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Publication numberUS2555380 A
Publication typeGrant
Publication dateJun 5, 1951
Filing dateJan 21, 1946
Priority dateOct 26, 1940
Publication numberUS 2555380 A, US 2555380A, US-A-2555380, US2555380 A, US2555380A
InventorsKimberly Stuart, Wilson Allen B
Original AssigneeElizabeth R B Stuart
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 2555380 A
Abstract  available in
Previous page
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Claims  available in
Description  (OCR text may contain errors)

2 Sheets-Sheet l CONTAINER K. STUART ETAL June 5, 1951 Original Filed Oct.

KmsERLy 'STUART ALLEN B. WlLsoN S'rauch Q Hoffman AJUIN? 5,11951 K. STUART ETAL 2,555,380

CONTAINER original Filed oct. 2e, 1940 v 2 sheets-sheet 2 .zT-'14.5 1:. j]

-T' 9./4 SMQ/MM Kmsanv STUART ALLEN B. WlLsaN Sfmvch @Hoffman www Patented June 5, 1951 CONTAINER Kimberlyk Stuart, 'Menasha, Wis., an'dvAllen-B. `Wilson, Evanstomilll.; saidrWilson'assignor, by mesneassignments to Elizabeth R. B. Stuart, MenashaWiS.

"Original application October 26, 1940, Serial No. 363;060. f'Divide'd and this application kJanuary "21, 1946, Serial No.l642,544

f Claims. (Cl. 229-735) The present inventionA relates to containersfor dpackaging foods, liquids ...and any other su-bstances vand .to methods. of .making .such .con-

-A'further object' of the invention-,isftoprovide a novel spirally wound containerhavingan integral built-in thermoplasticlining. Preferably,

Vtainers. More particularly,.our invention is conthe lining materialissheet'rubber hydrochloride. cernedwith spirally Wound tubular containers 5 IA further object of-the invention is to :provide which are-linedtobe leak-proof and imprevious a novel spirally wound containerhaving asub to mechanical -or chemical action ofthe contents. stantially continuous, lining of material which is This isa division of ,ourapplication Serial. No. Vmoisture-impervious .and Achemically rinert --with 363,060 filed October 26, 1940-which issuedas respect to the contentsA of the container and UnitedStates Letters .Patent No. y2,393,347 on wherein aclosure member is sealed tothecon- January 22, 1946. `tainer and further secured thereto ybya clenched This.` is also a continuation-impart.of,ouryapmetal reinforcing rim. .plication Serial No. l 272,516,1iled May `8, `1939 .Further objects of the inventionwill .presently which was copending with said application Serial appear as the .descriptionproceeds in connection No. v 363,060 .and has sinCematured; into. United with the appended claims'andtheannexed draw- States Letters .Patent No. 2,281,889 dated ,May ings, inwhich: 5,1942. Figurevl `is an exploded view in section .of a The invention is .especia11ydesigned for Ipackagcontainer comprising atpreferred embodiment of ing food mixturesand liquids-in containers ,of the invention, priorto assembly of the container suitable size for retail sale, vand .the `preferred bodywith the end closure members; embodiment of the invention to be hereinafter Figure 2 is a sectional View illustrating the `rst described has .been found. tobe Verysatisfactory step in assembly of the container partsof Figure for papertbeer oansof two quart capacity or more. l wherein the bottomclosure member is attached Itwill be understood, however,..that. the scope of 25 tothe container body; the invention is not thus'limited but embraces Figure 3 is anY enlarged fragmentarysection containers forany substances. illustratingthe adhesive bond between the foil It has heretofore been suggested toline liquid linings of the bottom closure memberand the carrying paper containers with foilor cellophane container body member; but such linings have generally been inserted into Figure 4 is a sectional view illustrating the next otherwise, complete containers-.and this presents step in assembly of the containerwhereina reindifliculties of assembly. In practicing our inforcing metal rim isclenched along. the joint bevention, the lining .is incorporated` during manu- `tween the container body and the bottom closure facture. of the` container walls and toour knowlmember; edge We arethe iirstto make -a vspirallygwound Figure 5 is a section illustratingthe complete container of paper or like fibrous materialhaving .container wherein the top closure `member or -such a smooth, substantially continuousbui1tin cover is attached to the container body in the liner which is moisture and leak-proof and isirnsame manner as the bottom closure member; pervious to the chemical action of thevcontents. Figure 6 is adiagrammaticvview illustrating a With the above in mind, itis a major object of method of making the tubular container body the present invention to provide a novel inexwherein the liner strip is wound with a butt seam pensive spirally .wound paper or like fibrous conbetween convolutions; tainer having a built-in lining of moisture-im- FigureGA illustrates application of the adpervious material .which is chemically inert ,to hesive to the butt seam by the inner body wall the contents of the container. strip, wherein Ythe strip is provided witha narrow -A further object of the inventionsv to .provide strip Of adhesive OHS inner SurfaCe; a novel spirally `wound container having a sub- Figure '7 is a sectionalong line 'l-T of Figure l6 stantially continuous tubular. lining .of metal foil. illustrating the laminated .paper and. foil con- Preferably the foil sealed by struction of the liner strip; ya special latex 4adhesive chemicallyinertto .the Figure 8 illustratesa variation of the method contents of thecontainer. of. FigureV 6 wherein the paper -and foil liner strip is wound with an overlapped adhesively secured seam;

