The invention relates to a receptacle, in particular to a flexible bag made of paper, having a front part, a rear part and a bottom which is closed by a bottom unit, and having an opening which is located opposite the bottom.
In addition, the invention relates to a device for producing receptacles, wherein the device comprises the following features:
In addition, the invention relates to a method for producing the named receptacles.
DE 10 2008 017 726 makes known producing paper bags of the above-mentioned type, the bag comprising a front part, a rear part and a bottom which is closed. An opening is situated on the opposite side of the bottom such that objects are able to be moved through the opening into the bag. It has been shown in a disadvantageous manner that in some applications the edge of the opening can be realized with sharp edges such that the user of the paper bags can cut himself on the hand, for example, on the named edge.
It is the object of the present invention to avoid the above-mentioned disadvantages, in particular to create a receptacle as well as a device for producing said receptacles, it preferably not being possible for the user of said receptacles to cut himself on the hand at the edge of the receptacle opening.
The object of the present invention, according to an embodiment, is achieved by a receptacle, in particular a flexible bag made from paper, having a front part, a rear part and a bottom which is closed by a bottom unit, and having an opening which is located opposite the bottom, wherein the bottom unit comprises a bottom portion of the front part and a bottom portion of the rear part, wherein the bottom portion of the rear part is realized in a shortened manner in relation to the bottom portion of the front part such that the bottom portion of the front part is fastened directly on the rear part as a result of turning the bottom unit along a fold line, the opening is formed by a peripheral edge which extends at a height of the front part and of the rear part and which is frayed at least in part, as a result of which the risk of injury on the edge is reduced. The peripheral edge is the same height on the front part and on the rear part. The frayed edge is realized in an obtuse manner for the user of such receptacles without there being a risk of cutting on the opening of the receptacle. In an advantageous manner, the receptacle is realized from paper and can be used in the form of a flexible bag in the most varied of manners. The frayed edge can be realized according to the invention in a microscopically felt-like manner, as a result of which a relatively “soft” edge is created.
According to the invention, the edge can be realized in the manner of a perforation, this means that said edge is created on the receptacle, for example, by means of a tearing operation. The tearing operation can promote the frayed edge according to the invention.
The receptacle according to the invention is advantageously realized with a folding bottom where the bottom portion of the rear part is realized in a shortened manner in relation to the bottom portion of the front part such that the bottom portion of the front part is fastened, in particular glued, directly on the rear part as a result of turning or folding the bottom unit along the fold line. In an advantageous manner, the bottom portion of the rear part and the bottom portion of the front part can comprise a frayed edge. From the viewpoint of the production process, it makes sense to use just one perforation device in order to have the frayed edge of the opening created and to process the bottom unit with its bottom portions using the same perforation device.
The receptacle can be realized as a folding bottom bag where the front part comprises an outside and an inside and the rear part comprises an outside and an inside, wherein the inside of the front part faces the inside of the rear part, wherein the bottom portion of the front part comprises an inside surface and an outside surface and the bottom portion of the rear part comprises an inside surface and an outside surface, wherein the inside surface of the bottom portion of the front part is glued to the outside of the rear part.
In addition, it can be provided according to the invention that at least one side folding extends between the front part and the rear part. The side folding can comprise one or several side folds. In an advantageous manner, the side folding extends from the opening proceeding in the direction of the bottom. A function of the side folding is that the cavity inside the receptacle is able to be reliably enlarged by the front part and the rear part being pressed away from one another. In the non-use state of the receptacle, the front part and the rear part can lie one on top of the other, the side folds lying between said two parts.
In a measure which improves the invention, the edge of the opening can be formed at least in part by a front part edge of the front part and a rear part edge of the rear part, wherein the front part edge and the rear part edge are at one height. The arrangement of the front part edge and of the rear part edge at one height promotes the fact that the user is easily able to grasp the receptacle at the edge of the opening and consequently is able to transport the receptacle with its contents in a satisfactory manner. The front part edge and the rear part edge are aligned with one another at one height, both the front part edge and the rear part edge being frayed according to the invention.
