FR2879567A1 - SYNTHETIC BOTTLE EQUIPPED WITH A PUMP - Google Patents

Abstract

The dispenser has a hollow body (2) containing liquid (31), and a hoop (20) with a socket (21) fit in a spray pump (11). A neck (9) has a socket (10) whose end is surrounded by a cylindrical crown (13) in which vent holes (14) are arranged. Air and the liquid expelled by the holes are retained in a recuperation chamber delimited by an inner and outer skirt (24, 23) of the hoop and the neck, during insertion of the pump in the body.

Description

The present invention relates to a bottle made of synthetic material.

  This type of bottle comprises, in known manner, a body made of thermoplastic material obtained by injection, intended to contain a liquid, in which is housed a movable piston as the liquid of the conditioned liquid is withdrawn, as well as a neck which is also thermoplastic material and obtained by injection.

  The cervix is usually equipped with a pump to vaporize or spray the liquid contained in the body of the bottle.

  When filling the body of this type of flask with a liquid, it is necessary to provide perfectly the quantity of liquid poured into it.

  Indeed, since the filling takes place before the introduction of the pump, it is necessary to provide in the body an empty volume equivalent to the volume of the portion of the pump to be immersed in the liquid.

  If the empty volume is smaller than the volume of the part of the pump intended to be immersed in the liquid, it is possible that a part of the liquid flows outside the body during the installation of the pump in the the neck, resulting in a loss of product and a fouling of the body of the bottle as well as the filling line.

  If the empty volume is greater than the volume of the part of the pump intended to be immersed in the liquid, air is trapped between the body and the neck once the assembly of the bottle is completed.

  This trapped air is then in contact with the liquid present in the body, so it can oxidize and denature it.

  This results in an alteration, for example, of the smell of the liquid when it comes to perfume or its properties when it comes to cosmetic product.

  The present invention therefore aims to remedy these drawbacks.

  The technical problem underlying the invention is the production of a bottle to protect the liquid packaged therein from any risk of oxidation, while avoiding any risk of liquid flow to the outside of the bottle during assembly.

  To this end, the invention relates to a plastic bottle, comprising a hollow body made of synthetic material, open at one end and intended to contain a liquid, a neck of synthetic material in which is mounted in a sealed manner a pump and comprising sealing means in the opening of the hollow body, and a hoop equipped with releasable fastening means on the neck, the volume of the bottle being delimited, on the opposite side to that equipped with the pump, by a piston displaceable towards the pump at and as the collection of the conditioned liquid, characterized in that it comprises means for setting in communication the volume defined by the hollow body with a recovery chamber in the neck, the communication means for purging the the air present in the hollow body during the assembly of the bottle, the recovery chamber being closed and the placing means in communication being obtained ureas tightly when the vial is assembled.

  Thus, during assembly of the pump on the neck, the end of the latter is immersed in the conditioned liquid in the hollow body, creating a rise of the liquid which has the effect of purging the air contained in the hollow body through the means of setting in communication. The communication means being closed tightly when the bottle is assembled, the air expelled from the body can not return into the latter, thus avoiding alteration of the liquid by oxidation.

  In addition, if a small amount of liquid is expelled through the communication means, it is retained in the recovery chamber. The recovery chamber being sealed when the bottle is assembled, the expelled liquid is trapped in the recovery chamber. It can not flow outside the bottle, thus avoiding a fouling of the body and the filling line.

  Advantageously, the neck comprises a socket in which is mounted in sealed manner the pump, whose end, located on the side of the hollow body, is surrounded by a cylindrical ring in which are provided the means of communication.

  According to one embodiment of the invention, the communication means are vent holes.

  Advantageously, the cylindrical crown of the neck has a peripheral rim.

  According to one embodiment of the invention, the hoop intended to be fastened to the neck comprises an inner skirt whose end is intended to sealingly close the communication means formed in the cylindrical crown of the neck.

  Advantageously, the end of the inner skirt of the hoop comprises an annular rib intended to cooperate with a groove of complementary shape formed in the cylindrical crown of the neck.

  According to one embodiment of the invention, the communication means consist of a purge ring sealingly mounted on the inner face of the neck, the side of the hollow body.

  Advantageously, the purge ring comprises an annular ring-shaped portion whose inner surface is extended, on the side of the hoop, by a rigid tubular portion intended to bear against the pump, the tubular portion having vent holes for to be sealed by the pump when the bottle is assembled.

