EP2535295B1 - Bag for holding groceries containing a perforated seam - Google Patents

Description

The present invention relates to a bag according to the preamble of claim 1 for holding foods, in particular unbaked or baked baked goods, baked baked goods, pizza, pizza pancakes, pancakes, crepes, burgers, potato pancakes, sandwiches and the like, comprising a front side with an opening side Edge and a bottom edge and a first side edge and a second, opposite side edge and a back with an opening-side edge and a bottom edge and with a first side edge or a second, opposite side edge, the front and the back in the region of their bottom edges at least are directly or indirectly connected in sections and in the region of their respective adjoining first and / or second side edges at least partially directly or indirectly.

Bags for containing food are well known and are used in a variety of forms and for a variety of purposes. For example, the US 5,335,996 to take a packaging bag for hamburger or similar fast food products. Perforation lines are provided along and adjacent to the side edges from the opening end to the bottom end on the front side of this packaging bag, so that the front side can be completely torn open. With such bags, the packaged food product should be removed again without destruction.

From the JP 2003 335 348 A For example, a bag for food, for example rice, can be taken with a perforation seam running centrally on the front side from the opening end to the bottom end. Such a design is to allow easy opening of the bag, without falling out of the product present in the bag in the open state of this.

In the US 5,988,882 a sandwich bag is described, which is equipped with two parallel, extending from the opening end to the bottom end perforation on the front side of the bag. While the first perforation seam is adjacent to the side edge, the second perforation seam is spaced therefrom but still on the same longitudinal side pouch half of the pouch front. This perforation seams thus a relatively narrow bag strip is released. This construction should make it possible with the bag to hold the sandwich while eating can.

Finally, the reveals JP 2004 142 165 A a sandwich packaging with perforation lines on the back. Similar to the bag according to the US 5,335,996 the purpose of the perforation is to avoid damage or deformation of the packaged sandwich when unpacked.

US 3,570,751 A discloses a pouch made from a sheet of flexible pouch material having a tear seam extending on the surface or edge of said sheet. In this case, an endless web is provided for the production of such bags, wherein on the End-losbahn initially at least one line of weakness is attached, and subsequently sections of the continuous web are folded on each other. Subsequently, the bags produced are separated by means of Drehmessem.

The generic packaging bags for ready-to-eat foods still leave something to be desired, in particular with regard to their operating safety and reliable handling, as well as with regard to their production. By means of perforation seams weak points or predetermined breaking points are installed in a packaging bag. These perforation seams have to be sufficiently strong on the one hand so as not to break down immediately during the packaging process, and on the other hand to be sufficiently weak to reliably prevent the bag from being torn or ruptured at a location other than that intended although also after prolonged contact with a greasy, warm and / or moist food product.

The present invention therefore an object of the invention to provide packaging bags for particular ready-to-eat foods are available, which are not associated with the disadvantages of generic packaging bag described above and in particular a simple and nevertheless reliable tearing of the packaging bag ges tats, without affecting the packaged food, and with the torn-open pouches still being perfectly suitable as a napkin-like wrapper for holding the food product during ingestion. Furthermore, the present invention has the object to provide a packaging bag of the type described above in a simple manner, but without having to take losses in the described requirement profile losses.

This object is achieved by a bag having the features of claim 1. Advantageous embodiments can be found in the dependent claims. The bags according to the invention therefore each have at least one weakening line on the front and back, which are rectified and accordingly cooperate in such a manner that a section of the bag containing at least a portion of the front side and a section of the back side can be reliably and precisely demolished , As a rule, this succeeds particularly reliably when the lines of weakness on the front and rear sides extend over the entire length (from the bottom-side edge to the opening-side edge). Such a portion of the bag releasing the article therein, eg food, can also be removed by adding the attenuating lines from the front and back, for example, start together on the respective bottom edge and extend in the direction of the respective opening-side edges, without extending the lines of weakness to the opening side edge of the front and back. In this way, a reliable and easy tearing of the bag on, for example, bottom edge succeeds. Once the tear-off process has been started, in alternative embodiments, the bag section can then be torn off even in the areas which no longer have weakening lines. Of course, conversely, the weakening lines can also start at the respective opening-side edge of the front and back sides and interact in the manner described, without having to extend to the respective bottom-side edge of the front or rear side. Alternatively, it can also be provided that the weakening line on the front or rear side extends from the bottom to the opening-side edge, while the hereby cooperating weakening line on the rear or front side extends from the bottom or opening-side edge in the direction of the opening edge. or bottom edge extends without reaching this, as described above. In a bag lie in the unfilled state front and back to each other. Rectrically rectified first and second lines of weakness of the front and back regularly cover a common or overlapping bag area or are arranged next to each other or are at least partially superimposed. If the respectively rectified weakening lines lie next to each other at least in sections, they preferably have an average distance of not more than 30 mm, preferably not more than 15 mm.

