WO2006039828A1 - Verfahren und dosiereinrichtung zum dosieren eines additivs - Google Patents
Verfahren und dosiereinrichtung zum dosieren eines additivs Download PDFInfo
- Publication number
- WO2006039828A1 WO2006039828A1 PCT/CH2005/000594 CH2005000594W WO2006039828A1 WO 2006039828 A1 WO2006039828 A1 WO 2006039828A1 CH 2005000594 W CH2005000594 W CH 2005000594W WO 2006039828 A1 WO2006039828 A1 WO 2006039828A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- inert gas
- additive
- plastic granules
- pressure
- passage
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/32—Mixing; Kneading continuous, with mechanical mixing or kneading devices with non-movable mixing or kneading devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/70—Spray-mixers, e.g. for mixing intersecting sheets of material
- B01F25/72—Spray-mixers, e.g. for mixing intersecting sheets of material with nozzles
- B01F25/721—Spray-mixers, e.g. for mixing intersecting sheets of material with nozzles for spraying a fluid on falling particles or on a liquid curtain
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/30—Mixing; Kneading continuous, with mechanical mixing or kneading devices
- B29B7/58—Component parts, details or accessories; Auxiliary operations
- B29B7/60—Component parts, details or accessories; Auxiliary operations for feeding, e.g. end guides for the incoming material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B7/00—Mixing; Kneading
- B29B7/80—Component parts, details or accessories; Auxiliary operations
- B29B7/88—Adding charges, i.e. additives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/04—Particle-shaped
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/285—Feeding the extrusion material to the extruder
- B29C48/29—Feeding the extrusion material to the extruder in liquid form
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/0005—Condition, form or state of moulded material or of the material to be shaped containing compounding ingredients
Definitions
- the invention relates to a method according to the preamble of claim 1 and a device according to the preamble of claim 7.
- EP-A-620 778 discloses an apparatus for producing a crosslinked extruded
- the mixing device has a transmission rod driven by a gear which is formed essentially of a vertical rod.
- the gearbox has a vertically arranged hollow shaft for the agitator linkage with a central vertical bore for the inlet of the plastic granules.
- the mixing device is connected via a feed line to a metering pump unit, via which an additive (silane solution) can be metered.
- a nozzle disposed on the mixer allows the liquid additive transported by the supply line to be injected into the mixer.
- the metering pump unit has a pump, which ensures a continuous supply of the additive.
- This known device has the advantage that the metering device provides a continuous metering of an additive to a plastic granules.
- a disadvantage of the metering device described, however, is that it is relatively complicated and therefore expensive to manufacture. There is also the risk in the case of metering devices with pumps that slight pressure fluctuations occur and thus the injected additive quantity fluctuates periodically.
- US-A-4,252,844 discloses an apparatus and method for uniformly and continuously mixing a relatively small amount of a liquid or liquefied additive into a relatively large amount of a granular material.
- the method comprises the steps of forming a stream of the granular material, generating an inert gas stream at sonic velocity, supplying the additive to that inert gas stream, and supplying the additive / inert gas stream to the stream of the granular material.
- a gas-tight reservoir is provided, in which the additive is present, and the reservoir set under the pressure of the inert gas.
- a disadvantage of this device and this method is that relatively large amounts of inert gas are required to supply relatively small amounts of additive to the granular material.
- the object of the present invention is to provide a method and a metering device which allow a precise metering of a liquid additive. Another object is to propose a metering device, which is robust and inexpensive to produce.
- the object is achieved in a method in which, according to the preamble of claim 1, the liquid is injected by means of pressurization with an inert gas by the inert gas in turn is acted upon by compressed air.
- the method has the advantage that can be dispensed with metering pumps, and thus a precise metering without pressure fluctuations is possible.
- the inert gas in turn is pressurized with compressed air, the inert gas atmosphere being separated from the compressed air atmosphere by an interface, preferably a cylinder / piston unit. As a result, the consumption of expensive inert gas can be kept low.
