EP0414198B1 - Verfahren und Vorrichtung zum Füllen von Quetschtuben - Google Patents

Verfahren und Vorrichtung zum Füllen von Quetschtuben Download PDF

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Publication number
EP0414198B1
EP0414198B1 EP90115951A EP90115951A EP0414198B1 EP 0414198 B1 EP0414198 B1 EP 0414198B1 EP 90115951 A EP90115951 A EP 90115951A EP 90115951 A EP90115951 A EP 90115951A EP 0414198 B1 EP0414198 B1 EP 0414198B1
Authority
EP
European Patent Office
Prior art keywords
tube
apron
pasty mass
filled
plastic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP90115951A
Other languages
German (de)
English (en)
French (fr)
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EP0414198A1 (de
Inventor
Heinz Hartmann
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Individual
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Individual
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Publication of EP0414198A1 publication Critical patent/EP0414198A1/de
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Publication of EP0414198B1 publication Critical patent/EP0414198B1/de
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B3/00—Packaging plastic material, semiliquids, liquids or mixed solids and liquids, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
    • B65B3/04—Methods of, or means for, filling the material into the containers or receptacles
    • B65B3/16—Methods of, or means for, filling the material into the containers or receptacles for filling collapsible tubes

Definitions

  • the invention relates to a method for filling a squeeze tube according to the preamble of claim 1 and an apparatus for performing the method.
  • ointment bowls jars
  • tubes ointment bowls
  • the tube usually requires filling devices that are sometimes difficult to use after filling, in which mostly there is also a considerable amount of ointment that cannot be placed in the tube according to the device.
  • the device from DE-PS 29 08 703 brought a significant improvement in the filling of tubes.
  • a thin, single use plastic apron is pulled from the screw cap side over the tube to its still open bottom end, the pasty mass is in the apron filled and transported by squeezing the apron into the tube.
  • This device allowed for the first time an ointment or other pasty mass to be transferred practically completely manually into a tube without subsequent cleaning work being necessary.
  • the inner tube end was wetted with ointment and, accordingly, tubes with a so-called latex ring could not be used with advantage.
  • This latex ring is an approx.
  • 1.5 cm wide coating of latex mass on the still open inner wall end of the tube and has the purpose of enabling an additional seal by gluing when the tube is closed by pressing it together. This does not succeed if the ointment or pasty mass has previously greased the latex ring when filling.
  • the invention has for its object to provide a method with which tubes can be filled in a simple manner, wherein cleaning work should not be necessary or should only be minimal.
  • the ointment or paste-like mass should be able to be introduced into the tube with almost no loss, and it should be possible to carry out all work in particular by hand and without great material expenditure.
  • the tube should also be fillable in such a way that the inside of the tube end to be closed is not wetted with ointment.
  • the object of the invention is also an apparatus for performing the method.
  • the tube 1 shows a tube 1, to the still open bottom end 2 of which a thin plastic apron 3 is attached.
  • the tube 1 has at its end 2 inside a latex ring 4, which consists of a type of latex compound that is designed to be self-adhesive, so that when the tube is closed, an additional seal is created by gluing the end 2 together. Only latex mass adheres to the latex mass of the latex ring 4, but not, for example, smooth plastic.
  • the other end of the tube 1 can be closed with a closure cap 5, which is a conventional screw closure.
  • a tube 6 is provided which, for better handling of the tube, has two finger slots 7 at one end opposite, through which the tube 1 can be gripped with the fingers and pulled out of the tube 6.
  • the inner diameter of the tube 6 is dimensioned so that the tube 1 with the plastic apron 3 can be clamped but slidably inserted into the tube 6.
  • the tube 6 is longer (for example about 5 cm), and the plastic apron 3 is about twice as long.
  • the section of the plastic apron 3 which is put over the latex ring 4 is determined by the longer dimensioning of the tube 6 in relation to the tube 1.
  • the latex ring 4 can have a width of approximately 1.5 cm.
  • the tube end should therefore be kept about 3 - 4 cm free of ointment on the inside.
  • Approximately double the amount of the plastic apron 3 should be reserved accordingly for the indentation. This is achieved by dimensioning the tube 6 about 5 cm longer.
  • a length corresponding to the filling height of the tube must be reserved in the plastic apron 3 for filling in the paste-like mass, and the end of the plastic apron 3 must still protrude for handling after the paste-like mass has been poured in, the plastic apron must therefore be about twice as long overall like the complete tube.
  • this is approximately 23 cm for the plastic apron 3
  • the filling height in the tube being approximately 6.5 cm.
  • the length of the plastic apron changes accordingly.
