JP2010154902A - Auxiliary pad for absorption - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an auxiliary pad for absorption having both of a simple absorbing function and an absorbing capacity increasing function. <P>SOLUTION: The auxiliary pad 1 for absorption is constituted so that an absorber 4 is interposed between a liquid-permeable surface sheet 3 and a liquid-permeable back sheet 2 and a liquid-impermeable or hardly liquid-permeable leakproof sheet 6 is arranged on the outer surface side of the liquid-permeable back sheet 2 so as to be fixed to the outer peripheral part of the outer surface of the liquid-permeable back sheet 2. The leakproof sheet 6 is made possible to be cut off at the central part in its width direction along its longitudinal direction. The absorbing auxiliary pad 1 is used so as to be capable of selecting a use made mounting the surface of the liquid-permeable surface sheet 3 so as to set the same on a skin surface side without cutting off the leakproof sheet 6 at the central part in its width direction and a use mode mounting the surface of the liquid-permeable surface sheet 3 so as to set the same on the skin surface side in a state that the leakproof sheet 6 is cut off at the central part in its width direction and the leakproof sheet parts on respective left and right sides are turned over toward the liquid-permeable surface sheet 3. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention is an absorption auxiliary pad used as an auxiliary pad, such as a urine absorption pad and an incontinence pad, and is intended for simple absorption in which only an auxiliary pad that has absorbed body fluid is replaced in consideration of economy and the like. The present invention relates to an absorbent auxiliary pad that has both a function as an auxiliary pad and a function as an auxiliary pad for reinforcing absorbency used by being laminated on a paper diaper in order to supplement the absorbent capacity of a paper diaper or the like.

  Conventionally, absorption auxiliary pads used as auxiliary pads such as urine absorption pads and incontinence pads have been known to have the following two functions. First, there is a simple absorption auxiliary pad that is used by exchanging only an auxiliary pad that has absorbed body fluid for the purpose of reducing economic burden or absorbing light incontinence when wearing cloth underwear. Such a simple absorbent auxiliary pad is provided with a liquid-impermeable sheet material on the outer surface side of the absorber so that urine or the like absorbed by the absorber does not leak to the outer surface side. By wearing this auxiliary pad for simple absorption, in the case of a small amount of urine leakage, it is only necessary to replace this auxiliary pad, reducing the burden both economically and laborably than replacing the entire disposable diaper. can do. Also, since cloth underwear can be used, it is also suitable for cases where there are toilet training for infants and mild incontinence, but paper diapers are not used in the daytime. This auxiliary pad for simple absorption is mainly used when it can be changed frequently such as in the daytime.

  On the other hand, as an auxiliary pad having a second function, there is an auxiliary pad for reinforcing reinforcing capacity that is used by being laminated on the surface side of the absorbent article for the purpose of supplementing the absorbent capacity of the absorbent article such as a paper diaper. In the case of such an auxiliary pad for reinforcing capacity absorption, the outer surface side of the absorbent body is made of a liquid-permeable sheet material so that urine or the like absorbed by the absorbent body quickly moves to the absorbent body of the disposable diaper ( See Patent Documents 1 and 2 below).

For example, Patent Document 1 below discloses an auxiliary absorbent material for a disposable diaper in which a liquid absorber is sandwiched between a liquid-permeable top sheet and a liquid-permeable back sheet. Moreover, in the following patent document 2, it has a fixed end in the both sides of the absorptive main body by which the absorber was interposed between the liquid-permeable surface sheet and the back sheet, and a free end in the width direction center side in the back sheet side An auxiliary absorbent article comprising a pair of liquid-impermeable or water-repellent liquid-guiding sheet portions having the above is disclosed.
JP-A 63-309601 JP 2004-361442 A

  However, in the auxiliary absorbent material described in Patent Document 1, since the top sheet and the back sheet are each formed of a liquid-permeable sheet, the function as the auxiliary pad for reinforcing absorption is provided, but the back sheet is not used. Since it is not liquid-permeable, urine etc. may leak to the outer surface side of the auxiliary pad, and the function as the auxiliary pad for simple absorption has not been sufficiently exhibited. Moreover, the said patent document 2 improves the transfer of the bodily fluid from the auxiliary pad in the invention of the said patent document 1 to a disposable diaper etc., and the auxiliary pad for simple absorption similarly to the invention of the said patent document 1 There was a problem that could not fully function as.

  On the other hand, in order to make such an auxiliary pad for reinforcing capacity function as an auxiliary pad for simple absorption, simply placing an impermeable sheet material on the outer surface side of the auxiliary pad for absorbing capacity As a function is lost.

