FR2868262A1 - PRODUCT DISPENSER BODY OF PLASTIC AND MOBILE MATERIAL - Google Patents

Abstract

Said hollow body (1) comprises a side wall (2) and a lift base (3) and is characterized in that: a) said body (1) comprises a part (12) forming all or part of said bottom (3) ), axially movable (12) under axial axial force exerted on said portion (12), thanks to a flexible wall portion (11) surrounding said movable portion (12) and thickness chosen so that said flexible wall has a resilient bending, b) said flexible wall portion (11) is an annular portion inscribed in a circle typically centered on the axial direction (10) of said body (1), c) said body (1) is formed of a material plastic adapted to have said resilient bending for said flexible wall portion (11) .Advantages: the axial manual pressure (7) exerted on said movable part (12) allows a repeated and reliable movement of the movable part, in order to trigger a technical effect within said hollow body, thanks to an auxiliary part (5).

Description

PRODUCT DISPENSER BODY OF PLASTIC AND MOBILE MATERIAL

  FIELD OF THE INVENTION The invention relates to the field of conditioning pasty cosmetic products such as creams, or in the divided state such as makeup powders.

  It concerns in particular plastic dispenser bodies, for example jars of cosmetics, with a bottom and a lid typically screwed to the bottom.

  It can also concern the packaging of food products or even pharmaceutical products.

STATE OF THE ART

  Commercial jars commonly used include a plastic body consisting of a bottom and a side skirt whose top opening is threaded, and a threaded cap closing the top opening.

PROBLEMS POSED

  On the one hand, plastic bodies or pots of the state of the art typically have a rigid bottom of a depth generally ranging from 3 to 6 cm or more, so that it is difficult to access the entire product contained in the pot, in order to have a high rate of return of the product contained in said pot.

  On the other hand, in many cases, it is with the fingers that the pasty product is removed from said pot, then applied to the face or the skin in general. However, such a sampling and such manual application are sources of finger soiling and possible pollution of the product to be applied.

  Moreover, more and more distributors bodies comprising complementary means to facilitate the distribution or application of said product. These additional means may also constitute means for heating or cooling the product to be dispensed.

  The valve bodies or the traditional pots are not suitable for the introduction of such complementary means.

DESCRIPTION OF THE INVENTION

  According to the invention, the hollow body of a dispenser of a product, typically a cosmetic product, typically having a symmetry of revolution in an axial direction of said body, comprises a side wall and a support base, said side wall. being provided with an upper rim, typically provided with an external thread, forming an opening, and is characterized in that: a) said body comprises a part, forming all or part of said bottom, axially movable under axial axial stress exerted on said part, thanks to a flexible wall portion of said side wall or said bottom surrounding said movable portion and of thickness chosen so that said flexible wall has a resilient bending and forms a hinge, b) said wall portion flexible is an annular portion inscribed in a circle typically centered on said axial direction of said body, c) said body is formed of a plastic material ee able to have said resilient bending for said flexible wall portion, so that said axial axial pressure or pressure exerted on said movable portion pushes it inside said body in an axial displacement, said movable portion emerging from said body and typically resuming its original axial position as soon as said manual constraint ceases.

  The combination of means according to the invention solves the problems posed.

  Indeed, the Applicant has observed that it was thus possible to have a plastic dispenser body to have a bottom with an axial stroke to implement or trigger a technical effect, this technical effect can be of any kind among the already known technical effects.

  This technical effect can be related to the distribution of said product. Thus, for example, the axial displacement of said movable part can serve as a propellant for said product, a displacement which can be repeated as often as desired during the dispensing or the application of said product, the product being expelled when said pressure is exerted 1 manual, said body being able to be closed by a grid, and the air entering said body during elastic return of said movable part.

  This technical effect can also relate to an operation to be performed before the actual distribution: it is then for example to trigger the mixing of two products, to trigger the heating or cooling of said product.

  As more and more distributors incorporate complex technical functions, it is important to have distributor bodies that are adapted to the integration of such technical functions.

