FR2851991A1 - Plunger dispenser, for a cosmetic/pharmaceutical paste/cream, has a container body with a linked tongue to the piston to allow the body to be filled and then closed by the piston in a one-piece injection molding - Google Patents

Abstract

The plunger dispenser (1), to deliver a paste or cream product, has a body (2) with a hollow interior (20) to contain the product. The upper end (21) has an opening (22) to fill the interior, and allow the piston (3) to pass through. The container wall (23) is shaped into a lower end (24), with an outflow opening (25) which is sealed by a closure (26). The piston seals the upper end of the container, and has a sliding movement to exert an axial pressure on the contents to force them out through the outflow opening. The dispenser body and the piston are linked (4) together by a tongue (40,43) to allow the container to be filled and the piston to be inserted in position.

Description

l

  PISTON DISTRIBUTOR FIELD OF THE INVENTION The invention relates to the field of packaging or distributors of products capable of flowing through an orifice, typically the field of packaging of fluid, liquid or semi-pasty cosmetic products, for example in the form of cream, dough, etc ...

STATE OF THE ART

  Numerous types of packaging of fluid or semi-pasty products are already known.

  Thus, the use of flexible-walled plastic or aluminum tubes is known. In this case, the expulsion of the product contained in the tube is done by manually compressing the skirt so as to expel the product through the orifice of the tube.

  The case of toothpaste tubes is a typical example. Piston distributors are also known in which a piston moves in a body, typically by manual axial thrust, in order to expel the product contained in said distributor.

  The most viscous or rigid products can also be packaged in jars.

PROBLEMS POSED

  The problems associated with dispensing tubes are well known and essentially, they are associated with the deformation of the tube as the product is consumed, a deformation which is unattractive and which can disturb the vertical station of the tube, station vertical generally obtained by the plug by inverting the tube.

  Piston or possibly double-envelope distributors respond to the above problems, but have the disadvantage in particular of their high cost.

  The invention aims to obtain a piston distributor assembly which is economical to manufacture and use when packaging fluid or pasty products to form a piston distributor.

DESCRIPTION OF THE INVENTION

  According to the invention, the dispenser assembly intended to form a piston distributor for dispensing a product, comprises a) a body, said body being intended to contain said product to be dispensed, said body forming a cavity with an upper edge forming a opening for loading said body with said product and then for inserting said piston into said body with a view to closing it known as upper, with a side wall and with a bottom provided with an outlet orifice, typically closed by means of closure, and b) a piston intended to cooperate with said body and to close said opening after loading of said product, said piston distributor being intended to ensure a flow of said product, after opening of said outlet orifice, typically by exerting an axial pressure on said piston . In this assembly, said piston and said body are secured by a connecting means, so as to facilitate the packaging of said product by supplying said assembly, by loading said cavity of said body with said product, then by introduction or assembly of said piston in 25 said body thereby forming said piston distributor.

  As will appear in particular with all of the exemplary embodiments and of the figures, these means of the invention solve the problem posed.

  Indeed, the distributor assembly is in a way a precursor of a piston distributor, piston distributor which is formed during the packaging of the product.

  The invention responds to the problem posed because: - on the one hand, the distributor assembly forms a single object, typically a molded object, so that this object comprises all the parts necessary to form said piston distributor, - on the other hand, as it is much easier to supply a packaging machine with a single flow of parts than with several flows of parts, an assembly according to the invention is particularly advantageous, - finally, after having loaded the product with condition, the piston is automatically close to the body to be closed.

  In particular for all these reasons, the dispenser assembly according to the invention is very advantageous compared to the state of the art.

DESCRIPTION OF THE FIGURES

  1 5 All the figures relate to the invention.

  Figures la to 1f relate to a distributor assembly (1).

  Figure la is a view of an axial section of the dispenser (1), which is an enlarged view of Figure if, Figures 1b to le being on the scale of Figure if.

  Figure 1b is a bottom view. Figure 1c is a side view.

Figure Id is a top view.

  Figure 1c is a side view at 900 of Figure 1c.

  Figures 2a to 2g relate to a piston distributor (5) formed from the assembly (1) of Figures la to lf. In these figures, the product contained in the dispenser (5) has not been shown.

  Figure 2a corresponds to Figure la after tilting the piston (3). It is an enlargement of Figure 2f, Figures 2b to 2e being to the scale of Figure 2f.

  Figure 2b is a bottom view. Figure 2c is a side view.

