DE9109154U1 - Portable packaging bag with removal opening prepared by weakening lines - Google Patents

Description

Portable packaging bag with removal opening prepared by weakening lines

The invention relates to a portable packaging bag made of flexible plastic film for packaging pressed and under expansion pressure cellulose-containing hygiene articles, such as diaper pants, with the following features:

- the packaging bag has a nearly cuboid shape when filled

- with an approximately rectangular front and rear surface part ,

- with two opposite narrow surfaces, which separate the front and rear surface parts laterally,

- and with a cover part that connects them in the head area ,

- with a handle whose ends are in the head area of the

packing bag along the upper edges of the surface parts,

- and with a line of weakness which is substantially perpendicular to the direction of the expansion pressure and

which serves to form a removal opening. 25

A portable packaging bag of the aforementioned type is known from EP-A2-349 050. In the known bag, the tear lines are located in one of the narrow surfaces. By tearing open a weakened area

The inside of the packaging bag becomes accessible through the tear tab marked with a line, whereby the considerable expansion pressure pushes the hygiene products mentioned out of the opening.

^ It is known that the arrangement of the line of weakness is of great importance, since despite the presence of the lines of weakness, it must be ensured that

that the expansion pressure does not open the perforation or weakening line. It must therefore be prevented that the pack can burst along the perforation line if the filled bags are stressed by clumsy handling, for example when pulling them out of a stack or by being dropped.

The task is therefore to develop a packaging 10

bag with a removal opening prepared by a line of weakness of the type mentioned above, which has a greater strength than the bag according to the state of the art, without causing any problems during handling and opening

of the bag an adverse effect is observed. 15

This task is solved by a portable packaging bag of the type mentioned above, in which the the line of weakness starts in the upper area of one of the surface parts (front or rear surface part),

continues over the cover part and ends in the area of the surface part opposite the aforementioned surface part, while maintaining a distance from the closer narrow side.

The embodiment according to the invention has the advantage that the lid part and the handle, which usually have a doubling of the film thickness, are included in the opening. The weakening line also runs more towards the inside of the bag. This has the

Another advantage is that the narrow side of the bag stays connected to the rest of the bag, thus reliably preventing the hygiene products from falling out when the bag is torn open. They can be grasped from above and pulled out upwards.

The terms "top", "bottom", "front" and "rear" used in this description refer to a

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filled, flexible packaging bag, as used in the

Figure 1 and are only intended to explain the individual terms. They do not contain any restrictions on the configuration and can therefore be used for other configurations.

management forms mutatis mutandis.

The weakening line is preferably placed on the front surface part and ends at the same height on the rear surface part. However, it cannot be ruled out that

for example, only the front surface part and the cover part are provided with the weakening line, so that practically only one corner of the side can be folded down. It should also not be ruled out that, for example, in the attachment area in the front surface part, the distance

the weakening line on the side part is about twice as large as the end area on the opposite side, i.e. in the rear surface part. In this case, a slightly slanted opening is created. Usually, however, the weakening line is parallel to the

neighboring cuboid edges.

In order to create a sufficiently large opening, the weakening line begins above half the height of the surface part and preferably ends at the same height. 25

A particularly advantageous feature when using a bag of the type mentioned here is that a gripping tongue can be punched out of the material of the handle ends in the transition area between the front surface part and the handle end.

which is completely embedded in the material of the handle, so that there is a clear visual beginning of the tearing process, which does not weaken the packaging as such, since the tear tab is outside the packaging part subject to strong pressure

Preferably, such grip tongues are punched out in both opposite handle ends.

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As is known per se, the weakening line is preferably laid out as a double track so that a tear strip can be torn out between the two weakening lines.

The weakening lines or weakening strips should preferably be spaced at least

twice the thickness of the packaged hygiene article; 10

Preferably, the distance is approximately between the fourth and eighth layers. Further subclaims are explained in the following description.

The description is based on the drawing, whose 15

Figures show in detail:

Figure 1 shows a first embodiment of a packaging bag with a handle sealed on the outside;

Figure 2 shows a packaging bag according to Figure 1, but

partially torn,

Figures 3 a/b show an embodiment for a tubular bag;

Figures 4 a/b an embodiment similar to Figure 3,

but only with a single line of weakness;

Figures 5a - 5e different embodiments of

Weakening or perforation lines.

