JP5107760B2 - Pants-type wearing article - Google Patents

Description

  The present invention relates to a pants-type wearing article such as a disposable diaper.

Conventionally, in a pants-type disposable diaper comprising an absorbent main body including an absorbent body and an outer packaging material that is positioned on the non-skin contact surface side of the absorbent main body and fixes the absorbent main body, leakage of body fluid In order to prevent the diaper from slipping off, an elastic member is known around the leg.
However, if an elastic member is provided around the legs, the wearer's legs may be tightened, leaving rubber marks due to the elastic members around the legs.
Further, for the purpose of preventing body fluid leakage and diaper slipping, for example, the cited document 1 is formed of a waistline elastic member and a buttocks elastic member arranged to overlap the waistline elastic member. A technique of a pants-type disposable diaper having an elastic stretchable part is disclosed.

  However, the elastic stretchable part of the pant-type disposable diaper described in the cited document 1 includes a waistline elastic member parallel to the diaper width direction and a heel elastic member arranged to be inclined and overlapped with the waistline elastic member. Since it is formed, it is difficult to effectively prevent slippage. Moreover, since the elastic expansion-contraction part of the underpants type disposable diaper described in the cited reference 1 is provided with another elastic member along the leg circumference, it is easy to leave a rubber mark by the elastic member around the leg.

JP 2006-14862 A

  Therefore, the objective of this invention is providing the underpants type wearing article which can prevent the leakage of a bodily fluid and the slippage of a diaper, even if it does not comprise an elastic member around a leg.

  The present invention is a pants-type wearing article in which both side edges of the abdominal side and both side edges of the back side are joined to each other and have a waist opening and a pair of leg openings, Each of the left and right elastic elastic parts has a back-side intersection formed by intersecting a first body elastic member and a second body elastic member arranged on the outer packaging material. The first and second torso elastic members are configured such that the formation position of the dorsal crossing portion abuts on the site of the wearer's greater trochanter when the pant-type wearing article is worn. Further, the object is achieved by providing a pants-type wearing article.

  According to the pants-type wearing article of the present invention, it is possible to reduce rubber marks by elastic members around the legs, and to prevent leakage of body fluids and diaper displacement.

  Hereinafter, a preferred embodiment of a pants-type disposable diaper that is a pants-type wearing article of the present invention will be described with reference to FIGS.

  As shown in FIG. 2, the pants-type disposable diaper 1A of the first embodiment is formed symmetrically with respect to the center line CL extending in the longitudinal direction of the pants-type disposable diaper 1A. The elastic stretchable portion D ′ has the same configuration as the elastic stretchable portion D on the right side of the back side portion A, except that the elastic stretchable portion D ′ is symmetric with respect to the center line CL, and a dash (′) is added to the reference numeral. As shown. Similarly, the elastic elastic part E 'on the left side of the ventral side B has the same configuration as the elastic elastic part E on the right side of the ventral side B, and is indicated by a dash (').

The pants-type wearing article (pants-type disposable diaper) 1A of the first embodiment includes both side edges 2a, 2a ′ of the back side A and both side edges 2b of the ventral side B, as shown in FIGS. 2b 'are joined together to have a waist opening 4 and a pair of leg openings 5 and 5.
As shown in FIG. 2, the pants-type disposable diaper 1 </ b> A has elastic expansion / contraction portions D and D ′ on the left and right sides of the back side portion A, and the left and right elastic expansion / contraction portions D and D ′ are attached to the outer packaging material 2. The first trunk part elastic members 23a, 23a ′ and the second trunk part elastic members 23b, 23b ′ are arranged so as to intersect with each other.
As shown in FIG. 2, the first body elastic members 23a and 23a ′ extend obliquely from the edges 5a and 5a ′ of the leg opening 5 toward the edges of the waist opening 4, and the second body The elastic members 23b and 23b ′ extend in an oblique direction from the side edges 2a and 2a ′ of the back side A toward the center of the back side A near the crotch C.
Further, as shown in FIG. 2, the first torso elastic members 23a and 23a ′ and the second torso elastic members 23b and 23b ′ are arranged such that the back crossing portions 24a and 24a ′ are formed in a pants-type disposable diaper 1A. It is arranged so that it may contact the part of a wearer's greater trochanter 7 (refer to Drawing 4 and Drawing 5) when wearing.

As shown in FIG. 2, the pants-type disposable diaper 1A further has elastic stretchable parts E and E ′ on the left and right sides of the abdominal side B, and the left and right elastic stretchable parts E and E ′ The third trunk part elastic members 23c, 23c 'and the fourth trunk part elastic members 23d, 23d' arranged on the material 2 are provided with ventral side intersecting parts 24b, 24b '.
As shown in FIG. 2, the third torso elastic members 23c and 23c ′ extend obliquely from the side edges 2b and 2b ′ of the ventral side B toward the edge of the waist opening 4, and the fourth torso The partial elastic members 23 d and 23 d ′ extend in an oblique direction from the edge 4 a of the waist opening 4 toward the center of the ventral side B near the crotch C.

As shown in FIG. 2, the left and right elastic elastic parts D and D ′ of the back side A of the pants-type disposable diaper 1A and the left and right elastic elastic parts E and E ′ of the abdominal side B are respectively attached to the outer packaging material 2. Further provided are auxiliary body elastic members 25a, 25a ′, 25b, 25b ′.
As shown in FIG. 2, each of the auxiliary body elastic members 25a, 25a ′, 25b, and 25b ′ is arranged in parallel to the width direction (the same direction as the center line WL) of the pants-type disposable diaper 1A. Each of the partial elastic members 25a, 25a ′, 25b, and 25b ′ is a region from the wearer's iliac crest 8a to the upper anterior iliac spine 8b when the pant-type disposable diaper 1A is worn (see FIGS. 4 and 5). It is arranged to be located in.

