MXPA00005688A

MXPA00005688A - Ice cube bag and a method of producing ice cube bags.

Info

Publication number: MXPA00005688A
Application number: MXPA00005688A
Authority: MX
Inventors: Erling Vangedal-Nielsen
Original assignee: Unigreen Internat A S
Priority date: 1997-12-11
Filing date: 1998-12-09
Publication date: 2004-12-03
Also published as: AU750053B2; PL341303A1; EP0927859A2; BR9813551A; HUP0101179A3; ATE241789T1; NO20002999D0; EA002409B1; DE927859T1; SK8382000A3; NO312261B1; PT927859E; CZ20001951A3; CA2313640C; NZ504808A; DE69815045T2; GR990300036T1; PL191463B1; IL136526A0; DK172638B1

Abstract

An ice cube bag comprises two sheet-shaped foil layers (12, 14; 12', 14') defining an outer periphery. A peripheral joint (20, 21, 21a, 21b) extends along the major part of the outer periphery of the foil layers, with the exception of a peripheral area constituting an inlet aperture of said bag (10). Their peripheral joint joins the foil layers together defining an inner chamber which is divided into several ice cube compartments defined by separate joints (22, 23, 24, 25, 29) of the foil layers. An inlet channel extends from the inlet aperture to the inner chamber of the bag hereby allowing admission from the surroundings to the inner chamber of the bag through the inlet channel. Each of said separate joints (22, 23, 24, 25, 29) is constituted by a number of individual joints (22, 23, 24, 25, 29), each of these individual joints (22, 23, 24, 25, 29) establishing a connection between the two sheet-shaped foil layers (12, 14; 12', 14') with such a joint strength and with such a limited area extension that the individual joint is not broken when the foil layers (12, 14; 12', 14') are exposed to a separation force, but provides a tearing apart or perforation (44) in one of the foil layers (12, 14; 12', 14') along the periphery of said individual joints. Hereby an ice cube bag is obtained which is easy to open by tearing it apart.

Description

BAG FOR ICE CUBES AND METHOD FOR MAKING BAGS FOR ICE CUBES BACKGROUND OF THE INVENTION The present invention refers to an ice cube bag comprising: two layers of sheet-shaped sheet having substantially identical geometrical configurations and defining an outer periphery, a peripheral junction disposed along most of the outer periphery of the sheet layers except for a peripheral area that constitutes an inlet channel of the bag whose peripheral junction joins the layers of sheet together mainly overlapping each other and defining an internal chamber inside the bag, whose internal chamber is divided into several compartments of ice cubes defined in relation to each other by separate joints of the layers of sheet, an input channel defined by joints of the layers of sheet and arranged from the entrance channel to the inner layer of the bag so that the from the contour to the internal chamber of the bag through the entrance channel. Numerous ice cube bags are known within this technical field, for example, from US Patent No. 3,207,420, US Patent No. Re 31,890, US Patent No. 4,822,180 which corresponds to European Patent No. 0 264 407, the published European patent application No. 0 129 072, the international patent application, publication No. WO 82/00279, the international patent application, publication No. WO 87/01183 corresponding to the European patent No. 0 248 817, the international patent application, publication No. WO 86/04561, the international patent application, publication No. WO 92/15491 corresponding to the European patent Ne 0574 49 and the published European patent application N 0 619 948 and the Danish pate N ° 172066 corresponding to the published European patent application No. 0 795 393. In these numerous publications to which reference is made and which are incorporated herein by reference a large amount of construction Bags for ice cubes of different embodiments having different closure devices are described, including knot closure, self-closing, etc. Within this technical field it is commonly known that ice cube bags are glued or welded, the Danish patent mentioned above and the corresponding published European patent application describing an industrial method for the production of ice cube bags having continuous welds or intermittent.

In this technical field it is commonly known that ice cube bags with very strong bonds, especially welds or glueings can be produced, providing safe and reliable containment of the ice cubes produced by means of the ice cube bag. In a similar manner it is generally known that it can often be quite difficult for a user to open a bag of ice cubes in which the ice cubes are contained, since the sheet used, especially the plastic sheet of polyethylene that is It uses and the joints enough resistant, causes that the tear and separation or opening of the ice cube bag is quite difficult. In the international patent application, publication No. WO 87/01183 and the corresponding European patent No. 0 248 817 there is described an ice cube bag construction in which gluing is preferably used to establish joints within the bag for ice cubes. The joints are then relatively easy to separate again allowing a conversion of the ice cube bag from an ice cube bag divided into compartments into an ice cube bag without compartments. In the European patent it is indicated that the joints allow a conversion of the ice cube bag from an ice cube bag with compartments to an ice cube bag without compartments can be established as welds or alternatively as glueings, since a person skilled in the art could deduce a technique to establish weak welds that allow such tearing and separation of the joints for the conversion of the ice cube bag in a compartmentalized form to a shape without compartments. In this respect, in the European patent it is specifically indicated that the tearing and separation of the joints, especially the glueings, should not cause any deterioration of the walls of the ice cube bag, that is to say produce a correct tearing of the bag for cubes of ice, but only a separation of the unions previously established. SUMMARY OF THE INVENTION The present invention is based on the problem or the objective of providing an ice cube bag of the type mentioned in the introduction where it is possible in some simple way to provide a tear-off line for the cube bag. of ice when the amount for ice cubes has been produced in the ice cube bag by inserting water into the ice cube bag which is then frozen by positioning the ice cube bag containing water in a deep freezer, a domestic freezer, a freezer cabinet or similar. This problem or this objective in itself understands a contradiction, because on the one hand a reliable seal of the ice cube bag is provided to avoid an unintentional loss due to weak joints provided in the ice cube bag, which includes welds or glued connections that can be an inappropriate point of breakage over time and thus provide a loss. On the other hand, the desire to provide an ice cube bag in which it is easy for the user to access the inside of the ice cube bag in order to remove the confined ice cubes inside the cube bag. Ice indicates that the joints should be weak and thus facilitate tearing and separation of the ice cube bag. The invention is based on the fact that by means of a suitable geometric design of the joints that provide separation of the internal chamber of the ice cube bag in numerous compartments of ice cubes it is possible to design these joints in such a way that These joints that are preferably produced by the same technique and with the same strength as the other joints in the ice cube bag can provide an opening of the ice cube bag after producing ice cubes or ice cubes freezing the water contained in the inner chamber of the ice cube bag. The aforementioned purpose is obtained by means of an ice cube bag according to the present invention, and the aforementioned objective is solved according to the disclosures of the present invention by designing the ice cube bag mentioned in the introduction in such a way that each of the separate junctions defining the two ice cube compartments abutting in relation to each other is constituted by a number of individual junctions and that each of these individual junctions establishes a connection between the two layers of sheet in a sheet with such bond strength and with such limited area extension that the joint in question is not broken when the sheet layers are exposed to a separation force, but which produces a tear and separation line or perforations in one of the sheets laminated along the periphery of the joint in question. One embodiment of the ice cube bag characteristic of the present invention is characterized in that the joints that produce the definition of the ice cube compartments inside the ice cube bag are constituted by a number of individual joints, each of which establishes such a union between the two sheet-shaped sheet layers of the ice cube bag so that the joint in question can not be torn and separated or broken by itself, but at the same time, due to the limited area extension of the joint in question, allow the joint to produce a tear and separation or perforation of one of the sheet layers of the ice cube bag when the layers are pulled of blade in sheet form of the bag for ice cubes and it is about separating them. In this regard, it should first be noted that this tearing and separation or perforation is not in itself conditioned to any specific force orientation, but according to the disclosures of the present invention it has been found advantageous that the freezing of the water inside the the ice cube ice cube bag will stretch the film layers so that a simple bending of the ice cube bag can by itself produce the necessary tearing and separation or perforation of one of the layers of sheet of the ice cube bag since the stretched film layers thus produce a considerable style in one of the sheet-like sheet layers in which consequently tearing and separation or perforation occurs. It should be noted that the separate joints characteristic of the present invention should not be mixed with the indication in the abovementioned European patent No. 0 248 817 that indicates that suitable surface welds can be constructed by means of micro-welds that can be separated according to the effect desired technician in the European patent in question. Unlike this technical effect described in the aforementioned European Patent No. 0 248 817, according to the present invention a correct break by tearing and separating or perforating one or the other or both of the two layers of sheet form sheet is produced when the ice cube bag according to the present invention is intended to be opened or broken. Also, it should be noted that the modality of compartments separation of compartments. ice cubes characteristic of the present invention due to the very limited extension of area of these joints is very conditional on a better utilization of the compartments of the ice cube bag as compared to known commercial ice cube bags, since the bag for ice cubes of the type described in the examples below can contain a total mass of liquid of 480 ° and the forces for commercially available ice cubes typically contain liquid masses in the order of 280-370 °. According to the present invention the characteristic advantage is also obtained because the individual ice cube compartments could be selected through corner connections between the individual ice cube compartments unlike the conventional ice cube bags which have, for example, on the contrary, the ice cube compartment that defines or separates junctions in the corners, between the compartments of individual ice cubes. In this way, an easier and faster filling of the inside of the ice cube bag is obtained in comparison with the commercial ice cube bags according to the prior art, and a larger internal volume, that is, volume of liquid, which is obtained in the bag for ice cubes.

The individual bonds characteristic of the present invention forming the definition of the ice cube compartments in the inner chamber of the ice cube bag are, as will be described below, typically placed in lines in an orthogonal configuration in the bag. for ice cubes that conditions the use of a minimum surface area of the two layers of sheet-shaped sheet for the establishment of ice cube compartment formation joints and at the same time a well-defined delimitation of cubes of ice cubes. 5 ice cubes or ice cubes contained in the ice cube bag since the ice cubes have typically been defined by straight lines according to the orthogonal configuration mentioned above. To increase the technical effect of tearing and separation or production of perforations in one of the sheet layers of the ice cube bag according to the present invention when the ice cube bag is to be broken or opened it is preferred that said individual joints are placed at a mutual distance S such that the individual joints when they are broken or punched in one of the sheet layers produce directions for a perforation line in one of the sheet layers, thereby obtaining a particularly simple effect of tearing and separation or opening. With reference to the sheets generally used in the industry today, especially the polyethylene sheets, according to the disclosures of the present invention it has turned out that the characteristic effect of the present invention, namely a tearing and separating effect or perforation by breaking or opening the ice cube bags, is obtained by the factor calculated as the area of the individual union expressed in. square millimeters divided by the circumference or perimeter of the same union measured in millimeters is between 0.025 mm and 0.5 mm, preferably between 0.125 mm and 0.375 mm, such as approximately 0.25 mm. With reference to the sheets commercially used, it has been proved by tests that the characteristic effect of the present invention can be obtained for each of the above-mentioned individual bonds having an area extension corresponding to the area of a circle having a diameter comprised between 0.1 and 5 mm, such as 0.5 mm and 1.5 mm, preferably between 0.9 mm and 1.0 mm, such as between 0.5 and 0.8 mm, between 0.8 and 1 mm, between 1 mm and 1.2 mm or between 1.2 mm and 1.5 mm. Although with reference to the development of the embodiment based on the present invention only tests with welding of sheet form layers for the production of ice cube bags are carried out, it is expected that the characteristic technical effect of the present invention to provide the opening or tearing and separating the ice cube bag by tearing and separating or perforating one of the sheet layers can also be obtained using gluing techniques. A feature of the present invention, as described above, is that all the joints in the ice cube bag can be sold by means of only one technique and preferably in the one and only process, for example, a welding process, which results in a substantially lower production cost as compared to a process in which the internal compartment separation joints are produced by one technique, while the peripheral joints are produced by means of another technique. Thus, according to the present invention, the presently preferred embodiment of the ice cube bag demonstrates that the characteristics of the peripheral joint as well as the input channel defining joints and the individual joints mentioned are all constituted by glueings or preferably welds. The above-mentioned individual bonds that are characteristic of the present invention for the production of the aforementioned tear and separation or perforation lines of one of the sheet layers, the other one of the sheet layers or both sheet layers throughout from the periphery of the union in question may, in fact, have arbitrary geometric configurations, although it is currently preferred that the unions in question be of circular configuration.