Figure 9 is an exploded View in section similar to Figure 1 except that the container body and closure members are lined with a thermoplastic sheet material;

Figure 10 is a sectional View illustrating the first step in assembly of the container parts of Figure 9 wherein the bottom closure member is heat sealed to the container body;

Figure 11 is a sectional View illustrating the next step in assembly of the container of Figure 9 wherein a clenched metal rim is secured along the joint between the container body and the bottom closure member;

Figure 12 is a section illustrating the complete container having the top closure member heat sealed to the container body and provided with a clenched metal rim;

Figure 13 illustrates a method of forming the liner employed in the tubular body member of the container of Figure 9, wherein a sheet of thermoplastic material is lap wound on a mandrel and its seams are heat sealed by a hot roller;

Figure 14 illustrates a variation of the method illustrated in Figure 13 wherein the thermoplastic strip is laminated to a strip of paper before winding on the mandrel;

Figure 15 is a section on line I5-I5 of Figure 14 illustrating the laminated construction of the liner strip of Figure 14;

Figure 16 is a section online I6--I6 of Figure 14 illustrating the butt seam between the wound strip convolutions before heat sealing;

Figure 17 is a section illustrating the liner seam of Figure 16 after it has been heat sealed; and

Figure 18 is a section through a flared end can provided with flat closure members and lined according to the invention.

Our invention briefly comprises making a spirally wound tubular container body having a substantially continuous inner lining which is moisture and gas proof and chemically inert with respect to the contents of the container, and providing the container with end closure members lined with the same material as the container body. The linings of the container body and the closure members are sealed to each other and comprise a substantially continuous envelope surrounding the contents of the container.

Preferably the container is lined with aluminum foil or a thermoplastic sheet material such as rubber hydrochloride or Pliofilm.

An especially important feature of the invention is our novel manner of making the tubular container body wherein we rst spirally wind suitable strip material on a mandrel to form a tubular liner and then, after sealing the seams of the liner, we build up further spiral layers of relatively heavy paper or like fibrous material until the desired wall thickness has been obtained. Where the liner material is sufficiently tough to withstand relatively rough handling and the tension required for winding it on the mandrel, as with sheet rubber hydrochloride or Pliolm, the initial step of making the liner comprises Winding an individual strip of this material. Where, however, the material is relatively fragile and easy to tear, as in the case of thin, light aluminum foil, we prefer to laminate it to a strip of thin backing paper before winding.

Foil-lined container Referring to Figures 1-8, the container comprises a tubular cylindrical body lil of heavy paper, cardboard, fiber-board or like inexpensive fibrous material, having a tubular liner Il faced with a substantially continuous, smooth lining I2 of metal foil, such as aluminum foil. n the illustrated embodiment of the invention, the container is provided with internally fitting shallow, cylindrical, cup-shaped bottom and top closure members I3 and I4 having foil linings I5 and I6, respectively.

