WO1996001606A1 - A sanitary napkin and a method of manufacturing a sanitary napkin - Google Patents
A sanitary napkin and a method of manufacturing a sanitary napkin Download PDFInfo
- Publication number
- WO1996001606A1 WO1996001606A1 PCT/SE1995/000673 SE9500673W WO9601606A1 WO 1996001606 A1 WO1996001606 A1 WO 1996001606A1 SE 9500673 W SE9500673 W SE 9500673W WO 9601606 A1 WO9601606 A1 WO 9601606A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sanitary napkin
- absorbent body
- resilient
- layer
- absorbent
- Prior art date
Links
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
- A61F13/47—Sanitary towels, incontinence pads or napkins
- A61F13/472—Sanitary towels, incontinence pads or napkins specially adapted for female use
- A61F13/47218—Sanitary towels, incontinence pads or napkins specially adapted for female use with a raised crotch region, e.g. hump
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/45—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the shape
- A61F13/47—Sanitary towels, incontinence pads or napkins
- A61F13/472—Sanitary towels, incontinence pads or napkins specially adapted for female use
- A61F13/47236—Sanitary towels, incontinence pads or napkins specially adapted for female use characterised by an unusual contour
- A61F13/47245—Sanitary towels, incontinence pads or napkins specially adapted for female use characterised by an unusual contour with asymmetry around the x or y axis
-
- 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
- A61F13/531—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 a homogeneous composition through the thickness of the pad
Definitions
- the present invention relates to a sanitary napkin comprising an absorbent body, and also to a method for manufacturing such a sanitary napkin.
- the absorbent bodies included in present-day sanitary napkins normally have sufficient absorption capacity to take-up all menstrual fluid discharged by the wearer over the intended use time. Leakage of a sanitary napkin is usually due to factors other than the absorption capacity of the absorbent body. One such factor is the manner in which the napkin fits the wearer, since there is a serious risk of leakage should gaps or the like form between the wearer's body and the napkin after the napkin has been applied.
- the primary object of the present invention is to reduce the risk of leakage caused by the formation of such gaps, while a secondary object is to reduce leakage caused by saturation of the absorbent body in local areas thereof.
- a sanitary napkin which includes an absorbent body and which is characterized by a layer of compressible and resilient, essentially non-absorbent material placed adjacent that side of the absorbent body which lies distal to the wearer's body in use.
- the layer of resilient material will urge the absorbent body against the wearer's body and therewith ensure that good body contact is obtained between napkin and user.
- the resilient layer also extends around the periphery of the absorbent body and is comprised of hydrophobic fibre wadding or porous foamed plastic.
- the resilient layer is thicker within the region of the wetting point than in other regions.
- the resilient layer is placed advantageously between the absorbent body and an outer casing sheet, which is preferably comprised of an air-permeable material.
- An inner casing sheet of liquid-permeable material is also placed adjacent that side of the absorbent body which lies distal to the resilient layer.
- the invention also relates to a method of manufacturing a sanitary napkin which includes an absorbent body and a layer of resilient material, said method being characterized by the following steps: Fastening together continuous layers of absorbent material and resilient material to form a continuous composite web and then cutting finished sanitary napkins from the continuous web.
- the invention provides a particularly simple method for the manufacture of sanitary napkins, since, in the case of the present invention, the absorbent body of the napkin need not be enclosed between an inner and an outer casing sheet that extend peripherally beyond the absorbent body and there joined together, as is the case of conventional sanitary napkin manufacture.
- At least one continuous casing sheet is fastened to the continuous sheets of absorbent and resilient material, prior to cutting- out finished napkins.
- Fig. 1 is a schematic view from above of a first embodiment of an inventive sanitary napkin, with the inner casing sheet partially removed;
- Fig. 2 is a cross-sectional view take on the line II-II in Figure 1;
- Fig. 3 is a schematic perspective view of a second embodiment of an inventive sanitary napkin;
- Fig. 4 illustrates schematically a method for manufacturing a sanitary napkin according to a third embodiment of the invention.