- the additive is injected in the flow direction of a flowing plastic granulate between the plastic granules.
- an injection device is advantageously arranged in a preferably tubular passage and the outlet opening of the injection device in the direction of flow, i. towards the continuous casting device, oriented.
- This method has the advantage that a good and uniform wetting of the granules is achieved.
- it can also be retrofitted at existing facilities at any time.
- the additive is injected axially into the flow of plastic granules.
- the injector is placed approximately in the middle of the passageway. This is a particularly favorable arrangement. If the injector arranged such that between the injector and the passage an annular gap for the passage of the granules is present, this causes a good Distribution and large, the sprayed exposed surface of the granules, so that a particularly uniform wetting is achievable.
- the additive is filled in a first step from a reservoir into a metering, and promoted in a second step, the additive present in the metering container by the pressurization of the metering and between the plastic granules.
- a predetermined amount of the additive is introduced into the dosing tank and a predetermined amount of the plastic granulate is introduced, and the amount of the additive is added to the amount of the plastic granulate, and only then the plastic granules so wetted an extrusion Vorrichrung fed.
- the present invention also provides a metering device according to claim 7.
- the inert gas line is additionally provided by means of a pressure-transmitting interface, e.g. a cylinder / piston unit, with an additional pressure source in combination.
- the overpressure source is preferably a compressed air source.
- a vent valve is connected to the inert gas line.
- This has the advantage that the line can be purged with inert gas.
- a feed line can be connected, which is in communication with a reservoir for the liquid to be dosed. This makes it possible to maintain a closed circuit, which is under a protective gas atmosphere and is sealed off from the environment.
- a metering line may be connected, which is in communication with an injection device and can be shut off by means of a valve.
- the injection device is arranged in the passage of a mixing device and the outlet opening of the injection device in the flow direction of the granules, ie in the direction of the continuous casting, oriented.
- the passage is a pipe section, and between the injector and the jacket of the pipe section, an annular gap is present.
- the annular gap has the advantage that a particularly good distribution and thus an extremely uniform wetting of the granules is possible.
- a shut-off device with one of an open position provided in a closed position sliding closing organ. This has the advantage that the mixing device can be separated from the environment. Thus, in a business interruption no toxic fumes can escape into the environment.
- the shut-off device is formed from a funnel-shaped guide piece and the injection device, and the funnel and the injection device are displaceable relative to one another.
- An expedient embodiment provides that the funnel-shaped guide piece serves as a closing member and is arranged displaceably in the passage. This has the advantage that the width of the annular gap is changeable.
- the subject of the present invention is also a device for producing extruded products from polymer granules, comprising a device described above for metering and admixing an additive to the polymer granules; a feed device for at least one polymer, which is connected to a first connection side of this device; and a continuous casting apparatus connected to a second terminal side of the device.
- FIG. 1 shows a metering device for a liquid additive.
- Fig. 2 shows schematically an extruding device with a feeding device and a
- FIG. 3 shows a first embodiment of a mixing device in longitudinal section
- Fig. 4 shows a second embodiment of a mixing device also in the
- FIG. 1 shows the basic structure of a metering device, which is the discontinuous or batchwise metered addition of a liquid to another medium or substance.
- a metering pump is completely dispensed with in the device according to the invention.
- the metering takes place with the aid of two (line) systems, which are separated by a cylinder / piston unit 111 or, for example, 2 bellows cylinders.
- the cylinder / piston unit 111 used in the embodiment of FIG. 1 separates a pressure side, which can be operated with ordinary compressed air, from an inert gas side, which is preferably filled with an inert gas atmosphere.
- a pressure source 120 e.g. a compressed air tank, connected to the cylinder 115 of the cylinder / piston unit 111.
- the line 113 can be closed off and vented via a valve 119.
- a piston 117 is arranged axially movable.
- the piston 117 in the cylinder 115 of the unit 111 serves as a release agent between the pressure and inert gas.
- two bellows cylinders arranged one behind the other can also be used to separate the inert gas side from the pressure side.
