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Publication numberUS3390671 A
Publication typeGrant
Publication dateJul 2, 1968
Filing dateDec 30, 1965
Priority dateDec 30, 1965
Publication numberUS 3390671 A, US 3390671A, US-A-3390671, US3390671 A, US3390671A
InventorsHildebrand Gordon F
Original AssigneePurex Corp Ltd
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Tampon applicator
US 3390671 A
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Description  (OCR text may contain errors)

July 2, 1968 G. F. HILDEBRAND TAMPON APPLICATOR Filed Dec. 30, 1965 [NMEA/rc2.

United States Patent O "ice 3,390,671 TAMPON APPLICATOR Gordon F. Hildebrand, St. Charles, Ill., assignor to Purex Corporation, Ltd., Lakewood, Calif., a corporation of California Filed Dec. 30, 1965, Ser. No. 517,662 8 Claims. (Cl. 12S-263) ABSTRACT OF THE DISCLOSURE A tampon applicator providing a self-lubricating surface utilizing a thin coating of a normally essentially dry but water soluble material on the exterior surfaces of the applicator.

This invention has to do generally with improvements in catamenial tampon applicators adapted for vaginal insertion and Ito contain ejectab'le tampons. More particularly the invention relates to lubrication of such applicators to facilitate insertion into body orifices.

Preliminarily it may :be observed that the desirability for providing lubricated applicators arises from the normally relatively dry nature of the vaginal tract which, therefore offers resistance to insertion of the applicato-r.

Heret-ofore it has been proposed to lessen such resistance as by providing applicators with very smooth surfaces, using e.g., smooth plastic materials to form the exposed applicator surface. Also it has been proposed to lend lubricity to the applicator as by waxy (oil soluble) coatings.

Such expendients however do not afford the lubrication desired because they are predicated upon presenting water insoluble surfaces which, however smooth, cannot possess or permit slippage to the degree required for ease and comfort in the use environment.

The present invention departs from such prior proposals in its contemplation lof thinly coating an applicator with a normally essentially dry material which itself has water solubility and therefore, upon becoming moistened, acquires a high degree of slipperiness in and by virtue of at least partial dissolution of dispersion of the coating substance itself, as distinguished from mere surface condition.

The invention has for its general object to provide a tubular tampon applicator with a coating, preferably having continuous uniform thickness, of a material having that degree of water solubility as dispersability in the presence of body cavity moisture, or by virtue of premoistening, that the material becomes inherently slippery and thereby eases the tampon insertion.

While the invention does not contemplate limitation to any particular coating material, useful substances may be selected from the class of organic polymeric materials including the polyvinyl alcohols, polyvinylpyrrolidone, polyethylene oxide, polyglycols, polyether film, alkali metal salts of polyacrylic acid, alkali metal salts of alginic acid, polysaccharides such as modified starch, sodium carboxymethyl celluloses and hydroxyethyl celluloses. Of these polymers, polyvinyl yalcohol may be regarded as typical.

Generally the degree of water solubility of such materials may be deepndent upon their degrees of polymerization, solubility decreasing with increasing polymerization. For purposes of the present invention, intermediate polymerization is desirable so that the coating will not tend to have undue moisture acceptiveness as by exposure to normal humid atmosphere, but will at least partially dissolve or disperse upon aqueous liquid contact. Whether in a strict technical sense these polymers undergo apparent dissolution by formation of true aqueous 3,390,671 Patented July 2, 1968 solution, or aqueous dispersion, the change in state herein will be referred to as one of solution.

The various features and objects of the invention will be more fully understood from the following detailed description of illustrative embodiments shown lby the accompanying drawing, in which:

FIG. 1 is a view partly in section showing an illustrative tampon and its applicator assembly;

FIG. 2 is an enlarged elevation yalso partly in section, showing the coated section `of the applicator tube;

FIG. 3 is an enlarged cross section on line 3--3` of FIG. 2; and

FIG. 4 is a view illustrating a variational embodiment of the invention.

Referring rst to FIG. l, the assembly in its generalities is shown to comprise a usual combination of a tampon 10 which may be of any suitable specific form and composition, contained within an applicator tube 11 which receives within its open end opposite the tampon a slideable ejector 12. The usual string 13 connected to the tampon, extends through the ejector 12 so as to fbe retained by the tampon after its projection from the applicator.

In more particular reference to FIG. 2, the applicator 11 is shown to comprise an open end coated tube, the inside or base 14 of which maybe formed of any suitable or usual material, such as single or multiple layer paper. The invention is more particularly concerned with the provision on the exposed applicator surface of a coating or layer 15 of the previously described moisture soluble lubricant. Preferably, in the interests of assuring uniformity of the coating thickness and continuity, and for efiicient manufacture, the tube 1-4 is wrapped spirally or otherwise, with relatively thin paper 16, the surface of which is coated by known paper finishing methods with the polymer 15 at a thickness of between about 1/2 to 11/2 mils.

While use of a polymer coated paper wrap about the tube is preferred for the reasons stated, it is also possible to coat the tube 14 directly at some sacrifice of thickness uniformity, as by spraying or otherwise depositing the polymer onto the tube surface. Thus in FIG. 4, a solution of the polymer is shown to be deposited from a spray 17, the deposited film being dried in any suitable manner.

