ES2365113T3 - BAG WITH MULTIPLE COMPARTMENTS. - Google Patents

Abstract

The invention concerns a bag (1) comprising a main bag (2) provided with two main side walls (20) with sealed lateral edges (21) and a filling orifice (22), said main bag (2) including at its edge or lower end (24) a base provided with means for standing upright. The invention is characterized in that it comprises at least one secondary wall (3) integral with the main bag (2) so as to form at least one secondary compartment (30), typically for packaging a so-called secondary product (4B), said secondary orifice (31) typically including a secondary closure means (37). The bag provides the advantage of the possibility of packaging separated products.

Description

FIELD OF THE INVENTION

[0001] The invention relates to the field of flexible packaging, typically bags. These bags are made with monolayer or multilayer tape materials, which can be formed entirely or in part by plastic films.

[0002] Refers to bags with multiple compartments.

STATE OF THE TECHNIQUE

[0003] The concept of products packaged in bags with several compartments is already known. [0004] Thus, there are already bags joined together that form an uncut ribbon in a continuum of bags that allows the products to be grouped in the form of a "rosary". [0005] A combination of standard bags by means of a mobile clamp is also known, so that two compartments can be created artificially. The clamp is removed at the time of using the products contained in the two bags, typically to allow mixing these two products. [0006] Two-compartment flat bags are also known. These bags are composed of three welded films that form two separate cells or compartments. [0007] "Doypack" ® type bags are also known, which consist of an added bottom that allows the bag to be held in an upright position. These bags, made with plastic films, can be broken by hand to open them.

PROBLEMS PROPOSED

[0008] On the one hand, there is a growing demand for "Doypack" ® bags. These bags are increasingly replacing other types of traditional packaging, such as metal boxes, cardboard boxes, etc., especially for their good mechanical characteristics and, sometimes, for their good barrier properties. [0009] In fact, these bags have many advantages compared to traditional packaging, in particular volume and weight advantages, since the volume before introducing the product and after consumption is that of a very thin flat bag, for example of the order of 1 mm. [0010] On the other hand, there is also a growing demand for processed products, both in the field of culinary art and in other fields. In this case, it is often necessary to separately package two or more ingredients

or constituents to form the product combination. These constituents will be used or mixed simultaneously when consuming the contents of the packaging. It can be, for example, several ingredients of a recipe or a dessert.

[0011] Therefore, there is a need for Doypack® type bags with several compartments. It is also important that such bags are cheap to manufacture.

DESCRIPTION OF THE INVENTION

[0012] The object of the invention is a multi-compartment bag according to claim 1. [0013] Said main bag can typically be of the "Doypack" ® type and, in this type of bag, the system to keep it upright it can comprise a reinforcement that forms a fold with an "A" shaped profile, said reinforcement typically consisting of a portion of folded reinforcement band or two portions of bands of reinforcement sealed together. In this type of packaging, said reinforcement is folded when the bag is empty, so that the empty bag is flat and occupies a small space or volume. Instead, once the reinforcement is deployed, specifically because of the weight of the contents of the bag, it acquires a base or seat that gives it a stable vertical position.

[0014] In general, the main bag according to the present invention is a bag containing the system for stay upright, preferably of the "Doypack" ® type. [0015] These systems allow one or more compartments or complementary bags to be formed, so that

they can separate the products that they want to keep separate before use, but that they want to combine or find combined at the time of use of at least one of the packaged products. [0016] The numerous advantages of the invention are detailed following the description and in the illustrations.

DESCRIPTION OF THE DRAWINGS

[0017] All drawings refer to "Doypack" ® bags.

[0018] Drawing 1 represents, viewed from above, two "Doypack" ® bags corresponding to two

current bags before cutting them along the transverse cutting lines (120), in dashed lines.

[0019] The plumed parts correspond to the heat sealing margins. [0020] Drawing 9 illustrates a multi-compartment bag (1) according to the invention. Drawings 2a to 2g, 3a to 3c, 4a, 4b, 6a, 6b, 7a, 7b, 8a, 8b, 10a to 10c, 11a to 11d, 12a to 12d, 13, 14 and 15b refer to embodiments of multi-compartment bags not described in the claims. Drawings 5a, 5b, 15a, 15c and 15d refer to "Doypack" ® current bags.

[0021] Drawing 2a illustrates a bag (1) in perpendicular cut to the main or expensive side walls main (20) and to the added fund (25). The bag (1) is represented in an upright position, as in the drawings that They appear below.

[0022] Drawing 2b, analogous to drawing 2a, represents a bag (1) whose secondary compartment (30B ’) is outside the main bag (2). [0023] Drawing 2c is an enlarged view of the upper part of drawing 2b surrounded by dotted lines.

[0024] Drawing 2d is a view, analogous to drawing 2a, of another embodiment of the bag (1). [0025] Drawing 2e corresponds to the same bag (1) as that of drawing 2d, but open. [0026] Drawings 2f and 2g illustrate, in cross-section, the structure of the upper end (23) of the bag (1) of the 2d and 2a drawings respectively. [0027] Drawing 3a is analogous to drawing 2a, but corresponds to another embodiment of the bag (1). [0028] Drawing 3b is a profile view of the bag (1) of drawing 3a. [0029] Drawing 3c is analogous to drawings 2f or 2g and illustrates the structure of the upper end (23) of the bag (1) of the drawing 3a. [0030] Drawing 4a, analogous to drawing 3a, illustrates another embodiment of the bag (1). [0031] Drawing 4b, analogous to drawings 3c or 2f, illustrates the structure of the end (23) of the bag (1) of drawing 4a. [0032] Drawings 5a and 5b are schematics, seen respectively from above and in cross-section according to a plane. vertical, of the superposition (10) of films (6, 6 ’) and of the reinforcement band (8, 8’) during the manufacture of bags

"Doypack" ® (manufacture of two bags at the same time) according to a current process. [0033] Drawings 6a and 6b are analogous to drawings 5a and 5b, and correspond to the manufacture of bags (1) of the type represented in drawing 8b. [0034] Drawings 7a and 7b are analogous to drawings 6a and 6b, and correspond to the manufacture of another form of realization of the bag (1).

[0035] Drawings 8a and 8b, analogous to drawing 2a, represent another embodiment of the bag (1). [0036] Drawing 9 is a top view of a bag (1) with its filling holes open, in the case of a bag of the type represented in drawing 3a with a secondary wall (3A) contained within the compartment main (2).

[0037] Drawings 10a to 10b are analogous to drawings 6b and 7b, but by exchanging the relative position of the secondary films (7, 7 ’) and the reinforcement band (8, 8’). [0038] Drawing 10c is analogous to drawings 6b and 7b, but corresponds to another form of manufacturing the bag (1). [0039] Drawings 11a to 11d refer to bags (1) with stopper (5) [0040] Drawings 11a to 11c are schematic views analogous to drawing 3b. [0041] Drawing 11a illustrates the case in which the main bag and the secondary compartment have

independent plugs (5) and (5 ’). [0042] Drawing 11b illustrates the case where the main bag and the secondary compartment have a cap

(50) with two holes. [0043] Drawing 11c illustrates the case where the main bag and the secondary compartment have a cap mixer (51), whose section is depicted in drawing 11d.

[0044] Drawing 12a, analogous to drawing 3a, illustrates the case in which the bag (1) consists of a main bag (2) and, a both sides of this main bag (2), two secondary compartments (30A ’).

[0045] Drawing 12b is a profile view of the upper end (23) of the bag (1) of drawing 12a. [0046] Drawing 12c, corresponding to drawing 12b, schematically represents the upper end (23) after having torn the upper part (291). [0047] Drawing 12d is analogous to drawing 12c, but after separating the walls and the two parts of the "zip" closure (28). [0048] Drawing 13, analogous to drawing 12a, represents a bag (1) consisting of two secondary compartments (30A ’) whose opening is near the lower end (24) of the main bag (2).

[0049] Drawing 14, analogous to drawing 3b, represents a bag (1), with a secondary wall (3A ’) outside the bag main (2), as illustrated in drawing 3a, but with a secondary side hole (31). [0050] Drawing 15a is a profile view, analogous to drawings 3b and 14, of a current bag, illustrating schematically the sealed parts represented by plumed areas and a dark stroke rectangle that schematically represents the added fund (25).

[0051] Drawing 15b is a partial view, analogous to drawings 5a, 6a and 7a, of the superposition (10) of films during the manufacture of bags (1) according to drawing 10a. [0052] Drawing 15c is a partial view analogous to drawing 5b and represents, in front of drawing 15a, the arrangement of the main films (6, 6 ’) and reinforcement band (8).

[0053] Drawing 15d is a partial view representing a cut of the bag of drawing 15a, according to the dotted line of drawing 15a, to illustrate the variable height of the sealing margin (250) that joins the bottom that shapes the reinforcement

(25) and the lower end of the side walls (20).

DETAILED DESCRIPTION OF THE INVENTION

[0054] According to the invention, said secondary wall (3) may preferably be attached to said main bag (2) by at least one of the joint contours (32) sealed to said main bag (2), of such that said main bag (2.2 ') and said secondary compartment (30, 30A, 30A', 30A ", 30B, 30B ', 30C) have a common sealing margin. Indeed, it has been observed that a set of two bags like the one shown in drawing 1, and which does not have a common sealing margin, has a less stable vertical position than that of the bags (1), which do have this common sealing margin and are illustrated in various of its variants, in the drawings. [0055] Advantageously, said joint contour (32) may face or coincide with at least one of said sealed edges of the main bag, typically one of the sealed side edges (21 ) of the main bag (2), so that said secondary wall (3) can be attached to the bo The main (2) without an additional sealing stage compared to those necessary to make the main bag (2). Typically, said secondary compartment (30) may have two sealed lateral contours (34). Said side contours (34) and the side edges (21) are typically facing or overlapping to form the secondary compartment (30) without an additional sealing stage compared to those necessary to make the main bag (2). In this way, the main bag and the secondary compartment form a joint joined by at least its common height, which improves the strength, stiffness and vertical stability of the assembly, as observed by the applicant. [0056] In most cases, the secondary hole (31) can typically be next to the main hole (22). The compartment (30) may have a bottom, typically next to the lower end (24), with a bottom contour sealed to said main bag (2).

However, as illustrated in drawing 13, the secondary hole (31) may typically be next to said lower end (24) of the main bag (2), and the compartment (30) have a bottom, typically at side of said upper end (23) of the main bag (2), with an upper contour (35) sealed to the main bag (2). This embodiment can be used advantageously to package solid articles or objects, for example instructions, without the risk of spoiling or becoming dirty when filling the main bag or at the time of consuming the main product (4A). [0057] According to an embodiment of the invention, said secondary compartment (3) can be a compartment (30A, 30A ') with said secondary wall (3A, 3A') for one of its faces and one of the main side walls (20) for the other side. This embodiment is illustrated in particular in drawings 3a, 4a, 9, 12c and 13.

[0058] According to another embodiment, said secondary compartment (3) can be a compartment (30B, 30B ') with two secondary side walls (3B, 3B'), made from a folded secondary film (7) with contours sealed sides or from two secondary films (7, 7 ') with bottom and sealed lateral contours. This embodiment is illustrated in particular in drawings 2a, 2b, 2e, 2d, 8a and 8b.

[0059] According to another embodiment, said secondary compartment (30A, 30B) may be inside the main compartment (2), as illustrated in drawings 2a, 2e, 2d, 3a, 8a, 8b and 9. [0060 ] According to a bag variant (1), illustrated in drawing 9, the secondary wall (3) can be a secondary wall

(3A) forming a division in the main bag (2) that produces two compartments (30A) and (20A), the upper contour (35) of said secondary wall (3A) forms a division of the main filling hole (22) , one face of the upper contour located in front of an upper edge forms the main hole (22 '), and the other face of the upper contour located in front of the other upper edge forms the secondary hole (31').

It may be advantageous that each face of the upper contour and the upper edge in front of said face has a lateral sealing area (221, 310) contiguous to said lateral contours (34) or lateral edge (21), so that it can be separated more easily the upper contour and the upper edges, and it is easier to access the main (22 ') and secondary (31') holes.

[0061] According to another variant of bag (1), the secondary wall (3) can be a secondary wall (3B, 3B ') that forms, itself, the secondary compartment (30B, 30 B'), inside the that the two main side walls (20) and the two secondary side walls (3) have a different length, so that said main hole (22) and the secondary hole (31) are staggered relative to each other, one near the end upper and the other located between said upper end and the lower end. In some cases, this staggering can facilitate the operation of filling the main bag and the secondary compartments, and / or the consumption of the products contained in these bags or compartments.

 This variant is illustrated in drawings 8a and 8b. [0062] According to another variant of bag (1), and as illustrated in drawings 2d and 2e, the main bag (2) may not have a filling hole (22), the upper edges (220) of the side walls (20) would be sealed to the upper contours (35) of the two secondary walls (3C), and the main product would be packed in said secondary compartment (30), the upper contours (35) of the secondary walls located opposite (3C) they would form the secondary hole (31), and the main bag would form an external pocket (2 ') for said compartment forming an internal pocket or secondary compartment (30C). In this case, the main bag (2) can have a system to keep the bag in an upright position at the time of consuming the main product, typically one of the following: a vertical maintenance system with permanent spring effect, a hole (251) or a valve to be able to inflate the main bag (2) so that air enters as the volume of the secondary compartment decreases, a decrease that, eventually, can be made without the need to capture air, so that it is arranged of an airless container, which prevents the oxidation and contamination of oxygen sensitive products. [0063] According to another embodiment, said secondary compartment (30A ’, 30B’) may be outside said main compartment (2). This embodiment has been used in drawings 2b, 3b (indications in brackets), 12a, 13 and 14. As illustrated in drawing 14, the secondary hole (31) can be parallel to the side edge (21). [0064] According to a variant of this embodiment, one of the side walls (20) can be a side wall (20A) that serves as a support for the secondary wall (3A ') and which has a side hole (200) that allows to communicate the main bag (2) and the secondary compartment (30A "), so that, typically, the main product (4A) can be manually extracted, and said secondary compartment (30A") does not contain the secondary product, and the Secondary wall (3A ') temporarily obstructs the side hole (200), possibly tightly. In this case, the main product (4A) can typically be formed by a stack of products (40), typically flat, folded and interwoven. A tip (41) of the product (40) above said stack would pass through said side hole (200), so that by hand gripping said tip (41) of a product, said product above said stack a tip of the next product in the stack would pass through said side hole.

Drawing 4a is an illustration of this variant. [0065] Advantageously, the main bag (2) can have an easy opening system (29) that allows breaking the main side walls (20), typically following a predetermined line (29, 39). The main closure (27) and secondary closure (37) systems would typically be formed by a sealing margin. [0066] The invention is not limited to a particular easy opening system. Any known means can be used, be it a weakening line, a partially stamped line, for example by laser, or even a

oriented or channeled break line. This line of breakage may have a notch or cut (290) that serves as a start to open the container and that causes the separation of an upper part (291). However, the opening of the main bag (2, 2 ') and / or that of the secondary compartment (30) can be carried out without breaking one end of the bag (1), in particular in the case where the main closing systems (27) and / or secondary closure (37) have a peelable sealing layer, either a peelable and recerrable sealing layer, or any equivalent method that can serve as the main (27) and / or secondary (37) closure system ).

[0067] In the case where the main closure (27) and secondary closure (37) systems have a sealing margin that requires breaking the bag (1) to open it for the first time, and as illustrated in the example of drawings 2a, 2c, 2f and 3c, said main bag and / or the secondary compartment may have a provisional closure system (28) and / or (38), typically formed by a "zip" strip or a layer cold pressure adhesive.

[0068] According to the invention, the main side walls (20, 20A) can be made with single or multi-layer films, typically consisting of multilayer combinations based on PET, OPP, OPA, PE, PP, aluminum, or extruded films. base of PE, PP, PA or EVOH. Also, the secondary wall or walls (3, 3A, 3A ', 3A ", 3B, 3B', 3C) can be of a material suitable for sealing on one or two sides according to the type of compartment, and typically can be: PE , PP, a multilayer material based on PE or PP, or with PE or PP on the external faces, possibly with a layer of barrier material, typically aluminum or EVOH, generally, the external walls are made of printed films.

[0069] Whatever the embodiment or variant of the invention, the main bag (2) and / or the secondary compartment (30, 30A, 30A ', 30A ", 30B, 30B', 30C) may have an accessory intended to facilitate the use of said bag (1), typically a plug (5), which may have a double hole (50) or a mixer (51), as illustrated in drawings 11a to 11d. [0070] A indicatively, the bags (1) according to the invention have a capacity of 50 ml to 5,000 ml, and typically of 100 ml to 2000 ml.The larger capacity can be used to package products with a low relative density. [0071] In general , the capacity of the main bag is at least the same as that of the secondary compartments. [0072] Another object of the invention is a method of manufacturing a multi-compartment bag (1) according to the invention, according to this procedure:

a) an overlay of the different elements that constitute the stock market is created. The side walls are formed by portions of film (6, 6 ′) obtained by unrolling a film longitudinally, which can be printed (6, 6 ’). The secondary wall is made from a portion of film (7, 7 ’) obtained by unrolling at least one film, which can be folded, in said longitudinal direction or in the transverse direction. The reinforcement (25) is formed by a portion of one or two reinforcement bands (8, 8 ') obtained by unwinding, in the longitudinal direction, or possibly in the transverse direction, a folded reinforcement band (8) or two bands (8 , 8 '). The portions of bands (8, 8 ’) are located between said portions of film (6, 6’),

b) are arranged, in said superposition, the elements or accessories (38) intended to facilitate the opening or closing of the main bag and / or the secondary compartment. The accessories are band-shaped and are preferably introduced longitudinally. The individual accessories are preferably introduced in the transverse direction, c) a thermal screen (9), typically in the form of a non-sealable film or plate portion, can be placed on said superposition, to avoid sealing the two adjacent layers of the overlay, d) the overlay is compressed between sealing tongs arranged so as to typically form the

set of welds, especially the bottom (250), the sealing edges (21) and the joint contour (32), e) if this thermal screen is used, after removing it, the bag (1) is cut, having previously formed the eventual notches intended to guide the breakage of the bag when opened.

[0073] Another object of the invention is the application of the bag (1) according to the invention to the packaging of products, typically the following: folded items, such as wipes, napkins, liquid and pasty products, such as dough of pastry, typically a marbled cake, pastry doughs together with their corresponding plate, products detergents or chemicals, powdered products, sauces, such as ketchup, mustard, cosmetic products, promotional or gift items, or instruction manuals.

FORMS OF REALIZATION

[0074] The bags (1) corresponding to drawings 2a, 2b, 2d, 2e, 3a, 3b 4a, 8a, 8b, 9, 12a, 13 and 14 were manufactured according to the procedures illustrated in drawings 6a, 6b, 7a , 7b, 10a, 10b, 10c and 15b.

Prior state of the art:

[0075] The Doypack® type bag and the corresponding manufacturing process, according to the existing technique, are shown in drawings 5a, 5b, 15a, 15c and 15d. [0076] Drawings 5a and 5b are schematics, seen respectively from above and in cross-section according to a vertical plane, of the superposition of films (6, 6 ') and of the reinforcement band (8, 8') in manufacturing of bags of type "Doypack" ® (manufacture of two bags at the same time) according to a current process.

[0077] With the representation of drawing 5a, the films (6.6 ’) and the reinforcements (8, 8’) arrive from the left as a band. The plumed part of drawing 5a corresponds to the peripheral heat sealing zones. The line (110) is a longitudinal cutting line for separating a first bag from a second bag manufactured simultaneously, while the line (120) is a cross-cutting line for separating the manufactured bags from the bands above.

[0078] Drawing 15a is a profile view of a bag according to the current technique, analogous to that of drawing 3b, which schematically illustrates the sealed parts represented by plumed areas and a dark stroke rectangle that schematically represents the bottom added (25). [0079] Drawing 15c is a partial view that represents, in front of drawing 15a, the arrangement of the main films (6, 6 ’) and the reinforcement band (8).

[0080] Drawing 15d is a partial view representing a cut of the bag of drawing 15a, according to the dotted line of drawing 15a, to illustrate the variable height of the sealing margin (250) that joins the bottom that shapes the bottom reinforcement

(25) and the lower end of the side walls (20).

Structure of the bags (1) manufactured

Embodiment "a" according to drawings 2a and 2g:

[0081] Drawing 2a illustrates a bag (1) in perpendicular cut to the main side walls or main faces

(20) and to the fund added (25). The bag is represented in an upright position, as in the drawings that appear continuation. According to the embodiment of drawing 2a, the bag (1) consists of a main bag (2) containing a secondary compartment (30, 30B). Drawing 2g illustrates, in cross-section, the structure of the upper end (23) of the bag (1) of drawing 2d.

Embodiment "b" according to drawings 2b and 2c:

[0082] In the embodiment of drawing 2b, the secondary compartment (30B ’) is outside the main bag (2). Drawing 2c is an enlarged view of the upper part of drawing 2b surrounded by dotted lines. The secondary compartment (30B ’) is connected to the main bag (2) by a sealing zone that forms the joint contour (32), and has a provisional closure system (38).

Embodiment "c" according to drawings 2d, 2e and 2f:

[0083] Drawing 2d corresponds to a bag (1) "closed", while drawing 2e corresponds to the same bag (1), but open. This bag (1) has a secondary compartment (30C) whose secondary walls (3C) are joined by their upper ends (35) to the upper sealing edges (220) of the main walls (20) of a main bag (2 ' ). According to this embodiment, only the secondary compartment (30C) contains a product (4B). The main bag (2 ') has a hole or a valve (251) that allows air to enter so that the bag (1) retains its vertical posture and its exterior appearance, regardless of the amount of product (4B) consumed, which It is housed in the secondary compartment (30C).

Drawing 2f illustrates the structure of the upper end (23) of the bag (1) of drawing 2d, with a break line (29) delimiting an upper part (291), which separates when the package is opened, and a part bottom, equipped with a provisional closure system (38) at the height of the secondary hole (31).

Embodiment "d" and "d" according to drawings 3a, 3b and 3c:

[0084] In this embodiment, the bag (1) consists of a secondary wall (3, 3A) located inside the

main bag (2). Here the analogous case (embodiment d '), which has the secondary wall (3A ’) located outside the main bag (2). Drawing 3b, which shows a profile view of the bag (1) of drawing 3a, schematically illustrates the sealed parts represented by plumed areas and a dark line rectangle that represents the added background (25). 3c drawing illustrates the structure of the upper end (23) of the bag (1). In this case, the opening of the main bag (2) and that of the secondary compartment (30A) have a provisional closure system, indicated by numbers (28) and (38), respectively.

Embodiment "e" according to drawings 4a and 4b:

[0085] In this embodiment of the bag (1), on the one hand, the product (4A) contained in the main bag (2) is extracted through a lateral opening (200) made in the side wall (20) ), and on the other hand, the secondary wall (3A '), which is external to the main bag (2), serves to seal the opening (200). However, the secondary wall (3A ') forms a secondary compartment (30A ") which may contain, for example, instructions. This secondary compartment (30A') is initially closed by a sealing margin (27) that opens to the open the container for the first time, and it also has a provisional closure system (28) represented in the form of a "zip" closure, that is, a combination of a male element with a female element, facing each other, as schematized in drawing 4a [0086] Drawing 4b illustrates the structure of the upper end (23) of the bag (1) In this case, the structure of this end does not have a break line (29, 39), since that the product (4A) is extracted laterally and not by this upper end.

Embodiment "f" according to drawings 8a and 8b:

[0087] In these drawings, the bag (1) has been shown open. In this bag (1), the main side walls (20), like the secondary walls (3B), have different lengths, so that the main filling hole (22) and the secondary filling hole (31) are staggered The main hole (22) is located lower than the secondary hole (31) in drawing 8a. Drawing 8b illustrates the opposite case. This bag structure can be interesting when packaging products (4A, 4B) or when consuming or using them.

Embodiment "g" according to drawing 9:

[0088] Drawing 9 is a top view of a bag (1) with its filling holes open, in the case of a bag of the type depicted in drawing 3a with a secondary wall (3A) contained within the main bag (2). To facilitate separation of the upper contour (35) from the secondary wall (3A) of the two side walls (20A) to form the filling holes, the secondary wall (3A) is attached to the side walls (20A), not only sealing the lateral edges (21) and the lateral contours (34), but also by sealing the upper end (26) of the main walls (20A) with the upper contour (35) of the secondary wall (3A). Portions

(221) and (310) respectively of these upper ends and the upper contour (35) are heat sealed. This heat sealing can be carried out, for example, with a thermal screen (9), as illustrated in a procedure represented in drawings 10a, 10b and 15b, in which a thermal screen can be introduced laterally as the bags are oriented with the lateral opening, and not central, as in drawings 6b and 7b.

Embodiment "h" according to drawings 11a to 11d:

[0089] These drawings 11a to 11d refer to bags (1) with caps (5). These plugs are typically fixed by sealing during the manufacturing process of the bag (1), and are introduced laterally in the case of manufacturing process illustrated in drawings 10a, 10b or 15b, so that they are attached to the walls of the bags (1), keeping or not a main and / or secondary filling hole. Filling can be done through the cap, at least when there is a different cap for each bag or compartment.

Drawings 11a to 11c are schematic views analogous to drawing 3b. Drawing 11a illustrates the case where the main bag and the secondary compartment have caps

independent (5) and (5 ’). Drawing 11b illustrates the case where the main bag and the secondary compartment have of a plug (50) with two holes. Drawing 11c illustrates the case in which the main bag and the secondary compartment have a mixing plug

(51), whose section is represented in drawing 11d.

Embodiment "i" according to drawings 12a to 12d:

[0090] Drawing 12a illustrates the case in which the bag (1) consists of a main bag (2) and, on both sides of it

main bag (2), two secondary compartments (30A ’), and in which each of the side walls (20) of the

main bag forms the inner wall of the secondary compartments.

Drawing 12b is a profile view of the upper end (23) of the bag, with a transverse line of rupture

(29), which typically starts with a notch (290) that serves to separate the upper part (291) when opening the container

for the first time.

Drawing 12c schematically represents the end (23) after having broken the upper part (291), before

open the closing system (28) available to the main hole (22), while drawing 12d is analogous to drawing

12c, but after separating the walls and the two parts of the zip closure, or a system equivalent to it, by

For example, two cold seal margins that can be removed.

Embodiment "i" according to drawing 13:

[0091] This embodiment is analogous to the previous one (embodiment "i" according to drawing 12a), but it differs in that the opening of the two secondary compartments (30A ') is near the lower end (24) of the main bag (2), and not of its upper end (23), as in drawing 12a.

Embodiment "k" according to drawing 14:

[0092] Drawing 14 represents a bag (1), with a secondary wall (3A ') outside the main bag (2), as illustrated in drawing 3a, but with a secondary hole (31) and a system Secondary side closure (37), located in front of one of the side edges (21) of the main bag (2). The arrow with the number (31) indicates the direction of filling of the secondary compartment (30A ') or of access to its contents (4B), while the arrow with the number (22), rotated 90 ° with respect to the previous one, indicates the address of filling of the main bag (2) or of access to its content (4A).

Some examples of bag manufacturing (1):

Embodiment "a" according to drawings 10a and 10b:

[0093] In this embodiment, the secondary films (7, 7 ’) are folded films. Drawings 10a to 10b are analogous to drawings 6b and 7b, but exchanging the relative position of the secondary films (7, 7 ’) and the reinforcement band (8, 8’). The reinforcing bands (8, 8 ') are centered on the manufacturing line (10) represented in drawings 10a and 10b, while they are in lateral position in drawings 6b and 7b, and vice versa as regards the films secondary (7, 7 '). The reinforcement band has two different bands (8 and 8 ’) in drawing 10a, while there is only one band (8) in drawing 10b, a band that is then cut longitudinally along the cutting line (110).

Embodiment "d" according to drawing 10c:

[0094] In this case, the secondary film (7) is outside. In drawing 10c, the reinforcement bands (8, 8 ’) are lateral, as in drawings 6b and 7b. The bag (1) obtained according to The procedure outlined in drawing 10c is similar to that in drawing 3a.

Embodiment "f" according to drawings 6a and 6b:

[0095] Drawings 6a and 6b, analogous to drawings 5a and 5b, correspond to the manufacture of bags (1) of the type to be

represented in drawing 8b.

In this case, a secondary film (7) is folded between the main films (6) and (6 ’). Welding zones

they have, in addition to the peripheral zones represented in drawing 5a, the plumed transverse zones that

they will serve to form the joint contour (32). These transverse zones are typically created using a screen

thermal or a sealing film (9). These zones are formed, for example, before forming the peripheral zones of

sealed to be able to temporarily insert or remove the screen (9) of the film overlay (6, 6 ’, 7, 8 or 8’) that

You have to heat seal.

In drawing 6b, the arrows represent the heat sealing zones and the movement of the sealing pliers.

Embodiment "f" according to drawings 7a and 7b:

[0096] In this variant of the previous embodiment, the folded secondary film (7) has been replaced for the two films (7) and (7 ’).

Another embodiment according to drawing 15b: [0097] This embodiment provides, as illustrated in drawings 10a or 10b, that the reinforcement band (8, 8 ’) is centered, so that, when the opening of the bags is oriented outwards, if necessary it is possible to insert a thermal screen (9) into the bag, or any other accessory that can be attached laterally to the bag be useful

ADVANTAGES OF THE INVENTION

[0098] The advantages of the bags (1) according to the invention are numerous:

-First, they allow to obtain packaging with a good vertical stability, which was precisely one of

The purposes of the invention.

-Secondly, they can be obtained without significantly changing the production rate of the procedure

standard manufacturing of "Doypack" ® bags, and using standard manufacturing devices, with some

minimal modifications.

-Also, depending on the films chosen to make the internal walls, the bags according to the invention allow to completely isolate the product (4A) contained in the main bag (2) of the product (4B) contained in the secondary compartment (30), or, on the contrary, allow the transfer of material between the main bag and said secondary compartment. Drawing 4a illustrates an example of material transfer, but there may also be a secondary compartment (30) containing a product capable of transferring in a controlled manner to the main bag (2) a certain moisture index or any other product for the purpose Keep keeping the product (4A) contained in the main bag (2) even if the main bag is opened repeatedly. -Also, the invention allows bags (1) to be manufactured without air, much lighter and smaller than other known airless packages. -Finally, the invention opens the doors to a wide variety of bags (1) to be able to respond to all kinds of needs, differentiating each bag according to these requirements. In addition, the large number of embodiments or variants of bags (1) according to the invention offers the possibility of customizing them according to the customer.

LIST OF NUMBERS [0099]

Multi-compartment bag 1

Manufacturing line or bench 10

Longitudinal direction in the manufacturing process 11

Longitudinal cutting line 110

Transversal direction in the manufacturing process 12

Cross section line 120

Head or front of line 13

Line 14 queue

Sides of line 15

Main bag 2, 2 ’

Main side walls or faces 20, 20A

Side hole 200

Sealed side edges 21 Main filling hole 22, 22 'Margins or upper sealing edges 220 Sealing side zone 221 Top end 23 Bottom end 24 Bottom added with reinforcement 25 Sealing margin of 25 and 20 250 Valve or inlet hole air at 2 '251 Top edge 26 Main closing system - sealing margin 27 Provisional closing system - Zip 28 System for first opening - break line 29

Notch that starts breaking 290 Upper part separated after first opening 291 Secondary walls 3,3A, 3A ', 3B, 3B', 3C Secondary compartments 30,30A, 30A ', 30A ", 30B, 30B', 30C Secondary hole 31 , 31 Sealing side zone 310 Joining contour at 2 32 Lateral contours 34 Upper contour 35 Secondary closure system - sealing margin 37

Provisional closure system - Zip 38 System for first opening - break line 39 Products 4 Main product 4A Secondary product 4B

Product stack 40 Product tip 41 Plug 5 Double hole plug 50 Mixer plug 51 Main films 6.6 ’Secondary film - folded film 7, 7’ Reinforcement band 8, 8 ’Thermal screen 9

Claims (13)

