JP4108616B2 - Pants-type disposable wearing articles - Google Patents

Description

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

  A front waist area and a back waist which are composed of a liquid-absorbing panel extending in the vertical direction and belt-like stretchable first and second outer sheets which are located outside the panel and form a ring in the waist direction. There is a pants-type disposable wearing article having a surrounding area and a crotch area which is located between the waist area and bends in a U shape, and which has a waist opening and a pair of leg openings opened on both sides of the crotch area (See Patent Document 1). In this article, the first outer sheet forms a front waistline region, the second outer sheet forms a rear waistline region, and the panel forms a part of the front and back waistline region and a crotch region.

The panel is formed from a liquid-permeable top sheet, a liquid-impervious back sheet, and a liquid-absorbent core interposed between the front and back sheets, and both end portions extending in the circumferential direction and both side portions extending in the vertical direction. And have. The first and second outer sheets have an upper edge portion extending in the waistline direction, a lower edge portion located on the crotch region side and extending in the waistline direction, and positioned between the upper and lower edges and extending in the waistline direction. And a connecting portion that extends above the leg opening and extends in the vertical direction. In the connecting portion, the upper and lower edge portions and the intermediate portion of the outer sheets overlap with each other in a palm-like shape, and these portions are fixed through a plurality of heat-sealing wires arranged intermittently in the vertical direction. In this article, the lower edge portions of the first and second outer sheets are fixed to the outer surface of the panel, and the entire both ends of the panel are fixed to the inner surfaces of the intermediate portions of the first and second outer sheets. In this article, the upper edge of the outer sheet forms a waist opening, and both side parts of the panel and a part of the lower edge of the outer sheet form a leg opening.
JP 2003-290284 A

  In the wearing article disclosed in Patent Document 1, the leg openings are not opened on both sides of the front and rear waist area, but are opened only on both sides of the crotch area. Therefore, the opening area of the leg opening is small, and the leg of the wearer is legged. When passing through the opening, the toes and heels may be caught on both sides of the panel surrounding the leg opening and the lower edge of the outer sheet, and it may take time to wear the article.

  An object of the present invention is to provide a pants-type disposable wearing article that allows a wearer's foot to be easily passed through a leg opening and does not take time to wear.

  The premise of the present invention to solve the above problems is a pant having front and rear waist regions and crotch regions located between the waist regions and a waist opening and a pair of leg openings, and front and rear of the pants. It is composed of a belt-shaped outer sheet that is located outside the waist area and forms a ring in the waist direction, and the pants surround the waist opening and the waist circumference that extends in the waist direction and the leg opening. A leg periphery extending in the vertical direction, and the outer sheet is located on the side of the crotch region of the pants and an upper edge extending in the waist direction in parallel to the waist periphery of the pants A pants-type disposable wearing article having a lower edge portion extending in the direction and an intermediate portion located between the upper and lower edge portions and extending in the waist circumference direction.

  The feature of the present invention in the above premise is that the leg periphery is formed of a waist part extending to the front and back waist areas excluding the waist periphery and a crotch part extending to the crotch area, and the leg opening is the front and back waist area. An upper opening that is open on both sides of the region and covered with an outer sheet, and a lower opening that is continuous with the upper opening and opens on both sides of the crotch region, and the upper edge of the outer sheet is the periphery around the waist of the pants And at least the lower edge part of the middle part and the lower edge part of the outer sheet is fixed to the center part in the waist circumference direction of the front and rear waist area of the pants. In this article, the leg opening opens not only on both sides of the crotch area but also on both sides of the front and rear waist area, the opening area of the leg opening is large, and the entire leg opening is exposed by turning up the part of the outer sheet covering the upper opening To do.

The present invention has the following embodiments.
(1) In an example of an embodiment of the present invention, a plurality of waistline elastic members extending in the waistline direction with a predetermined distance apart in the vertical direction are attached to the upper and lower edges and the middle part of the outer sheet so as to be shrinkable. The leg elastic member extending in the longitudinal direction is retractably attached to the crotch part of the leg periphery and the waist part located on the side of the crotch part, and extends to the waist part. Both ends in the vertical direction intersect the elastic member for the waistline extending to the lower edge of the outer sheet. In the article of this aspect, the upper and lower edge portions and the intermediate portion of the outer sheet fasten the wearer's torso, and the leg-surrounding elastic member and the waist-surrounding elastic member attached to the lower edge of the outer seat cooperate. Work and tighten the wearer's thigh.
(2) In another example of the embodiment of the present invention, the outer sheet has elastic stretchability in the waist direction, and the leg-hole elastic member extending in the vertical direction has a crotch portion in the leg periphery. It is attached to the waist part located in the crotch part side so that contraction is possible, and the longitudinal direction both ends of the elastic member for leg circumferences extended to the waist part cross the lower edge part of an outer sheet. In the article of this aspect, the outer sheet tightens the wearer's torso, and the leg-around elastic member and the lower edge of the outer sheet cooperate to tighten the wearer's thigh.
(3) In another example of the embodiment of the present invention, the outer sheet has a connecting portion that extends in the longitudinal direction and is located at the center portion in the waist circumference direction of at least the front waist circumference region of the front and rear waist circumference regions of the pants. In the connecting portion, the upper and lower edge portions and the intermediate portion of the outer sheet are fixed to each other in a state where one of them overlaps the other outer side.
(4) In another example of the embodiment of the present invention, a plurality of auxiliary elastic members that are positioned between the peripheral edges of the legs of the pants and extend in the vertical direction are formed of the front and rear waist areas and the crotch area of the pants. At least the crotch region is shrinkably attached. In the article of this aspect, the contraction force of the auxiliary elastic member lifts at least the crotch region of the pants toward the waist opening.
(5) In another example of the embodiment of the present invention, the auxiliary elastic member reaches the waist periphery from the crotch region of the pants through the front and back waist region. In the article of this aspect, the contraction force of the auxiliary elastic member lifts the entire pants toward the waist opening.