The invention includes that the front part and/or the rear part is realized at least in part from a transparent material. The transparent material enables the user to be able to look at least in part into the cavity of the receptacle.
It is equally conceivable that a handle opening is realized on the front part and on the rear part, wherein the handle opening is, for example, punched out. The handle opening can also be created on the receptacle by means of alternative mechanisms or methods. For example, the handle opening can be realized on the receptacle by means of a laser. The handle opening serves as holding means for the user in order to be able to hold and transport the receptacle filled with contents in a reliable manner at the handle opening. In an advantageous manner it can be provided that in the region of the handle opening the inside of the front part and the inside of the rear part comprise a reinforcement strip. So that the handle opening is realized so as to have a long service life, the reinforcement strips effectively prevent premature tearing of the receptacle at the handle opening, which can be brought about, for example, as a result of there being too much weight to be carried inside the cavity of the receptacle. The reinforced strips are advantageously arranged on the inside of the receptacle so that they are not visible to the user. The geometry of the handle opening can be realized in a round or oval manner or as a C-hole opening.
In a further development of the invention, the outside surface of the bottom portion of the front part can serve as an information field. Consequently, part of the bottom unit can serve as an information surface, which can comprise letters, symbols and/or numbers.
In addition, the object of the present invention is achieved by a device according to embodiments of the invention as discussed below. Possible developments of the device are realized in other embodiments of the invention as further discussed below.
The device according to the invention serves for producing receptacles, in particular flexible bags made of paper. The receptacle is realized according to the invention with a front part, a rear part, a bottom which is closed by a bottom unit, as well as an opening which is located opposite the bottom and is defined by a peripheral edge, wherein the edge is formed by a front part edge of the front part and a rear part edge of the rear part. In addition, the device according to the invention comprises the following features:
According to the invention, the perforation device is realized in such a manner that a first perforation line can be introduced to create the bottom and a second perforation line, which is at a spacing from the first perforation line, can be introduced for creating the frayed edge, wherein the front part edge and the rear part edge are at one height.
A substantial core of the invention is that the perforation device is able to create at least two perforation lines on the material web. For example, the perforation lines can be introduced into the material web by means of cutting elements, in particular cutters, the perforation device according to the invention being able to apply two different contours of perforation lines on the material web. It must be mentioned at this point that the perforation device, in an advantageous manner, does not cut through the material web, but provides the material web with weakening cuts in the form of perforations, along which perforation lines the tube to be formed subsequently tears to separate out into tube portions. The perforation lines for the subsequent tearing off of the material portions of tube portions are also introduced into the material web in the perforation device. For example, it can be provided in a possible embodiment of the invention that the perforation device is situated on a rotating axis, in particular a roller, along which the material web is also guided. A further essential core of the invention is that the device according to the invention comprises a separating device for separating off individual tube portions and individual material portions of tube portions which is incorporated in the device according to the invention. This means that one and the same device can carry out at least two different separations of tube portions and material portions from the material web. Consequently, the material web can be processed in such a manner that both a receptacle with a folding bottom can be produced and also a receptacle with a “smooth” edge where the front part edge and the rear part edge are at one height. In addition, the edge of the opening is frayed such that a risk of injury to the user is reduced.
According to the invention, it can be provided that the separating device comprises a first and a second separating station, wherein in the first separating station individual tube portions can be separated off along the first perforation line, and in the second separating station material portions of tube portions can be separated off along the second perforation line. In this connection, the separating device serves, on the one hand, for separating the tube portions into singles. This is realized in an advantageous manner by the first separating station which separates or tears the individual tube portions off along the first perforation line. The second separating station removes material portions of the respective tube portions on the opposite side of the bottom in order to obtain a “smooth” edge at the opening of the receptacle. It must be mentioned in this context that a device for removing the material portions can be incorporated in addition in the separating device according to the invention. It is the object of said device to remove the separated material portions of the second separating station reliably from the transport path of the tube portions or bags such that there are no resultant inaccessibilities in the production of the receptacles. Said device can include suction devices, grabs, needles or a combination of suction devices and grabs and needles.