DESCRIPTION OF THE FIGURES

  All the figures relate to bodies (1) according to the invention forming pots.

  Figures la to 1 e relate to a body (1) flared side wall (2), while Figures 2a to 2c and 3a to 3b relate to another body (1) with a side wall (2) right.

  Figure 1a is a section of the body (1) in a vertical plane comprising the axial direction (10) of said body.

Figure 1b is a side view.

Figure 1c is a view from above.

  Figure 1d is an enlarged view of the upper right portion surrounded by circular dotted lines of Figure 1a.

  Figure 1 e is an enlarged view of the lower part of Figure la, part surrounded by dotted lines in the form of a rectangle.

  Figure 2a shows on its left side, an axial section similar to that of Figure 1a, and on its right side, a side view similar to that of Figure lb. Figure 2b is a view from above.

  Figure 2c is similar to Figure 2a and shows a distributor (6) comprising said body (1), with a cover (4) and an auxiliary part (5) inside said body. Figures 3a and 3b are partial enlarged views of the left portion of Figure 2c.

  Figure 3a shows the upper part of the distributor (6) with its cover (4) and Figure 3b shows the bottom (3).

  DETAILED DESCRIPTION OF THE INVENTION

  According to the invention, said plastic material may comprise a mixture of two plastics materials, a first plastic material called high flexural modulus, bending modulus greater than 350 MPa, and a second plastic material called low flexural modulus, flexural modulus less than 350 MPa.

  Said first plastic material may be at a weight content ranging from 40% to 80%, said second plastic being at a content ranging respectively from 60% to 20%. Said first plastic material may be a thermoplastic material typically selected from: PE, PP, and wherein said second plastic material is an elastomer, typically SEBS.

  According to one embodiment of the invention illustrated in FIGS. 1 a to the, said lateral wall (2) of said body (1) may be a flared wall (2 ').

  In this body: a) said side wall (2) can form, from top to bottom from said upper flange 30 to said bottom, a succession of several circular portions of walls, typically 3 walls Pt (21), P2 (22 ) and P3 (23), having outside diameters DI, D2 and D3 decreasing, each of said diameters being taken at the upper part of said corresponding wall (21, 22, 23), b) said succession of several circular portions of walls, typically 3 walls P1 (21), P2 (22) and P3 (23), may have decreasing mean thicknesses E1, E2 and E3, c) said bottom (3) may have a diameter D4 <D3 and a thickness E4 at least 1.5.E3, d) said thickness E3 can be chosen so that said relatively thin wall portion P3 (23) forms said flexible wall portion (11) forming said hinge and that thus said bottom (3) forms said movable portion (12).

  Similarly, in said body (1): a) D2 / D1 can be between 0.80 and 0.92 b) D2 / D3 can be between 0.6 and 0.8, c) D3 / D4 can be between 0.5 and 0.7, and said side wall (2) may have an outer profile typically corresponding to a parabola segment, as shown in Figures la and lb. Said body (1) can typically have a height H ranging from 30 mm to 60 mm, and a larger diameter D1 ranging from 40 mm to 70 mm.

  In addition, in said body (1); a) said average thickness E1 of the wall P1 or upper wall may be between 5 mm and 2 mm, b) said average thickness E2 of the wall P2 or median wall may be between 1 mm and 2 mm, c) said thickness average E3 of the wall P3 or lower wall may be between 0.3 mm and 1.

  According to the invention, and as it appears in FIG. 1c, said walls P2 (22) and P3 (23) may have a thickness E2 and E3 that is typically constant, said walls P2 (22) and P3 (23) being connected by a intermediate wall P23 (24) of a thickness E23 variable over its height H23, said height H23 being between 2 and 5 mm.

  As shown in FIG. 1a, said PI wall (21) or upper wall may have a constant inner diameter throughout its height HI, said height HI ranging from 12 mm to 30 mm, and preferably from 15 mm to 25 mm. mm.