  Thus, in the conventional auxiliary pad, either the simple absorbent auxiliary pad or the absorbent reinforcing auxiliary pad is used depending on whether the back sheet provided on the outer surface side is liquid-impervious or liquid-permeable. It could only have one function. For this reason, the user must appropriately select an auxiliary pad having a function according to the purpose of use, and there are many cases where the function cannot be reliably exhibited due to a selection mistake. Moreover, the user must be provided with two types of auxiliary pads corresponding to each function, and the reduction of the economical burden has been impaired.

  Then, the main subject of this invention is providing the auxiliary pad for absorption which has the function as an object for simple absorption, and the function for an absorption capability reinforcement.

In order to solve the above-mentioned problem, as the present invention according to claim 1, an absorbent body is interposed between the liquid-permeable top sheet and the liquid-permeable back sheet, and on the outer surface side of the liquid-permeable back sheet. , An auxiliary pad for absorption provided with a liquid-impervious or hardly liquid-permeable leakproof sheet fixed at the outer periphery,
The leak-proof sheet is separable along the longitudinal direction at the central portion in the width direction, and the auxiliary pad for absorption is mounted with the liquid-permeable surface sheet surface as the skin surface side without being separated at the central portion in the width direction. The use of the liquid-permeable surface sheet is cut off at the center in the width direction and the left and right leakage-proof sheet portions are turned over to the liquid-permeable surface sheet. It is possible to provide an auxiliary pad for absorption, which is characterized in that it can be selected in accordance with the usage mode.

  In the first aspect of the present invention, the auxiliary pad for absorption is used in a state where the liquid-permeable surface sheet surface is attached as a skin surface side without being cut off at the center portion in the width direction, and the leakproof sheet is disposed in the center in the width direction. It is possible to select a usage mode in which the liquid-permeable surface sheet surface is mounted on the skin surface side in a state where the leak-proof sheet portions on the left and right sides are turned over to the liquid-permeable surface sheet side.

  For this reason, in the case of a usage mode in which the liquid-permeable surface sheet surface is attached as the skin surface side without being cut off at the center in the width direction, the liquid-impermeable liquid fixed at the outer peripheral side to the outer surface side of the liquid-permeable back sheet Since a water-proof or hardly liquid-permeable leak-proof sheet is disposed, urine or the like absorbed by the absorbent body does not leak to the outer surface side.

  Furthermore, the leakage-proof sheet is cut off at the center in the width direction, and the liquid-permeable surface sheet surface is mounted on the skin surface side with the leakage-proof sheet portions on the left and right sides turned over to the liquid-permeable surface sheet side. In this case, since the liquid-impervious or hardly liquid-permeable sheet material is not disposed on the outer surface side of the absorbent body, and the three-dimensional gathers are formed on both sides of the surface side by the inverted leak-proof sheet, the absorbent body The urine or the like absorbed in the urine is quickly transferred to an absorbent article such as a paper diaper, and the absorbent capacity of the absorbent article such as a paper diaper can be compensated.

  Thus, the auxiliary pad for absorption according to the present invention can have both a function for simple absorption and a function for reinforcing absorption.

  According to a second aspect of the present invention, there is provided the auxiliary pad for absorption according to the first aspect, wherein the leak-proof sheet comprises a laminate of a waterproof film and a water-repellent nonwoven fabric.

  The invention according to claim 2 is one configuration example of the leak-proof sheet, and the leak-proof sheet is preferably a laminate of a waterproof film and a water-repellent nonwoven fabric. Here, the arrangement relationship with respect to the auxiliary pad for absorption may be either a waterproof film or a water-repellent nonwoven fabric on the outer surface side, but a good wearing feeling in the usage mode in which a three-dimensional gather is formed on both sides of the surface side described above. Therefore, it is preferable to arrange the waterproof film on the outer surface side and the water-repellent nonwoven fabric on the absorber side.

  According to a third aspect of the present invention, there is provided the absorbent auxiliary pad according to the first aspect, wherein the leak-proof sheet is made of a water-repellent nonwoven fabric.

  The invention according to claim 3 is another configuration example of the leak-proof sheet, and in a usage mode in which the liquid-permeable surface sheet surface is attached as a skin surface side without being cut off at the center in the width direction, the daytime This is a particularly effective configuration example when importance is attached to light incontinence.

  As the present invention according to claim 4, in the leak-proof sheet, elastic stretch members are disposed along the longitudinal direction on both sides of the position where separation is possible. An auxiliary pad for absorption is provided.

  In the invention according to claim 4, the elastic gathering members are disposed along the longitudinal direction on both sides of the position where the leakage prevention sheet can be separated, respectively, so that the three-dimensional gathers are formed on both side portions on the surface side. In the usage mode to be formed, the standing state of the three-dimensional gather can be satisfactorily maintained.

  As this invention which concerns on Claim 5, the said leak-proof sheet | seat is made separable by forming the perforation which can be teared along a longitudinal direction in the width direction center part. The described absorbent auxiliary pad is provided.

