WO2008062873A1 - Article absorbant et procédé de production associé - Google Patents
Article absorbant et procédé de production associé Download PDFInfo
- Publication number
- WO2008062873A1 WO2008062873A1 PCT/JP2007/072672 JP2007072672W WO2008062873A1 WO 2008062873 A1 WO2008062873 A1 WO 2008062873A1 JP 2007072672 W JP2007072672 W JP 2007072672W WO 2008062873 A1 WO2008062873 A1 WO 2008062873A1
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- WO
- WIPO (PCT)
- Prior art keywords
- contact surface
- surface side
- skin contact
- clothing
- pressing
- Prior art date
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Classifications
-
- 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
- A61F13/45—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 shape
- A61F13/47—Sanitary towels, incontinence pads or napkins
- A61F13/475—Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means
- A61F13/4751—Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means the means preventing fluid flow in a transversal direction
- A61F13/4756—Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means the means preventing fluid flow in a transversal direction the means consisting of grooves, e.g. channels, depressions or embossments, resulting in a heterogeneous surface level
-
- 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
- A61F13/45—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 shape
- A61F13/47—Sanitary towels, incontinence pads or napkins
- A61F13/4704—Sanitary towels, incontinence pads or napkins having preferential bending zones, e.g. fold lines or grooves
-
- 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
- A61F13/45—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 shape
- A61F13/47—Sanitary towels, incontinence pads or napkins
- A61F13/472—Sanitary towels, incontinence pads or napkins specially adapted for female use
-
- 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
- A61F13/45—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 shape
- A61F13/47—Sanitary towels, incontinence pads or napkins
- A61F13/472—Sanitary towels, incontinence pads or napkins specially adapted for female use
- A61F13/47218—Sanitary towels, incontinence pads or napkins specially adapted for female use with a raised crotch region, e.g. hump
-
- 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
- A61F13/45—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 shape
- A61F13/47—Sanitary towels, incontinence pads or napkins
- A61F13/475—Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means
- A61F13/4758—Sanitary towels, incontinence pads or napkins characterised by edge leakage prevention means the means preventing fluid flow in a longitudinal direction
-
- 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
-
- 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
- A61F13/514—Backsheet, i.e. the impermeable cover or layer furthest from the skin
- A61F13/51456—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by its properties
- A61F13/51464—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by its properties being stretchable or elastomeric
Definitions
- the present invention relates to an absorbent article and a method for producing the same.
- the present invention relates to an absorbent article excellent in leakage prevention and a method for producing the same.
- absorbent articles for absorbing excrement such as body fluids.
- absorbent articles are arranged on an absorbent body that absorbs and retains body fluids, a liquid-permeable surface sheet disposed on the skin contact surface of the absorbent article, and a clothing contact surface of the absorbent article.
- a liquid-impermeable back sheet for example, used in a state of being adhered to the inner surface of the undergarment.
- Patent Document 1 JP-A-10-99372 (hereinafter referred to as Patent Document 1), the first flexible shaft embossed from the skin contact surface side and the embossing from the clothing contact surface side.
- a second flexible shaft to be added is provided, and a groove is formed on the surface opposite to the embossed surface of each flexible shaft, so that when a compressive force is applied from the wearer's thigh, absorption is performed.
- An absorbent article for use by deforming a body into a desired shape is disclosed. Disclosure of the invention
- the sanitary napkin disclosed in Patent Document 1 has the second flexible shaft formed on the clothing contact surface side with respect to the skin contact surface of the absorbent body.
- the force transmitted from the second flexible shaft was diffused in various directions such as the skin contact surface side and the clothing contact surface side in the thickness direction of the absorbent article. .
- the excreta cannot be captured, and there is a risk of causing excretion leakage.
- the present invention has been made in view of the above problems, and by securing stable concave deformation of the absorbent body, the excrement discharged in large quantities is captured, and the excrement leaks. It aims at providing the absorbent article which prevents this.
- the present inventors provide a predetermined pressing groove on the clothing contact surface side of the absorbent body, and the surface of the compressed groove on the skin contact surface side is the skin of the absorbent body. It has been found that by making it protrude further to the skin contact surface side than the contact surface, the absorber can be effectively deformed into a concave shape, and the present invention has been completed. Specifically, the following absorbent articles are provided.
- the absorber has a central core portion at a substantially central portion thereof, and the space portion has the protrusion.
- the absorbent article according to (1) which is formed on at least the central core portion side of the groove back portion on both sides of the protruding portion.
- the absorber is configured to push down at least a part of the central core portion from the skin contact surface side to the clothing contact surface side when the protruding portion enters the space portion (2).
- Absorbent article as described.
- the absorbent article manufacturing apparatus according to any one of (1) to (3), wherein the absorbent body is squeezed from the skin contact surface side and the clothing contact surface side.
