EP1185227A1 - Tampon hygienique - Google Patents

Tampon hygienique

Info

Publication number
EP1185227A1
EP1185227A1 EP00909477A EP00909477A EP1185227A1 EP 1185227 A1 EP1185227 A1 EP 1185227A1 EP 00909477 A EP00909477 A EP 00909477A EP 00909477 A EP00909477 A EP 00909477A EP 1185227 A1 EP1185227 A1 EP 1185227A1
Authority
EP
European Patent Office
Prior art keywords
tampon
blank
press
circumference
tampon blank
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.)
Withdrawn
Application number
EP00909477A
Other languages
German (de)
English (en)
Inventor
Malcolm Joseph Cadman
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.)
Accantia Holdings Ltd
Original Assignee
Smith and Nephew PLC
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
Application filed by Smith and Nephew PLC filed Critical Smith and Nephew PLC
Publication of EP1185227A1 publication Critical patent/EP1185227A1/fr
Withdrawn legal-status Critical Current

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
    • A61F13/20—Tampons, e.g. catamenial tampons; Accessories therefor
    • A61F13/2051—Tampons, e.g. catamenial tampons; Accessories therefor characterised by the material or the structure of the inner absorbing 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
    • A61F13/20—Tampons, e.g. catamenial tampons; Accessories therefor
    • A61F13/2082—Apparatus or processes of manufacturing
    • A61F13/2085—Catamenial tampons

