DE1944654A1 - Sealing lid for containers with an interior space under overpressure or underpressure - Google Patents

Description

BRAUNSCHWEIG MUNICH

Continental Can Company, Inc.

633, Third Avenue

New York 17, N.Y. / UNITED STATES

"Sealing lids for containers with an interior space under overpressure or underpressure"

The invention relates to a closure cap for containers with the interior space under overpressure or underpressure.

3s is common in the packaging industry to place sealing lids on containers whose interior is under overpressure or underpressure. For example, when packaging coffee, a vacuum is created inside the container. In some cases of containers in which there is an underpressure or vacuum inside, the closure caps and containers are designed without screw threads, ribs or similar fastening devices, so that the closure lid is exclusively under the influence of the atmospheric Pressure can be maintained on the container. It is therefore essential to blow off the container by destroying it, in order to prevent the

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SAD ORIGINAL

Remove the vacuum inside the container and open the container to be able to. Due to the destruction of the peripheral edge, however, it becomes impossible to open one in this way To close the container again.

To avoid this disadvantage, a sealing cover is identified according to the invention in that it has a cover body with a lid mirror in which there is an opening

is located, which is closed by the extension of a pull handle is, so that the pull handle pulled out by removal or detection with its extension from the opening = and in this way releases the opening in the cover surface, through which an air or gas exchange then occurs takes place, through which the pressure equalization between your container interior and the environment is created Allows opening of the container or the removal of the closure lid from the container.

You invention intends to design the new cover so that a seal surrounds the extension of the pull handle and ensures a hermetic seal of the opening in the lid surface, whereby the extension of the pull handle extends over extends the seal addition, so that after removing the pull handle with its extension and an opening in the Seal arises.

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8AD OFTENWAL

According to a further feature of the invention, the extension and the pull handle is optionally made of the same material either in one piece or separately from one another, wherein in the case of separate training, the extension or the one in the opening part inserted in the mirror has the shape of a rivet.

The aforementioned and other not yet mentioned features as well Advantages of the invention emerge from the following description of the exemplary embodiments shown in the drawings.

Fig. 1 shows a partial plan view of a container with equipped with the closure cover designed in accordance with the invention is.

FIG. 2 shows a detail of the cover according to FIG. 1 in an enlarged, drawn-out representation.

FIG. 3 shows a sectional view of the cover according to FIG along the line 3-3 in Fig. 1 extending cutting plane ·.

Fig. 4 shows a further embodiment of the new cover in partial view and pulled apart.

FIG. 5 shows a representation corresponding to FIG. 3. Sectional view of the cover according to FIG. 4.

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Pig. 6 shows a further embodiment of a detail of the new closure cap in plan view.

Pig. 7 shows the detail of the cover according to Pig. 6 in a sectional view, the cutting plane corresponding to FIG Line 3-3 in Pig. 1 runs.

Figures 1 to 3 show a closure lid 10, with which a container C, for example made of glass, plastic or metal can be closed. This container C has a neck N at the opening end, which is at an opening edge B ends, which is equipped with a shoulder, a bead or a lip. The container C is with a provided filling material not shown. It is assumed in the following that the interior of the container C stands at and during the closing under a negative pressure.

The closure lid 10 includes a mirror 11 which passes to be nes AuBenumfang in an annular channel 12th Sex creates a ring-shaped channel 12 which opens up a sifting point S which serves to connect the sealing lid 10 to the opening edge B of the container C in such a way that a hermetically sealed seal is achieved. The closure lid 10 merges at the outer edge into a lid edge 13 which ends in an upwardly and inwardly directed retaining rib 14 which engages under the lip or lip B of the opening edge. FIG. 3 shows that acting between the opening edge B and the retaining rib 14

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BATH ORIGINAL

Locking. The lid edge 13 is sufficiently flexible. designed to ensure that the retaining rib 14 can be moved up over the shoulder of the opening edge B to remove the cap 10 from the container C. It should be noted, however, that the essential part of those force which holds the spine lid 10 on the neck H of the container C, of the external atmospheric pressure acting on the lid, J is generated.

