US2005349A - Sealed package and parts thereof - Google Patents

Description

June' 18, 1935. M. H. RANEY 2,005,349

SEALED PACKAGE AND PARTS THEREOF' y Filed Jan. 4, 1933 INVENTOR- /yarw/zmzqy UNITED ys'ra'riis PATENT o-Frica Marion H. Rainey,` Flushing, N. Y., assignor to Anchor lllitpr & Closure Corporation, Long f Island City, N. Y., a corporation of New York Application January 4, 1933, Serial No. 650,081 l 19 claims'. (c1. ais-se) The present invention relates to sealed pack- .a `sealing, disc treated `to gradually release the ages, and .more particularly to an improved pressure within a container, .without permittingA package and the parts thereof adapted to release entrance of air into the packa'sey excess pressure therein. Another object of the invention is to pro'- 5 Certain products, such asveiervescent salts, vide a lpair of sealing discs adaptedto seal a 5 when sealed, tend to create a pressure within the container against incomingmoisture and adeptpackage. This is due to the fact that the lsalts ed to vent excessive pressure within the packcannot be completely dehydrated before they age, without impairing the effectiveness of the are sealed and necessarily contain water of crys- Seal.

l tallization which, upon slight decomposition of AnOther Object iS t0 provide sealing means 10v the salt, causes effervescence. As a result, the Particularly adapted to be used in connection product within thetpackage creates a substantial With existing typeS 0i' Closure eene. l pressure. Upon opening thel package', due to A further object of the invention is to provide the excessive pressure, a part of the product is an improved closure and/:package particularly likely to be blown out of the container, causing useful for products likely lte generate Presente 1:5

the purchaser to think that something is wrong within-the package. t

with the product. In other instances, caps may Other andfurther objects of the invention be forced out of proper sealing position by ex- Will be Obviousupon an understanding' of the cessive 4internal pressure and fail to seal the illustrated embodiment about to be described, package thereafter against incoming moisture. 01 Will be indicated in the appended Claims, and 2o' As a, result, the moisture within the atmosphere various .advantages not Yreferred to herein will causes further decomposition' of the sali; and occur to one skilled in the artf upon employment may spoil the entire contents of the package. 0f the inVentiOn in Praetiee- 'I'he above contingencies are very objectionable, A plfeferled' embodiment 0i' the invention` hasl as since they create dissatisfaction on the part or been theseh'for purposes of illustration and de*v 25 the consumerand often cause serious accidents, SGriPtiOn and iS ShOWn in the accompanying due to the excessive pressure created within the drawing. forming n part 0f' the Speeiiieetien, packages. wherein 'I'he use of ordinary screw caps with the usual Fig- 1 iS e SeCtiOnal View illustrating e Dreliners has not been satisfactory for the reasons ferfed impediment 0f the Present inventiOn: 30 noted above. Attempts have been made hereto- Fig- 2 1Sv an enlarged-fragmentary Sectional fore to provide a package which would relieve View illustrating Pressure being relieved by the the pressure in a container, but such attempts Sealing means;

- have resulted in an inferior seal, which permit- F18. 3 is a sectional ,View illustrating asslishtly ood the product to deteriorate, or in a 'sealV im, different embodiment of the present invention; a5 en tpensive to be practical. In most cases, the and U o cost was increased greatly and the sealing eiil- F18- 4 1S' en 'enlarged fragmentaryr sectional oiency decreased greatm view illustrating another embodiment -of `the v The present invention aims to overcomefthe Present nVentiOn- 4 above dimculties by providing a simple, inexpen- Referring again t0 the drawing. ndmore par- 40 sive sealing means adapted to be used in conticularly t0 FS- 1 there 1S Shown a Cntainell nection with standard types of caps and conhaving suitable screw threads or lugs 2 at subl famem In this way, an improved package stantially the upper end thereof adapted to coop. t adapted to prevent pressures therein is provided, crate with Screw lugs .0n a cli-'mire cap Pref' without materially increasing the cost lthereof erably he containr iSmade 0f glas'andiima 45 and without impairing the sealing emciency. vided Wlth any desirable thread' niS/h, such as: An object of the invention is to provide an n ContinuOnS thread 01 en interrupted thread inexpensive sealing means adapted Ito vent a However, it has been found desirable t0 utilize package when pressure accumulates therein. interrupted threads 0r lne', projections-I having- 5 Another object of l the inventionv is to,v proan inclined surface 2a merging into a subston.; 50

