in such a way that the central line CL1 of 32 is horizontal. On the other hand, the initial state after taking out from the package is not the state of FIG. 22, for example, the tongue 30 (engagement portion 32) is a folded state, then the engagement portion in the position of the folded tongue 30 The center line CL1 of 32 (the center line CL1 of the engaging part 32 in the folded state where the engaging part 32 is also in the folded state) holds the sanitary napkin 1 horizontally.

Also, in order to keep the sanitary napkin 1 in such a way that the centerline CL1 of the engaging portion 32 is horizontal, a metal ruler based on JIS Class 1 (such as a silver ruler (length 335mm or 500mm, length 335mm or 500mm, 25mm in width, 1mm in thickness), or the equivalent). Specifically, first, the plane of the gauge 51 is touched on the horizontal workbench 50, and the gauge 51 is protruded from the workbench 50 by 200 mm. Next, the leg opening 1b and the waist opening 1a of the sanitary napkin 1 are passed through the ruler 51 . Then, align the waist opening end of the sanitary napkin 1 with the position 50 mm inside (the side of the working platform 50 ) from the end of the protruding ruler 51 . Moreover, the center line CL1 of the longitudinal direction of the engaging part 32 of the sanitary napkin 1 and the center position of the width (25mm) of the ruler 51 were aligned. Then, the state of the sanitary napkin 1 hanging down from the ruler 51 is observed (for example, the positions of the lowermost ends of the absorbent core 11 and the sanitary napkin 1 are compared). In addition, what is necessary is just to fix the workbench 50 and the ruler 51, or to fix the ruler 51 and the sanitary napkin 1 using double-sided tape etc. Also, when the gauge 51 is bent due to the weight of the underpants-type absorbent article, 2 to 3 pieces of the gauge 51 may be stacked in the thickness direction to hold the underpants-type absorbent article. Alternatively, the length of the ruler 51 protruding from the workbench 50 is shortened. The following measurements and comparisons are performed in the same manner. In addition, the measurement and comparison of the sanitary napkin 1 in the state of FIG. 23 may be performed on the actual sanitary napkin 1, or may be performed based on an image of the sanitary napkin 1 in the state of FIG. 23 captured from the front side.

In the following description, the part of the absorbent core 11 located on the front side than the folded part F (the end on the crotch side in the longitudinal direction) of the sanitary napkin 1 is also referred to as "the front side absorbent core 11F", and also referred to as The part where the double folded part F is located in the back side absorptive core 11 is called "back side absorptive core 11B". Similarly, the portion of the absorbent main body 10 located on the front side of the folded portion F of the sanitary napkin 1 is also referred to as “the front absorbent main body 10F”, and the portion of the absorbent main body 10 located on the rear side relative to the folded portion F is referred to as “absorbent main body 10F”; "Absorptive main body 10B on the rear side".

Moreover, the sanitary napkin 1 of this embodiment is as follows when holding the sanitary napkin 1 so that the center line CL1 of the engaging part 32 becomes horizontal (FIG. 23). First, the horizontal line LH (horizontal position in the vertical direction) at the point P1 passing through the side end 11SU located on the upper side among the both ends in the width direction of the absorbent core 11F on the front side and the folded portion F of the sanitary napkin 1 passes. The length L4 in the vertical direction (vertical direction) from the horizontal line LH to the lowermost end 1L of the sanitary napkin 1 is shorter than the vertical length L3 from the horizontal line LH to the uppermost end 1U of the sanitary napkin (that is, the top of the ruler 51) .

The position of the horizontal line LH roughly corresponds to the position of the underside of the thigh around which the waist member 20 is wrapped. Therefore, shortening the length L4 in the vertical direction from the horizontal line LH to the lowermost end 1L of the tampon 1 can reduce the amount of sagging of the tampon 1 when the waist member 20 is wrapped around the thigh. Specifically, in the sanitary napkin 1 held as shown in Figure 23, the lowermost end of the absorbent core can be shortened in length L4 compared with the absorbent article that becomes the lowermost end of the product, and the time when the waist member 20 is wrapped around the thigh can be reduced. Amount of sagging of sanitary napkin 1. Therefore, the sanitary napkin 1 can be suppressed from coming into contact with the toilet.

In addition, the following methods can be mentioned as a method of measuring the above-mentioned lengths L3 and L4. First, marks are made with a pen on the non-skin side of the front side of the sanitary napkin 1 in a natural state (for example, the sanitary napkin 1 in an unloaded state placed flat on a horizontal table) shown in FIG. 22 . That is, the mark is marked at the position of the intersection point P1 of the folded part F of the tampon 1 and the side end 11SU of the absorptive core 11 on the side holding the engaging part 32 horizontally. Next, a horizontal line LH passing through the intersection P1 is marked with a pen on the sanitary napkin 1 in the state shown in FIG. 23 . Then, lengths L3 and L4 from horizontal line LH to uppermost end 1U and lowermost end 1L of sanitary napkin 1 are measured using a ruler or the like. Alternatively, the lengths L3 and L4 may be compared by specifying the horizontal line LH on the image data of the tampon 1 photographed from the front in the state shown in FIG. 23 .

Also, in the sanitary napkin 1 ( FIG. 22 ) in a natural state, the front absorbent main body 10F has: the first center C1 as the center of the width direction at the end of the longitudinal waistline side (one side); The second center C2 of the center in the width direction of the central line of the sex main body 10F bisected, and the third center C3 of the center of the width direction of the end of the crotch side (the other side) in the longitudinal direction.

When the sanitary napkin 1 of this embodiment is held so that the centerline CL1 of the engaging portion 32 is horizontal ( FIG. 23 ), the level of the line La connecting the first center C1 and the second center C2 The inclination of the direction is the same as the inclination of the horizontal direction with respect to the line Lb connecting the second center C2 and the third center C3. It should be noted that the inclinations in the horizontal direction with respect to the line La and the line Lb are the same, as long as they are substantially the same, and it is the same when there is an error in the inclination of about 0 to 5 degrees or less.

The inclination of the horizontal direction with respect to the line La and the line Lb is the same, and the line La and the line Lb are located on the same line, which refers to the position on the waistline side in the longitudinal direction of the absorbent main body 10 (in the range of C1 to C2). part), and the part on the crotch side (the part in the range of C2~C3) is not inclined. That is, even if the sanitary napkin 1 is in the state of FIG. 23 , the absorbent main body 10 does not bend halfway in the longitudinal direction, and the crotch side of the absorbent main body 10 does not hang down. Therefore, when the waist member 20 is wrapped around the thigh, it is possible to prevent the sanitary napkin 1 from coming into contact with the toilet.

In addition, the following method can be mentioned as a method of confirming the inclination of the line La and the line Lb. First, marks are made with a pen at the positions of the first center C1 to the third center C3 with respect to the non-skin side of the front side of the sanitary napkin 1 in the natural state shown in FIG. 22 . Next, the line La connecting the first center C1 and the second center C2 and the line Lb connecting the second center C2 and the third center C3 are marked with a pen on the sanitary napkin 1 in the state of FIG. 23 . Then, the inclination in the horizontal direction with respect to the line La and the line Lb is confirmed using a ruler or the like. Alternatively, it is also possible to specify the line La and the line Lb on the image data of the tampon 1 photographed from the front in the state of FIG. 23 and compare the inclinations.

Also, when the sanitary napkin 1 held horizontally by the center line CL1 of the engaging portion 32 is viewed from the front side, as shown in FIG. It is sufficient that the side end 10SL on the side is more on the lower side (that is, from the lower leg opening 1b ) to see the skin side of the absorbent main body 10 on the rear side. For example, the stretchability in the width direction of the rear waist portion 20b is reduced while engaging the tongue piece 30 at a position inside the width direction of the front waist portion 20f.

In this way, when the waist member 20 is wound around the thigh, since the front absorbent main body 10F is located on the upper side, the sanitary napkin 1 is rotated along the circumferential direction of the thigh. The action of pulling the absorbent body 10 between the thighs is facilitated. That is, the amount that the wearer pulls up the both sides in the width direction of the front side absorbent main body 10F is reduced, and it is easy to move to the next action.

