CA2021239C - Disposable absorbent articles - Google Patents
Disposable absorbent articles Download PDFInfo
- Publication number
- CA2021239C CA2021239C CA002021239A CA2021239A CA2021239C CA 2021239 C CA2021239 C CA 2021239C CA 002021239 A CA002021239 A CA 002021239A CA 2021239 A CA2021239 A CA 2021239A CA 2021239 C CA2021239 C CA 2021239C
- Authority
- CA
- Canada
- Prior art keywords
- liquid
- flaps
- section
- topsheet
- sheet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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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
- A61F13/45—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
- A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
- A61F13/494—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means
- A61F13/49406—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means the edge leakage prevention means being at the crotch region
- A61F13/49413—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means the edge leakage prevention means being at the crotch region the edge leakage prevention means being an upstanding barrier
- A61F13/4942—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means the edge leakage prevention means being at the crotch region the edge leakage prevention means being an upstanding barrier the barrier not being integral with the top- or back-sheet
-
- 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
- A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
- A61F13/49007—Form-fitting, self-adjusting disposable diapers
- A61F13/49009—Form-fitting, self-adjusting disposable diapers with elastic means
- A61F13/4902—Form-fitting, self-adjusting disposable diapers with elastic means characterised by the elastic material
- A61F2013/49031—Form-fitting, self-adjusting disposable diapers with elastic means characterised by the elastic material being elastic in 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
- A61F13/45—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
- A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
- A61F2013/49068—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterized by the shape of the outline
- A61F2013/49076—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterized by the shape of the outline as "I"-shaped
-
- 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
- A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
- A61F2013/49088—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterized by the leg opening
-
- 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
- A61F13/49—Absorbent articles specially adapted to be worn around the waist, e.g. diapers
- A61F13/494—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means
- A61F2013/4948—Absorbent articles specially adapted to be worn around the waist, e.g. diapers characterised by edge leakage prevention means the edge leakage prevention means being elastic
-
- 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
- A61F2013/51002—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 with special fibres
- A61F2013/51038—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 with special fibres being a mixture of fibres
- A61F2013/5104—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 with special fibres being a mixture of fibres with pulp and polymeric fibres
-
- 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
- A61F2013/51002—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 with special fibres
- A61F2013/51038—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 with special fibres being a mixture of fibres
- A61F2013/51042—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 with special fibres being a mixture of fibres with hydrophobic and hydrophilic fibres
-
- 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
- A61F2013/51059—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 being sprayed with chemicals
- A61F2013/51066—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 being sprayed with chemicals for rendering the surface hydrophilic
-
- 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
- A61F13/51401—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by the material
- A61F2013/51409—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by the material being a film
- A61F2013/51411—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by the material being a film being impervious to fluids but not for air or vapours
-
- 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
- A61F2013/530007—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 from pulp
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
- A61F2013/530481—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having superabsorbent materials, i.e. highly absorbent polymer gel materials
- A61F2013/530489—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium having superabsorbent materials, i.e. highly absorbent polymer gel materials being randomly mixed in with other material
Abstract
A disposable absorbent article having a topsheet, a backsheet, an absorbent core, first flaps and second flaps.
Each of second flaps is connected to the first flap and has a section branching upward and a section extending outward.
The branching section is partially elastic. The extending section is so constructed as to be liquid-absorbent on its top surface (Fig. 2).
Each of second flaps is connected to the first flap and has a section branching upward and a section extending outward.
The branching section is partially elastic. The extending section is so constructed as to be liquid-absorbent on its top surface (Fig. 2).
Description
., DISPOSABLE ABSORBENT ARTICLES
' BACKGROUND OF' TIi:E INVENTION
The present invention relates to disposable absorbent articles and, more particularly, to such articles, for example, disposable diapers comprising a liquid-permeable topsheet, a liquid-impermeable backsheet, an absorbent core sandwiched between the top- and backsheets, first flaps outwardly extending from opposite side edges of the absorbent core, respectively, and second flaps connected to the associated first, flaps, each of said second flaps comprising a section branching upward from top surface of the associated first flap and being partially elastic so as to serve as a liquid barrier, on one hand, and a section extending outward from the branching line, on the other hand.