  The pants-type disposable diaper 1A of the first embodiment will be described in detail. The pants-type disposable diaper 1A of the present embodiment includes an absorbent main body 3 including an absorbent core 34 and an absorbent main body 3, as shown in FIG. And an outer packaging material 2 which is positioned on the non-skin contact surface side and fixes the absorbent main body 3. As shown in FIG. 2, the outer packaging material 2 has a back side portion A, a crotch portion C, and an abdominal side portion B in the longitudinal direction. The pants-type disposable diaper 1 </ b> A of this embodiment is shown in FIG. 1. As shown, the side edges 2a and 2a 'of the back side A and the side edges 2b and 2b' of the abdomen B in the outer packaging material 2 are joined to each other to form a pair of side seals 6 and a waist opening 4 respectively. And a pair of leg openings 5, 5 '. The back side part A of the outer packaging material 2 is a part disposed on the back side of the wearer when the pant-type disposable diaper 1A is worn, and the abdominal side part B is a part disposed on the abdomen side of the wearer. The crotch part C is a part arranged in the crotch part of the wearer. The longitudinal direction of the outer packaging material 2 is the direction from the abdominal side B to the back side A through the crotch C, or the opposite direction, and is the same as the longitudinal direction of the diaper in the deployed state (vertical direction in FIG. 2). .

  As shown in FIGS. 2 and 3, the outer packaging material 2 has a shape in which both side edges are constricted inward in the longitudinal center portion. 2 and 3, the outer packaging material 2 is disposed between the outer layer sheet 21 forming the outer surface of the diaper, the inner layer sheet 22 disposed on the inner surface side of the outer layer sheet 21, and both the sheets 21, 22. The first body elastic members 23a, 23a ′, the second body elastic members 23b, 23b ′, the third body elastic members 23c, 23c ′, the fourth body elastic members 23d, 23d ′, auxiliary body elastic members 25a, 25a ′, 25b, 25b ′, waist elastic members 26a, 26a ′, 26b, 26b ′, lower auxiliary elastic members 27a, 27a ′, 27b, 27b ′, As shown in FIG. 2, elastic expansion / contraction portions D and D ′ are provided on the left and right sides of the back side A of the outer packaging material 2, and elastic expansion / contraction portions E and E ′ are provided on the left and right sides of the ventral side portion B, respectively.

  As shown in FIG. 3, the outer layer sheet 21 of the outer packaging material 2 extends further than a portion where the waist elastic members 26 a, 26 a ′, 26 b and 26 b ′ are sandwiched and fixed by the outer layer sheet 21 and the inner layer sheet 22. The extension regions 21 </ b> B and 21 </ b> B extending from the inner layer sheet 22 in the outer layer sheet 21 are folded back toward the absorbent main body 3 side. The inner layer sheet 22 has the same shape as that of the outer layer sheet 21 other than the extension region 21B. In the extension region 21 </ b> B of the outer layer sheet 21, a portion that overlaps both end portions in the longitudinal direction of the absorbent main body 3 is bonded via an adhesive (not shown) over substantially the entire width of the absorbent main body 3.

  As described above, the pants-type disposable diaper 1A according to the first embodiment is formed symmetrically with respect to the center line CL, and the elastic elastic part D on the right side of the back side part A and the elastic elastic part D ′ on the left side. Is the same configuration, and the elastic elastic part E on the right side of the ventral side B and the elastic elastic part E ′ on the left side have the same structure. The elastic expansion / contraction part E is demonstrated.

The elastic expansion / contraction part D of the back side part A includes a first trunk part elastic member 23a, a second trunk part elastic member 23b, an auxiliary trunk part elastic member 25a, and a waist elastic member between the outer layer sheet 21 and the inner layer sheet 22. 26a and the lower auxiliary elastic member 27a are fixed in an extended state.
As shown in FIG. 2, the elastic expansion / contraction part D has a back side intersection 24a where the first body elastic member 23a and the second body elastic member 23b intersect.
As shown in FIG. 2, the elastic stretchable part D is located at a part (see FIG. 5) located from the wearer's iliac crest 8 a to the upper anterior iliac spine 8 b when the pant-type disposable diaper 1 A is worn. The first region F1, the second region F2 positioned outward from the first region F1, and the third region F3 positioned inward from the first region F1 are provided.

The first body elastic member 23a is disposed so as to have at least two, preferably 3 to 10, elastic members in a width of preferably 10 to 150 mm, more preferably 30 to 100 mm. .
The 1st trunk | drum elastic member 23a of 1st Embodiment is formed from seven elastic members, as shown in FIG. The seven elastic members are arranged so as not to overlap each other.
As shown in FIG. 2, the elastic member located at the center of the plurality of first body elastic members 23a is formed in the width direction of the pants-type disposable diaper 1A (center ship WL) at the approximate center of the back crossing portion 24a. Is parallel to the width direction greater trochanter center line 7a passing through the center of the greater trochanter 7 at an angle α, from the edge 5a of the leg opening 5 toward the edge of the waist opening 4. Extending in an oblique direction (angle α).
Here, as shown in FIG. 2, the edge 5a of the leg opening 5 of the first embodiment is an elastic member located in the center of the plurality of first body elastic members 23a. 5 is in contact with the peripheral edge, and the contact point is located within a range of 0 to 190 mm from the side edge 2a1 of the side edge 2a.
The angle α is preferably 0 to 90 °, and more preferably 30 to 60 °.