A line of weakness extending in the direction of the invention in the direction of an edge, be it the bottom-side or opening-side edge, is not completely carried out up to this edge, but ends previously spaced from this edge. In general, this weakening line preferably terminates at a distance of at least 50 mm, in particular at least 15 mm, and preferably at least 5 mm, from the respective edge of the front or back. Begins a line of weakness spaced from one Edge, the distance to this example is at least 50 mm, in particular at least 15 mm and preferably at least 5 mm.

A weakening line which extends from the bottom or opening-side edge of the front or rear side in the direction of the opening-side or bottom-side edge preferably has a longitudinal extent of at least a quarter, in particular at least one third and particularly preferably at least half of the longitudinal extent of Front or back side between the bottom and side edges. A line of weakness extending from the first or second side edge toward the second and first side edges of the front and / or rear side preferably has a length extension of at least one third, and more preferably at least half the width extension of front and / or back sides. or backside between the first and second margin.

In order to be rectified in the sense of the present invention, the first and second or the third and fourth or the fifth and sixth or the seventh and eighth lines of weakness do not necessarily have to be parallel and / or to cover one another. However, the parallel alignment is one of the preferred embodiments. Rectified lines of weakness can be e.g. also intersect one or more times, but can also be spaced from each other or run side by side on the front or back, without crossing, as long as the safe and reliable tearing of a bag section along both rectified lines of weakness takes place.

The lines of weakness or perforation seams can in principle be attached in any desired form on the front and / or rear side, as long as a purpose according to the invention, e.g. a bag section can be easily and reliably removed from the bag, is achieved. For example, the weakening lines or perforations may be wavy or have a zigzag pattern. The weakening lines or perforation seams are preferably arranged along a straight line.

The side edges of front and back are preferably substantially completely interconnected along their respective mutual abutment areas. In one embodiment, the bottom edges or ends of the front and back abut each other and are substantially completely interconnected or integrally merge into each other to form in this way the bag bottom. A weakening line or perforation seam in the sense of the present invention can be embodied in many ways. Such weakening lines and perforation seams and / or lines and their production are familiar to the expert. Weakening lines and perforation seams in the sense of the present invention are also those which are due to a partial weakening of the material, for example the use of thinner or weaker material in regions, without having successive perforations or punches. A line of weakness or perforation according to the present invention thus permits reliable tearing of a portion of the front and back of the bag along that seam. Weakening lines in the sense of the present invention can be very thin, but also relatively wide, for example in the form of a weakening bar, comprising, for example, a width of several millimeters. Of course, the width of a line of weakness on one and the same side and / or the width of rectified lines of weakness may also vary. A weakening line in the sense of the present invention, if present as a perforation seam for example, can also be interrupted once or several times.

In preferred embodiments, with regard to the attachment of the first and second weakening lines, it may be provided that the bag has at least one first or second weakening line, in particular perforated seam, at the front and rear side, which essentially extend from the bottom end of the front or rear side extend to the opening-side end of the front or rear side, or that the bag has front and rear respectively at least one first and second weakening line, in particular perforation, extending substantially from the bottom end of the front or back in the direction extend to the opening-side end of the front or rear side, or that the bag has front and back respectively at least one first and second weakening line, in particular perforation, extending substantially from the opening end of the front or back in the direction on the bottom end of Front or back cover, or that the bag front has at least one first line of weakness, in particular perforation, which extends substantially from the opening side end of the front towards the bottom end of the back and that the back at least one second line of weakness, in particular perforation seam, which extends substantially from the bottom end in the direction of the opening-side end, or in that the bag on the front side has at least one first weakening line, in particular perforation seam, extending extending substantially from the bottom end towards the opening end, and that the back has at least one second line of weakness, in particular perforation, extending substantially from the opening end toward the bottom end, or that the bag and on the rear side at least one first or second weakening line, in particular perforation seam, which extend substantially at a distance from the opening-side end of the front or rear side toward the bottom end of the front or rear side, or in that the front side bag at least one first weakening line, in particular perforation seam, which extends from the opening end to the bottom end and that the back has at least one second weakening line, in particular perforation, spaced from the opening end in the direction of the extending bottom end, or that the bag front has at least one first line of weakness, in particular perforation, which extends at a distance from the opening end toward the bottom end, and that the back has at least one second line of weakness, in particular perforation, extending itself from the opening-side end to the bottom-side end, or that the bag has at least one first line of weakening, in particular perforation, extending from the opening-side end towards the bottom-side end, and the rear side has at least one second line of weakness extends at a distance from the opening-side end in the direction of the bottom end, or that the bag has at least one first line of weakening, in particular perforation, at the front, extending from the bottom end towards the opening side e end extends, and that the back has at least one second line of weakness, in particular perforation, which extends at a distance from the opening end toward the bottom end, or that the bag has at least one first line of weakness, in particular perforation, the front spaced from the opening end toward the bottom end, and that the back has at least one second line of weakness, in particular perforation, extending from the opening end toward the bottom end, or the bag has at least one first line of weakness at the front , in particular perforation seam, which extends at a distance from the opening-side end in the direction of the bottom-side end, and in that the rear side has at least one second weakening line, in particular perforation seam, extending from the bottom end i n direction toward the opening-side end extends.