  • the lower opening 8 of the plastic apron 3 is dimensioned somewhat smaller than the tube 1, the remaining part of the plastic apron is somewhat larger.
  • the plastic apron 3 can therefore be stretched under elastic stretch from the screw closure side of the tube 1 via the lower opening 8 to the end 2 of the tube 1 and sits there over a certain width (about 5-50 mm, preferably 25-35 mm) sealing and clamping.
  • the tube 1 is then inserted into the tube 6 until the cap 5 is flush with the end of the tube 6 provided with finger slits 7.
  • the part of the plastic apron 3 protruding from the tube 6 is turned over the end of the tube 6 (FIG. 1a). Now the tube is pulled out of the tube a little until the cap 5 is exposed.
  • the tube 1 On the sealing cap 5, the tube 1 is rotated with respect to the part of the plastic apron 3 placed over the tube 6 by approximately 10/2 revolutions. This causes the funnel to twist to a length of approx. 5 - 6 cm. This is the plastic apron area, which is provided for the protection of the latex ring 4 and therefore must not be wetted with pasty mass.
  • a pasty mass 10 is now poured into the upper opening 11 of the plastic apron 3 in portions, the upper edge 12 of the tube 6 serving as a fixed scraper edge (FIG. 1b).
  • the area 13 of the plastic apron 3 receiving the pasty mass 10 is also lengthened, so that again and again new space is created for the pasty mass to be refilled. This is repeated until all paste-like mass 10 which is to get into the tube 1 is in the plastic apron 3 (Fig. 1c).
  • the cap 5 is removed and the tube 1 is pressed down by means of a stamp 17.
  • the stamp 17 has a cover 18, in the middle of which there is an opening 19 which is smaller than the screw thread 20 of the tube 1.
  • the tube 1 can also be inserted into the tube 6 without a stamp 17 with the fingers through the finger slots 7.
  • the previously twisted section 21 first protrudes over the latex ring 4 and about 3-4 cm further into the interior of the tube 1.
  • the air inside the tube can thereby pass through the opening 19 escape.
  • the tube 1 is pushed onto the base 15 by means of the stamp 17 (FIG. 1e), the tube 1 is lifted off the base 15 and the pasty mass 10 is pushed completely into the tube 1 by means of the stamp 17 (FIG. 1f).
  • the tube 1 is closed again with the cap 5 and turned upside down.
  • the end 2 with the latex ring 4 is pressed together and the plastic apron 3 is pulled out of the tube 1 at its end 14 by the constriction thus created.
  • the ointment residue on the plastic apron 3 is now completely stripped into the tube 1.
  • the latex ring 4 closes by gluing.
  • the latex ring 4 is not wetted with the pasty mass 10 on its adhesive surfaces.
  • the plastic apron 3 can also be pulled out of the tube 1 without pressing the end 2 together, air then passing between the plastic apron 3 and the pasty mass 10.
  • the tube 1 can then - as with conventional filling from the screw cap end with a press - be closed by compressing the end 2.
  • a modification of the method is that the pasty mass 10 is introduced into the tube not by pressing but by suction.
  • the pasty mass is incorporated into the Plastic apron brought, but then, preferably via a flexible, somewhat elastic, transparent plastic tube, which is pushed over the screw thread 20, vacuum is applied to the screw cap opening of the tube, the unwetted portion 21 and then the pasty mass 10 are sucked into the interior of the tube .
  • the suction process can be checked optically from the end 2. Since only a low vacuum of approx.
  • the tube 6 is preferably made of a transparent material, e.g. Acrylic glass, made so that the final twist and the introduction of the pasty mass can be easily tracked and checked.
  • a transparent material e.g. Acrylic glass
  • the pasty mass for example a medical ointment
  • the tube 6 can be portioned using the tube 6. This can be done by placing the entire device on a balance and weighing, for example, 30 g into the plastic apron 3. If 30 g are now to be repeatedly filled into a tube, a marking 22 (see FIG. 1 c) is glued onto the transparent tube 6, which indicates that 30 g of pasted mass 10 has been reached when the plastic contactors are filled. Due to the cylindrical shape of the tube 6, this can be used like a measuring cylinder, the scale on the tube running from top to bottom.
  • the method according to the invention can thus, except in the recipe, i.e. the manufacture and filling of a single drug, e.g. 1 x 30 g of a medical ointment, can also be used in the working area of the defecture, i.e. for packaging a larger number of a drug, e.g. 10 x 30 g of a certain medical ointment, which can also be used in a larger production quantity, e.g. can be removed from a 1 kg or 10 kg storage container.
  • a single drug e.g. 1 x 30 g of a medical ointment
  • the plastic apron 3 is not fastened on the outside 2 at the end 2 of the tube 1, but inside the tube.
  • a tube 23 is required, which can be inserted with a precise fit into the still open bottom end 2 of the tube 1 and which holds the plastic apron 3 inside the tube.
  • the tube 23 is advantageously made of a somewhat elastic material.
  • the plastic apron 3 which - as described above - can be made somewhat shorter, is pulled through the tube 23 and through an opening 24 which is inserted into the end 2 of the tube 1, inverted (Fig. 2a).
