US2146861A - Container - Google Patents

Description

Feb. 14, 1939. A. L.. sHERwooD ET A1.

CONTAINER Filed July l5, 1937 KRAFTBOARD CH IPBOARD CHIPBOARD GLUE PARCHM ENT GLU E PARCHMENT 5 4 l l INV Patented Feb. 14, 193e UNITED STATES PATENT OFFICE.

CONTAINER Albert L. Sherwood and James E. Annen, Kala-v mazoo, Mich., aasignors to Sutherland Paper Company, Kalamazoo, Mich.

Application July 15, 1937, Serial No. 153,694

11 Claims. (Cl. 229%35) The main objects of our invention are: First, to provide a container preferably of cylindrical form which is ,suitable for packaging oils and greases whereby the same may be conveniently retailed at filling stations and in stores.

Second, to provide a container of the type described which is rendered impermeable to oil and 'grease both at the side wall thereof and at the top and bottom closing members.

Third, to provide a container of the type described which is readily and cheaply manufactured and which is rigid and otherwise resistant to destruction in use. I

Other objects relating to details andv economies of our invention will definitely appear from the description to follow. The invention is dened in the claims.

A preferred embodiment 0f our invention is 2 Aillustrated in the accompanying drawing, where- Fig. 1 is a view in elevation, partially broken away and in longitudinal section, of the container of our invention.

Fig, 2 is a fragmentary enlarged view illustrating the construction and assembly of the cylindrical laminated side Wall and further illustrating sealing compound as applied thereto according to our invention.

Fig. 3 is a fragmentary magnified view in section illustrating details of assembly of the top or bottom member with the laminated side wall.

Fig. 4 is a fragmentary view illustrating a portion of the inner side of the laminated wall of our container.

'I'his invention relates primarily to a container which'is adapted to be used as a package for oils,

s greases, or other similar substances, which materials possess characteristics normally making it impossible to enclose the same in ordinary paper containers. Heretofore, such substances have largely been packaged in the well known tin containers.

An important feature of our invention isin the provision of a stili. brousv'or paper container made of kraft and chip board and rendered oil and grease proof by an inner sealing surface of vegetable parchment or artificial parchment. 'Ihis material is in a large measure grease proof or proof against permeation by oils, greases, and such substances; however, it is a fact that all fibrous materials, such as vegetable parchment,

or partially parchmentized paper, andevenfoil,' and Cellophane, and like materials, contain' very small openings known as plnholeswhich cause the materials to bewonly partially leak proof. Our invention comprehends the use of a plurality of plies of parchment or other thin lining material on the theory that pinholes in the individual plies are very unlikely to coincide when the plies are assembled, with the result that a 5 perfectly oil and leak proof structure is produced. Further important features of our invention will appear from the specification to follow.

Referring to the drawing, the reference numer- 10 al l indicates in general the cylindrical laminated side wall of a container which is closed at its open ends by top and bottom members 2 of similar construction.

The laminated side wan is made up of a plu- 15 rality of layers of relatively thick` paper board to provide a stii cylindrical body, in the following manner. Two plies 3, 4 of chip board, each approximately .015 inch in thickness,'are superposed on one another and locked together by a 20 film 5 of adhesive, the double ply chip board layer being wound spirally. A layer 6 of kraft board, approximately .025 inch in thickness, is wound upon and secured to the outermost ply of the chip board by a film 1 of adhesive, the 25 kraft board` also vbeing in the form of a strip wound spirally. A suitable conventional enameled` wrapper or label 8 containing any desired design or advertising matter is adhesively secured tothe kraft board layer by a film 9 of glue. 30

The inner or oil sealing surface of the side wall is formed by a double ply lininglayer of imitation parchment, each ply being of a thickness of approximately .0025 inch. 'I'he parchment 'plies I 0, Il are overlapped approximately one-half 35 their width in order to form a doubleothickness Y layer when wound and are each spirally wound as indicated at l2 on a suitable mandrel (not shown) whereby the winding joints are over' lapped and sealed. A lm I3 of adhesive se- 40 cures the double ply parchment layer to the inner ply 4 of chip board and an adhesive film Il locks the plies of the imitation parchment to one another. The lining strips are wound in overlapl ping relation, preferably with half laps as shown.- 45

successive layers are also staggered. In practice,

w`e use a dextrin glue as the alhes'ive; however the invention is not hunted to that particular For the purpose ofpreventing the oil w ith which vthc container is filled from the ends of the container wall during nlling, we applyasealing coating itat therawendsofthe container wall layers. We preferably use a coating which is a mixture of rubber latex and casein according to a well known formula and weapplythesamebysprayingtheendsandinner sides ofthe container wall as illustrated in Figs. 2 andgthelattergureillustratingthecoating i5 as viewed from the` inside ofthe wall. Inspection of Fig. 2 reveals that coating I5 is applied prior to the application -of label I, whereby the exterior appearance of thesame will not be Vmarred.