  The invention according to claim 5 defines specific means that enables the leakage-proof sheet to be separated, and forms a perforation that can be torn along the longitudinal direction at the center in the width direction of the leakage-proof sheet. It is what you do.

  As the present invention according to claim 6, the leak-proof sheet can be separated by disposing a hard film that can be torn in a strip shape along the longitudinal direction at the center in the width direction. An absorbent auxiliary pad according to any of the above is provided.

  The invention described in claim 6 defines other means that enables the leakage-proof sheet to be separated, and a hard film that can be torn in a band shape along the longitudinal direction at the center in the width direction of the leakage-proof sheet. It is arranged.

  As this invention which concerns on Claim 7, the said leak-proof sheet | seat was previously cut | disconnected along the longitudinal direction in the width direction center part, and was fixed to the said back surface sheet side along the longitudinal direction in the said width direction center part. The absorption auxiliary pad according to any one of claims 1 to 4, wherein the absorbent pad is detachable by joining the cutting edge portion of the leak-proof sheet to the joining means in a detachable manner.

  The invention according to claim 7 is a means that enables suitable leakage when the leak-proof sheet is pre-cut along the longitudinal direction at the central portion in the width direction, and along the longitudinal direction at the central portion in the width direction. The cutting edge portion of the leak-proof sheet is detachably joined to the joining means fixed to the back sheet side. In the usage mode in which the liquid-permeable surface sheet surface is mounted as the skin surface side without being separated at the center in the width direction by providing the joining means, the leak-proof sheet is disposed on the outer surface side of the liquid-permeable back sheet. It becomes possible to hold the state. Furthermore, in the usage mode in which the leak-proof sheet is cut off at the center in the width direction and the leak-proof sheet portions on the left and right sides are turned over to the liquid-permeable surface sheet side, the liquid-permeable surface sheet surface is attached as the skin surface side. The joining means can be used for preventing misalignment with absorbent articles such as paper diapers.

  As an aspect of the present invention according to claim 8, there is provided an auxiliary for absorption according to any one of claims 1 to 7, wherein means for preventing misalignment at the time of mounting are disposed on both outer ends of the leakproof sheet in the longitudinal direction. A pad is provided.

  The invention according to claim 8 is an absorbent article such as an absorbent auxiliary pad and a paper diaper, underwear, etc. In order to prevent misalignment, a means for preventing misalignment at the time of mounting is provided on the outer surface side of the leak-proof sheet and at both ends in the longitudinal direction.

  As an aspect of the present invention according to claim 9, a pair of left and right three-dimensional gathers standing on the surface side in the longitudinal direction is provided on both side portions of the topsheet. An auxiliary pad is provided.

  In the invention according to the ninth aspect, by providing a pair of left and right three-dimensional gathers standing on the surface side in the longitudinal direction on both sides of the top sheet, the liquid permeation can be performed without separation at the center portion in the width direction. In the usage mode in which the surface sheet surface is attached as the skin surface side, the three-dimensional gather is formed so that leakage can be prevented, and the above-mentioned leakage prevention sheet is separated at the center in the width direction and the right and left sides are prevented. In the usage mode in which the liquid-permeable surface sheet surface is mounted as the skin surface side with the leakage sheet portion turned over to the liquid-permeable surface sheet side, double solid gathers are provided on both sides of the surface side of the auxiliary pad for absorption. Therefore, it is possible to further prevent leakage.

  As described above in detail, according to the present invention, it is possible to provide an auxiliary pad for absorption that has both a function for simple absorption and a function for reinforcement of absorption capacity.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the present invention, the “longitudinal direction” means a direction connecting the front side and the rear side of the absorption auxiliary pad 1, and the “width direction” is a direction orthogonal to the longitudinal direction (left and right when the absorption auxiliary pad is deployed). Direction).

  FIG. 1 is a partially broken development view of an auxiliary pad 1 for absorption according to the present invention, FIG. 2 is a rear view thereof, and FIG. 3 is a view taken along line III-III in FIG. In addition, the adhesion site | part is displayed by x mark in the required site | part of drawing.

  1 to 3, the auxiliary pad for absorption 1 is made of cotton-like pulp or the like, has a certain degree of rigidity, for example, an hourglass shape (or rectangular shape), and the absorbent body 4 surrounded by the encapsulating sheet 5. A liquid-permeable surface sheet 3 made of an effective or non-porous nonwoven fabric, a perforated plastic sheet, or the like disposed so as to cover the surface side (skin contact surface side) of the absorbent body 4; A liquid-permeable back sheet 2 made of the same material as the liquid-permeable top sheet 3 and an impermeable material disposed on the outer surface side of the back sheet and fixed at the outer peripheral portion. It is mainly composed of a liquid-proof or liquid-impervious leak-proof sheet 6.

