CN109475217B

CN109475217B - Fluid product extraction and coating device

Info

Publication number: CN109475217B
Application number: CN201780045303.7A
Authority: CN
Inventors: X·布拉伊姆
Original assignee: Aptar France SAS
Current assignee: Aptar France SAS
Priority date: 2016-07-26
Filing date: 2017-07-24
Publication date: 2021-08-24
Anticipated expiration: 2037-07-24
Also published as: EP3490406B1; ES2799174T3; CN109475217A; WO2018020121A1; BR112018076596A2; FR3054415B1; FR3054415A1; BR112018076596B1; EP3490406A1

Abstract

The device is provided with: a base member (2) mounted on the container (1) and having a dip tube (24) and a funnel (21) in which an injection hole (261) connected to the dip tube (24) is formed; and a detachable mechanism (3) detachably mounted on the base member (2) and having a pipe member (33) and an applicator (35) adapted to hold a dose of the fluid product from the filling opening by suction generated by sliding the pipe member (33) against the piston seal, the applicator having an extraction and application space (35) formed in the pipe member (33), characterized in that the bucket cup (21) has a drain valve (221,222,5) that communicates the inside of the bucket cup (21) with the container (1) so as to force the fluid product contained in the bucket cup (21) toward the container when the detachable mechanism (3) is remounted on the base member (2).

Description

Fluid product extraction and coating device

Technical Field

The invention relates to a device having a base part and a detachable mechanism detachably mounted on the base part. The detachable mechanism slides axially in the basic part sealingly over a certain axial travel. The invention is used in the fields of cosmetics, cosmetics or medicine. The base member may be connected to the fluid product container and the detachable mechanism may support the applicator.

Background

In the field of cosmetics, it is known from WO2013/017803 to propose a dispenser for application with a removable mechanism provided with an applicator suitable for being extracted axially in a sealed sliding manner from a base element having a cup with a bottom opening provided with an injection hole connected to a dip tube. More precisely, the disassemblable mechanism is unscrewed from the basic part, so as to perform an axial sliding movement: after unscrewing, the detachable mechanism can be completely withdrawn, separated from the base unit, enabling the applicator to contact a suitable surface, such as the skin. When unscrewed, a negative pressure is created between the base element and the removable mechanism, so that the fluid product stored in the container is sucked through the dip tube and the filling opening, filling the applicator.

On the other hand, in this document WO2013/017803 it can be found that the applicator is formed by a tube, which defines an extraction and application space inside. The tube is surrounded by a piston which slides within a sliding sleeve formed by the upper part of the bowl. Thus, the priming of the refillable applicator is created by the piston sliding within the upper portion of the bucket cup. It does not have any sliding contact with the tube forming the applicator.

Another problem with the dispenser of this document WO2013/017803 is that the bucket cup is partially filled with the fluid product once the applicator is withdrawn. This is clearly shown in figure 6 of this document. When the applicator is installed in the funnel, the contents of the funnel and the dip tube in the container are pushed through the dip tube. Thus, when the dip tube is emptied of fluid product and next withdrawn from the applicator, first, the dip tube must be filled.

The present invention aims to remedy the aforementioned drawbacks of the prior art by proposing a coating dispenser as described in WO2013/017803, in which, however, the content of the cup is discharged in another way, so that the dip tube is filled or at least partially filled with fluid product.

Disclosure of Invention

To this end, the invention proposes a fluid product pick-up and application device comprising:

a base part which is mounted on the fluid product container and has a dip tube and a funnel cup, the filling opening formed in the funnel cup being connected to the dip tube, the funnel cup being provided with a piston, and

a removable mechanism removably mounted on the base part along a sliding axis, the removable mechanism having a gripping appendage, a tube adapted to slide axially along the sliding axis sealingly against the piston over a sealing axial stroke, and an applicator adapted to hold a dose of fluid product from the injection orifice by suction generated by the sliding of the tube sealingly against the piston, the applicator having an extraction coating space formed in the tube into which the fluid product is injected via the dip tube and the injection orifice,

the bucket is characterized in that the bucket cup is provided with a discharge valve which enables the interior of the bucket cup to be selectively communicated with the fluid product container so as to enable the fluid product contained in the bucket cup to be pressed towards the container when the detachable mechanism is installed on the basic component.