Alternatively, these individual junctions may have configurations of ellipses, line segments, triangles, rectangles, squares, polygons, convex or concave arbitrary contours that define configurations or combinations of arbitrary configurations of the above mentioned configurations. According to two embodiments alternatively of the ice cube bag according to the present invention, the ice cube bag of one of these embodiments is designed as a self-closing bag in which the two sheet-shaped sheets provide extensions that they form two closing flap valves placed in the inlet opening and that go from the entrance opening and into the bag towards the internal chamber of the bag along the entrance channel which are joined by means of the abovementioned channel of entry defining joints so that two closure pockets are provided that are open towards the internal chamber of the bag, while the ice cube bag according to the second embodiment constitute a bag with a knot closure providing perforations or cuts in | the two sheet-shaped sheets outside the entrance channel defining joints in order to allow the sheet material to be tied on both sides of the entrance channel for the provision of a node that closes the entrance channel. As mentioned above, the ice cube bag can preferably be produced from a plastic sheet material, especially polyethylene, preferably low density polyethylene or high density polyethylene or other glued or weldable sheet material, preferably plastic sheet material or polymer or aluminum foil material or combinations of such materials, for example, plastic material coated with aluminum foil material. The ice cube bag according to the present invention may be provided in accordance with alternative embodiments of or configured with a large or small amount of compartments for ice cubes; that is, to be provided with two or more compartments for ice cubes. In certain embodiments the ice cube bag may have a limited number of compartments for individual ice cubes, for example, 2, 3 or 4 compartments for ice cubes, thereby obtained by means of a given size of the two sheets of form in sheet with which the ice cube bag is produced relatively large ice cubes or ice cubes for industrial applications or for domestic applications. In the presently preferred embodiments of the ice cube bag according to the present invention, however, it preferably has a greater amount of 4, for example, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 30 or 36 compartments for ice cubes. However, embodiments having an odd number of compartments are also possible. for ice cubes, for example 15 or 21 compartments for ice cubes. One embodiment of the ice cube bag according to the present invention having a single compartment for ice cubes defined inside the ice cube bag can also be implemented for special purposes. The individual ice cube compartments in the ice cube bag can be individually defined by the individual links characteristic of the present invention, but alternatively they can be grouped into separate sub-compartments, which allows opening or tearing apart part of the bag For ice cubes take a limited amount of ice cubes from the ice cube bag instead of removing all the ice cubes from the ice cube bag. As will be explained in more detail below, the configuration, orientation and mutual distance between and the position of the individual joints defining the ice cube compartments inside the ice cube bag determines a greater or lesser degree of tendency to use the technical characteristic of tearing and separation or perforation of the present invention. Likewise, as explained below, it is expected that the number of individual junctions defining two compartments for ice cubes adjoining one another will be important in order to obtain the characteristic function of the invention, as well as the number of connections Individuals either in the form of an odd quantity or an even amount are of importance on the generation of the tearing and separation or perforation of one of the layers of the ice cube bag, by means of the opening or tearing and separation of the Bag for ice cubes will be of importance. While the ice cube bag according to the present invention can be produced from arbitrarily shaped sheet-shaped sheets, including non-rectangular sheets, eg, elliptical, polygonal or triangular, it is preferred that the two layers of sheet form in sheet are substantially rectangular. According to special supplementary features of the ice cube bag according to the present invention, the ice cube bag is preferably provided as described below, of expansion chambers placed on one or both sides of the inlet channel, being the - established connection of the internal chamber of the ice cube bag with the expansion chamber or the expansion chambers. ? In order to further facilitate the tearing and separation or opening of the ice cube bag according to the present invention, tear holes for the tearing and separation direction of the ice cube bags can be provided in the two sheets in the form of sheet outside the inlet channel as will be explained below, thereby making it possible to use in combination the tearing and separation or perforations, characteristics of the present invention of one of the layers in the ice cube bag and at the same time tear and separate the bag for ice cubes by means of the tearing holes mentioned above. BRIEF DESCRIPTION OF THE FIGURES In the following the invention will be described in detail with reference to the drawings, in which: Figure la is a schematic side view of a first preferred embodiment of an ice cube bag according to the present invention; Figure Ib is a sectional view of the upper part of the first preferred embodiment of the ice cube bag according to the present invention illustrated in Figure 1; Figure 2 is a schematic and perspective view of the first preferred embodiment of the ice cube bag according to the present invention illustrated in Figures la and Ib after the ice cube bag has been filled with water and after the water has been frozen to ice for the production of the ice cubes confined in the ice cube bag; Figures 3a and 3b are schematic and perspective views of the two stages during a procedure in which the ice cube bag illustrated in Figure 2 and containing the ice cubes is torn and separated to remove the confined ice cubes in the ice cube bag; Figures 4a and 4b are perspective and sectional views with additional details of the tearing and separation operation schematically illustrated in Figures 3a and 3b; Figure 5 is a schematic view corresponding to the Figure of the upper part of a second embodiment of the upper part of the ice cube bag according to the invention; Figures 6a and 6b are illustrations corresponding to Figures 4b and 4a, respectively, of the result of a fold of the second embodiment of the ice cube bag according to the invention illustrated in Figure 5, transversely in relation to the direction longitudinal of the bag for ice cubes and longitudinally of the ice cube bag, respectively, for the production of tearing and separation or breakage, respectively of the ice cube bag and a deterioration of the separations of the confined ice cubes in the ice cube bag; Figure 7a is a schematic view corresponding to Figure la and Figure 5 of a third embodiment of the ice cube bag according to the invention; Figure 7b is a schematic view of a detail of a modified side weld in relation to the embodiment of the ice cube bag according to the invention illustrated in Figure 7a; Figure 8 is a schematic view corresponding to Figure 1, Figure 5 and Figure 7a of a fourth embodiment of the ice cube bag according to the invention; Figure 9 is a schematic view corresponding to Figure 1, Figure 5, Figure 7a and Figure 8 of a fifth embodiment of the ice cube bag according to the invention; Figure 10 is a schematic and perspective view of a tearing and separation process of the fifth embodiment of the ice cube bag according to the invention illustrated in Figure 9 after freezing the water contained inside the bag for ice cubes in ice cubes; Figure 11 is a schematic and perspective view corresponding to Figure 1, Figure 5, Figure 7a, Figure 8 and Figure 9 of a sixth embodiment of the ice cube bag according to the invention; Figure 12 is a schematic and perspective view corresponding to Figure la, Figure 5, Figure 7a, Figure 8, Figure 9 and Figure 11 of a seventh embodiment of the ice cube bag according to invention; Figure 13 is a schematic view corresponding to Figure 1, Figure 5, Figure 7a, Figure 8, Figure 9, Figure 11 and Figure 12 of an eighth embodiment of the ice cube bag according to to the invention; Figure 14 is a schematic and perspective view corresponding to Figure 1, Figure 5, Figure 7a, Figure 8, Figure 9, Figure 11, Figure 12 and Figure 13 of a ninth embodiment of the invention. ice cube bag according to the invention whose ninth embodiment differs from the previous eight embodiments in not being a high-closure ice cube bag but an ice cube bag having a knot closure; Figure 15 is a schematic and perspective view of the third embodiment of the ice cube bag according to the invention illustrated in Figure 7a after having been filled with water and after freezing, after which by means of manipulation physical that corresponds to the procedures illustrated in Figures 6a and 6b the ice cube bag can be torn and separated, or alternatively it can be converted into a bag without compartments; Figure 16 is a schematic and perspective view of the third embodiment of the ice cube bag according to the invention illustrated in Figure 7 after the ice cube bag as illustrated schematically in Figure 15 has been converted to an ice cube bag. bag without compartments with ice cubes freely arranged inside the bag; Figure 17 is a schematic and perspective S view corresponding to Figure la, Figure 5, Figure 7a, Figure 8, Figure 9, Figure 11, Figure 12, Figure 13 and Figure 14 of a tenth embodiment of the ice cube bag according to the present invention; Figure 18 is a schematic and perspective view corresponding to Figure 1, Figure 5, Figure 7a, Figure 8, Figure 9, Figure 11, Figure 12, Figure 13, Figure 14 and Figure 17 of an eleventh embodiment of the ice cube bag of S according to the present invention; Figures 19a and 19b are schematic and perspective views corresponding to Figure 18 of the twelfth modality and the thirteenth modality of the cube bag of the ice cube bag according to the invention, respectively; Figures 20a, 20b, 20c and 20d are schematic and perspective views corresponding to Figures 1, 5, 7a, 8, 9, 11, 12, 13, 14, 17 and 18 of a fourteenth, a fifteenth, a sixteenth and a sixteenth modality, respectively, of the ice cube bag according to the present invention; Figures 21 and 22 are schematic and perspective views of two alternative embodiments of a plant for the production by welding of the ice cube bag with the present invention; and Figure 23 is a schematic and perspective view corresponding to Figures 1, 5, 7a, 8, 9, 11, 12, 13, 14, 17, 18 and 20a, 20b, 20c and 20d of an eighteenth embodiment of the ice cube bag according to the present invention. DETAILED DESCRIPTION OF THE PREFERRED MODALITY Figures 1a and 1b are schematic, planar and sectional views, respectively, of a currently preferred embodiment of an ice cube bag according to the invention. The ice cube bag in its entirety is designated with the reference number 10. The ice cube bag is composed of two identical plastic sheets, preferably sheets of low density polyethylene with a thickness of 25 microns or alternatively polyethylene sheets of high density of a thickness of 18 microns, whose sheets are designated with the reference numerals 12 and 14. Each of the sheets has a folded portion designated with the reference numbers 16 and 18, respectively and which are directed inwardly to the inside of the bag for ice cubes 10 and forming exposed internal edges, 17 and 19 respectively. The sheets 12 and 14 are of substantially rectangular configuration and are placed superimposed on each other with the folded parts 16 and 18 as mentioned above directed inwardly into the ice cube bag 10, the sheets 12 and 14 being joined by means of two lateral welds 20, a lower weld 21 and two upper welds 21a and 21b, which together constitute a circumferential continuous weld disposed along the periphery of the sheets 12 and 14, except for a line segment defining a channel entrance to the interior of the ice cube bag between the two upper welds 21a and 21b. It can be considered that the inside of the ice cube bag 10, that is to say inside the circumferential continuous welding mentioned above defined by the two side welds 20, the lower weld 21 and the two upper welds 21a and 21b comprises two parts, one entrance channel placed at the upper end of the ice cube bag and an interior compartment formed by compartments of ice cubes. It should be noted here that expressions such as "upwards", "down", "top", "bottom", "horizontal", "vertical", "perpendicular", etc. that refer to the orientation of the ice cube bag in relation to the vertical orientation determined by the force of gravity should be interpreted as expressions that only serve the purpose of describing the general, usual orientation of the bag for cubes of ice in use, especially when filled with water, since a greater or lesser part of the ice cube bag may of course be folded in relation to a specific orientation, such as vertical orientation, or force for Ice cubes can be entirely maintained in a sloping position in relation to a specific orientation, for example, in relation to the vertical orientation. The entrance part placed on the upper end S of the ice cube bag is defined by two symmetrical mirror welding assemblies defining an input channel leading from above the entry opening defined between the two upper welds 21a and 21b and inside the above mentioned inside of the ice cube chamber in the ice cube bag. The input channel is substantially designed in accordance with the technical disclosures and technical principles defined in European Patent No. 0 574 496 and in published European Patent Application No. 0 616 448 to which reference is made, and These two publications are incorporated in the present application by way of reference. More specifically, the inlet channel is defined by the welds 30 that converge from the inlet opening to the ice cube chamber of the ice cube bag, which in a restriction in the inlet channel extends to two welds 32 mainly semicircular, placed symmetrically, the transition between the welds 30 and 32 constituting the aforementioned restriction in the entrance channel, whose restriction is further limited by two parallel rectilinear welds 34. The lower portions of the semicircular welds 32 extend into two sloping and diverging welds 37 which are connected to the two lateral welds 20, said two welds 27 being outwardly sloping and diverging interrupted to produce two upwardly directed channels positioned symmetrically about of the inlet channel, whose upwardly directed channels mentioned are individually defined by two parallel welds 36 and 37 and go to respective expansion chambers 40 defined by a weld 38 configured mainly elliptical, which go to an associated side weld 20 and are placed behind of a respective rectilinear weld 34. Expansion chambers 40 and associated sets of parallel welds 36 and 37 may be omitted. The aforementioned welds 30 converge to one another constituting a first part of the inlet channel, while the semicircular welds 32 mentioned above constitute a second part of the inlet channel. As is evident from Figure 1, the folded portions 16 and 18 of the sheets 12 and 14 are disposed downward to a position immediately opposite the middle of the second part defined by the elliptically shaped welds 38 mentioned above. It should be noted that other positions of the lower edges 18 and 19 of the folded portions 16 and 18, respectively in relation to the semicircular shaped welds are possible, for example, as described and illustrated in the above-mentioned European patent and in the application for European patent published above mentioned. Also, it should be noted that the folded portions 16 and 18 of the sheets 12 and 14, respectively, can be punched and cut so that the folded sheet material is present only in the entrance channel itself and immediately outside the entrance channel., but cut and removed along the outer sides of the inlet channel where, consequently, the place of the welds 36 and 37 in the expansion chambers 40, there may be additional ice cube compartments according to the disclosures of the present invention and as will be described below. As is evident from FIG. 1, the chamber S for internal ice cubes with compartments mentioned above is further divided into three sub-compartments which in the following will be designated the upper sub-compartment, the middle sub-compartment and the lower sub-compartment respectively, with two linear welds 26 running from each of the two lateral welds 20 inwards towards the midline of the ice cube bag. This total of four linear welds 26 have a length that constitutes less than half the internal free width S between the side welds 20, so that between each pair of linéal welds 26, placed in a line, an opening is formed between the sub-sections. -Adjacent compartments to allow water to flow from the upper sub-compartment, to the middle sub-compartment at plus or below to the lower sub-compartment. The individual sub-compartments, ie the three sub-compartments mentioned above, are also each divided into eight compartments for ice cubes by means of spot welds, 5 being provided four sets of horizontal point welds and three sets doubles of perpendicular point welds in each of these three sub-compartments. In this context, the expression. Rding horizontal point welds, it should be interpreted as an expression that does not refer to the individual point welds being horizontal, since the point welds are of circular or approximately circular configuration, but on the contrary they express that the line Another curve in which the spot welds are placed is arranged in a horizontal or substantially horizontal orientation. Correspondingly, the expression referring to perpendicular knit welds must be interpreted so that the knit welds in question are placed in a curve, preferably a line, arranged in a perpendicular or approximately perpendicular orientation. The three double sets of perpendicular point welds and the four sets of horizontal point welds in each sub-compartment are in areas that constitute connection areas between the ice cube compartments in which connection area welds are not provided. connecting the two sheets 12 and 14 together. The spot welds in the four sets of horizontal point welds and the corresponding point welds in the three double sets of continuous perpendicular point welds to the aforementioned connection areas are made with a larger extent than the other point welds. Each of the four sets of horizontal point welds thus constitutes five point welds designated with the reference number 22 whose point welds typically have a size of 0.1-5 mm, such as 0.5-1 mm, for example , 0.6-0.9 mm, preferably approximately 0.9 mm, the two sets of continuous horizontal knit welds constituting the side welds 20 a sixth knit weld 22. Each of these two sets of knit welds adjacent to the side welds 20 they constitute two point welds designated with the reference numeral 23, whose point welds have, in comparison with the point welds 22, a larger diameter, typically a diameter of more than 0.5 mm, such as more than 1 mm, by example a diameter of 1-1.5 mm, for example a diameter of 1.1-1.3 mm, preferably a diameter of 1.1 mm. Each of these two medium sets of horizontal point welds constitutes, as will be apparent from the following description, five point welds 22 and two point welds 23. The three double sets of perpendicular point welds comprise, each corresponding to the two middle sets of horizontal point welds 5, welds of point 24 corresponding to the point welds 22 and to the two point welds 25 corresponding to the point welds 23. The first preferred embodiment described above of the ice cube bag 10 is illustrated in a flat condition where the two sheets 12 and 14 are flattened to each other, the ice cube compartments being internal to the ice cube bag and correspondingly the inlet channel and the expansion chambers are partly filled with air, but illustrated in an unfilled condition, that is, in a condition in which the water has not yet filled the inside of the bag. In Figure Ib the upper part of the ice cube bag 10 is illustrated in a sectional view according to line II of Figure 1, illustrating the two sheets 12 and 14, the folded parts 16 and 18 of the sheets and the lower edges 17 and 19 of these folded sheet parts 16 and 18. Likewise, in Figure Ib the total of seven welds is shown in the perpendicular top set of spot welds comprising two spot welds 25 and five point welds 24 placed between these two point welds 25. The difference in size between the spot welds 22 and 23 and correspondingly the point welds 24 and 25 is conditioned by a desire that there be no immediately adjacent point welds, ie the knitted welds 23 and 25, are not torn and separated during filling with water and during the freezing of the water, since it must be remembered that when it is cooled below a temperature of 4 ° C, the water expands and with It continues to expand during freezing, causing a given amount of liquid contained inside the ice cube bag during freezing to expand in this way to exert a greater pressure inside the bag and thus a larger conditioned shot in the welds that define the inside of the ice cube bag and that divide the inside of the ice cube bag into individual compartments for ice cubes. Figure 2 illustrates the first and preferred embodiment of the ice cube bag that illustrated in Figures la and Ib after the ice cube bag 10 has been filled with water, has been closed by means of a self-closing effect , as described in the aforementioned European patent, and the European patent application published above mentioned and after the water contained inside the ice cube bag and contained in the closure pockets defined behind the folded parts 16 and 18 of the sheets 12 and 14, respectively, has been frozen. During filling with water the individual compartments for ice cubes in the three sub-compartments of the ice cube bag are filled with water, and the water fills the inside of the inlet channel with what runs to the closing pockets above mentioned when the bag is turned from top to bottom. During water filling of the ice cube bag, water will usually not be passed to the two expansion chambers that are not vented, whereby small air pockets will be confined to these expansion chambers. When the ice cube bag is then turned upside down for the production of the self-closing function, the air in these air bags is allowed to come out and be distributed inside the ice cube bag making, correspondingly, water enters into the expansion chambers 40. In this way, the liquid pressure inside the ice cube bag is reduced. During freezing the water expands, as explained above, causing the sheets of the ice cube bags to be suspended since the sheets do not burst due to the expansion of the water, due to the pressure reduction provided by the expansion chambers 40, according to the explanation given above . In Figure 2, the ice cubes produced by the water that has penetrated the expansion chambers and frozen to ice in them are designated with the reference number 42 and above these ice cubes a small air space is illustrated. definite. Thus, it should be remembered that during common use, which is also a provision with reference to the frozen bag illustrated in Figure 2, the ice cube bag is placed in a deep freezer or in a freezer cabinet resting on one of the sheet walls, or rather the rear end sheet wall and not visible in Figure 2. After freezing the water, as described above, the individual ice cube compartments will be tightly distended by the confined ice cube in the compartment for ice bucket. In addition to the individual ice cube compartment, the areas between the ice cube compartments, that is, between the spot welds 23 and 25 are filled with ice, are filled with distending ice from the intermediate sheet and by means of the the strip strip of these intermediate point welds 22 and 24, and similarly the distension of the sheets correspondingly conditions the shots in the border welds, that is, the two line welds 20, the bottom weld 21, the welds 27 with slope out and divergent and welds 26 of the line of compartments. Thus, in accordance with the disclosures of the present invention it has surprisingly turned out that this dimension of the sheets in combination with the limited area extension of the spot welds 22, 23, 24 and 25 illustrated in the Figure makes it possible to tear and simple and predictable separation of the sheets 12 and 14 to remove the ice cubes from the inside of the ice cube bag. This phenomenon is illustrated in Figures 3a and 3b. In Figure 3a the middle sub-compartment in the ice cube bag 10 illustrated in Figure 2 is folded around an imaginary line through the medium horizontal spot welds in the ice cube bag, the sheet being outside, that is to say, the sheet 12, is distended by on the ice cubes 12 confined behind the sheet 12. In this way, a shot is made on the sheet 12 which is actually concentrated in the spot welding that is in the folding line and thus the fold line of the ice cube bag resulting in the tearing and separation of these spot welds as the sheet 12 is torn free of the welding spots so that the sheet is produced a number of perforations 33 in original locations and until the folding of the ice cube bag is provided with spot welds. In this way, as illustrated in Figure 3a, the material coming from the spot welds will be torn free of the sheet 12 and then in contact with the sheet 14 which is behind. When continuously folded, the stretching of the sheet 12 produces an additional stretch in the perforations 44 produced which finally as illustrated in Figure 3b conditions a complete tearing and separation of the sheet 12 according to a line through the perforations 44 described above with reference to Figure 3a. In Figure 3b the broken edge of one of the halves of the sheet 12 is designated with the reference numeral 46. Next, the total of the eight ice cubes, one of which is designated with the reference number 48 and which has previously been confined to the middle sub-compartment of the ice cube bag 10, they are accessible and can be immediately removed from the bag for ice cubes 10 broken. In this respect it should be noted that when possible to fold. the bag for ice cubes by means of a small force provide an extremely large force in the areas of the blades that make butt in the horizontal point welds as being folding the bag for ice cubes is used a substantially larger force in comparison with the force transmitted by the pull of the spot welds locally opposite the individual point welds. Figure 4a is a sectional and more detailed illustration of the tearing and separation of the knit welds of Figure 3a during the first part of tearing and separating or opening of the ice cube bag 10, illustrating Figure 4a as the distension of the upper sheet 12 and the pressing of the sheet over the ice cubes produces a tearing of the sheet 12 from the knitted welded areas and results in the production of perforations 44 in the sheet 12. The additional fold of the bag for ice cubes 10 as illustrated in Figure 4b conditions a continuous stretching of the sheet 12 which finally breaks on the line 46 by means of the perforations 44 illustrated in Figure 4a. Figure 5 is an illustration of a second embodiment of the ice cube bag according to the present invention. This second embodiment is in its entirety designated with the reference number 101 and differs from the embodiment 10 described above with reference to Figures la, Ib and 2 of the drawings in which line seals 26 are omitted, and a total of five transverse or horizontal sets of welds, each of which consists of thirty-nine point welds 22 placed at identical small mutual distances have instead been provided, and each of the perpendicular sets of point welds consists of four welds 25. In this way, according to the disclosures of the present invention, it has been understood that not only the given size of the weld spot seen in relation to the thickness of the sheet and the material of the given film determine the function of tearing and separation, including the first perforation as described above with reference to Figures 4a and 4b, but also other factors, including the Mutual stability between the spot welds and their distance to other welds, whether line welds or spot welds, are of importance to and decisive as to whether the spot weld, after the inside of the ice cube bag has Once filled with water and then the water has been frozen in ice cubes, it can perform the perforation function illustrated in Figure 4a as well as the separation and separation function illustrated in "· Figure 4b. In Figure 5 the small distance between the relatively small point welds 22 in the five transverse weld assemblies 22 conditions that a fold of the ice cube bag around a line through these spot welds 22 Relatively small ones placed at a small mutual distance will cause a tear and separation of the bag as illustrated in Figure 6a and which functionally corresponds to the description above made with reference to Figure 4a and 4b. Correspondingly, the relatively large distance between the two relatively large point welds 25 in the perpendicular formation of compartments of the bag 101 for hubs means that unless the bag is exposed to extremely large folds these point welds 25 will only allow and will enable a perforation of the wall of the sheet as illustrated in Figure 6b which corresponds to the above description with reference to Figure 4a allowing the ice cube bag 101 illustrated in Figure 5 to be 25 manipulated in a manner in which first the ice cube bag 101 is folded or bent in lines through the straight point welds causing these point welds to be torn and separated for the production of perforations and the removal of the production of perpendicular compartments following which a folding of the ice cube bag in a line through the spot welds 22 will tear apart the sheet walls as illustrated in Figure 6a and allow immediate admission to the eight ice cubes disconnected within the tear line. Figure 7a is a third embodiment of the ice cube bag according to the present invention, whose third mode in its entirety is designated with the reference numeral 10n. This third embodiment differs from the first and preferred embodiment described above with reference to Figures la, Ib and 2 of the drawings in which the four horizontal line welds 26 have been omitted and replaced by two additional sets of horizontal point welds which correspond to the three sets of horizontal point welds described above with reference to Figure la and produced in three sub-compartments in the first embodiment illustrated in Figure la. The third embodiment of the ice cube bag according to the present invention illustrated in Figure 7a also differs from the embodiment described in Figure 1 in that the amount of spot welds in the horizontal and perpendicular point weld assemblies. differs from the amount described above. In this way, tests carried out have proved that the amount of spot welds can also be of importance in the first place for the pressure resistance of the ice cube bag since the distension of the sheet in the compartments for ice cubes Individuals produce a larger component of force or a larger shot in the middle of the side edge of the compartments for individual ice cubes. If, therefore, there is a spot weld in the middle of the side edge of an ice cube compartment, this spot weld will be exposed to the largest stress and therefore the pressure resistance of the cube bag. ice can be increased by avoiding placing any point welds at this midpoint and therefore making the horizontal and perpendicular point welds an even quantity, for example, 4, 6 or, as illustrated in Figure 7a, 8 welds knit in the horizontal and also perpendicular knit weld assemblies. Furthermore, this third embodiment differs from the two previously described embodiments in that the outward slope and the diverging welds 27 illustrated in Figures la and 5 have been replaced by rectilinear linear welds 27 '. The third embodiment illustrated in Figure 7a may in accordance with the disclosures of the present invention be manipulated in numerous alternative ways, allowing the horizontal sets of spot welds to tear and separate the ice cube bag in a line through of such a set, and allowing the perpendicular sets of spot welds to tear the bag in a perpendicular line through such a set of perpendicular knit welds. Alternatively, by twisting the ice cube bag as will be described below with reference to Figure 15 it is possible to produce a tear and separation of the spot welds without simultaneously tearing and separating the sheets and thus converting an ice cube bag with compartments in an ice cube bag without compartments, the individual point welds being in the horizontal as well as the perpendicular point welds only exposed to a tension that conditions a perforation of one of the sheet walls corresponding to the previous description with reference to Figure 4a of the drawings. Figure 7b is an illustration of a detail of a third modified embodiment of the ice cube v bucket according to the present invention in relation to the 5 described above with reference to Figure 7a. The above-described line welds, that is to say, the side welds 20, the bottom weld 21, the top welds 21 a and 21 b and the welds 27 ', 30, 32, 34 and 38 can according to the disclosures of the The invention is intended to be produced as uninterrupted line welds or alternatively to be produced as a combination of point welds tightly disposed in a line or several line assemblies as illustrated in Figure 7b. Figure 7b 15 is an illustration of a lower right corner of a modified embodiment of the third embodiment 10"of the ice cube bag according to the present invention in which the side weld 20 and the lower weld 21 have been replaced, each by two series of 20 offset point welds of the same geometric extension as the point welds 22 and 24 described above. Two point welds in the inner row and in the outer row of these two series of point welds, together constitute the side weld, which 25 are designated with the reference numerals 20 * and 20", respectively, these two series of point welds displaced in relation to each other cause a distension of the sheets when the ice cube bag is filled with water so that the The sheets are pressed together and held tightly to the water pressures that are produced by the water column inside the ice cube bag Figure 8 is an illustration of a fourth embodiment of an ice cube bag. according to the present invention, whose fourth embodiment as a whole is designated with the reference number 10II.X This fourth embodiment of the ice cube bag according to the present invention differs from the first embodiment described above and the third embodiment described above. that centrally in the bag for ice cubes are provided two crossed welds 26 'configured in line segment to obtain a bipartition of the interior of the bag a for ice cubes. In addition, this fourth embodiment of the ice cube bag 101"allows handling of the ice cube bag after freezing the ice cubes according to the handling described with reference to Figure 2 or alternatively the handling described above. with reference to Figure 7a, that is, by tearing out the ice cubes from one of the halves of the interior of the ice cube bag or removing the compartments in one of the halves or both halves of the interior of the ice cube bag Figure 9 is an illustration of a fifth embodiment of the ice cube bag according to the present invention This fifth embodiment as a whole is designated with the reference numeral 10IV. described, the ice cube bag 10IV is a self-closing bag and is constituted by the two sheets 12 and 14 described above with associated parts 16 and 18 Correspondingly, the fifth embodiment illustrated in Figure 9 contains the two lateral welds 20, the lower weld 21, the two lower welds 21a and 21b and the inlet channel defined by the welding assemblies 30, 32 and 34. Likewise, the ice cube bag 101V has two horizontal line welds 2 'corresponding to the semicircular weld extensions 32 described above with reference to Figure 7a, the welds 27 being interrupted to generate two expansion chambers 40' on each side of the input channel. The ice cube compartments inside the ice cube bag are divided into four sub-compartments in the form of a column by means of three sets of perpendicular welds 29 arranged from positions above the lower weld 21, which is illustrated in FIG. Figure 9, up to the positions immediately below the welds used 27 'and each one comprises a large number of unique welds in line segment-shaped welds constituting a total weld line in accordance with the disclosures of the present invention. Alternatively, the perpendicular welds 29 may be constituted by point welds or line segments. Like the four embodiments described above, the 10zv bag for ice cubes is a bag for ice cubes, for the production of twenty-four ice cubes and each of the four sub-compartments in the form of a column are, therefore, divided by medium of four individual sets of horizontal spot welds 22 in six ice cube compacts. These horizontal point weld assemblies are produced and are configured identically to the horizontal point welds 22 described above with reference to Figure 1 in the first embodiment of the ice cube bag according to the invention, which is illustrated in the Figure the. The fifth mode 10IV is characterized by being provided with tearing and separating elements which are arranged as a perforation 52 running from the upper part of the ice cube bag through the upper welds 21a and 21b and down to the welds 27 ', these perforations being, so to speak, confined between the two sets of parallel line welds 49 and 50 which at the same time serve for the purpose of preventing water from the expansion chambers 40 from penetrating through the perforations 52. The fifth embodiment of the ice cube bag according to the invention illustrated in Figure 9 is filled in the same manner as the four embodiments described above and is closed using the self-closing function described in the above-mentioned European patent and the European patent application mentioned above. After freezing, the ice cube bag 10IV can be torn and separated immediately as illustrated in Figure 10 with the ice cube bag being torn and separated in the perforations 52 causing tearing and separation to continue down through the ice cubes. the corresponding welding 29. The admission to the twelve ice cubes confined in one of the halves of the ice cube bag is obtained by tearing and separating the ice cube bag on one side, that is, on the right side or on the the left side in the inlet channel and continuing downwards through the weld 29 disposed next to the perforations 52. These twelve ice cubes can be removed immediately using the sheet tearing technique described above with reference to Figures 4a and 6b of the drawings to release the individual ice cubes. It should be noted that this division of the individual ice cubes or separation of the ice cubes from each other by tearing apart one of the sheets, for example, the sheet 12, as illustrated in Figures 4a and 6b, can instead be used to separate the individual ice cubes from each other before the ice cube bag is torn and separated by using the perforations 52 described above. Figure 11 is an illustration of the sixth embodiment of the ice cube bag according to the present invention which is designated in its entirety with the reference number 10v. This embodiment corresponds substantially to the third embodiment 10111 described above with reference to Figures 7a of the drawings, the spot welds 22, 23, 24 and 25 of the sixth embodiment 10v illustrated in Figure 11 being replaced by small rectangular welds having substantially the same extent in areas as the point welds 22 and 24 described above. The welds of compartments formation in. the bag for ice cubes 10v. it comprises sets of welds 22 'of rectangular configuration placed on a horizontal line with the longitudinal axis of the individual rectangles perpendicular to the horizontal line in question. The welds in the compartments for perpendicular ice cubes in the ice cube bag 10v are, on the other hand, placed with the individual rectangles in the welds 2 'configured in rectangles arranged according to the direction of the formation line of the compartment, that is, with the individual solders 24' one in continuation of the other. According to the disclosures of the invention, this orientation difference of the welds 22 'and 24' of rectangular configuration conditions, in correspondence with the preceding description with reference to Figure 5 of the drawings, a difference in the tendency to allow a tearing and separation according to the rectangular shaped solders, the ice cube bag 10v shown in Figure 11 demonstrating a greater tendency for it to be torn and separated according to the perpendicular welds 24 'of rectangular configuration placed one after the other. the other and in this way have a smaller mutual distance than the horizontal solders 22 'of rectangular configuration, preferably constituting elements for the elimination of the compartments of the ice cube bag according to the technique described above with reference to the Figures 4a and 6 of the drawings. Figures 12 and 13 are illustrations of a seventh embodiment and an eighth embodiment, respectively, of the ice cube bag according to the present invention which are designated with the reference numbers 10I and 10VI1, respectively. As the embodiments described above these two embodiments are produced from the two sheets 12 and 14 described above and joined by means of the side seal 20, the bottom weld 21 and the two upper welds 21a and 21b already described. The two bags for ice cubes 10VI and 10v "are provided with the two welds 27 in outward and divergent slopes described above; however, unlike the embodiments described above, they are not provided with break elements. The compartments for internal ice cubes in the seventh embodiment 10V1 and in the eighth embodiment 10v "are produced substantially in accordance with the compartments illustrated in Figure 7a of the drawings with horizontal and perpendicular point welds 22, 23 and 24, The seventh embodiment illustrated in FIGURE 12 is produced with a single weld 28 of the central perpendicular line, while the eighth embodiment 10VI1 illustrated in FIGURE 13, in addition to the welding 28 of the central perpendicular line is provided. of a horizontal line weld 26 '' which crosses the perpendicular line weld 28, but without connecting to the side welds and thus establishing connection of the upper half of the internal ice cube compartment, that is to say half of the compartment for cubes of internal ice placed by on the welds of line 26 'to the lower half provided below the line welding to 26 ''. The input parts in the seventh embodiment and the eighth embodiment of the ice cube bag according to the present invention which are illustrated in Figures 12 and 13 of the drawings, respectively, are provided with an input channel of a configuration that substantially corresponds to the configuration of the input channel described above with reference to the Figure of the drawings. The input channel in the ice cube bags 10VI and 10VI1 is treated in this way defined by two welds 30 that converge from the inlet channel to the internal ice cube compartment of the ice cube bag, being arranged in two welds 32 'configured in 5 quadrant in the restriction defined by these welds. Also, in the restriction there are provided two rectilinear welds 3 1, which compared to the rectilinear welds 34 described above illustrated in the Figure only extend inward from the 10 restriction towards the compartment for cubes' of ice., Internal of the bag for ice cubes. Above the restriction, two point welds 35 are provided which serve to hold the sheets together in the inlet channel. In embodiments 10V1 and 10v illustrated in Figures 12 and 13 of the drawings, respectively, the right weld 30 is discontinued to establish connection with the chamber 40"so as to produce an expansion chamber corresponding to the expansion chambers 40 described above. In a similar manner, the left weld 32 'configured in quadrant is interrupted to establish connection with another expansion chamber 40' '', in which a number of point welds 54 is similarly provided to limit the volume of the quantity of liquid that can expand into said expansion chamber. Embodiments 10VI and 10VI1 illustrated in Figures 12 and 13, respectively, are also arranged to be torn and separated by tearing the inlet channel of the ice cube bag after the water contained in the ice cube bag. Ice is frozen to ice. In correspondence with the perforations 52 described above, for these perforations 52 'of tear and separation function have been provided, disposed from the side welds 20 inwards in the direction of the welds 32' in quadrant configuration. The perforations do not extend past these line welds, and similarly, for limitation of the perforations 52 corresponding to the line welds 49 and 50 that are illustrated in Figure 9, the line welds 56 and 58 are provided for connect the line welds 20 with the welds 321 configured in quadrant and also reinforce the sheet material. behind or immediately continues to perforations 52 ·. The self-sealing bags illustrated in Figures 12 and 13 are filled with water and closed in the manner described above and more detailed than described in the abovementioned European patent and in the published European patent application mentioned above after which the water contained in the internal ice cube compartments of the ice cube bag in question is frozen by arranging the ice cube bag in question in a deep freezer, a freezer cabinet or in another room cooled to a temperature below freezing point After the water in the individual ice cube compartments has been frozen to form ice cubes, the entire internal part, ie the area above the perforations 52 * in the ice cube bags 10VI and 10VI1 can be torn and separated to allow the ice cubes contained inside the ice cube bag to be admitted through the second torn segment and thus separated from the inlet channel, the individual ice cubes being able to be manipulated and removed from the bag for ice cubes using the separation of the sheets and the elements for tearing and separating the sheets that are conditioned to the shaped, horizontal and perpendicular welds in the ice cube compartments of the ice cube bag. The eight embodiments described above are so-called self-closing bags and are also bags for the production of twenty-four ice cubes. However, it should be noted that the disclosure of the present invention is not limited to self-closing bags and is not limited to a specific amount of ice cubes, since in the ice cube bag implemented according to the disclosures of the present invention, you can have an arbitrary number of compartments for ice cubes for a quantity of more or less twenty-four cubes, for example 12, 16, 18, 30 and 36, etc. Correspondingly, the entrance part of the ice cube bag can be produced without the self-closing function, for example with a funnel-shaped part for closure by means of a knot closure or alternatively by means of a knot closure of the type described in US Patent No. RE 31890, to which reference is made, and whose patent US is incorporated herein by reference. It should also be noted that a combination of a self-closing bag and a bag with a knot closure can be made by combining, for example, the technical principles described in the aforementioned US patent and the technical principles set forth in the above-mentioned European patent and in the application. of European patent mentioned above. By combining self-closing and knot closure in an ice cube bag, a special advantage can be obtained in that in the self-closing bag the internal liquid pressure can be increased when the knot closure occurs. Figure 14 is an illustration of a ninth embodiment of the ice cube bag. according to the present invention, whose mode is designated in its entirety with the reference number 10B. This ice cube bag differs from the ice cube bag described above in that the ice cube bag constitutes a knot bag, ie the ice cube bag which, unlike the self-closing bags described above; it is closed by tying a knot by means of fins provided in the inlet channel of the ice cube bags according to the technical disclosures described in the above mentioned United States of America patent. Thus, the ice cube bag 10vm is, unlike the self-closing bags described above, produced from two sheets which one, that is, the upper end sheet designated with the reference number 12 ', do not it is provided with thin parts corresponding to the folded parts 16 and 18 described above illustrated in Figure 14. The sheets in the ice cube bag 10VI "are welded together by means of two side welds 20, the inner weld 21 and the two welds 21a and 21b Also, the interior of the ice cube bag is limited by the two rectilinear welds 27 'which, unlike the rectilinear welds 27' illustrated in Figure 7a are not interrupted for the establishment of an expansion chamber On the contrary, the rectilinear welds 27 'connect the lateral welds 20 with two rectilinear welds 30 * which connect the upper welds 21a and 21b with the solids rectilinear datura 27 mentioned above. Above the rectilinear welds 27 'there are cuts designated with the reference numerals 52' 'or perforations corresponding to the perforations 521 illustrated in FIGS. 12 and 13 and which go up immediately before the rectilinear welds 30' which together constitute a Funnel shaped inlet channel are made from the sides of the ice cube bag. The ice cube compartment of the ice cube bag illustrated in Figure 14 is divided into 3 perpendicular sub-compartments by means of two perpendicular linear welds 28 corresponding to the perpendicular linear welds 28 described above with reference to the Figures 12 and 13 of the drawings. Each of the individual sub-compartments configured in columns in the ice cube bag 10 I "are also divided into 6 compartments for ice cubes by means of horizontal point weld assemblies, each set containing in total 10 welds of ice. point 22. In this way, the ice cube bag 10vm shown in Figure 14 serves to produce 18 ice cubes which with the same external dimensions of the sheets of the embodiments described above serve for the production of cubes of ice. Larger ice The ice cube bags 10VI1 are used in the following way: Water is poured through the funnel formed by the rectilinear linear welds 30 ', filling in this way with water the three sub-compartments configured in columns. After tearing the perforations 52"two fin-shaped portions are produced at the upper end of the ice cube bag and these fin-shaped parts are tied by making a knot to close the inside of the ice cube bag. The ice cube bag is frozen for the production of the ice cubes following which, according to the claims of the invention, the ice cube compartments made as compartments inside for ice cubes can be converted into ice cubes. a compartment for ice cubes without divisions and also advantageously cracked by means of spot welding 22 features of the present invention. The illustrated perpendicular line welds can be. replaced by spot welds, for example, which correspond to the point welds 25 described above. Also, the ice cube bag 10v illustrated in Figure 14 can be immediately modified to a self-closing ice cube bag by replacing the sheet 12 * and correspondingly the sheet that is behind by the sheets 12 and 14 described above , causing the folded portions of these sheets to be elongated downward to a position opposite to the perforations 52"that are omitted. At the same time, the inlet funnel 30 'can be modified to another configuration for example by replacing the inlet funnel 30' with a two-part inlet funnel with the outer end part or first inlet part with the same sloping configuration that the funnel configuration illustrated in Figure 14 and on the other hand entry produced with welds perpendicular or a little inwards or inclined outwards. As mentioned above, Figure 15 is an illustration of the third embodiment 1011 illustrated in Figure 3 after the ice cubes have been frozen after which the ice cube bag is manipulated, ie, twisted, folded , or folded and twisted in combination, to be converted into an ice cube bag without compartments or alternatively to be torn by using the tear and separation technique characteristic of the present invention, using the directions of tearing and separation of the welds 22, 23, 24 and 25 features of the present invention. The entry part or filling part illustrated on the right-hand side of Figure 15 can after freezing be advantageously used to hold the bag with ice cubes and thus to manipulate the ice cube bag and, likewise, it can be as described above with reference to figures 12 and 13 advantageously used to tear and remove the upper part or filling part of the ice cube bag to remove ice cubes or ice cubes from the inside of the cube bag. ice. Figure 16 is an illustration of the third illustration lO1 also illustrated in Figures 13 and 15 of the drawings after the ice cube bag during handling described above with reference to Figure 15 has been converted from a bag for ice cubes to ice with compartments in a bag for ice cubes without compartments.