The second body elastic member 23b is preferably disposed so as to have at least two, preferably 3 to 10, elastic members in a width of 10 to 150 mm, more preferably 30 to 100 mm. .
Similar to the first body elastic member 23a, the second body elastic member 23b of the first embodiment is formed of seven elastic members, and the elastic members are arranged so as not to overlap each other. .
As shown in FIG. 2, the elastic member located at the center of the plurality of second body elastic members 23b is arranged in the width direction of the pant-type disposable diaper 1A (center ship WL) at the approximate center of the back-side intersection 24a. And the width direction greater trochanter center line 7a that passes through the center of the greater trochanter 7 and intersects at an angle β from the side edge 2a to the center of the dorsal side A near the crotch C. It extends in an oblique direction (angle β).
Here, as shown in FIG. 2, the side edge 2a of the first embodiment is an elastic member located at the center of the plurality of second body elastic members 23b, and the side edge of the side edge 2a. It is in contact with 2a1 and the contact point is located within the range of 0 to 115 mm from the periphery of the waist opening 4.
The angle β is preferably 0 to 90 °, and more preferably 30 to 60 °.

As shown in FIG. 2, the first torso elastic member 23a and the second torso elastic member 23b are formed by the wearer when the back crossing portion 24a is formed in the pant-type disposable diaper 1A. It arrange | positions so that the site | part of the greater trochanter 7 may be contact | abutted.
Here, the greater trochanter is an anatomical term. The greater trochanter is a portion indicated by reference numeral 7 shown in FIGS. 4 and 5.

In order to arrange the formation position of the dorsal crossing portion 24a so as to abut on the site of the wearer's greater trochanter 7 while wearing the pant-type disposable diaper 1A of the first embodiment, the pant-type disposable diaper 1A The relationship between the dimensions and the wearer's physique is important.
When the person to be worn is an infant, as shown in FIG. 2, a distance W1 between the center of the back-side intersection 24a and the center line CL extending in the longitudinal direction of the pants-type wearing article 1 is preferably 105 to It is 155 mm, More preferably, it is 115-145 mm. Furthermore, the distance L1 between the center of the back-side intersection 24a and the center line WL extending in the width direction of the pant-type wearing article 1 is preferably 145 to 180 mm, and more preferably 155 to 175 mm.

The elastic expansion / contraction part E of the ventral side part B includes a third trunk part elastic member 23c, a fourth trunk part elastic member 23d, an auxiliary trunk part elastic member 25b, and a waist elastic member between the outer layer sheet 21 and the inner layer sheet 22. 26b and the lower auxiliary elastic member 27b are fixed by being stretched.
As shown in FIG. 2, the elastic stretchable part E has a ventral intersection 24b where the third trunk elastic member 23c and the fourth trunk elastic member 23d intersect.
Like the elastic stretchable part D, the elastic stretchable part E has a first region F1, a second region F2 located outward from the first region F1, and a third region F3 located inward from the first region F1. is doing.

The third body elastic member 23c is preferably disposed so as to have at least two or more, preferably 3 to 10 elastic members in a width of 10 to 150 mm, more preferably 30 to 100 mm. .
Similarly to the first body elastic member 23a, the third body elastic member 23c of the present embodiment is formed of seven elastic members, and the elastic members are arranged so as not to overlap each other.
As shown in FIG. 2, the elastic member located at the center of the plurality of third body elastic members 23c is arranged in the width direction of the pant-type disposable diaper 1A (center ship WL) at the approximate center of the ventral intersection 24b. And the width direction iliac center line 8c passing through the center of the iliac crest 8a and the iliac spine 8b at an angle γ, and extending from the side edge 2b of the ventral side B to the waist opening. 4 extends in an oblique direction (angle γ) toward the edge of 4.
Here, as shown in FIG. 2, the side edge portion 2b of the present embodiment is a side edge 2b1 of the side edge portion 2b, which is an elastic member located at the center of the plurality of third body elastic members 23c. The contact point is located within the range of 0 to 115 mm from the periphery of the leg opening 5.
In addition, the angle γ is preferably 0 to 90 °, and more preferably 30 to 60 °.

The fourth body elastic member 23d is disposed so as to have at least two, preferably 3 to 10, elastic members in a width of preferably 10 to 150 mm, more preferably 30 to 100 mm. .
Similarly to the first body elastic member 23a, the fourth body elastic member 23d of the present embodiment is formed of seven elastic members, and the elastic members are arranged so as not to overlap each other.
As shown in FIG. 2, the elastic member located at the center of the plurality of fourth torso elastic members 23d has a width direction (center line WL) of the pants-type disposable diaper 1A at the approximate center of the ventral intersection 24b. Is parallel to the width direction iliac center line 8c passing through the center of the iliac crest 8a and the iliac spine 8b at an angle δ, and extends from the edge 4a of the waist opening 4 to the ventral part B. It extends in an oblique direction (angle δ) toward the center near the crotch C.
Here, as shown in FIG. 2, the edge portion 4 a of the present embodiment is such that the elastic member located at the center of the plurality of fourth body elastic members 23 d is in contact with the peripheral edge of the waist opening 4. The contact point is located within a range of 0 to 190 mm from the side edge 2b1 of the side edge 2b.
Further, the angle δ is preferably 0 to 90 °, and more preferably 30 to 60 °.

As shown in FIG. 2, the third torso elastic member 23c and the fourth torso elastic member 23d are arranged such that when the abdomen-side intersecting portion 24b is worn on the pants-type disposable diaper 1A. It arrange | positions so that the iliac crest 8a and the iliac spine 8b may contact | abut substantially the center part.
Here, the iliac crest and the superior anterior iliac spine are anatomical terms, and the iliac crest and the superior anterior iliac spine are portions indicated by reference numerals 8a and 8a ′ shown in FIG. is there.