It has already been proposed, for example, by Japanese Patent Application Disclosure Gazettes Nos. 1984-25741 and 1987-25020 to provide an absorbent article not only with elastic flaps extending outward from opposite side edges thereof but also with additional flaps rising from the top surface of the absorbent article at the locations inside said opposite side edges, said additional flaps serving as liquid barriers and being partially elastic, so that these additional flaps may substantially prevent any quan'ti'ty of urine from flowing out of the absorbent article, confining the quantity of urine inside these flaps.
Such arrangement is certainly effective for prevention of urinary leakage but disadvantageous in that the quantity of urine confined in a space between the additional flaps and gathers of the outer extending elastic flaps often causes skin diseases such as eczema and eruption because no liquid absorbing component is present in said space and the wearer's skin is kept contact with said quantity of urine confined therein.
It is an object of the invention to provide disposable absorbent article having flaps branching upward and partially elastic so as to serve as liquid barriers, said flaps being provided on the top surface of the sections horizontally extending outward from the respective branching lines with liquid absorbency and thereby to eliminate the above-mentioned inconvenience.
SUMMARY OF THE INVENTION
The object set forth above is achieved, in accordance with the present invention, by a disposable absorbent article comprising a liquid-permeable topsheet, a liquid-impermeable backsheet, an absorbent core sandwiched between said topsheet and said backsheet, first flaps outwardly extending from opposite side edges of the absorbent core, respectively, and second flaps connected to the associated first flaps, each of said second flaps comprising a first section extending upward from a top surface of the associated first flap and being partially elastic so as to serve as a liquid barrier, and a second section extending outward from a lower portion of the associated first section, said second section being provided on a top surface thereof with a liquid-absorbent material.
Also in accordance with the present invention, there is provided a disposable liquid absorbing article comprising (A) liquid-permeable topsheet, (B) a liquid-impermeable backsheet, (C) an absorbent core sandwiched between said top- and backsheets, (D) a first set of flaps formed from said topsheet and said backsheet extending laterally outwardly from opposite side edges of the absorbent core, and (E) a second set of flaps which is formed from material separate from the materials forming said topsheet and said backsheet, each of said second flaps being connected to one of each of said first flaps, each of said second flaps comprising (a) a first section which is formed from material separate from the material forming said topsheet and which extends upwardly from the surface of each first flap and being partially elastic so as to serve as a moisture-permeable liquid barrier, and (b) a second section which is also formed from material separate from the material forming said topsheet extending laterally outward from the lower portion of each said first section, each second section comprising (i) a lower sheet-like layer made of liquid-impermeable and moisture-permeable material, and (ii) an upper sheet-like layer that is liquid absorbent and adapted to be in contact with the wearer's skin.
' BACKGROUND OF' TIi:E INVENTION
The present invention relates to disposable absorbent articles and, more particularly, to such articles, for example, disposable diapers comprising a liquid-permeable topsheet, a liquid-impermeable backsheet, an absorbent core sandwiched between the top- and backsheets, first flaps outwardly extending from opposite side edges of the absorbent core, respectively, and second flaps connected to the associated first, flaps, each of said second flaps comprising a section branching upward from top surface of the associated first flap and being partially elastic so as to serve as a liquid barrier, on one hand, and a section extending outward from the branching line, on the other hand.
It has already been proposed, for example, by Japanese Patent Application Disclosure Gazettes Nos. 1984-25741 and 1987-25020 to provide an absorbent article not only with elastic flaps extending outward from opposite side edges thereof but also with additional flaps rising from the top surface of the absorbent article at the locations inside said opposite side edges, said additional flaps serving as liquid barriers and being partially elastic, so that these additional flaps may substantially prevent any quan'ti'ty of urine from flowing out of the absorbent article, confining the quantity of urine inside these flaps.