Furthermore, in preferred embodiments, with regard to the attachment of the third and fourth weakening lines, it may be provided that the bag has at least one third or fourth weakening line, in particular perforated seam, at the front and rear sides, which essentially extends from the first side edge to the second side edge extend, and / or that the bag front and back respectively at least a third or fourth weakening line, in particular perforation, has substantially from the first side edge of the front or back in the direction of the second side edge of front or Back side or from the second side edge of the front or back toward the first side edge front or back cover extend, and / or that the bag front has at least one third weakening line, in particular perforation, which is substantially from the second Margin towards the first n side edge, and that the back has at least a fourth line of weakness, in particular perforation, which extends substantially from the first side edge toward the second side edge, and / or that the bag front and back respectively at least one third or fourth weakening line, in particular perforation, each spaced from the first side edge extending towards the second side edge, and / or that the bag has at least one third weakening line, which is substantially from the first side edge to the second side edge extends, and that the back has a fourth line of weakness, in particular perforation, which extends at a distance from the first side edge toward the second side edge, and / or that the bag on the front side at least a third line of weakness, in particular perforation, has, which is spaced apart from de m the first side edge extends in the direction of the second side edge, and that the back has at least a fourth weakening line, in particular perforation, which extends substantially from the first side edge to the second side edge, and / or that the bag front side at least a third Line of weakness, in particular perforation, which extends substantially from the first side edge toward the second side edge, and in that the back has at least a fourth weakening line, in particular perforation, which is spaced from the first side edge toward the second side edge extends, and / or that the bag front has at least one third line of weakness, in particular perforation, which extends substantially from the second side edge toward the first side edge, and that the back at least a fourth line of weakness, in particular Perf orationsnaht, which is spaced from the first side edge toward the second Side edge extends, and / or that the bag front has at least one third line of weakness, in particular perforation, which extends at a distance from the first side edge toward the second side edge, and that the back has at least a fourth line of weakness, in particular perforation, which extending from the first side edge towards the second side edge, and / or that the bag has at least one third weakening line, in particular perforation seam, extending at a distance from the first side edge towards the second side edge, and at least one fourth Weakening line, in particular perforation, back substantially extending from the second side edge in the direction of the first side edge. Of course, the foregoing variants can be analogously applied to the attachment of the fifth and sixth or the seventh and eighth lines of weakness.

For example, if the rectified lines of weakness do not extend over the entire length or width of the bag, tearing of a unitary bag section can also be accomplished by grasping and pulling the bag against the opposite sides divided by the lines of weakness. In this way, the lines of weakness are not deliberately torn at the respective ends, but the lines of weakness preferably dissolve in the central region.

Furthermore, it can preferably be provided that the substantially rectified first and second weakening lines of the front and rear sides run essentially parallel to the first and / or second side edge of the front or rear side.

According to a preferred embodiment of the bag according to the invention, it is provided that the rectified weakening lines or perforation seams of the front and rear sides in the ready-to-use state lie, at least in sections, substantially on the same line. In this embodiment, the lines of weakness or perforation of the front and back are at least partially adjacent to each other or one above the other, if you put the front and back in the finished bag against each other. Of course, it is also possible that the rectified lines of weakness or perforation of the front and back are not substantially on the same line. For example, these lines of weakness or perforations from the front and back can be slightly offset from each other, for example, in the range of about 1 mm to 15 mm. conveniently, the lines of weakness or perforations on the front and back are on average no more than 10 mm offset from each other. On the front and / or the back, one, two, three or more weakening lines or perforation seams may be present, preferably immediately next to one another. For many applications, it has proved expedient to use only one line of weakening or perforation on the front and back, in particular one which extends in each case from the opening side to the bottom edge or end. The weakening lines or perforation seams of the front and rear sides preferably extend substantially parallel to the longitudinal axis of the front or rear side.

In general, it is sufficient if the respective rectified lines of weakness on the front and back, for example, the first and second lines of weakness of the front and back are arranged such that a portion of the bag can be easily torn off by tearing along these cooperating lines of weakness. In this case, the weakening lines on the bottom or opening-side end of the front and rear sides particularly preferably merge into one another or rest against one another. According to the invention, one can also speak of cooperating first and second, third and fourth, fifth and sixth or seventh and eighth lines of weakness or lines of weakness.

