JP4370193B2 - Absorbent articles - Google Patents

Description

  The present invention relates to an absorbent article such as a disposable paper diaper, a sanitary napkin, an incontinence pad, etc., wherein a lotion is applied to the outer surface of a top sheet.

  Conventionally, disposable disposable diapers, sanitary napkins, incontinence pads, and the like have been widely used as absorbent articles that absorb excrement such as urine. In these absorbent articles, an absorbent body is disposed between a top sheet that is liquid-permeable and comes into contact with the wearer's skin, and a back sheet that is composed of an outer nonwoven fabric.

  Absorbent articles such as those described above rub against direct contact with the wearer's skin, causing excrement to come into contact with the wearer's skin and causing rashes and the like.

  Then, there exists an absorptive article which applied lotion on the top sheet of these absorptive articles for the purpose of protecting a wearer's skin (refer to patent documents 1). The lotion applied to the absorbent article is a mixture of an emollient for protecting the skin and a fixing agent that liquefies at a predetermined temperature, and is hydrophobic. Patent Document 1 describes that the lotion is applied to the surface of the top sheet in a stripe pattern that is aligned with the center line in the vertical direction and has a center on the center line.

  However, in the case of an absorbent article in which the lotion composition is applied to the top sheet in a linear pattern as shown in Patent Document 1, the hydrophobic lotion composition has a surface area where excrement such as urine is absorbed by the absorbent body. When the wearer lies on his back or prone, excrement such as urine flows to the abdomen and back, causing leakage. Moreover, the absorbent article to which the lotion composition is applied in a linear pattern passes through this lotion composition, and excrement such as urine flows to the abdomen and back, leading to leakage.

JP 2002-65727 A

  Therefore, the present invention has been made in view of the above problems, and its purpose is to prevent excretion such as urine from efficiently passing through the top sheet and being absorbed by the absorber, thereby preventing leakage. It is to provide an absorbent article.

The absorbent article according to the present invention is an absorbent article in which an absorbent body is disposed between a liquid-permeable top sheet and a back sheet composed of a nonwoven fabric, and at least the width direction of the outer surface of the top sheet. In the central part, the skin protection component application part including a hydrophobic lotion layer is applied in a flowing water pattern along the vertical direction, or a stripe-shaped application consisting of a straight line inclined at a predetermined angle with respect to the vertical center line In the pattern, the vertical center line is provided so as to cross the skin protection component application part and the skin protection component non-application part a plurality of times.

Moreover, those the absorbent article, the absorbent article, the topsheet is folded so as to bisect into a first region and a second region in one of the fold lines, the skin-protective ingredient coating unit A protective layer made of a compound having water solubility is laminated on the upper side of the lotion layer only in the first region, and when the skin protection component application part is folded in half, the first region And the skin protection component application part in the second region may be provided in an application pattern that overlaps.

According to the present invention, the skin protection component application part including a hydrophobic lotion layer is at least in the widthwise central part of the outer surface of the top sheet of the absorbent article , or a flowing water pattern application pattern along the vertical direction , or A striped application pattern consisting of a straight line inclined at a predetermined angle with respect to the longitudinal center line, and provided so that the longitudinal center line crosses the skin protection component application part and the skin protection component non-application part a plurality of times. Since the moisture of excrement such as urine is diffused and the surface area in contact with the top sheet increases, the moisture flowing through the skin protection component application part is also long because the skin protection component non-application part is long. As a result, leakage from the ventral side or back side can be prevented.

  Hereinafter, a disposable pants-type disposable diaper to which the present invention is applied will be described with reference to the drawings.

  As shown in FIGS. 1 and 2, the pants-type disposable diaper 1 includes a front body 2 and a back body 3 connected in series via a crotch portion 4. In the back body 3, right leg parts 5R, 5R are continuously provided in a concave shape, and in the center of the peripheral part 1B, left leg parts 6L, 6L are provided in a concave shape in the front body 2 and the back body 3, The waist portions 7W and 7W are provided over the entire length of each of the short sides 1C and 1D positioned above and below in FIG. In addition, joint portions 8R and 8L where the front body 2 and the back body 3 are joined to each other are provided at both ends of the peripheral portions 1A and 1B. The pants-type disposable diaper 1 has an ultrasonic welding, a thermal welding, or the like by joining the joint 8R of the front body 2, the joint 8R of the back body 3, the joint 8L of the front body 2, and the joint 8L of the back body 3. Are joined together. By joining the front body 2 and the back body 3 at the joints 8R and 8L, the pants-type disposable diaper 1 has the right leg opening 5 constituted by the right leg surrounding parts 5R and 5R of the front body 2 and the back body 3. The left leg opening 6 is constituted by the left leg surrounding parts 6L, 6L of the front body 2 and the back body 3, and the trunk opening 7 is constituted by the waist parts 7W, 7W of the front body 2 and the back body 3.