Closure members I3 and I4 are suitably formed from paper, cardboard, berboard or like fibrous material; and linings I5 and IB are cemented thereto by a suitable adhesive such as the latex adhesive described in Stuart Patent No. 2,068,893.

Tubular container body ID is preferably constructed by the method illustrated in Figure 6.

Tubular liner Il is shaped by spirally winding a laminated strip Il upon a suitable rotatable mandrel I8. As illustrated in Figure '7, strip Il comprises a thin, tough, flexible sheet of paper I9 bonded in full surface engagement with a thin sheet of aluminum foil 2|. Preferably sheets I9 and 2| are adhesively bonded by the latex ad- I hesive above described.

Laminated strip I7 is spirally wound with its foil surface 2| contacting the periphery of the mandrel so as to comprise the inner surface of the liner tube and adjacent edges of the Wound strip are disposed in abutting relation. The width of strip I1 and the pitch of the spiral in which it is wound on the mandrel are matters of choice depending on the type 0f the container to be manufactured.

At the section indicated at 22 in Figure 6, thc liner tube consists of spirally wound abutting coils which are maintained in this position on the mandrel by winding tension. Beyond section 22, a narrow thin strip 28 of paper or like material having its inner face coated with a fresh layer of adhesive is spirally wound upon and along the butt seam between ladjacent coils of the liner tube. This adhesive is selected according to the use for which the container is intended, and a large number of adhesives are available including the latex adhesive above described. In general any adhesive may be used which will retain its strength during the life of the container and will not be softened by or mix with the contents of the container. This seals the butt seam at the section indicated at 22' in Figure 6. Just sufficient adhesive is supplied at the butt joint to fill the seam and insure proper attachment of the adjoining coils, and no excess adhesive is transmitted to the mandrel surface. Beyond section 22', a strip of paper, cardboard, or like fibrous material 23, the inner surface of which passes over a suitable adhesive coating roll 24, is spirally wound upon the liner tube. Strip 23 is preferably appreciably thicker Iand stronger than the liner strip and is coated with the latex adhesive described above.

As strip 23 is spirally wound about the liner tube, it is adhesively secured thereto and thereby assists strip 20 in retaining the convolutions of the liner tube in contiguous abutting relation. Strip 2li prevents excess adhesive from the inner surface of strip 23 from entering the butt seams between the convolutions of strip I1. This prevents oozing of excess adhesive to the mandrel surface. The pitch of strip 23 may be opposite to that of strip I'i if desired.

As shown in Figure 6A, strip 20 may be omitted and the inner surface of strip 23 coated with a thin strip of adhesive 23 located to fall directly vclosure member s upon 'and along the butt seam. By carefully controllingjthe viscosity and amount of adhesive at A23", there is no oozing of the adhesive between the abutting edges 'f strip I7 o'nto the mandrel surface.

u Beyond `the AWinding station of strip -23, a further strip 25 'similar to strip 23 is spirally Vtvound about the lmandrel 'exteriorly of Wound strip v23 to build up a secondlayer ofhrelatively A suitable roll 26 `coats the inner r' 4thick paper. face of strip 25 with our above described latex adhesive in the same manner as strip 23. Beyond strip 25, additional strips Vare spirally wound and adhesively bondedK in succession vuntil the container Vbody tubing is lbuilt up 4to'required wall thickness. The number of zlayers Wound about the liner tube is a matter of'choica YSince these latter Winding operations are conventional in the spiral can winding art, further description of the same is deemed unnecessary to understand Vthe invention.