  According to the pants-type disposable wearing article according to the present invention, the leg opening is formed of an upper opening that opens on both sides of the front and rear waist area and a lower opening that opens on both sides of the crotch area. The opening area of the leg opening is large compared to a prior art article that opens only on both sides of the area. In this article, at least the lower edge part of the middle part and the lower edge part of the outer sheet is fixed only to the center part in the waist circumference direction of the front and rear waist area of the pants, so the part of the outer sheet covering the upper opening Can be turned up toward the waist opening, and further, the entire leg opening with a large opening area can be exposed by turning up the outer seat part, so that the leg of the wearer's foot can be opened when wearing the article. Can be easily passed through. Since this article can prevent the wearer's toes and heels from being caught on the peripheral edge of the pants leg when worn, it does not take time to wear the article. In this article, at least the lower edge part of the middle part and the lower edge part of the outer sheet is fixed to the center part in the waist circumference direction of the front and rear waist area of the pants. The outer sheet does not turn inadvertently from the edge to the upper edge, and the outer sheet moves freely following the movement of the wearer's thigh. It does not restrain movement.

  A plurality of waist elastic members are attached to the upper and lower edges and the middle of the outer sheet so as to be shrinkable, and the leg elastic members are located on the crotch portion and the crotch portion side of the leg periphery. In an article that is shrinkably attached to the waistline portion, the waistline elastic member tightens the wearer's torso, so that the article can be prevented from slipping down during wearing. This article intersects with the waist elastic member whose longitudinal ends of the leg elastic member extend to the lower edge of the outer sheet, and the leg elastic member and the waist elastic member Since the entire portion is surrounded and the elastic members cooperate to tighten the wearer's thigh, leakage of body fluid from the leg opening during wearing of the article can be prevented. In this article, since the leg elastic member is attached to the whole crotch part of the leg circumference and a part of the waist part on the side of the crotch part, and is not attached to the whole waist part. Even if the leg elastic member contracts, the entire leg periphery does not shrink, and the opening area of the leg opening does not shrink more than necessary. This article can keep the opening area of the leg opening at a certain size, and can reliably prevent the wearer's toes and hooks from being caught on the peripheral edge of the leg of the pants.

  The outer sheet has elastic elasticity in the waist direction, and the elastic members for the legs can be contracted to the crotch part of the leg periphery and the waist part located on the side of the crotch part. In the attached article, the outer sheet tightens the wearer's torso, so that the article can be prevented from slipping down during wearing. In this article, both longitudinal ends of the leg elastic member intersect the lower edge of the outer sheet, and the entire thigh of the wearer is surrounded by the leg elastic member and the lower edge of the outer sheet. Since the elastic member and the outer sheet cooperate to tighten the wearer's thigh, leakage of body fluid from the leg opening during wearing of the article can be prevented. In this article, since the leg elastic member is attached to the whole crotch part of the leg circumference and a part of the waist part on the side of the crotch part, and is not attached to the whole waist part. Even if the leg elastic member contracts, the entire leg periphery does not shrink, and the opening area of the leg opening does not shrink more than necessary. This article can keep the opening area of the leg opening at a certain size, and can reliably prevent the wearer's toes and hooks from being caught on the peripheral edge of the leg of the pants.

  In an article in which the outer sheet has a connecting portion and one of the upper and lower edges and the middle portion of the outer sheet overlaps the other outside of the connecting portion, the connecting portion of the outer sheet has a leg opening. The upper and lower edges and the middle part are less likely to come into contact with the wearer's skin as compared with the prior art article in which the upper and lower edges and the middle part overlap each other at the connecting part. Can prevent discomfort caused by contact with the skin of the wearer.

  An article in which a plurality of auxiliary elastic members extending in the longitudinal direction are attached to at least the crotch region of the front and rear waist regions and the crotch region so as to be contractible is particularly a portion of these regions by the contraction force of the elastic member. Since the crotch region is lifted toward the waist opening, the crotch region of the pants can be brought into close contact with the wearer's skin.

  In an article in which the auxiliary elastic member reaches the waistline edge from the crotch region of the pant through the front and back waist region, the front and back waist region and the crotch region are lifted toward the waist opening by the contraction force of the elastic member. The whole can be brought into close contact with the wearer's skin.

  The details of the pants-type disposable wearing article according to the present invention will be described below with reference to the accompanying drawings.

  1 and 2 are a perspective view of a wearing article 20A shown as an example, and a partially broken perspective view of the article 20A of FIG. 1, and FIGS. 3 and 4 are diagrams showing the pants 21 and the outer sheet 22 separated from each other. 4 is an exploded perspective view of one article 20A and a cross-sectional view taken along line 4-4 in FIG. In FIG. 1, the direction around the trunk is indicated by an arrow L, and the vertical direction is indicated by an arrow M. In FIGS. 2 and 3, hatching (diagonal lines) is provided at the fixing portion between the pants 21 and the outer sheet 22. The article 20 </ b> A is worn along with the pad 47 with the body fluid absorption pad 47 placed on the inside of the pants 21.

  The article 20 </ b> A includes a pant 21 and an outer sheet 22 that draws a ring around the trunk. The pants 21 are made of two hydrophobic fiber nonwoven fabrics whose opposite surfaces are intermittently fixed in an overlapping state. The nonwoven fabric is preferably subjected to a water repellent treatment. The pants 21 are air-impermeable and liquid-impervious so that body fluid does not enter and body fluid does not permeate. The pants 21 have a front waistline region 23 and a back waistline region 25 that face each other, and a crotch region 24 that is located between the waistline regions 23 and 25 and bends in a U shape. The pants 21 are formed with a waist opening 26 and a pair of leg openings 27. The pants 21 have a waist periphery 28 that surrounds the waist opening 26 and extends in the waist direction, and a leg periphery 29 that surrounds the leg opening 27 and extends in the vertical direction.