Furthermore, it can be provided that the substantially rectified third and fourth lines of weakness of the front and rear sides extend essentially parallel to the bottom edge and / or the opening edge of the front and rear sides.

According to one embodiment variant of the bag according to the invention, the weakening line or perforation seam of the front side and / or the perforation seam of the rear side can extend essentially from the respective bottom end, in particular to the opening end of the front or rear side. Depending on the size of the bag and the geometry or type of food being packaged, it may also be beneficial for the front and back weakening line or perforations to be further spaced from the adjacent second side edges of the front and back than from the first one adjacent to each other Side margins of front and back.

Accordingly, the first, second, and / or third front and back weakening lines may be spaced farther from the second side edges of the front and back faces than the first side edges of the front and back faces, respectively.

According to the invention, it is provided that the first and second weakening lines or perforation seams of front and back have a distance from the first side edge of front and back, which lies in the range of 1/8 to 3/8 of the width of the bag.

In a corresponding manner, it may be provided that the third and fourth weakening lines of the front and rear sides are further spaced from the bottom edges or the opening side edges of the front and back than from the opening side and bottom edges, respectively, of the front and rear sides. Here, in one embodiment, each of the third and fourth front and back weakening lines may be substantially at a distance from the opening side edge or the bottom edge of the front and back sides, in the range of 1/8 to 3/8 of the length of the bag lies.

In the event that the bags have side wall elements, for example side gussets, the first and second lines of weakening of the front and back can preferably be arranged in the region which is folded in each case from the inner fold of the first side wall element, in particular the side gusset of the first side wall element, extending to the inner fold of the second side wall element, in particular the side fold of the second side wall element. Alternatively, the lines of weakness may also be slightly in the area of the front or back overlapping the folded gusset, for example up to 10 mm, preferably not more than 5 mm apart from the inner edge of the gusset.

According to the invention, the opening edge or the opening end of the front side of the bag lies below the opening edge of the rear side. This can be provided be that the longitudinal extent of the back, measured from the bottom end to the opening end, is greater than the longitudinal extent of the front, measured from the bottom end to the opening end.

For example, the portion of the back side extending from the opening end of the front side to the opening end of the back side may be used to cover or wrap or roll up the packaged food from above. This protruding portion of the back can thus serve as a cover or closure of the bag. In this case, such bags are of particular advantage, in which the longitudinal extent of the back, measured from the bottom end to the opening end, at least twice, in particular at least three times as large as the longitudinal extent of the front, measured from the bottom end to the opening end.

According to a further embodiment of the bag according to the invention can be provided that the line of weakness extends over the entire length of the shorter front side from the bottom to the opening side edge, while the hereby cooperating weakening line of the back extends from the bottom edge in the direction of the opening side edge, without this to reach. For example, it is possible to execute the weakening line on the back side in exactly the same length as the weakening line on the shorter front side. Alternatively, the weakening line of the backside may also be made shorter or, preferably, longer than the weakening line of the shorter front side without again reaching the opening side edge of the rear side. In the described embodiment, the information for the front can also apply vice versa for the back and the information for the back and vice versa for the front.

Bags according to the invention are preferably based essentially on a plastic, paper and / or composite paper material. For example, it is possible to make the front and / or back in parts, eg as a viewing window, or completely in a plastic material, preferably a transparent plastic film material, for example made of PP, PE or PET. Furthermore, the front side and / or the rear side can also be provided with at least one viewing window be made of a transparent plastic film material. In this case, the perforation seam also, if required structurally, run through the viewing window material. According to one embodiment, the viewing window may also be an integral part of the composite paper material. This is achieved by partially omitting the paper web, whereby the film layer of the composite paper material is exposed. Laminated paper materials are generally laminates of paper and plastic film webs which have been laminated on one another. Laminated paper materials in the context of the present invention also include laminates of paper and metal foil webs, for example aluminum foil webs, or laminates of paper, plastic and metal foil webs, for example aluminum foil webs, or laminates of plastic and metal foil webs, for example aluminum foil webs.

The wall materials used for the bag, in particular the front wall or side and / or rear wall or side, can also identify a whole or in sections in a regular or irregular pattern a variety, in particular at least 15, perforations, slots, tears. These openings are generally intended to increase the breathability of the bag so that, for example, warm, moist air can escape from the sealed bag and fresh or cool, relatively dry air can enter the bag into the packaged food product. In this way, it is possible on the one hand to prevent wetting through, ie a sticky consistency, and on the other hand drying out of the packaged products. For example, the described wall openings are at an average distance of their 5 to 25 mm, for example 10 mm, before. These openings may, for example, have an average area of 0.5 to 2 m ² .

