EP0803210A1 - Packaging pouch for a cream or paste like product; manufacturing process therefor and a make-up case containing such a product - Google Patents

Abstract

The packaging pocket for a cosmetic paste comprises front (3) and rear (2) sheets assembled along a sealing line (S) to contain a thin layer of the paste. The flexible front transparent plastics sheet has several small diameter perforations (6) permeable to the paste. The flexibility of the front sheet is such that it can be pressed against the rear cardboard sheet by the user's finger enabling withdrawal of the paste and complete emptying of the pocket.

Description

The present invention relates to the packaging of a product of creamy to pasty consistency, in particular a cosmetic product such as a foundation.

Known pasty compositions are used for makeup, requiring for their extrusion, due to their high viscosity, large diameter dies.

It is known to package these pasty compositions in pots or recesses in a housing, the opening for introducing the product being large enough to allow filling at high speed by the extrusion die.

The subject of the invention is a new type of packaging for a product of creamy to pasty consistency.

More particularly, the invention aims to provide a pouch for packaging a product of creamy to pasty consistency, characterized in that it comprises at least one front sheet and one back sheet assembled so as to contain said product in the form of a thin layer spread between said sheets, the front sheet at least being flexible and further having a region permeable to said product, the flexibility of the front sheet being chosen so that it can be pressed against the back sheet at using a finger or an applicator to allow the user to take the product on the one hand and on the other hand to ensure the complete emptying of the bag.

The permeability to the product of the front sheet through which the distribution of the product takes place, can be obtained by means of multiple perforations of the sheet or by the production of this sheet in a porous woven or nonwoven or spongy or sintered material. .

It is also possible to produce said permeable zone by superimposing a perforated film and a film of a porous woven or nonwoven or spongy or sintered material.

The user can withdraw the product contained in the pocket by passing his finger over the front sheet, or by means of an applicator.

The front sheet being made of a flexible material, it gives the user an impression of softness to the touch.

In addition, the user can by pressing the front sheet against the back sheet, which is rigid, semi-rigid or flexible but then rests on a rigid surface, take just the amount of product required, which is not always the case. case when packaging the product in a jar and the product is either very adherent or weakly adherent.

Indeed, in the first case, the product tends to adhere as a whole to the finger of the user who wants to take it so that it is difficult to extract from the pot a small amount of product only.

When, on the contrary, the product is weakly adherent and tends to form agglomerates without sticking to the user's finger, it is difficult to remove the product properly.

Thanks to the invention, it is possible to package a product of creamy to pasty consistency, very adherent or weakly adherent, without encountering the drawbacks of packaging in pots.

Thus, the invention offers the possibility of packaging a very wide range of products.

In a particular embodiment of the invention, the front and rear sheets are substantially flat and assembled one on the other so that after the complete emptying of the pocket, the latter is flat and said sheets are in contact with each other over most of their surface.

Advantageously, the permeable product sheet is covered with a removable peelable film to prevent the product from leaving and guarantee that it is kept in the air until the first use.

In a particular embodiment of the invention, the front sheet, permeable to the product, is covered with an openwork cover in its center.

Advantageously, this cover is constituted by a rigid frame.

The pouch can advantageously be used as a refill in a case for makeup.

The invention thus also relates to a case for makeup, comprising a receptacle having a bottom, and housing a pocket as mentioned above, the back sheet resting on said bottom.

According to a particular embodiment of said housing, the bottom of said receptacle is rigid and the back sheet of the pocket is flexible and rests on said bottom.

According to another particular embodiment of said housing, said receptacle is constituted by a drawer allowing, when it is extracted from the housing, the introduction or replacement of the pocket.

The invention also relates to a method for manufacturing a pouch for packaging a product of creamy to pasty consistency, and more particularly a very viscous product.

• former un sandwich d'une masse de produit étalée entre deux feuilles dont l'une au moins est souple et dont l'une est perméable audit produit ou susceptible de l'être,
• comprimer selon au moins une ligne de fermeture ledit sandwich pour rapprocher lesdites feuilles, et
• sceller ces dernières selon la ou lesdites lignes de fermeture.

This process includes the steps of:

• forming a sandwich of a mass of product spread between two sheets, at least one of which is flexible and one of which is permeable to said product or capable of being,
• compressing said sandwich along at least one closing line to bring said sheets together, and
• seal these according to the said closure line (s).