  The leg opening 27 is formed by an upper opening 30 that opens on both sides of the front and rear waist regions 23 and 25, and a lower opening 31 that opens on both sides of the crotch region 24 and continues to the upper opening 30. The upper opening 30 is covered with a portion 32 of the outer sheet 22. The waist periphery 28 has a connecting portion 33 located above the leg opening 27. The connecting portions 33 of the waist circumference 28 are fixed to each other in a state where one portion 33 overlaps the outside of the other portion 33.

  The leg-periphery peripheral edge portion 29 forms an arc toward the inside of the trunk periphery. The leg-periphery peripheral edge portion 29 is formed of a waist-peripheral portion 34 that extends to the front and rear waist-periphery regions 23 and 25 excluding the waist-periphery peripheral portion 28, and a crotch portion 35 that extends to the crotch region 24. The waist portion 34 is located inside the outer sheet 22 and surrounds the upper opening 30. The crotch portion 35 surrounds the lower opening 31. A plurality of leg elastic members 36 extending in the vertical direction are attached to the leg peripheral edge 29 so as to be contractible.

  The leg-surrounding elastic member 36 is attached to the entire crotch portion 35 and a part of the waistline portion 34 located on the side of the crotch portion 35 in the leg periphery periphery 29, and is attached to the entire waistline portion 34. It is not done. The elastic member 36 is encased in a non-woven fabric and is fixed to the non-woven fabric in a state of being stretched at a predetermined magnification in the longitudinal direction. The longitudinal end portions 37 of the leg-surrounding elastic member 36 extending to the waistline portion 34 three-dimensionally intersect with the waistline elastic member 46 attached to the lower edge portion 41 described later of the outer sheet 22.

  A plurality of auxiliary elastic members 38 extending in the longitudinal direction and spaced apart from each other by a predetermined dimension in the waist circumference direction are attached between the leg circumferences 29 so as to be contractible. The elastic member 38 extends from the crotch region 24 through the front and rear waist regions 23 and 25 to the waist periphery 28. The elastic member 38 is interposed between the nonwoven fabrics, and is fixed to the opposing surface of the nonwoven fabric in a state where the elastic members 38 are stretched at a predetermined magnification in the longitudinal direction.

  In the pants 21, the extension of the leg-around elastic member 36 is released, and the crotch part 35 and the waist part 34 located on the side of the crotch part 35 are contracted in the vertical direction due to the contraction of the elastic member 36. A gather is formed in a part and the entire crotch part 35. Further, the extension of the auxiliary elastic member 38 is released, and the front and rear waist regions 23 and 25 and the crotch region 24 are contracted in the vertical direction by the contraction of the elastic member 38, and gathers are formed in these regions 23, 24, and 25. .

  The outer sheet 22 is made of two hydrophobic fiber nonwoven fabrics whose opposite surfaces are intermittently fixed in an overlapping state (see FIG. 4). The nonwoven fabric is preferably subjected to a water repellent treatment. The outer sheet 22 is air-impermeable and liquid-impervious and does not allow body fluid to permeate or permeate through the body fluid. The outer sheet 22 includes an upper edge 39 extending in the waist circumference direction in parallel with the waist circumference edge 28 of the pants 21, a lower edge 41 positioned on the crotch region 24 side and extending in the waist circumference direction, and upper and lower edges And an intermediate portion 40 located between the portions 39 and 41 and extending in the circumferential direction. The outer sheet 22 has a connecting portion 43 that is positioned in the waist-circumferential direction central portion 42 of the front waist area 23 of the pants 21 and extends in the vertical direction. In the connecting portion 43, one of the upper and lower edge portions 39, 41 and the intermediate portion 40 overlaps the other outer side, the upper edge portions 39 are fixed to each other, the intermediate portions 40 are fixed to each other, and the lower edge portions 41 are connected to each other. It is fixed. A plurality of waistline elastic members 44, 45, 46 are attached to the upper and lower edges 39, 41 and the intermediate part 40 of the outer sheet 22 so as to be shrinkable and extend in the waistline direction with a predetermined distance in the vertical direction. ing. These elastic members 44, 45 and 46 form a ring in the direction around the trunk.

  The elastic member 44 disposed on the upper edge portion 39 is encased in a non-woven fabric, and is fixed to the non-woven fabric in a state where it is stretched at a predetermined magnification in the circumferential direction. The elastic members 45 and 46 disposed in the intermediate portion 40 and the lower edge portion 41 are interposed between the nonwoven fabrics, and are fixed to the opposing surfaces of the nonwoven fabric in a state where the elastic members 45 and 46 are stretched at a predetermined magnification in the circumferential direction. In the outer sheet 22, the extension of the elastic members 44, 45, 46 for the waistline is released, and the contraction of the elastic members 44, 45, 46 causes the sheet 22 to shrink in the waistline direction, and the upper and lower portions 39, 41 of the sheet 22 A gather is formed in the intermediate portion 40. The number of the elastic members 44 arranged at the upper edge portion 39 is larger than that of the elastic members 45 and 46 arranged at the intermediate portion 40 and the lower edge portion 41, and the vertical separation dimension is larger than that of the intermediate portion 40. And smaller than that of the elastic members 45 and 46 arranged at the lower edge portion 41. In the outer sheet 22, the elongation stress in the waist direction in the upper end portion 39 is larger than that in the waist direction in the intermediate portion 40 and the lower edge portion 41.

  In the outer sheet 22, the entire upper edge portion 39 is continuously fixed to the entire waist periphery 28 of the pants 21, and the middle portion 40 and the lower edge portion 41 are around the waist of the front and rear waist regions 23 and 25 of the pants 21. It is continuously fixed to the central portion 42 in the direction. The upper edge portion 39 is fixed to the pants 21 at a portion other than the portion where the waistline elastic member 44 is disposed. The intermediate portion 40 and the lower edge portion 41 are not fixed to the pants 21 except for the middle portion 42 in the waistline direction.