Such arrangement is certainly effective for prevention of urinary leakage but disadvantageous in that the quantity of urine confined in a space between the additional flaps and gathers of the outer extending elastic flaps often causes skin diseases such as eczema and eruption because no liquid absorbing component is present in said space and the wearer's skin is kept contact with said quantity of urine confined therein.
It is an object of the invention to provide disposable absorbent article having flaps branching upward and partially elastic so as to serve as liquid barriers, said flaps being provided on the top surface of the sections horizontally extending outward from the respective branching lines with liquid absorbency and thereby to eliminate the above-mentioned inconvenience.
SUMMARY OF THE INVENTION
The object set forth above is achieved, in accordance with the present invention, by a disposable absorbent article comprising a liquid-permeable topsheet, a liquid-impermeable backsheet, an absorbent core sandwiched between said topsheet and said backsheet, first flaps outwardly extending from opposite side edges of the absorbent core, respectively, and second flaps connected to the associated first flaps, each of said second flaps comprising a first section extending upward from a top surface of the associated first flap and being partially elastic so as to serve as a liquid barrier, and a second section extending outward from a lower portion of the associated first section, said second section being provided on a top surface thereof with a liquid-absorbent material.
Also in accordance with the present invention, there is provided a disposable liquid absorbing article comprising (A) liquid-permeable topsheet, (B) a liquid-impermeable backsheet, (C) an absorbent core sandwiched between said top- and backsheets, (D) a first set of flaps formed from said topsheet and said backsheet extending laterally outwardly from opposite side edges of the absorbent core, and (E) a second set of flaps which is formed from material separate from the materials forming said topsheet and said backsheet, each of said second flaps being connected to one of each of said first flaps, each of said second flaps comprising (a) a first section which is formed from material separate from the material forming said topsheet and which extends upwardly from the surface of each first flap and being partially elastic so as to serve as a moisture-permeable liquid barrier, and (b) a second section which is also formed from material separate from the material forming said topsheet extending laterally outward from the lower portion of each said first section, each second section comprising (i) a lower sheet-like layer made of liquid-impermeable and moisture-permeable material, and (ii) an upper sheet-like layer that is liquid absorbent and adapted to be in contact with the wearer's skin.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is an unfolded plan view of diaper as an example of the article constructed according to the present invention;
FIG. 2 is a sectional view taken along a line II-II in FIG. 1;
FIG. 3 is a sectional view similar to FIG. 2 illustrating another embodiment;
FIG. 4 is a sectional view similar to FIG. 2 illustrating further another embodiment;
FIG. 5 is a sectional view similar to FIG. 2 illustrating still another embodiment.
PREFERRED EMBODIMENT OF THE INVENTION
The present invention will be described by way of - 3a -~~~~~.~<i~
a example, as embodiment in disposable diaper, in reference with the accompanying drawings.
Referring to Figs. 1 and 2, diaper 1 comprises a liquid-permeable topsheet 2 adapted to be in contact with the wearer's skin when it is put on, a liquid-impermeable backsheet 3 adapted to be not in contact with the wearer's skin, a liquid absorbent core 4 sandwiched betureen these two sheets 2, 3, first flaps 5 extending outward from respective side edges of said core, and second flaps 7 connected to outer edges 8 of the respective first flaps and having elastic members 6.
Each of the second flaps 7 is a combined sheet of a liquid absorbent sheet 9 and a liquid-impermeable and moisture-permeable sheet 10 so that such combined sheet totally serves as a liquid barrier. One end of the second flap 7 is folded back to form a sleeve 11 and the remainder of the flap 7, i.e., a section defined by 'the sleeve 11 extends outward from the sleeve 11, a section 13 thereof having liquid absorbency on its top surface. An elastic member 6 doubled into a cross-section of inverted U-shape is mounted within the sleeve 11 so as to be elastic longitudinally of the latter and thereby to provide 'the sleeve 11 with longitudinal elasticity. Specifically, the sleeve 11 is maintained in its upright posture under its contractile force. Longitudinally opposite ends 14 of the ., sleeve 11 are often collapsed inward and bonded onto the associated first flap. Tt is also possible that said opposite Cnds are collapsed outward and bonded onto the outer section 13 of the second flap or that the one end 14 is collapsed inward and bonded onto the first flap while the other end 14 is collapsed outward and bonded onto the outer.
section 13 of the second flap.