vide a sealed package adapted to `gradually tially straightvhorizontal surface 2b lhaving a relieve excessive pressures in a package and .to stop portion attheiend thereof. retain sumcient pressure to prevent entranceof The container may be sealed by a closure cap air into the package. y I having a cover portion 5 andfa kdepending Another object of the invention is 'to provide skirt 6,- having its .lower-edgerolled into a wire 55 edge or bead 1 to conceal the raw edge of the metal. Suitable projections 9 are formed from the wire edge 1, which are adapted to engage the threads 2. If desired, suitable corrugations I may be provided in the skirt 6 to facilitate gripping of the cap during application and removal thereof. While the present closure is shown constructed of metal, in some instances it may be desirable to form the closure cap of moldable material adapted to embody artistic designs and colors which enhance the appearance of the package.

To carry out the objects of the present invention, a suitable sealing liner II is placed within the skirt of the cap so that it fits above the mouth of the container. Preferably, this liner is made of material such as oil paper, "Cellophane, or the like, which is impervious to moisture and air pressure, so that the liner may provide an air-tight seal at the rim of the container. In order to relieve pressure within the package, an aperture I2, of suitable size, is provided in the liner II and any pressure generated by the product will pass through the aperture I2. Above and adjacent to the liner II. a disc I4, of less effective sealing material, is provided. Preferably, the disc I4 is formed of cardboard, pulp board or other substantially compressible material, so that it acts as a cushion between the cap and the liner II to hold the latter resiliently against the rim of the container and to conform to any irregularities in the rim of the container. Preferably, the disc I4 is substantially impervious to moisture but is sufilciently porous to relieve any substantial pressure within the container. While good results may be obtained in this manner, it has been found that better results are obtained by partially impregnating or coating the disc I4 with moisture resisting material, such as parailine. Preferably, the disc I4 is subjected to a bath of molten parailine until it has absorbed from ilve to fifteen per cent of the paraillne. This percentage of parafline is based upon the increased weight of the disc after the paraiilne has been applied thereto. It has been found that cardboard and the like, when subjected to a paraiilne bath, is sufiiciently porous to relieve the pressure but is resistant to the entry of air and moisture. In this manner, any substantial pressure within the package may be relieved through the aperture I2 and through the disc I4. At the same time, incoming air and moisture will not pass through the liner I4. It has been found that paramne produces a surface coating on the liner I4 substantially impervious to gases and also causes the members Il and I4 to adhere more or less to each other so that gases, in escaping from the container, have to pass through disc I4 from the aperture I2 to the edge of the disc, as shown more particularly in Fig. 2. Likewise, any air or moisture, to enter the container, must permeate to the center of the disc I4 to reach the interior of the container. The paramne coating on the liner I4, together with the apertured disc II, have been found to be effective in sealing the package against entry of air and moisture, which is important. If desirable, the liner II may be bonded to the disc I4 with any suitable adhesive.

By utilizing interrupted threads 9, another advantageous result is attained. The angular, in-

clined portions serve to draw the cap downwardly into vsealing position, while the straight horizontal portions hold the cap in a predetermined position with respect to the mouth 0f the container. Since the horizontal portions are denitely spaced from the mouth or rim, the cap will be sealed with substantially the same tightness in every instance. Likewise, the liners will be compressed substantially the same amount in every package, whereby the eective porosity of the liners I4 will be uniform. In this manner, the sealing means in every cap are responsive to release the pressure Within the package at substantially the same internal pressure. For this reason, the effectiveness 'of the seal against pressure may be accurately controlled by varying the amount of paraiiine applied to disc I4, or by increasing or decreasing the thickness of the disc. If continuous threads are utilized, the same result may be attained by .applying the caps with automatic machinery adapted to seal the caps with the same degree of tightness in every instance. It has also been found that the percentage of parafiine may be varied within predetermined limits to control the pressures in the package.