It can be provided according to the invention that the first separating station is arranged upstream of the bottom folding device and the second separating station is arranged downstream of the bottom folding device. This means that initially individual tube portions are separated off along the first perforation line in a first translation. Once the bottom has been formed in the bottom folding device, the material portions of the respective tube portions are separated off along the second perforation line in the second separating station which is connected downstream. Depending on the application, however, it can be sensible to provide the first and second separating station together upstream of the bottom folding device, as a result of which the device according to the invention for producing receptacles is able to be realized in a more compact manner.
In addition, it can be provided that a punching device is provided which punches a handle opening at the same time in the front part and the rear part, wherein the punching device is incorporated in the tube forming device or is arranged downstream of the tube forming device. In order to reinforce the handle opening, it can be sensible to attach reinforcement strips at defined points of the material web. In an advantageous manner, said reinforcement strips are attached in the region of the handle opening on the inside of the front part and on the inside of the rear part. The attaching of the reinforcement strips can be effected by a device which is provided upstream of the punching device. In an advantageous manner the reinforcement strip encloses the handle opening. It is conceivable for the punching device to punch out part of the reinforcement strip, at least in part, at the same time as it punches out the handle opening.
The object of the present invention is additionally achieved by a method according to the invention for producing receptacles, in particular flexible bags made of paper, wherein the receptacle is realized with a front part, a rear part, a bottom which is closed by a bottom unit, as well as an opening which is located opposite the bottom and is defined by a peripheral edge, wherein the edge is formed by a front part edge of the front part and a rear part edge of the rear part. In this connection, said method according to the invention includes the following steps:
wherein in step A) the perforation device forms a first perforation line for creating the bottom and a second perforation line, which is at a spacing from the first perforation line, for creating a frayed edge, wherein the front part edge and the rear part edge are at one height.
Possible embodiments are addressed in the present document.
It is particularly advantageous that two different perforation lines with different contours are introduced into the material web in the perforation device. In addition, during the production method perforations are introduced into the material web several times, the contour of the first perforation line differing substantially from the contour of the second perforation line. A receptacle that comprises a frayed edge in the region of the opening is produced by the second perforation line, the front part edge and the rear part edge being at one height. The advantages of a receptacle of this type have already been depicted such that at this point reference is simply made to what has been already said.
In an advantageous manner, the first perforation line comprises at least two regions which extend offset, at a spacing from and parallel to one another. The two regions on the material web serve for the purpose of being able to produce a folding bottom on the receptacle, a reliably closed bottom unit being created. A bottom unit with a bottom portion of the front part and a bottom portion of the rear part can be created by means of the first perforation line, the bottom portion of the rear part being realized in a shortened manner in relation to the bottom portion of the front part such that the bottom portion of the front part can be fastened directly to the rear part by folding over the bottom unit along a fold line. In an advantageous manner, the front part can comprise an outside and an inside and the rear part can comprise an outside and an inside, wherein the inside of the front part faces the inside of the rear part, wherein the bottom portion of the front part comprises an inside surface and an outside surface and the bottom portion of the rear part comprises an inside surface and an outside surface, wherein the inside surface of the bottom portion of the front part is glued to the rear part.
So that a “smooth” edge is created in the region of the opening of the receptacle, the second perforation line is realized as a geometric straight line. In an advantageous manner, the first region of the first perforation line can be at a distance X to the adjacent second perforation line which is approximately within the range of 1 mm≦X ≦17 mm, in particular which is approximately within the range of 8 mm≦X≦11 mm. As an alternative to this and/or in addition to it, the second region of the first perforation line can be at a greater spacing Y to the adjacent second perforation line than the distance X which exists between the first region of the first perforation line and the adjacent second perforation line. In this connection, the separating device is realized in such a manner that during the separating-off process it is able to engage at the point of the material web which lies between the first perforation line and the second perforation line. The separating device can also include, for example, several pairs of rollers, two pairs of rollers being associated with the first separating station and two pairs of roller being associated with the second separating station. During the separating operation, the speed of one pair of rollers can be at least temporarily different to the speed of its adjacent pair of rollers, as a result of which the respective tube portion or the material portion of a tube portion is able to be torn off.