With an embodiment illustrated in Fig. 3, the second flap 7 comprises one end rolled around the elastic member 6, the upwardly branching section 11a and the section 13a provided on its top surface with liquid absorbency.
With an embodiment illustrated Fig. 4, the second flap 7 comprises one end sandwiching the elastic member 6 between the both sheets 9, 10, the upwardly branching section 11b and the section 13b having liquid absorbency on its top surface .
With an embodiment illustrated in Fig. 5, the second flap 7 comprises one end and a portion adjacent this end consisting only of the sheet 10, the elastic member 6 around which said one end is rolled, the upwardly branching section 11c and the section 13c having liquid absorbency on its top surface.
Except for the configurations of the respective second flaps, the embodiments illustrated in Figs. 3 through 5 are identical to the embodiment illustrated in Fig. 2. With the .c c-~ :~
a embodiments illustrated in Figs. 2 through 5, the second flaps 7 are formed along the respective outer edges with curved lines 15, leaving longitudinally opposite ends thereof intact, typically as illustrated in Fig. 1.
Furthermore, the second flaps 7 are provided respectively adjacent their upper ends, as viewed in Fig. 1, corresponding to opposite sides of the rear waist with tape fasteners 1f>, respectively.
Though not shown, there may be also provided elastic members along the curved lines 15 of the respective second flaps 7 and the upwardly branching sections 11, 11a, 11b, 11c of the respective second flaps 7 may be also formed in V-shape.
The topsheet 2 may be made of liquid-permeable nonwoven fabric, porous plastic film or the like, the backsheet 3 rnay be made of liquid-impermeable plastic .film, liquid-impermeable and moisture-permeable plastic film or the like, and the core 4 may be made of fluffy pulp mixed with super absorbent polymer particles, or the like. The sheet 9 may be made of sweat absorbent nonwoven fabric such as spun-bonded fabric, molten-bonded fabric under heat-treatment or molten-blown fabric prepared by extrusion under air-blow, of polyester fibres having hydrophilic surface treatment; cellulose.type hydrophilic fibres such as rayon, said fibres having said hydrophilic surface treatment, ., or the like made entangled under the effect of high pressurized fluid such as water jets with nonwoven fabric of hydrophobic fibres such as polyester, polypropylene or the like; and molten-banded nonwoven fabric comprising a mixture of fibres having said hydrophilic surface treatment or hydrophilic fibres with said hydrophobic fibres. The fibres having hydrophilic surface treatment or the hydrophilic fibres 'to be mixed with the hydrophobic fibres preferably occupy 70~ or higher of the final nonwoven fabric. The sheet 10 may be made of nonwoven fabric, such as spun-banded fabric, molten-blown,fabric under heat-treatment ar molten-blown fabric prepared by extrusion under air-blow, having liquid barrier characteristic and moisutre permeability such as polyester or polypropylene, or micro porous plastic film of polyethylene or the like.
_ 7 _
FIG. 1 is an unfolded plan view of diaper as an example of the article constructed according to the present invention;
FIG. 2 is a sectional view taken along a line II-II in FIG. 1;
FIG. 3 is a sectional view similar to FIG. 2 illustrating another embodiment;
FIG. 4 is a sectional view similar to FIG. 2 illustrating further another embodiment;
FIG. 5 is a sectional view similar to FIG. 2 illustrating still another embodiment.
