EP0824484A1 - Cartouche et systeme de cartouche - Google Patents

Cartouche et systeme de cartouche

Info

Publication number
EP0824484A1
EP0824484A1 EP97907061A EP97907061A EP0824484A1 EP 0824484 A1 EP0824484 A1 EP 0824484A1 EP 97907061 A EP97907061 A EP 97907061A EP 97907061 A EP97907061 A EP 97907061A EP 0824484 A1 EP0824484 A1 EP 0824484A1
Authority
EP
European Patent Office
Prior art keywords
pressure
piston
cartridge according
cartridge
outlet
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.)
Granted
Application number
EP97907061A
Other languages
German (de)
English (en)
Other versions
EP0824484B1 (fr
Inventor
Frank Forstmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
FORSTMANN, FRANK
Original Assignee
Sipag Verpackung und Serv GmbH
Sipag Verpackung und Service GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DE19608128A external-priority patent/DE19608128A1/de
Priority claimed from DE29622174U external-priority patent/DE29622174U1/de
Priority claimed from DE29622175U external-priority patent/DE29622175U1/de
Application filed by Sipag Verpackung und Serv GmbH, Sipag Verpackung und Service GmbH filed Critical Sipag Verpackung und Serv GmbH
Publication of EP0824484A1 publication Critical patent/EP0824484A1/fr
Application granted granted Critical
Publication of EP0824484B1 publication Critical patent/EP0824484B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/00586—Means, generally located near the nozzle, for piercing or perforating the front part of a cartridge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/00569—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with a pump in the hand tool
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/00576—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes characterised by the construction of a piston as pressure exerting means, or of the co-operating container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/01—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with manually mechanically or electrically actuated piston or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/005—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes
    • B05C17/01—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with manually mechanically or electrically actuated piston or the like
    • B05C17/0103—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces for discharging material from a reservoir or container located in or on the hand tool through an outlet orifice by pressure without using surface contacting members like pads or brushes with manually mechanically or electrically actuated piston or the like with electrically actuated piston or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D47/00—Closures with filling and discharging, or with discharging, devices
    • B65D47/04—Closures with discharging devices other than pumps
    • B65D47/06—Closures with discharging devices other than pumps with pouring spouts or tubes; with discharge nozzles or passages
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D83/00—Containers or packages with special means for dispensing contents
    • B65D83/0055—Containers or packages provided with a flexible bag or a deformable membrane or diaphragm for expelling the contents
    • B65D83/0072—Containers or packages provided with a flexible bag or a deformable membrane or diaphragm for expelling the contents the contents of a flexible bag being expelled by a piston or a movable bottom or partition provided in the container or the package