However, contrary to FIG. 23 , as shown in the modified example of FIG. 24 , when the sanitary napkin 1 held horizontally with the center line CL1 of the engaging portion 32 is viewed from the front side, a portion of the absorbent main body 10 in the width direction is compared. The upper side end 10SU of the pair of side ends is further upside (that is, from the upper side leg opening 1b), and the skin side of the rear side absorbent main body 10 can also be seen. For example, the stretchability in the width direction of the rear waist portion 20b is improved while engaging the tongue piece 30 at a position outside the width direction of the front waist portion 20f.

When the waist member 20 is wrapped around the thighs, the rear portion of the sanitary napkin 1 is more likely to be located near the toilet than the front portion, and is wound under the thighs. Therefore, the back part of the tampon 1 can be further suppressed from coming into contact with the toilet by placing the rear absorbent main body 10B on the upper side as described above.

Moreover, compared with the case of FIG. 24 and the case of FIG. 23, the inclination of the front side absorptive main body 10F with respect to the horizontal direction is small. Therefore, when the wearer pulls the front absorbent main body 10F between the thighs (FIG. 16C), the front absorbent main body 10F has a small inclination relative to the direction in which the thighs extend, and the front absorbent main body 10F is positioned action becomes easier.

Furthermore, when the sanitary napkin 1 is held in such a way that the centerline CL1 of the engaging portion 32 is horizontal ( FIG. 23 ), the lower tongue of the position opposite to the engaging portion 32 ( 32A) in the width direction It is preferable that the engagement part 32 (32B) of the sheet|seat 30 (another engagement member) is located above the lowermost end 1L of the sanitary napkin 1. As shown in FIG.

In this way, when the wearer wraps the waist member 20 around the thighs, the opposite tongue piece 30 (engagement portion 32B) can be easily seen from between the thighs. Therefore, the wearer easily realizes that the tearing operation will be performed by opening the tongue 30 on the opposite side next, and it is easy to move to the next operation.

When the sanitary napkin 1 is held in such a way that the center line CL1 of the engaging portion 32 is horizontal ( FIG. 23 ), with respect to the vertical line LV passing through the end 32Aa of the waistline side in the longitudinal direction of the engaging portion 32 ( 32A), At least a part of the engaging portion 32 ( 32B) of the lower tongue piece 30 only needs to be located on the waistline side.

In this way, when the wearer wraps the waist member 20 around the thigh, the opposite tongue piece 30 (engagement portion 32B) is positioned near the wearer. Therefore, even if the wearer does not take the posture of bending the upper body forward, the wearer can find the tongue 30 (engagement portion 32B) on the opposite side by looking down, and can move to the next movement easily.

Also, in the above-mentioned method of wearing the sanitary napkin 1, although the waist member 20 is wrapped around the thigh, and the sanitary napkin 1 is pulled up as shown in FIG. 16C, the tongue 30 on the opposite side is opened, and the The method of the front waist part 20f is demonstrated, but it is not limited to this. For example, as shown in FIG. 16B , grasp the tongue 30 from under the thigh on the opposite side, open the tongue 30 under the thigh, and tear the front waistline 20f. At this time, the torn part of the front waistline 20f can be wrapped around the thigh directly from below. At this time, as described above, since the tongue 30 (engaging portion 32B) on the opposite side is located near the wearer, the wearer can easily grasp the tongue 30 from under the thigh.

In addition, although the sanitary napkin 1 of this embodiment is a shorts-type absorbent article for adults (including elementary and junior high school students who have just menstruated), the volume of the absorbent core 11 is relatively small. Strictly speaking, the volume of the portion of the sanitary napkin 1 where the absorptive core 11 is arranged is relatively small, and is not less than 100 cm ³ and not more than 250 cm ³ .

The volume of the part of the sanitary napkin 1 where the absorbent core 11 is placed is obtained by combining the "longitudinal length of the absorbent core 11", the "width of the absorbent core 11", and "the sanitary napkin with the absorbent core 11 placed". 1 (the thickness of the top sheet 11 to the non-skin side sheet 21 in FIG. 12 )" to obtain. However, the thickness of the sheet overlapping the absorptive core 11 is smaller than the thickness of the absorptive core 11 . Therefore, since the volume of the portion of the sanitary napkin 1 on which the absorbent core 11 is disposed is close to the volume of the absorbent core 11, in this specification, the volume of the portion of the sanitary napkin 1 on which the absorbent core 11 is disposed is simply referred to as "Volume of the absorbent core 11".

By reducing the volume of the absorbent core 11 to 250 cm ³ or less, the mass and size (length, width, thickness, etc.) of the absorbent core 11 can be reduced. Therefore, when the wearer wears the sanitary napkin 1 as an adhesive tape type, when the waist member 20 is wrapped around the thigh, the absorbent core 11, which occupies most of the mass of the sanitary napkin 1, is not easy to hang down, and the sanitary napkin 1 can be suppressed. touches the toilet. Therefore, the hygienic state of the tampon 1 can be maintained favorably, and wearability is also improved. In the case of a shorts-type absorbent article for adults (such as the sanitary napkin 1 of this embodiment, light incontinence diapers, etc.) for the wearer who wears himself or herself, compared with a shorts-type absorbent article for nursing care, excretion Small quantity. Therefore, even if the volume of the absorptive core 11 is 100 cm ³ or more and 250 cm ³ or less, leakage of excretion can be suppressed.

Specifically, the width of the absorptive core 11 is preferably not less than 50 mm and less than 100 mm. By making the width of the absorptive core 11 less than 100 mm, the volume of the absorptive core 11 can be reduced as mentioned above. Moreover, position 11L (refer FIG. 24) of the lowest end of the absorptive core 11 at the time of wrapping the waistline member 20 around a thigh can be located upward. Therefore, the sanitary napkin 1 can be suppressed from coming into contact with the toilet. On the other hand, by setting the width of the absorptive core 11 to 50 mm or more, a sense of security can be given to the wearer, and side leakage of excretion can also be suppressed.

In addition, the thickness of the sanitary napkin 1 at the portion where the absorbent core 11 is placed in the pants-type absorbent article in the unfolded and stretched state, that is, the total thickness of the absorbent core 11 and the sheets placed overlapping the absorbent core 11 Less than 5.5mm is ideal. However, since the thickness of the sheet overlapping the absorbent core 11 is smaller than the thickness of the absorbent core 11 similarly to the volume of the absorbent core 11, only the portion where the absorbent core 11 is disposed is included in this specification. The thickness of the sanitary napkin 1 is referred to as "thickness of the absorbent core 11".

By setting the thickness of the absorbent core 11 to be less than 5.5 mm, the volume of the absorbent core 11 can be reduced as described above, and since the swelling of the sanitary napkin 1 in the front-back direction can be suppressed, it is possible to suppress the contact of the sanitary napkin 1. to the toilet.

Moreover, it is preferable that the mass of the absorptive core 11 is 10 g or more and 40 g or less. By setting the mass of the absorptive core 11 to 40 g or less, the absorptive core 11 can be suppressed from hanging down when the waist circumference member 20 is wrapped around the thigh, and the sanitary napkin 1 can be suppressed from coming into contact with the toilet. On the other hand, by setting the mass of the absorptive core 11 to 10 g or more, leakage of excretion can be suppressed.

