New! View global litigation for patent families

US3520302A - Tampon - Google Patents

Tampon Download PDF

Info

Publication number
US3520302A
US3520302A US3520302DA US3520302A US 3520302 A US3520302 A US 3520302A US 3520302D A US3520302D A US 3520302DA US 3520302 A US3520302 A US 3520302A
Authority
US
Grant status
Grant
Patent type
Prior art keywords
string
tampon
cylinder
yarn
sponge
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
Inventor
John Leslie Jones
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.)
Kimberly-Clark Corp
Original Assignee
Kimberly-Clark 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
Grant date

Links

Images

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F13/00Bandages or dressings; Absorbent pads
    • A61F13/15Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
    • A61F13/20Tampons, e.g. catamenial tampons; Accessories therefor
    • A61F13/2051Tampons, e.g. catamenial tampons; Accessories therefor characterised by the material or the structure of the inner absorbing core
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S604/00Surgery
    • Y10S604/904Tampons

Description

J. L. JONES July M, 1970 'TAMPON Filed Feb. 13, 1967 INVENTOR United States Patent Oifice 3,520,302 Patented July 14, 1970 3,520,302 TAMPON John Leslie Jones, Pasadena, Calif., assignor to Kimberly- Clark Corporation, Neenah, Wis., a corporation of Delaware Continuation-impart of application Ser. No. 350,193, Mar. 9, 1964. This application Feb. 13, 1967, Ser. No. 619,509

Int. Cl. A61f 13/20 US. Cl. 128-285 9 Claims ABSTRACT OF THE DISCLOSURE A one-piece regenerated cellulose sponge tampon having a withdrawal string coaxially disposed through the length of the tampon body and permanently bonded to the tampon along its length, with an end of the strip extending beyond one end of the tampon to provide handle means.

This application is a continuation-in-part of my copending application on tampons, Ser. No. 350,193, filed Mar. 9, 1964, now US. Pat. No. 3,342,237. My present invention relates to new and useful improvements in a menstrual tampon.

The principal object of my invention is to provide a menstrual tampon containing a coaxial withdrawal string permanently bonded therein.

Further objects and advantages of my invention will become apparent in the following description, to be read in connection with the accompanying drawings.

My earlier copending application, Ser. No. 350,193 teaches a dry, radially compressed, regenerated fine pore cellulose sponge, having a coaxial withdrawal string disposed in the length of the cylinder, and forming a menstrual tampon.

FIG. 1(a) is a perspective view of a radially compressed menstrual tampon of my invention. FIG. 1(b) is a perspective and partial sectional view of an uncompressed, or fully expanded, menstrual tampon of my invention, showing details of my withdrawal string structure. The relative diameters of the tampons of FIG. 1(b) and FIG. 1(a) show the relative diameter of my tampons before and after radial compression of the one-piece, regenerated cellulose sponge. FIG. 1(0) shows enlarged details of my withdrawal string structure, in use in my tampon.

Referring to FIG. 1(a) in detail the menstrual tampon 1 comprises a dry, radially compressed, minimum pore volume, regenerated cellulose cylinder 2, and withdrawal string 3 coaxially located in and along the cylinder axis length and extending beyond the cylinder, forming a string handle 6. FIG. 1(b) shows more detail of my tampon invention, being a perspective and partial cross section view of the dry, fine-pore, expanded, regenerated cellulose, polygonal cross section cylinder 2', prior to radial compression to form the cylinder 2. The coaxially located withdrawal string 3, shown in the cylinder 2', is also coaxially surrounded by a permanent bond means 4 extending the length of the cylinder 2. The cylinder 2' has area ends 5 and 5'. The permanent bond means 4 is an annular cylindrical shaped zone which is shown in enlarged cross sectional detail in FIG. 1(a), taken through 1c1c of FIG. 1(b).

I have found that the permanent bond means 4 can comprise a thermally fused bond formed between a fused yarn structure of the withdrawal string and the regenerated cellulose sponge structure. The fused yarn is cooled to room temperature to form a permanent bond means 4. I have also found that the permanent bond means 4 can be formed by a hot melt adhesive, cooled to room temperature to form a bond between the withdrawal string and the regenerated cellulose sponge structure. My permanent bond means 4 provides a bond between the withdrawal string and the regenerated cellulose sponge which will withstand the stresses of commercial storage conditions, immersion in menstrual fluid and the force required to remove a wet used tampon from a vagina.

