WO2013001217A1

WO2013001217A1 - Sachet for a sample of a fluid product

Info

Publication number: WO2013001217A1
Application number: PCT/FR2012/051437
Authority: WO
Inventors: Philippe Moussion; Guy-Noël SIBILEAU
Original assignee: Socoplan
Priority date: 2011-06-27
Filing date: 2012-06-22
Publication date: 2013-01-03
Also published as: FR2976924B1; US20140199003A1; EP2723652A1; FR2976924A1

Abstract

The sachet (1) for a metered quantity of a fluid product comprises a first part (4a) and a second part (4b) in the form of sealed flexible layers having an annular attachment sector (8), a gripping region (13), and a sealed cavity (14), and, in a part of the gripping region (13), the layer portion of the first part (4a) and/or the second part (4b) is folded on itself from the edge (3) in a folded flap (18a, 8b), so as to form a thicker region (18) having a thickness at least twice the thickness of the layer portion of this part (4a, 4b), which makes up for at least part, or equalizes, or exceeds the overthickness in the region of the cavity (14), on account of the presence of the metered quantity of fluid product (P) located therein, so as to reduce or eliminate the risk of damage to the sachet (1) filled with the metered quantity of fluid product (P) when it is inserted into a magazine.

Description

SAMPLE SAMPLE OF FLUID PRODUCT

The invention relates to a sample bag of a perfumery fluid, cosmetic, care, or medical use, specially adapted to be inserted in a magazine. More specifically, it relates to such an empty sample bag of product, such a sample bag filled with product and a method of manufacturing such a sample bag filled with product.

There is already known a sample bag of a fluid product for perfumery, cosmetics, care, or medical use, specially adapted to be inserted in a magazine.

According to the document EP-A-1034073, such a sample bag comprises a lower sealing layer having an inner surface and an outer surface, an upper sealing layer having an inner surface and an outer surface, an annular tight seal and peelable from both. layers, adjacent to the peripheral annular edges facing the two layers forming the peripheral edge of the sample bag, by means of an unsealed portion forming gripping tabs for opening, and located in an annular contact zone of their two internal surfaces, a fluid-tight cavity bounded by the annular sealing and by the two non-mutually secured zones of the internal surfaces opposite the two layers which it limits, a structure disposed in the cavity such as a network of non-woven polypropylene fibers in which the sample of fluid product is absorbed, the structure having the function of forming an applicator of the fluid product and having for other function to collect the compressive forces that exist while sample bags are inserted in stacked magazines, which allows the seal to resist. The thickness of the sample bag is uneven, thinner on its peripheral edge where it is defined by the thickness of the two superimposed and sealed layers, thicker in its central part where it is defined by the thickness of the two layers spaced apart and the thickness of the internal structure placed between them. To ensure its functions, the internal structure has a substantial thickness. Thus, the sample bag has a marked unevenness of thickness, which can be a nuisance given its insertion in a magazine and inevitably affects its aesthetic appearance. On the other hand, the unsealed portion forming a gripping tab for opening is found to be inconvenient to use. The method of producing such a sample bag requires having structures or providing a step of producing such structures. It also requires a step in which the sample of fluid product is absorbed by the structure and a step of insertion of the structure into the cavity. This production method is therefore complex with the inherent drawbacks of sample bags for which the imperatives of speed, simplicity, safety and cost of manufacture are important. Document US 2005/0061710 describes a sample bag of the same general type which, unlike the previous one, does not require an internal structure and in which the compression forces are collected as a result of the prediction, as regards the lower layer, a lower annular portion protruding from its inner face limiting the receiving space of the fluid sample, and, with respect to the upper layer, an upper annular portion projecting from its outer face, the two parts lower and upper annular cooperating with each other and mutually reinforcing so as to accommodate the compressive forces that exist while the sample bags are inserted in stacked magazines. Here too, the thickness of the sample bag is uneven, especially as the annular parts are prominent, and the aesthetic appearance of the sample bag is affected as a result of the presence of the annular parts. Document US 2005/0011794 describes a sample bag fixed on a rigidification card with the interposition of shims forming spacer so as to provide space for the bag once inserted in a magazine and while it is exerted on him a compressive force. The document FR 2,599,716 describes a device for the conditioning, the preservation in time, the transport of samples of essences or mixture of fragrant essences in the liquid state under conditions ensuring the stability of the olfactory properties of the essences, said device consisting of a support having absorbent properties and neutral with respect to the essential product, such as a tongue of paper or cardboard, said support being inserted into a hermetic envelope consisting of a bag whose walls welded together are constituted of a complex of a layer of synthetic material and a sheet of metal.

FR 2 908 748 discloses a dose bag consisting of two walls of the same dimensions welded together on their outer periphery so as to constitute a flat closed container containing a promotional sample of a fluid product and intended to be inserted into a magazine, said dose bag being such that it comprises a protruding element welded substantially in the center of the face of one of said walls so as to prevent said walls from being pressed against each other under the effect of an external force and to avoid thus the risk of a rupture of said bag.

The state of the art also includes US 2007/158399.

The problem underlying the invention is therefore to provide a sample bag of a fluid product for perfumery, cosmetics, care, or medical use, specially adapted to be inserted into a magazine (empty or filled of the product) and a method of manufacturing such a sample bag filled with product, which in the first place are such that the sample bag thus inserted into a magazine, itself in a stack of magazines, is resistant to compression forces to which it is subjected, secondly are such that the disadvantages known to date are overcome, thirdly such that one can dispense with an internal structure if desired, such an internal structure being however possible, a stiffening board or shims forming spacer, that the thickness of the sample bag is equal or at least as little uneven as possible, besides thin, that the aesthetic appearance It is important to ensure that the two outer surfaces of the two layers can be substantially smooth, that the opening of the sample bag is easy, and that the method of producing the sample bag fulfills the requirements of the sample bag. speed, simplicity, safety and manufacturing cost sought for this type of product.