In the state where the pants-type disposable diaper 1A of the embodiment is worn, the formation position of the abdominal intersection 24b is arranged so as to come into contact with the substantially central portion of the upper anterior iliac spine 8b from the wearer's iliac crest 8a. Therefore, the relationship between the dimension of the pants-type disposable diaper 1A and the physique of the wearer is important.
In the pants-type disposable diaper 1A of the present embodiment, the distance W1 between the center of the back-side intersecting portion 24a and the center line CL extending in the longitudinal direction of the pants-type disposable diaper 1A is equal to the center of the ventral-side intersecting portion 24b and the longitudinal direction. A distance L1 between the center of the back-side intersection 24a and the center line WL extending in the width direction of the pants-type disposable diaper 1A is longer than the distance W2 between the center-line CL extending to the center of the ventral-side intersection 24b. And a distance L2 between the center line WL extending in the width direction.
When the person to be worn is an infant, the distance W2 is preferably 85 to 135 mm, and more preferably 95 to 125 mm. Furthermore, the distance L2 is preferably 180 to 230 mm, and more preferably 145 to 180 mm.

  As shown in FIG. 2, the first body elastic members 23 a and 23 a ′ of the present embodiment are continuous and oblique from the edge 5 a of the right leg opening 5 toward the edge of the waist opening 4. It extends in the direction (angle α), reaches the edge 5a ′ of the left leg opening 5 ′ via the second region F2 (bypassing the longitudinal end of the absorbent main body 3).

  As shown in FIG. 2, the second body elastic members 23 b and 23 b ′ of the present embodiment are discontinuous, and the side edges 2 a and 2 a ′ of the back side A and the side edges of the absorbent main body 3, respectively. It is distribute | arranged over the part vicinity, and is not distribute | arranged between the side edge part vicinity of the absorptive main body 3. FIG. The fourth body elastic members 23d, 23d ′ of the present embodiment are the same as the second body elastic members 23b, 23b ′ except that the starting point is the edge 4a of the waist opening 4, and are discontinuous. . The 3rd trunk | drum elastic member 23c, 23c 'of this embodiment is discontinuous.

  As shown in FIG. 2, each of the auxiliary body elastic members 25a and 25b of the back side portion A and the ventral side portion B is formed of a plurality of elastic members, and the elastic members do not overlap each other. It is arranged. Each of the auxiliary body elastic members 25a and 25b is arranged in parallel to the width direction (the same direction as the center line WL) of the pants-type disposable diaper 1A. Each of the auxiliary torso elastic members 25a, 25b is a portion from the iliac crest 8a of the wearer's iliac 8 to the superior anterior iliac spine 8 when the pant-type disposable diaper 1A is worn (see FIGS. 4 and 5). It is arranged in the first region F1 located at.

While wearing the pants-type disposable diaper 1A of the first embodiment, the auxiliary trunk part elastic member 25a of the back side part A and the auxiliary trunk part elastic member 25b of the ventral part B are respectively connected from the wearer's iliac crest 8a. In order to place it so as to be located at the site over the upper anterior iliac spine 8b, the relationship between the size of the pants-type disposable diaper 1A and the physique of the wearer is important.
When the person to be worn is an infant, as shown in FIG. 2, an elastic member (in the longitudinal direction of the pants-type disposable diaper 1 </ b> A) located in the center of the plurality of auxiliary trunk elastic members 25 a on the back side A The distance K1 between the center position) and the center line WL extending in the width direction is preferably 180 to 230 mm, and more preferably 145 to 180 mm. The distance between the elastic member (center position along the longitudinal direction of the pants-type disposable diaper 1A) and the center line WL extending in the width direction among the plurality of auxiliary trunk elastic members 25b on the ventral side B K2 is preferably 180 to 230 mm, and more preferably 145 to 180 mm.
When the person to be worn is an adult, the distance K1 is preferably 300 to 350 mm, and more preferably 305 to 335 mm. Furthermore, the distance K2 is preferably 300 to 350 mm, and more preferably 305 to 335 mm.

  The auxiliary body elastic members 25a and 25a 'of the back side A of the first embodiment are continuous and are arranged between the right side edge 2a and the left side edge 2a'. In the region where the absorbent main body 3 is present, the auxiliary body elastic member 25a is arranged between the right side edge 2a and the right side edge of the absorbent main body 3, and the auxiliary body elastic The member 25a ′ is disposed between the left side edge 2a ′ and the left side edge of the absorbent main body 3, and the auxiliary body portion is provided between the side edge portions of the absorbent main body 3. The elastic member is not arranged. The auxiliary trunk part elastic member 25b of the ventral part B is the same as the auxiliary trunk part elastic member 25a.

As shown in FIG. 2, each of the waist elastic members 26a and 26b of the back side portion A and the abdominal side portion B is formed of a plurality of elastic members, and the elastic members are arranged so as not to overlap each other. ing. Each of the waist elastic members 26a and 26b is arranged in parallel to the width direction (the same direction as the center line WL) of the pants-type disposable diaper 1A. Each of the waist elastic members 26a and 26b is disposed in a second region F2 located outward from the first region F1.
The waist elastic members 26a and 26a ′ of the back side portion A of the first embodiment are continuous and are arranged between the right side edge portion 2a and the left side edge portion 2a ′. The waist elastic member 26b of the ventral side B is the same as the waist elastic member 26a.

