DE102007026807A1 - Bag for containing foods, containing a perforated seam - Google Patents

Abstract

The present invention relates to a bag for holding foods, in particular unbaked or baked baked goods, ready-baked baked goods, pizza, pizza pancakes, pancakes, crepes, burgers, fritters, sandwiches and the like, comprising a front side with an opening-side edge and a first side edge and a second opposite side edge and a rear side having an opening-side edge and a bottom-side edge and a first side edge and a second opposing side edge, wherein the front side and the rear side are at least partially directly or indirectly in the region of their bottom edges and in the region of their respective first and second side edges are at least partially connected directly or indirectly, wherein the bag front and back has a perforation, which is substantially from the opening end of the front and back to the b odenseitigen end of front and back extends.

Description

The The present invention relates to a bag for containing food, in particular of unbaked or pre-baked baked goods, ready-baked Baked goods, pizza, pizza noodles, pancakes, crepes, burgers, potato pancakes, Sandwiches and the like comprising a front side having 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-side edge as well as with a first margin or a second, opposite one Margin, with the front and the back in the Area of their bottom edges at least in sections directly or indirectly as well as in the area of their each other adjacent first and / or second side edges at least sections are directly or indirectly connected.

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.

The generic packaging bag for Ready-to-eat foods still leave something to be desired, in particular with regard to their operator safety or reliable Handling, as well as in terms of their production. By perforation seams are weak or predetermined breaking points in a packaging bag built-in. These perforations have on one side Page to be sufficiently firm, not immediately during the packaging process to tear down, and on the other hand to be sufficiently weak, to a tearing or tearing of the bag to another as the designated place in reliable Way to prevent, also after prolonged contact with a greasy, warm and / or moist food product.

Of the It is an object of the present invention to provide packaging bags especially for ready-to-eat foods to provide that not with the disadvantages described above generic packaging bag are afflicted and in particular a simple and yet reliable one Allow tearing of the packaging bag, without this the packaged food is impaired and being the torn packaging bag still always perfect as a napkin-like Serving to keep the food product during of consumption. Furthermore, the present invention has the object underlying, a packaging bag of the type described above To access art in a simple way, without but with the described requirement profile losses in To have to buy.

Accordingly, a bag for holding food, especially of ready-to-eat foods, has been found in which the bag has at least one first line of weakness, in particular perforation, on the front side and the bag has at least one second line of weakness, in particular perforation, which is substantially rectified from or spaced from the opening-side end of front and back to the or towards the bottom end of the front and back, and / or that the bag has at least a third line of weakness, in particular perforation, on the front, and that the bag has at least a fourth weakening line, in particular perforation, at the rear, which is substantially rectified from or spaced from the first side edge of front and back to or in the direction of the second side edge of front and Rear side, and / or that the bag has at least a fifth line of weakness, in particular perforation, on the front side and that the bag has at least a sixth line of weakness, in particular perforation, at the rear, which is substantially rectified from or spaced from the opening end of front side. and the rear side extend to or towards the first or second side edge of the front and rear side, and / or that the front side of the bag has at least one seventh weakening line, in particular perforation seam, and that the rear side of the bag has at least one eighth line of weakness, in particular perforation seam, which extend substantially rectilinearly from or spaced from the bottom end front and back to or towards the first or second side edges of front and back surfaces, each being substantially rectilinear n weakening lines of the front and back, in particular at least in sections, in particular for the most part, extend over overlapping, opposing areas of the front and rear sides.

The bags according to the invention are consequently and back each at least one line of weakness which are rectified and accordingly in co-operate such that a portion of the bag containing at least a section of the front and a section of the Backside, reliable and demolished can be. This succeeds then usually very reliable, if the lines of weakness on the front and back over the entire length (from the bottom edge to the opening side Edge) or the entire width (from the first margin to the second Side edge). Such a section of the bag below Release of the object contained therein, for. B. food, can also be removed by using the lines of weakness from front and back z. B. together on the respective begin at the bottom edge and move towards the respective opening side Rim edges without weakening lines up to the opening edge of front and back extend. In this way succeeds a reliable and simple tearing of the bag on, for example, the bottom side Edge. Once the tear off process has started, you can in alternative embodiments, the bag section then also be demolished in the areas that have no lines of weakness have more. Of course, vice versa the weakening lines also at the respective opening side Begin edge of front and back and in the described Working together, without getting to the respective bottom side To extend edge of front or back. Alternatively it can also be provided that the weakening line on the front or back side from the bottom to the opening side Edge extends while the weakening line cooperating therewith on the back or front side from the bottom or opening side Edge in the direction of the opening or bottom edge extends without reaching it, as previously described. When a bag is in the unfilled state, the front and back to each other. Rectified first and second or third and fourth or fifth and sixth or Cover the seventh and eighth lines of weakness on the front and back here regularly a common or overlapping bag area or are arranged side by side or are at least in sections one above the other. Are the respective rectified lines of weakness at least in sections next to each other, they preferably have over an average distance of not more than 30 mm, preferably of not more than 15 mm.

The previous versions apply in the same way for Lines of weakness extending from or spaced from the first or second side edge toward or to the second or extend first margin, as well as for lines of weakness, extending from or spaced from the bottom or opening side Edge toward or to the first or second margin extend.

