WO2005099641A1 - 生理用ナプキン - Google Patents
生理用ナプキン Download PDFInfo
- Publication number
- WO2005099641A1 WO2005099641A1 PCT/JP2005/006750 JP2005006750W WO2005099641A1 WO 2005099641 A1 WO2005099641 A1 WO 2005099641A1 JP 2005006750 W JP2005006750 W JP 2005006750W WO 2005099641 A1 WO2005099641 A1 WO 2005099641A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sanitary napkin
- liquid
- topsheet
- menstrual blood
- barrier material
- 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
- A61F13/534—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 an inhomogeneous composition through the thickness of the pad
- A61F13/537—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 an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer
- A61F13/53704—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 an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer the layer having an inhibiting function on liquid propagation
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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
-
- 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
- A61F13/534—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 an inhomogeneous composition through the thickness of the pad
- A61F13/537—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 an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer
- A61F13/53708—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 an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer the layer having a promotional function on liquid propagation in at least one direction
- A61F13/53713—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 an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer the layer having a promotional function on liquid propagation in at least one direction the layer having a promotional function on liquid propagation in the vertical direction
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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
- A61F13/534—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 an inhomogeneous composition through the thickness of the pad
- A61F13/537—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 an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer
- A61F13/53708—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 an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer the layer having a promotional function on liquid propagation in at least one direction
- A61F13/53717—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 an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer the layer having a promotional function on liquid propagation in at least one direction the layer having a promotional function on liquid propagation in the horizontal direction
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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
- A61F13/534—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 an inhomogeneous composition through the thickness of the pad
- A61F13/537—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 an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer
- A61F13/53743—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 an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer characterised by the position of the layer relative to the other layers
- A61F13/53747—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 an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer characterised by the position of the layer relative to the other layers the layer is facing the topsheet
-
- 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
- A61F2013/530131—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 being made in fibre but being not pulp
- A61F2013/53016—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 being made in fibre but being not pulp having special shape
- A61F2013/530167—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 being made in fibre but being not pulp having special shape being crimped
-
- 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
- A61F13/534—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 an inhomogeneous composition through the thickness of the pad
- A61F2013/53463—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 an inhomogeneous composition through the thickness of the pad with a reinforcing structure, e.g. net
-
- 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
- A61F13/534—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 an inhomogeneous composition through the thickness of the pad
- A61F13/537—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 an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer
- A61F2013/53765—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 an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer characterized by its geometry
-
- 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
- A61F13/534—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 an inhomogeneous composition through the thickness of the pad
- A61F13/537—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 an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer
- A61F2013/53765—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 an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer characterized by its geometry
- A61F2013/53782—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 an inhomogeneous composition through the thickness of the pad characterised by a layer facilitating or inhibiting flow in one direction or plane, e.g. a wicking layer characterized by its geometry with holes
Definitions
- the present invention relates to a sanitary napkin having a high side leakage prevention effect and a high effect of concealing the color of menstrual blood absorbed in a liquid absorbing layer.
- the present invention relates to a sanitary napkin that allows a given liquid to diffuse vertically below a topsheet and quickly absorb the liquid into a liquid absorbing layer.
- Sanitary napkins generally include a liquid-permeable top sheet, a back sheet, and a liquid absorbing layer (absorbing core) disposed between the top sheet and the back sheet.
- the sanitary napkin absorbs menstrual blood quickly and prevents the given liquid from leaking in the horizontal direction!
- the menstrual blood absorbed by the liquid absorbing layer absorbs It is required that it is difficult to return, and it is preferable that the color of menstrual blood absorbed by the liquid absorbing layer is difficult to be seen from the outside.
- surface sheets of various structures and other members disposed between the surface sheet and the liquid absorbing layer have been developed.