Definitions

  • the invention relates to a cartridge for flowable media, with a volume-limiting sleeve made of flexible material, which can be provided at one end with a piston-like extrusion element and at the other end with an outlet element.
  • Cartridges for flowable media are known per se. These are containers for storage, transportation and dispensing of flowable media. It is primarily pasty media such as silicone rubber and the like, which are used, for example, in the construction industry. However, it is also known to fill adhesives, greases or other media into cartridges.
  • the volume-limiting envelope is an inherently rigid, housing-like element which generally has an extrusion area at one end and an opening for a piston-like extrusion element at the other end.
  • the dispensing area usually comprises a dispensing opening, it being known that this is closed in the case by an element provided with it in one piece. If necessary, this closure is opened, for example, by cutting open, so that there is a dispensing opening. In this area of the dispensing opening, a nozzle provided with an internal or external thread can be formed, onto which a dispensing nozzle can be placed.
  • Such cartridges are primarily made of plastic, so that a great deal of effort must be expended in terms of manufacture and disposal.
  • the containers are in
  • QUESTIONING QUALITY primarily disposable containers because they cannot be completely emptied and they are not universally applicable. Since you always choose the cheapest plastic for the production of the cartridges, they cannot be used universally for all substances, but different cartridges have to be produced for different media. Another problem is the lack of residual emptying of the cartridges, which is very unsatisfactory. It can also easily contaminate operators with the medium. After all, the cartridges manufactured as empty containers are already as large on the transport route for filling as after filling, so they require a large transport volume.
  • Self-rigid, tubular cartridges with a squeeze area formed at one end and a piston-type squeeze element formed at the other end are squeezed out using squeeze-out devices in which the tubular element is clamped and the squeeze-out element is advanced by means of a pressure piston.
  • tubular bags essentially consist of a tubular film which is closed at both ends. It is known to close the ends by means of so-called metal clips.
  • the use of such tubular bags is primarily intended to avoid the need to dispose of a large number of empty cylindrical containers. The production of tubular bags is easier and the disposal also.
  • the tubular bags are not dimensionally stable, they are used to process the media in them in a dimensionally stable cylindrical shell, at one end of which a closure with an outlet opening, for example for the arrangement of a nozzle tip, is arranged. Pressure can then be exerted on the tubular bag from the other end of the cylindrical outer shell.
  • tubular bags To dispense the mass in the tubular bag, the latter must be opened, which in practice occurs due to the destruction of the tubular bag cover by slitting, piercing or the like. After the tubular bags have been emptied, they are removed from the cylindrical envelopes, so that only a small, largely empty tubular bag has to be disposed of. Although this is against the cylindrical plastic cartridges has advantages, the tubular bags have the disadvantage that they can only be handled up to a certain filling volume and, in a particularly disadvantageous manner, contaminate the dispensing devices with the filled media. Most of the time, the operators will also come into contact with the medium. This often leads to a complete blockage of the dispensing means, so that in practice these too have to be disposed of at least partially.
  • Tubular bags are not dimensionally stable, so that they are used to process the media contained in them in a dimensionally stable cylindrical envelope, at one end of which a closure with an outlet opening, for example for arranging a nozzle tip, is arranged. Pressure can then be exerted on the tubular bag from the other end of the cylindrical outer shell.
  • a cylindrical receiving area depending on the type of cartridge, tubular or partially cylindrical, has an output area and a pressure generating device.
  • This can be, for example, a pressure piston, with which a negative pressure or an excess pressure is generated within the cylindrical receiving region by a lever movement.
  • a previously known device has such a pump piston, which has a negative pressure at the pressing end of a cartridge, ie at the dispensing area of the cylindrical recording area generated and the flowable medium after opening the cartridge sucks it out.
  • the present invention is based on the object of providing a cartridge which can be used in the
  • the invention provides a cartridge system which, in addition to a new type of cartridge, also comprises an output device and a pressure piston therefor. With this entire cartridge system, all the economic and technical advantages of the new cartridge according to the invention are optimally used and optimal economic use is ensured.
  • a cartridge for flowable media with a volume-limiting sleeve made of flexible material, which can be provided at one end with a piston-like extrusion element and at the other end with an outlet element, one in the region of the outlet Dispensing opening is provided, the diameter of which, taking into account the forces which can be applied by the extrusion element, the viscosity of the flowable medium and the flexibility of the casing, ensures the maintenance of an internal pressure in the volume delimited by the casing, which is suitable for counteracting folding of the casing material into the interior of the volume.
