HUT70333A - Box for storing of gas-packed produkt - Google Patents

Abstract

A can comprising a can body having a top end provided with a seamed cover (4), a screw top (1) with a peripheral gasket (10) and an intermediate member (13) having at least one cut-out and disposed between the gasket and the edge of the can body. The cut-outs of the intermediate member enable venting of the space between the cover and the screw top during gas packing so that the top can be readily unscrewed prior to pulling-off or opening the cover. In addition, the intermediate member (13) includes a pre-scored blank.

Description

The present invention relates to a container, in particular a container which functions as a container for packaging or storing a product with gas.

Such containers are generally used for the packaging, i.e. storage, of products which require inhaled or inert gas or an inhaled or inert gas mixture and the closure of the container / box / hermetilcus for the product to be stored for long periods of time or in a sales space. maintained.

Such containers are particularly suitable for storing products such as powdered milk / powdered milk.

A typical type of container for this purpose is a rigid metal box for storing canned food, one end of which can be easily opened so as to open the entire opening. This easy-to-open end of the box is closed by a central plate having a groove in its circumferential region. The disc portion corresponding to this groove may be tear open by means of a tab so that the central plate can be removed from the box and its contents become accessible to the consumer.

Such packaged products are usually not intended to be consumed in their entirety at the same time, and several suggestions have been made to ensure that the box is closed between its partial emptying and the next consumption operation. According to one known solution, the opened box is sealed with a removable and removable flexible plastic lid. According to another solution for achieving a better seal, a screw cap with an internal seal is used; the inner seal is made of an elastomeric material.

It is an object of the present invention to provide a container or can that can solve the unexpected problems that occur when a large can is filled with an inert / inert gas in addition to the product stored therein.

This object is solved, according to the invention, by a container for the long-term storage of a large product in the presence of a large inert high gas, which is characterized in that it is positioned between the seal and the lid by at least one cut-through function as a through-hole nan.

Cans containing such a box body, a lid and a screw cap are currently generally filled by a four-piece connection to the box body in a conventional folding technique after the filling line has been folded.

The lid, which preferably functions as an easily openable four-piece, is connected to the body of the can by folding before the can is moved to the filling machine by a large filler. This provides the traditional seal required for long storage. The threaded cap is also supplied to the packing machine - filling machine - or to the person who wraps the pack. The purpose of the threaded cap is to ensure good sealing, even vaguely, to ensure that the lid is removed during use of the carton to provide easy access to the material inside the carton.

However, in order to allow the consumer to open the box without difficulty, the screw cap should not be tightly fixed to the box body.

During packaging wrap with inert / inert gases such as carbon dioxide and / or nitrogen, the box / container is filled from the opposite end of the lid and the screw cap, i.e. the screw cap is placed below when the filled box is placed in a vacuum chamber, and the end to be folded of the filled box is at the top of the rim of the box body. During the operation, a relatively high vacuum is created to safely remove / expel air in contact with the product. One or more inert / neutral gases are injected into the can and then the can is removed from the vacuum chamber to allow folding of the end portion.

If the screw cap is not tightened after screwing it in, a problem occurs when the vacuum expels the air between the screw cap and the lid connected by folding the box body. When the gas or gas mixture is injected by injection, the gas pressure tends to tighten the cap and seal to the creased edge of the can. Therefore, the vacuum under the cap cannot be equalized, and it is very difficult to unscrew the screw cap from the box body.

The present invention solves this problem by using an intermediate element. The cut (s) and / or cut (s) therein form a channel between the outer space surrounding the box and the space enclosed under the threaded cap / closure. The inert gas (s) can thus leak and compensate for the vacuum previously generated under the cap.

The invention thus provides for easy unscrewing of the screw cap. After the cap has been unscrewed, the lid can be removed. To this end, the lid is preferably constructed as an easily openable end portion made of metal or plywood, comprising, for example, a groove formed by a circular, tear-off portion and a tab attached thereto, as is customary in conventional similar applications.

In order to reseal the box and to properly preserve and protect the product / material / material contained therein, the intermediate member can preferably be replaced. The sealing of the threaded cap will then ensure reliable sealing when screwing the threaded cap onto the box.

In a preferred embodiment, the intermediate member has a predetermined portion, such as a tongue and a gap, and is preferably made of cardboard. By inserting the tongue and the slot, the intermediate element can be turned into a can. The spoon then functions as a metering or metering device for the product.

An important advantage of this solution is that it provides manufacturers with a simple and inexpensive solution to the problems associated with the packaging of such buckets. It is now a hygienic requirement that the spoon should not come into direct contact with the product when packing. A box having an intermediate element which can be turned into a spoon in its cap means that the packaging-filling machine or person does not have to deal with the packaging of a separate spoon, since it is included in the intermediate element in the cap.

The invention will now be described in more detail with reference to the accompanying drawings, which show a preferred embodiment of the box or container and some exemplary structural details thereof. In the drawings, Figure 1 is a schematic perspective view of a box with a screw cap;

Figure 2 is a bottom plan view of a larger scale;

Fig. 3 is also a vertical sectional view showing a portion of the box of Fig. 1 in a vacuum chamber;

Figure 4 is a perspective view of the spoon formed by the intermediate member.