In Fig. 3, a slightly different embodiment of the present invention is illustrated, wherein a closure cap is provided with suitable screw threads I3 and a dome-shaped cover portion I8 which provides a substantial air space above the disc I4. This space serves a two-fold purpose, namely, it provides an air space into which pressure may be temporarily discharged through the disc and also permits the liners to iiex or bulge upwardly when excessive pressures are created within the package. The latter result is particularly desirable, since it permits the liners to flex without exing the cap, whereby the annular zone I1 of the cover portion remains in sealed position to hold the impervious liner II against the rim of the container. Another advantage is that when the disc I4 iiexes upwardly, it is slightly stretched or expanded, whereby the porosity is increased to permit the pressure to be relieved more rapidly.

In Fig. 4, a slightly different embodiment is shown, wherein a suitable aperture 20 is provided in the disc I4. Preferably, aperture 20 is substantially in alignment with the aperture I2 of the liner II, whereby pressure within the package may pass directly into the middle of the disc I4 and then outwardly therethrough to the outer edges, as illustrated by the arrows. The above construction may be utilized with either a cap having a flat cover portion or a cap having a dome-shaped cover portion, as shown in Fig. 3. If desired, the aperture 20 may be spaced to the side of aperture I2 or a plurality of spaced apertures may be provided to facilitate relief of pressure through the liner I4. However, a single aperture has been found to give excellent results. 'I'he paraine forms a surface coating which forces the gases to pass through the middle of the disc I4 and substantially prohibits passage through the surface thereof.

'I'he above described devices are preferably made by utilizing standard types of closure caps which can be made with existing machinery. The liners II and discs I4 are preferably cut from rolls of the desired material by automatic machinery which, at the same time, may provide the apertures I2 and apertures 20. The cardboard material for the disc I4 may be subjected to a bath of parafiine prior to or at the cutting of the discs, until it has absorbed substantially ve to fifteen per cent of paraiiine. The liners II and I4 may 'be placed in the cap 4 by the cutting machinery or by hand to aspervious liner Il against the rim of the container through the intermediation of the resilient disc I 4. The disc I4 is compressed at the sealing zone to hold the liner Il firmly in position and to provide a secure seal. Any pressure created within the container by decomposition of the products is relieved by passing through the aperture I2 in liner Il and then through the middle of the disc I4, as illustrated more particularly in Fig. 2.

It will be seen that the present invention provides a simple inexpensive closure which will vent a packageat a desired pressure without irnpairing the effectiveness of the seal against external moisture. The cap may be manufactured by existing machines and may be made of metal or moldable material such as plastics. These caps may be provided either with interrupted or continuous thread engaging means adapted to engage corresponding means upon a container. The liners can be provided with apertures without increasing the cost of the Vclosure and are made from any desirable material adapted to accomplish the labove described results. The simplicity of the closure kfor achieving these results is a feature of the vinvention.

As various changes may be made in the form, construction and arrangement of parts herein without departing from the spirit and scope of the invention and without sacrificing its advantages, it is to be understood that all matter herein is to be interpreted as illustrative and not in a limiting sense.

Having thus described my invention, I claim:

1. As an article of manufacture, a closure cap comprising a cover portion, a depending skirt, a relatively porous liner provided with ya coating of parailine, and a non-porous liner substantially bonded to said first liner having an aperture therein.

2,. As an article of manufacture, a closure cap comprising, in combination, a cover portion, a depending skirt, a liner adjacent to said cover portion formed of compressible material such as cardboard and the like having a coating of parailine thereon, and an cil paper liner adjacent to said first liner having an aperture therem.

3..As an article of manufacture, a closure cap comprising, in combination, a depending skirt having container engaging means therein, a compressible liner partially saturated with parailne adjacent to said cover portion, and an impervious liner adjacent to and beneath said rst liner, said second liner having an aperture therein substantially at the center thereof.

`4. As an article of manufacture, a closure cap comprising, in combination, a dome-shaped cover portion, a depending skirt, a compressible liner partially saturated with parafne adapted to tagainst the marginal portions of said cover portion, and an impervious liner adjacent to said rst liner having an aperture'thcrein.

5. As an article of manufacture, a closure cap '3. comprising, in combination, a'cover portion, a depending skirt, a substantially porous compressible liner partially saturated with moisture resisting. material, and an impervious liner adjacent to said first liner having an aperture therein.

6. As an article of manufacture, a closure cap comprising, in combination, a cover portion and a depending skirt, a substantially porous liner having an aperture therein, and an impervious liner adjacent to said first liner having an aperture therein.