In the middle of the cover mirror 12 an upwardly open »circular ring-shaped channel 15 is formed, and in the middle of the ^; There is an opening 16 in the area enclosing the channel 15. The opening 16 is generally rectangular in shape. The shape of the opening 16 can, however, be varied as desired, as will emerge from the following description. The opening 16 is used to ventilate the interior of the container C as soon as an inserted into the opening 16 -; Portion 17 which is formed as an extension of a let ^l Ziehgriffea 1Θ, is pulled out of the opening 16th The pull handle 18 I has an opening 20 which is used to insert a finger and which makes it easier to pull out the part 17 engaging in the opening 16. A pair of legs 21, 22 is used while pulling the pull handle 18 or ·. Raising as an abutment when the pull handle 18 is pivoted upwards (see Fig. 3). The movement is shown in the figure by arrows β ing e i- * ^{net #} . 009824/0127

19Λ4654

In order to ensure a hermetically sealed seal between the part 17 engaging in the opening 16 and the opening 16 in the mirror 11, a seal 23 is provided which is applied to the inner surface of the cover mirror 11 in such a way that the opening 16 or the part 17 engaging in the opening is tightly enclosed. The seal 23 is located in the cavity which is not provided with a reference number and which the annular groove 15 encloses. The sealing material of the seal 23 is selected so that it has a sufficiently high adhesive force to hold the part 17 engaging in the opening 16 in the position shown in FIG. 3. In this case , however, it is ensured that the adhesive force which is thereby exerted on the part 17 is so low that it can be overcome by hand for pulling it out.

When the container C is to be opened, its interior is first ventilated. To this end, the pull handle 18 is grasped and turned counterclockwise when looking at the Pig. 3 ». swiveled up. During this pivoting movement, the legs 21 and 22 serve as pivot abutments and the part 17 engaging in the opening is increasingly pulled through the seal 23 until the opening 16 is finally free and the entire pulling handle 18 can be removed. As soon as the opening 16 is uncovered, an opening is also created in the seal 23. Particular attention must be paid to the fact that the

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16 engaging part 17 over / the seal 23 downwards extends (Fig. 3) »to ensure the formation of an opening in the seal 23 SU when the pull handle 18 and with it the in the opening 16 engaging part 17 are removed. If an opening is formed in this way, air can freely enter flow into the interior of the container C until a pressure equalization is created. The closure cap 10 can now simply be from Hand and without permanent deformation or destruction of the lid edge a 13 can be removed from the container and then put back on again when the container is closed again target.

Reference is now made to FIGS. 4 and 5, in which a further possible embodiment of the closure cover is shown, which coincides with the features of the cover 10 in many parts. One exception, however, is that the Lid 30 does not have a rectangular opening 16 in its mirror 32, but an opening 31 which is circular in cross section. This circular opening 31 is normally of a part 34 engaging in it closed, which is formed like a rivet with a head 35 and a shaft 36 and is manufactured separately from a pull handle 33. The shaft 36 extends through an opening 37 in the pull handle 33, which is in a. Extension 38 of the pull handle 33 »namely sy. is el. en

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a pair of legs 40 and 41 is located. The rivet-like part 34 engaging in the opening 31 is like FIG. 5 clearly shows by using a seal 42 in herme- " table tightly closed seat held.

The cap 30 is operated in the same way as the cap 10. After a counterclockwise upward pivoting of the pull handle 33 in the direction of the unmarked arrows in Pig. 5, the shaft 36 is pulled out of the opening 31, so that in the seal 42 an opening is formed through which / 6 allows pressure equalization between the interior of the container and the ambient air is.

Reference is now made to FIG. FIG. 6 shows a pull handle 45 which is identical to the pull handles 18, 33 and differs from these only in that it has a part 46 which engages in the opening in the cover surface which is designed as a one-piece tubular rivet-like body, which can best be seen in FIG. 7. The tubular portion 46 is in an opening 49 in a lid mirror 50 received and by means of a seal 51 hermetically kept tightly closed in the lid. A container, which is equipped with the pull handle 45, can in a simple manner in that the pull handle 45 is raised counterclockwise

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is, we.rden ventilated, because it engages in the opening 49 Part 48 is pulled out of the opening, and in "the seal 51 an opening for the passage of a gaseous Medium remains.