A Line of weakness, which in the sense of the invention in the direction on an edge, be it on the floor or on the opening side Edge or a margin, which does not extend to this edge completed, but ends before spaced from this edge. In general, this line of weakness ends preferably with a distance of at least 50 mm, in particular at least 15 mm and preferably at least 5 mm from the respective one Edge of front and back. Begins a line of weakness spaced from an edge, the distance to this is z. B. 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 one 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, which extends from the first or second side edge in the direction of the second or first side edge of the front and / or rear side, preferably has a longitudinal extent of at least one third and be more preferably, at least half of the widthwise extension of the front or back side between the first and second side edges.

Around to be rectified within the meaning of the present invention have the first and second, and the third and fourth and the fifth, respectively and sixth and seventh and eighth lines of weakness, respectively not necessarily parallel and / or to each other to get lost. The parallel alignment is meanwhile too the preferred embodiments. Rectified lines of weakness can z. B. also cross one or more times, but can also spaced from each other or side by side on front or Back run without crossing, as long as each the safe and reliable tearing of a bag section along both rectified lines of weakness occurs.

The Weakening lines or perforation can basically in any form on the front and / or back, as long as an inventive Purpose, e.g. B. a bag section unproblematic and reliable To be able to remove the bag is achieved. For example can be the lines of weakness or perforations be wavy or have a zigzag pattern. Prefers are the lines of weakness or perforations arranged along a straight line.

The Side edges of front and back are preferred along their respective mutual investment areas substantially completely interconnected. In one embodiment are the bottom edges or ends of front and back to each other and are substantially complete interconnected or in one piece, to form in this way the bag bottom.

A Weakening line or perforation seam in the sense of the present Invention can be carried out in many ways be. Such lines of weakness and perforation seams and / or lines and their preparation are familiar to the expert. weakening lines and perforation in the sense of the present invention are also those that weaken in some areas of the material, for example, the area-wise use of thinner or weaker material, without clashing have the following perforations or punches. A line of weakness or perforation seam according to the present invention accordingly allows a reliable or tearing off a section of the front and back of the bag along this 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, comprehensively z. B. a width of several millimeters, executed be. Of course, the width of a line of weakness on one and the same side and / or the width of rectified ones Lines of weakness also vary. A line of weakness in the context of the present invention, when z. B. as a perforated seam present, may 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, and / or that the bag has front and rear respectively at least one first and second weakening line, in particular perforation, substantially from the bottom end of the front and back in the direction of the opening-side end of the front or rear side, and / or that the bag has front and back respectively at least one first and second weakening line, in particular perforation, substantially from the opening-side end of front or Back towards the bottom End of front or back cover, and / or that the bag front has at least one first line of weakness, in particular perforation, which extends substantially from the opening end of the front towards the bottom end of the back and that the back at least a second weakening line, in particular perforation seam, which extends substantially from the bottom end towards the opening end, and / or that the bag has at least one first line of weakness, in particular perforation, extending substantially from the bottom end extends in the direction of the opening-side end, and that the back has at least one second weakening line, in particular perforation, which extends substantially from the opening end towards the bottom end, and / or that the bag front and back each because at least one first and second weakening line, in particular perforation seam, which extend substantially at a distance from the opening-side end of the front or rear side towards the bottom end of the front and rear side, respectively, and / or that the bag is on the front side at least one first weakening line, in particular perforation, which extends from the opening end to the bottom end and that the back at least one second Schwä and / or that the bag has at least one first line of weakness, in particular perforation, at a distance from the opening-side end in the direction of the front side extending bottom end, and that the back has at least one second line of weakness, in particular perforation, which extends from the opening end to the bottom end, and / or that the bag on the front side has at least one first line of weakness, in particular perforation, extending from extends the opening-side end toward the bottom end, and that the rear side has at least one second line of weakness extending at a distance from the opening end towards the bottom end, and / or that the bag is at least one front side first weakening line, in particular perforation seam, which extends from the bottom end toward the opening end, and that the rear side has at least one second weakening line, in particular perforation, extending at a distance from the opening end towards the bottom end , and / or in that the bag has at least one first weakening line, in particular perforation seam, which extends at a distance from the opening end towards the bottom end, and the rear side has at least one second weakening line, in particular perforation seam, extending from the opening-side end extends in the direction of the bottom-side end, and / or that the bag has at least one first weakening line, in particular perforation seam, which extends at a distance from the opening-side end towards the bottom-side end, and that the rear side has at least one second weakening line, in particular perforation seam, which extends from the bottom end towards the opening end.

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 side least a third line of weakness, in particular perforation, which extends substantially from the second side edge in the direction of the first side edge, and that the back at least one fourth line of weakness, in particular Per and / or in that the bag has at least one third weakening line, in particular a perforation seam, which extends at a distance from the first side edge in the direction of the second side edge and in that the back has at least a fourth line of weakness, in particular perforation, extending from the first side edge towards the second side edge, and / or that the bag has at least one third line of weakness, in particular perforation, spaced from the first side extending first side edge in the direction of the second side edge, and that at least a fourth line of weakness, in particular perforations seam, extends rearwardly substantially from the second side edge toward the first side edge.

Of course can the previous variants analogously to the attachment the fifth and sixth or the seventh and eighth lines of weakness be applied.

Lie for example, the rectified lines of weakness not over the entire length or width of the bag before, a tearing of a unitary bag section also succeed by bringing the bag to the through the lines of weakness seizes split, opposite sides and pulls apart. In this way, the lines of weakness do not become The targeted ends torn, but the lines of weakness preferably dissolve in the middle region.

Of Further, it may be preferred that the substantially rectified first and second lines of weakness from front and back substantially parallel to first and / or second side edge of front and back, respectively run.