PREFERRED EMBODIMENT OF THE INVENTION
The present invention will be described by way of - 3a -~~~~~.~<i~
a example, as embodiment in disposable diaper, in reference with the accompanying drawings.
Referring to Figs. 1 and 2, diaper 1 comprises a liquid-permeable topsheet 2 adapted to be in contact with the wearer's skin when it is put on, a liquid-impermeable backsheet 3 adapted to be not in contact with the wearer's skin, a liquid absorbent core 4 sandwiched betureen these two sheets 2, 3, first flaps 5 extending outward from respective side edges of said core, and second flaps 7 connected to outer edges 8 of the respective first flaps and having elastic members 6.
Each of the second flaps 7 is a combined sheet of a liquid absorbent sheet 9 and a liquid-impermeable and moisture-permeable sheet 10 so that such combined sheet totally serves as a liquid barrier. One end of the second flap 7 is folded back to form a sleeve 11 and the remainder of the flap 7, i.e., a section defined by 'the sleeve 11 extends outward from the sleeve 11, a section 13 thereof having liquid absorbency on its top surface. An elastic member 6 doubled into a cross-section of inverted U-shape is mounted within the sleeve 11 so as to be elastic longitudinally of the latter and thereby to provide 'the sleeve 11 with longitudinal elasticity. Specifically, the sleeve 11 is maintained in its upright posture under its contractile force. Longitudinally opposite ends 14 of the ., sleeve 11 are often collapsed inward and bonded onto the associated first flap. Tt is also possible that said opposite Cnds are collapsed outward and bonded onto the outer section 13 of the second flap or that the one end 14 is collapsed inward and bonded onto the first flap while the other end 14 is collapsed outward and bonded onto the outer.
section 13 of the second flap.
With an embodiment illustrated in Fig. 3, the second flap 7 comprises one end rolled around the elastic member 6, the upwardly branching section 11a and the section 13a provided on its top surface with liquid absorbency.
With an embodiment illustrated Fig. 4, the second flap 7 comprises one end sandwiching the elastic member 6 between the both sheets 9, 10, the upwardly branching section 11b and the section 13b having liquid absorbency on its top surface .
With an embodiment illustrated in Fig. 5, the second flap 7 comprises one end and a portion adjacent this end consisting only of the sheet 10, the elastic member 6 around which said one end is rolled, the upwardly branching section 11c and the section 13c having liquid absorbency on its top surface.
Except for the configurations of the respective second flaps, the embodiments illustrated in Figs. 3 through 5 are identical to the embodiment illustrated in Fig. 2. With the .c c-~ :~
a embodiments illustrated in Figs. 2 through 5, the second flaps 7 are formed along the respective outer edges with curved lines 15, leaving longitudinally opposite ends thereof intact, typically as illustrated in Fig. 1.
Furthermore, the second flaps 7 are provided respectively adjacent their upper ends, as viewed in Fig. 1, corresponding to opposite sides of the rear waist with tape fasteners 1f>, respectively.
Though not shown, there may be also provided elastic members along the curved lines 15 of the respective second flaps 7 and the upwardly branching sections 11, 11a, 11b, 11c of the respective second flaps 7 may be also formed in V-shape.
The topsheet 2 may be made of liquid-permeable nonwoven fabric, porous plastic film or the like, the backsheet 3 rnay be made of liquid-impermeable plastic .film, liquid-impermeable and moisture-permeable plastic film or the like, and the core 4 may be made of fluffy pulp mixed with super absorbent polymer particles, or the like. The sheet 9 may be made of sweat absorbent nonwoven fabric such as spun-bonded fabric, molten-bonded fabric under heat-treatment or molten-blown fabric prepared by extrusion under air-blow, of polyester fibres having hydrophilic surface treatment; cellulose.type hydrophilic fibres such as rayon, said fibres having said hydrophilic surface treatment, ., or the like made entangled under the effect of high pressurized fluid such as water jets with nonwoven fabric of hydrophobic fibres such as polyester, polypropylene or the like; and molten-banded nonwoven fabric comprising a mixture of fibres having said hydrophilic surface treatment or hydrophilic fibres with said hydrophobic fibres. The fibres having hydrophilic surface treatment or the hydrophilic fibres 'to be mixed with the hydrophobic fibres preferably occupy 70~ or higher of the final nonwoven fabric. The sheet 10 may be made of nonwoven fabric, such as spun-banded fabric, molten-blown,fabric under heat-treatment ar molten-blown fabric prepared by extrusion under air-blow, having liquid barrier characteristic and moisutre permeability such as polyester or polypropylene, or micro porous plastic film of polyethylene or the like.
