EP0617904A1 - Dispensing package for a pasty, stick-like product with an external, fixed decorating sleeve - Google Patents

Abstract

The present invention relates to a dispensing package for pasty, stick-like products. This package, which is essentially made from synthetic material, includes a hollow body (2) inside which the pasty stick is guided in a longitudinal direction (X-X'), a device (6) for displacing the stick, consisting of a sliding piston to which the stick is secured and of a screw capable of displacing the piston, a thumb (knurled) wheel (7) for driving the screw (62) in rotation, mounted at one end (27) of the body (2) opposite a cap (5) for closing this body, and is characterised in that the body comprises, on the one hand, an internal lining (3) which defines the two longitudinal ends (825, 27) of the body and which is produced in an elastically deformable material compatible with the pasty product, as well as an external sleeve (4) which partially surrounds the said lining and which is assembled therewith with the aid of means formed together (in a single piece) with it (431, 433, 437). This package makes it possible, for example, to package hygiene (health) or cosmetic products, such as deodorant or, for example, lipstick. <IMAGE>

Description

The present invention relates to a dispenser packaging for a pasty product in the form of a stick, with a barrel or fixed external sleeve for decorating the body.

Various types of dispenser packaging have been known for a long time for pasty products in the form of sticks, such as cosmetic, adhesive or similar products. For a long time, these packages have essentially been made of plastic or synthetic material.

Nowadays, it is frequent that such a dispenser packaging comprises a hollow body inside which the pasty stick is guided in a longitudinal direction, between a retracted position and a position of use projecting from a first end of the body. There is provided inside the body a device for moving the rod, which is constituted by a sliding piston of which the rod is secured, and by a screw capable of cooperating with the piston to move it (and therefore move the rod) along said longitudinal direction. A screw rotation drive wheel is mounted at the other end called the "second end" of the body, while the first end can be closed off by a cap.

In addition, it is common for the piston to have openings opening opposite the two ends of the body, and that a sealing system, most often constituted by a disposable capsule interposed, is provided between the first end of the body and the shutter cap. Thus, it is possible to make the stick directly in the packaging, using the hollow body as a mold. More precisely, the rod is obtained from the second end of the body, by casting the chosen product in the fluid state, through the orifices of the piston, then by solidification of this product inside the body, before mounting the thumb wheel drive through which the second end is generally closed.

However, this type of packaging of the prior art has many drawbacks. In particular, it is difficult with known packaging to find for the body a material which satisfies economically acceptable, both the mechanical requirements and compatibility with the product of the pasty stick. Similarly, with the packaging of the prior art, it is not easy to differentiate the appearance of the dispenser packaging according to the pasty product that it contains. In other words, except for producing different hollow bodies for the same type of packaging, which is extremely expensive, all these packaging are substantially identical, regardless of the pasty product that they contain.

Yet another major drawback of the packaging of the prior art is that the rod displacement device, that is to say the screw and the displacement piston, must be mounted inside the body by its first end. This unnecessarily increases the number of operations required to assemble the package.

In addition, the sealing systems of known packages, which are generally constituted by an insert like a capsule, are not always perfectly effective for casting the stick and increase the cost price of the package, as well as the number of operations required for its assembly.

Furthermore, the sealing system of known packages must be removed from the body before the first use of the stick, which is often perceived as a tedious operation by the consumer. Obviously, once removed, the sealing system is thrown in the garbage independently of the rest of the packaging, so that the recycling of all the materials which constitute the latter cannot be carried out simultaneously. Also, once the sealing system removed, the stick of pasty product tends to deteriorate quickly, mainly by evaporation of the volatile elements contained in the pasty product of the stick, such as alcohols, water, etc.

Consequently, the object of the present invention is to propose an economical dispenser packaging for a stick of pasty product, which overcomes among other things the drawbacks mentioned above of the prior art.

To this end, the subject of the invention is a dispenser packaging essentially of synthetic material, for a pasty product in the form of a stick, such as for example deodorant or lipstick, and of the type comprising a hollow body inside which the stick pasty is guided in a longitudinal direction, between a retracted position and a position of use projecting from a first end of the body, a rod displacement device constituted by a sliding piston of which the rod is secured and by a screw capable of cooperate with the piston to move it in said direction, a rotary drive wheel for the screw mounted on the other end or second end of the body, as well as a closure cap for the first end, a sealing system being provided between the cap and the body, while the piston has orifices opening out opposite the two ends of the body, so that the rod is obtained from the second end of the body, by pouring of the product through said orifices and solidification in the body, before mounting the drive wheel, characterized in that the body comprises on the one hand an internal jacket which defines the two longitudinal ends and which is made of an elastically material deformable, compatible with the pasty product, and a cannon or fixed external sleeve, partially surrounding said liner, and on the other hand means of integrated assembly of the sleeve with the internal liner.