- the pressing portion includes a pressing portion forming means for forming the space portion formed in a concave shape on the skin contact surface side and the pressing portion formed in a convex shape on the clothing contact surface side.
- the forming means includes an upper mold roll portion having a concave portion formed in a predetermined pattern on the surface, and a lower mold roll portion having a convex portion on which the concave portion can be fitted and removed, and at least the absorption
- An apparatus for manufacturing an absorbent article which forms the pressing part and the space part by squeezing the absorbent body with the upper mold roll part and the lower mold roll part in a state where a body is fitted.
- a pressing part forming step for forming the space part formed in a concave shape on the skin contact surface side and the pressing part formed in a convex shape on the clothing contact surface side includes an upper mold roll portion having a concave portion formed in a predetermined pattern on the surface, and a lower mold roll portion having a convex portion on which the concave portion can be fitted and removed, and at least the absorption
- the manufacturing method of the absorbent article which forms the said pressing part and the said space part by pressing the said absorber with the said upper mold roll part and the said lower mold roll part in the state which fitted the body.
- FIG. 1 is a plan view of a sanitary napkin according to a first embodiment of the present invention.
- FIG. 2 is a rear view of FIG.
- FIG. 3 is an explanatory view showing an XX cross section for explaining FIG. 1.
- FIG. 4 is a partially enlarged view of FIG.
- FIG. 7B is a diagram showing a deformed state of FIG. 7A.
- FIG. 9A is a view showing a relationship relating to the joining of the absorber and the back sheet.
- FIG. 9B is a diagram showing a deformed state of FIG. 9A.
- Fig. 10A is a view showing a deformed state of the sanitary napkin according to the first embodiment.
- Fig. 10B is a view showing a deformed state of the sanitary napkin according to the first embodiment.
- FIG. 11A A sectional view for illustrating a sanitary napkin according to a second embodiment of the present invention.
- FIG. 11B is a diagram showing a deformed state of FIG. 11A.
- FIG. 12A A cross-sectional view illustrating a sanitary napkin according to a third embodiment of the present invention.
- FIG. 14B is a diagram showing a deformed state of FIG. 14A.
- FIG. 15A is a view showing an upper emboss pattern of the upper embossing roll of the sanitary napkin according to the first embodiment.
- FIG. 15B is a view showing an XX cross section of FIG. 22A.
- FIG. 16A is a view showing a lower emboss pattern of a lower embossing roll of a sanitary napkin according to the first embodiment.
- FIG. 16B is a drawing showing an XX cross section of FIG. 23A.
- FIG. 16C is a partially enlarged view of FIG. 23B.
- FIG. 17 A view showing a squeezed portion of the embossing device of the sanitary napkin according to the first embodiment.
- FIG. 1 is a plan view of a sanitary napkin according to the first embodiment of the present invention.
- FIG. 2 is a rear view of FIG.
- FIG. 3 is an explanatory view showing an XX cross section for explaining FIG.
- FIG. 4 is a partially enlarged view of FIG.
- FIG. 5 is a diagram showing another form of the compressed groove.
- FIG. 6 is an explanatory diagram for explaining a compressed groove of the sanitary napkin according to the first embodiment.
- FIG. 7A is a diagram showing another form of the sanitary napkin according to the first embodiment.
- FIG. 7B is a diagram showing a deformed state of FIG. 7A.
- FIG. 8 is a diagram showing another form relating to the arrangement of the compressed grooves.
- FIG. 8 is a diagram showing another form relating to the arrangement of the compressed grooves.
- FIG. 9A is a diagram showing a relationship relating to the bonding between the absorber and the back sheet.
- FIG. 9B is a diagram showing a deformed state of FIG. 9A.
- FIG. 10A is a diagram showing a deformed state of the sanitary napkin according to the first embodiment.
- FIG. 10B is a diagram showing a deformed state of the sanitary napkin according to the first embodiment.
- FIG. 11A is a view showing a cross-section for explaining a sanitary napkin according to a second embodiment of the present invention.
- FIG. 11B is a diagram showing a deformed state of FIG. 11A.
- FIG. 12A is a view showing a cross section for explaining a sanitary napkin according to a third embodiment of the present invention.
- FIG. 12A is a view showing a cross section for explaining a sanitary napkin according to a third embodiment of the present invention.
- FIG. 12B is a diagram showing a deformed state of FIG. 12A.
- FIG. 13 is a diagram showing an embossing device according to the first embodiment.
- FIG. 14 is a diagram showing a sanitary napkin swallowed in the embossing device.
- FIG. 15A is a view showing an upper embossing pattern of the upper embossing roll of the sanitary napkin according to the first embodiment.
- FIG. 15B is a diagram showing an XX cross section of FIG. 15A.
- FIG. 16A is a view showing a lower emboss pattern of the lower boss roll of the sanitary napkin according to the first embodiment.