  In the vicinity of the waist portions 7W and 7W of the front body 2 and the back body 3, there is provided an elastic member 10W composed of one or a plurality of elastic yarns or the like for bringing the waist opening 7 into close contact with the wearer's waist. ing. Further, one or a plurality of elastic members 10B, 10B for bringing the front body 2 and the back body 3 into close contact with the abdomen and the back side of the wearer are provided on the crotch 4 side from the elastic member 10W of the front body 2. It has been.

  An absorber 9 that absorbs excreta is disposed at the center of the inner surface extending from the front body 2 to the back body 3. As shown in FIG. 3, a pants-type disposable diaper 1 in which a front body 2 and a back body 3 are connected in series via a crotch part 4 includes a liquid-permeable top sheet 11 on the inside and a nonwoven fabric on the outside. It is comprised so that the absorber 9 may be pinched | interposed with the comprised back seat | sheet 12. FIG.

  Here, the top sheet 11 constitutes a surface that is in direct contact with the wearer's skin, and preferably has adaptability, flexibility, and non-irritating properties, and the absorbent body 9 is provided with moisture of excrement. It is liquid permeable to absorb. Therefore, a porous or non-porous nonwoven fabric or a porous plastic sheet is used for the top sheet 11. As the material fibers constituting the nonwoven fabric, synthetic fibers such as polyethylene, polypropylene, and other olefins, polyesters, polyamides, and the like, rayon, recycled fibers such as cupra, and natural fibers such as cotton are used. Manufactured by a processing method such as a spun bond method, a thermal bond method, a melt blown method, or a needle punch method.

  The back sheet 12 is disposed on the outermost side opposite to the top sheet 11 so that liquid such as moisture absorbed by the absorber 9 does not leak to the outside, and the wearer's clothes and the like are not soiled. Is for. For the backsheet 12, for example, a nonwoven fabric obtained by processing synthetic fibers such as polyethylene and polypropylene by a processing method such as an air-through method, a spunbond method, or a point bond method is used. Further, as the back sheet 12, a water-permeable and moisture-permeable sheet having air permeability from the viewpoint of preventing stuffiness, and a composite sheet of a nonwoven fabric and a prevention sheet may be used.

  The top sheet 11 and the back sheet 12 as described above are integrally joined to each other by sandwiching the above-described absorber 9 between them by ultrasonic welding, heat welding, or the like.

  As shown in FIG. 4, the excrement of the wearer sideways leaks from the right leg opening 5 and the left leg opening 6 at both side edges of the absorbent body 9 sandwiched between the top sheet 11 and the back sheet 12. Standing cuffs 13 are provided to prevent this. Specifically, as shown in FIG. 1, the standing cuffs 13 are provided on both sides of the absorber 9 on the top sheet 11 side and along the right leg surrounding parts 5R and 5R and the left leg surrounding parts 6L and 6L. It has been. As shown in FIG. 4, the standing cuff 13 is erected so that the tip is directed toward the center of the absorber 9. Further, an elastic member 13A is provided on the distal end side of the standing cuff 13 so as to be in close contact with the vicinity of the base of the wearer's thigh when worn. When the standing cuff 13 is worn, the standing cuff 13 is in close contact with the vicinity of the base of the wearer's thigh so that liquid such as water of excrement does not leak outside. The standing cuff 13 is made of, for example, the material used for the top sheet 11 or the back sheet 12 described above, and is attached by ultrasonic welding, heat welding, or the like. Of course, the standing cuff 13 may be provided integrally with the top sheet 11 or the back sheet 12 using the side edge portions of the top sheet 11 or the back sheet 12.