The metal can of Figure 1 is used for packaging milk powder / powdered milk /. The box has a threaded cap 1 and a cylindrical box body 2 which is initially open at both ends and is adapted at one end to connect a folded bottom or bottom end to close its lower end and to the other end a folded inner lid 4 and a cap 1 which are provided for closing the upper end of the box body 2 can also be connected.

The inside of the box body 2 has an upper region 5 comprising a recess grooved in the wall of the box body and an upper flange 6 formed by multiple folds to which the inner lid 4 is connected by folding. so that the folding of the 4 lids forms the body of the box pe * · · · · · · · · ·

7 hinges, designated 7 in Figures 1 and 3.

In the upper region 5 of the box body 2, six ribs 8, formed by pulling from the inside side / forming a metal thread, are formed in the same way and form together a thread. The cap 1 comprises six metal-formed conductors 9 spaced at identical lateral intervals, which together form a conduit system that cooperates with said six barrels 8 to provide a threaded connection between the box body 2 and the cap 1. The cap 1 also has a circumferential seal 10 (see Figure 2) made of an elastomeric material.

According to the invention, an intermediate element 13 is fitted between the rim 7 of the box body 2 and the peripheral seal 10. E _z is the intermediate member 13 is usually of cardboard but may be constructed of any flexible material which is deformable as shown in Figure 4. The spoon 20 / deformable /.

As shown in FIG. 2, the intermediate member 13 in this embodiment is designed as a disc having a diameter large enough to engage the disc 1 in the cap and automatically engage under the conduits 9, these conduits and the seal 10. between.

Intermediate member 13 has recesses 144, 14B, and 14C which are radially inwardly oriented so that intermediate member 13 covers the seal 10, except where the recesses 144, 14B, and 14C form gas-through openings,

- 8 which, as will be seen below, function in the packaging.

In the intermediate element 13, a piece of plate 19 is delimited by perforations in accordance with the dotted line in Fig. 2, which serves to form the spoon 20 of Fig. 4.

The disc 19 has three parts. 4 21 portions correspond to the handle of the spoon 20, while portions 22 and 23 together form the pan / dip 24 of the spoon 20. figure/. The portions 22 and 23, after closure of the cutout 14C, form the matching tongues 25 and slots 26. / / are fixed to each other. The cut-out 14C thus has a dual function: on the one hand it serves as a through opening for the packaging operation and on the other hand it is an integral part of the spoon 20.

Cutouts 14A, 14B and 14C as through holes! its function can best be understood from the sectional view of the box body shown in Fig. 3, showing the box in a vacuum chamber under the shield where the box is placed for injection of an inert / neutral gas / gas / mixture. The can is filled with powdered milk and the inner lid 4 is fastened to the can body 2 by folding. The cap 1 is loosely screwed to the end of the box closed by the lid 4 by inserting the intermediate element 13 between the flange 7 of the box body 2 and the seal 10.

The other end of the box body 2 is simply closed by the bottom 3 attached thereto.

A high / high / vacuum is produced under the shroud, i.e. in the vacuum chamber, so that it is enclosed in the box and closed under the cap 1

- 9 air leaves. A mixture of carbon dioxide and nitrogen gas is then injected into the box. The possible flow sticks of the gas mixture are shown in Fig. 3.

Figure 5A shows arrows.

A portion of the inert gas mixture flows along the arrow A_ below the loosely fitted bottom 3 to the powdered milk product. The other part of the inert gas mixture penetrates along the B njil into the circumferential space 17 beneath the cap 1 below the side rim of the cap. The gas mixture then flows freely through the passageway formed by the cutouts 14-A, 14B and 14C into the space 18 between the inner lid 4 and the cap 1. The vacuum previously present under the cap 1 in the space 18 is thus equalized / compensated, and the removal of the cap 1, i.e. opening the box, can be accomplished without difficulty.

In the absence of the intermediate element 13, the flange 7 of the box body 2 would be embedded in the seal 10 under the pressure of the inert / neutral gases, thereby preventing gas flow in the direction of arrow C in FIG.

Immediately following the gas wrapping, the box is conveyed to the folding box, where the bottom 3 is folded onto the box body 2.

The invention is, of course, not limited to the specific embodiment exemplified above, but may be practiced in various ways within the scope of the claims.

Claims (7)

Claims A container for storing with gas one or more products which can be preserved in the presence of one or more inhaled and / or inert gases, having a box body (2), a screw cap (4) and a screw cap (1) comprising a circumferential seal (10) wherein an intermediate member 13 is provided between the seal 10 and the cover 4 having at least one cut-out 14A, 14B, 140 acting as a through opening. Box according to claim 1, characterized in that the box body has a bottom (3) connected by / 2 / folding. 3. A container according to claim 1 or 2 ^wherein: said fit the intermediate element / 13 / of the cap / 1 / inner side of the threaded. 4. Box according to one of claims 1 to 3, characterized in that the intermediate element is made of cardboard. 5. A box according to any one of claims 1 to 5, characterized in that the lid has / 4 / a circumferential groove / 11 / and a tab / 12 /. 6. A box according to any one of claims 1 to 6, characterized in that the intermediate element (/ 13) which can be converted into a spoon / 20 / 7. A box according to any one of claims 1 to 6, characterized in that the intermediate part (13) is a portion (19) which can be folded into a spoon (20) which can be folded into a fold.