- FIG. 16B is a diagram showing an XX cross section of FIG. 16A.
- FIG. 16C is a partially enlarged view of FIG. 16B.
- FIG. 17 is a view showing a kneading portion of the embossing device of the sanitary napkin according to the first embodiment.
- the sanitary napkin 1 is provided on the skin contact surface side of the wearer, the liquid-permeable surface sheet 2 constituting the surface layer, and the wear contact surface side of the wearer And a liquid-impermeable back sheet 3 constituting the back layer, and a liquid-retaining absorbent 4 wrapped in a tissue 7 and constituting the absorption layer.
- An adhesive portion 8 is provided on the clothing contact surface side of the back sheet 3, and the sanitary napkin 1 is joined to the wearer's underwear or the like in the adhesive portion 8.
- the sanitary napkin 1 includes a liquid-permeable intermediate sheet 5 disposed between the top sheet 2 and the absorbent body 4, and a side sheet 6 constituting a part of the surface layer.
- side flaps W1, W2 extending in the width direction (WD) of the sanitary napkin 1.
- the side flaps Wl and W2 are provided with adhesive portions 9, and the side flaps Wl and W2 are folded and joined to the underwear.
- the sanitary napkin 1 includes a squeezed portion 11 in which the force on the clothing contact surface side of the back sheet 3 is also convex toward the top sheet 2 side on the clothing contact surface, and the skin contact surface side And a space 16 formed in a concave shape from the skin contact surface side of the top sheet 2 toward the back sheet 3 side.
- the squeezed portion 11 is formed so that the high-pressure squeezed portion 12 formed by high-pressure squeezing and the low-pressure squeezed portion 13 formed by low-pressure squeezing are continuous so as to surround the central core portion 40 formed at the substantially central portion of the absorbent body 4. It is formed.
- the squeezing portion 11 includes a protruding portion 15 that protrudes toward the skin contact surface side on the skin contact surface side of the absorbent body 4.
- the space 16 is formed on both sides of the protrusion 15 on the skin contact surface side.
- the top sheet 2 is disposed on the wearer's body when worn, and is in contact with the excretory part.
- the top sheet 2 may be entirely liquid permeable or may be partially liquid permeable. Further, a single sheet member or a plurality of sheet members may be joined.
- the topsheet 2 is provided with a liquid-permeable region at a substantially central portion in the width direction (WD) of the sanitary napkin 1, and the end side in the width direction (WD) is a liquid-impermeable side sheet. Covered with 6!
- the intermediate sheet 5 allows the excrement that has permeated through the top sheet 2 to permeate through the absorber 4, and also functions as a cushion during use.
- the intermediate sheet 5 is the same sheet as the top sheet 2. G member can be used.
- the absorbent body 4 is wrapped in a tissue 7, and includes a substantially elliptical central core portion 40 at a substantially central portion in the width direction (WD) of the sanitary napkin 1.
- the central core part 40 is an area surrounded by the compressed part 11.
- Side portions 41 are formed on both sides of the central core portion 40 in the width direction (WD).
- the central core part 40 and the side part 41 are partitioned by the pressing part 11.
- the side sheet 6 has a liquid-impermeable sheet member disposed on the surface layer from both sides of the sanitary napkin 1, for example, from the skin contact surface side of the side 41, extending outward in the width direction (WD).
- a part of the back sheet 3 extends outward in the width direction (WD), and the extended part of the liquid impervious sheet member and the back sheet 3 extend. It is formed by joining the parts with hot melt or the like.
- the sanitary napkin 1 includes a squeezed portion 11 that promotes concave deformation of the central core portion 40.
- the pressing part 11 is formed by pressing the top sheet 2 and the absorbent body 4 from each of the skin contact surface side and the non-skin contact surface side, and is a central core on both sides in the width direction (WD) of the absorbent body 4.
- the sanitary napkin 1 is provided so as to extend in the longitudinal direction (LD) so as to sandwich the portion 40.
- the pressing unit 11 is formed by alternately and continuously pressing each of high-pressure pressing and low-pressure pressing.
- the compressed portion 11 protrudes more on the skin contact surface side than the core surface portion 42 that is the skin contact surface side of the central core portion 40 on the skin contact surface side.
- Form part 15 On both sides sandwiching the protrusion 15, that is, between the central core portion 40 and the protrusion 15, and between the side portion 41 and the protrusion 15, there are space portions 16 provided along the protrusion 15. Is formed.
- the space portion 16 is formed on both sides of the protruding portion 15 so as to sandwich the protruding portion 15, and on the skin contact surface side of the sanitary napkin 1, the space portion 16 becomes concave from the skin contact surface side to the clothing contact surface side. It is formed as follows.
