Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.


  1. Advanced Patent Search
Publication numberUS3203419 A
Publication typeGrant
Publication dateAug 31, 1965
Filing dateJan 4, 1963
Priority dateJan 4, 1963
Publication numberUS 3203419 A, US 3203419A, US-A-3203419, US3203419 A, US3203419A
InventorsJoa Curt G
Original AssigneeJoa Curt G
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Sanitary napkin
US 3203419 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

Aug. 3l, 1965 c. G. JoA

SANITARY NAPKIN Filed Jan. 4, 1963 Nw wm ww INVENTOR.

cd1?? Jon m, hm

United Statesl Patent O 3,203,419 SANITARY NAPKIN Curt G. Joa, Ocean Ridge, Fla. (Box 1121, Boynton Beach, Fla.) Filed Jan. 4, 1963, Ser. No. 249,367 2 Claims. (Cl. 128-290) This invention relates to an improved sanitary napkin. An important feature of the sanitary napkin embodying the present invention is the combination of a non-woven relatively fragile and soft outermost wrapper for the absorbent ller pad, with relatively strong reinforcing strips, desirably one at each side of the filler pad and between the ller pad and the soft non-woven outer wrapper. Because of its softness, it has been found desirable to use a nonwoven fabric Wrapper, but this wrapper is insuiciently strong to resist stresses. The strips of reinforcing material desirably consist of commercially available gauze or non-woven fabric which is stronger than the non-woven fabric of the wrapper. These give ample strength to the sanitary napkin and the resultant product is of low-cost construction and retains the desirable soft non-woven outermost wrapper.

An optional, but desirable, feature of the invention is a plastic strip between the outermost Wrapper and the side of the ller which is away from the body when worn. The plastic strip functions as a moisture barrier and supplements the reinforcing strip in adding strength to the napkin. The plastic strip is desirably heat scalable. The reinforcing and plastic strips extend beyond the ends of the filler pad to comprise attaching tabs. The tabs are heat sealed adjacent the ends of the iiller pad to hold the fabric tucks snugly around the napkin pad and maintain the shape of the napkin.

Other objects, advantages and features of the invention will appear from the following disclosure in which:

FIG. 1 is a perspective view of a sanitary napkin ernbodying the invention, the several plies of one of the attaching tabs being separated to show the assembly of the strip components thereof.

FIG. 2 is a longitudinal cross section taken through a sanitary napkin embodying the invention.

FIG. 3 is a cross section taken along the line 3--3 of FIG. 2.

FIG. 4 is a diagrammatic view showing the method by which a napkin embodying the invention is fabricated.

Although the disclosure hereof is detailed and exact to enable those skilled in the art to practice the invention, the physical embodiments herein disclosed merely exemplify the invention which may be embodied in other specific structure. The scope of the invention is defined in the claims appended hereto.

The sanitary napkin comprises one or more layers of absorbent iller pad material surrounded by an outermost wrapper 11 of non-woven fabric which is soft, but which lacks substantial strength. The edges of the wrapper 11 are brought together along seam 12 along the medial center line of the side of the napkin worn away from the body, the seam being sealed by a bead or ribbon 13 of thermoplastic material. Sanitary napkins such as hereinbefore described are shown in my copending United States patent applications Serial No. 95,767, filed February 2, 1961, and Serial No. 184,105, led April 2, 1962.

In the preferred embodiment, the relatively fragile or weak non-woven fabric wrapper 11 is reinforced by two strips 14, 15 of relatively strong material. In the preferred embodiment, strips 14, 15 constitute commercially available gauze. These are centered upon the medial center line of the napkin and have a width equal to about one-half the width of the ller pads 10.

I also provide a strip 16 of thermoplastic material, sub- 3,203,419 Patented Aug. 31, 1965 stantially the same width as gauze strip 15. Only one strip 16 is provided and this is disposed within the napkin to lie between gauze strip 15 and filler pad 10. Strip 16 is thus disposed at the side of the napkin away from the body when worn. It functions as a moisture barrier and further reinforces the napkin at its exposed side.

The various plies of the Wrapper 11, gauze strips 14, 15 and plastic strip 16 extend beyond the ends of the filler pads 10 to constitute attaching tabs 17, 18 at both ends of the napkin. The several plies of gauze and plastic in the attaching tabs 17, 18 provide ample pinning strength. The excess material of the wrapper 11 is desirably tucked closely adjacent to the ends of the ller pad 10 and the tabs 17, 18 are heat sealed at 19, 20 adjacent the ends of the ller pad. If desired, the entire area of the end tabs may be heat sealed to bond the threads of the gauze strips 14, 15 to the intervening plastic strip 16 and to the wrapper material 11, thus to greatly increase the overall strength of the tabs.

