WO2007037491A1

WO2007037491A1 - Body fluid-absorbing sheet directly applied to the skin

Info

Publication number: WO2007037491A1
Application number: PCT/JP2006/319735
Authority: WO
Inventors: Hiroko Yano; Keisuke Suzukawa
Original assignee: Kobayashi Pharmaceutical Co., Ltd.
Priority date: 2005-09-30
Filing date: 2006-10-02
Publication date: 2007-04-05
Also published as: JP5008293B2; JP2007092253A

Abstract

[PROBLEMS] To provide a body fluid-absorbing sheet having excellent body fluid-absorption properties and application properties which can absorb a body fluid originating in a part, from which the body fluid is secreted and discharged in a large amount and/or over a wide range, when directly applied to the skin. [MEANS FOR SOLVING PROBLEMS] A body fluid-absorbing sheet (10). Namely, a body fluid-absorbing sheet (10) which is to be directly applied to the skin and absorbs a body fluid, comprising a body fluid-absorption layer (11) having water absorptivity and a pressure-sensitive adhesive layer (12) located at least one side of the body fluid-absorption layer (11) to be in contact with the skin.

Description

Specification

Body fluid absorption sheet to be applied directly to the skin

Technical field

The present invention relates to a bodily fluid absorbing sheet that absorbs bodily fluids such as sweat and menstrual blood, and more particularly to a bodily fluid absorbing sheet that can be directly applied to the skin.

Background art

[0002] Since a person's side is a part that easily sweats, a side part of the clothes is likely to have sweat spots or the like. In order to prevent such sweat spots and the like, sweat removing pads to be applied to clothes have been known so far. However, this type of sweat pad cannot handle all clothes with different designs, so depending on the design, it may not be able to withstand the movement of the clothes, causing misalignment, or the distance from the side to the sweat pad is long. All the sweat could not be absorbed by the sweat pad, and sweat sweat could not be reliably prevented. As a solution to this problem, there is a sweat removing pad that absorbs sweat by occupying the skin directly on the skin (for example, Patent Document 1).

As shown in FIG. 9, the sweat pad 100 includes a sheet base material 106, an adhesive layer 104 provided on the entire surface of the sheet base material 106, and a water absorption pad provided at the center position of the adhesive layer 104. 101 and a leak stopper 108 provided at the peripheral edge of the water absorbing pad 101. The adhesive layer 104 protrudes from the periphery of the water absorbing pad 101, and the exposed portion 102 is constituted by the protruding portion. This sweat pad 100 has problems such as streaks and misalignment caused by differences in clothing design, sweat stains on clothing, etc., by using the exposed pad 102 on the skin and attaching the water absorbing pad 101 to the armpit. Could be solved.

Patent Document 1: JP 2004-68236 A

Disclosure of the invention

Problems to be solved by the invention

[0004] In this sweat pad 100, the exposed pad 102 that protrudes from the periphery of the water absorbing pad 101 and the water absorbing pad 101 for covering the water absorbing pad 101 with the sheet base material 106 and adhering it to the skin. A leak stopper 108 is required to prevent the side sweat from leaking to the adhesive layer 104 side.

Therefore, (1) the exposed portion 102, that is, the contact surface of the adhesive layer 104 mounted on the sweat gland Due to the large volume and the presence of the leak-proofing 108, most of the sweat on the adhesive layer 104 side does not flow to the water absorbing pad 101 side but exists between the skin and the adhesive layer 104. Therefore, for example, if you apply sweat to a place where there is a lot of sweat, such as a side or a wide area, and the back or hips, etc., the adhesive strength of the adhesive layer 104 will decrease and the sweat pad 100 will fall off during use. was there.

[0006] (2) The exposed portion 102 has a large sticking area as a whole of the sweat pad 100 with respect to the size of the water absorbing pad 101, and the exposed portion 102 has no gap. Therefore, there are problems such as that the places where the sweat pad 100 can be applied are limited, the wearer feels uncomfortable, the intense movement of the joint cannot be followed satisfactorily, and misalignment occurs.

[0007] Further, (3) if the attachment area of the perspiration pad 100 is reduced, the water absorption pad 101 must be reduced accordingly, so that the amount of sweat absorbed is limited.