  The absorption leak-proof sheet 6 has a planar shape substantially the same as the back sheet 2 and has a fixed end 6A whose outer peripheral part is joined by a joining means such as an adhesive such as heat seal or hot melt. In the width direction center part of the auxiliary pad 1 for absorption, it can be separated along the longitudinal direction.

In the following, each configuration will be specifically described in detail.
The absorbent body 4 is composed of, for example, a fiber aggregate such as cotton pulp and a high absorbent material such as a super absorbent polymer. In the illustrated example, the absorbent body 4 has constricted portions on both sides in order to soften the contact with the legs. A substantially hourglass-shaped thing is used, and the width dimension is a dimension width which does not give the wearer a feeling of gore by hitting the crotch part. The planar shape of the absorber 4 can be a rectangular shape. The absorber 4 is preferably a basis weight of about 50~600g / ^{m 2,} about 300 to 500 g / ^{m 2} is more preferable.

  Examples of the superabsorbent polymer include cross-linked polyacrylate, self-crosslinked polyacrylate, saponified acrylate-vinyl acetate copolymer cross-linked, isobutylene / maleic anhydride copolymer cross-linked, Examples include cross-linked polysulfonates, and partially cross-linked water-swellable polymers such as polyethylene oxide and polyacrylamide. Among these, those based on acrylic acid or acrylate that are excellent in water absorption and water absorption speed are preferred. In the production process, the superabsorbent polymer having the water absorption capability can adjust the water absorption (absorption capacity) and the water absorption speed by adjusting the crosslink density and the crosslink density gradient. The content ratio of the superabsorbent polymer in the absorbent body 4 is suitably about 30 to 70%, but is not limited thereto.

The absorber 4 is surrounded by the encapsulating sheet 5. As the encapsulating sheet 5, a paper material such as tissue or a liquid-permeable sheet such as a nonwoven fabric can be used. The thickness is preferably about 0.05 to 0.5 mm, more preferably about 0.05 to 0.2 mm. The basis weight is preferably about 5 to 25 g / ^{m 2,} about 5 to 15 g / ^{m 2} is more preferable. When using a non-woven fabric, a non-woven fabric processed by a spunbond method or an SMS method, particularly a non-woven fabric processed by an SMS method, is preferred because of its excellent balance between thinness and strength.

As the liquid-permeable surface sheet 3 covering the surface side (skin contact surface side) of the absorbent body 4, a porous or non-porous nonwoven fabric, a porous plastic sheet, or the like is preferably used. The material fibers that make up the nonwoven fabric can be synthetic fibers such as olefins such as polyethylene or polypropylene, polyesters, and polyamides, recycled fibers such as rayon and cupra, and natural fibers such as cotton. A nonwoven fabric obtained by an appropriate processing method such as a spun bond method, an SMS method, a thermal bond method, an air through method, a point bond method, a melt blown method, or a needle punch method can be used. In particular, the nonwoven fabric processed by the spunbond method or the SMS method is suitable in that it has a good balance between thinness and strength, and the nonwoven fabric processed by the air-through method is quick to absorb and excellent in dry touch even at a low basis weight. Therefore, it is preferable. These may be a sheet made of two or more layers in a sheet composed of a single layer (the same type or plural types) but, as the basis weight of the total, preferably from 10 to 40 g / ^{m 2,} more preferably 10~22g / ^{m 2} 10 to 15 g / m ² is particularly preferable. The thickness is preferably 1 mm or less, more preferably 0.5 mm or less, and particularly preferably 0.3 mm or less. When a large number of through holes are formed in the top sheet 3, urine and the like are quickly absorbed, and the dry touch properties are excellent. The topsheet 3 extends from the side edge of the absorber 4 to the side.

  As the liquid-permeable back sheet 2 that covers the back surface side (outer surface side) of the absorbent body 4, a porous or non-porous nonwoven fabric or a porous plastic sheet is preferably used in the same manner as the top sheet 3. The back sheet 2 also extends from the side edge of the absorber 4 to the same range as the side sheet 3 on the side. In the illustrated example, the top sheet 3 and the back sheet 2 are formed of separate sheet materials, and the front and back surfaces of the absorber 4 are respectively covered. However, the top sheet 3 and the back sheet 2 are integrated. The absorber 4 may be wound or encapsulated by a material.

