GB2036692A

GB2036692A - Bag

Info

Publication number: GB2036692A
Application number: GB7929599A
Authority: GB
Original assignee: KIESER DRUCK VERLAG
Current assignee: KIESER DRUCK VERLAG
Priority date: 1978-11-24
Filing date: 1979-08-24
Publication date: 1980-07-02
Also published as: GB2036692B; FR2442193A1; SE7907069L; ES245553Y; FR2442193B1; ES245553U; DE7834984U1; IT7968860A0

Abstract

A photographic laboratory-work bag has a paper front wall 2, including a tear-off strip 5 along its upper edge, bonded to polyethylene foil rear wall 3 along its side and bottom edges so as to leave an opening 4. Simultaneously punched-out holes 8 and 9 are provided in the strip 5 and rear wall 3. A tab 7 is adhesively secured to the rear surface of the wall 3 so as to expose an adhesive region in the hole 9. The rear of the tab 7 is coated with adhesive repellant material. In use, the opening 4 is easily closed temporarily after removal of the tear-off strip 5 by folding the upper region of the rear wall 3 forwardly over the front wall 2 so that the adhesive exposed in the hole 9 engages the front surface of the front wall 2. The adhesive is of the easily peeled-off type. <IMAGE>

Description

SPECIFICATION Bag This invention relates to a bag with front and rear walls, an opening and a tear-off strip.

Such bags can be used, for example in the form of paper envelopes, for photographic laboratory work.

The tear-off strip may be in one or two pieces and serves as a control counterfoil or receipt voucher.

After the appropriate data has been entered on the tear-off strip, the latter is removed from the bag. The film is then placed into the open bag which is folded over along the open edge thereof and temporarily closed, e.g. by turning down the corners so that the films cannot straight away slip out of the bag. At the laboratory, the bag is unfolded and the film removed; later on the finished pictures are placed in the bag, the opening is closed once more by folding, and the bag is returned to the reception counter.

The present invention sets out to provide a bag of the kind specified which can be closed without having to fold over its edge and turn down its corners and which can be repeatedly fastened and opened. The bag is specifically designed for use as a laboratory work bag for photographic articles.

According to this invention, there is provided a bag having front and rear walls, an opening and a tear-off strip wherein one of the walls has an adhesive-coated region on a surface thereof which faces the other wall, and said other wall has a cut-out in that part thereof which corresponds to said adhesive-coated region.

An embodiment of a bag according to the present invention will now be described, by way of example, with reference to the accompanying drawings, in which: Figure 1 is a perspective view of the front of the bag showing it in an open condition with a tear-off strip partially severed; Figure 2 is a perspective view of the bag of Figure 1, showing it in a closed condition with the tear-off strip completely severed; and Figure 3 is a rear view of the open bag shown in Figure 1.

Referring now to the drawings, the bag 1 comprises a front wall 2 made from a suitably stout, 100 to 1 50g- quality paper, and a rear wall 3 made from a thin transparent polyethylene foil, and an opening 4.

The paper and the polyethylene foil are welded together and sealed along the two longitudinal side edges 13, 14 and along the bottom edge 15 of the bag 1. To this end, the paper forming the wall 2 may be coated with polyethylene.

The data usually required in photographic laboratory work bags can be written on the paper front wall 2. Furthermore, a tear-off strip 5 which can be severed along perforations is provided at the upper edge of the front wall 2. In the region of this strip 5, the front and rear walls 2 and 3 of the bag 1 are not welded together, however, the thin polyethylene foil clings, in a detachably adherent manner, to the tear-off strip 5. It will be seen from Figure 1 that the length of the rear wall 3 is equal to the length of the front wall 2 inciuding the tear-off strip 5.

As best shown in Figure 1, there are two coincident holes or cut-outs 8 and 9 punched in one operation, in the tear-off strip 5 and the rear wall 3, respectively. On the surface 10 of the rear wall 3 which is directed away from the front wall 2, i.e. on the rear surface of the wall 3, there is provided a tab 11 which overlaps and covers the cut-out 9. The tab 11 is provided with an easy peel-off adhesive only on its side which faces the cut-out 9, its other side being coated with an adhesive repellent (e.g. silicone) coating. A bag of this kind is made by first welding together or sealing the front and rear walls 2 and 3 along the side edges 13, 14 up to the level of the tear-off strip 5 and along the bottom edge 15, then punching the holes 8 and 9 and finally sticking the tab 11 over the hole 9 on the outside of the wall 3.

Thus, the above-described bag is easily closed, after severing the tear-off strip 5, by folding the surplus length offoil forwardly and over the front wall 2 and sticking it onto the front wall 2 in an easily detachable manner by means of the adhesive-coated region 7.

The above-described arrangement has the advantage that the punching of the hole 8 in the tear-off strip 5 will prevent the region 7 from sticking thereto as well as from sticking to other, adjacent bags in a stacked pile of bags. In this latter respect, sticking together of adjacent bags in a stacked pile is prevented because of the spacing effect provided by the thickness of strip 5 because of the provision of the anti-stick coating on said other side of each tab 11.

In another embodiment of the invention (not shown), only the tear-off strip is provided with a cut-out therein. In this case a tab, which is adhesivecoated on both sides thereof, is provided on the front surface of the rear wall facing the tear-off strip. The adhesive applied to the side of the tab which faces the rear wall is a permanent adhesive whereas the adhesive applied to the side of the tab which faces the tear-off strip is of the easy-peel, re-stickable type.

The rear surface of the rear wall is made adhesive repellent by suitably coating or printing at least that region of the rear surface which corresponds to the tab region. This arrangement will secure the same advantages as in the previously described embodiment but production is slightly more complicated.

In a third embodiment (also not shown), instead of using a double-sided adhesive-coated tab which was provided in the previous embodiment, an easy-peeloff adhesive is simply applied over the region 7 to the side 6 of the rear wall which faces the tear-off strip The rear surface 10 of the rear wall 3 is provided, at least in the region which corresponds to region 7, with a printed or otherwise applied suitable adhesive-repellant coating. The same advantages accrue as in the first described embodiment but again production is more complicated.

In the above-described embodiments, the tear-off strip is provided on the front wall of the bag and the adhesive-coated area on the rear wall. However, this positioning of the tear-off strip is not essential and, in other embodiments of the invention, the rear wall may take the place of the above-described front wall and vice versa. Also, the bag itself, instead of being made up by sealing or welding together the front and rear walls along the side edges 13 and 14 and the bottom edge 15, may be formed by stitching the walls together along the said three edges.

Claims

1. A bag having front and rearwalls, an opening and a tear-off strip, wherein one of the walls has an adhesive-coated region exposed on a surface thereof which faces the other wall, and said other wall has a cut-out in that part thereof which corresponds to said adhesive-coated region.

2. A bag according to claim 1, wherein the cut-out is provided in the tear-off strip.

3. A bag according to claim 1 or 2, wherein said one of the walls is provided with a cut-outwhich coincides substantially with the cut-out in said other wall, and an adhesive-coated tab on a surface thereof which is directed away from said one of the walls defines said adhesive-coated region.

4. A bag according to claim 3, wherein said tab is adhesive coated on the side thereof which faces said one of the walls whilst its opposite side is adhesiverepellant.

5. A bag according to any of claims 1 to 4, wherein the wall which includes the tear-off strip is made of a stout material whilst the other wall is made of an elastic material.

6. A bag according to claim 5, wherein the elastic wall is formed of a transparent foil material.

7. A bag as claimed in claim 1, substantially as hereinbefore described.

8. A bag substantially as hereinbefore described with reference to the accompanying drawings.