For this purpose, according to a first aspect, the subject of the invention is a sachet adapted and intended to contain a dose of a fluid product, comprising a first portion in the form of a portion of a sealing layer of a certain flexibility and a second portion in the form of a sealing layer portion of a certain flexibility.

The first part and the second part of the bag are arranged opposite so that the bag comprises: an annular sector of mutual interconnection sealed and removable by an appropriate opening action of the first part and the second part in a contact sector reciprocal of their two internal surfaces,

a gripping zone which, outwards, is adjacent to the peripheral edge of the bag and which, inwardly, is adjacent to the securing sector, in which the first part and the second part are not mutually secured so as to arranging a tongue-like gripping means for opening the bag, a fluid-tight cavity bounded by the securing sector and by the two non-mutually secured sectors of the internal surfaces opposite the first part and the second part which it limits, able to receive the dose of fluid product to be bagged. The bag is such that in at least a portion of said gripping area, the layer portion of at least one of the first portion and the second portion is folded on itself at least from the peripheral edge. a folded flap, so as to form an over-thickened region, of thickness at least twice the thickness of the portion of the layer of this portion, the bag thus comprising in the over-thickened region an excess thickness which at least partially compensates, or equalizes , or exceeds the extra thickness in the region of the cavity, due to the presence of the fluid dose therein, so as to reduce or eliminate the risk of damage to the sachet filled with the dose of fluid when it is inserted in a magazine.

According to one embodiment, the folded flap of the first and / or second portion is also secured to itself, forming a permanently folded flap.

According to embodiments, the folded flap of the first portion and / or the second portion extends in the longitudinal direction to the vicinity of the annular securing sector.

According to embodiments, a portion of the folded flap of the first portion and / or the second portion extends longitudinally adjacent to a portion of the annular securing sector forming its breaking edge. In particular, according to embodiments, said portion of the folded flap is located centrally on said folded flap, and / or said portion of the annular securing sector is located centrally on a segment of said annular securing sector. According to one embodiment, the folded flap of at least one of the first portion and the second portion is in all, or substantially all, the gripping zone, the gripping zone being coincidental, or substantially coincidental, with the region surépaisse.

According to embodiments, the gripping zone and / or the overlying region extends peripherally along a portion of the peripheral edge over a certain length and extends in the orthogonal direction over a certain width, the length and the width being sufficient to allow on the one hand gripping for the opening of the bag and on the other hand the reduction or elimination of the risk of damage to the sachet filled with the dose of fluid when it is inserted in a magazine. In particular, according to embodiments, said length is at least one third of the length of the peripheral edge, in particular of the order of one half or at least half the length of the peripheral edge; Alternatively or cimulatively, said width is at least a quarter of the length of the bag in the same orthogonal direction, in particular of the order of one third or at least one third of the length of the bag in the same orthogonal direction.

According to embodiments, the gripping zone and / or the overlying region extends peripherally outwardly either all, or substantially all, or only a fraction of the peripheral edge of the bag. Alternatively or cumulatively, the gripping zone and / or the over-thickened region is either in a single section or in several distinct sections, contiguous or spaced apart, in particular in two diametrically opposite sections vis-à-vis the bag. According to one embodiment, the gripping zone and / or the super-thick region has a limit in the interior of which the shape defines as a whole a line or a surface of folding and opening of the two parts of the gripping zone and / or overweight area. According to one embodiment, in at least a portion of said gripping zone, the folded flap of the first portion and the folded flap of the second portion are located in line with the same overspray region, of thickness at least equal to twice the thickness of the layer portion of the first portion plus twice the thickness of the layer portion of the second portion. In particular, according to one embodiment, the folded flap of the first part and the folded flap of the second part are located opposite one another.

According to one embodiment, the bag is limited on both sides by two outer faces substantially flat or without noticeable relief aesthetically.

According to one embodiment, the first part and the second part and the bag as a whole have a certain flexibility and overall hold especially flat.

According to one embodiment, the layer of the first part and / or the layer of the second part has a thickness of the order of 1/10 ^th of a millimeter. According to the embodiments, the layer of the first part and the layer of the second part are either identical or different as to the material and / or the thickness.

According to the embodiments, the peripheral edge of the bag corresponds to the two peripheral edges coinciding with the first portion in the form of a portion of the layer and the second portion in the form of a portion of a layer, and in particular that its peripheral edge has a contour of shape. general, or in a general, polygonal shape, such as a square or rectangular shape.

According to a particular embodiment, the portion of the first portion of the layer and the portion of the second portion of the layer are folded and secured on themselves facing each other, in all, or substantially all, the area of gripping, in two folds folded with securing, forming an over-thickened region, of thickness equal to twice the thickness of the portion of the first part of the layer plus twice the thickness of the portion of the second part of the layer, the two folded flaps with fastening extending in the longitudinal direction to the vicinity of a rupture primer of the annular securing sector, the gripping zone and the extra thick region extending peripherally over a certain length of the peripheral edge of the bag, the bag being limited on both sides by two outer faces substantially flat or without aesthetically noticeable relief and having a peripheral edge corresponding to both peripheral edges in coincidence of the first part and the second part.

According to a second aspect, the subject of the invention is a sachet containing a dose of a fluid product, comprising a sachet such as that previously described and a dose of fluid product received in the cavity of the sachet.

According to one embodiment, the dose of fluid product is received in the bag cavity, without intermediate support.

According to another embodiment, the dose of fluid product impregnates a support, said support thus impregnated with fluid product being received in the cavity of the bag. In one embodiment, the thickness of the sachet containing a dose of fluid in the overspray region at least partially offsets, or equalizes, or exceeds the thickness in the region of the cavity where the fluid dose is located. And the sachet containing a dose of a fluid product is limited on both sides by two large outer surfaces substantially flat or without noticeable relief aesthetically.

