Bakery bag with viewing window

Abstract

Bakery bag (10, 10.4) - with a front wall (20, 20.4) and a rear wall (22), which are connected to each other on both sides by a side fold (24, 26, 26.4), - with at least one viewing window (40, 40.4) provided in the front wall (20, 20.4) and / or the rear wall (22), - characterized in that - the viewing window (40, 40.4) is backed with a paper film made of glassine treated with SiO2.

Description

TECHNICAL FIELD

[0001] The invention relates to a bakery bag with a viewing window. Bakery bags are used, for example, in bakeries for packaging baked goods. Bakery bags are also used in self-service areas, such as supermarkets and discount stores. Here, bakery bags with a viewing window are generally used to allow checkout staff to visually inspect the baked goods packaged by customers themselves. STATE OF THE ART

[0002] Bakery bags with and without a viewing window are common. Typically, a bakery bag is a folded paper bag. These bags have a side fold on both sides, allowing the bag to expand and provide sufficient space for the baked goods. In self-service areas, bakery bags with a viewing window are typically used to allow staff to see inside, thus reducing theft.

[0003] Bakery bags with a viewing window are a mass product that is consumed in very large quantities every year. Typically, these bakery bags are used only once and then disposed of. The bakery bag is usually made of cellulose paper, while the viewing window is made of plastic. To dispose of the bakery bag, the viewing window should first be separated from the paper material. The viewing window can then be disposed of with the residual waste, and the paper material with the recycled paper. However, very few people actually do this because it is impractical and time-consuming. Therefore, the bakery bag, including the viewing window, is usually disposed of with the residual waste.

[0004] DE 10 2021 001 369 A1 discloses a bakery bag with a viewing window, in which the viewing window is backed by a glassine film. Such a bakery bag can be disposed of with the waste paper without first removing the window film and disposing of it separately. However, the glassine has proven to be insufficiently transparent, making it difficult for cashiers to see the contents of the bakery bag. Typically, the viewing window must be manually smoothed to reliably identify the contents of the bakery bag. This involves additional labor. PRESENTATION OF THE INVENTION

[0005] Based on this prior art, the invention is based on the object of providing an improved bakery bag with a viewing window that reduces the consumption of fossil raw materials and has the lowest possible CO2 footprint.

[0006] The bakery bag with a viewing window according to the invention is defined by the features of main claim 1. Useful developments of the invention are the subject of further claims following this claim.

[0007] The bakery bag according to the invention has a front and a back wall, which are connected to each other on both sides by a side gusset. The front and / or back walls contain at least one viewing window, which is backed by a paper film made of SiO2-treated glassine.

[0008] Alternatively, the front and / or back panels can be made of SiO2-treated glassine. In this case, a viewing window is not required.

[0009] Glassine is a transparent paper made from finely ground and bleached pulp that can be disposed of with waste paper. It is largely greaseproof and is already occasionally used in the food industry for packaging sweets. Glassine treated with SiO2 has a transparency of over 90% and is commercially available, for example, from the company Nanopool under the name "Siopack." This allows for a visual inspection of the contents of the bakery bag without first having to smooth down the window film.

[0010] The bakery bag according to the invention can thus be disposed of with the waste paper without first having to remove the window film and dispose of it separately. This simplifies disposal for the end customer and can thus ensure that the bakery bag according to the invention is actually disposed of with the waste paper and does not end up in the residual waste. Even if the bakery bag should accidentally enter the environment, it can easily degrade (including in waterways) without releasing microplastics.

[0011] By using SiO2-treated glassine instead of plastic as the material for the window film or the front and / or back of the bakery bag, no petroleum or other fossil raw materials are required to produce the bakery bag. Instead, renewable raw materials can be used, thus conserving resources.

[0012] Such a bakery bag with a viewing window therefore has a significantly lower carbon footprint than existing bakery bags with a plastic viewing window. The bakery bag with a viewing window according to the invention therefore follows the guiding principle for environmentally friendly products: "Products also have a carbon footprint, which includes the total emissions generated by the production, use, recycling, and disposal of the respective product."

[0013] In a particularly preferred embodiment, the bakery bag can at least also contain recycled paper. By using recycled paper as a component of the paper material of the bakery bag, resource consumption can be further reduced. Especially with disposable and mass-produced products, even small savings in materials can make a significant contribution to the future of the earth. Replacing materials with more environmentally friendly materials can also contribute to this. The bakery bag according to the invention with a viewing window, which does not require any plastic, can take a further step in this direction. As an identification feature for the consumer, the bakery bag, or at least parts of it, can be marked with the "Blue Angel" environmental seal.

[0014] Preferably, the SiO2-treated glassine is made from unbleached pulp or recycled fibers. Unbleached pulp reduces light reflection and improves transparency.

[0015] In a particularly preferred embodiment, the paper film made of SiO2-treated glassine can have a grammage of about 25 - 30 g / m 2 This takes into account the requirements of the new European Packaging Regulation (PPWR), which reduces packaging materials to a necessary minimum.