  Figure 2d is another side view at 90 of Figure 2c.

Figure 2e is a top view.

  Figure 2g is an enlargement of a portion of Figure 2a (bottom and left portion).

  Figures 3a to 3d illustrate a plurality (6) of 7 sets (1) (N = 7), these sets (1) being those of the previous figures and being connected by a strip or molding strip (60) which comprises means of cooperation.

Figure 3a is a side view.

Figure 3b is a top view.

  Figure 3c is a perspective view from the side and from above.

  Figure 3d is a side view at 90 of Figure 3a.

  Figure 4a, similar to Figure 3b, is a variant of plurality (6).

  Figure 4b shows, similarly to Figure 3c, a plurality (7) of 15 distributors (5) secured by a strip or molding strip (60).

DETAILED DESCRIPTION OF THE INVENTION

  According to the invention, said piston (3), said body (2) and said connecting means (4) can form a single piece, typically a one piece molded piece, thanks to said connecting means. This is the most advantageous method of the invention, in so far as, with each press stroke of the molding press, typically by injection, a complete part is obtained and in the finished state, which is very advantageous.

  All the figures relate to this modality. However, it would be possible, although this is a priori less economically advantageous, to form said body (2) and said piston (3) separately and to assemble them to obtain the assembly (1) as illustrated in the figs 1 to 1.

  Said connecting means (4) may comprise a tongue (40, 43, 44) chosen so as to be able to mold, typically simultaneously, said body (2) and said piston (3), said tongue, typically flexible, comprising one end C (400) integral with said body and another end P (401) typically integral with said piston (3), so as to be able to close off said body (2), when filled with said product, with said piston (3).

  As illustrated in Figures la and 2b, said piston (3) may include a central panel (30) and a sealing belt (31) intended to cooperate with said body (2) and said side wall (23), so typically waterproof.

  Said central panel (30) and said bottom (24) may have profiles intended to be typically parallel when said piston (3) is introduced into said body (2), so that almost all of said product can be expelled from said body (2) when said piston (3) reaches the end of its travel in contact with said bottom (24).

  As illustrated in dotted lines in FIG. 2a, said piston (3) or said central panel (30) can comprise a means of manual pushing (32) of said piston into said body, said means being typically a central projection (32 ') on which a finger can bear to exert said axial pressure.

  This pushing means can in itself be used for a standing station and to increase the capacity of said body, so as to be able to manually push said piston into abutment against the bottom (24), even in the case of a side wall (23 ) of relatively large height.

  As illustrated in FIGS. 1a, 2a and 2g, said connecting means (4) may comprise a crown (41) integral with said sealing belt (31) and said tongue (40) by its end P (401), said crown (41) being intended to cooperate with said upper edge (21) when said piston (3) is introduced into said body (2) and closes it.

  This crown (41) typically snaps into said upper rim (21).

  Advantageously, a weakening line (42) with bridges of material connects said crown (41) to said sealing belt (31), so that, typically, said bridges are broken only during a first use of said product. In fact, the closing of said opening (22) by said piston (3) does not typically cause the bridges between the crown (41) and the piston (3) to break.

  As illustrated in FIGS. 1a to 2g, said connecting means (4) may be constituted by a flexible tongue (43) forming a connecting tongue, said flexible tongue (43) being connected at its end P (401) to said piston ( 3) by a weakening line 5 with bridges of material, so that, typically, said bridges are broken only during the first use of said product.

  In this case, this flexible tab (43) typically forms a residual handle on the dispenser, as can be seen in Figures 2a to 2g.

  According to the invention, said crown (41) or said connecting tongue (40, 43) can cooperate with said upper edge (21), typically thanks to one or more radial recesses (410) formed on said crown, and to one or several external peripheral recesses (210) formed on said upper edge (21), so as to have a fitting of said connecting tongue (40, 43) and / or of said crown (41) on said upper edge 15 (21), said crown (41) comprising a succession of solid parts and of recessed parts, said solid parts cooperating with said peripheral recesses (210), and so that said crown (41) or the P end (401) of said tongue flexible (40, 43) remains integral with said upper edge (21) typically even after rupture of said bridges.

  As can be clearly seen in FIGS. 1a and 2b, said upper flange (21) may include an interior surface or section in continuity with that of said side wall (23), and an exterior surface or section partially or entirely set back by relative to that of said side wall (23), so as to form a circular recess 25 (213) capable of being occupied, in whole or in part, by said crown (41) or said connecting tongue (40, 43). Thus, the snap-fastening of the crown (41) and more generally of the connecting means (4), does not form any external excess thickness relative to the side wall (23) of said body (2).