[0008] The present invention has been made to solve the above-described problem, and can be applied directly to the skin, for example, to absorb body fluid derived from a site that secretes and discharges body fluid in large amounts and / or extensively. Means for solving the problems aimed at providing a body fluid absorbing sheet having excellent body fluid absorbability and wearability

[0009] The object of the present invention is a bodily fluid absorption sheet that is attached to the skin and absorbs bodily fluid, and is provided on the side of the skin contact surface of the bodily fluid absorption layer having water absorption and the bodily fluid absorption layer. This is achieved by a bodily fluid absorption sheet provided with an adhesive layer.

[0010] Preferably, the pressure-sensitive adhesive layer is provided such that at least a part of the body fluid absorption layer on the skin contact surface side is exposed.

[0011] The pressure-sensitive adhesive layer preferably includes a plurality of pressure-sensitive adhesive portions arranged in a dot shape.

[0012] The pressure-sensitive adhesive layer is preferably made of an HLB type double phase acrylic pressure-sensitive adhesive.

[0013] The body fluid absorbing layer is preferably composed of an aggregate obtained by mixing natural fibers and synthetic fibers and heat-treating them at a temperature 10 to 50 degrees higher than the softening point of the synthetic fibers. Les. Moreover, it is preferable that each said bodily fluid absorption sheet | seat is provided with the surface layer which has a bodily fluid permeability | transmittance in at least one part on the surface of the said bodily fluid absorption layer.

[0014] The surface layer is preferably interposed between the body fluid absorbing layer and the pressure-sensitive adhesive layer.

Moreover, it is preferable that each said bodily fluid absorption sheet is equipped with the waterproof film layer which has a bodily fluid impermeability in at least one part on the surface of the said bodily fluid absorption layer.

[0015] Further, a sweat-repellent sheet comprising the above body fluid absorbing sheets is preferable.

[0016] Further, a side sweating sheet made of each of the body fluid absorbing sheets is preferable.

The invention's effect

[0017] According to the bodily fluid absorption sheet of the present invention, it can be applied directly to the skin, for example, excellent bodily fluid absorption and wearing that can absorb bodily fluids derived from a location that secretes and discharges bodily fluids in large amounts and / or extensively. Can demonstrate its sexuality.

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a plan view of a bodily fluid absorbing sheet 10 according to an embodiment of the present invention, and FIG.

FIG.

As shown in FIGS. 1 and 2, the body fluid absorbing sheet 10 includes a body fluid absorbing layer 11 that absorbs body fluid and an adhesive layer 12 provided on the skin contact surface side of the body fluid absorbing layer 11. , Ru The pressure-sensitive adhesive layer 12 is covered with release paper (not shown), and the pressure-sensitive adhesive layer 12 is exposed by peeling the release paper when the body fluid absorbing sheet 10 is used.

[0020] Here, the "skin contact surface side" in the present specification refers to the surface side where the sheet and the skin come into contact when the body fluid absorbing sheet is used. For example, in the present embodiment shown in FIG. 3, when the body fluid absorbing sheet 10 is used, the surface side where the sheet 10 and the skin a come into contact is at least the adhesive material layer 12 above the body fluid absorbing sheet 10. The surface side where is equipped.

[0021] The shape, size, and thickness of the body fluid absorbing layer 11 can be changed as appropriate, and can be various shapes such as a circle, an ellipse, a rectangle, a square, a bowl, and a triangle.

