EP0806344B1 - Method for the back-filling of an adhesive dispenser and adhesive dispenser for executing the method - Google Patents

Description

The invention relates on an adhesive dispenser with the features of the preamble of claim 1 and to a process for filling this adhesive dispenser from the rear.

An adhesive dispenser with the features of the generic term of Claim 1 is known from WO 90 050 96 A.

The problem with this known adhesive dispenser is that the bottom part is essentially anchoring-free Forms the profile part such as, for example, from FIG. 7 shows that he manually from the receptacle can be pulled out and separated from it. Critical this is particularly so in view of the fact that the standing adhesive, namely super glue, when improper Use and especially if it has the full cross section of the receptacle with the bottom part removed can cause unpredictable damage. This is true especially when children manipulate on Peel off the bottom part and get in contact with the glue come. Another disadvantage of this known Adhesive dispenser is that its manufacture elaborately designed because the bottom part and the lock are separate Represent elements that are assembled separately need what correspondingly complex process steps required.

The DE-C2-41 04 871 concerns an application device for a liquid application medium. In which known device is a liquid application medium for Writing, drawing, painting or marking certain liquids considered, but not a liquid adhesive. In the known device, a relatively small opening is used in the bottom part for filling on the back and if necessary Refill. After filling or refilling this relatively small opening through a releasable closure sealed, for example as a hinged closure over a Film hinge can be integrally connected to the bottom part. The shaft-like receiving body for the liquid and the Closure of the opening in the bottom part should in particular have oval or elongated cross-sectional shape. If the Receptacle and its bottom part are not formed in one piece are, but consist of two parts, in particular the bottom part with a body forming a hollow profile inserted into the receptacle is intended to be permanent permanent connection, for example by welding, Glue or be made using beads. This The type of connection requires a separate operation for attaching.

Now there are adhesives such as so-called Superglue, which is more fluid than water when raw, therefore have a lower viscosity than water. Which also includes especially the cyanoacrylate. This super glue is inert to the gas components of the air, polymerized but under the influence of water, including the air humidity heard. When filling an adhesive dispenser with the device features the preambles of claims 1 or 8 would indeed be the highly fluid character of the superglue in question no difficulties in filling the receptacle through the relatively small opening. It can however, difficulties arise in that the highly fluid Filling jet entrains air humidity while doing so the filling under reaction with the air humidity already undergoes prepolymerization, which is known as foam formation can express.

From DE-U1-84 04 703.8 is already a Adhesive dispenser, especially for cyanoacrylate, known has a receptacle, the cross section of which is approximately oval can be, and that through its initially still free end Opening is filled with the adhesive. After filling is the end opening of the receptacle by a Bottom part completed, that with an open hollow cylinder protrudes into the bottom part and one at the bottom level larger diameter than the open hollow cylinder trained ring flange on the end End face of the receptacle comes to rest. Thereby can, if you do without a further processing step would, the bottom part from the receptacle easily be pulled out axially again. At the market practical embodiments of this Adhesive dispenser takes place as a further processing step for the purpose of irreversible connection and sealing of Receptacle and bottom part against each other Ultrasonic welding of these components together. For the Effectiveness of this ultrasonic welding and for a Escaping trapped air when inserting the Bottom part is in the container before reaching the end stop it is necessary that between the in the Receptacle engaging hollow cylinder of the bottom part and a free of the inner wall surface of the receptacle Air gap remains. It has been shown that this Installation type within the tolerances on the one hand the dimensions of Receptacle and bottom part and on the other hand the filling Residual inclusions of air in the filled and closed Receptacle, or at least pressure from the filling mass pressing walls, which remain at Commissioning of the adhesive dispenser to an unwanted initial adhesive leakage. But this is just now highly undesirable for superglues, Application in the smallest possible amount and if possible should be applied thinly to ensure a quick and to achieve uniform through-polymerization. Besides exists with the known type of assembly Welding errors possible risk that despite the Ultrasonic welding by a user, e.g. also one Child, with relatively little effort the bottom part of Receptacle can be levered off, so that the the entire contents of the receptacle flow out at once can. This does not only mean permanent destruction the adhesive dispenser and destruction of its contents, but also represents a high level of damage, yes Potential danger for things and people.

