MXPA96003397A - Evolutionary containers for cylindrical windings and simila - Google Patents

Abstract

The present invention relates to a package for a substantially cylindrical food product, characterized in that it comprises: a central elongated strip having a plurality of bent lines to define a series of interconnected panels including a central panel generally arranged centrally throughout of the strip with at least one of the panels extending in series from each end edge of the central panel to one of the most extreme panels: a central flap connected to each side edge of the central panel; at least some of the side edges of the other panels, the panels are bent together where the most extreme panels are arranged cooperatively to define a polygonal cross-section for the packaging, the closing flaps and the central flaps are bent with respect to the panels to close the packaging, and each of the central flaps includes a means for fining an outer portion of the central flap wherein the outer portion is free of the closing flaps and a means for allowing the outward bending of the outer portions to access the food product contained within the package.

Description

EVOLUTIONARY CONTAINERS FOR CYLINDRICAL AND SIMILAR SANDING The present invention relates to a basic version, with a first packaging or flat-pack assembly of quick closure (4 to 5 seconds approximately), for cylindrical sandwiches of the hamburger type (and in general for all food somewhat compact present in the form cylindrical and intended to be consumed in its packaging); the concept of this basic version allows a modality of a second packaging in two half shells, manually preformed to the ultra fast closing assembly (1 to 2 seconds approximately) once preformed, and of limited stacking; and finally in a second embodiment a packaging also in two shell halves, industrially preformable directly in stacking position, then it can be inverted to its filling, mountable and closing position manually in record time, specifically intended for a professional use (during peak hours in fast food restaurants in particular). The most popular cylindrical sandwich is the hamburger, it is from the application of the hamburger packaging that the descriptions will be made since the packaging of a hamburger is very delicate because it is a soft sandwich, open, of superimposed halves, of the which sauce can be spilled and grease debris fall and stain the consumer's clothes, if the hamburger is not systematically kept under its packaging during all its consumption. There are two main types of packaging known for hamburgers: Some are articulated cases in the form of double barqueta in general square section with a closure system by force. Currently, for reasons of ecology, they are rather made of lightweight flat or micro-corrugated cardboard; The formwork of these trays is done by automatic gluing. The hamburger is placed on a plate, in the lower rack, and the consumer must adjust it vertically, so he needs to delicately pass the index finger and / or middle finger of one hand between the hamburger and the bottom of the lower tray to straighten the the same with the help of the thumb, this in a very uncomfortable movement, since it is very uncomfortable to have the same lower barqueta with the other hand to protect from stains during consumption, because the upper barqueta, joined by the articulation of the lower barqueta can hinder the face during the act of consumption. It is also necessary to add that children tend to have a tendency to consume the sandwich outside the barqueta and thus they stain more frequently.

The others are simply very thin rectangular sheets of paper, which wrap around the hamburger as any flat cylindrical object is wrapped, folding after folding the protruding edges below the object to be packed. On the other hand, there is a very thin, longitudinally folded packaging and from which the folds are held at their ends by side welding, the paper is provided with a layer of polyethylene with the use of hot glue that allows the welds. This manual packing is very difficult to adjust, and very unsightly once in place or has the expected success. According to another method, described in the North American patent 418? 054, a cylindrical packing case for round sandwiches is constituted by two half shells surrounding the sandwich, each one on a semi-perimeter and joined together according to a single joint parallel to each other. a generator of the cylinder. In closed position, each lid or shell is brought into contact from edge to edge with the other. After the packing operation, the sandwich is placed vertically in the lower half on which the top part is folded. When consumed, the sandwich is held in the lower half that can either tear radially or be bent outwards laterally according to the articulation in the cylinder generatrix. This packaging is obtained by molding polyethylene foam and has several drawbacks: since the peripheral and lateral walls are perpendicular to each other and molded, the packages are not stackable; the sandwich is too close to the bottom of a lid, when the other half is in view of the consumer, which is very uncomfortable, and all the more so in the last phase of consumption, as the radial separation of the half as well as the lateral separations , planned to be able to have access to the mouth in the last portion of the sandwich, are annoyances because it is necessary to pull hard on the packaging that can tear abruptly with the risk of dislocating the sandwich and making the food leftovers fall on the consumer or his neighbors. As is well known, this packaging has never been used for these reasons. Differently, the object of US Pat. No. 4,494,785 is concerned with a pre-cut and pre-folded flexible paper napkin intended to partially coat a cylindrical sandwich in order to have it between the fingers without contacting the food. It consists of a band that partially surrounds the periphery of the sandwich and two series of parallel bends in pairs, intended to be interspersed between the fingers and respectively above and below the sandwich. This napkin does not reside around the sandwich but is held in the hand and does not allow to effectively retain the sauce or fatty waste escaping from the sandwich during consumption or to ensure thermal insulation of the hot sandwich. The very old patent DE 336795 describes a square rectangular parallelepiped case with a cross-bottom closure obtained by the diagonal fold of four bottom fields; This case is accessible below the crimp, especially the container of powder or grain products and no specific feature to eat a round sandwich in its container, also as a case can serve many different uses. It is described in the North American patent 2443531 a cubic hermetic box of rather thick cardboard, specifically designed to receive a cube of glacial cream to transport it in the best possible conditions (temperature above all) between the place of purchase and the place of consumption. The cardboard sheet is divided into equal square areas according to three longitudinal bands delimited by two parallel folding axes and five transverse bands delimited by four fold axes perpendicular to the preceding ones. For the consumption of its contents, the case is placed on a horizontal table and redeployed in the plane of the table so that the ice rests on the central square area where it can be trimmed and served. If it is admitted to the limit that this container can receive in a precise application a hamburger, it is necessary to verify that it is not known for the hamburger to be consumed in its packaging. The round case disclosed in the US patent 2224504 is formed of a cylinder from a sheet of material not specified comprising a central part and side extensions of which the length is precisely that of half the diameter of the product to be packed. It is the subject of these extensions, which are removed by both parts of the openings of the central cylinder according to the fan-shaped folds that come to form the same and pack a product compatible with this type of packaging that can be opened from two sides. The obtained pseudo-case has no useful feature for the packaging of a hamburger and even less for the consumption of a hamburger from its packaging, because it does not have a stable closed bottom.