  The pad 47 has a vertically long rectangle, and is disposed between the liquid-permeable surface sheet 48 positioned on the skin contact side, the liquid-impermeable back sheet 49 positioned on the skin non-contact side, and the front and back sheets 48 and 49. The liquid-absorbent core 50 is interposed between the sheets 48 and 49 and joined to the inner surfaces thereof. In the pad 47, the peripheral portions of the front and back sheets 48 and 49 extending outward in the circumferential direction from the peripheral edge of the core 50 are fixed in an overlapping state. An adhesive 51 is partially applied to the outer surface of the back sheet 49. The pad 47 is detachably secured to the inside of the pants 21 via the adhesive 51 (see FIG. 4).

  The top sheet 48 is made of a hydrophilic fiber nonwoven fabric. The back sheet 49 is made of a hydrophobic fiber nonwoven fabric that has been subjected to a water repellent treatment. The core 50 is a mixture of particulate or fibrous superabsorbent polymer and fluff pulp, or a mixture of particulate or fibrous superabsorbent polymer, fluff pulp and thermoplastic synthetic resin fiber. Compressed to thickness. The core 50 is entirely covered with a tissue paper (not shown) in order to prevent the core 50 from being deformed.

  5 and 6 are an explanatory diagram showing a wearing procedure of the article 20A and a perspective view of the article 20A of FIG. 1 shown in a worn state. To wear the article 20A, as shown in FIG. 5, the portion 32 of the outer sheet 22 covering the upper opening 30 is turned up toward the waist opening 26 to expose the entire leg opening 27, and then the legs of the wearer Is passed from the waist opening 26 to the leg opening 27. After the wearer wears the article 20 </ b> A, the part 32 of the outer sheet 22 turned up is lowered toward the lower opening 31. Body fluid excreted during wearing of the article 20 </ b> A passes through the top sheet 48 of the pad 47 and is absorbed by the core 50. The article 20A is not only discarded after use but also can be used repeatedly by replacing the pad 47 soiled with body fluid.

  In the article 20A, the leg opening 27 is formed of an upper opening 30 that opens on both sides of the front and rear waist regions 23 and 25, and a lower opening 31 that opens on both sides of the crotch region 24. The leg opening 27 has a larger opening area than the case where the leg opening 27 is formed only from the lower openings 31 opened on both sides of the leg opening 27. In the article 20 </ b> A, the intermediate portion 40 and the lower edge portion 41 of the outer sheet 22 are fixed only to the center portion 42 of the front and rear waist regions 23 and 25 of the pants 21, so that the outer sheet covers the upper opening 30. 22 part 32 can be turned up toward the waist opening 26, and further, by turning up the part 32 of the outer sheet 22, the entire leg opening 27 having a large opening area can be exposed. The wearer's foot can be easily passed through the leg opening 27 when worn. The article 20A can prevent the wearer's toes and heels from being caught on the leg-periphery peripheral edge 29 of the pants 21 when wearing the article 20A, and it does not take time to wear the article 20A.

  In the article 20A, a portion of the upper edge portion 39 of the outer sheet 22 other than the portion where the waist elastic member 44 is disposed is fixed to the pants 21, and the intermediate portion 40 and the lower edge portion 41 of the outer sheet 22 are further fixed. Are not fixed to the pants 21 except for the center part 42 in the waistline direction, the shrinkage force of the waistline elastic members 44, 45, 46 is not reduced by the rigidity of the pants 21, and these elastic members 44, 45 , 46 can be fully utilized to securely tighten the torso of the wearer, and an inadvertent slip of the article 20A during wearing can be prevented. In the article 20A, the longitudinal end portions 37 of the leg elastic member 36 three-dimensionally intersect with the waist elastic member 46 attached to the lower edge 41 of the outer sheet 22, so the leg elastic member 36 and the waist elastic member 46 surround the entire thigh of the wearer, and the elastic members 36 and 46 cooperate to tighten the wearer's thigh. It is possible to prevent the body fluid from leaking from 27.

  In the article 20 </ b> A, when the leg-surrounding elastic member 36 is attached to the entire leg-periphery peripheral part 29, the leg-periphery peripheral part 29 is contracted due to the contraction of the elastic member 36, and the opening area of the leg opening 27 is reduced. . However, in this article 20A, the leg elastic member 36 is attached to the entire crotch portion 35 of the leg peripheral edge 29 and a part of the waist portion 34 on the side of the crotch portion 35. Therefore, the leg opening 27 is not reduced in area as compared with the case where the leg elastic member 36 is attached to the entire leg periphery 29, and the leg opening 27 is not opened. The area can be maintained at a certain size, and the wearer's toes and heels can be reliably prevented from being caught by the leg peripheral edge 29 of the pants 21.

  In the article 20A, the middle portion 40 and the lower edge portion 41 of the outer sheet 22 are fixed to the center portion 42 in the waist circumference direction of the front and rear waist areas 23 and 25 of the pants 21, so that the outer sheet is worn while the article 20A is worn. 22 does not turn up carelessly from the lower edge 41 toward the upper edge 39. Since the part 32 of the outer sheet 22 moves freely following the movement of the wearer's thigh, the outer sheet 22 does not restrain the movement of the thigh. In the article 20A, since the upper and lower edges 39 and 41 of the outer sheet 22 and one of the intermediate parts 40 overlap each other on the outer side of the outer sheet 22, the parts 39, 40 and 41 are fixed to each other. Compared to the case where the portions 39, 40, 41 are overlapped and fixed in a palm shape at 43, the edges of the upper and lower edge portions 39, 41 and the intermediate portion 40 are less likely to contact the wearer's skin. , 41 can prevent discomfort caused by contact with the wearer's skin.