`Coating I5 has a double function; namely, it prevents the absorption of any oil that may drop upon or be splashed upon the wall edges during the filling and capping steps, and it further serves as a sealing medium as will be hereinafter described To complete the container, the top and bottom members 2, which are pressed out in cup'shape to provide walls It tightly engaging the inner s1de' "wa1l and an outer peripheral iiange il, are` in the cylindrical side wall and pressed The edge of nange I1 is bent reversely at il 'to provide a reinforced bead and a layer is or swing compound similar to that of coating I5 is placed in the channel formed between wall Il and flange l1, the said layer extending around the channel vand when brought into contact with coating II serving to eifectively sealtheupper end of the container wall.

After the top and bottom members are properly seated, similar steps being followed in the case of the bottom member as above described with reference to the top member, they are locked againstthesidewallbyspinningiiange i1 inwardly against the side wall to form the annular v'locking indentation 2l therein, or at least in the label and the outer kraft plies of the said side wall. Yith this locking/engagement, it will be' found that itwill be impossible toremove the top and vbottom members without destroying the container. Of course, the contents of the containerare placed therein prior to closing of one of the top or bottom members and the contents may be removed by puncturing one of the members.; Using. a container of this typeit isim- .possibietrexoveoneoftheendmembers for thevpurpose ofAadulterating or diluting the contents.

'Iheinnerorsealingsurfaceofthewallofour container is impervious to penetration by oils, orothersubstancesenclosedthereimdue, first,t otheleakproofqimlitiesoftheimitation f i-i which'is preferably employed, and second,tothefactthatthedouhieplyconstruc tion of thescalinglayerremovesanypossibility of leakage by .effectively the inevitable andthe piuralityoffilmsof adhesive, fourin number, stili further contrilmte to a perfect sealingetfectbyentirelyeliminatingthepossibiiityofinrooghoralongtheoonmnr vvall. Themulti-plywalistructmeinwhich'the pliesm'esecuredtngetherbytheadheslveisvery duced. Theendsealingofthetopandbottom ofthecontainwallandlockedtopandbottom members complete the provisions for pgooiing the container.

The inturned edge of the outer iiange Il of the end member stiifens` 'and reinforces the ange vPatent is:

and is effective inpreventing its opening up or 'yielding even when the can is subjected toa very substantial shock as may occur in handling or shipping.

Itwill'be understood that the container is designed primarily for containing liquid such as oil and the filled can is of considerable weight. This inturned edge also provides anengaging part 2l which when the flange is indented or crimped into the container wall'serves to eifectively resisten stripping of the cover. The sealing material indicatedat i5 effectively seals the Joint between the inner flange of the end member and the container wall and the sealing material Il supplements this sealing material I! and forms a very effective seal of the joint.

Although the lining plies are preferably of imitation parchment paper, it will be understood that other materials or combinations of materials may be used, the multi-ply lining layers being highly eiective in preventing leakage and overvcoming a very serious defect in previous structures.

We have illustrated and described our improvements in an embodiment which we have found very practical. We have not attempted to illus# trate or describe other embodiments 'or adaptations as`it is believed this disclosure will enable those skilled in the art to vembody or adapt our improvements as may bedesired.

Having thus described our invention, what we claim as'new and 1. In a'container for oii and grease, a cylindrical sidewall comprising a laminated body consisting of a plurality of plies of spirally wound superimposed chip board adhesively secured to each other, a relatively thick spirally wound out-'- er ply of relatively'tough kraft board adhesively secured to said plies of chip board, a label pro- 4vided with a moisture resistant coating adhesively secured to said kraft board ply, two relatively thin inner liner plies of imitation parchment spirally wound in overlapping joint breaking 'relation to each other and with the edges of the laps of each ply in overlapping relation, 'saidline'r plies being adhesively secured together and to the inner chip board ply, and iianged metal end members tted on said side wall with the anges of the members. being crimped into and forming locking indentations in at least lthe label and kraft plies of said side wall.