According to a further development, the bags according to the invention can also comprise a bag bottom element which connects the, in particular the bottom end of, the front side to the rear side, in particular the bottom end, wherein the bottom element has at least one further weakening line, in particular perforation seam, which in Operative connection with the first or second weakening line of front and back stands. Ideally, the weakening line or perforation seam of the bottom element connects the weakening lines or perforation seams of front and back at their bottom ends.

Furthermore, the bags according to the invention may be provided with side wall elements between the first side edges of front and back and / or the second side edges of front and back. The side elements can represent gussets, which extend from the bottom end of the front and back. It is also possible that the side walls comprise at least two or more gussets. In a further embodiment, it may be provided that the first side wall element has at least one tenth weakening line, in particular perforation seam, which is operatively connected to the third and / or fourth weakening line of the front and back side and / or the second side wall element via at least one eleventh line of weakness, in particular perforation, has, which is in operative connection with the third or fourth line of weakness of the front and back.

In a particularly preferred embodiment, the bag according to the invention is formed essentially in one piece.

The object underlying the invention is further achieved by a method for producing a bag according to the invention comprising the steps mentioned in claim 15.

It is preferred that the first and second lines of weakness ⅛ to ⅜ of the width of the bag are spaced apart from the side edge so that they are substantially rectified in the finished bag on the front and rear sides, respectively, and the substantially rectified lines of weakness in particular, in each case at least in sections, in particular for the most part, of overlapping, mutually overlapping, opposing areas of the front and rear sides.

Particularly preferably it is provided that the first and the second weakening line are so spaced from each other on the continuous web, that they are arranged in the finished bag on the front or on the back so that they are to bring to each other substantially to the plant and especially on the same line.

Dividing lines in the sense of the invention are e.g. Lines of weakness that may be basically implemented, such as the lines of weakness described above. Although regularly mounted transversely to the continuous web and to the transport direction of the continuous web, they do not represent predetermined breaking points during regular transport of the continuous web. Only with additional stress separation takes place along the endless web into separate segments, from which subsequently the final pocket is formed.

In particular, the one-piece design of the bag according to the invention allows extremely efficient mass production, even if this bag is to be executed with side walls, such as gussets. For example, a paper web spaced from the first side edge and parallel to it can be continuously provided with a perforated seam by means of a suitable tool. Subsequently, the paper web can be cut or punched into rectangular segments, whereupon a portion of the bag is turned over to form a preferably perpendicular to the side edges extending fold, which forms the bottom edge of the front and back. The folded first and second side edges of the front and back can then be attached to each other, for example, glued. In this manufacturing variant, the perforation seams of the front and back can be easily superimposed.

With the bag according to the invention, foodstuffs, in particular ready-to-eat foods, can be packed safely and reliably without further ado. In particular, it is possible to close the opening of the bag with the protruding portion of the back. In addition, by tearing off a portion of the bag along the perforations from the front and back, a napkin-like wrapper can be created to keep the food clean and safe when consumed. Of particular advantage here is that by tearing off a portion of the bag, the food product is directly suitable for consumption.

Figur 1

eine schematische Draufsicht auf einen erfindungsgemäßen Beutel,

Figur 2

eine schematische Draufsicht auf eine alternative Ausführungsform eines erfindungsgemäßen Beutels,

Figur 3 a) bis e)

schematische Draufsichten auf einzelne Fertigungsstufen des erfindungsgemäßen Beutels gemäß Figur 1 gemäß einem erfindungsgemäßen Herstellungsverfahren und

Figur 4 a) bis f)

schematische Draufsichten auf einzelne Fertigungsstufen einer alternativen Ausführungsform eines erfindungsgemäßen Beutels gemäß einem alternativen erfindungsgemäßen Herstellverfahren.

Further advantages, features and applications of the present invention will become apparent from the following description of a preferred embodiment in conjunction with the accompanying drawings. In these drawings show

FIG. 1

a schematic plan view of a bag according to the invention,

FIG. 2

a schematic plan view of an alternative embodiment of a bag according to the invention,

FIG. 3 a) to e)

schematic plan views of individual stages of manufacture of the bag according to the invention according to FIG. 1 according to a manufacturing method according to the invention and

FIG. 4 a) to f)

schematic plan views of individual stages of production of an alternative embodiment of a bag according to the invention according to an alternative manufacturing method according to the invention.

