US2581826A - Bag - Google Patents

Description

S. G. YOUNT Jan. 8, 1952 BAG 5 Sheets-Sheet 1 Original Filed Aug. 9, 1946 )7?- TORNEYS Jan. 8, 1952 s. G. YOUNT 2,581,826

BAG

Original Filed Aug. 9, 1946 3 Sheets-Sheet 2 Jan. 8, 1952 s. c. YOUNT 2,581,326

BAG

Original Filed Aug. 9, 1946 3 Sheets-Sheet 5 STANLEY G. You/v1;

Patented Jan. 8, 1952 p BAG 1 1 Stanley G. Yount, Los Angeles, Calif.

Original application August 9, 1946', Serial Nb;

689,565; Divided and this'a'pplieatio ber 29,1947, Serial No. 776,749 Y i .3 claims; (01. 229- 3) This invention relates to the manufacture'of paper bags and-is particularly adaptable to the production of large circumference, heavy bags suitable for covering items such as divans and arm-chairs, also for lining boxes, cartons, etc. The invention is also applicable to bags of other sizes and is adaptable to either single-walled or multi-walled bags I V A very large'pleated type bag best exemplifies the invention as there is a-substantial need for such bags, particularly of a construction which can be employed in" covering divans, arm-chairs and other similar articles of furniture for shipping and storing, bags for this purpose having been of a different construction than that 'whic characterizes'the present invention."

'The bags, previously made by hand; forthe purpose of covering div-ans, chairs and thelike have more or-less conformed to the general outline of such articles of furniture, being inverted over the same, and are satisfactory except from the standpoint of manufacture, being necessarily made by hand and involving a relatively costly method. a

The objects and purposes of the invention will become more apparent when it is considered that the jumbo roll is the largest 'un'it of paper commercially employed for automatic or continuous processing. It has been found byexperi'ence to be the largest and heaviest paper roll unit which can be satisfactorily handled by standard equipment. Considering further that the conventional method of fabricating bags is to fold paper longitudinally as itcomes from a roll; which reduces the circumference of the bag tube to something less than the width of the paper,- depending upon the bagconstruction, it has never been possible to manufacturethe' largest bags ofthe character described above from asingle roll for the simple reason that it is not practical to handle such a wide jumbo roll even if it could be produced under knownmanufacturing methods.

The presentapplication is a division of copending application, Serial No. 689,565, filed August 9; 1946, now Patent No. 2,511,031.

Among" the objects of the invention is to provide a new and improved bag of a type -particu' larly well suited for manufacture in large sizes.

Another objectof the invention is to provide a new and improved paper bag wherein companion sheets of material of uniform identical width and length are joined together so as to provide a paper bag of maximum size while efficiently and eiifez'itively utilizing said material.

Still another object is to provide'a new and im- 7 s ms proved-paper bag adapted to be made in exceptionally large sizes and of multiple .wall1c0n-,. struction wherein more than one width of paper. of maximumizroll width isemployed. g t.

Stillzfurther amongthe objects of the invention-is-to provide asnew'and improved bagjof construction adapted to -=utilize.-inore than :one width of so styled jumboipaper rolls, the paper being applicable in a plurality of pliesvand so arranged: that. an excess of thickness is not ,accumulated in one area. i 11.; This invention: contemplates a paper bagfor articles of large/size including front and rear walls and pleated-side walls. The paper bag of this invention may be; made from at least one pair-of companion sheets ofrmaterial, said sheets being of uniform and identical width; and length and having straight-unbroken longitudinal edges and transverse end margins. Each sheet includes an infolded longitudinally extendingnarr row panel of uniform width'provided along one longitudinalmargin of a-sheet, an infolded longitudinally extending Wide panelprovided along the opposite longitudinal margin of the sheet; said wide panel having an outfolded sealing strip of uniform width coextensivein length with the wide ,panel and the narrow panel. The sheets of a companion pair may be superposed with trans: verse margins. in opposed and aligned relation and with the sealing strip/of each sheet in ad-e hesive engagement with the. entire length of the narrow panel of the companion sheet; 7

