EP0083323A2 - Method and apparatus for packaging products formed by casting in the thermoformed wrapper of a blister package - Google Patents
Method and apparatus for packaging products formed by casting in the thermoformed wrapper of a blister package Download PDFInfo
- Publication number
- EP0083323A2 EP0083323A2 EP82830310A EP82830310A EP0083323A2 EP 0083323 A2 EP0083323 A2 EP 0083323A2 EP 82830310 A EP82830310 A EP 82830310A EP 82830310 A EP82830310 A EP 82830310A EP 0083323 A2 EP0083323 A2 EP 0083323A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- sheet
- channel
- wrapper
- cells
- coolant
- 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
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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
- B65B63/00—Auxiliary devices, not otherwise provided for, for operating on articles or materials to be packaged
- B65B63/08—Auxiliary devices, not otherwise provided for, for operating on articles or materials to be packaged for heating or cooling articles or materials to facilitate packaging
Definitions
- the present invention relates to methods for packaging products formed by pouring into a thermo--formed wrapper of a blister-pack, and is concerned particularly with a method of the type in which the wrapper comprises a film of thermoplastics material having cells which are thermoformed and are each intended to receive a respective product.
- the product is poured into a mould of a material which can withstand the temperature, for example, a metal mould, and is subsequently put into the cells of the wrapper of the blister-pack after the product has been cooled to a temperature which the thermoplastics material of the wrapper can tolerate.
- the object of the present invention is to provide a process of the type specified above which does not have the aforementioned drawbacks.
- the present invention provides a process of the type specified above, characterised in that it includes the steps of pouring a metered quantity of molten product into each cell of the wrapper and simultaneously cooling the wrapper by a flow of liquid coolant in contact with the outer surface of the wrapper.
- the product is formed by being poured directly into the wrapper of the pack.
- a further subject of the present invention is constituted by a machine for packaging products formed by pouring into a blister-pack, the pack comprising a film of thermoplastics material with cells which are thermoformed and are each intended to receive a respective product, comprising:
- a pack of the type generally known in the art as a blister-pack is generally indicated 1.
- the pack 1 comprises a wrapper 2 formed by thermoforming a.sheet of thermoplastics film, for example, polyvinyl chloride (PVC).
- PVC polyvinyl chloride
- the flat surface of the sheet of thermoplastics film is deformed locally to form cells 3 each of which is intended to receive a respective product, for example, a pastel formed by pouring.
- the cells 3 are intended to receive pastels formed by the pouring of sorbitol.
- the sorbitol is heated to a temperature of the order of 85- 90 o C.
- the polyvinyl chloride (PVC) of the wrapper 2 can normally withstand a temperature of about 70°C but is deformed at higher temperatures.
- the blister-pack illustrated in Figure 1 further includes a sealing strip 4 which closes the cells 3.
- both the wrapper 2 and the sealing strip 4 are normally made from sheets of thermoplastics film which are unwound from corresponding supply reels.
- the product of the packaging operation is also in the form of a sheet which is subsequently cut and punched to form packs of the type illustrated in Figures 1 and 2.
- the pack 1 includes three parts two of which have cells 3 while the other has two flat faces which may be used, for example, for trade marks and information about the packaged product.
- thermoforming station for the first sheet 11 of thermoplastics film unwound from the first reel 1.0 is generally indicated 12.
- a filling station is interposed between the thermoforming station 12 and a sealing station 14 with which is associated a second reel 15 for supplying a second sheet 16 of thermoplastics film.
- a collecting station for the finished product, generally indicated 17, comprises a reel 18 on which the sheets 11, 16 are wound after they have passed through the sealing station 14.
- the filling station 14 includes a channel 13a which extends in the direction of displacement of the first sheet 11 of thermoplastics film between the forming station 12 and the sealing station 14.
- the channel 13a has a depth greater than the depth of the cells formed in the first sheet 11.
- the channel 13a has an inlet end 13b for the first, thermoformed sheet 11.