According to one preferred embodiment of the invention Bag is provided that the rectified lines of weakness or perforation seams from front and back in the ready-to-use state, at least in sections, essentially lie on the same line. In this embodiment, the lie Weakening lines or perforation seams of front and back at least in sections to each other or on top of each other, if you compare the front and back of the finished bag against each other sets. Of course it is also possible that the rectified lines of weakness or perforation from the front and back not substantially on the same Line lie. For example, these lines of weakness or perforation seams from front and back slightly offset from each other, for example in Range from about 1 mm to 15 mm. Conveniently, the Weakening lines or perforation seams of front and back not offset on average by more than 10 mm. On the front and / or the back can one, two, three or more lines of weakness or perforations, preferably present directly next to each other. For many Applications it has proven to be expedient on the front and back only one line of weakness or To use perforation, especially one that itself each from the opening side to the bottom edge or end extends. The weakening lines or perforation seams from the front and back preferably extend substantially parallel to the longitudinal axis of front and back.

in the general, it suffices 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 side arranged to each other that a section of the bag without another by tearing along this cooperating Weakening lines can be demolished. Go especially preferred here the weakening lines on the bottom or opening side End of front and back into each other or are adjacent to each other. According to the invention one also of cooperating first and second, third and fourth, fifth and sixth or seventh and eighth lines of weakness or weakening line pairs speak.

Further can be provided that the substantially rectified third and fourth lines of weakness of front and back substantially parallel to the bottom edge and / or the opening side Edge of front or back run.

According to one Embodiment of the invention Bag can be the line of weakness or perforation the front and / or the perforation seam of the back essentially centrally between the opposite ones Side edges of the respective bottom end in particular to the opening end of the front and back run. Depending on the size of the bag and the geometry or type of food to be packaged can also be cheap be that the line of weakness or perforation seams from the front and back of the adjacent second side margins of front and back are spaced as from the abutting first side edges from front and back.

Accordingly, can in each case the first, second and / or third weakening lines from the front and back further from the second side edges of Front and back are spaced apart from the first Side margins of front and back.

According to one expedient embodiment is provided here, that the first and second weakening lines or perforation seams from the front and back substantially a distance from have the first margin of front and back, which is in the range of 1/8 to 3/8 of the width of the bag.

In a corresponding manner it can be provided that in each case the third and fourth Schwä Front and rear guide lines are further spaced from the bottom edges or the opening side edges of front and back than from the opening side and bottom edges, respectively, of the front and back 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.

For the case that the bags have sidewall elements, for example Gussets may have the first and second Front and back weakening lines preferably be arranged in the area, which is in the folded state from the inner fold of the first side wall element, in particular the gusset of the first side wall element, to the inside Crease of the second side wall element, in particular the side fold of the second side wall element. Alternatively you can the lines of weakness are also slightly in the Range of front or back present with the folded gusset overlaps, for example until at 10 mm, preferably not more than 5 mm apart from the inner edge or fold of the gusset.

In In another embodiment, the front and back sides of the bag according to the invention so dimensioned and be constructed so that their respective opening edges lying at about the same height, as this of conventional bags is known.

According to one preferred embodiment is the opening edge or the opening end of the front of the bag below the opening edge of the back. Here can be provided that the longitudinal extent of the back, measured from the bottom end to the opening end, larger is the longitudinal extent of the front, measured from the bottom end to the opening end.

For example can be the opening end of the front to the opening the rear side extending portion of the back used to cover the packaged food from above or wrapping or curling. This supernumerary Section of the back can therefore be used as a cover or Serve to seal the bag. In this case, such bags are of special Advantage in which the longitudinal extent of the back, measured from the bottom end to the opening side End, at least twice, especially at least three times, is so great as the longitudinal extent of the front, measured from the bottom side End to the opening end.

According to one further embodiment of the bag according to the invention can be provided that the line of weakness is over the entire length of the shorter front of the bottom side to the opening side edge extends, while the coacting weakening line of the Back side from the bottom edge in the direction of the opening side Randes extends without reaching it. For example it is possible, the weakening line on the back in exactly the same length as the Line of weakness on the shorter front. Alternatively, the weakening line can be the back also shorter or preferably longer than the line of weakness the shorter front be executed without turn the opening-side edge of the back to reach. In the described embodiment can the information for the front also reversed for the back and the details for the back too reverse apply to the front.

invention Bags are preferably based essentially on a plastic, Paper and / or composite paper material. For example, it is possible the front and / or back in parts, z. B. as a viewing window, or completely in a plastic material, preferably a transparent plastic film material, e.g. As PP, PE or PET, perform. Furthermore, the front and / or the back also with at least one window a transparent plastic film material be equipped. Here, the perforation seam also, if constructive required to pass through the viewing window material. According to one Embodiment, the viewing window can also be an integral part of the composite paper material. This succeeds by sections Discard the paper web, causing the film layer of the composite paper material is exposed. As is known, composite paper materials generally laminates of paper and plastic film webs, which one has laminated on each other. Composite paper materials in the sense The present invention also includes laminates of paper and paper Metal foil webs, for example aluminum foil webs, or laminates from 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 z. B. warm, moist air escape from the sealed bag and fresh or cool, relatively dry air can penetrate into the bag to 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 wall openings described are at an average distance of their 5 to 25 mm, z. B. 10 mm, before. These openings can z. B. have an average area of 0.5 to 2 m ² .

The Bags according to the invention can according to a Development also include a bag bottom element, the the, in particular the bottom end of the, front with the, especially the bottom end of the, back side connects, wherein the floor element has at least one ninth line of weakness, in particular perforation, has, in operative connection with the first or second line of weakness of front and back Back stands. Ideally, the line of weakness connects or perforation seam of the floor element the weakening lines or perforation seams from front and back at the bottom ends.