As shown in FIG. 2, each of the lower auxiliary elastic members 27a and 27b of the back side portion A and the ventral side portion B is formed of a plurality of elastic members, and the elastic members are arranged so as not to overlap each other. Has been. Each of the lower auxiliary elastic members 27a and 27b is arranged in parallel to the width direction (the same direction as the center line WL) of the pants-type disposable diaper 1A. Each of the lower auxiliary elastic members 27a and 27b is disposed in a third region F3 located inward of the first region F1.
The lower auxiliary elastic members 27a and 27a ′ of the back side portion A of the first embodiment are discontinuous, and the lower auxiliary elastic member 27a is connected to the right side edge 2a and the right side edge of the absorbent main body 3. The lower auxiliary elastic member 27 a ′ is arranged between the left side edge 2 a ′ and the left side edge of the absorbent main body 3, and is located on the side of the absorbent main body 3. No lower auxiliary elastic member is disposed between the vicinity of the edges. The lower auxiliary elastic member 27b of the ventral side B is the same as the lower auxiliary elastic member 27a.

  As shown in FIG. 3, the absorbent main body 3 includes a liquid-permeable top sheet 32, a liquid-impermeable or water-repellent back sheet 33, and a liquid-retaining absorption disposed between the sheets 32 and 33. It has a sex core 34 and is substantially vertically long. The absorbent main body 3 is disposed from the back side A to the ventral side B of the outer packaging material 2, and the longitudinal end of the absorbent main body 3 is longer than the longitudinal end of the outer packaging 2. It is in a position retracted inward. The absorptive main body 3 is joined to the inner layer sheet 22 of the outer packaging material 2 by a joining method using an adhesive, heat sealing, ultrasonic sealing or the like.

  The top sheet 32, the back sheet 33, and the absorbent core 34 of the absorbent main body 3 are each rectangular and integrated to form a vertically long absorbent main body 3. As the surface sheet 32, the back surface sheet 33, and the absorptive core 34, the thing similar to what was conventionally used for this kind of diaper can be used, respectively. For example, the absorbent core 34 may be made of absorbent polymer particles and a fiber material and covered with tissue paper (not shown).

  As shown in FIG. 3, side cuffs 35, 35 made of a liquid-resistant or water-repellent and breathable material are provided on both sides in the longitudinal direction of the absorbent main body 3. In the vicinity of the free end of each side cuff 35, a side cuff elastic member 36 is disposed in an expanded state. As for the side cuff 35, the free end side stands up at the time of wearing of a diaper, and the outflow of the liquid to the width direction of the absorptive main body 3 is prevented. The side cuff forming sheet 37 for forming the side cuff 35 has a portion 37 </ b> A having a predetermined width outside the width direction of the absorbent main body 3 being wound down to the skin contact surface side of the absorbent core 34. 34 and the back sheet 33 or between the back sheet 33 and the outer packaging material 2.

The forming material of the pants-type disposable diaper 1A of the first embodiment will be described.
As the outer layer sheet 21 and the inner layer sheet 22, various sheet materials conventionally used for this type of article can be used without particular limitation, but is preferably a nonwoven fabric, particularly from the viewpoint of flexibility and the like. It is preferably a single layer sheet or a laminated sheet made of an air-through nonwoven fabric, a heat roll nonwoven fabric, a spunlace nonwoven fabric, a spunbond nonwoven fabric, a melt blown nonwoven fabric or the like. The nonwoven fabric used as the outer layer sheet 21 and the inner layer sheet 22 is preferably a water-repellent nonwoven fabric from the viewpoint of reducing damage of leaked urine.

  The first body elastic members 23a, 23a ′, the second body elastic members 23b, 23b ′, the third body elastic members 23c, 23c ′, the fourth body elastic members 23d, 23d ′, the auxiliary The body elastic members 25a, 25a ', 25b, 25b', the waist elastic members 26a, 26a ', 26b, 26b' and the lower auxiliary elastic members 27a, 27a ', 27b, 27b' are formed as disposable materials. Various known elastic materials used for absorbent articles such as diapers and sanitary napkins can be used without particular limitation. Examples of the elastic material include synthetic rubber such as styrene-butadiene, butadiene, isoprene, and neoprene, natural rubber, EVA, stretchable polyolefin, and polyurethane. As the form of the elastic member, a thread-like (thread rubber etc.) or string-like (flat rubber etc.) cross section having a rectangular, square, circular, polygonal shape, or a multifilament type thread-like one can be used. .

Next, the effect at the time of using the underpants type disposable diaper 1A of 1st Embodiment of this invention mentioned above is demonstrated.
As shown in FIGS. 1 to 3, the pant-type disposable diaper 1 </ b> A according to the first embodiment has elastic stretchable portions D and D ′ on the left and right sides of the back side portion A, and the left and right elastic stretchable portions D and D ′. Each includes first torso elastic members 23a and 23a ′ and second torso elastic members 23b and 23b ′.
As shown in FIG. 2, the first body elastic members 23a, 23a ′ extend in an oblique direction (angle α) from the edges 5a, 5a ′ of the leg opening 5 toward the edge of the waist opening 4, The second torso elastic members 23b and 23b ′ extend in an oblique direction (angle β) from the side edges 2a and 2a ′ of the back side A toward the center of the back side A near the crotch C. . Further, as shown in FIG. 2, the first torso elastic members 23a and 23a ′ and the second torso elastic members 23b and 23b ′ are arranged such that the back crossing portions 24a and 24a ′ are formed in a pants-type disposable diaper 1A. It is arranged so as to come into contact with the site of the wearer's greater trochanter 7 when the wearer is worn.
Thus, since 1st trunk | drum elastic member 23a, 23a 'and 2nd trunk | drum elastic member 23b, 23b' are distribute | arranged, even if it does not comprise an elastic member around a leg, it is a pants type disposable diaper 1A. Since the absorbent main body 3 fits the wearer without slipping off, leakage of body fluid can be prevented. Moreover, since the elastic member is not provided around the leg, the rubber mark is not left around the wearer's leg.