Figure 1 shows a portable, filled packaging bag 1 made of plastic film. Filled with pressed and expanded cellulose-containing hygiene articles 100, the packaging bag assumes a cuboid shape when filled, whereby this shape

through bulges, curves and the like, a more or less pronounced pillow shape can be obtained

which is essentially determined by its content 5

is.

The bag 1 has a rectangular front and rear surface part 10 and 9, respectively, which are connected to one another by narrow surfaces 40, 41. The narrow surfaces

40, 41 are vertical seams 20, 21, which are made by heat sealing or other known types of connection. Furthermore, the parts 9, 10,741 ₍ are connected in one piece by a folding cover part 4 at the upper head area

connected to each other. At the lower, initially open inlet 15

After filling 34, the bag 1 is closed by a transverse adhesive or weld seam 35, as is known per se.

The folding cover part 4 is provided with raised edges 7, 8

and forms a depression 4 ¹ which is lower by a small part of the total height of the packaging bag. A handle 2, which is designed as a U-shaped bracket, extends over the folded lid part 4. It has handle recesses 13. The handle 2 runs according to its cutouts.

ten 18 in handle ends 22, 23 and is in the area of the upper edges 7, 8, which are each formed between a surface part 9, 10 up to the seams 20, 21 of the narrow surfaces 40, 41 and the inwardly folded lid part 4, by means of sealing seams 11, 12 on the outside

welded.

In the present case, the handle 2 consists of two identical handle parts 14, 15, which are formed in one piece to form a bracket or are joined together along a heat-sealed seam 16

can be connected to each other.

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A manufacturing process for such a bag is known from patent specification 36 29 563.

The present packaging bag 1 differs 5

of those of the prior art by tear strips 24, 25, 25' which are contoured and formed by a double track of two perforated weakening lines 30, 31. The weakening lines 30, 31 start with a

Transverse line of weakness 32 above the upper half of the 10

packaging bag 1 and are spaced from the cuboid edge 29 by approximately five layers of hygiene articles packed in the bag. The tear strip 25 extends into the area of the

Handle end 2£. There it forms a handle tongue 26. 15

Furthermore, again parallel to the edge 8, the further tear strip 24 lies within the folded cover part 4. On the opposite side, i.e. in the rear surface part 9, a similar configuration with a tear strip 25' and a gripping tongue 26' is formed.

det. The width of the tear strip is between 10 and 30 mm. It is also important that a cross perforation 27, 27' is present to initiate the tearing movement across the folded cover part, which creates a distance to the adjacent cuboid side, in this case to

the edges 8 and 7 of about 10 - 40 mm. However, it cannot be ruled out that a cross perforation is also arranged directly in the transition area between the folded cover part and the edge.

As can be seen, the weakening lines 30, 31 are perpendicular to the direction of the expansion pressure and serve to form a removal opening, as will be shown in the following embodiments. The weakening lines 30, 31, which in the above-mentioned embodiment form a tear strip, begin in the upper area of one of the surface parts 9, 10, continue over the folded cover part 4 and end in the area of the

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to the aforementioned surface part 10 opposite surface part 9. In the present embodiment, in the transition area between the front surface part

10 and handle end 22 made of the material of the handle 2 a 5

Gripping tongue 26, 26' is punched out, with which the tearing process can be initiated.

Figure 2 shows the bag according to Figure 1, in which the tear strips 25 are connected to the protruding

The gripping tongue 26, which has already been punched out, has been grasped and torn downwards from there. When the strip 25 is torn off, a lateral area is first exposed, as shown in Figure 2. By further tearing at the sides and

In the handle and lid area, the contents can then be easily removed via the fold-out narrow surface 40.

Figure 3a and b show an embodiment in which a

tubular bag packaging. Here too, it is possible to create a tear strip 24 by means of corresponding weakening lines 30, 31, 32, with which the package can be torn open. Here, the tear strips 24, 25, 25' extend across the

Parts of the original tubular bag that function as the fold cover part 4. The hygiene articles 100 that appear after the tear strips 24, 25, 25' have been torn open can be seen in Figure 3b.

It should be noted that in the double track between the two weakening lines 31 and 32 in the transition area between the front surface part and the handle ends, the distance can also widen, so that a cup-like configuration is created in which a handle

tab (not shown).

