RU2425785C2 - Package of composite "cardboard/polymer", method of its manufacturing (versions) - Google Patents

Abstract

FIELD: packing industry.

SUBSTANCE: package is made of a composite "package/polymer" and comprises a shell with a longitudinal seam and provided at one end of the shell, a folded and a welded bottom. At the upper end of the shell there is an enveloping collar, where a cover is fixed with the possibility of removal. The collar is installed on a frame connected to the upper area of the shell.

EFFECT: package has a simple design and stacks well.

21 cl, 15 dwg

Description

The invention relates to packaging from a cardboard / polymer composite, consisting of a packaging shell provided with a longitudinal seam, and from a packaging provided on one end of the packaging, the folded and welded bottom of the packaging, as well as a method for its manufacture (options).

Packaging made from a cardboard / polymer composite has been known for a long time and is available on the market in a variety of forms and forms. For example, they serve as beverage packages or also as packages for other food products.

It is known that packages should be equipped with an opening assistant in order to make it easier for consumers to access the product. To this end, as a rule, an element is provided in the upper region of the cardboard / polymer composite packaging blocking the tapping opening provided for in the packaging of the cardboard / polymer composite. The tapping hole serves to pour out the product.

With the element covering the tapping hole, we can talk about a tear-off film strip, while removing the tapping hole.

In addition, it is known that the frame surrounding the tapping opening should be fixed on the packaging of a cardboard / polymer composite. The frame may have a lid that opens the tapping opening when opened. A film strip can again be provided between the lid and the tapping hole, which must be removed the first time the lid is opened in order to reach the product.

Alternatively, before the first opening, the lid may be articulated together with the frame. In this case, at the first opening, the lid partially detaches from the frame and releases the tapping hole.

In addition, the frame can also be equipped with a drain spout and serve as an opening assistant.

The frame may also have a threaded tube onto which a screw cap may be screwed. In particular, a screw cap can be used to ensure that when opening for the first time, a perforation hole in the packaging material from a cardboard / polymer composite breaks and a pour hole is created.

The previously mentioned elements for covering the tapping hole, in particular, can be designed so that they make it possible to reseal the packaging of the cardboard / polymer composite.

The known cardboard / polymer composite packaging has the disadvantage that, due to, in most cases, a very small filling opening, they are suitable only for liquid contents. In addition, the known packaging made of a cardboard / polymer composite with integrated high-spill elements cannot be stacked well and therefore cannot be optimally placed in a small volume for transportation and / or storage.

Appropriate packaging is known from US-A-5236120 for a package made of a cardboard / polymer composite from a packaging shell and with a packaging bottom folded and welded on one end of the packaging shell. This package is closed by a lid covering almost the entire cross section of the vacated hole, which is removably fixed. The shaping of the upper edge of the known composite packaging is structurally laborious.

The following packaging container with a lid covering the entire cross section is known from DE-A1-3641385. In this known package, the top edge of the composite package consists of a rolled edge onto which a removable lid is printed by heat sealing. And getting the rolled edge is structurally laborious.

The technical result of the invention is to simplify the design of the packaging of the composite "cardboard / polymer", also suitable for non-fluid products, and which is well stacked.

This technical result is achieved in a package made of a cardboard / polymer composite according to the invention in that an envelope collar is located at the upper end of the packaging shell, and that the lid is removably attached to the collar, and that the collar is located on a frame connected to the upper region of the packaging shell .

By means of the flange of the flange, the lid can be fixed with the possibility of removal on the packaging of the cardboard / polymer composite with the folded and welded bottom of the package. In this case, the lid can be structurally designed unified with the packaging from the cardboard / polymer composite and, due to the removal and thus disclosure of the entire cross-section of the packaging from the cardboard / polymer composite, also makes it possible to remove products containing the components as pieces as a whole and protecting packaging from the cardboard / polymer composite.

At the same time, it was found that the packaging of the composite "cardboard / polymer" has sufficient stability in order to meet the requirements of production, as well as marketing and trade.