  In the article 20A, auxiliary elastic members 38 extending in the vertical direction are attached to the front and rear waist regions 23 and 25 and the crotch region 24 of the pants 21, and the elastic member 38 extends from the crotch region 24 of the pants 21 to the front and rear waist regions 23 and 25. Since the elastic body 38 reaches the waist portion 28 through the waist, the front and rear waist regions 23 and 25 and the crotch region 24 of the pants 21 are lifted toward the waist opening 26 by the contraction force of the elastic member 38. The entire pad 47 placed on the skin can be brought into close contact with the skin of the wearer, and the body fluid can be absorbed by the pad 47 reliably.

In the article 20A, the extension stress of the leg elastic member 36 is in the range of 0.01 to 1.50 N, and the extension stress of the waist elastic member 44, 45, 46 is in the range of 0.01 to 1.50 N. is there. The elongation stress of these elastic members 36, 44, 45, 46 is the elongation stress of one elastic member. When the elongation stress of the elastic member 36 is less than 0.01 N, the tightening of the wearer's thigh becomes insufficient, and body fluid may leak from the leg opening 27. When the elongation stress of the elastic member 36 exceeds 1.50 N, the leg peripheral edge 29 shrinks more than necessary, the opening area of the leg opening 27 is reduced, and the wearer's toes and heels are worn when the article 20A is worn. 21 may be caught by the peripheral edge 29 around the legs. When the elongation stress of the elastic members 44, 45, and 46 is less than 0.01 N, the wearer's torso is not sufficiently tightened, and the article 20A may be inadvertently displaced from the torso during wearing. When the elongation stress of the elastic members 44, 45, 46 exceeds 1.50 N, the outer sheet 22 shrinks more than necessary in the waist direction, the opening area of the waist opening 26 is reduced, and the portion 32 of the outer sheet 22 is It may be difficult to turn up toward the opening 26, and it may take time to wear the article 20A. In addition, the elongation stress of these elastic members 36, 44, 45, 46 was measured by the following method.
(1) A waist elastic member attached to the outer sheet 22 while preparing the same as the leg elastic member 36 attached to the peripheral edge 29 of the leg of the pants 21 as a first sample for measurement. The same sample as 44, 45, 46 is prepared as a second sample for measurement (one). For the tensile stress measurement, a tensile tester manufactured by Shimadzu Corporation was used.
(2) Both longitudinal ends of the sample are clamped by a chuck of a tensile tester (sample clamping dimension of the chuck: about 10 mm, dimension between the chucks of the sample: about 100 mm), and the sample is pulled longitudinally at a speed of 100 mm / min. After the sample is extended to 300%, the extended state is released. Again, the sample is pulled in the longitudinal direction through the testing machine at a speed of 100 mm / min, the sample is stretched to 200%, and the force applied to the testing machine at that time is measured. The extension stress of the first sample is 0.01 to 1.50 N, and the extension stress of the first sample is one extension stress of the leg-hole elastic member 36. The extension stress of the second sample is 0.01 to 1.50 N, and the extension stress of the second sample is defined as one extension stress of the waist elastic members 44, 45, and 46. Here, elongating the sample to 200% means, for example, that when the dimension between chucks of the sample is 100 mm, the sample is extended to about 200 mm, which is a value obtained by multiplying 100 mm by 2.0.

  In this article 20 </ b> A, the upper edge 39 of the outer sheet 22 is intermittently fixed to the waist periphery 28 of the pants 21, and the middle part 40 and the lower edge 41 of the sheet 22 are rear waist areas 23 of the pants 21. , 25 may be intermittently fixed to the middle part 42 in the waist circumference direction. In the article 20 </ b> A, the upper edge 39 of the outer sheet 22 is fixed to the waist periphery 28 of the pants 21, and the lower edge 41 of the sheet 22 is the center of the front and rear waist areas 23 and 25 of the pants 21. The intermediate portion 40 of the sheet 22 may not be fixed to the center portion 42 in the waistline direction as long as it is fixed to the portion 42. In the article 20 </ b> A, at least the crotch region 24 of the pants 21 may be lifted toward the waist opening 26, and the auxiliary elastic member 38 is disposed in at least the crotch region 24 of the front and rear waist regions 23, 25 and the crotch region 24. It only has to be attached. Further, the auxiliary elastic member 38 may not be attached to the pants 21.

  7 and 8 are a perspective view of a worn article 20B shown as another example, and a partially broken perspective view of the article 20B of FIG. 7, and FIGS. 9 and 10 show the pants 21 and the outer sheet 22 separated from each other. FIG. 10 is an exploded perspective view of the article 20 </ b> B of FIG. 7 and a cross-sectional view taken along line 10-10 in FIG. 7. 7 and 8, the direction around the trunk is indicated by an arrow L, and the vertical direction is indicated by an arrow M. In FIGS. 8 and 9, hatching (diagonal lines) is given to the fixing portion between the pants 21 and the outer sheet 22.

  The article 20B includes a pant 21 and an outer sheet 22 that has elastic stretchability and draws a ring in the circumferential direction. The pants 21 are interposed between a liquid-permeable surface sheet 52 positioned on the skin contact side, a liquid-impermeable back sheet 53 positioned on the skin non-contact side, and the front and back sheets 52 and 53. The liquid-absorbent core 54 is joined to the inner surfaces of 52 and 53 (see FIG. 10). The pants 21 have a front waistline region 23 and a back waistline region 25 that face each other, and a crotch region 24 that is located between the waistline regions 23 and 24. The pants 21 are formed with a waist opening 26 and a pair of leg openings 27. The pants 21 have a waist periphery 28 that surrounds the waist opening 26 and extends in the waist direction, and a leg periphery 29 that surrounds the leg opening 27 and extends in the vertical direction. The top sheet 52 is made of a hydrophilic fiber nonwoven fabric. The back sheet 53 is made of a hydrophobic fiber nonwoven fabric that has been subjected to a water repellent treatment. The core 54 is the same mixture as that of the pad of FIG.