An additional object of vthis invention is to de? signand provide a paper-bag wherein companion sheetsof material of identical width and length are each provided with panels extending .along opposite longitudinal margins of theJsheet and coextensive in length, one panel being .narrow and the other-panel being wide;v the wide panel having a sealing-stripcoextensive therewith and cooperablewith the narrow panel of the com-V panion sheet. foradhesive" engagement therewith; With these and l'otlier objects in view, the invention consists in the construction; arrang'e-' mentand combination of the various'parts of the device whereby the'objects contemplated are attained, as-hereinafter' more fully .set forth; pointed out in the claims and illustrated in the accompanying drawings, in which: Figure '1' is a side sectional view showing a schematic representation of parts of an apparatus upon which the novel bagmaybe made.il a Figure 2 is a top viewof the apparatus shown Figure- 1 with the upper strip 'of paper pare tially removed. 1' I Figure 3 is a cross-sectional view of the tube of paper made by the machine taken on the line 3-3 of Figure 1.

Figure 4 illustrates a bag which may be formed from a gusset tube made in accordance with the 5 invention.

Figure 5 is a diagrammatic, elevational view of the feed'end' of amachine set up-for making bags' of two-ply wall thickness.

Figure 6 is a foreshortened plan view of the ma- 1 chine showing an arrangement utilizing offsets;v

rolls for making a tube having a two-ply con- 1 struction.

Figure 7 is a cross-sectional views'ofa. baggtubes. made according to my invention in which the seams instead of being alonglthecenterfold, of the pleated side wall are locatedalohg aiametri-y I cally opposite edge folds.

Figure 8 is a cross-sectional view of anothe'r modified bag tube produced by my invention in go which the :seamsare midway; betweenz-the: center-:foldof the. pleated side walls andqtheiedge Figure 9 isa 'icross-section'al .view; ofaaismultb walled bag tube 1 produced ,by..my'.invention FigurexlO .is.;.a view -similar.-. to..Figure:.9" in Which the seams .of. a.-.double:.-wa1led bag are .dis-.

.tributed atdifferentlocations; One of the 1 chief dilfiClll'biEs; in making; paper bags: of -exceptional circumference: is .to. be able to handle rolls of paper stock which have sufficient. width; from which to form thebag; .There are occasions where paperxbagsgot exceptional circumference :are greatlyxin demand: The

manual: operations previously referred .to .for 7 making. suchpaper bagsare: slow, costlyand. in.-' efiicient'and cannot-be counted .upon to produce a consistently good product. under; all circum stances Consequently, if large paper bagsam to be provided ata cost which will permit .them 40 tobeii'used extensively; -some means must be pro:-

vided whereby they canxbe made economically. Whatever meansselected .must further take into consideration the fact thatlargel'bagsmust jusually be made of heavy-stock and. for-many purposes must-:be adapted to utilize twolon three of. numerous special features which. have been incident to processes of. a rsimilar kindz ina the past; In the drawingsthere; is .1 illustratedidia grammaticallythe ilocation ofitworolls Ill and H or paper stock. ;-.Although. forconvenience in illustration .two .ro1ls. only :are showmiit. :.will

readily be appreciated. that for .multiple': ply tubes the. paper foreach. half of, the tube maybe taken .from' separate rolls and brought. together in the.-.machine* prior}. to. folding;. the.. differ ent rolls beingofisetthemequired distance toprovide the necessary.staggeringofthe-seams; as will be subsequently described.

In the example chosen. for illustration paper is drawn from.-the roll .l0.in. theform'of a -sheet I2 which. is directed downwardlyasshown :in Figure 1,. and during its downward coursezis, defiected. inwardly: by a. deflecting roll; 13, frequentlydesignated as; a.tucker:roll; on each side, the deflecting rolls being mounted; uponlxaivertb 76 4 cal axis and being shown diagrammatically only in Figure 2. The deflecting rolls are adapted to form folds l4 and I4 on opposite sides of the sheet.