  • the invention provides a cartridge in which a number of elements are coordinated with one another in a defined manner in order to achieve a concrete, verifiable result.
  • the usual squeezing forces resulting from the piston geometry of the piston-shaped squeezing element and the diameter of the dispensing opening are coordinated with one another.
  • at least a minimum internal pressure in the volume limited by the jacket is set or maintained, so that the sleeve material cannot fold into the interior of the volume.
  • folding in should be understood to mean that the flexible material cannot tend to folds in the area in which it is still filled by the filled medium, in particular not folds that run transverse to the direction of extrusion.
  • the output opening fulfills the requirement of a material flow stipulated by processing boundary conditions, but in cooperation with the other parameters satisfies the requirement of maintaining a minimum pressure. It is also about defined and reproducible conditions, not about random results, for example as a result of a nozzle or the like being reached. Due to the configuration according to the invention, a casing can now be produced from a film which is not inherently rigid and can be used in a defined manner in the processing of the filled medium. The casing is stable during processing and during processing breaks due to the pressure prevailing on the inside and thus favors simple and proper handling.
  • the casing be formed from at least one film.
  • This is advantageously a plastic film.
  • You can also use inexpensive plastics such as polyethylene (PE) or high-pressure polyethylene (HDPE), which are very inexpensive materials.
  • the sheath advantageously comprises at least one diffusion-tight layer, aluminum preferably being proposed. Depending on the dimensions, the sheath can be stabilized by additional fabrics, for example nylon and the like.
  • the sleeve is advantageously formed in a tubular manner with an essentially round cross section.
  • the outlet element is a disk-shaped or cup-shaped element, which is connected in a particularly advantageous manner at one end of the casing to close it.
  • the sheath is thus advantageously produced as a film tube which is connected at one end to the pot-shaped outlet element over the entire circumference thereof.
  • the cup-shaped outlet element is advantageously made of plastic and, according to a further advantageous proposal, can be coated to prevent diffusion, for example with aluminum foil.
  • the outlet element can have grooves into which a clamping element is clipped, the film forming the envelope being clamped in between.
  • the clamping element is advantageously disc-shaped. It is proposed with particular advantage that the outlet element is pot-shaped and has the grooves on the cylindrical inner wall of the pot.
  • the outlet element is inserted with the bottom of the pot pointing into the inside of the casing.
  • the edge of the casing is then turned over the edge of the pot.
  • An annular or disc-shaped clamping element is then clipped into the pot and comes into contact with the grooves there.
  • the cover material in between is clamped in place. With this configuration, the tensile forces acting through the casing material are redirected and reduced several times.
  • the outlet element advantageously has an opening nozzle which forms an outlet opening.
  • the opening socket can be provided with a thread inside or outside, preferably a trapezoidal thread.
  • a filling device or a dispensing nozzle can be connected to the trapezoidal thread.
  • the trapezoidal thread has the particular advantage that it absorbs the pressure forces well.
  • the opening socket can be closed by a screw cap that can be screwed into the thread.
  • the closure lid can advantageously have a handle for handling and, moreover, advantageously a bore, for example in order to be able to hang up the cartridge.
  • the closure lid can be inserted with the interposition of a film element, preferably a diffusion-stable film element.
  • the inventive configuration described provides a cartridge which is completely new compared to the prior art and which, despite economical manufacture, can be resealed.
  • a piece of film for example an aluminum cap, which can also be plastic-coated
  • the volume can be closed in a diffusion-resistant manner.
  • the volume can be closed again for later use of the filled medium.
  • the piston-shaped extrusion element is a cup-shaped piston.
  • this element which is preferably made of plastic, can be connected to the sheath by closing it at one of its ends. The cup-shaped element is then inserted with the pot bottom pointing into the inside of the casing and connected to the casing material at the circumferential area to close the casing.
  • the contour of the bottom of the pot corresponds to the negative shape of the bottom of an outlet element, which considerably increases the degree of residual emptying.
  • the piston has a wiping edge on the circumference in order to scrape out the interior of the sleeve when the piston is being pressed through the sleeve
  • the piston can be provided with reinforcing plugs.
  • a cartridge can be produced in a simple form by using a film tube which is closed at one end by a clip connection with an outlet element and at the other end by clip connection with a piston element.