FIG. 1 is a schematic plan view of a bag 1 according to the invention can be seen. The bag 1 is a gusseted bag which is shown in the folded state. The front side 2 has an opening-side edge 4, a bottom-side edge 6, and the opposing first and second side edges 8 and 10. Further, the bag has a back 12 having an opening-side end 14, a bottom-side end 16, and opposing first and second side edges 18 and 20. In the illustrated embodiment, the bottom side edges 6 and 18 of the front and rear sides substantially coincide and form an envelope fold. At this point, the substantially one-piece, the bag 1 forming film web has been folded so that the front and back 2 and 12 come to rest on each other. In the illustrated embodiment, the bag is made of a composite paper made of a paper layer and a laminated plastic film layer. While the paper layer faces the observer at the front side 2, the portion 30 of the rear side 12 which is not covered by the front side, faces the laminated plastic material. The side edges of front and back side gussets join. Here are in the side edge regions where the gussets 22 and 24 of the back 12 coincide with the gussets 26 and 28 of the front 2 together, preferably by means of gluing. The gussets 26 and 28 are, as they are present on the inside of the front side 2 and thus covered by this, have been identified by dotted lines 27 and 29 respectively. Due to the use of gussets, the bag can be easily unfolded to accommodate even larger food products extending, for example, from the first side edge to the second side edge of the bag. In the illustrated embodiment of a bag 1 according to the invention, the front and back sides 2 and 12 are not uniform in dimension. Rather, the opening-side end 14 of the rear side 12 projects far beyond the opening-side end 4 of the front side 2. This additional provided by the back 12 section 30 can be used to cover the present in the bag food product or to wrap, whereby at least partially creates a multi-layered construction of the package. This multi-ply has proven to be very beneficial, especially in moist or very greasy foods, but can be safely prevented by wetting moisture or leakage of fat. Furthermore, perforation seams 32 and 34 are present on the front side 2 and the back side 12 of the bag 1. Both perforation seams extend in the illustrated embodiment from the respective bottom side to the opening side end of the front and back. If you put the front and back 2 and 12 together, come in the illustrated embodiment, the perforation seams 32 and 34 substantially to the plant, ie they are superimposed. Perforation seams 32 and 34 are substantially parallel to the front and back side edges and spaced farther from the second side edges of front and back than from the first side edges of front and back. If there is now a food product in the bag 1, advantageously wrapped with the section 30, can be easily torn off a bag section along the perforations the food is partially exposed. Although food products such as sandwiches in the illustrated embodiment may be wrapped several times with the protruding portion of the back, succeeds a safe and accurate demolition with partial release of the food. Here, the user is given the choice either to remove the narrower strip 36 in order to still have as much bag material as possible for the safe holding of the food. Alternatively, the narrower portion 38, which remains after tearing the bag along the perforations, may also be used to hold the food. In this way, always clean consumption of moist or greasy products, without the user at risk of becoming dirty.

FIG. 2 shows an alternative embodiment of a bag 1 according to the invention, in which unlike the bag according to FIG. 1 the front side 2 occupies a larger area relative to the rear side 12, as a result of which the free section 30 of the rear side 12 decreases.

The FIGS. 3 a) to e ) disclose by way of example and in simplified form the production process of a bag 1 according to the invention, as in FIG. 1 shown. First, in this variant, a so-called continuous composite paper web 3 is provided ( Fig. 3a )), in which via a suitable perforation a parallel to the side edges extending perforation 33 is inserted ( Fig. 3b )). Subsequently, the marginal areas of the composite paper web are also automatically folded over or folded in order to form side gussets ( FIG. 3 c) ). Of course, the steps 3 b) and 3 c) can also be carried out in the reverse order or at the same time. In a next step, the film web 3 is severed perpendicular to the side edges in such a way that substantially rectangular sections 5 are obtained with a length extension corresponding to the sum of the front and back lengths (see FIG. 3 d) ). Then, a portion of the separated film web to form an envelope fold 7, (whose position is indicated by dashes in Fig. 3d )). In the area in which the gussets 23 and 25 of the separated film web come to rest on each other, an adhesive has been applied at least in sections beforehand. By pressing on each other in each case in area superimposed gussets, a sufficient bond to form a bag according to the invention is produced ( Fig. 3e )). Since the separated film web has not been folded in the middle, an overhanging portion 30 remains at the back side 12. As shown could, the bag 1 according to the invention can be obtained via only four process steps.

FIGS. 4a) to f ) disclose by way of example in simplified form an alternative production process of a bag 1 according to the invention. In this variant, a so-called endless composite paper web 3 is made available ( Fig. 3a ) into which transverse perforation seams 40 are inserted by means of a suitable perforation tool from the first side edge to the opposite second side edge ( Fig. 4b ). Subsequently, a parallel to the side edge extending perforation 33 is inserted via another perforation tool ( Fig. 4c ). Steps 4 b) and 4 c) can also be implemented in reverse order. In a next step, individual, substantially rectangular sections 5 are separated from the continuous web along the perforation seams 40, for example by means of tensile stress. Thus, the tensile stress acting on the bottom reproduced perforation 40 can be selectively increased, resulting in a tearing off to form a so-called blunt edge. The edges created in this manufacturing process are usually not suitable to produce cuts to the operator or the user. The separated sections 5 can then be formed to form an envelope fold 7 (whose position is indicated by dashes in FIG FIG. 4 e) be marked). In the areas in which the separated film webs come to rest on their inner sides at the respective side edges to each other, an adhesive has been previously applied at least in sections. By pressing the superimposed side edges together, a sufficient bond is produced to form a bag according to the invention ( FIG. 4 f) , Since the separated film web has not been folded in the middle, a protruding portion 30 remains at the back 12. Unlike the bag according to FIG. 3 e) the bag according to FIG. 3f) does not have gussets.