  As can be seen in FIG. 1d, said upper flange (20) or said PI wall (21) at its upper part may have latching means (25) intended to cooperate with an auxiliary part (5), said part auxiliary (5) typically obstructing said opening (201) and forming means for applying said product.

  In Figure 1 d, this means is a circular groove which allows the snap of an insert obstructing said opening (201) and can form an application means for said product.

  As illustrated in FIG. 1a, said wall P3 (23) or lower wall may have, with respect to said typically planar bottom (3), an average angular slope a3 ranging from 20 to 40, said wall P2 having a mean angular slope a2 such that a3 = a2 + Aa with Aa ranging from 10 to 30.

  According to another embodiment of the invention illustrated in FIGS. 2a to 3b, said lateral wall (2) can form a straight (2 "), typically cylindrical, skirt connected to said bottom (3), said bottom (3) comprising said portion flexible wall (11) and said movable portion (12).

  Said right skirt (2 ") may be of average thickness E1 between 5 mm and 2 mm, and said bottom (3) may comprise: a) a peripheral portion FI (30) having said average thickness EI, b) a portion median F2 (31) of thickness E2 between 0.3 mm and 1 forming flexible wall portion (11), c) a central portion F3 (32) of thickness E3 of between 1 mm and 2 mm, said portion central F3 (32) forming said movable portion (12) of said bottom.

  Said medial portion F2 (31) may form or comprise a re-entrant outer ring (310) with a slope ranging from 30 to 70 and an outgoing inner ring (311) with a slope 132 ranging from -10 to 50.

  Preferably, and as illustrated in FIG. 3b, in the absence of said constraint or manual pressure (7), said central portion F3 (31) can be shifted internally relative to said peripheral portion F1 by a height h ranging from 2 to 5 mm, in order to avoid or limit the risk of an involuntary stress on said central portion 1 o F3 (31).

  As also illustrated in Figure 3b, said right skirt (2 ") and said bottom (3) may have a connecting radius of curvature R ranging from 5 to 15 mm, and typically from 6 mm to 10 mm.

  According to the invention, said right skirt (2 ") may have a cross section, taken perpendicular to said axial, round or oval or square or rectangular direction, because the shape of the skirt may be arbitrary.

  Whatever the mode of the invention, said body (1) may be a molded part, typically formed by injection of said plastic material.

  Said axial displacement, when said stress or manual pressure (7) is exerted on said movable part (12), pushes it inside said body (1), can be an axial stroke ranging from 2 mm to 10 mm, and typically from 3 to 6 mm.

  This axial stroke is chosen according to the technical functions incorporated in said body which require said auxiliary part (6).

  Another object of the invention is a product dispenser comprising a body (1) according to the invention, a means for closing (4) said opening and typically an auxiliary part (5) whose operation involves said axial displacement.

EXAMPLES OF REALIZATION

  Figures 1a to the constitute a first embodiment of a body (1) according to the invention.

  In this example, said body (1) is a flared wall pot (2 ') which may be intended to receive a pasty product or a solid product in the divided state, such as a makeup powder. The opening (201) of this body can be obstructed by an auxiliary part (5) (not shown in Figures 1a and 1d) to ensure application of the product. In this example, a portion of the side wall (2,2 ') forms said flexible wall portion (11), while said bottom (3) forms said movable portion (12).

  This pot can be closed by a cover with an internal thread intended to cooperate with the thread (200) of the upper flange (20) of the side wall (2) of said body (1).

  Figures 2a to 3b is a second embodiment of a body (1) according to the invention.

  In this example, said body (1) is a right skirt pot (2 ") and said bottom comprises said flexible wall portion (11) and said movable portion (12).

  Said auxiliary piece (5) is a device with a metal wall whose axial displacement will trigger a physical process such as, for example, the mixing of two products contained in said body, separately until intervene said manual pressure.

  BENEFITS OF THE INVENTION The invention makes it possible to have a body made of plastic material, some of which forms a sort of sealed entrance door allowing, reliably and repeatedly, to act on the contents of said body. , typically with the aid of an auxiliary part, and this for the typical purpose either to propel the product to the opening of the body, for its application, or to mix several products.