- Fig. 5 illustrates a sanitary napkin produced by the method illustrated in Figure 4.
- the sanitary napkin illustrated in Figures 1 and 2 includes an absorbent body 1 enclosed between an inner casing sheet 2 of liquid-permeable material, this layer lying proximal to the wearer's body in use, and an outer casing sheet 3, these sheets extending peripherally beyond the absorbent body and being joined together in regions outside the absorbent body, for instance by gluing or welding.
- the casing sheets 2, 3 form outwardly protruding flaps 4, 5 in the longitudinal central region of the napkin.
- the flaps 4, 5 are folded around the edges of the panties and fastened to the outside thereof with the aid of suitable, conventional fastener means (not shown) , for instance adhesive coatings.
- the sanitary napkin is also conveniently provided with additional fastener means on the outside of the outer casing sheet, so as to secure the napkin to the inner surface of the panties.
- a layer 6 of compressible and resilient material is provided between the absorbent body 1 and the outer casing sheet 3.
- This layer may suitably be comprised of wadding of the kind used as a spacing layer between the inner casing sheet and the absorbent body of diapers, for instance polyester fibre wadding.
- Such material will not collapse when wet, which is important for ensuring that the inventive napkin will function as intended even after absorbing a considerable volume of menstrual fluid.
- Other suitable materials are foamed plastics.
- a sanitary napkin constructed in accordance with the invention can thus effectively adapt its shape to conform to the available space between the wearer's body and the panties, meaning that no gaps or the like are liable to form between the sanitary napkin and the wearer's body. Menstrual fluid will therefore always be discharged close to the absorbent body, with only a small risk of leakage in the case of the inventive sanitary napkin.
- the absorbent body 1 is preferably thin and flexible so as to enable the absorbent body to curve and conform to the wearer's body. This is not totally necessary, however, when the layer of resilient material extends peripherally beyond the absorbent body, so as to lie against the wearer's body when worn, either directly or through the intermediary of inner casing part.
- the resilient layer will act as a "seal" and prevent fluid leaking peripher ⁇ ally from the napkin.
- the absorbent body is so flexible as to adapt to the shape of the wearer's body under the influence of the spring force exerted by the resilient layer.
- the absorbent body can be produced from material which is used typically for this purpose, for instance cellulose fluff, and which has been compressed to a stiffness such as to be able to resist the spring force that is exerted by a layer of resilient material that has been compressed to a maximum, without being further deformed to any appreciable extent.
- FIG 3 illustrates a second embodiment of an inventive sanitary napkin.
- the napkin of this embodiment includes an absorbent body 7, a layer 8 of non-absorbent, compressible and resilient material, and an outer casing sheet 9.
- the absorbent body 7 is constructed so as to retain a stable structure and so as not to collapse in a wet state.
- the body shall also have a good liquid retention capacity.
- the absorbent body 7 may be manufactured from a dry-formed sheet material of air-laid cellulose fluff of the kind described in Swedish Patent Application No. 9203445-3.
- the resilient layer 8 extends peripherally beyond the rectangular absorbent body 7 and, when the napkin is worn, provides the same sealing effect as that described for the sanitary napkin shown in Figures 1 and 2.
- the layer 8 of the sanitary napkin embodiment shown in Figure 3 shall also have a barrier effect, so that discharged liquid is unable to penetrate the layer. It has been found that highly viscous menstrual fluid has difficulty in penetrating the wadding that is often used in diapers as a spacing layer nearest the wearer's body, and consequently material of this nature also functions phenomenally in a sanitary napkin of the kind illustrated in Figure 3.
- This barrier effect also reduces the liquid-impervious requirement placed on the outer casing sheet 9, therewith enabling the outer casing sheet to be comprised of an air-permeable material, such as perforated plastic film or hydrophobic nonwoven material.