The invention has for its object a Glue dispenser with the characteristics of the generic term of Claim 1 to create the without the mentioned risks of foaming due to unwanted pre-polymerization under action of air humidity can be filled, without doing so after final connection of the receptacle and bottom part still a post-processing step like one To need ultrasonic welding or the like. there its structure should be chosen so that even a reinforcement of securing the bottom part against unwanted separation from the receptacle is possible.

This task is solved by the identifiers Features of claim 1.

The filling process according to the characteristics of the In addition to the known filling method of DE-C2-41 04 871, the dependent claim 19 provides for the receptacle to be replaced by the one still present fill a large free end cross-section, before the bottom part is pushed into the receptacle. When inserting the base part serving as the base cover in the receiving part then becomes the filling opening in the previously known case serving relatively small opening in the bottom part as a vent for during the indentation movement in the Receptacle uses displaced air. Together with her Closure thus serves the opening in the invention Bottom part as a vent valve, which after filling is irreversibly sealed. A refill through this opening is different within the scope of the invention than in not thought of the known case.

The irreversible locking of the receptacle and bottom part saves separate welding, adhesive or beading operations and reduces final assembly of the adhesive dispenser on both mating processes when connecting the receptacle with the bottom part as also when closing their opening with the closure, as far as with the previously known applicator a plug closure is provided.

The required sealing of the receptacle against the bottom part can be done in many ways for example, by designing the locking device at the same time as a sealing device or by positive interference of the body of the base part protruding into the receptacle like a cork closure. Preferred further training are described below.

It is basically possible to close the Breather valve on the tube sheet with the closure in the same The moment or in the same work phase in which the bottom part snaps into place on the receptacle. Technically preferred and based on experience without serious However, damage to the filling of the receptacle will be a somewhat delayed closing of the Vent.

It is already known per se, a complete one Prefabricated tube on your extraction mouthpiece using a Fill the tube filling device with pastes, ointments or creams and air displaced from the tube body through an opening to escape in the outer surface of the tube body, after filling the tube this opening is permanent is closed. However, this is not how in the invention to fill an end that is still open Receiving container, which only after filling at the end closed by a bottom part pushed in like a piston on which the vent valve is formed.

It is also widely known to donate to to provide fluid substances with air-permeable valve devices, but each provided in a different context are, for example, to allow that after pressure on a tube body this returns to its original shape can decrease without vacuum retention (e.g. US-A-2 777 612, reference number 16). It is also known on the ground a cartridge-like receptacle for adhesive one Provide opening only when the cartridge is started up to apply glue is opened to the mouthpiece of the receptacle to allow adhesive to flow out (DE-A1-39 37 298, the filling of the adhesive dispenser according to the invention, reference number 19).

The invention is particularly easy to carry out if the glue dispenser is lying with its back on top is filled so that the receptacle then has the character an upright open vessel, the later removal opening accordingly arranged below and is closed when filling. After filling then the bottom part becomes cork-like through the filling opening in the previously open end upper end of the receptacle inserted and the displaced air through the opening let out in the cork-like container bottom. In the This opening then becomes irreversible through the closure tightly closed. If so, like that already in the case of the known application device, the bottom part and its closure are pre-assembled, it is required for No independent closing of the vent valve in the bottom part Partly, which would require separate storage.

Likewise, in the final state of "corking" the receptacle through the bottom part no separate Post-processing for the final attachment of these two Share each other if just at the end the insertion movement of the bottom part on the receptacle is snapped into place. According to the invention, active ones are used for this purpose Snap on both on the receptacle and on Bottom part can be arranged.

Claim 1 relates to the preamble optionally also those already known Applicator option provided that the bottom part with a piston-like design designed as a hollow profile Body protrudes into the receptacle. The constructive further training is based on this addition the formation of the locking device according to claims 2 and 3 specially related. Then there is a tongue and groove engagement provided that in the training according to claim 4 has a particularly good snap effect. Such Training of the locking device is also possible if the piston-like body of the base part does not form a hollow profile, but is, for example, massive. Training as a hollow profile, however, to save mass Donors preferred.