According to another characteristic, the internal jacket has a surface of revolution formed as a whole and arranged opposite the second end of the body, while the aforementioned drive screw, which is introduced into the packaging by this end, comes to bear in said direction and is guided in rotation against this surface of revolution of the jacket.

Preferably, the aforementioned sealing system comprises a lip which constitutes the first end of the internal jacket, and capable of being housed hermetically by deforming, in a groove of corresponding shape of the cap, when the latter is in position d the body of the packaging.

In addition, provision may be made for the aforementioned sealing system to comprise, between the first end and the external sleeve, at least one peripheral protuberance formed integrally with the internal jacket, as well as a corresponding surface of the cap against which the protrusion is hermetically pressed while deforming, when the cap is in the closed position of the packaging body.

According to yet another characteristic of the invention, the internal jacket comprises near its first end, a thread with which cooperates a thread of the aforementioned cap, so that at the end of screwing, that is to say in position shutter, the latter exerts on the shirt a force approximately oriented towards the second end of the body.

Advantageously, the integrated assembly means comprise on the one hand at least one device for positioning and immobilizing the jacket relative to the external sleeve, and on the other hand at least one device for fixing by elastic stapling or "clipping "of the shirt and said sleeve.

The invention is also characterized in that the guide edges of the piston and of the rod, integrally formed with the internal jacket, extend in projection approximately parallel to the abovementioned longitudinal direction, and the end opposite to the cap. these edges preferably constituting the abovementioned surface of revolution guiding the drive screw.

According to the illustrated embodiment, the external sleeve of the body is made of a rigid material such as styrenic plastic or a metal, and may include decorative elements such as, for example, prints, transparent parts, inlays, reliefs or the like.

It will also be noted here that the sleeve may have, near its end opposite the cap, another surface of revolution capable of guiding the drive wheel in rotation relative to the body of the package.

In this case, the internal jacket of the body will preferably comprise, near the second end, at least one collar or peripheral sealing ring, capable of being pressed while being elastically deformed against the inside of the drive wheel.

In addition, it is possible that the aforementioned drive wheel and the displacement screw have dog clutch elements, which are integral and which engage each other so as to make said screw integral in rotation with the drive wheel.

However, other characteristics and advantages of the invention will emerge more clearly from the detailed description of an embodiment, given solely by way of example, which follows and refers to the appended drawings, in which.

Figure 1 is an elevational view, partially in section and cut away, of a dispenser package according to the invention.

Figure 2 is a cross-sectional view, along line II-II, of the piston of the package of Figure 1.

Figure 3 is a cross-sectional view along line III-III of the second end of the package of Figure 1.

FIG. 4 is a partial sectional view along line IV-IV of FIG. 3.

FIG. 5 is a partial view of a detail of the sealing system of the packaging of FIG. 1.

Referring to the figures, we can see a dispenser package 1 for any pasty product in the form of a stick. According to the example illustrated, the packaging 1 is provided for a cosmetic hygiene product such as deodorant. However, any other pasty product applicable in the same way, and for example in the field of cosmetics, medicine, DIY, food or the like, can also be packaged in a packaging similar to 1.

This package 1 comprises a hollow body 2, the longitudinal direction of which is parallel to an axis XX ′, as can be seen in FIGS. 1, 2 and 3. Here, the hollow body 2 has an approximately cylindrical shape, whose axis XX 'constitutes the center. However, it is perfectly possible for the hollow body 2 to have an oval, oblong, polygonal or other cross-section allowing, in addition, a good grip on the packaging 1.

Of course, the hollow body 2 must define an internal space in which the stick of pasty product can come to slide, that is to say be guided in the direction XX ', which also constitutes the central axis and longitudinal of this stick. Thus, the stick of pasty product is movable in translation along XX ′, between a retracted position inside the body 2, and a position of use projecting from a first end 825 of the body 2.