Particularly preferred may be the use of packaging from a composite of "cardboard / polymer" also for products, mainly not having a fluid character. Thus, the use of packaging made of a cardboard / polymer composite according to the invention is suitable for yogurt and other types of food containing components in the form of pieces. In this case, these types of food can be eaten directly from the packaging of the cardboard / polymer composite after removing the lid. For example, thanks to the large filling opening, it is possible to “carefully” take out any vegetable and meat products.

A further advantage of the invention is that always a flat lid, thanks to appropriate structural designs, can facilitate, for example, overprinting on a single and intended outer surface of a cardboard / polymer composite package.

In a particularly preferred form of execution, the packaging shell is obtained from a rectangular cut-out blank, as this ensures non-waste production.

According to another technical solution of the invention, the cover may consist of a film (foil) or composite material "cardboard / polymer". Thus, it is possible to obtain a cover especially simply and economically.

According to the invention, the bead is located on the frame connected to the upper region of the packaging shell. In particular, the lid may be secured to the shoulder before and after connecting the frame to the upper region of the package shell. The framing can be obtained by injection molding. Thus, it is possible to economically realize many forms.

A particularly preferred embodiment is characterized in that the lid is welded onto the bead. The lid, however, can also be glued or heat-sealed.

Regardless of how the lid is secured to the shoulder, the lid can be re-closed so that, after partial collection of the product, the rest is further protected. It is already known from US-A-3272422 that the composite packaging can be structurally designed with a resealable lid.

In addition, the packaging shell may be imprinted. As a result, an effect can be achieved, especially promoting sales. For printing, all known methods can be applied.

The invention is not limited to a particular form of overprinting. In particular, the imprinting of one possible intermediate layer and / or coating layer of the packaging material is encompassed by this invention.

By appropriately shaping the cross section of the packaging shell, in particular round, oval or rectangular with rounded corners or without rounded corners, an abundance of various types of packaging from a cardboard / polymer composite can be obtained. At the same time, the forms can be reconfigured to the product and to the desired external effect and presentability.

In addition, it is possible to provide particularly advantageous forms for transport and warehouse logistics, which make it possible to transport and store the largest possible packaging of the cardboard / polymer composite in the smallest possible amount. Due to the parallel planes of the bottom of the package and the lid, in addition, it is possible to stack the packaging of the cardboard / polymer composite according to the invention well.

Particularly advantageously, the bottom of the package can be made rectangular, for example folded as a flat pediment. As a result, the bottom of the package can be structurally designed, in particular strong, as a result of which any package made of a cardboard / polymer composite itself can stably stand in an open state. Thus, a packaging made of a cardboard / polymer composite can be put to the surface during the food process or while taking the product without the product coming out.

In a further embodiment, an additional protective cover may be provided, the protective cover being able to re-close the cardboard / polymer composite package after opening the cover.

Thus, a consumer can simply once again close a once opened packaging made of a cardboard / polymer composite and thus preserve the freshness of the remaining product.

In particular, the protective cover may be locked with a geometric closure on the packaging of a cardboard / polymer composite (cuff cover), and may also be welded, glued or heat-sealed.

By providing a frame due to the special structural design of the frame, a reliable locking of the protective cover on the frame can be carried out. Especially mainly for this, the frame is structurally designed so that it has at least one element for locking the protective cover.

The frame may have at least one perimeter-mounted sample for locking the protective cover. However, it is also possible that the frame has at least one perimeter protrusion for locking the protective cover.

In this case, by a special choice of protrusions and samples, good retention of the protective cover can be ensured, and besides, the minimum material needed to obtain the framing can be kept.

According to the method, the solution of the problem is divided into the following steps:

- obtaining cut blanks from the web of composite material,

- heat-sealing the two edges of the cut workpiece in one longitudinal seam so that there is a packaging shell,

- providing for the frame and envelope flange on the packaging shell,

- obtaining a one-sided open container by applying a lid on the shoulder,

- sterilization of a one-sided open container through the bottom opening,

- if necessary, rotation of a one-sided open container,

- filling from the bottom of the product with a one-sided open container and

- folding and welding the bottom of the container to a strong bottom of the package. Alternatively, the solution to the problem according to the method is divided into the following steps:

- obtaining cut blanks from the web of composite material,

- heat-sealing the two edges of the cut workpiece in one longitudinal seam, so that there is a packaging shell,

- obtaining a one-sided open container by folding and welding the bottom of the container to a strong bottom of the package,

- providing for the frame and envelope flange on the packaging shell,

- sterilization of a one-sided open container through the upper end of the packaging shell,

- filling the product with a one-sided open container,

- sterilization of the lid and

- applying a cover to the bead.