Further can the bags of the invention with Sidewall elements between the first side edges of Front and back and / or the second side edges be equipped from the front and back. It can the side elements represent gussets extending from the bottom Stretch the end of the front and back. Here is It is also possible that the side walls at least include two or more gussets. In a further embodiment can be provided that the first side wall element via at least one tenth line of weakness, in particular perforation, has, which is in operative connection with the third and / or fourth line of weakness of front and back and / or that the second side wall element via at least an eleventh weakening line, in particular perforation seam, which is in operative connection with the third or fourth line of weakness of front and back.

In a particularly preferred embodiment of the invention Bag formed substantially in one piece.

• a) Zurverfügungstellung einer Endlosbahn eines Beutelmaterials mit gegenüberliegenden ersten und zweiten Seitenrändern,
• b) Anbringen mindestens einer Schwächungslinie, insbesondere Perforationsnaht, entlang der Längsausrichtung der Endlosbahn beabstandet von den ersten und zweiten Seitenrändern,
• c) gegebenenfalls Umklappen mindestens eines Seitenrands, insbesondere der ersten und zweiten Seitenrandränder, in Richtung der Mittellängsachse der Endlosbahn unter Ausbildung mindestens einer Seitenfalte,
• d) Abtrennen separater Segmente von der Endlosbahn mittels Schneidens oder Stanzens,
• e) Aufeinanderklappen von ersten und zweiten Abschnitten des abgetrennten Segments unter Ausbildung einer Umschlagfalte, die sich zwischen den sich gegenüberliegenden ersten und zweiten Seitenrändern erstreckt, insbesondere senkrecht zu diesen verläuft, sowie unter Ausbildung von Vorder- und Rückseite des Beutels, und
• f) Befestigen der aneinander anliegenden ersten und zweiten Seitenränder von Vorder- bzw. Rückseite.

The object underlying the invention is further achieved by a method for producing a bag according to the invention comprising the steps:

• a) providing an endless web of bag material having opposite first and second side edges,
• b) attaching at least one line of weakness, in particular perforation, along the longitudinal direction of the continuous web, spaced from the first and second side edges,
• c) optionally folding over at least one side edge, in particular the first and second side edge edges, in the direction of the central longitudinal axis of the endless web, forming at least one side fold,
• d) separating separate segments from the continuous web by means of cutting or punching,
• e) collapsing first and second sections of the severed segment to form a fold which extends between the opposing first and second side edges, in particular perpendicular thereto, as well as forming the front and back of the bag, and
• f) attaching the abutting first and second side edges of front and back, respectively.

• a) Zurverfügungstellung einer Endlosbahn eines Beutelmaterials mit gegenüberliegenden ersten und zweiten Seitenrändern,
• b) beabstandetes Anbringen von Trennungslinien, insbesondere Perforationsnähte, entlang der Querausrichtung der Endlosbahn, die sich zumindest abschnittsweise von dem ersten Seitenrand bis zu dem zweiten Seitenrand erstrecken,
• c) Anbringen mindestens einer Schwächungslinie, insbesondere Perforationsnaht, entlang der Längsausrichtung der Endlosbahn beabstandet von den ersten und zweiten Seitenrändern,
• d) gegebenenfalls Umklappen mindestens eines Seitenrands in Richtung der Mittellängsachse der Endlosbahn unter Ausbildung mindestens einer Seitenfalte,
• e) Abtrennen separater Segmente von der Endlosbahn entlang der querverlaufenden Trennungslinien, insbesondere durch Zugbeanspruchung,
• f) Aufeinanderklappen von ersten und zweiten Abschnitten des abgetrennten Segments unter Ausbildung einer Umschlagfalte, die sich zwischen den sich gegenüberliegenden ersten und zweiten Seitenrändern erstreckt, insbesondere senkrecht zu diesen verläuft, sowie unter Ausbildung von Vorder- und Rückseite des Beutels, und
• g) Befestigen der aneinander anliegenden ersten und zweiten Seitenränder von Vorder- bzw. Rückseite.

Alternatively, a method may be provided, comprising the following steps:

• a) providing an endless web of bag material having opposite first and second side edges,
• b) spaced attachment of dividing lines, in particular perforation seams, along the transverse orientation of the continuous web, which extend at least in sections from the first side edge to the second side edge,
• c) applying at least one line of weakness, in particular perforation, along the longitudinal direction of the continuous web, spaced from the first and second side edges,
• d) optionally folding over at least one side edge in the direction of the central longitudinal axis of the continuous web while forming at least one gusset,
• e) separating separate segments from the continuous web along the transverse dividing lines, in particular by tensile stress,
• f) collapsing first and second sections of the severed segment to form an interfold fold extending between the opposing first and second side edges, in particular perpendicular thereto, and forming the front and back sides of the bag, and
• g) attaching the abutting first and second side edges of front and back respectively.

there can also be provided that the process step c) the process step b) precedes or the process steps b) and c) substantially be made simultaneously.