  According to one embodiment of the invention, the vent holes are formed on the edge of the tubular portion.

  Advantageously, the purge ring comprises an annular ring-shaped portion whose inner surface is extended, on the side of the hoop, by a flexible frustoconical portion intended to be kept in sealed contact with the pump by an elastic restoring force and capable of let the passage to the air, under the effect of an overpressure created in the hollow body.

  According to one embodiment of the invention, the sealing means in the opening of the hollow body provided on the neck are made by welding.

  According to another embodiment of the invention, the sealing means in the opening of the hollow body provided on the neck are made by clipping.

  In any case the invention will be better understood from the description which follows, with reference to the indexed schematic drawing showing, by way of non-limiting examples, several embodiments of this plastic bottle.

  Figure 1 is a longitudinal sectional view of a first embodiment of a bottle according to the invention before mounting the pump.

  Figure 2 is a partial view in longitudinal section of the bottle of Figure 1 during assembly of the pump.

  Figure 3 in a partial view in partial longitudinal section in assembled position.

  Figure 4 is a partial longitudinal sectional view of a variant of the bottle of Figure 1 before mounting the pump.

  Figure 5 is a partial longitudinal sectional view in the assembled position.

  Figure 6 is a partial longitudinal sectional view of a second embodiment of a bottle according to the invention in assembled position.

  Figure 7 is a partial view in partial longitudinal section of a third embodiment of a bottle according to the invention before mounting the pump.

  Figure 8 is a partial longitudinal section in the assembled position.

  Figure 9 is a partial view in partial longitudinal section of a fourth embodiment of a bottle according to the invention before mounting the pump.

  Figure 10 is a partial longitudinal section in the assembled position.

  As shown in Figures 1 to 3, the bottle according to the invention comprises a hollow body 2 of generally tubular shape, for example of constant cylindrical section along its entire length. This body 2 comprises a first end closed by a bottom 3, and a second fully open end. The body 2 is delimited laterally by a peripheral wall 4. On the side of its open end, the peripheral wall 4 has, over a certain height, a zone 5 of limited wall thickness obtained by a reduction of material on the outer side. In this zone 5 of thickness reduction, the outer surface has a peripheral rib 6.

  Inside the body 2 is housed a displaceable piston 7, under the effect of a depression created in the body 2, between a position located at the end level of the body 2 closed by the bottom 3 and a position remote from that close to the open end of the body 2. An air intake 8 is provided in the bottom of the body 2 to allow the entry of air into the body 2 during the displacement of the piston 7.

  The bottle according to the invention also comprises a neck 9 made of thermoplastic material and obtained by injection, in the same way as the body 2.

  The neck 9 comprises a sleeve 10 in which is mounted in a sealed manner a spraying pump 11. The sleeve 10 is extended, at its end located on the side of the body 2, by a substantially frustoconical portion 12 of shape complementary to that of the pump 11, intended to ensure the seal between the pump 11 and the sleeve 10.

  The end of the sleeve 10, located on the side of the body 2, is surrounded by a cylindrical ring 13 in which are formed vent holes 14 communicating directly with the inside of the body 2 when the neck 9 is fixed on it. latest.

  The cylindrical crown 13 is extended, on the side of the body 2, by two concentric skirts, respectively an outer skirt 15 and an inner skirt 16. These two skirts 15, 16 delimit a groove 17 serving to fit the open end of the body 2 by its zone 5 of reduced thickness.

  The outer skirt 15 has, in its inner face, a groove 18 in which is intended to engage the rib 6 of the body 2, in the nested position of the open end of the body 2 in the groove 18. As a result, a sealed fastening of the neck 9 on the body 2.

  The inner skirt 16 of the neck 9 also extends on the opposite side to the body 2, thus defining a peripheral rim 19 of the cylindrical ring 13.

  The bottle also comprises a hoop 20 equipped with releasable fixing means on the neck 9. The hoop 20 comprises a sleeve 21 intended to fit into the upper part of the pump 11 so that its end, located on the side of the neck 9, abuts against a cylindrical ring 22 of the pump 11 resting on the end of the sleeve 10 located on the side of the hoop 20, thereby locking the pump 11 between the neck 9 and the hoop 20.