- the channel 13a has longitudinal ribs 13c and is overlain, close to the inlet end 13b, by a station for pouring metered quantities of the product to be packaged.
- a pump 13f which supplies the channel 13a with a liquid coolant is connected to the channel 13a by a pipe 13e.
- the intake side of the pump 13f is connected to a cooler 13g which is supplied with the ooolant discharged from the channel 13a through an aperture 13h in the bottom of the channel 13a close to the sealing station 14.
- the bottom of the channel 13a has a plurality of ventilation apertures 13i to which a suction pump 131 is connected.
- the first sheet 11 of thermoplastics film is supplied from the first reel 10 to the thermoforming station 12 where the flat surface of the sheet 11 is deformed locally to form longitudinal rows of cells of the type indicated 3 in Figures 1 and 2.
- thermoformed first sheet 11 Downstream of the thermoforming station 12, the thermoformed first sheet 11 is passed along the channel 13a so that the side walls of the channel support the longitudinal edges of the sheet 11 during its passage along the channel 13a.
- the machine according tp the invention is intended to package products formed by pouring into a blister-pack which includes four pairs of rows of cells 3 separated by intermediate flat portions of the thermoformed sheet 11.
- the longitudinal ribs 13c projecting from the bottom of the channel 13a support these intermediate portions of the thermoformed sheet 11.
- metered quantities of the product to be packaged are poured into each cell 3 of the wrapper 12 formed by thermoforming of the first sheet 11 of thermoplastics film, while the wrapper itself is immersed in the bath of liquid coolant which is present in the channel 13a.
- each cell 3 is in contact with the coolant which is kept at a temperature below the level which produces harmful phenomena, such as deformation of the wrapper itself.
- the pump 13f supplies the channel 13a with low temperature coolant from the cooler 13c.
- the wrapper In its movement towards the sealing station 14 along the channel 13, the wrapper is kept immersed in the bath of coolant so as to keep the outer surfaces of the cells 3 in contact with the coolant until the product therein has set.
- the coolant is discharged from the channel 13a and is directed to the cooler 13g so as to form a closed circuit for the coolant of which the channel 13a constitutes a part.
- the circulation of coolant in the channel 13a is facilitated by the movement of the first sheet 11 the cells 3 of which project into the channel and act as blades to push the coolant from the inlet end 13b towards the aperture 13h.
- thermoformed sheet 11 is kept in sliding contact with the side walls of the channel 13a so as to prevent the coolant leaving the channel itself.
- thermoformed sheet 11 Downstream of the discharge aperture 13h, the thermoformed sheet 11 is made to continue along the channel 13a towards the sealing station 14, until it reaches the apertures 13i through which drops of coolant adhering to the surface of the thermoformed sheet are removed by the suction pump 131.
- the second sheet 16 of thermoplastics film, supplied by the second reel 15, is applied and heat-sealed to the first, thermoformed sheet 11 so as to close the openings of the cells 3 . housing the poured products.
- the packaged product is wound in a strip onto the collecting reel 18, preferably after it has undergone an initial cutting and/or punching operation so as to allow the separation of the pairs of rows of cells present in the product leaving the sealing station 14, and to allow the subsequent longitudinal subdivision of the strips wound on the reel 18 to form packs of the type illustrated in Figures 1 and 2.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Containers And Plastic Fillers For Packaging (AREA)
- Auxiliary Devices For And Details Of Packaging Control (AREA)
Abstract
Description
- The present invention relates to methods for packaging products formed by pouring into a thermo--formed wrapper of a blister-pack, and is concerned particularly with a method of the type in which the wrapper comprises a film of thermoplastics material having cells which are thermoformed and are each intended to receive a respective product.
- In methods of the aforesaid type, there is a problem in preventing the product, which is normally hot to allow its pouring, from damaging the thermoplastics material of the wrapper, to which the pouring temperature is harmful.
- For this reason, in known processes the product is poured into a mould of a material which can withstand the temperature, for example, a metal mould, and is subsequently put into the cells of the wrapper of the blister-pack after the product has been cooled to a temperature which the thermoplastics material of the wrapper can tolerate.
