FR2615826A1 - Device for dispensing a mixture of a pasty substance and at least one pasty additive, particularly in the form of a striped strip, and dispensing head of such a device - Google Patents

Abstract

The device comprises a container 1 and a dispensing head 2, manufactured separately, provided with means of closure 7 and fixed on the container 1 by fixing means 28 cooperating with means 29 integral with the container. The head 2 comprises a central channel 14 open at both ends, closed by a lateral wall, opening into an outlet duct 16 of the head, and whose axis is substantially parallel to the longitudinal axis of the container 1. The lateral wall of this central channel comprises at least one auxiliary channel 19a to 19d open at both ends, one of the ends opening into a zone surrounding the central channel. The dispensing head is constituted by a detachable cap 2 whose means of fixing 28 and those 29 of the container 1 are arranged to allow the detachability of the said cap. This cap also comprises a reservoir 22 containing the pasty additive or additives 4 connecting with the outlet duct 16 of the cap through at least one of the channels 19a, 19d mentioned above.

Description

DEVICE FOR DISPENSING A MIXTURE OF SUBSTANCE
PASTE AND AT LEAST ONE PASTE ADDITIVE, ESPECIALLY UNDER
CORD STRIPE SHAPE, AND DISPENSING HEAD THEREOF
DEVICE.

 The invention relates to a device for dispensing a mixture of pasty substance and at least one pasty additive, in particular in the form of a striated bead, the streaks being formed by the pasty additive, of the kind which comprise a container and a dispensing head, manufactured separately, provided with a closure means and fixed on the container by fixing means cooperating with holding means linked to the container, said head comprising a central channel open at both ends, closed by a side wall, which opens into a head outlet duct and whose axis is substantially parallel to the longitudinal axis of the container, said side wall comprising at least one auxiliary channel open at both ends, one of the ends opening into an area surrounding the central channel.

 Devices of this kind, known to date, require the pasty substance and the pasty additive to be stored together. Contact of the two products during storage can lead in the long run to chemical, physical or other incompatibilities. In addition, such devices are provided for a specific combination of pasty substance and additive, and it is not possible to easily change one of the elements of this combination.

 The object of the invention is to remedy these drawbacks by making it possible to store the base pitous substance and the pasty additive separately, and to put them in contact only during distribution in the form of streaked tubes. The invention also aims to allow interchange of pasty additives or pasty substances throughout the lifetime of the device.

 According to the invention, a device of the kind defined above is characterized in that the dispensing head is constituted by a removable capsule, the means for fixing the capsule and the means of maintenance linked to the container being arranged to allow the removable of said capsule, and that this capsule comprises a reservoir containing the sticky additive (s), communicating with the capsule outlet conduit by at least one of the auxiliary or central channels.

 Advantageously, the capsule comprises a shoemaker and a skirt, integral with the shoemaker, comprising an inlet conduit open at both ends and located opposite the closure means of the capsule, the conduit of the skirt cooperating with the part of the body. the container which delimits its outlet orifice.

 The end of the central channel of the capsule, opposite that which opens into the outlet conduit of the capsule, is located opposite and 9 distance from the inlet conduit of the skirt thus defining, in the capsule, axial and lateral passages for the distribution of the pasty substance coming from the container.

 According to a first embodiment, the reservoir containing the pasty additive (s) is constituted by the space surrounding the central channel comprised between the external lateral wall of the central canal and the internal lateral wall of the shell of the capsule, and communicates with the capsule outlet orifice through at least one of the auxiliary channels.

 The central channel advantageously consists of a cylinder extended by a narrowed neck, the external lateral wall of the narrowed neck constituting one of the side walls of the auxiliary channel (s), the narrowed neck opening into the duct of exit from the capsule.

 Advantageously, the end of the cylinder which is located vis-à-vis and at a distance from the inlet conduit of the skirt of the capsule has a pointed shape fitting in the side wall of the cylinder at least two bevelled openings.