- the top portion of the space portion 16 is formed, for example, on the clothing contact surface side by 2 mm from the core surface portion 42 of the central core portion 40. In other words, the height formed at the top of the compressed part 11 It is formed so that the difference in height in the thickness direction of the absorbent body 4 between the pressing part 12 and the bottom part of the space part 16 is 2 mm.
- the height difference in the thickness direction of the absorbent body 4 between the low-pressure squeezed part 13 formed at the top of the squeezed part 11 and the bottom of the space part 16 is in the range of 0.5 to 10 mm. it can. If the differential force of the height in the thickness direction of the absorber 4 with the bottom of the space portion 16 is in the range of 0.5 to 1 Omm, the concave groove 16 formed on the skin contact surface side of the central core portion 40 This is because the protruding portion 15 becomes easier to enter.
- the space 16 is a force provided on both sides thereof so as to sandwich the protrusion 15.
- the protruding portion 15 can be bent toward the central core portion 40 side, which is the space portion 16 side.
- the projecting portion 15 can be made to act so as to tilt toward the width direction (WD) central portion side of the absorbent article with the space portion 16 as a base point.
- the space part 16 is formed in the position close
- the protruding portion 15 is formed so as to protrude from the core surface portion 42 of the central core portion 40 toward the skin contact surface side.
- the high pressure portion 12 formed at the top of the compressed portion 11 can be formed so as to be provided on the skin contact surface side by 1 mm from the core surface portion 42 of the central core portion 40.
- the height difference in the thickness direction between the high pressure portion 12 of the compressed portion 11 and the core surface portion 42 of the central core portion 40 can be set to lmm.
- the difference in height in the thickness direction between the high pressing portion 12 and the core surface portion 42 may be in the range of 0.5 to 10 mm.
- the space portion 16 formed on the skin contact surface side of the central core portion 40 is This is because the protrusion 15 is easy to enter.
- the difference in height in the thickness direction between the low pressure portion 13 of the compressed portion 11 and the core surface portion 42 of the central core portion 40 may be set to lmm.
- the pressing unit 11 includes a pair of wall portions 14 formed by squeezing by an embossing device to be described later.
- the wall portion 14 is pulled at the approximate center in the thickness direction of the sanitary napkin 1.
- a strong stress is generated, and the absorber 4 is stretched and formed by this tensile stress.
- the wall part 14 where the absorber 4 was extended becomes low density in the approximate center. This low-density part makes it possible to suppress the diffusion of excrement transmitted from the high-density part when the central core part 40 absorbs excrement.
- the pressing part 11 is, for example, a force formed by continuously pressing the top sheet 2 and the absorbent body 4 from the skin contact surface side and the clothing contact surface side. Absent.
- the first pressing groove 11 and the space 16 may be formed by continuously pressing only the absorbent body 4 from the skin contact surface side and the clothing contact surface side.
- the compressed portion 11 and the space portion 16 may be formed by continuously pressing the intermediate sheet 5 and the absorbent body 4 from the skin contact surface side and the clothing contact surface side.
- the intermediate sheet 5 and the absorbent body 4 formed of synthetic resin fiber or the like are continuously squeezed from the skin contact surface side and the clothing contact surface side, the protruding portion 15 of the squeezing portion 11 is exposed to the skin. It becomes easy to hold the shape protruding to the contact surface side.
- the squeezing portion 11 and the space portion 16 are formed in an approximately elliptical shape so as to surround the central core portion 40 on the clothing contact surface side of the sanitary napkin 1, for example, but in the present invention Not exclusively.
- the core part 40 may be formed so as to extend in the longitudinal direction (LD) of the sanitary napkin 1 and to be wide at a substantially central part. Further, it may be formed so as to extend in the longitudinal direction (LD) of the sanitary napkin 1 with the central core portion 40 interposed therebetween and to become narrow at the substantially central portion.
- the pressing part 11 may be formed on each of the skin contact surface side and the clothing contact surface side.
- the high-pressure squeezing part 12 by high-pressure squeezing and the low-pressure squeezing part 13 by low-pressure squeezing are alternately formed in the pressing part 11, but the present invention is not limited to this.
- the squeezing part 11 may be constituted by only the high-pressure squeezing part 12 or the low-pressure squeezing part 13, and may have a configuration with a constant height that is free from irregularities.
- the pressing part 11 may not form the high pressing part 12 and the low pressing part 13 continuously, but may form it for every predetermined interval. Moreover, you may use what changed the combination of the embossed pattern.
- the pressing part 11 is Alternatively, the high-pressure squeezing part 12 or the low-pressure squeezing part 13 may be provided in a part of the width that the high-pressure squeezing part 12 or the low-pressure squeezing part 13 is not provided. Moreover, the pressing part 11 may provide the high pressing part 12 or the low pressing part 13 in a part of the width which does not provide the high pressing part 12 or the low pressing part 13 in the whole width in the width direction.
