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Publication numberUS3521639 A
Publication typeGrant
Publication dateJul 28, 1970
Filing dateDec 7, 1966
Priority dateDec 7, 1966
Publication numberUS 3521639 A, US 3521639A, US-A-3521639, US3521639 A, US3521639A
InventorsCurt G Joa
Original AssigneeCurt G Joa
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Sanitary napkin with completely wrapped filler pad
US 3521639 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

July 28, 1970 c. s. JOA 3,521,639

I SANITARY NAPKIN WITH COWLETELY WRAPPED FILLER PAD I u MAL-A,

I Airyan vs United States Patent O 3,521,639 SANITARY 'NAPKIN WITH COMPLETELY WRAPPED FILLER PAD Curt G. Joa, Ocean Ridge, Fla. (Box 1121, Boynton Beach, Fla. 33435) Filed Dec. 7, 1966, Ser. No. 599,858 Int. Cl. A611? 13/16 US. Cl. 128-290 3 Claims ABSTRACT OF THE DISCLOSURE A sanitary napkin comprising a filler pad made up of short fibers which tend to break away from the pad, a reticular overwrap ensleeving said pad and through the reticular spaces of which the fibers are siftable, and a non-reticular inner wrapper about said filler pad to con tain said fibers against sifting. The inner wrapper completely encloses the pad about its sides and ends. The narrow sides of the filler pad have tapered portions adjacent the ends. The inner wrapper is tucked into folds adjacent the tapered portions.

BACKGROUND OF THE INVENTION The material typically used in the art for forming absorbent pads consists of fluifed up cellulose or loose cotton fiber. When the overwrap or outer Wrap comprises a loosely knitted sheath of stockinette or similar reticular or knitted material commonly used in Europe, problems have been encountered in the sifting and loss of the loose fibrous material of the filler pad through the openings in the outer wrap.

SUMMARY OF THE INVENTION The present invention provides a soft non-woven wrapper preferably comprising a lamina of soft sift proof tissue which completely encloses the filler pads and prevents sifting and loss of filler pad material. The wrapper is supplied in a continuous web in the course of con tinuous movement of a series of spaced filler pads through the apparatus in which the sanitary napkins are manufactured. The web is folded into a sleeve surrounding the spaced pads with the marginal edges of the wrapper web turned in and overlapped along the length of the filler pads. The side edges of the wrapper adjacent the ends of the filler pad are tucked to conform to the characteristic shape of the tapered filler pads and the ends of the wrapper are crimped to provide an envelope completely enclosing the filler pad.

Further objects and advantages of the present invention will become apparent from the following disclosure in which:

FIG. 1 is an enlarged perspective showing a wrapped filler pad with the ends tucked and crirnped.

FIG. 2 is an enlarged broken open perspective view of the completed sanitary napkin made in accordance with the invention and having an outer wrap of stockinette.

FIG. 3 is an enlarged view of the stockinette outer cover.

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 exem- 3,521,639 Patented July 28, 1970 plifies the invention which may be embodied in other specific structure. The scope of the invention is defined in the claims appended hereto.

FIGS. 1 and 2 show a filler pad 12 totally enclosed in a wrapper 10. Pad 12 typically comprises wood pulp agglomerated into a fluffed up mass of moisture absorbent fibers. The fibers are short in length and tend to break away from the pad, together with such lint and dirt as is also present in the pad. Wrapper 10 is desirably formed from soft relatively fragile tissue, preferably two or four ply. It provides a sift proof cover for the pad, thus to prevent loss of fibers, etc., from the pad. Wrapper 10 is tucked at 14 along its sides adjacent its crimped ends 16.

FIG. 2 illustrates the pad 12 and wrapper 10 enclosed by an outer cover or overwrap 18 of loose non-Woven fabric such as knitted stockinette having projecting end tabs 20. The stockinette has relatively large pores or spaces 21 formed in the knit. These pores are large enough to allow the pad fibers to sift through the stockinette, in the absence of the wrapper 10.

The pad 12 desirably comprises two batts 42, 43, separated by a moisture barrier sheet 50.

The non-reticular inner wrapper 10 completely encloses the pad 12 about its broad sides, opposed narrow sides, and opposed ends. The wrapper 10 is desirably crimped at 16 at the ends of the pad. The wrapped pad is then ensleeved by the reticular overwrap 18 in a manner to leave the tabs 20 projecting longitudinally therefrom.

I claim:

1. A sanitary napkin comprising a filler pad made up of short fibers which tend to break away from the pad, a reticular overwrap ensleeving said pad and through the reticular spaces of which said fibers are siftable, and a non-reticular inner wrapper about said filler pad to contain said fibers against sifting, said inner wrapper completely enclosing the pad about its sides and ends, said filler pad having opposed broad sides, opposed narrow sides and opposed ends, the narrow sides of said filler pad having tapered portions adjacent said ends, said inner wrapper being tucked into folds adjacent said tapered portions.

2. A sanitary napkin in accordance with claim 1 wherein said non-reticular inner wrapper comprises a lamina of soft tissue, the ends of which are crimped about the ends of the pad.

3. A sanitary napkin in accordance with claim 1 wherein said filler pad comprises superimposed layers of cellulose pulp separated by a moisture barrier sheet.

References Cited UNITED STATES PATENTS 2,548,341 4/1951 Bricmont 128-290 3,060,936 10/1962 Burgeni 128-290 3,084,692 4/1963 Atkinson 128-290 3,183,909 5/1965 Roehr 128-290 3,230,955 1/1966 Joa et a1. 128290 3,343,543 9/1967 Glassman 128-290 FOREIGN PATENTS 618,787 4/1961 Canada. 938,373 10/ 1963 Great Britain.

CHARLES F. ROSENBAUM, Primary Examiner

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2548341 *Nov 9, 1948Apr 10, 1951Diapette IncAbsorbent pad
US3060936 *Oct 7, 1958Oct 30, 1962Personal Products CorpSanitary napkin
US3084692 *Sep 30, 1960Apr 9, 1963Johnson & JohnsonTapered sanitary napkin
US3183909 *Sep 24, 1962May 18, 1965Kimberly Clark CoConvertible sanitary napkin
US3230955 *Mar 28, 1963Jan 25, 1966Joa Curt G IncSanitary napkin
US3343543 *Jun 10, 1964Sep 26, 1967Jacob A GlassmanSanitary napkin
CA618787A *Apr 25, 1961Hilda S MakelaSanitary pad
GB938373A * Title not available
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3665923 *Feb 5, 1970May 30, 1972Kimberly Clark CoFlushable sanitary napkin
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
Classifications
U.S. Classification604/374, 604/378
International ClassificationA61F13/15
Cooperative ClassificationA61F2013/53445, A61F13/534, A61F13/511, A61F2013/530131
European ClassificationA61F13/511