I have found that a bifilament withdrawal string made of 50 wt. percent regenerated cellulose rayon yarn-50 wt. percent cellulose acetate yarn, made in a conventional 2 ply with a wet strength of 6.5 lbs., is a representative bifilament yarn or string useful in my invention.

By using such an above described bifilament yarn as the withdrawal string 3 in the cylinder 2, I may then thermally fuse or melt the cellulose acetate yarn in the string 3. On cooling the fused yarn, the solidifying cellulose acetate yarn melt will bond to both the rayon yarn and the regenerated cellulose sponge, particularly if the sponge is rapidly radially compressed, before the fused yarn begins to solidify. I use a second non-melting or nonthermally decomposing yarn as a second filament in the bifilament yarn structure, to provide a second strength member of the bifilament yarn which will not fuse. A fusible yarn used alone may stress crack on cooling, possibly breaking off the withdrawal string on application of the force required to withdraw a used tam pon from a vagina, the non-fusing yarn will not break ofl.

Cotton yarn plied with cellulose acetate yarn is also a suitable bifilament yarn construction for my withdrawal string 3. Cotton yarn plied with polyvinyl chloride yarn; also regenerated rayon plied with nylon yarn, or like combinations of fusible yarns plied with non-fusible yarns can be used to make my withdrawal string 3. The bifilament yarns form a permanent bond means 4 on application of the required heat of fusion for the fusible yarn, followed by rapid radially compressing the cylindrical tampon, and allowing the fused yarn to cool and solidify.

I have likewise found that a hot melt adhesive can coat, or impregnate and coat, a non-fusible string, forming a string composition which is not melted or sticky at body temperature, or soluble in menstrual fluid. A typical mercerized cotton string impregnated and coated with a plasticized cellulose diacetate composition can be used to form a suitable string 3. The above cotton string, with the plastized cellulose acetate coating thereon. is preheated prior to location in the sponge billet, but not to the coating fusion temperature. After locating the preheated, coated cotton string in the sponge cylinder, both the sponge cylinder 2 and the coated string are further heated above the fusion temperature of the cellulose acetate coating and then rapidly compressed. The compressive force aids the formation of a strong permanent bond means 4 between the withdrawal string 3 and the sponge cylinder 2, when the string 3 and sponge cylinder 2 are cooled to room temperature.

Other non-fusible yarns or strings, selected from cotton, linen, hemp, regenerated cellulose rayon or the like, can be combined with hot melt adhesive coatings. Suitable hot melt coating are plasticized vinyl chloride resin, plasticized vinyl acetate-vinyl chloride copolymer, plasticized collulose acetate butyrate, polyethylene or the like fusible coatings. My hot melt coatings should not fuse or lose bonding strength at human body or commercial storage temperatures, yet should be readily fusible at the higher temperatures to which the regenerated cellulose spronge can be heated without decomposing the sponge. Controlled heating of all bond components can effect a good bond between the sponge, the cooled and solidified hot melt coating, and the non-fusible, yarn or string.

My invention uses dry, expanded, regenerated cellulose sponge of fine pore structure as a basic raw material. I

3 defined expanded, fine pore regenerated cellulose sponge as the dry sponge of fully distended pore structure, not yet subjected to a compressive force which collapses the pore dimensions.

Typically, my white spronge has pores in the dry, expanded state ranging from 0.5 to 2.0 mm. diameter and the like, and a 1 mm. pore diameter is common. A typical dry, expanded regenerated cellulose sponge density is 0.029 g./cc. When fully saturated with water the typical regenerated cellulose sponge density is 1.00 g./cc., so a fully saturated wet sponge may absorb approximately 0.97 g./cc. of Water or relatively similar density menstrual fluid.

My dry, radially compressed minimum pore volume, regenerated cellulose tampons, having coaxially located withdrawal strings permanently bonded the length of the sponge cylinder, have been tested in menstrual absorption application with very favorable results. The small diameter radially compressed sponge cylinder does not cause discomfort in females and is easily inserted by a correspondingly sized conventional pair of telescoping paper tubes. The sponge tampon expands on absorption of menstrual fluid and is removed by pulling on the permanently bonded withdrawal string 3, or the like. The wet sponge is soft and pliable, and does not damage or tear tissue. If the menstrual fluid is insutficient to fully wet the tampon, the dry portion of the tampon does not expand, and hence is easily removed from the vagina.