The method of measuring the volume, width, thickness, and mass of the absorptive core 11 will be described below. (1) As shown in FIG. 11 , the sanitary napkin 1 is unfolded and stretched without wrinkles, and the maximum length in the longitudinal direction (longitudinal direction of the sanitary napkin 1 ) is measured while the absorptive core 11 is unfolded flat. (2) Next, the absorptive core 11 is divided into three equal regions R1 to R3 in the longitudinal direction region (see FIG. 21 ). Then, the width W1-W3 of the absorptive core 11 in the center position of the longitudinal direction of each region R1-R3 is measured. Let the average value of the three width W1-W3 be the width W of the absorptive core 11. The width W thereof is preferably not less than 50 mm and less than 100 mm. (3) Next, thicknesses t1 to t3 of the absorptive core 11 are measured in each center (the center of the longitudinal direction and the width direction) of the regions R1 to R3 that divide the absorptive core 11 into three equal parts in the longitudinal direction. Let the average value of the three thicknesses t1-t3 be the thickness t of the absorptive core 11 (thickness of the sanitary napkin 1 in the place where the absorptive core 11 is arrange|positioned). The thickness t is preferably less than 5.5 mm. (4) Then, a value obtained by multiplying the length of the absorptive core 11 by the width W and the thickness t is defined as the volume of the absorptive core 11 (the volume of the portion of the sanitary napkin 1 where the absorptive core 11 is placed). Its volume is preferably not less than 100 cm ³ and not more than 250 cm ³ . (5) The measurement of mass is carried out after measuring the above dimensions. First, the materials constituting the sanitary napkin 1 are separated using toluene, and the absorbent core 11 (including the core wrap sheet) is taken out. After the separated absorbent core 11 was naturally dried for 24 hours, the mass of the absorbent core 11 (pulp fiber, SAP, core covering sheet, etc.) was measured. Also, its mass is preferably not less than 10 g and not more than 40 g.

Furthermore, in order to suppress the sagging of the absorptive core 11, it is preferable that the thickness of the side edge of the width direction of the absorptive core 11 in the folded part F of the sanitary napkin 1 is thin especially. Specifically, the thickness of the side edges in the width direction in the folded portion F of the absorptive core 11 is thinner than the thickness of the absorptive core 11 measured by the above-mentioned measuring method (that is, the thickness of the central portion in the width direction), That is, 4 mm or less is preferable. In addition, the thickness of the side edge of the absorptive core 11 was measured by the method similar to the said measurement method, changing a measurement point. Moreover, the thickness of two places (left and right side edges) was measured for every 1 sanitary napkin 1, and the average value was made into the thickness of the side edge of the absorptive core 11.

In addition, the thickness of the absorptive core 11 is exemplified by using a dial-type thickness gauge ID-C1012C manufactured by Mitutoyo Co., Ltd. or its equivalent, and measuring the target site with a pressure of, for example, 3.0 gf/cm ² value.

Moreover, the measurement of the volume of the absorptive core 11, width, thickness, and mass is measured about several (for example, 5) sanitary napkins 1, and it is desirable to confirm that the average value is included in the said range. The sanitary napkins 1 to be measured are preferably sanitary napkins contained in the same package, but may be sanitary napkins contained in the same corrugated cardboard box or sanitary napkins with the same manufacturing date.

Also, as shown in FIG. 11 , in the unfolded and stretched sanitary napkin 1, one side of the sanitary napkin 1 in the longitudinal direction (direction perpendicular to the width direction, along the longitudinal direction of the absorbent main body 10) The length L6 from the end to the center CL is preferably not less than 200 mm and not more than 350 mm. By setting the length L6 to 350 mm or less, the length of the portion of the sanitary napkin 1 extending from the waist member 20 toward the crotch side is moderately reduced, so that the sanitary napkin 1 is less likely to hang down when the waist member 20 is wrapped around the thigh. , can prevent the sanitary napkin 1 from touching the toilet. On the other hand, by setting the length L6 at 200 mm or more, it becomes a size fit for an adult.

Moreover, as shown in FIG. 11, the width of the absorbent core 11 is narrower than that of the absorbent main body 10, and it is desirable that the absorbent main body 10 has a region where the absorbent core 11 does not exist on the lateral side of the absorbent main body 10.

In this case, the rigidity of the side portions in the width direction of the absorptive main body 10 becomes low. Therefore, after the waist member 20 is wrapped around the thigh, when the wearer rotates the waist member 20 and pulls up the absorbent main body 10, the side portion of the absorbent main body 10 is easy to rotate the waistline along the circumference of the wearer's thigh. Component 20. Therefore, the wearability of the sanitary napkin 1 improves.

Moreover, it is preferable that the sanitary napkin 1 according to this embodiment is provided with a pair of tongue pieces 30 on both sides in the width direction of the waist member 20 . In this case, as shown in FIG. 15C and FIG. 16D , the sanitary napkin 1 is worn by wrapping the waist member 20 around both legs. Also, when removing the sanitary napkin 1, the pair of tongue pieces 30 are removed from the front waist portion 20f, and the sanitary napkin 1 can be pulled out from between the thighs. Therefore, when putting on and taking off the sanitary napkin 1 in a shorts-shaped state, it is not necessary to put on and take off the sanitary napkin 1 by passing the toes through the leg opening 1b of the sanitary napkin 1 . Therefore, the wearer can put on and take off the sanitary napkin 1 without taking off pants, shoes, socks, etc., and can easily replace the sanitary napkin 1 even when going out.

Also, as the sanitary napkin 1 of the present embodiment, one tongue piece 30 (engagement member) having one engaging portion 32 is provided on one side in the width direction of the waist member 20, and on the width direction of the waist member 20, It is desirable to provide one tongue piece 30 (another engaging member) having one engaging portion 32 on the other side. That is, it is desirable to provide one tongue piece 30 on both sides in the width direction of the sanitary napkin 1 .

In this case, the wearer only needs to engage the tongue piece 30 (engagement portion 32 ) once on both sides in the width direction, and it can be easily worn. The appearance of the sanitary napkin 1 is also improved. Also like the sanitary napkin 1 of this embodiment, in the case of a pants-type absorbent article intended for wearers who wear it by themselves, the amount of excretion is small, and the absorbent core 11 after excretion is also light. Therefore, in the sanitary napkin 1 of the present embodiment, such as a shorts-type absorbent article for nursing care, for example, tongues with two engaging parts arranged in a vertical direction, or two tongues with one engaging part arranged in a vertical direction Even if the tongue is not firmly fixed to the front waist portion 20f, there is little concern that the tampon 1 will be shifted and dropped.

However, the number of engaging portions 32 and tongue pieces 30 is not limited to one on both sides in the width direction. Moreover, the sanitary napkin 1 provided with the tongue piece 30 only on one side of the width direction of the waist member 20 may be sufficient. That is, the sanitary napkin 1 of the present embodiment only needs to be a pants-type absorbent article that can use at least one side in the width direction as an adhesive tape type.

In addition, the front waist portion 20f and the rear waist portion 20b have skin-side sheets 22, 23 that expand and contract in the width direction, and have a plurality of waist elastic members 24 (such as silk threads) that expand and contract in the width direction at the ends on the waist side in the longitudinal direction. rubber). As shown in FIG. 11 and FIG. 21 , it is desirable that the front waist portion 20f and the rear waist portion 20b continuously have stretchable regions 20EA stretchable in the width direction at least in a region overlapping with the absorbent main body 10 in the width direction.

In this case, the sanitary napkin 1 fits the wearer's waist. In particular, when the sanitary napkin 1 is used as an adhesive tape type ( FIG. 13B ), although the abdominal abutting portion 20fA of the front waist portion 20f is separated from the rear waist portion 20b, the abdominal portion is held between the pair of tongue pieces 30 . The abutting portion 20fA is pulled toward both outer sides in the width direction so as to be easily fitted to the waist of the wearer.

Also, when the wearer wraps the waist member 20 around the thigh, it is easy to pull the abdominal contact portion 20fA to the front of the thigh, and it is easy to engage the tongue piece 30 with the abdominal contact portion 20fA above the thigh. Also, the front waist portion 20f and the rear waist portion 20b are shrunk in the width direction by the skin-side sheets 22, 23 and the waist elastic member 24 (to fit around the thighs), so that the sanitary napkin 1 is less likely to hang down. Therefore, the sanitary napkin 1 can be suppressed from coming into contact with the toilet.

However, the expansion and contraction force is reduced in the region overlapping the absorptive core 11 in the thickness direction in the stretchable region 20EA, and the flatness of the absorptive core 11 can also be ensured. For example, in the region overlapping with the absorbent core 11 in the thickness direction, compared with other regions, the area ratio of the joint portion (welded portion) between the non-skin side sheet 21 and the skin side sheets 22, 23 is increased, and the skin side sheet 22 is suppressed. , 23 elastic properties. In this way, the absorption area of the absorptive core 11 can be ensured, and the occurrence of a gap between the absorptive core 11 and the wearer can be prevented.