  • the tube 23 is inserted with the opening 24 into the end 2 and e.g. fixed by clamping or screwing. Due to the pressure of the tube 23, the plastic apron 3 lies tightly against the inner wall of the tube (FIG. 2b).
  • the pasty mass 10 can be filled in by means of the spatula 9 either - as described above - with a tube 6 which can be pushed over the still open bottom end 2 of the tube, or also by means of a filling funnel 25, which is shown in FIG. 4 .
  • the filling funnel 25 has a lower section 26 which is essentially cylindrical and can be inserted into the tube 23.
  • An upper section 27 of the hopper 25 is funnel-shaped.
  • a gap 28 runs through the entire hopper 25, through which the plastic apron 3 can be inserted into the hopper.
  • the tube 1 is placed in a stand 29, the plastic apron 3 in the Filling funnel 25 inserted and turned over its edge 30.
  • the hopper 25 with the plastic apron 3 is rotated relative to the tube 1 and the tube 23, which holds the lower opening 8 of the plastic apron 3, by about 4/2 revolutions, so that a twist 16 is produced. A few revolutions are sufficient for this twisting, since this twisted section is not required for covering the latex ring 4.
  • the pasty mass 10 is poured into the plastic apron 3 by means of the spatula 9, the edge 30 of the funnel 25 serving as a scraper edge.
  • the filling funnel 25 is raised and compressed a little so that the part of the plastic apron 3 filled with pasty mass 10 is sausage-shaped (FIG. 2d ).
  • the cap 5 is then screwed back onto the tube 1 and the tube 23 is detached from the tube 1 by turning.
  • the film also stands out from the contents. What remains is the filled tube 1, the latex coating of which is not wetted with the filling material (FIG. 2g).
  • the tube 1 can then - like the conventionally filled tube - be closed by compressing the latex ring and possibly folding the end 2.
  • FIG. 3 shows possible embodiments of the tube 23.
  • the tube 23 has a flanged edge 32 with which it is seated at the end 2 when it is introduced into the tube; a hold of the tube 23 in the tube is ensured by a short threaded part 33.
  • This threaded part 33 can be easily screwed into the thin tube material - usually aluminum. Any latex layer that may be present is not damaged.
  • 3b shows a tapered tube 123, the upper section 132 of which has a larger outside diameter than the inside diameter of the tube.
  • the plastic apron 3 is simply clamped into the tube with this conical tube.
  • Fig. 3c shows a tube 23 designed for single use, which can be designed according to Fig. 3a or 3b.
  • the tube is preferably made of plastic, the plastic apron 3 having already been fastened to the lower edge 34 of the tube 23, preferably by clamping or welding.
  • This embodiment is particularly easy to handle, since there is no need to pull the plastic apron 3 into the tube 23 and to clamp the plastic apron 3 inside the tube 1 for the person filling the tube.
  • This method allows the pasty mass 10 to be introduced into the plastic apron 3 on a balance, so that a certain amount of pasty mass 10 can be easily measured by weighing and then practically completely transferred into the tube.
  • the tube 23 can be inserted into the stand 29 and the hopper 25, so that all parts are always within reach. A special workplace is not required to fill the tube here either.
  • FIGS. 1a-1c the upper plastic apron end 114 then being twisted.
  • a tubular plastic bag (not shown) can also be assumed, which can be filled by means of a tube 6, as already described.
  • the pasty mass 10 with the plastic apron 103 is introduced simply by placing the tube 106 on the still open end 2 of the tube 1, the plastic apron 103 with the pasty mass 10 falling into the interior of the tube by gravity.
  • the cap 5 must be removed so that - as shown in FIG. 5c - the twisted plastic apron end 114 can slide through the screw cap opening 35 of the tube 1.
  • This plastic apron end 114 protruding from the screw closure opening 35 can be cut off immediately after insertion or when the tube is used for the first time.
  • the tube 1 is closed at its end 2 by compressing the latex ring 4 as described.
  • the pasty mass 10 remains in the plastic apron 103 and is expressed through the end 114 thereof.
  • Fig. 6 shows a further possibility of introducing a pasty mass 10 into a tube 1.
  • a long, tubular plastic apron 203 is used, which protrudes with its beginning 236 from the screw closure opening 35 of the tube 1 before filling and preferably already afterwards the tube production is packaged and shipped (Fig. 6a).
  • the plastic apron 203 can be sterile and closed at both ends. This plastic apron is then only opened immediately before filling, for example by cutting open, which ensures a completely sterile filling and no contamination of the interior is possible during the transport of the empty tube 1.
  • the beginning 236 of the plastic apron 203 is clamped with the closure cap 5 to fill it.
  • the plastic apron end 214 is pulled out of the still open bottom end 2 of the tube 1 and through a short tube 206 and placed over its upper edge 212.
  • the tubular plastic apron 203 opens within the short tube 206 over several cm, into which the pasty mass 10 is filled by means of the spatula 9 - as described above (FIG. 6b). After the pasty mass 10 has been poured into the tubular plastic apron 203, its end 214 is closed, for example by twisting or melting.