- the outer casing sheet 9 may even be omitted completely.
- the resilient layer 8 is thicker in the longitudinal central region of the napkin than in the remainder of the napkin, so as to ensure that when donning a pair of panties in which such a napkin has been inserted, the layer will be compressed within the region of the wetting point, i.e. the region in which menstrual fluid is normally discharged onto the napkin, so that the absorbent body will be positively pressed against the wearer's body, at least in this region of the napkin.
- the layer 6 of the embodiment illustrated in Figures 1 and 2 may also be formed to advantage in the same way.
- a resilient layer of varying thickness can be produced by constructing the layer of two or more resilient bodies of mutually different size and placing these bodies one on top of the other.
- FIG. 4 The aforesaid barrier effect afforded by those parts of the resilient layer that lie in the plane outside the absorbent body enable a third embodiment of an inventive sanitary napkin to be manufactured in a particular simple fashion.
- This method is illustrated schematically in Figure 4, and comprises two manufacturing steps, namely a first step of taking webs of casing material 13, a sheet 14 of absorbent material, and a sheet 15 of nonwoven absorbent, compressible and resilient material from a respective storage reel 10-12, and combining these webs or sheets and joining them together, for instance by applying an adhesive thereto with the aid of a glue applicator (not shown) and passing the webs through a pair of rolls 16, wherein the second step comprises cutting finished sanitary napkins from the composite web with the aid of a suitable cutting means 17.
- Figure 5 illustrates a sanitary napkin manufactured in accordance with the method shown in Figure 4.
- a napkin manufactured in accordance with this method differs from the napkin shown in Figure 3 by virtue of having an inner casing sheet 13 and lacking an outer casing sheet, and also by virtue of the fact that the resilient layer 15 extends only outside the absorbent body 14 along the longitudinal sides thereof. This can be accepted, however, because side leakage consti- tutes a much greater problem than end leakage, which is not likely to occur before the total absorption capacity of the absorbent body has been utilized and the napkin has thus been used for a longer period than that for which it is intended.
- Inventive sanitary napkins can be packaged with the resilient layer compressed to a maximum and do not therefore take up more room than traditional napkins.
- the described exemplifying embodiments can be modified in many ways within the scope of the invention.
- the napkin shown in Figure 3 may also be provided with an inner casing sheet
- the napkin shown in Figure 5 may also be provided with an outer casing sheet, in which case the method illustrated in Figure 4 is modified by adding a further storage reel containing a continuous web of outer casing material.
- the sanitary napkin and/or the absorbent bodies may have forms different to those shown in the Figures. Neither need the resilient layer extend laterally beyond the absorbent body, but need only extend to within the region of the wetting point, for instance, i.e. the region within which menstrual fluid is normally discharged when the napkin is worn in the correct position. The invention is therefore only limited by the content of the accompanying Claims.