 According to a second embodiment, the reservoir containing the pasty additive (s) is constituted by the internal part of the central channel delimited by its external side wall and communicates with the outlet orifice of the capsule by one end of the central channel.

 The central channel can consist of an extended cylinder -by an extension whose end, on the one hand, opens into the outlet conduit of the capsule, on the other hand, has a section centered around the longitudinal axis of the outlet duct, and small compared to the cross section of the latter. It is thus possible to obtain a pasty bead provided with a central streak. The cylinder advantageously has on its external lateral wall at least one lug also linked to the internal lateral wall of the shell of the capsule, the longitudinal faces of the lug (s) and the external lateral wall of the cylinder forming a part of the side wall of at least one auxiliary channel.

 The container of the device can advantageously be constituted by a flexible tube.

 According to another possibility, the container containing the pasty substance is formed by a rigid container comprising pumping means intended to make the pasty substance penetrate into the capsule which is mounted on the container.

 The internal lateral wall of the capsule boot forms the rest of the lateral wall of the auxiliary channels.

 The shell of the capsule may have a cylindrical or prismatic shape, the base of which has a surface substantially equal to that of a cross section of the container.

 In the case where the container of the device consists of a flexible tube, the skirt of the capsule advantageously carries the means for fixing the capsule and the capsule housing can have a shoulder extending by a neck, forming the outlet conduit. of the capsule, opposite the inlet duct, of the same axis, and carrying fixing means, in particular a thread, complementary to the fixing means situated on the duct of the skirt, and identical to the holding means provided on the container.

 In the case where the container is formed by a rigid container, the pumping means advantageously also constitute the holding means linked to the container and the capsule is preferably guided in translation by guide means integral with the container, means guide in particular formed by a ring snapped on a frustoconical shoulder of the container. The pumping and holding means linked to the container may comprise a lever fork and the means for fixing the capsule cooperating with the holding means linked to the container advantageously comprising two pins fixed on the outside wall of the capsule and diametrically opposed.

 The invention also relates to a dispensing head intended to be fixed to a container containing a pasty substance, provided with closure means, comprising a central channel open at both ends, and closed by a side wall, which opens onto an orifice. outlet from the head and whose axis is substantially parallel to the longitudinal axis of the container, said side wall comprising at least one auxiliary channel open at both ends, one of the ends opening into an area surrounding the central channel characterized by the fact that said dispensing head is constituted by a removable capsule, the means for fixing the capsule and the holding means linked to the container being arranged to allow the removability of said capsule, and that this capsule comprises a reservoir containing a ( or) pasty additive (s), communicating with the outlet orifice of the capsule through at least one of the above central or auxiliary channels.

 Preferably, the dispensing head of such a device has the characteristics mentioned above.

 The dispensing head advantageously comprises additional closing means which can in particular be arranged so that they can be removed manually.

 To better understand the object of the invention, we will now describe, by way of purely illustrative and non-limiting example, several embodiments shown in the accompanying drawings.

On these drawings
- Figure 1 is a longitudinal section of a first embodiment of a device according to the invention with external parts, the capsule being mounted on its container, the closure means of the capsule not being fixed on that -this.

 FIG. 1A represents a striated rod obtained using the device of FIG. 1.

 - Figure 2 is a perspective view of the capsule provided with its closure means.

 - Figure 3 is a section along line 111-111 of Figure 4 of a second embodiment, the container being partially shown, the capsule being fixed on the container and the closure means of this capsule not being attached to it.

 FIG. 3A is a representation of a streaked rod from the variant shown in FIG. 3.

 - Figure 4 is the top view along line IV-IV of Figure 3.

 - Figure 5, finally, is a longitudinal section of a third embodiment of a device according to the invention with external parts, the capsule being mounted on its container.