- an inert gas line 121 connects the cylinder / piston unit 111 with a metering or weighing tank 123.
- a bleed valve 125 which is in communication with the inert gas line 121, allows its venting.
- the gas exiting bleed valve 125 is preferably used as a shield gas for sequential equipment (e.g., mixers, screw extruders) and returned to the apparatus.
- An inert gas can be fed into the inert gas line 121 via a feed line 129 which can be shut off with a valve 127.
- a first inert gas source 122 is connected to the supply line 129.
- a second inert gas source 124 may be connected to the inert gas line 121.
- the second inert gas source 124 generates a higher pressure compared to the first inert gas source.
- the pressure of the first inert gas source 122 is set in the range of the pressure of the compressed air source 120.
- the second source of inert gas 124 may be used, if necessary, e.g. a failure to empty the weighing container 123 within a short time.
- a reservoir 135 serves to receive a liquid, such as an additive, which must be metered in a reactive continuous casting a plastic granules in a very specific ratio.
- the reservoir 135 is connected via a feed line 137 to the outlet opening 138 of the weighing container 123 in connection.
- the weighing container is connected to an injection device 39 via a further line 139, which may be connected to the feed line 137.
- Both the feed line 137 and the line 139 may be shut off by means of suitable valves.
- the line 139 can be shut off by a valve 141.
- a check valve 143 may be used instead of a shut-off valve. The check valve 143 prevents liquid from the weighing container 123 can get back into the reservoir 135.
- a liquid such as an additive
- Liquid filter 145 may be installed in the feed line.
- a throttle valve 153 may be incorporated into the conduit 139. With this throttle valve fine adjustment of the additive flow is possible.
- a pump 147 serves to convey liquid from the reservoir 135 into the weighing container 123.
- a connecting line 149 connects the inert gas line 121 under an inert gas atmosphere to the reservoir 135.
- a valve 150 makes it possible to shut off the connecting line 149.
- the valve 149 is opened, and the volume of liquid withdrawn from the reservoir is refilled by inert gas.
- the first inert gas pressure source 122 connected to line 129 is set to a slight overpressure of approximately 0.5 atm.
- the second, connected to line 131 and also in communication with the line 121 in connection inert gas pressure source 124 is set to an overpressure of about 1.5 atü.
- the piston 117 is pressed down against the pressure generated by the air pressure source by means of the first inert gas pressure source (when the valve 127 is open). Thereafter, the lines are purged on the inert gas side of the piping system with inert gas. This happens at open valves 127 and 125, wherein the gas for flushing the
- valves are closed again and the valve 150 of the connecting line 149 is opened.
- liquid is then pumped into the weighing container 123.
- the liquid delivery is stopped again as soon as the desired amount of liquid is loaded.
- the valve 150 is closed again.
- the valve 141 is opened and pressed with the valve 119 open the piston 117 with air pressure upwards.
- the liquid dispensed per unit time can be precisely metered. Also, a fine adjustment can be achieved via the optional throttle valve.
- FIG. 2 shows the basic structure of an extruding device 11 with a screw extruder 13, a mixing device 15 arranged on the screw extruder 13.
- a feeding device 17 is provided, which serves to receive a plastic granulate.
- a supply line 21 coming from a metering device 19 for a liquid additive opens into the mixing device 15.
- the mixing device 15 has a pipe section 23 with a first connection side 25 for the task device 17 and a second connection side 27 for the screw extruder 13.
- the first connection side 25 consists of a flange 29 with round holes 31 for releasable attachment at the
- the second connecting side consists of a connecting piece 33, which can engage in a corresponding receptacle of the screw extruder 13 (not shown in the figures). It is conceivable that a (mechanical) mixer (agitator) is provided between the mixing device and the screw extruder.
- a (mechanical) mixer agitator
- the mixing device 15 shown with the pipe section 23 defines a passage 37 defined for a plastic granules.
- an injection device 39 is arranged in the passage 37.