(About leak-proof sheet 6)
Hereinafter, the leak-proof sheet 6 will be described in more detail.
As described above, the leak-proof sheet 6 is made of a liquid-impervious or hardly liquid-permeable sheet material. As shown in the drawing, the waterproof film 7 and the water-repellent nonwoven fabric 8 are hot-melted or the like. It is preferable to make a laminate that is liquid-impermeable by bonding with an adhesive. In the case of such a laminated body, the water-repellent nonwoven fabric 8 is formed by a known technique such as a slit or a perforation along the position where it can be separated in order to facilitate the division of the leak-proof sheet 6. It is preferable that the water-repellent nonwoven fabric 8 is intermittently formed along a position where it can be separated, and a band-shaped region composed of only the waterproof film 7 is formed. As shown in FIG. 2, the width S of the band-like region (intermittent width S of the water-repellent nonwoven fabric 8) is preferably 10 mm or less, and more preferably 5 mm or less. In the usage mode in which the liquid-permeable surface sheet surface is attached as the skin surface side without separating the leak-proof sheet 6 at the center in the width direction, when importance is attached to daytime light incontinence (a large amount of urination is not assumed) The waterproof film 7 is not necessarily required, and only the water-repellent nonwoven fabric 8 can be used. In this case, the water-repellent nonwoven fabric 8 can be divided by slits or perforations. In addition, when setting it as the laminated body of the waterproof film 7 and the water-repellent nonwoven fabric 8, you may make the whole surface into 2 layer structure, without providing the said strip | belt-shaped area | region. Moreover, when joining the waterproof film 7 and the water-repellent nonwoven fabric 8 and forming the leak-proof sheet 6, a pair of the longitudinal direction is used by using an adhesive or a fusion means along both sides of the position where separation is possible. Providing a linear joint makes it easy to separate the leak-proof sheet 6 in the longitudinal direction along the region between the linear joints. The pair of linear joints are preferably provided with a distance of about 5 to 10 mm in the width direction. Moreover, since it is preferable that it is a continuous linear form in a longitudinal direction, in the case of an adhesive agent, it is preferable to provide a linear junction by bead coating or slot coating. The linear joint is preferably provided over the entire length in the longitudinal direction, but can be omitted at the front and rear ends.

As the waterproof film 7, a liquid-impervious plastic sheet such as polyethylene or polypropylene is used. After forming a sheet by melting and kneading an inorganic filler in a polyethylene resin, the waterproof film 7 is stretched uniaxially or biaxially. The resulting microporous sheet is particularly suitable. Such a microporous sheet is water-permeable and moisture-permeable. If the sheet thickness is the same, the rigidity is lower than that of the non-porous sheet, and this is superior in terms of flexibility. For moisture permeability, specifically, the moisture permeability measured according to JIS Z0208 is 3000 to 12000 g / m ² · 24 hr, preferably 6000 to 12000 g / m ² · 24 hr, more preferably 8000 to 12000 g / m ^2.・ It is desirable to be around 24 hours. When such a microporous sheet is used, it is easier to tear compared to other waterproof materials such as a non-porous sheet and a water-repellent nonwoven fabric, so that the center in the width direction of the leak-proof sheet 6 described later can be separated. It is not always necessary to provide specific means for doing this. (Of course, in order to further facilitate the separation, “specific means” described later may be combined.)

On the other hand, the water-repellent nonwoven fabric 8 is made of an appropriate material such as a water-repellent sheet having a water-repellent material such as polyfluorinated ethylene, polyurethane, or polyethylene, or a coating such as a silicon-based, paraffin-based, or alkylchromic chloride-based water repellent. What has water repellency, such as a nonwoven fabric material subjected to water repellency treatment, is appropriately used. As a processing method, a nonwoven fabric obtained by an appropriate method such as a spunbond method, an SMS method, a melt blown method, a thermal bond method, an air-through method, a point bond method, a needle punch method, etc. can be used. In order to prevent this stuffiness, it is preferable to use a non-woven fabric that suppresses basis weight and has excellent air permeability. Specifically, the non-woven fabric processing method is suitable by the spunbond method or the SMS method in terms of excellent balance between thinness and strength, and the basis weight is preferably 8 to 30 g / m ² , and 10 to 22 g. / M ² is more preferable, and 10 to 15 g / m ² is particularly preferable. The thickness is preferably 0.5 mm or less, more preferably 0.3 mm or less, and particularly preferably 0.2 mm or less.

  In the leak-proof sheet 6, elastic elastic members 9 are arranged in an extended state along the longitudinal direction of the absorption auxiliary pad 1 on both sides of the position where separation is possible. The elastic expansion / contraction member 9 is preferably disposed with a tension (extension rate) of 150 to 220%. By disposing the elastic elastic member 9 in an extended state, in the above-described usage mode in which a three-dimensional gather is formed on both side portions on the surface side, an elastic force acts on the tip of the gather, and the standing state of the three-dimensional gather is improved. Will be able to hold. Further, in the usage mode in which the surface sheet surface is attached as the skin surface side without separating the leak-proof sheet 6 at the center portion in the width direction, the elastic elastic member extends along the longitudinal direction at the center portion in the width direction of the auxiliary pad 1 for absorption. 9 is disposed, the contraction action of the elastic expansion / contraction member 9 makes it easy for the central portion in the width direction of the auxiliary pad 1 for absorption to be in close contact with the body, so that leakage of urine and the like can be effectively prevented. become.