Advantageously, the mass of product is spread by pressing the sheets against each other.

In a particular embodiment, the pocket comprises a sheet which is perforated at least in its central region and covered on its perforated region with a removable film.

The mass of product can be deposited on one of the sheets and then covered by the other sheet.

As a variant, the two sheets are preassembled to form a sheath, allowing the introduction of a filling spout for product of large diameter.

Advantageously, the sheets are preassembled so as to form a funnel outside of said sheath, facilitating the introduction of said filling spout.

After filling the sheath, the insertion side of the filling spout is closed and the funnel is detached by cutting to form said pocket.

• la figure 1 est une vue schématique en perspective avec arrachement partiel d'une poche de conditionnement conforme à un exemple de réalisation de l'invention,
• la figure 2 est une vue schématique selon le trait de coupe II-II de la figure 1,
• les figures 3 à 7 illustrent différentes étapes d'un premier procédé pour réaliser une poche de conditionnement selon l'invention,
• la figure 8 est une vue schématique en perspective d'un fourreau utilisé dans un deuxième exemple de procédé, pour réaliser une poche de conditionnement selon l'invention,
• la figure 9 est une vue en élévation frontale selon la flèche IX de la figure 8,
• les figures 10 et 11 sont des vues en élévation frontale respectivement pendant et après le remplissage du fourreau,
• la figure 12 est une vue schématique en perspective illustrant l'étalement de la masse de produit à l'intérieur du fourreau,
• les figures 13, 14 et 15 sont des vues en élévation frontale illustrant respectivement le fourreau à la fin de l'étalement de la masse de produit, après fermeture et après découpe de la partie supérieure formant entonnoir,
• la figure 16 est une vue schématique en perspective d'une poche de conditionnement selon une variante de réalisation,
• la figure 17 est une coupe schématique selon le trait de coupe XVII-XVII de la figure 16,
• la figure 18 est une coupe schématique d'une poche de conditionnement selon une variante de réalisation de l'invention,
• la figure 19 est une vue schématique en perspective d'un boîtier pour le maquillage, contenant une poche de conditionnement conforme à un exemple de réalisation de l'invention, et
• la figure 20 est une coupe dans un plan médian du boîtier représenté sur la figure 19, refermé.

Other characteristics and advantages of the present invention will appear on reading the detailed description which follows, of nonlimiting exemplary embodiments of the invention, and in view of the appended drawing in which:

• FIG. 1 is a schematic perspective view with partial cutaway of a packaging pouch according to an exemplary embodiment of the invention,
• FIG. 2 is a schematic view along the section line II-II of FIG. 1,
• FIGS. 3 to 7 illustrate different stages of a first method for producing a packaging bag according to the invention,
• FIG. 8 is a schematic perspective view of a sheath used in a second example of a method for producing a packaging bag according to the invention,
• FIG. 9 is a front elevation view along arrow IX in FIG. 8,
• FIGS. 10 and 11 are views in front elevation respectively during and after the filling of the sheath,
• FIG. 12 is a schematic perspective view illustrating the spreading of the mass of product inside the sheath,
• FIGS. 13, 14 and 15 are views in front elevation respectively illustrating the sheath at the end of the spreading of the mass of product, after closing and after cutting of the upper part forming a funnel,
• FIG. 16 is a schematic perspective view of a packaging bag according to an alternative embodiment,
• FIG. 17 is a diagrammatic section along the section line XVII-XVII of FIG. 16,
• FIG. 18 is a schematic section of a packaging bag according to an alternative embodiment of the invention,
• FIG. 19 is a schematic perspective view of a make-up case, containing a packaging bag according to an exemplary embodiment of the invention, and
• Figure 20 is a section in a median plane of the housing shown in Figure 19, closed.

There is shown in Figure 1 a packaging bag 1 according to a first embodiment of the invention.

This pocket 1 presented in the example describes a rectangular outline and upper and lower faces generally convex towards the outside.

The pocket 1 is formed in the example described by the assembly of two independent sheets 2, 3 flexible, along a sealing line S extending along the edge of the four sides of the pocket over a width e.

The upper sheet 3, which is intended to face the user during the use of the pocket, is called the front sheet hereinafter, and the lower sheet 2, which rests on a flat or slightly curved surface during the usage, is called backsheet.