In Figure 16, the bag is illustrated supported on a support plane, for example, the top of a table with perforations 44 in the sheet 12 provided in the right half of the internal chamber of ice cube bag, as above described, while correspondingly on the left side of Figure 16 perforations are provided in the opposite sheet by bending or twisting the sheet in the opposite direction in the left half compared to the right half. Thus, the spot welds 22 and 24 illustrated on the left side of the ice cube bag 1011 contain tears of material from the opposite sheet in which corresponding perforations have been provided corresponding to the perforations 24 illustrated in FIG. the sheet 12 in the right half of the interior of the ice cube bag. Figure 17 is an illustration of a tenth embodiment of the ice cube bag according to the present invention, whose tenth form in its entirety is designated by the reference number 101 *. This tenth embodiment of the ice cube bag is largely similar to the third embodiment of the ice cube bag according to the present invention which is illustrated in Figure 7a and constitutes a self-closing bag. The tenth embodiment is composed of the two sheets 12 and 14 described above, of which only the sheet 12 is illustrated in Figure 17, these sheets being welded between, if by means of the side welds 20, the bottom weld 21 and the two welds 21a and 21b. Of the upper welds 21a and 21b, two arc welds 30"are directed inward toward the interior of the channel that goes into the interior of the ice cube bag continuing into the upwardly sloping side welds 27". to the sloping side welds 27 illustrated in Figure 7a. Like the side welds 27, the side welds 27 '1 upwardly sloping are interrupted for the establishment of the connection through the welds 36 and 37 with the expansion chambers 40. The inner compartment of ice cubes of the bag for ice cubes 101X is divided into 24 compartments for individual ice cubes by means of the point welds 28 and 24 described above, characteristics of the present invention. As is evident in Figure 17, the upper point weld in the middle row in the middle row of the perpendicular knit welds is disposed as a larger knit weld, this top knit weld being positioned immediately below the knit channel. entrance exposed to the greatest water pressure of all point welds during the filling of the ice cube bag. The mode of the input channel illustrated in Figure 17 serves to accelerate the filling compared to the input channels described above and illustrated. Figure 18 is an illustration of an eleventh embodiment of the ice cube bag according to the present invention, whose eleventh embodiment in its entirety is designated with the reference number 10x. This eleventh embodiment has a number of the features described above with reference to Figures 1-17 of the drawings, this eleventh embodiment constituting self-closing bags as several of the embodiments described above in side welds 20, a modified modified lower weld 21 ' by three semicircular parts corresponding to a division of the interior of the ice cube bag in three sub-compartments and the upper welds 21a and 21b. The input channel of the ice cube bag occurs in correspondence with the input channel described above with reference to the Figure of the drawings; however, modified because the welds of perpendicular lines 34 are replaced by the line welds 3 'which are illustrated in Figure 12 and Figure 13 of the drawings. In addition, this eleventh embodiment has the same lateral welds 27 downwardly sloping as described above, with associated perforations for establishing the connection with the S expansion 40 through channels defined by line welds 36 and 37. The ice cube bag inside the ice cube bag is divided into 3 individual compartments for ice cubes that are delimited by 3 sets of solder joints. point, 10 each of which contains a large amount of spot welding 25, for example, 84 spot welds. Therefore, by means of this eleventh modality, 3 large ice cubes or ice cubes can be produced that can be removed in accordance with 15 the tearing and separation technique, characteristic of the invention by means of the spot welds 25 as described above. Also, the disclosures of the present invention make it possible to provide bags for ice cubes with v. , A very large number of individual compartments for ice cubes as is evident from the Figure 19a and 19b illustrating a twelfth embodiment and a thirteenth embodiment, respectively, of the present invention, which are designated with the reference numerals 25 10xi and 10xli, respectively. Both of these two embodiments 10 and 10 constitute self-closing pockets delimited by the side welds 20, the bottom weld 21 and the top weld 21a and 21b. Also, the two embodiments 10xi and 10xli are produced with a filling channel inlet corresponding to the one described above with reference to Figure 17 of the drawings constituting two arc welds 30 '· of the channel directed downwards to the interior, continuing directly down to the sloping side welds 27 described above with reference to the figures of the drawings. The perforation line 52 * 'is provided under the edges 17 and 19, respectively, defined by the folded sheet portions 16 and 18 (in Figure 17 only one of the folded portions 16 with the associated edge 17 is illustrated) either to establish a knot closure as indicated above, ie, a self-closing and a combined knot closure of the interior of the ice cube bag or alternatively to tear off the upper part of the ice cube bag after freezing the column of water contained inside the bag for ice cubes. The two bags for ice cubes 10 ** and 10xli are divided into a large number of compartments of ice cubes. individual, only delimited by corner point welds implemented in accordance with the disclosure of the invention and the same disclosure as that described above with reference to the figure of the drawings and designated with the reference numeral 23. In Figure 19a, the spot welds 23 are arranged at the corners or S the corner points of an orthogonal configuration, while the point welds 23 in the thirteenth 10xii mode illustrated in Figure 19b are placed in a configuration in which the spot weld placed in horizontal lines in each second 0 line they are displaced in the middle of a square or point weld distance to one side, causing the ice cubes or ice cubes produced with the ice cube bag illustrated in Figure 19b to be of rhomboidal configuration, while the ice cubes 5 or the ice cubes that are produced in the ice cube bag illustrated in Figure 19a will be of substantially square configuration. By means of the embodiments illustrated in Figure 19a and 19b of the drawings, an extremely large pair amount of individual ice cubes or ice cubes can be produced. In the embodiments illustrated, they can produce more than 200 cubes of ice or individual ice cubes. Figure 20a is an illustration of a fourteenth embodiment of the ice cube bag according to the present invention, whose fourteenth modality in its entirety is designated with "reference number 10X11." This fourteenth modality constitutes a knot bag thereof. type illustrated above and described with reference to figures 14, 19a and 19b and additionally constitutes a modality that as the section of a modification of the third embodiment of Figure 7a that is illustrated in Figure 7b is produced by means of point and line cement welds, exclusively, and not Contains coherent peripheral welds. Also, this fourteenth embodiment has a number of features described above with reference to Figures 1-19b of the drawings. The ice cube bag 10xii is provided with 20 '' shaped welds in line segment, which in part constitute a peripheral circumferential weld that defines the ice cube compartments and partly in extensions constitutes lateral welds that are connected with the upper welds 21a 'and 21b * composed of a number of individual parallel line segments. The entrance channel of the ice cube bag is designed as a single funnel, also constituted by individual welds formed with line segments, forming rectilinear welds that converge to each other and form the aforementioned funnel and connecting the upper welds 21a and 21b constituted by line segments to the side welds 27 · · connecting the funnel of the inlet channel with the side welds formed by the line segments 20"." The interior of the ice cube bag is divided by four. perpendicular compartments by means of the point welds 24 'and 25', these four interior compartments being perpendicular in turn divided into a number of sub-compartments by means of horizontal welds formed by spot welds 22 'and 23'. point 22 ', 23', 24 'and 25' which are illustrated in Figure 20a correspond to the spot welding described above; however, the spot welds 22 'and 24' are preferably designed as elongated welds instead of circular welds, and similarly the welds 22 ', 23', 24 ', and 25' may be designed as massive single welds or constituting contour welds, the interior of which does not constitute unions of the two opposite sheets of the ice cube bag. Like the ice cube bags described above, the interior of the ice cube bag can be designed as an ice cube bag having 16, 20 or preferably 24 compartments.