  • This configuration according to the invention also ensures simple use and economical disposal using simple and economically producible elements, since the materials can be used from the point of view of disposal.
  • a particular advantage results from the fact that the piston can be guided through the interior of the volume to the outlet element, the flexible sleeve material turning inside out in the region of the rear edge of the piston. So if the piston has reached the bottom of the outlet element with its piston surface, the envelope is once over Your half-length shortened retracted into itself.
  • the pistons can be sucked through the volume interior to the outlet element by simple vacuum generation or pushed in by pushing in.
  • the sleeve to be transported when empty is only half as long as a plastic cartridge of the same filling volume.
  • the transport costs can be reduced considerably, namely by at least 50%. Due to the flexibility of the casing, a further reduction can be achieved through appropriate packing processes.
  • the piston When filling, the piston can be pushed back into its original position by generating little pressure and the casing can be filled completely. Another advantage is that there is practically no air inside the casing at the beginning of the filling process.
  • the piston When used as intended, the piston is then moved in the direction of the outlet element by means of a suitable squeezing device, wherein due to the selected dimensions of the piston surface, taking into account the media viscosity and the sleeve flexibility and the dimensioning of the outlet opening formed in the area of the outlet element, there is always sufficient internal pressure inside the sleeve, which presses the cover outwards to stabilize it and prevents folding.
  • the envelope can be almost completely scraped out by the piston that passes by, and, which is of particular importance, the envelope is not compressed between the piston and the outlet element, but is turned inside out and moved cleanly behind the piston, since the end of the envelope is attached to the piston.
  • the emptying is complete, the piston has reached the outlet element.
  • the residual emptying is correspondingly good and exceeds the legal requirements in every respect.
  • the completely emptied cartridge can no longer contaminate the operator and can be easily disposed of with a considerable reduction in disposal costs.
  • the plastic content is considerably reduced compared to conventional cartridges, e.g. 70%.
  • the cartridge can be closed again by the closure cover. It is possible to use a cover plate or a cover cap in accordance with the invention to use. The reservoir remaining in the cartridge can thus be stored again.
  • the cap is also inserted at the end of the filling process with the interposition of a cap.
  • This closure cap in the form of a preferably deep-drawn foal hut also represents an original closure and must first be destroyed before the medium is dispensed.
  • the contour of the lid base is designed in such a way that, together with the filled internal volume, on the one hand it can ensure a defined filling quantity and on the other hand also a defined internal pressure.
  • the closure cover can, for example, be provided with a defined bore into which a medium mountain remaining during the filling is received in a defined manner.
  • connection element has an opening connection piece, in the interior of which an outlet opening is formed.
  • An opening of a defined diameter can be formed in the area of this nozzle, which represents the pressure-effective dispensing opening according to the invention.
  • the pressure-effective discharge opening is formed in the threaded area of the nozzle element.
  • Nozzle elements are formed in a manner known per se over a predetermined length with a tapering cross section. The user can then cut the nozzle at will in the area of a technically required nozzle diameter. In contrast, this area is not pressure-effective in the sense of the present invention, but the pressure-effective dispensing opening is formed in the lower and non-cut area of the nozzle element, preferably in the threaded area
  • the outlet opening on the outlet element side is tapered in a ring shape at the end pointing towards the volume.
  • This annular tapering of the outlet opening forms a sealing lip or sealing surface, onto which, for example, a nozzle element can be screwed as well as a closure cover.
  • a film can be inserted in a simple manner, which is effective in the manner described as securing the proximity and diffusion-tight closure.
  • the invention proposes that the part of the casing which has already been emptied and is located behind the piston element can continue to be pressed in the axial direction.
  • this measure which can be implemented, for example, by a corresponding configuration of a pressing device, the final volume of the emptied casing is reduced to a fraction of its original length, which further promotes disposal.
  • the present invention provides a completely new type of cartridge, which is characterized by being economical to produce, economical to transport empty and easy to fill. Since essentially sheet-like materials are used, the cartridge according to the invention can be designed for almost universal use, for example by using polyethylene-coated aluminum foils. The total weight can be reduced to a good third compared to conventional plastic cartridges when empty. The transport cost savings of the empty cartridges are therefore immense. After filling, the cartridges are easy to handle even in large filling volumes, since pressure filling is easy.