Definitions

  • This invention relates to a novel form of tampon, and a process and apparatus for its manufacture.
  • European Patent Application No.EP-A-0422660 also describes a method and apparatus for manufacturing a tampon. This comprises compressing a tampon blank radially to its longitudinal mid- axis over an even number of at least 6 portions mutually adjacent in the circumferential direction.
  • the tampon produced possesses an even number of longitudinal ribs the outer ends of which form a soft essentially smooth cylindrical surface and has a central approximately circular highly compressed fibre core.
  • tampon presses are often designed so that the jaws effecting the pressing of the tampon blank pass along a line through the longitudinal axis of the tampon blank.
  • tampons can be pressed with an odd number of 7 or more jaws (also known as dies) and in a symmetrical and equidistant and/or concentric pressing action to produce a tampon with enhanced properties over prior art tampons.
  • a tampon comprising an essentially cylindrical shape of non-woven material, characterised by being provided with an odd number of 7 or more longitudinal ribs and an odd number of 7 or more longitudinal grooves.
  • the term 'essentially cylindrical' is used herein for the shape of: the tampon, any tampon blank from which the tampon may be made, and any aperture for housing a tampon blank or tampon in the production of the latter.
  • the term 'aperture for housing a tampon blank' includes, for example any suitable apparatus component such as a conduit, duct, hole, opening or passageway, e.g. in a tampon press, defined by the dies that in use press a tampon blank.
  • Examples include tampons or blanks that are torpedo- or cigar- shaped, in which the curved ends may be even or smooth or again their circumferences may undulate and/or bulge or protrude locally.
  • the tampons of the invention are advantageous in that a tampon of any size, from mini through to the largest dimension, can be produced without the need to change the number of grooves between tampon sizes. 4 A further advantage is that the tampons of the invention have improved stability with reduced specific density.
  • the tampons of the invention will generally comprise a core of high-density material but wherein the longitudinal ribs are of low-density material.
  • the high-density core may be analogous to that described in EP-A-0422660.
  • it may comprise a central region of low-density material with a surrounding annular or toroidal region of high-density material.
  • the number of ribs and grooves in the tampon of the invention may be varied, provided that they represent an odd number of 7 or more. 25
  • each of the ribs and grooves may be 7, 9, 11 or greater.
  • tampons with 7 ribs and grooves are especially advantageous, and more especially if these are all of the same depth and equally spaced around the circumference of 30 the tampon blank.
  • a further preferred tampon feature is a 'density profile' of the tampon with a high-density core, e.g. analogous to that described in EP-
  • A-0422660 with a surrounding annular or toroidal region of low-density material in the outer ribs.
  • a process of manufacturing a tampon as hereinbefore described which comprises radially pressing an essentially cylindrical tampon blank over an odd number of 7 or more longitudinal portions which are mutually adjacent around the circumference of the tampon blank.
  • It also includes, for example a pressing that has a direction of movement with a component along a radius of the essentially cylindrical tampon blank, but also has, for example a component of its direction of movement that is tangential or along the circumference of the blank.
  • a tampon produced by this embodiment of the process for manufacturing a tampon as hereinbefore described has the general advantages inter alia of the tampons of the invention of improved stability with reduced specific density and of avoiding the need to change the number of grooves between tampon sizes.
  • a further advantage is that the tampons of from this embodiment of the process also have improved stability properties with greater inter fibre cohesion, owing to the rotary movement of the tampon blank.
  • a tampon of this type produced in this way with a compressed fibre core of greater specific density at the centre of the tampon compared with the outer is particularly advantageous.
  • the radial pressing of an odd number of 7 or more longitudinal portions that are mutually adjacent around the circumference is effected in a symmetrical and equidistant and/or concentric pressing action.
  • the radial pressing may however as desired be effected in one or more steps on the tampon blank, each pressing action to produce a tampon with the desired properties being a symmetrical and equidistant and/or concentric pressing action.
  • radial pressing to create nine identical longitudinal ribs and the same number of identical longitudinal grooves may be effected: a) in one step on the tampon blank, with nine simultaneous pressing actions to produce a tampon with the desired properties, or b) in two steps in an embodiment of the process characterised by using three symmetrical indentations to start the formation of the tampon with three pairs of subsequent symmetrical indentations interspersed between each pair of the first three, provided in a second step. All the indentations, whether provided in the first or second step, give rise to the longitudinal ribs and grooves that it is desired to create around the circumference of the tampon blank of the same depth.
  • An embodiment of the process for manufacturing a tampon as hereinbefore described that is designed to apply pressure to the tampon blank to produce the final tampon form in a single step is a preferred process.
  • One that also provides seven longitudinal ribs and grooves is especially advantageous, and more especially if these are all of the same depth and equally spaced around the circumference of the tampon.
  • a further preferred process feature is one designed to apply pressure to the tampon blank to produce the final tampon with a 'density profile' with a high-density core, e.g. analogous to that described in EP- A-0422660, with a surrounding annular or toroidal region of low-density material in the outer ribs.
  • the tampon blank used in the method and apparatus of the invention is generally produced by conventional method and apparatus known per se.
  • the tampon blank may comprise a strip of non-woven material wound in a 'Swiss-roll' fashion to produce an essentially cylindrical blank.
  • the strip material will usually comprise a sealing strip section at one edge of the strip material. This will be such that, when the strip material is rolled, the sealing strip section will remain on the outside of the rolled material. It can then be wrapped around the 'Swiss-roll' and sealed upon itself to produce the tampon blank.
  • the sealing strip section e.g. a liquid permeable thermoplastic strip section
  • thermoplastic strip may be of a greater or, more preferably, smaller, length than the circumference of the tampon blank, for example 50% of the circumference of the tampon blank.
  • Tampon blanks used herein may comprise bicomponent materials as described in the prior art. However, the blanks used herein may optionally be mono- or multi-, i.e. three or more, component materials.
  • a tampon press which comprises mutually adjacent dies defining the circumference of at least a part of an essentially cylindrical aperture for housing a tampon blank and capable of radial movement with respect to the tampon blank, characterised by being provided with an odd number of 7 or more dies.
  • the dies defining the circumference thus extend longitudinally along the essentially cylindrical aperture for housing a tampon blank.
  • the odd number of 7 or more dies defining the circumference will generally correspond to each of the odd number of 7 or more longitudinal ribs and odd number of 7 or more longitudinal grooves that it is desired to create around the circumference of the tampon blank.
  • the press is adapted to effect the process of the invention by radial pressing of an odd number of 7 or more longitudinal portions that are mutually adjacent around the circumference of the tampon blank.
  • this may be done in one or more steps on the tampon blank, the press being set up for a radial pressing action that is symmetrical and equidistant and/or concentric in each step.
  • the press may be set up to create nine identical longitudinal ribs and the same number of identical longitudinal grooves in one step on the tampon blank.