  But the invention is not limited to the realization of these two only technical effects.

  Indeed, more and more packaging incorporates complex technical functions, whether to ensure the traceability of products, the inviolability of containers, their certain identification, protection against theft, etc. which may be passive, or which may possibly be activated at a given moment in the life of the product, knowing that such activation may require a means as elementary as axial displacement, insofar as electromagnetic signals or waves may be stopped by metal walls of some packaging means.

LIST OF REPERES

  Manifold body 1 Axial direction 10 Flexible wall portion 11 Movable part 12 Side wall of 1 2 Flared wall 2 'Straight skirt 2 "Upper flange 20 External thread 200 Opening 201 PI portion of 2 21 Portion P2 of 2 22 Portion P3 of 2 23 Intermediate wall P23 24 Snap-fitting 25 Bottom of 1 3 Peripheral part FI 30 Middle part F2 31 External ring 310 Inner ring 311 Io Central part F3 32 Cover 4 Bottom edge 40 Internal thread 400 Seal 41 Auxiliary part 5 Distributor = 1+ 4 + 5 6 Manual axial pressure 7

Claims (21)

  Hollow body (1) of a dispenser (6) of a product, typically a cosmetic product, typically having a symmetry of revolution in an axial direction (10) of said body, comprising a side wall (2) and a lifting base (3), said side wall (2) being provided with an upper flange (20), typically provided with an external thread (200), forming an opening (201), characterized in that: a) said body (1) comprises a portion (12), forming all or part of said bottom (3), movable axially 1o under axial axial stress exerted on said portion (12), thanks to a flexible wall portion (11) of said side wall (2) or said bottom (3) surrounding said movable portion (12) and of thickness chosen so that said flexible wall has a resilient bending and forms a hinge, b) said flexible wall portion (11 ) is an annular portion inscribed in a circle 15 typically centered on said axial direction ale (10) of said body (1), c) said body (1) is formed of a plastic material adapted to have said resilient bending for said flexible wall portion (11), so that said axial axial pressure or pressure (7) exerted on said movable part (12) pushes it inside said body (1) according to an axial displacement, said movable part (12) emerging from said body (1) and typically returning to its original axial position as soon as ceases said manual constraint (7).   2. The dispenser body according to claim 1 wherein said plastic material comprises a mixture of two plastics, a first plastic material called high flexural modulus, flexural modulus greater than 350 MPa, and a second plastic material called low flexural modulus, flexural modulus less than 350 MPa.   The dispenser body according to claim 2 wherein said first plastic material is at a weight content of from 40% to 80%, said second plastic being at a level of 60% to 20%, respectively.   4. Dispenser body according to any one of claims 2 to 3 wherein said first plastic material is a thermoplastic material typically selected from: PE, PP, and wherein said second plastic material is an elastomer, typically SEBS.   The distributor body according to any one of claims 1 to 4 in said side wall (2) is a flared wall (2 '), and wherein: a) said side wall (2) forms, from top to bottom from said flange higher up to said bottom, a succession of several circular portions of walls, typically 3 walls P1 (21), P2 (22) and P3 (23), having outer diameters D1, D2 and D3 decreasing, each of said diameters being taken at the upper part of said corresponding wall (21, 22, 23), b) said succession of several circular wall portions, typically of 3 walls P1 (21), P2 (22) and P3 (23), has average thicknesses E1, E2 and E3 decreasing, c) said bottom (3) has a diameter D4 <D3 and a thickness E4 at least 1.5.E3, d) said thickness E3 is chosen so that said wall portion P3 (23) of relatively small thickness forms said flexible wall portion (11) forming said 2 0 hinge and that said bottom (3) forms said movable portion (12).   