According to a third aspect, the subject of the invention is a process for manufacturing a sachet containing a dose of a fluid product as just described.

In this process, one or two strips of layer-shaped material are available and fluid is available.

This process is such that, successively:

the one or more strips of layer-shaped material are unwound so as to form a continuous layer-like first web and a continuous layer-like second web and the web of first web is synchronously engaged part and the second part band,

a longitudinal layer portion of at least one of the first part band and the second part band is folded on itself, at least starting from the longitudinal peripheral edge in the course of this band, in one folded flap, so as to form a longitudinal overspeed region, adjacent to the longitudinal peripheral edge of this strip,

while the first part band and the second part band are facing one another and in contact with each other towards their longitudinal peripheral edges, at each operation of a succession of analogous operations, the dose of fluid to be bagged is inserted between the first-part band and the second-part band and the band of the first part and the band of the second part are secured in an annular sector so as to form a cavity, each successive dose of fluid product being received in each successive cavity,

the folded flap of the first part band and / or the second part band is fixed longitudinally on itself,

at least transversely the first part strip and the second part strip, thus secured, are cut out between the successive cavities filled with the doses of product, so that at each operation a succession of similar operations, a sachet containing a dose of a fluid product is separated

According to the embodiments, one has a single strip of layer-shaped material and from this one forms a first-party band and a second-party band, that is to say two strips of material and thus one has a first-party band and a second-party band.

Several embodiments of the invention will now be described with the aid of the drawings, in which:

FIG. 1 is an elevational view of a possible embodiment of a sachet containing a dose of a fluid product according to the invention, in which the sachet is of peripheral shape of rectangular shape with slightly rounded corners, illustrating the external face; one of the two parts in the form of a layer portion of the bag, the annular securing sector of the bag limiting the cavity of the receiving bag of the dose of fluid product, and the gripping zone of the bag, here in two sections diametrically opposite vis-à-vis the bag, the view being cut right to the cavity to illustrate the dose of fluid. FIG. 2 is a sectional view of the bag of FIG. 1 along the sectional line II-II parallel to the sections of the grip zone and to the right of the cavity, illustrating the two portions of the bag portion of the bag. , the annular securing sector, and the receiving cavity of the fluid product dose, the thicknesses not being scaled for reasons of readability.

- Figure 2A is a partial enlargement of Figure 2, the thicknesses are not scaled for readability.

FIG. 3 is a sectional view of the bag of FIG. 1 along section line III-III parallel to the sections of the gripping zone and to the gripping zone right and of the overlying region, illustrating a portion of a layer of the first part and a portion of the layer of the second part folded and secured on themselves, facing each other in the gripping zone, forming the over-thickened region, of thickness equal to twice the thickness the layer portion of the first portion plus twice the thickness of the layer portion of the second portion, the thicknesses not being scaled for readability reasons.

- Figure 3A is a partial enlargement of Figure 3, the thicknesses are not scaled for reasons of readability.

FIG. 4 is a fragmentary sectional view of the bag of FIG. 1 along section line IV-IV transverse to the sections of the gripping zone, illustrating the two portions in the form of a layer portion of the bag, the annular sector of FIG. joining, the receiving cavity of the fluid product dose, a portion of the first part of the layer and a portion of the second part of the layer folded and secured on themselves, facing each other in the area for gripping, forming an over-thickened region, of thickness equal to twice the thickness of the layer portion of the first portion plus twice the thickness of the layer portion of the second portion, the two folded portion portions and integrally extending transversely to the vicinity of a rupture primer of the annular securing sector, the two folded and secured layer portions being here applied against each other, the thicknesses being not scale for readability.

- Figure 4A is similar to Figure 4, the two folded and secured layer portions being here spaced from one another, maintaining the integrity of the annular securing sector.

- Figure 4B is similar to Figure 4, the two folded and secured layer portions being here spaced from one another, with rupture of the integrity of the annular securing sector, the cavity being accessible.

FIG. 5 is a diagram illustrating the process for manufacturing a sachet containing a dose of a fluid product, in the case where two strips of material are available.

FIG. 6 is a diagram illustrating the process for manufacturing a sachet containing a dose of a fluid product, in the case where a single band of material in the form of a layer is available. A sachet 1 according to the invention is suitable and intended to contain a dose of a fluid product P, the reference P designating both the dose and the fluid product. The subject of the invention is both the sachet 1 empty of the dose of the fluid product P, and the sachet containing the dose of the fluid product 1 + P.

For the sake of convenience, the description is made particularly with reference to the filled bag 1 + P. Unless otherwise indicated, the description is made with reference to the bag 1 + P in the closed state and in a configuration where it is generally flat relative to a reference plane Q (plane of Figure 1 and the lower part of Figures 5 and 6, orthogonal plane to Figures 2, 2A, 3, 3A, 4, 4A and 4B).

The 1 + P bag is suitable and intended to be inserted in a magazine, and for example maintained in position on a page of such a magazine, and the magazines in question comprising such 1 + P bags being intended to be stacked. The sachet 1 + P is also suitable for use in similar circumstances where significant compression forces are exerted that must be cashed so that the bag keeps its integrity, without burst, pierce or leak. As much as possible, the 1 + P bag is also suitable for use in circumstances where compressive forces such as those mentioned in stacked magazines are not practiced.

The sachet 1 + P is intended to contain a fluid product P such as a perfumery, cosmetic, care, or medical use, especially in the liquid or pasty state. These natures of product may not be limiting.

The sachet 1 + P is suitable for a small dose of fluid product P, for example as a sample, such as for example a volume of less than 30 ml, in particular less than 10 ml, more especially less than 1 ml. ml. These values may not be limiting. Such a pouch 1 + P is thin and typically has a maximum overall thickness of small, for example less than 5 mm, in particular less than 2 mm, these values may not be limiting.