The above-mentioned method steps A), B), C) and D) can be carried out according to the invention in a sequential manner. It is equally conceivable for steps A), B), C) and D) to overlap at least in part.
It is additionally conceivable for the separating device to comprise a first separating station and a second separating station, wherein in a step C1) in the first separating station individual tube portions are separated off along the first perforation line, and in a step C2) in the second separating station material portions of tube portions are separated off along the second perforation line. Consequently, included in the invention is that the steps C1) and C2) run during the step C). It can be provided as an alternative that the step C1) runs during the step C) and the step C2) runs after the step D) .
In a further measure improving the invention, it is conceivable that during the step B) or after the step B), a handle opening is punched in the front part and the rear part, wherein in particular prior to or during the step A) or the step B) reinforcement strips are attached in the region of the handle opening.
In addition, the method according to the invention is suitable to produce receptacles according to the description in the present document. In addition, the device according to the invention according to one of embodiments as discussed in the present document is suitable to carry out the method just described.
Further advantages, features and details of the invention are produced from the following description in which, with reference to the drawings, several exemplary embodiment of the invention are described in detail. In this case, the features mentioned in the claims and in the description can be fundamental to the invention in each case on their own or in arbitrary combination. The drawings are as follows:
Once then the material web 11 has been provided with the perforation lines 60, 70 according to
Said formed tube 12 leaves the tube forming device 92, the tube 12 still being an endless tube 12 in said stage. The tube 12 is then supplied to a separating device 82 which separates the tube 12 according to the perforation lines 60, 70. According to
According to
The receptacle 10 comprises an opening 1 which is located opposite the bottom 50, is formed by a peripheral edge 2 and is frayed on account of the perforation line 70, as a result of which the risk of injury on the edge 2 is reduced. According to
The bottom portion 130 of the rear part 30 and the bottom portion 120 of the front part 20 also comprise a frayed edge 123, 133.
According to
By means of a broken line,
So that the handle opening 4 obtains greater stability, the receptacle 10 according to
The outside surface 121 of the bottom portion 120 of the front part 20 can serve as an information field or information surface which is indicated schematically in
According to
The edge 2 of the opening 1 is formed by a front part edge 23 of the front part 20 and a rear part edge 33 of the rear part 30 which is shown in
According to
In this connection, the first perforation line 60 comprises at least two regions 61, 62 which extend offset, at a spacing from and parallel to one another, which is shown in
The above-mentioned steps A) to D) can be carried out in a sequential manner. It is equally conceivable for the steps to be able to overlap at least in part in a further exemplary embodiment. As
The strip element 85, which is mounted on the shaft 88 according to
As is indicated in
In addition, the strip element 85 includes several openings 94 which serve for fastening the strip element 85 on the rotating shaft 88.
Number | Date | Country | Kind |
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20 2012 100 652.9 | Feb 2012 | DE | national |
10 2012 104 619.0 | May 2012 | DE | national |
This application is a divisional of commonly owned U.S. patent application Ser. No. 14/381,566 filed on Aug. 27, 2014, which is a U.S. National Phase application, under 35 U.S.C. §371, of International Application No. PCT/EP2013/051712, with an international filing date of Jan. 30, 2013, and claims benefit of German Application No. 20 2012 100 652.9 filed on Feb. 27, 2012 and German Application No. 10 2012 104 619.0 filed on May 29, 2012, which are hereby incorporated by reference for all purposes.
Number | Date | Country | |
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Parent | 14381566 | Aug 2014 | US |
Child | 15623297 | US |