- the absorber 4 and the back sheet 3 are joined by a hot melt 81 at the center core portion 40 and the side portion 41.
- the absorber 4 and the back sheet 3 are not joined.
- the absorbent body 4 and the back sheet 3 are joined at a place other than the compressed portion 11, for example, by applying a compressive force from the wearer's thigh to the width direction (WD).
- WD width direction
- the squeezed part 11 can easily move in the direction away from the back sheet 3 (on the skin contact surface side), so a large space can be formed in the core part 40 (See Figure 9B).
- the sanitary napkin 1 can be deformed in a concave shape in which, for example, the substantially central portion of the central core portion 40 protrudes toward the clothing contact surface side by providing the compressed portion 11 and the space portion 16 in the absorbent body 4.
- the compressive force is applied in the direction of the arrow shown in FIG. 10A.
- the compressive force is transmitted to the central core portion 40 via the pressing portion 11. That is, the compressive force is transmitted to the central core portion 40 through the protrusion 15.
- the protruding portion 15 on the skin contact surface side of the compressed portion 11 is inclined toward the skin contact surface side and the core of the central core portion 40 because the space portion 16 is formed on the central core portion 40 side. Deforms to sink into the surface 42 side. That is, after coming into contact with the wearer's skin, it moves so as to sink into the space portion 16 formed between the pressing portion 11 and the pressing portion 11 and the core surface portion 42 of the adjacent central core portion 40.
- the projecting portion 15 that has moved so as to sink into the space portion 16 further moves from the core surface portion 42 of the central core portion 40 to the central core portion 40 so as to push the central core portion 40 toward the clothing contact surface side. Transmit stress to 40.
- the central core portion 40 is deformed into a concave shape so that the substantially central portion protrudes toward the clothing contact surface (see FIG. 10B).
- the protruding portion 15 also moves to the skin contact surface side, so that it comes into contact with the vicinity of the wearer's excretion portion and Prevent diffusion of body fluids discharged from the surrounding area.
- FIGS. 11A to 12B A second embodiment and a third embodiment of the present invention will be described with reference to FIGS. 11A to 12B.
- the second embodiment shows another embodiment in which a shaping process is added to the back sheet 3.
- the third embodiment shows another embodiment in which a predetermined space is formed between the back sheet 3 and the absorber 4.
- FIG. 11A the sanitary napkin 1B according to the second embodiment is different from the first embodiment in that a sanitary napkin 1B obtained by adding a shaping process to the back sheet 3 is used.
- the back sheet 3 of the sanitary napkin 1B has a wave-shaped shaping process in which convex portions and concave portions extending in the longitudinal direction (LD) of the sanitary napkin 1B are continuously arranged. use.
- the sanitary napkin 1B easily protrudes the clothing contact surface side of the central core portion 40 toward the clothing contact surface side in order to deform the central core portion 40 into a concave shape.
- the back sheet 3 disposed on the non-skin contact surface side of the central core portion 40 is preferably formed so as to be easily stretched in the width direction (WD). This is to prevent the back sheet 3 from pressing down the central core portion 40.
- the sanitary napkin 1B according to the second embodiment forms the back sheet 3 so as to be stretchable in the width direction (WD) by forming a corrugated shaping process on the back sheet 3.
- WD width direction
- the sanitary napkin 1B according to the second embodiment has a force S configured to be stretchable in the width direction (WD) by applying a corrugated shaping process to the back sheet 3, in the present invention.
- the back sheet 3 may be stretchable by providing a non-bonded or weakly bonded folded portion (not shown). In this way, the back sheet 3 is not joined.
- the back sheet 3 can be expanded in the width direction (WD) by the folded amount provided on the back sheet 3 when the core portion 40 is deformed in a concave shape. 40 is easily deformed into a concave shape without being pressed by the back sheet 3.
- the folded portion may be arranged at least at a part on the clothing contact surface side at any position on the clothing contact surface side.
- the back sheet 3 itself which is obtained by simply processing the back sheet 3, is reduced in the width direction (WD) by reducing coiled crimped fibers, stretchable fibers such as urethane, or the fusion point of the back sheet 3. You may use what made it easy to extend to). Further, the fiber orientation may be strengthened in the longitudinal direction (LD) to reduce the tensile strength in the width direction (WD) and to provide stretchability.
- LD longitudinal direction
- a sanitary napkin 1C according to the third embodiment will be described with reference to FIGS. 12A and 12B.
- the sanitary napkin 1C is different from the first embodiment in that a predetermined space 43 is formed between the back sheet 3 and the central core 40.
- the side portion 41 of the absorbent body 4 is folded back to the center side in the width direction (WD) of the absorbent body 4 from the clothing contact surface side, and the thickness of the side portion 41 is reduced.
- a space 43 is formed by increasing the thickness of the central core 40.