  Further, in the illustrated example, in order to improve the adhesion of the absorbent auxiliary pad 1 around the legs, the flaps on both sides of the auxiliary pad 1 (portions where the absorber 4 is not interposed) are respectively arranged in the longitudinal direction of the auxiliary pad 1. The elastic elastic member 10 is disposed along the stretched state. When such elastic elastic members 10 are provided on both sides, the auxiliary pad 1 for absorption is used in the usage mode in which the surface sheet surface is mounted on the skin surface side without separating the leak-proof sheet 6 at the center in the width direction. Both side portions in the width direction of the can easily adhere to the body, and leakage of urine and the like can be effectively prevented.

  As the elastic elastic members 9 and 10, materials such as styrene rubber, olefin rubber, urethane rubber, ester rubber, polyurethane, polyethylene, polystyrene, styrene butadiene, silicon, polyester, etc., which are usually used can be used. . Further, in order to make it difficult to see from the outside, the thickness is preferably set to 940 dtex or less. Instead of the thread-like elastic elastic member, a tape-like elastic elastic member having a certain width may be used.

  Next, the usage mode of the absorption auxiliary pad 1 will be described with reference to FIGS. The absorbent auxiliary pad 1 has two usage modes depending on the mode of the leak-proof sheet 6. As shown in FIG. 3, the first usage mode is a usage mode in which the surface of the liquid-permeable surface sheet 3 is mounted on the skin surface side without separating the leak-proof sheet 6 at the center in the width direction. . It functions as a simple absorption auxiliary pad that is used by replacing only the absorption auxiliary pad 1 that has absorbed body fluid, for the purpose of reducing economic burden and absorbing light incontinence when wearing cloth underwear. This is a usage mode when the This usage mode for simple absorption is particularly effective when the auxiliary pad 1 can be frequently replaced, such as in the daytime. In this case, as shown in FIG. 3, since the leak-proof sheet 6 is arranged on the outer surface side of the absorbent body 4, there is no possibility that the body fluid absorbed by the absorbent body 4 leaks to the outer surface, and used paper diapers and underwear And so on. By wearing this simple absorption auxiliary pad 1, in the case of a small amount of urine leakage, it is only necessary to replace this absorption auxiliary pad 1, which is more economical and labor-intensive than replacing a disposable diaper. The burden can be reduced.

  In the second usage mode, as shown in FIG. 4, the leak-proof sheet 6 is cut off at the center in the width direction and the leak-proof sheet 6 portions on the left and right sides are turned over to the liquid-permeable surface sheet 3 side. It is a use aspect which mounts | wears with the surface of the said liquid-permeable surface sheet 3 as a skin surface side. This is a usage mode in the case of functioning as an auxiliary pad for reinforcing absorbent capacity used by laminating on the surface side of absorbent articles such as paper diapers for the purpose of supplementing the absorbent capacity of absorbent articles such as paper diapers. This mode of use for reinforcing the absorption capacity is particularly effective when the absorbent article such as a disposable diaper cannot be replaced for a long time, such as at bedtime. Specifically, after separating the leak-proof sheet 6 in the state shown in FIG. 3 at the center in the width direction, the leak-proof sheet 6 on the left and right sides is separated from the cut-out part with the outer peripheral fixed end 6A as the base end. Fold back to the top sheet 3 side. Thereby, a three-dimensional gather standing on both sides of the top sheet 3 is formed. In this state, by attaching the absorbent auxiliary pad 1 to an absorbent article such as a paper diaper, the outer surface side of the absorbent body 4 becomes impermeable to liquid, so that the urine absorbed by the auxiliary pad 1 absorbs the paper diaper or the like. It becomes easy to transfer to articles | goods, and it becomes possible to supplement the absorption capability of absorbent articles, such as a paper diaper. In addition, the leakproof sheet 6 forms a liquid-impervious or hardly liquid-permeable three-dimensional gather on both sides of the surface sheet 3, so that leakage is effectively prevented even if a large amount of urine is released. it can.

  Next, specific means for making the central portion in the width direction of the leak-proof sheet 6 detachable (easy to detach) will be described. As a 1st form, as shown in FIG. 2, the perforation 20 which can be teared along a longitudinal direction in the width direction center part of the auxiliary pad 1 for absorption is formed with respect to the leak-proof sheet 6. As shown in FIG. . In the illustrated form, the respective regions on both sides of the perforation 20 are composed of only the waterproof film 7 with the water-repellent nonwoven fabric 8 intermittently to facilitate tearing from the perforation 20. You may form a slit or a perforation (linear weakening area | region formed by well-known techniques, such as) in the said water-repellent nonwoven fabric 8 along the perforation 20.