  The leg opening 27 is formed by an upper opening 30 that opens on both sides of the front and rear waist regions 23 and 25, and a lower opening 31 that opens on both sides of the crotch region 24 and continues to the upper opening 30. The upper opening 30 is covered with a portion 32 of the outer sheet 22. The waist periphery 28 is formed from the ends of the front and back sheets 52 and 53 extending outward in the longitudinal direction from the edge of the core 54. At the waist periphery 28, the inner surfaces of the sheets 52 and 53 are fixed to each other with the end portions of the front and back sheets 52 and 53 overlapping each other. The waist periphery 28 has a connecting portion 33 located above the leg opening 27. The connecting portions 33 of the waist circumference 28 are fixed to each other in a state where one portion 33 overlaps the outside of the other portion 33.

  The leg-periphery peripheral edge portion 29 forms an arc toward the inside of the trunk periphery. The leg-periphery peripheral edge portion 29 is formed of a waist-peripheral portion 34 that extends to the front and rear waist-periphery regions 23 and 25 excluding the waist-periphery peripheral portion 28, and a crotch portion 35 that extends to the crotch region 24. The waist portion 34 is located inside the outer sheet 22 and surrounds the upper opening 30. The crotch portion 35 surrounds the lower opening 31. The leg-periphery peripheral edge portion 29 is formed from the side portions of the front and back sheets 52, 53 that extend outward from the side edge of the core 54 in the trunk periphery direction. In the leg periphery 29, the inner surfaces of the sheets 52 and 53 are fixed to each other with the side portions of the front and back sheets 52 and 53 overlapped. A plurality of leg elastic members 36 extending in the vertical direction are attached to the leg peripheral edge 29 so as to be contractible.

  The leg-surrounding elastic member 36 is attached to the entire crotch portion 35 and a part of the waistline portion 34 on the side of the crotch portion 35, and is attached to the entire waistline portion 34. Absent. The leg-around elastic member 36 is interposed between the front and back sheets 52 and 53, and is fixed to the inner surfaces of the sheets 52 and 53 in a state where the leg-around elastic members 36 are expanded in the vertical direction at a predetermined magnification. Both longitudinal end portions 37 of the leg-hole elastic member 36 extending to the waistline portion 34 three-dimensionally intersect with a lower edge portion 41 of the outer sheet 22 described later. In the pants 21, the extension of the leg-around elastic member 36 is released, and the crotch part 35 and the waist part 34 located on the side of the crotch part 35 are contracted in the vertical direction due to the contraction of the elastic member 36. A gather is formed in a part and the entire crotch part 35.

  The outer sheet 22 is made of two stretchable and hydrophobic fiber nonwoven fabrics whose opposite surfaces are intermittently fixed in an overlapping state (see FIG. 10). The nonwoven fabric is preferably subjected to a water repellent treatment. The outer sheet 22 is air-impermeable and liquid-impervious and does not allow body fluid to permeate or permeate through the body fluid. The outer sheet 22 includes an upper edge 39 extending in the waist circumference direction in parallel with the waist circumference edge 28 of the pants 21, a lower edge 41 positioned on the crotch region 24 side and extending in the waist circumference direction, and upper and lower edges And an intermediate portion 40 located between the portions 39 and 41 and extending in the circumferential direction. The outer sheet 22 has a connecting portion 43 that is located in the leg opening 27 and extends in the vertical direction. In the connecting portion 43, one of the upper and lower edge portions 39, 41 and the intermediate portion 40 overlaps the other outer side, the upper edge portions 39 are fixed to each other, the intermediate portions 40 are fixed to each other, and the lower edge portions 41 are connected to each other. It is fixed. A plurality of waistline elastic members 55 extending in the waistline direction with a given distance in the vertical direction are attached to the upper edge 39 of the outer sheet 22 so as to be shrinkable. The elastic member 55 forms a ring in the circumferential direction.

  The waist elastic member 55 is covered with a nonwoven fabric, and is fixed to the nonwoven fabric in a state of being stretched at a predetermined magnification in the waist direction. In the outer sheet 22, the extension of the elastic member 55 for the waistline is released, and the upper edge 39 of the sheet 22 contracts in the direction of the waist due to the contraction of the elastic member 55, and a gather is formed in the upper edge 39. In the outer sheet 22, the stretching stress in the waist circumference direction at the upper end portion 39 is larger than that in the waist circumference direction at the intermediate portion 40 and the lower edge portion 41.

  In the outer sheet 22, the entire upper edge 39 is continuously fixed to the entire circumference of the waist circumference 28 of the pants, and the middle portion 40 and the lower edge 41 are in the waist direction of the front and rear waist areas 23 and 25 of the pants 21. It is fixed to the central part 42 intermittently. The upper edge portion 39 is fixed to the pants 21 at a portion other than the portion where the waistline elastic member 55 is disposed. The intermediate portion 40 and the lower edge portion 41 are not fixed to the pants 21 except for the middle portion 42 in the waistline direction.

  FIG. 11 is an explanatory diagram illustrating a wearing procedure of the article 20B. In order to wear this article 20B, as shown in FIG. 11, the portion 32 of the outer sheet 22 covering the upper opening 30 is turned up toward the waist opening 26, and the entire leg opening 27 is exposed. The foot is passed from the waist opening 26 to the leg opening 27. After the wearer wears the article 20 </ b> B, the part 32 of the outer sheet 22 turned up is lowered toward the lower opening 31. Body fluid excreted during wearing of the article 20 </ b> B passes through the top sheet 52 of the pants 21 and is absorbed by the core 54.

  In the article 20B, the leg opening 27 is formed of an upper opening 30 that opens on both sides of the front and rear waist regions 23, 25 and a lower opening 31 that opens on both sides of the crotch region 24. The area of the leg opening 27 is larger than the case where the leg opening 27 is formed only from the lower opening 31 opened on both sides of the leg opening. In the article 20 </ b> B, since the intermediate portion 40 and the lower edge portion 41 of the outer sheet 22 are fixed only to the center portion 42 of the front and rear waist regions 23 and 25 of the pants 21, the outer sheet covering the upper opening 30. 22 can be turned up toward the waist opening 26. Further, by turning up the portion 32 of the outer sheet 22, the entire leg opening 27 having a large area can be exposed, so that the article 20B can be worn. Sometimes the wearer's foot can be easily passed through the leg opening 27. The article 20B can prevent the wearer's toes and heels from being caught on the leg peripheral edge 29 of the pants 21 when wearing the article 20B, and it does not take time to wear the article 20B.

