Tamper-resistant sealing system between container and lid

Abstract

a tamper-resistant sealing system between a container body and the lid, both obtained by a thermoforming process, in which said contained body and said lid have a respective curved or grooved edge structured to fitted one to another, each curved or grooved edge including a top portion and an outer wall portion, said outer wall portion of said lid presenting a pair of weakening lines defining a breakable and removable strip there between and constraint means is provided between said outer wall portion of said container body and said lid.

1 . A tamper-resistant sealing system, between a container body and he lid both obtained by a thermoforming process, comprising said container body and said lid each comprising a respective curved or grooved edge arranged to engage with one another, each curved or grooved edge comprising a top portion and an outer wall portion, said outer wall portion of said lid having a pair of weakening lines delimiting a breakable and removable strip therebetween, wherein it the strip comprises a constraint means between said outer wall portions of said contained body and said lid.¶ 
   
   
       2 . A system as claimed in  claim 1 , wherein said constraint means comprises a fixing means.  
   
   
       3 . A system is claimed in  claim 2 , wherein said fixing means comprises a bonding agent.  
   
   
       4 . A system as claimed in  claim 2 , wherein said fixing means comprises a welding.  
   
   
       5 . A system as claimed in  claim 2 , wherein each said outer wall portion ends with a respective flanged edge at which said fixing means is provided.  
   
   
       6 . A system as claimed in  claim 1 , wherein said constraint means comprises a curled end rim a portion of said outer wall portion of said edge, and an end rim portion of said outer wall portion of said edge, said curled end select per for scratch that rim portion delimiting at least one peripheral notch arranged to receive and trap said end rim of portion.  
   
   
       7 . A system is claimed in  claim 6 , wherein said peripheral notch has inner and outer sides, one of which acts as an invitation for said end rim portion to enter set notch.  
   
   
       8 . A system as claimed in  claim 6 , wherein said end rim of portion is flanged.  
   
   
       9 . A system as claimed in  claim 6 , wherein said outer wall portion ends with an enlargement delimiting an upper inclined-plane invitation surface, and a lower undercut portion for snap-fitting said end rim portion.  
   
   
       10 . A system as claimed in  claim 9 , wherein said curled end rim portion delimiting said peripheral notch has a least one peripheral stiffening rim extending opposite to said enlargement.  
   
   
       11 . A system as claimed in  claim 1 , wherein said breakable and removable strip comprises a tearing tag.  
   
   
       12 . A system as claimed in  claim 1 , wherein 
 said outer wall portion of said edge of said container body comprises, in sequence, from said transverse top portion,    an upper substantially vertical length,    a short and radiused length extending inwards and delimiting an outer undercut shoulder,    a downwards flared intermediate length, and    a lower length adjacent to said end rim portion and,    correspondingly, said outer wall of said edge of said lid comprises, in sequence,    an upper wall length extending, in use, substantially vertical,    a short inwards radiused wall portion designed to engage with said outer undercut shoulder delimited in the wall portion,    an intermediate wall length extending flared outwards, and    a lower length designed to abut, in use, against said lower length.    
   
   
       13 . A system as claimed in  claim 12 , wherein said lid has an inner wall.  
   
   
       14 . A system as claimed in  claim 13 , wherein said edge of said container body comprises an inner wall, including, in sequence, 
 a lower undercut wall length,    an intermediate outwardly radiused length, and    an upper undercut wall length, which is connected to said top portion and,    correspondingly, said edge of said lid comprises    a lower undercut length,    a projecting intermediate length, which is radiused upwards with an upper length connected to said top portion.    
   
   
       15 . A system according to  claim 14 , wherein said outer wall portions of said edge of said container body and said lid are mutually angled through a negative angle.