It is intended as it is known to pack luxury soap or other perfumery or gifts, which preferably have two almost parallel planes. The cardboard container described in US Pat. No. 2295508 forms a universal universal assembly and closure case intended to contain already large volumes, but has the result of the use of any classic non-specific case, which on the other hand would be desired by its inventor who used it for more or less large use as described in the text of your patent. The container of the North American patent 3031124 presents a manual folding system very complicated and in no case susceptible of preforming in industrial series; if the aesthetic result is strongly seductive, this bag-shaped packaging does not present any precise application, which on the other hand is still desired by its inventor. In another consideration if this packaging had presented a specific interest for the consumption of a hamburger or one might think that it would have in the time to know "of 1959. The British patent 945399 described in 1963 a procedure of wrapping different articles by a folded sheet , of film or impregnated with polyethylene in particular, but also of aluminum, and especially the means for using the film material for heat sealing the organized folds to close the package by thermoplastic apposition of a rigid label made of a compatible material , intended to present a trademark externally, is really far from the concern of specifically packing a hamburger.It follows from all the analysis of previous packagings and other existing food packaging, that if certain of them are usable for a hamburger, none includes the articulated cases and the pap Currently used film, neither present nor intend to present on the other hand the set of specificity necessary for the simple and practical consumption of a hamburger or other compact food cylindrical in its packaging. The following presentation of the invention demonstrates that it uses different means for different functions and results both in relation to the known packaging and currently used for hamburgers, which in relation to the teaching disclosed by the patents analyzed above, which do not suggest neither individually nor in association the object of the invention and consequently, the relevant invention in particular in its third version of a technical domain in part, the skilled in the art could not be tempted to seek and retain the teaching of such patents for carrying out the invention. Figures 1 to 20 present the main originalities of the invention; in these figures, the symmetrical parts will now be represented by the same symbols (figures or letters). Figure 1 shows, in sectional view, the central concept of the invention, voluntarily presents a view of the realization of a packaging of regular hexagonal section, on the one hand for the best possible reading of the figures and on the other hand because it is of one of the preferred embodiments of the invention. The material of the thin sheet used could preferably be thin cardboard, or micro-ribbed, with anti-fat treatment in it. thickness or at least on its internal face, completely recyclable, and of a weight per square meter comprised between 180 and 250 grams. The packaging in this basic version is obtained by cutting or dividing an appropriate surface (limiting the slopes as best as possible) with the help of a flat cutting tool usable under pressure. This surface looks like an elongated rectangle. It can also be obtained from a band of cardboard cut out in the unwinding.

The principles of the fold are obtained by means of a non-cutting tool integral with the cutting tool, and capable of printing on each of the cardboard faces, a deformation according to different lines that constitute the edges of the folds. The edges of the folds shown in FIG. 1 by dashes of solid lines (a) define groups of protruding folds. The edges of the folds shown in Figure 1 by broken lines (b) define incoming folds or support folds. Figure 2 again takes figure 1 after a first fold. It shows that two bands A and B are arranged in symmetry in relation to a C band to form the package. On this band C, of which the length (e) corresponds to the thickness of the hamburger to be packaged (s), an internal face (1) intended to receive the hamburger vertically is represented in the horizontal. This face is the articulation face of the system; the enclosing faces (2), (3), (4), (5), (6) and (7) are of the same dimensions as the face (1) in this regular hexagonal presentation. Once the burger is put in place on the support or base face, it is held in this vertical position by turning it with the thumb and forefinger of one hand the two opposite symmetrical faces (f) (on the A and B bands) Figure 1. The height (r) of the bands A and B (and of which the face (f) is preferably in this basic version equivalent to the radius of the hamburger to be packed). With the other hand placed under the packaging when lifting the integral faces (7), (6) and (5) figure 1, naturally the incoming folds of type (b) are formed towards the inside of the package in symmetry on each band A and B and lean on the hamburger when closing it. The function of the folds (b) is essential in the present. The lateral and symmetrical faces (8) of a height (h) slightly greater than (r) come to consolidate and establish this narrowing by penetrating its projecting miter (o) between the face (f) and the burger, which constitutes the first stage of the packaging act by two thirds (approximately) of the volume of the hamburger. The act of packing the remaining thirds is done keeping laterally between the thumb and forefinger of a hand the fixed structure obtained, delimited by the faces (1), (5), (6) and (7) consolidated among them, and lifting with the other hand the faces (2), (3) and (4) figure 3, which puts in shape and place the corresponding incoming lateral folds, in support against the hamburger, and what, in limit of the envelope , bring the face (4) to completely cover the face (7) figure 4 to obtain an absolutely compact set that does not rest except to close. 5 Several solutions are then considered: The one that allows packing more immediately, is to fold the symmetrical triangles (9) of the faces (19) located on both sides of the face (4) respectively '/ behind the folds (t) of the faces (8); Figure 4 shows in broken lines (10) the bend of the triangle (9) behind the fold (t) of a face (8). The packing and closing operation is carried out without the face (1) having ever left its initial position on the horizontal plane or the act of packaging, and the hamburger rests completely motionless for 4 to 5 seconds of the duration of the operation, before being unloaded to the plate of its packaging and on its base to preserve its integrity. Figures 1 to 20 show a structure of packing of regular hexagonal section, the diameter of the hamburger is approximately that of the circle inscribed in the hexagon. Packaging structures of square or pentagonal section or any other section of regular polygons preferably are possible.