- The technical solution described is unsatisfactory, since the separation of the formation by pouring from the packaging operation reduces the speed of the production process.
- The object of the present invention is to provide a process of the type specified above which does not have the aforementioned drawbacks.
- In order to achieve this object, the present invention provides a process of the type specified above, characterised in that it includes the steps of pouring a metered quantity of molten product into each cell of the wrapper and simultaneously cooling the wrapper by a flow of liquid coolant in contact with the outer surface of the wrapper.
- By virtue of this characteristic, the product is formed by being poured directly into the wrapper of the pack.
- A further subject of the present invention is constituted by a machine for packaging products formed by pouring into a blister-pack, the pack comprising a film of thermoplastics material with cells which are thermoformed and are each intended to receive a respective product, comprising:
- . - a first reel for supplying a first sheet of thermoplastics film;
- - a station for thermoforming the first sheet of thermoplastics film unwound from the first supply reel, where longitudinal rows of cells are formed by local deformation of the flat surface of the first sheet;
- - a filling station where the products are intro--duced into the cells;
- - a second reel for supplying a second sheet of thermoplastics film, and
- - a sealing station where the second sheet of thermoplastics film is unwound from the second reel and applied to the first sheet of thermoplastics film, characterised in that the filling station includes:
- - a channel which extends in the direction of displacement of the first sheet of thermoplastics film between the forming station and the sealing station and has a depth greater than the depth of the cells, the channel having an inlet end for the first, thermoformed sheet and the side walls of the channel supporting the longitudinal edges of the first sheet during its passage between the two stations with the cells in the channel;
- - means for supplying a liquid coolant to the channel at the inlet end for the first, preformed sheet;
- - means for discharging the coolant from a discharge zone of the channel close to the sealing station;
- - means for cooling the coolant discharged from the channel and conveying it to the supply means, whereby the coolant flows through a closed circuit of which the channel constitutes a part, and
- - a station for pouring metered quantities of molten product into the cells of the first thermoformed sheet, which overlies the channel close to the inlet end.
- By virtue of this characteristic, in the machine according to the invention, a flow of liquid coolant is kept in contact with the outer surface of the wrapper of the pack which has been made by thermoforming a sheet of thermoplastics film, while the product is poured into the cells of the wrapper itself.
- The invention will now be described, purely by way of non-limiting example, with reference to the appended drawings, in which:
- Figures 1 and 2 are respectively a view from below and a side view of a blister-pack;
- Figure 3 is a schematic elevational view of a machine according to the invention;
- Figure 4 illustrates several parts of Figure 3 in greater detail and on an enlarged scale, and
- Figure 5 is a section taken on the line V-V of Figure 4.
- In Figures 1 and 2, a pack of the type generally known in the art as a blister-pack is generally indicated 1. The pack 1 comprises a
wrapper 2 formed by thermoforming a.sheet of thermoplastics film, for example, polyvinyl chloride (PVC). The flat surface of the sheet of thermoplastics film is deformed locally to formcells 3 each of which is intended to receive a respective product, for example, a pastel formed by pouring. - In a typical example of use of the blister-pack, the
cells 3 are intended to receive pastels formed by the pouring of sorbitol. In order to allow pouring, the sorbitol is heated to a temperature of the order of 85-90 o C. - The polyvinyl chloride (PVC) of the
wrapper 2 can normally withstand a temperature of about 70°C but is deformed at higher temperatures. - The blister-pack illustrated in Figure 1 further includes a sealing strip 4 which closes the
cells 3. - In the processes of blister-packaging carried out on an industrial scale, both the
wrapper 2 and the sealing strip 4 are normally made from sheets of thermoplastics film which are unwound from corresponding supply reels. - The product of the packaging operation is also in the form of a sheet which is subsequently cut and punched to form packs of the type illustrated in Figures 1 and 2.