This end 825, located at the top in FIG. 1, defines an opening called the upper opening of the internal space delimited by the hollow body 2. The second end of the body 2, that is to say its lower end, is opposite along XX 'at the end 825, and is designated at 27 in FIG. 1.

This second end 27 of the body is closed by a wheel 7, in the form of a bowl and whose section perpendicular to the axis XX 'corresponds substantially to that of the body 2. This wheel (Figures 1 and 3) is mounted on the body 2 so that it can be rotated relative to it, about the axis XX '. The dial 7 makes it possible to control a device 6 for moving the stick, between its retracted and use positions, in one direction or the other.

More specifically, the wheel 7 is integral in rotation with a screw 62 of the device 6, and drives it when it is operated. The displacement screw 62 is disposed inside the body 2 along X-X ', and extends substantially from the lower end 27 to the upper end 825 thereof. In view of Figures 1 and 2, it is understood that the device 6 also comprises a piston 63, the shape of which corresponds substantially to that of the internal space defined by the body 2, in order to be able to be moved with sliding along XX 'to l inside the latter. This piston 63 is integral in rotation and sliding with the stick of pasty product. We already understand that thanks to the device 6, when the screw 62 is turned using the knob 7, the piston 63 which is immobilized in rotation relative to the body 2, moves the stick of pasty product sliding along XX 'and in a direction corresponding to the direction of rotation of the screw 62.

In Figures 1 and 5, we see that the first end 825 of the body 2 can be closed with a plug or cap 5. Like the wheel 7, the cap 5 has the shape of a bowl or cap, but whose concavity is opposite to that of said wheel. In fact, the closure cap 5 is mounted on the body 2 in order to plug its end 825, from which the pasty stick can protrude when the package 1 is used.

It is also noted in FIGS. 1 and 2 that the piston 63 has orifices 61 which each open facing the two longitudinal ends 825 and 27 of the body 2 of the packaging. In other words, the internal space defined by the body 2 is divided perpendicular to XX ′ by the piston 63, and the two parts of this internal space are connected to one another by the orifices 61.

The packaging also includes a sealing system 8 provided between the cap 5 and the body 2. Thanks to this sealing system and to the orifices 61, when the packaging 1 is placed upside down, that is to say -to say with the first end 825 downwards, the part of the internal space of the body 2 extending from the first end 825 to the piston 63, can act as a mold for the production of the stick, by casting through the orifices 61 of a fluid transforming after solidification into a stick of selected pasty product. The line perpendicular to XX ′ visible in FIG. 1 and designated at N indicates the level of filling of this fluid inside the package 1. In view of level N, it is understood that the stick at least partially fills the orifices 61 of the piston 63, which preferably have a flared shape towards the second end 27 of the body 2. Thus, the stick of pasty product is made integral both in rotation and sliding along XX 'of the piston 63. It goes without saying that after filling, for example using one or more flexible nozzles with a diameter smaller than that of the orifices 61 and therefore capable of penetrating into the internal space where the stick is molded, the second end 27 of the body 2 is plugged using the wheel 7.

According to the invention, the body 2 comprises on the one hand an internal jacket 3 and on the other hand a cannon or fixed external sleeve 4. The internal jacket 3 of the body 2, which brings together the essentials of the functional elements of the packaging 1, projects along the axis XX 'of the sleeve 4, and therefore defines the two longitudinal ends 825 and 27 of the body 2. For its part, the external sleeve 4 which partially surrounds the internal jacket 3, constitutes the fixed part of the packaging which is taken in hand by the user when the latter actuates the thumb wheel 7. Thanks to this particular structure of the invention, the outside of the body 2, that is to say the socket 4, can easily be provided with decorative elements such as for example prints, transparent parts, inlays, reliefs or the like, while the internal part, namely the jacket 3, is made of an elastically deformable material and compatible with the pasty product constituting the stick c corrugated in the packaging 1. In addition, protuberances and recesses of appropriate shape have come together with the inner jacket 3 and the sleeve 4, to constitute integrated means for assembling the two constituent elements of the body 2.

Following the illustrated example which relates to a packaging for lip cosmetic product such as red lip, the inner jacket 3, the sliding piston 63 and the displacement screw 62 are made of a synthetic and plastic material such as polypropylene, for example. When the outer sleeve 4, the cap 5 and the wheel 7, these are preferably made of a rigid material such as styrene plastic, whose appearance and mechanical strength are appropriate. Obviously, other materials can also be used for the external parts (4, 5 and 7) of the packaging 1, such as in particular styrene-acrylonitrile, or polymers such as polystyrene, and in particular that which is designated by common designation. ABS. Likewise, wood or metal can be used for the external parts of the packaging 1. Similarly, it is not imperative to make the internal jacket 3 of polypropylene, and this can be obtained by molding of polyoxide of methyl (POM) or the like.