[0022] The body fluid absorbing layer 11 is not particularly limited as long as it has water absorbency. For example, the body fluid absorbent layer 11 used for sanitary napkins, diapers, sweat-removing pads, and cage sheets is used. A known absorbent material such as a water-absorbing polymer, a fiber structure composed of a woven fabric, a knitted fabric, a non-woven fabric or a pulp product can be used. Among them, it is preferable to use an aggregate (for example, a nonwoven fabric) made of natural fibers and synthetic fibers from the viewpoint that the texture is good, the body fluid absorbability is excellent, and the material is not dropped from the body fluid absorbing layer 11. Natural fibers include cotton, silk, pulp, wool and hemp. Among these natural fibers, cellulosic fibers such as cotton and pulp are preferable from the viewpoint that contact dermatitis such as allergy is unlikely to occur and the body fluid absorbs easily. Synthetic fibers include nylon fiber, polyethylene fiber, polyester fiber, polyamide fiber, acrylic fiber, polybulal alcohol fiber, polypropylene fiber, polyethylene terephthalate fiber, ethylene acetate bull fiber, urethane fiber, and acrylic fiber. It is. Further, semi-synthetic fibers such as rayon fiber, acetate fiber, and cuvula, and various fiber blends and blends can also be used. Of these, synthetic fibers such as ethylene acetate bull fiber, polypropylene fiber, polyethylene fiber, polyester fiber, and polyethylene terephthalate fiber, or composite fibers thereof are preferable from the viewpoint of dry feeling, texture, and heat sealability. Examples of the composite fiber include a polyethylene / polyester composite fiber, a polyethylene / polypropylene composite fiber, an ethylene acetate butyl / polypropylene composite fiber, and the like, and a polyethylene / polypropylene composite fiber is more preferable from the viewpoint of excellent elastic recovery function. Furthermore, as polyethylene / polypropylene composite fiber, a core made of polypropylene fiber whose outer periphery is covered with polyethylene is more preferable because the core polypropylene fiber can exhibit an excellent elastic recovery function when used. That's right.

[0023] The aggregate is preferably a blend of natural fibers and synthetic fibers in a weight ratio of 3: 7 to 7: 3. Thereby, the body fluid absorption layer 11 having excellent resistance to bending and fluid fluid absorption can be obtained. Furthermore, what mix | blended natural fiber and synthetic fiber in the ratio of 4: 6-6: 4 by weight ratio is more preferable. As a result, the bodily fluid absorption layer 11 is excellent in bodily fluid absorption, can prevent the natural fibers from falling off from the bodily fluid absorption layer 11, and has a soft feel and excellent usability.

[0024] Further, a more preferable aggregate is a mixture of natural fibers and synthetic fibers in the above-mentioned blending ratio, The heat treatment is preferably performed at a temperature 10 to 50 ° C higher than the soft spot of the synthetic fiber, more preferably 20 to 40 ° C. For example, when a polyethylene / polypropylene composite fiber is used as the synthetic fiber, it is preferably heat-treated at 120 to 160 ° C, more preferably 130 to 150 ° C. As a result, since the synthetic fibers are appropriately melted and entangled with the natural fibers, it is possible to obtain an excellent body fluid absorbability, a smooth touch, and the body fluid absorbing layer 11 from which the natural fibers do not fall off. Furthermore, if the thickness of the synthetic fiber is less than 1.0 decitex, the natural fiber cannot be satisfactorily intertwined with the natural fiber, and the natural fiber tends to fall off from the body fluid absorbing layer 11, and 5.0 decitex. Exceeding the above value tends to cause the body fluid absorption layer 11 to become hard and stiff and inferior in wearability. Therefore, the thickness of the synthetic fiber is preferably 1.0 to 5.0 decitex, and more preferably 2.0 to 3.5 decitex.

[0025] The weight of the aggregate constituting the body fluid absorption layer 11 is preferably set to 20 to 150 g / m ² in consideration of the balance between the water retention amount and the uncomfortable feeling on the skin 40 to: More preferably, it is set to 120 g / m ² .

[0026] The pressure-sensitive adhesive layer 12 is provided on the skin contact surface as long as the body fluid absorption layer 11 can absorb force fluid provided so that at least a part of the body fluid absorption layer 11 on the skin contact surface side is exposed. The area ratio of the pressure-sensitive adhesive layer 12 is not particularly limited. In this embodiment, the pressure-sensitive adhesive layer 12 is composed of a plurality of pressure-sensitive adhesive portions 13 provided with a gap. Such a gap is preferable in that the body fluid does not enter between the skin and the adhesive portion 13 and the body fluid absorbing layer 11 can efficiently absorb the body fluid. Specific force S of the exposed area (for example, the area of the gap between the adhesive parts 13) of the body fluid absorbing layer 11 to the unexposed area (for example, the installation area of the adhesive part 13), If the ratio is less than 0.1, the body fluid cannot be sufficiently absorbed by the body fluid absorbing layer 11, and the body fluid tends to enter between the skin and the adhesive portion 13 and easily fall off during use. If it exceeds 0.9, it tends to be difficult to adhere to the skin. Therefore, the area ratio is preferably 0.:! To 0.9, more preferably 0.2 to 0.8, and still more preferably 0.4 to 0.7. .