Alternatively, the pocket can be formed from a flexible strip folded on itself, in which case the two sheets are linked together by one side before being assembled along the three remaining sides.

In another variant, the pocket can be formed by assembling a flexible sheet on a relatively rigid sheet, such as a sheet of plasticized cardboard or a thin plate of rigid plastic.

The bag 1 contains a mass of a product of creamy to pasty consistency 4 and the front sheet 3 has a central region permeable to this product.

Advantageously, the front sheet 3 at least is transparent to allow the user to see the product contained inside the pocket.

In the example described, the front sheet 3 is perforated in its central region in the manner of a sieve to allow the distribution of the product through multiple perforations 6 of small diameter. Until the first use, this perforated region is externally covered with a removable sealing film 5, constituted for example by an adhesive film.

The front sheet 3 can be perforated over its entire surface or only in its central region.

Advantageously, it is possible to attach to the front sheet 3 a perforated cover in its center, intended to mask the zone of assembly of the sheets 2 and 3, which can also be used to precisely delimit the zone for dispensing the product and to support the removable film 5 .

Such a cover can be produced in the form of a relatively rigid frame as will be described below.

The flexibility of the front sheet 3 ensures complete emptying of the packaging bag through the perforations of the front sheet 3 when the sheets 2,3 are pressed against each other, the back sheet 2 resting if it is flexible on a rigid surface such as the bottom of a receptacle, as will be explained below.

The sheet 3 can advantageously be shaped so as to take at rest a slightly domed shape towards the outside and detach from the mass of product contained inside the pocket.

The product is in the form of a thin layer between the sheets 2,3.

The thickness of the product is substantially constant or slightly greater at the center of the pocket, being preferably between 1 and 6 mm, and more preferably between 2 and 4 mm.

Thus, the product thickness is for example 0.5 mm in the vicinity of the periphery and it is between 2 and 4 mm in the vicinity of the center of the pocket.

The thickness of the sheet 3, permeable to the product, is between 5 μm and 1 mm, preferably between 40 μm and 500 μm, and more preferably, between 100 μm and 300 μm.

The sheets 2,3 can be made of the same material or of different materials.

The packaging bag 1 can thus be made of polyethylene (PE), polyvinyl chloride, polyethylene terephthalate (PET), or a PE / PET copolymer, without limitation.

It is also possible to produce the packaging pouch 1 using sheets each consisting for example of a polyethylene terephthalate and aluminum laminate or a polyethylene terephthalate and polyethylene laminate.

The use of multilayer films to make the bag can prove useful in preventing the escape of certain constituents of the packaged product towards the outside, through the walls of the bag, in the absence of use.

The region permeable to the product can be produced as in the example represented in FIGS. 1 and 2 by simple perforations of the upper sheet 3, the diameter and the number of these perforations being chosen as a function of the nature of the product to be packaged and to distribute and conditions of use of the bag.

Alternatively, one can use to form the upper sheet 3 a material intrinsically permeable to the product to be packaged and dispensed, such as a woven or nonwoven or spongy material.

In another variant, shown in FIG. 18, it is possible to use, to constitute the region permeable to the product, a superposition of a perforated film 3 capable of allowing the product to pass through the perforations and of a porous film 3 "of material woven or non-woven or spongy, extending opposite said perforations and intended for example to ensure a more homogeneous distribution of the product or to modify the feel to the touch. This porous film 3 "can extend over the entire surface of the perforated film or only on the perforated region of the latter.

FIGS. 3 to 7 illustrate different stages of a first method for producing the packaging bag 1.

Is deposited, as illustrated in Figures 3 and 4, in the center of the upper face of the backsheet 2, the mass of product 4 leaving a wide spout extrusion die, not shown.

The front sheet 3 provided with its removable film 5 is then attached to the mass of product 4 as shown in Figure 5, being chosen large enough to cover it.

Then, as illustrated in FIG. 6, the front sheet 3 is pressed against the back sheet 2 resting on a rigid flat surface to spread the mass of product 4 and to form a sandwich of a thin layer of dough spread between the sheets 2 and 3.

After spreading, a mass of product 4 of substantially uniform thickness is obtained over the entire internal surface of the sheets 2 and 3, as illustrated in FIG. 7.