  The article 20B can reliably tighten the wearer's torso by fully utilizing the contraction force between the elastic outer sheet 22 and the waist elastic member 55, and the article 20B is inadvertently worn. A slippage can be prevented. In the article 20B, the longitudinal end portions 37 of the leg-surrounding elastic member 36 three-dimensionally intersect with the lower edge 41 of the outer sheet 22, and therefore the lower edge 41 of the outer sheet 22 and the leg-surrounding elastic member 36 Thus, the entire thigh of the wearer is surrounded, and the seat 22 and the elastic member 36 cooperate to tighten the thigh of the wearer, so that the body fluid leaks from the leg opening 27 while the article 20B is worn. Can be prevented.

  In the article 20 </ b> B, the leg-around elastic member 36 is attached to the entire crotch portion 35 of the leg circumference peripheral portion 29 and a part of the waistline portion 34 on the side of the crotch portion 35. Since it is not attached, the opening area of the leg opening 27 is not reduced as compared with the case where the leg-around elastic member 36 is attached to the entire leg periphery 29, and the opening area is made constant. It can hold | maintain and it can prevent reliably a finger | toe of a wearer's toe | foot and the hook with respect to the leg periphery peripheral part 29 of the underpants 21. FIG. In the article 20B, the intermediate portion 40 and the lower edge portion 41 of the outer sheet are fixed to the center portion 42 in the waist circumference direction of the front and rear waist areas 23 and 25 of the pants 21, so that the outer sheet 22 is worn while the article 20B is worn. Will not be turned inadvertently from the lower edge 41 toward the upper edge 39. Since the part 32 of the outer sheet 22 moves freely following the movement of the wearer's thigh, the outer sheet 22 does not restrain the movement of the thigh.

  In the article 20B, the extension stress of the leg-hole elastic member 36 is in the range of 0.01 to 1.50N. The elongation stress of the elastic member 36 is the elongation stress of one elastic member. When the elongation stress of the elastic member 36 is less than 0.01 N, the tightening of the wearer's thigh becomes insufficient, and body fluid may leak from the leg opening 27. When the elongation stress of the elastic member 36 exceeds 1.50 N, the leg peripheral edge 29 shrinks more than necessary, and the opening area of the leg opening 27 is reduced, so that the wearer's toes and heels are worn when the article 20B is worn. May be caught by the peripheral edge 29 of the leg. The method for measuring the elongation stress of the elastic member 36 is the same as that in FIG.

  In this article 20 </ b> B, the upper edge 39 of the outer sheet 22 is intermittently fixed to the waist edge 28 of the pants 21, and the middle part 40 and the lower edge 41 of the outer sheet 22 are the front and rear waist areas of the pants 21. 23 and 25 may be continuously fixed to the middle part 42 in the waist circumference direction. In addition, the upper edge 39 of the outer sheet 22 is fixed to the waist periphery 28 of the pants 21, and the lower edge 41 of the outer sheet 22 is the waist center of the front and rear waist areas 23 and 25 of the pants 21. The intermediate portion 40 of the outer sheet 22 may be fixed to the portion 42, and the intermediate portion 40 of the outer sheet 22 may not be fixed to the center portion 42 of the front and rear waist regions 23 and 25 of the pants 21. In the article 20 </ b> B, the auxiliary elastic member 38 may be attached to at least the crotch region 24 among the front and rear waist regions 23, 25 and the crotch region 24, similar to that of FIG. 1. In the case of attaching the auxiliary elastic member 38 to the article 20B, the auxiliary elastic member 38 is interposed between the back sheet 53 and the core 54, and the auxiliary elastic member 38 is stretched in the vertical direction at a predetermined magnification. It sticks to. When the auxiliary elastic member 38 is attached to the article 20B, at least the crotch region 24 of the pants 21 is lifted toward the waist opening 26 by the contraction force of the elastic member 38, so that the crotch region 24 can be brought into close contact with the wearer's skin. .

  The pad 47 of FIG. 1 and the top sheets 48 and 52 of the pants 21 of FIG. 7 are not only hydrophilic fiber nonwoven fabrics but also hydrophobic fiber nonwoven fabrics having a large number of apertures and plastic films having a large number of fine apertures. Either can be used. In addition to the hydrophobic fiber nonwoven fabric, the pad 47 and the back sheets 49 and 53 of the pants 21 are a breathable liquid-impervious plastic film, a composite nonwoven fabric laminated with two or more hydrophobic fiber nonwoven fabrics, a hydrophobic fiber nonwoven fabric and a breathable material. Any composite sheet laminated with a liquid-impervious plastic film can also be used. For the back sheets 49 and 53, a composite nonwoven fabric (SM nonwoven fabric, SMS nonwoven fabric, SMMS nonwoven fabric) in which a spunbond nonwoven fabric having high strength and good flexibility is superposed on both sides or one side of a melt-blown nonwoven fabric having high water resistance. It can also be used. Natural rubber or synthetic rubber can be used for the elastic members 36, 44, 45, 46. The elastic members 36, 44, 45, and 46 are yarns, but a band-like elastic member can be used in addition to the yarn shape.

  As the fiber nonwoven fabric, a nonwoven fabric produced by each method of spunlace, needle punch, melt blown, thermal bond, spunbond, and chemical bond can be used. Polyester-based, polyacrylonitrile-based, polyvinyl chloride-based, polyethylene-based, polypropylene-based, and polystyrene-based fibers can be used for the constituent fibers of the nonwoven fabric. As the constituent fibers, core-sheath type composite fibers, parallel type composite fibers, atypical hollow fibers, microporous fibers, and bonded type composite fibers can also be used.

