WO2010087482A1 - 吸収性物品 - Google Patents
吸収性物品 Download PDFInfo
- Publication number
- WO2010087482A1 WO2010087482A1 PCT/JP2010/051364 JP2010051364W WO2010087482A1 WO 2010087482 A1 WO2010087482 A1 WO 2010087482A1 JP 2010051364 W JP2010051364 W JP 2010051364W WO 2010087482 A1 WO2010087482 A1 WO 2010087482A1
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- WIPO (PCT)
- Prior art keywords
- absorbent article
- sheet
- absorber
- hygroscopic material
- absorbent
- Prior art date
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Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/51—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the outer layers
- A61F13/511—Topsheet, i.e. the permeable cover or layer facing the skin
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/42—Use of materials characterised by their function or physical properties
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/42—Use of materials characterised by their function or physical properties
- A61L15/60—Liquid-swellable gel-forming materials, e.g. super-absorbents
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
- A61F2013/530481—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having superabsorbent materials, i.e. highly absorbent polymer gel materials
- A61F2013/530569—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having superabsorbent materials, i.e. highly absorbent polymer gel materials characterized by the particle size
Definitions
- the present invention relates to an absorbent article including a top sheet, a back sheet, and an absorber.
- absorbent articles such as sanitary napkins generally contact with the skin of the wearer and are permeable to liquid-permeable surface sheets that pass through bodily fluids such as menstrual blood excreted from the wearer and do not pass through bodily fluids.
- a liquid-impermeable back sheet and an absorbent body that is disposed between the top sheet and the back sheet and absorbs body fluid.
- the conventional absorbent article described above has the following problems. That is, before the absorbent article is worn, specifically, if the humidity (relative humidity) during storage of the absorbent article is high, the hygroscopic material absorbs moisture in the air, and the absorbent article is sufficient when worn. Has a problem that it cannot absorb moisture. That is, there is a problem that sufficient moisture absorption performance cannot be exhibited at the time of wearing and the wearer's discomfort due to stuffiness or stickiness at the time of wearing cannot be sufficiently suppressed.
- the present invention has been made in view of such a situation, and provides an absorbent article that can exhibit sufficient moisture absorption performance when worn and can more reliably suppress discomfort of the wearer due to stuffiness or stickiness. With the goal.
- a feature of the present invention is that a liquid-permeable top sheet (top sheet 10), a liquid-impermeable back sheet, and an absorber disposed between the top sheet and the back sheet (back sheet 20)
- An absorbent article (absorbent article 1) comprising (absorbent body 30) having a granular material that is an electrolyte as a hygroscopic material (hygroscopic material 70), wherein the hygroscopic material includes the top sheet and the back sheet. The main point is that it is disposed between the two.
- the present invention can provide an absorbent article that exhibits sufficient moisture absorption performance when worn and can more reliably suppress discomfort of the wearer due to stuffiness or stickiness.
- FIG. 1 is a plan view of an absorbent article according to the first embodiment of the present invention.
- 2 is a cross-sectional view taken along line F1-F1 'shown in FIG.
- FIG. 3 is an enlarged view showing an area A of the cross-sectional view shown in FIG.
- FIG. 4 is an enlarged cross-sectional view of an absorbent article according to the second embodiment of the present invention.
- FIG. 5 is an enlarged cross-sectional view of an absorbent article according to a third embodiment of the present invention.
- FIG. 6 is an enlarged cross-sectional view of an absorbent article according to the fourth embodiment of the present invention.
- FIG. 7 is an enlarged cross-sectional view of an absorbent article according to the fifth embodiment of the present invention.
- FIG. 1 is a plan view of an absorbent article according to the first embodiment of the present invention.
- 2 is a cross-sectional view taken along line F1-F1 'shown in FIG.
- FIG. 3 is an enlarged view showing an
- FIG. 8 is an enlarged cross-sectional view of an absorbent article according to a modification of the fifth embodiment of the present invention.
- FIG. 9 is a diagram showing the relationship between the amount of moisture absorption and the passage of time under conditions assuming storage.
- FIG. 10 is a diagram showing the relationship between the amount of moisture absorption and the passage of time under conditions assuming wearing.
- FIG. 1 is a plan view of an absorbent article 1 according to the first embodiment of the present invention.
- the absorbent article 1 is, for example, a sanitary napkin.