  As shown in FIGS. 1a, 2a and 2g, said upper flange (21) may include an internal rib (214) forming a rear stop for said piston (3), said piston (3) being typically forced into said body ( 2).

  Typically, said connecting tab (40, 43) can be connected at its end C (400) to said upper edge (21) or to said side wall (23) of said body (2), and typically to the upper end of said side wall (23).

  As illustrated in FIG. 2g, said connecting tab (40, 43) may comprise one 10 or more thinned parts (402) capable of forming a hinge allowing the tilting and rotation of said piston (3) to close said opening (22) of said body (2). Thus, the piston is able to undergo a rotation without risk of detaching from said body.

  Advantageously, said outlet orifice (25) can be closed off by a breakable end (27), possibly breakable or manually separable, so as to open said outlet orifice (25). Such a manually breakable end, as formed by a peripheral thinning, has been shown in FIGS. 1a and 2a.

  Such a breakable end (27) can, typically by turning it over, form a plug for said outlet orifice, so as to be able to block said outlet orifice. See the recess represented by dotted lines on the end of the end (27), so as to form said plug.

  In addition, said outlet orifice (25), after rupture or separation of said breakable end, may in particular have a slope suitable for direct application of said product on a support. This method, which has not been shown in a figure, can form an application means making it possible to spread said product.

  According to the invention, said cavity (20) of said body can have a useful capacity ranging from 1 to 200 cm3, and typically from 2 to 20 cm3, so that the dispenser assembly (1) 30 can be used for products used one once or in several times.

  Typically, said side wall (23) of said body (2) can be cylindrical, but there is nothing to prevent having another shape (square, oval, etc.), the round shape being preferable if a good sealing between said piston (3) and said side wall (23) of the body (2).

  According to another embodiment of the invention, said tongue (40) forming said connecting means (4) can be a rigid tongue and can comprise at least one thinned part (440) at said end C (400) integral with said body (2 ) and / or at said end P (401) integral with said piston (3) or with said crown (41), said thinned part (440) being typically brittle by bending, so as to place said piston (3) in said body (2) by breaking said thinned part (440).

  In this case, there is a break in said connecting means (4, 43) at the moment when said piston (3) is introduced into said body, which does not modify the manner of operating since said piston, in particular thanks to said rib interior (214) becomes integral with said body, so that said connecting means (4) is then superfluous and no longer has any reason to be.

  Another object of the invention is constituted by a piston distributor (5) for dispensing a product, comprising a) a body (2), said body being intended to contain said product to be dispensed, said body (2) forming a cavity (20) with an upper edge (21) forming an opening (22) for loading said body (2) with said product and then for introducing said piston (3) into said body for its so-called upper sealing, with a wall lateral (23) and with a bottom (24) provided with an outlet orifice (25), typically closed by a closure means (26), and b) a piston (3) intended to cooperate with said body (2) and closing said opening (22) after loading said product, said piston distributor (5) being intended to ensure a flow of said product, after opening said outlet orifice (25), typically by exerting an axial pressure on said piston ( 3), distributor assembly (1) in which said piston (3) and said body (2) are secured by a connecting means (4), said connecting means (4) comprising a crown (41) integral with said sealing belt (31), said crown (41) being intended to cooperate with said upper edge (21) when said piston (3) is introduced into said body (2) and closes it and in which a weakening line (42) with bridges of material connects said crown (41) to said belt sealing (31), so that, typically, said bridges are broken only during the first use of said product.

  Such a dispenser is similar to that shown in FIG. 2a, but it does not include a tongue (40), said body (2) forming a part, said piston as well as said crown (41) forming another part, a line weakening (42) connecting said piston and said crown.

  Another object of the invention consists of a plurality (6) of assemblies (1) according to the invention. In this plurality, and as illustrated in Figures 3a to 3d, N sets (1), with N typically ranging from 2 to 31, can be secured to a typically rigid rod (60), said sets (1) being typically breakable manually by a thinned part (440), said plurality (6) being typically formed by molding using an N cavity mold. Said plurality (6) shown in Figures 3a to 3d 15 includes 7 distributor assemblies (1) secured to a rod (60).