  As a 2nd form, as FIG. 5 shows, with respect to the leak-proof sheet 6, it makes it separable by arrange | positioning the hard film 21 which can be teared in strip shape along a longitudinal direction in the width direction center part. be able to. In this embodiment, the hard film 21 is peeled off from one end in the longitudinal direction to be removed, thereby forming a leak-proof sheet portion divided on both sides. As the hard film 21, a film material made of polypropylene, polyester, or the like and having a higher tensile strength than the waterproof film 7 is used. The hard film 21 is preferably formed with a width of 2 to 10 mm so that it can be easily peeled off. Also in this embodiment, similarly to the first embodiment, at least the respective regions on both sides where the hard film 21 is disposed are constituted by the water-repellent nonwoven fabric 8 intermittently and only the waterproof film 7 (that is, It is desirable that the width S of the band-like region is the same as or wider than the width of the hard film.

  On the other hand, as a 3rd form, as shown in FIG. 6, the said leak-proof sheet 6 is previously cut | disconnected along the longitudinal direction in the width direction center part, and the slit is formed, In the said width direction center part, It can be made separable by joining the cutting edge part of the said leak-proof sheet 6 so that attachment or detachment is possible with respect to the joining means 22 fixed to the back sheet 2 side along the longitudinal direction. By providing the joining means 22, the leak-proof sheet 6 is cut in advance in a usage mode in which the liquid-permeable surface sheet surface is mounted as the skin surface side without separating the leak-proof sheet 6 at the center in the width direction. Even if it has, the leak-proof sheet 6 can be hold | maintained to the outer surface side of the back surface sheet 2, and the leak from a cut part can be prevented. Furthermore, even when the leak-proof sheet 6 can be divided, division during use is prevented. Further, the leakage-proof sheet 6 is cut off at the center in the width direction, and the liquid-permeable surface sheet surface is used as the skin surface side with the leakage-proof sheet portions on the left and right sides turned over to the liquid-permeable surface sheet 3 side. In the aspect, the joining means 22 can be used for preventing misalignment with an absorbent article such as a paper diaper, and the absorbent auxiliary pad 1 can be fixed to the absorbent article.

  The joining means 22 can also be used in combination with all the embodiments of the present invention, such as the means for enabling separation of the first and second embodiments.

  As the joining means 22, a mechanical hook male material, an adhesive or a self-adhesive adhesive may be used. In particular, when the joining means is used for preventing misalignment, it is preferable to use a male material or an adhesive of a mechanical hook. Here, when the leak-proof sheet 6 is composed of a laminate of the waterproof film 7 and the water-repellent nonwoven fabric 8, in order to securely join the leak-proof sheet 6 to the joining means 22, the joining means 22 is a mechanical hook. When a male material is used, the water-repellent nonwoven fabric 8 is arranged on the surface on the back sheet 2 side, and when the adhesive means is used as the joining means 22, the leakproof sheet 6 is applied to the contact surface of the leakage preventive sheet 6 when the bonding means 22 is made of a self-adhesive adhesive. A self-adhesive adhesive application surface is also provided on the surface.

  By the way, this absorption auxiliary pad 1 can add various functions. That is, as shown in FIG. 7, on the outer surface side of the leak-proof sheet 6 and at both ends in the longitudinal direction of the absorbent auxiliary pad 1, it is possible to provide means for preventing misalignment 25, 25 at the time of mounting. In the usage mode in which the liquid-permeable surface sheet surface is mounted on the skin surface side without separating the leak-proof sheet 6 at the central portion in the width direction, the shift preventing means 25 absorbs the auxiliary pad 1 for absorption such as a paper diaper. For fixing to articles and underwear. As shown in the illustrated example, when the slip prevention means 25, 25 are provided at both ends in the longitudinal direction of the absorption auxiliary pad 1, the leakage preventing sheet 6 is separated at the center in the width direction and the leakage preventing sheet portions on the left and right sides are separated. This is preferable because it does not affect the standing of the three-dimensional gather formed by turning over to the liquid-permeable surface sheet 3 side. Therefore, although not shown, the displacement preventing means 25, 25 may be provided on both sides in the longitudinal direction of the absorption auxiliary pad 1. As the misalignment stopping means 25, a mechanical hook male material or an adhesive using an adhesive can be used. In addition, when the slip prevention means 25 is the adhesive, it is desirable to cover it with a release paper that can be peeled off at the time of mounting.