6. Dispenser body according to claim 5 wherein: a) D2 / D1 is between 0.80 and 0.92 b) D2 / D3 is between 0.6 and 0.8, c) D3 / D4 is included between 0.5 and 0.7, and wherein said side wall (2) has an outer profile typically corresponding to a parabola segment.   7. Dispenser body according to any one of claims 5 to 6 wherein said body (1) has a height H ranging from 30 mm to 60 mm, and a larger diameter D 1 ranging from 40 mm to 70 mm.   8. Distributor body according to any one of claims 5 to 7 wherein: a) said average thickness E1 of the wall P1 or upper wall is between 5 mm and 2 mm, b) said average thickness E2 of the wall P2 or wall median is between 1 mm and 2 mm, c) said average thickness E3 of the wall P3 or lower wall is between 0.3 mm and 1.   9. Dispenser body according to any one of claims 5 to 8 wherein said walls P2 (22) and P3 (23) have a thickness E2 and E3 typically constant, said walls P2 (22) and P3 (23) being connected by a intermediate wall P23 (24) of a thickness E23 variable over its height H23, said height H23 being between 2 and 5 mm.   10. Dispenser body according to any one of claims 5 to 9 wherein said wall P1 (21) or upper wall has a constant inner diameter over its entire height H1, said height H1 ranging from 12 mm to 30 mm, and preferably from 15 mm to 25 mm.   11. Dispenser body according to any one of claims 5 to 10 wherein said upper flange (20) or said wall P1 (21) at its upper part has a latching means (25) for cooperating with an auxiliary part (5). ), said auxiliary piece (5) typically obstructing said opening (201) and forming means for applying said product.   12. Distributor body according to any one of claims 5 to 11 wherein said wall P3 (23) or lower wall has, relative to said bottom (3) typically plane, an average angular slope a3 ranging from 20 to 40, said wall P2 having an average angular slope 0 (2 such that a3 = a2 + Aa with 4a ranging from 10 to 30.   13. Distributor body according to any one of claims 1 to 4 wherein said side wall (2) forms a straight skirt (2 "), typically cylindrical, connected to said bottom (3), said bottom (3) comprising said wall portion flexible (11) and said movable portion (12).   14. The dispenser body according to claim 13 wherein said right skirt (2 ") is of average thickness E1 of between 5 mm and 2 mm, and said bottom (3) comprises: a) a peripheral portion F1 (30) having said average thickness E1, b) a median portion F2 (31) of thickness E2 between 0.3 mm and 1 forming a portion 1 o of flexible wall (11), c) a central portion F3 (32) of thickness E3 between 1 mm and 2 mm, said central portion F3 (32) forming said movable portion (12) of said bottom.   The distributor body according to claim 14 wherein said middle portion F2 (31) forms or comprises an outer ring gear (310) with a slope 131 ranging from 30 to 70 and an inner ring (311) outgoing with a slope 132 13 from - 10 to 50.   16. Distributor body according to any one of claims 14 to 15 wherein, in the absence of said stress or manual pressure (7), said central portion F3 (31) is shifted internally relative to said peripheral portion F1 of a height h ranging from 2 to 5 mm, to avoid or limit the risk of an involuntary stress on said central portion F3 (31).   17. Distributor body according to any one of claims 12 to 16 wherein said right skirt (2 ") and said bottom (3) have a connecting radius of curvature R ranging from 5 to 15 mm, and typically from 6 mm to 10 mm. mm.   18. A dispenser body according to any one of claims 12 to 17 wherein said right skirt (2 ") has a cross section, taken perpendicular to said axial, round or oval or square or rectangular direction.   The dispenser body according to any one of claims 1 to 18 wherein said body (1) is a molded part, typically formed by injection of said plastic material.   20. Distributor body according to any one of claims 1 to 19 wherein said axial displacement, when said stress or manual pressure (7) is exerted on said movable part (12), pushes it inside said body (1), is an axial stroke ranging from 2 mm to 10 mm, and typically from 3 to 6 mm.   21. Product dispenser comprising a body (1) according to any one of claims 1 to 20, a closure means (4) of said opening and typically an auxiliary part (5) whose operation involves said axial displacement.