Also, the front waist portion 20f preferably has a low-elasticity region 20NA, which is less elastic than the stretchable region 20EA, on the outer side in the width direction (the side where the tongue piece 30 is provided) than the stretchable region 20EA. By providing the low-elasticity region 20NA, when the wearer pulls the front waist portion 20f in the width direction to tear, the force is efficiently transmitted to the breaking portion, and the tear can be performed with a small force. When the sanitary napkin 1 has the incision line 26, it is desirable that the incision line 26 is arranged between both side ends of the low elastic region 20NA in the width direction. In this case, since both outer sides of the incision line 26 are not easily stretched, it is easy to tear the front waist portion 20f. Also, since the cut-off end of the front waist portion 20f is less prone to curling than the low elastic region 20NA, it is easy to engage the tongue piece 30 on the front waist portion 20f, and the wearer is less likely to feel that the cut-off end of the front waist portion 20f is a foreign object. Therefore, it is preferable that the front waist portion 20f continuously has the stretchable region 20EA in a region overlapping with the absorbent main body 10 at least in the width direction.

On the other hand, the rear portion of the sanitary napkin 1 is more likely to be located near the toilet than the front portion, and since it is wound under the thighs, it is easy to touch the toilet. Therefore, it is desirable that the rear waistline portion 20b continuously has the stretchable region 20EA in the region between the pair of side joint portions 40 in the width direction. In this way, stretchability is imparted to the rear waist portion 20b in a wider range in the width direction, and when the waist member 20 is wrapped around the wearer's thigh, the sagging of the rear portion of the sanitary napkin 1 can be suppressed.

Again, though the back waistline portion 20b has the non-skin side sheet 21 forming its non-skin side, but as shown in Figure 11 and Figure 12, the end of the waistline side of the non-skin side sheet 21 in the longitudinal direction is folded toward the skin side. . And, the longitudinal end of the absorbent main body 10 on the rear side is covered from the skin side.

In this case, more materials are overlapped in the thickness direction at the upper end portion (end portion on the waistline side) of the rear waistline portion 20b, thereby increasing rigidity. Therefore, when the waist member 20 is wrapped around the thigh, the rigidity of the rear portion of the tampon 1 (rear waist portion 20 b ), which is more likely to be in contact with the toilet, can be increased, and the sagging of the rear portion of the tampon 1 can be suppressed.

Also, in the sanitary napkin 1 of the present embodiment, as shown in FIG. elastic member). At this time, the stress (stretch stress) in the width direction in the stretch region 20EA of at least one of the front waist portion 20f and the rear waist portion 20b is larger than the stress (stretch stress) in the longitudinal direction in the region where the leak-proof wall elastic member 141 is arranged. ) is ideally larger.

By increasing the stretch stress of the front waist portion 20f and the rear waist portion 20b, the fit of the sanitary napkin 1 to the wearer's waist can be improved. In addition, it is possible to suppress the sagging of the sanitary napkin 1 when the waist member 20 is wrapped around the thigh. On the other hand, when the waist member 20 wrapped around the thigh is rotated along the circumferential direction of the thigh by suppressing the stretching stress on the side of the absorbent main body 10, the absorbent main body 10 is not easily stretched in its longitudinal direction. It is easy to rotate the waist member 20 . In addition, in the case of the sanitary napkin 1, since the amount of excretion is less than that of nursing diapers, the stretching stress of the leak-proof wall elastic member 141 is also weak, so that excretion can be blocked and side leakage can be suppressed.

In addition, the elastic stress in the width direction of the front waist portion 20f or the rear waist portion 20b is compared with the elastic stress in the longitudinal direction of the side portion of the absorbent main body 10 using a tensile testing machine (for example, an automatic tester manufactured by Shimadzu Corporation). Stereograph-type tensile testing machine AG-1KN1, etc.) confirmation. First, all of the elastic region 20EA of the front waist portion 20f (other than this area when the low elastic region 20NA is present) or all of the elastic region 20EA of the rear waist portion 20b is cut out from the waist member 20f. In addition, a region including the entire stretchable portion of the leak-proof wall elastic member 141 is cut out from the absorptive main body 10 . Take the length in the width direction (stretch direction) of the stretchable region 20EA after cutting out × the width (length in the direction perpendicular to the stretch direction), and the length direction (stretch length) of the stretch portion of the leak-proof wall elastic member 141 after cutting out. direction) length×width becomes the same (for example, 200mm×25mm) to prepare a sample. Moreover, the two ends of the expansion and contraction direction of each sample are clamped with clamps, and the distance between the clamps is opened at a speed of 100mm/min. After the sample is stretched to the maximum elongation state, the tensile load (N /25mm). The tensile load (N/25mm) may be compared as the stress (tension stress) of each sample. In addition, although the stress varies depending on the locations of the waist portions 20f, 20b, at least the maximum stress of the waist portions 20f, 20b is greater than the stress of the side portion of the absorbent main body 10, and it is more preferable that the waist portions 20f, 20b It is sufficient that the minimum stress at 20b is greater than the stress at the side of the absorbent main body 10 .

Moreover, as shown in FIG. 11, the absorptive main body 10 has several absorber elastic members 15 which expand and contract along the longitudinal direction. The absorbent elastic member 15 is made of thread rubber, for example, and is located on the non-skin side of the liquid-impermeable sheet 13a located on the non-skin side of the absorbent core 11 (in FIG. between the sheets 13b) are arranged in a state stretched in the longitudinal direction. In the sanitary napkin 1 of this embodiment, five absorber elastic members 15 are provided at predetermined intervals in the width direction.

In this way, as shown in FIG. 22, the absorbent main body 10 shrinks and rises toward the wearer's skin side, so that the absorbent main body 10 is easily attached to the wearer's crotch (vaginal opening), and leakage of excretion can be suppressed. In addition, by lifting the absorbent body 10 toward the skin side, when the waist member 20 is wrapped around the thigh, it is possible to further suppress the contact of the absorbent body 10 with the toilet. In addition, the elongation ratio of the absorber elastic member 15 is preferably about 1.4 to 3.3 times. The elongation ratio is expressed by dividing the length of the elastic member in the stretched state by the length of the elastic member in the natural state. The elongation ratio of the absorber elastic member 15 may be set to a certain degree of high ratio.

Also, the sanitary napkin 1 of the present embodiment, as shown in FIG. 11, has a front side extension part 20fe and a rear side extension part 20be (extension member ). The front side extension part 20fe and the rear side extension part 20be can cover the wearer's lower abdomen and buttocks, and the appearance of the sanitary napkin 1 is also improved. However, when the waist member 20 is wrapped around the thigh, the parts of the front extension part 20fe and the rear extension part 20be hanging down from the waist member 20 (thigh) may touch the toilet.

Here, it is desirable to provide leg elastic members 25 (for example, thread rubber, etc.) that expand and contract along the leg openings 1b in the front extension portion 20fe and the rear extension portion 20be. The front side extension part 20fe and the rear side extension part 20be are contracted in the width direction and the longitudinal direction by the leg-hole elastic member 25 . Therefore, when the waist member 20 is wrapped around the thigh, the hanging of the front side extension part fe and the rear side extension part 20be is suppressed, and contact with the toilet can be suppressed.

Also, in the sanitary napkin 1 of this embodiment, as shown in FIG. 21, the stretchable skin-side sheets 22, 23 extend to the crotch side more than the front waist portion 20f and the rear waist portion 20b (side joining portion 40). . In this way, it is desirable to arrange stretchable skin-side sheets 22, 23 on at least a part of the front side extension part fe and the back side extension part 20be, and provide an elastic region stretchable in the width direction. In this way, the hanging of the front side extension part fe and the back side extension part 20be when the waistline member 20 is wrapped around the thigh is suppressed, and contact with the toilet can be suppressed.