_ 7 _
Claims (9)
1. A disposable absorbent article comprising a liquid-permeable topsheet, a liquid-impermeable backsheet, an absorbent core sandwiched between said topsheet and said backsheet, first flaps outwardly extending from opposite side edges of the absorbent core, respectively, and second flaps connected to the associated first flaps, each of said second flaps comprising a first section extending upward from a top surface of the associated first flap and being partially elastic so as to serve as a liquid barrier, and a second section extending outward from a lower portion of the associated first section, said second section being provided on a top surface thereof with a liquid-absorbent material.
2. A disposable absorbent article as recited in Claim 1, wherein at least said second section comprises an upper liquid-absorbent sheet adapted to be in contact with a wearer's skin, and a lower liquid-impermeable and moisture-permeable sheet.
3. A disposable absorbent article as recited in Claim 2, wherein said liquid-absorbent sheet is made of nonwoven fabric.
4. A disposable absorbent article as recited in Claim 2, wherein said liquid-impermeable and moisture-permeable sheet is made of nonwoven fabric or micro porous plastic film.
5. A disposable absorbent article as recited in Claim 1, wherein said second flaps are provided at least in upper ends thereof with elastic members so that each of said elastic members is covered by a portion of the associated second flap.
6. A disposable liquid absorbing article comprising (A) liquid-permeable topsheet, (B) a liquid-impermeable backsheet, (C) an absorbent core sandwiched between said top- and backsheets, (D) a first set of flaps formed from said topsheet and said backsheet extending laterally outwardly from opposite side edges of the absorbent core, and (E) a second set of flaps which is formed from material separate from the materials forming said topsheet and said backsheet, each of said second flaps being connected to one of each of said first flaps, each of said second flaps comprising (a) a first section which is formed from material separate from the material forming said topsheet and which extends upwardly from the surface of each first flap and being partially elastic so as to serve as a moisture-permeable liquid barrier, and (b) a second section which is also formed from material separate from the material forming said topsheet extending laterally outward from the lower portion of each said first section, each second section comprising (i) a lower sheet-like layer made of liquid-impermeable and moisture-permeable material, and (ii) an upper sheet-like layer that is liquid absorbent and adapted to be in contact with the wearer's skin.
7. An article as recited in claim 6 wherein said upper sheet-like layer is made of nonwoven fabric.
8. An article as recited in claim 6 wherein said lower sheet-like layer is made of nonwoven fabric or micro porous plastic film.