• a) Zurverfügungstellung einer Endlosbahn eines Beutelmaterials,
• b) Anbringen mindestens einer ersten und mindestens einer zweiten, von der ersten beabstandeten Schwächungslinie, insbesondere Perforationsnaht, jeweils entlang der Längsausrichtung der Endlosbahn beabstandet von den sich gegenüberliegenden Seitenbereichen,
• c) beabstandetes Anbringen von Trennungslinien, insbesondere Perforationsnähten, entlang der Querausrichtung der Endlosbahn, die sich zumindest abschnittweise von dem ersten Seitenrand bis zu dem zweiten Seitenrand erstrecken,
• d) Bilden eines Schlauches aus der Endlosbahn durch zumindest abschnittsweises Verbinden der ersten und zweiten Seitenbereiche unter Ausbildung von Vorder- und Rückseite,
• e) gegebenenfalls Ausbilden von einander gegenüberliegenden ersten und zweiten Seitenfalten,
• f) Abtrennen separater Segmente von der Endlosbahn entlang der querverlaufenden Trennungslinien, insbesondere durch Zugbeanspruchung,
• g) Ausbilden eines verschlossenen Bodenbereichs am bodenseitigen Ende von Vorder- und Rückseite.

Bags according to the invention can also be obtained obtained by a process comprising the steps

• a) providing an endless web of a bag material,
• b) affixing at least a first and at least one second weakening line, in particular perforation seam, spaced apart from the first one, in each case along the longitudinal orientation of the endless web, at a distance from the opposite side regions,
• c) spaced attachment of dividing lines, in particular perforation seams, along the transverse orientation of the continuous web, which extend at least in sections from the first side edge to the second side edge,
• d) forming a tube from the continuous web by at least partially connecting the first and second side regions to form the front and rear side,
• e) optionally forming opposing first and second gussets,
• f) separating separate segments from the continuous web along the transverse dividing lines, in particular by tensile stress,
• g) forming a sealed bottom area at the bottom end of the front and back.

in this connection it is preferred that the first and second lines of weakness be placed so spaced that they in the finished Bag on the front and on the back essentially are rectified and wherein the substantially rectified Lines of weakness of front and back in particular in each case at least in sections, in particular for most part, overlapping each other, opposite areas of front and back extend.

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

Dividing lines in the context of the invention are z. B. lines of weakness, the can basically be executed as the preceding described weakening lines. Although regularly mounted transversely to the continuous web and to the transport direction of the continuous web, Do not put any in the regular transport of the endless web Predetermined breaking points. Only with additional stress Separation takes place along the continuous web into separate segments, from which subsequently formed the final bag becomes.

Especially the one-piece design of the invention Bag allows extremely efficient mass production, even if this pouch with sidewalls, for example, to perform gussets. For example may be a paper web spaced from the first side edge and parallel For this purpose, continuously with a perforation seam using a suitable Tool be provided. Subsequently, the paper web cut into rectangular segments or punched out, whereupon a portion of the bag is transferred under training a preferably perpendicular to the side edges extending fold, which the bottom edge of the front and back forms. The folded first and second margins from the front and back can then together attached, z. B. glued. In this production variant, the Perforation seams from front and back without to lie on top of each other.

With the bag of the invention can be food, In particular, ready-to-eat foods are safe and sound pack reliably. In particular, it is possible the opening of the bag with the protruding Close section of the back. About that In addition, by tearing off a portion of the bag along the perforations on the front and back a napkin-like cladding to be created with the food is kept clean and safe when consumed leaves. Of particular advantage here is that tearing off a portion of the bag, the food product is directly suitable for consumption.

Further Advantages, features and applications of the present Invention will be apparent from the following description of a preferred Embodiment in connection with the adjacent Drawings. In these drawings show

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

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

3a) to e) schematic plan views of individual stages of manufacture of the bag according to the invention 1 according to a manufacturing method according to the invention and

4a) to f) are 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.

1 is a schematic plan view of a bag according to the invention 1 refer to. At the bag 1 it is a gusseted bag which is shown in the folded state. The front 2 has an opening edge 4 a bottom edge 6 and the opposing first and second side edges 8th and 10 , Furthermore, the bag has a back 12 with an opening-side end 14 , a bottom end 16 and opposing first and second side edges 18 and 20 , In the illustrated embodiment, the bottom side edges fall 6 and 18 from the front and back substantially together and form an envelope fold. At this point, the essentially one-piece is the bag 1 forming film web has been folded, so that front and back 2 respectively. 12 come into contact with 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 at the front 2 facing the viewer, you look at the not covered by the front section 30 the back 12 on the laminated plastic material. The side edges of front and back side gussets join. Here are in the marginal areas where the gussets 22 and 24 the back 12 with the gussets 26 and 28 the front 2 fall together, connected together, preferably by means of gluing. The gussets 26 and 28 are as they are on the inside of the front 2 be present and thus covered by this, by dotted lines 27 respectively. 29 been identified. Due to the use of gussets, the bag can be unfolded without further, to accommodate even larger food products, the z. B. extend from the first side edge to the second side edge of the bag. In the illustrated embodiment of a bag according to the invention 1 are front and back 2 and 12 not uniform sized. Rather, the opening-side end sticks out 14 the back 12 far beyond the opening end 4 the front 2 out. This addition through the back 12 provided section 30 can be used to cover or wrap the food product present in the bag, whereby at least partially a multilayer structure of the packaging is formed. 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, lie on the front 2 and the back 12 of the bag 1 Perforationsnähte 32 respectively. 34 in front. Both perforation seams extend in the illustrated embodiment from the respective bottom side to the opening side end of the front and back. Laying the front and back 2 and 12 to each other, come in the illustrated embodiment, the perforation seams 32 and 34 essentially to the plant, ie they are superimposed. The perforation seams 32 and 34 extend substantially parallel to the side edges of the front and back and are further spaced from the second side edges of front and back, as from the first side edges of front and back. Is now a food product in the bag 1 before, advantageously wrapped with the section 30 , By simply tearing off a bag portion along the perforations, the food can be partially uncovered. Although food products such. B. sandwiches can be wrapped several times in the illustrated embodiment with the protruding portion of the back, manages a safe and accurate demolition under partial release of the food. Here the user is given the choice, either the narrower strip 36 in order to have as much bag material as possible for the safe keeping of the food available. Alternatively, the narrower section can also be used 38 which remains after the tearing of the bag along the perforations, are used to hold the food. In this way, always clean consumption of moist or greasy products, without the user at risk of becoming dirty.