`After thecontainerbody tubinghasbeen built up'to required wall thickness, it is cut into individual container 'body lengthsV in the usual vvmanner and is ready for incorporation in the complete container. o v l Tubular container body II'I, made as above de scribed, comprises a relatively stiff Cylinder of spirally wound paper or like fibrous `lflflalu'rial having a substantially continuous Vinner surface of metal foil. This inner surface of metal foil is smooth and uninterrupted 'except "at the spiral liner seams. The space between these seams is lled and sealed bythe latex adhesive l"supplied by strip 2B as above described. Strip 2!! and the several succeeding ladhe'sively secured paper layers retain the coils of strip "I7 against separation 4 While the usel oi the yabove-identified "latex Aadhesive is especially `satis?actory in practicing theinv'eniin because itis impvilis i0 meisvture and chemically inert vvfithurespe'ctfto beer, foods, and 'most mixtures andiliquids'vvhich fare usually pacliaged in'this manner, itis vWithin the scope of this inventionto employ any quick'ad'- hesive which is non-toxic for the particularlcontents of the container. The particular adhesive is usually selected for its inertness `-ivith"respect ,to the contents of thejcontainer, Constructed tom closure member I3 tothe container body byproviding a film orjlayerz'ljof vour` latex fadhesive between the 'adjacent fpilfsurfacesofjthfe closure member and` body. Filmiselastic'and adheres very'strongly'tofthe -f'oil surfaces. V

Many substances packagedvin sealed vcohtair1- ers contain orjproduce gases, which develop'substantial internal pressures -"With'in VVthe container which may increaseito -`such proportions afs-to burst `the closureqmember'seals. The canning'oi beeris a very' good exarnpleoil a problem of this kind. In orderto reinforce 'theffsealfandibond between our container: body and thebottom elfosure member, We provide` the joint between them with a continuousfshap'ed clenched "metali' rim strip having its 'opposite lat-eral Vedges biting `Vmore effective seal.

jinto'vj'the paper at opposite sides of the joint. The clenched rim 'and the method and apparatus for applying it to the container vmay be'th'at Adisclosed in United States Letters VPate'r'i't No. 2,253,962 issued May 26, 1942, but preferably We employ the serrated end rim disclosed in United States Letters Patent No. 2,342,715 issued February 29, 1944, which is especially suitable for securing closure members on containers.

Y 'After bottom closure member I3 has been'attabbed, the container is then provided With its contents and top closure member I4 attached to the container -body in substantially the same irianner as above described for bottom closure jmember 'I3 and as illustrated in Figure 5.

4The completecontain'er of Figure 5 comprises a 'sturdy cylindrical paper vcan Whereinrthe top, 'bottom and inner side Walls are lined with a chemically inert, 4moisture-proof envelope which has been incorporated into the can during the method "of its making and assembly above described. The interior of the can is perfectly smooth and the vexposed foil and adhesive portions of Vthe lining prevent leakage of the contents through to the relatively porous outer Walls Il), I 3 and I4. The can is further reinn `forced against rough handling 'and the development of internal pressures by the elastic joints Aat "21' and by Irims 2B and 29 'which also give it a neat and pleasing appearance externally, an especially desirable factor in retail trade. g

Figure 8 illustrates an alternative method of VWinding laminated strip II upon the mandrel. The successive convolutions of the Vspiral are slightly overlapped, with foil face 2l `provided along a narrow area at one edge with a coating of our latex adhesive by a suitable roll `3| so that, `during winding, successive convolutions'of the strip are adhesively secured to each other with alapped seam. The wound liner tubing section 4indicated 'at `32 is provided With such additional layers of paper as are required to build the container body tube to desired KWall thickness in the manner described in Figure 6.

It 'is ordinarily `a -matter of choice as to Whether a butt orlapped .seam is provided for the container liner. This choiceusually depends upon the vnature of the material to be packaged. The'lapped seam requires a `greater amount of material than the butt'seam, but it provides a The butt seam is easier to Wind and is perfectly satisfactory for most purposes, however.