- Patent Document 1 discloses a sanitary napkin for the purpose of facilitating the intake of a liquid, improving the function of concealing the color of the liquid by allowing the liquid to return to the surface side of the surface sheet skin, and the like. It has been disclosed. That is, in the sanitary napkin described in Patent Literature 1, the first passage layer (top sheet) located on the skin side surface has large pores with individual pore areas of 1.4 to 3.0 mm 2 .
- the second passage layer which is a fat film and is located below the first passage layer, is formed of a high porosity high loft elastic fiber material. Further, as a structure to be compared with the invention, the same first pass layer is used, but the second pass layer is small, and is replaced by a resin film having holes formed therein. You.
- Patent Document 2 discloses a sanitary napkin in which an aggregate of crunchy fibers is interposed between a topsheet and a liquid absorbing layer.
- the crimp fibers are entangled with each other so as to exhibit a predetermined elastic modulus.
- the presence of the aggregate of crumb fibers between the topsheet and the liquid absorbing layer makes it easier for the sanitary napkin to fit the vaginal opening.
- FIGS. 11 and 12 of Patent Document 3 below show that a sanitary napkin extends in the longitudinal direction.
- a sanitary napkin having a pair of skin contact portions raised toward the wearer's skin.
- a bundle of continuous fibers spread from the TOW is arranged between the topsheet and the liquid absorbing layer in such a manner that the fiber length direction is aligned with the longitudinal direction.
- the pair of skin contact portions that are to be in contact with the crotch of a woman has cushioning properties.
- the menstrual blood is excreted on the skin side surface of the sanitary napkin. It prevents lateral flow and prevents lateral leakage of menstrual blood.
- Patent Document 1 Japanese Patent Publication No. 11-507573
- Patent Document 2 Japanese Patent Application Laid-Open No. 2001-340382
- Patent Document 3 Japanese Patent Application Laid-Open No. 2002-345887
- the liquid permeability of the first passage layer is enhanced by the large aperture, and the second passage layer made of a fiber material is provided between the first passage layer and the liquid absorption layer. It is located. Therefore, when body pressure is applied to the skin-side surface, menstrual blood absorbed in the liquid-absorbing layer easily passes through the second passage layer and returns to the skin-side surface of the first passage layer through a larger opening. . In addition, since menstrual blood can be retained in the space of the second passage layer, the color of the menstrual blood can be seen through a large opening in the first passage layer.
- a resin film having small openings formed as a second passage layer is disposed below the first passage layer. It is considered that the second passage layer makes it possible to make the color of menstrual blood absorbed by the liquid absorbing layer less visible to external force. Under pressure, this second permeable layer also acts as a resistance to menstrual flow after passing through the first permeable layer and toward the liquid absorbing layer. Therefore, menstrual blood stays between the first passage layer and the second passage layer, and menstrual blood that has just stayed there easily spreads along the surface between the first passage layer and the second passage layer. Therefore, it is easy to cause lateral leakage. Furthermore, the retained menstrual blood tends to return to the skin-side surface of the first passage layer through the large opening.
- the aggregate of crunchy fibers is formed on the skin side.
- the aggregate of crumb fibers provided under the topsheet has a relatively high viscosity that has passed through the topsheet, and acts to cut off the menstrual aggregates by the crumb fibers, resulting in menstrual fluid There is a concern that it will move toward the absorption layer.
- the pair of skin ridges is provided so as to guide menstrual blood along the groove located therebetween.
- the individual skin abutments are not necessarily made to enhance the effect of transferring menstrual blood to the liquid absorbing layer while applying force.
- the present invention solves the above-mentioned conventional problems, and can take in menstrual blood having a relatively high viscosity at a high speed and force, prevent diffusion in the lateral direction, and conceal the color of menstrual blood. With the aim of providing sanitary napkins!
- the present invention provides a liquid-permeable topsheet facing the wearer's vaginal opening
- a sanitary napkin having a liquid absorbing layer disposed between the top sheet and the back sheet,
- a plurality of barrier materials are further provided between the topsheet and the liquid absorbing layer, and each of the barrier materials extends in the longitudinal direction of the sanitary napkin, has a flat cross section, and has a main surface.