Figure 20b is an illustration of a modified ice cube bag compared to the embodiment of the ice cube bag illustrated in Figure 20 or rather a lower end part of this modified or fifteenth 10xiw modality of the bag for ice cubes according to the present invention. Similar to the fourteenth embodiment illustrated in Figure 20a, the fifteenth embodiment illustrated in Figure 20b is especially characterized in that the peripheral welds include the side welds and the lower weld which are formed by welds formed with line segments. . In contrast to the fourteenth embodiment illustrated in Figure 20a, in which the welds 20 '' 'formed by line segments are all placed perpendicular to the general orientation * of the weld and thus radially or perpendicularly to the weld peripheral composite of the weld formed with line segments, the corresponding welds 20"'formed by line segments constituting the side welds in the fifteenth embodiment illustrated in Figure 20a, are placed at an angle i in relation to the General orientation directed according to the longitudinal axis of the ice cube bag. In Figure 20b, these welds 20 '' 'formed with line segments are placed in a slope direction relative to the perpendicular or horizontal orientation. In addition, the fifteenth embodiment 10xiv, which is illustrated in Figure 20b shows a lower weld composed of a number of welds 21"* * formed with individual line segments, all of which are of the same extent, ie of the same length in width, but alternatively they can be of varying length and width, this weld being 21"1 formed with segments of line placed, in total, in six parallel rows, two adjacent rows being displaced mutually in half the length of a segment of individual line forming the weld 21 * ''. In correspondence with Figure 20a, Figure 20c is an illustration of a 16th embodiment of the ice cube bag according to the present invention, and in a manner similar to the 14th embodiment illustrated in Figure 20a, this 16th embodiment, which is designated in its entirety with reference number 10xvr constitutes a so-called knotted bag. In addition, the 16th embodiment illustrated in Figure 20c differs from the 14th embodiment illustrated in Figure 20a because the welds formed by line segments illustrated in Figure 20a that constitute the peripheral weld, side welds 27 ' ', the upper welds 21a' and 21b 'and the inlet channel 30 *' are replaced by strips of smaller welds that are placed in a tight configuration in the form of a photographic frame configuration in which the welds of individual points are of substantially smaller diameter b size, as compared to spot welds 22 ', 23 *, 24', and 25 'of compartment formation, typically less than 50% of the largest dimension of these spot welds 22 ', 23', 24 ', and 25'. The individual spot welds in the photographic frame configuration forming the weld constituted by the spot welds 201V are positioned at a distance from the adjoining welds which substantially corresponds to the diameter of the individual welds 20iv. Of course, within the scope of the present invention, the embodiments illustrated with reference to figures 20a, 20b and 20c of the drawings can be modified in correspondence with the embodiments described above and, in addition, can be combined by themselves with embodiments alternatives of lateral welds, lower welds and channel entrance welds. Figure 20b is a schematic and plan view of a l * 7th modality of the bag for cubes according to the Invention, whose bag for cubes according to the invention, whose bag in its entirety is designated with the reference number 10x i. In a manner similar to the embodiments described above, the ice cube bag 10xvi is composed of two identical sheets, preferably sheets of low density polyethylene in a thickness of 25 microns or alternatively sheets of high density polyethylene of a thickness of 18 microns where whose sheet is designated with the reference number 12. Both sheets have a folded part. The folded portion of the sheet 12 is designated with reference number 16. These folded portions project inwardly into the ice cube bag and opposing inner edges are formed. The sheets are of substantially rectangular configuration and are in superposed positions, projecting the folded parts as described above inwardly into the interior of the ice cube bag 10xvi, since the sheets are joined by means of a substantially circumferential union 20iv, two joints lines arranged inwardly and one toward the other from the substantially circumferential junction 201V positioned at an upper end of the ice cube bag 10 * vi illustrated in Figure 20b and the upper line junctions 21a '' and 21b1 '.

