KR20050012139A - Disposable body fluid treatment article - Google Patents

Abstract

PURPOSE: Provided is a disposable body fluid absorbent article in which are formed stiffness alteration areas on both sides of center line in parallel with center line to prevent the displacement of urine absorbent pad. CONSTITUTION: In the disposable article(1) comprising liquid-permeable top sheet, liquid-impermeable back sheet and body fluid absorbent core material disposed between the both sheets, abdominal contact area(6) is formed in front area in the longitudinal direction, dorsal contact area(7) is formed in rear area in the longitudinal direction and crotch contact area(8) between the both contact areas. The abdominal contact area comprises center area(15) and a pair of wings(16) in the width direction and is formed wider than crotch contact area. In the abdominal contact area, are formed stiffness alteration areas(51) on both sides of center line(C-C) in parallel with center line(C-C).

Description

Disposable body fluid treatment article {DISPOSABLE BODY FLUID TREATMENT ARTICLE}

The present invention relates to a disposable body fluid treatment article suitable as a urine pad or the like worn by an incontinence patient.

The absorbent article disclosed in Japanese Patent Laid-Open No. 2003-93439 (Patent Document 1) is suitable for use as a urine absorbing pad and is worn in combination with a disposable diaper or the like. For the combination, the outer surface of the back sheet of the absorbent article is provided with a twist preventing means made of a mechanical fastener member or an adhesive.

Japanese Laid-Open Patent Publication No. 2002-507915 (Patent Document 2) discloses a stool recovery device having a bag. This apparatus is suitable for use with disposable diapers and the like, and has a bag for holding a side, which is formed with an opening for receiving a side and a flange extending around the opening. Pressure-sensitive adhesives are applied to the flanges. In such a device, the adhesive is in close contact with the skin of the device wearer.

[Patent Document 1] Japanese Unexamined Patent Publication No. 2003-93439

[Patent Document 2] Japanese Patent Publication No. 2002-507915

The articles of Patent Literature 1 or Patent Literature 2, which are worn to treat body fluids, are fixed directly or indirectly to the body by means of an adhesive, a pressure-sensitive adhesive, a mechanical fastener member, or the like when they are worn. However, in these means, if it is an adhesive or an adhesive, they can be reused if they are soiled by dirt, sweat, etc., in addition to the problem that they cause skin rashes of the wearer or cause strong irritation to the skin when peeling from the skin. There is problem to be impossible. In addition, if the means is a mechanical fastener member for the diaper worn, the urine pad itself may be used for the wearer in addition to the problem that the diaper side member combined with the member is also limited to being a mechanical fastener member or a replacement thereof. Since there is no positioning means, when repeatedly wearing the urine pad, there is a problem that it is difficult to always put the urine pad in the proper position with respect to the wearer's body.

This invention makes it a subject to improve so that all the said troubles can be solved about the disposable body fluid processing goods like the said prior art used together with worn articles, such as an open diaper, a pants type diaper, a diaper cover, etc.

1 is a partially broken plan view of a urine pad;

FIG. 2 is a cross-sectional view taken along the line II-II of FIG. 1. FIG.

3 is a cross-sectional view taken along the line III-III of FIG. 1;

4 is a cross-sectional view taken along the line IV-IV of FIG. 1;

5 is a perspective view of the urine absorbent pad in a worn state;

FIG. 6 is a view similar to FIG. 1 showing an example of the embodiment; FIG.

FIG. 7 is a view similar to FIG. 3 showing an example of the embodiment; FIG.

FIG. 8 is a view similar to FIG. 3 showing an example of the embodiment; FIG.

FIG. 9 is a view similar to FIG. 3 showing an example of the embodiment; FIG.

FIG. 10 is a view similar to FIG. 9 showing an example of the embodiment; FIG.

<Explanation of symbols for main parts of drawing>

1: Body fluid treatment article (urine pad)

2: surface sheet

3: back sheet

4 core material

15 center part (front center part)

16 wing part (front center part)

31 center part (rear center part)

32: wing part (back center part)

51: stiffness change area (front stiffness change area)

52: stiffness change area (back stiffness change area)

MEANS TO SOLVE THE PROBLEM In order to solve the said subject, what this invention aims at consists of a liquid permeable surface sheet, an impervious back sheet, and the body fluid absorbent core material interposed between these sheets, and has a width direction which crosses the front-back direction and this direction It is a disposable body fluid processing article in which a dorsal contact region is formed in the front of the said front-back direction, the back contact region is formed in the back, and the crotch contact region is formed between these both contact regions.

In such a body fluid treating article, the present invention is characterized as follows. The dorsal contact region is formed wider than the crotch contact region so that both sides of the dorsal contact region form a pair of wing portions and are positioned between each of the pair of wing portions and the pair of wing portions and the core. A stiffness variation region including ash and further extending in the front-back direction parallel to the center line and having a dimension of 2 to 15 mm in the width direction on each side of the center line bisecting the width of the body fluid treatment article; It is included. The bending stiffness in the front-rear direction and the width direction of the back contact region is rapidly changed between a portion near the width direction inner side than the change region and a portion near the width direction outer side than the change region, When the stiffness of one of the two parts is taken as a reference, the stiffness of the other part has a value of at least 1.5 times.

The present invention has the following preferred embodiments.

(1) The stiffness is drastically changed because the inner near portion and the outer near portion include the core material having at least one of thickness and density different from the change region as a boundary.

(2) The said change area | region is the groove | channel which spaces the said both parts in the said width direction.

(3) The rigid change region is also formed in the dorsal contact region.

(4) The rigidity of the portion near the inner side in the width direction is at least 1.5 times the rigidity of the portion near the inner side in the width direction.

The disposable body urine pad as a disposable body fluid treatment article will be described below with reference to the accompanying drawings, for example.

1 is a partially broken plan view of the urine absorbent pad 1. The urine absorbing pad 1 has an almost hourglass shape interposed between the liquid-permeable surface sheet 2 located on its inner surface side, the liquid-impermeable back sheet 3 located on its outer surface side, and both of these sheets 2, 3. It has the body fluid absorbent core material 4 shown. On the outer side of the peripheral edge 10 of the core material 4, both side edge flaps 11, a front edge flap 12, and a rear edge flap 13 are formed. The front sheet 2 and the back sheet 3 are bonded to each other by bonding or welding, with portions extending from the periphery 10 of the core material 4 so that both side flap 11 and shear edge flap 12 and A part with the rear end flap 13 is formed. The urine absorbent pad 1 also has a dorsal contact region 6 in front of the centerline CC extending in the longitudinal direction, which is bisected in its width, and has a dorsal contact region 7 at the rear, There is a crotch contact region 8 between these two contact regions 6, 7. On the inner surface side of the urine absorbent pad 1, a pair of leakage prevention cuffs 21 which are extended in the front-rear direction parallel to the centerline C-C and oppose each other are formed. The leakage preventing cuff 21 has an inner edge portion 22, an outer edge portion 23, a front edge portion 24, a rear edge portion 25, and an outer edge portion 23, a front edge portion 24, and a rear edge portion 25. ) Are positioned at the side edge flap 11, the front edge flap 12, and the rear edge flap 13 of the urine absorbent pad 1. The inner edge portion 22 of the leakage preventing cuff 21 has an elastic member 27 parallel to the centerline CC attached to the inner surface of the sleeve 26 formed by folding the leakage preventing cuff 21 back in an extended state. In addition, when the urine absorbing pad 1 is worn, the elastic member 27 contracts so that the surface of the surface sheet 2 can stand up (see FIG. 5).

This urine absorbing pad 1 is curved so that both edge flaps 11 in the crotch contact region 8 are convex toward the center line CC, and the core member 4 is also curved at its periphery 10. It is curved so as to become convex toward (CC). Both edges 11 have a width A near the center line CC at the portion 11a and the peripheral edge 10 has a width B near the centerline CC at the portion 10a. . These portions 10a and 11a are located near the dorsal contact region 6 than the center portion in the front-back direction of the urine absorbent pad 1 or the center portion thereof.

The dorsal contact region 6 is a pair of chain lines D extending in parallel to the centerline CC through the left and right pairs of portions 10a and 10a of the core material 4 in the crotch contact region 8. A pair of front wings 16 extending outward in the width direction as an outer portion of each of the front central portion 15, which is an inner portion of the pair, and a pair of dashed lines D, can cover the ventral portion of the urine pad wearer widely. Has

The dorsal contact area 7 extends outward in the width direction as an outer portion of each of the rear center portion 31, which is an inner portion of the pair of chain lines D, and the pair of chain lines D, and is a dorsal portion of the urine pad wearer. It has a pair of rear wings 32 that can cover a wide range.

FIG. 2 shows a cut along the line II-II traversing the crotch contact region 8 in FIG. 1. The front sheet 2 and the back sheet 3 extend laterally from the periphery 10 of the core material 4, overlap each other, and are bonded to each other. The back sheet 3 extends further to the side than the front sheet 2, and the outer edge portion 23 of the leakage preventing cuff 21 is joined to the extended portion. The inner edge portion 22 of the leak-proof cuff 21 is located above the surface sheet 2, and when the urine absorbing pad 1 is worn and curved in the front-back direction, the elastic member 27 contracts and the surface sheet 2 It is possible to ascend like an imaginary line from the inner surface of (see FIG. 5).

FIG. 3 shows a partial cutaway view of the urine absorbent pad 1 along line III-III traversing the dorsal contact area 6 in FIG. 1. The dorsal contact region 6 has a bending stiffness in the front-rear direction and the width direction of the urine absorbent pad 1 along the chain line D, and is bordered on the front stiffness change region 51 shown as a set of a plurality of dots. It is made to change rapidly, in other words, to change discontinuously. In the dorsal contact region 6 of the illustrated example, the core material 4 located in the front center portion 15 has a thickness P, and the core material 4 located in the front wing portion 16 has a thickness Q, and the thickness Q has a value of at least 1.2 times, more preferably at least 1.5 times, still more preferably at least 2 times the thickness P. By the difference between these thicknesses P and Q, the front wing part 16 is adjusted so that the bending stiffness of each of the width direction and the front-back direction may be at least 1.5 times the bending stiffness of the width direction and the front-back direction of the front center part 15, respectively. have. The greater the difference between the thicknesses P and Q, the greater the difference in stiffness between the front wing 16 and the front center 15. The front stiffness change region 51 has a width in the range of 2 to 15 mm, more preferably 3 to 10 mm so as to sharply change the stiffness as the boundary. Generally speaking, the smaller this width, the more significant the difference in behavior between the front wing 16 and the front center 15 due to the difference in rigidity. However, setting this width to 2 mm or less is not preferable because it makes quality control of the core material 4 difficult. The rigidity between the front wing 16 and the front center 15 may be adjusted by the thickness difference of the core material 4, or may be adjusted by the difference in the thickness and density of the core material 4, and the core material It may be adjusted by the difference with the density of (4). In the back contact region 6, the surface sheet 2 has the same width as the width in the crotch contact region 8, and the core material 4 extends laterally from the surface sheet 2. The part is covered by the outer edge part 23 and the intermediate part of the outer edge part 23 and the inner edge part 22 of the leakage preventing cuff 21.

FIG. 4 shows a partial cutaway view of the urine absorbent pad 1 along the IV-IV line traversing the dorsal contact region 7 in FIG. 1. The dorsal contact region 7 is made so that the rigidity in the front-rear direction and the width direction of the urine absorbing pad 1 is provided along the dashed line D so as to rapidly change in the rear stiffness change region 52 shown as a collection of a plurality of dots. In the dorsal contact region 7, the rear center portion 31 has a thickness R and the rear wing portion 32 has a thickness S. The thickness S has a value of at least 1.2 times, more preferably at least 1.5 times and even more preferably at least 2 times the thickness R. Due to the difference between these thicknesses S and R, the rear wing portion 32 is in the front-rear direction. The stiffness in each of the and width directions is made to be at least 1.5 times the bending stiffness in each of the front and rear directions of the rear center portion 31 and the width direction. The width of the rear stiffness change region 52 is in the range of 2 to 15 mm, more preferably 3 to 10 mm. The difference in these thicknesses R and S, the difference in stiffness, and the width of the stiffness change region 52 can be the same as the back contact region 6.

5 is a perspective view of the urine absorbent pad 1 in use. The urine absorbent pad 1 is located inside the worn pants 100 shown in phantom, and is in close contact with the back 102, the dorsal 103, and the crotch 104 of the wearer 101. In the urine absorbing pad 1, the inner edge portion 22 is the outer edge of the leakage preventing cuff 21 of the dorsal contact region 8 due to the contraction of the elastic member 27 (see FIG. 1) as it bends in the front-rear direction. With the part 23 as a base, it stands up from the inner surface of the surface sheet 2 upward. The crotch contact region 8 is fitted to both legs 106 of the wearer 101 so that the width thereof becomes narrower, for example, the cross section is deformed so as to have a V-shape or a W-shape and narrows, and extends in the front-rear direction. Pleats 107, and some of the pleats 107 extend to the front center portion 15 of the dorsal contact region 6 or to the rear center portion 31 of the dorsal contact region 7. However, rigid change regions 51 and 52 are formed between the front center portion 15 and the front wing portion 16 and between the rear center portion 31 and the rear wing portion 32, respectively, and are bent. Since the stiffness changes abruptly in the front stiffness change region 51 and the rear stiffness change region 52, in other words, discontinuously, deformation of the front center portion 15 or the rear center portion 31 is caused by the front wing portion 16. B is not transmitted to the rear wing part 32, or it is hard to be transmitted. As a result of this, the urine absorbent pad 1 can maintain a state in which the front wing portion 16 and the rear wing portion 32 are widened to the side as shown in FIG. In addition to close contact with the side 102 and the dorsal portion 103 over a wide range, the front wing 16 of the side edge flaps 11 that are curved toward the centerline CC in the crotch contact region 8. ) And the portions 41, 42 (refer to FIG. 1) close to the rear wing portion 32 are in close contact with each other so as to surround the attached portion around the portion where the leg portion 106 is attached. The front wing portion 16 or the rear wing portion 32 of such a urine absorbent pad 1 can prevent the urine absorbent pad 1 from twisting in the front and rear directions indicated by arrows X and Y with respect to the body of the wearer 101. Acts as a stopper. In addition, when the urine absorbent pad 1 is repeatedly worn, the urine absorbent pad is placed against the wearer's body by placing the urine absorbent pad 1 on the body so that the portions 41 and 42 are located at the portion where the leg 106 is attached. You can always touch (1) in the proper position.

In the present invention, the bending rigidity of the core member 4 in the urine absorbent pad 1 is measured using a Taber Stiffness Tester manufactured by Nisin Corporation in accordance with JIS P8125. 38.1 x 70 mm size test piece is used for the measurement of rigidity. The stiffness value corresponds to an average value of at least three test pieces in which the longitudinal direction of the test piece coincides with the width direction (body circumferential direction) of the urine pad 1 and the longitudinal direction of the test piece coincides in the front-rear direction with respect to a predetermined portion where the rigidity is to be measured Average the three specimens. When the size of the test piece exceeds the size of the predetermined part at which the rigidity is to be measured, the test piece equivalent to the part is produced separately from the urine absorbing pad 1, and the rigidity can be measured. The thickness of the test piece can be measured by using a dial gauge and giving a surface pressure of 5 g / cm 2 to the test piece. The unit of rigidity is N · cm. As the surface sheet 2 of the urine absorbent pad 1, a liquid permeable nonwoven fabric, a woven fabric, a perforated plastic film, etc. can be used. As the back sheet 3, a composite sheet obtained by laminating a breathable nonwoven fabric on the outer surface of an impervious plastic film or a nonwoven fabric may be used. In addition to the ground pulp, the core material 4 may be a mixture of ground pulp with superabsorbent polymer particles or thermoplastic synthetic fibers. These pulverized pulp and mixtures can be coated with a liquid-permeable, preferably liquid-permeable, liquid-diffusing sheet such as tissue paper. Pants 100, diapers, and diapers used together with the urine absorbent pad 1 are provided on the outer surface of the back sheet 3 of the urine absorbent pad 1 to enhance the prevention of distortion of the urine absorbent pad 1 with respect to the body of the wearer 101. It is possible to provide anti-slip means, for example an adhesive area, on the inner surface of the cover.

FIG. 6 is a view similar to FIG. 1 showing an example of the embodiment. FIG. The back contact region 6 of the urine absorbent pad 1 is formed in the same manner as in FIG. 1 and has a front center portion 15 and a pair of front wing portions 16, but the back contact region 7 has a crotch contact region. Although it is formed in substantially the same width | variety as the width | variety A of (8), and has a part corresponding to the back center part 31, it does not have a part corresponding to the back wing part 32. This urine absorbing pad 1 can suppress the twist in the arrow Y direction in FIG. 5 by the front wing part 16 when it is worn. In addition, the urine absorbent pad 1 according to the present invention is not the shape of FIG. 6, but the back contact region 6 is formed to have substantially the same width as the crotch contact region 8, and the dorsal contact region 7 is the rear center portion. It may be made to have 31, the rear wing part 32, and the rear rigidity change area | region 52. FIG. By doing so, the rear wing part 32 can contact the leg part 106 from the back side, and can suppress the distortion of the urine absorption pad 1 to the front direction X.

FIG. 7 is a view similar to FIG. 3 showing an example of the embodiment. FIG. In this urine absorbing pad 1, the front stiffness change area | region 51 in the back contact area | region 6 is formed inside the dashed line D. FIG. Depending on the size of the urine absorbing pad 1, the separation dimension M between the dashed line D and the front stiffness change region 51 is preferably within 30 mm. By doing in this way, the front wing part 16 with a large width can be obtained. The front stiffness change region 51 may be formed on the side opposite to the position of the example shown in relation to the dashed line D, that is, outside the dashed line D.

8 is also the same drawing as FIG. 3 which shows an example of embodiment. In this urination pad 1, the front stiffness change area | region 51 is formed in the vicinity of the dashed line D, but the thickness of the core material 4 in the front center part 15 inside the front stiffness change area | region 51 inside. P is at least 1.2 times, more preferably at least 1.5 times, still more preferably at least 2 times the thickness Q of the core material 4 at the front wing 16 outside the front stiffness change region 51. By the difference in the thickness or by adding the difference in density to the difference in the thickness, the stiffness in the fore and aft direction of the front center part 15 and the width direction is the rigidity of the fore and aft direction of the front wing part 16 and the width direction. It is adjusted to be at least 1.5 times. When the urine absorbent pad 1 is worn, even if the deformation in the front center portion 15 with high rigidity may be transmitted from the vicinity of the front stiffness change region 51 to the front wing 16, the deformation is low in rigidity. There is no wide spread in the front wing 16. Such a front wing portion 16 is in close contact with the portion where the leg portion 106 of the wearer 101 is attached or the dorsal portion 102 over a wide range, so that the arrow Y direction of the urine absorbent pad 1 (see FIG. 5). ) Can be suppressed. In an example of the urine absorbing pad 1 in this embodiment, the rigidity value of the front-back direction of the front center part 15 and the width direction is 0.021-0.222 N * cm, and the front-back direction and the width direction of the front wing | blade part 16 are shown. The stiffness value of the stiffness is 0.0045 to 0.0049 N · cm, and the stiffness value of the front center portion 15 is 4 to 5 times the stiffness value of the front wing portion 16.

9 is also the same drawing as FIG. 3 which shows an example of embodiment. The front stiffness change area 51 of this urine absorption pad 1 is located near the dashed line D. FIG. The core material 4 has almost the same thickness on both sides of the front stiffness changing region 51, but almost the entirety of the core material 4 at the front wing 16 outside of the front stiffness changing region 51. It is compressed so as to show a high density, and the density thereof is higher than the density of the core material 4 in the inner front central portion 15, whereby the rigidity in the front-back direction and the width direction of the front wing portion 16 is in the front center portion. It is higher than (15), Preferably it is adjusted so that it may become at least 1.5 times higher. This front wing 16 also acts the same as the front wing 16 of FIG. 3.

FIG. 10 is a view similar to FIG. 9 showing an example of the embodiment. FIG. In the back contact region 6 of the urine absorbent pad 1, grooves for separating the low-density front center portion 15 and the high-density front wing portion 16 in the width direction are formed as the front stiffness change region 51. It is. As compared with the front stiffness variation region 51 of FIG. 9, the grooved front stiffness variation region 51 can more effectively suppress the deformation of the front center portion 15 from being transmitted to the front wing portion 16. The core material 4 exists in a thin layer in the bottom part of the groove | channel of the example of illustration. It is preferable that the thickness of such a thin layer does not exceed 1/2 of the thickness of the front center part 15 and the front wing part 16, and it is more preferable not to exceed 1/3. If the thickness of the thin layer exceeds 1/2 of the thickness of the front wing 16, the effect that the front stiffness change region 51 is a groove is insufficient. Moreover, in this invention, it is also possible to employ | adopt the front rigidity change area | region 51 which does not contain the core material 4 in the bottom part of a groove | channel. In such a front stiffness change region 51, it is preferable to bond the front sheet 2 and the back sheet 3 by gluing or welding so that the front center part 15 and the front wing part 16 are spaced apart reliably. Do.

6 to 10 can be applied to the dorsal contact region 7 as well as to the dorsal contact region 7. It is also possible. However, in the present invention, when the rigid change region is provided in at least the back contact region 6 among the back contact region 6 and the dorsal contact region 7, the effect of the invention becomes remarkable. The body fluid treatment article according to the present invention described by taking the urine absorbent pad 1 as an example can also be used as a disposable diaper or a sanitary pad.

In the urine absorbent pad according to the present invention, the center portion and the wing portion are formed at least in the ventral contact region and the dorsal contact region, and a rigid change region extending in the front-back direction is formed. Since the deformation is difficult to extend to the wing portion, the wing portion is largely spread and closely adhered to the portion where the leg portion of the wearer is attached and the dorsal portion, thereby suppressing twisting of the urine absorbent pad to the body. With such a urine absorbent pad, there is no need to select a special one as a diaper or pants used in combination with the pad, and even if the adhesive or adhesive used in the conventional urine absorbent pad cannot be reused due to the surface dirt, the urine absorbed on the body Skew of the pad can be suppressed.

Claims (5)

It consists of a liquid-permeable surface sheet, an impermeable back sheet, and a body fluid absorbent core material interposed between these two sheets, and has a width direction intersecting with the front-rear direction and this direction, and a ventral contact region is formed in front of the front-rear direction. A disposable body fluid treatment article having a dorsal contact region formed at the rear and a crotch contact region formed between the two contact regions, The dorsal contact region is formed wider than the crotch contact region so that both sides of the dorsal contact region form a pair of wing portions, and a central portion located between each of the pair of wing portions and the pair of wing portions; A rigid change region including the core material and extending in the front-rear direction parallel to the center line on both sides of the center line bisecting the width of the body fluid treating article, and having a dimension of 2 to 15 mm in the width direction. Wherein the bending stiffness in the front-rear direction and the width direction of the back contact region is rapidly changed between the portion near the width direction inner side than the change region and the portion near the width direction outer side than the change region. Stiffness of the other part based on the stiffness of either part A disposable body fluid treatment article having a value of at least 1.5 times. The stiffness of claim 1, wherein the stiffness is rapidly changed because the inner near portion and the outer near portion include the core material having at least one of thickness and density different from the stiffness change region as a boundary. Disposable Fluid Treatment Supplies. The disposable body fluid treatment article according to claim 1 or 2, wherein the change region is a groove spaced apart from both portions in the width direction. The disposable body fluid treatment article according to claim 1 or 2, wherein the rigid change region is also formed in the dorsal contact region. The disposable body fluid treatment article according to claim 1 or 2, wherein the rigidity of the portion near the inner side in the width direction is at least 1.5 times the rigidity of the portion near the outer side in the width direction.