The `internal*surface i of `a rcontainer, body provided vvith a lapped seam liner of Figure 8 is 'substantially as smooth as in a container having methods f of` making the "containen Referring "to Figure `9, the 'tubular'container *body .30 is provide'dwith a tubular liner 33 of Atlierrrloplastio sheet f' material. For purposes of Vthe invention* especially inthe canning of syrup,

beer, and other liquid foods and beveragesf'we have found that sheet 'rubber hydrochloride known under the trade'name of Pliolm is very satisfactory, but any other equivalent thermo- "plastic sheet material which is impervious to moisture and *at the Sametime 'chemically-ie sistuot to the factionfof the-contents ofthe-can may be employed. The container also comprises bottom and top end closure members 34 and 35, which are lined at 36 and 37, respectively, with the same thermoplastic sheet material. Closure members 34 and 35 `are suitably formed from paper or like fibrous material similarly to closure members I3 and I4, and linings 36 and 3l are preferably uniformly bonded thereto in smooth intimate full surface engagement by our latex adhesive.

Figure 13 illustrates the initial step of a preferred manner of manufacturing container body 32. A thin sheet of rubber hydrochloride is spirally wound upon mandrel I8 to form the tubular liner section indicated at 39. Strip 38 is preferably wound in such manner that adjacent narrow edge areas of the convolutions are lapped as indicated in Figure 13 and these lapped areas are subjected to combined heat and pressure, as by heated roller 4I.

Roller 4I is maintained at a suiciently high temperature to soften the overlapped strip areas which thereby fuse and become integral, and the pressure of roller 4I is sufficient to flatten this lapped fused scam to distribute the material uniformly and prevent undesirable bulges at the liner seams. The effect of subjecting the liner tubing to the heat and pressure of roller 4I is to fuse and Iweld the wound liner strip into a continuous integral tube. Following this welding operation, successive layers of paper or the like are spirally wrapped and adhesively secured upon and about the liner tube in the manner above described.

Roller 4I may beof any suitable length for insuring proper fusing of the seam of the liner tubing. Roller 4I is idly rotatably supported at the ends of pivoted arms 42 and 43, which carry the electrical wires for supplying current to the internal roller heater element, and is rotated by reason of its frictional contact with the driven liner tubing.

During ordinary operating conditions, roller 4I is held in contact with the surface of the liner tubing by its own weight and the force of springs 44 which react between washers 45 secured to control rods 46, pivotally connected to the outer ends of arms 42 and 43, and stationary abutments 47. Rods 46 are suitably interconnected and the mechanism operating mandrel I8 actuates suitable devices insuring that rods 46 are displaced downwardly automatically whenever rotation of the mandrel stops. This may be effected for example by a centrifugal switch 4i! or the like at the mandrel drive controlling a solenoid assembly 43 adapted to pull down rods 46. Springs 44 re-establish the roller on the tubular lining when the solenoid is de-energized. However, the exact details of this mechanism are not essential to a complete understanding of the invention, it being only necessary that roller 4I be displaced from the surface of the liner tubing while mandrel I8 is stationary.

While the above-described manner of applying heat for sealing the liner tubing seams is preferable, equivalent methods may be used without departing from the spirit of the invention. For example, heated roller 4| may be applied after one or more outer paper layers have been wound about the liner tubing, care being taken to accomplish this before the paper layers are so thick as to insulate the lining.

Beyond section 39, paper or fiber board strips are spirally wound and adhesively secured about the liner tube in the manner above described until the container body tubing on mandrel I8 is built up to desired wall thickness. The body tubing is then cut into lengths 30 which are ready for assembly into the complete container.

Tubular container body 30 thus manufactured comprises a relatively stiff paper cylinder which is mechanically strong and lined internally with a smooth uninterrupted coating of thermoplastic material. The relatively slight bulges where the seams of strip 38 are welded together are so smoothed and distributed along the container that they are not appreciable to the eye and do not interfere with the appearance of the container.

In assembly of the container elements, bottom closure member 34 is rst inserted into container body 33 so that the arcuate face of lining 36 is in uniform contact with end .areas of lining 33. Heat and pressure are then applied at the joint between closure member 34 and the container body in suicient degree to fuse the contacting areas of thermoplastic linings 35 and 33 until they are integrally united as shown in Figure 10. Pliofilm is such .an excellent conductor of heat that the application of a heated iron along the edge indicated at 34' in Figure l0 is suflicient to fuse the lining along the entire peripheral depth of closure member 34.