The bag 1 + P is limited by a peripheral edge 3 whose outline, according to the embodiments, is of general shape, or is in a general polygonal shape, such as a square or rectangular shape, but which can also be where appropriate, be curved. The envelope of the peripheral edge 3 has a side of the order of one or several centimeters. For example, in one embodiment, the bag 1 + P has a rectangular contour, possibly with rounded corners, of 6 cm to 8 cm approximately over 3.5 cm to 5.5 cm approximately. This realization and these values may not be limiting. The bag 1 comprises a first portion 4a in the form of a surface layer portion that is surface-tight and watertight, and with a certain flexibility. It also includes a second portion 4b also in the form of a surface layer portion that is surface-tight, watertight, and has a certain flexibility. The first part 4a and the second part 4b are arranged one with the other being associated facing one another, so that the peripheral edge 3 of the bag corresponds to the two peripheral edges 3a, 3b in coincidence of the first part 4a and the second part 4b. In the embodiment shown, the bag 1 or 1 + P, the first part 4a and the second part 4b have an edge 3, 3a, 3b having two long sides 5, longitudinal, parallel to each other and two small sides 6, transverse, parallel between them and four corners 7 which, if necessary can be rounded.

By "longitudinal" is meant that extending parallel to the, or to a large size of the bag 1 or 1 + P, here defined by the direction of the long sides 5. By "transversal", one means that which extends parallel to the, or a small dimension of the bag 1 or 1 + P, here defined by the direction of the short sides 6. Thus, "longitudinal" and "transverse" mean two orthogonal directions in the plane Q. Furthermore, by "longitudinal" one can also hear what is in the driving direction of a strip of continuous first portion in the form of a layer and a strip of continuous second portion shaped of layers used for the manufacture of the sachet 1 + P. According to the embodiments, the layer of the first part 4a and the layer of the second part 4b are identical or on the contrary are different as to the material and / or the thickness.

Typically, the layer of the first portion 4a and the layer of the second portion 4b are of a plastic-type or plastic-based material, where appropriate a complex, for example comprising aluminum. Such a layer of material has the characteristics of having a certain flexibility, together with a certain overall hold such that, in the absence of stress, it remains substantially flat, in a plane parallel to the plane Q. the same is true of the bag 1 or 1 + P taken as a whole. Such a layer of material also has the characteristics of being fluid-tight, of being weldable on itself and of being peelable to break a fastening on itself by welding, by the exercise of a traction force. (tearing) sufficient. It also has the characteristics of being thin and of constant thickness, which can be of the order of 1/10 ^th of a millimeter, this value may not be exhaustive. It also has the characteristic of being folded on itself with a well defined fold line. "Layer" means a thin and solid wall, whether or not it is homogeneous in its thickness (for example a coextruded material).

By "external" is meant what is normally accessible from outside the bag 1 or 1 + P, when it is closed and by "internal", we mean, conversely, what is not not normally accessible.

By "outside" is meant what is in or near the zone of the edge 3 or the closest to it and "inside" means, inversely, what is spaced from the edge 3.

The first part 4a and the second part 4b respectively define the two external faces 4aa and 4ba of the bag 1 or 1 + P, which extend parallel or substantially parallel to the plane Q. These two faces 4aa and 4ba are substantially flat or without relief noticeable aesthetically.

The bag 1 + P comprises an annular mutual securing sector 8 of the first part 4a and the second part 4b in a sector of mutual contact with their two inner surfaces 9a and 9b. This annular securing sector 8 is fluid-tight. It is removable by an appropriate opening action. This means that the sealing can be broken, which opens the 1 + P bag. By "sector" is meant a certain surface area.

In a typical embodiment, the annular securing sector 8 is made by flat welding of the two layers of the two parts 4a and 4b by their two inner surfaces 9a and 9b in contact, and it comprises an inner edge 8a and an outer edge 8b. The spacing between the edges 8a and 8b is sufficient to ensure proper fastening. For example, in an embodiment where the edge 3 of the bag 1 + P has a dimension of the order of a few centimeters, as previously indicated, the spacing between the edges 8a and 8b can be of the order of 2 mm to 5 mm. mm. These values may not be limiting.

In the embodiment shown, the annular securing sector 8 comprises, forming a continuous ring, two rectilinear or substantially rectilinear longitudinal direction segments 10, adjacent to the two long sides 5 of the edge 3, connected at the ends by two generally transverse direction segments. 1 1, hereinafter referred to as "transverse segments", slightly curved with concavity turned inwards, the median portion 12 of each of them (median to the transverse direction of the segment 1 1), forming a vertex, is distal and the outermost. Each of the two transverse segments 1 1 is spaced transversely from the small side 6 to which it is located, so as to form between them a zone 13 of the bag 1 or 1 + P. By "zone" 13, we mean a certain surface area. The bag 1 + P also comprises a cavity 14 limited firstly by the annular securing sector 8, more precisely by its inner edge 8a, and secondly by the two non-mutually secured sectors 15a and 15b of the inner surfaces 9a and 9b opposite, the first part 4a and the second part 4b it limits. The cavity 14 is thin and its thickness may be of the order of the thickness of a layer of material of the first portion 4a or the second portion 4b. This value may not be limiting.

The cavity 14 is adapted to receive the dose of fluid product P to bag and its capacity is adapted to this dose. According to a first possible embodiment of the invention, the dose of fluid product is received directly in the cavity 14 of the bag 1 + P, without being incorporated in an intermediate support such as a network of nonwoven fibers or other, and without the 1 + P bag runs the risk of being damaged when inserted into a magazine. This first realization is possible, an intermediate support is not required.

