EP1527005A1

EP1527005A1 - Distributor for pasty to flowable materials

Info

Publication number: EP1527005A1
Application number: EP03766130A
Authority: EP
Inventors: Alfred Von Schuckmann
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-07-29
Filing date: 2003-07-07
Publication date: 2005-05-04
Anticipated expiration: 2023-07-07
Also published as: US20060144855A1; ATE355235T1; UA84847C2; DE10234417A1; PL202337B1; RU2005105291A; WO2004013016A1; TW200404720A; CN1671605A; PL373736A1; CA2493256A1; TWI290120B; DE50306676D1; JP2006500288A; RU2326036C2; AU2003253032A1; EP1527005B1

Abstract

Dispenser (Sp) for pasty to flowable substances (M), the dispenser comprising a dimensionally stable container having a mouthpiece, a bag located within the container, and a mouthpiece pump; wherein a filling volume of the dispenser is held by the container ( 1 ), at least half of which comprises the bag ( 10 ) which, when emptied from the mouthpiece, collapses into one container half ( 2 ); and wherein the bag ( 10 ) collapses on account of a negative emptying pressure produced by the mouthpiece pump (P).

Description

Dispenser for pasty to flowable masses

The invention relates to a dispenser for pasty to flowable masses, the filling volume of which is contained in a dimensionally stable container, which consists at least in half of a sack that turns inside a container half when emptied on the mouthpiece side.

A dispenser of this type is known from EP 0 505 611 A2. The pasty mass is discharged by overpressure. This is generated via a dimensionally stable, squeezable container. The pressure build-up is valve controlled from the bottom of the dispenser. Such a device is located in the dispenser head. The sack enclosed by the container partly consists of a bottom half that can be turned over, the other half of which is stiffened from the inside by a hard part.

US Pat. No. 2,471,852 proposes applying the overpressure to discharge via a compression spring mounted on the bottom of the dimensionally stable container. The cover bag superimposed there is a component of a cartridge, the upper container half of which is designed as a dome-shaped hard part, in the zenith of which there is an outlet valve which is actuated via a dispenser mechanism in the manner of a push button. The opening path of the mouthpiece is opened or released here. The spring is overlaid by a pot-shaped body, the shape of which is matched to the tapering indentation contour.

The object of the invention is to design a dispenser of the generic type in a structurally simple and functionally reliable manner.

This object is initially and essentially achieved in a dispenser with the features of claim 1, the aim being that the sack is emptied due to an emptying device generated by a mouthpiece pump. Vacuum inside out, i.e. in the direction of a free space of the appropriate size facing the pump.

As a result of such a configuration, a generic dispenser has been achieved in a simple, advantageous solution: it no longer requires the container to be squeezed out of shape, which could lead to malfunctions in an exaggerated or understated manner of operation and, moreover, takes some getting used to. Rather, the usual dispenser head actuation is used. The portioned caterpillar is then sucked in via the level column of the pasty to flowable mass. The sack follows automatically in the direction of discharge. It is pulled along as it were as an air-impermeable skin, from the position close to the ground into the area of the dispenser head, where it enables the residual emptying of the dispenser without any problems, and without any special application aid, such as that provided by the prior art in the form of the spring described. The evacuation negative pressure generated in the area of the mouthpiece pump is sufficient for the subsequent turning inside out.

