Sachet and strip of sachets for packaging a biological liquid substance, such as animal semen

Abstract

Sachet and strip of sachets for packaging a biological liquid substance, such as animal semen. The sachet is formed by two coupled and welded films of supple plastic material, delimiting a reception pouch of the substance, which has at one of its ends an opening for filling the empty sachet by means of a hollow cylindrical needle. These films have a pair of welding lines which form tabs starting out from said opening and axially and symmetrically penetrating the internal space of the sachet by converging towards the interior of the latter, their free ends being spaced apart by a value “e” which is substantially equal to πd/2, “d” being the value of the diameter of said needle, thus preventing the foam produced during filling from exiting the bag as the needle is withdrawn (F). Artificial insemination in breeding.

1 . A packaging sachet for a biological liquid substance, such as animal semen, formed by two coupled and welded films of flexible plastic material, delimiting a reception pouch of the substance, which has at one of its ends an opening for filling the empty sachet by means of a hollow cylindrical needle, characterised in that said films have a pair of welding lines which form tabs starting out from said opening and axially and symmetrically penetrating the internal space of the sachet by converging to the interior of the latter, their free ends being spaced apart by a value “e” which is substantially equal to πd/2, “d” being the value of the diameter of said needle, such that said needle passes between said tabs for said filling, the latter ensuring that the needle is scraped when it is withdrawn. 
   
   
       2 . The sachet as claimed in  claim 1 , characterised in that the two welding lines converge by forming an angle at the apex whereof the value a is between 20 and 60°, advantageously close to 45°. 
   
   
       3 . The sachet as claimed in  claim 1 , characterised in that its filling opening has, turned to the exterior of the sachet, an orifice zone of constant width “a”, substantially larger than said spread value “e” of the free ends of the welding lines. 
   
   
       4 . The sachet as claimed in  claim 3 , characterised in that said orifice zone is delimited on either side by a welded area each traversed by an orifice in which a retaining finger can engage during filling of the sachet. 
   
   
       5 . The sachet as claimed in  claim 1 , characterised in that the two welding lines have a reinforced end, for example in the form of a bead. 
   
   
       6 . The sachet as claimed in  claim 1 , characterised in that the end opposite the sachet ( 1 ) is fitted with an integrated canula, to be utilised for emptying out the sachet. 
   
   
       7 . A strip of sachets formed by juxtaposition of sachets ( 1 ), as claimed in  claim 1 , which are adjacent to one another and separated by a pre-cut-out line.