- The pack 1 includes three parts two of which have
cells 3 while the other has two flat faces which may be used, for example, for trade marks and information about the packaged product. - In Figure 3 a supply reel for a
first sheet 11 of the thermoplastics film is indicated 10. - A thermoforming station for the
first sheet 11 of thermoplastics film unwound from the first reel 1.0 is generally indicated 12. - A filling station, generally indicated 13, is interposed between the
thermoforming station 12 and asealing station 14 with which is associated asecond reel 15 for supplying asecond sheet 16 of thermoplastics film. - ,A collecting station, for the finished product, generally indicated 17, comprises a
reel 18 on which thesheets sealing station 14. - As best seen in Figure 4, the
filling station 14 includes achannel 13a which extends in the direction of displacement of thefirst sheet 11 of thermoplastics film between the formingstation 12 and thesealing station 14. - The
channel 13a has a depth greater than the depth of the cells formed in thefirst sheet 11. - The
channel 13a has aninlet end 13b for the first,thermoformed sheet 11. - The
channel 13a has longitudinal ribs 13c and is overlain, close to theinlet end 13b, by a station for pouring metered quantities of the product to be packaged. - A
pump 13f which supplies thechannel 13a with a liquid coolant is connected to thechannel 13a by apipe 13e. - The intake side of the
pump 13f is connected to acooler 13g which is supplied with the ooolant discharged from thechannel 13a through anaperture 13h in the bottom of thechannel 13a close to thesealing station 14. - In the end portion between the
aperture 13h and thesealing station 14, the bottom of thechannel 13a has a plurality ofventilation apertures 13i to which asuction pump 131 is connected. - In operation of the machine according to the invention, the
first sheet 11 of thermoplastics film is supplied from thefirst reel 10 to thethermoforming station 12 where the flat surface of thesheet 11 is deformed locally to form longitudinal rows of cells of the type indicated 3 in Figures 1 and 2. - Downstream of the
thermoforming station 12, the thermoformedfirst sheet 11 is passed along thechannel 13a so that the side walls of the channel support the longitudinal edges of thesheet 11 during its passage along thechannel 13a. - In the embodiment illustrated, the machine according tp the invention is intended to package products formed by pouring into a blister-pack which includes four pairs of rows of
cells 3 separated by intermediate flat portions of thethermoformed sheet 11. - As illustrated in Figure 5, the longitudinal ribs 13c projecting from the bottom of the
channel 13a support these intermediate portions of thethermoformed sheet 11. - At the
pouring station 13d, metered quantities of the product to be packaged are poured into eachcell 3 of thewrapper 12 formed by thermoforming of thefirst sheet 11 of thermoplastics film, while the wrapper itself is immersed in the bath of liquid coolant which is present in thechannel 13a. - Thus, the outer surface of each
cell 3 is in contact with the coolant which is kept at a temperature below the level which produces harmful phenomena, such as deformation of the wrapper itself. - The
pump 13f supplies thechannel 13a with low temperature coolant from the cooler 13c. - In its movement towards the
sealing station 14 along thechannel 13, the wrapper is kept immersed in the bath of coolant so as to keep the outer surfaces of thecells 3 in contact with the coolant until the product therein has set. - At the
aperture 13h the coolant is discharged from thechannel 13a and is directed to the cooler 13g so as to form a closed circuit for the coolant of which thechannel 13a constitutes a part. The circulation of coolant in thechannel 13a is facilitated by the movement of thefirst sheet 11 thecells 3 of which project into the channel and act as blades to push the coolant from theinlet end 13b towards theaperture 13h. - From Figure 5 it can be seen how the longitudinal edges of the
thermoformed sheet 11 are kept in sliding contact with the side walls of thechannel 13a so as to prevent the coolant leaving the channel itself. - Downstream of the
discharge aperture 13h, thethermoformed sheet 11 is made to continue along thechannel 13a towards thesealing station 14, until it reaches theapertures 13i through which drops of coolant adhering to the surface of the thermoformed sheet are removed by thesuction pump 131. - At the
sealing station 14, thesecond sheet 16 of thermoplastics film, supplied by thesecond reel 15, is applied and heat-sealed to the first,thermoformed sheet 11 so as to close the openings of thecells 3 . housing the poured products. At thecollecting station 17, the packaged product is wound in a strip onto thecollecting reel 18, preferably after it has undergone an initial cutting and/or punching operation so as to allow the separation of the pairs of rows of cells present in the product leaving thesealing station 14, and to allow the subsequent longitudinal subdivision of the strips wound on thereel 18 to form packs of the type illustrated in Figures 1 and 2. - Naturally, the principle of the invention remaining the same, the stages of the process, the details of realisation and the forms of embodiment may be varied widely with respect to that described and illustrated without thereby departing from the scope of the present invention.