  • This has nine essentially identical jaws (also known as dies) in a symmetrical and equidistant and/or concentric array.
  • Tampons can also be produced using three essentially identical jaws (also known as dies) in a symmetrical and equidistant and/or concentric array to start the formation.
  • a press designed to apply pressure to the tampon blank to produce the final tampon form in a single step is a preferred tampon press.
  • One that also provides seven longitudinal ribs and grooves around the circumference of the tampon blank is particularly advantageous, and more especially if these are all of the same depth and equally spaced around the circumference of the tampon.
  • a further preferred press feature is one designed to apply pressure to the tampon blank to produce the final tampon with a 'density profile' with a high-density core, e.g. analogous to that described in EP-A- 0422660, with a surrounding annular or toroidal region of low-density material in the outer ribs.
  • the radial movement with respect to the tampon blank will be limited at the inwardmost section of traverse to leave a high-density core, optionally a mono- or multi-component core.
  • Such a limit at the inwardmost section of traverse may be adjusted so that the core is a denser multi-component core that comprises a central region of lower density material.
  • 'capable of radial movement' is not intended to be limiting to movement of any die only in a direction along a radius of the essentially cylindrical aperture for housing a tampon blank.
  • each die defining the aperture for housing a tampon blank is essentially a lever that is rotatable about a fixed fulcrum point.
  • the fulcrum and the lever are usually mounted such that the point of the die (also known as the press jaw) describes a series of gentle forward and backward arcuate strokes throughout the tampon pressing action.
  • Such an arcuate path will often be designed to pass through or near the longitudinal axis of the tampon blank.
  • Such an arcuate pressure designed to pass through or near the longitudinal axis of the tampon blank, together with adjustment of other parameters can allow or cause the tampon blank to rotate whilst being compressed.
  • Parameters that allow or cause the tampon blank to rotate whilst being compressed include the profile and depth of the press jaws in combination with the fibres used in making the tampon.
  • a tampon produced by this embodiment of the press which can allow or cause the tampon blank to rotate whilst being compressed, is a preferred tampon, as hereinbefore described.
  • the tampon press of the invention will thus preferably have such a fulcrum point for each die.
  • Such a press designed to apply pressure to the tampon blank to produce the final tampon form in a single step is a preferred tampon press.
  • One that also provides seven longitudinal ribs and grooves around the circumference of the tampon blank is particularly advantageous, and more especially if these are all of the same depth and equally spaced around the circumference of the tampon.
  • a further preferred press feature is one designed to apply pressure to the tampon blank to produce the final tampon with a 'density profile' with a high-density core, e.g. analogous to that described in EP-A- 0422660, with a surrounding annular or toroidal region of low-density material in the outer ribs.
  • Factors that are critical in effect on the density of the central region include the shape of the 'point' of the die and/or press jaws, the depth of the press jaws, the dwell time, and the fibre response and/or 'set' or 'memory' of the fibres used in making the tampon.
  • the pressure and dwell time in conjunction with the profile and depth of the press jaws can be varied in combination with the fibres used in making a tampon to achieve the structure that it is desired to create.
  • the process of the invention is designed to pass the tampon after radial pressing through an aperture for housing the tampon snugly and capable of further radial compression of the tampon. This consolidates and determines the essentially cylindrical outer profile of the tampon.
  • the 'lower specific density' 'lobe' points may be caused by such further processing to overlie the series of grooves around the circumference of the tampon even further to form inner void spaces.
  • the outer shape of the die determines the 'fill' of the fibre and/or non-woven materials of the 'lobes' of the tampon, as described hereinbefore.
  • tampon may be adjusted as desired in order to produce the required properties of the tampon, e.g. by selecting a suitable multi-component or mono-component material for the blanks used herein.
  • the shape of the 'void' space created should determine the outer profile of the tampon in the 'lower specific density' 'lobe' points of the tampon.
  • a particularly preferred tampon press is a seven-jaw press with the particular type of profile and depth of the press jaws shown in the accompanying drawings.
  • the press will usually comprise a conventional cam action for actuating the jaws.
  • the aperture for housing a tampon blank may extend for example before and/or after the component part defined by the dies.
  • the component part defined by the dies will usually be essentially of the same length and diameter as the tampon blank, and thus usually of essentially uniform diameter.
  • the part of the aperture for housing a tampon blank that extends for example before and/or after the component part defined by the dies may taper.
  • Such a tapering part after or before the part defined by the dies thus presses radially around the circumference of the tampon and/or tampon blank as it transits that tapering part.
  • Any such portion of the aperture for housing a tampon blank that extends for example before and/or after the component part defined by the dies may of course also be of essentially uniform diameter over all or part of its length.
  • Figure 1 is an axial view of the jaws of a nine-jaw press in 'open' position
  • Figure 4 is an axial view of the jaws of the same nine-jaw press fully 'closed';
  • Figures 2 and 3 are views of the jaws of the same nine-jaw press at two stages of its use in the process of the invention Intermediate between the view of the same in Figures 2 and 3; and
  • Figure 5 is an axial view of the jaws and the cam for actuating the jaws of a seven-jaw tampon press with the jaws in 'closed' position in its use in the process of the invention.
  • a tampon press (1) comprises a series of fulcrum spindles (6) mounted in an array in which they are mutually equidistant around the circumference of a cylinder concentric with the longitudinal axis (2) of the tampon press (1), and parallel to the axis (2) of the tampon press (1 ).
  • a series of essentially identical jaw lever arms (8) each has a boss (3) with and aperture (4) (not shown) for housing a fulcrum spindle (6), a surface (9) and shoulder (10), and also a die point (11 ), the profile of which determines the outer profile of the product tampon in particular of the lower-density' 'lobe' points of the tampon.
  • the press jaws (8) are each mounted with its boss (3) housing a fulcrum spindle (6), and with its surface (9) touching the shoulder (10) of an adjacent jaw lever arms (8) is mounted such that each is point.
  • Each jaw lever arms (8) is thus rotatable about a fulcrum spindle (6) and the die points (11 ) define the circumference of a cylindrical aperture (12) for housing a tampon blank (5), which extends the length of the blank (5).
  • a tampon blank (5) is pressed by the series of dies (7).
  • each jaw lever arm (8) describes a circular arc in a gentle forward stroke, with its shoulder (10) sliding along the surface (9) of an adjacent arm (8).
  • This is shown in Figure 1 through Figures 2 and 3 to Figure 4, to define in particular the lower specific density' 'lobe' points of the tampon.
  • This is followed by the backward stroke, as shown in Figure 4 through Figures 3 and 2 to Figure 1 , to return the nine-jaw press to the 'open' position for the press cycle to be repeated on the a different or the same tampon.
  • a cam (19) operates the lever at 'A (another larger circle) in a series of gentle upward and downward strokes.
  • the cam (19) can be designed to indent, dwell, return, impress and finish off the tampon as desired in order to produce the required properties of the tampon.
  • One partial rotation of the cam to the next jaw is equivalent to the pressing of one tampon.
  • the cam lever attachment can be made in a variety of ways.