[0027] The pressure-sensitive adhesive layer 12 is formed from a single or a plurality of pressure-sensitive adhesive portions 13 arranged in various shapes such as a dot shape, an annular shape, a triangular shape, a rectangular shape, a square shape, a rod shape, and a spiral shape. Constitution The size and shape of the adhesive portion 13 are not particularly limited. In particular, it is preferable to arrange the adhesive layer 12 in a dot shape with the plurality of adhesive portions 13 as in this embodiment because at least a part of the body fluid absorbing layer 11 on the skin contact surface side is exposed. More preferably, the body fluid absorption layer 11 is evenly distributed over the entire skin contact surface side. As a result, the bodily fluid enters between the skin and the adhesive portion 13, and not only the side surface of the bodily fluid absorption layer 11 but also the skin contact surface side, even bodily fluids flowing from the direction of misalignment, the bodily fluid absorption layer 11 Can be absorbed efficiently. Further, since the body fluid enters between the adhesive portions 13, it is possible to effectively prevent the body fluid absorbing sheet 10 from falling off. Furthermore, it can be easily peeled off from the skin after use without any stress.

[0028] The material of the pressure-sensitive adhesive layer 12 is not particularly limited as long as it can be applied to the skin. For example, water-soluble adhesives such as acrylic water-soluble adhesives, rubber-based hot menolates, Examples include water-insoluble adhesives such as olefin-based hot melts, and HLB-type double-phase acrylic pressure-sensitive adhesives (manufactured by K & I Medical Research). In addition, the adhesive layer 12 is preferably an HLB type because it is excellent in followability to the skin and has little irritation to the skin among the above-mentioned adhesives that can be peeled off without irritating the skin after use. A double phase acrylic pressure-sensitive adhesive (manufactured by K & I Medical Research) is preferred.

[0029] The adhesive strength of the pressure-sensitive adhesive layer 12 is a strength that can withstand practical use, that is, the tack strength is preferably 5 Ogf or more, more preferably 80 to 220 gf, and even more preferably 100 to 200 gf. Further, the peel force, which is the strength when the adhesive is peeled off, is preferably 70 gf or more, more preferably 80 to 25 Ogf, and more preferably 100 to 200 gf force S. The preferred peel strength was obtained by applying an adhesive to the test piece prepared by cutting out the material used for the body fluid absorbing sheet 10, and bonding it to the attached cotton white cloth (Kanakin No. 3) for JIS dyeing firmness test. Thereafter, the determination is made based on the value obtained by measuring the adhesive strength by pulling the test piece in the direction perpendicular to the adhered surface. Specifically, after pasting the test piece (60mm x 120mm) onto a 60mm x 120mm J IS dyeing fastness test cotton white cloth (Kanakin No. 3), a 35gZcm ² load was applied for 30 seconds and the load was removed. Leave it for 1 to 2 hours in an environment with a temperature of 35 to 40 ° C and a humidity of 75%, and then leave it for another 30 minutes in an environment with a temperature of 20 ° C and a humidity of 50%. Furthermore, a part of the test piece is slightly peeled off, and 300% with a tensile tester (AGS-H, manufactured by Shimadzu Corporation). Judgment is based on the peel force when pulled at a speed of mm / min (specimen width 60 mm, peel direction 120 mm).