  By the way, as shown in FIG. 5, the skin protection component part 20 is provided in the approximate center part of the top sheet 11 on the surface of the top sheet 11 mentioned above. This skin protection component part 20 is provided on the surface of the top sheet 11 in the region where the absorber 9 is disposed. More specifically, the skin protection component part 20 is provided in a region A shown in FIGS. 4 and 5 excluding a region where the standing cuff 13 tilting inward is in contact with the region where the absorber 9 is present. ing. This is because the skin protection component portion 20 serves as an adhesive to prevent the standing cuff 13 and the top sheet 11 from adhering. In the skin protection component part 20, the first protective layer 21 is first formed on the surface of the top sheet 11, then the lotion layer 22 is formed, and the second protective layer 23 is formed on the outermost side.

  The 1st protective layer 21 is comprised from the compound which has water solubility, and is apply | coated in the area | region A of the surface of the top sheet 11 so that the top sheet 11 can be smoothed.

  The lotion layer 22 protects the skin from irritation caused by contact with the excrement and contact with the top sheet 11, and is applied to the upper surface of the first protective layer 21. The lotion layer 22 is formed from a compound that forms an oily film on the skin in order to protect the wearer's skin. For example, the lotion layer 22 is a compound made of vegetable oil, animal fat or the like. The lotion layer 22 is hydrophobic so that the oily film does not flow down from the skin due to moisture such as excreta. In addition, the lotion layer 22 may contain a compound having a deodorizing effect, a fragrance effect, or the like in addition to the oily film as described above.

  The second protective layer 23 is made of a compound having water solubility, and is applied to the lotion layer 22 in an overlapping manner. The 2nd protective layer 23 is formed from the compound which has water solubility also in the temperature of 25 degrees C or less so that it may melt | dissolve with moisture, such as excrement.

  Here, the melting points of the first protective layer 21, the lotion layer 22, and the second protective layer 23 are such that the first protective layer 21> the second protective layer 23 ≧ the lotion layer 22. That is, since the first and second protective layers 21 and 23 sandwiching the lotion layer 22 have a higher melting point than the lotion layer 22, prevent the diaper from being absorbed by the absorber 9 or the like when not in use. Yes.

  Further, the first protective layer 21 laminated on the top sheet 11 side has a higher melting point than the second protective layer 23 laminated on the outermost side. This is because the second protective layer 23 is melted at body temperature or the like when touching the skin, so that the already melted lotion layer 22 is transferred to the skin. On the other hand, if the lowermost first protective layer 21 is also melted when the second protective layer 23 is melted, the already melted lotion layer 22 is absorbed by the absorber 9. Therefore, the first protective layer 21 has a higher melting point than the second protective layer 21. That is, when the diaper 1 is used, the skin protection component part 20 melts the lotion layer 22, and then or simultaneously, the second protection layer 23 that first contacts the skin melts, and the lotion layer 22 is transferred to the skin. After the lotion layer 22 is transferred to the skin, the lowermost first protective layer 21 is melted by urination or the like and absorbed by the absorber 9.

  Therefore, for example, the second protective layer 23 in contact with the skin is preferably about 30 ° C. whose melting point is lower than the body temperature or the like. On the other hand, the melting point of the first protective layer 21 as the lowermost layer is not particularly limited as long as it melts after the second protective layer 23. Further, the lotion layer 22 is preferably a solid or a waxy semi-solid at room temperature.

  In addition, the skin protection component unit 20 having the layer structure as described above may be skin protection component units 30, 40, and 50 as shown in FIGS. 6, 7, and 8.

  Below, the skin protection component part 30 is demonstrated. In addition, in the skin protection component parts 30, 40, and 50 below, the same code | symbol is attached | subjected to the structure similar to the skin protection component part 20, and the detail is abbreviate | omitted.

  The skin protection component part 30 is applied on the surface of the top sheet 11 in the region where the absorber 9 is present. The skin protection component portion 30 is formed in a region A shown in FIGS. 4 and 6 excluding a region where the standing cuff 13 can contact among regions where the absorber 9 is present. In the skin protection component part 30, a first protective layer 21, a second protective layer 23, a lotion layer 22, and a second protective layer 23 are laminated in order on the surface of the top sheet 11. That is, the skin protection component part 30 is configured to sandwich the lotion layer 22 between the above-described second protection layers 23 and 23.

