JP2007092253A - Body fluid-absorbing sheet to be directly stuck to skin - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a body fluid-absorbing sheet having excellent body fluid absorbing properties and attachability of absorbing through directly sticking to the skin, at a large amount or widely, for instance, blood liquid derived from positions which secrete/discharge body fluid. <P>SOLUTION: This body fluid-absorbing sheet 10 which absorbs body fluid through sticking to the skin has a body fluid-absorbing layer 11 having absorbability, and an adhesive layer 12 set at least on one skin contact side of the body fluid-absorbing layer 11. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  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.

  Since people's side is easy to sweat, the side of clothing is likely to have sweat spots. In order to prevent this sweat spot or the like, a sweat pad to be applied to clothes has been known so far. However, with such a sweat pad, it is not possible to handle all garments with different designs, so depending on the design, it may not be able to withstand the movement of the clothes, causing twists and deviations, and because the distance from the side part to the sweat pad is long Sweat could not be absorbed by the sweat pad, and sweat spots could not be reliably prevented. As a solution to this problem, there is a sweat removing pad that is directly applied to the skin and absorbs sweat (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, a water absorption pad 101 provided at the center position of the adhesive layer 104, And a leak stopper 108 provided at the peripheral edge of the 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 removing pad 100 is used by sticking the exposed portion 102 to the skin and using the water absorbing pad 101 in close contact with the armpit, thereby preventing problems such as twisting and shifting caused by differences in clothing design and sweat stains on clothing. I was able to solve it.

JP 2004-68236 A

  However, in this sweat removing pad 100, the exposed portion 102 that protrudes from the peripheral edge of the water absorbing pad 101 and covers the water absorbing pad 101 with the sheet base material 106 and adheres to the skin, and the sweat on the water absorbing pad 101 side is exposed to the adhesive layer 104 side. In order to prevent leakage, a leak stopper 108 is required.

  Therefore, (1) since the contact area of the exposed layer 102, that is, the adhesive layer 104 mounted on the sweat gland is large, and the leak stopper 108 is provided, most of the sweat sweated on the adhesive layer 104 side Does not flow to the water absorption pad 101 side, and is present between the skin and the adhesive layer 104. During use, there was a problem that the adhesive strength of the adhesive layer 104 was reduced and the sweat pad 100 was dropped.

  Further, (2) the exposed portion 102 has a large attachment area as a whole of the sweat removing pad 100 with respect to the size of the water absorbing pad 101 and the exposed portion 102 has no gap (no play), so the sweat removing pad 100 is applied. There are problems such as limited places where it can be done, giving the wearer a sense of incongruity, and being unable to follow the intense movements of the joints satisfactorily.

  Furthermore, (3) if the area to which the perspiration pad 100 is attached is reduced, the water absorption pad 101 must be reduced accordingly, so that the amount of sweat absorbed is limited.

  The present invention has been made to solve the above-mentioned problems, and is excellent in body fluid that can be directly applied to the skin and absorb, for example, body fluid derived from a location that secretes and discharges body fluid in large amounts and / or extensively. An object of the present invention is to provide a body fluid absorbing sheet having absorbability and wearability.

  The object of the present invention is a bodily fluid absorbing sheet that is adhered to the skin and absorbs bodily fluids, the bodily fluid absorbing layer having water absorption, and an adhesive provided on at least one skin contact surface side of the bodily fluid absorbing layer And a body fluid-absorbing sheet provided with a layer.

  Moreover, it is preferable that the said adhesive layer is provided so that at least one part by the side of the skin contact surface of the said bodily fluid absorption layer may be exposed.

  Moreover, it is preferable that the said adhesive layer is provided with the some adhesive part arrange | positioned at dot shape.

  Moreover, it is preferable that the said adhesive layer consists of a HLB type | mold double phase acrylic adhesive.

Moreover, it is preferable that the said bodily fluid absorption layer consists of an aggregate | assembly obtained by mixing natural fiber and synthetic fiber and heat-processing at the temperature 10-50 degree | times higher than the softening point of synthetic fiber.

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

Moreover, it is preferable that the said surface layer is interposed between the said bodily fluid absorption layer and the said adhesive layer.

Moreover, it is preferable that each said bodily fluid absorption sheet is provided 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.

  Moreover, the sheet | seat for perspiration removal which consists of said each bodily fluid absorption sheet is preferable.