Although a number of exemplary embodiments of closure lids have been described above, which are primarily intended for Containers can be used which have an interior space under negative pressure, it is obvious that the The closure lid described can also be used for containers and vessels, the interior of which is under overpressure. Of the Closure cap 10 according to Pig. 1 to 3 can also be used to close metallic can bodies where a internal overpressure prevails, with only a different shape of the circumference is required to the lid in to connect a more secure fit with the can body. Such a modification can, for example, be achieved through the use of a double fold to connect the lid and body. On the other hand, however, the lid edge 13 can also have threads or locking ribs or similar parts can be equipped to connect the "lid to a container, its Inside has an overpressure. It is only necessary to ensure that the ones used to fasten the cover Measures are chosen so that a secure fit of the Cover opposite the in the sense of removing the cover

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-10-

- to -

ensure effective internal forces

As already mentioned above, a sealing material with adhesive properties is used for the seal for closing and sealing the parts 17, 36 and 46 inserted into the opening. _{In addition, the parts 17 f} 36 and 46 engaging in the opening in the lid surface have very small surfaces or cross-sections, so that it is easy to prevent these extensions from being driven out of the opening under the influence of the internal pressure in the container against the effect of the adhesive force can be. This means that additional holding devices or measures for plaguing can be dispensed with, if the cross-sections of the parts engaging in the opening are small enough and the adhesive strength of the sealing material is large enough to allow the parts engaging in the openings to resist the forces exerted on them to hold on.

Although preferred shapes and arrangements of the parts of the cover designed according to the invention are shown or arranged in the foregoing. have been described and explained, it should be mentioned that numerous modifications of the details, the shape and arrangement * tion of the parts are possible without departing from the essence and content of the invention expressed by the following claims To deviate.

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Claims (10)

- 11 claims Closure lid for containers with an interior space under overpressure or underpressure, characterized that the cover (10,30) has a cover body with a cover mirror (11,32) and one provided in the mirror has opening (16,31,49) which is closed by means of a closure part (17,36,46) which is releasably held on the cover surface is, which is equipped with a handle part (18,33,45) to expose the opening in order to exchange a gaseous medium between the interior of the container and the environment to enable. 2) closure cap according to claim 1, characterized that between the cover mirror (11,32) and the closure part (17,36,46) a seal (23,42,51) is provided and that the closure part upon removal at the same time an opening in the seal from the cover surface generated so that the exchange of the flow medium by the uncovered opening in the cover surface and through the opening in the seal. 3) closure lid according to claim 1 and / or 2, characterized characterized in that the closure part is designed as a pull handle (18,33,45) and one in the opening ("16,31,49) of the cover area accommodated part (17,36,46), which is used to close this opening serves. 009824/0127 4) Closure cap according to one or more of the claims 1 to 3, characterized in that that the part (17.46) received in the opening (16,31,49) is integrally formed on the pull handle (18,45). 5) Closure cap according to one or more of the claims 1 to 4, characterized in that the pull handle (33) and the one for locking into the opening (31) gripping part (36) formed separately, but attached to one another. 6) Closure cap according to one or more of claims 1 to 5 »characterized in that that the part (17) reaching into the opening (16) for closing is a bent extension (17) of the pull handle (18) is trained. 7) locking cover according to one or more of the claims 1 to 6, characterized in that Dafi the received in the opening (49) part (46) ale a · ¹ existing βtückig from the material of the pull handle (45) molded onto the pulling handle tubular extension (48) of the pull handle is formed. 8) Locking device according to one or more of claims 1 to 7, because "denotes that the 009824 / 0Ί27 ■ - - 13 - . "in the opening. (31) in the mirror (32) inserted part (36) is formed separately from the pull handle, has a head (35) and with a shaft part (36) in the opening in the cover surface (32) and an opening (37) is inserted in the pull handle (33). 9) Closure cap according to one or more of claims 1 to 8, characterized in that daS the part inserted into the opening (16,31,49) extends completely through the seal (23,42,51), 10) Closure cover according to one or more of claims 1 to 9, characterized · characterized in that the closure part (17,36,46) extends beyond the inner surface of the cover surface (11,32) and has an end which extends beyond the seal (23,42,51) also extends. 009824/0127 Empty soap JiA · '<. * (& IhU