  Said bodies (2) can be secured to said rod (60), said pistons (3) being secured themselves either to said bodies (2) by said connecting means (4.40), as illustrated in FIGS. 3b and 3c, or to said rod (60) by a typically rigid tongue (44 ').

  These rods (60) may include cooperation means (61) see Figure 3c - so as to be able to form an uninterrupted line of dispenser assemblies (1) running past a feed member loading said cavities (20) in product.

  This plurality (6) may possibly form a series of bodies (2) opposite a series of parts comprising said piston (3) and said crown (41) secured to said piston by a weakening line (42).

  During packaging, the part forming said piston (3) and said crown (41) is typically detached from the rod (60), but possibly this part as well as said body can both be detached in the case where a plurality of distributors ( 5) would not be desired.

  Another object of the invention is constituted by the piston distributor (5), typically loaded with said product, formed from the assembly (1) according to any one of claims 1 to 20. Such a piston distributor (5 ) has been shown in Figures 2a to 2g.

  Another object of the invention consists of a plurality (7) of piston distributors (5), typically loaded with the same product or with different products, formed from said plurality of assemblies (6) according to the invention. Such a plurality (7) has been shown in FIG. 4b.

  Another object of the invention is constituted by the use of said piston distributor (5) according to the invention for the packaging of all typically pasty or creamy fluid products, including cosmetic or pharmaceutical or hygiene products, such as skincare creams or foundations, products with a viscosity of up to 45 15,000 centipoises.

  Said piston distributor (5) can also be used for the distribution of said product in a single take, possibly as a sample.

  Another object of the invention is constituted by the use of said plurality (7) of 20 piston distributors (5) according to the invention for the packaging of all typically pasty or creamy fluid products, including cosmetic or pharmaceutical products or hygiene products, such as skincare creams or foundations, products with a viscosity of up to 45,000 centipoise.

  Said plurality (7) of piston distributors (5) can be used for the packaging of a number N of unit doses of identical or different products.

EXAMPLES OF REALIZATION

  All the figures constitute exemplary embodiments. he

  All the objects of the present invention, whether they are distributor assemblies (1), piston distributors (5), pluralities (6) of distributor assemblies (1), or pluralities (7) of distributors piston (5), were manufactured by injection molding of polyolefin, PE in particular, forming one-piece parts, using in particular a mold with 7 cavities.

  Other tests were carried out by injection molding of PP, PET, PA.

  ADVANTAGES OF THE INVENTION The invention has great advantages.

  In fact, the invention is already advantageous in itself as regards the manufacture of the distributor assemblies (1) and of the corresponding piston distributors (5), since it is both economical to manufacture and to use, in particular during from the conditioning step.

  However, the invention is particularly advantageous in the case of pluralities (6) of distributor assemblies (1) and pluralities (7) of piston distributors (5). Indeed, it facilitates the conditioning step by forming continuous lines of cavities to be filled.

  It opens the way to many possibilities, as much in the field of pharmacy as in that of body or facial care, or in many other fields.

  For example, in the pharmacy field, it is possible to provide that each dispenser (5) will constitute an hourly dose or a daily, or even weekly, dose of a given product, with a marking carried by said rod (60 ) in front of each distributor (5).

  In the field of beauty care, each dispenser (5) can correspond to a usual dose for an application.

  In other fields, for example in that of additives or paints, each distributor can package a given dose of a given product.

  But said plurality (7) can also form a palette of all the products that one may wish to have available simultaneously.

LIST OF REFERENCES

  Distributor assembly. . ....... 1 Monobloc piece. . 10 Vertical axis of the body. .l .......... 11 Body. ............................................

  .......

2 Cavity. . .

20 Upper edge ..........................

21 Peripheral recess. ........

210 Surface or interior section .......... DTD: ..

211 External surface or section ..........

212 Circular recess ... DTD: ..................

213 Inner rib. ........

214 Opening ......... DTD: .........

22 Side wall .................

23 Background ....................

24 Orifice of 24 ................

25 Closing method. ................... DTD: .......

26 Breakable end ..............................

27 Piston ...

3 Central panel .................................

30 Sealing belt..DTD: .........................

31 Manual pushing means. .

32 Central projection. ............................. 32 'Connection means between 2 and 3 ... DTD: ....... ...........

4 Tab ..................................

40 End C .................................

400 P. end .............. DTD: ...................

401 Thinned part forming a hinge .........

402 Thinned, breakable part. .........

403 Crown ......

41 Radial recess.

410 Line of weakness between 31 and 41 42 Flexible tongue = connecting tongue. .

43 Rigid tongue ................................. DTD: 44 Thinned part. .............................

440 Piston distributor .................................

5 Overall plurality (1) ......... DTD: ........................

6 Baguette .................................

60 Means of cooperation with chopsticks .......

61 Multiple distributors 5 .... DTD: .......................... 7..CLMF: CLAIMS

Claims (29)