- One of which is directed to the topsheet and is made of synthetic resin,
- the barrier material is overlapped so as to remain between the void force S barrier material and communicate with the liquid absorbing layer.
- the barrier materials are not connected to each other.
- the barrier material provided below the topsheet prevents the liquid from returning to the topsheet, and the color of menstrual blood absorbed by the liquid absorption layer. It functions as a mask. Further, due to the gaps between the barrier materials extending in the vertical direction, menstrual blood that has passed through the surface sheet is vertically absorbed along the gaps and absorbed into the liquid absorbing layer. Therefore, menstrual blood can be promptly transferred to the liquid absorbing layer. This is also next to menstrual blood It prevents diffusion in the direction and enhances the effect of preventing menstrual blood from leaking laterally.
- each of the barrier materials since at least the skin-side surface of each of the barrier materials is made of a resin, it can exhibit elastic restoring force when deformed by body pressure. Therefore, the gap is maintained so that menstrual blood can pass.
- the noir material is partially bonded to the topsheet.
- the barrier material is less likely to be displaced under the topsheet. Therefore, the voids are appropriately dispersed in the barrier material laminate, and the menstrual blood permeability can be effectively maintained.
- the barrier material is meandering or crimped so that the voids are appropriately dispersed in the barrier material laminate.
- the flat cross section of the barrier material has a width of 0.1 to 5 mm and a thickness of 0.02 to 3.0 mm.
- the topsheet has a skin-side surface made of a resin and a plurality of liquid permeable holes, and a flat cross section of the barrier material has a width dimension corresponding to the sanitary size of the liquid permeable holes.
- Napkin The napkin is smaller than the hole size measured in the lateral direction. In this structure, menstrual blood can be easily transferred from the topsheet to the liquid absorbing layer because the liquid permeable holes are not completely closed by the norier layer.
- the barrier material is preferably whitened.
- the sanitary napkin and each element have two main surfaces, of which the surface worn toward the crotch of the wearer is referred to as “skin-side surface”, and the opposite surface is referred to as “clothes-side surface”. It is called “surface”.
- FIG. 1 is a plan view showing the sanitary napkin 1 according to the first embodiment of the present invention with the skin side surface facing forward
- FIG. 2 is a cross-sectional view taken along line II-II of FIG. 1
- FIG. 4 is a partial perspective view schematically showing how the sheet and the barrier material are arranged on the liquid absorbing layer.
- FIG. 4 is a partially enlarged view of FIG.
- the sanitary napkin 1 has a longitudinal center line Oy which is long in the Y direction (longitudinal direction). It has a main body part that is symmetrical through the left and right.
- the body has a leading edge la and a trailing edge lb, each of which curves (projects) back and forth.
- the wings 2 and 2 protrude outward from both left and right sides of the main body.
- the wings 2 and 2 are provided at a position closer to the front edge la than the rear edge lb which is not concentric with the horizontal center line Ox.
- the main body includes a front right edge lc and a front left edge Id in front of the wings 2 and 2, and a rear right edge le and a rear left rim behind the wings 2 and 2. Has If.
- the sanitary napkin 1 is basically composed of a liquid-permeable surface sheet 5 that appears on the skin-side surface of the sanitary napkin 1, and a liquid that appears on the clothing-side surface of the sanitary napkin 1. It comprises a back sheet 6 having a barrier property, and a liquid absorbing layer 7 disposed between the top sheet 5 and the back sheet 6. As shown by the broken line in FIG. 1, the liquid absorbing layer 7 curves (projects) forward and separates inwardly from the leading edge la of the sanitary napkin 1, and curves (projects) backward to remove the physiological And a trailing edge 7b inwardly spaced from the trailing edge lb of the napkin 1.