LIST OF REFERENCE NUMBERS

1

bag

2

front

3

Continuous composite web

4

Opening edge of the front

6

bottom edge of the front

7

sulcus

8th

first margin of the front

10

second margin of the front

12

back

14

Opening edge of the back

16

bottom edge of the back

18

first edge of the back

20

second margin of the back

22

first gusset the back

24

second gusset of the back

26

first gusset of the front

23

first side fold of the continuous composite paper web 3

27

hidden gusset of the front

28

second gusset of the front

25

second side fold of the continuous composite paper web 3

29

hidden gusset of the front

30

protruding section of the back

32

Perforation seam of the front

33

perforation seam

34

Perforation seam of the back

36

first tear-off section of the bag

38

second tear-off section of the bag

40

transverse perforation lines

Claims (18)

1. A bag based on a paper and/or a compound paper material for holding groceries, in particular for unbaked or pre-baked pastry goods, ready-baked pastry goods, pizzas, pizza corners, pancakes, crepes, burgers, potato pancakes, sandwiches and similar goods, comprising a front side with a boundary on the opening side and a boundary on the bottom side, as well as a first side boundary and a second, opposite side boundary, and a rear side with a boundary on the opening side and a boundary on the bottom side, as well as a first side boundary and a second, opposite side boundary, wherein the front side and the rear side are connected directly or indirectly in the area of their bottom-sided boundaries at least in sections, and directly or indirectly at least in sections in the area of their first or second side boundaries that touch each other respectively, the bag, on its front side, comprises at least one first attenuation line, in particular a perforation seam, and the bag, on its rear side, comprises at least one second attenuation line, in particular a perforation seam, which extend in alignment with each other from or at a distance from the end on the opening side of the front and rear side through to or in the direction of the end on the bottom side of the front and rear side, characterized in that
   the aligned first and second attenuation lines of the front and rear side are at a distance from the first side boundaries of the front and rear side, which is in the range of 1/8 to 3/8 of the width of the bag, and that
   the opening boundary of the front side is located below the opening boundary of the rear side.
2. The bag according to claim 1, characterized in that
   the respectively aligned attenuation lines of the front and rear side are at an average distance of no more than 30 mm, in particular of no more than 15 mm.
3. The bag according to either of claims 1 or 2, characterized in that the respectively aligned attenuation lines of the front and rear side can be brought into contact on top of each other at least in sections, in particular along regions of the front and rear side located opposite each other, and in particular lie on the same line.
4. The bag according to any one of the preceding claims, characterized in that the respectively aligned attenuation lines of the front and rear side run parallel, at least in sections, in particular along regions of the front and rear side that lie opposite each other.
5. The bag according to any one of the preceding claims, characterized in that the attenuation lines are at least for the large part, in particular fully, straight-lined, wavy or zigzag in form.
6. The bag according to any one of the preceding claims, characterized in that
   the bag, on the front and rear side, comprises at least one first or second attenuation line, in particular a perforation seam, which extends from the end on the bottom side of the front respectively rear side through to the end on the opening side of the front respectively rear side, or
   that the bag, on the front and rear side, comprises at least one first or second attenuation line respectively, in particular a perforation seam, which extends from the end on the bottom side of the front respectively rear side in the direction of the end on the opening side of the front respectively rear side, or
   that the bag, on its front side, comprises at least one first attenuation line, in particular a perforation seam, which extends from the end on the opening side of the front side in the direction of the end on the bottom side of the rear side, and that the rear side comprises at least one second attenuation line, in particular a perforation seam, which extends from the end on the bottom side in the direction of the end on the opening side, or
   that the bag, on its front side, comprises at least one first attenuation line, in particular a perforation seam, which extends from the end on the bottom side in the direction of the end on the opening side, and that the rear side comprises at least one second attenuation line, in particular a perforation seam, which extends from the end on the opening side in the direction of the end on the bottom side, or
   that the bag, on its front side, comprises at least one first attenuation line, in particular a perforation seam, which extends from the end on the opening side through to the end on the bottom side, and that the rear side comprises at least one second attenuation line, in particular a perforation seam, which extends at a distance from the end on the opening side in the direction of the end on the bottom side, or
   that the bag, on its front side, comprises at least one first attenuation line, in particular a perforation seam, which extends at a distance from the end on the opening side in the direction of the end on the bottom side, and that the rear side comprises at least one second attenuation line, in particular a perforation seam, which extends from the end on the opening side through to the end on the bottom side, or
   that the bag, on its front side, comprises at least one first attenuation line, in particular a perforation seam, which extends from the end on the opening side in the direction of the end on the bottom side, and that the rear side comprises at least one second attenuation line, which extends at a distance from the end on the opening side in the direction of the end on the bottom side, or
   that the bag, on its front side, comprises at least one first attenuation line, in particular a perforation seam, which extends from the end on the bottom side in the direction of the end on the opening side, and that the rear side comprises at least one second attenuation line, in particular a perforation seam, which extends at a distance from the end on the opening side in the direction of the end on the bottom side, or
   that the bag, on its front side, comprises at least one first attenuation line, in particular a perforation seam, which extends at a distance from the end on the opening side in the direction of the end on the bottom side, and that the rear side comprises at least one second attenuation line, in particular a perforation seam, which extends from the end on the opening side in the direction of the end on the bottom side, or
   that the bag, on its front side, comprises at least one first attenuation line, in particular a perforation seam, which extends at a distance from the end on the opening side in the direction of the end on the bottom side, and that the rear side comprises at least one second attenuation line, in particular a perforation seam, which extends from the end on the bottom side in the direction of the end on the opening side.
7. The bag according to any one of the preceding claims, characterized in that the respectively aligned attenuation lines of the front and rear side extend, in particular at least in sections, over regions of the front respectively rear side which overlap and which lie opposite each other.
8. The bag according to any one of the preceding claims, characterized in that the aligned first and second attenuation lines of the front and rear side run parallel to the first and/or second side boundary of the front respectively rear side.
9. The bag according to any one of the preceding claims, characterized in that the longitudinal extent of the rear side, measured from the end on the bottom side through to the end on the opening side, is at least double, and in particular at least three times, as large as the longitudinal extent of the front side, measured from the end on the bottom side through to the end on the opening side.
10. The bag according to any one of the preceding claims, further comprising a bag bottom element that connects the front side, in particular the end on the bottom side of the front side, with the rear side, in particular the end on the bottom side of the rear side, wherein the bottom element has at least one further attenuation line, in particular a perforation seam, which interacts with the first and/or second attenuation line of the front and rear side.
11. The bag according to any one of the preceding claims, further comprising first and/or second side wall elements between the first side boundaries of the front and rear side respectively the second side boundaries of the front and rear side.
12. The bag according to claim 11, characterized in that
    the side wall elements are side folds, which in particular extend from the end on the bottom side of the front and rear side.
13. The bag according to either of claims 11 or 12, characterized in that the first and/or second attenuation lines run from the front respectively rear side in the area that extends, in the respectively folded state, from the inner fold of the first side wall element, in particular the side fold of the first side wall element, through to the inner fold of the second side wall element, in particular the side fold of the second side wall element.
14. The bag according to any one of the preceding claims, characterized in that the bag is formed as a single piece.
15. A method for producing a bag according to any one of claims 1 to 14, comprising the steps of