- the absorbent article 1 has a front region F, a central region M, and a rear region R.
- the front region F is in contact with the skin surface on the stomach side of the wearer.
- the central region M contacts the skin surface around the wearer's vaginal hole.
- the rear region R is in contact with the skin surface on the buttocks side of the wearer.
- the absorbent article 1 includes a liquid-permeable top sheet 10, a liquid-impermeable back sheet 20, a liquid-impermeable side sheet 11, a side sheet 12, and an absorber 30.
- the absorber 30 is disposed between the top sheet 10 and the back sheet 20. Therefore, the absorber 30 is shown with a broken line in FIG.
- the absorbent body 30 is disposed at a central portion in the longitudinal direction of the absorbent article 1.
- the back sheet 20 has wings 21 and wings 22.
- a pair of wings 21 and wings 22 are formed at corresponding positions in the width direction of the absorbent article 1.
- the wing 21 and the wing 22 are extended in the width direction of the absorbent article 1 in the central region M.
- the width of the central region M of the back sheet 20 is larger than the widths of the front region F and the rear region R.
- the top sheet 10 has substantially the same length as the back sheet 20. End portions in the longitudinal direction of the topsheet 10 are substantially parallel to each other. The shape of the end portion of the top sheet 10 is substantially the same as the shape of the back sheet 20. The top sheet 10 covers the surface of the absorber 30.
- the side sheet 11 and the side sheet 12 are disposed on both sides of the top sheet 10.
- the side sheet 11 covers a part of the end of the absorber 30 and the wing 21.
- One end of the side sheet 11 in the longitudinal direction is substantially straight and overlaps one end of the top sheet 10 in the longitudinal direction.
- the other end portion in the longitudinal direction of the side sheet 11 coincides with a part of the outer periphery of the back sheet 20 and the shape of the wing 21.
- the side sheet 12 covers a part of the side edge of the absorber 30 and the wing 22.
- One end of the side sheet 12 in the longitudinal direction is substantially straight and overlaps the other end of the top sheet 10 in the longitudinal direction.
- the other end portion in the longitudinal direction of the side sheet 12 matches a part of the outer periphery of the back sheet 20 and the shape of the wing 22.
- FIG. 2 is a cross-sectional view of the absorbent article 1 taken along the line F1-F1 '.
- the absorbent article 1 includes a top sheet 10, a back sheet 20, and an absorber 30.
- the absorber 30 is disposed between the top sheet 10 and the back sheet 20.
- the wing 21 is covered with the side seat 11.
- the wing 22 is covered with the side seat 12.
- the top sheet 10, the side sheet 11, the side sheet 12, the back sheet 20, and the absorber 30 are joined to each other.
- the periphery of the surface sheet 10, the side sheet 11, the side sheet 12, and the back sheet 20 is joined, and the absorber 30 is enclosed.
- any one or a combination of heat embossing, ultrasonic waves, or hot melt adhesive can be used.
- the top sheet 10 and the absorbent body 30 are pressure-bonded to each other by the pressure-bonding part 41 and the pressure-bonding part 42.
- the crimping part 41 and the crimping part 42 are formed along the longitudinal direction of the absorbent body 30 on both sides in the width direction of the absorbent body 30. In the present embodiment, the crimping part 41 and the crimping part 42 are crimped by heat embossing.
- the adhesive 50 is applied in a line along the longitudinal direction of the back sheet 20 on the surface in contact with the shorts.
- a plurality of lines of the adhesive 50 are applied along the longitudinal direction of the back sheet 20.
- an adhesive material 61 and an adhesive material 62 are applied to the surface in contact with the shorts.
- the adhesive 50 is adhered to the skin side of the shorts.
- the wing 21 and the wing 22 are folded back so that the surface in contact with the shorts is in contact with the outside of the shorts.
- the adhesive 61 and the adhesive 62 are bonded to the outside of the shorts. Thereby, the absorbent article 1 is fixed to shorts.
- a protective sheet for maintaining tackiness is bonded to the adhesive 50, the adhesive 61, and the adhesive 62.
- the protective sheet is peeled off by the wearer during use.
- the longitudinal dimension of the absorbent article 1 is preferably in the range of 100 to 500 mm, and more specifically in the range of 150 to 350 mm.
