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Publication numberUS3477433 A
Publication typeGrant
Publication dateNov 11, 1969
Filing dateDec 23, 1966
Priority dateDec 23, 1966
Publication numberUS 3477433 A, US 3477433A, US-A-3477433, US3477433 A, US3477433A
InventorsRosemary A Dillon
Original AssigneeRosemary A Dillon
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Sanitary napkin
US 3477433 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

- Nov. 11, 1969' R- A. DILLON 3,477,433

SANITARY NAPKIN Filed Dec. 25, 1966 INVENTOR. ROSEMARY A. D/LAON any/Z0 ATTORNEYS United States Patent 3,477,433 SANITARY NAPKIN Rosemary A. Dillon, 9622 Mohawk Drive, Shawnee Mission, Kans. 66206 Filed Dec. 23, 1966, Ser. No. 604,311 Int. Cl. A61f 13/20; A61m 15/00 US. Cl. 128--290 4 Claims ABSTRACT OF THE DISCLOSURE A very thin sanitary napkin particularly designed for very light flow periods is formed of a plurality of absorbent tissue paper sheets with a liquid impervious sheet therebeneath. A bottom sheet of tissue paper lies beneath the impervious sheet, presenting substantial surface friction, and thereby avoids unwanted relative movement of the napkin with respect to the underclothes of the wearer.

background of the invention Summary of the invention This invention contemplates the formation of a very thin sanitary napkin which may be worn without belts due to friction produced between an undergarment and the napkin when the napkin is pressed against the body of the wearer. It is the principal objects of the present invention to provide such a thin napkin which may be comfortably worn without the use of belts; to provide such a napkin which offers protection against fluids traveling therethrough onto the undergarments of the wearer; to provide such a device which exhibits a friction layer on the underside thereof to reduce the tendency to move with respect to the undergarment of the wearer; and to provide such a napkin which presents little bulk and is thus easily carried in purse or pocket.

Other objects and advantages of this invention will become apparent from the following description taken in connection with the accompanying drawings wherein are set forth by way of illustration and example certain embodiments of this invention.

Brief description of the drawings FIG. 1 is a perspective view of a napkin embodying this invention, shown greatly exaggerated in thickness and with a portion broken away to better illustrate internal construction.

FIG. 2 is a cross-sectional end view of a modified form of napkin wherein tissue paper layers are doubled around one edge, the vertical dimension also being greatly exaggerated.

FIG. 3 is a fragmentary plan view of the embodiment of FIG. 2, with a portion 'broken away showing an adhesive strip used to maintain the layers together.

FIG. 4 is a perspective view of a further modified form of this invention which includes a soft mesh bag containing the pad.

Description of the preferred embodiments Referring to the drawings in more detail, the reference numeral 1 generally indicates a sanitary napkin for absorbing body fluids during light flow periods. The napkin comprises a plurality of adjacent overlaping elon- 3,477,433 Patented Nov. 11, 1969 gated absorbent tissue paper sheets 2 forming an elongated pad 3 with an upper surface 4 and a lower surface 5. A fluid impervious, thin, flexible film or sheet 6 of a suitable synthetic material such as polyethylene is coextensive with the tissue paper sheets 2 and positioned in contact with the lower surface 5.

A layer or sheet 7 of tissue paper similar to the sheets 2 is positioned beneath the impervious sheet 6 and is coextensive therewith. The sheets 2, 6 and 7 forming the napkin in the embodiment of FIG. 1, are maintained together in overlapping relation by suitable edge crimping 8 around the adjacent peripheries of the various sheets.

The sanitary napkin shown in FIG. 1 and described above is quite thin and may be comfortably worn between the body and a tight undergarment during periods of light flow. Since the bottom layer or sheet 7 is of tissue paper, it presents a relatively high friction surface which engages the undergarment, thus resisting relative movement therebetween and normally eliminating the need for the belt commonly worn with a conventional sanitary napkin. The impervious sheet 6 prevents liquid flow from passing entirely through the napkin and onto the clothes of the wearer.

A second embodiment of this invention is shown in FIGS. 2 and 3, wherein the tissue paper sheets 9 corresponding to the sheets 2 in FIG. 1 are substantially twice the width of the finished pad 10 and are doubled or folded along a common edge 11 eliminating the need for fastening the sheets together along the edge 11. An impervious sheet 12, corresponding to the sheet 6, is placed between a selected pair of adjacent sheets 9 near the underside 13 of the pad 10. Thus, the bottom sheet 14 is formed of tissue paper so as to provide the downwardly directed frictional surface described above. The remaining edge-s 15 of the sheets 9 and impervious sheets 12 are joined together, by way of example, with adhesive strips 16.

A further modified form of this invention is illustrated in FIG. 4, wherein a soft mesh bag 17 of fibrous material, such as paper, encases a pad 18 similar to those described in connection with FIGS. 1 or 2. However, the various sheets forming the pad 18 need not be joined, since the bag 17 may function to physically hold all the sheets in overlapping aligned relation.

In the embodiment of FIG. 4, the underside 19 of the mesh bag 17 presents a downwardly directed surface having the desired high frictional characteristics and thus the impervious sheet 20 of the pad 18 may be on the bottom of the pad (within the bag) rather than between the various layers thereof.

In some instances it may be desirable to extend portions of the bag 17 forming forwardly and rearwardly directed tabs 21 and 22-which can 'be pinned or otherwise seured tc the undergarment, for example, in cases of high physical activity of the wearer.

It is to be understood that, although certain forms of this invention have been illustrated and described, it is not to be limited thereto except insofar as such limitations are included in the following claims.