However, the packaging of regular hexagonal section is optimal because the loss of volume in its six angles of 120 degrees is not important, the length of the cardboard useful for its realization is economical in relation to the packagings of pentagonal and square section which they will be described later, finally, like them, it presents a number of perfectly manageable lateral folds for its putting in shape and a good compactness. On the other hand, the hexagonal packaging and the octagonal packaging offer a pleasant aesthetic. From the octagonal section and up to the geometrical limit of the circular section, in this basic concept of the invention, disadvantages arise above all due to the difficulty of arranging support folds and projecting folds in a very large number. Figure 5 shows an adhesive tablet (14) adhered to reinforce the closure by the entrance fold (10). Figure 6 shows an adhesive tablet (14) adhered to its closure, the fold (9) is here completely removed from the paper cut. As discussed above, the packaging that is organized in symmetry around the articulation face (1) implies that the lateral faces (f) in symmetry in relation to the face (1) are each delimited by two incoming folds of the type ( b) and two projecting folds of type (a) designated by (p) on figure 1 and figure 7. Once the package is formed, the two folds (p) can be used as female fixing elements for a form interesting closing. In figure 7 the face (4) and the faces (15) in symmetry in relation to (4) shows trimmed belays (16) having joints (w) that are joined to the faces (15). These fastenings, male closing elements can be expelled towards the outside of the packaging, (figure 8), folded over their joints (w) in such a way that the points of each belay can close the package when passing behind the external folds (p. ) symmetrical between them in relation to the face (f). This closure represented by figure 9, is simple to make and is of the same efficiency. Figure 10 shows a long miter (19) cut on the face (18) in articulation on this face, and that is hooked on (20) behind the external fold (t) of the face (8). This coupling is facilitated by a cut (21) that allows the closure as shown in Figure 11. This closure by miter is the fastest to implement, its robustness can be ensured by optimizing the miter (19). It is the preferred closure of the invention in this basic version in its different polygonal sections of preference. Likewise, for the closure also shown in FIG. 10 by the miter (23) cut on the face (22), articulated on this face and hooked on (24) behind the outer fold (7) of the face (8) , the hooking is facilitated by a specific cutout (25) that allows the closure as shown in figure 12. The difference between the closure of figure 11 and that of figure 12 lies only in the fact that the miter (23) is inside the face (22) and not outside as in figure 11. The miter (23) is better integrated to the aesthetics of the packaging but its placement, while it is easy, it is less immediate than that of the miter (19) that keeps the preference due to its better closing time. Figure 2 indicates on both sides of the face (1), starting from the faces (f) two cuts (12) symmetrical in relation to (f) and retained in the flange of the bands A and B by means of stopping points (13). ). When the stopping points (13) are caused to be pulled by pulling the faces (f) towards the outside of the package, two trimmed symmetrical zones (11) are then delimited and maintained in the outer joint on the faces (f).