Now, the different elements of the package 1 illustrated in the figures will be described. It is understood from FIG. 1 that the aforementioned sealing system 8 is not here constituted by a part interposed between the closure cap 5 and the body 2, but comprises a lip integrally formed with the internal jacket 3 and which forms the first end 825 thereof. The lip 825 extends along the entire periphery of the jacket 3 so as to be able to be housed hermetically by deforming in a groove of corresponding shape of the cap 5, when the latter is in body closing position 2. The body 2 closing position by the cap 5 is that which is illustrated in particular in Figure 1, and corresponds to a complete engagement of the cap 5 on the body 2. It is understood by referring in particular in FIG. 5, that when the cap 5 is removed from the body 2, the peripheral end lip 825, which is made of an elastically deformable material and which projects along XX ′ from the external sleeve 4, is in a rest position in which it is not placed exactly opposite the groove of the cap 5, but slightly towards the inside of the internal space defined by the body 2. However, it is also noted that the groove of the cap 5 has a shape which widens towards the second end of the package 1, so that the lip 825 is deformed radially outward when it enters the groove, which has the effect of hermetically pressing its internal peripheral surface against a corresponding surface of the external periphery of the groove of the cap 5.

As indicated above, the sealing system 8 further comprises, between the first end 825 and the rigid bushing 4, at least one peripheral or radial protuberance, integrally formed with the jacket 3, as well as a corresponding surface of the cap 5 against which each protrusion is hermetically pressed while being deformed, when the cap is in the closed position of the body 2.

Referring to Figures 1 and 5, we see that according to the illustrated embodiment, several radial protrusions 833 formed integrally with the jacket 3, protrude in the manner of rings extending respectively in planes perpendicular to the axis XX ′, of the external surface of this jacket which includes the lip 825. In fact, the peripheral radial rings 833, which are three in number here, protrude from an external surface of the jacket 3 substantially frustoconical and the diameter of which decreases towards the lip 825. The closure cap 5 has a surface of corresponding shape, which extends to inside of it, between the groove with which the end lip 825 cooperates, and an internal thread 53, by means of which the cap 5 can be screwed onto the body 2.

More specifically, the part of the jacket 3 which projects from the external sleeve 4 and which comprises the lip 825, has a thread 35 with which the thread 53 of the cap 5 cooperates. The thread 53 and the thread 35, as well as the flange free peripheral of the cap 5, are arranged so that at the end of screwing, that is to say in the closed position, the cap 5 exerts on the jacket 3 a force approximately oriented towards the second end 27 of the body 2 This not only makes it possible to obtain the deformations mentioned above of the lip 825 and of the annular protrusions 833 against the corresponding surfaces of the cap 5, but also to guarantee good maintenance in the closed position of the packaging 1.

The force exerted by the cap 5 in the closed or end of screwing position, also has the effect of compensating for the manufacturing tolerances of the packaging 1. In fact, it can be seen in FIG. 1 that in the position of obturation, the free peripheral end of the cap 5 comes to rest on the one hand against a corresponding end of the rigid bush 4 (to obtain a uniform external appearance of the package 1), as well as against an annular protuberance 835 of the jacket 3, which extends projecting therefrom along a plane perpendicular to the axis XX ′. A peripheral recess is provided below the protuberance 835, which projects along the axis XX ′, from the end mentioned above of the sleeve 4, when the cap 5 is not mounted on the body 2 Thus, at the end of screwing on the cap 5, the peripheral end lower of it comes to bear against and elastically deforms the annular protuberance 835 of the jacket 3, so that the latter moves towards the recess which is formed below it. Such flexible support of the cap 5 against the annular protuberance 835 further improves the seal between the body 2 and the cap 5, but above all allows the compensation of the manufacturing clearances and the immobilization in the closed position thereof.