2 shows an alternative embodiment of a bag according to the invention 1 in which, unlike the bag according to 1 the front 2 relative to the back 12 occupies a larger area, resulting in the free section 30 the back 12 reduced.

The 3a) to e) disclose by way of example and in simplified form the production process of a bag according to the invention 1 , as in 1 shown. First, in this variant, a so-called endless composite paper web 3 made available ( 3a) ), in which via a suitable perforation tool extending parallel to the side edges perforation 33 is inserted ( 3b) ). Subsequently, the marginal areas of the composite paper web are also automatically folded over or folded in order to form side gussets ( 3c) ). Of course, the steps 3b) and 3c) also be carried out in reverse order or at the same time. In a next step, the film web 3 cut in the manner perpendicular to the side edges that substantially rectangular sections 5 are obtained with a length extension equal to the sum of the front and back lengths (see 3d) ). So then becomes a portion of the separated film web to form an envelope fold 7 , (whose position is indicated by dashes in 3d )). In the area where the gussets 23 and 25 the separated film web come to rest on each other, an adhesive has been previously at least partially abandoned. 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 ( 3e) ). Since the separated film web has not been folded in the middle, an overhanging section remains 30 at the back 12 , As could be shown, the bag according to the invention 1 be obtained over only four process steps.

4a) to f) disclose by way of example in simplified form an alternative manufacturing process of a bag according to the invention 1 , In this variant, a so-called endless composite paper web 3 made available ( 3a ), in which via a suitable perforating tool from the first side edge to the opposite second side edge transverse perforation seams 40 be inserted ( 4b ). Subsequently, a parallel to the side edge extending perforation via another perforation tool 33 inserted ( 4c ). The steps 4b) and 4c) can also be implemented in reverse order. In a next step, individual, substantially rectangular sections 5 from the continuous web along the perforation seams 40 , For example, by means of tensile stress, separated. So can the tensile stress on the bottom reproduced perforation 40 acts to be selectively increased, resulting in a tearing 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 to form an envelope fold 7 (whose position is indicated by dashes in 4e )). 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 ( 4f ). Since the separated film web has not been folded in the middle, an overhanging section remains 30 at the back 12 , Unlike the bag according to 3e) the bag has according to 3f) not over gussets.

The in the above description, in the claims as well features of the invention disclosed in the drawings both individually and in any combination for the realization of the invention in its various embodiments be essential.

1

bag

2

front

3

Continuous composite web

4

opening side Edge of the front

6

bottom-side Edge of the front

7

sulcus

8th

first Side edge of the front

10

second Side edge of the front

12

back

14

opening side Edge of the back

16

bottom-side Edge of the back

18

first Edge of the back

20

second Side edge of the back

22

first Gusset of the back

24

second Gusset of the back

26

first Gusset of the front

23

first gusset of the continuous composite paper web 3

27

concealed Gusset of the front

28

second Gusset of the front

25

second side fold of the continuous composite paper web 3

29

concealed Gusset of the front

30

protruding Section of the back

32

perforation seam the front

33

perforation seam

34

perforation seam the back

36

first Tear-off section of the bag

38

second Tear-off section of the bag

40

transverse perforation

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• US 5335996 [0002, 0005]
• JP 2003335348 A [0003]
• US 5988882 [0004]
• - JP 2004142165 A [0005]

Claims (32)