The sheets 2 and 3 are then pressed on their periphery one against the other from their free edge over a width e and the regions of the sheets thus brought together are sealed on four sides through a residual thickness of product, by any techniques known per se, to form the bag 1.

As sealing means which can be used, mention may, for example, be made of ultrasonic or high-frequency welding.

The protective film 5 makes it possible to seal the bag 1 hermetically when not in use.

After removal of the latter, the user can withdraw product through the perforations 6 of the front sheet 3.

We will now describe a second example of a method for producing the packaging bag 1, with reference to FIGS. 8 to 15.

We start from a sheath 12 open at its upper end 13.

This sheath 12 is made of a flexible plastic material, such as that used to manufacture the sheets 2 and 3 of the previous embodiment example.

The sleeve 12 is obtained by bringing face to face two sheets 14 and 15 of the same shape and by welding them at their periphery on only three sides.

Alternatively, the sleeve 12 can be formed by folding a single flexible strip over itself, in which case it is sufficient to weld only two sides.

The sleeve 12 has perforations and a removable film on a main face, which have not been shown for the sake of clarity of the drawing.

The sheath 12 is rectangular at its lower part and widens at its upper open end to form a funnel 16 intended to facilitate the introduction inside the sheath of a product filling spout.

The assembly lines S of sheets 14 and 15 have been indicated by dotted lines.

There is shown in elevation in Figure 9 the sleeve 12 before filling, which is carried out by means of a spout 17 of large diameter, introduced by the upper end 13, to deliver downwards through an orifice 19 to the inside the sheath the mass of product 4. The orifice 19 is located, during the distribution, approximately halfway up the parallel sides 20 of the lower part of the sheath 12.

FIG. 11 shows the sleeve 12 after removal of the filling spout 17.

The mass of product 4 is then spread out by pressing the two main faces of the sheath 12 against each other, as illustrated in FIG. 12.

Spreading the mass of product 4 brings it up to the base of the funnel 16, therefore above the upper end of the sides 20 of the lower part of the sheath, as shown in FIG. 13.

The sheath 12 is then sealed after bringing sheets 14 and 15 together along a closure line connecting the upper ends of the sides 20, through a residual thickness of product, as illustrated in FIG. 14.

The sheath 12 is then cut along a cutting line parallel to the last sealed side, to separate the funnel 16 from the lower part of the sheath which then forms a packaging pouch identical to the pouch 1 previously described, although filled differently.

We can report on the two sheets assembled to contain the product a cover as mentioned above.

FIGS. 16 and 17 show a pocket 1 'comprising a rear sheet 3', a perforated front sheet 8 ', a cover 9' and a removable protective film 5 'provided with a gripping tab 7'.

The sheets 3 'and 8' are assembled to contain the product 4. The cover 9 'is perforated in its center to allow the user to withdraw the product by passing his finger or an applicator over the sheet before 8' after removal of the removable film 5 '. The latter is fixed to its periphery on the face external cover 9 '. The front sheet 8 'is traversed by perforations regularly distributed over its entire surface.

The cover 9 'can be welded to the front sheet 8' during assembly of the latter with the back sheet 3 ', and it can be made of a relatively rigid and opaque plastic material, so as to facilitate handling of the pocket and give it a pleasant aesthetic appearance. In a variant not shown, one can use to hold and hide the flexible sheets around their periphery two elements forming a relatively rigid plastic frame, superimposed and assembled as if to retain the film section of a slide. Before their assembly, the two elements can be independent or connected by a film hinge and only one of the elements can be perforated to allow the user to take the product.

The bag 1 or 1 ′ can advantageously be used in a makeup accessory 25 as shown diagrammatically in perspective in FIG. 19.

The accessory 25 comprises a box 26 provided with a pivoting cover 27 which can house a mirror 28 at its bottom.

The body of the housing 26 houses a sliding drawer 29, the bottom 33 of which is rigid and which can be pulled out to receive the pocket 1 or 1 ', the size of which is suitable.

The pocket 1 or 1 ′ is retained in the body of the housing 26 once the drawer 29 in place by a frame 30 defining an access 31 to the upper face of the pocket.

The product is removed using a finger or an applicator 32, brought into contact with the permeable region of the sheet before 3 after removal of the protective film 5.