Thus, two methods are provided for solving the problem: so, first it is allowed to put on the lid, fill the package from the cardboard / polymer composite at a later step, and then get the bottom of the package or first get the bottom of the package, fill the package from the composite at a later step Cardboard / polymer, and then cover.

In this case, with the above methods, all the features of an object according to the invention can be obtained, such as, for example, the cross-sectional shape of the packaging shell, folding of the packaging bottom and its strong performance, welding of the lid and printing of the lid and packaging shell.

It is especially easy to fold the bottom of the tank if the cut preform is provided with bit lines or fold lines before forming a longitudinal seam. In particular, the bottom of the package can be made in a simple, rectangular shape.

Due to the fact that the bottom of the package is first sealed with a bottom seam and that thereafter, the packaging ears that occur during folding are pressed to the bottom of the package and thus fixed on it so that the bottom surface is formed by a concave vault, a particularly strong bottom of the package can be obtained, since thus, the packaging of the cardboard / polymer composite stands essentially only on the four outer edges of the bottom of the package.

The invention is explained in more detail below using the drawings, depicting only preferred examples.

Figure 1 shows a cut blank from a web of composite material,

figure 2 - the packaging shell on the mandrel, in cross section by a horizontal plane,

on figa-2C - various structural design of the longitudinal seam,

figure 3 - the bottom of the package, in a plan view from below,

figure 4 - the packaging shell, depicted only partially, with the superimposed frame on a vertical section,

figure 5 and 6 are the following examples of the packaging shell of figure 4,

Fig.7 is a frame with a shoulder, top view,

Fig.8 is a vertical section of the frame along the line XIII-XIII in Fig.7,

Fig.9 is a frame of Fig.7 and 8 with a locked protective cover in a vertical section,

figure 10 is another form of execution of the frame, a top view,

figure 11 is a vertical section of the frame along the line XVI-XVI in figure 10 and

on Fig - the following form of execution of the frame, a top view.

1-3 represent intermediate steps in the preparation of a cardboard / polymer combination packaging according to the invention.

4-12 represent the following execution forms.

Figure 1 represents a cut blank 1 obtained from a web of composite material. For cutting can be applied all known methods, such as, for example, cutting with a jet of water or carving. In addition, the composite material web may have various layers and be imprinted. Particularly preferably, a cut-out blank 1 with a rectangular format is selected, since non-waste production is thus ensured. In addition, the cut blank 1 has bit lines or fold lines 2. Thanks to the bit lines or fold lines 2, subsequent folding of the cut blank 1 is greatly simplified.

Figure 2 shows that the cut blank 1 is laid around the mandrel 3, and the two edges 4 and 5 of the cut blank 1 are connected by heat sealing in the longitudinal seam 6.

As can be seen in figa, mainly, if this is located inside, therefore, adjacent to the mandrel 3 edge 5 is made cleaned from the upper layer. To do this, the edge 5 is first cleaned on the side, turned away from the mandrel 3, in a certain area. Following this, the edge 5 is bent and, if necessary, is fixed that one half of the cleaned area is superimposed on the corresponding other half. Therefore, in a simple manner, the fact that later the product comes into contact with the cardboard of the cut blank 1 can be prevented. In addition, further complete sterilization can be ensured.

As shown in FIG. 2B, the edge 5 can also be protected by an overlapping sealing strip 7, which can also be heat-sealed. In addition, as shown in FIG. 2C, the sealing strip 7 can also be arranged U-shaped around the edge 5. In particular, by jointly feeding the sealing strip 7, upon receipt of the cut blank 1, the sealing strip 7 can be fixed on the edge 5.