The subject matter of the further claims are explained below in relation to the subject matter of claim 1, but may also be of importance in their independent formulation. It proves structurally advantageous that an inwardly projecting edge of the sack in the area of the equatorial connecting joint of two container shell halves is flanged, with one half carrying the emptying mouthpiece pump in the apex area. The edge of the sack is held between two jaws. Due to the longitudinal center attachment there is no stress for the sack; it is practically the same in both directions. The flange-like edging of the edge of the sack can be achieved by screwing in the case of a rotationally symmetrical structure of the dispenser or of the container. Otherwise, in the case of non-circular cross sections, thermal bonding takes place in this area. Even gluing is conceivable. Arranging the emptying mouthpiece pump in the apex area of one half leads to a welcome polydirectionality of wall sections and thus to a stabilization of the entire container, the half below the equator stabilizing the relevant area; The dispenser is easy to handle. If the material is sufficiently flexible, the sack can also be reduced to a practically flat membrane. The filling pressure then turns the membrane inside the container into a sack which, in the manner described, sags in the opposite direction with increasing emptying, that is to say in the direction of the emptying mouthpiece pump. The restoring force of the material can even be used here. Either way, it proves to be advantageous for both versions that a grille is arranged in front of the passage area between the container shell half and the emptying mouthpiece pump to support the inverted sack. In this way there is no locking of the application path on pasty mass. The measure that the shell half equipped with the emptying mouthpiece pump preferably has support ribs for the sack extending to the passage area serves the same purpose of ensuring clogging-free inflow paths of pasty mass. Such a longwall, which is similar to buildings, can be taken into account during the spraying process. Constellations blocking the way in the sense of slings are avoided. It is also advantageous that the sack has a slightly stabilized bottom surface. This part, which is subject to increased mechanical stress, is ideally equipped to use the dispenser as a disposable device by means of refilling. Another measure of the tear-proof delivery of the masses is that the inlet opening of the emptying mouthpiece pump adjoining the passage area is designed as a ring opening interrupted as a web, concentric and coaxial to the sack. The pending mass is absorbed across the board. Partial pocket formation of the sack is excluded. Instead of a ring-broken ring opening, a Ring opening are formed by a bore ring. In one case as in the other, the further measure proves to be advantageous in that the ring opening is arranged in a bottom of the base opposite to the direction in which the masses divert. The acts as an aligned feeding collector. Finally, in terms of flow technology, it is favorable that the diameter of the ring opening essentially corresponds to the diameter of the pass region or grating.

The subject matter of the invention is explained in more detail below on the basis of an illustrative exemplary embodiment. It shows:

1 the dispenser realized as a standing device in a side view, closed with a protective cap, slightly enlarged,

2 is a top view of this,

3 shows the dispenser in an exploded view,

4 is an inside view of the shell half of the container carrying the emptying mouthpiece pump, showing support ribs for the sack,

5 shows a vertical section through the container of the dispenser, with the flanges still not connected,

6 shows an enlargement VI from FIG. 5,

Fig. 7 shows a cross section in the region of a support rib and

Fig. 8 is a vertical section through the emptying mouthpiece pump, greatly enlarged. The dispenser Sp shown is realized as a standing device. It serves to dispense pasty to flowable masses M, the filling volume of which is contained in a dimensionally stable container 1.

The container 1 is elongated in shape, flat and of non-circular cross-section, preferably elliptical (see FIG. 2).

The container 1 is divided into halves with respect to its longitudinal central axis x-x.

It consists of an upper shell half 2 and a lower shell half 3. Their mutually open ends collide in a plane E-E lying perpendicular to the longitudinal center plane x-x. The shell halves 2, 3 are, with the exception of further moldings or moldings to be explained later, identical to the cavity.

The open ends facing each other are angled all the way out. The upper shell half 2 is a flange 4 and the lower shell half 3 is a flange 5 (cf. also FIG. 6).

The flange 4 of the upper shell half 2 is bent vertically in the longitudinal direction of the container 1 in the direction of a footprint 6. The corresponding angle leg 7 engages over the outwardly directed end edge 8 of the flange 5 of the lower shell half 3.

The relevant edge contour thus forms a channel 9 (see FIG. 3) for the full incorporation of the flange 5 of the lower shell half 3. The precision of this peripheral edge connection forms a good prerequisite for holding an inner element of the container 1, specifically in the form of a bag 10. The latter is foldable, preferably able to be turned over and has the required elasticity or flexibility for this purpose.

The sack 10 is matched to the inner lining of both the lower shell half 3 and the upper shell half 2, which can be reached under covers. It comes in a snug fit to the respective inner wall of the container shell halves 2, 3. At the top, pasty mass M is in between.

Facing the plane E-E, the sack 10 is gripped on the reservoir side via an edge 11. The mutually facing surfaces of the flanges 4 and 5 serve as the clamping jaw-like connecting joint. The corresponding outwardly projecting edge 11 of the sack 10 is bound in the region of an equatorial connecting joint, as it were. Its elastic material also serves as a seal. The connecting joint bears the reference numeral 12. It can be parallel-walled, as can be clearly seen in FIG. 6, or it can wedge out continuously thickening towards the outer edge, so that undercut surfaces are created which, in addition to the mere connection force connection, also have one Open form fit as a reinforced captive. The connecting joint entrances are convexly rounded. This avoids a cutting effect on the "slip hinge".

After the sack 10 has been positioned, the active leg 7 is further folded over, ending in a final grip under the flange 5 of the lower shell half 3.

The angle leg 7 can be flipped thermally. On the other hand, an adhesive connection, a snap connection or even a screw connection Connection conceivable if there are rotationally symmetrical shell halves 2, 3 at least in the joint area.

The shell halves 2, 3 merge into narrowed cross-sectional zones with respect to their sides facing away from the open, mutually directed ends. The upper tapering zone ends in a passage area 13 of the container 1 for dispensing the pasty mass M. This is circular and relatively large in diameter, using almost the entire flattening width of the container 1.

The end of the lower shell half 3 directed against the footprint 6 likewise merges into a narrowed cross-sectional zone. This tapered zone has a standing edge 14. It is of such a vertical height that it leaves a free space below the bottom 15 of the container 1 formed there to the said parking space 6. The bottom 15 has an air compensation opening 16 in the center. This compensates for the volume of the underfloor area of the sack 10 to the extent that the sack hikes up.

In the passage area 13, the upper shell half 2 continues into an upwardly directed connection piece 17. It is an integral molding. The connector 17 receives an adapted reduced diameter ring collar 18. Both forms are basically cylindrical.

The relevant head area of the dispenser Sp serves to hold a manually operable emptying mouthpiece pump P.

With its superstructure, the emptying mouthpiece pump P, which is located specifically in the apex area of the upper shell half 2, forms a vertically oriented actuation button 19. Beyond its troughed actuation surface, there is a sideways, rising mouthpiece 20. This is, at least in the end area, tubular and so suitable for applying a strand-shaped amount of pasty or free-flowing mass M.

A negative pressure is exerted via the mouthpiece pump P, so that a powerful, complete emptying of the initially sagging sack 10, which then increasingly turns upside down in the dispensing direction, results and can be seen in the direction of a free space of the upper shell half 2 facing the mouthpiece pump P. Sack 10 of the appropriate size. The direction of spreading is indicated by arrow y. It coincides with the longitudinal central axis x-x and merges into a slightly increasing lateral direction within the actuation key 19. The actuating key 19 carrying the mouthpiece 20 can be rotated about the longitudinal central axis x-x. This opens up an individually work-friendly dispensing, be it over the longer axis of the elliptical plan of the container 1 or over the shorter axis or over continuously accessible intermediate areas.

The output, as already indicated, is completely free, since a grid 21 is arranged in front of the passage area 13 of the container 1 between the inner wall of the upper half of the container shell 2 and the emptying mouthpiece pump P. This fills the passage area 13 and, against the direction of discharge arrow y, bulges slightly into the area of the filling volume. It's so stiff. Regarding the grid 21, it can be a separate component. However, it is also possible to form this basket-like structure of the upper shell half 2 in the same way. An outer ring 22 and an inner ring 23 can be seen in the composite via radial webs 24 (reference is made to FIG. 4). There are six radial webs 24, with a spacing equal to one another. Another means of dispensing the pasty mass M with virtually no residue is that the shell half 2 equipped with the emptying mouthpiece pump P is provided on the inside with support ribs 25 for the sack 10. This way, even if partially, it cannot be blocked. Rather, the inflow paths W remain free through the exposed longwall of such support ribs 25 (see FIG. 7). The sack 10 or its wall can move in an orderly manner in the direction of discharge arrow y to the passage area 13. In the case of a separate design of the grille 21, the outer ring 22 rests on heads 25 ′ of the support ribs 25 that protrude into the passage area 13. It is clamped thereon.

A total of eight support ribs 25 distributed at the same angle are realized. They can be molded on right away. The rib height increases continuously in the direction of the passage area 13 and wedges in the opposite direction on the inner surface of the shell surface 2.

As can be seen in FIG. 3, the bottom surface 26 of the sack 10 is made thicker than the wall of the sack 10 which adjoins the cup. The thickness is selected so that the collapsibility is not impaired overall, that is to say the inverted behavior is still given. The said thickening acts like a slightly stiffened trailing floor. The thickening can extend over the entire bottom surface 26 or, as shown, can only be realized as an annular path.

The head of the dispenser Sp is covered by a protective cap 27. At the same time, this avoids unwanted dispensing of the contents, for example when carrying the container 1 together with other utensils in a pocket or the like.

The assignment of the protective cap 27 is defined, for example by using the step jump forming a shoulder 28 between the connecting piece 17 and the collar 18. The cap-shaped body can be held frictionally; however, a screw connection can also be used, as is preferred here (see FIG. 8). The annular collar 18 accommodated in the socket 17 is part of an insert 29 accommodated in the dispenser head. The insert closes off on the ground side through a base 30.

Part of the above-mentioned emptying mouthpiece pump P forming cylinder 31 extends from the bottom 30.

A piston 32, which can be displaced against spring loading by means of the actuation button 19, runs in the cylinder 31. It forms the upper boundary of a pump chamber 33, the bottom end of which represents the base 30.

In the bottom 30 there is an inlet valve VI. It is a non-return valve which controls, in terms of flow technology, an annular opening 34 which is taken into account in the base 30 and which is made of rubber-elastic material.

An outlet valve V2 is located on the piston head 35. Here, too, it is a rubber-elastic component acting in the manner of a check valve.

The outlet valve V2 closes through openings 36.

An intermediate chamber 37 with flow connection to a central channel 38 of the actuation button 19 connected to the piston 32 is located behind the outlet valve V2.

The central channel 38 itself is then connected to the mouthpiece 20.

In order to form the intermediate chamber 37 as well as to receive the central channel 38, the shaft 39 of the piston bens 32 hollow. As can be seen from the drawing, the functional parts are accommodated in an operationally appropriate manner.

A connecting part 40 contributes to this. This is also pot-shaped. The pot opening points in the direction of the container 1. Its cover is in a fixed connection with the actuation button 19.

On the outside, the pot-shaped connecting part 40 is equipped with an annular stop cam 41. This interacts with a groove 42 that provides axial counter-stops on the inside of the collar 18. The ring width determines the stroke and is coordinated with the portion-forming clearing of the pump chamber 33.

The pot-shaped connecting part 40, like the ring wall of the cylinder 31 which is open in the opposite direction, contributes to the creation of a spring chamber 43. This takes up a compression spring 44. The latter loads the actuation button 19 in the direction of the basic position, as can be seen in FIG. For this purpose, the upper end spring action acts against the ceiling of the pot-shaped connecting part 40 and the end spring action facing the supply of mass is directed against the floor 30, which thus forms the stationary abutment. Special support elements such as webs, beads etc. are used. The compression spring 44 has a slight bias.

The passage of the pasty to flowable mass M into the metering area of the dispenser Sp, here first of all the pump chamber 33, takes place on a relatively broad basis and not through a centrally located access route. This is embodied specifically in that the inlet opening of the emptying mouthpiece pump P adjoining the grilled passage area 13 is designed as a ring opening 34, concentric and coaxial to the sack 10. The ring opening 34 realized in the bottom 30 is between the central area of the Bottom and the radially beyond the ring opening concentrically adjoining bottom area of webs 45. Such webs 45 arranged in the manner of spokes preferably extend at an angular distance from one another. An equally advantageous variant could consist in forming the ring opening 34 from holes in a ring of bores. Such holes are also evenly spaced in the circumferential direction.

The web-interrupted system as well as the drill collar system can optionally also be used with regard to the passage opening 36 in the vicinity of the outlet valve V2.

Both the ring opening 34 in accordance with the basic configuration described and the passage opening 36 continue in the direction of discharge arrow y into funnel-shaped extensions in the sense of countersunk bores for screws. This favors the opening lifting of valves VI, V2 during the pumping out process.

Overall, it is achieved that the limit area of the mass M "sucked" as it were in the direction of discharge arrow y of the pump P is fed over a wide front to the lock area, which, particularly in the final phase of the dispensing, results in an approximately blocking, pocket-forming tilting of the bag 10 with simple Excludes funds.

This advantageous effect is further enhanced by the fact that the ring opening has a catch funnel 46 on the side facing the mass M. It is molded onto the base 30 in the same way and has a wall which is rotationally symmetrical and diverging counter to the direction of delivery arrow y. The diameter of the ring opening 34 essentially corresponds to the diameter of the passage area 13 or the grating 21. It remains to be stated that the emptying mouthpiece pump P, completely pre-assembled, can be assigned to the neck, that is to say neck 17 of the container 1 by means of the screw connection. The thread is designated 47. At the level of the inlet valve VI there is a screw restriction 48. This continues in the direction of the housing into a shoulder wall which supports the grille 21 in the manner described above. Between the grating 21 and the bottom 30 there remains an output pre-chamber which cannot be added by the bag wall.

The output is as follows: By moving the actuation button 19 down, the volume of the pump chamber 33 is reduced. Due to the closing action of the inlet valve VI, the mass M therein cannot move in the direction of the supply. Rather, the enclosed quantity, passing through the passage opening 36, is delivered to the central channel 38 via the intermediate chamber 37, in order to emerge from there via the mouthpiece 20. This path is enabled by the opening effect of the outlet valve V2. If the actuation button 19 is released after the application, the piston 32 is moved back in the direction of the basic position shown. This leads to a negative pressure in the pump chamber 33. Accordingly, mass M is brought from the supply. The inlet valve VI opens. False air cannot enter due to the closing effect of the exhaust valve V2. The relocation takes place from the force of the compression spring 44.

All of the features disclosed are (in themselves) essential to the invention. The disclosure content of the associated / attached priority documents (copy of the prior application) is hereby also included in full in the disclosure of the application, also for the purpose of including features of these documents in claims of the present application.

Claims

EXPECTATIONS

1. Dispenser (Sp) for pasty to flowable masses (M), the filling volume of which is contained in a dimensionally stable container (1), which consists at least in half of a sack (10), which empties into a mouthpiece-side emptying

Half of the container (2) everted, characterized in that the sack (10) turns upside down due to a negative pressure generated by a mouthpiece pump (P).

2. Dispenser according to claim 1 or in particular according thereto, characterized in that an outwardly projecting edge (11) of the sack (10) in the area of the equatorial connecting joint (12) of two container shell halves (2, 3) is flange-like, the one Half (2) in the crown area carries the emptying mouthpiece pump (P).

3. Dispenser according to one or more of the preceding claims or in particular according thereto, characterized in that in front of the passage area (13) between the container shell half (2) and emptying mouthpiece pump (P) a grid (21) is arranged to support the inside out sacks (10).

4. Dispenser according to one or more of the preceding claims or in particular according thereto, characterized in that the shell half (2) equipped with the emptying mouthpiece pump (P) on its inner surface preferably has support ribs (25) extending up to the passage area (13) owns the sack (10).

5. Dispenser according to one or more of the preceding claims or in particular according thereto, characterized in that the sack (10) has a slightly stabilized bottom surface (26).

6. Dispenser according to one or more of the preceding claims or in particular according thereto, characterized in that the inlet opening of the emptying mouthpiece pump (P) adjoining the passage region (13) is designed as a web-interrupted ring opening (34), fresh and coaxial running to the sack (10).

7. Dispenser according to one or more of the preceding claims or in particular according thereto, characterized in that the ring opening (34) is formed by a bore ring.

8. Dispenser according to one or more of the preceding claims or in particular according thereto, characterized in that the ring opening (34) in the bottom, which at the same time is a pump chamber floor (30), of a collecting funnel (46) diverging against the direction of discharge (arrow y) of the masses (M) ) is arranged.

9. Dispenser according to one or more of the preceding claims or in particular according thereto, characterized in that the diameter of the ring opening (34) corresponds essentially to the diameter of the passage area (13) or grille (21).