US3710420A - Method for forming themain body of a catamenial tampon - Google Patents

Method for forming themain body of a catamenial tampon Download PDF

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Publication number
US3710420A
US3710420A US00053733A US3710420DA US3710420A US 3710420 A US3710420 A US 3710420A US 00053733 A US00053733 A US 00053733A US 3710420D A US3710420D A US 3710420DA US 3710420 A US3710420 A US 3710420A
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United States
Prior art keywords
wad
dies
stem
transverse
forming
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Expired - Lifetime
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US00053733A
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English (en)
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A Yamauchi
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Individual
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Individual
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    • 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
    • A61F13/206—Tampons made of rolled-up material

Definitions

  • ABSTRACT A wad of fibrous material provided with a pulling string and a stem inserted therein with its one end projected outward is first compressed from opposite sides by a pair of side dies and then compressed from the front and rear by a pair of transverse dies so as to obtain a cylindrical main body of a tampon. By carrying out these two steps of compression separately, the fibrous body obtained, when used, can be swollen into an elliptical or spindlelike shape in fitting contact with the vagina.
  • the present invention relates to a method for forming the main body of a catamenial tampon by compressing a fibrous material.
  • the material was usually compressed into a cylindrical shape by applying external pressure thereon uniformly in radial directions by means of several pieces of pressing dies.
  • An object of the present invention is to provide the main body of a catamenial tampon which is so adapted that when permeated with fluids, the tampon can be deformed into an elliptical or spindlelike form in cross section resembling the cross-sectional configuration of the vagina, the present tampon thus being rendered highly efficie'nt and comfortable to use.
  • Another important object of the present invention is to provide the main body of a catamenial tampon which is completely compressed from its surface layer up to the core thereof and which is therefore least susceptible to fluffing or deformation before absorption of fluids.
  • Still another object of the present invention is to provide the main body of a catamenial tampon which has a smooth surface without edgelike projections so as to insure greater amenability to surface coating.
  • the present invention provides a method for forming a main body of tampon comprising steps of placing a wad of fibrous material between a pair of side dies disposed in facing relationship with each other, the fibrous material being provided with a suitable pulling string and a stem inserted therein at its center an axial direction withone end projected outward therefrom; subjecting said fibrous material to a first step of compression by mov-' ing the side dies toward each other; and subjecting the fibrous material thus obtained to a second step of com pression by pressing the material from the front and rear thereof so. as to produce a cylindrical body.
  • the cylindrical fibrous body may further be compressedin axial direction by upper and lower dies to be brought -into the cylindrical opening defined by the side dies and transverse dies.
  • the tampon main body obtained can be deformed into an elliptical or spindlelike shape in section when permeated with menstrual fluids during use, thisinsuring snug-fit contact with the vagina for prevention of leakage of the fluids.
  • FIG. 1 is a perspective view showing a fibrous material of tampon before compressing
  • FIG. 2 is a perspective view showing an apparatus for forming the material into the main body of tampon
  • FIG. 3 is a plan view in horizontal section showing the fibrous material as it has been subjected to a first step of compression by movable side dies;
  • FIG. 4 is a plan view in horizontal section showing the material as it has been subjected to a second step of compression by transverse dies subsequent to the first step of compression;
  • FIG. 5 is a view in vertical section illustrating a third step of compression conducted by a pressing die as sembly including pressing rods, the view being taken along the centerline of the die assembly.
  • the tampon main body of the present invention comprises a fibrous material cut to a rectangular shape and a suitable string 2 attached to the fibrous material as by engagement or stitching as shown in FIG. 1.
  • the fibrous material provided with the string 2 is then longitudinally folded into a roll to obtain a fibrous wad la, into'which a stem 7 to be described later is inserted before it is compressed by a forming apparatus as shown in FIG. 2;
  • the forming apparatus comprises side dies 4, 4 adapted to be moved on guides 3, 3, a pair of transverse dies 5,5 each having a concave recess of a semicircular cross section along its inner end and adapted to be slidably moved on the inner surfaces of the side dies 4,
  • the upper pressing die 6 is formed with a hole 8 .for inserting the stem 7, while the lower pressing die 6' is formed with a semispherical recess at its end facing the bottom of the upper die 6.
  • Designated at 9 and 10 are pushing bars for the respective dies.
  • An important feature of the present invention is the provision of the stem 7 of elliptical cross section which is coaxially inserted into the center of the fibrous wad la, thestem 7 being so disposed that the longer diameter thereof is positioned parallel to the side wall of the side die 4, with the upper end 7' projected outward.
  • stem 7 may be placed into the fibrous wad Ia before compression as already described, intended results will be obtained insofar as it is inserted at least prior to the second step of compression to be described below.
  • the movable side dies 4, 4 are first moved toward each other with the fibrous wad la placed therebetween, whereby the wad 1a is compressed from the opposite sides, with the stem 7 disposed therebetween, to obtain a pillarlike body lb resembling a rectangle in'cross section as seen in FIG. 3.
  • the transverse dies 5, 5 are then actuated.
  • the body lb is now compressed into a cylindrical body 10 as shown in FIG. 4 by the dies 5, 5 guided on the inner .faces of the side dies 4, 4.
  • the tact with the vaginal wall for reliable prevention of leakage of menstrual fluids, uncomfortable feel during use being also substantially mitigated
  • the cylindrical body 1c obtained by the second step of compression is further compressed in axial direction into a tampon main body 1d of a short length by the upper and lower dies 6, 6' as seen in FIG. 5.
  • the upper pressing die 6 and the lower pressing die 6 are moved toward each other in sliding contact with the cylindrical opening wall which is defined by the side dies 4, 4 and transverse dies 5, 5, the upper end 7' of the stem 7 passing through the hole 8 of the upper die 6.
  • the third step of compression to be performed by the upper and lower dies 6, 6 as described above can be omitted by providing stationary dies which are adapted to define the upper and lower ends of the cylindrical body lc during the second step of compression by transverse dies 5, 5.
  • Such arrangement of the die assembly also insures substantially effective compression.
  • a separately prepared rod may be inserted into the hole formed by the stem 7, when the tampon is to be applied to the vagina, insertion of the tampon into the vagina thus being facilitated.
  • the hole which is elliptical in cross section, serves to indicate the direction in which marked swelling of tampon takes place.
  • a method for forming a cylindrical main body of a tampon comprising the steps of:
  • a forming apparatus comprising a pair of substantially flat surfaced side dies disposed in facing relationship with each other, a pair of transverse dies each having a concave recess of a semicircular cross section disposed in facing relationship with each other transverse to said side dies, and upper and lower pressing dies one of which has on an inner surface thereof a semispherical recess and the other of which has therethrough a hole dimensioned to receive said stem, said wad being positioned within said apparatus such that the longer diameter sides of said elliptically cross sectioned stem are parallel with the substantially flat surfaces of said side dies;