Due to the longitudinal seam of heat sealing, depending on the shape of the mandrel 3, there is a shell 8 of the package. Figure 2 shows a substantially rectangular cross section of the packaging shell 8 with rounded corners 9. The packaging shell 8 is still open at both ends thereof. Alternatively, in this way, depending on the shape of the mandrel 3, for example, a round or oval cross section can be obtained.

Figure 3 shows that the previously open end of the packaging shell 8 is folded into a strong packaging bottom 18 with packaging ears 19. For this, the open end is first sealed with a bottom seam, and thereafter the packaging ears 19 arising from folding are secured to the bottom of the package 18. In particular, advantageously, if the packaging ears 19 are pressed against the bottom of the package 18 and fixed thereon, that the bottom surface forms a concave arch. In this case, when installed on the surface of the package from a cardboard / polymer composite for support, only four outer ribs of the bottom 18 of the package are obtained, which leads to a particularly stable position. In Fig.3 pos.15 - protruding pulling tongue (all not shown).

The envelope collar 10 is located on the upper end 11 of the packaging shell 8, while the collar 10 is located on the frame 21 connected to the upper region of the packaging shell 8, as explained below. The frame 21 in the shown exemplary embodiments has the same reference numbers, although it may vary, respectively, in design and material.

In the exemplary embodiment shown in FIG. 4, a collar 10 is formed on a frame 21 connected to the upper region of the packaging shell 8. To this end, the frame 21 is provided with an L-shaped profile and secured to the packaging shell 8 by bending the edge of the upper end 11. In this embodiment, the lid is placed only at the next step, not shown, and again a one-sided open container 13 is obtained.

In order to fix the frame 21 shown in FIG. 5, in contrast to the embodiment shown earlier, it is only necessary to fix the frame 21 on the upper end 11 of the packaging shell 8. The laborious bending of the upper end 11 may disappear, which greatly simplifies manufacturing. The fastening of the cover 14 on the shoulder 10 can be made before or after fixing the frame 21 on the upper end 11 of the shell 8 of the package.

A particularly stable form of execution of the frame 21 is shown in Fig.6. In particular, due to the persistent protrusion 22 of the frame 21, it is possible to particularly position the frame 21, since the depth of fit of the frame 21 in the upper end 11 of the packaging shell 8 is limited by the persistent protrusion 22.

Once the cover 14 has been removed, in particular if it has not been re-closed, it may be preferable to provide an additional protective cover 24. For the protective cover 24 described below, the same reference numbers are used. In particular, the shaping, as well as the material used for the manufacture of the protective cover 24, can be performed accordingly by others.

Fig.7 shows a top view of a special form of execution of the frame 21. The frame 21 has elements for locking the protective cover 24, shown in Fig.9. In this case, we are talking about four samples 23 located along the perimeter and depicted by dashed lines, which naturally can be made with other designated sizes.

On Fig presents how the frame 21 is fixed on the upper region of the shell 8 of the package. This embodiment is particularly compact, so that several packages of the cardboard / polymer composite can be placed next to each other especially tightly and saving space. In the samples 23, as shown in Fig. 9, it is possible to engage and lock the protective cover 24. For this, the protective cover 24 has four bosses 25 used to engage in four samples 23 of the frame 21 and to lock the protective cover 24 on the frame 21. Thus and after removing the cover 14, previously mounted on the shoulder 10, it is possible to re-close the packaging of the composite "cardboard / polymer".

The next embodiment of the frame 21 with an element for locking the protective cover 24 is shown in FIGS. 10 and 11. The frame 21 has an envelope protrusion 26, which serves to lock the corresponding structurally designed protective cover 24. From figure 11 it is clear that the protrusion 26 extends beyond the outer diameter of the shell 8 packs.

As shown in FIG. 12, the frame 21 may also have several perimeter protrusions 26 for locking the protective cover 24. Thus, in a simple manner, the material necessary for the manufacture of the frame 21 can be reduced and, therefore, costs can be reduced.