Referring now to FIG. 2, it can be seen that the inner jacket 3 comprises, projecting radially inwards from the space defined by the body 2, a plurality of edges or ribs made of material 36. These edges 36 which extend approximately parallel to the axis XX ′, are here 5 in number and are regularly distributed over the internal periphery of the jacket 3. Each of the edges 36 of the jacket 3 is housed in a groove of corresponding shape of the piston 63, in order to guide the latter along the axis XX ′. Similarly, the piston 63 illustrated has five filling orifices 61, the section of each of which is perpendicular to the axis XX 'is substantially circular and which are arranged so that on a same radius of the piston 63, either a filling orifice is formed. 61, ie a longitudinal groove for an edge 36. It goes without saying in the light of FIGS. 1 and 2 in particular, that these longitudinal edges 36 which cooperate with the grooves of the piston 63, also make it possible to immobilize the latter in rotation as well as stick of pasty product.

It will be noted here that according to the illustrated embodiment, at the end 27 of the body 2, that is to say at its end opposite to the cap 5, the edges 36 of the jacket 3 define a surface of revolution 366 thanks to which, as will be explained later, the displacement screw 62 is immobilized axially and guided in rotation relative to the body 2.

Now, the integrated assembly means of the inner jacket 3 and the outer sleeve 4 will be described. As is clear from FIG. 1, these assembly means comprise on the one hand at least one device for positioning and immobilizing the jacket 3 relative to the sleeve 4, (as seen in particular on the cutaway part of FIG. 1), and on the other hand at least one fixing device by elastic stapling or "clipping" 437.

The device for positioning and immobilizing the packaging 1 illustrated comprises parts 431 of the jacket 3 projecting from the outside thereof, as well as corresponding housings 433 formed inside the socket 4. The protruding parts 431 each have the shape of a "T" whose vertical bar is approximately parallel to the axis XX ', and whose transverse bar is perpendicular to this axis. In fact, the transverse bars of the projecting parts 431 of the jacket 3 are contiguous and constitute a peripheral annular protuberance, above which extends the protuberance described above 835 as well as the recess towards which it deforms. when the cap 5 is mounted on the body 2. The concave parts 433 with which the projecting parts 431 of the jacket 3 cooperate, have the form of tapered slots or "V". As is clear from FIG. 1, the free end of each parallel branch XX ′ of the projecting parts 431 bears against the bottom of a concave part 433 in the form of a V, when the sleeve 4 is mounted along X- X ', around the folder 3. It goes without saying that this assembly of the sleeve 4 is made by engaging the sleeve 4 on the jacket 3, by the second end 27 (or lower end) of the latter. We understand that this engagement of the sleeve 4 on the jacket 3 is possible until the concave parts or housing 433 abuts against the protruding parts 431. In fact, the parts 431 and 433 act as an axial stop along X -X ', and also immobilize the shirt 3 in rotation relative to the bush 4.

Obviously, the elastic stapling or "clipping" of the shirt 3 on the sleeve 4 using the devices 437 must be carried out before the parts 431 and 433 come into abutment against each other. According to the illustrated embodiment, the clipping device 437 comprises a plurality of projecting notches integrally formed with the jacket, with each of which cooperates a corresponding recess of the sleeve 4. It can be seen in FIG. 1 that the clipping devices 437 are provided at the end of the sleeve 4 which is opposite to the parts 433, that is to say at its end closest to the second end 27, and therefore to the drive wheel 7.

It will be noted here that this wheel 7 is also mounted on the body 2 by displacement along the axis XX ′, towards the cap 5. More specifically, the wheel 7 is moved along XX ′ towards the cap 5 until that its free peripheral end comes to bear against a corresponding peripheral end surface 47 of the external sleeve 4. The lower peripheral end 47 of the sleeve 4 here defines a surface of revolution able to guide in rotation and to immobilize along XX ' the drive wheel 7 with respect to the body 2. Here, the surface 47 comprises a portion of near perpendicular to the axis XX ′ as well as a centering shoulder, but could of course have any other suitable shape, such as for example a frustoconical shape tapering towards the end 27. It can also be seen in FIG. 1 that 'near the device 437, the jacket 3 has other notches projecting outwards. These other notches cooperate with a corresponding edge of the wheel 7, and allow the fixing of the latter by elastic stapling on the shirt 3, and therefore on the body 2. Of course, this elastic stapling on the shirt 3 of the wheel 7 s 'before this comes into abutment against the guide surface 47 of the outer sleeve 4.