From DE-A1-36 35 849 a donor is per se Output pasty masses known, each by pressing a push button step by step out of the dispenser housing a piston be pushed out. In the inventive Such a piston actuation is not in the glue dispenser Considered, not even wanted; rather be the minimum required amount of superglue sensitive manual pressure on the outer wall of the Take the receptacle carefully and carefully out of it. The well-known donor for pasty masses is already through filled the end opening of the dispenser housing before the Piston in the dispenser housing until it is in contact with the filled one pasty mass is inserted. Escaping air is thereby by a central which can later be closed by a stopper Opening in the piston drained. Different from the bottom part of the adhesive dispenser according to the invention is then, as mentioned, the piston for taking out the pasty mass via a Step mechanics continue to be used while the On the contrary, adhesive dispenser according to the invention and irreversibly with comparatively minimal construction effort locked.

Claims 20 and 21 relate to different work steps for the preferred preparation of the back Filling the glue storage in a way that is practical without stockpiling elements of donor construction Filling in total after a minimal number of work steps can be done. In particular, this also applies to Savings on injection mold costs and generally on savings of costs in the area of sorting and completion systems targeted. The connector technology used ensures this for vacuum-tight packaging of the adhesive in the adhesive dispenser and provides, also together with described below Continuing education, sure that the express desired one-time packaging opening without tools and thus damage to third parties or persons Avoided as much as possible by unintentionally escaping adhesive becomes.

Regardless of whether the locking of the bottom part in the receptacle itself a sealing function for the finished adhesive dispenser or not what especially in the otherwise preferred case of claim 4 below Under certain circumstances, a seal is required 5 preferred. This is not just a reliable one End seal securely, but also seals during the Insertion movement of the bottom part in the receptacle and thus ensures reliable air displacement through the Bleed valve without needing an excessive injection pressure, like this with total excess in the receptacle to be inserted body of the bottom part would be the case.

It has already been mentioned that the invention Adhesive dispenser as a disposable container as tamper-proof as possible should be. It has been shown that through clumsy Manipulation may be the positive gap between the receptacle on the one hand and the one inserted into it Body of the bottom part, on the other hand, pushed apart can be. This danger can be avoided by appropriate Cross-sectional shape of the adhesive dispenser or the receptacle and the body of the base part engaging in it counteract this by replacing a rectangular one or flattened cross-section a radius-related oval or otherwise rounded, in the extreme case cylindrical, Cross section chooses. But there is still one Residual risk of unwanted bursting of the adhesive dispenser through clumsy manipulation. This danger will counteracted by the measure according to claim 5, which a burst of play between the bottom part and the Receptacle using a special holding device prevented.

Claims 6 to 9 describe preferred configurations the adhesive dispenser in the area of the receptacle, which the recording function and the filling function perfectly match each other.

Claim 8 forms the already in the known Applicator provided hollow body of the bottom part, the is pushed into the receptacle, further in that that it is completed at the end. Is particularly preferred the embodiment for the application according to the invention the dispenser as a pipette according to claim 9, be it oval or cylindrical, what optimally links both of these points of view. The execution of the invention is typical Adhesive dispenser as a pipette with a volume of 10 ml or as a 10 g pipette.

Describe the remaining claims 10 to 18 preferred embodiments of the invention Vent valve on the bottom part. This can according to claim 28 entirely in an end concave recess in the bottom part be safe without, as in the case of the applicator according to the generic DE-C2-41 04 871 with the closure to contribute to the end stand area of the applicator itself.

Fig. 1 eine teilweise in Längsrichtung geschnittene Seitenansicht des Hauptkörpers eines erfindungsgemäßen Klebstoffspenders ohne eingeschobenes Bodenteil;

Fig. 1a und 1b je eine Ansicht des Hauptkörpers gemäß Fig. 1 von der Entnahmeseite (Fig. 1b als Ansicht von Fig. 1 von unten) und von der zum Befüllen dienenden entgegengesetzten Endseite (Fig. 1a als Draufsicht von Fig. 1) in gegenüber Fig. 1 jeweils etwas verkleinertem Maßstab;

Fig. 1c die Einzelheit A in Fig. 1 in vergrößertem Maßstab;

Fig. 2 einen Längsschnitt durch das in den Hauptkörper nach Fig. 1 an dessen offenem Ende einschiebbare Bodenteil;

und Fig. 2a eine Draufsicht in Fig. 2 von oben des Bodenteils gemäß Fig. 2.

