US3911921A - Disposable absorbent pad - Google Patents

Disposable absorbent pad Download PDF

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Publication number
US3911921A
US3911921A US467658A US46765874A US3911921A US 3911921 A US3911921 A US 3911921A US 467658 A US467658 A US 467658A US 46765874 A US46765874 A US 46765874A US 3911921 A US3911921 A US 3911921A
Authority
US
United States
Prior art keywords
absorbent pad
marginal
central portion
web
disposable absorbent
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 - Lifetime
Application number
US467658A
Other languages
English (en)
Inventor
Jan-Eric Svensson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Siemens Corp
Original Assignee
Siemens Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from SE7306424A external-priority patent/SE7306424L/xx
Application filed by Siemens Corp filed Critical Siemens Corp
Application granted granted Critical
Publication of US3911921A publication Critical patent/US3911921A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • A61F13/51—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 of the pads
    • 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 of the pads
    • A61F13/514—Backsheet, i.e. the impermeable cover or layer furthest from the skin
    • A61F13/51474—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by its structure
    • 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
    • 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
    • A61F13/53409—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 having a folded core
    • 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 of the pads
    • 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
    • A61F2013/51437—Backsheet, i.e. the impermeable cover or layer furthest from the skin characterised by the material being a film being integral with absorbent core
    • 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
    • A61F2013/53051—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 only in particular parts or specially arranged
    • 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
    • A61F13/56—Supporting or fastening means
    • A61F13/58—Adhesive tab fastener elements
    • A61F2013/582—Adhesive tab fastener elements with one strip on one place

Definitions

  • a disposable absorbent pad comprising of a fibrous material web, folded longitudinally and having marginal portion specially treated to be temporarily moisture impermeable, the folding being made in such a manner that one side of the absorbent pad is moisture absorbent whereas the other side thereof forms a moisture-tight barrier layer, wherein the barrier layer is formed by the both marginal portions of the original material web which portions are each folded first once to form double-layer edge portions and then folded again to be placed one upon the other on a central nonfolded, absorbent portion of the material web.
  • This invention relates to disposable absorbent pads, particularly adapted to be used as sanitary napkins in connection with menstruation periods or to absorb other secretions.
  • a well known disposable sanitary napkin comprises two portions, viz. on one hand an absorbent pad of a fibrous material, sometimes called fluff," in an enclosing envelope of a fibrous material web, normally called .nonwoven, and, on the other hand, a moisture tight portion which is affixed to one side of the absorbent pad and consists of layers of a specially treated, folded web of nonwoven, cellulose tissue or any corresponding material.
  • the expression specially treated has been used above to include any material manufactured by a known and patented method by which a web of nonwoven, tissue, paper or cellulose is made at least temporarily moisture-tight but which when wetted heavily absorbs liquid to such an extent that the web assumes the consistency of a very soft gel, or even dissolves.
  • a material treated in this way will sometimes be referred to as a moisture-tight material of the class described.
  • one side of a cellulose tissue web is provided with a layer of carboxymethylcellulose, and the layers in question are sometimes called CMC-layers.
  • a disposable absorbent pad comprising a fibrous material web which has been folded longitudinally and the marginal portion have been specially treated in such a manner that it is temporarily moisture impermeable at the specially treated portion but is easily moisture permeable at the central portion, the folding being such that one side of the absorbent pad is moisture absorbent whereas the other side thereof forms a moisture-tight barrier layer, and the barrier layer being formed by both marginal portions of the original material web which marginal portions are each centrally folded to form double-layer edge portions, each having a width broadly corresponding to the width of the central, non-folded portion of the material web.
  • FIG. 1 is a perspective view of an absorbent pad according to the invention in a first embodiment thereof;
  • FIG. 2 shows schematically the absorbent pad in FIG. 1 in cross-section along the plane IIII in FIG. 1;
  • FIG. 3 shows very schematically a similar crosssection of a second embodiment of the absorbent pad according to the invention.
  • the pad comprises a fibrous web 10, such as of creped paper of tis- "layer edge portions 11,12, the widths of which are central portion.
  • the edge portions 11 and 12 have been treated with carboxymethylcellulose, CMC, for instance, in such a manner that the CMC-layers of each part of each edge portion will face each other.
  • CMC carboxymethylcellulose
  • the mutually facing'CMC-layers of each edge portion form jointly barrier layers 14 and 15, respectively, as indicated by dashed lines in FIG. 2.
  • the absorbent pad is preferably provided with a double sided adhesive tape 16 for affixing the pad to the crotch portion of panties or scanties.
  • the web 10 is shown as comprising one layer'only.
  • the web 10 preferably comprising two layers of the same width, of which layers only the uppermost one is treated with CMC along the edge portions thereof.
  • the central portion 13 of the fibrous web 10 is absorbent, and more particularly entirely satisfactorily absorbent to absorb minimal secretion quantities, such as at the end of menstruation periods or other minimal secretion quantities.
  • the barrier layers 14 and 15 afford an adequate security against liquid penetration to the front side or outer side of the absorbent pad.
  • the embodiment as shown in FIG. 3 is similar to the one in FIG. 2 but in this second embodiment the absorbent pad is provided with an absorbent filling l7, preferably resting on a cellulose tissue web 18 or the like.
  • the absorbent filling 17 may have longitudinal compression lines to improve the spreading properties.
  • the filling 17 may have a varying thickness, longitudinally and/or transversely of the absorbent pad, so that the maximum amount of filling material 17 is present in the area where the absorption should be greatest. It is also possible to mix a filling 17 of so called fluffed cellulose with e.g. rayon fibers or with e.g. rayon fibers with various other additions so as to improve the absorption or spreading or e.g. to make the filling l7v bactericidal.
  • a disposable absorbent pad comprising:
  • each of said marginal portions having had a special treatment so as to be temporarily moisture impermeable, each marginal portion being substantially twice the width of said central portion and having a central longitudinal fold between its sections whereby each said marginal portion twice overlies said central portion.
  • a disposable absorbent pad according to claim 1 in which that section of each said marginal portion which has the edge of the web underlies the section of the marginal portion lying more remotely from said 3.
  • a disposable absorbent pad according to claim 1 including a second web of absorbent fibrous material 3 4 disposed coextensively against said first-named web, 'four marginal sections and said central portion. and also having a pair of Z-section marginal portions 5.
  • a disposable absorbent pad according to claim 4 but which are devoid of said special treatment. including a layer of cellulose tissue between said cen- 4.