Which may be the least possible, according to a second possible embodiment, the dose of fluid product P is not received directly in the cavity 14, but indirectly through a medium impregnated with the dose of the fluid product. In this case, this support thus impregnated with fluid product is received in the cavity 14 of the bag. Such a support may, for example, be semi-rigid, semi-flexible. However, such a support does not necessarily have to cash the compression forces due to insertion into a magazine and the stack of magazines, although this is not excluded.

Therefore, the expression "dose of fluid product" covers both the dose of fluid without intermediate support or the support impregnated with the dose of the fluid, according to the embodiment.

Since the first part 4a, the second part 4b and the annular securing sector 8 are fluid-tight, the cavity 14 is also fluid-tight. In an embodiment where the edge 3 of the bag 1 + P has a size of the order of a few centimeters, as previously indicated, the cavity 14 may have a length of the order of 3 cm to 7 cm. These values may not be limiting.

The bag 1 + P also has a gripping zone, which is the zone 13 previously mentioned and described.

To the outside, the gripping zone 13 is adjacent to the peripheral edge 3, 3a, 3b. Inwardly, the gripping zone 13 is adjacent to the securing sector 8, more precisely to its outer edge 8b. In the embodiment shown, the gripping zone 13 is in two distinct and spaced apart sections, diametrically opposite vis-à-vis the 1 + P bag, these two sections being adjacent to the two short sides 6 By "section" is meant a certain surface area.

In the gripping zone 13, unlike the securing sector 8, the first part 4a and the second part 4b are not mutually secured and can, therefore, be moved relatively relative to each other. This constructive arrangement makes it possible to provide a tongue-like gripping means capable of being gripped between two fingers, with a view to opening the bag 1 + P in order to access the cavity 14 and the dose of fluid product P. In the embodiment shown, in all, or at least substantially all, the gripping zone 13, the layer portion of the first portion 4a and the layer portion of the second portion 4b are folded and secured to themselves in zones 16a and 16b, respectively, by their inner surfaces 9a and 9b coming into contact with themselves, typically by flat welding. For the first part 4a, it is formed a fold 17a coinciding with the edge 3, 3a. For the second part 4b, it is formed a fold 17b coinciding with the edge 3, 3b. By "zone" 16a, 16b is meant a certain area of coverage.

The portion of the layer portion of the first part 4a thus folded and secured to itself is called "first folded flap" (here with securing) and referenced 18a and the portion of the layer portion of the second portion 4b thus folded and secured to itself is called "second folded flap" (here with solidarization) and referenced 18b. By "flap" 18a, 18b is meant a certain area of surface.

When the bag 1 or 1 + P is flat, the first folded flap 18a and the second folded flap 18b are arranged opposite one another, against each other, but without being secured to one another. to the other, since they are part of the zone 13. This constructive arrangement makes it possible to form a super-thickened region 18 here confused, or substantially confused, with the gripping zone 13. By "region" 18, one means a certain surface area.

In the embodiment shown, the thickness of the oversize region 18 is equal to the thickness of the first folded flap 18a plus the thickness of the second folded flap 18b. It is therefore equal to twice the thickness of the layer portion of the first portion 4a plus twice the thickness of the layer portion of the second portion 4b.

This realization is not limiting. More generally, the bag 1 or 1 + P is such that, in at least a portion of the gripping area 13, the layer portion of at least one of the first portion 4a and the second portion 4b is only folded on itself at least from the peripheral edge 3a, 3b, so as to form the over-thickened region 18. Thus, the over-thickened region 18 may have only one folded flap and not two as in the embodiment shown. Also, unlike the embodiment shown, the folded flap 18a, 18b can be without securing. Finally, more generally than in the embodiment shown, the over-thickened region 18 may be at least twice the thickness of the portion of the layer of portion 4a or 4b folded on itself to form the flap 18a or 18b .

In all cases, the extra thickness of the oversize region 18 is such that, according to the embodiments, it compensates at least in part, or more preferably equalizes or exceeds the extra thickness in the region of the cavity 14 due to the presence of the dose of product P fluid that is there (if necessary impregnated support). Thus, it decreases or eliminates the risk of damage to the 1 + P bag when inserted in a magazine. On the other hand, the extra thickness of the oversize region 18 reinforces the gripping area which facilitates the opening operation of the 1 + P bag.

The first folded flap 18a and / or the second folded flap 18b extends in the longitudinal direction and inwardly, to an inner edge 19a, 19b, respectively, which is the edge of the first-party or the second-party tape used for the manufacture of the 1 + P sachet. According to the embodiments, the edge 19a and / or the edge 19b is located in the vicinity of the annular securing sector 8 and its outer edge 8b, here the segment 1. In the embodiment shown, a portion 20 of the first folded flap 18a and / or folded second flap 18b extends in the longitudinal direction and inwardly so as to be adjacent or close to a portion of the sector. annular fastening 8 which forms a breaking primer thereof. In the embodiment shown, the portion 20 is located centrally with respect to the transverse direction of the folded flap 18a, 18b. On the other hand, the portion of the annular securing sector 8 forming the rupture primer is the middle part 12, previously mentioned and described. This provision may not be limiting.

So as to best allow on the one hand the grip for the opening of the bag 1 + P and on the other hand the reduction or elimination of the risk of damage to the bag 1 + P filled with the fluid dose When inserted into a magazine, the gripping zone 13 and the overlying region 18 extend peripherally along a portion of the peripheral edge 3 over a sufficient peripheral length and extend in the orthogonal direction over a width sufficient. By "length" and "width" is meant a certain distance. The term "length" has been retained in relation to the distance along the peripheral edge 3 and the term "width" has been retained in relation to the distance in the direction orthogonal to the previous one, for the reason that most often the first distance mentioned is greater than the second distance mentioned. This provision may not be limiting.