 Referring to Figure l, we see that the device according to the invention consists of a flexible tube 1 on which is fixed a capsule marked as a whole by the reference 2. The tube 1 contains a pasty substance 3 and the capsule contains a pasty additive 4. This capsule consists of a shell of revolution 5 of the same axis as the tube, shell which is attached to a skirt 6 also of revolution and of the same axis as the shell, The capsule comprises of plus closure means 7. The boot 5 has, on the side opposite to the skirt 6, a shoulder 8 which is extended by a cylindrical neck 9 and with the same axis as the axis of the boot 5. This neck 9 carries on its wall external thread l and the end Il of this neck delimits the capsule outlet orifice.

 The capsule 2 also comprises a central and longitudinal cylinder 12 extended by a narrowed neck 13.

The cylinder and shrunk neck assembly is fixedly attached to the boot 5. This cylinder and shrunk neck assembly is preferably molded with the boot 5, of which it is an integral part. The internal lateral wall I2a of the cylinder and the internal lateral wall 13a of the narrowed neck delimit in the case 5 a central channel 14. This channel 14 has a longitudinal axis coincident with the axis of the case 5 as well as with the axis of the skirt 6. The end 15 of the narrowed neck 13 constitutes a first end of the central channel 14. This end 15 opens into an outlet conduit 16 of the capsule which leads to the outlet orifice 11.

 The end of the cylinder 12, which is not linked to the narrowed neck 13, forms a point 17 thus defining in the side wall of the cylinder 12 two bevelled passages 18a and 18b.

 The external lateral wall 13b of the narrowed neck 13 and the internal lateral wall 5a of the shoemaker delimit four auxiliary channels ISa a 196, of which only three of them are shown in FIG. 1. These auxiliary channels are open at their two ends, respectively 2a to 2d and 21a to 21 ~. The ends 2a to 2d open into the outlet conduit 16 of the capsule. The ends referenced 21a to 21d open into a reservoir 22. This reservoir 22 is located in the space surrounding the external wall 12b of the cylinder 12 and limited by the internal lateral wall 5a of the case 5.

 The skirt 6 has in its central zone a cylindrical tubular part 23, of the same axis as the skirt and whose internal side wall 23a delimits an inlet conduit 23b for the capsule. The end 23c of this inlet duct closest to the tube 1 defines the inlet opening of the capsule.

 The tubular part 23 of the skirt 6 has an annular surface 24 opposite to the inlet orifice 23c. The tubular part 23 is extended by a frusto-conical part 25 which widens towards the reservoir 22 and ends in a peripheral cylindrical part 26, directed opposite the reservoir 22. This part 26 comprises at its end an annular support 27 against which the boot 5 is in abutment.

 The internal wall 23a of the tubular part 23 of the skirt 6 carries a thread 28 intended to cooperate with a complementary thread 29 carried by the part 3 of the body of the tube which forms the outlet orifice thereof.

When the boot 5 is mounted on the skirt 6, the point 17 of the cylinder 12 is opposite and at a distance from the inlet conduit 23b of the skirt 6. Lower axial passages C and D as well as lateral passages lower
A and B are thus defined by the space existing between the cylinder 12 and the internal wall 25a of the frustoconical part 25 of the skirt 6. The central channel 14 defines an upper axial passage E and the auxiliary channels ISa to 19d defining, respectively , upper side passages such as G and H.

 When the capsule 2 is not mounted on the tube 1, it comprises, as can be seen in FIG. 2, additional closing means 31 which can be constituted, for example, by an aluminum foil glued at its periphery on the annular rim 27. This sheet 31 has a tongue 32 which facilitates its manual tearing.

 The mounting of the capsule 2 on the tube 1 is simple. Once the sheet 31 has been removed, the tubular part 23 of the skirt 6 is screwed onto the part 3 of the body of the tube forming the outlet orifice of the latter. The end of the part 3 bears against the annular part 24.

 The connection between the capsule 2 and the tube t is thus a removable connection so that one can remove or put the capsule on the tube 1 at will. One can thus choose to use such or such additive for the same pasty substance contained in tube 1 or vice versa for the same additive choose such or such main tube 1.

 The neck 9 of the capsule 2 can be closed by the closure means 7. These consist of a cylindrical plug 33 comprising, on the internal face of its upper part 34, an annular projection 35 centered around the axis of the cylindrical plug 33. Under the upper part 34 is provided a cylindrical part 36 of the same axis as the axis of the plug 33, intended to be screwed onto the neck 9 and carrying a thread 37 complementary to the thread l of the neck 9. This thread l is identical to that 29 carried by the part 3 of the body of the tube forming the outlet orifice of the latter. It is thus possible with this plug 33 either to close the capsule 2, or to close the tube 1.

 When the plug 33 closes the neck 9 the protuberance 35 closes the upper lateral passages such as G and H and the central zone 35a located inside the annular protrusion 35 closes the upper axial passage E.

 FIG. 1A shows a tube 38 obtained using the device of FIG. 1. This tube consists of a cord 39. of the substance 3 contained in the tube 1 and of longitudinal peripheral ridges 4, 41, 42, 43 constituted by the pasty additive 4 contained in the reservoir 22.

The operation of the device of the invention making it possible to obtain this flange 38, is described below. By exerting pressure on the tube 1, it causes its deformation and the substance 3 rises in the inlet conduit 23b of the skirt 6. The pasty substance 3 then borrows the axial passages C and D as well as the lateral passages A and
B. The pasty substance 3 which has passed through the side passages A and B arrives in the reservoir 22 in contact with the pasty additive 4. The substance 3 then pushes the pasty additive 4 forced to flow through the upper side passages such as G, H delimited by the auxiliary channels 19a to 19d. The pasty substance 3 having taken the axial passages C and D enters the central channel 14 and leaves again by taking the upper axial passage E.

 The substance 3, coming from the passage E, and the pasty additive 4 coming from the upper lateral passages open into the outlet conduit 16 of the capsule. There is thus formation of the flange 38 having four streaks of additive 4 peripherals.

 Another embodiment of the invention is shown in Figures 3 and 4. The constituent elements which are analogous or have a function similar to those described in connection with FIGS. 1 and 2 will be designated by references equal to the sum of the number iB and the reference used for the corresponding element, in FIGS. 1 and 2 Their description will not be repeated or will be made succinctly.

 The central channel 114 of the capsule 12 is delimited by the internal wall of a cylinder 112 surmounted by a dome 113 whose apex 115 is open and opens into the outlet duct 116 of the capsule 12. The end of the cylinder 112 which is opposite and at a distance from the inlet conduit 123b of the skirt 16 is open.

 The reservoir 122 which contains the pasty additive 14 is constituted by the central channel 114. Four pins 45a to 45d coming from molding with the cylinder 112 and the shoemaker 15, provide a mechanical connection between the internal lateral wall of the shoemaker 185a, which found at the neck 19 and the cylinder 112. The external side wall 112b of the cylinder, the longitudinal faces of the lugs 45a to 45d, and the internal side wall of the neck 189 delimit four auxiliary channels 119a to 119d.

 The section of the opening 115 of the dEme 113 is small compared to the section of the outlet duct 116 of the capsule 12. There is thus obtained, according to an operation which will be described below, a coil 138 comprising a colored central stripe 14 (FIG. 3A) constituted by the pasty additive 14, the peripheral part 139 of the tube 138 being constituted by the pasty substance 13.

 The area 135a of the upper part 134 of the plug 133 constituting the closing means 17 of the capsule 12, which is located inside the annular projection 135, has a conical shape. Thus, when the closure means 17 are put in place on the neck 19 of the capsule 12, the annular projection 135 closes the upper lateral passages such as F, H while the part 135a closes the upper axial passage E.

 The operation of this variant is substantially similar to that described above. When pressure is exerted on the tube 11, the pasty substance 13 rises in the capsule 12 via the inlet conduit 123b, then the lower axial passage C, D as well as the lower lateral passages A and B. From the lower axial passage C, D the substance 13 enters the reservoir 122 and thus comes into contact with the pasty additive 14. The pasty substance 13 then pushes this additive so that it leaves the conduit 116 of the capsule 12 by the opening of the top 115. The pasty substance 13 which borrows the upper lateral passages F, H also opens into the outlet duct 116 of the capsule 12.

There is then obtained at the outlet of the capsule a tube 138 as shown in FIG. 3A, the peripheral part 139 of which is constituted by the pasty substance 13 and which comprises a central strip 14 constituted by the colored additive 14.

 FIG. 5 represents a variant of the invention. The constituent elements of this variant which are similar or which have a function substantially analogous to those already described in connection with FIGS. 1 and 2 will be designated by numbers equal to the sum of the number two hundred and the reference used for FIGS. 1 and 2.

Their description will not be repeated in detail.

 In this variant, the container 21 is constituted by a rigid container containing the pasty substance under pressure; the dispenser is then powered by the aerosol type. The container 21 is constituted by a cylinder having in the vicinity of its outlet orifice, a frustoconical shoulder 46 flaring downwards. On this frustoconical shoulder 46 is fixed a flange 46a, surrounding the part 23 of the container which forms its valve outlet, and of an outside diameter slightly greater than that of the flat upper part of the shoulder 46.

 A cylindrical guide ring 47 with an internal diameter slightly greater than that of the capsule 22, and provided with a cylindrical skirt 48, the free end of which is bent towards the central axis of the ring, is fixedly attached to the container 21 by means of the skirt 48 which is slammed under the collar 46a. On one side of the ring 47 is articulated, above the skirt 48, a fork-lever 229, so that the latter is always facing the shoulder 46 and has limited angular movement, in one direction opposite to that of the container, by a stop which can only be crossed by exerting on the fork 229 a minimum force. The capsule 22 is provided with two pins 228 fixed on its outer wall, on which the fork 229 is likely to come to bear.

 The mounting of the capsule 22 on the container 21 is carried out by sliding the latter in the guide ring 47, while the fork 229 has been raised substantially vertically with crossing of its stop, until the end of the part 23 comes to bear against the annular part 224. The fork-lever 229 is then folded down to come to bear on the pins 228, the abutment of the articulation of the fork 229 preventing the capsule 22 from detaching from the container 21 .

 When the fork 229 is pressed, the capsule slides inside the ring 47 and presses on the part 23 of the container 21 releasing the pasty substance in the capsule 22. The fork 229 therefore constitutes pumping means. The mixture of pasty substance and additive leaving the device is in the form of a foam. The pins 228 of the capsule 22 also act as fixing means cooperating with the fork 229, acting as holding means linked to the container 21.

 The capsule 22 can either include the characteristics of the capsule 2 described in FIG. 1, or those of the capsule 12 described in FIG. 3.

 The capsules 2, 12, 22 have a cylindrical shape, the base of which has a surface area substantially equal to that of a cross section of the tube 11 or of the rigid container 21.

The height of the capsule 2, 12, 22 depends on the ratio of the volume of pasty additive to the volume of pasty substance. The volume of the pasty additive contained in the reservoir 22, 122 can for example vary between, 5 cc and 1 cc.

 The invention therefore provides a device for the distribution of pasty substance and at least one pasty additive, in the form of a striated bead allowing the pasty substance and the pasty additive to be stored separately and not brought into contact until time. of use. Thanks to the removable nature of the connection existing between the capsule and the container, a capsule and a container can be interchanged as desired.

Claims (19)

 1. Device for dispensing a mixture of pasty substance (3; 183) and at least one pasty additive (4; 14), in particular in the form of a striated bead, the streaks being formed by the pasty additive, comprising a container (1, 11, 281) and a dispensing head (2; 12; 22) manufactured separately, provided with closing means (7; 17; 207) and fixed on the container (1; 101; 21) by fixing means (28; 128; 228) cooperating with holding means (29; 129; 229) linked to the container, said head (2; 102; 22) comprising a central channel (14; 114) open at both ends, closed by a side wall, opening into an outlet conduit (16; 116) of the head, and whose axis is substantially parallel to the longitudinal axis of the container (1; 11; 281), said side wall comprising at least an auxiliary channel (19a to 196; 119a to 119d) open at both ends, one of the ends opening into an area surrounding the central channel (14; 114), characterized é by the fact that the dispensing head is constituted by a removable capsule (2; 102; 22). the fixing means (28; 128; 228) of the capsule and the holding means (29; 129; 229) connected to the container (1; ll; 21) being arranged to allow the removable of said capsule, and that this capsule comprises a reservoir (22; 122) containing the pasty additive (s) (4; 14), communicating with the outlet conduit (16; 116) of the capsule by at least one of the above-mentioned channels ( 19a to 19d; 114).  2. Device according to claim 1, characterized in that the capsule (2; 12; 22) comprises a shoemaker (5; 185; 25) and a skirt (6; 186 26), integral with the shoemaker, comprising a conduit entry (23b; .123b) open at both ends and located opposite the closure means (7; 17; 27), the conduit (23b 123b) of the skirt (6; 16; 286) cooperating with the part (3; 130; 23) of the container body (1; 101; 21) which delimits its outlet orifice.  3. Device according to claim 2, characterized in that the end of the central channel (14; 114), opposite that which opens into the outlet conduit (16; 116) of the capsule, is located opposite and spaced from the inlet conduit (23b; 123b) of the skirt (6; 16;), thus defining, in the capsule, axial (C; D) and lateral (A; B) passages for the distribution of the pasty substance (3; 13) from the container (1; ll 21).  4. Device according to claim 3, characterized in that the reservoir (22) containing the (or) pasty additive (s) (4) is constituted by the space surrounding the central channel (14) between the side wall outer of the central channel and the inner side wall (5a) of the boot (5) of the capsule and communicates with the outlet orifice (11) of the capsule by at least one of the auxiliary channels (19a to 19d)  5. Device according to claim 4, characterized in that the central channel (14) consists of a cylinder (12) extended by a narrowed neck tel3), the external lateral wall (13b) of the narrowed neck constituting one of the walls side of the auxiliary channel (s) (19a to 19d), the narrowed neck (13) opening into the outlet conduit (16) of the capsule (2).  6. Device according to claim 5, characterized in that the end (17) of the cylinder (12) which is located opposite and at a distance from the inlet conduit (23b) of the skirt (6) of the capsule has a pointed shape fitting in the side wall of the cyl-indre (12) at least two beveled openings (16a; 18b).  7. Device according to Claim 3, characterized in that the reservoir (122) containing the pasty additive (s) (14) is constituted by the internal part of the central channel (114) delimited by its internal lateral wall and communicates with the outlet orifice (111) of the capsule (182) through one end of the central channel (114).  8. Device according to claim 7, characterized in that the central channel (114) consists of a cylinder (112) extended by an extension (113) whose end (115), on the one hand, opens into the outlet conduit (116) of the capsule, and on the other hand, has a section centered around the longitudinal axis of the outlet conduit, small relative to the section of the latter, thus making it possible to obtain a pasty bead (138) provided with a central groove (14), the cylinder (112) having on the external wall (112b) at least one lug (45a ... 45d) also linked to the internal lateral wall (15a) of the shoemaker ( 185) of the capsule, the longitudinal faces of the lug (s) and the external lateral wall (112b) of the cylinder forming a part of the lateral wall of at least one auxiliary channel (119a to 119d).  