At the moment of opening the package of figure 13 and that the stopping points are made to jump, the zones (11) in the form of lips move apart (even divide) to allow a perfect comfort of consumption, the articulation is parallel and close to the fold between (f) and (1). In addition, for this comfort to be total, all you have to do is press the thumb and index of each hand the bands A and B of both parts of the hamburger, so that it is held fixedly of the four fingers on the articulation face (1) during a bite of the interior. As you start to eat an almost whole hamburger, or you finish eating, you can deploy so much more packaging for better comfort, for finally after eating the hamburger, wrinkle and throw in the place where it should be recovered for recycling (this place is materialized in the establishments of "fast food" in general). Although a flat generic package and its folding system have been described herein with a certain number of variables that allow diverse closures, easy to make, all quite fast, with a preference over the miter (19) of Figure 10, more functional Real-time assembly. What is proposed now, is that starting from this basic version of packaging initially of plate, arrive in a first evolution to a second package that, once put into shape manually is particularly quick to assemble and close. It is convenient for this in concealed time (or preferably lost time) to prepare manually from a package as defined in plate by figure 14, two half preformed peels, figure 15, that once the hamburger is placed in its place, on the articulation face (1) (vertically if the packaging is opened in horizontal balance towards the top, or horizontally if the packaging is lying on a plane and open to the horizontal) it could be folded on top of one another covered of the face (4) on the face (7) or vice versa. In comparison with figure 1, figure 14 is in total symmetry in relation to its central band including faces 1 to 7 and to the band perpendicular to it including face (1), faces (f) and lips (11) ) in articulation on (f). It can be seen in figure 15 that the faces have been truncated from the triangle (9) figure 1 and do not include any crease edge. On the contrary, the faces (27) comprise two projecting fold edges (u) and two fold edges that enter to form the right triangles (28) and (29).

Figure 15 shows, laterally, as it is possible from the folds of Figure 14 to obtain the formation of two symmetrical half shells represented by the external apparent faces (26), (27) and (30). The external face (27) hides or covers the two folds (28) and (29) adapted one on the other behind the face (27) inside the package, in such a way that a simple fastening in the area (31) It allows to close the set inside the outer faces (26), (27) and (30) to obtain a perfectly formed and resistant half shell. You get the other half shell in the same way. The fastening can be classic, but taking into account the application, it is better to consider a fastening by perforation / stamping that eliminates any metal fastener and can integrate a logo or a stamped brand. This type of fastening can be done by a commercially known apparatus. Once the set consisting of two half shells is obtained, the hamburger is quickly introduced against the articulation face (1) and closed by bringing the two half shells that come to be folded together under light pressure from both hands. the other to counteract the effect of tension caused by the putting in place of the outer folds (movable) on the internal (fixed) folds around the burger on both sides of the faces (f). No other closure is generally necessary if the lightweight cardboard is well chosen in the thickness and hue useful for a preservation of the temperature even in humidity if it is of nature that softens the packaging and then harms its closure. Figure 16 represents figure 15 after the depression of a half shell. For the rest, in the regular hexagonal configuration, the packings of preformed half shells, figure , they are stackable. However, in the present the stacking presents two major drawbacks: - On the one hand • It must be obtained in vertical pressure, because these packages to be horizontally superimposed on each other have two symmetrical concavities constituted by the two half shells that can be cause deformation of the packaging below. - On the other hand and consequently, the amount of stackable units is very unimportant because in this double concave and almost vertical configuration the saturation is quickly reached. Consequently, in order to eliminate the aforesaid problems and mainly to obtain a limited stack of the packages, it is convenient, as shown in FIG. 17, to derive from Figure 14 a division that allows industrially the realization of a third optimized double-use package. , which could be easily facilitated by the fact that this double barquette already has four oblique faces opposite each other radially in pairs, and that the bottoms are narrower than the openings. This embodiment, evolution of the preceding manual clamping formula is by far the most important of the invention to the plane of the large series application. In the industrial manufacture of these last double bar-knives of the invention, the sides (j) of (32) and (33) of the divisions of figure 17 (which supply in series an automatic machine called "barquito" well known to professionals ), they adhere edge to edge on the internal face (27) of the packaging according to the height (k) of (27), preferably so that the internal side faces of the shells are completely upholstered by the faces produced in the gluing. They are formed thanks to the respect of some technical requirements that will be described later, two half shells that are solidary and symmetrical in relation to the face (1) which becomes the upper plane of the set (figure 18 and 18 bis), the two half shells (or bars) joined together in the articulation with the articulation face (1) lie respectively, horizontally, on the outer planes of its two faces (6) and ( 3) . Figure 18 shows, in a bottom view, the set constituted by the two bars arranged in symmetry of the face (1) contiguous to each of the faces (34) (extrapolated from the faces (f) of figures 1 and 2) symmetrical in relation thereto, each of these faces (34) has a lip (11), also extrapolated from the figures of the preceding sheets, which can be moved inside or outside the package according to a slot or a perforation ( m) horizontally located slightly below the base of the packaging, the disappearance of two lips (11) opposite to the outside is foreseen to facilitate the complete consumption of the sandwich (S) It is convenient to explain now according to what technical demands the barquetaje becomes possible in series on a machine that allows to obtain the result shown in figure 18 bis of a double barqueta that rests in the horizontal on its faces (3) and (6) and that has the face (1) as upper plane: - The first is useful reduction of the dimension of the projecting folds (a) and recesses (b) that delimit after their reduction two small triangles (v) to the two extremities of each joint between the face (1) and (2) and the face (1) ) and (5), the small folds (b) are two to two in the extension of each of the two folds-joints mentioned above. This reduction in the size of the folds (a) and (b) is necessary to avoid tearing by deformation of the weak sheet of cardboard at the time of formation by gluing the barqueta to the press in the machine what would arrive if ( a) and (b) are maintained at their original dimension (figure 1). The stacking is made possible in the present by means of the application of tension by means of gluing of barquetaje of the small folds (a) which causes a stable elastic deformation, and rounded to the outside, the corners of the half shells along the folds between the face (5) and the faces (33) contiguous to (5) and along the folds between the face (2) and the faces (33) contiguous to (2) (figure 18). In the framework of a manufacture of a barqueta with a well-defined carton, the optimum length of a fold (a) is that which makes it possible to maintain the stable elastic deformation of the barquete of two sides adjacent to its articulation fold with the face (1). ) without breaking the cardboard at the level of the meeting points of the outer ends of the folds (a) with the outer edges of the flap. It is this stable elastic deformation that keeps the lateral faces of the half-shells (of which the bottom is narrower than the opening) widening outwards and what allows their stacking at the end of the manufacturing cycle. The package thus manufactured can pass, as explained hereinafter, from a stable stacking configuration to a stable packing configuration of the package by the sandwich, then to a closed stable configuration. Starting from the stable configuration of stacking, the face (1) and the lateral faces (2) and (5) are almost perpendicular to each other and can not be changed from a stable filling configuration only if a pressure is exerted on each half shell on approach (preferably at the same time and with both hands) the face (4) of the face (2). and the face (7) of the face (5) (figure 18 bis) and by rotating them towards the top each one on its fold hinged with the face (1) until the tension of the fold (a) is canceled at the same time that the adjacent faces (5), (1) and (2) are positioned in the same plane, which plays a role of the weighing scale of the packaging to change the configuration. Re-moving from the filling position to the stacking position does not represent more operational interest because the consumer does not have to do it.