Between the line junctions 21a '' and 21b '· an opening is provided which leads from the surroundings into the interior of the cube bag. 10XV1 ice. From the edge described above, the rectilinear junctions 30iv that converge with each other extend, forming a first funnel-shaped section of the entrance channel of the ice cube bag. At the internal ends of the joints, that is to say in the restriction of the generated input funnel, the rectilinear junctions 30iv that converge with each other extend into two parallel rectilinear junctions 33 which constitute a first restriction of the input channel, and constitute a transition between the first section of the inlet channel of the above-mentioned ice cube bag and a second section of the ice cube bag inlet channel whose second section is defined by two opposingly placed arched 32"links connecting the joints rectilinear lines 33 described above with the above-described joints 27 constituting two joining reinforcements 33 constituting a second restriction at the end of the inlet channel, that is, at the transition between the inlet channel and the inside of the bag for buckets of ice that is divided into a number of individual compartments as mentioned above. The arc connections 3211 constitute two convex joints for the generation of a second section of the entrance channel, whose second section has, seen in the orientation perpendicular to the orientation of the entrance ^ - of the entrance channel, dimensions substantially more 3 larger than the first restriction generated by the two parallel rectilinear junctions 33, as well as the other restriction generated by the two reinforcements 33, mentioned above. In the seventh modality illustrated in the Figure 10 20d, the exposed internal edges of the folded portions, of the two sheets extend over the entire length of the first section of the inlet channel, but not in the second section of the inlet channel, and precisely to a position opposite to the two rectilinear joints 15 parallel, see the folded part 17 in relation to the parallel rectilinear joints 33. According to the claims of the present invention, the exposed edges may be placed in an arbitrary location along the two parallel rectilinear junctions 23, say, an arbitrary position within the constraint defined by the two parallel unions. In this way, the mentioned edges are placed, seen in the total length of the entrance channel, in the middle of the entrance channel and simultaneously placed 25 perpendicularly in the middle of the two parallel rectilinear junctions 33. By means of the hanging of the folded edges in the middle of the entrance channel in combination with the parallel rectilinear junctions 33, an ice cube bag is obtained which provides a function of safe and reliable self-closing and uses a minimum amount of water to fill the closing wells that provide the self-closing function generated behind the folded parts, as also explained in EP 0 574 496 and EP 0 616 948 and EP 0 825 122 to which reference is made. At the same time, unlike the self-closing bags according to the prior art, the two parallel rectilinear junctions 33 constitute a restriction area configured in tube for the provision of the self-closing function that previously were not considered possible, since the two parallel rectilinear junctions 33 serve the additional purpose, in addition to the provision of a restriction for generating the self-closing function, to compensate for the production of variations, if any, when the folded sheet parts are folded and by means of the joints are joined to the surrounding sheets. To obtain a secure self-closing function it is significantly decisive that the exposed inner edges constituting the closure pockets within the joints 33 that are positioned below the inner limitation of the first funnel-shaped section of the inlet channel, see Figure 20d, to ensure that the closure pockets are filled with water in a reliable manner when the ice cube bag is turned upside down after it has been filled with water as explained in the patents European countries mentioned above. In the flat illustration of Figure 20b, the two sheets of the ice cube bag are arranged continuous with each other in a flat position since there may be confined air and constitute air pockets inside the ice cube bag 10 In Figure 20d, the ice cube bag 10 * vi is illustrated with its inlet opening 26 in an upward direction, whose inlet opening will be in an upward direction when the ice cube bag is filled with liquid, especially water. It should be noted here that expressions such as "upwards", "downwards", etc. that refer to an orientation for the ice cube bag in relation to the orientation determined by the force of gravity should be interpreted as expressions that only serve the purpose of describing the normal general orientation of the ice cube bag in use, since, of course, a larger or smaller part of the ice cube bag can be folded in relation to the direction towards, up, down, and similarly, the ice cube bag 10xvl in its Totality can be maintained in a tilted position in relation to the up, down position. Figure 21 is a schematic view of a production plant for producing bags for ice cubes or similar welded bags in an intermittent production process. The production plant corresponds mainly to the production plant described in DK 172,066 and EP 0795 393 and comprises a stamping and welding station 74. As is apparent from the following description, depending on the product in question, the production plant may also comprise other positions, such as, for example, a sheet unwinding station, a cutting and separating station and a transport station. The production of the ice cube bags in the stamping and welding station 74 comprises a single stamping and welding operation in which the ice cube bags are produced from a section 76 of two sheets, thus producing Two bags for ice cubes in a single stamping and welding operation. The stamping and welding operation is carried out in the stamping and welding station 74, it is carried out discontinuously or intermittently, the sections of sheets being transported by steps of a stamping and welding device 70 being the stamping and welding operation carried out with the two sections of two sheets held in a stationary position below the stamping and welding device 70. The transport of steps of the two sections of two sheets are obtained by means of rollers or rollers driven by an input wheel and belt arrangement. As shown in Figure 21, the stamping and welding device 70 comprises a lower support plate 130 provided with two upright vertical rods 132 and 134 which in turn are connected by means of an upper bar 136 and a crosshead 138 which in conjunction with the support plate 130 maintain the rods 132, 134, in a vertical and mutually parallel position. Crosshead 138 supports two sets of drive cylinders 140, 142 and 144, 146 which are actuated by pressurized fluid inlet hoses connected thereto and preferably in the form of pressure air cylinders. The two sets of drive cylinders 140, 142 and 144, 146 are designed to place the stamping and welding devices in a two-stage process. In the first stage the stamping and welding dies 148 and 150 comprised in the heated embossing devices and the welding devices are raised in a starting position at a maximum distance over the sections of two sheets that are passed through. of the stamping and welding station to prevent the material of the sheets from being fused by the heat radiating from two stamping and welding devices and in the second stage, the stamping and welding dies 58 and 50 are moved from their elevated position at a certain distance over the section of two sheets to a working position in which they are pressed down on the two-layer section as shown in FIG. described below by actuating the drive cylinders 142 and 146. In this way, the two drive cylinders 140 and 144 are designed to place the stamping and welding dies either in the starting position or in the working position, and by drive of the drive cylinders 142 and 146 the stamping dies and welds are lowered to the two-blade sections. The stamping and welding dies 148 and 150 are provided with bottom surfaces comprising protruding protrusions (ie projecting downwards, corresponding to the desired patterns and welds in the ice cube bags being stamped and welded by means of the stamping and welding device 70 in the stamping and welding station The stamping and welding matrices 148 and 150 are electrically heated and therefore comprise a number of electric heating units powered by a number of connecting cables , two of which reference numerals 152 and 154 have been assigned, respectively As will be obvious to those skilled in the art, the stamping and welding welds 148 and 150 are thermoregulated, ie stamping dies and welding are maintained at a well-defined temperature by means of a thermostat, the suspensions of the stamping dies and The welds are cooled by water supplied by means of a cooling water inlet hose 156 and released by means of a cooling water outlet hose 157. In addition to the cooling water arrangement for cooling the suspension of the stamping and welding dies 148 and 150, the production plant is provided with a cooling air hose 158 which is mounted, as shown in the transport direction of the two-lane section, downstream of the stamping dies and complementary welding, the cooling air hose providing cooling air supplied with a number of air supply openings in the air supply tube 160. As will be evident in Figure 21, the two-lane section is inserted below the stamping and welding dies 148 and 150 which, however, are not brought into direct contact with the surfaces of the two-lane sections, or two blades 162 and 164 of heat transfer resistant to high temperatures are inserted between the upper surface of the two sections of two sheets and the lower surface of the stamping and welding dies 148 and 150, and the lower surface of the two sheets and a sheet in the form of a rubber sheet of resiliently supported silicones on the support plates 130, respectively, forming the heat transfer sheets 162 and 164 closed sections, in the form of loops. The upper closed loop formed by the heat transfer sheet 162 is provided with a total of 4 idle rollers 168, 170, 172 and 174 and correspondingly the closed loop formed by the heat transfer sheet 164 resistant to high temperatures and is provided with of 4 crazy rollers 176, 178, 180 and 182.