Further, the pants-type disposable diaper 1A of the first embodiment has elastic stretchable parts E and E ′ on the left and right sides of the ventral side B, as shown in FIGS. , E ′ are provided with ventral crossing portions 24b, 24b ′ formed by intersecting the third elastic members 23c, 23c ′ and the fourth body elastic members 23d, 23d ′.
As shown in FIG. 2, the third torso elastic members 23c, 23c ′ extend in an oblique direction (angle γ) from the side edges 2b, 2b ′ of the ventral side B toward the edges of the waist opening 4. The fourth body elastic members 23d, 23d ′ extend in an oblique direction (angle δ) from the edge of the waist opening 4 toward the center of the ventral side B near the crotch C.
Further, in the pant-type disposable diaper 1A of the first embodiment, the distance W1 between the center of the back intersection 24a and the center line CL extending in the longitudinal direction is the center extending in the longitudinal direction from the center of the ventral intersection 24b. A distance L1 between the center of the back intersection 24a and the center line WL extending in the width direction is longer than the distance W2 between the line CL and the center line WL extending in the width direction from the center of the ventral intersection 24b. Thus, since the third elastic members 23c and 23c ′ and the fourth body elastic members 23d and 23d ′ are arranged, the elastic members are provided around the legs. Even if it is not, the pants-type disposable diaper 1 </ b> A is not further displaced and the absorbent main body 3 fits the wearer, so that body fluid can be prevented from leaking.

Further, the pant-type disposable diaper 1A according to the first embodiment includes left and right elastic elastic parts D and D ′ on the back side A and left and right elastic elastic parts E on the abdominal side B as shown in FIGS. , E ′ have auxiliary body elastic members 25a, 25a ′, 25b, 25b ′.
As shown in FIG. 2, each of the auxiliary body elastic members 25a, 25a ′, 25b, and 25b ′ is arranged in parallel to the width direction (the same direction as the center line WL) of the pants-type disposable diaper 1A. Each of the elastic members 25a, 25a ′, 25b, 25b ′ is arranged so as to be located at a site from the wearer's iliac crest 8a to the upper anterior iliac spine 8b when the pants-type disposable diaper 1A is worn. Yes.
Thus, since auxiliary | assistant trunk | drum elastic member 25a, 25a ', 25b, 25b' is arrange | positioned, it can make it easy to support 1 A of pants type disposable diapers with an iliac bone, and also the fit property to a wearer is further improved. Can be increased.

Next, the underpants type disposable diaper of 2nd Embodiment of this invention is demonstrated based on FIG.6 and FIG.7.
About the underpants type disposable diaper 1B of 2nd Embodiment, a different point from the underpants type disposable diaper 1A of 1st Embodiment is demonstrated. The point which is not demonstrated in particular is the same as that of the pants-type disposable diaper 1A of the first embodiment, and the description of the pants-type disposable diaper 1A of the first embodiment is applied as appropriate.

As shown in FIG. 6, the pants-type disposable diaper 1 </ b> B of the second embodiment has elastic stretchable parts E and E ′ on the left and right sides of the abdominal side B, and the left and right elastic stretchable parts E and E ′ are respectively Two sheet materials 21 and 22 and fifth elastic members 23e and 23e 'disposed between the two sheet materials 21 and 22 are provided.
The fifth torso elastic members 23e and 23e ′ extend obliquely from the edge 4a of the waist opening 4 toward the side edge 2b of the ventral side B, and the fifth torso elastic members 23e and 23e ′ It arrange | positions so that it may connect with the corresponding position 2a2 of the side edge part 2a of the 2nd trunk | drum elastic member 23b of the back side part A. FIG.

The fifth body elastic members 23e and 23e 'are preferably arranged so as to have at least two, preferably 3 to 10 elastic members in a width of 10 to 150 mm, more preferably 30 to 100 mm. Has been.
Similarly to the first body elastic member 23a, the fifth body elastic member 23e of the second embodiment is formed of seven elastic members, and the elastic members are arranged so as not to overlap each other. .
As shown in FIG. 6, the elastic member located in the center among the plurality of fifth body elastic members 23e is arranged in parallel to the width direction of the pants-type disposable diaper 1B (the same direction as the center line WL). It intersects with the elastic member located at the center of the plurality of waist elastic members 26b at an angle ε, and obliquely (angle) from the edge 4a of the waist opening 4 toward the side edge 2b of the ventral side B e). As shown in FIGS. 6 and 7, the fifth body elastic member 23e is disposed so as to be connected to the corresponding position 2a2 of the side edge 2a of the second body elastic member 23b of the back side A. The fifth body elastic member 23e and the second body elastic member 23b are continuously arranged in a straight line.
Here, as shown in FIG. 6, the edge 4a of the waist opening 4 of the present embodiment is an elastic member located at the center of the plurality of fifth body elastic members 23e. The contact point is located in the range of 0 to 190 mm from the side edge 2b1 of the side edge 2b.
Moreover, the angle ε is preferably 0 to 90 °, and more preferably 30 to 60 °.
As the forming material of the fifth torso elastic members 23e and 23e ′, various known elastic materials used for absorbent articles such as disposable diapers and sanitary napkins are particularly limited as in the case of the first torso elastic member 23a. Can be used.