Landscapes

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

Abstract

L'invention concerne un tampon hygiénique en 'étoile' présentant une forme sensiblement cylindrique et constitué de matière non tissée. Ce tampon comporte un nombre impair, supérieur ou égal à 7, de nervures longitudinales et un nombre impair, supérieur ou égal à 7, de rainures longitudinales. L'invention se rapporte à un procédé de fabrication d'un tel tampon, qui consiste à comprimer radialement une ébauche de tampon sensiblement cylindrique sur un nombre impair, supérieur ou égal à 7, de parties longitudinales, tout en laissant ou en faisant tourner l'ébauche de tampon pendant la compression. L'invention se rapporte enfin à une presse à tampon conçu pour la fabrication d'un tel tampon, qui comporte un nombre impair, supérieur ou égal à 7, de filières adjacentes les unes aux autres et susceptibles de se déplacer radialement, qui définissent la circonférence d'au moins une partie d'une ouverture sensiblement cylindrique permettant de loger une ébauche de tampon.
EP00909477A 1999-03-11 2000-03-10 Tampon hygienique Withdrawn EP1185227A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9905470 1999-03-11
GBGB9905470.2A GB9905470D0 (en) 1999-03-11 1999-03-11 Absorbent articles
PCT/GB2000/000891 WO2000053141A1 (fr) 1999-03-11 2000-03-10 Tampon hygienique