- the dimension in the width direction is preferably in the range of 30 to 200 mm, and more specifically in the range of 40 to 180 mm.
- the top sheet 10 is a nonwoven fabric.
- the material of the top sheet 10 is not particularly limited as long as it is a sheet-like material having a structure that allows liquid to permeate, such as a woven fabric or a perforated plastic sheet.
- Either natural fibers or chemical fibers can be used as the woven or non-woven material.
- natural fibers include cellulose such as pulverized pulp and cotton.
- chemical fiber include regenerated cellulose such as rayon and fibril rayon, semi-synthetic cellulose such as acetate and triacetate, thermoplastic hydrophobic chemical fiber, and thermoplastic hydrophobic chemical fiber subjected to hydrophilic treatment.
- thermoplastic hydrophobic chemical fibers include single fibers such as polyethylene (PE), polypropylene (PP), and polyethylene terephthalate (PET), fibers formed by graft polymerization of polyethylene and polypropylene, and composites such as a core-sheath structure. Fiber.
- PE polyethylene
- PP polypropylene
- PET polyethylene terephthalate
- fibers formed by graft polymerization of polyethylene and polypropylene and composites such as a core-sheath structure. Fiber.
- any one of a dry method (a card method, a spunbond method, a melt blown method, an airlaid method, etc.) and a wet method, or a plurality of methods can be combined.
- the bonding method include thermal bonding, needle punching, chemical bonding, and the like, but are not limited to the above-described methods.
- a spunlace formed into a sheet shape by the hydroentanglement method can also be applied to the top sheet 10.
- the back sheet 20 is a film mainly composed of polyethylene, polypropylene, etc., a breathable resin film, a sheet obtained by bonding a breathable resin film to a nonwoven fabric such as spunbond or spunlace, and the like. Can be used.
- the back sheet 20 is preferably made of a material having flexibility that does not cause a sense of incongruity when worn.
- LDPE low density polyethylene
- the absorber 30 has a granular material that is an electrolyte as the hygroscopic material 70.
- FIG. 3 is an enlarged view showing an area A of the cross-sectional view shown in FIG. The circle in FIG. 3 is the hygroscopic material 70.
- the absorber 30 and the hygroscopic material 70 are disposed between the top sheet 10 and the back sheet 20.
- the absorber 30 includes hydrophilic fibers and pulp.
- hydrophilic fibers include pulverized pulp, cellulose such as cotton, regenerated cellulose such as rayon and fibril rayon, semi-synthetic cellulose such as acetate and triacetate, particulate polymer, fibrous polymer, thermoplastic hydrophobic chemical fiber, or A thermoplastic hydrophobic chemical fiber or the like subjected to hydrophilic treatment can be used alone or in combination. Among these, it is preferable to use pulverized pulp in consideration of low cost and ease of forming the absorber.
- the absorber 30 may be an airlaid sheet obtained by forming hydrophilic fibers or powder into a sheet shape by the airlaid method.
- the thickness of the air laid sheet is preferably 0.3 to 5.0 mm.
- a fiber and particulate polymer formed into a sheet with a binder or the like can be cited.
- the particulate polymer may be dispersed in layers in the airlaid sheet, or may be biased in the thickness direction.
- the absorber 30 may be formed with embossing in order to prevent loss of shape and twist during wearing, or to adjust the thickness.
- Embossing to the absorber 30 can be formed by passing the absorber between a patterned embossing roll and a flat roll.
- a patterned embossing roll As the pattern of the embossing roll, a lattice shape, a dot shape, a wave shape, or the like is used.
- the longitudinal dimension of the absorber 30 is preferably in the range of 90 to 490 mm. Specifically, a range of 140 to 340 mm is more preferable. Further, the dimension in the width direction is preferably in the range of 25 to 100 mm. Specifically, a range of 35 to 80 mm is more preferable.
- the moisture absorbing material 70 is a substance having a property that the moisture absorption amount at the temperature when worn by the wearer is larger than the moisture absorption amount at the temperature before use.
- the hygroscopic material 70 is a material that exhibits an endothermic reaction by hydration.
- potassium chloride, sodium chloride, sodium acetate, potassium nitrate and the like can be mentioned.
- Potassium chloride is preferred from the viewpoint of low irritation to the skin during dissolution and stability during long-term storage.