  The sleeve 21 of the hoop 20 is extended, on the side of the body 2, by two concentric skirts, respectively an outer skirt 23 and an inner skirt 24. A rod 25 is formed on the inner face of the outer skirt 23, at the level of its end. A groove 26 of corresponding shape to that of the rod 25 is formed on the outer face of the inner skirt 16 of the neck 9, the rod 25 being intended to fit into the groove 26, these two elements constituting interlocking means to to form an indémontable connection between the neck 9 and the hoop 20.

  A peripheral rib 27 is also formed on the outer face of the bushing 10 of the neck 9, substantially at its end located on the side of the hoop 20, to cooperate with a peripheral groove 28 of complementary shape, formed on the inner face. of the inner skirt 24 of the hoop 20, at a location substantially close to the bushing 21 of the hoop 20. The peripheral ridge 27 and the corresponding groove 28 cooperate in the nested position of the rod 25 in the corresponding groove 26.

  The end of the inner skirt 24 of the hoop 20 is intended to seal the vent holes 14 formed in the cylindrical crown 13 of the neck 9, when the hoop 20 is fitted on the neck 9.

  The end of the inner skirt 24 of the hoop 20 comprises an annular rib 29 intended to cooperate with a groove 30 of complementary shape formed in the cylindrical crown 13 of the neck 9 for a lateral support of the inner skirt 24 to ensure a good sealing of the vent holes 14 when the hoop 20 is assembled with the neck 9.

  In practice, it is possible, after placing the piston 7 at the bottom of the body 2, to fill the body 2 with a liquid 31, using the wide opening therein.

  Then, the neck 9 is mounted on the body 2, as shown in Figure 1, and an assembly constituted by the pump 11 and the collar 20, which is pre-mounted, is engaged on the neck 2. As and when the engagement of the pump-hoop assembly, the end of the pump 11, located on the side of the body 2, is immersed in the liquid 31 contained in the body 2, as shown in Figure 2.

  This results in a compression of the liquid 31 which tends to rise towards the neck 9. The air present between the level of the liquid 31 and the neck 9 is thus expelled through the vent holes 14. A small amount of liquid 31 can also be expelled to ensure a total purge of the air present in the body 2. In this case, the expelled liquid 31 is retained by the inner skirt 16 of the neck 9 which defines a peripheral rim 19 of the cylindrical ring 13 .

  When the band 20 fits over the neck 9, the end of the inner skirt 24 of the band 20 sealingly closes the vent holes 14, the annular rib 29 of the inner skirt 24 now laterally the inner skirt 24 with respect to the cylindrical ring 13, as shown in FIG.

  The air and the liquid 31 expelled through the vent holes 14 are then trapped in a sealed recovery chamber defined by the inner skirts 24 and outer 23 of the band 20 and the neck 9.

  As a result, the liquid 31 contained in the body 2 can no longer be in contact with air, so it can no longer be altered by oxidation.

  In addition, the expelled liquid being retained and trapped in the sealed recovery chamber, it can no longer flow outside the vial.

  According to another method of assembling the bottle, illustrated in FIGS. 4 and 5, once the body 2 has been filled, it is possible to engage thereon a pre-assembled assembly constituted by the neck 9, the pump 11 and the band 20.

  In this case, it is not possible to fix in advance the band 20 on the neck 9 by engaging the rod 25 in the groove 26.

  Indeed, the vent holes 14 would be sealingly closed by the end of the inner skirt 24 of the hoop 20, preventing any purging of the air present in the body 2.

  In this case, it is possible, for example, as shown in Figures 4 and 5, to provide a second peripheral groove 32 on the inner face of the inner skirt 24 of the hoop 20, substantially at its end, in order to cooperate with the peripheral rib 27 formed on the outer face of the sleeve 10 of the neck 9.

  Thus, during the engagement of the neck-pump-hoop assembly on the body 2, in a first part of the movement, the groove 17 defined by the inner skirt 16 and outer 15 of the neck 9 is nested in the zone 5 reduction of thickness of the body 2, and the peripheral groove 18 formed on the inner face of the outer skirt 15 of the neck 9 engages in the corresponding rib 6 formed on the body 2.

  Then, by increasing the pressure exerted on the hoop 20, the second groove 32, formed on the inner face of the inner skirt 24 of the hoop 20, disengages from the rib 27 formed on the outer face of the sleeve 10 of the collar 9. .