[0030] According to the body fluid absorbing sheet 10 configured as described above, the body fluid absorbing sheet 10 is directly adhered to, for example, the skin of the armpits or the like by the adhesive layer 12, so that the body fluid such as sweat is removed from the body fluid. It can be absorbed into the body fluid absorbing layer 11 through a part of the surface of the absorbing layer 11 where the adhesive part 13 is not provided, for example, a gap between the adhesive parts 13, a side surface of the body fluid absorbing layer 11, and the like. As a result, the body fluid can be efficiently absorbed by the body fluid absorbing layer 11 and the amount of the body fluid existing between the adhesive layer 12 and the skin can be reduced, so that the body fluid absorbing sheet 10 can be used. It is possible to effectively prevent the dropout and misalignment of the inside, that is, the excellent fluid absorption and stickiness of the fluid absorption sheet 10 can be maintained. In particular, in areas where there is a large amount of sweat, such as in the sides, and areas where the area of the back, hips, etc. is large, in addition to excellent fluid absorption, strong adhesive strength is required to prevent the fluid absorption sheet 10 from falling off. Therefore, it is particularly effective in such a case.

[0031] Also, according to the bodily fluid absorbing sheet 10, as shown in FIG. 4, when sweat on the side is targeted, for example, the two arms and torso, etc. By adhering the body fluid absorbing sheet 10 to the skin on one side (for example, the second arm side), the sweat flowing on the other side (for example, the trunk side) that touches only with the sweat flowing on one side is also absorbed. Therefore, excellent body fluid absorbability can be obtained over a wide range. Also, in this case, even if the side part is very sweaty, the upper arm or torso has little sweating amount. If the body fluid absorbing sheet 10 is attached to the area, the sweat that flows will be absorbed. It is preferable in that it can be effectively absorbed by the side surface of the layer 11 and the body fluid absorbing sheet 10 can be prevented from falling off due to sweat. Furthermore, for example, the body fluid absorption sheet 10 is affixed while avoiding joints such as the side, so that the body fluid absorption sheet 10 may be displaced due to movement of the joints.

The sweat flowing from the joint can be efficiently absorbed without falling off.

[0032] Further, according to this bodily fluid absorption sheet 10, the adhesive layer 12 is provided on the skin contact surface side of the bodily fluid absorption layer 11, and the bodily fluid absorption sheet 10 as a whole with respect to the skin contact area of the bodily fluid absorption layer 11 is provided. Since the pasting area can be reduced, the area occupied by shellfish can be reduced while maintaining the amount of absorbed body fluid. As a result, various parts can be used without limiting the application. Since it can be used reasonably, excellent wearability can be obtained.

[0033] The pressure-sensitive adhesive layer 12 may be provided on at least one skin contact surface side of the body fluid absorption layer 11, and may be provided on a plurality of surfaces. In addition, the number of adhesive layers 12, the installation surface, and the installation area can be changed as appropriate.

For example, in the present embodiment, the pressure-sensitive adhesive layer 12 may be composed of a single pressure-sensitive adhesive portion 13 composed of a plurality of pressure-sensitive adhesive portions 13 provided at intervals. In this case, the part where the adhesive part 13 is installed may be a part or the whole of the body fluid absorption layer 11 on the skin contact surface side. Here, even when the adhesive part 13 is provided on the entire surface of the body fluid absorption layer 11 on the skin contact surface side, as described above, it is attached to a portion with a small amount of sweat such as the upper arm, so that the body fluid absorption layer 11 The body fluid can be absorbed from the opposite side of the skin contact surface side where the pressure-sensitive adhesive layer 12 is provided, the side surface of the body fluid absorbing layer 11, etc., and excellent body fluid absorbability and wearability can be obtained.

As described above, one embodiment of the present invention has been described in detail, but a specific aspect of the present invention is not limited to the above-described embodiment.

Further, as shown in FIG. 5, the body fluid absorbing sheet 10 further includes a surface layer 14 provided on at least a part of the body fluid absorbing layer 11.

In FIG. 5, the same components as those in FIG.

[0038] The surface layer 14 protects the body fluid absorbing layer 11 and makes soft contact with the skin. The surface layer 14 is not particularly limited as long as it has body fluid permeability, and a sheet-like or film-like fiber structure composed of a woven fabric, a knitted fabric, a nonwoven fabric, a pulp product, or the like can be used. Of these, non-woven fabrics are preferred from the viewpoint of texture (feel), skin irritation, and fluid absorption. The fibers constituting this fiber structure include natural fibers and synthetic fibers, and these can be used alone or in combination as a fiber structure having desired properties. Examples of natural fibers and synthetic fibers include the same fibers as those used as raw materials for the body fluid absorbing layer 11. These fiber structures are not particularly limited in shape, but if the surface has a mesh and / or embossed pattern, the contact area with the skin is reduced, and the feeling of adhesion when worn is reduced. The point that it is alleviated and sweat It is preferable from the viewpoint that the fluid permeability of the body fluid is improved and it becomes easy to reach the body fluid absorbing layer 11 even with a small amount of body fluid. Further, the embossing is preferably performed so that the recessed end portion of the recessed portion of the processed surface layer 14 is opened. When the mesh and / or the embossed pattern is not used, it is preferable in that the frictional force on the skin is reduced and itching and rash are less likely to occur. Whether or not to perform such processing or the like can be selected according to the use situation.

[0039] Nonwoven fabrics are wet papermaking, dry papermaking, spunbond, meltblown, latex resin bond, solvent bond, stitchbond, needle punch, spunlace, thermal bond, air-through, It can be produced by a method such as the airlaid method. Among these methods, the spunlace method, thermal bond method, air-through method, airlaid method, needle punch method, and spunbond method are preferred. The safety can be increased.

[0040] In addition, the basis weight of the fiber structure used for the surface layer 14 is preferably set to 10 to 60 g / m ² in consideration of the balance between the fluid permeability and the reduction of the uncomfortable feeling on the skin. ingredients 20 to 5 Og / m ² Rere more preferably be set to.

[0041] The surface layer 14 and the body fluid absorbing layer 11 are bonded with, for example, a water-soluble adhesive such as an acrylic water-soluble adhesive, or a water-insoluble adhesive such as a rubber-based hot melt or an olefin-based hot melt. The power to do S. Further, it is preferable that the adhesive can be bonded and fixed without peeling off the bonded surface during and after use of the body fluid absorbing sheet 10.

[0042] According to such a body fluid absorbing sheet 10, since the surface layer 14 is provided on the surface of the body fluid absorbing layer 11, the body fluid absorbing layer 11 can be protected and excellent wearability can be obtained. be able to. The surface layer 14 can keep the skin clean.

[0043] The surface layer 14 may be interposed between the body fluid absorbing layer 11 and the pressure-sensitive adhesive layer 12, as shown in FIG.

[0044] According to such a body fluid absorbing sheet 10, since the surface layer 14 is in gentle contact with the skin even on the surface provided with the pressure-sensitive adhesive layer 12, excellent wearability can be obtained.

[0045] In order to achieve the above-described effect, the surface layer 14 may be provided in a plurality of portions as long as it is provided in at least a part of the body fluid absorption layer 11. Further, the number of the surface layers 14, the installation surface, and the installation area can be changed as appropriate. [0046] The fiber structure of the surface layer 14 is preferably subjected to water repellent treatment. The water-repellent treatment can be performed only on one side of the fiber structure, but it is preferable that the water-repellent treatment is performed on both sides. According to the double-sided water repellent treatment, it is possible to prevent the penetration of body fluid into the fibers of the surface layer 14 and the lateral bleeding of the body fluid. As a result, the body fluid is efficiently transferred to the body fluid absorbing layer 11 through the pores of the fiber structure. Can be reached.

[0047] The water-repellent treatment may be performed by preparing a sheet-like fiber structure and then subjecting both surfaces of the structure to a water-repellent treatment. Any method for preparing a film may be employed.

[0048] Examples of the water-repellent treatment method include a method using a water-repellent treatment agent such as silicon oil, fluororesin, methylhydrogenpolysiloxane, or an oil agent containing these components. Preferably, the fiber is covered with a water-repellent treatment agent containing silicon oil, fluororesin, methyl hydrogen polysiloxane, or the like.

Further, as shown in FIG. 7, the body fluid absorbing sheet 10 further includes a waterproof film layer 15 provided on at least a part of the body fluid absorbing layer 11.

In FIG. 7, the same components as those in FIG. 2 are denoted by the same reference numerals, and the description thereof is omitted.

[0051] The waterproof film layer 15 prevents the body fluid absorbed by the body fluid absorbing layer 11 from flowing out to the outside, and is not particularly limited as long as it has body fluid impermeability. Polyethylene, polyester Polyvinyl alcohol, polypropylene, nylon, cellophane, vinylon, salted vinyl and the like can be used. The film obtained by uniaxially stretching these materials can reliably prevent the outflow of body fluids. The waterproof film layer 15 is made of such a material, which is preferable in terms of wearability, which prevents a large amount of body fluid from flowing out. In addition, a film obtained by kneading an inorganic substance such as calcium carbonate powder with these materials and then biaxially stretching can be made of a material that allows water vapor and air to permeate without allowing body fluid to permeate. By using the waterproof film layer 15 as such a material, it is possible to reduce discomfort due to stuffiness. The waterproof film layer 15 should be used or separated according to usage conditions.

[0052] Further, the thickness of the waterproof film layer 15 does not allow the absorbed body fluid to permeate and is different at the time of wearing. It is preferable to set to 10 to 50 μΐη because it is difficult to remember.

[0053] According to the body fluid absorbing sheet 10, since the waterproof film layer 15 is provided on the surface of the body fluid absorbing layer 11, leakage of the body fluid absorbed by the body fluid absorbing layer 11 can be prevented. This also makes it possible to comfortably use the body fluid absorbing sheet 10 that does not contaminate clothing.

[0054] The installation surface of the waterproof film layer 15 is appropriately changed according to the use situation, but is preferably a surface that can receive body fluid flowing in the direction of gravity. For example, when affixing to the side part, the surface of the body fluid absorbing layer 11 is preferably on the surface facing the surface on which the pressure-sensitive adhesive layer 12 is provided. In addition, when the body fluid absorbing sheet 10 is affixed to the second arm or torso side near the side as shown in FIG. 4, it is preferably on the side surface of the body fluid absorbing layer 11. As a result, the bodily fluid absorbed in the bodily fluid absorbing layer 11 can be prevented from flowing out in the direction of gravity.

[0055] In order to achieve the above-described effect, the waterproof film layer 15 may be provided in a plurality of portions as long as it is provided in at least a part of the body fluid absorption layer 11. Further, the number, the installation surface, and the installation area of the waterproof film layers 15 can be changed as appropriate.

[0056] The surface layer 14 and the waterproof film layer 15 can be used in combination. For example, in the body fluid absorbing layer 11, the surface layer 14 can be provided on the surface facing the surface on which the pressure-sensitive adhesive layer 12 is provided, and the waterproof film layer 15 can be provided on the side surface. Thereby, for example, as shown in FIG. 4, it is possible to obtain a body fluid-absorbing sheet 10 that is excellent in touch, body fluid absorbability, and wearability, particularly in a portion where the skin and the skin are in contact with each other.

[0057] Further, the waterproof film layer 15 may be provided so as to partition the body fluid absorbing layer 11, as shown in FIG.

[0058] According to such a body fluid absorbing sheet 10, since the body fluid absorbing layer 11 is cut off by the waterproof film layer 15, the body fluid absorbed on one side of the body fluid absorbing layer 11 permeates the other side. Can be prevented. For example, when the body fluid absorbing sheet 10 is used in a portion where the skin and skin contact, such as the upper arm and the torso, the body fluid absorbed from the skin on one side (for example, the second arm side) is the body fluid on the other side (for example, the torso side). Since it does not penetrate into the absorbent layer 11, it can absorb more body fluid. [0059] Further, in the body fluid absorbing sheet 10, the surface layer 14 can be used in combination, for example, the surface layer 14 is provided on the side surface of the body fluid absorbing layer 11. Thereby, the bodily fluid absorption sheet 10 excellent in touch, bodily fluid absorbability and wearability can be obtained. Further, a further waterproof fine layer can be provided on the side surface of the body fluid absorbing layer 11. As a result, leakage of bodily fluid absorbed in the bodily fluid absorbing layer 11 can be surely prevented, so that even better comfort can be achieved without contaminating clothing.