- the liquid absorbing layer 7 includes a right edge 7c which is spaced inward from the front right edge lc and the rear right edge le of the sanitary napkin 1, and a front left edge Id and a rear left edge of the sanitary napkin 1. And a left edge 7d inwardly spaced from the If. Outside the liquid absorption layer 7, the top sheet 5 and the back sheet 6 are bonded with a hot melt adhesive.
- an additional liquid impermeable side sheet is provided on the skin side surface of the sanitary napkin 1 at a predetermined distance from the longitudinal center line Oy to cover both left and right sides. It may be.
- the side sheet may form a leak-proof wall (cuff) that extends in the vertical direction and rises from the skin-side surface.
- a region surrounded by a broken line is referred to as a main liquid receiving region 10.
- the main liquid receiving region 10 is symmetric with respect to both the vertical center line Oy and the horizontal center line Ox, and has a length dimension L1 and a width dimension W1.
- the noir material 11 is disposed between the top sheet 5 and the liquid absorbing layer 7.
- the barrier material 11 is a strip of a resin film having a width dimension of Wa and extending continuously over a length dimension L 1 of the main liquid receiving region 10. If necessary, each of the coating materials 11 may be shorter than the length L1 of the main liquid receiving region 10.
- the yarn material 11 is provided between the topsheet 5 and the liquid absorbing layer 7 to form a sanitary napkin 1. In the z direction (thickness direction). Unless otherwise specified, the stacked glues 11 are joined together and remain in a state.
- a large number of voids 12 are formed between the glue materials 11. Since the individual barrier materials 11 extend in the Y direction as a whole! / ⁇ , the individual voids 12 are also elongated in the Y direction.
- the gap 12 provides a route for menstrual blood to transfer from the topsheet 5 to the liquid absorbing layer 7.
- a part of the gap 12 provides a through-hole penetrating the laminate of the glue material 11 in the Z direction, and allows direct transfer of menstrual blood from the topsheet 5 to the liquid absorbing layer 7. It is possible. More specifically, as shown in FIG.
- each glue material 11 is a meandering strip in which a curved portion (projection) 11a is repeated at random in the Y direction instead of a straight strip parallel to the Y direction. It is.
- the curved portion 11a helps to increase the porosity due to the gap 12.
- each barrier material 11 is in the range of 0.1 to 5. Omm, preferably in the range of 0.5 to 3. Omm. When it is within the above range, the barrier material 11 does not inhibit the transfer of menstrual blood from the topsheet 5 to the liquid absorbing layer 7.
- each barrier material 11 is in the range of 0.02 to 3.0 mm, preferably 0.5 to 2.0 mm.
- the barrier material 11 When body pressure acts on the skin-side surface of the sanitary napkin 1, the barrier material 11 may be deformed and the void 12 may disappear. However, when the thickness of each barrier material 11 is within the above range, when the body pressure is relaxed, the deformed barrier material 11 tends to return to its original state due to elastic restoring force.
- the porosity of the laminate of No. 11 is in the range of 20% or more and less than 100%.
- the height of the laminate of the glue material 11 is in the range of 0.5 to LOmm, preferably in the range of 2 to 7 mm.
- the menstrual blood having high viscosity that has passed through the topsheet 5 passes through the voids 12 in a coagulated state, and the liquid absorbing layer 7 Can be reached. Further, when the porosity of the voids 12 is within the above range, menstrual blood that has passed through the topsheet 5 easily reaches the liquid absorbing layer 7 through the barrier material 11.
- the main liquid receiving area 10 When the sanitary napkin 1 is worn on the crotch of a woman, the main liquid receiving area 10
- the length L1 and the width W1 of the main liquid receiving area 10 are determined so as to easily face the vaginal opening.
- the preferred range of the length dimension L1 is (but not limited to) 40 to 70 mm
- the preferred range of the width dimension W1 is (not limited to 20 to 30 mm force). It is.