Claims (6)
characterised in that the filling station (13) includes:
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT68720/81A IT1145646B (en) | 1981-12-30 | 1981-12-30 | PROCESS AND MACHINE FOR PACKAGING PRODUCTS FORMED BY CASTING IN THE THERMOFORMED ENCLOSURE OF A BLISTER TYPE PACKAGE |
IT6872081 | 1981-12-30 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0083323A2 true EP0083323A2 (en) | 1983-07-06 |
EP0083323A3 EP0083323A3 (en) | 1984-04-04 |
EP0083323B1 EP0083323B1 (en) | 1986-10-29 |
Family
ID=11310381
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP82830310A Expired EP0083323B1 (en) | 1981-12-30 | 1982-12-27 | Method and apparatus for packaging products formed by casting in the thermoformed wrapper of a blister package |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0083323B1 (en) |
DE (1) | DE3273966D1 (en) |
DK (1) | DK155156C (en) |
IE (1) | IE54070B1 (en) |
IT (1) | IT1145646B (en) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2608560A1 (en) * | 1986-11-13 | 1988-06-24 | Novopolotsky Politekhn | Automatic packing of sprayed bitument in polyolefin film |
FR2626669A1 (en) * | 1988-01-29 | 1989-08-04 | Perinetti Bertrand | Method and device for making a pellet intended to make it possible to check that a product has been kept below a given limit temperature, and test pellet produced |
EP0825119A1 (en) * | 1996-08-15 | 1998-02-25 | Santrade Ltd. | Method and apparatus for producing and wrapping melt portions |
US5729958A (en) * | 1992-12-01 | 1998-03-24 | R. P. Scherer Corporation | Method for manufacturing freeze dried dosages in a multilaminate blister pack |
CN101850857A (en) * | 2010-07-01 | 2010-10-06 | 浙江希望机械有限公司 | Intelligent high-speed rolled sheet type blister packing machine |
DE102009047151B3 (en) * | 2009-11-25 | 2011-07-28 | Uhlmann Pac-Systeme GmbH & Co KG, 88471 | sealing station |
US8647098B2 (en) | 2010-09-22 | 2014-02-11 | Stratasys, Inc. | Liquefier assembly for use in extrusion-based additive manufacturing systems |
US8815141B2 (en) | 2010-09-22 | 2014-08-26 | Stratasys, Inc. | Method for building three-dimensional models with extrusion-based additive manufacturing systems |
CN108454926A (en) * | 2018-04-17 | 2018-08-28 | 江西铜鼓仁和制药有限公司 | A kind of automatic filling system of medical syrup class |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4025683A1 (en) * | 1990-06-13 | 1992-02-27 | Juergen Josef Joisten | Silicone paper bags for transportation of adhesives - have outlets in base and sides which are held away from container eliminating packaging residues |
CH688784A5 (en) * | 1993-03-05 | 1998-03-13 | Escher Wyss Gmbh | Cooling device. |
IN2014DN07069A (en) * | 2012-02-28 | 2015-04-10 | Procter & Gamble | |
CN111114910B (en) * | 2018-10-31 | 2021-09-21 | 中达电子(江苏)有限公司 | Heat sealing method of bubble cap machine |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2505603A (en) * | 1946-07-16 | 1950-04-25 | Cellophane Sa | Process for the molding in their own packing of fusible or thermoplastic products |
FR2122662A5 (en) * | 1971-01-19 | 1972-09-01 | Air Liquide | Storage of two substances in one container without mixing - - by refrigeration of one substance |
US3837778A (en) * | 1972-12-22 | 1974-09-24 | R Parker | Apparatus for package molding, roofing asphalt |