  Further, the lotion layer 22 is not applied to the entire surface of the first protective layer 21, and is distributed, for example, at a predetermined interval. Further, the lotion layer 22 is formed by being sandwiched between the second protective layers 23 and 23. Accordingly, the skin protection component 30 can prevent the dissolved lotion layer 22 from flowing out until the lotion layer 22 is transferred to the wearer's skin, thereby improving the effect of the skin protection function. Can do. Further, even if the lotion layer 22 is dispersed and disposed in a small amount, the lotion layer 22 is sandwiched between the second protective layers 23 and 23 and there is no fear of outflow, and a necessary amount can be transferred to the skin. Note that the skin protection component part 20 described above may also be formed by dispersing the lotion layer 22 like the skin protection component part 30.

  Next, as shown in FIGS. 7 and 8, the skin protection component parts 40 and 50 will be described. The pants-type paper diaper 1 is normally shipped after being formed into a two-fold or three-fold form after the lotion layer 22 is formed on the surface of the top sheet 11 and packed.

  As shown in FIG. 7A, the top sheet 11 on which the skin protection component part 40 is formed is divided into a first region 41 and a second region 42 along the crease line B. In the skin protection component part 40 of the first region 41, the first protection layer 21, the lotion layer 22, and the second protection layer 23 are laminated in the same manner as the skin protection component part 20. In the skin protection component portion 40 of the second region 42, the first protective layer 21 and the lotion layer 22 excluding the second protective layer 23 are laminated.

  When the pants-type paper diaper 1 is folded in half, the second protective layer 23 applied to the first region 41 and the lotion layer 22 applied to the second region 42 face each other. (A) Folded in the direction of the middle arrow X. For this reason, the skin protection component part 40 can avoid that the lotion layers 22 of the 1st area | region 41 and the 2nd area | region 42 contact when folded in half. Further, when the second protective layer 23 is provided in the second region 42, the second protective layer 23 and the second protective layer 23 in the first region 41 are in contact with each other, and are bonded to each other. Although the skin protection component part 40 may be peeled off, since the second protective layer 23 is not provided in the second region 42 here, the first region 41 and the second region 42 It is possible to prevent them from being joined even when they are overlapped.

  Moreover, as shown in FIG. 8, the top sheet 11 in which the skin protection component part 50 is formed has a first region 51, a second region 52, and a third region by two fold lines C and D. 53. In the first region 51 and the second region 52, the first protective layer 21, the lotion layer 22, and the second protective layer 23 are laminated in the same manner as the skin protection component part 20. In the third region 53, the first protective layer 21 and the lotion layer 22 except for the second protective layer 23 are laminated.

  The skin protection component 50 is folded so that the third region 53 and the second region 52 face each other in the direction of the arrow Y at the crease line C shown in FIG. Next, in the skin protection component unit 50, the first region 51 is folded in the direction of the arrow Z along the fold line D. At this time, the lotion layer 22 of the skin protection component portion 50 is always in a state of being sandwiched between the first protective layer 21 and the second protective layer 23. For this reason, the skin protection component part 50 can avoid that the lotion layers 22 contact. Further, when the second protective layer 23 is provided in the third region 53, the second protective layer 23 in the second region 52 is bonded to the skin protective component portion 50 in one region. However, here, since the second protective layer 23 is not provided in the third region 53, the bonding is performed even when the second region 52 and the third region 53 are overlapped. Can be prevented. Since the first region 51 is in contact with the back sheet 12 when folded in three, the first protective layer 21, the lotion layer 22, and the second protective layer 23 are provided.

  In the pants-type paper diaper 1 in which the skin protection component parts 20, 30, 40, 50 having the layer structure as described above are provided on the outer surface of the top sheet 11, the first of the skin protection component parts 20, 30, 40, 50 is provided. Since the melting point of the first protective layer 21 and the second protective layer 23 is higher than that of the lotion layer 22, even if the lotion layer 22 having the lowest melting point is dissolved, the absorber 9 is prevented from absorbing the lotion. be able to. Moreover, in the relationship between the 1st protective layer 21 and the 2nd protective layer 23, since melting | fusing point of the 2nd protective layer 23 which touches skin is lower than melting | fusing point of the 1st protective layer 21, at the time of wear first When the second protective layer 23 is dissolved and the lotion layer 22 is transferred onto the skin and urination is performed, the first protective layer 21 is absorbed by the absorbent body 9. Therefore, the lotion layer 22 is surely transferred and applied to the skin, and can sufficiently exhibit the skin protection effect. Further, since the lotion layer 20 has already been transferred to the skin, urination or the like is surely absorbed by the absorbent body 9, and leakage can be prevented.

  Further, as described above, when the skin protection component portions 40 and 50 are applied, the outer second protective layers 23 are not brought into contact with each other in the regions facing each other at the time of folding. For example, the second protective layer 23 is provided in each region, and the second protective layer 23 is bonded to each other so that the skin protection component portions 40 and 50 in one region are in the other region's skin. It can prevent joining with the protection component parts 40 and 50, and the skin protection component parts 40 and 50 of the other area | region being lost.

  Although the skin protection component parts 20, 30, 40, 50 provided on the pants-type paper diaper 1 as described above may be provided on the entire surface of the top sheet 11, they are partially applied as long as the skin protection effect is obtained. You may do it. In addition, as described above, the lotion layer 22 is transferred to the skin when the pants-type paper diaper 1 is worn, but the pants-type paper diaper 1 is provided with the skin protection component 20 when worn. The entire region does not adhere to the skin. Therefore, the portion of the lotion layer 22 remaining on the surface of the top sheet 11 is difficult to absorb urine and the like. Therefore, by forming the skin protection component portions 20, 30, 40, and 50 so as to have a predetermined pattern, urination can be diffused on the top sheet 11 and efficiently absorbed by the absorbent body 9. Hereinafter, the skin protection component part 20 will be described as an example.

  As shown in FIG. 1 and FIG. 9A, the skin protection component part 20 is formed in a wavy line shape, that is, a flowing water pattern in the longitudinal direction of the top sheet 11. The urination can be diffused on the top sheet 11 and the uncoated part of the skin protection component part 20 can be made longer than the case where the top sheet 11 is formed in a stripe shape, that is, a straight line shape. Before reaching the surrounding portions 7W and 7W, the absorbent body 9 can absorb them. Thereby, urination etc. do not reach both ends through the lotion layer 22, and urination etc. can be prevented from leaking from the waist portions 7W, 7W.

Further, as shown in FIG. 9B, the skin protection component part 20 as a reference example is not parallel to the longitudinal center line of the top sheet 11, specifically, the longitudinal center of the top sheet 11. You may provide a flowing water pattern in the direction substantially orthogonal to the line. In this case, although the non-application part of the skin protection component part 20 becomes longer than the case where the skin protection component part 20 is applied linearly, the length is shorter than the longitudinal direction. However, urination hits the standing cuff 13 even when passing through the lotion layer 22, and therefore side leakage can be prevented.

Moreover, as shown in FIG.9 (C), you may provide the skin protection component part 20 as a reference example in the ring shape around the groin part. The position corresponding to the groin part is a position where urination or the like directly hits in the top sheet 11, and by providing the skin protection component part 20 so as to surround the position facing the groin part, urination or the like can be performed in the ring. Is absorbed by the absorber 9.

  Further, as shown in FIG. 9D, the skin protection component unit 20 is not parallel to the longitudinal center line of the top sheet 11, specifically, a predetermined center line in the longitudinal direction of the top sheet 11. You may provide in the linear form inclined at an angle. In this case, as in the case where the water flow pattern is provided in a direction substantially orthogonal to the longitudinal center line of the top sheet 11 of FIG. 9C, urination hits the standing cuff 13 even after passing through the lotion layer 22. Side leakage can be prevented.

Furthermore, as shown in FIG. 9E, the skin protection component part 20 as a reference example may be provided in a dot shape. As a result, urination is diffused to a region where the dot-like skin protection component part 20 is not provided, and is efficiently absorbed by the absorber 9.

As shown in FIG. 9 (F), the skin protection component part 20 as a reference example may be provided so that the unapplied part where the skin protection component part 20 is not applied has a vein shape. Also by this pattern, urination is diffused to the uncoated part of the vein-shaped skin protection component part 20 and is efficiently absorbed by the absorber 9.

  Next, the coating method of the skin protection component part 20 is demonstrated.

As shown in FIG. 10, the skin protection component unit 20 is supplied with a base material to be the top sheet 11 from a roll 61 wound in a roll shape, and the first protective layer 21 is applied to the surface of the base material from the coater 62. Is applied. Next, the lotion layer 22 is applied from the coater 63 onto the formed first protective layer 21, and the second protective layer 23 is applied from the coater 64 onto the formed lotion layer 22 to protect the skin. The component part 20 is formed. The application pattern of the skin protection component part 20 can be applied to an application pattern other than a straight line such as a flowing water pattern by attaching a swinging device to the coater head of each coater 62, 63, 64, for example.