In FIGS. 1 and 3, it can be seen that between the device 437 and the lower end 27, the jacket 3 has at least one external peripheral flange designated by the reference numeral 93. In fact, the folder 3 illustrated has four annular flanges or peripheral rods 93, so each comes to be pressed by deforming elastically against the interior of the drive wheel 7, when the latter is mounted on the body 2. In view of Figure 1, it is clear that these rods peripherals 93 have the function of hermetically isolating from the outside, the internal space defined by the body 2, at its lower end 27. In other words, thanks to the sealing rods 93, the wheel 7 tightly seals the second end 27 of the body 2, when it is mounted on the latter.

However, before mounting the wheel 7, it is imperative to introduce the displacement device 6 inside the body 2. In fact, the longitudinal screw 62 and the piston 63 are preferably assembled by screwing, as a result of which the device 6 thus formed is introduced into the body 2, from the second end 27. It will be noted here that, unlike all equivalent packages of the prior art, the package 1 conforms to the invention makes it possible to assemble all of its elements and parts in the same direction, that is to say towards its closure cap 5.

From Figures 1, 3 and 4, it is understood that the screw 62 comprises, at its end opposite to the closure cap 5, a part 627 made of material and approximately in the shape of a wheel (see Figure 3). This wheel is received with clearance, during the mounting of the device 6 in the body 2, inside a cylindrical part of the jacket 3, which extends from the surface of revolution 366 formed by the edges 36 mentioned, to the second end 27 of the body 2. Thus, for mounting the device 6, the grooves of the piston 63 are engaged along XX 'in the longitudinal edges 36, until a suitable surface of the wheel 627 of the screw 62 comes to bear against the rotation surface 366 of the jacket 3, which is arranged for this purpose opposite the end 27. In this way, the screw 62 is positioned along X-X ', and is guided at rotation by the surface of revolution 366 formed by the end of the edges 36. Although in FIG. 1 the guide surfaces between the jacket 3 and the screw 62 extend roughly perpendicular to the axis XX ′, and it is also possible that these are oriented differently, and are for example tapered example.

It is also thanks to the wheel 627 of the screw 62 that the latter can be made integral in rotation with the dial 7. However, it can be seen in FIG. 3 that this wheel 627 has solid spokes which extend radially from the screw 62 proper towards a rim-shaped part of the wheel 627, by means of which the latter cooperates with the liner 3. These solid spokes not only define orifices which open on the one hand opposite the orifices 61 of the piston 63, and on the other hand facing the end 27 of the body 2 in order to allow the filling of the latter during the production of the pasty stick by molding, but Also constitute interconnection elements, which come into engagement with elements 762 of the dial 7. These interconnection elements of the dial 7 are, as can be seen in FIG. 4, in the form of teeth coming from material. More specifically, the interconnection teeth 662, which extend approximately along XX 'from the interior of the concavity of the wheel 7, have an arcuate shape (FIG. 3) and a free end defining an inverted V. Each interconnection element or tooth 762 of the wheel 7 is housed along XX 'between two solid spokes of the wheel 627, and near a central part or hub of the wheel 627, when the wheel 7 is mounted on the assembly constituted by the body 2 and the device 6. Since each tooth 762 is inserted between two solid spokes of the wheel 627 of the screw 62, the latter is made integral in rotation by clutching the thumb wheel 7.

The operation of the packaging 1 which has just been described is identical to that of the corresponding packaging of the prior art. In other words, when the cap is removed and the user holds the external sleeve 4 of the body 2 in hand, any rotation in one direction or the other of the wheel 7 causes a displacement along the axis XX ' of the pasty stick, in a corresponding direction.

There was therefore obtained in accordance with the invention a dispenser packaging by which an excellent seal is obtained without the interposition of a separate piece between the cap and the body 2, the structure of which is particularly simple and easy to assemble. Indeed, the assembly of the packaging 1 consists in fixing the shirt 3 on the sleeve 4, in assembling the body 2 thus constituted with the cap 5, then in introducing into this body the displacement device 6. Then, in particular thanks to at the seal obtained using the parts 825, 833 and 835 described above, the pasty stick can be obtained by molding in the internal space of the body 2, after which the second end 27 of the latter can be closed thanks to the watertight mounting (peripheral rods 93) of the wheel 7. It will also be emphasized here that with respect to the cap 5, the jacket 3, the sleeve 4, the device 6 and the wheel 7 are all mounted in the same direction, c 'that is to say from bottom to top in Figure 1, which makes the assembly of the package according to the invention extremely fast and simple.