- the amount of the hygroscopic material 70 mixed in varies depending on the type of material used as the hygroscopic material, but is preferably in the range of 0.1 to 10 g. Further, it is preferably 0.5 to 5 g. In the case of 0.1 g or less, a sufficient moisture absorption effect cannot be obtained. Moreover, since there exists a possibility of giving a wearer the foreign material feeling when it exceeds 10 g, it is unpreferable.
- the hygroscopic material 70 has a granular material as an electrolyte between the liquid-permeable top sheet 10 and the liquid-impermeable back sheet 20.
- the hygroscopic material 70 is deliquescent when worn by moisture such as menstrual blood or the wearer's sweat.
- the hygroscopic material 70 promotes the action of absorbing surrounding moisture once deliquescence occurs.
- the absorbent article 1 exhibits sufficient moisture absorption performance when worn. Therefore, the absorbent article 1 can more reliably suppress the wearer's discomfort due to stuffiness or stickiness.
- the moisture absorption amount at the temperature when worn by the wearer is larger than the moisture absorption amount at the temperature before use. That is, by using a granular material that is an electrolyte as the hygroscopic material 70, the hygroscopic performance is exhibited at the time of wearing. Therefore, it is possible to prevent loss of moisture absorption in a state before use (storage state).
- 2nd Embodiment has the structure similar to the absorbent article 1 except the arrangement
- the absorbent body 30 includes a polymer absorbent body 80.
- the hygroscopic material 70 is disposed inside the absorber 30.
- a hatched circle in FIG. 4 indicates the polymer absorber 80.
- Both the hygroscopic material 70 and the polymer absorber 80 are included in the absorber 30.
- a granular polymer such as a sodium acrylate copolymer having absorptivity and hygroscopicity can be generally used.
- the hygroscopic material 70 is deliquescent and becomes an aqueous solution.
- the absorbent body 30 includes the polymer absorbent body 80, and the hygroscopic material 70 is disposed inside the absorbent body 30. Therefore, the aqueous solution formed by deliquescent of the hygroscopic material 70 can be absorbed by the polymer absorber 80. Therefore, the absorbent article 2 can more reliably suppress the wearer's discomfort due to stuffiness or stickiness.
- the particle size of the hygroscopic material 70 is mainly 500 ⁇ m or less, and the particle size of the polymer absorber 80 is mainly 400 ⁇ m or less. .
- the particle size of the hygroscopic material 70 is close to the particle size of the polymer absorber 80 and is in the vicinity of the above particle size, the handling properties of the hygroscopic material 70 and the polymer absorber 80 are improved in manufacturing.
- 3rd Embodiment has the structure similar to the absorbent article 1 except the arrangement
- the absorbent body 30 includes a polymer absorbent body 80.
- the hygroscopic material 70 is disposed inside the absorber 30.
- a hatched circle in FIG. 5 indicates the polymer absorber 80.
- the hygroscopic material 70 and the polymer absorber 80 are both included in the absorber 30.
- the hygroscopic material 70 is disposed closer to the topsheet 10 than the polymer absorber 80.
- the hygroscopic material 70 is deliquescent and becomes an aqueous solution.
- the absorbent body 30 includes a polymer absorbent body 80, and the hygroscopic material 70 is disposed inside the absorbent body 30.
- the hygroscopic material 70 is disposed closer to the topsheet 10 than the polymer absorber 80. That is, the hygroscopic material 70 is disposed near the wearer's skin. Thereby, moisture absorption performance is easy to be exhibited by the temperature of the moisture absorption material 70 being raised. Moreover, the moisture accumulated near the space close to the skin can be absorbed efficiently.
- the hygroscopic material 70 is disposed above the polymer absorbent body 80.
- the absorbent article 2 can more reliably suppress the wearer's discomfort due to stuffiness or stickiness.
- the particle size of the hygroscopic material 70 is mainly 500 ⁇ m or less, and the particle size of the polymer absorber 80 is Mainly, it is preferably 400 ⁇ m or less. Since the particle diameter of the hygroscopic material 70 disposed on the upper side of the polymer absorbent body 80 is larger than the particle diameter of the polymer absorbent body 80, moisture and moisture are easily absorbed on the upper layer side of the absorbent article 3. There is an advantage.
- 4th Embodiment has the structure similar to the absorbent article 1 except the arrangement
- the absorbent body 30 includes a polymer absorbent body 80.
