Closure package and manufacturing method thereof

Abstract

An improved valve ( 1 ) and countervalve ( 2 ) package and the manufacturing method thereof are disclosed. The package comprises at least one valve provided with a housing pocket and a countervalve, mutually coupled with respective peripheral surfaces with respect to said pocket, and along a substantial portion of the common perimeter edge of the valve ( 1 ) and of the countervalve ( 2 ) a sealing bead ( 3 ) is externally applied, obtained from an injectable plastic material through an injection mould

1 . A package comprising at least one valve provided with a housing pocket and a countervalve, mutually coupled on surfaces of respective peripheral flanged portions, wherein along a substantial part of a common perimeter edge of said flanged portions of valve ( 1 ) and countervalve ( 2 ), a sealing head ( 3 ) of injectable plastic material is externally applied by moulding. 
     
     
         2 . The package as claimed in  claim 1 , wherein said bead of
 injectable plastic material has larger-extension areas alternated with smaller-extension areas.   
     
     
         3 . The package as claimed in  claim 2 , wherein said larger-extension areas have a width (D) of about 1 to 5 mm, protruding outside said perimeter edge by about 0.5 to 1.2 mm. 
     
     
         4 . The package as claimed in  claim 2 , wherein said smaller-extension areas have a width (d) such as to cover the outer surface of the valve or countervalve at the most on a width of 1 mm. 
     
     
         5 . The package as claimed in  claim 1 , wherein the height or thickness of said bead ( 3 ) is of about 0.2 to 2 mm on each side, in addition to the overall thickness of the flanged portions of the valve and countervalve and any other elements laid in between. 
     
     
         6 . The package as claimed in  claim 1 , wherein said bead ( 3 ) has at least one increased-thickness gripping element ( 5   a ,  5   b ) adjacent to a short bead area ( 3 ) having reduced-thickness or preferential-ripping means ( 5   c ). 
     
     
         7 . The package as claimed in  claim 1 , wherein said injectable plastic material has adhesive properties but not intimate bonding properties with respect to the material of said valve and countervalve. 
     
     
         8 . The package as claimed in  claim 7 , wherein said injectable plastic material comprises an amount of 0-100% wt of rubber/elastomer. 
     
     
         9 . The package as claimed in  claim 1 , wherein said injectable plastic material is TPE. 
     
     
         10 . The package as claimed in  claim 1 , wherein said injectable plastic material comprises a polypropylene-based (PP) material. 
     
     
         11 . The package as claimed in  claim 1 , wherein at leas said valve or said countervalve are made of polyetylenteraphtalate (PET). 
     
     
         12 . The package as claimed in  claim 1 , wherein at least said valve provided with pocket is made of thermoformable material. 
     
     
         13 . The package as claimed in  claim 1 , wherein said countervalve is a planar cardboard backing. 
     
     
         14 . The package as claimed in  claim 1 , wherein said valve and countervalve have a perimetral flanged portion provided with retaining means, in the shape of holes and/or drawings and/or cavities, suited for cooperating in the retaining of said sealing bead ( 3 ). 
     
     
         15 . A packaging method of an object by means of a package
 as claimed in  claim 1 , wherein said valve ( 1 ) provided with housing pocket is obtained from a continuous web of thermoformable material and subsequently filled with the object to be packaged, wherein   a shearing and separation of said valve ( 1 ) from the continuous web of thermoformable material is made to occur before the coupling with a countervalve ( 2 ) already cut to measure, wherein   said coupled valve ( 1 ) and countervalve ( 2 ) are then inserted into an injection mould and a bead of injectable plastic material ( 3 ) is directly injection-moulded outside and along the common perimeter edge of said valve and countervalve.   
     
     
         16 . The packaging method as claimed in  claim 15 , wherein deflection barriers of the injection flow of said injectable plastic material are defined in said mould, between a point of
 injection into the mould and a groove meant to define said sealing bead ( 3 ), so as to divert the flow of injectable plastic to said first product; registering tangible product on said computer; and responsive to registering the second product, enhancing said item in said computer activity.