The heat sealing aforesaid holds the ller pads 10 in position and also maintains the tucks of the fabric snugly around the pad in a neat appearing package.

Sanitary napkins embodying features of the invention can be readily fabricated on conventional machinery. FIG. 4 illustrates a continuous fabrication operation in which the ller pads 10 are entubed within the wrapper 11, the gauze strips 14, 15 and the plastic strip 16 being unwound from parent rolls concurrently with the advance of the filler pads 10 are propelled by traveling belts 23, 24.

While the preferred construction incorporates two reinforcing strips 14, 15, under some conditions I may omit the strip 14. This will leave gauze strip 15 and the plastic strip 16 to reinforce the napkin. Both of these strips will be disposed on the side of the napkin away from the body and proximate the seam 12.

Edge wrap strips, as shown in my United States Patent 2,721,554, may optionally be incorporated in napkins embodying the present invention.

The heat seals 19, 20 may be formed by conventional apparatus, for example the rollers 25, 26, which carry heat seal bars 27, 28.

The thermoplastic seal 13 is formed by the apparatus shown in my copending application Serial No. 95,767 aforesaid and is indicated by reference character 29 in FIGURE 4.

As aforestated, the reinforcing strips 14, 15 may be made of non-woven fabric of a heavier gauge than the soft fragile wrapper 11. Such a non-woven fabric is amply strong to reinforce the wrapper and in some instances is preferred over gauze.

I claim:

1. A sanitary napkin comprising:

(a) a filler having opposed broad sides and opposed narrow sides,

(b) a relatively weak non-woven fabric wrapper about the filler,

(c) two strips of reinforcing material, one at each of the broad sides of the filler and between the filler and said wrapper, said strips being narrower than the width of said broad sides,

(d) a strip of thermoplastic material substantially coextensive with and between one of said reinforcing strips and the side of the filler away from the body when worn,

(e) said strips extending beyond the ends of the filler to a comprise attaching tabs,

(f) and heat seals in said tabs adjacent the ends of the fil er.

2. The sanitary napkin of claim 1 in which said wrapper has its side edges seamed along the medial center line 3 4 of the napkin and a thermoplastic seal between said edges, 2,578,664 12/ 51 Beery et al. 128-290 said seam being at the side of the napkin away from the 2,773,503 12/56 Brownlee et al 128-290 body when worn. 2,896,627 7/59 Harwood 128-290 References Cited by the Examiner 5 1 FORIGNBIATENTS UNITED STATES PATENTS 648,141 2/50 reat ritaln. 1,980,958 11/34 Rohlng 12g 290 RICHARD A. GAUDET, Primary Exml'lle.