7. As an article of manufacture, the combination of a disc liner impregnated with parafllne and an oil paper liner bonded to said disc liner and having an aperture therein.

8. In a sealed package, the combination of a container having cap engaging means thereon,

a closure cap having a cover y,portion and a depending skirt provided with means adapted to engage said means on the container, arelatively porous compressible liner partially saturated with moisture resisting material, and an impervious liner substantially bonded to said first liner having an aperture therein.

9. In a sealed package, the combination of a container having cap engaging means thereon, a closure cap having a cover portion and a depending skirt provided with means adapted to engage said means on the container, a relatively porous compressible liner impregnated with moisture resisting material, and a second liner adjacent to said first liner having an ap.- ertureV therein.

10. In a sealed package, the combination of a container having cap engaging means thereon, a closure cap having a cover portion and a' depending skirt provided withn'ieans adapted to engage said means on the container, a slightly porous vliner adjacent said cover portionvhaving..

an aperture therein, and an impervious liner adjacent to said first liner adapted to seal the rim of the container, and having anaperture therein adapted to relieve pressure within lthe container.

11. In a sealed package, the combination of a container having a plurality of interrupted cap engaging lugs Aor threads, said lugs being provided with an inclined surface adapted to draw a cap downwardly and va. horizontal Surface deiinitelyspaced with respect to the rim of the container and adapted to hold the cap in a predetermined sealed position, a closure cap having a cover portion and a depending skirt provided with lugs adapted to engage said lugs on the container, a compressible liner adjacent to said cover portion adapted to permit the passage of gases under pressure therethrough, and

a second liner adjacent to said rstliner having an aperture therein, said liners being compressed a predetermined amount by reason of the horizontal portion of the lug on the container.

12. A sealed package, comprising a glass container, a closure cap sealed upon said container. said cap having a cover portion, a depending skirt, and a liner of pulp material having an aperture therein, said aperture being adapted to permit pressure within the container tobe released by passing laterally -between the two surfaces of the liner.

13. As an article of manufacture, 'a closure cap comprising in combination, a cover portion, a dependingskirt, and a liner made of a substantially porous material,` the two surfaces of said liner being coated with moisture resisting material, said liner having an aperture therein to permit excess pressure in a package to be relieved by permitting the gases to escape between said two surfaces.

14. As an article oi' manufacture, a liner comprising a compressible substantially porous disc having its two sides coated with parafilne, and said liner having an aperture therein to ypermit pressure within a package to be relieved by passing between the two sides of said liner.

15. As an article of manufacture, a closure cap comprising, in combination, a cover portion and a depending skirt provided with means adapted to engage cooperating means on a container, a disc formed o1' slightly porous material adjacent said cover portion, and a disc formed of impervious material adjacent to said rst disc adapted to seal the rim of a container, and having an aperture therein adapted to relieve pressure within the container.

16. As an article of manufacture, a closure cap having, in combination, an imperforate cover portion, a depending skirt provided with. means adapted to engage cooperating means on a container for holding the cap thereon, a compressible and slightly porous disc liner of pulp material adjacent said cover portion, and an oil paper liner adjacent to said rst liner adapted to engage and form a seal on the rim of the container, said oil paper liner having an aperture therein adapted to relieve pressure within the container.

17. As an article of manufacture, a closure cap comprising, in combination. a cover portion, a depending skirt, and a liner of pulp material having its lower surface coated with moisture resisting material, said liner having an aperture therein adapted to permit pressure to pass laterally between the surfaces ot the liner.

18. As an article of manufacture, a closure cap comprising a cover portion, and a depending skirt provided with means for engaging and holding the cap on a container, a disc formed of compressible porous material adjacent said cover portion adapted to permit gases under pressure to leak therethrough and a second disc substantially thinner than said first disc, said second disc being made from a more effective sealing material than said first disc and having an aperture therein adapted to relieve pressure within acontainer.

19. As an article of manufacture, a closure cap comprising, in combination, a cover portion and a depending skirt provided with means adapted to engage cooperating means on a container, a disc formed of slightly porous material adjacent said cover portion, and a second disc formed of impervious material adjacent to said first disc and bonded thereto adapted to seal the rim of a container, and said second disc having an aperture therein adapted to relieve pressure within the container.

MARION H. RANEY.

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