In order to properly locate and crease the folded-over margin portion, there are provided folding guides 15 on each side which are suitablysupported by convenientvm'eans inside the actual margins of thesheet or-"strip of paper. Curved ends l6 guide the paper into a proper position for completing the fold.

As the paper passes over the folding guides it is rolled or ironed down by means of rollers or tucker5:rolls;..| .1;,. one located on each side. A sup- .porting roll 18. holds the paper upwardly against thebolttomotthe folding guides.

It should be. noted that the fold I4 is preferably made slightly wider than the fold M. The eXtrawidth is to provide for a certain amount of paper to comprise a turned-back edge l9. For. turning back the edgejthere.'is provided a turneback guide 20-.onl'onesideionl -.of the apparatus, namely, the. near sidejas. .viewed 'in: ;Fig-.

ure 2.

. As the foldedsheetor strip of-papercomesoff the'guides, thev folds are pressed: firmly together by suitably driven-ironing IiollsZl:v and -22.-- The folded sheet designated by the referencer-char acter l2 then passes;undenthe;remainin tpon tion of themachine to a cutter .-25..- By. drawing the turned-back edge I9-between the rolls-2 l and 22 a sufiicient deflection-is madepossible :to. stretch the edgesatisfactorily. against theaturn: back guide 20.

At the, same time'as the-sheet: l2=;,l2' ;is:being formed a companion sheet orstripeof;.p aper=3ll.is being led from theroll H across theigtop of "the machine to a idler roll 3| .at, the extremeright: hand end. The sheet .30 is. reversed-indirection bytheidler-roH and passed-;-downwardly at .an angle Where fo1ds..32 and5:.3 Z'fa-r,e formedat the marginsv -by folding rolls. 3-3;. similari' -in. relative location and function. to; the'ro1ls-l3- previously described. Folding guides 35 perform azfuncr;

tion similar to-.the.guides-.--l-5 and are: similarly provided with curvedendsilfiw; V

After the folds -32;have::;been made; they :are pressed downwardly ;by.1the. rollers; 31;, one..=- Io-- cated on each side.- Arsupporting roll 38;.similar tothejroll 181s also provided;

In this instance, the fo1dv32 is slightly wider than the fold '32? so as to.-provide-.:enoughrmaterial for a turned-over'portion '39.?" ltrshould be noted; particularlm; howeveni. that: the turned.- over portion; 39 iglocateduponthe opposite side of the machinefrom the turnedeover' portion 19. A turn-back guide, 4.0 r is utilized; f0r.-.-this portion of the operation. Ironingrollslli and;v 42' press the foldssof the sheet together after; it-passes from the turninga guides completing. the. formation ofa foldedgsheettll Immediately following; passage ofythe sheet-3W of folded paper from the ironingrolls adhesive applicators 43, which maybe in'the formtof rolls mounted upon a, shaft 44; are located so as. to apply adhesive in :one case tothe outer face of the. turned-over portion 3.9- andini the other: case to the inside edge of the fold 327.. i

The sheet 30,- .39:? then passesdownwardly around an idlerroll 45.- which directs =it, gintovconr. tact withthe-folded sheet [2. The-arrangement of rolls maybe such that-the folded companion sheets 30 and-l2 are pressed: against each-other so that the adhesive appliedtothe folds; ofzone. ofthem. madef to sticlgto complementary.- folds-lot the other- The relationship of the two sheets following the adhesivexorgluing operation is illustrated graphically in Figure 3. Figure 3, however, shows the sheets distended one from'the other for the purpose of illustrating the locatio'nand character of the folds rather than being pressed. tight against each other aswould actually be the case immediately after passageof thesheets over the roll 45.

By way of example, a motor 60 is illustrated as having a drive connection GI to the shaft of the roll 22., Rolls 22 and 2| may, if desired, be geared together by a gear chain 55. A sprocket 5I is shown on the shaft of roll 22 around which is a chain 50 passing also around a sprocket .52 on the shaft 44. A gear chain 53, 54 may inter-connect, respectively, shaft44, the roll M and the roll 42, so that each of the respective shafts rotate in the proper direction relativeto movement of the paper. Finalpull rolls Bland 63 may be connected to the shaft 44 by a chain 64, the rolls being inter-connected by a set of gears 65. Paper then is pushed over a table 65 whereon it is sheared off to size by the cutteer 25.