The present invention, however, is not limited to the above examples. Various cross-sectional shapes can be provided, for example, for both ends of a cardboard / polymer composite package. So, the bottom of the package can be made essentially rectangular, the area of the frame, essentially circular. The packaging shell in this case passes from a rectangular to a circular cross-section, and the welded lid adapts to a circular cross-section.

Claims (21)

1. Packaging made of a cardboard / polymer composite, comprising a shell (8) with a longitudinal seam (6) and a folded and welded bottom (18) provided at one end (16) of the shell (8), characterized in that at the upper end (11) of the shell (8), an envelope collar (10) is located on which the cover (14) is removably fixed and the collar (10) is located on the frame (21) connected to the upper region of the shell (8). 2. Packaging according to claim 1, characterized in that the shell (8) is made of a rectangular cut-out blank (1). 3. Packaging according to claims 1 or 2, characterized in that the lid (14) is made of film (foil). 4. Packaging according to claims 1 or 2, characterized in that the lid (14) is made of composite material “cardboard / polymer”. 5. Packaging according to claims 1 or 2, characterized in that the lid (14) is welded onto the shoulder (10). 6. Packaging according to claims 1 or 2, characterized in that the lid (14) is glued to the shoulder (10). 7. Packaging according to claims 1 or 2, characterized in that the lid (14) is heat-sealed to the flange (10). 8. Packaging according to claims 1 or 2, characterized in that the lid (14) is rotatable. 9. Packaging according to claims 1 or 2, characterized in that the bottom (18) is rectangular. 10. Packaging according to claims 1 or 2, characterized in that the cross section of the shell (8) is made essentially round. 11. Packaging according to claims 1 or 2, characterized in that the cross section of the shell (8) is made essentially oval. 12. Packaging according to claims 1 or 2, characterized in that the cross section of the packaging shell (8) is made essentially rectangular with rounded corners (9). 13. Packaging according to claims 1 or 2, characterized in that a protective cover (24) is provided, made with the possibility of re-closing. 14. Packaging according to item 13, wherein the protective cover (24) is made in the form of a cuff cover. 15. The package according to item 13, wherein the frame (21) contains at least one element for locking the protective cover (24). 16. Packaging according to claim 15, characterized in that the frame (21) comprises at least one perimeter-mounted sample (23) for locking the protective cover (24). 17. Packaging according to clause 16, characterized in that the frame (21) has at least one protrusion (26) located around the perimeter to lock the protective cover (24). 18. The method of obtaining packaging from a composite "cardboard / polymer" according to one of claims 1 to 17, characterized in that it contains the following steps:
obtaining cut blanks (1) from the web of composite material,
heat sealing the two edges (4, 5) of the cut-out blank (1) in one longitudinal seam (6), so that the sheath (8) of the package appears,
the frame (21) and the envelope flange (10) on the packaging shell (8),
obtaining a one-sided open container (13) by applying a lid (14) to the shoulder (10),
sterilization of a one-sided open container (13) through the bottom opening,
if necessary, rotation of a one-sided open container (13),
filling from the bottom with a product of a one-sided open container (13) and
folding and welding the bottom of the container to the strong bottom (18) of the package. 19. The method of obtaining packaging from a composite "cardboard / polymer" according to one of claims 1 to 17, characterized in that it contains the following steps:
obtaining cut blanks (1) from the web of composite material,
heat sealing the two edges (4, 5) of the cut-out blank (1) in one longitudinal seam (6), so that the sheath (8) of the package appears,
obtaining a one-sided open container (13) by folding and welding the bottom of the container to a strong bottom (18) of the package,
framing and execution of the envelope flange (10) on the packaging shell (8),
sterilization of a one-sided open container (13) through the upper end (11) of the packaging shell (8),
filling the product with a one-sided open container (13),
cap sterilization (14) and
applying cover (14) to collar (10). 20. The method according to one of claims 18 or 19, characterized in that the cut-out blank (1) is provided with big lines or fold lines (2) before the formation of the longitudinal seam. 21. The method according to one of claims 18 or 19, characterized in that the bottom (18) of the package is first sealed with a bottom seam and then the packaging ears (19) that arise when folding are pressed to the bottom (18) of the package and fixed on it, this bottom surface is formed by a concave arch.

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