Obviously, the invention is in no way limited to the embodiment which has just been described, and includes all the equivalents and all the combinations of the technical means illustrated, if these are carried out according to the spirit.

Claims (11)

Distributor packaging essentially of synthetic material, for pasty product in the form of a stick, such as for example deodorant or lipstick, and of the type comprising a hollow body (2) inside which the pasty stick is guided in a longitudinal direction ( X-X '), between a retracted position and a position of use projecting from a first end (825) of the body, a movement device (6) of the rod consisting of a sliding piston (63) of which the stick and by a screw (62) able to cooperate with the piston to move it in said direction (X-X '), a wheel (7) for driving the screw (62) in rotation mounted on the other end or second end (27) of the body (2), as well as a cap (5) for closing off the first end (825), a sealing system being provided between the cap (5) and the body (2), while the piston (63) has orifices (61) opening out in the opposite direction d from the two ends of the body, so that the rod is obtained from the second end (27) of the body, by pouring the product through said orifices (61) and solidification in the body (2), before mounting the drive wheel (7), characterized in that the body comprises on the one hand an internal jacket (3) which defines the two longitudinal ends (825, 27) and which is made of an elastically deformable material, compatible with the product pasty, and a fixed external sleeve (4), partially surrounding said sleeve (3), and on the other hand integrated assembly means of the sleeve (4) with the internal sleeve (3). Packaging according to claim 1, characterized in that the inner jacket (3) has a surface of revolution (366) made of material and arranged opposite the second end (27) of the body, while the aforementioned drive screw (62), which is introduced into the packaging by this end, comes to bear in said direction (X-X ') and is guided in rotation against this surface of revolution (366) of the jacket (3). Packaging according to claim 1 or 2, characterized in that the aforementioned sealing system comprises a lip (825) which constitutes the first end of the internal jacket (3), and capable of being accommodated hermetically by deformation, in a groove of corresponding shape of the cap (5), when the latter is in the closed position of the body of the package (1). Packaging according to one of Claims 1 to 3, characterized in that the aforementioned sealing system comprises, between the first end (825) and the external sleeve (4), at least one peripheral protuberance (833, 835) made integrally with the internal jacket (3), as well as a corresponding surface of the cap (5) against which the protuberance is hermetically pressed while being deformed, when the cap (5) is in the closed position of the body of the package (1) . Packaging according to one of claims 1 to 4, characterized in that the internal jacket (3) has, near its first end (825), a thread (35) with which cooperates a thread (53) of the cap (5) above, so that at the end of screwing, that is to say in the closed position, the latter (5) exerts on the jacket (3) a force approximately oriented towards the second end (27) of the body (2 ). Packaging according to one of claims 1 to 5, characterized in that the aforementioned assembly means comprise on the one hand at least one positioning and immobilization device (431, 433) of the jacket (3) relative to the external sleeve (4), and on the other hand at least one fixing device (437) by elastic stapling or "clipping" of the shirt (3) and said sleeve (4). Packaging according to one of Claims 2 to 6, characterized in that the ridges (36) for guiding the piston (63) and the rod, which are integrally formed with the internal jacket (3), extend approximately parallel to the aforementioned longitudinal direction (X-X '), the end opposite the cap (5) of these edges (36) preferably constituting the aforementioned surface of revolution (366) for guiding the rotation of the screw (62) of the displacement device (6). Packaging according to one of Claims 1 to 7, characterized in that the external sleeve (4) of the body is made of a rigid material such as styrenic plastic or a metal, and comprises decorative elements such as, for example, prints, transparent parts , inlays, reliefs or the like. Packaging according to one of claims 1 to 8, characterized in that the fixed external sleeve (4) has, near its end opposite the cap (5), another surface of revolution (47) capable of guiding the wheel in rotation. drive (7) relative to the body (2) of the package (1). Packaging according to one of claims 1 to 9, characterized in that the internal jacket (3) of the body (2) has, near the second end (27), at least one collar or peripheral ring (413) for sealing, capable of being pressed hermetically by deforming elastically against the interior of the drive wheel (7). Packaging according to one of Claims 1 to 10, characterized in that the aforementioned drive wheel (7) and the displacement screw (62) have dog-clutch elements (627, 762), which are integral and mutually engaged so as to make said screw (62) integral in rotation with the drive wheel (7), these elements being preferably located near the axis of rotation (X-X ') of said screw (62).

Images