9. Device according to any one of claims i a S, characterized in that the container is constituted by a flexible tube (1; 11).  10. Device according to any one of claims 1 to 8, characterized in that the container consists of a rigid container (201) comprising pumping means (229) intended to make the pasty substance contained in the capsule penetrate ( 22) which is mounted on the  container (281).  11. Device according to claim 9 or 10, characterized in that the internal lateral wall (5a LB5a) of the boot (5; 15) of the capsule (2; 12 22) forms the rest of the lateral wall of the auxiliary channels ( ISa a 196; 119a to 119d).  12. Device according to claim 11, characterized in that the boot (5; 15) of the capsule (2; 12; 22) has a cylindrical or prismatic shape whose base has a surface substantially equal to that of a section transverse of the container (1; 101; 21).  13. Device according to all of claims 9 and 12, characterized in that the skirt (6; 16) of the capsule (2 (12) carries the fixing means (28; 128) of the capsule.  14. Device according to claim 13, characterized in that the boot (5; 15) of the capsule has a shoulder (8; 188) extending by a neck (9; 189) forming the outlet conduit (16; 116 ) of the capsule, opposite the inlet duct (23b; 123b), of the same axis, and carrying fixing means (l; ll), in particular threads, complementary to the fixing means (28 128) located on the duct (23b, 123b) of the skirt (6; 16), and identical to the holding means (29; 129) provided on the container (1; 11).  15. Device according to all of claims 1 and 12, characterized in that the pumping means also constitute the holding means (229) linked to the container (21).  16. Device according to claim 15, characterized in that the capsule (22) is guided in translation by guide means (47) integral with the container (21), guide means in particular formed by a ring snapped on a frustoconical shoulder (46) of the container (21).  17. Device according to claim 16, characterized in that the pumping and holding means linked to the container (21) comprise a lever fork (229) and that the means for fixing the capsule cooperating with the holding means (229 ) linked to the container include two pins (228) fixed on the outside wall of the capsule (22) and diametrically opposed.  18. Dispensing head intended to be fixed on a container (1; 11; 21) containing a pasty substance (3; 183), provided with closing means (7; 17; 27), comprising a central channel (14; 114 ) open at both ends, closed by a side wall, opening into an outlet duct (16; 116) from the head, and whose axis is substantially parallel to the longitudinal axis of the container (1; 101; 21), said side wall comprising at least one auxiliary channel (19a to 196; 119a to iSd) open at both ends, one of the ends opening into an area surrounding the central channel (14; 114), characterized in that the head of distribution consists of a removable capsule (2; 12; 22), the fixing means (28; 128; 228) of the capsule and the holding means (29; 129; 229) linked to the container (1 101; 21) being agencies to allow the removability of said capsule, and that this capsule comprises a reservoir (22; 122) containing the additive (s) pasty (4 14), communicating with the outlet conduit (16; 116) of the capsule through at least one of the above-mentioned channels (14; 19a to 196; 114; 119a to 119d).  19. Dispensing head according to claim 18, characterized in that the capsule (2; 12; 22) comprises a shoemaker (5; 15; 25) and a skirt (6; 16 26), integral with the shoemaker, comprising a inlet conduit (23b; 123 ~) open at both ends and located opposite the closure means (7; 17; 27), the conduit (23b 123 ~) of the skirt (6; 186; 26) cooperating with the part (3; 13; 23) of the body of the container C1; 11; 21) which delimits its outlet orifice.  2. Dispensing head according to claim 19, characterized in that the end of the central channel (14; 114), opposite that which opens into the outlet duct (16; 116) of the capsule, is located opposite screw and at a distance from the inlet duct (23b; 123 ~) of the skirt <6 106; 26), thus defining, in the capsule, axial (C, D) and lateral (A, B) passages for the distribution of the pasty substance (3; 13) from the container (1; 101; 21).  21. Dispensing head according to claim 2, characterized in that the capsule (2; 12; 22) comprises additional closing means (31) opposite the closing means (7; 1e7 27), these additional closing means (31) being in particular arranged so that they can be removed manually.