9. An article as recited in claim 6 wherein said second set of flaps is provided in its upper ends, with an elastic member so that each of said elastic members is covered by a portion of the associated second flap.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1-84183 | 1989-07-17 | ||
JP1989084183U JPH0525607Y2 (en) | 1989-07-17 | 1989-07-17 |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2021239A1 CA2021239A1 (en) | 1991-01-18 |
CA2021239C true CA2021239C (en) | 2001-10-30 |
Family
ID=13823369
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002021239A Expired - Fee Related CA2021239C (en) | 1989-07-17 | 1990-07-16 | Disposable absorbent articles |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0409149B1 (en) |
JP (1) | JPH0525607Y2 (en) |
AT (1) | ATE104843T1 (en) |
CA (1) | CA2021239C (en) |
DE (1) | DE59005509D1 (en) |
DK (1) | DK0409149T3 (en) |
ES (1) | ES2055831T3 (en) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
MY117258A (en) * | 1990-11-30 | 2004-06-30 | Kao Corp | Diaper |
ZA92308B (en) | 1991-09-11 | 1992-10-28 | Kimberly Clark Co | Thin absorbent article having rapid uptake of liquid |
GR1002237B (en) * | 1991-09-27 | 1996-04-19 | Mcneil Ppc Inc | Absorbent article having pre-formed gaskets. |
BR9204863A (en) * | 1992-11-25 | 1994-03-01 | Johnson & Johnson Ind Com | DISPOSABLE FEMALE INTIMO ABSORBENT |
CA2130426A1 (en) * | 1994-03-14 | 1995-09-15 | David Peter Kielpikowski | Containment flap construction |
US5620431A (en) * | 1994-12-30 | 1997-04-15 | Kimberly-Clark Corporation | Absorbent article with elasticized leg cuffs |
FR2770395B1 (en) * | 1997-11-04 | 2000-02-18 | Proteco | HYGIENE ARTICLE WITH BREATHABLE NON-WOVEN PANELS |
AU7255598A (en) * | 1998-04-23 | 1999-11-08 | Procter & Gamble Company, The | Disposable absorbent article having reinforced ear panels |
US6840930B1 (en) | 1998-04-23 | 2005-01-11 | The Procter & Gamble Company | Disposable absorbent article having reinforced ear panels |
US6171290B1 (en) | 1998-06-30 | 2001-01-09 | Mcneil-Ppc, Inc. | Absorbent article having double side cuffs |
JP2011072720A (en) * | 2009-10-01 | 2011-04-14 | Livedo Corporation | Absorbent article |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59146651A (en) * | 1982-11-15 | 1984-08-22 | ザ,プロクタ−,エンド,ギヤンブル,カンパニ− | Disposable clothing having air permeable leg cuff |
US4695278A (en) * | 1985-10-11 | 1987-09-22 | The Procter & Gamble Company | Absorbent article having dual cuffs |
PH26871A (en) * | 1986-03-31 | 1992-11-16 | Uni Charm Corp | Disposable diaper |
JPS62282003A (en) * | 1986-05-30 | 1987-12-07 | 株式会社トクヤマ | Back sheet for disposable diaper and its production |
GB2193625B (en) * | 1986-07-04 | 1990-11-28 | Uni Charm Corp | Disposable diaper |
JPH0198110A (en) * | 1987-10-12 | 1989-04-17 | Mitsubishi Electric Corp | Production of thin film magnetic head |
JPH0198103U (en) * | 1987-12-17 | 1989-06-30 | ||
JPH01162808A (en) * | 1987-12-19 | 1989-06-27 | Uni Charm Corp | Production of disposable diaper |
-
1989
- 1989-07-17 JP JP1989084183U patent/JPH0525607Y2/ja not_active Expired - Lifetime
-
1990
- 1990-07-16 DK DK90113619.2T patent/DK0409149T3/en active
- 1990-07-16 DE DE59005509T patent/DE59005509D1/en not_active Expired - Fee Related
- 1990-07-16 ES ES90113619T patent/ES2055831T3/en not_active Expired - Lifetime
- 1990-07-16 CA CA002021239A patent/CA2021239C/en not_active Expired - Fee Related
- 1990-07-16 AT AT9090113619T patent/ATE104843T1/en not_active IP Right Cessation
- 1990-07-16 EP EP90113619A patent/EP0409149B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH0324118U (en) | 1991-03-13 |
EP0409149B1 (en) | 1994-04-27 |
DK0409149T3 (en) | 1994-08-08 |
JPH0525607Y2 (en) | 1993-06-29 |
CA2021239A1 (en) | 1991-01-18 |
ATE104843T1 (en) | 1994-05-15 |
DE59005509D1 (en) | 1994-06-01 |
EP0409149A1 (en) | 1991-01-23 |
ES2055831T3 (en) | 1994-09-01 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed |