FR2927317A1 - PACKAGING FOR THE PACKAGING OF TWO SEPARATE COMPONENTS. - Google Patents

Abstract

The package (10) is formed from a flexible tubular sheath (54) made of a sheet material (46) having an inner sealable layer (12). The sheath is sealed at two opposite ends by two peel resistant end welds (22, 24) extending in respective transverse directions, and is sealed between the two ends by an intermediate (26), brittle and fit in the peel, extending in a transverse direction substantially orthogonal to the directions of the end welds (22, 24) so as to delimit two compartments (28, 30) of generally tetrahedral shape suitable for respectively containing two components, so as to that a thrust exerted externally on at least one of the compartments is able to cause a rupture of the intermediate weld (26) and the communication of the two compartments (28, 30) to ensure a mixture of the two components within itself of the packaging. Application in particular to the packaging of cosmetic products.

Description

The invention relates to the field of packaging and more particularly relates to a package for packaging two separate components. BACKGROUND OF THE INVENTION

Packages of this type are already known which have two housings or compartments adapted to receive two separate components and which make it possible to communicate these two compartments, at the desired time, to achieve a mixture of the two components in the package itself. immediately before use.

Such packages are particularly suitable when the two components are chemically stable only when they are separated and can therefore be mixed only at the time of their use.

The components may be in the same physical state or in different physical states: liquid / powdery, liquid / liquid, powdery / powdery. Known packages of this type are most often in the form of a flat bag whose two compartments are separated by a wall which is liable to break when pressure is exerted on the packaging itself to cause mixing of the two components.

However, the flat shape of the bag does not optimize the volumes dedicated to the two components and is not conducive to the exercise of pressure capable of causing rupture of the separation between the two compartments.

The object of the invention is in particular to overcome such disadvantages.

It proposes for this purpose a packaging for the packaging of two separate components, which is formed from a flexible tubular sheath made of a sheet material having an inner layer suitable for sealing, and wherein the sheath is sealed to two ends opposite by two peel-resistant end welds extending in respective transverse directions, and are sealed between the two ends by an intermediate, brittle and peelable weld extending in a substantially transverse direction; orthogonal to the directions of the end welds so as to delimit two compartments of generally tetrahedral shape appropriate to contain respectively the two components.

In this way, a thrust exerted externally on at least one of the two compartments is able to cause a rupture of the intermediate weld and the communication of the two compartments to ensure a mixture of the two components within the packaging itself .

The two compartments each have a general tetrahedron shape, i.e., a three-dimensional shape that optimizes the volume with respect to the dimensions of the package.

Moreover, this three-dimensional shape facilitates the handling of the package to exert sufficient pressure may cause the breaking of the intermediate weld by simple peeling.

In this regard, the end seals are made to be peel resistant and can therefore be described as strong seals, while the intermediate seam which is designed to allow peeling can be described as brittle solder.

The choice of the inner layer of the sheet material must therefore be carried out on materials that can be sealed by applying heat, under conditions that allow either the constitution of resistant welds, or the constitution of fragile welds. When speaking here of peeling, it is the separation between them of two walls vis-à-vis the inner layer, which were previously joined by welding.

In another aspect, the invention relates to a method of manufacturing a package as defined above.

In the description which follows, given by way of example only, reference is made to the accompanying drawings, in which:

- Figure 1 is a perspective view of a package according to the invention before use, wherein the two compartments are separated; - Figure 2 is a perspective view of the package of Figure 1 after placing in communication of the two compartments and before use of the mixture thus formed; Figure 3 is a schematic sectional view of a multilayer type sheet material comprising an inner layer and an outer layer; FIG. 4 is a view similar to FIG. 3 of a sheet material, of the multilayer type, comprising an inner layer and two outer layers;

Figure 5 is a partial view of an end weld incorporating a pre-cut line; and

FIG. 6 is a diagrammatic representation of a packaging manufacturing plant for carrying out the process of the invention.

Figure 1 shows a package 10 formed from a flexible tubular sheath made of a sheet material. It is a multilayer type material which has an inner layer 12 (FIG. 2) coated with at least one outer layer 14 forming a barrier and / or printing medium, and which will be described in detail below. The inner layer 12 must have the particularity of being sealable, i.e. sealable on itself under controlled conditions of temperature and pressure to effect a weld.

In the example, the sheath is wound on itself from a strip of the multilayer material, so that the sealable inner layer is directed inwardly of the sheath. The strip of starting material is joined by welding its longitudinal edges and the longitudinal weld 0 'thus obtained is designated by reference 16 in FIG.

The inner layer 12 is preferably made of polyethylene, but it can also be formed of other similar materials. In the example of Figure 4, the sheet material has in addition to the inner layer 12, an outer layer 18 forming a barrier, itself coated with an outer layer 20 forming a print medium.

The barrier layer is advantageously chosen from among aluminum, silica, EVOH (ethylene vinyl alcohol copolymer, and other similar materials), and the printing support layer is advantageously chosen from kraft paper. , polyester, polypropylene and the like.

As can be seen in FIG. 1, the tubular sheath thus formed is sealed at two opposite ends by two end welds: a weld 22 (on the left side of FIG. 1) and a weld 24 (on the right side of FIG. 1) which are made in transverse directions of the sheath by flattening the sheath on itself to close it. These end welds are made by heat sealing under controlled conditions of temperature and pressure so as to form resistant welds which are not likely to tear under the effect of the normal pressure of use of the package, as we will see later.

In the example, the welds 22 and 24 are generally coplanar and substantially linear. Between the two welds 22 and 24, and substantially mid-distance from these last oS, is formed an intermediate weld 26 which extends in a transverse direction of the sheath, substantially orthogonal to the respective directions of the welds. end 22 and 24. This intermediate weld 26 is made under controlled conditions different from those of the welds 22 and 24, that is to say at a lower temperature, and under a generally lower pressure, so as to achieve fragile weld, that is to say that is likely to be peeled by detachment of the two walls vis-à-vis the inner layer.

This intermediate weld 26 is generally linear and is therefore substantially orthogonal to both the end weld 22 and the end weld 24. The tubular sheath thus delimits two compartments: a compartment 28 between the welds 22 and 26 and a compartment 30 between the welds 26 and 24. These compartments are intended to contain respectively two separate components which will be mixed before use.

Due to the mutual orientation of the welds 22, 24 and 26 and their distance between them, the compartments have a substantially tetrahedral shape, that is to say formed each of four generally triangular faces. It is quite obvious that one can not obtain here a perfectly geometrical tetrahedron since the edges of the tetrahedron are necessarily curved at least for some of them and that the faces are not rigorously flat.

The two tetrahedra thus formed may be the same or different. In particular, in a preferred embodiment, the two compartments 28 and 30 have respective substantially equal volumes, but this is not an obligation.

Moreover, the tetrahedra may have irregular shapes, the preferred form being that which approaches the regular tetrahedron whose faces are delimited by equal sides.

The tetrahedron shape is advantageous because it makes it possible to produce a three-dimensional packaging that optimizes the volume or the capacity of the compartments with regard to the overall length of the package, that is to say the distance between the welds 22 and 24.

This form is also advantageous for allowing communication between the two compartments. Indeed, the two components (not visible in Figure 1) that are contained in the respective compartments 28 and 30 are initially completely separated from each other, the weld 26 forming a barrier between the two compartments. When it is desired to use the package, pressure is exerted externally on at least one of the compartments so as to cause a breakage of the intermediate weld 26 which is likely to be peeled given its fragility. The three-dimensional shape of the two compartments facilitates handling of the package and the exercise of pressure capable of causing this coat. After peeling the intermediate seam 26, the packaging adopts a bag shape as seen in FIG.

The components can thus be mixed and used. As recalled above, the invention is of interest when the two components are chemically stable only when they are separated and they can be mixed at the very moment of their use.

