FR2724154A1 - PRODUCT DISPENSER BIT, IN PARTICULAR FOAM FOR PRESSURIZED VALVE CONTAINER - Google Patents

Abstract

The invention relates to a product dispensing nozzle for a pressurized container with a valve, comprising a channel extending from the valve of the container to a dispensing orifice opening out towards the outside of the nozzle. The channel (9) comprises at least one collection cavity (13) located, in the rest position of the container, below areas of the channel (9) in which the product is capable of being retained when it circulates in the channel (9), so that the product thus retained flows and accumulates in this collection cavity (13) when the container is subsequently left to stand.

Description

The present invention relates to a dispensing nozzle of

  product, in particular of foam, for pressurized container with valve.

  Such dispensing tips are already known to be used for example on containers containing hair-holding foams. These known dispensing tips comprise an internal channel which conveys the packaged product into the container from the valve of the latter to a dispensing orifice opening towards

the outside of the mouthpiece.

  Depending on the shape of this channel and depending on whether the container is used with its dispensing orifice directed downwards or upwards, it can remain inside the canal, after delivery of a dose of

  product, a small and nonetheless significant amount of this product.

  The dispensing orifice is generally directed upwards in the resting position of the container, the valve then being at the bottom of the channel, the product thus deposited on the walls of the channel finally flowing and accumulates in part. inferior of the latter, which may in the long run close it in its narrowest parts, especially in the vicinity

of the container valve.

  This disadvantage is particularly troublesome with hair-holding foams, which contain resins that harden on drying. The present invention aims to provide a dispensing nozzle whose channel does not present the risk of being blocked by accumulation of

product.

  The subject of the present invention is a product dispensing tip for a pressurized valve container, comprising a channel extending from the valve of the container to a dispensing orifice opening towards the outside of the mouthpiece, characterized in that the channel comprises at least one collection cavity located, in the rest position of the container, below areas of the channel in which the product is likely to be retained when it circulates in the channel, so that the product thus retained flows and accumulates in this collection cavity

  when the container is left at rest later.

  The dispensing nozzle according to the invention makes it possible to prevent the product deposited in the channel from flowing and accumulating in its parts.

  the narrowest, especially in the vicinity of the valve of the container.

  For this purpose, the collection cavity according to the invention has the following

  function to collect the product that flows along the walls of the canal.

  According to the invention, this cavity is dimensioned in such a way that it can contain enough product to never be

  filled until the contents of the container are exhausted.

  The quantity of product that can be retained in the channel and accumulates in said collection cavity depends in particular on the nature of the product, the frequency of use and the capacity of the container, the shape of the channel and the type of dispensing orifice that is

placed at the end of the canal.

  In a first embodiment of the invention, the collection cavity is located in a bent portion of the channel, at the right of a branch

  vertical of the latter leading to the dispensing orifice.

  In a second embodiment of the invention, the collection cavity is located in the lower part of the channel, at a level lower than the orifice of the valve. Thus, in the manner of a siphon, the collection cavity collects product flows while preventing the latter from

  accumulates at the level of the orifice of the valve.

  In a third embodiment of the invention, the

  cavity extends in the vicinity of the dispensing orifice.

  This embodiment is particularly indicated in the case where the dispensing orifice is provided with a grid or spark gap, which

  constitutes a privileged zone of retention of the product.

  According to a fourth embodiment of the invention, in which the channel comprises an inclined branch, the collection cavity is

  located in the lower part of the sloped branch of the canal.

  In order to better understand the invention, will now be described four embodiments given by way of non-limiting example with reference to the accompanying drawing in which: - Figure 1 is an axial sectional view of a nozzle dispenser according to a first embodiment of the invention, - Figure 2 is an axial sectional view of a dispensing nozzle according to a second embodiment of the invention, - Figure 3 is an axial sectional view of a dispensing nozzle according to a third embodiment of the invention, and - Figure 4 is an axial sectional view of a nozzle

  dispenser according to a fourth embodiment of the invention.

  In the drawing, the dispensing nozzle comprises a flange 1 for mounting it on a pressurized container not shown. A blade 2 is subject to this collar 1 via a zone

  hinge 3 which is actually a thinned portion of the blade 2.