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)
- Laminated Bodies (AREA)
Abstract
Description
Claims
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP95926052A EP0957856B1 (en) | 1994-07-11 | 1995-06-07 | A sanitary napkin |
US08/750,634 US6483007B1 (en) | 1994-07-11 | 1995-06-07 | Sanitary napkin and a method of manufacturing a sanitary napkin |
DE69535490T DE69535490T2 (en) | 1994-07-11 | 1995-06-07 | sanitary napkin |
MX9700289A MX9700289A (en) | 1995-06-07 | 1995-06-07 | A sanitary napkin and a method of manufacturing a sanitary napkin. |
SK37-97A SK3797A3 (en) | 1994-07-11 | 1995-06-07 | A sanitary napkin and a method of manufacturing a sanitary napkin |
JP8504246A JPH10504737A (en) | 1994-07-11 | 1995-06-07 | Sanitary napkin and method of manufacturing sanitary napkin |
AU29935/95A AU699434B2 (en) | 1994-07-11 | 1995-06-07 | A sanitary napkin and a method of manufacturing a sanitary napkin |
PL95318144A PL179124B1 (en) | 1994-07-11 | 1995-06-07 | Hygienic suspensorium and method of making same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9402448A SE503107C2 (en) | 1994-07-11 | 1994-07-11 | Dambinding and method of manufacture thereof |
SE9402448-6 | 1994-07-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1996001606A1 true WO1996001606A1 (en) | 1996-01-25 |
Family
ID=20394698
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/SE1995/000673 WO1996001606A1 (en) | 1994-07-11 | 1995-06-07 | A sanitary napkin and a method of manufacturing a sanitary napkin |
Country Status (15)
Country | Link |
---|---|
US (1) | US6483007B1 (en) |
EP (1) | EP0957856B1 (en) |
JP (1) | JPH10504737A (en) |
AU (1) | AU699434B2 (en) |
CO (1) | CO4410170A1 (en) |
DE (1) | DE69535490T2 (en) |
GB (1) | GB2290973B (en) |
PE (1) | PE41296A1 (en) |
PL (1) | PL179124B1 (en) |
SE (1) | SE503107C2 (en) |
SK (1) | SK3797A3 (en) |
TN (1) | TNSN95078A1 (en) |
TR (1) | TR199500845A2 (en) |
WO (1) | WO1996001606A1 (en) |
ZA (1) | ZA955517B (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4159179B2 (en) * | 1999-05-14 | 2008-10-01 | 花王株式会社 | Absorbent articles |
EP1062930B1 (en) * | 1999-06-21 | 2006-08-16 | Kao Corporation | Absorbent article |
US7458959B2 (en) * | 2001-12-20 | 2008-12-02 | Sca Hygiene Products Ab | Breathable absorbent article |
GB0814969D0 (en) * | 2008-07-07 | 2008-09-24 | Hough Judith | Child's paint protective liner |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0085729A1 (en) * | 1982-02-09 | 1983-08-17 | Nordson Corporation | Process and apparatus for coating a substrate with a highly absorbent material, in particular a hygienic article |
EP0572033A2 (en) * | 1992-05-29 | 1993-12-01 | Kimberly-Clark Corporation | Absorbent article |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE85729C (en) | ||||
FR2354753A1 (en) * | 1976-06-14 | 1978-01-13 | Franco Pierre | EXTERNAL PERIODIC PADDING FOR DISPOSAL |
US4079739A (en) * | 1976-12-27 | 1978-03-21 | Kimberly-Clark Corporation | Die-cut contoured catamenial napkin of multi-layered construction |
US4212296A (en) * | 1978-04-20 | 1980-07-15 | The Kendall Company | Bandage with protective member |
FR2529056A1 (en) * | 1982-06-24 | 1983-12-30 | Boussac Saint Freres Bsf | PERFECTIONED BREATHHEAD |
US4534354A (en) * | 1982-09-29 | 1985-08-13 | Universal Medical Products, Inc. | Bandage |
US4752349A (en) * | 1986-02-28 | 1988-06-21 | The Procter & Gamble Company | Disposable absorbent product having resilient scalloped edge, and method of making the product |
ES2039047T5 (en) | 1988-03-31 | 2004-06-16 | THE PROCTER & GAMBLE COMPANY | ABSORBENT ARTICLE. |