Upon being contacted by moisture, the polymer coating 14 undergoes at least partial solution or dispersion so that within itself, as distinguished from mere surface effect, the coating acquires a flowability or shearability which results in inherent lslipperiness affording the ideal qualities for non-irritating lubrication.

I claim:

1. A catamenial tampon and applicator therefor adapted for vaginal insertion comprising an ejectable tampon and an applicator comprising a tube having an outer surface coating of a thin Water soluble polymer which becomes slippery upon and by virtue of vaginal moistening.

2. Applicator according to claim 1, in which the thickness of said coating is between about 1/2 and 11/2 mils.

3. Applicator according to claim 1, in which said coating .is a preformed film of uniform thickness.

4. Applicator according to claim 1, in which said tube includes a tubular body having a wrapper whose outer surface is filmed with said coating.

5. Applicator according to claim 1, in which said body is a paper tube and said wrapper is carrying said paper coating.

6. Applicator according to claim 1, in which said tube comprises a tubular body covered by a wrapper having a water soluble organic polymer outer surface coating of thickness between about 1/2 and l mil.

3 4 7. Applicator according to claim 6, in which said References Cited coating is carried on paper wrapped yaround said tube. UNITED STATES PATENTS 8. Applicator according to claim 1 in which said coatalkali metal salts yof polyacrylic acids, alkali metal salts -of alginic acid, and polysaccharides selected from starch, carboxymethyl celluloses and hydroxyethyl celluloses. ADELE M' EAGER Pnmary Exammer

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2808832 *Jul 19, 1954Oct 8, 1957Sanitary Products CorpFilm-tipped catamenial tampons
US2832342 *Mar 26, 1956Apr 29, 1958Leonora WingenrothCleansing device
US2854978 *Jul 24, 1956Oct 7, 1958Ortho Pharma CorpApplicator
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3581744 *May 3, 1968Jun 1, 1971Voss Joseph ALaminated tube structure
US4317447 *Jul 19, 1979Mar 2, 1982Ortho Pharmaceutical CorporationDrug delivery system
US4622030 *Apr 23, 1984Nov 11, 1986Kimberly-Clark CorporationReverse folded convolutely wound tampon tube
US5330421 *Dec 4, 1992Jul 19, 1994Tambrands Inc.Tampon applicator
US5547701 *Jun 7, 1995Aug 20, 1996Kimberly-Clark CorporationMethod of forming a paper applicator containing a water insoluble coating
US5601530 *Jun 7, 1995Feb 11, 1997Kimberly-Clark CorporationHaving low coefficient of friction
US5611859 *Jun 7, 1995Mar 18, 1997Kimberly-Clark CorporationApparatus for coating a strip of paper
US5643196 *Mar 3, 1995Jul 1, 1997Tambrands Inc.Tampon applicator
US5795320 *Aug 12, 1996Aug 18, 1998Kimberly-Clark Worldwide, Inc.Tampons
US5843060 *Jan 2, 1997Dec 1, 1998Xomed Surgical Products, Inc.Non-adherent nasal, sinus and otic packing and method for processing sponge materials in fabrication of packings
US5931803 *Mar 12, 1998Aug 3, 1999Playtex Products, Inc.Epoxy coated tampon applicator having a pierce-through fingergrip
US5984888 *Aug 14, 1998Nov 16, 1999Kimberly-Clark Worldwide, Inc.Applicator and coating
US6169123Jul 23, 1998Jan 2, 2001Xomed Surgical Products, Inc.Polyvinyl acetal foamed packing material has surface modification imparting a non-adherent hydrogel coated surface. polyvinyl acetal sponge containing a uniformly dispersed interstitial gel of polyvinylpyrrolidone,
US6214895Sep 14, 2000Apr 10, 2001Xomed Surgical Products, Inc.Method for making a polyvinyl acetal sponge packing for use in the nasal, sinus and otic cavities
US6416488Aug 12, 1998Jul 9, 2002Playtex Products, Inc.Tampon applicator with taped finger grip
US6524269May 4, 2001Feb 25, 2003Mcnamara Sean P.Lubricated tampon
US6746418Nov 17, 2000Jun 8, 2004Playtex Products, Inc.Methods of lubricating a tampon and a tampon lubricated thereby
US6830554Apr 29, 2002Dec 14, 2004Playtex Products, Inc.Tampon applicator with taped finger grip
US7226436Mar 8, 2005Jun 5, 2007Playtex Products, Inc.Cardboard tampon applicator with optical enhancing material coated on inner layers
US7887525Jun 25, 2004Feb 15, 2011Playtex Products, Inc.Coating composition with color and/or optical components and a tampon applicator coated therewith
US7982089Jan 9, 2004Jul 19, 2011Playtex Products, Inc.Methods of lubricating a tampon and a tampon lubricated thereby
EP0813402A1 *Mar 4, 1996Dec 29, 1997Tambrands, Inc.Tampon applicator
WO1984000495A1 *Jul 23, 1982Feb 16, 1984Kline Larry HaroldLubricating object applicator
WO2003059231A1 *Jan 10, 2003Jul 24, 2003Mcneil Ppc IncAbsorbent device with a lubricious cover
Classifications
U.S. Classification604/12, D24/141
International ClassificationA61F13/26, A61F13/20
Cooperative ClassificationA61F13/26
European ClassificationA61F13/26