2,512,713 6/ 50 Cahill 12S-290 JORDAN FRANKLIN, Examiner.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US1980958 *Nov 24, 1933Nov 13, 1934Johnson & JohnsonSanitary napkin
US2512713 *Jun 14, 1947Jun 27, 1950Sidney J CahillRectal bandage
US2578664 *May 8, 1947Dec 18, 1951Johnson & JohnsonSanitary napkin
US2773503 *Sep 3, 1954Dec 11, 1956Personal Products CorpAbsorbent product
US2896627 *Jun 17, 1958Jul 28, 1959Kimberly Clark CoSanitary napkin
GB648141A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3291131 *Jul 19, 1963Dec 13, 1966Curt G JoaSanitary napkin, diaper, or hospital pad or the like
US3364931 *Oct 12, 1964Jan 23, 1968Walter F. HirschSanitary napkin
US3366115 *Jun 26, 1964Jan 30, 1968Kimberly Clark CoManufacture of sanitary product
US3407814 *Oct 18, 1966Oct 29, 1968Riegel Textile CorpFlushable sanitary napkin having a reinforcing and securing strip therein
US4713068 *Oct 31, 1986Dec 15, 1987Kimberly-Clark CorporationBreathable clothlike barrier having controlled structure defensive composite
US4713069 *Oct 31, 1986Dec 15, 1987Kimberly-Clark CorporationBaffle having zoned water vapor permeability
US4758239 *Oct 31, 1986Jul 19, 1988Kimberly-Clark CorporationBreathable barrier
US4818600 *Dec 9, 1987Apr 4, 1989Kimberly-Clark CorporationLatex coated breathable barrier
US7303708Apr 8, 2005Dec 4, 2007Curt G. Joa, Inc.Super absorbent distribution system design for homogeneous distribution throughout an absorbent core
US7374627Apr 7, 2005May 20, 2008Curt G. Joa, Inc.Method of producing an ultrasonically bonded lap seam
US7398870Oct 5, 2005Jul 15, 2008Curt G. Joa, IncArticle transfer and placement apparatus
US7452436Mar 9, 2006Nov 18, 2008Curt G. Joa, Inc.Transverse tape application method and apparatus
US7533709May 31, 2005May 19, 2009Curt G. Joa, Inc.High speed vacuum porting
US7537215Apr 22, 2005May 26, 2009Curt G. Joa, Inc.Method and apparatus for securing stretchable film using vacuum
US7618513May 31, 2005Nov 17, 2009Curt G. Joa, Inc.Web stabilization on a slip and cut applicator
US7638014Mar 18, 2005Dec 29, 2009Curt G. Joa, Inc.Method of producing a pants-type diaper
US7640962Apr 20, 2005Jan 5, 2010Curt G. Joa, Inc.Multiple tape application method and apparatus
US7703599Apr 12, 2005Apr 27, 2010Curt G. Joa, Inc.Method and apparatus for reversing direction of an article
US7708849Jan 4, 2006May 4, 2010Curt G. Joa, Inc.Apparatus and method for cutting elastic strands between layers of carrier webs
US7770712Feb 17, 2006Aug 10, 2010Curt G. Joa, Inc.Article transfer and placement apparatus with active puck
US7780052May 18, 2006Aug 24, 2010Curt G. Joa, Inc.Trim removal system
US7811403May 7, 2007Oct 12, 2010Curt G. Joa, Inc.Transverse tab application method and apparatus
US7861756May 8, 2007Jan 4, 2011Curt G. Joa, Inc.Staggered cutting knife
US7909956Aug 13, 2009Mar 22, 2011Curt G. Joa, Inc.Method of producing a pants-type diaper
US7975584Feb 21, 2008Jul 12, 2011Curt G. Joa, Inc.Single transfer insert placement method and apparatus
US8007484Apr 1, 2005Aug 30, 2011Curt G. Joa, Inc.Pants type product and method of making the same
US8016972May 8, 2008Sep 13, 2011Curt G. Joa, Inc.Methods and apparatus for application of nested zero waste ear to traveling web
US8172977Apr 5, 2010May 8, 2012Curt G. Joa, Inc.Methods and apparatus for application of nested zero waste ear to traveling web
US8182624Mar 11, 2009May 22, 2012Curt G. Joa, Inc.Registered stretch laminate and methods for forming a registered stretch laminate
US8293056Aug 24, 2010Oct 23, 2012Curt G. Joa, Inc.Trim removal system
US8398793Jul 20, 2007Mar 19, 2013Curt G. Joa, Inc.Apparatus and method for minimizing waste and improving quality and production in web processing operations
US8417374Apr 26, 2010Apr 9, 2013Curt G. Joa, Inc.Method and apparatus for changing speed or direction of an article
US8460495Dec 27, 2010Jun 11, 2013Curt G. Joa, Inc.Method for producing absorbent article with stretch film side panel and application of intermittent discrete components of an absorbent article
US8557077Mar 21, 2011Oct 15, 2013Curt G. Joa, Inc.Method of producing a pants-type diaper
US8656817Mar 7, 2012Feb 25, 2014Curt G. JoaMulti-profile die cutting assembly
US8663411Jun 6, 2011Mar 4, 2014Curt G. Joa, Inc.Apparatus and method for forming a pant-type diaper with refastenable side seams
US8673098Oct 25, 2010Mar 18, 2014Curt G. Joa, Inc.Method and apparatus for stretching segmented stretchable film and application of the segmented film to a moving web
US8794115Jul 7, 2011Aug 5, 2014Curt G. Joa, Inc.Single transfer insert placement method and apparatus
US8820380Mar 29, 2012Sep 2, 2014Curt G. Joa, Inc.Differential speed shafted machines and uses therefor, including discontinuous and continuous side by side bonding
U.S. Classification604/366, 604/370, 604/379
International ClassificationA61F13/15
Cooperative ClassificationA61F13/15682
European ClassificationA61F13/15M4C