FR2411132A1 (en) * | 1978-06-02 | 1979-07-06 | Tecca | Container forming and filling installation - with thermo-formable film shaped into containers to which cover film is sealed by heating electrodes |
-
1981
- 1981-12-30 IT IT68720/81A patent/IT1145646B/en active
-
1982
- 1982-12-23 IE IE3079/82A patent/IE54070B1/en not_active IP Right Cessation
- 1982-12-27 DE DE8282830310T patent/DE3273966D1/en not_active Expired
- 1982-12-27 EP EP82830310A patent/EP0083323B1/en not_active Expired
- 1982-12-29 DK DK578082A patent/DK155156C/en not_active IP Right Cessation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2505603A (en) * | 1946-07-16 | 1950-04-25 | Cellophane Sa | Process for the molding in their own packing of fusible or thermoplastic products |
FR2122662A5 (en) * | 1971-01-19 | 1972-09-01 | Air Liquide | Storage of two substances in one container without mixing - - by refrigeration of one substance |
US3837778A (en) * | 1972-12-22 | 1974-09-24 | R Parker | Apparatus for package molding, roofing asphalt |
FR2411132A1 (en) * | 1978-06-02 | 1979-07-06 | Tecca | Container forming and filling installation - with thermo-formable film shaped into containers to which cover film is sealed by heating electrodes |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2608560A1 (en) * | 1986-11-13 | 1988-06-24 | Novopolotsky Politekhn | Automatic packing of sprayed bitument in polyolefin film |
FR2626669A1 (en) * | 1988-01-29 | 1989-08-04 | Perinetti Bertrand | Method and device for making a pellet intended to make it possible to check that a product has been kept below a given limit temperature, and test pellet produced |
US5729958A (en) * | 1992-12-01 | 1998-03-24 | R. P. Scherer Corporation | Method for manufacturing freeze dried dosages in a multilaminate blister pack |
EP0825119A1 (en) * | 1996-08-15 | 1998-02-25 | Santrade Ltd. | Method and apparatus for producing and wrapping melt portions |
US6217697B1 (en) | 1996-08-15 | 2001-04-17 | Santrade Ltd. | Method for producing and coating melt portions as well as system and apparatus |
DE102009047151B3 (en) * | 2009-11-25 | 2011-07-28 | Uhlmann Pac-Systeme GmbH & Co KG, 88471 | sealing station |
US9021770B2 (en) | 2009-11-25 | 2015-05-05 | Uhlmann Pac-Systeme Gmbh & Co. Kg | Sealing station |
CN101850857A (en) * | 2010-07-01 | 2010-10-06 | 浙江希望机械有限公司 | Intelligent high-speed rolled sheet type blister packing machine |
US8647098B2 (en) | 2010-09-22 | 2014-02-11 | Stratasys, Inc. | Liquefier assembly for use in extrusion-based additive manufacturing systems |
US8815141B2 (en) | 2010-09-22 | 2014-08-26 | Stratasys, Inc. | Method for building three-dimensional models with extrusion-based additive manufacturing systems |
CN108454926A (en) * | 2018-04-17 | 2018-08-28 | 江西铜鼓仁和制药有限公司 | A kind of automatic filling system of medical syrup class |
Also Published As
Publication number | Publication date |
---|---|
DK578082A (en) | 1983-07-01 |
EP0083323A3 (en) | 1984-04-04 |
IT8168720A0 (en) | 1981-12-30 |
DE3273966D1 (en) | 1986-12-04 |
IT1145646B (en) | 1986-11-05 |
DK155156C (en) | 1989-07-10 |
DK155156B (en) | 1989-02-20 |
EP0083323B1 (en) | 1986-10-29 |
IE823079L (en) | 1983-06-30 |
IE54070B1 (en) | 1989-06-07 |
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