1. Distributor assembly (1) intended to form a piston distributor (5)   for dispensing a product, comprising a) a body (2), said body being intended to contain said product 5 to be dispensed, said body (2) forming a cavity (20) with an upper edge (21) forming an opening (22) for loading said body (2) with said product and then for introducing said piston (3) into said body for its so-called upper closure, with a side wall (23) and with a bottom (24) provided with an orifice outlet (25), typically closed by a closing means (26), and b) a piston (3) intended to cooperate with said body 10 (2) and to close said opening (22) after loading of said product, said distributor piston (5) being intended to ensure a flow of said product, after opening of said outlet orifice (25), typically by exerting an axial pressure on said piston (3), distributor assembly (1) in which said piston (3) and said body (2) are secured by a connecting means (4), so as to facilitate the packaging of said product by supplying said assembly (1), by loading said cavity (20) of said body (2) with said product, then by introduction or assembly of said piston (3) in said body (2) thereby forming said distributor piston (5).   2. The assembly of claim 1 wherein said piston (3), said body (2) and said connecting means (4) form a one-piece part, typically a one-piece molded part, by said connecting means.   3. An assembly according to any one of claims 1 to 2 wherein said connecting means (4) comprises a tongue (40, 43, 44) chosen so as to be able to mold, typically simultaneously, said body (2) and said piston ( 3), said tongue, typically flexible, comprising one end C (400) integral with said body and another end P (401) typically integral with said piston (3), so as to be able to close off said body (2), when filled with said product, with said piston (3).   4. An assembly according to any one of claims 1 to 3 wherein said piston (3) comprises a central panel (30) and a sealing belt (32) intended to cooperate with said body (2) and said side wall (23) , typically sealed.   5. Assembly according to any one of claims 1 to 4 wherein said central panel (30) and said bottom (24) have profiles intended to be typically parallel when said piston (3) is introduced into said body (2), so almost all of said product is expelled from said body (2) when said piston (3) reaches the end of its travel in contact with said bottom (24). 10 6. An assembly according to any one of claims 1 to 5 wherein said piston (3) or said central panel (30) comprises a manual pushing means (32) of said piston in said body, said means being typically a central projection (32 ' ) on which a finger can rest to exert said axial pressure. 15 7. An assembly according to any one of claims 1 to 6 wherein said connecting means (4) comprises a crown (41) integral with said sealing belt (31) and said tongue (40) by its end P (401) , said crown (41) being intended to cooperate with said upper edge (21) when said piston (3) is introduced into said body (2) and closes it.   8. The assembly of claim 7 wherein a weakening line (42) with bridges of material connects said ring (41) to said sealing belt (31), so that, typically, said bridges are broken only during the first use of said product.   9. An assembly according to any one of claims 1 to 6 wherein said connecting means (4) is constituted by a flexible tongue (43) forming a connecting tongue, said flexible tongue (43) being connected at its end P (401) to said piston (3) by a weakening line with bridges of material, so that, typically, said bridges are only broken when the first use of said product.   10. Assembly according to any one of claims 7 to 9 in which said crown (41) or said connecting tongue (40, 43) cooperate with said upper edge (21), typically thanks to one or more radial recesses (410) formed on said 5 crown, and to one or more external peripheral recesses (210) formed on said upper edge (21), so as to have a fitting of said connecting tongue (40, 43) and / or of said crown (41) on said upper edge (21), said crown (41) comprising a succession of solid parts and recessed parts, said solid parts cooperating with said peripheral recesses (210), and so that said crown (41) or the end P (401) of said flexible tongue (40, 43) remains integral with said upper edge (21) typically even after rupture of said bridges.   11. An assembly according to any one of claims 1 to 10 in which said upper flange (21) comprises an interior surface or section in continuity with that of said side wall (23), and an exterior surface or section in part or in whole. withdrawal relative to that of said side wall (23), so as to form a circular recess (213) capable of being occupied, in whole or in part, by said crown (41) or said connecting tongue (40, 43) .   12. An assembly according to any one of claims 1 to 11 wherein said upper flange (21) comprises an inner rib (214) forming a rear stop for said piston (3), said piston (3) being typically forced into said body (2).   