US2825497A - Sealable sanitary bags - Google Patents

Description

March 4, 1958 D. A. HITT 2,825,497

' SEALABLE SANITARY BAGS Filed March 29, I956 2 Sheets-Sheet 1 I a \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\2&\\\\\ IN V EN TOR.

March 4, 1958 D. A.- HIT'T 2,825,497.

) SEALABVLE SANITARY BAGS Filed March 29, 1956 v '2 Sheets-Shet 2 INVENTOR.

Dwight B. Hm

\ United States Patent SEALABLE SANITARY BAGS 'Dwight AQHitt, Oklahoma City, Skis.

Applieatin March29,19 56,' Serial N0. 574,821

3 Claims. .(Clr229 62) This invention is dire'cte'd' to a 3 noveldisposable saniand'sealable bag or envelope which is adapted to be "fisdforsealingand disposing of disposable i articles such 'ias sanitary napkins or other articles. It is especiallydilected" to the type of -economicallymanufacturable completely scalable bags or--envelopes which have quickly and easily sealable means, 'preferably including bands or -"strips of -pressure -s'ensitivecement or adhesive adjacent -the' normally open ends 1 thereof.

lt is an important object of'm'y invention-to provide a qu'ickly sealable, inexpensive and disposable bag or envelope 'of com act size and light weight and. formed snbstantiall'y from a single sheet of paper or equivalent 'sheef material,- and which have normally projecting inte'gral flap means adapted to "be normally removably positioned in the open end of the bag and adapted to be -feinove'd topermit quick and easy sealing of the opening hy manual pressure.

A further object and accomplishment of my inven- 'tiOn' is-the provision ofthe'novelbag or'envelope formed "fromthe'sin'gle sheet of -material which. is normally open at one end thereof and which is provided with -an integral projecting flap extending substantially the full width of thebag orienvelope,'and with 'a continuous band or strip of pressure-sensitive adhesive on the inside face of the bag or envelope adjacent the opening thereof, said adhesive -a'rea beingadapted to' permit complete sealing 'by manual pressure-of the .openingafter removal of the flap from -saidopening.

further object of my invention is the provision of a novel method of manufacturing bags or envelopes having the aforesaid features including areas of pressuresensitive adhesive, -and -in whichthe' open ends thereof 7 may be effectively sealed. by the application of. pressure upon the adhesive-carrying end portions of such bag or envelope.

Other and further important objects of my invention will be apparent from the following description and appended claims.

On the drawings:

Fig. 1 is an elevational view of my sealable bag or envelope illustrating certain parts broken away.

Fig. 2 is a cross-sectional view on line 22 on Fig. 1.

Fig. 3 is a perspective view looking at the open end of the bag or envelope, and with the bottom portion thereof broken away.

Fig. 4 is a cross-sectional view of the bag when sealed and taken on a longitudinal plane substantially on the line 44 of Fig. 1.

Fig. 5 is an elevation of the single blank or sheet from which said bag or envelope is formable and illustrating the adhesive areas.

Fig. 6 is a cross-sectional view taken substantially along a longitudinal plane through one of said sealable bags or envelopes and showing the same in sealed position and containing an article therein.

Fig. 7 is a cross-sectional view of an outer relatively rigid cylinder or tube and showing one of my paper bags 2,825,497 Patented 'Mar. 4, 1:958

mounted therein and illustrating one method 'of holding the bags When=applying a strip or band of pressuresensitive material to the marginal edgeportion of them- "side face thereof.

Numeral 10 designates a relativelythin sheet'or blank which is preferably of paper of asubstantially mosture and air impervious type, and which is preferably'opaque.

Such paper blank may optionally be scented whereithe 10 bags are adapted for articles having undesirable odor.

Said blank 10 is-shown in eleva'tionin Fig. -5' preliminary to its formation into a :bag or envelope.

Said blank 10 is preferably of substantiallyrectangu- A transverse crease .19 :is "preferably; formed :alshort distance from 'and parallekto thenorrnally lower margin or edge lla of 'said b'lank. Said: crease facilitates foldingover andsealing of the-bottom end portion 'ofithe --bag, 'hereinafter referred toasfflap 11.

Said'blank 10 .has -.a .normally'upper integral tab or flap 13 of a width to extend from one lateraledge to 'the other lateral :edgeof the bag :or envelope to be i formed. .SaidLfiap 13 has bothof itsfaces substantially smooth. 'Alineof perforations:23 is preferably formed between said flap-1'3 and the-body of'theblank.

Numeral 14 is a layer oristrip of suitable :adhesive or cement which is applied along one ofthe lateral edge portions of integral -Wingl8 of-said blank, asshown-at the right of Fig. 5. 'A continuousstrip, layer or band 15 of apressurmsensitive adhesiveis applied to and carried by the normally upper-edge portion of said blank 10, as shown in Fig. :5. :Said band 15 extends from one lateral edge :to the otherand'said pressure-sensitive adhesive is of a typernormally-havinga tacky exposed face which is not sensitiverto materials-other;-than:sim-

ilar adhesive.

Numerals 16 and 17 indicate optional "spacedapart longitudinal creases which: extend; from the upper to the lower' edge of the blank,-as illustrated in Fig. 5. Said creasesfacilitatefolding of theblank in the formation of the bag.