  • the portion 231 of the tubular plastic apron 203 filled with pasty mass 10 is now brought into the interior of the tube 1 and the beginning 236 is shortened towards the tube. This shortening can be done by cutting or melting.
  • the pasty mass 10 remains hermetically sealed; for the first removal of the pasty mass, the melted part of the tubular plastic apron 203 can be cut off.
  • the end 2 of the tube can be closed as described.
  • the tube 206 can also be omitted and the pasty mass 10 directly on the still open tube edge can be stripped from the spatula 9 into the plastic apron 203, which for this purpose was previously folded over the lower opening 8 of the tube 1. By pulling at the beginning 236, the pasty mass 10 is gradually drawn into the tube 1 during filling.
  • FIGS. 5 and 6 have the advantage that practically the entire tube is protected from contact with the pasty mass by the plastic apron. Only a small part of the screw closure opening 35 can still be wetted by the pasty mass.
  • the previously common contact of the pasty mass with the tube represents a certain problem in tube production, which was countered by painting the inside of the tube so that any aggressive substances present in the pasty mass, e.g. Salicylic acid, not the tube material, which is mostly aluminum, can attack in a chemical reaction.
  • the plastic apron now offers protection, so that less expensive tubes without interior painting, if necessary with a plastic thread 20, can also be used.
  • costs can be saved retrospectively in tube production.
  • Another advantage of this method is that there is no waste when filling the tubes because the plastic apron remains in the tube.
  • a modification of the method according to FIGS. 5 and 6 is possible in such a way that the plastic apron can be removed from the tube again, leaving behind the pasty mass.
  • a colored marking on the plastic apron can indicate the end so that the constriction of the screw closure opening 35 is released in order to avoid contact with the pasty mass.
  • a maximum of approximately 500 mg of paste-like mass remain on the plastic apron, which are then not available when the tube is used.
  • approx. 2.7 g remain in conventional filling machines, i.e. that when filling a 10g tube 27% more filling material is required, which must then be added to the waste with solvents and cleaning agents.
  • Another advantage is that dusting of the inside of the tube can be largely prevented with the plastic aprons or (as shown in FIGS. 5 and 6) that the pasty mass can be introduced into a completely clean or sterile container.
  • the plastic apron can now be fitted onto the end of the tube immediately after the tube has been produced, for example also a It is possible to open it by shrinking it on, the plastic apron is then closed - or even better, remains closed during the opening - the inside of the tube is now protected from the ingress of any foreign objects until the filling process.
  • the methods and devices according to the invention make it possible to fill tubes from their tube ends for any type of tube, including tubes that do not have a latex ring or similar sealing aids. Since most of the tubes on the market have standardized diameters and the different sizes of tubes only have a few different diameters, only 3 or 4 sets of aids or plastic aprons of different sizes are necessary in order to be able to fill practically all tubes on the market.
  • the plastic apron 3, 103, 203 can also be provided with markings (eg rings), which then allows portioning to approximately 10% of the amount to be filled. Such portioning is permitted for defective filling.
  • the drawings are shown schematically for illustration. The distances between the plastic apron, tube, tube or other aids are shown larger than they really are to illustrate the course of the plastic apron. In order for the processes and devices to function properly, however, there should be a tight fit of the plastic apron, tube and tube.
  • a thin, inert plastic material that is flexible and preferred is suitable as a plastic apron should also be somewhat elastic. Such a material is, for example, polypropylene film, polyethylene film or preferably low-pressure polyethylene film, which is stable and yet elastic.
  • All the methods and devices according to the invention have in common that the still open bottom end of the tube inside is protected from contact with the pasty mass to be introduced by a thin plastic film.
  • the paste-like mass passes through this thin plastic film into an area of the interior of the tube that is spaced from the tube end to be closed, this plastic film being removed again to close the tube end.
  • This removal of the plastic film can e.g. by introducing the same with the pasty mass into the interior of the tube or by pulling out the thin plastic film from the end of the tube.
  • the thin plastic film or a part thereof can remain in the end of the tube during closing, but it must be ensured that no residue of the pasty introduced from this plastic film during the closing of the bottom end of the tube or later Mass can escape to the bottom end of the tube.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
  • Closing Of Containers (AREA)
EP90115951A 1989-08-24 1990-08-21 Verfahren und Vorrichtung zum Füllen von Quetschtuben Expired - Lifetime EP0414198B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3927996A DE3927996C1 (enrdf_load_stackoverflow) 1989-08-24 1989-08-24
DE3927996 1989-08-24