- the side portion 41 is folded back to the center side in the width direction (WD) of the absorbent body 4 and the clothing contact surface side so that the thickness of the side portion 41 is the same as that of the central core portion 40.
- the force S that is larger than the thickness and forms the space 43 between the central core portion 40 and the back sheet 3 is not limited to this in the present invention.
- the height in the thickness direction of the side portion 41 may be adjusted by increasing the amount of the side portion 41, and the space portion 43 may be formed between the central core portion 40 and the back sheet 3.
- a space portion 43 may be formed between the central core portion 40 and the back sheet 3 by disposing a member different from the side portion 41 on the clothing contact surface side of the side portion 41.
- the member 44 may be made of the same material as the absorber or may be made of a different material.
- Examples of the material used for the topsheet 2 include a resin film in which a large number of liquid-permeable holes similar to the liquid-permeable region constituting all or part of the topsheet 2 are formed, and a large number of meshes. Examples thereof include a net-like sheet, a liquid-permeable nonwoven fabric, and a woven fabric.
- the resin film net sheet for example, a sheet formed of polypropylene (PP), polyethylene (PE), polyethylene terephthalate (PET), or the like can be used.
- the nonwoven fabric for example, a spunlace nonwoven fabric formed from cellulose fibers such as rayon, synthetic resin fibers, etc., an air-through nonwoven fabric formed from the synthetic resin fibers, etc. can be used.
- As the fiber configuration of the air-through nonwoven fabric in which voids between the fibers are formed inside for example, synthetic fibers of hydrophilic fibers and hydrophobic fibers can be used.
- the surface sheet 2 has a density higher than that of the periphery of a part of the surface sheet 2 and / or a sparse density in the surface sheet 2 itself. It is preferable to provide a material having a dense gradient and a material having a difference in hydrophilicity.
- the intermediate sheet 5 is disposed between the top sheet 2 and the absorbent body 4 and serves as a support for the absorbent body 4 and also provides a liquid-permeable sheet that gives the absorbent body 4 flexibility and shape stability. It is The material used for the intermediate sheet 5 can be the same as that for the top sheet 2 and can be used.
- the intermediate sheet 5 has a sparse / dense gradient in which a part having a higher density than the periphery thereof is disposed in a part of the intermediate sheet 5 or the intermediate sheet 5 itself has a sparse / dense gradient in consideration of the drawability of the liquid. It is preferable to apply a material having a difference in hydrophilicity.
- the absorber 4 is a force obtained by pulverizing kraft pulp and using a tissue 7 in which 3% of a superabsorbent polymer is blended, and is not limited to this.
- the absorbent body 4 is a synthetic fiber made by heat fusion to pulverized pulp. , Blends of air rade, pulp, etc., spun lace made of cotton, rayon, pulp, etc. or a mixture thereof.
- elastic urethane, cellulose sponge, or the like may be used. In the present invention, it is not limited to those listed above or a combination thereof, and any material that is normally used as an absorber may be used.
- the back sheet 3 is made of a material that can prevent excrement absorbed by the absorber 4 from leaking out.
- a moisture-permeable material it is possible to reduce stuffiness at the time of wearing and to reduce discomfort at the time of wearing.
- the back sheet 3 in this embodiment is not limited to this in the present invention using a liquid-impermeable polyethylene (PE) sheet.
- PE polyethylene
- PP polypropylene
- PET polyethylene terephthalate
- EVA resin EVA resin
- a sheet in which fine holes are formed and moisture permeability is added, or a laminate of a resin and paper, or a sheet in which a nonwoven fabric and a resin film are laminated may be used.
- a hydrophobic nonwoven fabric, a water-impermeable plastic film, a laminate sheet portion of a nonwoven fabric and a water-impermeable plastic film, and the like can be used.
- an SMS nonwoven fabric sandwiched between a melt-blown nonwoven fabric having high water resistance or a strong spunbond nonwoven fabric may be used.
- it is preferably a highly stretchable material.
- heat is applied to a water-repellent nonwoven fabric or latent heat-crimped fiber formed of stretchable urethane to form a stretch by forming a coil.
- Use water-repellent treatments that have a water-repellent treatment.
- the adhesive in the adhesive part 8 for preventing misalignment and the adhesive part 9 use a rubber-based hot melt.
- a rubber-based hot melt for example, an olefin-based hot melt, a mechanical fastener, a styrene rubber-based slip Stopper etc. can be used!
- the sanitary napkin 1 is formed using, for example, an embossing device 100 including a pair of embossing rolls 101 and 102 shown in FIGS. Figure 13 and Figure 14 As shown, the embossing rolls 101 and 102 include an upper embossing roll 102 and a lower embossing roll 101. Each of the upper embossing roll 102 and the lower embossing roll 101 rotates at a predetermined rotational speed, and the sanitary napkin 1 applies a predetermined pressure and heat between the upper embossing roll 102 and the lower embossing roll 101.
- the compressed groove 11 in the present embodiment is formed by passing in the state where it is in a dry state.
- the upper embossing roll 102 includes embossed teeth 120 having a pair of squeezed embossed teeth 112 formed in a convex shape.
- the lower embossing roll 101 has a lower embossing pattern including embossing teeth 110 formed in a convex shape.
- a pair of embossed teeth 120 having a pair of squeezed embossed teeth 112 on the side edges are formed in an elliptical shape.
- a recess is formed between the embossed embossed teeth 112, 112, and the embossed teeth 110 can be swallowed.
- the embossing teeth 120 are formed in a convex shape so that a space is provided in a substantially central portion and the central core portion 40 is not crushed. Is not limited to this.
- the embossed teeth 120 may be recessed so that the embossed teeth 120 can be fitted to the embossed teeth 110.
- the lower emboss pattern for example, a convex pattern as shown in FIGS. 16A and 16B can be exemplified.
- the lower embossing pattern has embossed teeth 110 formed in a convex shape, and the embossed teeth 110 force S enters between the pair of squeezed embossed teeth 112 described above so as to be squeezed.
- the embossed teeth 110 are formed in a concavo-convex shape in which a convex portion 110a and a concave portion 110b are continuously formed.
- the high pressing part 12 in the pressing part 11 is formed by this convex part 110a, and the low pressing part 13 is formed by the recessed part 110b.
- the embossing tooth 110 is a force S using a convex-concave shape in which a convex portion 110a and a concave portion 110b are continuously formed, and the present invention is not limited to this.
- the embossed teeth 110 may have a uniform height without any unevenness.
- the squeezed embossed teeth 112 in the present embodiment are a force S using a series of uniform heights having no irregularities, and the present invention is not limited to this.
- a part or the whole of which has different tooth heights that is, a shape in which so-called concave portions and convex portions are continuously provided may be used.
- the squeezed embossed teeth 112 are not continuous but may protrude intermittently.
- the shape of the protrusion 15 in the compressed groove 11 can be easily maintained.
- the upper embossed pattern and the lower embossed pattern are squeezed together with the sanitary napkin 1, so that the compressed portion 11 and the space portion 16 according to the present embodiment are formed.
- the embossing teeth 112 of the upper embossing roll 102 and the embossing teeth 111 of the lower embossing roll 101 are embossed, and the embossing teeth 112 of the embossing embossing 112 are embroidered from the skin contact surface side.
- the compressed portion 11 and the space portion 16 are formed (see FIG. 14).
- the embossing device 100 has a pitch A between the embossing teeth 112 of the upper embossing roll 102 of 37 mm and the interval between the joining portions of the upper embossing roll 102 and the lower embossing roll 101.
- the force S can be applied by using the embossing rolls 101 and 102 that have an E force of 0 mm.
- the pitch A of the embossing teeth 112 of the upper embossing roll 102 is preferably in the range of 20 to 60 mm because the core portion 40 is deformed into a concave shape. More preferably, the range of 30-50 mm can be illustrated.
- the interval B between the upper embossing roll 102 and the lower embossing roll 101 is preferably in the range of 0.3 to 10 mm. More preferably, the range of 0.5-5. Omm can be illustrated.
- the stitching depth C for projecting the protruding portion 15 of the compressed groove 11 upward is preferably in the range of !! to 10 mm. More preferably, the range of 2-6 mm can be illustrated.
- the side wall angle D facing the pressing groove 11 of the upper embossing roll 102 is preferably in the range of 30-120 °. More preferably, the range of 45 to 100 ° can be exemplified.
- a range of 5 to 30 mm is preferable. Than Preferably, a range of 8 to 15 mm can be exemplified.
- a flat surface having no irregularities is formed at the contact position of the lower embossing roll 101 with the embossing teeth 110.
- a manufacturing apparatus using a material that becomes a recess may be used to realize a similar configuration. For example, use materials that change in height when compressed, such as paper and hard rubber.
- the method for producing a sanitary napkin 1 according to the present invention includes a squeezing portion that forms the squeezing portion 11 and the space portion 16 by squeezing the sanitary napkin 1 from the skin contact surface side and the clothing contact surface side.
- an upper mold roll portion including a pair of embossed teeth 120 having a pair of squeezed embossed teeth 112 formed in a predetermined pattern on the surface, and a stagnation formed on the surface in the predetermined pattern.
- the embossing device 100 having a lower mold roll portion formed with the squeezed embossed teeth 111 formed so as to be able to be fitted to the embossed embossed teeth 112, and at least the absorbent article material including the absorbent body 4 in the thickness direction
- the compressed portion 11 and the space portion 16 according to the biological napkin 1 are formed by squeezing into the napkin.