Thus, upon contact again between the tube and the piston when the detachable mechanism is mounted on the base member, the fluid product contained in the cup is pressurized and can be returned directly to the container via the discharge valve.

Advantageously, the tapping valve has at least one through hole through the wall thickness of the bucket cup, said at least one through hole being delimited by the valve seat, the tapping valve further having a movable valve mechanism, which is arranged outside the bucket cup and which is adapted to close the through hole when an underpressure is formed in the bucket cup.

According to an advantageous feature, in order to ensure that the funnel is discharged without emptying the dip tube, the discharge valve is opened at an overpressure threshold in the funnel which is lower than the overpressure threshold required for pumping the contents of the funnel through the dip tube. For example, a thin dip tube (less than 1 mm outer diameter) may be used to increase pressure loss. The movable valve mechanism need not be sealingly supported on its base in the inoperative state, so that it opens even before an overpressure is built up in the bucket cup. Instead, as soon as a negative pressure is built up in the cup, the movable valve means immediately rests against its valve seat, sealing off the one or more passage holes.

Advantageously, the bucket cup has a bottom, preferably a flat bottom, perpendicular to the sliding axis, on which the discharge valve is located. The through holes may extend axially, perpendicularly through the flat bottom.

Alternatively, the bottom may be penetrated by a conduit which connects the dip tube to the injection port. The conduit may be formed by a scoop or by a dip tube. The injection hole is formed at an upper free end of the pipe.

According to a practical embodiment, the bleed valve has a plurality of through holes arranged around the pipe.

Advantageously, the base part has a pipe support, into which one end of the dip tube engages, around which the movable valve mechanism is fixedly mounted, the pipe support preferably forming a stationary profile. In other embodiments, without a tube holder, the dip tube is integral with the scoop: thus, the movable valve mechanism is fixedly mounted around the upper portion of the dip tube.

Advantageously, the movable valve mechanism has a fixed heel in fixed engagement with the pipe support and flexible petals extending over the at least one passage hole to selectively close the passage hole.

According to another preferred embodiment of the present invention, the injection hole is located inside the extraction and coating space when the detachable mechanism is mounted on the base member. In other embodiments, the injection hole is located outside the extraction coating space when the detachable mechanism is mounted on the base member.

The idea of the invention is that the contents of the bucket cup in the container are discharged through a one-way valve preferably arranged at the bottom of the bucket cup when the detachable mechanism is mounted.

Drawings

The invention will now be described in detail with reference to the attached drawings, given as non-limiting examples, of three embodiments of the invention.

The attached drawings are as follows:

figure 1 is a vertical transverse cross-section of a dispenser according to a first embodiment of the invention,

figure 2 is an enlarged view of detail a in figure 1,

fig. 3 is similar to fig. 2, showing a second embodiment of the invention,

FIG. 4 is similar to FIGS. 2 and 3 and shows a third embodiment of the invention, an

Figures 5 and 6 are perspective views showing two embodiments of the passage of the bottom of the bucket through the hole.

Detailed Description

First, the construction and operation of a coating dispenser for fluid products, which can be used as a basic dispenser for containing the discharge valve of the present invention, will be described in detail with reference to fig. 1. The following three embodiments of the invention only detail the differences from the basic coating dispenser.

First of all, the dispenser has a container 1 of fluid product, which is only partially shown. In fact, fig. 1 shows only the upper part of the container 1, which forms the completely conventional neck 11, with an external reinforcement for the connection. The container 1 of the fluid product can be of any type, made of any material, as the container is not a critical element of the invention.

In addition to the container 1, the dispenser has two other components, namely a base part 2, which base part 2 is fixedly mounted on the container 1, and a detachable mechanism 3, which detachable mechanism 3 is detachably mounted on the base part 2.