US5091240A (en) * | 1989-09-05 | 1992-02-25 | Tambrands, Inc. | Laminate incorporating hot melt and water based adhesives |
US5012540A (en) * | 1989-12-18 | 1991-05-07 | Hockaday Susan D | Disposable sheet protective device |
US5690610A (en) * | 1991-03-04 | 1997-11-25 | Nichiban Co., Ltd. | Adhesive material for hemostasis and a method for hemostasis |
US5591150A (en) * | 1991-07-23 | 1997-01-07 | The Procter And Gamble Company | Sanitary napkin having a resilient body-conforming portion |
GR1002328B (en) * | 1992-09-17 | 1996-05-15 | Mcneil-Ppc Inc. | Method of attaching adhesive to a tabbed absorbent article. |
SE508961C2 (en) | 1992-11-17 | 1998-11-23 | Sca Hygiene Prod Ab | Absorbent structure and absorbent articles containing the structure in question |
GR1002064B (en) * | 1993-01-22 | 1995-11-29 | Mcneil Ppc Inc | Prebent anatomically shaped self-aligning sanitary napkin. |
US5558656A (en) * | 1993-12-20 | 1996-09-24 | The Procter & Gamble Company | Sanitary napkin having an internal shaping component |
US5591148A (en) * | 1994-04-08 | 1997-01-07 | The Procter & Gamble Company | Sanitary napkin having an independently displaceable central core segment |
US5520674A (en) * | 1994-05-31 | 1996-05-28 | The Procter & Gamble Company | Disposable absorbent article having a sealed expandable component |
-
1994
- 1994-07-11 SE SE9402448A patent/SE503107C2/en not_active IP Right Cessation
-
1995
- 1995-06-07 JP JP8504246A patent/JPH10504737A/en active Pending
- 1995-06-07 SK SK37-97A patent/SK3797A3/en unknown
- 1995-06-07 EP EP95926052A patent/EP0957856B1/en not_active Expired - Lifetime
- 1995-06-07 US US08/750,634 patent/US6483007B1/en not_active Expired - Lifetime
- 1995-06-07 WO PCT/SE1995/000673 patent/WO1996001606A1/en active IP Right Grant
- 1995-06-07 DE DE69535490T patent/DE69535490T2/en not_active Expired - Lifetime
- 1995-06-07 AU AU29935/95A patent/AU699434B2/en not_active Expired
- 1995-06-07 PL PL95318144A patent/PL179124B1/en unknown
- 1995-06-21 GB GB9512568A patent/GB2290973B/en not_active Expired - Lifetime
- 1995-07-03 ZA ZA955517A patent/ZA955517B/en unknown
- 1995-07-06 PE PE1995273083A patent/PE41296A1/en not_active Application Discontinuation
- 1995-07-07 CO CO95029781A patent/CO4410170A1/en unknown
- 1995-07-10 TN TNTNSN95078A patent/TNSN95078A1/en unknown
- 1995-07-11 TR TR95/00845A patent/TR199500845A2/en unknown
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0085729A1 (en) * | 1982-02-09 | 1983-08-17 | Nordson Corporation | Process and apparatus for coating a substrate with a highly absorbent material, in particular a hygienic article |
EP0572033A2 (en) * | 1992-05-29 | 1993-12-01 | Kimberly-Clark Corporation | Absorbent article |
Also Published As
Publication number | Publication date |
---|---|
SE9402448D0 (en) | 1994-07-11 |
JPH10504737A (en) | 1998-05-12 |
ZA955517B (en) | 1996-02-13 |
EP0957856B1 (en) | 2007-05-02 |
DE69535490D1 (en) | 2007-06-14 |
PL318144A1 (en) | 1997-05-12 |
PL179124B1 (en) | 2000-07-31 |
GB9512568D0 (en) | 1995-08-23 |
EP0957856A1 (en) | 1999-11-24 |
TR199500845A2 (en) | 1996-06-21 |
CO4410170A1 (en) | 1997-01-09 |
DE69535490T2 (en) | 2008-01-03 |
SK3797A3 (en) | 1997-09-10 |
PE41296A1 (en) | 1996-10-02 |
US6483007B1 (en) | 2002-11-19 |
SE9402448L (en) | 1996-01-12 |
SE503107C2 (en) | 1996-03-25 |
AU699434B2 (en) | 1998-12-03 |
GB2290973A (en) | 1996-01-17 |
TNSN95078A1 (en) | 1996-02-06 |
GB2290973B (en) | 1998-04-22 |
AU2993595A (en) | 1996-02-09 |
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