  In addition, as a coating method of the skin protection component part 20, it is not restricted to the above, For example, the gravure coating by application of a printing technique, a flexo coating, the coating method which applied the adhesion technique of the hot-melt-adhesive, etc. are used. May be.

  As described above, the pant-type paper diaper 1 to which the present invention is applied has been described as an example. However, the present invention is not limited to this, and the present invention is also applicable to newborn baby tape diapers, sanitary napkins, incontinence pads, and the like. be able to.

  As described above, the skin protection component portions 20, 30, 40, and 50 are described as being formed in a predetermined pattern. However, the present invention is not limited to this. It may be provided.

  Hereinafter, the Example which apply | coated the skin protection component part 20 mentioned above to the predetermined pattern and the comparative example for comparing with an Example are demonstrated.

<Example 1>
In Example 1, as shown to FIG. 9 (A), the skin protection component part 20 is formed in the flowing water pattern in the centerline of the longitudinal direction of the top sheet 11. As shown in FIG.

< Reference Example 2 >
In Reference Example 2 , as shown in FIG. 9B, the skin protection component 20 is non-parallel to the longitudinal center line of the top sheet 11, specifically, substantially orthogonal to the longitudinal direction of the top sheet 11. It is formed in a flowing water pattern in the direction.

< Reference Example 3>
In Reference Example 3, as shown in FIG. 9C, the skin protection component part 20 is formed in a ring shape around the inguinal part.

<Example 4>
In Example 4, as shown in FIG. 9D, the skin protection component 20 is not parallel to the longitudinal center line of the top sheet 11, specifically, to the longitudinal center line of the top sheet 11. It is formed in a straight line inclined at a predetermined angle.

< Reference Example 5>
In Reference Example 5, as shown in FIG. 9E, the skin protection component part 20 is formed on the top sheet 11 in a dot shape.

<Reference Example 6 >
In Reference Example 6 , as shown in FIG. 9F, the portion of the top sheet 11 where the skin protection component part 20 is not applied is formed in a vein shape.

<Comparative Example 1>
In Comparative Example 1, nothing is applied on the top sheet 11.

<Comparative example 2>
In Comparative Example 2, the skin protection component part 20 is formed in a stripe shape parallel to the longitudinal center line of the top sheet 11.

  Next, the length of the liquid flow was measured for each of the obtained Examples and Comparative Examples.

  Hereinafter, Table 1 shows the results of measuring the length of the liquid flow in each example and each comparative example.

  The length of the liquid flow was measured as follows. As shown in FIG. 11, first, a pants-type disposable diaper 1 in which a skin protecting component 20 is applied to the inclined plate 100 inclined at 45 ° with respect to the horizontal plane in the patterns of Examples 1 to 6 and Comparative Examples 1 and 2. Is set so that the back sheet 12 faces the inclined plate 100, the front body 2 is positioned above the inclined plate 100, and the rear body 3 is positioned below the inclined plate 100. The dropping point 101 is a position moved 10 cm from the longitudinal end of the absorber 9 on the front body 2 side to the back body 3 on the longitudinal center line. The dropping device 102 drops artificial urine at 12.5 ml / sec and 70 ml to the pant-type paper diaper 1 in about 5.6 seconds at a position 1 cm away from the dropping point 101 of the pant-type paper diaper 1. The artificial urine is injected into the dropping device 102 at a rate of 25 ml / sec by an injector (not shown). The length of the liquid flow is measured by measuring the maximum reachable distance from the dropping point 101 of the top sheet 11 to the surface of the top sheet 11 flowing in the liquid state below the inclined plate 100. In addition, the above operation is performed three times at 10-minute intervals to measure the maximum reach distance of each. At the time of measurement of each example sample, the same pants-type paper diaper 1 was used, and only the top sheet 11 was replaced to perform measurement. Table 1 shows the length (mm) of the liquid flow for each example and comparative example.

  In each example, the same measurement was performed when artificial urine flowed in the width direction of the absorber 9 and was blocked by the standing cuff 13. In addition, the measurement results at that time are shown in Table 1 in hatched bold letters. Moreover, the pants-type paper diaper 1 for measuring the length of the liquid flow is GOO. An M size of N was used.