- Thermoplastic resin materials suitable for the above-mentioned noori material 11 include LLDPE (linear low-density polyethylene), LDPE (low-density polyethylene), HDPE (high-density polyethylene), PP (polypropylene), Mitsui Includes, but is not limited to, Tuffmer (registered trademark) manufactured by Yidakaku Co., Ltd., and a mixture thereof. These resin materials may also be combined to form a multilayer film.
- the resin film may be whitened by kneading an inorganic filler such as titanium oxide, barium sulfate, or calcium carbonate in the range of 10 to 40% by mass into the resin material.
- the resin material used for the glue material 11 may be provided with openings.
- the resin material used for the barrier material 11 may be subjected to a hydrophilic treatment by giving an ester-based hydrophilic agent in an amount of 0.1 to 2.5% by mass.
- the barrier material 11 is manufactured, for example, by the method shown in FIG.
- a film 20 having a predetermined width is formed by shifting the resin material, and one or a plurality of films are stacked and supplied between the pair of cutting rolls 21 and 21 to form a large number of strips (barrier material 11). ) ⁇ This is cut. After cutting [Nip P-Pole 22, 22 and J Nip P-Pole 23, 23 [Pinch] and strip is sent out.
- the peripheral speed of the nip rolls 23, 23 on the downstream side is made faster than the peripheral speed of the nip rolls 22, 22 on the upstream side, a strip is formed between the nip rolls 22, 22 and the nip rolls 23, 23.
- a tension is applied and released from the tension after passing through the nip rolls 23, 23. By this step, the barrier members 11 can be separated so that they do not adhere to each other.
- the cutting rolls 21 and 21 may have meandering cutting blades (not shown) on the roll surface. That is, the individual cutting blades can be arranged around the entire circumference of the cutting rolls 21 and 21 so that the edges meander when viewed from the direction perpendicular to the roll surface. Alternatively, straighten the film using cutting rolls 21, 21
- the individual barrier members 11 can also be formed in a meandering shape by cutting into strips having a shape like that, and thereafter receiving and applying tension with a nip roll several times.
- the barrier material 11 stretches the synthetic resin film and tears in a direction perpendicular to the stretching direction.
- the resin film is stretched and torn by water jet pressure or hot air pressure. It can also be manufactured by, for example, tearing with the tension exerted by the rolls supplied and fed between a pair of embossing rolls interlocked with each other.
- the topsheet 5 is formed of an open synthetic resin film, that is, a synthetic resin film in which many liquid permeable holes 5a are arranged regularly or randomly. Being done.
- each liquid permeation hole 5a has an opening diameter (opening size) Dx, It is measured in the X direction (transverse direction Z transverse direction) of the sanitary napkin 1 and is preferably larger than the width dimension Wa of each barrier material 11.
- the width dimension Wa of each of the noir materials 11 is smaller than the opening diameter Dx, the gap 12 appears in each liquid permeation hole 5a.
- the liquid permeation hole 5a is substantially circular.
- the liquid permeation hole 5a may be an elliptical shape elongated in the X direction.
- a resin film having a predetermined opening area ratio is stretched by liquid permeation holes each having a predetermined opening area to increase both the opening area and the opening area ratio of each, and the stretching direction is changed. It can be arranged on the barrier material 11 in the X direction.
- Such a topsheet 5 is convenient for increasing the opening diameter Dx of the liquid permeation hole 5a as compared with the width dimension Wa of the barrier material 11.
- the width dimension Wa may be larger than the opening diameter Dx. Even in this case, menstrual blood can be transferred from the topsheet 5 to the liquid absorbing layer 7 as long as the barrier material 11 is subjected to the hydrophilic treatment.
- the resin film used for the topsheet 5 is formed of the same resin material as the above-mentioned barrier material 11, and is subjected to whitening treatment and hydrophilic treatment similarly to the barrier material 11. You.
- the opening diameter Dx of each liquid permeation hole 5a of the topsheet 5 is in the range of 0.3 to 6.0 mm, preferably in the range of 1.0 to 3.0 mm.