Furthermore, a deodorant (not shown) can be interposed between the body fluid absorbing layer 11 and the surface layer 14 or between the body fluid absorbing layer 11 and the waterproof film layer 15. This can reduce unpleasant odors emitted from body fluids such as sweat. In this case, a deodorant is preferably interposed between the body fluid absorbing layer 11 and the waterproof film layer 15. As a result, it is possible to prevent itching and rash by avoiding direct stimulation of the deodorant to the skin at the time of wearing.

[0061] The deodorant is, for example, a known mixer such as a rotary ball mill, a vibration ball mill, a planetary ball mill, and a sand mill, and a deodorant component such as zeolite and a lubricant such as magnesium stearate. It can be obtained by mixing an agent and a resin powder such as ethylene vinyl acetate polymer. The particle size of the deodorant is preferably set to about 5 / m or less in view of the deodorizing effect. Further, the blending ratio of the deodorant component with respect to the total amount of the deodorant is preferably 10 to 80% from the balance between the deodorizing effect and the industrial productivity.

[0062] In addition, a known fragrance component can be added to the body fluid absorbing sheet 10. This makes it possible to mask unpleasant odors emitted from body fluids such as sweat.

[0063] The bodily fluid absorbing sheet of the present invention can absorb bodily fluids such as sweat, menstrual blood, and vaginal discharge, and secretes and discharges bodily fluids such as the side, buttocks, back, neck, forehead, and vagina. It can be used by sticking it to or near the place.

Brief Description of Drawings

FIG. 1 is a plan view of a bodily fluid absorbing sheet according to an embodiment of the present invention.

2 is a side cross-sectional view of the body fluid absorbing sheet shown in FIG.

FIG. 3 is a diagram showing a contact state between a body fluid absorbing sheet and skin.

FIG. 4 is a view showing one use state of a body fluid absorbing sheet.

FIG. 5 is a side sectional view of a bodily fluid absorbing sheet according to another embodiment. 6] A side sectional view of a bodily fluid absorbing sheet according to still another embodiment. 7] A side cross-sectional view of a bodily fluid absorbing sheet according to still another embodiment. FIG. 8] is a side sectional view of a bodily fluid absorbing sheet according to still another embodiment. 9] A side sectional view of a conventional body fluid absorbing sheet.

Explanation of symbols

10 Body fluid absorption sheet

11 Fluid absorption layer

12 Adhesive layer

13 Adhesive part

14 Surface layer

15 Waterproof film layer

Claims

The scope of the claims

[1] A bodily fluid absorption sheet that is applied to the skin and absorbs bodily fluids,

A body fluid absorbing layer having water absorption;

A body fluid absorption sheet comprising: an adhesive layer provided on at least one skin contact surface side of the body fluid absorption layer.

[2] The body fluid absorbing sheet according to claim 1, wherein the pressure-sensitive adhesive layer is provided so that at least a part of the body fluid absorbing layer on the skin contact surface side is exposed.

[3] The bodily fluid absorption sheet according to claim 2, wherein the pressure-sensitive adhesive layer includes a plurality of pressure-sensitive adhesive portions arranged in a dot shape.

[4] The body fluid-absorbing sheet according to any one of claims 1 to 3, wherein the pressure-sensitive adhesive layer is made of an HLB-type double-phase acrylic pressure-sensitive adhesive.

[5] The bodily fluid absorbing layer is formed by mixing natural fiber and synthetic fiber and is 10 to 10

The body fluid absorbing sheet according to any one of claims 1 to 4, wherein the body fluid absorbing sheet comprises an aggregate obtained by heat treatment at a temperature that is 50 degrees higher.

[6] The bodily fluid absorption sheet according to any one of claims 1 to 5, wherein a surface layer having a humor permeability is provided on at least a part of the surface of the bodily fluid absorption layer.

7. The body fluid absorbing sheet according to claim 6, wherein the surface layer is interposed between the body fluid absorbing layer and the pressure-sensitive adhesive layer.

8. The body fluid absorbing sheet according to any one of claims 1 to 7, further comprising a waterproof film layer having body fluid impermeability on at least a part of the surface of the body fluid absorbing layer.

[9] A sweat removing sheet comprising the body fluid absorbing sheet according to any one of claims 1 to 8.

[10] A side sweat removing sheet comprising the body fluid absorbing sheet according to any one of claims 1 to 8.