  Thus, in a second part of the movement, the hoop 20 and the pump 11 continue their engagement in the neck 9 until the rod 25 provided on the inner face of the outer skirt 23 of the hoop 20 comes engage in the groove 26 provided on the outer face of the inner skirt 16 of the neck 9 and that the rib 27 formed on the outer face of the sleeve 10 of the neck 9 engages with the groove 28 formed on the inner face of the inner skirt 24 .

  According to this method of assembly, a purge of the air present in the body 2 is possible during the second part of the movement of engagement of the assembly consisting of the neck 9, the pump 11 and the hoop 20 on the body 2.

  According to a second embodiment of the invention, shown in Figure 6, the fastening means provided on the neck 9 to seal it in the opening of the body 2 are made by welding.

  In this embodiment, as well as in the embodiments described hereinafter, the same elements bear the same references as before.

  According to this second embodiment, represented in FIG. 6, on the side of its open end, the peripheral wall 4 has, over a certain height, a zone 33 of limited wall thickness obtained by a reduction of material on the inner side .

  The cylindrical ring 13 is extended, on the side of the body 2, by a single skirt 34 having, on its outer face, a peripheral rib 35 intended to engage in the zone 33 for reducing the thickness of the body 2 and abutting against the peripheral wall 4, the neck 9 being then welded to the body 2.

  According to this second embodiment, the filling of the body 2 is carried out by the opening of the sleeve 10 of the neck 9 and the assembly of the bottle is effected by engaging on the body 2 an assembly consisting of the pump 11 and the band 20.

  According to a third embodiment of the invention, represented in FIGS. 7 and 8, the neck 9 comprises a socket 10 whose end, opposite that on the side of the body 2, is extended by a skirt 36 whose face outer end is provided at its end with a peripheral rib 37.

  According to this third embodiment, on the side of its open end, the peripheral wall 4 has, over a certain height, a zone 33 of limited wall thickness, obtained by a reduction of material of the inner side. The peripheral rib 37 formed on the outer face of the skirt 36 of the neck 9 is intended to engage in the zone 33 for reducing the thickness of the body 2 and to abut against the outer wall 4, the neck 9 being then welded to the body 2.

  The skirt 36 of the neck 9 also has, on its inner face, a peripheral rib 38 in which is intended to engage a peripheral groove 39 formed on a purge ring 40.

  The purge ring 40 has a portion in the form of annular ring 41 whose inner surface is extended, on the side of the hoop 20, by a rigid tubular portion 42 intended to bear against the pump 11. The edge of the tubular portion 42 has vent holes 42a to be sealingly closed by the pump 11 when the vial is assembled The inner diameter of the tubular portion 42 is substantially equal to that of the sleeve 10 of the neck 9.

  As before, the hoop 20 comprises a sleeve 21, two concentric skirts, respectively an inner skirt 24 and an outer skirt 23, the outer skirt 23 also being provided, on its inner face, with a rod 25 intended to cooperate with a groove 26 formed on the outer face of the skirt 36 of the neck 9 to form a releasable connection between the neck 9 and the hoop 20.

  In practice, it is possible, after placing the piston 7 at the bottom of the body 2, to fill the latter with a liquid 31, using the opening of the sleeve 10 of the neck 9.

  Then, and as shown in FIG. 7, a pre-assembled assembly constituted by the pump 11 and the hoop 20 is engaged on the neck 9. As the pump-hoop assembly is engaged, the end of the pump 11, located on the side of the body 2, is immersed in the liquid 31 contained in the body 2.

  This results in a compression of the liquid 31 which tends to rise towards the purge ring 40. The air present between the level of the liquid 31 and the purge ring 40 is thus expelled through the vent holes 42a formed in the tubular portion 42 of the purge ring 40, a small amount of liquid 31 can also be expelled through the vent holes 42a.

  When the ferrule 20 fits on the neck 9, the outer wall of the pump 11 sealingly closes the vent holes 42a formed in the tubular portion 42, thereby preventing a return to the body 2 of the air and liquid 31 expelled, as shown in Figure 8.

  The air and the liquid 31 expelled by the vent holes 42a formed in the tubular portion 42 are then trapped in a sealed recovery chamber delimited by the purge ring 40 and the neck 9.

  Thus, the liquid 31 contained in the body 2 is no longer in contact with air and can therefore no longer oxidize.