Next, the effect at the time of using the underpants type disposable diaper of 2nd Embodiment of this invention mentioned above is demonstrated.
As shown in FIGS. 6 and 7, the pants-type disposable diaper 1B of the second embodiment has elastic elastic portions D and D ′ on the left and right sides of the back side portion A, and the left and right elastic elastic portions D and D ′. Each includes first torso elastic members 23a and 23a ′ and second torso elastic members 23b and 23b ′.
Since the first torso elastic members 23a and 23a ′ and the second torso elastic members 23b and 23b ′ are arranged in the same manner as the pant-type disposable diaper 1A of the first embodiment, the legs are provided with elastic members. Even if not, the pants-type disposable diaper 1 </ b> B does not fall off, and the absorbent main body 3 fits the wearer, so that leakage of body fluid can be prevented. Moreover, since the elastic member is not provided around the leg, the rubber mark is not left around the wearer's leg.

  Furthermore, as shown in FIGS. 6 and 7, the pants-type disposable diaper 1 </ b> B of the second embodiment has fifth body elastic members 23 e and 23 e ′ that are located on the ventral side B from the edge 4 a of the waist opening 4. Since it is arranged to extend in an oblique direction (angle ε) toward the side edge 2b and to be connected to the corresponding position 2a2 of the side edge 2a of the second body elastic member 23b of the back side A, Even if it does not comprise an elastic member, the pants-type disposable diaper 1B is not further displaced and the absorbent main body 3 fits the wearer, so that leakage of body fluid can be prevented.

Next, the pants-type disposable diaper of 3rd Embodiment of this invention is demonstrated based on FIG.
About the underpants type disposable diaper 1C of 3rd Embodiment, a different point from the underpants type disposable diaper 1A of 1st Embodiment is demonstrated. The point which is not demonstrated in particular is the same as that of the pants-type disposable diaper 1A of the first embodiment, and the description of the pants-type disposable diaper 1A of the first embodiment is applied as appropriate.

As shown in FIG. 8, the pant-type disposable diaper 1C of the third embodiment has elastic stretchable parts D and D ′ on the left and right sides of the back side part A, but the pant-type disposable diaper of the first embodiment. Unlike 1A, when the pants-type disposable diaper 1A is worn, the auxiliary region elastic members 25a, 25a ′ are located in the first region F1 located at the site from the wearer's iliac crest 8a to the upper anterior iliac spine 8b. Is a form that is not arranged.
In addition, the pant-type disposable diaper 1C of the third embodiment has elastic stretchable parts E and E ′ on the left and right sides of the abdominal side B as shown in FIG. Unlike the disposable diaper 1A, the first body F1 is not provided with the auxiliary body elastic members 25b and 25b ′, and the third body elastic members 23c and 23c ′ and the fourth body elastic members 23d and 23d ′. None of these are arranged.

Next, the effect at the time of using the underpants type disposable diaper of 3rd Embodiment of this invention mentioned above is demonstrated.
As shown in FIG. 8, the pants-type disposable diaper 1C of the third embodiment includes auxiliary trunk elastic members 25a, 25a ′, 25b, 25b ′, third trunk elastic members 23c, 23c ′, and fourth trunk elasticity. Neither of the members 23d and 23d ′ is arranged, but the left and right elastic elastic parts D and D ′ of the back side part A are respectively connected to the first body elastic members 23a and 23a ′ and the second body elastic members 23b, 23b '.
Since the first torso elastic members 23a and 23a ′ and the second torso elastic members 23b and 23b ′ are arranged in the same manner as the pant-type disposable diaper 1A of the first embodiment, the legs are provided with elastic members. Even if not, the pants-type disposable diaper 1 </ b> C does not fall off and the absorbent main body 3 fits the wearer, so that leakage of body fluid can be prevented. Moreover, since the elastic member is not provided around the leg, the rubber mark is not left around the wearer's leg.

  The pants-type wearing article of the present invention is not limited to the pants-type disposable diapers of the first to third embodiments described above, and can be appropriately changed. Moreover, each component in the underpants type disposable diaper of the above-mentioned 1st-3rd embodiment can be implemented in combination suitably in the range which does not impair the meaning of this invention.

  For example, in the pants-type disposable diapers 1A, 1B, and 1C of the first to third embodiments described above, the outer packaging material 2 has a back side portion A, a crotch portion C, and an abdominal side portion B in the longitudinal direction. However, the outer packaging material 2 may be separated into two parts, a back side part A and a ventral side part B.

  In the pants-type disposable diapers 1A, 1B, and 1C of the first to third embodiments described above, the first torso elastic members 23a and 23a ′, the second torso elastic members 23b and 23b ′, and the third torso The elastic members 23c and 23c ′, the fourth body elastic members 23d and 23d ′, the fifth body elastic members 23e and 23e ′, and the auxiliary body elastic members 25a, 25a ′, 25b, and 25b ′ each include the outer packaging material 2. Although it distribute | arranges between the outer layer sheet | seat 21 and the inner layer sheet | seat 22 to comprise, you may distribute | arrange to the outer packaging material 2 which comprises only either the outer layer sheet | seat 21 or the inner layer sheet | seat 22. FIG.

  In the pants-type disposable diapers 1A, 1B, 1C of the first to third embodiments described above, the first body elastic members 23a, 23a ′ are present in the second region F2, as shown in FIG. Although continuous, it does not exist in the second region F2 and may be discontinuous.