Typical absorption test data is listed below in Table I. The data clearly establish the use of my tampon to absorb a daily menstrual flow at the range of normal flow rate in a normal use pattern, without discomfort. In addition, the relative small diameter of my radially compressed tampons are supported in Table II by the comparison of my sponge tampon diameters, before and after radial compression to a minimum pore volume. I compare both dry, expanded regular hexagon polygons and circular cross section tampons, since for my purpose I classify a circle as an infinite sided polygon. The radial compression ratio is substantially constant, independent of the tampon expanded cross section diameter.

TABLE I.-TAMPON PERFO RMANCE Dry blank \vt.=0.9 gram 0 P.M 0 PJVI Test N0. 2.Tampon size: in. round X 2% in. long Dry blank wt.=0.8 gram I claim:

1. A menstrual tampon comprising: a dry, radially compressed, minimum pore volume, regenerated cellulose cylinder; a withdrawal string coaxially disposed through the length of said cylinder and extending from one end of said cylinder to form a handle means; and a permanent bond means coaxially surrounding said string and securing said string to said cylinder along the length of said cylinder.

2. The menstrual tampon of claim 1 in which a thermally fused bond secures said string to said cylinder.

3. The menstrual tampon of claim 1 in which an adhesive bond secures said string to said cylinder.

4. A menstrual tampon comprising: a dry, expanded, fine pore, regenerated cellulose sponge, polygonal crosssection cylinder; a Withdrawal string coaxially disposed through the length of said cylinder and extending from one end of said cylinder to form a handle means; and a permanent bond means coaxially surrounding said string and securing said string to said cylinder along the length of said cylinder.

5. The menstrual tampon of claim 4 in which a thermally fused bond secures said string to said cylinder.

'6. The menstrual tampon of claim 4 in which an adhesive bond secures said string to said cylinder.

7. The menstrual tampon of claim 2 in which said string is comprised at least in part of fusible material.

8. The menstrual tampon of claim 7 in which said string comprises a bifilament yarn in which one filament is fusible and one filament is non-fusible.

9. The menstrual tampon of claim 3 in which said string is comprised of non-fusible yarn coated with a hot melt adhesive.

References Cited UNITED STATES PATENTS 2,298,752 10/1942 Crockford 128263 2,458,685 1/1949 Crockford l28263 2,880,726 4/1959 Stieg 128285 2,884,925 5/1959 Meynier 128285 3,347,237 10/1967 Jones 128285 CHARLES F. ROSENBAUM, Primary Examiner US. Cl. X.R.

US3520302A 1967-02-13 1967-02-13 Tampon Expired - Lifetime US3520302A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US61950967 true 1967-02-13 1967-02-13

Publications (1)

Publication Number Publication Date
US3520302A true US3520302A (en) 1970-07-14

Family

ID=24482202

Family Applications (1)

Application Number Title Priority Date Filing Date
US3520302A Expired - Lifetime US3520302A (en) 1967-02-13 1967-02-13 Tampon

Country Status (1)

