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
  • A61F13/4702—Sanitary towels, incontinence pads or napkins having a reinforcing member
• • 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
  • A61F13/15203—Properties of the article, e.g. stiffness or absorbency
  • A61F2013/15284—Properties of the article, e.g. stiffness or absorbency characterized by quantifiable properties
• • 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
  • A61F2013/4708—Panty-liner

Definitions

• Hygiene protection covers such as Panty liners, Sanitary napkins and light incontinence products can be made very thin without loosing absorbent capacity by the incorporation of superabsorbent in the absorbent bat. however the lack of stability often restrains the possibility to make a very thin product.
• the manufacture of the cellulose fluff can be made in conjunction with the converting equipment where the cellulose fibers are defibrated into a fluff in a special mill and formed on top of a conveyer belt to appropriate thickness and dimension.
• Absorbent bodies are also to a large extend made as an air laid core in special machines too jumbo rolls, which in its turn are converted to smaller sizes suitable for the manufacturing process of hygiene products.
• These absorbent bodies can but do not necessary have to contain additives of different kinds such as Latex or melt fibers in order to improve the strength of the body. However, all these absorbent bodies have a very poor stability, especially in wet condition.
• Fig. 1 shows the state of the art of a hygiene protector seen from above where (1) shows the inner layer to be situated nearest to the body of the user (2) shows the absorbent body situated under the inner layer (1).
• Fig. 2 shows a cut through fig. 1 along the line A-A where (1) is the inner layer situated nearest to the body of the user (2) is the absorbent body (3) is the outer layer, a liquid impermeable thin plastic film, (4) shows the glue binding the different layers (1,2,3) together.
• (5) is a self tacking glue to be fastened to the briefs of the user after the release paper (6) has been removed.
• Fig. 3 shows an example of a design made according to the invention seen from above where (1) is the inner layer situated nearest to the body of the user and (2) is the absorbent body.
• Fig.4 shows a cut through fig. 3 along the line B-B where (1) is the inner layer situated nearest to the body of the user. (2) is the absorbent body, (7) is the outer layer according to this invention (4) shows the adhesive that binds the different layers
• Fig.5 shows a folded specimen (9) under a load (8).
• Fig.6 shows test equipment to measure the bending resistance were (13) is a scale (12) the scale platen (10) the top platen for the test specimen (9) to be pressured against when measuring the bending resistance.
• Fig. 7 shows an example of the invention on a tanga or string panty liner .
• Fig.8 shows a cut through line A-A in fig.7 where (1) is the inner layer situated nearest to the body of the user (2) the absorbent body and (7) is an outer layer according to this invention.
• This invention describes an embodiment of an absorbent hygiene protector such as inner layer (1) permeable to liquid an outer layer (7) essentially impermeable to liquid made of an expanded polymer with a thickness between 0.2 - 2.5 mm. density between 5 -40 kg/m3 and a bending resistance in LD (Longitudinal direction) or TD (Transversal direction) between 0.05- 2.5 g/cm and an absorbtion body (2) located between the outer and inner layer.
• LD Longitudinal direction
• TD Transversal direction
• a hygiene protector consisting of a liquid permeable inner layer ( 1 ) situated nearest to the body of the user, such as Nonwoven made of Polypropylene. Polyester, Polyethylene. PVC, Viscose or other for the use suitable materials or mixes thereof with a surface weight between 5-45g/m2, or perforated plastic film made of such materials as Polypropylene, Polyester, Polyethylene, Polyvinyl chloride, or other for the purpose suitable polymers or polymer mixes with a weight of 5-45g/m2 or combinations thereof.
• Tissue layers (4) fig. 4 with a weight between 10-40g/m2 can also be placed between the inner layer (1) and the absorption body (2) and the outer layer (7).
• the inner layer (1) can be abandoned if the absorbtion body (2) is of a good enough quality to be situated in direct contact with the users skin.
• An acquisition layer made of high loft nonwoven can also be placed between the inner layer (1) and the absorbent body (2) to improve absorption speed and rewet properties.
• the absorption body (2) is preferably made of cellulose fluff, airlaid or non-airlaid, cotton or mixes of cotton and synthetic fibers.
• the absorption body can also be made of one or more layers of tissue or embossed soft paper.
• the total surface weight of the absorbent body can be varied between 15-250 g/m2, preferably 20-150 g/m2 and contain superabsorbents in a granular, powder or fiber form. The weight of these superabsorbents can vary between 0-80 % of the total weight, preferably 0- 70 %.
• Superabsorbents are well known to the men skilled in the art.
• the outer layer (7) according to the invention is made of a water impermeable expanded polymer with closed or partly closed cells. It can be made of any kind of polymer such as Polyester, Polyvinyl chloride ,Biodegradable starch polymers,
• the outer layer can also be made moisture permeable by means of using moisture permeable polymers or by means of being made micro porous in the manufacturing process.
• the water vapor permeability in such an outer layer can vary between 200- 10000g/m2/24 hours. Preferably between 1000- 6000g/m2/24 hours.
• the outer layer can also have a thin layer of plastic film or nonwoven on the outside of the layer.
• a 5x5cm specimen is cut from the product or the material to be tested.
• the specimen is placed on top of a flat surface and a suitable amount of test fluid is applied with a pipette in the center of the specimen at the same time as a stopwatch is started.
• the specimen is double folded in the Longitudinal direction hereinafter called LD fig.5 (9) and a weight of 1.5 kg (8) is placed on top of the double folded specimen for a time of two minutes, after that the specimen is placed on top of a scale platen (12) fig.6.
• a rig (10) of at least 6-cm width is placed on the top of the scale surface (1 1) so it presses the double folded specimen (9) against the scale platen (12), which is situated at a distance of 1 1 mm from the rig (10).
• the pressure force of the specimen against the scale is noted after one minute's time and is a measurement of the specimens bending resistance.
• the test procedure is repeated in the transverse direction hereinafter called TD.
• the measurements are also made as described with a dry specimen. The results are presented as the bending resistance in g/cm with 2 decimals. Test fluid
• Hygiene protector with a length of 155 mm and a width of 70 mm and a neck of 50 mm with a total weight of 1.6g where all layers are joined together with hot melt and forms a homogenous unit consisting of an inner layer with a surface weight of 23g/m2 attached to an absorbent body made of airlaid cellulose without superabsorbents and of a surface weight of 90g/m2 and bottom layer made of expanded polyethylene with a surface weight of 20g/m2 a thickness of 1mm and a density of 20 kg/m3.
• the pantyliner also has an adhesive layer made of tree parallel 5mm wide strings stretching along the whole length of the back of the pantyliner covered with a siliconiced release paper with a weight of 40g/m2.
• 50x50mm specimen without release paper is 0.69g/cm in LD and 0.87 g/cm in TD in dry condition.
• the bending resistance in LD is 0.24g/cm and in TD 0.5g/cm.
• a hygiene protector with a length of 155 mm and a width of 50 mm made of a inner layer of a 23g/m2 nonwoven (PellyluxPPF23, Germany) laminated with an air laid cellulose of a weight of 90g/cm2 including 15 % by weight of superabsorbents (Walkisoft AL T 576) laminated with an expanded polyethylene layer with a surface weight of 20g/cm2, thickness of 1 mm and a density of 20kg/m3 (Fawolen PD 120 from Fagerdala Sweden).
• the bending resistance of this composition is in dry condition LD 0,87 g/cm in TD l,2g/cm, in wet condition with a dosage of 1-ml synthetic blood, LD 0.29-g/cm TD 0,65 g/cm.
• Fig. 7 shows a string or tanga panty liner according to the invention with a length of
• Fig. 8 shows a cut through fig. 7 along the line A-A where (7) is an expanded polyethylene with a surface weight of 20g/m2 thickness of 1 mm and a density of
• the absorbent body is made of an air laid cellulose with a surface weight of 55g/m2 (TL5552, Duni AB Sweden) without superabsorbents
• the cower stock is a spunlaid Polypropylene nonwoven (HO022, Fiberweb Sweden) of a standard quality with a surface weight of 22g/m2.
• the bending resistance in dry condition is 0.75g/cm in LD and 1,0 g/cm in TD.
• the bending resistance in LD is 0.75g/cm in LD and 1,0 g/cm in TD.
• pantyliners 13 548) since the back part of these pantyliners are very narrow and sensitive to bending and deformation.
• a suitable bending resistance in either LD or TD in wet condition for products made according to the invention is between 0.1-3.5 g/cm