- the hygroscopic material 70 is disposed closer to the topsheet 10 than the absorber 30.
- the hygroscopic material 70 is disposed closer to the topsheet 10 than the absorbent body 30, so that deliquescence is promoted. Therefore, the moisture absorption performance is more easily exhibited. Moreover, the moisture accumulated near the space close to the skin can be absorbed efficiently. The aqueous solution formed by the deliquescent of the moisture absorbent 70 is efficiently absorbed by the absorber 30 and the polymer absorber 80 when lowered due to the influence of gravity. Therefore, the absorbent article 2 can more reliably suppress the wearer's discomfort due to stuffiness or stickiness.
- the particle diameter of the moisture absorbent material 70 is mainly 500 ⁇ m or less, and the particle diameter of the polymer absorber 80 is mainly 400 ⁇ m or less. Since the particle diameter of the hygroscopic material 70 disposed on the upper side of the polymer absorbent body 80 is larger than the particle diameter of the polymer absorbent body 80, moisture and moisture are easily absorbed on the upper layer side of the absorbent article 4. There is an advantage.
- the absorbent article 5 has the structure similar to the absorbent article 1 except the arrangement
- the absorbent article 5 includes a hydrophilic sheet 90 including hydrophilic fibers having a high affinity for water.
- the absorbent body 30, the hygroscopic material 70, and the polymer absorbent body 80 are covered with a hydrophilic sheet 90.
- the hygroscopic material 70 is in contact with the hydrophilic sheet 90.
- the hydrophilic sheet 90 is, for example, a tissue.
- the hydrophilic sheet 90 can retain moisture such as menstrual blood or wearer's sweat. Moisture oozes over the hydrophilic sheet 90.
- the hygroscopic material 70 contacts the hydrophilic sheet 90. Therefore, a small amount of moisture can be diffused on the hydrophilic sheet 90 and can be absorbed by the moisture absorbent 70 existing in a wider range. Therefore, the deliquescent of the hygroscopic material 70 is promoted. Thereby, the hygroscopic performance of the hygroscopic material 70 can be exhibited.
- the hygroscopic material 70 is disposed at a position close to the skin, the moisture accumulated in the vicinity of the space close to the skin can be efficiently absorbed. Further, the hygroscopic material 70 is disposed above the polymer absorbent body 80 in the thickness direction of the absorbent article 5. Thereby, the aqueous solution formed by deliquescent of the hygroscopic material 70 descends due to the influence of gravity and is efficiently absorbed by the polymer absorber 80. Therefore, the absorbent article 5 can more reliably suppress the wearer's discomfort due to stuffiness or stickiness.
- the particle diameter of the moisture absorbent material 70 is mainly 500 ⁇ m or less, and the particle diameter of the polymer absorber 80 is mainly 400 ⁇ m or less. Since the particle diameter of the hygroscopic material 70 disposed on the upper side of the polymer absorbent body 80 is larger than the particle diameter of the polymer absorbent body 80, moisture and moisture are easily absorbed on the upper layer side of the absorbent article 5. There is an advantage.
- the absorbent article 6 shown as a modification of the fifth embodiment will be described.
- the absorbent article 6 includes a hydrophilic sheet 91 including a hydrophilic fiber and a hydrophilic sheet 92. That is, the absorber 30 and the hygroscopic material 70 are covered with separate hydrophilic sheets.
- the hygroscopic material 70 is covered with a hydrophilic sheet 91.
- the hygroscopic material 70 is in contact with the hydrophilic sheet 91.
- the hydrophilic sheet 91 may include the hygroscopic material 70 and the absorber 30.
- the absorber 30 and the polymer absorber 80 are covered with a hydrophilic sheet 92.
- the hygroscopic material 70 is in contact with the hydrophilic sheet 90.
- the hydrophilic sheet 91 and the hydrophilic sheet 92 are, for example, tissues.
- the embodiment of the present invention can be modified as follows.
- the absorbent article has been described as a sanitary napkin, but the present invention can also be applied to so-called liners, incontinence articles (referred to as incontinence pads), and the like.
- the absorbent article is not limited to the planar shape disclosed in FIG. 1 described above. Any shape that matches the shape of the inseam of the wearer and the shape of the shorts may be used.
- the planar shape of the absorbent article can be a rectangle, an ellipse, a bowl, or the like.