  • the defined, cooperative design taking into account various parameters, primarily ensures that the cartridge can always be reproduced when it is emptied, so that degrees of emptying and final, defined and reproducible disposal quantities result in a defined manner.
  • the type of cartridge according to the invention can, if necessary, also be provided with a diffusion-tight security seal and advantageously resealable after filling.
  • the invention proposes a pressure piston with a pressure surface area at one end of an essentially cylindrical piston wall area, which is surrounded at the end opposite the pressure surface area by an annular flange which has an annular groove open towards the pressure surface area.
  • the pressure piston according to the invention ensures that the pressure surface area immigrating into the cartridge effects a desired pressing out of the cartridge, while the cartridge wall runs into the ring throat with sufficient advance of the pressure piston and is moved by the latter in the transverse direction from the longitudinal direction. Since the sheath is cylindrical, internal transverse forces cause considerable stresses in the area that strikes the throat, so that the cartridge is folded in here.
  • the pressure piston has a mounting hole for the stamp of a pressure device.
  • the pressure piston can of course also be an element of a pneumatic or hydraulic pressure device.
  • the mounting hole for the pressure stamp is a central threaded hole according to an advantageous proposal.
  • the piston wall area be tapered, preferably from the pressure surface area to the ring groove with an increasing diameter.
  • the pressure piston is a plastic element.
  • Such elements can be economically manufactured, for example, as an injection molded part.
  • the invention provides an easy to manufacture and very effective pressure piston for pressing cartridges, in particular with a flexible sleeve material.
  • Such a pressure piston can also be easily retrofitted into existing dispensing devices.
  • the one dispensing device is further developed in such a way that extensive residual emptying of an inserted cartridge on the one hand and a predetermined compression of the cartridge on the other hand are ensured.
  • the invention proposes an output device for flowable media provided in cartridges, with at least one essentially cylindrical receiving area for a cartridge, at least one output area for the flowable medium at an end area of the receiving area and a device for generating a pressure deviating from normal pressure an end region of the receiving region, a second device for generating a pressure deviating from normal pressure being provided, with which a pressure deviating in the opposite direction from normal pressure can be generated at the other end region.
  • the invention thus boils down to the fact that when a negative pressure is generated at the output area of the receiving area, an excess pressure is additionally generated at the opposite end.
  • the adjustability or controllability of the pressure conditions automatically means that, on the one hand, the residual quantity emptying can be controlled and, on the other hand, the material behavior of the inserted cartridge.
  • the invention advantageously proposes that the second device is a piston element. This preferably generates an air pressure that deviates from normal pressure.
  • the pressure generating device be a
  • Double piston element is. Such a double piston element can generate a negative pressure when moving in one direction at one cylinder end, and an excess pressure when moving in the other direction at the other cylinder end, for which purpose only a corresponding line routing is required.
  • the double piston can preferably be actuated by levers, whereby a single or two movable levers can be used.
  • the pressure deviating from normal pressure is advantageously an air vacuum or an air pressure
  • Figure 1 is a schematic partially sectioned representation of one half of an embodiment of a cartridge
  • FIG. 2 shows an illustration according to FIG. 1 in another operating state
  • FIG. 3 shows a representation according to FIG. 1 in a different operating state
  • Figure 4 is a plan view of a cover element
  • FIG. 5 shows a sectional view of the cover element according to FIG. 4;
  • FIG. 6 shows a view of the cover element according to FIG. 4 from below
  • FIG. 7 shows a detailed view of detail VII according to FIG. 5;
  • Figure 8 is a plan view of a clamping washer
  • FIG. 9 shows a sectional illustration of the clamping disk according to FIG. 8.
  • Figure 1 0 is a plan view of a piston element
  • Figure 1 1 is a sectional view of the piston element according to Figure 1 0;
  • Figure 1 2 is a view of the piston element according to Figure 1 0 from below;
  • Figure 1 3 is a plan view of a clamping ring
  • FIG. 14 shows a sectional view of the clamping ring according to FIG. 1 3;
  • Figure 1 5 is a view of a nozzle tip;
  • Figure 1 6 is a sectional view of the nozzle tip according to Figure 1 5;
  • Figure 1 7 is a side view of a closure element
  • Figure 1 8 is a plan view of the closure element according to Figure 1 7;
  • Figure 1 9 is a sectional view of the closure element according to Figure 1 7;
  • FIG. 20 shows a schematic view of an exemplary embodiment for a pressure piston
  • FIG. 21 shows a partially sectioned view of a further exemplary embodiment for a pressure piston