The mixture thus produced can then be expelled from the package by pressure. For this, and as can be seen in particular in FIGS. 1 and 5, the weld 24 is made differently from that of the weld 22. It comprises firstly a first zone 32 of greater width L1 in which extends a pre-cut line 34 and a second zone 36 of smaller width L2, and which extends the first zone so as to define a discharge channel 38 of generally rectangular shape. Zones 32 and 36 are identified by hatching in Figure 6 for ease of understanding. The pre-cut line 34 allows the user to tear the weld 24 from an edge 40 of the weld to a point 42 at the channel 38. The mixture can then be expelled from the package via the channel 38 by applying external pressure on the package.

Referring now to Figure 6 to describe an embodiment of a packaging manufacturing plant according to the invention. This installation comprises a coil 44 of a film of the sheet material 46, which is first joined by its longitudinal edges 48 and 50 to form a longitudinal weld 16 as previously described. This welding is performed by means of a longitudinal sealing station 52.

The sheath thus formed is then moved in a vertical direction in the downward direction of travel designated by the arrow F. At the outlet of the longitudinal sealing station 52, a sheath 54 is formed whose inner wall consists of the inner layer capable of sealing. Then, the end weld 22 is made, which at the same time constitutes the end weld 24 of a previous packaging, thanks to an end sealing station 56.

Subsequently, a dose of a first component (component A) is filled by means of a filling station 58 comprising a reservoir 60 and a filling nozzle 62 which opens at the top of the sheath. After filling the component A, the intermediate seam 26 is made by means of an intermediate sealing station 64, which makes it possible to close the first compartment 28. The intermediate sealing station 64 here extends in a direction orthogonal to the station end sealing 56. This allows to shift by 90 ° the direction of the intermediate welds compared to that of the end welds, the directions of these welds being horizontal in the example of the installation shown.

Then, the filling of the second component (component B) is carried out by means of another filling station 66 which comprises a reservoir 68 and a nozzle 70. After that, the second end weld is sealed thanks to the sealing station 56 already cited, this weld also performing the end weld of the next package.

Successive packaging is thus produced according to the invention by a continuous manufacturing process. A station 72 is provided for making the pre-cut lines 34 mentioned above. Next, a final cutting station 74 is provided for cutting and separating the packages from each other. It is possible at this stage to form individual packages or strings of individual packages. The installation shown in FIG. 6 thus makes it possible to implement the following process steps:

a) preparing a tubular sheath 54 made of a sheet material having an inner layer 12 capable of sealing;

b) providing a first end weld 22 of the sheath in a transverse direction of the sheath to form a sealed first end resistant to peeling;

c) pouring a dose of a first component A into the sheath beyond the first end weld 22;

D) providing an intermediate sheath weld 26 capable of peeling in a transverse direction of the sheath substantially orthogonal to the first end weld 22 to delimit a substantially tetrahedral first compartment 28 enclosing the first component 25 ;

e) pouring a dose of a second component B into the sheath beyond the intermediate seam 26;

F) forming a second end weld 24 of the sheath in a transverse direction of the sheath, substantially orthogonal to the direction of the intermediate seam 26 to form a peel-resistant second sealed end and delimiting a second compartment 30 of substantially tetrahedral shape containing the second component B.

In the invention, the end welds 22 and 24, made respectively in steps b) and f), are performed by heat sealing at a temperature of 120 to 220 ° C and a pressure of 2 to 6 bar for the polyethylene. By way of example, it is possible to apply a temperature of 160 ° C. to 12 cycles / minute and a pressure greater than or equal to 4 bars. By cons, the intermediate weld 26 of step d) is performed by heat sealing at a temperature of 90 to 150 ° C and a pressure of 2 to 6 bar for the polyethylene, to facilitate the subsequent rupture of the intermediate weld by peeling . By way of example, a temperature of 105 ° C. can be applied at 12 cycles / minute and a pressure of 4 bars.

The invention allows for packaging whose respective compartments have substantially tetrahedral shapes and whose shape characteristics and dimensions may vary.

For example, the total volume of the package, after peeling of the intermediate weld, may be of the order of 5 to 150 ml, these values being given for information only.