Bags for containing foodstuffs, in particular unbaked or pre-baked baked goods, ready-baked baked goods, pizza, pizza pancakes, pancakes, crepes, burgers, fritters, sandwiches and the like, comprising a front side with an opening-side edge and a first side edge and a second, opposite one Side edge and a rear side with an opening-side edge and a bottom edge and a first side edge and a second, opposite side edge, wherein the front and back in the region of their bottom edges at least partially directly or indirectly and in the region of their respective adjacent first and / or second side edges are at least partially directly or indirectly connected, characterized in that the bag on the front side at least one first line of weakness, in particular perforation, and that the bag on the back side at least a second Schwäc Suction line, in particular perforation, which extend substantially rectified from or spaced from the opening end of the front and back to the or in the direction of the bottom end of the front and back, and / or that the bag at least front a third weakening line, in particular perforation, and that the bag has at least a fourth weakening line, in particular perforation, substantially rectified from or spaced from the first side edge of the front and back to or in the direction of the second Side edge of front and back cover, and / or that the bag front has at least a fifth line of weakness, in particular perforation, and that the bag has at least a sixth line of weakness, in particular perforation, at the rear, which is substantially rectified from or at least spaced apart from the opening-side end of the front and rear sides up to or towards the first or second side edge of the front and rear sides, and / or that the bag has at least one seventh weakening line, in particular perforation seam, on the front side; Bag back has at least an eighth line of weakness, in particular perforation, extending substantially rectified from or spaced from the bottom end of the front and back to the or in the direction of the first or second side edge of front and back, wherein each of the substantially rectified lines of weakness of the front and back, in particular at least in sections, in particular for the most part, extend over overlapping, opposing areas of the front and rear sides. Bag according to claim 1, characterized in that the respective substantially rectified lines of weakness from front and back an average distance not more than 30 mm, in particular not more than 15 mm, exhibit. Bag according to claim 1 or 2, characterized that each substantially rectified lines of weakness from the front and back at least in sections, in particular along opposing areas of frontal and back, essentially to each other brought to the plant and in particular are on the same line. Bag according to one of the preceding claims, characterized in that each substantially rectified Weakening lines from the front and back at least in sections, in particular along opposite each other Area of front and back, essentially parallel run. Bag according to one of the preceding claims, characterized in that the weakening lines at least for the most part, in particular completely, straight, wavy or zig-zag are. Bag according to one of the preceding claims, characterized in that the bag has front and back respectively at least one first and second weakening line, in particular perforation, extending substantially from the bottom end of the front or back to the opening end of Front and / or rear side extend, and / or that the bag front and back respectively at least one first and second weakening line, in particular perforation, has, extending substantially from the bottom end of the front or back in the direction of the opening side End of front or back cover extend, and / or that the bag front and back respectively at least one first and second weakening line, in particular perforation, has substantially from the opening side of the front and back in the direction of extend the bottom end of the front or back, and / or in that the bag has at least one first weakening line, in particular perforation seam, on the front side, which extends essentially from the opening-side end of the front side in the direction of the bottom-side end of the rear side, and in that Rear side at least one second weakening line, in particular perforation, which extends substantially from the bottom end toward the opening end, and / or that the bag front side has at least one first line of weakness, in particular perforation, substantially from the bottom end toward the opening-side end extends, and that the back has at least one second line of weakness, in particular perforation, which extends substantially from the opening end towards the bottom end, and / or that the bag front and back in each case 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, and / or that the front side bag m at least a first line of weakness, in particular perforation, which extends from the opening end to the bottom end and that the back has at least one second line of weakness, in particular perforation, which extends at a distance from the opening end in the direction of the bottom end , and / or in that the bag has at least one first weakening line, in particular perforation seam, which extends at a distance from the opening end towards the bottom end, and the rear side has at least one second weakening line, in particular perforation seam, extending from extends the opening-side end to the bottom end, and / or that the bag front has at least one first line of weakness, in particular perforation, extending from the opening end towards the bottom end, and that the rear side has at least a second line of weakness extending at a distance from the opening end toward the bottom end, and / or that the bag has at least one first line of weakness, in particular perforation, extending from the bottom end towards the opening side End, 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, and / or that the bag front side has at least one first line of weakness, in particular perforation, which extends at a distance from the opening-side end toward the bottom end, and that the rear side has at least one second weakening line, in particular perforation seam, which extends from the opening-side end toward the bottom end, and / or in that the bag has at least one first line of weakening, in particular perforation, at the front, which extends at a distance from the opening end toward the bottom end, and the rear side identifies at least one second line of weakening, in particular perforation, extending from the bottom end extends toward the opening-side end. Bag according to one of the preceding claims, characterized in that the bag has front and back respectively at least one third and fourth weakening line, in particular perforation, which extend substantially from the first side edge to the second side edge, and / or the bag has at least one third or fourth weakening line, in particular perforation seam, on the front and rear sides, which essentially extend from the first side edge of the front or rear side toward the second side edge from the front or rear side or from the second side edge Side edge of the front or back in the direction of the first side edge front or back cover, and / or that the bag front has at least one third line of weakness, in particular perforation, extending substantially from the second side edge in the direction of the first Margin extends, and that the back at least one e fourth weakening line, in particular perforation, which extends substantially from the first side edge in the direction of the second side edge, and / or that the bag front and back each have at least one third and fourth weakening line, in particular perforation, which each spaced from the first side edge toward the second side edge, and / or that the bag has at least one third line of weakness extending substantially from the first side edge to the second side edge, and the back side is a fourth line of weakness , in particular perforated seam, which extends at a distance from the first side edge in the direction of the second side edge, and / or that the bag has at least one third weakening line, in particular perforation seam, which is spaced from the first side edge in the direction of the second Page margin ers tucks, and that the back at least a fourth line of weakness, especially perforations seam, which extends substantially from the first side edge to the second side edge, and / or that the bag front has at least one third weakening line, in particular perforation, extending substantially from the first side edge towards the second side edge extends, and that the back has at least 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 one third line of weakness, in particular perforation, has extending substantially from the second side edge toward the first side edge, and that the back has at least a fourth line of weakness, in particular perforation, extending at a distance from the first side edge towards the second side edge, and / or that the bag is front side Wed. At least a third line of weakness, in particular perforation, which extends at a distance from the first side