As mentioned above, in the sanitary napkin 1 of this embodiment, in its expanded state, as shown in FIG. 21 , some elastic members (elastic regions) are arranged from one end portion to the other end portion in the longitudinal direction. Therefore, the sanitary napkin 1 in a natural state shrinks as a whole, and the overall size of the sanitary napkin 1 becomes smaller. Therefore, the sagging of the sanitary napkin 1 when the waist member 20 is wrapped around the thigh can be suppressed.

Also, as shown in FIG. 22 , the sanitary napkin 1 in a natural state engaged with the non-skin side of the front waistline portion 20f in a state where the tongue piece 30 joined to the side joint portion 40 is unfolded inward in the width direction is The following is ideal. The engaging portion 32 of the tongue piece 30 is provided on the outer side in the width direction than the front absorbent main body 10F, and when it is provided on the waist opening side in the longitudinal direction than the front absorbent main body 10F. At least one of the positions is ideal. That is, the engaging portion 32 of the tongue piece 30 is preferably provided outside the front absorbent body 10 without overlapping the front absorbent body 10 in the thickness direction. In the sanitary napkin 1 of the present embodiment, the engaging portion 32 is located outside in the width direction of the front absorbent main body 10F.

In this way, since the underpants-type sanitary napkin 1 is made into an adhesive tape type, when the wearer removes the tongue piece 30 (engagement portion 32 ), a part of the absorbent body 10 can be prevented from being damaged. Therefore, the reduction of the absorption performance of the absorbent main body 10 can be prevented.

Also, although the front waist portion 20f has stretchability in the width direction, the stretchability decreases at the portion overlapping the rigid absorbent main body 10 in the thickness direction (the stretchability may be suppressed intentionally). When the engaging portion 32 is engaged with the front waist portion 20f having reduced stretchability, the hook material of the engaging portion 32 is less entangled with the fibers of the front waist portion 20f. Therefore, by arranging the engaging portion 32 as described above, the engaging portion 32 is easily engaged with the portion of the front waist portion 20f that does not overlap the absorbent main body 10 in the thickness direction, and the hook material of the engaging portion 32 is easily aligned with the front waist portion 20f. The fiber winding of the waist portion 20f can increase the engaging strength of the tongue piece 30 .

In addition, when the initial state of taking out the sanitary napkin 1 from the package is the state of FIG. 22 , the positions of the sanitary napkin 1 in the initial state and the natural state are compared. When the initial state is not the state of FIG. 22 (for example, when the tongue piece 30 is folded, etc.), relative to the sanitary napkin 1 in the natural state (the waist member 20 in the natural state), the side joint portion 40, etc. is directed toward the inner side in the width direction. The positions of the extended tongue 30 are compared in a state in which the tongue 30 is engaged with the front waist portion 20f.

In addition, although the sanitary napkin 1 is a pants type absorbent article for adults, as shown in FIG. 22 , the longitudinal lengths L1 and L2 of the front waist portion 20f and the side joining portions 40 are relatively short. Specifically, the sanitary napkin 1 in a natural state is engaged with the non-skin side of the front waist portion 20f in a state where the tongue piece 30 joined to the side joint portion 40 is closed inward in the width direction, and the front waist portion 20f, And the longitudinal lengths L1 and L2 of the side joint part 40 are set as follows. First, the minimum length L1 in the longitudinal direction of the portion 20fC of the front waistline portion 20f where the position in the width direction overlaps the tongue piece 30 is set to 80 mm or more and 150 mm or less. Moreover, the longitudinal length L2 of the side joint part 40 of the joint tongue piece 30 is set to 100 mm or more and 160 mm or less.

The region 20fC of the front waist portion 20f overlapping with the tongue piece 30 is an easy-to-hold portion for the wearer who opens the tongue piece 30 and tears the front waistline portion 20f as shown in FIG. 15C. Therefore, by making the longitudinal length L1 of the part 20fC relatively short, the wearer can easily hold the part 20fC and easily pull the front waist part 20f in front of the thigh. Also, as shown in FIG. 16D, when pressing the front waistline 20f above the thigh from above, the front waistline 20f can be pressed in a large longitudinal range with the hand, and the position of the front waistline 20f can be stabilized. Engage the tongue piece 30 .

According to the survey results of Japanese hand size data by the Artificial Intelligence Research Center, the average length from the root of the thumb and index finger to the tip of the index finger is 100.6mm for women, 109.7mm for men, and 109.7mm for men. 107mm for men and women). Therefore, by setting the above-mentioned dimension L1 of the front waist portion 20f to 150 mm or less, the wearer can hold and hold the front waist portion 20f for more than half of the length in the longitudinal direction. Therefore, the tongue piece 30 can be stably engaged, and the wearability of the sanitary napkin 1 can be improved.

On the other hand, the front waist portion 20 is a member that expands and contracts in the width direction, and fits the wearer's waist. Since the above-mentioned dimension L1 of the front waistline part 20f is set to 80 mm or more, it is preferable not to be too short. In this way, the sanitary napkin 1 can be prevented from being shifted and dropped, and the wearer can use the sanitary napkin 1 with peace of mind.

Moreover, since the longitudinal length L2 of the side joint part 40 is shortened similarly to the front waist part 20f, the longitudinal length of the tongue piece 30 joined to the side joint part 40 is also shortened. Therefore, as shown in FIG. 15C , the wearer can easily hold the tongue 30 . However, the longitudinal length L2 of the side joint portion 40 is preferably slightly longer than the longitudinal length L1 of the front waist portion 20f, and is in the range of 100 mm to 160 mm. In this way, as shown in FIG. 15C, when the wearer holds the tongue 30 and pulls the sanitary napkin 1 from under the thighs, the pulling force is easily transmitted to the rear part of the sanitary napkin 1 through the longitudinally long side joints 40. on a large vertical scale. Therefore, it is easy to pull up the rear part of the tampon 1 from under the thigh. However, the present invention is not limited to this, and the longitudinal lengths L1 and L2 of the front waist portion 20f and the side joint portion 40 may be equal to each other.

In this way, the lengths L1 and L2 of the front waist portion 20f and the side joint portion 40 are shortened, and wearability when the wearer wears the sanitary napkin 1 by himself improves. In the case of a shorts-type absorbent article for adults (such as the sanitary napkin 1 of this embodiment, light incontinence diapers, etc.) for the wearer who wears himself or herself, compared with a shorts-type absorbent article for nursing care, the absorbency The core 11 is small, and the absorbent core 11 is also light after excretion. Therefore, even if the lengths L1 and L2 of the front waistline part 20f and the side joining part 40 are shortened, there is little concern that the underpants-type absorbent article will deviate and fall.

Furthermore, by shortening the lengths L1 and L2 of the front waist portion 20f and the side joining portion 40, as shown in FIG. 16B , when the sanitary napkin 1 is wrapped around the thigh, the sanitary napkin 1 (especially the absorbent main body 10) is less likely to hang down. . Therefore, the sanitary napkin 1 is less likely to come into contact with the toilet, and can be used hygienically. In addition, since the sanitary napkin 1 has a shape close to that of underwear, the appearance of the sanitary napkin 1 is also improved.

===Others=== For example, in the aforementioned embodiment, the waist member 20 is provided with stretchability in the width direction by arranging the stretchable skin-side sheets 22 and 23 on the waist member 20 . Instead of a stretchable sheet, stretchability may be imparted to the waist member 20 by arranging a plurality of filamentary elastic members (thread rubber, etc.) stretchable in the width direction at intervals in the longitudinal direction.

Moreover, when the volume of the absorbent core 11 is 100 cm ³ to 250 cm ³ , and is held in such a manner that the center line CL1 of the engaging portion 32 is horizontal, it is not limited to satisfying that the lowest end of the absorbent core 11 is at the lowest point of the product. The lower end is closer to the upper side; the length from the horizontal line LH (see Figure 23) to the lowermost end of the product is set shorter than the length to the uppermost end of the product; and the line La connecting the first center C1 and the second center C2, and the line La connecting the second The inclination of the line Lb of the center C2 and the third center C3 is the same in all cases, and it is only necessary to satisfy at least one type of underpants-type absorbent article.