Figure 4 finally shows another embodiment,

in which a tearing mode can only be generated with the help of a single weakening line 30. For example, with the help of a firm, outward-facing handle that

at the lid fold end 39, the bag can be opened-5

tear, as shown in Figure 4a. In this case, an area of the narrow surface 40 can be folded downwards, as can be seen in Figure 4b.

The material suitable for the packaging bag is one-10

or multi-layer PE film, also in laminated form. However, it cannot be ruled out that appropriately reinforced paper types could be used as manufacturing materials.

The term "weakening lines" refers, as is well known, to both perforations and thinnings of material introduced by rolling, which serve as weakening lines. For examples of such perforations or thinnings, see Figure 5.

Figure 5a shows individual, offset, obliquely positioned punches 48 which are in parallel alignment, while Figure 5b shows such punches 48 in an angular arrangement. Figures 5c and 5d show single and double punches 49 and 50 respectively, while Figure 5e

shows punched holes 51 in the form of rafters. These and other perforation forms ensure that even with increased pressure, the packages do not accidentally tear open at the weakening lines.

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Claims (13)

-Al-claims: 1. Portable packaging bag (1) made of flexible plastic film for packaging pressed and under expansion pressure cellulose-containing hygiene articles (100), such as diaper pants, with the following features: - the packaging bag (1) has a nearly cuboid shape when filled - with an approximately rectangular front and rear surface part (10 and 9 respectively), - with two opposite narrow surfaces (40, 41) which separate the front and rear surface parts laterally, - and with a cover part (4) that connects them in the head area, - with a handle (2), the ends (22, 23) of which are attached in the head area of the packaging bag (1) along the upper edges (7, 8) of the surface parts, - and with a weakening line (30; 31) which is substantially perpendicular to the direction of the expansion pressure and which serves to form a removal opening,
characterized in that
the weakening line (30; 31) starts in the upper region of one of the surface parts (front or rear surface part 10 or 9), continues over the cover part (4) and ends in the region of the surface part opposite the aforementioned surface part and thereby maintains a distance from the closer narrow surface (40). 2. Packaging bag according to claim 1, characterized in that the weakening line (30; 31) is parallel to the cuboid edges (29) between the front surface part - A2 - and side part or side part or cover part. 3. Packaging bag according to claim 1 or 2, characterized in that the weakening line (30; 31) starts above half the height of the surface parts (9 or 10). 4. Packaging bag according to one of claims 1 to 3, characterized in that the weakening line (30; 31) begins or ends at essentially the same height at the front and rear surface parts (10; 9) and runs vertically in the front and rear surface parts (10; 9). 5. Packaging bag according to claim 1 or 2, characterized in that in the transition area between the front surface part (10) and the handle end (22) a gripping tongue (26) is punched out of the material of one of the handle ends (22), with which the tearing process can be initiated. 6. Packaging bag according to claim 5, characterized in that gripping tongues (26, 26') are punched out in both opposite handle ends (22). 7. Packaging bag according to one of claims 1 to 6, characterized in that the weakening lines (30; 31) are designed as a double track, so that a tear strip (25; 24; 25';24') can be torn out between the weakening lines (30; 31). 8. Packaging bag according to one of the preceding claims 1 to 7, characterized in that the weakening line or the tear strip has a distance of at least twice the thickness of the Q1 - A3 - packed hygiene article (100) from the closer narrow surface. 9. Packaging bag according to one of the preceding claims 7 or 8, characterized in that the width of the double track of the weakening lines (30; 31) is between 10 and 30 mm. 10. Packaging bag according to one of claims 7 to 9, 10 characterized in that the distance between the weakening lines (30; 31) in the double track to the transition area between the front surface part and the handle ends widens in a cup-like manner in the surface part. 11. Packaging bag according to one of the preceding claims 1 to 10, characterized in that the weakening lines (30; 31) are designed as perforations. 20 12. Packaging bag according to claim 11, characterized in that the perforation consists of individual, mutually offset, oblique or rafter-shaped punchings (48; 49; 50; 51). 25 13. Packaging bag according to at least one of the preceding claims 9 to 12, characterized in that the tear strip in the area of the lid, preferably at a distance of 10 - 40 mm from the adjacent cuboid edge, has a transverse perforation (27, 27') owns. 35 1 09 154.