In general, said length is at least one third of that of the peripheral edge 3, in particular of the order of one-half or at least half the length of the peripheral edge 3. On its side, the said width is at least a quarter of the length of the bag 1 + P in the same orthogonal direction, in particular of the order of one third or at least one third of the length of the bag 1 + P in the same orthogonal direction. These values may not be limiting.

In an embodiment where the edge 3 of the bag 1 + P has a size of the order of a few centimeters, as previously indicated, the gripping zone 13 and the oversize region 18 may have a length of the order of a few centimeters and a width of the order of one centimeter, which ensures a good grip by the fingers. These values may not be limiting.

In the embodiment shown, the gripping zone 13 and the overlying region 18 extend peripherally outwardly over only a fraction of the peripheral edge 3 and they are in several distinct, spaced sections, here two diametrically opposite sections.

In other embodiments, the gripping zone 13 and / or the overlying region 18 extends peripherally outwardly over all, or substantially all, of the peripheral edge 3. Either they are in a single section or several distinct but contiguous sections.

In the embodiment shown, the gripping zone 13 and / or the oversize region 18 has a limit 19 in the interior of which the shape defines as a whole a line or a surface of folding and opening of the two parts of the zone. gripping 13 and / or the oversize region 18. This limit 19 is defined in particular by the inner edges 19a and 19b or the vicinity of the inner edges 19a, 19b, between the inner edges 19a, 19b and the outer edge 8b.

The use and implementation of a 1 + P bag as just described in its various embodiments is illustrated by Figures 4, 4A and 4B which are now referred to. Figure 4 illustrates the bag 1 + P in its embodiment where it comprises two folded shutters with securing, 18a and 18b, filled, in the closed state and in a configuration where it is generally flat. The two flaps 18a and 18b are then one against the other and extend parallel to the plane Q, the bag 1 + P being itself flat. As discussed, the overall thickness H in the oversize region 18 is either just a little less than or better than or equal to the thickness h in the region of the cavity 14, with the effects and benefits previously described.

To open the sachet 1 + P and access the dose of fluid product, the user grasps the two folded flaps 18a and 18b of one of the pairs or two pairs of folded flaps 18a, 18b, and with the fingers diagrammatically by the references D, spreads them towards the edge 3, more precisely here the small side 6, by rotating them around the limit 19, respectively the edges 19a, 19b or towards the edges 19a, 19b. This movement of separation is shown schematically in Figure 4A by the arrows F In this step, the spacing between the folded flaps 18a and 18b is not yet sufficient to have an effect on the fastening in the securing sector 8 near.

The user continues its action and continues to move the folded flaps 18a, 18b, the spacing movement being shown schematically in Figure 4B by the arrows F _Σ . In this step, the spacing between the folded flaps 18a and 18b has the effect of breaking the bonding in the securing sector 8 close, then little by little, in most or all of the sector 18. Thus, the The user opens the bag 1 + P and accesses the cavity 14 and the dose of fluid product P that he can use as he sees fit.

The process for manufacturing a filled sachet 1 + P is preferably carried out continuously. It is derived from the process for manufacturing a succession of sachets of the type containing a dose of a fluid product. The method comprises two variants of implementation according to whether one disposes at the beginning of a single continuous band 21 of layer-shaped material or that one has two continuous strips 21a and 21b of material in the form of a layer, the material of the strip or strips 21, 21a and 21b being intended for the production of the first part 4a and the second part 4b of the bag 1. The strip of material 21 or the two strips of material 21a and 21b are, originally, wound respectively on a reel 22 or two reels 22a and 22b from which they are or are taken (s) unwinding for the manufacture of 1 + P bag.

Typically, the coil (s) 22, 22a and 22b are arranged with their horizontal axis (s) and are (are) placed in the upper position. In both embodiments, by means of this single band 21 or by means of these two strips 21a and 21b, a strip of first part 23a and a strip of second part 23b are produced. If we have a single band 21, we proceed to a longitudinal slot operation so as to constitute the two strips 23a and 23b. If two bands 21a and 21b are available, these are the two bands 23a and 23b.

The first variant embodiment is illustrated by FIG. 5 and the second variant embodiment by FIG. 6. With the first variant embodiment, it is possible to have a first part strip 23a and a first part 4a and a strip of second portion 23b and a second portion 4b, respectively, which are different in material and / or thickness. With the second variant embodiment, the first part band 23a and the first part 4a and the second part band 23b and the second part 4b, respectively, are identical as to the material and the thickness. With the embodiment of bag 1 + P or 1 shown, the two strips 23a and 23b are likewise thin.

The first portion band 23a is bounded by two longitudinal edges 19aa and 19ab and the second portion band 23b is bounded by two longitudinal peripheral edges 19ba and 19bb. These edges are intended to constitute the inner edges 19a and 19b, respectively of the 1 + P bag.

In both embodiments, the first part band 23a and the second part band 23b, typically vertically and downwards, parallel to one direction, are driven in synchronism by means of synchronous drive means adapted accordingly. vertical drive termed "longitudinal". This scroll is illustrated in Figures 5 and 6 by the arrows De-ι. The term "longitudinal" used for the description of the process corresponds to the term "longitudinal" used for the description of the sachet 1 or 1 + P.

Then, a longitudinal layer portion of at least one of the first portion band 23a and the second portion band 23b is folded on itself, at least from a corresponding longitudinal peripheral edge 19aa. , 19ab, 19ba and 19bb, of the longitudinally moving band, as indicated. Thus, at least one longitudinal edge is provided on at least one folded flap 18a, 18b so as to form at least one oversize region 16.