Landscapes

  • Health & Medical Sciences (AREA)
  • Vascular Medicine (AREA)
  • Epidemiology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dermatology (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
US467658A 1973-05-08 1974-05-07 Disposable absorbent pad Expired - Lifetime US3911921A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7306424A SE7306424L (fr) 1973-05-08

Publications (1)

Publication Number Publication Date
US3911921A true US3911921A (en) 1975-10-14

Family

ID=20317395

Family Applications (1)

Application Number Title Priority Date Filing Date
US467658A Expired - Lifetime US3911921A (en) 1973-05-08 1974-05-07 Disposable absorbent pad

Country Status (6)

Country Link
US (1) US3911921A (fr)
JP (1) JPS5031697A (fr)
BE (1) BE814704A (fr)
DE (1) DE2421942A1 (fr)
FR (1) FR2228467A1 (fr)
NL (1) NL7406158A (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4057061A (en) * 1974-12-18 1977-11-08 Kabushiki Kaisha Angel Sanitary napkin
US4213813A (en) * 1978-10-23 1980-07-22 Hendricks Laurel A Sanitary napkin
USD263169S (en) 1979-09-18 1982-02-23 Molnlycke Ab Incontinence pad for men
WO1982001817A1 (fr) * 1980-12-05 1982-06-10 Larry L Pierce Serviette hygienique
US5507735A (en) * 1994-08-05 1996-04-16 Kimberly-Clark Corporation Absorbent article having moveable attachment means
US20020146955A1 (en) * 2000-10-18 2002-10-10 Levine Daniel S. Pliable pad for collecting and absorbing liquids
US6824853B1 (en) 2000-10-18 2004-11-30 Alpha Scientific Corporation Pliable pad for collecting and absorbing liquids
US20060134384A1 (en) * 2004-12-02 2006-06-22 Vinson Kenneth D Fibrous structures comprising a solid additive
US20110099778A1 (en) * 2009-11-02 2011-05-05 Johnson Eugenia L Cremation urn, kit and system for retaining cremation remains

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3088463A (en) * 1960-05-09 1963-05-07 Johnson & Johnson Sanitary napkins
US3665923A (en) * 1970-02-05 1972-05-30 Kimberly Clark Co Flushable sanitary napkin

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3088463A (en) * 1960-05-09 1963-05-07 Johnson & Johnson Sanitary napkins
US3665923A (en) * 1970-02-05 1972-05-30 Kimberly Clark Co Flushable sanitary napkin

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4057061A (en) * 1974-12-18 1977-11-08 Kabushiki Kaisha Angel Sanitary napkin
US4213813A (en) * 1978-10-23 1980-07-22 Hendricks Laurel A Sanitary napkin
USD263169S (en) 1979-09-18 1982-02-23 Molnlycke Ab Incontinence pad for men
WO1982001817A1 (fr) * 1980-12-05 1982-06-10 Larry L Pierce Serviette hygienique
US4340058A (en) * 1980-12-05 1982-07-20 Pierce Larry L Sanitary napkin
US5507735A (en) * 1994-08-05 1996-04-16 Kimberly-Clark Corporation Absorbent article having moveable attachment means
US20020146955A1 (en) * 2000-10-18 2002-10-10 Levine Daniel S. Pliable pad for collecting and absorbing liquids
US6824853B1 (en) 2000-10-18 2004-11-30 Alpha Scientific Corporation Pliable pad for collecting and absorbing liquids
AU2002224396B2 (en) * 2000-10-18 2005-08-11 Alpha Scientific Corporation Pliable pad for collecting and absorbing liquids
WO2003104663A1 (fr) * 2002-06-07 2003-12-18 Alpha Scientific Corporation Compresse pliable de collecte et d'absorption de liquides
US20060134384A1 (en) * 2004-12-02 2006-06-22 Vinson Kenneth D Fibrous structures comprising a solid additive
US20110099778A1 (en) * 2009-11-02 2011-05-05 Johnson Eugenia L Cremation urn, kit and system for retaining cremation remains

Also Published As

Publication number Publication date
JPS5031697A (fr) 1975-03-28
BE814704A (fr) 1974-09-02
NL7406158A (fr) 1974-11-12
FR2228467A1 (fr) 1974-12-06
DE2421942A1 (de) 1974-11-28

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