  Furthermore, as shown in FIG. 8, a pair of left and right three-dimensional gathers 26, 26 standing on the surface side in the longitudinal direction can be provided on both sides of the surface sheet 3. In the illustrated example, the three-dimensional gather 26 is formed by integrally forming the top sheet 3 and the back sheet 2, and in the sheet material that winds the absorber 4, the sheet material is extended outward from both sides of the absorber 4. Although it is comprised by the said extended part turned up in the existing part, you may make it join a separate gather nonwoven fabric to the both sides of the absorber 4. FIG. Elastic extensible members 27 are arranged in the stretched state along the longitudinal direction of the absorbent auxiliary pad 1 inside the double folded portions at the front ends of the three-dimensional gathers 26, respectively. By arranging this three-dimensional gather 26, as shown in FIG. 8A, the liquid-permeable surface sheet surface is mounted on the skin surface side without separating the leak-proof sheet 6 at the center in the width direction. In the usage mode, since the three-dimensional gathers 26 and 26 are formed on both side portions on the surface side, the effect of preventing leakage of urine and the like is improved. Further, as shown in FIG. 8 (B), the liquid-permeable surface 6 in a state where the leakage-proof sheet 6 is cut off at the center in the width direction and the leakage-proof sheet portions on the left and right sides are turned over to the liquid-permeable surface sheet side. In the usage mode in which the seat surface is mounted on the skin surface side, double solid gathers are formed on both side portions on the surface side, so the effect of preventing leakage of urine and the like is further improved. In the usage mode in which the liquid-permeable surface sheet surface is mounted as the skin surface side without separating the leak-proof sheet 6 at the center in the width direction, the three-dimensional gather 26 is not necessarily used when light incontinence is important in the daytime. The elastic elastic members 10 on the flap portions on both sides are not necessary, and it is sufficient to provide a three-dimensional gather 26 when a large amount of urination is assumed.

It is a partially broken development view of the surface side of auxiliary pad 1 for absorption concerning the present invention. It is an expanded view of the outer surface side. It is the III-III arrow directional view of FIG. It is sectional drawing of the auxiliary pad 1 for absorption which shows another usage condition. It is an expanded view of the outer surface side of the auxiliary pad 1 for absorption which shows another example of a form. It is an expanded view of the outer surface side of the auxiliary pad 1 for absorption which shows another example of a form. It is an expanded view of the outer surface side of the auxiliary pad 1 for absorption which shows another example of a form. (A), (B) is sectional drawing of the auxiliary pad 1 for absorption which shows another example of a form.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Absorption auxiliary pad, 2 ... Liquid-permeable back sheet, 3 ... Liquid-permeable surface sheet, 4 ... Absorber, 5 ... Encapsulating sheet, 6 ... Leak-proof sheet, 7 ... Waterproof film, 8 ... Water-repellent nonwoven fabric , 9... Elastic elastic member, 20 Perforation, 21 Hard film, 22 Joining means

Claims (9)

Impervious or hardly liquid-permeable, with an absorbent body interposed between the liquid-permeable top sheet and the liquid-permeable back sheet, and fixed to the outer surface of the liquid-permeable back sheet at the outer periphery. An auxiliary pad for absorption in which a leak-proof sheet is disposed,
The leak-proof sheet is separable along the longitudinal direction at the central portion in the width direction, and the auxiliary pad for absorption is mounted with the liquid-permeable surface sheet surface as the skin surface side without being separated at the central portion in the width direction. The use of the liquid-permeable surface sheet is cut off at the center in the width direction and the left and right leakage-proof sheet portions are turned over to the liquid-permeable surface sheet. An auxiliary pad for absorption, characterized in that the use mode can be selected.   The auxiliary pad for absorption according to claim 1, wherein the leak-proof sheet comprises a laminate of a waterproof film and a water-repellent nonwoven fabric.   The auxiliary pad for absorption according to claim 1, wherein the leak-proof sheet is made of a water-repellent nonwoven fabric.   The auxiliary pad for absorption according to any one of claims 1 to 3, wherein elastic leaky members are arranged along the longitudinal direction on both sides of the position where the leakage preventing sheet can be separated.   The auxiliary pad for absorption according to any one of claims 1 to 4, wherein the leak-proof sheet is separable by forming a perforation that can be torn along the longitudinal direction at a central portion in the width direction.   The auxiliary pad for absorption according to any one of claims 1 to 4, wherein the leak-proof sheet is separable by disposing a hard film that can be torn in a strip shape along the longitudinal direction at a central portion in the width direction. .   The leak-proof sheet is pre-cut along the longitudinal direction at the center in the width direction, and the leak-proof sheet is bonded to the joining means fixed to the back sheet side along the longitudinal direction at the center in the width direction. The auxiliary pad for absorption according to any one of claims 1 to 4, wherein the cutting edge portion of the sheet is detachably joined so as to be detachable.   The auxiliary pad for absorption according to any one of claims 1 to 7, wherein means for preventing misalignment at the time of mounting is disposed on both outer ends of the leak-proof sheet and in the longitudinal direction.   The absorption auxiliary pad according to any one of claims 1 to 8, wherein a pair of left and right three-dimensional gathers standing on the surface side in the longitudinal direction is provided on both side portions of the surface sheet.

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