With reference to the embodiment of bag 1 or 1 + P shown, the two longitudinal layer portions of both the first portion strip 23a and the second portion strip 23b are folded from the four longitudinal peripheral edges 19aa, 19ab. , 19ba and 19bb, which allows for the first part band 23a and for the second part band 23b, respectively two opposite flaps vis-à-vis. This folding can be performed while the strip 23a, 23b is scrolling, by means of one or more deflection bars or in any other similar manner. This folding is illustrated in Figures 5 and 6 by the arrows Pl.

While the first part band 23a and the second part band 23b are located facing each other and in contact with each other towards their longitudinal peripheral edges 19aa, 19ab, 19ba and 19bb, to each operation of a succession of similar operations, is inserted between the first part band 23a and the second part band 23b the dose of fluid product P to bag (dose of fluid product without intermediate support or support impregnated with the dose of the fluid product) and the first portion band 23a and the second portion band 23b are secured in an annular sector 8 so as to form a cavity 14, each successive dose of fluid product P being received in each successive cavity 14 . This insertion of dose and this bonding can be achieved by means of dose insertion and joining devices known or within the reach of those skilled in the art. This dose insertion and this connection are illustrated in FIGS. 5 and 6 by arrows In and So-i.

Then, the folded flap 18a, 18b of the band of first part 23a and / or of the band of second part 23b is secured longitudinally on itself, and this in the case where the flaps 18a, 18b are folded with solidarity. . This attachment can be achieved by means of a known fastening device or within the reach of the skilled person. This joining is illustrated in FIGS. 5 and 6 by the arrows S0 ₂ .

Then, at least transversely, the band of the first part 23a and the band of the second part 23b, thus secured, are cut out between the successive cavities 14 filled with the doses of product P, so that at each operation a succession of Analogous operations, a sachet 1 containing a dose of a fluid product P is separated. This cutting can be carried out by means of a known cutting device or within the abilities of those skilled in the art. This cut is illustrated in FIGS. 5 and 6 by the arrows De ₂ .

Claims

1. Sachet (1) adapted and intended to contain a dose of a fluid product (P), comprising a first portion (4a) in the form of a sealing layer portion of a certain flexibility and a second portion (4b) ) in the form of a sealing layer portion of a certain flexibility, the first part (4a) and the second part (4b) being arranged opposite so that the bag (1) comprises:

an annular mutual securing sector (8) sealed and removable by an appropriate opening action of the first part (4a) and the second part (4b) in a sector of mutual contact of their two inner surfaces (9a, 9b) ,

a gripping zone (13) which, towards the outside, is adjacent to the peripheral edge (3) of the bag (1) and which, inwards, is adjacent to the securing sector (8), in which the first part (4a) and the second part (4b) are not mutually interconnected so as to provide a tongue-like gripping means for opening the bag (1),

a fluid-tight cavity (14) bounded by the securing sector (8) and by the two non-mutually secured sectors (15a, 15b) of the internal surfaces (9a, 9b) facing the first part (4a) and the second part (4b) that it limits, able to receive the dose of fluid product (P) to bag,

characterized in that in at least a portion of said gripping zone (13), the layer portion of at least one of the first portion (4a) and the second portion (4b) is folded over it. even at least from the peripheral edge (3) into a folded flap (18a, 18b) so as to form an overlying region (18) of thickness at least twice the thickness of the portion of the layer of this portion (4a, 4b), the bag (1) thus having in the over-thickened region (18) an extra thickness which at least partially compensates, or equalizes, or exceeds the extra thickness in the region of the cavity (14), due to the presence the dose of fluid product (P) therein, so as to reduce or eliminate the risk of damage to the sachet (1) filled with the dose of fluid product (P) when inserted into a magazine.

2. Bag (1) according to claim 1, characterized in that the folded flap (18a, 18b) of the first and / or second portion (4b) is also secured to itself, forming a folded flap ( 18a, 18b).

3. Bag (1) according to any one of claims 1 and 2, characterized in that the folded flap (18a, 18b) of the first portion (4a) and / or the second portion (4b) extends in the longitudinal direction to the vicinity of the annular securing sector (8).

4. Bag (1) according to claim 3, characterized in that a portion (20) of the folded flap (18a, 18b) of the first portion (4a) and / or the second portion (4b) extends in the longitudinal direction by being adjacent to a portion (12) of the annular securing sector (8) forming its rupture primer.

5. Bag (1) according to claim 4, characterized in that said portion (20) of the folded flap (18a, 18b) is located centrally on said folded flap (18a, 18b), and / or said part ( 12) of the annular securing sector (8) is located centrally on a segment (1 1) of said annular securing sector (8).

6. Bag (1) according to any one of claims 1 to 5, characterized in that the folded flap (18a, 18b) of at least one of the first part (4a) and the second part ( 4b) is in all, or substantially all, the gripping zone (13), the gripping zone (13) being merged or substantially merged with the oversize region (18).

7. Sachet (1) according to any one of claims 1 to 6, characterized in that the gripping zone (13) and / or the over-thickened region (18) extends peripherally along a portion of the edge (3) peripheral over a certain length and extends in the orthogonal direction over a certain width, the length and the width being sufficient to allow on the one hand the grip for the opening of the bag (1) and on the other hand, reducing or eliminating the risk of damage to the sachet (1) filled with the dose of fluid product (P) when it is inserted into a magazine.

8. Bag (1) according to claim 7, characterized in that said length is at least one third of the length of the peripheral edge (3), in particular of the order of half or at least half the length peripheral edge (3); and / or said width is at least a quarter of the length of the bag (1) in the same orthogonal direction, in particular on the order of one third or at least one third of the length of the bag (1) in the same direction orthogonal.

9. Sachet (1) according to any one of claims 1 to 8, characterized in that the gripping zone (13) and / or the over-thickened region (18) extends peripherally outwards or on the whole , or substantially all, only a fraction of the peripheral edge (3) of the bag (1); and / or the gripping zone (13) and / or the overlying region (18) is either in a single section or in several distinct, contiguous or spaced sections, in particular in two diametrically opposite sections facing each other on the sachet (1).