2. In a container for'oil and grease, a cylindrical multi-ply side wall comprising a relatively thick outer ply,a plurality of relatively thin inner liner plies of imitation parchment spiraliy wound in overlapping joint relation to eachother andwiththeedges ofthelapsofeach ply in overlapping relation, the end edges and inner sides of the ends of the multi-ply wall being provided with a sealing coating, and flanged metal end members tted on said side wall, the

flanges of the members beingcrimped into and desire tovsecure by Lettersand the end lof the wall and a side thereof adjacent the end being provided with plastic sealing material. t

4. In a container, the combination of a side wall comprising a laminated body consistingof a plurality ofplies of fibrous material adhesively secured to each other, the outer -ply being of relatively tou`gh kraft board, a label adhesively secured to the outer ply, and a plurality of relatively thin inner 4plies of imitation parchment spirally wound in overlapping Joint breaking relation to 'each other and-with the laps of each plyin overlapping relation, said linerplies being adhesively secured together and to the inner wall ply, and an end member having a peripheral channel receiving an end of said side wall and with the outer flange of the end member being crimped into and forming a locking indentation in at least the/ label and outer kraft plies of the said side wall.

5. In a container, a laminated side wall including aply of kraft board.' one or more intermedi- Aate filler plies' of chipboard, and a plurality of inner lining plies formed of relatively thin oil resistant material, and films of adhesive coextensive in area with said plies uniting each ply to an adjacent ply or plies.

6. A container comprising a side wall formed of a plurality of plies of fibrous material adhesively secured together, an end edge of the side wall havingga, coating of sealing compound thereon lapped upon the inner side of the wall, an end n member having a peripheral channel receiving said end edge, the outer edge of said'ange member being folded inwardly upon itself, said end member being peripherally crimped into and forming a locking indented engagement with said side wall, and a coating of sealing compoundlin said channel cooperating with said first named coating to seal the joint between said end member and side wall. v

7. In a container for oil and grease, a cylindrical` side wall comprising a laminated 'body consisting of a plurality of plies of spirally wound superimposed chip board adhesively secured to each other, a relatively thick spirally wound outer` ply of relatively tough krafirboard adhesively secured' to said plies'of chip board, a labelprovided with a moisture resistant coating adhesively secured to said kraft board thin inner liner plies of imitation parchment spirally wound in, overlapping joint breaking relation to' each other and with the edges ofthe laps of each ply in overlapping relation, said liner pues being adhesively secured together and to th inner chip board ply, the end edges ofthe multiply wall being provided with agsealing coating, and flangedv metal end members tted on -said side wall with the anges' of the members crimped int and forming locking indentations in at least the'label and kraft plies of said side Wall.

ply, two relatively the edges of the laps of each ply in overlapping relation, said liner plies being adhesively secured .together and tol the inner chip board ply, said chip board plies being approximately .015 inch in thickness, said kraft board being approximately .025 inch in thickness, and said imitation 'parchmentliner being approximately .0025 inch in thickness.' I

9. In a container for oil and grease,. the combination of a side wall comprising a laminated o body consisting of a plurality of plies of fibrous material adhesively secured to each other, the outer ply being oi relatively tough kraft board, a label adhesively secured to the outer ply, and a plurality of relatively` thin inner plies of imitation parchment spirally wound in overlapping joint breaking relation to each other and with theflaps of eachply in overlapping relation, said liner plies being adhesively secured together and to the inner wall ply.. and an end rmember having a peripheral channel receiving an end of said side wall and with the outer flanges of the end 'members being crimped into and forming locking indentations in at least the label and outer kraft plies 'of t e said side wall, said end member Vchannel beng pr'ovidedwith plastic joint sealing material. 1 o

10. In a container for oil and grease, the combination of a'side wall comprising a laminated body consisting of .a plurality o'f plies of fibrous material adhesively secured to each other, 'the outer ply being of relativelytough kraft `board,' l a label adhesively secured to the` outer ply, land a plurality of relatively thin inner plies of imitation parchment spirally wound in overlappingjoint breaking relation to each other and with dentations .in-at least the label and'outer kraft "plies of the saidl side wall.

11. Inv a container, a laminated side wall com` Y vprising a laminated body including a ply of relatively thick kraft material, one or more. intermediate ller plies, and,A lining plies formed of a plurality of strips of relatively thin imitation parchment, said strips being wound in mutually overlapping.- relation to oneganother and with the edges of the laps in overlapping relation, the

several plies being adhesively secured-together, and a coatin'g'of 4sealing compound on the ends ofthelaminated wall. o ALBERT L. SHERWOOD.

JAMESI; \ANNEN.

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