- the injection device 39 has a core 41 in which an injection nozzle 43 is arranged.
- the core 41 has an outer cone-shaped portion 43 and a convex end face 45.
- a round hole 47 is provided, in which the plunger 49 of the valve formed as an injection nozzle 43 is guided axially movable.
- the plunger 49 has a plate-shaped head 51 which is positively received in a correspondingly formed valve seat 53 of the core 41 in the closed state of the injection nozzle.
- the plunger 49 is biased by a spring 55 in the closed position.
- a ring 57 is placed at the rear end of the plunger 49, which bears against a clamping disk 59 when the spring 55 is placed on the plunger.
- the back of the core 41 has a round central threaded hole 61, in which a valve housing 63 is screwed.
- the valve housing 63 has a pyramidal head 65 and an adjoining shaft 67.
- the shaft 67 has an external thread 69, which can interact with the internal thread 71 of the threaded bore 61.
- the valve housing 63 has a bore 73 which defines an interior 75. In the interior 75 of the rear part of the valve stem 49 is received with the spring 55.
- the connecting flange 81 has a round hole 85, in which the upper part of the shaft 67 is received. In the round hole 85, an annular groove 87 is provided, into which a feed channel 89 of the connecting piece 83 opens.
- the connecting piece 83 has a connecting piece 91, which is inserted into a ' hole 93 in the wall of the pipe section 23. At the connection piece 91, an external thread 95 is provided, onto which a nut 97 for fastening the connection piece 83 on the pipe section 23 can be screwed.
- the core 41 of the injection device 39 has a diameter such that an annular gap 99 for the passage of the plastic granulate remains between its widest diameter and the tube section 23.
- a funnel-shaped guide piece 101 is provided in the pipe section 23. This serves to guide the plastic granules trickling down through the annular gap 99 during operation under the outlet opening of the nozzle 43, so that the plastic granules are wetted well and uniformly.
- the second embodiment according to Figure 4 differs from the first in that the funnel-shaped guide piece 101a is slidably disposed on the pipe section 23.
- the funnel-shaped guide piece 101a is displaceable from a closed position (left half of the picture), in which the annular gap 99 is closed, into an open position (right half of the picture) in which an annular gap 99 is present.
- each other elongated holes 103 are provided in the shell of the pipe section 23.
- the slots are penetrated by bolts 105, which are screwed on the one hand in the funnel-shaped guide piece 101a and on the other hand inserted into brackets 107.
- the holders 107 are suspended on adjusting devices 109, for example compressed air cylinders.
- plastic granules are introduced into the feeder and optionally weighed. From the feeder the plastic granules get into the mixer direction. As long as the funnel-shaped guide piece 101a is in the upper end position, the passage of the plastic granules is impossible. As soon as the guide piece 101 a is moved down into the open position, the granules pass through the annular gap 99 in the passage 37.
- liquid additive Simultaneously with the opening of the annular gap liquid additive is injected through the nozzle into the passage where it wets the plastic granules.
