DE2240645A1 - CONTAINERS, IN PARTICULAR PLASTIC BAGS - Google Patents

Description

Containers, in particular plastic bags

The invention relates to containers made of thin plastic film with arrangements of contact adhesive for closing the container.

Heretofore, contact adhesives have been used to seal envelopes, bags and similar containers because they have the advantage that they only stick when they come into contact with each other and thus the envelopes with them, "bags." o.a. can be stacked or rolled up on top of one another without the risk of them sticking together, if

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just don't touch the contact adhesives.

So far, contact adhesives have been arranged so that a limited sealing effect in one or a very small limited number of predetermined and sealing areas was achieved, and you needed relatively wide strips and thus also more contact adhesive to ensure that there is any deviation in the ' Closure layer to achieve a seal.

It is therefore the object of the invention to provide a contact adhesive distribution propose that with the least amount of effort

Glue can be produced quickly and easily and in a wide variety of ways Locking layers is effective.

According to the invention, this is essentially achieved in that, in the case of a container, a container is connected to its rear side flaps foldable on the front face a number of spaced apart from the front face is applied continuously to the flap, narrow strips of contact adhesive.

Such an arrangement is particularly useful, for example, for containers made of plastic films, in particular bags in which the housewife packs food and which can therefore be shipped very quickly and easily.

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are close so that there is a compact package.

Different types of contact adhesives can be used pigment and dye and the resulting stripes can also be used as decoration on the foil bags serve, which at the same time indicates the closure area and thus facilitates opening.

The strips preferably run parallel to one another and, for example, at an angle of 45 ° to the side edge of the container, whereby a large number of points of contact or intersection of the Strips of contact adhesive are produced.

The invention is described below with reference to the exemplary embodiments showing figures explained in more detail.

Fig. 1 shows a plan view of a container with a contact adhesive distribution according to the invention.

Fig. 2 shows a closed container in a plan view.

FIG. 3 shows a section along the line 3-3 from FIG.

Fig. Ί shows.a plan view of a container in a Closed position, which differs from that according to FIG.

Fig. 5 shows a section along the line 5-5 from Fig. K

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Pig * 6 shows a different contact adhesive method on a smaller scale division on a container.

7 shows a further exemplary embodiment of a contact adhesive distribution on a container;

FIG. B shows a closed container comprising a large volume.

Pig * 9 shows the in a similar representation as Fig * 8 closed container comprising a smaller volume.

FIG. 10 shows the same representation as FIGS. 8 and 9 closed container comprising an even smaller volume.

In the figures, the same reference symbols denote corresponding parts in different representations. A bag 20 made of thin plastic film has a front side 22 and a rear side 2 ¹ I, to which a flap 26 is connected in one piece as an extension. The front side 22 and the rear side 2 ¹ I are continuously connected to one another along the side edges 28 and 30 and the bottom edge 32, preferably heat-sealed.

According to the invention is on the upper part of the front 22 and continuing on the flap 26 a series of narrow, parallel stripes at a distance from one another

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a contact adhesive printed on or in some other way .. upset. These contact adhesive strips can by means of Rolls or similar devices are applied to the bag 20 while being produced continuously will. The distribution of the adhesive is such that the strips 34,36,38,40,42,44 and 46 each at an angle of with respect to the side edge 28 and the upper edge 48 of the front side 22 forming the bag opening.

If the flap 26 is folded over along the upper edge 48, as this is shown in Figures 2 and 3, so superimpose and strips of adhesive cut from the flap 26 with those from the front 22, creating points of contact 50 · By using a larger or smaller one Number of strips more or less points of contact are formed when the flap 26 is used to close the Bag is folded over.

If there is less content in the bag 20, as shown in FIG is indicated in FIGS. 4 and 5, the flap 26 and even part of the front 22 and rear 24 can be folded over, about the imaginary line 52 in FIG 1. Other points of contact 54 are generated that are sufficient to form a very good closure without having to ostracize a special fold.

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- ρ -

If the bag is filled with a larger amount, it can be closed in a different position, for example by folding over along the imaginary line 56, with a sufficient number of points of contact to ensure a good lock is formed.

The arrangement of the strips at * »5 ° is very convenient from the standpoint of manufacture and use, and the adhesive strips give a special decoration if it is colored and the plastic film is transparent. The distribution can be changed, however, bo that diagonal stripes and. Angles arise that differ from 45 °. Thus, in the bag 70 of Figure 6 on the front side 72 and the flap 7 ¹ * A number of parallel extending spaced horizontal strips 76 and vertical strips 78 are provided, which overlap each other when the flap Th is folded over onto the front 72nd

In the embodiment according to FIGS. 7 and 10, the bag corresponds to the bag 20 apart from a few differences ^; Bag 20 of Figure 1. Fold lines 80 and 82 are printed on the bag and the points of contact are reinforced by the application of special shapes of the contact adhesive in alignment with the strips. Will the bag along the

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tinie 80 folded ·. (Figure 8), so come the enlarged ones Areas in the form of circles 81} to support and form, adhesive points of contact 86., - '. . .

If the bag is pushed along its upper edge 52..ge- ...., formed opening folded (Figure 9) so come the enlarged eil areas ^ ii ^^^ rectangles 88 in contact with each other and stick to the touch points 88.

When folding the bag along line 82 (Figure 10) become the enlarged. Areas in the shape of triangles 92. brought into engagement and bond adhesive at the contact points 9 * 1. .

Each of the ¹ enlarged areas in the form of circles, rectangles or triangles or other selected shapes can be printed in the same color as the stripes or in a different color and can cover other areas or parts of these or coincide with you, whereby then. a "special decorative effect results and at the same time an: improved closure is achieved without more. Contact adhesive would be required. Obviously, in this exemplary embodiment, the best closures result when folding along the predetermined folding lines.

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It should be noted, however, that the bag can be formed by folding along any infinite number of fold lines can be closed.

The chosen distributions can take the form of decorative or pictorial representations that together produce surprising effects. For example, the cooperating Distributions on the flap in the shape of an animal's head and on the front in the shape of an animal's body.

The invention also includes modifications and changes, and it is possible to use certain features without other features.

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Claims (8)

i.Wüllbaren container, in particular 'bag made of' plastic ^r "film with a front and a back that merges in one piece into a flap that can be folded over the front," characterized by a large number of spaced apart "" stands on the Front ⁵ and * continuously on the flap "extending narrower Strips of contact adhesive * ^-; '' ■■■ '-'"- ■■ '■■■■"' ■ '' ^{i ; <} '. · ·· '-' 2. Container according to claim ii, characterized in that the ^: strips perpendicular'zu ^! run towards each other »"■:>·.,> - 3 * Container according to claim 1 with a rectangular front, characterized in that the strips run at K $ ° to the side edge of the front * ¹ I * container according to claim 1, characterized in that a number of strips run parallel to the side edge of the front side and that another number of strips are arranged parallel to one another and perpendicular to the side edge. 5. Container according to one of the preceding claims with a A multiplicity of preformed peeling lines, characterized in that j that the strips on the flap and the front one Have a multiplicity of enlargements which, when the flap is folded around one of the preformed folding lines, enlarge adhesive areas form" . 6. Container according to claim 5> characterized in that the strips run parallel to each other and under H5 opposite the fold lines. 7. Container according to claim 5 or 6, characterized by three spaced apart, pre-formed fold lines and through three differently shaped enlargements. 8. Container according to one of the preceding claims made of transparent Material, characterized in that the strips are colored. 10/0198 Blank page