What I claim and desired to secure by Letters Patent is:

1. A sanitary napkin for absorbing body fluids during light flow periods comprising:

(a) a plurality of adjacent overlapping and engaging elongated absorbent tissue paper sheets forming an elongated pad with an upper surface and a lower surface;

(b) a fluid impervious sheet engaging and coextensive with said tissue paper sheets and positioned in contact with said lower surface;

(c) at least one tissue paper bottom sheet beneath and engaging said impervious sheet and coextensive therewith;

(d) maintaining means associated with each of said tissue paper sheets and said impervious sheet and said bottom sheet for holding same in parallel overlapping engagement;

(e) said tissue paper sheets and said bottom sheet each having at least twice the width of said pad;

(f) said tissue paper sheets and said bottom sheets each being folded to form upper and lower parallel portion; and

(g) said impervious sheet being substantially a single width sheet positioned between the lower portions adjacent tissue paper sheets.

2. The sanitary napkin as set forth in claim 1 where- (a) said maintaining means comprises crimping together the peripheral edges of each of said tissue paper sheets and said impervious sheet and said bottom sheet.

3. The "sanitary napkin as :set forth in claim 1 wherein:

(a) said maintaining means is a continuous adhesive strip adjacent the peripheral edges of each of said tissue paper sheets and said impervious sheet and said bottom sheet.

References Cited UNITED STATES PATENTS Makela 128290 Harwood 128290 Campall 128-290 Wolterding et al. 128296 Testa 128290 FOREIGN PATENTS Great Britain. Great Britain.

CHARLES F. ROSENBAUM, Primary Examiner

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2815027 *Dec 12, 1955Dec 3, 1957Hilda S MakelaSanitary pad
US2896627 *Jun 17, 1958Jul 28, 1959Kimberly Clark CoSanitary napkin
US3044467 *Feb 29, 1960Jul 17, 1962Loyola E CampauPanty pad
US3067747 *Sep 4, 1959Dec 11, 1962Kimberly Clark CoCellulosic product
US3367334 *Mar 31, 1965Feb 6, 1968Samuel R. TestaSanitary napkin
GB819941A * Title not available
GB906489A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3570491 *Feb 16, 1970Mar 16, 1971Vincent R SneiderDisposable sanitary pad
US3693622 *Aug 14, 1970Sep 26, 1972Jones Sr John LWaste fluid flow control element
US3765418 *Apr 17, 1972Oct 16, 1973J JonesOptimum profile absorbent diaper pad
US3878283 *Aug 30, 1972Apr 15, 1975Jones Sr John LMethod of making menstrual napkins
US4576596 *Mar 3, 1983Mar 18, 1986Kimberly-Clark CorporationResilient shape-retaining sanitary napkin
US4752349 *Feb 28, 1986Jun 21, 1988The Procter & Gamble CompanyDisposable absorbent product having resilient scalloped edge, and method of making the product
US4882213 *Apr 29, 1988Nov 21, 1989Weyerhaeuser CompanyAbsorbent article with tear line guide
US4883701 *Apr 29, 1988Nov 28, 1989Weyerhaeuser CompanyInfant car seat liner
US4885200 *Apr 29, 1988Dec 5, 1989Weyerhaeuser CompanyInfant car seat liner
US4886697 *Apr 29, 1988Dec 12, 1989Weyerhaeuser CompanyThermoplastic material containing absorbent pad or other article
US4891454 *Apr 29, 1988Jan 2, 1990Weyerhaeuser CompanyInfant car seat liner
US4892769 *Apr 29, 1988Jan 9, 1990Weyerhaeuser CompanyFire resistant thermoplastic material containing absorbent article
US4961930 *Apr 29, 1988Oct 9, 1990Weyerhaeuser CompanyPet pad of thermoplastic containing materials with insecticide
US5059277 *Feb 28, 1986Oct 22, 1991The Procter & Gamble CompanyAdhesive-free bonding of continuously moving webs to form laminate web
US5675079 *Jun 7, 1995Oct 7, 1997Kimberly-Clark Worldwide, Inc.Apparatus for measuring the crush recovery of an absorbent article
US5803920 *Sep 4, 1996Sep 8, 1998Kimberly-Clark Worldwide, Inc.Thin absorbent article
US5810798 *Jan 15, 1997Sep 22, 1998Kimberly-Clark Worldwide, Inc.Absorbent article having a thin, efficient absorbent core
US5981824 *Jan 29, 1998Nov 9, 1999Mcneil-Ppc, Inc.Garment shield
US6206865Oct 1, 1996Mar 27, 2001Kimberly-Clark Worldwide, Inc.Absorbent article having a cellulosic transfer layer
US6888044Dec 23, 2002May 3, 2005Kimberly-Clark Worldwide, Inc.High capacity absorbent structure and method for producing same
USD736912 *Feb 5, 2014Aug 18, 2015Torunskie Zaklady Materialow OpatrunkowychIncontinence pad
EP0067377A2 *Jun 3, 1982Dec 22, 1982Kimberly-Clark CorporationSanitary napkin prestressed in lateral direction
EP0067377A3 *Jun 3, 1982Jul 13, 1983Kimberly-Clark CorporationSanitary napkin prestressed in lateral direction
EP0235854A1 *Feb 20, 1987Sep 9, 1987THE PROCTER & GAMBLE COMPANYDisposable absorbent product having resilient scalloped edge, and method of making the product
WO1989010109A1 *Apr 12, 1989Nov 2, 1989Weyerhaeuser CompanyMethod of making a pad or other article
U.S. Classification604/375, 604/370
International ClassificationA61F13/15, A61F13/56
Cooperative ClassificationA61F2013/51409, A61F2013/51097, A61F13/53418, A61F2013/53908, A61F2013/5694, A61F2013/4708, A61F2013/53445, A61F13/539
European ClassificationA61F13/534B2, A61F13/539