    a. Providing a continuous web of a bag material,

    b. Forming at least one first and at least one second attenuation line, in particular a perforation seam, the second line being at a distance from the first and both lines extending along the longitudinal direction of the continuous web, wherein the attenuation lines are at a distance of 1/8 to 3/8 of the width of the finished bag from a side boundary,

    c. Forming separation lines, in particular perforation seams, at a distance along the transverse direction of the continuous web, which extend at least in sections from the first side boundary through to the second side boundary,

    d. Forming a loop from the continuous web through the connection, at least in sections, of the first and second side areas to form a front and a rear side,

    e. If appropriate, forming first and second side folds that lie opposite each other,

    f. Separating separate segments from the continuous web along the transverse separation lines, in particular by the application of traction,

    g. Forming a closed bottom area on the end on the bottom side of the front and rear side.
16. The method according to claim 15, characterized in that
    the first and second attenuation lines are formed at a distance in such a manner that they lie aligned in the finished bag on the front respectively rear side, and wherein the aligned attenuation lines of the front and rear side extend in particular, respectively at least in sections, in particular for the large part, over regions of the front respectively rear side that overlap each other and that lie opposite each other.
17. The method according to either of claims 16 or 17, characterized in that
    the first and second attenuation line are formed at a distance from each other on the continuous web in such a manner that they are arranged in such a manner on the finished bag on the front respectively rear side that they can be brought into contact on top of each other and in particular lie on the same line.
18. The use of the bag according to any one of claims 1 to 14 for packing or holding groceries, in particular unbaked or pre-baked pastry goods, ready-baked pastry goods, pizzas, pizza corners, pancakes, crepes, burgers, potato pancakes, sandwiches and similar goods.

Images