The components of the package may be present in the same physical state or in different physical states, as mentioned in the introduction.

The invention is particularly applicable to the realization of packaging in the field of cosmetics, for example to separately contain a serum and essential oils. Other areas of application are possible. ol

Claims (14)

claims A package for packaging two separate components, characterized in that the package (10) is formed from a flexible tubular sheath (54) made of a sheet material (46) having an inner layer (12). ) sealable, in that the sheath is sealed at two opposite ends by two peel resistant end welds (22, 24) extending in respective transverse directions, and is sealed between the two ends by a weld intermediate (26), fragile and peelable, extending in a transverse direction substantially orthogonal to the directions of the end welds (22, 24) so as to delimit two compartments (28, 30) of their own overall tetrahedral shape to contain respectively the two components, so that a thrust exerted externally on at least one of the compartments is able to cause a rupture of the intermediate weld (26) and the setting in communicating the two compartments (28, 30) to ensure a mixture of the two components within the package itself. 2. Packaging according to claim 1, characterized in that the inner layer (12) is coated with at least one outer layer (14, 18, 20) forming a barrier and / or printing medium constituting a multilayer material. 3. Packaging according to one of claims 1 and 2, characterized in that the inner layer (12) is polyethylene or the like material. 13 to. 4. Packaging according to one of claims 2 and 3, characterized in that the inner layer (12) is coated with an outer barrier layer (18), itself coated with an outer layer forming a printing medium (20). 5. Packaging according to one of claims 2 to 4, characterized in that the barrier layer is selected from aluminum, silica, EVOH, and the like. 6. Packaging according to one of claims 2 to 5, characterized in that the printing medium layer is selected from kraft paper, polyester, polypropylene, and the like. 7. Packaging according to one of claims 1 to 6, characterized in that the end welds (22, 24) are generally coplanar. 8. Packaging according to one of claims 1 to 7, characterized in that the two compartments (28, 30) have respective volumes substantially equal. 25 9. Packaging according to one of claims 1 to 8, characterized in that one (22) of the end welds comprises a pre-cut line (34) to facilitate the opening of the package and the expulsion of the mixture of the two components. 30 10. Packaging according to claim 9, characterized in that said end weld (22) comprises a first zone (32) of greater width in which extends the pre-cut line (34) and a second zone (36). ) of smaller width which extends the first zone to define a discharge channel (38) which is open when the film material is cut along the pre-cut line (34). 11. A method of manufacturing a package according to one of claims 1 to 10, characterized by the steps of: a) preparing a tubular sheath (54) made of a material having an inner layer (12) suitable for sealing; b) providing a first end weld (22) of the sheath in a transverse direction of the sheath to form a sealed first end resistant to peeling; c) pouring a dose of a first component into the sheath beyond the first end weld (22); D) providing an intermediate sheath weld (26) capable of peeling in a transverse direction of the sheath substantially orthogonal to the first end weld (22) to delimit a substantially shaped first compartment (28). tetrahedral containing the first component (A); e) pouring a dose of a second component (B) into the sheath beyond the intermediate seam (26); f) forming a second end weld (24) of the sheath in a transverse direction of the sheath, substantially orthogonal to the direction of the intermediate seam (26) to form a peel-resistant second sealed end and delimiting a second compartment (30) of substantially tetrahedral shape enclosing the second component (B). The method of claim 11, characterized by the further step of: g) providing a pre-cut line (34) in at least one of the end welds. 13. Method according to one of claims 11 and 12, characterized in that it comprises the manufacture of a plurality of packages (10) one after the other 15 from the same sheath and cutting cross-section of the sheath to form individual packages or strings of individual packages. 14. Process according to one of claims 11 to 13, characterized in that the first end weld (22) of step b) and the second end weld (24) of step f) are carried out. by heat-sealing at a temperature of 120 to 220 ° C and a pressure of 2 to 6 bar, while the intermediate seam (26) of step d) is carried out by heat-sealing at a temperature of 90 to 150 ° C and at a pressure of 2 to 6 bars to facilitate the subsequent breakage of this intermediate solder by peeling.