Also, the front waist portion 20f and the rear waist portion 20b are not limited to being joined at the side joint portion 40 formed by welding or the like, and may be bonded with an adhesive having a weak adhesive force, or by the waist member 20 and the joint. The engaged hook material, or the hook material and the female member of the plane buckle may be engaged, and the hook material may also be used as an engaging portion of the tongue (engaging member).

The above and the above-mentioned embodiments are for the purpose of facilitating the understanding of the present inventors, and are not intended to limit the present invention for explainers. The present invention can be changed and improved without departing from the gist thereof, and it goes without saying that the present invention also includes equivalents thereof.

1: Sanitary napkin (short type absorbent article) 1a: Waist opening 1b: Leg opening 10: Absorbent body 11: Absorbent core 12: Top flakes 13: back sheet 13a: Liquid-impermeable sheet 13b: Hydrophobic flakes 14: leak-proof wall 141: leakproof wall elastic member (side elastic member) 20: waist member 20f: front waistline 20fA: ventral abutment 20fB: Non-separated part 20fC: overlapping area 20fe: side edge 20fup: upper side edge 20fdw: lower side edge 20b: Back waistline 20EA: Low elasticity part (stretch area) 20NA: High elasticity part (low stretch area) 21: Non-skin side sheet 22: Skin side flakes 23: Skin side flakes 24: Waist elastic member 25: Separation Department 26: cut line 27: leg circumference elastic member 30: tongue (fastening member, other fastening member) 30T: protrusion 31: substrate sheet 32:Catching part 33: Press section 40: side joint (junction) 50: Absorber elastic member CL: central location L1: Length in the up and down direction

[ FIG. 1 ] is a schematic perspective view of a sanitary napkin 1 . [ Fig. 2 ] It is a schematic plan view of the sanitary napkin 1 in an unfolded and stretched state viewed from the skin side in the thickness direction. [ FIG. 3 ] is a schematic cross-sectional view of A-A in FIG. 2 . [ Fig. 4] Figs. 4A and 4B are schematic cross-sectional views of the sanitary napkin 1 viewed from the side of the waist opening 1a. [ Fig. 5 ] is a developed plan view of the sanitary napkin 1 in a state where the front waist portion 20f is separated from the rear waist portion 20b along the incision line 25. [ Fig. 6 ] Fig. 6A to Fig. 6C are diagrams illustrating an example of how the wearer puts on the sanitary napkin 1 . [ Fig. 7 ] Fig. 7A to Fig. 7D are diagrams illustrating an example of how the wearer puts on the sanitary napkin 1 . [FIG. 8] It is a front view which looked at the pants type sanitary napkin 1 from the front side. [FIG. 9] It is a front view which looked at the underpants type sanitary napkin 1 from the front side. [ Fig. 10 ] is a front view of the sanitary napkin 1 in a state in which the tongue piece 30 is engaged as seen from the front side after being separated along the incision line 25 . [ Fig. 11 ] is a schematic plan view of the sanitary napkin 1 in an unfolded and stretched state viewed from the skin side in the thickness direction. [ Fig. 12 ] is a schematic sectional view of A-A in Fig. 11 . [ Fig. 13] Fig. 13A and Fig. 13B are schematic cross-sectional views of the sanitary napkin 1 viewed from the side of the waist opening 1a. [ Fig. 14 ] It is a developed plan view of the sanitary napkin 1 in a state where the front waist portion 20f is separated from the rear waist portion 20b along the incision line 26 . [ Fig. 15 ] Fig. 15A to Fig. 15C are diagrams illustrating an example of how the wearer puts on the sanitary napkin 1 . [ Fig. 16 ] Fig. 16A to Fig. 16D are diagrams illustrating an example of how the wearer puts on the sanitary napkin 1 . [ Fig. 17 ] is a front view of the underpants type sanitary napkin 1 seen from the front side. [FIG. 18] It is a front view of the sanitary napkin 1 which separated the front waist part 20f from the rear waist part 20b on one side of the left-right direction. [ FIG. 19 ] A view showing a part of the rear waist portion 20 b in a state where the front waist portion 20 f is separated on one side in the left-right direction and the tongue piece 30 is opened outward. [FIG. 20] It is a front view of the sanitary napkin 1 which separated the front waist part 20f from the rear waist part 20b on both sides of the left-right direction. [ Fig. 21 ] It is a developed plan view of the sanitary napkin 1 in a state where the front waist portion 20f is separated from the rear waist portion 20b along the incision line 26 . [ Fig. 22 ] is a front view of the underpants type sanitary napkin 1 seen from the front side. [FIG. 23] It is a front view of the state which held the sanitary napkin 1 so that the longitudinal centerline CL11 along the engaging part 32 may become horizontal. [FIG. 24] It is a front view of the state which held the sanitary napkin 1 of a modification in the same manner as FIG. 23.

1: Sanitary napkin (short type absorbent article)

10: Absorbent body

30: tongue (fastening member, other fastening member)

40: side joint (junction)

50: Absorber elastic member

20NA: High elasticity part (low stretch area)

20EA: Low elasticity part (stretch area)

20f: front waistline

20fup: upper side edge

20fe: side edge

20fC: overlapping area

20fdw: lower side edge

L1: Length in the up and down direction

Claims (54)