Publications (2)

Publication Number Publication Date
EP0414198A1 EP0414198A1 (de) 1991-02-27
EP0414198B1 true EP0414198B1 (de) 1993-10-27

Family

ID=6387797

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90115951A Expired - Lifetime EP0414198B1 (de) 1989-08-24 1990-08-21 Verfahren und Vorrichtung zum Füllen von Quetschtuben

Country Status (4)

Country Link
EP (1) EP0414198B1 (enrdf_load_stackoverflow)
AT (1) ATE96387T1 (enrdf_load_stackoverflow)
DE (2) DE3927996C1 (enrdf_load_stackoverflow)
DK (1) DK0414198T3 (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4426421A1 (de) * 1994-07-26 1996-02-01 Heinz Hartmann Verfahren und Vorrichtung zur Herstellung disperser Systeme, insbesondere Salben, Cremes, Suspensionen, Emulsionen, Gele oder Pasten

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE252905C (enrdf_load_stackoverflow) *
US1446047A (en) * 1921-03-29 1923-02-20 George J Keller Tube-filling apparatus
US4161970A (en) * 1977-06-27 1979-07-24 Lamb George D Method and apparatus for filling down garments
DE2908703A1 (de) * 1979-03-06 1980-09-11 Heinz Hartmann Vorrichtung zum abfuellen von pastoesen massen in eine quetschtube

Also Published As

Publication number Publication date
ATE96387T1 (de) 1993-11-15
DE59003219D1 (de) 1993-12-02
DE3927996C1 (enrdf_load_stackoverflow) 1991-01-24
DK0414198T3 (da) 1994-03-14
EP0414198A1 (de) 1991-02-27

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