Plastic Lid With Integrally Connected Film And Container Comprising Said Lid

Abstract

The invention concerns an injection moulded packaging ( 1 ) comprising a plastic material container ( 2 ), such as a polypropylene container, and a lid ( 3 ), said lid ( 3 ) comprising a first portion ( 10 ) in the form of a plastic material film and an injection moulded plastic material second portion ( 20 ), said second portion ( 20 ) being adapted to be heat sealed to a rim ( 6 ) of said container ( 2 ) by heating the plastic material ( 30 ) of said second portion ( 20 ) in a peripheral edge region ( 4 ) of said lid ( 3 ) to a heat sealing temperature T, said first ( 10 ) and second ( 20 ) portions being integrally connected, such as through an IML-process, said first portion ( 10 ) defining an upper surface ( 11 ) of said lid ( 3 ) facing away from said container ( 2 ). The first portion ( 10 ) covers said second portion ( 20 ) at least along said peripheral edge region ( 4 ), said first portion ( 10 ) including along said peripheral edge region ( 4 ) a layer ( 12 ) of a plastic material which is dimensionally stable at said heat sealing temperature T.

1 . A packaging ( 1 ) comprising an injection moulded plastic material container ( 2 ), such as a polypropylene container, and a lid ( 3 ), said lid ( 3 ) comprising:
 a first portion ( 10 ) in the form of a plastic material film integrally connected with an injection moulded second portion ( 20 ) of a plastic material having a melting point T 1 ,   said second portion ( 20 ) being adapted to be heat sealed to a rim ( 6 ) of said container ( 2 ) by heating the plastic material ( 30 ) of said second portion ( 20 ) in a peripheral edge region ( 4 ) of said lid ( 3 ) to a heat sealing temperature T,   said first portion ( 10 ) preferably defining an upper surface ( 11 ) of said lid ( 3 ) facing away from said container ( 2 ),   wherein said first portion ( 10 ) covers said second portion ( 20 ) at least along said peripheral edge region ( 4 ),   said first portion ( 10 ) including along said peripheral edge region ( 4 ) a layer ( 12 ) of a plastic material which has a melting point T 2  higher than said melting point T 1  of the plastics material of said second portion ( 20 ).   
     
     
         2 . The packaging of  claim 1 , wherein said second portion ( 20 ) defines the surface of said lid ( 3 ) that faces the interior of said container ( 2 ), said first portion ( 10 ) covering all or essentially all of said second portion ( 20 ). 
     
     
         3 . The packaging of  claim 1 , wherein said second portion ( 20 ) comprises an annular body, said first portion ( 10 ) spanning across said annular body and defining also a surface of said lid that faces the interior of said container ( 2 ). 
     
     
         4 . The packaging of  claim 1 , wherein said first portion ( 10 ) carries indicia relating to the contents of said container ( 2 ), said indicia being visible when said lid ( 3 ) is sealed to said container ( 2 ). 
     
     
         5 . The packaging according to  claim 1 , wherein said indicia is printed on said first portion ( 10 ) prior to connecting said first portion ( 10 ) with said second portion ( 20 ). 
     
     
         6 . The packaging according to  claim 1 , wherein said second portion ( 20 ) and said container ( 2 ) include means ( 100 ) mechanically engaging each other to secure said lid ( 3 ) to said container ( 2 ). 
     
     
         7 . The packaging according to  claim 1 , wherein said layer ( 12 ) comprises a polyamide- or PET material layer. 
     
     
         8 . The packaging according to  claim 1 , wherein said first portion ( 10 ) includes a barrier layer ( 14 ) for controlling air permeability of said lid ( 3 ), said barrier layer ( 14 ) preferably being made of a material selected from the group of SiOx and PVDc. 
     
     
         9 . The packaging according to  claim 1 , wherein said first portion ( 10 ) includes a further layer ( 16 ), such as a polypropylene material layer, fused to said second portion ( 20 ) to define said integral connection. 
     
     
         10 . The packaging according to  claim 1 , wherein said second portion ( 20 ) comprises polypropylene, optionally a polypropylene material containing additives for controlling the strength of said heat seal. 
     
     
         11 . The packaging according to  claim 1 , wherein said lid ( 3 ) includes along said peripheral edge region ( 4 ) a recess ( 16 ) such that said second portion ( 20 ) has a reduced thickness along said peripheral region ( 4 ). 
     
     
         12 . A lid for a plastic material container ( 2 ), said lid ( 3 ) comprising:
 a first portion ( 10 ) in the form of a plastic material film and an injection moulded plastic material second portion ( 20 ),   said second portion ( 20 ) being adapted to be heat sealed to a rim ( 6 ) of said container ( 2 ) by heating the plastic material of said second portion ( 20 ) in a peripheral edge region ( 4 ) of said lid ( 3 ) to a heat sealing temperature T, said first ( 10 ) and second ( 20 ) portions being fused together, such as through an IML-process,   said first portion ( 10 ) defining an upper surface ( 11 ) of said lid ( 3 ) adapted to face away from said container ( 2 ),   wherein said first portion ( 10 ) covers said second portion ( 20 ) at least along said peripheral edge region ( 4 ),   said first portion ( 10 ) including along said peripheral edge region ( 4 ) a layer ( 12 ) of a plastic material, such as polyamide or PET,   which remains dimensionally stable at the temperature T where said plastic material of said second portion ( 20 ) is suitable for said heat sealing.   
     
     
         13 . The lid of  claim 12 , wherein said second portion ( 20 ) plastic material comprises polypropylene PP. 
     
     
         14 . A lid for a plastic material container ( 2 ), said lid ( 3 ) comprising:
 a first portion ( 10 ) in the form of a plastic material film and an injection moulded plastic material second portion ( 20 ), said second portion ( 20 ) being adapted to be heat sealed to a rim ( 6 ) of said container ( 2 ) by heating the plastic material of said second portion ( 20 ) in a peripheral edge region ( 4 ) of said lid ( 3 ) to a heat sealing temperature T, said first ( 10 ) and second ( 20 ) portions being fused together, such as through an IML-process, said first portion ( 10 ) defining an upper surface ( 11 ) of said lid ( 3 ) adapted to face away from said container ( 2 ), wherein said first portion ( 10 ) covers said second portion ( 20 ) at least along said peripheral edge region ( 4 ), said first portion ( 10 ) including along said peripheral edge region ( 4 ) a layer ( 12 ) of polyamide or PET, and said second portion ( 20 ) plastic material and said container plastic material being polypropylene PP.   
     
     
         15 . A method of heat sealing the packaging of  claim 1 , wherein said heat sealing temperature is selected to be between said temperature T 1  and T 2 .