- an elastic material such as an elastic material may be provided at both ends in the width direction of the absorber.
- a granular polymer such as a sodium acrylate copolymer having absorptivity and hygroscopicity can be used.
- granular deodorizing materials such as silver, copper, zinc, silica, activated carbon, aluminosilicate compounds, and zeolite are placed between the top sheet and back sheet. You may set up.
- silver, copper, zinc, silica, activated carbon, aluminosilicate compounds, zeolite, and electrolytes that can be used as a hygroscopic material, there are those that have an effect (antibacterial action or bactericidal action) of suppressing the growth of various bacteria.
- an electrolyte having an effect of suppressing the propagation of various germs is used as a moisture absorbent, the effect of suppressing the propagation of various germs can be imparted to the absorbent article.
- an absorbent article (Examples 1 and 2) in which 1.0 g of potassium chloride was disposed as a hygroscopic material between a liquid-permeable top sheet and a liquid-impermeable back sheet, and conditions assuming storage Placed below for 72 hours.
- an absorbent article (Comparative Examples 1 and 2) in which 1.0 g of a polymer absorber is disposed between a liquid-permeable top sheet and a liquid-impermeable back sheet is prepared. Placed below. The results are shown in FIG.
- condition 3 assuming wearing: temperature 35 ° C / humidity 80RH%
- wearing condition 4 Temperature 35 ° C / Humidity 85RH%
- the absorbent articles of Examples 1 and 2 hardly absorb moisture during storage, the amount of moisture absorption increases under conditions 3 and 4 assuming wearing. That is, the moisture absorption amount of potassium chloride increases in a high temperature and humidity environment. Since the absorbent articles of Examples 1 and 2 hardly absorb moisture during storage, there is no loss of hygroscopic performance during storage, and the adsorption performance is improved during wearing.
- sufficient moisture absorption performance can be exhibited at the time of wearing, and the discomfort of the wearer due to stuffiness or stickiness can be more reliably suppressed, so that it can be applied to absorbent articles such as liners and incontinence pads.
Abstract
Description
図1及び図2を参照して、本発明の第1実施形態に係る吸収性物品について説明する。図1は、本発明の第1実施形態に係る吸収性物品1の平面図である。吸収性物品1は、例えば、生理用ナプキンである。
次に、本発明の第2実施形態に係る吸収性物品2について説明する。第2実施形態は、表面シート10と裏面シート20との間に配設される吸収体30及び吸湿材70の配設位置が異なるほかは、吸収性物品1と同様の構成を有する。従って、図2に示す断面図の領域Aを拡大して示す拡大図を用いて説明する。図4に示すように、吸収性物品2において、吸収体30は、高分子吸収体80を含む。吸湿材70は、吸収体30の内部に配設される。図4における斜線丸印は、高分子吸収体80を示す。吸湿材70及び高分子吸収体80は共に吸収体30に含まれる。高分子吸収体80としては、一般的に、吸収性や吸湿性のあるアクリル酸ナトリウム共重合体などの粒状ポリマーを用いることができる。
次に、本発明の第3実施形態に係る吸収性物品3について説明する。第3実施形態は、表面シート10と裏面シート20との間に配設される吸収体30及び吸湿材70の配設位置が異なるほかは、吸収性物品1と同様の構成を有する。従って、図2に示す断面図の領域Aを拡大して示す拡大図を用いて説明する。図5に示すように、吸収性物品3において、吸収体30は、高分子吸収体80を含む。吸湿材70は、吸収体30の内部に配設される。図5における斜線丸印は、高分子吸収体80を示す。第3実施形態では、吸湿材70及び高分子吸収体80は共に吸収体30に含まれている。吸湿材70は、高分子吸収体80よりも表面シート10側に配設される。