Landscapes

• Health & Medical Sciences (AREA)
• Epidemiology (AREA)
• Life Sciences & Earth Sciences (AREA)
• Biomedical Technology (AREA)
• Heart & Thoracic Surgery (AREA)
• Vascular Medicine (AREA)
• Engineering & Computer Science (AREA)
• Animal Behavior & Ethology (AREA)
• General Health & Medical Sciences (AREA)
• Public Health (AREA)
• Veterinary Medicine (AREA)
• Absorbent Articles And Supports Therefor (AREA)
• Orthopedics, Nursing, And Contraception (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=20414202

Family Applications (1)

Country Status (8)

Families Citing this family (1)

Family Cites Families (4)

• 1999
  • 1999-01-25 SE SE9900207A patent/SE9900207L/sv not_active Application Discontinuation
• 2000
  • 2000-01-25 CA CA002325062A patent/CA2325062A1/en not_active Abandoned
  • 2000-01-25 CN CN 00800073 patent/CN1296402A/zh active Pending
  • 2000-01-25 BR BR0004353-2A patent/BR0004353A/pt not_active Application Discontinuation
  • 2000-01-25 JP JP2000594424A patent/JP2002535043A/ja active Pending
  • 2000-01-25 AU AU37895/00A patent/AU3789500A/en not_active Abandoned
  • 2000-01-25 EP EP00902281A patent/EP1067892A1/en not_active Withdrawn
  • 2000-01-25 WO PCT/SE2000/000142 patent/WO2000042963A1/en not_active Application Discontinuation

Non-Patent Citations (1)

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