  As the stretchable fiber nonwoven fabric forming the outer sheet 22 of the article 20B in FIG. 7, nonwoven fabrics manufactured by melt blown and spunbond manufacturing methods can be used. As the constituent fiber of the stretchable nonwoven fabric, a stretchable fiber obtained by melting and spinning a thermoplastic elastomer resin can be used. The outer sheet 22 having stretchability is a crimped fiber obtained by melting and spinning a thermoplastic synthetic resin of polypropylene, polyethylene or polyester on at least one surface of a stretchable and hydrophobic fiber nonwoven fabric made of thermoplastic elastomer resin fibers. It is also possible to use a composite nonwoven fabric in which hydrophobic fiber nonwoven fabrics made of

  For fixing the pants 21 and the outer sheet 22, an adhesive or heat welding means such as heat seal or sonic seal can be used. An adhesive can be used to fix the elastic members 36, 44, 45, 46 to the pants 21 and the outer sheet 22. As the adhesive, a hot-melt adhesive, an acrylic adhesive, or a rubber adhesive can be used. The pants 21 and the outer sheet 22 are intermittently fixed by applying the adhesive to the pants 21 or the outer sheet 22 in any of spiral, wavy, zigzag, dot, and striped forms. The elastic members 36, 44, 45, 46 can be intermittently fixed to the pants 21 and the outer sheet 22. By continuously applying the adhesive to the pants 21 and the outer sheet 22, the pants 21 and the outer sheet 22 can be continuously fixed, and the elastic members 36, 44, 45, 46 are connected to the pants 21 and the outer sheet. 22 can be continuously fixed.

The perspective view of the wearing article shown as an example. FIG. 2 is a partially broken perspective view of the article of FIG. 1. The disassembled perspective view of the article | item of FIG. 1 which isolate | separates and shows a pants and an outer sheet | seat. FIG. 4 is a cross-sectional view taken along line 4-4 in FIG. 1. Explanatory drawing which shows the wearing procedure of articles | goods. The perspective view of the article | item of FIG. 1 shown in a wearing condition. The perspective view of the wearing article shown as another example. FIG. 8 is a partially broken perspective view of the article of FIG. 7. The disassembled perspective view of the article | item of FIG. 7 which isolate | separates and shows a pants and an outer sheet | seat. FIG. 10 is a cross-sectional view taken along line 10-10 in FIG. Explanatory drawing which shows the wearing procedure of articles | goods.

Explanation of symbols

20A Disposable wearing article 20B Disposable wearing article 21 Pants 22 Outer sheet 23 Front waist circumference area 24 Inseam area 25 Rear waist circumference area 26 Waist opening 27 Leg opening 28 Girth circumference edge part 29 Leg circumference edge part 30 Upper opening 31 Lower opening 32 Part 34 waist part 35 inseam part 36 leg elastic member 37 both longitudinal end parts 38 auxiliary elastic member 39 upper edge part 40 middle part 41 lower edge part 42 waist part direction center part 43 connecting part 44 waist part elastic member 45 trunk Elastic member for circumference 46 Elastic member for trunk circumference

Claims (6)

Pants having a front and rear waist area facing each other and a crotch area positioned between the waist areas and having a waist opening and a pair of leg openings, and a waist direction located outside the front and back waist areas of the pants A belt-like outer sheet that surrounds the waist opening, and the pants have a waist circumference that extends around the waist opening and extends in the waist circumference direction, and a leg circumference that surrounds the leg opening and extends in the longitudinal direction An upper edge portion extending in the waist circumference direction in parallel with the waist circumference edge portion of the pants, and a lower edge portion located on the crotch region side of the pants and extending in the waist circumference direction. And a pants-type disposable wearing article having an intermediate part positioned between the upper and lower edges and extending in the waistline direction,
The leg periphery is formed of a waist part extending to the front and back waist areas excluding the waist periphery, and a crotch part extending to the crotch area, and the leg openings are on both sides of the front and back waist area. An upper opening that is covered with the outer sheet and a lower opening that is continuous with the upper opening and opens on both sides of the crotch region.
The upper edge of the outer sheet is fixed to the periphery of the waist of the pants, and at least the lower edge of the middle and lower edges of the outer sheet is around the waist of the front and rear waist of the pants. The said wearing article fixed to the direction center part.   A plurality of waistline elastic members extending in the waistline direction with a predetermined distance apart in the longitudinal direction are attached to the upper and lower edge portions and the intermediate portion of the outer sheet so as to be contractible, and extend in the longitudinal direction. Are elastically attached to the crotch part and the waist part located on the side of the crotch part of the peripheral edge part of the leg, and both ends in the longitudinal direction of the elastic members for the leg part extending to the waist part The wearing article according to claim 1, wherein a portion intersects the waist elastic member extending to the lower edge of the outer sheet.   The outer sheet has elastic stretchability in the waist circumference direction, and the leg circumference elastic member extending in the longitudinal direction is positioned on the crotch part and the crotch part side of the leg circumference. The wearing article according to claim 1, wherein both ends in the longitudinal direction of the leg-hole elastic members that are shrinkably attached to the waist portion and extend to the waist portion intersect with a lower edge portion of the outer sheet. .   The outer sheet has a connecting portion that extends in the longitudinal direction and is located at the center of the waist circumference direction of at least the front waist area of the front and rear waist areas of the pants. The wearing article according to any one of claims 1 to 3, wherein one of the edge part and the intermediate part is fixed to each other in a state where the outer part overlaps the other.   A plurality of auxiliary elastic members, which are positioned between the peripheral edges around the legs of the pants and extend in the vertical direction, are shrinkably attached to at least the crotch area of the front and rear waist areas and the crotch area of the pants. The wearing article according to any one of claims 1 to 4.   The wearing article according to claim 5, wherein the auxiliary elastic member reaches the periphery of the waist through the front and back waist areas from the crotch area of the pants.

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