- the sanitary napkin 1 allows the sanitary napkin 1 to pass between the upper mold roll portion having the concave portion and the lower mold roll portion having the convex portion with a predetermined pressure and heat applied.
- Squeezing part 11 projecting to the skin contact surface side on the clothing contact surface side, crease on the skin contact surface side, space portion 16 recessed on the clothing contact surface side, and skin contact surface side Protruding protrusion 15 is formed.
- the absorbent article material including at least the absorbent body 4 is squeezed in the thickness direction (TD) by passing between the upper mold roll part having the concave part and the lower mold roll part having the convex part.
- the squeezing may be continuous or squeezed at a predetermined interval.
- the manufacturing method according to the present invention manufactures at least a part of a liquid-permeable surface sheet disposed on the skin contact surface side and a liquid-impermeable back surface disposed on the clothing contact surface side.
- a sheet and a liquid-retaining absorbent disposed between the top sheet and the back sheet, the absorbent from the clothing contact surface side to the skin clothing contact surface side. Squeezing toward the clothing contact surface side!
- the space portion is an absorbent article formed on both sides or one side of the protruding portion on the skin contact surface side opposite to the compressed portion.
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- Health & Medical Sciences (AREA)
- Epidemiology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Dermatology (AREA)
- Absorbent Articles And Supports Therefor (AREA)
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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EP07832401A EP2087866A4 (en) | 2006-11-22 | 2007-11-22 | ABSORBENT ARTICLE AND PRODUCTION METHOD THEREOF |
US12/515,850 US8173858B2 (en) | 2006-11-22 | 2007-11-22 | Absorptive article and method of producing the same |
JP2008545453A JP5161790B2 (ja) | 2006-11-22 | 2007-11-22 | 吸収性物品及びその製造方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2006316348 | 2006-11-22 | ||
JP2006-316348 | 2006-11-22 |
Publications (1)
Publication Number | Publication Date |
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WO2008062873A1 true WO2008062873A1 (fr) | 2008-05-29 |
Family
ID=39429801
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2007/072672 WO2008062873A1 (fr) | 2006-11-22 | 2007-11-22 | Article absorbant et procédé de production associé |
Country Status (6)
Country | Link |
---|---|
US (1) | US8173858B2 (ja) |
EP (1) | EP2087866A4 (ja) |
JP (1) | JP5161790B2 (ja) |
KR (1) | KR20090080503A (ja) |
CN (1) | CN101541276A (ja) |
WO (1) | WO2008062873A1 (ja) |
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- 2007-11-22 KR KR1020097008289A patent/KR20090080503A/ko active IP Right Grant
- 2007-11-22 WO PCT/JP2007/072672 patent/WO2008062873A1/ja active Application Filing
- 2007-11-22 EP EP07832401A patent/EP2087866A4/en not_active Withdrawn
- 2007-11-22 CN CNA2007800429180A patent/CN101541276A/zh active Pending
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Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
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CN103958756A (zh) * | 2012-02-29 | 2014-07-30 | 花王株式会社 | 无纺布 |
JP2017192648A (ja) * | 2016-04-22 | 2017-10-26 | 王子ホールディングス株式会社 | 吸収性物品の製造装置および吸収性物品の製造方法 |
JP6171118B1 (ja) * | 2016-11-04 | 2017-07-26 | ユニ・チャーム株式会社 | 吸収性物品に係る吸収体の製造方法、及び製造装置 |
WO2018083774A1 (ja) * | 2016-11-04 | 2018-05-11 | ユニ・チャーム株式会社 | 吸収性物品に係る吸収体の製造方法、及び製造装置 |
JP2020018939A (ja) * | 2019-11-12 | 2020-02-06 | 王子ホールディングス株式会社 | 吸収性物品の製造装置および吸収性物品の製造方法 |
WO2022024591A1 (ja) * | 2020-07-28 | 2022-02-03 | 大王製紙株式会社 | 個装吸収性物品、及び個装吸収性物品の製造方法 |
JP7429617B2 (ja) | 2020-07-28 | 2024-02-08 | 大王製紙株式会社 | 個装吸収性物品、及び個装吸収性物品の製造方法 |
WO2023249001A1 (ja) * | 2022-06-20 | 2023-12-28 | ユニ・チャーム株式会社 | 吸収体の製造方法、吸収体の製造装置、及び吸収性物品の製造方法 |
Also Published As
Publication number | Publication date |
---|---|
US8173858B2 (en) | 2012-05-08 |
JP5161790B2 (ja) | 2013-03-13 |
EP2087866A1 (en) | 2009-08-12 |
KR20090080503A (ko) | 2009-07-24 |
JPWO2008062873A1 (ja) | 2010-03-04 |
US20100057031A1 (en) | 2010-03-04 |
CN101541276A (zh) | 2009-09-23 |
EP2087866A4 (en) | 2011-12-28 |
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