The stamping and welding station is controlled by a central control unit which is not illustrated in the figure and which also controls regulators to adjust the temperature of the heating units in the stamping and welding dies, for example, the dies of printing and welding 148 and 150, the flow rate of pressurized air supply, etc. In the stamping and welding station, the section of two sheets is transported in a step after which the stamping and welding dies actuated by the actuating cylinders 140 and 144, and 144 and 150 are lowered towards the two sections of two sheets supported on the support plate 130 simultaneously maintaining the two-layer section in a stationary position, the section of two sheets being pressed between the two heat-transmitting sheets 162 and 164 resistant to high temperatures. Heat-resistant heat transfer foils, which are preferably woven Teflon sheets, are designed to transmit heat to the upper surface and the lower surface of the two sections of two sheets during the stamping and welding process in order to provide the two sections of two sheets the two patterns and welds that correspond to the prints provided in the stamping dies without resulting in prints and weak welds and without being cut through the sheets due to excessive local heating in a given area . By pressing together the assembly consisting of the two sheets of Teflon 162 and 164 and the intermediate two-layer gram, the two woven Teflon sheets are pressed and fused into the sections of two fused sheets, thereby adhering the sheets of Woven Teflon 162 and 164 to the sections of two pressed and welded sheets, partially fused. Surprisingly, and what is important, due to the pressing operation the adhesion of the woven Teflon sheets 162 and 164 to the sections of two stamped and welded sheets, the sections of two sheets will not be deformed in the next stage, in the that the transport of the section of two sheets is provided after the stamping and welding dies 148 and 150 are raised since by means of this transport of steps, there is a transport of the section of two sheets welded in the distance that exactly corresponds to the width of stamped and welded ice cube bags. Thus, Figure 21 is a schematic view of a situation in which two segments of sheets are being displaced from a completed stamping and welding operation which has resulted in an ice cube bag that is not evident in the figure, and Figure 21 shows additional ice cube bags 186 and 188 produced - in the two previous stamping and welding stages. When the stamped and welded ice cube bags are transported, for example, the ice cube bags 186 and 188, the woven Teflon sections 162 and 164 support the fused and softened film material which adheres to the surfaces of the sheets. of woven Teflon, and the cooling air supplied by the air supply tube 160 cools the sections of heated sheets and causes the material of the sheets partially fused in the stamps and welds of the ice cube bags to solidify. After the release of the two-layered section of the stamping and welding operation the upper woven Teflon sheet 162 is removed from the upper surface of the welded ice-cube bags, for example, ice cube bags 186, while that the lower woven Teflon sheet 164 is not removed from the sections of two welded sheets, that is, the completed ice cube bags, for example, the ice cube bag 188, prior to the implementation of an additional stage. ? difference from the method described in the Danish patent No. 172,066 mentioned above and correspondingly in published European patent No. 0795393, the modality of bags for ice cubes 186 and 188 as bags for ice cubes in which not only the joints that form compartments, but also the peripheral joints are made as point welds allows the bags for ice cubes welds are left without support immediately after the stamping and welding operation since due to the modality that has spot welding not only in the compartment forming joints, but also in the peripheral joints, a construction of bags for buckets is obtained. ice in which the areas that are not fused directly during the stamping and welding operation and in this way constitute a stretch of two coherent sheets not fused and only partially heated are present in all places. In addition, the modality of the ice cube bags 186 and 188 with spot welds that constitute compartment forming joints as well as the peripheral joints allow the ice cube bags to be established abutting each other tightly and thus, in contrast to the illustration of Figure 21, in which the ice cube bags 186 and 188 are illustrated for clarity purposes separately, they can be placed even abutting each other directly after which a periphery or edge joint of the an ice bucket bowl, for example, a left edge joint of the ice bucket bag 186, coincides with or is consistent with the opposite side edge joint, i.e. the right edge joint of the bucket bag of ice 188. Figure 22 illustrates a second embodiment of the production plant for producing bags for ice cubes or corresponding welded bags. This plant differs from the production plant described above with reference to Figure 21 in that bags for ice cubes or similar welded bags are produced continuously in the production plant shown in Figure 22, while the stamping operation and welding itself as carried out in the production plant described with reference to Figure 21 is carried out intermittently as explained above. Also, the production plant shown in Figure 22 differs from the production plant described above with reference to Figure 21 in that the ice cube bags are produced from two separate sheets 63 and 65 and not from of a stretch of two sheets as shown in Figure 21.? the second embodiment of the production plant according to the invention shown in Figure 22 has filled in the reference number 74 'and comprises, similarly to the production plant described above with reference to Figure 21, preferably also a developed position of sheets and a cutting and separation station. As explained above, the section of two sheets 76 'composed of the sheets 73 and 75 is passed through the stamping and welding station 14' at a constant speed and not variant and not intermittently as in the production plant described above with reference to Figure 21. Instead of a vertically movable stamping and welding device 70, the stamping and welding station 74 'comprises two rotating rollers 157 and 159 driven by the same motor 145 by means of a gear train 147 and of which the roller 157 constitutes the stamping and welding roll, while the roller 159 constitutes a holding roll. On its outer surface, the welding roller 157 is provided with curved hot stamping and welding dies. Figure 22 shows three stamping and welding dies 167 belonging to the rotating stamping and welding roller 157. Similar to the stamping and welding dies 148 and 150 described above with reference to Figure 21, the stamping and welding dies 167 are electrically heated and electrically powered by an electrical conductor 163, the electric power being transferred by means of respective slip rings 161 to the heating units provided in the stamping and welding roll 157. Similar to the production plant described above with reference to Figure 21, the stamping and welding station 74 shown in Figure 22 is provided with woven Teflon sheets 162 and 164, the Teflon sheets testing two opposite closed loops that they are designed to transfer pressing pressure and uniform welding of the rolls 157 and 159 to the section of two sheets 76 interposed between the two Teflon sheets 162 and 164 arranged horizontally, but which also serve to provide support sheets, avoiding the support sheets When pressed and bonded to the Teflon sheets of the fused areas of the two-section stamped and welded sheets, the fused, soft-sheet material is stretched when the finished two-sheet stretch is removed from the stamping and welding station. , essentially as described above with reference to Figure 21. The stamping and welding of the sections of two sheets in the stamping and continuous welding operation for the production of bags for ice cubes that is carried out in the stamping and welding station 14 'results in an interconnected stretch of bags for ice cubes comprising areas corresponding to bags for ice cubes individual finished as indicated by reference numerals 193, and 195, and 197. As in the plant 74 described above with reference to Figure 21, the first floor 74 illustrated in Figure 22 differs from the plant described in the Danish patent mentioned above and the European patent application mentioned above in which the upper Teflon sheet 162 is only in contact with the section 76 of two sheets during the same stamping and welding operation and then does not support the section 76 'of two sheets afterwards. of the stamping and welding operation since the ice cube bags 193, 195 and 197 produced, such as the ice cube bags 186 and 188 that were shown in Figure 21, constitute bags for ice cubes in which the joints forming the compartments as well as the peripheral joints are established by spot welds that increase the mechanical strength and strength of the ice cube bag welded immediately to the prolongation or deformation due to softened plastic material compared to a conventional ice cube bag in which the peripheral welds constitute coherent line welds. Figure 23 is an illustration of a 18th embodiment of a self-closing bag according to the present invention. This eighth 18th mode is in its entirety designated with the reference number 10xvil and differs from the 17th modality 10 * vl described above illustrated in Figure 20d in that the junctions 32 '11 defining the second section of the input channel are constituted by two rectilinear junctions diverging the two parallel rectilinear junctions 33 'which, in relation to the folded edge 17, are symmetrically inverted in relation to the joints 30b which, in correspondence with the joints 30iv illustrated in FIGS. 20d, constitute a first funnel-shaped section of the Input channel. The input channel constituted by the junctions 30b, 33 * and 32 '' 'in the embodiment illustrated in Figure 23 provides a figure that is symmetrically inverted in relation to the longitudinal axis as well as the median line of the input channel that corresponds to the folded edge 17. It should be noted that the eighteenth embodiment shown in Figure 23 differs from the 17th to the mode illustrated in Figure 20d in which the solder 20, 21a, 21b, 30b, 31b, and 321'1 constitute all welds of coherent lines unlike the peripheral welds illustrated in figures 20d constituted by individual points. Likewise, the ice cube bag \. ioxvil differs from the embodiments illustrated in 5 figures I-20d of the drawings in which the compartment forming point welds constitute compartments for hexagonal ice cubes placed in a honeycomb configuration unlike the compartments for square ice cubes of the 10 embodiments described above. The v compartments for hexagonal ice cubes illustrated in Figure 23 are defined by a number of spot welds 23 '1 and 241' where each side edge where each side edge of the compartments 15 for hexagonal ice cubes is defined by four individual spot welds. Although the ice cube bags described above are preferably intended for the freezing of water for the provision of v-20 ice cubes or ice cubes, the ice cube bags, by themselves, or a modified form of the bags for ice cubes, they can be used to freeze other materials, such as food products or provisions to be frozen in small portions 25 individual.