10. Bag (1) according to any one of claims 1 to 9, characterized in that the gripping zone (13) and / or the thickened region (18) has a limit (19, 19a, 19b) whose shape as a whole defines a line or a surface of folding and opening of the two parts of the gripping zone (13) and / or the over-thickened region (18).

1 1. Bag (1) according to any one of claims 1 to 10, characterized in that in at least part of the gripping zone (13), the folded flap (18a) of the first part (4a) and the folded flap (18b) of the second portion (4b) are located in line with one and the same overlying region (18), of thickness at least equal to twice the thickness of the layer portion of the first portion ( 4a) plus twice the thickness of the layer portion of the second portion (4b).

12. Bag (1) according to claim 1 1, characterized in that the folded flap (18a) of the first portion (4a) folded and the folded flap (18b) of the second portion (4b) are located opposite the one of the other.

13. Sachet (1) according to any one of claims 1 to 12, characterized in that it is limited on both sides by two outer faces (4aa, 4ba) substantially flat or without noticeable relief aesthetically.

14. Bag (1) according to any one of claims 1 to 13, characterized in that the first portion (4a) and the second portion (4b) and the bag (1) as a whole have a certain flexibility and a overall outfit, especially flat.

15. Bag (1) according to any one of claims 1 to 14, characterized in that the layer of the first portion (4a) and / or the layer of the second portion (4b) has a thickness of the order 1/10 ^th of a millimeter.

16. Bag (1) according to any one of claims 1 to 15, characterized in that the layer of the first portion (4a) and the layer of the second portion (4b) are identical or different in the material and / or the thickness.

17. Bag (1) according to any one of claims 1 to 16, characterized in that its peripheral edge (3) corresponds to the two coincident peripheral edges (3a, 3b) of the first portion (4a) in the form of portion of the layer and the second portion (4b) in the form of a portion of a layer, and in particular that its peripheral edge (3) has a contour of general shape, or which is in a general, polygonal shape, such as a square or rectangular shape.

18. Bag (1) according to claim 1, characterized in that the layer portion of the first portion (4a) and the layer portion of the second portion (4b) are folded and secured to themselves facing the one of the other, in all, or substantially all, the gripping zone (13), in two folded folds with solidarization (18a, 18b) forming an oversize region (18), of thickness equal to twice the thickness of the layer portion of the first portion (4a) plus twice the thickness of the layer portion of the second portion (4b), the two integrally folded flaps (18a, 18b) extending longitudinally in the vicinity of a rupture primer (12) of the annular securing sector (8), the gripping zone (13) and the overlying region (18) extending peripherally over a certain length of the peripheral edge (3) of the bag (1), the bag (1) being limited on both sides by two outer faces (4aa, 4ba) substantially flat or without noticeable relief aesthetically and having a peripheral edge (3) corresponding to two peripheral edges (3a, 3b) in coincidence of the first portion (4a) and the second portion (4b).

19. Bag (1) containing a dose of a fluid product (P), characterized in that it comprises a sachet (1) according to any one of claims 1 to 18 and a dose of fluid product (P) received in the cavity (14) of the bag (1).

20. Bag (1) containing a dose of a fluid product (P) according to claim 19, characterized in that the dose of fluid product (P) is received in the cavity (14) of the bag (1), without intermediate support.

21. Bag (1) containing a dose of a fluid product (P) according to claim 19, characterized in that the dose of fluid product (P) impregnates a support, said support thus impregnated with fluid product being received in the cavity (14) of the bag (1).

22. Bag (1) containing a dose of a fluid product (P) according to any one of claims 19 to 21, characterized in that its thickness in the over-thickened region (18) at least partially compensates, or equalizes , or exceeds the thickness in the region of the cavity (14) where the dose of fluid product (P) is and in that it is limited on both sides by two external faces (4aa, 4ba) substantially flat or without noticeable relief aesthetically.

23. A method of manufacturing a succession of sachets (1) of the type containing a dose of a fluid product (P) according to any one of claims 19 to 22, characterized in that:

one or two strips (21, 21 a, 21 b) of layer material are provided,

fluid is available (P),

characterized in that, successively:

the strip (s) (21, 21a, 21b) of layer-shaped material is unwound so as to form a continuous layer-like first web portion (23a) and a second web portion (23b) continues in shape layer and synchronously drives the first-part band (23a) and the second-part band (23b),

a longitudinal layer portion of at least one of the first part band (23a) and the second part band (23b) is folded on itself, at least from the longitudinal peripheral edge in scrolling of this strip, in a folded flap (18a, 18b), so as to form a thickened region (18) longitudinal, adjacent to the longitudinal peripheral edge of this strip,

while the first part band (23a) and the second part band (23b) are located facing each other and in contact with each other towards their longitudinal peripheral edges, at each A succession of similar operations is inserted between the band of the first part (23a) and the second part band (23b) the dose of fluid product (P) bagging and one secures the first part band (23a) and the second portion band (23b) in an annular sector (8) so as to form a cavity (14), each successive dose of fluid product (P) being received in each successive cavity (14),

the folded flap (18a, 18b) of the first part band (23a) and / or the second part band (23b) is secured longitudinally on itself,

at least transversely, the band of the first part (23a) and the band of second part (23b), thus secured, are cut out between the successive cavities (14) filled with the doses of fluid product (P), so that each operation of a succession of similar operations, one separates a sachet (1 + P) containing a dose of a fluid product.

24. The method as claimed in claim 23, characterized in that either a single strip (21) of layer-shaped material is provided and from said strip a first-part strip (23a) is formed. and a second-portion band (23b), that is, two strips of material (21a, 21b) are provided, and thus a first-part band (23a) and a second-band are provided. part (23b).