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  • 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)
US00053733A 1969-07-19 1970-07-10 Method for forming themain body of a catamenial tampon Expired - Lifetime US3710420A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP44057301A JPS508277B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1969-07-19 1969-07-19

Publications (1)

Publication Number Publication Date
US3710420A true US3710420A (en) 1973-01-16

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Family Applications (1)

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US00053733A Expired - Lifetime US3710420A (en) 1969-07-19 1970-07-10 Method for forming themain body of a catamenial tampon

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US (1) US3710420A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS508277B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE2035965C3 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB1272158A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3845767A (en) * 1972-08-18 1974-11-05 Hahn C Gmbh Tampon for feminine hygiene
US6003216A (en) * 1997-03-31 1999-12-21 Mcneil-Ppc, Inc. Domed compressed tampons
EP1108407A1 (en) * 1999-12-14 2001-06-20 The Procter & Gamble Company Tampon having an oval form after expansion and process for producing the same
US6283952B1 (en) * 1992-12-30 2001-09-04 Tambrands, Inc. Shaped tampon
EP1125570A3 (de) * 2000-02-10 2002-12-11 HYSALMA Hygiene Sales & Marketing GmbH Tampon
US20030208180A1 (en) * 1999-12-14 2003-11-06 Sybille Fuchs Tampon having an oval form after expansion and process for producing the same

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES192039Y (es) * 1973-05-19 1974-12-16 Arbora International, S. A. Tampon vaginal.

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU110738A (en) * 1938-03-18 1939-02-02 Hugo Skinnard Schild Johann Improvements in stump jump cultivating implements
GB557035A (en) * 1939-07-15 1943-11-02 Henry Hodges Hall An intra-vaginal menstrual appliance
US2464310A (en) * 1945-08-25 1949-03-15 Int Cellucotton Products Method of making tampons
US2926394A (en) * 1956-04-13 1960-03-01 Kimberly Clark Co Method for making a cellulosic product
US3068867A (en) * 1959-01-02 1962-12-18 Kimberly Clark Co Cellulosic product

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS444240Y1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1966-04-11 1969-02-17
JPS442400Y1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1966-04-11 1969-01-29

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU110738A (en) * 1938-03-18 1939-02-02 Hugo Skinnard Schild Johann Improvements in stump jump cultivating implements
GB557035A (en) * 1939-07-15 1943-11-02 Henry Hodges Hall An intra-vaginal menstrual appliance
US2464310A (en) * 1945-08-25 1949-03-15 Int Cellucotton Products Method of making tampons
US2926394A (en) * 1956-04-13 1960-03-01 Kimberly Clark Co Method for making a cellulosic product
US3068867A (en) * 1959-01-02 1962-12-18 Kimberly Clark Co Cellulosic product

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3845767A (en) * 1972-08-18 1974-11-05 Hahn C Gmbh Tampon for feminine hygiene
US6283952B1 (en) * 1992-12-30 2001-09-04 Tambrands, Inc. Shaped tampon
US6003216A (en) * 1997-03-31 1999-12-21 Mcneil-Ppc, Inc. Domed compressed tampons
US6299573B1 (en) * 1997-03-31 2001-10-09 Eil-Ppc, Inc. Domed compressed tampons
EP1108407A1 (en) * 1999-12-14 2001-06-20 The Procter & Gamble Company Tampon having an oval form after expansion and process for producing the same
WO2001043680A1 (en) * 1999-12-14 2001-06-21 The Procter & Gamble Company Tampon having an oval form after expansion and process for producing the same
US20030208180A1 (en) * 1999-12-14 2003-11-06 Sybille Fuchs Tampon having an oval form after expansion and process for producing the same
US6953456B2 (en) 1999-12-14 2005-10-11 The Procter & Gamble Company Tampon having an oval form after expansion and process for producing the same
EP1125570A3 (de) * 2000-02-10 2002-12-11 HYSALMA Hygiene Sales & Marketing GmbH Tampon

Also Published As

Publication number Publication date
DE2035965A1 (de) 1971-02-04
DE2035965C3 (de) 1979-12-13
GB1272158A (en) 1972-04-26
JPS508277B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1975-04-03

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