A shorts-type absorbent article having intersecting up-down directions, left-right directions, and front-back directions, And has: absorbent body; The waist member that expands and contracts in the left-right direction is provided with a front waist portion and a rear waist portion arranged to overlap with the absorbent main body in the front-rear direction; and an engaging member for detachably engaging the non-skin side of the aforementioned front waist portion, A shorts-type absorbent article for adults obtained by joining the aforementioned front waist portion and the aforementioned rear waist portion, characterized by: The engaging member is joined to the front waist portion, Between the left and right side edges of the front waist portion, The front waistline portion has a high elastic portion having a larger elastic modulus than the surrounding area in at least a part of an overlapping region overlapping with the engaging member in a plan view. The underpants-type absorbent article of claim 1, wherein, At least a part of the region where the front waistline portion and the engaging member overlap in the left-right direction has the high elastic portion in an upper region including the upper edge in the vertical direction or a lower region including the lower edge. The shorts-type absorbent article according to claim 1 or 2, wherein, In a natural state, the minimum value of the length in the vertical direction of the front waistline in the region where the front waistline and the engaging member overlap in the left-right direction is not less than 80 mm and not more than 150 mm. The underpants-type absorbent article according to any one of claims 1 to 3, wherein, The high elasticity part of the said front waistline part is provided with the incision line which has length in the said up-down direction. Such as the shorts-type absorbent article of claim 4, wherein, The respective side portions in the left-right direction of the front waist portion and the rear waist portion are joined by a pair of joint portions, In a natural state, the length of the above-mentioned joint portion in the above-mentioned up-down direction is longer than the length of the above-mentioned incision line. The shorts-type absorbent article according to claim 4 or 5, wherein, The engaging member has an engaging portion engaged with the non-skin side of the front waist portion, In the state before the ventral abutting portion of the front waist portion is separated from the rear waist portion along the incision line, The said engaging part is located inside rather than the said incision line in the said left-right direction. The underpants-type absorbent article according to any one of claims 4 to 6, wherein, In the state before the ventral abutting portion of the front waist portion is separated from the rear waist portion along the incision line, The engaging member is arranged to cover at least a part of the incision line, The upper end of the incision line is located above the upper end of the engaging member, or the lower end of the incision line is located below the lower end of the engaging member. The underpants-type absorbent article according to any one of claims 4 to 7, wherein, In a natural state, the high elastic portion has a length of 10 mm or more from the incision line toward the inner side in the left-right direction. Such as the shorts-type absorbent article of claim 6, wherein, In the left-right direction, the length from the inner end of the engaging portion to the inner end of the engaging member is not less than 5 mm and not more than 50 mm. The pants-type absorbent article according to any one of claims 1 to 9, wherein, The pants-type absorbent article has a pair of the engaging members, The pair of engaging members are joined to the front waist portion on both sides in the left-right direction, The front waist portion has the high elastic portion in at least a part of each overlapping region on both sides in the left-right direction overlapping with the pair of engaging members in a plan view, A low elastic portion having a smaller elastic coefficient than the high elastic portion is continuously provided between the high elastic portions on both sides in the left-right direction of the front waistline portion. The underpants-type absorbent article of claim 10, wherein, The engaging member has an engaging portion engaged with the non-skin side of the front waist portion, In a state where the engaging portion is engaged with the front waist portion, the low elasticity portion has a portion overlapping at least a part of the engaging portion in a planar view. The pants-type absorbent article according to any one of claims 1 to 11, wherein, The maximum length of the said engaging member in the said left-right direction is 20 mm or more and 120 mm or less. The underpants-type absorbent article according to any one of claims 1 to 12, wherein, The front waist portion has an incision line having a length in the up-down direction at one end portion in the left-right direction, After separating the ventral abutting portion of the front waist portion from the rear waist portion along the incision line, in a state where the engaging member is engaged with the non-skin side of the front waist portion, The engaging member has a protruding portion that protrudes toward the lower side in the up-down direction than the lower edge of the front waist portion. A shorts-type absorbent article having intersecting up-down directions, left-right directions, and front-back directions, And has: absorbent body; The waist member that expands and contracts in the left-right direction is provided with a front waist portion and a rear waist portion arranged to overlap with the absorbent main body in the front-rear direction; and an engaging member for detachably engaging the aforementioned front waist portion, A shorts-type absorbent article for adults formed by joining the front waist part and the rear waist part by a pair of joining parts, characterized by: The engaging part of the engagement member on one side in the left-right direction is joined to the waist member, The minimum length in the up-down direction of the portion of the front waistline where the position in the left-right direction overlaps with the engaging member is not less than 80 mm and not more than 150 mm, The length of the above-mentioned up-down direction of the said junction part of the said one side of the said left-right direction is 100 mm or more and 160 mm or less. A shorts-type absorbent article having intersecting up-down directions, left-right directions, and front-back directions, And has: absorbent body; The waist member that expands and contracts in the left-right direction is provided with a front waist portion and a rear waist portion arranged to overlap with the absorbent main body in the front-rear direction; and an engaging member provided on one side of the waist member in the left-right direction and detachably engaged with the front waist portion, A pants-type absorbent article formed by joining the front waist portion and the rear waist portion by a pair of joining portions, characterized by: In a state where the abdominal abutting portion of the front waist portion is separated from the rear waist portion along the inner side end of the joining portion on one side in the left-right direction, and is in a natural state, The length ratio from the end of the one side of the abdominal side contact portion in the left-right direction to the inner end of the joint portion on the other side is from the end of the one side of the rear waist portion in the left-right direction to the other side. The length of the inner side end of the said joint part of one side is longer. The underpants-type absorbent article of claim 15, wherein, The front waist portion has an incision line having a length in the up-down direction at the end portion on the one side in the left-right direction, In the state where the ventral abutting portion of the front waist portion is separated from the rear waist portion along the incision line, and in a natural state, The length ratio from the end of the one side of the abdominal side contact portion in the left-right direction to the inner end of the joint portion on the other side is from the end of the one side of the rear waist portion in the left-right direction to the other side. The length of the inner side end of the said joint part of one side is longer. The underpants-type absorbent article of claim 16, wherein, The absorbent main body has an absorbent core, The ventral abutting portion of the front waist portion is separated from the rear waist portion along the incision line, and the engagement member is unfolded toward the one side in the left-right direction, and in a natural state, The length from the end on the one side of the absorptive core on the front side in the left-right direction to the end on the one side of the abdominal contact portion is 50 mm or more and 200 mm or less, The length from the end of the said one side of the said absorptive core on the rear side in the said left-right direction to the end of the said one side of the said engaging member is 100 mm or more and 300 mm or less. The pants-type absorbent article according to any one of claims 15 to 17, wherein, In the aforementioned separated state, and in its natural state, It is located on the lower end side than the upper end portion of the abdomen side contact portion, and is located on the aforementioned one side in the aforementioned left-right direction. The underpants-type absorbent article according to any one of claims 14 to 18, wherein, The front waist portion has an incision line having a length in the up-down direction at the end portion on the one side in the left-right direction, The engaging member has an engaging portion engaged with the front waist portion, The ventral abutting portion of the front waist portion is separated from the rear waist portion along the incision line, and the engagement member is unfolded toward the one side in the left-right direction, and in a natural state, The portion of the front waist portion separated from the abdominal side contact portion is located on the inner side in the left-right direction than the engaging portion. The underpants-type absorbent article according to any one of claims 14 to 19, wherein, The front waist portion has an elastic region that expands and contracts in the left-right direction, a low-elasticity region that is less elastic than the elastic region, and an incision line that has a length in the vertical direction, The low elastic region is arranged on the one side in the left-right direction than the elastic region, The said incision line is arrange|positioned between the both side ends of the said low elastic area|region in the said left-right direction. Such as the shorts-type absorbent article of claim 20, wherein, In the pants-type absorbent article in the unfolded and stretched state, the length ratio from the incision line to the end on the other side in the left-right direction of the low-elasticity region is from the inner end of the junction portion on the one side in the left-right direction to The length of the said incision line in the said left-right direction is longer. The underpants-type absorbent article according to any one of claims 14 to 21, wherein, In the pants-type absorbent article, the engaging members are provided on both sides of the waist member in the left-right direction. The underpants-type absorbent article of claim 22, wherein, One engagement member is provided on both sides of the waist member in the left-right direction, The engaging member has one engaging portion engaged with the front waistline portion. The underpants-type absorbent article according to any one of claims 14 to 23, wherein, The engaging member has an engaging portion engaged with the front waist portion, The aforementioned absorbent body has an absorbent core, In the unfolded and stretched underpants-type absorbent article, the vertical length from the upper end of the front waist portion to the front upper end of the absorbent core is longer than the vertical length of the engaging portion. The underpants-type absorbent article of claim 24, wherein, In the stretched underpants-type absorbent article, the vertical length from the upper end of the rear waistline to the rear upper end of the absorbent core is shorter than the vertical length of the engaging portion. The underpants-type absorbent article according to any one of claims 14 to 25, wherein, The engaging member has an engaging portion engaged with the non-skin side of the front waist portion, The color of the non-skin side of the aforementioned front waist portion is the same color as the color of the non-skin side of the aforementioned engaging member, The engaging member has a plurality of pressing portions that press the engaging member in a thickness direction in a region where the engaging portion is disposed. The underpants-type absorbent article according to any one of claims 14 to 26, wherein, At least one of the upper end and the lower end of the engaging member has an