Advantageously, as shown in Figure 20, the applicator 32 is housed in the accessory 25 in the absence of use between the frame 30 and the cover 27 folded over the body of the housing.

The flexibility of the front sheet permeable to the product ensures complete emptying of the pocket by applying it against the back sheet; the two sheets are then in contact with each other over most of their surface.

The invention thus allows the packaging of an expensive product without loss of product for the user.

Of course, the invention is not limited to the exemplary embodiments which have just been described.

One can in particular modify the geometry of the pocket and adopt a shape not rectangular but circular for example.

Furthermore, the pocket can be received not in a sliding drawer but in a simple slot in the case of a makeup accessory similar to that described above.

The pocket can also be used as a sample to insert in magazines or to send by mail, allowing to test the product contained inside.

Claims (20)

Pouch for packaging a pasty product, in particular a cosmetic product, characterized in that it comprises at least one front sheet (3; 8 '; 15) and one back sheet (2; 3'; 14) assembled so containing said product in the form of a thin layer spread between said sheets, the front sheet at least being flexible and further having a region permeable to said product, the flexibility of the front sheet (3) being chosen so that 'it can be pressed against the back sheet (2) by means of a finger or an applicator on the one hand to allow the user to take the product and on the other hand to ensure the complete emptying of the pocket. Pocket according to claim 1, characterized in that said front and rear sheets are substantially flat and assembled one on the other so that after the complete emptying of the pocket, the latter is flat and said sheets are in contact with each other over a major part of their surface. Packaging pouch according to claim 1 or 2, characterized in that the back sheet consists of a sheet of plasticized cardboard or a thin plate of rigid plastic. Packaging bag according to any one of claims 1 to 3, characterized in that the front sheet is made of a transparent plastic material. Packaging bag according to any one of claims 1 to 4, characterized in that the front sheet is formed by the superposition of a porous film and a perforated film. Packaging bag according to any one of claims 1 to 5, characterized in that the front sheet is covered with a cover (9 ') perforated in its center. Packaging bag according to claim 6, characterized in that said cover (9 ') is constituted by a rigid frame. Packaging bag according to claim 7, characterized in that the region permeable to the product is covered before the use of the pocket by a removable protective film (5 ') fixed on said cover (9'). Packaging bag according to any one of claims 1 to 8, characterized in that it comprises in said product-permeable zone multiple small diameter perforations (6). Packaging bag according to any one of claims 1 to 9, characterized in that it comprises in said product-permeable zone a woven or non-woven or spongy or sintered material. Packaging bag according to any one of claims 1 to 10, characterized in that the sheet having said zone permeable to the product is shaped to take at rest a curved shape outwards. Method for manufacturing a bag intended to contain a product of creamy to pasty consistency, in particular a cosmetic product, characterized in that it comprises the steps consisting in: - forming a sandwich of a mass of product spread (4) between two sheets (2,3; 14,15) of which at least one is flexible and one is permeable to said product or capable of being so, compressing said sandwich along at least one closing line (S) in order to bring said sheets together, and - seal these according to the said closure line (s). Method according to claim 12, characterized in that the said mass of product (4) is spread by pressing the sheets (2,3; 14,15) one against the other. Method according to one of claims 12 and 13, characterized in that said mass of product (4) is deposited on one of the sheets (2) serving as a support and then covered with the other sheet. Method according to one of claims 12 and 13, characterized in that the two sheets are preassembled to form a sheath (12) allowing the introduction of a product filling spout (17). Method according to claim 15, characterized in that the sheets are pre-assembled so as to form a funnel (16) facilitating the introduction of said filling spout, then the sheath (12) is sealed at the insertion side of the spout filling and the funnel is detached by cutting to form the pocket (1). Method according to any one of claims 12 to 16, characterized in that the two sheets are obtained by folding a strip of material on itself. Case for make-up (25), comprising a receptacle having a bottom, characterized in that said receptacle houses a packaging pouch as defined in any one of claims 1 to 11, the back sheet resting on said bottom. Case for make-up (25), comprising a receptacle with a rigid bottom, characterized in that the said receptacle houses a packaging pouch as defined in claim 1, the back sheet being flexible and resting on the said rigid bottom. Housing according to claim 18 or 19, characterized in that said receptacle is formed by a drawer (29) allowing, when it is removed from the housing, the introduction or replacement of the pocket.

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