Figs. 3 and 4 illustrate two views of a completed paper bag formed by adhesively securing a pair of companion sheets of material folded as above described. It will benoted that the paper bag is provided with front and rear planar walls and pleated side walls. The fold I4 provides a narrow panel extending continuously along one longitudinal margin of sheet I2, said panel being of uniform width for the entire length of the sheet. The fold I4 is defined by the longitudinal margin-a1 edge of the sheet and a first longitudinally extending. parallel fold line I411. The fold I4 provides a wide panel extending continuously along the opposite longitudinal margin of the sheet, said wide panel being of uniform width throughout the length of the sheet and defined by a second fold line I4b parallel to the adjacent edge of the sheet. The wide panel is provided with a third fold line I 9a parallel to the adjacent edge of the sheet and defining therewith a continuous longitudinally extending sealing strip or turned-back portion I9 of uniform width throughout its length and coextensive with the wide panel I4. The companion sheet 30 is formed virtually identically with said sheet I2.

The companion sheets I2 and 30' are thus provided' with identical panels, sealing strips and fold lines.

. As shown in Fig. 3 the sheets of a companion pair are adhesively secured to each other in superposed relation with the sealing strip of each sheet in adhesive engagement with the entire length of the narrow panel of the companion sheet. When in superposed relation, the trans verse margins of each sheet are in opposed and aligned relation. At one end of the paper bag the transverse margins are secured in suitable manner as shown in Fig. 4 for closing One end of the bag.

, While the paper bag illustrated in Fig. 3 shows each sealing strip secured to the narrow panel of the companion sheet adjacent to the longitudinal center of the pleated side wall, it may be desirable in'certain bag constructions to modify the width of said panels and sealing strips so as to provide a sealing strip secured to an opposed narrow panel at other points along the pleated side wall.

'An arrangement of the apparatus making possible the formation of tubes wherein the seams are located elsewhere than at the center fold of the pleated wall is illustrated in Figures 5 and 6'. These tubes in addition illustrate the formation of. tubes of multiple walls. The offsetting of the rolls of paper in Figures 5 and 6 is purely by way of example as it will be understood that offsetting to a different extent of the various rolls may be utilized in order to form tubes wherein the seams are located at various positions along the pleated wall.

Figure 5 shows the left end portion only of an apparatus similar to that described in connection with Figure 1 wherein two sets of rolls provide paper for the wall of each side of the bag. In Figure 5 asupporting roll I8 .is located in the same manner as described in connection with Figure l as are also the ironing rolls 2| and 22. The roll of paper It] in the example of Figure 5 is augmented by the presence of a second rollof paper III) spaced a short distance from the roll III. A sheet II2 of paper from the roll III) passes around the roll I9 joining the sheet I2, and both sheets together are folded by the tucker rolls I3 and I1.

In this instance, however, the rolls I0 and III) must be offset with respect to each other as best illustrated in Figure 6. This is necessary in order to provide an exposed portion I I3 of the sheet I I2 and a corresponding exposed portion II4 of the sheet I2. The folds illustrated in Figure 6 may be readily compared with corresponding folds and edges illustrated and identified in Figure 10.

In-order to form the opposite side of the bag, the roll II of paper must be augmented by the addition of another roll I I I. A sheet I30 of paper from the roll III joins the sheet 35 of paper from the roll I I as the sheets pass over the top of the machine to the opposite end where they are folded by the use of the tucker rolls 33 and 31 in conjunction with the folding guides 35 and turnback guide 40 as was described in connection with Figures 1 and 2.

"-In the last instance rolls II and I II must be offset with respect to each other by substantially the same amount as the rolls III and I I6 are offset with respect to each other. In addition to offsetting the rolls of each set, namely, the set consisting of rolls I I and III and the set consisting of rolls II) and I I0, one set must be offset with respect to the other set as is likewise aptly illustrated in Figure 6. The offsetting of the sets of rolls is required in order to provide a wide panel one one side for the rolls of one set and on the other side for the rolls of the other set, the necessity for this being illustrated particularly well in Figure 10.