inclined portion that inclines toward the center of the engaging member in the vertical direction toward the inner side in the left-right direction. The underpants-type absorbent article according to any one of claims 14 to 27, wherein, In the unfolded and stretched underpants-type absorbent article, the length from one side end of the above-mentioned underpants-type absorbent article in the vertical direction to the center is not less than 200 mm and not more than 350 mm. The underpants-type absorbent article according to any one of claims 14 to 28, wherein, The engaging member has an engaging portion engaged with the front waist portion, At the position of the inner side end of the joining portion on the one side in the left-right direction, the vertical length of the engagement member is longer than the vertical length of the front waist portion, The minimum length in the vertical direction of the portion of the front waistline portion where the position in the left-right direction overlaps with the engaging portion is longer than the maximum length in the vertical direction of the engaging portion. The underpants-type absorbent article according to any one of claims 14 to 29, wherein, The waist member continuously has an elastic region that expands and contracts in the left-right direction at least in a region that overlaps the absorbent main body at a position in the left-right direction. The underpants-type absorbent article according to any one of claims 14 to 30, wherein, In the underpants-type absorbent article in the unfolded and stretched state, the maximum length of the engaging member in the left-right direction is not less than 20 mm and not more than 120 mm. The pants-type absorbent article according to any one of claims 14 to 31, wherein, The aforementioned absorbent body has an absorbent core, The engaging member has an engaging portion engaged with the front waist portion, The said engaging site is located in the said one side of the said left-right direction rather than the said absorptive core. A shorts-type absorbent article, which has longitudinal and width directions and front and rear directions intersecting each other, And have: the absorbent body is equipped with an absorbent core; A waist member comprising a front waist portion and a rear waist portion arranged to overlap the absorbent main body in the front-rear direction; and The engaging member is provided with an engaging portion that detachably engages the front waist portion Pants-type absorbent articles for adults, characterized by: The shorts shape is maintained in such a way that the center line connecting the center of the width direction of the end of the one side of the longitudinal direction of the engaging portion and the center line of the center of the width direction of the end of the other side of the longitudinal direction of the engaging portion is horizontal. In the case of an absorbent article, the lowermost end of the absorbent core is positioned above the lowermost end of the pants-type absorbent article. A shorts-type absorbent article, which has longitudinal and width directions and front and rear directions intersecting each other, And have: the absorbent body is equipped with an absorbent core; A waist member comprising a front waist portion and a rear waist portion arranged to overlap the absorbent main body in the front-rear direction; and The engaging member is provided with an engaging portion that detachably engages the front waist portion, The shorts-type absorbent article for adults is formed by folding the folded part in half toward the aforementioned front-rear direction, and is characterized by: The shorts shape is maintained in such a way that the center line connecting the center of the width direction of the end of the one side of the longitudinal direction of the engaging portion and the center line of the center of the width direction of the end of the other side of the longitudinal direction of the engaging portion is horizontal. absorbent articles, The length ratio in the vertical direction from the horizontal line passing through the point of intersection to the lowermost end of the pants-shaped absorbent article of the folded portion is from The length in the vertical direction from the horizontal line to the uppermost end of the pants-type absorbent article is shorter. A shorts-type absorbent article, which has longitudinal and width directions and front and rear directions intersecting each other, And have: the absorbent body is equipped with an absorbent core; A waist member comprising a front waist portion and a rear waist portion arranged to overlap the absorbent main body in the front-rear direction; and The engaging member is provided with an engaging portion that detachably engages the front waist portion Pants-type absorbent articles for adults, characterized by: The aforementioned absorbent body on the front side has: The end of one side in the longitudinal direction is located at the first center of the center in the width direction; The central line that divides the aforementioned absorbent main body on the front side in half in the aforementioned longitudinal direction is located at the second center of the aforementioned widthwise center; and The third center of the end on the other side of the longitudinal direction located at the center of the aforementioned width direction, The shorts shape is maintained in such a way that the center line connecting the center of the width direction of the end of the one side of the longitudinal direction of the engaging portion and the center line of the center of the width direction of the end of the other side of the longitudinal direction of the engaging portion is horizontal. In the case of an absorbent article, the gradient relative to the horizontal direction of the line connecting the first center and the second center is the same as the gradient relative to the horizontal direction of the line connecting the second center and the third center . The pants-type absorbent article according to any one of claims 33 to 35, wherein, When the underpants-type absorbent article held so that the center line is horizontal is seen from the front side, the lower side of the pair of side ends of the absorbent main body in the width direction than the lower side end can be seen from the front side. The skin side of the aforementioned absorbent main body on the rear side is visually recognized. The pants-type absorbent article according to any one of claims 33 to 35, wherein, When the underpants-type absorbent article held so that the center line is horizontal is seen from the front side, the rear side can be seen on the upper side of the pair of side ends of the absorbent main body in the width direction than the upper side end. The skin side of the aforementioned absorbent body on the side. The pants-type absorbent article according to any one of Claims 33 to 37, wherein, In the aforementioned width direction, another engaging member is provided at a position on the opposite side of the aforementioned engaging member, When the said underpants-shaped absorbent article is held so that the said center line may become horizontal, the engaging part with which the said other engaging member is equipped is located above the lowermost end of the said underpants-shaped absorbent article. The pants-type absorbent article according to any one of claims 33 to 38, wherein, In the aforementioned width direction, another engaging member is provided at a position on the opposite side of the aforementioned engaging member, When the pants-type absorbent article is held so that the center line is horizontal, at least a part of the engaging portion provided by the other engaging member is relative to the longitudinal direction of the engaging portion provided by the engaging member. The vertical line at the end of the girdle side is on the girdle side. A shorts-type absorbent article having longitudinal, width, and front-rear directions intersecting each other, and comprising: an absorbent body having an absorbent core; The arranged front waist portion and rear waist portion; and the engaging member are shorts-type absorbent articles for adults provided with an engaging portion for detachably engaging the front waist portion, and are characterized in that: The volume of the portion of the pants-type absorbent article of the absorbent core is not less than 100 cm ³ and not more than 250 cm ³ . The underpants-type absorbent article according to any one of claims 33 to 40, wherein, The width of the said absorptive core is 50 mm or more and less than 100 mm. The underpants-type absorbent article according to any one of Claims 33 to 41, wherein, In the underpants-type absorbent article in the expanded and stretched state, the thickness of the said underpants-type absorbent article at the site where the said absorbent core is arrange|positioned is less than 5.5 mm. The pants-type absorbent article according to any one of claims 33 to 42, wherein, The mass of the said absorptive core is 10 g or more and 40 g or less. The pants-type absorbent article according to any one of claims 33 to 43, wherein, The aforementioned engaging portion included in the aforementioned engaging member is The case where the aforementioned absorbent main body on the front side is provided at a position outside the aforementioned width direction, and At least one of the cases where the absorbent main body on the front side is provided at a position on the waist side in the longitudinal direction. The pants-type absorbent article according to any one of claims 33 to 44, wherein, One engagement member having one engagement portion is provided on one side of the waist member in the width direction, One other engaging member having one engaging portion is provided on the other side in the width direction of the waist member. The pants-type absorbent article according to any one of claims 33 to 45, wherein, The aforementioned front waistline has an incision line having a length in the aforementioned longitudinal direction, The engaging member is visible from the non-skin surface side of the front waist portion in a state where the front waist portion is not torn along the incision line in the longitudinal direction. The underpants-type absorbent article according to any one of Claims 33 to 46, wherein, The front waistline portion continuously has an elastic region that expands and contracts in the width direction at least in a region that overlaps the absorbent main body at a position in the width direction. The underpants-type absorbent article according to any one of Claims 33 to 47, wherein, The respective widthwise side portions of the front waist portion and the rear waist portion are joined by a pair of joining portions, The region between the pair of joint portions in the width direction of the rear waist portion continuously has an elastic region that expands and contracts in the width direction. The pants-type absorbent article according to any one of Claims 33 to 48, wherein, In the unfolded and stretched underpants-type absorbent article, the length from one side end of the above-mentioned underpants-type absorbent article in the longitudinal direction to the center is not less than 200 mm and not more than 350 mm. The pants-type absorbent article according to any one of Claims 33 to 49, wherein, The absorptive main body has an absorber elastic member that expands and contracts along the longitudinal direction of the absorptive main body. The underpants-type absorbent article according to any one of claims 33 to 50, wherein, The pants-type absorbent article has an extension member extending from at least one of the front waist portion and the rear waist portion toward the crotch side in the longitudinal direction, and the extension member has an elastic region that expands and contracts in the width direction. The underpants-type absorbent article according to any one of Claims 33 to 51, wherein, The aforementioned rear waistline portion has a non-skin side sheet forming its non-skin side, The waist-side end of the non-skin-side sheet in the longitudinal direction is folded toward the skin, and covers the longitudinal end of the absorbent main body from the skin side. The pants-type absorbent article according to any one of Claims 33 to 52, wherein, The said absorptive main body has the area|region where the said absorptive core does not exist in the side part of the said width direction. The underpants-type absorbent article according to any one of Claims 33 to 53, wherein, At least one of the front waist portion and the rear waist portion has an elastic region that expands and contracts in the width direction, The above-mentioned absorbent body has side elastic members stretchable along the long direction of the above-mentioned absorbent body on the side of the aforementioned width direction, At least one of the front waist portion and the rear waist portion has greater stress in the width direction in the elastic region than in the longitudinal direction in the region where the side elastic members are disposed.

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