Publications (1)

Publication Number Publication Date
EP1185227A1 true EP1185227A1 (fr) 2002-03-13

Family

ID=10849322

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00909477A Withdrawn EP1185227A1 (fr) 1999-03-11 2000-03-10 Tampon hygienique

Country Status (4)

Country Link
EP (1) EP1185227A1 (fr)
AU (1) AU3175900A (fr)
GB (1) GB9905470D0 (fr)
WO (1) WO2000053141A1 (fr)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10114786C2 (de) * 2001-03-26 2003-07-17 Johnson & Johnson Gmbh Tampon für die Frauenhygiene sowie Verfahren und Vorrichtung zur Herstellung desselben
DE10151758C2 (de) * 2001-10-19 2003-08-21 Ruggli Projects Ag Hagendorn Verfahren sowie Vorrichtung zum Herstellen eines Tampons
DE10244874C5 (de) 2002-09-26 2010-10-07 Johnson & Johnson Gmbh Verfahren und Einrichtung zur Herstellung eines Tampons für die Frauenhygiene
EP1547554A1 (fr) * 2003-12-22 2005-06-29 Ontex N.V. Article absorbant
EP2774589A1 (fr) 2003-12-22 2014-09-10 Ontex Hygieneartikel Deutschland GmbH Article absorbant
ATE526922T1 (de) 2005-01-19 2011-10-15 Ontex Internat N V Tampon
DE602005009798D1 (de) 2005-03-25 2008-10-30 Georgia Pacific France Tampon und Applikatoranordnung
DE102008020640B4 (de) 2008-04-24 2010-09-09 Frank Ruhlmann Tampon
AT508682B1 (de) * 2009-08-24 2015-11-15 Ruggli Projects Ag Presse zur herstellung eines tampons
EP2404584B2 (fr) 2010-07-09 2023-09-27 Ontex Hygieneartikel Deutschland GmbH Tampon disposé avec des rainures et indentations longitudinales
WO2012004315A1 (fr) 2010-07-09 2012-01-12 Ontex Hygieneartikel Deutschland Gmbh Presse et procédé pour produire un article absorbant
US9078787B2 (en) 2012-09-28 2015-07-14 Kimberly-Clark Worldwide, Inc. Shutter press compressor with shaping elements
US9072628B2 (en) 2012-09-28 2015-07-07 Kimberly-Clark Worldwide, Inc. Shutter press compressor
US9072629B2 (en) * 2012-09-28 2015-07-07 Kimberly-Clark Worldwide, Inc. Shutter press compressor with movable jaws
IL285936B2 (en) 2019-03-01 2024-10-01 Tampro Inc Reduced-leakage tampon
USD977632S1 (en) 2020-02-26 2023-02-07 Tampro Inc. Tampon
USD1039690S1 (en) 2020-09-01 2024-08-20 Tampro Inc. Tampon
WO2022051228A1 (fr) 2020-09-01 2022-03-10 Tampro Inc. Tampon à fuite réduite
USD1046123S1 (en) 2023-04-28 2024-10-08 Tampro Inc. Tampon

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4175561A (en) * 1977-02-10 1979-11-27 Hirschman Shalom Z Feminine hygienic pads with improved absorption
DE4304505C2 (de) * 1993-02-15 1995-05-18 Johnson & Johnson Gmbh Tampon, insbesondere für die Frauenhygiene, sowie Verfahren und Vorrichtung zur Herstellung desselben
DE4325220C2 (de) * 1993-07-28 1996-08-29 Ruggli Ag Karl Tampon sowie Verfahren und Vorrichtung zu seiner Herstellung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0053141A1 *

Also Published As

Publication number Publication date
AU3175900A (en) 2000-09-28
WO2000053141A1 (fr) 2000-09-14
GB9905470D0 (en) 1999-05-05

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