But it is obviously possible to do the inverse movement which leads to force the folds (a) to become tensioned. Technically speaking, the small mobile folds (a) are the primary active element of packaging. Putting them under tension or putting them under tension conditions the passage of a major state of the packaging (stacking position) to another major state (filling position), which will be called reversal of the packaging (in one direction or another). For the rest, they ensure the stability of each of these major states, of which equilibria can not be broken except by tension. The filling of the packaging is easy because it is sufficient to introduce the sandwich on the edge against the face (1), vertically or horizontally on a working plane and to close a half shell on the other by means of folding in articulation on the articulation folds of the face (1). In this movement, the free lateral lips (11) figure 17, adjacent to the face (1) easily penetrate the interior of each half shell under and above the sandwich. The packaging is completely closed when the face (4) is perfectly superimposed on the face (7). The sandwich is then closed and hermetically isolated until consumed.

In its consumption, it is sufficient to separate the half shells from one another and the sandwich is presented on its edge against the face (1). It is comfortably retained to the packing under pressure of the fingers of one part and another on the sides of the lateral lips (11). The fold of the lips (11) towards the outside is made without sudden movement when the mouth must gain access to the last portion. Until the end, the packaging is prevented from spilling sauce, retained fat loss and retains its initial aesthetic shape. A second technical requirement of the packaging is that to avoid even better tearing the weak sheet of cardboard at the time of the trawl particularly at the level of the small folds (a) and (b) (especially in a very fast automatic manufacture) is very important that the four small triangles (v) of one part and another of (34) between the optimized reduced height folds (a) and (b), have the best possible resistance to tearing through the provision of projections (g) and (d) ) respectively to the outer angles of the reduced size folds (a) and (b) with the third side of the triangle; these projections are intended to eliminate the breaking principles now possible when the weak sides, pre-cut to the expected useful dimension, present acute angles subject to stretching, tensions or pressures in the course of the barquetaje. But the barquetaje itself is not the only possible cause of tearing of the packaging of Figure 17 and 18 at the level of the small triangles (v): - in effect, the packaging act itself of the sandwich (S) begins with the laying in the form of the packaging hand in the inversion operation that has been described above and of which the remarkable effect is that the faces (5), (1) and (2) return in this order in the same plane in a configuration stable that is the filling of the hamburger. This inversion to the hand that is done in a second (at the moment of the use or to the advance if necessary) produces the replenishment of folds results of four bellows defined by the small triangles (v), previously put into tension during the barquetaje. It is clear then that the projections (d) and (g) play an important role in the resistance to tearing at the moment of the inversion at the hand of the face (1) that causes the pseudo-verticalization of two half shells, open face to face, if by chance this investment is made abruptly. However, it is noted in the use that the packaging still retains an effect which is sufficient when a fold (a) is torn on one barqueta or on the other, even if a fold (a) is torn on each one. It is convenient to emphasize that polyethylene film cardboard packaging presents a perfect resistance to tearing also in the barquetaje that to the manual inversion. In a different consideration, it is noted that the moist heat emitted, particularly by a hot sandwich, into a package such as that described in particular by FIGS. 15 and 19 has a natural tendency to soften the walls of the package and to embrittle in particular, its closure if it is not secured in a sufficiently robust manner without thereby damaging an easy opening at the time of consumption of the sandwich. Numerous possibilities of closure exist but it will be done preferably in the regular hexagonal concept of the figures (17), (18) and (18) bis to a solidary closure with the external face of (7) under the inner face of (4) (or inversely) the inner face of (7) below the outer face of (4). The chosen system does not necessarily have to generate the putting into shape of the trays in particular if it is done very quickly automatically.