13. An assembly according to any one of claims 3 to 12 in which said connecting tab (40, 43) is connected at its end C (400) to said upper edge (21) or to said side wall (23) of said body (2 ), and typically at the upper end of said side wall (23).   14. An assembly according to any one of claims 3 to 13 wherein said connecting tongue (40, 43) comprises one or more thinned parts (402) capable of forming a hinge allowing the tilting and rotation of said piston (3) to closing said opening (22) of said body (2).   15. An assembly according to any one of claims 1 to 14 wherein said outlet orifice (25) is closed by a breakable end (27), optionally breakable or separable manually, so as to open said outlet orifice (25).   16. The assembly of claim 15 wherein said breakable end (27) forms a plug for said outlet, so as to be able to close said outlet. 10 17. An assembly according to any one of claims 15 to 16 wherein said outlet orifice (25), after rupture or separation of said breakable end, in particular has a slope suitable for direct application of said product on a support.   18. An assembly according to any one of claims 1 to 17 wherein said cavity (20) of said body has a useful capacity ranging from 1 to 200 cm3, and typically from 2 to cm3.   19. An assembly according to any one of claims 1 to 18 wherein said side wall (23) of said body (2) is cylindrical.   20. An assembly according to any one of claims 1 to 8 and 10 to 9 wherein said tongue (40) forming said connecting means (4) is a rigid tongue and comprises at least one thinned part (440) at said end C (400 ) integral with said body (2) and / or at said end P (401) integral with said piston (3) or with said crown (41), said thinned part (440) being typically brittle by bending, so as to place said piston (3) in said body (2) by breaking said thinned part (440).   21. Piston distributor (5) for dispensing a product, comprising a) a body (2), said body being intended to contain said product to be dispensed, said body (2) forming a cavity (20) with an upper edge ( 21) forming an opening (22) for loading said body (2) with said product and then for introducing said piston (3) into said body for its so-called upper closure, with a side wall (23) and with a bottom ( 24) provided with an outlet orifice (25), typically closed by a closing means (26), and b) a piston (3) intended to cooperate with said body (2) and to close said opening (22) after 5 loading of said product, said piston distributor (5) being intended to ensure a flow of said product, after opening of said outlet orifice (25), typically by exerting an axial pressure on said piston (3), distributor assembly (1) in which said piston (3) and said body (2) are secured by a connecting means (4 ), said connecting means (4) comprising a crown (41) integral with said sealing belt (31), said crown (41) being intended to cooperate with said upper edge (21) when said piston (3) is introduced into said body (2) and plugs it and in which a weakening line (42) with bridges of material connects said crown (41) to said sealing belt (31), so that, typically , said bridges are only broken during the first use of said product. 15 22. Plurality of sets (6) according to any one of claims 1 to 20 in which N sets (1), with N typically ranging from 2 to 31, are secured to a rod (60) typically rigid, and typically breakable manually, said plurality (6) being typically formed by molding using an N cavity mold. 20 23. Plurality according to claim 22 in which said bodies (2) are secured to said rod (60), said pistons (3) being secured themselves either to said body (2) by said connecting means (4, 40) either to said rod (60) by a typically rigid tongue (44 ').   24. Piston distributor (5), typically loaded with said product, formed from the assembly (1) according to any one of claims 1 to 20.   25. A plurality of piston distributors (5), typically loaded with the same product or with 30 different products, formed from said plurality of assemblies (6) according to any one of claims 22 to 23 or formed from said distributor piston (5) according to claim 21.   26. Use of said piston distributor (5) according to any one of claims 5 21 and 24 for the packaging of all typically pasty or creamy fluid products, including cosmetic or pharmaceutical or hygiene products, such as care creams or foundations, viscosity products of up to 45,000 centipoise.   1o 27. Use according to claim 26 for the distribution of said product in a single take, optionally as a sample.   28. Use of said plurality of piston distributors (5) according to claim 25 for the packaging of all typically pasty or creamy fluid products, including cosmetic or pharmaceutical or hygienic products, such as care creams or foundations, viscosity products up to 45,000 centipoise.   29. Use according to claim 27 for the packaging of a number N of unit doses of identical or different products.