edge in the direction of the second side edge, and that the back has at least a fourth line of weakness, in particular perforation, extending from the first side edge in the direction of the second Side edge extends, and / or that the bag has at least one third weakening line, in particular perforation, which extends at a distance from the first side edge toward the second side edge, and that at least a fourth line of weakness, in particular perforation, back substantially from the second side edge extending toward the first side edge. Bag according to one of the preceding claims, characterized in that the substantially rectified first and second lines of weakness of front and back substantially parallel to the first and / or second side edge run from the front or back. Bag according to one of the preceding claims, characterized in that the substantially rectified third and fourth lines of weakness of front and back substantially parallel to the bottom edge and / or the opening side Edge of front or back run. Bag according to one of the preceding claims, characterized in that the substantially rectified first and second lines of weakness of front and back further from the second margins of the front and back spaced apart from the first margins of frontal and back. Bag according to one of the preceding claims, characterized in that the substantially rectified first and second lines of weakness of front and back essentially a distance from the first side edges of front and back, in the range of 1/8 to 3/8 of the width of the bag lies. Bag according to one of the preceding claims, characterized in that the substantially rectified third and fourth lines of weakness of front and back farther from the bottom edges or the opening side Margins spaced from front and back are as from the opening side and bottom edges, respectively from front and back. Bag according to one of the preceding claims, characterized in that the substantially rectified third and fourth lines of weakness of front and back essentially a distance from the opening-side edge or have the bottom edge of the front and back, which is in the range of 1/8 to 3/8 of the length of the bag. Bag according to one of the preceding claims, characterized in that the opening edge of the front is present below the opening edge of the back. Bag according to claim 14, characterized that the longitudinal extent of the back, measured from the bottom end to the opening end, larger is the longitudinal extent of the front, measured from the bottom end to the opening end. Bag according to claim 14 or 15, characterized that the longitudinal extent of the back, measured from the bottom end to the opening end, at least twice, in particular at least three times, is as large as the longitudinal extent of the front, measured from the bottom side End to the opening end. Bag according to one of the preceding claims, characterized in that it is essentially on a paper, Plastic and / or composite paper material based or at least in parts. Bag according to one of the preceding claims, further comprising a bag bottom element, which connects the, in particular the bottom end of the, front with the, in particular the bottom end of, the back, wherein the bottom element via at least a ninth Schwä line, in particular perforation, has, which is in operative connection with the first and / or second line of weakness of the front and back. Bag according to one of the preceding claims, further comprising first and / or second side wall elements between the first margins of front and back or the second side edges of front and back. Bag according to claim 19, characterized that the side wall elements represent gussets, in particular extend from the bottom end of the front and back. Bag according to claim 20, characterized the side walls comprise at least two gussets. Bag according to one of claims 19 to 21, characterized in that the first side wall element via at least one tenth line of weakness, in particular perforation, which is in operative connection with the third and / or fourth and / or fifth or sixth line of weakness from the front or rear side and / or that the second side wall element via at least one eleventh weakening line, in particular perforation seam, has, which is in operative connection with the third and / or fourth and / or fifth or sixth line of weakness from front or back. Bag according to one of claims 19 to 22, characterized in that the first and / or second weakening lines run from the front or back in the area, the in each folded state of the inner fold of the first side wall element, in particular the side fold of the first side wall element, to the inner fold of the second Side wall element, in particular the side fold of the second side wall element extends. Bag according to one of the preceding claims, characterized in that the bag is substantially integral is trained. Bag according to one of the preceding claims, characterized in that the front and / or the back a variety of, especially breathable, openings exhibit. Method for producing a bag according to of the preceding claims, comprising the steps: a) Provision of an endless web of bag material with opposite first and second margins, b) Attaching at least one line of weakness, in particular Perforation seam, along the longitudinal direction of the continuous web spaced from the first and second margins, c) optionally folding over at least one side edge, in particular the first and second marginal margins, in the direction of Center longitudinal axis of the continuous web under training at least a gusset, d) separating separate segments from the Endless web by means of cutting or punching, e) Fold each other open of first and second sections of the separated segment below Formation of an Envelope fold, which is located between the opposite extends first and second side edges, in particular perpendicular to these runs, and under training of Front and back of the bag, and f) Fasten the adjacent first and second side edges from front or back. Method for producing a bag according to of claims 1 to 25, comprising the steps: a) Provision of an endless web of bag material with opposite first and second margins, b) spaced attachment of dividing lines, in particular perforation seams, along the transverse orientation of the continuous web, at least in sections extend from the first side edge to the second side edge, c) Attaching at least one line of weakness, in particular Perforation seam, along the longitudinal direction of the continuous web spaced from the first and second margins, d) optionally folding at least one side edge in the direction the central longitudinal axis of the endless web under training at least a gusset, e) separating separate segments from the Continuous web along the transverse dividing lines, in particular by tensile stress, f) folding on each other first and second sections of the separated segment to form a Envelope fold, which is located between the opposite extends first and second side edges, in particular perpendicular to these runs, and under training of Front and back of the bag, and g) Attach the adjacent first and second side edges from front or back. Method according to Claim 27, characterized that method step c) precedes method step b) or the process steps b) and c) substantially simultaneously be made. Method for producing a bag ge according to any one of claims 1 to 25, comprising the steps of: a) providing an endless web of bag material, b) attaching at least a first and at least a second, spaced from the first line of weakness, in particular perforated seam, respectively along the longitudinal direction of the endless web spaced from the itself c) spaced mounting of dividing lines, in particular perforations, along the transverse orientation of the continuous web extending at least in sections from the first side edge to the second side edge; d) forming a hose from the endless web by at least partially connecting the first and second E) optionally forming opposing first and second gussets, f) separating separate segments from the continuous web along the transverse dividing lines, in particular by tension stress, g) forming a closed bottom area at the bottom end of the front and back. Method according to claim 29, characterized that the first and second weakening lines are spaced in such a way be attached in the finished bag on the Front or on the back substantially rectified and wherein the substantially rectified lines of weakness of front and back in particular in each case at least in sections, especially for the most part, about himself overlapping, opposing areas extend from the front or back. A method according to claim 29 or 30, characterized that the first and the second weakening line are spaced in such a way be attached to each other on the continuous web, that this in the finished bag on the front and on the back are arranged so that they are substantially to each other Are to bring investment and are in particular on the same line. Use of the bag according to a of claims 1 to 25 for the packaging or Inclusion of food, in particular un-or pre-baked Baked goods, ready baked goods, pizza, pizza noodles, pancakes, Crepes, burgers, potato pancakes, sandwiches and the like.