- the open area ratio of the topsheet 5 due to the liquid permeation holes 5a is It is 10 to 60%, preferably 20 to 50%.
- the liquid permeable holes 5a can be formed by a perforation method in which a resin film is softened on a substrate having a large number of holes and air is sucked from the back side of the substrate.
- a perforation method as shown in FIG. 4, each of the transmission holes 5a gradually narrows toward the non-roller material 11, and the clothing side surface force of the resin film protrudes the ring (short cylindrical shape). Body) 5b is formed.
- some of the glue materials 11 are bonded to the topsheet 5.
- a barrier material 11 in stripes or hot melt adhesive which is coated in a spiral shape extending in the transverse direction in the range of L ⁇ 10gZm 2 so as not to interfere with the migration of the liquid Glued.
- the topsheet 5 may be a sheet having embossed portions arranged in a dot shape by being heated and press-bonded to the laminate of the barrier material 11 under pressure and heat. Such hot embossing is a force that also leads to the partial bonding of the barrier materials 11 overlapping in the Z direction. A sufficient gap can still be left between the nori materials 11 by applying a suitable emboss pattern or the like.
- the embossed portion occupies 1 to 40%, preferably 1 to 15% of the area (L 1 ⁇ W 1) of the main liquid receiving region 10.
- the area of each embossed portion is 1.75 to 28.26 mm 2 , preferably 7 to 19 mm 2 .
- the back sheet 6 is formed of a liquid barrier sheet such as a PE (polyethylene) resin film.
- the liquid absorbing layer 7 is formed by wrapping a mixture of ground pulp and a superabsorbent polymer (SAP) with a tissue paper. Liquid absorbent layer 7 for laminate Roh rear member 11, so as not to interfere with the migration of the liquid, 1: in the range of LOgZm 2 are adhered by coating hot melt adhesive, Ru.
- the back sheet 6 is also bonded to the liquid absorbing layer 7 with a hot melt type adhesive.
- the sanitary napkin 1 When worn, the sanitary napkin 1 is placed on the inner surface of the crotch portion of the underwear, and the pressure-sensitive adhesive layer provided on the clothing-side surface (the back sheet 6) of the sanitary napkin 1 body is used for the sanitary napkin 1. It is fixed to the crotch.
- the wings 2 and 2 are folded back, and are adhered to the outer surface of the crotch of the underwear by a pressure-sensitive adhesive layer provided on the clothing side surface (back sheet 6) of the wings 2 and 2.
- the main liquid receiving area 10 faces the vaginal opening, and the menstrual blood from which the vaginal loci have been discharged is mainly given to the main liquid receiving area 10. . Since the voids 12 appear in each of the liquid permeation holes 5a, menstrual blood can be easily transferred to the skin-side surface force liquid absorbing layer 7 of the topsheet 5.
- the gap 12 is elongated in the Y direction, the gap 12 promotes diffusion of menstrual blood in the Y direction. In this way, lateral leakage from the sanitary napkin 1 is prevented by menstrual blood moving in the X direction.
- the barrier material 11 is stacked to form a multilayer structure, so that the liquid absorbing layer 7 absorbs Blood can be effectively prevented from returning to the skin-side surface of the topsheet 5. Further, the liquid permeation hole 5a which gradually narrows toward the noir material 11 and forms the ring 5b is less likely to cause menstrual backflow. This also contributes to preventing menstrual blood from returning to the skin side surface of the topsheet 5.
- the surface sheet 5 and the barrier material 11 are whitened, and the liquid material 11 is located below the liquid permeable holes 5a of the surface sheet 5, so that the surface sheet 5 and the barrier material 11 are absorbed by the liquid absorption layer 7. It is difficult to see the color of menstrual blood from outside.
- FIG. 5 and FIG. 6 are enlarged sectional views showing modified examples of the sanitary napkin of the first embodiment.
- FIG. 5 shows that the central region Wx (that is, the region whose width in the X direction about the longitudinal center line Oy is Wx) has the same width as the sanitary napkin 1 of the first embodiment.