Figure 17 shows in the prolongation of the center of the face (7) a miter (z), in the form of a rounded arrow point of which the projections (q) and (q ') located on a line parallel to the exterior side of ( 7), have shown a value (L) slightly lower than (n). In the thickness of the face (3), and adjacent to the fold of the face (3) with the face (4) is made at the level of the center of the above-mentioned fold a rectangular slit (y) of the order of 1 to 2 millimeters of width and length (L) in such a way that after putting in place the sandwich in the packaging, at the moment of closing the miter attached to one of the two half shells can be hooked in the slit (y) of the other half shell by a slight pressure considering that (L) is slightly larger than (n); (4) is then in perfect coating of (7). The opening of the packaging takes place, at the moment very easily, by means of a slight pull towards the outside to uncouple the shells. Note that between the line (q) (q ') and the outer edge of the face (7) is located an isosceles trapezoid with a greater base (n), a smaller base (L) and of which the height must be approximately in relation to one millimeter for a packaging made from a thin sheet of the order of 2 to 3 tenths of a millimeter; The choice of the isosceles trapeze offers the possibility of self-adjusting closure on the oblique sides of the trapezoid. On the other hand it is noted that the faces (34) comprising the lips (11) can be provided differently to those of the figures (17) and (18). The restrictions here are: - first that the height of the face (34), lip (11) included, is greater than the value of the projection of the sandwich (S), in such a way that once the packaging formed on the sandwich, the face (34) leaves the sandwich only partially visible towards the center of the packaging, and on the contrary protects it up to its diameter. - The second restriction is that the packaging is also as perfectly closed laterally for the best maintenance of the temperature before consumption and particularly for hot and wet sandwiches. In figures 17, 18, 18bis, 19, 20 (pl.5) the sides of the faces (34) have been proposed in the extension of the folds (a) for a better reading of the figures; it is evident that the opposite faces (34) can each be extended from both sides towards the lateral faces (339 (figure 19) at the maximum limit of two symmetrical portions (x), insofar as these aggregate equivalent portions of both parts of (34) are completely integral with the faces (33) as well as the triangles (v) to allow the operation of the bellows-springs between the folds (a) and (b) In figure 19 corresponding to a practical embodiment greater, the articulation (m) of the lip (11) is ideally located between the two vertices (35) of the folds (a) of both parts of the joint (m), the segments (36) are divided to allow the ends ( x) of (34) penetrate the shells at the moment of closing the package and above all allow the bellows-springs between (a) and (b) to operate unhindered.The interest of having the largest faces (34) is First of all a better fastening of the sandwich by the thumbs and the Indices of the two hands more separated from each other; then a better protection against the spillage of the sauces particularly at the beginning of the consumption of the sandwich; finally, for a package that the restaurant can use either vertically or horizontally flat on a preparation table, it is desirable that the sandwich (n) does not touch the table, which could reach horizontal use before closing the package in the case of very large gaps between the face (34) and the adjoining faces (33). Figures 21, 22 and 23 present a packaging according to the last type, also capable of being manufactured industrially, but with a regular pentagonal section.

It comprises seven faces of wrapping for five sides of section, which implies that its closing principle puts into play four faces between them two by two. (the faces (6-), (4-), (7-) and (3-)). In effect, when this package is closed once the sandwich is placed on the face (1 '), the inner face of (6') is superimposed perfectly on the outer face of (41) while in the same movement, the inner face of (7 ') is superimposed perfectly on the outer face of (31). The closure can obviously be done in the other direction. In this packing of rectangular pentagonal section preferably the closure is made naturally by the superposition of the angle (de.108 °) between the faces (3) and (4) on the angle of (108 °) between the faces (6) and (7) at the end of the envelope, while allowing easy opening. To save the cardboard, that is, to use a shorter pre-divided blank, you can delete the portions outside the line (Al) (Bl) on the face (7 ') and the line (A2) (B2) on the face (4*) . These portions are shown in figures 23 and 24. Figures 24, 25 and 26 also have a packaging according to the last type, capable of being manufactured industrially, but square section.

This packaging comprises five wrapping faces for four section faces, which implies a closure of the same type as for the hexagonal section packing after the perfect covering of the outer face (5 '') by the inner face (3 '') or vice versa., figure 26. One might think that the stacking for this square packaging is evident and does not imply resorting to the investment technique after the trawling. It is conceived in the application that in the direct stacking of the parallelepiped packagings based on the same contiguous faces (4'1), (l1 ') and (2' ') they arrive very quickly to saturation, except for widening the packaging , which would render impossible any covering of the faces (511) and (3,!) after the wrapping, these faces are then presented in opposite isosceles trapezoids, for their larger bases. In the creation of packings for round sandwiches the one skilled in the art (in the precise analysis of the prior art known) does not seem to have major concern to make a product very specifically adapted to the consumption of the hamburger or other foods of this type and of This way taking into account all the restrictions of the consumers, but also of the professionals (of the fast food restaurants in particular).