  • Figure 22 is a plan view of the embodiment of FIGS. 21 and
  • Figure 23 is a schematic representation of an embodiment of an output device.
  • the cartridge 1 shown in Figures 1 to 3 comprises a volume-limiting shell 2, which is shown in the embodiment shown as a cylindrical shell.
  • the sheath is, for example, a composite film made of PE, AL as a barrier layer in the sense of a diffusion-tight layer which is resistant to steam, gas, UV radiation and the like, and a composite stabilization by BO-NY (biaxially oriented nylon).
  • the film forms a cylindrical tube which is closed at one end by a cover 3 and at the other end by a piston 4. Both the cover 3 and the piston 4 are firmly connected to the film 2.
  • the cover 3 has an opening neck 5.
  • FIG. 1 In the exemplary embodiment according to FIG.
  • a nozzle tip 6 is screwed into the opening nozzle, which has an internal thread.
  • the cartridge 1 is in a state in which the piston 4 is pushed inside through the shell 2 to the cover 3. This is either the transport position in which the cartridge is only half the normal length, or it is the position after it has been squeezed out completely.
  • FIG. 3 also shows that the contour of the piston surface is essentially congruent with the contour of the lid base, which enables almost complete emptying of the residue.
  • the sleeve 2 is turned inside behind the piston 4. In this position there is a light and small transport unit for filling. After emptying, there is a small unit which is easy to dispose of, the upturned casing 2 according to FIG. 3 being compressible even further by appropriate devices.
  • FIG. 4 shows a top view of a cover element 8 which comprises the centrally arranged opening connector 5.
  • the sectional view according to FIG. 5 shows that the cover element is essentially pot-shaped or pan-shaped and has an edge 9.
  • the bottom 1 0 has a contour that favors a residual emptying and an air-free filling.
  • a trapezoidal thread 11 is formed in the interior of the opening stub 5.
  • the trapezoidal thread is used to attach a nozzle or a cap.
  • the formation of the thread 1 1 as a trapezoidal thread favors the absorption of tensile and compressive forces during filling and during pressing.
  • An annular groove 1 2 is formed in the interior of the edge 9.
  • the opening is tapered in a ring in the region of the transition from the floor 10 into the opening nozzle 5.
  • This taper ring 41 performs a number of functions.
  • its thread-side configuration is designed in such a way that a sealing surface is obtained which favors the sealing against a nozzle or a closure cap.
  • the described annular groove 1 2 serves to insert a gill disk 1 3, which, as shown in FIG. 9, has an annular web 14 with an outwardly facing cam ring.
  • the cover element 8 is in this way in a hose sleeve used that the bottom 10 points to the volume surrounded by the envelope.
  • the edges of the film tube protrude beyond the edge 9 of the cover element 8 and are turned over in the direction of the opening connector 5.
  • the clamping disc 1 3 is pushed over the opening nozzle 5 until the cam ring 1 5 is locked in the annular groove 1 2 and the tubular material is clamped over the entire circumference of the ring. This creates a diffusion and pressure-tight connection between the film tube and the cover.
  • FIGS. 1 3 and 14 an embodiment for a piston is shown.
  • the piston consists of a piston head 16, which has a piston surface 17 with a curved contour 18, which merges into a piston rim 19.
  • the transition is exceptionally angular and the piston rim 19 can even be conically tapered starting from the piston surface. The result is a sharp-edged corner that encourages scraping out the inside of the film.
  • An annular groove 20 is formed in the interior of the pot formed by the piston rim 19 and the rear of the piston surface 17.
  • a clamping ring 22 can be inserted into this, which is shown in FIGS. 1 3 and 14 and has an annular bead 24 in the region of an annular web 23, which can be locked in the annular groove 20.
  • the end of the film tube can be slipped in, so that the piston surface 17 points into the interior of the volume and the piston edges overlap the piston rim 19.
  • the clamping ring 1 3 is inserted, the foil edge material is clamped in the annular groove 20 when the annular bead 24 is locked, and this results in a tight and firm connection.
  • the piston pot 16 is stiffened by reinforcing ribs, which in the exemplary embodiment shown are arranged at an angle of 45 ° relative to one another.
  • FIGS. 1 to 3 show that a cartridge as shown in FIGS. 1 to 3 can be produced with simple means by simply chopping or latching without additional elements. All the elements described can be coated or designed to be diffusion-tight.
  • the cover and piston elements described are usually made of HDPE. This is physiologically harmless and very inexpensive. Of course, these elements can be used to prevent diffusion, for example protect with aluminum coating or lamination.
  • the sleeve material can also be folded over and fastened accordingly.
  • FIGS. 1 5 and 1 6 show an exemplary embodiment for a nozzle 6 which has a threaded region 25 and a nozzle region 26.
  • the nozzle region 26 has a nozzle tip 27 and, moreover, a series of marked passages 28, in which the nozzle can be cut off with a predetermined diameter in order to achieve a defined passage opening.
  • the outlet opening 30 is formed in a ring.