- the control of the amount of the introduced additive can be done by pressurization. The higher the pressure exerted on the liquid additive, the greater the amount of liquid introduced per unit of time. To comply with the optimum granule / additive ratio thus the pressurization and the width of the annular gap can be changed.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH1705/04 | 2004-10-15 | ||
CH17052004 | 2004-10-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006039828A1 true WO2006039828A1 (de) | 2006-04-20 |
Family
ID=35519975
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CH2005/000594 WO2006039828A1 (de) | 2004-10-15 | 2005-10-11 | Verfahren und dosiereinrichtung zum dosieren eines additivs |
Country Status (1)
Country | Link |
---|---|
WO (1) | WO2006039828A1 (de) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB609329A (en) * | 1945-02-15 | 1948-09-29 | Hungerford Res Corp | Improvements in or relating to apparatus for conditioning solid materials in particle form |
US4252844A (en) * | 1978-07-26 | 1981-02-24 | Union Carbide Corporation | Process for mixing liquid additives with solid materials under sonic velocity conditions |
US4511603A (en) * | 1983-12-19 | 1985-04-16 | The Dow Chemical Company | Addition of additives to plastics |
-
2005
- 2005-10-11 WO PCT/CH2005/000594 patent/WO2006039828A1/de active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB609329A (en) * | 1945-02-15 | 1948-09-29 | Hungerford Res Corp | Improvements in or relating to apparatus for conditioning solid materials in particle form |
US4252844A (en) * | 1978-07-26 | 1981-02-24 | Union Carbide Corporation | Process for mixing liquid additives with solid materials under sonic velocity conditions |
US4511603A (en) * | 1983-12-19 | 1985-04-16 | The Dow Chemical Company | Addition of additives to plastics |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE60224408T2 (de) | Fluidinjektor mit lüftungs-/proportionieröffnungen | |
DE3431112C2 (de) | ||
DE69629515T2 (de) | Mischkopf für das Reakionsspritzgiessverfahren mit Vorrichtung zum Spülen mit Lösungsmittel | |
DE3517284A1 (de) | Verfahren und vorrichtung zum herstellen von mit zusatzmittel vermischten loeschmitteln | |
DE2649602A1 (de) | Verfahren und vorrichtung zum vermischen von mindestens zwei fluiden bestandteilen | |
DE3326016A1 (de) | Abgabevorrichtung | |
EP1827666B1 (de) | Mischreaktor und verfahren zum kontinuierlichen ausstossen eines behandelten stoffes mit einem dergestalten mischreaktor | |
DE3330557A1 (de) | Regeleinrichtung zur pulverzufuhr in einen gasstrom | |
EP3768563B1 (de) | Vorrichtung zum streuen von granulat | |
EP1771500B1 (de) | Verfahren zum mischen eines kunststoffgranulats mit einem additiv sowie mischeinrichtung zur durchführung des verfahrens und vorrichtung mit der mischeinrichtung | |
DE102019123200B4 (de) | Vorrichtung und verfahren zum zuführen eines flüssigen mediums | |
DE3421581C3 (de) | Vorrichtung für die dosierte Abgabe von mehreren Teilmengen zähflüssiger Stoffe, wie Gießharz | |
WO2006039828A1 (de) | Verfahren und dosiereinrichtung zum dosieren eines additivs | |
EP2468106A1 (de) | Vorrichtung und Verfahren zum Verteilen von Restluft in pastösen Massen, insbesondere zur Herstellung von Würsten | |
DE2305376C2 (de) | Vorrichtung zum Verhindern ungewollter Zumlschung von widerstandsvermindernden Additiven zu Wasser bei instationären Strömungsvorgängen | |
DE202006008764U1 (de) | Plastifizier- und Einspritzvorrichtung mit Aufschäumeinrichtung | |
AT401693B (de) | Zumischeinrichtung zum zumischen von zusatzmitteln zu einer flüssigkeit | |
EP3450024B1 (de) | Dosier- und applikationsanlage für ein feuchtigkeitshärtendes polymermaterial | |
EP2116330B1 (de) | Blockstation zum Aufblocken von Brillenglasrohlingen auf ein Blockstück | |
EP1194275B1 (de) | Spritzgiessvorrichtung | |
DE102005036691B4 (de) | Materialversorgungseinrichtung | |
DE3200802A1 (de) | "ferngesteuerte einspritzvorrichtung an einem mischkopf" | |
EP0638372A1 (de) | Gerät zum Injizieren von Gasen in Böden | |
DE60312278T2 (de) | Vorrichtung zur Herstellung von Silikon aus zwei Komponenten | |
EP0421050B1 (de) | Vorrichtung zum Führen einer unter Vorschubdruck stehenden pastösen Masse durch ein Rohr |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KM KP KR KZ LC LK LR LS LT LU LV LY MA MD MG MK MN MW MX MZ NA NG NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SM SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LT LU LV MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 05789281 Country of ref document: EP Kind code of ref document: A1 |