The two wing portionstoftheblank 10 are bentand folded backupon and over the central-arearof the blank 10, and with the adhesive strip 14 overlyingand in sealing contact-withthe oppositeandoutside face of'the other wing portion, saidadhesive 'beingvpreferably .applied while sticky and tacky, to thereby form a tunnel or tube with its opposite ends open. The strip or band of glue 12 is preferably applied in a sticky state.

After the wing portions are adhesively secured in the described manner to form a substantially flat or oval shaped structure, a transverse band or strip of suitable adhesive 20 is applied to the normally outer face of the lower edge portion of the bag side (or flap 11), whereupon the double thickness of the bottom portion is folded and doubled back to form folds 21 and 22, and pressed into adhesive securance with said adhesive strip 26 to thereby seal the bottom portion of the bag so that it is air-tight, (see Figs. 4 and 6).

The resulting structure is a single walled envelope or bag with an end opening defined by the continuous band 15 of pressure-sensitive adhesive orcement, as illustrated in Figs. 1, 3 and 8.

The upper flap 13 is bent along a transverse line coinciding with the edge of the open end of the bag and loosely and removably inserted and positioned between the opposed areas of pressure-sensitive adhesive 15 to keep the latter from contacting each other, until the bag is to be used and sealed in the described manner.

Said open ended bag or envelope is available for use,

7 formed by perforations23.

suchIas theinsertionfof articles having odor "and which it is desirable to completely seal. After insertion of the article, such as a sanitary napkin or the like, the projecting flap 13 is removed or folded out of the opening. Thereupon the user will'press together theiopposed faces of thetacky pressure-sensitive adhesive band ;15 which are positioned on opposite sides of said opening. This'will effectively and completely seal the open end" of; theentionallytear ofi tlie flap '13 along the weakened line opening thereofysaid? upper flap ab ly inserted in said opening to keep'the opposed aream a of said pressure-sensitive adhesive apart; said upper flap" being removable to permit selective'manually actuated adhesion of the adhesive bearing positions of said' en-V velope orybag without leaving anyair or moisturevents' .along .theniouth edge of the, bag. The user ;may opvelope.

2. In a sealable envelope for 'odoriferous' articlesganfl elongated body formed. from1.;a' single blank or sheet-m material, and having the opposite lateral edges of said blank overlapped and cemjented'togetheg a bottom flap j integral with one, side portion, of said, envelopet andt .In Fig. 3, I have illustrated'theiopen endportion-of the bags with the. flap 13 extending outwardly; In Figs.

' 4 and 6 the completely sealed envelope is shown in longitudinal cross s'ection,

In' Fig. 7, llhave illustrated incrossisection a rigid cylinder 24 which may optionally be used to'ternporarily mount thewp'aper'blank afterjthe 'bands *of' adhesive '14 and 15 have been. applied thereto, to facilitate "easyand correct application ofmanual'or roller applied pressure .tothe overlapped lateral marginal edges of. theblank,

one of which edges carries thecsoft andstickyrstrip of adhesive 14. In thi's' manner, uniformitylof the degree of overlapping of'the lateral edgesf' is assured and con- ;sequent'uniform circumference and size of the vbag is assured. a

V bearing areas; said fiap havinga line ojperforations be- While I havereferr'ed to use of manual pressure to i V efiect adhesion of'parts carrying an iadh'esivetl desire itrto be understood thatlthe pressure'as'well as heat may be applied by mechanical means to eifect so called heat 'seals or heat-assisted bonding of the 'partsto be'con-r nected, and thatrsuch heat-sealing and such bags sealed thereby are within the scope of my invention and' equiv- ;alent t'o therstructure and steps described, i

As many changes could be made in the above construction, and as many apparently widely dilierent em-V -bodiments of'my invention within the scope of the claims Q could beconstructed without departing from the spirit a'nrliscope thereof it is intended that all matter con- '-tained in the accompanying specification shall be interpreted as illustrative and not in a limiting sense. i

' What'is claimed is: 1 V r 1. In a sealable envelope formed of'a single-blank of paper'having the opposite lateral 'edges of said blank overlapped and Cementedtogether; an integral bottom flap doubled back and secured to the body portion of said envelope to provide an f airtight seal; a closable upper flap'integralwith the normally open end of said envelope and extendingts ubstantially from one lateral edge to the other thereof; and a continuous band of pressure-sensitive adhesive onthe inside face of the envelope adjacent the 2,185,401 Dahlhaus FOREIGN PATENTS; 7 451,755 'Great Britain doubled back andsealed upon the opposite=side thereof and forming anair-tight sealga continuousiareajof pressure-sensitive cement on the inside surface of'said envelope adjacent'the opening ofsaid envelope; and a flexible flap integralwith one side wall of said envelope and, extending substantially the full width. thereofr and normally removably positioned between said 1 eemenb tween hand the adjacent wall of said envelope; being selectively removable andtearable along said perfor tions; and' said areas bearing said; pressure-sensitiveiceremoval;

ment being pressable against each other aft'e' of said flexible flap to form an air-tightseaL;

3;, A flat paper .blank for making an'jenveloper. eoriiprising a sheetof substantially rectangular formia band of pressure-sensitive cementsecured along the-normally the opposed cementedlareas said openablerflapl being removable to permit selective adhesion or said 'cernent-., 7

bearing areas. f it:

References-Cited m1 thefileof:

UNITEDTSTATES PATENrs V V being heady-isms

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