The invention is explained in more detail below with the aid of schematic drawings using an exemplary embodiment. Show it:

Figure 1 is a partially longitudinally sectioned side view of the main body of an adhesive dispenser according to the invention without inserted base part.

1 a and 1 b each show a view of the main body according to FIG. 1 from the removal side (FIG. 1 b as a view of FIG. 1 from below) and from the opposite end side serving for filling (FIG. 1 a as a top view of FIG. 1) in compared to Fig. 1 each a slightly reduced scale;

1c shows the detail A in FIG. 1 on an enlarged scale;

FIG. 2 shows a longitudinal section through the bottom part that can be inserted into the main body according to FIG. 1 at its open end;

and FIG. 2a shows a top view in FIG. 2 from above of the base part according to FIG. 2.

A pipette-shaped adhesive container is made two components made of thermoplastic and compared to the adhesive composed of inert plastic, namely the receptacle 2 according to FIG. 1 and the bottom part 4 according to FIG. 2.

The receptacle 2 encases the receiving space 3 of the adhesive with an oval sleeve 6, with the exception the special features described below along their dash-dotted axis constant cross-section Has.

At its one end in FIG. 1 the sleeve goes over a still with oval cross section and tapering in an axial continuation of the sleeve 6 at 45 ° sloping shoulder 8 into an end wall 10, which is designed as an oval at right angles to the axis of the pipette is.

This end wall 10 settles in the axial direction a non-oval mouthpiece 12 from the pipette. This extends with a mirror symmetry to the pipette axis elongated rectangular neck piece 14 along the Axis of the pipette away from the end wall 10 and goes in a tapping nipple 16 tapering towards the tip each circular cross-section over, for later Adhesive removal tip before removal by a Closure 18 is closed, for example in shape a cylindrical twist-off nipple with a predetermined breaking point.

From Fig. 1a it can be seen that in the mouthpiece 12 of the initially columnar oval receiving space 3 into one continues approximately rectangular terminal space 20, which then in the circular-conical interior 22 of the extraction nipple 16 in Direction to the tip.

The surface shape of the mouthpiece 12 is selected so that that a plug closure, not shown, for protection of the mouthpiece 12 before and after use is attachable. As a centering aid when attaching the Plug closure has the neck piece 14 on the outside of the two short sides of the rectangular cross-section each have an inlet slope 24 on. On the two long sides of the rectangular Neck piece 14 is one along the axis of the Pipette-extending raised H-profile formed, which in 1 an upper recess 26 and a lower recess 28 between the two parallel ones Ribs of the H-profile forms. The upper recess 26 is on its axially outer free end with a run-in slope 30 provided and cooperates with the outer bevel 24 of the Neck piece 14 when aligning the plug closure at the Attach to the mouthpiece 12. In the fully attached Lock position can then be the plug lock with a corresponding detent in the serving as a recessed recess engage lower recess 28, with a circumferential seal of the mouthpiece 12 against the plug closure via a removal nipple 16 circumferential sealing bead 32 takes place.

At its free end facing away from the mouthpiece 12 the entire end-side sleeve cross section 52 is free, such that after filling the receiving space 3 with adhesive the bottom part 4 along the serving as a guide for the bottom part 4 Inner wall 34 of the sleeve 6 are inserted and then in there the end position of the insertion movement is tight and captive can be assembled.

For this, the overall configuration of the bottom part 4 at least essentially complementary in the outer areas chosen oval.