The base part 2 has a connecting piece, which may be an open or non-open skirt 20, which fits over the neck 11 of the container 1. This is a completely conventional design for stationary dispensing mechanisms in the cosmetic, cosmetic or pharmaceutical field. The securement of the skirt 20 around the neck 11 may be used to compress the neck seal 4 against the upper edge of the neck 11. The base part 2 also has a funnel cup 21 which extends within the neck 11 of the container. The bowl 21 forms a bottom 22 at its lower end, which is penetrated by a conduit 23, which conduit 23 is formed at the junction between a pipe rack 25 and a draft tube 26. The tube holder 25 is used to support a dip tube 24 which extends within the container 1 to near its bottom. The upper end of dip tube 24 is forcibly engaged in tube holder 25. The drain tube 26 extends inside the funnel cup 21 and forms an injection hole 261 at an upper free end. The bucket cup 21 has a piston 27 formed with a piston lip. The piston 27 is an insert which is arranged in the cup 21 and is held, for example, by a lock. It is also possible to determine to manufacture the piston 27 by composite moulding or double injection moulding. The technique of retaining the piston 27 in the bucket cup 21 is not critical to the invention. Furthermore, the basic part 2 forms a sleeve, which sleeve forms the internally threaded surface 28. Optionally, the base part 2 may have an outer envelope ring 29, which optionally participates in keeping the skirt 20 around the neck 11.

The detachable mechanism 3 has a gripping appendage 31 that can be gripped by the fingers of a user. The detachable means 3 is formed with an external threaded surface 32 on the inside, adapted to cooperate with the internal threaded surface 28 of the basic part 2. The detachable means 3 also has a tubular member 33, the tubular member 33 being substantially cylindrical, defining inside it an extraction and coating space 35 in which the drainage tube 26 and the injection hole 261 are positioned, as shown in fig. 1. In fact, we see that this space 35 is open at its lower end and closed at its upper end to define an blind space. The opening of the space 35 is located near the bottom 22 of the bucket cup 21. It is also found that the tube 33 is in sealing contact with the lip of the piston 27.

According to the arrangement shown in fig. 1, the user can grip the gripping appendage 31 and turn it so as to unscrew the detachable mechanism 3 from the base element 2. Thus, the pipe member 33 slides hermetically in the piston 27, and a negative pressure is formed in the extraction and application space 35. This negative pressure creates a suction force that draws the fluid product from the container 1 through the dip tube 24 and the fill hole 261. Thus, the fluid product is injected into the extraction coating space 35. As long as the tubular member 33 is in sealing sliding contact inside the piston 27, the fluid product continues to be injected until the space 35 is filled or even exceeded. Thus, an axial sealing sliding stroke can be defined between the piston 27 and the pipe member 33. With the design shown in fig. 1, the axial sliding stroke is continuous, so that a very large amount of fluid product is sucked and injected into the extraction space 35. This quantity is such that it will even fill a part of the cup 21 once the detachable mechanism 3 is completely extracted from the base part 1. Thus, once the removable organ 3 is extracted, the cup 21 still contains the fluid product.

A first embodiment of the invention will now be described with reference to fig. 2, which is also shown in fig. 1. As shown in fig. 2, the bottom 22 is provided with at least two through holes 221 which pass through the wall thickness of the bottom. These through holes 221 are axially oriented, parallel to the sliding direction of the detachable mechanism 3. For example, a cylindrical passage hole 221 may be provided as shown in fig. 5, or a curved elliptical passage hole may be provided as shown in fig. 6. In both embodiments, the through holes 221 extend around the pipe rack 25 and the pipe 23. These holes 221 establish direct communication between the interior of the bucket cup 21 and the interior of the container 1, without passing through the dip tube 24. The outer wall of the bottom 22 surrounding the passage hole 221 forms a valve seat 222.