  According to a fourth embodiment of the invention shown in FIGS. 9 and 10, the purge ring 43 comprises an annular ring-shaped portion 44 whose inner surface is extended, on the hoop side, by a flexible frustoconical portion. 45 intended to be kept in sealed contact with the pump 11 by an elastic restoring force and allowing the passage to air, under the effect of an overpressure created in the body 2.

  Thus, as and when the assembly consisting of the pump 11 and the hoop 20 in the neck 9, the air present between the level of the liquid 31 and the purge ring 43 compresses the frustoconical part. flexible 45 which is deformed and allows the passage of air and a small amount of liquid 31.

  When the band 20 fits on the neck 9, the frustoconical portion 45 returns to its original shape and comes into sealed contact with the pump 11 by an elastic return force. As a result, the air and the liquid 31 expelled from the body 2 are trapped in a sealed recovery chamber delimited by the purge ring 43 and the neck 9 and therefore can not return to the body 2.

  Thus, the liquid 31 contained in the body 2 is no longer in contact with air and can therefore no longer oxidize.

  It goes without saying that the invention is not limited to the embodiments described above by way of example, but that it embraces on the contrary all embodiments within the scope of protection defined by the appended claims. Thus, all or part of the constituent elements of this bottle could be made of materials other than plastics.

Claims (12)

  1. A bottle of synthetic material, comprising a hollow body (2) made of synthetic material, open at one end and intended to contain a liquid (31), a neck (9) in which a pump (II) is mounted in a sealed manner and comprising means for sealing in the opening of the hollow body (2), and a hoop (20) equipped with releasable fixing means on the neck (9), the volume of the bottle being delimited, on the opposite side to that equipped with the pump (11), by a piston (7) movable towards the pump (11) as and when the conditioned liquid (31) is taken, characterized in that it comprises means of communication (14, 39 42) of the volume defined by the hollow body (2) with a recovery chamber in the neck (9), the communication means (14, 39, 42) for purging the air present in the body hollow (2) during the assembly of the bottle, the recovery chamber being closed and the means of putting e in communication (14, 40, 43) being sealingly closed when the bottle is assembled.   2. Bottle of synthetic material according to claim 1, characterized in that the neck (9) comprises a sleeve (10) in which is mounted in a sealed manner the pump (11), whose end, located on the side of the hollow body (2), is surrounded by a cylindrical ring (13) in which are provided the communication means (14).   3. Bottle of synthetic material according to claim 2, characterized in that the communication means (14) are vent holes.   4. Bottle of synthetic material according to one of claims 2 and 3, characterized in that the cylindrical ring (13) of the neck (9) has a peripheral rim (19).   5. Bottle of synthetic material according to any one of claims 2 to 4, characterized in that the hoop (20) intended to be fixed on the neck (9) has an inner skirt (24) whose end is intended for sealingly closing the communication means (14) formed in the cylindrical ring (13) of the neck (9).   6. Bottle of synthetic material according to claim 5, characterized in that the end of the inner skirt (24) of the hoop (20) comprises an annular rib (29) intended to cooperate with a groove (30) of shape. complementary formed in the cylindrical ring (13) of the neck (9).   7. Bottle of synthetic material according to claim 1, characterized in that the communication means (40, 43) consist of a purge ring sealingly mounted on the inner face of the neck (9), on the side hollow body (2).   8. Bottle of synthetic material according to claim 7, characterized in that the purge ring (40) comprises an annular ring-shaped portion (41) whose inner surface is extended, on the side of the hoop (20), by a rigid tubular portion (42) intended to bear against the pump (11), the tubular portion (42) having vent holes 42a intended to be sealingly closed by the pump (11) when the bottle is assembled.   9. Plastic bottle according to claim 8, characterized in that the vent holes 42a are formed on the edge of the tubular portion (42).   10. Plastic bottle according to claim 7, characterized in that the purge ring (43) comprises an annular ring-shaped portion (44) whose inner surface is extended, on the side of the hoop (20), by a frustoconical portion (45) flexible intended to be maintained in sealed contact with the pump (11) by an elastic restoring force and can leave the passage to the air, under the effect of an overpressure created in the hollow body ( 2).   11. Bottle of synthetic material according to any one of claims 1 to 10, characterized in that the sealing means in the opening of the hollow body (2) provided on the neck (9) are made by welding.   12. Bottle of synthetic material according to any one of claims 1 to 10, characterized in that the sealing means in the opening of the hollow body (2) provided on the neck (9) are made by clipping.