Preferably, the ice cube bags described above are produced in the industry using techniques. of continuous or intermittent welding that are described in the Danish patent No. 172,066 or correspondingly in the published European patent application No. 0 795 393, to which reference is made, these two publications being considered as incorporated in the present specification. EXAMPLE A prototype of the currently preferred embodiment of the ice cube bag according to the invention illustrated in Figures la, Ib and 2 was produced from low density polyethylene sheets with a thickness of 25 microns. Each of the low density polyethylene sheets 12 and 14 of a thickness of 25 microns has a width of 18 cm and a total length of 38.5 cm, each of the folded parts 16 and 18 constituting a fold of a length of 4.5 cm of each of the sheets 12 and 14 of 38.5 cm in total. In this way, the total length of the ice cube bag was 34 cm. Each of the compartments for ice cubes, in total 24 compartments for ice cubes, has a width of 4.5 cm and a length of 4.8 cm. The point welds 22 and 24 for forming compartments were circular spot welds with a diameter of 0.9 mm, while spot welds 23 and 25, also constituting circular point welds, had a diameter of 1-1 mm. When testing this prototype of the currently preferred embodiment of the ice cube bag according to the invention, it turned out that the ice cube bag worked correctly when it was used according to the application to which it was intended. These tests showed that by means of the prototype ice cube bag implemented according to the disclosures of the present invention, the desired tear and separation function and also the desired conversion of an ice cube bag with compartments to a bag for Ice cubes without compartments was obtained. During further tests carried out in a laboratory in another of the embodiments described above, corresponding excellent results were obtained in relation to the tear and separation function and the possibility of converting the ice cube bag from a bag with compartments to a bag without compartments . Especially, these tests showed that the ice cube bags produced with six horizontal and perpendicular point welds corresponding to the third embodiment of the ice cube bag according to the present invention illustrated in Figure 7a could withstand a pressure of 0.9 meters. of water column, while a bag for ice cubes, in other respects identical with the modality illustrated in Figure 7a and with eight perpendicular and horizontal point welds in each set could withstand an internal pressure of 1.3 meters of column Water. On the other hand, a bag for ice cubes that had five or seven point welds in each set could not withstand such pressures. This is interpreted as proof that the distension of the sheet at the center of the individual set of horizontal and perpendicular point welds during the filling of the ice cube bag produces a maximum shot precisely in this center of the separation line imaginary between the ice cubes, and therefore an odd amount of spot welds in these horizontal and perpendicular weld assemblies causes the spot welds that are in the middle in the individual set of spot welds to be exposed to this maximum force influence or this maximum draft, which is not the case when the amount of point welds in the horizontal and perpendicular weld assemblies is even and thus the aforementioned force concentration or the above-mentioned maximum draft is in this way distributed in two point welds instead of on a single point weld, as in the case of a Oddity of knitted welds. While the invention has been described with reference to a number of preferred embodiments, it will be apparent to those skilled in the art that numerous modifications and corrections may be made within the scope of the invention, without departing from the spirit and purpose of the invention as defined in the following claims. Especially, it should be noted that the above-described embodiments can be combined in such a way that the characteristics of a described embodiment can be combined in another specific described embodiment and also the embodiments with compartments described with reference to a number of different ice cube bags. Self-sealing can correspondingly be used in bags for ice cubes that are not self-sealing, for example knot bags of the type generally described in the aforementioned US patent. Similarly, the principles of the invention are not limited to self-closing bags or knot bags, but may also be used with reference to other bags for ice cubes having \ another type of closure. It should be noted that the present invention is not limited to the welding of plastic sheets, but that the feature of the tear and separation joints of the present invention can be established by gluing plastic sheets. Regardless of the use of gluing or sheet welding, it has turned out that, compared to conventional ice cube bags where coherent separation seams are used between the individual ice cube compartments, the mode of forming welds compartments as characteristics of spot welds according to the present invention provides a substantially better utilization of the materials, measured in the form of a larger net volume of the ice cubes produced for an area for the defined ice cube bag constructed as the area defined by the external contour of the ice cube bag. Due to the precise modality of the final product, the application of gluing or welding as alternative production techniques also allows placement of the individual ice cube bags during the production process which are put to a great extent to each other and thus obtains a better use of the amount of raw materials used, compared to conventional production techniques. Furthermore, in the individual ice cube bags, instructions for tearing and separating the glue bag or welding can be provided as explained above with reference to Figures 9, 10, 12 and 13 of the drawings, since, additionally , by means of the glue application technique used or the welding technique used, instructions can be established on the material of the sheet in the form of an address or a \ Instruction for the request to which the ice cube bag is intended. It should also be noted that the present invention is not limited to the above mentioned types of sheets, of low density polyethylene and high density polyethylene, nor to the sheet thicknesses indicated above, since according to the disclosures of the present invention a arbitrary polymer or sheet of a plastic material of glued or weldable thickness of for example v 20 thicknesses less than the above-mentioned 18 microns, for example of up to 12 microns or less, can be used, and similarly in a bag for cubes of ice sheets of the same or different type and / or sheets of the same or different thickness can be used. Likewise, coextruded and laminated sheets can be used for the ice cube bags according to the present invention.