It can also be seen on fig. 2 that the movable valve mechanism 5 is arranged around the pipe support 25 to extend against the valve seat 222, closing off the passage hole 221. Here, the movable valve mechanism 5 is a flat annular seal ring which is fixedly held at its inner annular edge; while the remaining portion of the flat annular sealing ring is movable, by elastic deformation, away from the valve seat 222. More precisely, the inner annular edge forms a fixed heel 51, held around pipe support 25 between bottom 22 and a fixed bead 251 formed at the outer wall of pipe support 25. It will be understood that the movable valve means 5 will abut against the valve seat 222 when a negative pressure is created in the cup, as is the case when the detachable means 3 is extracted from the base part 2. Therefore, the passage hole 221 is sealed closed by the movable valve mechanism 5. Instead, once an overpressure is created in the bucket cup 21, which is the case when the detachable mechanism 3 is remounted on the base part 2, the movable valve mechanism 5 is pushed away from the valve seat 222, thus establishing a direct passage between the bucket cup 21 and the container 1. The contents of the bucket cup 21 are thus discharged in the container via a discharge valve, formed by the valve seat 222 and the movable valve mechanism 5, which in the open state is limited by the pressurized fluid product in the bucket cup 21.

The drain valve is formed outside the bowl 21 and inside the container 1. The release valve is preferably opened in the bowl at an overpressure threshold that is less than the overpressure threshold required to force the contents of the bowl through the dip tube. Thus, the funnel can be emptied of its contents through the discharge valve, leaving the dip tube filled with the fluid product. In other words, the removable mechanism 3 can be remounted on the base member 2 without emptying the dip tube 24, so that the next time the removable mechanism 3 is withdrawn, the fluid product is immediately injected into the space 35. In principle, the movable valve means 5 need not even be supported sealingly on its valve seat 222 in the inoperative state, so that it opens even before an overpressure has built up in the cup 21. Conversely, when a negative pressure is generated in the bucket cup 21, the movable valve mechanism 5 immediately contacts the valve seat 222 thereof, and seals and closes the passage hole 221. To increase the pressure loss through the dip tube 24, its inner diameter may be reduced. A one-way valve may also be provided upstream or downstream of the dip tube to prevent any communication of the fluid product from the funnel 21 to the container 1. Such a valve may be installed at the pipe 23 or the draft tube 26.

Fig. 3 shows a second embodiment of the bleed valve of the present invention. The bottom 22 of the bucket cup 21 is the same as or similar to the bottom of the first embodiment shown in fig. 2. The difference lies in the way in which the movable valve means 5' are fixed, the movable valve means 5' having a fixed heel 51' which is circular and is locked in a fixed groove portion 252 of the corresponding shape of the pipe frame 25. The upper edge of the fixing groove portion 252 extends in extension of the valve seat 222.

Fig. 4 shows a third embodiment of the purge valve of the present invention. The bottom 22 of the bucket cup 21 is the same as or similar to the bottom of the first embodiment shown in fig. 2. However, it should be noted that the draft tube 26 is not provided so that the injection hole 261 is located outside the extraction coating space 35. It can be said that the injection hole 261 is located immediately outside the space 35. It may also be determined that the hole 261 is disposed immediately within the space 35. This configuration is more suitable for less thick fluid products such as perfumes, whereas the configuration shown in fig. 2 and 3 employs drains that extend far into the space 35, more suitable for thicker fluid products such as creams or serum.

On the other hand, the embodiment shown in fig. 4 is also different from the foregoing embodiments in that the movable valve mechanism 5 "has a fixed heel 51" and the fixed heel 51 "is a housing, and the pipe frame 25 is clamped at a constant height. The advantage of this design is that the tube holder can be a conventional tube holder without reinforcing ribs or retaining grooves.

Regardless of the design of the

movable valve mechanism

5, 5', 5", it has a fixed

heel

51, 51', 51" connected to the pipe frame 25, and a flexible petal 52 which selectively closes the passage hole 221 in response to the pressure in the bucket cup 21.