Country Link
US (1) US3520302A (en)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3625787A (en) * 1969-08-11 1971-12-07 Kimberly Clark Co Method of attaching withdrawal string to a sponge tampon
DE2207152A1 (en) * 1971-02-17 1972-09-21
US3794024A (en) * 1972-05-17 1974-02-26 Procter & Gamble Catamenial wetness indicator
US4266546A (en) * 1980-02-25 1981-05-12 Kimberly-Clark Corporation Wrapped folded tampons
US4328804A (en) * 1978-11-16 1982-05-11 Kazuo Shimatani Hygienic tampon and tampon applicator
US4405324A (en) * 1981-08-24 1983-09-20 Morca, Inc. Absorbent cellulosic structures
US4743237A (en) * 1986-12-18 1988-05-10 Kimberly-Clark Corporation Container having securely-attached handling cord and method and apparatus for producing the container
US4775377A (en) * 1986-12-18 1988-10-04 Kimberly-Clark Corporation Container having securely-attached handling cord and method and apparatus for production of container
US5800338A (en) * 1994-04-18 1998-09-01 Coloplast A/S Tampon or closure device for body passageways of animal or human beings
US6142984A (en) * 1997-12-30 2000-11-07 Playtex Products, Inc. Removal string for tampon pledget
US20040243088A1 (en) * 2003-05-02 2004-12-02 Playtex Products, Inc. Tampon assembly having shaped pledget
US20050124072A1 (en) * 2003-12-05 2005-06-09 Kimberly-Clark Worldwide, Inc. Personal care products with visual indicator of vaginitis
US20060127459A1 (en) * 2004-12-15 2006-06-15 Lei Huang Urogenital infection inhibition
US20070134747A1 (en) * 2005-12-14 2007-06-14 Kimberly-Clark Worldwide, Inc. Detection of secreted lipase proteins from Candida species
US20070134743A1 (en) * 2005-12-14 2007-06-14 Kimberly-Clark Worldwide, Inc. Detection of secreted aspartyl proteases from Candida species
US20070167902A1 (en) * 2003-05-02 2007-07-19 Playtex Products, Inc. Tampon assembly having shaped pledget
US20080058751A1 (en) * 2006-08-29 2008-03-06 Playtex Products, Inc. Tampon removal device
US20090069769A1 (en) * 2007-09-12 2009-03-12 Ryo Minoguchi Wrapper having a tab
US9279140B2 (en) 2009-02-06 2016-03-08 Kimberly-Clark Worldwide, Inc. Personal care products with visual indicator of vaginitis
US9662249B2 (en) 2002-09-12 2017-05-30 Edgewell Personal Care Brands, Llc. Ergonomic tampon applicator
US9820890B2 (en) 2006-06-12 2017-11-21 Edgewell Personal Care Brands, Llc. Tampon assembly providing proper bodily placement of pledget

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2298752A (en) * 1941-04-18 1942-10-13 Joseph R Crockford Tampon
US2458685A (en) * 1945-12-14 1949-01-11 Harry Radzinsky Method of making tampons
US2880726A (en) * 1954-01-04 1959-04-07 Fred B Stieg Cellulose sponges
US2884925A (en) * 1956-07-26 1959-05-05 Jr Maurice J Meynier Tampon and depositor
US3347237A (en) * 1964-03-09 1967-10-17 Jones John Leslie Compressed catamenial tampon of regenerated cellulose

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2298752A (en) * 1941-04-18 1942-10-13 Joseph R Crockford Tampon
US2458685A (en) * 1945-12-14 1949-01-11 Harry Radzinsky Method of making tampons
US2880726A (en) * 1954-01-04 1959-04-07 Fred B Stieg Cellulose sponges
US2884925A (en) * 1956-07-26 1959-05-05 Jr Maurice J Meynier Tampon and depositor
US3347237A (en) * 1964-03-09 1967-10-17 Jones John Leslie Compressed catamenial tampon of regenerated cellulose