Claims

CLAIMS 1. An ice cube bag comprising: two layers of sheet-shaped sheet having substantially identical geometrical configurations and defining an outer periphery, a peripheral junction disposed along most of the outer periphery of the film layers except a peripheral area that constitutes an entrance channel of the bag whose peripheral connection joins the layers of sheet together mainly overlapping each other and defining an internal chamber inside the bag, whose internal chamber is divided into several behaviors of ice cubes defined in relation to each other by separate joints of the sheet layers, an input channel defined by joints of the sheet layers and arranged from the entrance channel to the inner layer of the bag so as to allow the admission from the contour to the inner chamber of the bag through the inlet channel, characterized in that one of said joints eparadas defining two behaviors for ice cubes adjoining in relation to each other is constituted by a number of individual unions and each of said individual connections establishes a connection between said two sheets sheet form, with such binding strength and with such extension of limited area that said individual joint is not broken when said sheets are exposed to a separation force, but provides a tear and separation or perforation in one of said sheets along the periphery of said individual joints. Ice cube bag according to claim 1, characterized in that said individual joints are placed at such a mutual distance that when one of said sheets is torn and separated or perforated, said individual joints provide directions for a perforation line in a of said sheets. Ice cube bag according to claim 1 or 2, characterized in that the factor calculated as the area of one of said individual unions expressed in mm2 divided by the circumference or perimeter of the same union measured in mm of the same union it is in the order of 0.025 mm to 0.5 mm, preferably in the order of 0.125 mm to 0.375 mm, such as about 0.25 mm. . Bag for ice cubes according to claims 1 to 3, characterized in that each of said individual joints has an area extension corresponding to the area of a circle having a diameter comprised between 0.1 mm and 5 mm, such as between 0.5 mm and 1.5 mm, preferably between 0.9 mm and 1.0 mm, such as between 0.5 mm and 0.8 mm, between 0.8 mm and 1 mm, between 1 mm and 1.2 mm or between 1.2 mm and 1.5 mm. 5. Bag for ice cubes according to any of claims 1 to 4, characterized in that said peripheral joints, said joints defining entry channels and said individual joints are all constituted by glueings or preferably welds. 6. Bag for ice cubes according to any of claims 1 to 5, characterized in that said individual joints have the configuration of circles, ellipses, line segments, triangles, rectangles, squares, polygons, convex or concave arbitrary contours that define configurations and / or combinations of arbitrary ones of the configurations mentioned above. Ice cube bag according to any one of claims 1 to 6, characterized in that said ice cube bag is a self-closing bag, wherein said two sheet-shaped sheets provide extensions that constitute two valve fins of closure placed in said inlet channel and arranged from the entrance channel and into said bag into said internal chamber of said bag along said entrance channel, and which are joined through said joints defining the inlet channel so as to provide two closure pockets opening into said internal chamber of said bag. | 8. Bag for ice cubes according to 5 any of claims 1 to 6, characterized in that said ice cube bag constitutes a bag having a knotted closure, said two sheet-shaped sheets defining out of said inlet channel joints that are provided with perforations 10 or cuts to allow the bundling of the material of the sheets of the two sides of the entrance channel for provision of a closing node closing said entrance channel. Ice cube bag according to any of claims 1 to 8, characterized in that said sheet-shaped sheets of said ice cube bag are produced from polyethylene, preferably low density polyethylene or high polyethylene. density or other glued or weldable sheet material 20, preferably plastic or polymeric sheet material or aluminum foil material or combinations of such foil materials. 10. Ice cube bag according to any of claims 1 to 9, characterized 25 because the number of behaviors for ice cubes in said internal chamber of said ice cube bag is greater than 2, preferably 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 30 ,. 36 or 48, preferably 24. 11. Ice cube bag according to claim 10, characterized in that said behavior of ice cubes in said internal chamber of said ice cube bag are grouped into separate sub-chambers. Ice cube bag according to any one of claims 1 to 11, characterized in that the number of said individual joints defining two behaviors for ice cubes adjoining each other constitutes an odd amount or preferably an even quantity. S 13. Ice cube bag according to any of claims 1 to 12, characterized in that said two sheet-like layers are substantially rectangular. 14. Ice cube bag according to any of claims 1 to 13, characterized in that from said internal chamber of said ice cube bag a connection or connections are provided to the expansion chambers placed on one or both sides of the ice cube. said input channel. 15. Bag for ice cubes according to any of claims 1 to 14, characterized in that out of said entrance channel in said two sheet-shaped sheets tear holes are provided for the direction of tearing and separation of said bag for ice cubes. 16. Ice cube bag comprising: two layers of sheet-like sheet having substantially identical geometrical configurations and defining an outer periphery, a peripheral joint extending over the main part of the outer periphery of the sheet layers except by a peripheral area constituting an entrance channel of the bag, this peripheral union joins the layers of sheet primarily superimposed on each other and defining an inner chamber inside the bag, this inner chamber constitutes at least one compartment of ice cube and Preferably several behaviors of ice cubes connected together and defined by separate joints of the sheet layers, an input channel defined by separate seams of the layers of sheet and extending from the interior chamber of the bag to the inlet channel, in this way allowing admission of the neighborhoods to the inner chamber of the bag through the cane l Inlet, two closing valve fins connect with the foil layers in the inlet channel and IOS they extend from the entrance channel to the interior of the bag towards the interior chamber of the bag over the entrance channel, the closing valve flaps are joined together and join with the sheets through the separated joints, defining the inlet channel in order to provide two closing pockets that open towards the interior chamber of the bag, the input channel comprises a first and a second sections, the first section is provided immediately after the input channel and the second section connects the first section with the behavior or behaviors of ice cubes, the first section is of a configuration that the first entity tapers towards the compartment or behavior of ice cubes, a restriction is provided in the transition between the first and second sections and the entrance channel defines a first direction that constitutes the longitudinal direction of the channel and a second direction in a plane parallel with the two layers of sheet and perpendicular to the first direction, characterized in that the closing valve flaps extend from the inlet channel in the total length, seen in the first direction, of the first section of the inlet channel and the restriction in the transition between the first and second sections of the input channel, but no more of the restriction and to the second section of the entrance channel. Ice cube bag according to claim 16, characterized in that the restriction in the transition between the first and second sections of the input channel is provided by joints that do not contain geometric discontinuities and constitute extensions of the joints that define the first section of the entrance channel and the joints that define the second section of the entrance channel. 18. Ice cube bag according to claim 17, characterized in that the closing valve fins extend to a central position in relation to the restriction defined by the joints. 19. Bag for ice cubes according to S any of claims 16 to 18, characterized in that the joints defining the restriction, define as seen from the inside of the restriction, a convex or concave restriction or alternatively a restriction defined by parallel and rectilinear unions. 20. Ice cube bag according to any of claims 16 to 19, characterized in that the separate joints defining the restriction have an extension of 0.25 to 1.2 such as 0.3 to 0.8, preferably about 0.5 times the maximum width, 5 that is seen in the second direction, between the unions that define restriction. 22. Ice cube bag according to claim 21, characterized in that the inlet channel is substantially symmetrical in configuration. 5 relation to the middle line of the restriction in the second direction. 23. Ice cube bag according to any of claims 16 to 22, characterized in that the input channel is of 10 configuration substantially symmetric in relation to the v, longitudinal axis of the channel. 24. Ice cube bag according to any of claims 16 to 23, characterized in that the closing valve fins 15 are formed by bent portions of the sheet-like web layers. 25. Ice cube bag according to any of claims 16 to 24, characterized in that the second section comprises a chamber that is 20 defines for joints that buttress in the restriction and diverge substantially in the second direction and that connects through side junctions for additional connections that buttress to the top in the ice cube compartment or compartments and converge in the Second direction to at least one passage leading to the interior of the ice cube bag. 26. Ice cube bag according to any of claims 16 to 25, characterized in that the second section has a maximum dimension in the second direction of at least twice the dimension of the restriction in the same direction to provide a deposit of liquid or water from which liquid can circulate freely to the inlet channel through the restriction after the ice cube bag has been filled with liquid or water through the inlet channel in a first position where the channel The inlet is oriented with the front upwards and after the ice cube bag has been bent to a second position where the inlet channel is oriented with the front facing down. 27. Ice cube bag according to any of claims 16 to 26, characterized in that the restriction in the transition between the first and second sections serves the purpose of providing a venturi effect to provide a relative pressure drop in the restriction. to close the channel in the restriction when the liquid flows from the second section through the restriction to the first section to provide a self-closing effect. 28. Ice cube bag according to any of claims 16 to 27, characterized in that the maximum dimension of the second section in the second direction of the inlet channel is two to seven times the dimension of the restriction, preferably 2.4 to 5 times the dimension of the restriction, such as 2.6 to 3.4 times the dimension of the restriction. 29. Ice cube bag according to any of claims 16 to 28, characterized in that the dimension of the first section of the channel on the second section of the entrance channel in the entrance channel, is approximately twice the size of the restriction in the second direction. An ice cube bag according to any one of claims 16 to 29, characterized in that the first section of the channel is defined by joints constituting straight lines or curved lines, which already constitute a first convex or a concave section of the channel. An ice cube bag according to any of claims 16 to 30, characterized in that the second section is limited by joints that constitute partially straight lines, partially curved lines, such as segments of circles that define a second section with convex configuration or concave 32. Method for producing bags for ice cubes or corresponding bags from welded plastic sheets, comprising: (i) adding two or more sheets of plastic as layers of plastic sheets placed one on top of another from a warehouse of plastic sheets, (ii) joining the plastic sheets with at least one weft of high temperature resistant material such as Teflon, preferably wefts produced by woven or non-woven Teflon fibers or Teflon yarns in such a way that a sandwich is produced by the weft of high temperature resistant material and the plastic sheets, (iii) transport of the sandwich to a stamping or welding where the sandwich is subjected to a stamping or welding operation, the sandwich is subjected to a stamping or welding operation by stamping or welding tools that supply pressure and heat to the surface with the front facing out of the weft. high temperature resistant material in specific areas corresponding to the intended stamping or welding areas of the final ice cube bag or corresponding bag, the high temperature resistant material web serves as a weft for pressure and temperature transfer and the supply of pressure and heat produces at least partially a fusion of the surfaces facing each other i of the plastic sheets in the specific areas and in the same areas that produce a pressure and union of the weft with the plastic sheets, (iv) transport of the sandwich from the stamping and welding station, the weft of resistant material at high temperature it is maintained in a position of connection with the plastic sheets to support the softened and at least partially melted plastic sheets in order to avoid stretching of the plastic sheets during this transport, (v) tearing the web of material resistant to high temperature by separating from the joint with the plastic sheets after cooling the plastic sheets to an appropriately low temperature, so that the plastic sheets are not exposed to deformation during transport of the plastic sheets, and (vi ) cut a bag of cooled and final ice cubes or corresponding bag separating it from the cooled plastic sheets, characterized by A stamping or welding operation is performed during which the intended stamping or welding areas of the ice cube bag or corresponding final bag demonstrate welds generated by a line segment or individual points formed by welds that constitute a consistent area of material not welded and because the tearing of the weft of high temperature resistant material from the joint with the plastic sheets under point (v), is done immediately after the stamping or welding operation. 33. Method according to claim 32, characterized in that the sandwich under point (iii) is pressed against a butt confinement during the stamping and welding operation, the stamping and welding tools are pressed against the web 10 material resistant to high temperature from the side of the V sandwich opposite to butt confinement. 34. Method according to claim 32 or 33, characterized in that under point (ii) two plots of high temperature resistant material are used. 1S between which are inserted the plastic sheets that constitute a sandwich having more upper and lower layers consisting of the two wefts of high temperature resistant material and intermediate layers consisting of plastic sheets, which the two wefts of The high temperature resistant material under point iii) are pressed into and joined with opposite sides of the plastic sheets, that the two high temperature resistant material webs under point (iv) are held together on opposite sides of the sheets. sheets of 25 plastic for supporting the plastic sheets softened and at least partially fused from opposite sides of the plastic sheets and the two frames of resistant material. at high temperature, under point (v), they are torn from the joint with the plastic sheets either simultaneously or in turn. 35. Method according to any of claims 32 to 34, characterized in that the transport of the sandwich to the stamping and welding station and the transport of the sandwich from the stamping and welding station, are carried out continuously. 36. Method according to claim 35, characterized in that the stamping and welding tools in the stamping and welding station comprise one or more rotating stamping and welding rollers. 37. Method according to claim 36, characterized in that the stamping and welding tools comprise two opposing rotating and opposing welding and stamping rollers. 38. Method according to claim 32 or 33, characterized in that the transport of the sandwich to the stamping and welding station and the transport of the sandwich from the stamping and welding station are carried out intermittently, the stamping and welding operation is carried out while that the sandwich remains stationary in the stamping and welding station. 39. Method according to claim 38, characterized in that the stamping and welding tools comprise a perpendicularly mobile stamping and welding piston having a stamping and welding die with contours corresponding to the intended stamping or welding areas of the bag. ice cubes or final corresponding bag. 40. Method according to claim 39, characterized in that the stamping and welding tools also comprise a stationary or perpendicularly stationary stamping and welding matrix produced with contours that constitute the reflected image of the contours of the embossing and plunger welding die. . of stamping and welding perpendicularly mobile. 41. Method according to any of claims 32 to 40, characterized in that the weft or frames of high temperature resistant material constitute closed loops which are transferred by the plastic sheets during the transport of the sandwich to the stamping and welding station and the transport of the sandwich from the stamping station and US welding . 42. Method according to any of claims 32 to 41, characterized in that the plastic sheets are constituted by two layers of plastic sheets of the same or different polyolefins, preferably the same polyolefin such as polypropylene, polyvinyl chloride, polyethylene, preferably LDPE or HDPE. 43. Method according to claim 42, characterized in that the two plastic sheets have bent parts for supplying closure pockets in self-closing ice cube bags. 44. Method according to any of claims 32 to 43, characterized in that the plastic sheets are constituted by homogeneous plastic sheets or coextruded multi-layer plastic sheets or plastic sheets coated on the surface with aluminum. 45. Method according to claim 44, characterized in that in the surfaces facing each other, the plastic sheets have surface coatings of fusible material having a lower melting point than the support sheet of the plastic sheets. 46. Method according to any of claims 32 to 45, characterized in that the stamping and welding tools are heated to a temperature between 150 and 2,000 ° C such as 160 and 1,900 ° C, such as about 1,700 ° C in connection with LDPE sheets and approximately 180 to 1900 ° C in connection with HDPE sheets. SUMMARY OF THE INVENTION A bag for ice cubes comprises two sheets in the form of a sheet. (12, 14, 12 ', 14 *) that define an external periphery. A peripheral junction (20, 21, 21a, 21b) is disposed along most of the outer periphery of the sheets, with the exception of a peripheral area constituting an entrance opening of said bag (10). This peripheral connection joins the sheets together defining an internal chamber that is divided into several behaviors for ice cubes defined by separate joints (22, 23, 24, 25, 29) of the sheets. An inlet channel is arranged from the entrance opening to the inner chamber of the bag for this mode to allow the admission of the environment to the inner chamber of the bag through the inlet channel. Each of said separate junctions (22, 23, 24, 25, 29) is constituted by a number of individual junctions (22, 23, 24, 25, 29), establishing each of said individual junctions (22, 23, 24). , 25, 29) a connection, between the two sheet-shaped sheets with such joining strength and with such a limited extension area that the individual joint is not broken when the sheets (12, 14; 12 ', 14') are subjected to a separation force, but provides tearing and separation or perforation (44) in one of the sheets (12, 14; 12 ', 14') along the periphery of said individual joints. In this way you get a bag for ice cubes that is very easy to open by tearing and separating.