  Further, a side sweat removing sheet made of each of the body fluid absorbing sheets is preferable.

  According to the bodily fluid absorption sheet of the present invention, excellent body fluid absorbability and wearability that can be applied directly to the skin, for example, to absorb bodily fluids derived from a location that secretes and discharges bodily fluids in large quantities and / or in a wide range, are exhibited. be able to.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a plan view of a body fluid absorbing sheet 10 according to an embodiment of the present invention, and FIG. 2 is a side sectional view of the body fluid absorbing sheet 10.

  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 a pressure-sensitive adhesive layer 12 provided on the skin contact surface side of the body fluid absorbing layer 11. 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.

  Here, in this specification, the “skin contact surface side” 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 using the body fluid absorbing sheet 10, at least the adhesive material layer 12 above the body fluid absorbing sheet 10 is provided on the surface side where the sheet 10 contacts the skin a. It refers to the side of the surface that is being used.

  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.

  The body fluid absorbing layer 11 is not particularly limited as long as it has water absorbency. For example, a well-known water-absorbing pulp or water-absorbing polymer used for sanitary napkins, diapers, sweat-removing pads, and origami sheets. An absorbent material, a fiber structure composed of a woven fabric, a knitted fabric, a nonwoven fabric, a pulp product, or the like can be used. Among them, it is preferable to use an aggregate (for example, non-woven 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. Examples of natural fibers include cotton, silk, pulp, wool and hemp. Among such natural fibers, cellulosic fibers such as cotton and pulp are preferable because contact dermatitis such as allergy is unlikely to occur, rash is likely to occur, and body fluid absorbability is excellent. Examples of the synthetic fiber include nylon fiber, polyethylene fiber, polyester fiber, polyamide fiber, acrylic fiber, polyvinyl alcohol fiber, polypropylene fiber, polyethylene terephthalate fiber, ethylene vinyl acetate fiber, urethane fiber, and acrylic fiber. Moreover, semi-synthetic fibers such as rayon fiber, acetate fiber, and cupra, and blended and mixed products of various fibers can also be used. Of these, synthetic fibers such as ethylene vinyl acetate 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 vinyl acetate / polypropylene composite fiber, and the like, and a polyethylene / polypropylene composite fiber is more preferable because of its excellent elastic recovery function. Further, it is more preferable to use a polyethylene / polypropylene composite fiber in which the outer periphery of a core made of polypropylene fiber is encapsulated with polyethylene, since the core polypropylene fiber can exhibit an excellent elastic recovery function when used.

  The aggregate is preferably a blend of natural fibers and synthetic fibers in a weight ratio of 3: 7 to 7: 3. Thereby, it can be set as the bodily fluid absorption layer 11 excellent in the resistance with respect to a twist and a bend, and a bodily fluid absorptivity. Furthermore, what mix | blended natural fiber and synthetic fiber in the ratio of 4: 6-6: 4 by weight ratio is more preferable. Thereby, it can be set as the bodily fluid absorption layer 11 which is excellent in bodily fluid absorbability, can prevent the fall of the natural fiber from the bodily fluid absorption layer 11, and is excellent in the feeling of use as a touch.

  Furthermore, a more preferable aggregate is obtained by mixing natural fibers and synthetic fibers at the above-described mixing ratio, and heat-treating them at a temperature that is preferably 10 to 50 ° C higher than the softening point of the synthetic fibers, more preferably 20 to 40 ° C. Can be obtained. For example, when polyethylene / polypropylene composite fiber is used as the synthetic fiber, heat treatment is preferably performed at 120 to 160 ° C., and more preferably at 130 to 150 ° C. As a result, the synthetic fibers are appropriately melted and entangled with the natural fibers, so that excellent bodily fluid absorbability and a soft touch can be obtained, and the bodily fluid absorbing layer 11 from which the natural fibers do not fall off can be obtained. Furthermore, if the thickness of the synthetic fiber is less than 1.0 dtex, the natural fiber cannot be satisfactorily entangled with the natural fiber, and the natural fiber tends to fall off from the body fluid absorbing layer 11, and 5.0 dtex. Exceeding the above value tends to cause the body fluid absorption layer 11 to be hard and stiff and inferior in wearability. Therefore, the thickness of the synthetic fiber is preferably 1.0 to 5.0 dtex, and more preferably 2.0 to 3.5 dtex.

Basis weight of the stack constituting the body fluid absorbent layer 11, in consideration of the balance between discomfort to water retention capacity and the skin, it is preferable to set the 20 to 150 g / ^{m 2,} is set to 40 to 120 g / ^{m 2} Is more preferable.

  The pressure-sensitive adhesive layer 12 is provided so that at least a part of the body fluid absorption layer 11 on the skin contact surface side is exposed. As long as the body fluid can be absorbed by the body fluid absorption layer 11, the pressure-sensitive adhesive on the skin contact surface The area ratio of the layer 12 is not particularly limited. In the present embodiment, the pressure-sensitive adhesive layer 12 is composed of a plurality of pressure-sensitive adhesive portions 13 provided with gaps. Such a gap is preferable in that the bodily fluid does not enter between the skin and the adhesive portion 13 and the bodily fluid can be efficiently absorbed by the bodily fluid absorbing layer 11. The ratio of the area of the exposed part on the skin contact surface side of the body fluid absorbing layer 11 (for example, the area of the gap between the adhesive parts 13) to the unexposed area (for example, the installation area of the adhesive part 13) is 0.1. If it is less than the range, the body fluid cannot be sufficiently absorbed by the body fluid absorption 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, this area ratio is preferably 0.1 to 0.9, more preferably 0.2 to 0.8, and still more preferably 0.4 to 0.7.

  Moreover, the adhesive layer 12 is comprised from the single or several adhesion part 13 arrange | positioned in various shapes, such as a dot shape, annular | circular shape, a triangular shape, a rectangular shape, square shape, rod shape, spiral shape, for example. The size and shape of the adhesive portion 13 are not particularly limited. Especially, it is preferable to arrange the adhesive layer 12 in a dot shape with the plurality of adhesive portions 13 as in the present embodiment, because at least a part of the body fluid absorption layer 11 on the skin contact surface side is exposed. More preferably, the layer 11 is evenly distributed over one surface of the skin contact surface side. This makes it difficult for the body fluid to enter between the skin and the adhesive portion 13, and the body fluid absorbing layer 11 efficiently absorbs body fluid flowing from any direction such as not only the side surface of the body fluid absorbing layer 11 but also the skin contact surface side. Can be made. Moreover, it becomes difficult for body fluid to enter between the adhesive portions 13, so that the body fluid absorbing sheet 10 can be effectively prevented from falling off. Furthermore, it can be easily peeled off from the skin without applying stress after use.

  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 melts, and olefin-based hot melts. And water-insoluble adhesives such as HLB type double phase acrylic pressure-sensitive adhesive (manufactured by K & I Medical Research). The adhesive layer 12 is preferably one that can be peeled off without giving any irritation to the skin after use. Among the above adhesives, the HLB type 2 is excellent in that it has excellent followability to the skin and has little irritation to the skin. A heavy phase acrylic adhesive (manufactured by K & I Medical Research) is preferred.

The adhesive strength of the pressure-sensitive adhesive layer 12 is a strength that can withstand practical use, that is, the tack force is preferably 50 gf or more, more preferably 80 to 220 gf, and even more preferably 100 to 200 gf. Moreover, as a peeling force which is the strength at the time of peeling of an adhesive agent, 70 gf or more is preferable, 80-250 gf is more preferable, 100-200 gf is further more preferable. The preferred peel strength is that after applying a pressure-sensitive adhesive to a test piece prepared by cutting out the material used for the body fluid-absorbing sheet 10 and attaching it to an attached cotton white cloth (Kanakin No. 3) for JIS dyeing fastness test, Judgment 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 bonding a test piece (60 mm x 120 mm) to a 60 mm x 120 mm JIS dyeing fastness test cotton white cloth (Kanakin 3), a 35 g / cm ² load was applied for 30 seconds to remove the load. The sample is allowed to stand for 1 to 2 hours in an environment at a temperature of 35 to 40 ° C. and a humidity of 75%, and then left for another 30 minutes in an environment of a temperature of 20 ° C. and a humidity of 50%. Further, a part of the test piece is peeled off slightly, and when the tensile tester (AGS-H manufactured by Shimadzu Corporation) is pulled at a speed of 300 mm / min (test piece width 60 mm, peeling direction 120 mm), Judge based.

  According to the bodily fluid absorption sheet 10 configured as described above, the bodily fluid absorption sheet 10 is directly adhered to, for example, the skin of the armpits or the like by the pressure-sensitive adhesive layer 12, so that bodily fluids such as sweat Of these, the body fluid absorption layer 11 can absorb the portion where the adhesion portion 13 is not provided, for example, the gap between the adhesion portions 13, the side surface of the body fluid absorption layer 11, and the like. Thereby, the bodily fluid can be efficiently absorbed into the bodily fluid absorbing layer 11 and the amount of bodily fluid existing between the pressure-sensitive adhesive layer 12 and the skin can be reduced. It is possible to effectively prevent dropout, twisting, and misalignment, that is, it is possible to maintain the excellent body fluid absorbability and adhesiveness of the body fluid absorbing sheet 10. In particular, a strong adhesive force is required in order to prevent the bodily fluid absorption sheet 10 from falling off in addition to excellent bodily fluid absorbability at a portion where the amount of perspiration is large, such as a side portion, or a portion where the area such as the back or the buttocks is wide. Therefore, it is particularly effective in such a case.

  Further, according to the bodily fluid absorbing sheet 10, as shown in FIG. 4, when the sweat on the side part is targeted, the skin and the skin are in contact with each other where the sweat flows from the side part, such as the second arm and the trunk. In the portion, by sticking the body fluid absorbing sheet 10 to the skin on one side (for example, the second arm side), it is possible to absorb not only the sweat that flows on one side but also the sweat that flows on the other side (for example, the trunk side) that contacts. Therefore, excellent body fluid absorbability can be obtained over a wide range. Further, in this case, even in the side part where the amount of perspiration is very large, the upper arm and the torso have a small amount of perspiration. Therefore, when the body fluid absorbing sheet 10 is attached to the part, the sweat that flows is absorbed by the body fluid absorbing layer. It is preferable in that it can be effectively absorbed by the side surface 11 and the bodily fluid absorbing sheet 10 can be prevented from falling off due to sweat. Furthermore, for example, the body fluid absorbing sheet 10 is affixed while avoiding joints such as the side, so that the body fluid absorbing sheet 10 efficiently absorbs sweat flowing from the joint without causing the body fluid absorbing sheet 10 to be twisted or displaced due to the movement of the joint. can do.

  Moreover, according to this bodily fluid absorption sheet 10, the adhesive layer 12 is provided in the skin contact surface side of the bodily fluid absorption layer 11, and the pasting area as the whole bodily fluid absorption sheet 10 with respect to the skin contact area of the bodily fluid absorption layer 11 is provided. Therefore, the pasting area can be reduced while maintaining the body fluid absorption. Thereby, since it can be used without difficulty in various parts without limiting the application part, excellent wearability can be obtained.

  The pressure-sensitive adhesive layer 12 only needs to 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. Moreover, the number of adhesive layers 12, an installation surface, and an installation area can be changed suitably.

  For example, in the present embodiment, the pressure-sensitive adhesive layer 12 is composed of a plurality of pressure-sensitive adhesive portions 13 provided at intervals, but may be composed of a single pressure-sensitive adhesive portion 13. In this case, the part where the adhesion part 13 is installed may be a part of the body fluid absorption layer 11 on the skin contact surface side or the entire surface. 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, the body fluid absorption layer 11 of the body fluid absorption layer 11, Body fluid can be absorbed from the side opposite to the skin contact surface side where the pressure-sensitive adhesive layer 12 is provided, the side surface of the body fluid absorbing layer 11, and the like, and excellent body fluid absorbability and wearability can be obtained.

  As mentioned above, although one Embodiment of this invention was explained in full detail, the specific aspect of this invention is not limited to the said embodiment.

  As shown in FIG. 5, the body fluid absorbing sheet 10 may further include 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.

  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 a body fluid permeability, and a sheet-like or film-like fiber structure made 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 (texture), skin irritation, and body fluid absorbability. Examples of the fibers constituting the fiber structure include natural fibers and synthetic fibers, which 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 a raw material for the body fluid absorbing layer 11. The shape of these fiber structures is not particularly limited. However, if the surface is a mesh and / or embossed pattern, the contact area with the skin is reduced and the feeling of adhesion when worn is reduced. It is preferable from the viewpoint that the fluid permeability of bodily fluids such as sweat is improved and that it is easy to reach the bodily fluid absorbing layer 11 even with a small amount of bodily fluids. Moreover, it is preferable to perform embossing so that the hollow end part of the recessed part of the processed surface layer 14 may open. When the mesh and / or 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.

  Nonwoven fabrics include wet papermaking, dry papermaking, spunbond, meltblown, latex resin bond, solvent bond, stitchbond, needle punch, spunlace, thermal bond, air-through, airlaid, etc. It can manufacture by the method of. Of these, methods such as the spunlace method, thermal bond method, air-through method, airlaid method, needle punch method, and spunbond method are preferable. Since these methods have a good texture and do not use an adhesive or a solvent, they are applied to the skin. The safety can be increased.

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 body fluid permeability and reduction in discomfort to the skin, and is preferably ²⁰ to 50 g / m ^2. it is more preferably set to m ^2.

  The surface layer 14 and the body fluid absorbing layer 11 can be bonded with, for example, a water-soluble adhesive such as an acrylic water-soluble adhesive, or a water-insoluble adhesive such as a rubber hot melt or an olefin hot melt. . The adhesive is preferably one that can be bonded and fixed without peeling off the bonded surface during and after use of the body fluid-absorbing sheet 10.

  According to such a bodily fluid absorption sheet 10, since the surface layer 14 is provided on the surface of the bodily fluid absorption layer 11, the bodily fluid absorption layer 11 can be protected and excellent wearability can be obtained. Further, the surface layer 14 can keep the skin clean.

  Moreover, the surface layer 14 may be interposed between the bodily fluid absorption layer 11 and the adhesive layer 12, as shown in FIG.

  According to such a body fluid absorbing sheet 10, since the surface layer 14 softly contacts the skin even on the surface provided with the pressure-sensitive adhesive layer 12, excellent wearability can be obtained.

  Moreover, in order to show the said effect, the surface layer 14 should just be provided in at least one part of the bodily fluid absorption layer 11, and may be provided in the some part. Moreover, the number of the surface layers 14, an installation surface, and an installation area can be changed suitably.

  Further, 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 efficiently reaches the body fluid absorbing layer 11 through the pores of the fiber structure. Can be made.

  The water-repellent treatment can be performed by preparing a sheet-like fiber structure and then subjecting both surfaces of the structure to a water-repellent treatment. Any method of preparation may be employed.

  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 processed using a water-repellent treatment agent containing silicon oil, fluororesin, methyl hydrogen polysiloxane and the like.

  Further, as shown in FIG. 7, the body fluid absorbing sheet 10 may further include 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.

  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, vinyl chloride and the like can be used. Films obtained by uniaxially stretching these materials can reliably prevent outflow of body fluids. By using the waterproof film layer 15 as such a material, even a large amount of body fluid does not flow to the outside, which is preferable in terms of wearability. A film obtained by kneading an inorganic substance such as calcium carbonate powder into 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. When the waterproof film layer 15 is made of such a material, discomfort due to stuffiness or the like can be reduced. Each of the waterproof film layers 15 is preferably used according to the usage situation.

  Moreover, it is preferable to set the thickness of the waterproof film layer 15 to 10 to 50 μm from the viewpoint that the absorbed body fluid is not permeated and it is difficult to feel uncomfortable at the time of wearing.

  According to this bodily fluid absorbing sheet 10, the waterproof film layer 15 is provided on the surface of the bodily fluid absorbing layer 11, so that leakage of bodily fluid absorbed by the bodily fluid absorbing layer 11 can be prevented. Moreover, thereby, the bodily fluid absorption sheet 10 can be comfortably used without soiling clothes.

  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 a side part, it is preferable that it is on the surface facing the surface in which the adhesive layer 12 was provided among the surfaces of the bodily fluid absorption layer 11. 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, the body fluid absorbing sheet 10 is preferably on the side surface of the body fluid absorbing layer 11. Thereby, the bodily fluid absorbed by the bodily fluid absorption layer 11 can be prevented from flowing out in the direction of gravity.

  Moreover, in order to show the said effect, the waterproof film layer 15 should just be provided in at least one part of the bodily fluid absorption layer 11, and may be provided in the some part. Moreover, the number of waterproofing film layers 15, an installation surface, and an installation area can be changed suitably.