  • FIG. 1 shows the mounting position of the nozzle 6 on the cartridge 1, it being shown that the nozzle tip with its lowermost edge of the threaded area, which is chamfered, seals on the tapering ring 41 in the opening nozzle 5 rests. In addition, it tapers inwards an outlet opening with a defined diameter.
  • This contour in the threaded area in the transition to the nozzle defines the outlet opening which, in cooperation with the piston surface, the material viscosity and the sleeve flexibility, ensures the maintenance of a minimum internal pressure in the cartridge, regardless of the other diameters obtained by cutting the nozzles to length
  • a closure cap 7 which also has a threaded region 31 which is closed in a pot shape.
  • a handle 32 which permits the closure cap to be actuated.
  • a bore 33 is formed in this grip web 32, which is a The closed cartridge allows hanging. Reinforcing ribs 34 on both sides of the handle 32 serve for stabilization.
  • a bore 35 is made in a defined manner in the interior of the pot-like closure cap 7. This bore 35 is designed such that after the finished filling in the position shown in FIG. 2, a defined medium distribution and a defined internal pressure are ensured.
  • a foil cap (not shown) can be inserted or placed on the cap and jammed in the thread. This cap serves as tamper-evident device, must be destroyed before use and can be designed to be diffusion-tight in order to make the inside of the cartridge completely diffusion-tight.
  • FIG. 20 shows an exemplary embodiment of a pressure piston element, as can be used on the side of an extrusion tool, in order to enable further advantageous uses of the invention.
  • This pressure piston 36 has a cylindrical piston region 37, with which pressure is exerted on the bottom of the press-out piston 4 of a cartridge 1.
  • the cartridge 1, as shown, for example, in FIG. 1, is advantageously inserted into a tubular extrusion element which has a passage opening for the nozzle 6 at one end and which provides the cover 3 with a stop. From the other end, pressure is exerted on the bottom of the piston 4, for example by means of a pressure piston 36.
  • the pressure piston is guided in a tubular element, the guide edge 38 being guided essentially on the inner wall of the tube.
  • the inverted film area will also remain in inverted form along the inner tube wall and slowly penetrate through the ring groove Move in the direction of the cylindrical wall area of the piston area 37, where further inverting, carding and the like take place.
  • Such an emptied and compressed cartridge can be disposed of easily and in a space-saving manner.
  • Cartridges of the exemplary embodiments shown can advantageously be produced in a wide variety of dimensions. Filling volumes of around 600 ml are very suitable, whereby the transport unit can be shortened to 300 ml, which corresponds to a length of approximately 70 mm. A transport volume reduction of 60% compared to conventional cartridges, which have a total cartridge length of about 230 mm, is therefore easy to achieve.
  • the transported cartridge according to FIG. 3 is largely empty of air and can therefore be filled with pressure immediately. The piston is displaced axially until the film is tightened and the respective filling volume is reached. Then a cap is screwed in, a film cap being screwed in as an originality seal. This can also be a deep-drawn aluminum part, for example.
  • All solid plastic elements are advantageously made of HDPE, possibly aluminum-coated.
  • the end point on the nozzle creates an overpressure in the sleeve during the pressing process, which means that the film does not collapse inwards and is thereby stabilized. This effect allows the piston to glide past the inside of the film and scrape it out while simultaneously pulling the scraped-out film behind it, so that residual empties of less than 1% can be achieved.
  • a pressure piston of an extrusion tool according to FIG. 20 compression to approximately 15% of the original size can be achieved.
  • annular flange 44 is arranged, which has a fastening device for fastening to an extrusion unit.
  • this is a thread or a clip insert, in the case of FIGS. 21 and 22, a threaded bore 45.
  • the ring flange has on its surface facing the respective pressure surface area 43 an annular groove 47 which is suitable for radially leaving and tensioning the casing material running along the piston wall area in order to bring about an orderly folding.
  • the device shown in FIG. 23 is a dispensing device 48 with a receiving tube 49, into which a cartridge of a type known per se (not shown) can be inserted.
  • a discharge opening 50 is formed at one end, and a cover can be placed at the other end.
  • a piston (not shown) 52 is inserted, by means of which lifting movements can be carried out via the gear 54 and the lever.
  • a cartridge inserted into the receiving tube 49 is either opened, connected to the dispensing area or, as in the exemplary embodiment shown, opened by the opening device 53.
  • the lever 55 By moving the lever 55, the piston is then raised and lowered via the transmission. In one case, it creates a negative pressure on the side of the discharge opening 50, in the other case on the side of the cover 51, an excess pressure.
  • the lever 56 is designed to be stationary in the exemplary embodiment shown and is provided with a line 57 for pressure control.
  • the pressure control can also be done differently, so that both levers can also be moved.
  • the gear design has no influence on the spectrum of the present invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Coating Apparatus (AREA)