C-shaped rim 28 is then applied to the joint between body 3B and closure member 34 is illustrated in Figure l1. After the container has been provided with its contents, upper closure member 35 is then heat sealed to the container body in the same manner as member 34 and C-shaped rim 29 applied to reinforce the joint between closure member 35 and the container body as illustrated in Figure 12.

The finished container thereby,1 comprises a spirally wound paper can continuously and integrally lined with thermoplastic material which comprises a complete envelope about the contents of the container and which is gas proof and moisture impervious and chemically inert with respect to beer, food or other contents of the can. Furthermore, rubber hydrochloride or Pliolm possesses sufficient elasticity to withstand contraction and expansion resulting from temperature variations without injury to its sealing action. We have found that practically the thermoplastically sealed container provides a somewhat better bond between the container body and closure members than the adhesively sealed foil lined container.

Figure 14 illustrates a further manner of forming the tubular liner for container body 3U in the initial step of manufacturing that body. While sheet rubber hydrochloride is ordinarily sufficiently tough to withstand winding tension, it may be desired to employ very thin sheets of this material or to employ sheets of other thermoplastic material which are susceptible to tearing. In such instances, We laminate the rubber hydrochloride to a thin flexible sheet of paper as illustrated in Figures 14 and 15 where liner strip 48 comprises a thin exible strip of tough paper 49 secured to a wider strip of sheet rubber hydrochloride or other thermoplastic 5 I. Preferably the paper and rubber hydrochloride sheets are uniformly bonded by our latex adhesive above described, and the thermoplastic strip extends a substantial distance beyond the lateral edge of the paper strip as indicated at 52 in Figures 15 and 16.

As illustrated in Figures 14 and 16, strip 48 is wound upon mandrel I8 spirally and the adjaafstasie l9 centA convolutions are so lapped that the double thickness edge of each convolution is lapped over the extended thermoplastic portion 52 of the preceding convolution. This relation or" the lapped convolutions -is clearly illustrated in enlarged Figure "16.

Beyond the winding-station-of lstrip t3, heat and pressure applying` rollerlll Visapplied to the periphery oi the'wound-liner'tubing section indi cated at 55, and-this heat and pressure is sufficient to softenand weld theflapped Vareas Voi thermoplasticstripv 52 together to form the fused seamin'dicatedat 53 inf-Figure 17. During this operation, pressure ofthe roller is sufficient to substantially align the paper baokings 49 of the adjacent convolutions into substantially abutting relation as illustrated in Figure 17.

After the winding and heat sealing operations above described, the resulting liner tubing comprises a spirally wound strip of thin paper having its inner surface securely bonded and integrally lined with a coating of thermoplastic material. The liner tubing is then provided with one or more spirally wound and adhesively secured paper or like layers until desired wall thickness is attained as described above in the other embodiments of the invention and the body tubing thus formed is cut to desired lengths. Where sheet rubber hydrochloride is employed at strips 49 and 5I may be of the same width and wound on the mandrel with a butt seam between convolutions. Such a seam will seal upon application of heat and pressure similarly to the overlapped seam of strip 38 above described.

Figure 18 illustrates a further embodiment of the invention wherein the can body comprises a spirally wound cylindrical 'tube 54 having flared ends 55 which terminate in relatively flat lip portion 56. Tube 54 is manufactured by the usual methods of making such cans and is internally lined with a layer of moisture impervious, chemically resistant material 57 which may be the metal foil or the thermoplastic sheet material above described and which is incorporated during the initial steps of forming the tube according to the invention as above described.

As illustrated in Figure 18, lining 5l extends over lip portions 5S and thereby provides a seat for iiat closure members 58. Each closure member 58 comprises a still circular cardboard memberV having an inner liner face 59 consisting of a sheet of metal foil or rubber hydrochloride adhesively bonded thereto and adapted to engage lining 5l and the container body in annular contact at lip 56.