A movable valve mechanism 5; 5'; 5 "may be mechanically attached to the tube support 25, but it may also be bi-injected from a chemically incompatible material, with mechanical properties but without chemical bonds, to ensure detachment of the flexible petals 52.

According to the invention, the dip tube 24 is partially, preferably completely, filled with fluid product, so that filling of the extraction and application space 35 begins as soon as it has been sealingly slid from the detachable mechanism 3 out of the base part 2. The through hole 222 is easily formed because it has an axial direction of molding/demolding. And a sealing ring is added to be used as a movable valve mechanism, so that the operation is easy. The drain valve is preferably, but not restrictively, arranged at the bottom 22 of the bucket cup 21.

Claims

1. An extraction coating apparatus for extraction coating a fluid product, comprising:

-a base part (2) mounted on the fluid product container (1), the base part (2) having a dip tube (24) and a funnel (21) with a filling opening (261) formed therein connected to the dip tube (24), the funnel (21) being provided with a piston (27), and

-a removable mechanism (3) removably mounted on the base element (2) along a sliding axis, the removable mechanism (3) having a gripping appendage (31), a tube (33) adapted to slide axially along the sliding axis in a sealing manner against the piston (27) over a sealing axial stroke, and an applicator (35) adapted to hold a dose of fluid product coming from the injection orifice (261) by means of a suction force generated by the sealing sliding of the tube (33) against the piston (27), the applicator having an extraction and application space (35) formed in the tube (33) into which the fluid product is injected via the dip tube (24) and the injection orifice (261),

characterized in that the bucket cup (21) has a discharge valve (221,222, 5; 5') which selectively connects the interior of the bucket cup (21) to the fluid product container (1) so as to force the fluid product contained in the bucket cup (21) towards the fluid product container (1) when the detachable mechanism (3) is remounted on the base part (2).

2. The extraction coating device according to claim 1, characterized in that the drain valve (221,222, 5; 5 ') has at least one through hole (221) which passes through the wall thickness of the bucket cup (21), the at least one through hole (221) being bordered by a valve seat (222), the drain valve (221,222, 5; 5 ') further having a movable valve mechanism (5; 5 ') which is arranged outside the bucket cup (21) and which is adapted to close the through hole (221) when an underpressure is formed in the bucket cup (21).

3. Extraction coating device according to claim 1 or 2, characterized in that the relief valve (221,222, 5; 5') opens at an overpressure threshold in the funnel cup (21) which is smaller than the overpressure threshold required for pumping the contents of the funnel cup (21) through the dip tube (24).

4. The extraction coating device according to claim 1, characterized in that the bucket cup (21) has a bottom (22) at which the bleed valve (221,222, 5; 5') is located.

5. The extractor coating device according to claim 4, characterized in that the bottom (22) is crossed by a duct (23) which connects the dip tube (24) to the injection orifice (261).

6. The extraction coating device according to claim 5, characterized in that the bleed valve (221,222, 5; 5') has a plurality of through holes (221) arranged around the conduit (23).

7. The extractor coating device according to claim 2, characterized in that the base part (2) has a pipe frame (25) in which one end of the dip tube (24) is engaged, the movable valve mechanism (5; 5') being fixedly mounted around the pipe frame (25), the pipe frame forming the fixed profile (251; 252).

8. The extraction and coating device according to claim 7, characterized in that the movable valve mechanism (5; 5 ') has a fixed heel (51; 51') in fixed engagement with the pipe support (25) and flexible petals (52) extending over said at least one passage hole (221) to selectively close the passage hole.

9. The extraction coating device according to claim 1, wherein the movable valve means (5; 5') are made by double injection molding from chemically incompatible materials.

10. The extraction coating device according to claim 1, wherein the injection hole (261) is located inside the extraction coating space (35) when the detachable mechanism (3) is mounted on the base member (2).

11. The extraction coating device according to claim 1, wherein the injection hole (261) is located outside the extraction coating space (35) when the detachable mechanism (3) is mounted on the base member (2).