In the case where a tube is formed of double wall thickness adhesive applicators 43' and 43" must be installed on both sides of the machine mounted upon the shaft 44 so that a strip of adhesive is applied to each ply for causing it to adhere to a corresponding portion of the ply forming the opposite side of the bag. In other respects the machine illustrated in Figures 5 and 6 contains the same essential features as the machine described in Figures 1 and 2. Conventional means of a well-known sort may be used to adjust the rolls to their proper oifset position, these means being omitted for the sake of clarity.

By way of example, in Figure '7 there is illustrated a tube comprising front and rear walls 14 and I5 having side walls 16 and 11 wherein the seam i located at aposition remote from center fold line 18 of the side walls. The wide panel I6 has a sealing strip I9 located near the top; whereas, a sealing strip for the sidewall 'II is locatedenearzthe bottom;:. By forming v .the

pleated side :wallsin" the manner shown: in'Figure 7, the walls may be printed upon easily and conveniently' in a manner which would not be possible'if'the side walls were provided with seams near the-center fold.v

In order, however, to make a tube .of the type shown in Figure '7, the roll of paper:forming the wall i4 would have to be offset with respectto thelroll of paper formingthe wall I5 by :an amountapproaching; the full widthiof the. wide panels. 1

Another variation is shown in Figure ;8 wherein seams BI. and .82 in. respective. pleatedside walls 83 and as. are located intermediate center folds 85 and theadjacent corners of walls .89 and 81 respectively.

Figures illustrates a tubesimilarito the tube ofFigure '7 but shows a tubehaving a'double wall thickness or in other words a two-ply .bag. .As

shown, the tube for" forming a two-ply bag has outer and-inner walls 9Iland 9I, respectively, forming one side of the bag and outer and inner walls 92 and 93, respectively, forming the: other side of the bag. The wall or ply 92 base wide panel '94, a sealing strip 9570f which is folded back upon itself fora width almost equal to the initial fold. The wall or ply;.93 has a similar wide panel 95 likewise witha sealing strip 79'! folded back upon itself but terminating along an edge 98 spacedinwardly from an edge 99 of the back folded sealing, strip 95. g This leaves an exposed margin of the .back folded sealing strip 95 to whichgluemay be applied.

The wall of. ply 90 has one short fold I09 which isadaptedto contact the back folded portionv 95 and be joined thereto, making a seam near the edge of the pleated wall. The wall or ply 9| has a longer fold IOI, long enough to reach over the back folded portion 91 and to be attached thereto.

On the opposite side of the tube the outer and inner walls form outer and inner wide panels I52 and I I33 but with the overlapping of the folds 7 arranged in slightly different order as is made I necessary by the requisite stag ring of the rolls of paper-which form the bag in order to maintain a paneluninterrupted by a seamas isillustrated on the right-hand side of the tube.

Figure 10 shows still another form of two-ply 3 tube having outer walls I94, I95, inner walls I95, I01, and seams. Ififland I09 on each side, .the outer seam I08 being near a corner and the inner seam near the center of the pleated wall..

It will be further appreciated that the location of seams can-be modified by. using rolls ofpaper of difierent width should occasion demand. 1 Also, tubes may be made with panels'of unequal depth in order tomake odd shapedgbags by resorting to a similar expedient of using rolls of paper of unequal width. A tube having perfectly smooth side walls uninterrupted by,-seams-may be'made followingthe pattern-of Figure '10, if. desired, so that the side walls of the bag may beijproperly printed uponsq I After the: tube has been formed'conforming-to any. one of; thexcross-s'ections shown in "Figures r 1 The.virtues'offa'bagiconstructedas herein de; scribed lie -.in the simplicity1of arrangementof large: elements. making it: possible. by; simple; ru ged means to handlerolls ofpaper ofexceps tional width and exceptional weight; .Although paper. rolls. of exceptional weight andwidth have been emphasized as important in the production offthe invention, 'it isto be 'appreciatedethat What I claimas new anddesireto secure by Letters Patent is:

1. A bag for articles of large size, saidv bag havin front and back wall panels and pleated side walls, said bag being made from at least one pair ofcompanion sheets of materialyesaid sheets being of uniform and identical width'a'nd length and having spaced-parallel; straight une broken longitudinal: edges and transverse mar. gins-g each sheet of a companion pairhaving ('a) an infolde'd; continuous,- longitudinallyextend ingnarrow panel ofuniform'wid-th- -along-the entire length of one longitudinal marginal edge of the sheet, said narrow panel 'being defined by such longitudinal marginal edge and a parallel first fold line; (b) an infolded, continuous, longitudinally extending wide panelof uni-form width adjacent the entire-length-of the other longitudinal marginal edge of the sheet," said Wide panel beingdefined by'a second fold line; spaced-from thefirst fold line and parallelthere to (c) a third fold line adjacentthe said other longitudinal marginal edge of the sheet; and

' (d) anoutfolded continuous,- longitudinally ex tending sealing strip of uniform Width defined by said thirdfold line and a, other longitudinal edge of the sheet and coextensive therewith the sheets of-a companion pair being identical and adhesively secured to'each other in superposed relation with transverse margins" inelig'ned relation and with the sealing strip of each sheet in adhesive engagement with the entire length of the narrow panel of the companion sheet; and means connecting said companion sheetsalong transverse margins at one end of'said sheets.

2; A bag for articles 1 of large, size,'said' bag having front-and back wall panels and pleated side walls, said bag being made from a plurality of pairs of companion sheets of material; said sheets being of uniform and identical width and length andhaving spaced parallel, straightum broken longitudinal edges and transverse margins; each sheet of a companion pair having (a) an infolded, continuous; longitudinally extending narrow panel of uniform width along the entire length'of one longitudinal marginal .edge of the sheet, said narrow-panel being defined bysuch longitudinal marginal edge and a parallel? first fold line; (b) an infolded, continuous, longitudinally extendingwide panel of uniform width adjacent the entire length of the other longitudinal marginal edgeof the sheet, said wide panel being defined bya secondfold 'lineyspaced from the first-"fold lineand-parallelthereto; (0) a third fold line adjacent the said other longitudinal marginal edge of the sheet; and (d) an outfolded continuous, longitudinally extending. sealing strip of uniform width defined by said third fold line and other longitudinal edge of the sheet and coextensive therewith; the sheets of a companion pair being identical and adhesively secured to each other in superposed relation with transverse margins in aligned, relation and with the sealing strip of each sheet in adhesive engagement with the entire length of the narrow panel of the companion sheet; means connectin said companion sheets along transverse margins at one end of said sheets, the sheets of each pair being transversely offset with respect to the sheets of another pair while maintaining coincidence of fold lines between pairs of companion sheets.

3. A bag adapted for shipping of articles of large size, said bag being normally closed at one end, comprising: a tubular portion formed of at least two companion sheets of material, said sheets being of uniform and identical width and length and having parallel straight unbroken longitudinal edges, and transverse margins; each sheet having an infolded continuous longitudinally extending marginal panel along each side of said sheet, one panel having greater width 10 than the other panel, the wider panel on one side having an outfolded continuous longitudinally extending edge strip of uniform width 00- extensive with said panel; said companion sheets being superposed for forming said tubular portion, the outfolded strips of companion sheets to be secured together being disposed on opposite sides of the tubular portion, each strip having an outer face adhesively secured to the opposed inner marginal surface of the infolded panel of lesser width of the companion sheet.

STANLEY G. YOUNT.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 146,271 Packer Jan. 6, 1874 326,592 Sawyer Sept. 22, 1885 1,682,839 Finn et al. Sept. 4, 1928 2,316,385 Abramson Apr. 13, 1943 FOREIGN PATENTS Number Country Date 382,207 Germany Sept. 29, 1923

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