Abstract

L'objet de l'invention est l'obtention d'une cartouche (1) qui soit économique à produire et également à remplir, qui ne comporte qu'une petite quantité de matière plastique et qui, lorsqu'elle est jetée, est très peu polluante. En outre, ladite cartouche devrait se prêter au plus grand nombre d'utilisations possibles, être vidée au maximum de sa substance résiduelle et garantir un grand volume de transport. A cet effet, on obtient, selon l'invention, une cartouche (1) pour substance coulante pourvue d'une enveloppe (2) en matière souple délimitant un volume. Ladite cartouche comporte, à une extrémité, un élément d'expression en forme de piston (4) et, à une autre extrémité, un élément de sortie (3). Dans la région de la sortie, se trouve une ouverture de distribution dont le diamètre, compte tenu des forces qui peuvent être appliquées sur l'élément d'expression, de la viscosité de la substance coulante et de la souplesse de l'enveloppe, garantit, dans le volume délimité par l'enveloppe, une pression interne qui peut agir à l'encontre d'un pliage du matériau de l'enveloppe à l'intérieur du volume.
EP97907061A 1996-03-02 1997-02-28 Cartouche pour produits fluides Expired - Lifetime EP0824484B1 (fr)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
DE19608128 1996-03-02
DE19608128A DE19608128A1 (de) 1996-03-02 1996-03-02 Kartusche
DE29622175U 1996-12-20
DE29622174U DE29622174U1 (de) 1996-12-20 1996-12-20 Druckkolben für Ausgabevorrichtung
DE29622175U DE29622175U1 (de) 1996-12-20 1996-12-20 Ausgabevorrichtung für in Kartuschen bereitgestellte fließfähige Medien
DE29622174U 1996-12-20
PCT/EP1997/001022 WO1997031840A2 (fr) 1996-03-02 1997-02-28 Cartouche et systeme de cartouche

Publications (2)

Publication Number Publication Date
EP0824484A1 true EP0824484A1 (fr) 1998-02-25
EP0824484B1 EP0824484B1 (fr) 2002-09-04

Family

ID=27215974

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97907061A Expired - Lifetime EP0824484B1 (fr) 1996-03-02 1997-02-28 Cartouche pour produits fluides

Country Status (9)

Country Link
US (1) US6000582A (fr)
EP (1) EP0824484B1 (fr)
JP (1) JPH11504600A (fr)
KR (1) KR19990008176A (fr)
CN (1) CN1099361C (fr)
CA (1) CA2220030A1 (fr)
DE (1) DE59708110D1 (fr)
ES (1) ES2180944T3 (fr)
WO (1) WO1997031840A2 (fr)

Families Citing this family (6)

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JP3575306B2 (ja) * 1998-08-11 2004-10-13 サンスター技研株式会社 軟質容器に対する高粘調液の充填方法及び高粘調液の充填装置並びに高粘調液充填容器
DE19940614C2 (de) * 1999-08-27 2003-06-18 Frank Forstmann Verfahren und Vorrichtung zum Füllen von Behältnissen für fließfähige Medien
US6460736B1 (en) 2000-11-28 2002-10-08 D'agostino Monica Anne Heated confectionary dispenser
US20040084482A1 (en) * 2002-11-04 2004-05-06 Sumner William P. Fluid dispensing apparatus
GB0321332D0 (en) * 2003-09-11 2003-10-15 Glaxosmithkline Consumer Healt Novel device
KR101116317B1 (ko) * 2009-12-30 2012-03-09 에이피시스템 주식회사 시린지 고정장치

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Also Published As

Publication number Publication date
KR19990008176A (ko) 1999-01-25
EP0824484B1 (fr) 2002-09-04
ES2180944T3 (es) 2003-02-16
DE59708110D1 (de) 2002-10-10
WO1997031840A2 (fr) 1997-09-04
CN1099361C (zh) 2003-01-22
WO1997031840A3 (fr) 1997-11-27
CA2220030A1 (fr) 1997-09-04
CN1188458A (zh) 1998-07-22
JPH11504600A (ja) 1999-04-27
US6000582A (en) 1999-12-14

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