Blister-making machine, connected method for packing in blisters, and blister pack thus obtained

Abstract

Improved blister-making machine which, starting from a moldable strip ( 11 ), from a covering strip ( 14 ) and from noxious material ( 33 ) delivered and positioned by a distributor device ( 16 ) inside the blisters ( 30 ) made in the moldable strip ( 11 ), all being subsequently sealed by a sealing device ( 18 ), produces blister packs of the desired shape and sizes, wherein upstream of the sealing device ( 18 ) there is an insulated chamber ( 15 ) containing a pre-sealing device ( 17 ) continuously achieving continuous sealed bands ( 19 ) in proximity with at least two lateral edges ( 119 ) of the blister strip ( 13 ).

1 . Improved blister-making machine, able to produce blister packs of the desired shape and sizes starting from a moldable strip ( 11 ), on which blisters ( 30 ) are made so as to define a blister strip ( 13 ), from a covering strip ( 14 ) and from noxious material ( 33 ), comprising a distributor device ( 16 ) to deliver and position the noxious material ( 33 ) inside the blisters ( 30 ) and a sealing device ( 18 ) to seal the covering strip ( 14 ) to the blister strip ( 13 ), characterized in that upstream of the sealing device ( 18 ) there is an insulated chamber ( 15 ) into which the noxious material ( 33 ) is delivered and distributed and in which the covering strip ( 14 ) is applied onto the blister strip ( 13 ), said insulated chamber ( 15 ) comprising at least a pre-sealing device ( 17 ), configured to continuously achieve continuous sealed bands ( 19 ), in proximity with at least two lateral edges ( 119 ) of the combination of the blister strip ( 13 ) containing the noxious material ( 33 ) and of the covering strip ( 14 ). 
     
     
         2 . Improved blister-making machine as in  claim 1 , characterized in that depression means ( 24 ) are provided in order to keep the insulated chamber ( 15 ) in depression, the value of depression being correlated to the shape and characteristics of the powders produced by the noxious material ( 33 ), said depression being comprised between 30 Pa and 100 Pa. 
     
     
         3 . Improved blister-making machine as in any claim hereinbefore, characterized in that the distributor device ( 16 ) is present at least partially in the insulated chamber ( 15 ). 
     
     
         4 . Improved blister-making machine as in any claim hereinbefore, characterized in that the entrances to and exits from the insulated chamber ( 15 ) are protected. 
     
     
         5 . Improved blister-making machine as in any claim hereinbefore, characterized in that it comprises cleaning means ( 35 ) at least for the surfaces of the blister strip ( 13 ) to be pre-sealed, coherent with the pre-sealing bands ( 19 ). 
     
     
         6 . Improved blister-making machine as in any claim hereinbefore, characterized in that it comprises cleaning means ( 26 ,  34 ) for the external surfaces of the pre-sealed strip. 
     
     
         7 . Improved blister-making machine as in any claim hereinbefore, characterized in that it comprises a sealing unit ( 18 ) disposed after the exit of the pre-sealed strip from the insulated chamber ( 15 ). 
     
     
         8 . Improved blister-making machine as in any claim hereinbefore, characterized in that there is a shears ( 22 ) that eliminates at least the pre-sealed lateral bands ( 19 ), said shears ( 22 ) being able to cooperate with a safety container ( 23 ). 
     
     
         9 . Method to obtain blister packs containing a noxious material ( 33 ), characterized in that, in an insulated chamber ( 15 ), after inserting the noxious material into the blisters ( 30 ) made in a moldable strip ( 11 ), a covering strip ( 14 ) is disposed and pre-sealings are made, consisting of continuous longitudinal sealed bands ( 19 ) disposed at least in proximity with the longitudinal edges of the combined blister strip ( 13 ) and covering strip ( 14 ). 
     
     
         10 . Method as in  claim 9 , characterized in that at exit from the insulated chamber ( 15 ) the pre-sealed blister strip ( 13 ) is subjected to complete sealing by a sealing unit ( 18 ). 
     
     
         11 . Method as in  claim 9  or  10 , characterized in that the pre-sealed bands ( 19 ) are detached by means of a shears ( 22 ), said pre-sealed bands ( 19 ) being able to be sent to a safety container ( 23 ). 
     
     
         12 . Method as in any claim from  9  to  11 , characterized in that in cooperation with the exit from the insulated chamber ( 15 ), the external surfaces of the combined blister strip ( 13 ) and covering strip ( 14 ) with the continuous pre-sealing bands ( 19 ) are cleaned of the powdery residue of noxious material ( 33 ) possibly present. 
     
     
         13 . Method as in any claim from  9  to  12 , characterized in that at least the longitudinal zones of the blister strip ( 13 ) where pre-sealing will occur are cleaned, just before said pre-sealing action with the covering strip ( 14 ). 
     
     
         14 . Strip containing one or more intermediate blister packs to obtain one or more final blister packs containing noxious material ( 33 ) disposed in blisters ( 30 ), characterized in that it comprises a blister strip ( 13 ) coupled with a covering strip ( 14 ) and provided with continuous sealed bands ( 19 ), defined by pre-sealing in cooperation between the blister strip ( 13 ) and the covering strip ( 14 ), at least in proximity with at least two lateral edges ( 119 ).