Cited By (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3625787A (en) * 1969-08-11 1971-12-07 Kimberly Clark Co Method of attaching withdrawal string to a sponge tampon
DE2207152A1 (en) * 1971-02-17 1972-09-21
US3736935A (en) * 1971-02-17 1973-06-05 Codman & Shurtleff Surgical sponge
US3794024A (en) * 1972-05-17 1974-02-26 Procter & Gamble Catamenial wetness indicator
US4328804A (en) * 1978-11-16 1982-05-11 Kazuo Shimatani Hygienic tampon and tampon applicator
US4266546A (en) * 1980-02-25 1981-05-12 Kimberly-Clark Corporation Wrapped folded tampons
US4405324A (en) * 1981-08-24 1983-09-20 Morca, Inc. Absorbent cellulosic structures
US4845922A (en) * 1986-12-18 1989-07-11 Kimberly-Clark Corporation Method and apparatus for forming an article having a securely-attached string
US4743237A (en) * 1986-12-18 1988-05-10 Kimberly-Clark Corporation Container having securely-attached handling cord and method and apparatus for producing the container
US4775377A (en) * 1986-12-18 1988-10-04 Kimberly-Clark Corporation Container having securely-attached handling cord and method and apparatus for production of container
US5800338A (en) * 1994-04-18 1998-09-01 Coloplast A/S Tampon or closure device for body passageways of animal or human beings
US6142984A (en) * 1997-12-30 2000-11-07 Playtex Products, Inc. Removal string for tampon pledget
US9662249B2 (en) 2002-09-12 2017-05-30 Edgewell Personal Care Brands, Llc. Ergonomic tampon applicator
US9737443B2 (en) 2002-09-12 2017-08-22 Edgewell Personal Care Brands, Llc Ergonomic tampon applicator
US20040243088A1 (en) * 2003-05-02 2004-12-02 Playtex Products, Inc. Tampon assembly having shaped pledget
US8197434B2 (en) 2003-05-02 2012-06-12 Playtex Products, Inc. Tampon assembly having shaped pledget
US20070167902A1 (en) * 2003-05-02 2007-07-19 Playtex Products, Inc. Tampon assembly having shaped pledget
US9192522B2 (en) 2003-05-02 2015-11-24 Eveready Battery Company, Inc. Tampon assembly having shaped pledget
US7592020B2 (en) 2003-12-05 2009-09-22 Kimberly-Clark Worldwide, Inc. Personal care products with visual indicator of vaginitis
US20050124072A1 (en) * 2003-12-05 2005-06-09 Kimberly-Clark Worldwide, Inc. Personal care products with visual indicator of vaginitis
US8518374B2 (en) 2004-10-08 2013-08-27 Kimberly-Clark Worldwide, Inc. Personal care products with visual indicator of vaginitis
US20090143754A1 (en) * 2004-10-08 2009-06-04 Rameshbabu Boga Personal Care Products with Visual Indicator of Vaginitis
US20060127459A1 (en) * 2004-12-15 2006-06-15 Lei Huang Urogenital infection inhibition
US7745158B2 (en) 2005-12-14 2010-06-29 Kimberly-Clark Worldwide, Inc. Detection of secreted aspartyl proteases from Candida species
US20070134747A1 (en) * 2005-12-14 2007-06-14 Kimberly-Clark Worldwide, Inc. Detection of secreted lipase proteins from Candida species
US20070134743A1 (en) * 2005-12-14 2007-06-14 Kimberly-Clark Worldwide, Inc. Detection of secreted aspartyl proteases from Candida species
US9820890B2 (en) 2006-06-12 2017-11-21 Edgewell Personal Care Brands, Llc. Tampon assembly providing proper bodily placement of pledget
US8323256B2 (en) 2006-08-29 2012-12-04 Playtex Products Inc. Tampon removal device
US20080058751A1 (en) * 2006-08-29 2008-03-06 Playtex Products, Inc. Tampon removal device
US8840598B2 (en) * 2007-09-12 2014-09-23 The Procter & Gamble Company Wrapper having a tab
US20090069769A1 (en) * 2007-09-12 2009-03-12 Ryo Minoguchi Wrapper having a tab
US9279140B2 (en) 2009-02-06 2016-03-08 Kimberly-Clark Worldwide, Inc. Personal care products with visual indicator of vaginitis

Similar Documents

Publication Publication Date Title
US3499447A (en) Tampon applicator
US3508558A (en) Cigarette filter
US3334636A (en) Filter for smokers' article
US3618605A (en) Catamenial tampon
US3177872A (en) Vaginal tampon and applicator
US3320956A (en) Catamenial tampon and method of making
US3068867A (en) Cellulosic product
US5087239A (en) Tampon applicator
US3559650A (en) Flushable moisture-retaining sanitary pad
US4318405A (en) Tampon and drug delivery device
US4798603A (en) Absorbent article having a hydrophobic transport layer
US6299573B1 (en) Domed compressed tampons
US3196873A (en) Tampon and applicator
US4263363A (en) Emulsion-containing absorbent article having improved water holding capacity
US5458592A (en) Thermoplastic fibrous nonwoven webs for use as core wraps in absorbent articles
US3585998A (en) Disposable diaper with rupturable capsules
US6433246B1 (en) Tampon having improved early expansion characteristics
US4326527A (en) Microwave heat setting of tampon
US6558362B1 (en) Disposable device for transferring an active liquid into a body cavity
US4027673A (en) Digitally insertable tampon
US4637819A (en) Macroscopically expanded three-dimensional polymeric web for transmitting both dynamically deposited and statically contacted fluids from one surface to the other
US3693622A (en) Waste fluid flow control element
US4392862A (en) Absorptive device
US6302861B2 (en) Spreading tampon applicator
US3420234A (en) Combined sanitary pad and catamenial tampon