From the measurement results shown in Table 1, Examples 1, 4, Reference Examples 2, 3, 5, 6, and Comparative Example 2 in which the skin protection component part 20 is applied are compared in which the skin protection component part 20 is not applied. Compared to Example 1, it can be seen that the length of the liquid flow is long. In Examples 1 and 4, Reference Examples 2 , 3 , 5 , and 6 in which the skin protection component 20 is applied in a predetermined pattern, the skin protection component 20 is striped in parallel to the longitudinal direction of the top sheet 11. It can be seen that the length of the liquid flow does not exceed 150 mm in any measurement compared to Comparative Example 2 applied to the film.

  In Comparative Example 1, since the skin protection component part 20 is not applied at all, the top sheet 11 directly rubs against the wearer's skin and rubs, causing excrement to come into contact with the skin.

  In Comparative Example 2, the length of the liquid flow at the second measurement is 160 mm, and the length of the liquid flow at the third measurement is 215 mm. When the length of the liquid flow is 150 mm or more, it is said that it causes leakage from the waistline portion 7W, and it can be seen that Comparative Example 2 exceeds 150 mm from the second measurement.

In contrast to these comparative examples, each example and reference example is provided with the skin protection component part 20 so as to be non-parallel to the longitudinal center line, so that the liquid flow leading to leakage from the waist part 7W The length can be suppressed, and the rash caused by the application of the lotion agent can be suppressed.

  From the above, it can be seen that providing the skin protection component part 20 so as to be non-parallel to the longitudinal center line is very important in preventing leakage from the waistline part 7W.

It is an expanded view of the underpants type paper diaper which applied this invention. It is a front view of the underpants type paper diaper to which the present invention is applied. It is principal part sectional drawing equivalent to the III-III cut surface in FIG. It is a partially cutaway perspective view of a standing cuff. It is a principal part expanded sectional view of the lotion layer apply | coated to the top sheet surface. It is a principal part expanded sectional view of another lotion layer apply | coated to the top sheet surface. It is a principal part expanded sectional view of the lotion layer apply | coated to the top sheet surface, (A) is a principal part expanded sectional view of the lotion layer before a top sheet is folded in half, (B) is top It is a principal part expanded sectional view of the lotion layer of the state which folded the sheet | seat in two. It is a principal part expanded sectional view of the lotion layer apply | coated to the top sheet surface, (A) is a principal part expanded sectional view of the lotion layer before a top sheet is folded in three, (B) is top It is a principal part expanded sectional view of the lotion layer of the state which folded the sheet | seat in three. (A)-(F) are the top views which showed typically each other application | coating pattern of the lotion layer apply | coated to the top sheet surface. It is a schematic side view explaining the process of forming a lotion layer on the top sheet surface. It is the schematic for demonstrating the method to measure the length of the liquid flow in the application pattern in which the skin protection component part was formed.

Explanation of symbols

  1 pants-type disposable diaper, 2 front body, 3 back body, 4 crotch, 5 right leg opening, 5R right leg circumference, 6 left leg circumference, 6L left leg circumference, 7 trunk opening, 7W waist circumference 8R, 8L Joint, 9 Absorber, 10W, 10B Elastic member, 11 Top sheet, 12 Back sheet, 13 Standing cuff, 20, 30, 40, 50 Skin protection component, 21 First protective layer, 22 Lotion Layer, 23 second protective layer, 41, 51 first region, 42, 52 second region, 53 third region

Claims (2)

In an absorbent article formed by disposing an absorbent body between a liquid-permeable top sheet and a back sheet composed of a nonwoven fabric,
At least in the center in the width direction of the outer surface of the top sheet, a skin protection component application portion including a hydrophobic lotion layer is applied in a flowing pattern along the vertical direction or a predetermined center line in the vertical direction. Absorption characterized in that it is a striped application pattern comprising straight lines inclined at an angle , and the longitudinal center line is provided so as to cross the skin protection component application part and the skin protection component non-application part a plurality of times. Sex goods. The absorbent article is folded in half so that the top sheet bisects into a first region and a second region at one fold line,
The skin protection component application part is formed by laminating a protective layer made of a compound having water solubility on the lotion layer only in the first region, and the skin protection component application part is folded in half. 2. The absorbent article according to claim 1, wherein the skin protection component application part in the first region and the second region overlap each other.

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