[0016] Further advantages and features of the invention can be found in the features further specified in the claims and in the following exemplary embodiments. SHORT DESCRIPTION OF THE DRAWING

[0017] The invention is described and explained in more detail below with reference to the exemplary embodiments shown in the drawings. They show: Fig. 1 a front view of a first embodiment of the baker’s bag according to the invention, Fig. 2 a back view of the bakery bag according to Fig. 1, Fig. 3 a view of the slightly opened bakery bag according to Fig. 1 and Fig. 2, Fig. 4 a front view of a second embodiment of the baker’s bag according to the invention, Fig. 5 a back view of the bakery bag according to Fig. 4 and Fig. 6 a view of the slightly opened bakery bag according to Fig. 4 and Fig. 5. WAYS TO CARRY OUT THE INVENTION

[0018] The first embodiment of the baker’s bag 10 according to the invention is shown in the Fig. 1 to 3. The bakery cone 10 has a rectangular front wall 20 and a rectangular rear wall 22. The front wall 20 and the rear wall 22 are fastened to each other along their lateral edges on both sides via a respective side fold 24, 26. A closure flap 30 is attached to the upper edge of the rear wall 22 in one piece. A fastening flap 32 is attached to the lower edge of the front wall 20. The fastening flap 32 is folded back onto the rear wall 22 and thus forms the bottom of the bakery cone 10.

[0019] In the present example, the front wall 20, the back wall 22, the two side folds 24, 26, the closure flap 30 and the fastening flap 32 consist of a paper material that at least partially contains recycled paper.

[0020] A viewing window 40 is located in the front wall 20 of the bakery bag 10. The viewing window 40 is backed with a SiO2-treated glassine film, allowing the contents of the bakery bag 10 to be seen from the outside. In the present example, the viewing window 40 extends across the entire height of the front wall 20. Alternatively, it would also be possible to make the viewing window 40 smaller. It would also be possible to provide a viewing window 40 in each of the front wall 20 and the rear wall 22.

[0021] The second embodiment of the baker’s bag 10.4 according to the invention is shown in the Fig. 4 to 6. The bakery cone 10.4 has a rectangular front wall 20.4 and a rectangular rear wall 22. The front wall 20.4 and the rear wall 22 are fastened to each other along their lateral edges on both sides via a respective side fold 24, 26.4. A closure flap 30 is attached to the upper edge of the rear wall 22. A fastening flap 32 is attached to the lower edge of the front wall 20.4. The fastening flap 32 is folded back onto the rear wall 22 and thus forms the base of the bakery cone 10.4.

[0022] In the present example, the front wall 20.4, the back wall 22, the side fold 24, the closure flap 30 and the fastening flap 32 consist of a paper material that at least partially contains recycled paper.

[0023] In the front wall 20.4 and in the Fig.6 The side fold 26.4 of the bakery bag 10.4 shown on the left contains a viewing window 40.4. The viewing window 40.4 is backed with SiO2-treated glassine film, allowing the contents of the bakery bag 10.4 to be seen from the outside. The viewing window 40.4 is thus designed as a panoramic window that also extends over the side fold 26.4. Such a panoramic window significantly increases the visibility of the contents packed in the bakery bag 10.4, thus enabling particularly effective theft protection. Furthermore, a bakery bag with a panoramic window also looks visually appealing. QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] DE 10 2021 001 369 A1

[0004]

Claims

[1] Bakery bag (10, 10.4) - with a front wall (20, 20.4) and a rear wall (22), which are connected to each other on both sides by a side fold (24, 26, 26.4), - with at least one viewing window (40, 40.4) provided in the front wall (20, 20.4) and / or the rear wall (22), - characterized by , that - the viewing window (40, 40.4) is backed with a paper film made of glassine treated with SiO2. [2] Bakery bag according to claim 1, - characterized by , that - the front wall (20, 20.4) and / or the back wall (22) and / or the side folds (24, 26, 26.4) contain at least partially recycled paper. [3] Bakery bag - with a front wall and a back wall, which are connected to each other on both sides by a side fold, - characterized by , that - the front wall and / or the back wall consists of a paper film made of glassine treated with SiO2. [4] Bakery bag according to one of the preceding claims, - characterized by , that - the paper film is made of SiO2-treated glassine made from unbleached cellulose. [5] Bakery bag according to one of the preceding claims, - characterized by , that - the paper film made of glassine treated with SiO2 has a transparency of at least 90%. [6] Bakery bag according to one of the preceding claims, - characterized by , that - the paper foil made of SiO2-treated glassine has a grammage of 25 - 30 g / m 2 has. [7] Bakery bag according to one of the preceding claims, - characterized by , that - the paper foil made of SiO2-treated glassine has a grammage of 25 - 30 g / m 2and has a transparency of at least 90%. [8] Bakery bag according to claim 7, - characterized by , that - the paper film made from SiO2-treated glassine contains at least some recycled fibres. [9] Bakery bag according to one of the preceding claims, - characterized by , that - it has been awarded the “Blue Angel” environmental label.

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