- the figure shows a sanitary napkin 1A on which a Nore material 11 of dimension Wa is arranged.
- narrower barrier materials 11c having widths in the range of 1Z4 to 3Z4 of the width dimension Wa of the glue material 11 are arranged.
- the basis weight of the glue material 11 arranged in the central area Wx is equal to or slightly smaller than the basis weight of the glue material 11c outside the central area Wx. Therefore, the individual voids 12a outside the central region Wx tend to be smaller than the individual voids 12 in the central region Wx.
- FIG. 6 shows a sanitary napkin 1B in which a barrier material ib is provided between the topsheet 5 and the liquid absorbing layer 7.
- the barrier material l ib has the same width dimension.
- the outer periphery of the central area Wx is higher than the weight of the barrier material l ib arranged in the central area Wx.
- the volume ratio of the space 12d to the space between the clothing side surface and the skin side surface of the liquid absorbing layer 7 is larger than that.
- menstrual blood can more quickly reach the liquid absorbing layer 7 in the central region Wx.
- prevention of menstrual blood from returning from the liquid absorbing layer 7 to the topsheet 5 is more effective.
- the width dimension Wx is in the range of 10 to 50 mm, preferably in the range of 15 to 35 mm.
- FIGS. 7 and 8 show another embodiment of the barrier material.
- FIG. 7 shows a glue material 111, which is made of a resin material similar to the buyer material 11 and has a crimped portion 11 la.
- the crimped barrier material 111 easily forms voids in the laminate.
- FIG. 8 (A) shows a resin film layer 112a that has been whitened and hydrophilically treated in the same manner as the barrier material 11 of the above-described embodiment, and is superposed and joined to the resin film layer 112a.
- the figure shows a glue material 112 composed of a fiber layer 112b.
- the glue material 112 is arranged with the resin film layer 112a facing the topsheet 5.
- FIG. 8 (B) shows a glue material 113 in which a fiber layer 113b similar to the fiber layer 112b is sandwiched and joined between the resin film layers 113a and 113a similar to the resin film layer 112a.
- the fiber layers 112b and 113b are hydrophilic nonwoven fabrics, and are bonded to the resin film layers 112a and 113a by adhesion and heat fusion.
- the fibrous layers 112b and 113b can be made to have a dot-shaped embossed portion which is thermally fused to the resin film layers 112a and 113a.
- Fibers suitable for the fiber layers 112b and 113b are synthetic resin fibers that have been subjected to hydrophilic treatment such as PE, PP, and PET (polyethylene terephthalate).
- the fiber layers 112b and 113b may further include cellulosic fibers. As shown in FIGS.
- hydrophilic fiber layers 112b and 113b appear on the side edges of the barrier materials 112 and 113, so that they pass through the liquid permeable holes 5a of the topsheet 5. Menstrual blood is strongly attracted to the gap between adjacent barrier materials.
- the various glue materials of the above embodiments may be mixed with each other, or may be distributed to different places.
- FIG. 10 is a plan view showing a sanitary napkin 40 having another structure of the present invention.
- the sanitary napkin 40 further includes longitudinal compression grooves 41, 41 overlapping the left and right sides of the main liquid receiving area 10 in which the above-mentioned noir material 11 is present, and is separated from the front and rear of the main liquid receiving area 10. It has located lateral compression grooves 42,42.
- FIG. 1 is a plan view showing a sanitary napkin according to a first embodiment of the present invention
- FIG. 2 is a cross-sectional view of the sanitary napkin shown in FIG.
- FIG. 3 is a partial perspective view schematically showing how a topsheet and a barrier material are arranged on a liquid absorbing layer.
- FIG. 4 A partially enlarged view of FIG. 2,
- FIG. 5 is an enlarged sectional view showing a modification of the sanitary napkin shown in FIG. 1.
- FIG. 6 is an enlarged sectional view showing another modified example of the sanitary napkin shown in FIG. 1.