For consumers, the specific packaging should be practical because the sandwich should be eaten in its packaging to avoid spills of sauce. It is necessary for the packaging itself to naturally invite the same for its configuration and to suggest that any consumer excludes any indifferent attitude. The comfort of the consumer does not exist surely when the hamburger is served in a rectangular case that does not materialize any notorious specificity as far as the practical requirements proper to the consumption of the hamburger in its packaging. The comfort of the consumer exists only when the hamburger is presented in a package of two half shells mounted on simple articulation as the sandwich is stuck to the bottom of a semi-shell with all the dislikes already described above in the present. Conversely, comfort exists when the sandwich placed on the large articulation plane of the two half shells that can be opened, is very accessible to the mouth and can be firmly held between the thumbs and the indexes of both hands when it bites, and that at the desired moment, the lateral lips of the packaging can be folded smoothly to allow the total consumption of the sandwich.

For the professional user, has the invention of an evolutionary packaging that adapts to your wishes. If you manage a small restaurant unit, you can use the first or second packaging, which will form the halves before or in disguised time. If you manage a large fast-food restaurant unit, you will preferably use the third stackable package, a little more expensive than the first two at the time of purchase, as it is immediately usable rather than an industrially rather low series price. The professional of the large restaurant unit (type fast food) will also appreciate the improvement of the image of your establishment by the aesthetics of its ubiquitous packaging, and the simple means to verify the fidelity that constitutes the net improvement of the service to the consumer. It will be appreciated in the invention the resolution of the complex problem presented by the inversion system of the double barqueta before the use, since the stacking of the packagings that this system allows gives it an economy of place in the kitchen. It is necessary to remember that the investment system of the invention exceptionally allows the industrial realization of the packaging in stackable barrels in unlimited quantity when their lateral faces are parallel to the use.

Claims (10)