  The blade 2 is integral with an operating rod 4a, 4b, which is, therefore, rotatable about the hinge zone 3 at a very small angle of rotation, so that the movement of the rod maneuver can be likened to an axial translational movement. A push-button 5 makes it possible to exert pressure on the operating rod 4a, 4b in order to drive it into a valve body 6

  it is pushed in the opposite direction by a spring 7.

  The valve body 6 has an opening 8a in which the operating rod penetrates and, opposite this opening 8a, a mouth 8b intended to receive a not shown tube dipping into the

conditioned product.

  A channel 9 is provided inside the operating rod

4a, 4b.

  The end of the channel 9 located on the side of the container comprises

a passage 10 of small diameter.

  In the rest position, the spring 7 pushes the operating rod 4a, 4b upwards, resting on a flange 11 which closes the orifice 8a of the valve body 6. The passage 10 is then closed

  and the product remains in the unrepresented pressure vessel.

  When pressure is exerted on the push-button 5, the operating rod 4a, 4b goes down into the valve body 6 and sets

  the orifice 10 in communication with the interior of the valve body.

  The product can then enter through passage 10 into the

  channel 9 o it is conveyed to a dispensing orifice 12.

  In both embodiments of Figures 1 and 2, the

  channel 9 is essentially vertical.

  As a result, the little product that is retained inside the channel tends to flow over the entire length of the canal and

  accumulate in the vicinity of the small diameter passage 10.

  In order to limit the quantity of product that can accumulate in the vicinity of the passage 10, the channel 9 comprises, in the embodiment of FIG. 1, a collection cavity 13 located at the right of the

  vertical part of large diameter of channel 9.

  Thus, the product retained by the dispensing orifice and deposited on the walls of the upper part of the channel 9 accumulates in the recovery cavity 13. Small amounts of product accumulated in the lower part of the channel 9 can flow to the vicinity of the orifice 10 but in too small an amount to cause a risk of clogging. In the embodiment of Figure 2, a collection cavity 14 is provided in the lower part of the channel 9, in a stud 15 which serves as a guide to the spring 7. Thus, the entire product flowing in the channel 9 is collected in the collection cavity 14, below the level of the

passage of the orifice 10.

  The embodiment of Figure 3 corresponds to the case where the dispensing orifice 12 is provided with a not shown grid or spark gap. Such a grid or spark gap constitutes a privileged zone

  retention of the packaged product.

  As a result, it is an important source of flow

of the product in channel 9.

  An annular collection cavity 16 is provided around the upper end of the channel 9 to collect the product retained by the

  gate of the dispensing orifice 12.

  In the embodiment of FIG. 4, the channel 9

has an inclined branch 9a.

  In this case, a recovery cavity 17 is provided at the lower part of this inclined branch 9a to collect the product flowing from the dispensing orifice 12 and along the walls of this

inclined branch 9a of the channel.

  The embodiments described above have been presented

isolated from each other.

  However, it is obvious that to improve the efficiency of the device, it is advantageous to combine them by placing

  a plurality of recovery cavities on the same channel.

  For example, the three embodiments of FIGS. 1 to 3 can be combined to place the cavities on the same channel 9 simultaneously.

recovery 13, 14 and 16.

  It is understood that the embodiments which have just been described are not limiting and they can receive any desirable modification without departing from the scope of the invention.

Claims (4)

  1 - Product dispensing nozzle for a pressurized valve container, comprising a channel extending from the valve of the container to a dispensing orifice opening towards the outside of the nozzle, characterized in that the channel (9) comprises at least one collecting cavity (13, 14, 16, 17) situated, in the rest position of the receptacle, below zones of the channel (9) in which the product is capable of being retained when it circulates in the channel (9), so that the product thus retained flows and accumulates in this collection cavity   (13, 14, 16, 17) when the container is subsequently left to rest.   2 - dispensing nozzle according to claim 1, characterized in that the collection cavity (13) is located in a bent portion of the channel (9), in line with a vertical branch of the latter leading to the dispensing orifice (12).   3 - dispensing nozzle according to claim 1, characterized in that the collection cavity (14) is located in the lower part of the   channel (9), at a level lower than the orifice of the valve of the container.   4 - dispensing nozzle according to claim 1, characterized in that the collection cavity (16) extends in the vicinity of the orifice of distribution (12).   - dispensing nozzle according to any one of   Claims 1 to 4, characterized in that the channel (9) has a   inclined branch (9a) and that the collection cavity (17) is partially   lower part of the inclined branch (9a) of the channel (9).