  Moreover, the surface layer 14 and the waterproof film layer 15 can be used together. 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 absorbent 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.

  Moreover, the waterproof film layer 15 may be provided so that the bodily fluid absorption layer 11 may be partitioned, as shown in FIG.

  According to such a body fluid absorbing sheet 10, since the body fluid absorbing layer 11 is partitioned by the waterproof film layer 15, it is possible to prevent the body fluid absorbed on one side of the body fluid absorbing layer 11 from penetrating to the other side. . For example, when the body fluid absorbing sheet 10 is used at a portion where the skin and skin contact, such as the second arm and torso, the body fluid absorbed from the skin on one side (for example, the second arm side) is absorbed by the body fluid on the other side (for example, the torso side). Since it does not penetrate into the layer 11, more body fluid can be absorbed.

  Moreover, in this bodily fluid absorption sheet 10, the surface layer 14 can be used together, such as providing the surface layer 14 on the side surface of the bodily fluid absorption layer 11, for example. Thereby, it can be set as the bodily fluid absorption sheet 10 excellent in the touch, the bodily fluid absorbability, and the mounting | wearing property. Further, a further waterproof film layer can be provided on the side surface of the body fluid absorbing layer 11. Thereby, since the leakage of the bodily fluid absorbed by the bodily fluid absorption layer 11 can be surely prevented, clothes can be prevented from being soiled and further excellent comfort can be realized.

  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. Thereby, the unpleasant odor emitted from body fluids, such as sweat, can be reduced. In this case, a deodorant is preferably interposed between the body fluid absorbing layer 11 and the waterproof film layer 15. Thereby, the irritation | stimulation of the deodorizer to the skin at the time of mounting | wearing can be avoided, and a itch and a rash can be prevented.

  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, a lubricant such as magnesium stearate, and ethylene acetate. It can be obtained by mixing resin powder such as vinyl polymer. The particle size of the deodorant is preferably set to about 5 μm or less in terms of the deodorizing effect. Moreover, it is preferable from the balance of a deodorizing effect and industrial productivity that the compounding ratio of the deodorizing component with respect to the deodorant whole quantity shall be 10 to 80%.

  Also, a known fragrance component can be added to the body fluid absorbing sheet 10. Thereby, the bad smell emitted from body fluids, such as sweat, can be masked.

  The bodily fluid absorption 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 near the location.

It is a top view of the bodily fluid absorption sheet which concerns on one Embodiment of this invention. It is side surface sectional drawing of the bodily fluid absorption sheet shown in FIG. It is a figure which shows the contact state of a bodily fluid absorption sheet and skin. It is a figure which shows one use condition of a bodily fluid absorption sheet. It is side surface sectional drawing of the bodily fluid absorption sheet which concerns on other embodiment. It is side surface sectional drawing of the bodily fluid absorption sheet which concerns on other embodiment. It is side surface sectional drawing of the bodily fluid absorption sheet which concerns on other embodiment. It is side surface sectional drawing of the bodily fluid absorption sheet which concerns on other embodiment. It is side surface sectional drawing of the conventional bodily fluid absorption sheet.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Body fluid absorption sheet 11 Body fluid absorption layer 12 Adhesive layer 13 Adhesive part 14 Surface layer 15 Waterproof film layer

Claims (10)

A bodily fluid absorption sheet that adheres to the skin and absorbs bodily fluids,
A body fluid absorbing layer having water absorption;
A body fluid absorbing sheet comprising: an adhesive layer provided on at least one skin contact surface side of the body fluid absorbing layer.   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.   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.   The body pressure-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.   The said bodily fluid absorption layer consists of an aggregate | assembly obtained by mixing natural fiber and synthetic fiber and heat-processing at the temperature 10-50 degree | times higher than the softening point of synthetic fiber. Body fluid absorption sheet.   The bodily fluid absorption sheet according to any one of claims 1 to 5, wherein a surface layer having a bodily fluid permeability is provided on at least a part of the surface of the bodily fluid absorption layer.   The body fluid absorption sheet according to claim 6, wherein the surface layer is interposed between the body fluid absorption layer and the pressure-sensitive adhesive layer.   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.   A sweat removing sheet comprising the body fluid absorbing sheet according to claim 1.   The sheet | seat for sweat removal of the side part which consists of a bodily fluid absorption sheet in any one of Claim 1 to 8.

Images