1. Multi-compartment bag (1), intended to package at least one product (4), consisting of a main bag (2), typically intended to package a main product (4A), and with two side walls or main faces (20) formed from a folded film, or two main films (6, 6 '), with the sealed side edges (21), and said main bag (2) has at its upper end (23) a main filling hole ( 22) provided with facing margins or upper sealing edges (220) that form a main closure system (27), and said main bag (2) has at its lower edge or end (24) an added bottom sealed to said main walls and provided with a vertical support system, in which: a) The bag has at least one secondary wall (3) attached to the main bag (2) to form at least one secondary compartment (30) provided with a secondary hole (31) allowing access to said secondary compartment (30), typically with the intention of packaging a secondary product (4B), and said secondary orifice (31) has a secondary closure system (37). b) The main bag and / or the secondary compartment have an easy opening system. c) The vertical support system has a reinforcement that creates a fold with an "A" shaped profile (25), and said reinforcement (25) is typically formed by a folded reinforcement band portion or by two portions of reinforcement sealed together. d) The secondary compartment (30, 30A) is inside the main bag (2), the secondary wall (3) is a secondary wall (3A) that forms a division of said main bag (2) that leads to the formation of two compartments, the upper contour (35) of said secondary wall (3A) forms a division of said main filling hole (22), a face of said upper contour is facing an upper edge forming said main hole (22 ') , the other face of said upper contour is facing the other upper edge to form said secondary hole (31 '), and is characterized by the fact that each face of said upper contour and the upper edge located in front of said face have an area sealing side (221, 310) adjacent to said sealed side edges (21), so that they allow more easily to separate the upper contour and the upper edges, and allow access to the main (22 ') and secondary (31') holes .

2.

Bag according to claim 1 wherein the secondary wall (3) is connected to said main bag (2) by at least one joint contour (32) sealed to said main bag (2), such that said main bag (2) and said secondary compartment have a common sealing margin.

3.

Bag according to claim 2 wherein said joint contour (32) coincides with at least one of said sealed edges of the main bag, typically one of the sealed side edges (21) of the main bag (2), of so that said secondary wall (3) can be attached to the main bag (2) without an additional sealing stage compared to those necessary to make the main bag (2).

Four.

Bag according to claim 3 wherein the secondary compartment (30) has two sealed lateral contours (34), said lateral contours (34) and the lateral edges (21) are typically superimposed to form the secondary compartment (30) without a stage of additional sealing compared to those that are necessary to make the main bag (2).

5.

Bag according to claim 4 wherein the secondary hole (31) is next to the main hole (22), the compartment (30) has a bottom, typically next to the lower end (24), with a bottom contour sealed to said main bag (2).

6.

Bag according to any one of claims 1 to 5 wherein the secondary compartment (3) is a compartment (30A) with said secondary wall (3A) for one of its faces and one of the main side walls (20) for the other side .

7.

Bag according to any one of claims 1 to 6 in which the easy opening system allows breaking the main and / or secondary walls, typically following a predetermined line (29, 39), and the main closing (27) and closing systems Secondary (37) are typically formed by a sealing margin.

8.

Bag according to any one of claims 1 to 7 in which the main closure (27) and / or secondary closure (37) systems have a peelable sealing layer, or a peelable and removable sealing layer, which serve as a system main closure (27) and / or secondary (37).

9.

Bag according to claim 7 wherein the main bag and / or the secondary compartment have a provisional closure system (28) and / or (38), typically formed by a "zip" strip or an adhesive layer by

cold pressure

10.

Bag according to any one of claims 1 to 9 wherein the main side walls (20, 20A)

They are made with single or multi-layer films, typically consisting of multilayer combinations based on PET, OPP, OPA, PE, PP, aluminum, or extruded films based on PE, PP, PA or EVOH. 11. Bag according to any one of claims 1 to 10 wherein the secondary wall or walls (3, 3A) are of a material suitable for sealing on one or two sides according to the type of bag, material that typically can be: PE , PP, a multilayer material based on PE or PP, or with PE or PP on the external faces, possibly 10 with a layer of barrier material, typically aluminum or EVOH. 12. Bag according to any one of claims 1 to 11 wherein the main bag (2) and / or the secondary compartment (30, 30A, 30A ', 30A ", 30B, 30B', 30C) have an accessory intended to facilitate the use of the bag (1), typically a plug (5), which can have a double hole (50) or a mixer (51). fifteen 13. Application of the bag according to any of claims 1 to 12 to the packaging of, typically, the following products: folded items, such as wipes, napkins, liquid and pasty products, such as pastry dough, typically a marbled cake, pastry dough together with its corresponding dish, detergent products or chemicals, powdered products, sauces, such as ketchup, 20 mustard, cosmetic products, promotional or gift items, or instruction manuals.