So the bottom part 4 according to FIG. 2 is of a hollow profile formed, the one stepped in the axial direction outside has oval outer sleeve that is in the range of their gradation closed like a bulkhead from the bottom 36 of the adhesive container is. The upper end 38 in FIG. 2 of the sleeve of the base part 4 as a slide-in guide is somewhat opposite the inner surface 34 of the sleeve 6 reset to after filling the Recording room 3 a tolerance compensating "threading" the To facilitate bottom part 4 in the sleeve 6. In the end position the assembly of the bottom part 4 in the sleeve 6 snaps an outer annular bead 40 on the circumference of the hollow profile in axial height of the bottom 36 or from the outside thereof Bottom surface in a locking groove 42 in the inner wall surface 34 the sleeve 6 and fixes the end position of the bottom part 4 in the receptacle 2 final and captive. To make things easier the snap of the annular bead 40 in the locking groove 42 is the annular bead 40 according to FIG. 2a in two resilient Bead flaps 40a divided in the middle of the distance between both elongated sides of the oval cross section have and are mirror symmetrical to the axis around the extend narrow cross-sectional sides of the oval. The bead flaps 40a are thus on the hollow profile of the bottom part 4 as Circumferential segments arranged.

The lower in the axial direction or in Fig. 2 lower End 44 of the bottom part 4 is so narrow within the tolerances adapted as possible to the inner wall surface 34 of the sleeve 6 and is outside the bottom 36 outside with two encircling Providing sealing beads 46 which are axially offset from one another and cooperate sealingly with the inner wall surface 34 of the sleeve 6. It is important that the sealing engagement of the sealing beads 46 on the inner wall surface 34 of the sleeve 6 even when deforming external influences is kept permanently. A holding device is used for this purpose, which is shown in FIGS 1c on the one hand and 2 on the other hand described below becomes.

First of all, the receptacle 2 is not far from the free end of the sleeve 6, but with some axial reset opposite this free end, as a ring-shaped process at the end of the receptacle 2 on this a circumferential outer flange 48 formed of an annular end Has projection 50, but not to the level of open cross section 52 of the sleeve 6, but about a wall thickness is set back from this. Thereby the free end of the sleeve 6 is opposite the end Projection 50 a little ahead.

On the other hand, the bottom part 4 also points outwards End of its lower outer end 44 a circumferential outer flange 56, which is at a distance from the outer surface of the end 44 and thus forming an opposite of this outer surface arranged circumferential slot 56 a circumferential recess 58 forms that with an outer circumferential step 60th is trained.

It can be seen from FIG. 2 that the one sealing bead 46 formed in the middle axial height of the circumferential slot 57 is higher and the other sealing bead in FIG. 2 thus arranged further inside outside the recess 58 is.

The assembly of the glue dispenser is the end 44 of the hollow profile of the bottom part 4 piston-like within the Inner surface 34 guided at the free end of the sleeve 6. In the final assembly position in which the annular bead 40 with its circumferential segments 40a snapped into the annular groove 42 the free end 52 of the sleeve 6 engages in the slot and is thereby inside of the end 44 and outside of the recess 58 held, which in turn additionally held is that the end projection 50 on the outer flange 48 Sleeve 6 engages in the circumferential step 60 of the recess 58.

In terms of process engineering, the recording room is first 3 of the receptacle 2 through the piston-free inner cross section the sleeve 6 filled with adhesive before the piston-like Bottom part with its end 38 in the sleeve 6 of Receiving container 2 of the sleeve 6 inserted and axially in this is inserted like a piston, the bottom 36 as Piston surface serves. To do so until the final click Being able to dislodge trapped air is the bottom 36 provided with a vent valve 62, which after snapping of the bottom part 4 in the receptacle 2 with the Assembly means is closed.

To form the venting valve 62, the bottom has 36 of the base part 4 has a central circular opening 64 on the axially through a sleeve-like from the bottom 36 to the outside Ranging cylindrical insertion guide 66 is extended, which on his Free end with a circumferential inner depression 67 is. This insertion guide 66 is used for insertion a pin-like closure 68, which in the Slide-in guide 66 is axially displaceable. The closure 68 has the shape of an inside open and on its outside lying front 69 closed hollow cylinder, the its one flank with an inner free end of the Hollow cylinder open longitudinal slot 70 is provided. This Longitudinal slot ends in a radially inward and outward direction trending slope. Their outer edge controls together the tapered bottom 76 of the depression 67, by the air passage between the slide guide 66 and the shutter 68 is possible, the starting closing position of the vent valve 62.

At its free end has the pin-like closure 68 a thickened around the front Head 78, which leads to a transition bevel 80 inwards normal outer cross section of the pin-like closure 68 Has. In the fully inserted position of the pin-like closure 68 this transition slope 80 comes at the beveled Reason 76 of the depression 67 to the plant. Sealing the Closure 68 against the bottom part 4 takes place through several, here two, on the outer circumference of the pin-like closure 68 circumferential sealing beads 82, which are then inserted in the End position of the closure with the no longer recessed inner surface 84 of the insert guide 66 in sealing engagement stand. In this end position, the head 78 is in the Sink so largely or completely safe that a new one Open the vent valve by pulling out the Tang is practically out of the question by manipulation. If desired, you can get this final closed position also by locking means, not shown, between the closure 68 and the slide-in guide 66 take effect, secure additionally.

The trained as a hollow profile as described Closure 68 is so in the cylinder neck or the sleeve 66 as a pin so axially displaceable that at axially outer Positions air from the receiving space 3 through the longitudinal slot 70 on the closure 68 can escape to the outside while at in the insertion of the cylinder socket or Sleeve 66 inserted pin of the longitudinal slot sealed is. Fig. 2 shows the preassembled position of the Closure 68 in the insertion guide 66 in which the cylinder neck or the sleeve 66 and the protruding part of the pre-assembled pin-like closure 68 completely within the outer concave recess 72 with fully open Longitudinal slot 70 are arranged, in alignment with the Face 69 of the hollow profile of the closure 68 with the outer End surface 86 of the outer flange 56 on the bottom part 4. So it is guaranteed that already in the pre-assembled open position the vent valve 62 no element of the same protrudes from the bottom surface of the adhesive dispenser. In this pre-assembled open position of the vent valve is already the axially inner outer peripheral surface 88 of pin-like closure 68 in holding frictional Engagement with the inner surface 84 serving as a slide guide the slide-in guide 66.

Claims (20)

1. An adhesive dispenser, in particular for cyanoacrylate, comprising a receiving container (2) which is sealingly closed by an inserted bottom portion (4) - which in particular projects into the receiving container with a plunger-like body possibly in the form of a hollow profile member - and which in turn is provided with an opening (64) which is sealingly closed by a closure (68) which in particular is pre-mounted to the bottom portion (4),

   wherein in particular the co-operating engagement surfaces of the receiving container (2) and the bottom portion (4) are of an oval shape, and

   wherein provided on the plunger-like body of the bottom portion (4) is at least one peripherally extending sealing bead (46) which is in sealing engagement with the inside wall (34) of the receiving container (2),

      characterised in that the bottom portion (4) is irreversibly connected to the receiving container (2) by a detent arrangement (40, 42) and that said irreversible connection is afforded by virtue of the fact that

   there is provided a holding device for the clearance between the bottom portion (4) and the receiving container (2), wherein an annular extension (52) at the end of the receiving container (2) engages tongue-and-groove-like into a peripherally extending slot (57) in an outside flange (56) of the bottom portion (4),

   an outside flange (48) is provided on the receiving container (2) and with an annular projection (50) at its end embraces the outside of an outside flange (56) of the bottom portion (4), and

   the annular projection (50) at the end of the outside flange (48) of the receiving container (2) engages into a peripherally extending step (60) of the outside flange (56) of the bottom portion (4).
2. An adhesive dispenser according to claim 1 characterised in that the detent arrangement which is in the form of a groove-and-tongue connection has a detent tongue (40) which extends on the plunger-like body of the bottom portion (4) therearound and a complementary detent groove (2) in the inside wall (34) of the receiving container (2).
3. An adhesive dispenser according to claim 1 or claim 2 characterised in that the peripherally extending detent tongue (40) is subdivided into a plurality of peripheral segments (40a).
4. An adhesive dispenser according to claim 2 or claim 3 characterised in that provided on the plunger-like body of the bottom portion (4) is a series, arranged in succession in the direction of insertion of the bottom portion (4) into the receiving container (2), of sealing beads (46) which are in sealing engagement with the inside wall (34) of the receiving container (2).
5. An adhesive dispenser according to one of claims 1 to 4 characterised in that the filling opening is formed by the entire open cross-section (52) of the receiving container (2) which preferably has said open cross-section (52) over the predominant length of its receiving space (3).
6. An adhesive dispenser according to one of claims 1 to 5 characterised in that the inside wall surface (34) of the receiving container (2) is in the form of an insertion guide for the bottom portion (4).
7. An adhesive dispenser according to one of claims 1 to 6 characterised in that the body of the bottom portion (4), which projects into the receiving container (2), is a hollow profile member, preferably a hollow cylinder or a hollow oval, which is closed near its inner end (at the bottom 36).
8. An adhesive dispenser according to one of claims 1 to 7 characterised in that the receiving container (2) is in the form of a pipette.
9. An adhesive dispenser according to one of claims 1 to 8 wherein the closure (68) is in the form of a stopper which is inserted into the vent opening, in particular in the form of a hollow profile member which is closed on its outside, preferably a hollow cylinder, characterised in that provided in the wall of the hollow profile member is at least one valve opening (70) which is sealingly closed off outwardly when the stopper (68) is inserted into the opening (64).
10. An adhesive dispenser according to claim 9 characterised in that the valve opening is in the form of a longitudinal slot (70).
11. An adhesive dispenser according to claim 10 characterised in that the longitudinal slot (70) is open towards the inner end of the stopper (68).
12. An adhesive dispenser according to one of claims 9 to 11 characterised in that in the relieved condition the stopper (68) is oversize in relation to the opening (64) and is held therein in compressed positively locking relationship.
13. An adhesive dispenser according to one of claims 1 to 12 characterised in that the opening (64) is provided with an insertion guide (66) for its closure (68).
14. An adhesive dispenser according to one of claims 1 to 13 characterised in that the bottom portion is of an outwardly concave configuration (72).
15. An adhesive dispenser according to at least one of claims 9 to 14 characterised in that the insertion guide (66) for the closure (68) of the opening (64) of the bottom portion (4) is arranged within the concave outer recess (72) thereof.
16. An adhesive dispenser according to claim 15 characterised in that the insertion guide is in the form of a sleeve portion (66) projecting outwardly from the end wall (36) of the bottom portion (4).
17. An adhesive dispenser according to claim 15 or claim 16 characterised in that the insertion guide (66) together with the closure (68) is concealed within the concave recess (72) in the bottom portion (4).
18. A method of rear-end filling of the adhesive dispenser according to one of claims 1 to 17, in particular for cyanoacrylate, wherein firstly the receiving container (2) is filled with the adhesive through the end opening (52) of the receiving container (2), which opening is still free, then the bottom portion (4) is inserted into the receiving container (2) and sealingly connected thereto, wherein air which is displaced out of the receiving container (2) during the insertion movement of the bottom portion (4) thereinto is let out through the opening (64) in the bottom portion (4), wherein at the end of the insertion movement the bottom portion (4) is irreversibly latched to the receiving container (2), wherein in the final phase of the insertion movement of the bottom portion (4) into the receiving container (2) the free opening (64) thereof is irreversibly sealed off by the closure (68), wherein the bottom portion (4) and the closure (68) for the opening (64) thereof are formed separately and the closure (68) is pre-fitted to the bottom portion (4) before insertion of the bottom portion (4) into the receiving container (2), and wherein the bottom portion (4) and the closure (68) of the opening (64) thereof are formed in the same production mould and are pre-assembled upon removal from the production mould.
19. A method according to claim 18 characterised in that the bottom portion (4) and the closure (68) of the opening (64) are formed in different zones of the production mould and during removal from the mould the closure (68) of the opening (64) is displaced in relation to the latter.
20. A method according to claim 18 or claim 19 characterised in that in the pre-assembly operation the bottom portion (4) is moved relative to the closure (68) of the opening (64).

Images