1. CLAIMS 1. A packing or container for cylindrical sandwich of the hamburger type and for all foods of the same shape destined to be consumed in its packaging, obtained initially by cutting or dividing into plate a thin, semi-rigid sheet, comprising three longitudinal bands preferably parallel A, B and C, the central band is divided by parallel lines of external fold extending transversely to the band A to form on this band some faces, the two longitudinal bands A and B are composed of faces that they can be folded, equal, of lateral wrapping, each delimited by both parts by lines of external fold or lines of internal fold, one of the faces of the central band C constitutes the face of articulation to receive the sandwich on its edge, the lateral faces that can be bent are adjusted to the articulation face respectively on the bands A and B are attached to the side faces that can be attached to the face s adjacent to the hinge face on the C-band by internal fold lines forming the extension of the external transverse fold lines located on both sides of the hinge face, and the lateral faces that can be bent on the A and B bands. B of the faces adjacent to the articulation face on the strip A are provided with oblique lines of external fold starting from each corner of the base of each lateral face that can be bent, characterized in that each of the two lateral faces that are can bend butts to the articulation face are provided with a fold line parallel to the three bands and extends from one side of the side face that can be folded to the other, the oblique fold lines start from each corner of the face of articulation being joined to the fold lines parallel either by a fold line or by an edge, to allow in a first version to quickly wrap the cylindrical sandwich on its periphery and on its sides when arranging the incoming and protruding folds between the lateral faces that can be folded according to the set of external and internal fold lines, on both sides of the articulation face.
2. 2. A cylindrical sandwich packaging of hamburger type and for all foods of the same shape intended to be consumed in its packaging according to the first claim, characterized in that in a second mode, the trimming or division of the dish initially in double symmetry it can be manually preformed into two half-shells fastened and in articulation by both parts of the central base of the packaging representing the articulation face, intended to receive the sandwich on its edge and which allows faster assembly of the packaging around the sandwich.
3. 3. The cylindrical sandwich packaging of hamburger type and for all foods of the same shape intended to be consumed in its packaging according to the first two claims, characterized in that in a third embodiment, the flat cut initially in particular double symmetry can be preformed in a stable stacking configuration, to allow an instantaneous investment of the packaging on its very fast assembly around the sandwich.
4. 4. The cylindrical sandwich packaging of hamburger type and for all foods of the same shape intended to be consumed in its packaging according to the first claim, characterized in that it comprises incoming and outgoing fold lines arranged in symmetry with each other on two- identical bands A and B of which the width is equal to the radius of the sandwich to be packaged, bands symmetrical with each other in relation to a central band of which the width is equivalent to the thickness of the sandwich and which also comprises equally spaced fold lines between yes and on the axis of the two incoming fold lines respectively on bands A and B.
5. 5. The cylindrical sandwich packaging of hamburger type and for all foods of the same shape intended to be consumed in their packaging in accordance with the claim 4, characterized in that: the same front faces determined by the protruding folds of the band C are organized on both sides of a joint face perpendicular to which the sandwich is positioned on its edge to be wrapped in relation to the front faces on the sandwich on both sides of the articulation face at the same time that the bands A and B each fold on one side of the sandwich, starting from the faces of these bands, adjacent to the articulation face, and symmetrical in relation to the coordinated fold. thereto, the bands A and B comprise projecting fold lines and incoming fold lines arranged in symmetry with respect to each other in relation to the faces, such that: the fold lines entering the extension of the fold lines projecting from the band C, since they are parallel and equidistant from each other, determine on both sides of the faces, surfaces equal to these faces, and each one has line of projecting fold, which starts for the first four of four right angles of the articulation face, to reach the outer sides of the faces adjacent to the faces on the bands A and B, the outgoing fold lines thus obtained are symmetrical between them in relation to a face respectively on a band A or B. the following faces of both parts of a face also have fold lines projecting (a) parallel to the preceding ones on the same band A or B and symmetrical in pairs, the projecting fold lines (a) thus defined on the bands A and B, after the assembly of the packaging around the sandwich, determine two lateral sides of the packaging consisting of isosceles triangles (for all packages having a regular polygon section from a pentagon - with the exception of the hexagonal section presented by the equilateral triangles) of which the base are the sides common to the faces delimited on the band C with their adjacent faces on the bands A and B, the incoming fold lines, in this configuration are arranged in support folds on the sandwich towards the inside of the packaging in order to make possible the formation of the sides that can be folded from side wrapping during the assembly of the packaging.
6. 6. The cylindrical sandwich packaging of hamburger type and for all foods of the same shape, intended to be consumed in their packaging, according to claims 1 and 5, characterized in that the bands A and B have, on the side of the symmetrical faces a height slightly greater than a line of the exit fold, which is longer than the other protruding fold lines defined with the height, on the apex of the face, an outside miter to both bands A or B, the miter It is sandwiched between the sandwich and the inner face to keep the sandwich imprisoned in its first wrap phase.
7. 7. The cylindrical sandwich packaging of hamburger type and for all foods of the same shape, intended to be consumed in its packaging according to claims 1, 4, 5 or 6, characterized in that the faces opposite the faces on the Bands A and B have a split miter that closes laterally on both sides the rear packing of the projecting folds of the faces, this preferred closure of the packaging according to this version is facilitated by a division.
8. 8. The cylindrical sandwich packaging of hamburger type and for all foods of the same shape intended to be consumed in its packaging according to claim 2, characterized in that, from a double symmetry division form, it is possible to realize a package consisting of two half shells symmetrical to the manual pre-assembly by fastening or fastening, each of them in articulation in relation to the articulation face, in order to be bent towards each other to imprison the sandwich deposited on its edge on the face of articulation.
9. 9. The cylindrical sandwich packaging of hamburger type and for all foods of the same shape, intended to be consumed in its packaging according to claim 3, characterized in that the optimized reduction of the projecting fold lines (a) determines the mobile folds and the fold lines of support (b) determine the fixed pleats that determine between the same small triangles with the edges of the packaging, triangles of which the tear strength is improved by projections (d) that respectively surround the outer angle with the external edge of the triangle (v) and the outer angle with the outer edge of the triangle (v), make possible a double barquetaje of the useful symmetrical faces previously divided to form two stable symmetrical half shells, in articulation in relation to the face and that they can rest horizontally on their respective bases and be stacked to the extent where: the stacking after the barquetaje it is technically feasible due to the fact that the tensioning of the small protruding folds according to the fold lines after the adhesion cause a stable elastic deformation that keeps the lateral faces of the half-shells of the bottom narrow and large opening, widened outwards, the optimum length of the fold lines is what allows to maintain the stable elastic deformation of the half shells without breaking the cardboard at the outer ends of the corresponding folds, the configuration of the packing in stable stacking position does not it can move to the stable filling position more than if a radial pressure is exerted on each half shell in the proximity of one hand the face of the face and the other side of the face that are made to articulate at the same time towards the top on its fold articulated with the phase, which releases the tension of the protruding folds according to the fold lines and which simultaneously allows the faces to return to the same plane, then return after the stable filling position to the stable stacking position it is possible by means of a reverse action of the procedure that leads to force the outgoing folds according to the fold lines to be put back in tension, in closing position by approaching the two lightweight half-shells to compensate for the resistance of the spring bellows arranged between the fold lines (a) determine mobile folds and the fold lines (b) determine supporting folds fixed, the faces on which are horizontally articulated the lips are leveled on both sides of the packaging to the faces in filling position to penetrate on two sides of the sandwich in the half shells which at the end of the course are closed one over the other by the total overlap of one face on the other or vice versa, in the opening of the packaging for the consumption of the sandwich, the two half shells are separated on both sides of the face thanks to the effect of expansion of the spring bellows between the fold lines (a) and (b); the two opposite sides of which the height is slightly higher than the radius of the sandwich are released and the packaging authorizes the consumption of the sandwich positioned on its edge on the face, the external fold of the lips at the desired moment, and retains the sauce spills and waste thanks to the interior of the rigid and laterally closed horizontal structure between the two half shells, structure of which the minimum lateral height equals the height of the fold line when the lips are bent outwards.
10. 10. The cylindrical sandwich packaging of hamburger type and for all foods of the same shape intended to be consumed in its packaging according to claim 9, characterized in that the inversion action of the scale plane defined by the faces and that is it passes through the tensioning of the over tensioning and vice versa of the mobile protruding folds according to the fold lines, it allows the realization of packages in stackable enlarged barlets when the lateral faces of these barlets become parallel once that the hamburger is packed.