- FIG. 7 is an enlarged perspective view showing another embodiment of the barrier material.
- FIG. 8 (A) and (B) are enlarged perspective views showing another embodiment of the barrier material.
- FIG. 9 is a diagram schematically showing an example of a manufacturing process of a barrier material.
- FIG. 10 is a plan view showing a sanitary napkin having another structure of the present invention.
Landscapes
- 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)
- Absorbent Articles And Supports Therefor (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004-119855 | 2004-04-15 | ||
JP2004119855A JP4738754B2 (ja) | 2004-04-15 | 2004-04-15 | 生理用ナプキン |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005099641A1 true WO2005099641A1 (ja) | 2005-10-27 |
Family
ID=35097223
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/006750 WO2005099641A1 (ja) | 2004-04-15 | 2005-04-06 | 生理用ナプキン |
Country Status (4)
Country | Link |
---|---|
US (1) | US20050234418A1 (ja) |
JP (1) | JP4738754B2 (ja) |
TW (1) | TW200534832A (ja) |
WO (1) | WO2005099641A1 (ja) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7976525B2 (en) * | 2008-02-13 | 2011-07-12 | Kimberly-Clark Worldwide, Inc. | Compound absorbent article with improved body contact |
US8551064B2 (en) * | 2008-06-17 | 2013-10-08 | The Procter & Gamble Company | Absorbent article |
JP5431979B2 (ja) * | 2010-01-13 | 2014-03-05 | 花王株式会社 | 生理用ナプキン |
IT1403062B1 (it) * | 2010-06-15 | 2013-10-04 | Gdm Spa | Metodo di piegatura di assorbenti igienici. |
KR102164191B1 (ko) | 2017-03-31 | 2020-10-12 | 킴벌리-클라크 월드와이드, 인크. | 삼출물 관리층을 구비한 흡수 용품 |
WO2018183651A1 (en) | 2017-03-31 | 2018-10-04 | Kimberly-Clark Worldwide, Inc. | Absorbent article with an exudate management layer |
GB2574985B (en) | 2017-03-31 | 2022-09-07 | Kimberly Clark Co | Absorbent article with an exudate management layer |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59228001A (ja) * | 1983-05-17 | 1984-12-21 | ユニ・チヤ−ム株式会社 | 吸収物品 |
JPH05154175A (ja) * | 1991-12-04 | 1993-06-22 | Uni Charm Corp | 体液吸収性物品 |
JPH0582421U (ja) * | 1992-04-06 | 1993-11-09 | 花王株式会社 | 吸収性物品 |
JPH08164159A (ja) * | 1994-12-13 | 1996-06-25 | Uni Charm Corp | 体液吸収性物品 |
-
2004
- 2004-04-15 JP JP2004119855A patent/JP4738754B2/ja not_active Expired - Fee Related
-
2005
- 2005-03-21 TW TW094108632A patent/TW200534832A/zh unknown
- 2005-04-01 US US11/097,522 patent/US20050234418A1/en not_active Abandoned
- 2005-04-06 WO PCT/JP2005/006750 patent/WO2005099641A1/ja active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59228001A (ja) * | 1983-05-17 | 1984-12-21 | ユニ・チヤ−ム株式会社 | 吸収物品 |
JPH05154175A (ja) * | 1991-12-04 | 1993-06-22 | Uni Charm Corp | 体液吸収性物品 |
JPH0582421U (ja) * | 1992-04-06 | 1993-11-09 | 花王株式会社 | 吸収性物品 |
JPH08164159A (ja) * | 1994-12-13 | 1996-06-25 | Uni Charm Corp | 体液吸収性物品 |
Also Published As
Publication number | Publication date |
---|---|
JP2005296481A (ja) | 2005-10-27 |
JP4738754B2 (ja) | 2011-08-03 |
TW200534832A (en) | 2005-11-01 |
US20050234418A1 (en) | 2005-10-20 |
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