  In the pants-type disposable diapers 1A, 1B, and 1C of the first to third embodiments described above, the second torso elastic members 23b and 23b ′, the fourth torso elastic members 23d and 23d ′, and the auxiliary torso elastic member 25a, 25b and the lower auxiliary elastic members 27a, 27b are not arranged between the side edge portions of the absorbent main body 3, but are present if it is difficult to form a wrinkle on the absorbent main body 3. For example, you may exist in the state which does not express elastic stretchability by dividing | segmenting an elastic member finely. Moreover, you may exist in the state which does not express elastic stretching property by providing heat.

  In the pants-type disposable diapers 1A, 1B, and 1C of the first to third embodiments described above, the first body elastic members 23a and 23a ′ and the second body elastic members 23b and 23b ′ on the back side A are provided. In addition, the number of the elastic members constituting the third body elastic members 23c, 23c ′ and the fourth body elastic members 23d, 23d ′ of the ventral portion B is the same number of seven, but may not be the same. good.

  Moreover, in the underpants type disposable diaper 1A, 1B, 1C of the above-mentioned first to third embodiments, the leg elastic member is not arranged, but an elastic member may be arranged on the peripheral edge of the leg opening.

  In addition to the pants-type disposable diaper, the present invention can be suitably used for absorbent articles such as a pants-type sanitary napkin.

It is the perspective view seen from the back side part of the underpants type disposable diaper which is a 1st embodiment of the present invention. It is an expansion | deployment top view which shows the state which expand | deployed and expanded the underpants type disposable diaper shown in FIG. It is a disassembled perspective view of the underpants type disposable diaper shown in FIG. It is a figure which shows the state equipped with the underpants type disposable diaper shown in FIG. It is explanatory drawing which shows the iliac bone of a human body. It is an expansion | deployment top view which shows the state which expand | deployed and expanded the underpants type disposable diaper which is 2nd Embodiment of this invention. It is a top view of the underpants type disposable diaper shown in FIG. It is an expansion | deployment top view which shows the state which expand | deployed and expanded the underpants type disposable diaper which is 3rd Embodiment of this invention.

Explanation of symbols

1A, 1B, 1C Pants-type disposable diaper 2 Outer packaging material 2a Side edge part 2b of back side part A 2b Side edge part of ventral side part 21 Outer layer sheet 21B Extension region 22 Inner layer sheet 23a, 23a 'First trunk elastic member 23b, 23b ′ second torso elastic member 23c, 23c ′ third torso elastic member 23d, 23d ′ fourth torso elastic member 23e, 23e ′ fifth torso elastic member 24a, 24a ′ dorsal intersection 24b, 24b 'ventral crossing 25a, 25a', 25b, 25b 'auxiliary body elastic member 26a, 26a', 26b, 26b 'waist elastic member 27a, 27a', 27b, 27b 'lower auxiliary elastic member 3 absorbent main body 32 Top sheet 33 Back sheet 34 Absorbent core 35 Side cuff 36 Side cuff elastic member 37 Side cuff forming sheet 4 Waist opening 4a Edge 5 of waist opening 4 5 'leg opening 5a, 5a' leg opening 5, 5 'edge 6, 6' side seal part 7 greater trochanter 7a widthwise greater trochanter centerline 8 iliac bone 8a iliac crest 8b iliac spine 8c Width direction iliac center line A dorsal side B ventral side C crotch D, D 'elastic stretchable part E, E' dorsal side A elastic stretchable part of ventral side B

Claims (5)

A pants-type wearing article in which both side edges of the abdominal side and both side edges of the back side are joined to each other and have a waist opening and a pair of leg openings,
Has elastic elastic parts on the left and right of the back side part,
Each of the left and right elastic expansion / contraction parts includes a back-side intersection formed by intersecting a first trunk elastic member and a second trunk elastic member arranged on the outer packaging material,
The first and second torso elastic members are arranged such that the formation position of the dorsal intersection is in contact with the wearer's greater trochanter when the pant-type wearing article is worn. And
Has elastic stretch parts on the left and right sides of the ventral side,
Each of the left and right elastic expansion / contraction parts includes a ventral intersection formed by intersecting a third trunk elastic member and a fourth trunk elastic member arranged in the outer packaging material,
Each of the first, second, third and fourth body elastic members extends in an oblique direction,
The first body elastic member extends from an edge of the leg opening toward an edge of the waist opening;
The second torso elastic member extends from the side edge of the back side toward the center of the back side near the crotch,
The third torso elastic member extends from the side edge of the ventral side toward the edge of the waist opening,
The said 4th trunk | drum elastic member is the underpants type wearing article extended toward the center part near the crotch part of the said stomach side part from the edge part of the said waist opening part . The distance between the center of the back crossing portion and the center line extending in the longitudinal direction of the pants-type wearing article is longer than the distance between the center of the ventral crossing portion and the center line,
The distance between the center line extending in the width direction of the center of the pants-type wearing article of the dorsal crossing portion, according to a short claim 1 than the distance between the center and the center line of the ventral side intersection Pants-type wearing article. Each of the elastic elastic parts on the left and right of the back side part and / or the abdominal side part has an auxiliary body elastic member arranged on the outer packaging material, and the auxiliary body elastic member extends in the width direction of the pants-type wearing article. The pants-type wear according to claim 1 or 2 , wherein the pants-type wear is arranged in parallel and located so as to be located at a site from the wearer's iliac crest to the upper anterior iliac spine when the pant-type wearing article is worn. Goods. Pant-type wearing article according to any one of claim 1 to 3, wherein the outer material is made of two sheet materials. The first to fourth torso elastic members and the auxiliary torso elastic member are all or at least one made of a plurality of elastic members, so that the plurality of elastic members do not overlap each other. The underpants type wearing article of any one of Claims 1-4 arrange | positioned.

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