次に、本発明の第4実施形態に係る吸収性物品4について説明する。第4実施形態は、表面シート10と裏面シート20との間に配設される吸収体30及び吸湿材70の配設位置が異なるほかは、吸収性物品1と同様の構成を有する。従って、図2に示す断面図の領域Aを拡大して示す拡大図を用いて説明する。図6に示すように、吸収性物品4において、吸収体30は、高分子吸収体80を含む。吸湿材70は、吸収体30よりも表面シート10側に配設される。
次に、本発明の第5実施形態に係る吸収性物品5について説明する。第5実施形態は、表面シート10と裏面シート20との間に配設される吸収体30及び吸湿材70の配設位置が異なるほかは、吸収性物品1と同様の構成を有する。従って、図2に示す断面図の領域Aを拡大して示す拡大図を用いて説明する。図7に示すように、吸収性物品5は、水に対する親和性が高い親水性の繊維を含む親水性シート90を備える。吸収性物品5において、吸収体30、吸湿材70、高分子吸収体80は、親水性シート90によって覆われている。吸湿材70は、親水性シート90と接触する。親水性シート90は、例えば、ティッシュである。
保管を想定した条件2:温度30℃/湿度80RH%
また、実施例1,2の吸収性物品を、着用を想定した条件下に72時間載置した。比較例1,2の吸収性物品を、同様の条件下に載置した。結果を図10を示す。
着用を想定した条件4:温度35℃/湿度85RH%
結果によれば、吸湿材として塩化カリウムを用いた実施例1,2の吸収性物品は、保管条件1,2の下では、時間が経過しても殆ど吸湿していない。これに対して、比較例1,2の吸収性物品は、保管条件1,2の下でも吸湿している。従って、比較例1,2の吸収性物品は、保管時における吸湿量の分だけ、着用時の吸湿性能が低下していることがわかった。
Claims (7)
- 液透過性の表面シートと、
液不透過性の裏面シートと、
前記表面シートと前記裏面シートとの間に配設される吸収体とを備える吸収性物品であって、
吸湿材として電解質である粒状体を有し、
前記吸湿材は、前記表面シートと前記裏面シートとの間に配設される吸収性物品。 - 前記吸収体は、高分子吸収体を含み、
前記吸湿材は、前記吸収体の内部に配設される請求項1に記載の吸収性物品。 - 前記吸湿材は、前記高分子吸収体よりも前記表面シート側に配設される請求項2に記載の吸収性物品。
- 前記吸収性物品は、
親水性の繊維を含む親水性シートを備え、
前記吸収体は、前記親水性シートによって包まれており、
前記吸湿材は、前記親水性シートと接触する請求項2又は3に記載の吸収性物品。 - 前記吸湿材は、塩化カリウムである請求項1乃至4の何れか一項に記載の吸収性物品。
- 着用時の温度における前記吸湿材の吸湿量は、使用前の温度における吸湿量よりも多い請求項1乃至5の何れか一項に記載の吸収性物品。
- 前記吸収体は、前記高分子吸収体を含み、
前記吸湿材は、前記吸収体よりも前記表面シート側に配設される請求項1に記載の吸収性物品。
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EP10735942A EP2392301A4 (en) | 2009-02-02 | 2010-02-01 | VOIDABLE ARTICLE |
CN2010800064037A CN102300530A (zh) | 2009-02-02 | 2010-02-01 | 吸收性物品 |
US13/147,265 US20120029453A1 (en) | 2009-02-02 | 2010-02-01 | Absorbent article |
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JP2009021865A JP5569921B2 (ja) | 2009-02-02 | 2009-02-02 | 生理用ナプキン |
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US (1) | US20120029453A1 (ja) |
EP (1) | EP2392301A4 (ja) |
JP (1) | JP5569921B2 (ja) |
KR (1) | KR20110107379A (ja) |
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WO (1) | WO2010087482A1 (ja) |
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US9394637B2 (en) | 2012-12-13 | 2016-07-19 | Jacob Holm & Sons Ag | Method for production of a hydroentangled airlaid web and products obtained therefrom |
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2010
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- 2010-02-01 KR KR1020117019209A patent/KR20110107379A/ko not_active Application Discontinuation
- 2010-02-01 CN CN2010800064037A patent/CN102300530A/zh active Pending
- 2010-02-01 EP EP10735942A patent/EP2392301A4/en not_active Withdrawn
- 2010-02-01 US US13/147,265 patent/US20120029453A1/en not_active Abandoned
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US20120029453A1 (en) | 2012-02-02 |
JP2010172664A (ja) | 2010-08-12 |
JP5569921B2 (ja) | 2014-08-13 |
KR20110107379A (ko) | 2011-09-30 |
EP2392301A4 (en) | 2013-03-27 |
CN102300530A (zh) | 2011-12-28 |
EP2392301A1 (en) | 2011-12-07 |
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