Linings 59 and 5l are sealed together by our latex adhesive where the linings are metal foil, or by heat pressure where they are thermoplastic. Reinforcing rims 28 and 29 are applied along the joints in the manner above described.

The mandrel may be heated where the lining is non-thermoplastic as in Figures l-7 to hasten adhesive setting at the butt joint.

Our invention provides an inexpensive safe manner of packaging oils, syrup, beer and other beverages and liquid foods, other foods and like substances. The built-in lining insures that such substances do not contact tinned or like surfaces which many people believe alter the taste. The can joints are reinforced to withstand high internal pressures', and to eliminate breakage due to rough handling.

The combined strength o1" the elastic joints between the can closure members and body and the clenched metal rims therealong is such that these joints withstand higher linternal pressures than the paper can body itself.

The invention may be embodied in other specific forms without'departing from the spirit or essential characteristics thereof. The present embodiments are"there`fore 'to be considered in alllrespectsa's illustrativeand fnot restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency 1of'the claims are therefore intended to be embraced therein.

What is claimed and desired to be secured by United States Letters Patent is:

l. A container comprising a spirally wound tube of paper or like brous material; a thin spirally wound moisture impervious wall lining said tube, means adhesively securing said wall to said tube; covers closing opposite ends of said tube, each oI" said covers being lined with moisture impervious material; means sealing the linings of said covers and tube in moisture tight relation so that the entire inner surface of said container comprises a substantially continuous moisture impervious envelope, and metal rims further securing said covers upon said tube, each of said rims comprising a narrow strip of metal disposed about and along the joint between the cover and tube and transversely arcuately bent so that its opposite lateral edges bite a substantial distance into the materials of said cover and tube at opposite sides of said joint with a tight grip.

2. A container comprising a spirally wound tube open at one end, a closure member at the other end of said tube having 'a peripheral portion overlapping With said tube, a heat sealed continuous thermoplastic lining on the inner side and bottom walls of said container and providing a flexible seal between the closure member and tube and a substantially C-shaped continuous metal rim clenched along and about the joint formed by the overlap between said closure member and tube, said rim having its opposite lateral edges imbedded in said closure member and tube respectively.

3. In a container, a spirally wound tube of paper or like fibrous material an integral lining of spirally wound, heat fused thermoplastic sheet material bonded to the tube an end closure member for said tube faced with thermoplastic material and heat sealed to said tube along coextensive peripheral portions, and a continuous rim substantially C-shaped in cross-section clenched about and along the joint provided by said coeXtensive peripheral portions of the tube and closure member.

4. A container comprising a spirally wound paper tube, covers at opposite ends of said tube, a continuous integral lining of thermoplastic sheet material bonded to said container, said tube and each cover being formed with coextensive sealed.


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

UNITED STATES PATENTS Number Name Date 485,158 Cwerdinski Oct. 25, 1892 1,299,031 Reynolds Apr. 1, 1919 Number 12 Name Date Greenewald Oct. 27, 1925 Hulbert Aug. 31, 1926 Halle July 2, 1935 Magill June 29, 1937 Cordiano Sept. 27, 1938 Fisher et a1 June 20, 1939 Von Sydow et a1. June 20, 1939 Harrison Sept. 19, 1939 Diot Dec. 12, 1939 Karl Dec. 31, 1940 Lenox Nov. 11, 1941 Stuart et a1 May 5, 1942 Graves et a1 Mar. 23, 1943

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Referenced by
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US2614406 *Apr 24, 1950Oct 21, 1952Carpenter Oliver WDrinking rim for beer cans
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US3156401 *Oct 17, 1960Nov 10, 1964Anaconda Aluminum CoContainer
US3157337 *Dec 20, 1961Nov 17, 1964American Can CoHelically wound fluid-tight container
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U.S. Classification229/4.5, 229/5.82, 156/583.1, 156/91, 156/69, 156/194, 156/190, 126/39.00M, 229/93, 229/5.7
International ClassificationB65D3/10, B65D3/00, B31C3/00
Cooperative ClassificationB31C3/00, B65D3/10
European ClassificationB31C3/00, B65D3/10