Lid part for a container

Abstract

A lid part for a container, the lid part is substantially made from a thermoplastic material and includes a connection portion for connection to a rim of a container part and a lid which is pivotably connected to the connection portion. The connection portion includes an access opening and a circumferential first flange surrounding the access opening, the lid including a circumferential lid flange extending towards the connection portion, perimeters of the lid flange and of first flange mutually adapted to allow the lid to close in a sealing manner on the first flange of the connection portion, and an area of the access opening is at least about 50 cm 2 .

1 . A lid part for a container, said lid part substantially made from a thermoplastic material and comprising a connection portion for connection to a rim of a container part and a lid which is pivotably connected to said connection portion, said connection portion comprising an access opening and a circumferential first flange surrounding said access opening, said lid comprising a circumferential lid flange extending towards said connection portion, perimeters of said lid flange and of first flange mutually adapted to allow said lid to close in a sealing manner on said first flange of said connection portion, and an area of said access opening is at least about 50 cm 2 . 
     
     
         2 . The lid part according to  claim 1 , wherein said circumferential first flange has a first perimeter near said connection portion and a second perimeter near the rim of said flange at an end of said flange away from said connection portion, said second perimeter of circumferential first flange is larger than its first perimeter, and said lid has a first internal perimeter near said lid and a second internal perimeter near the rim of said lid flange, said second, internal perimeter of said lid is smaller than said first perimeter near the rim of said lid flange, said perimeters of said lid flange and of first flange mutually adapted to allow said lid to close in a sealing manner on said first flange of said connection portion with its lid flange surrounding said first flange. 
     
     
         3 . The lid part according to  claim 1 , wherein said area is at least about 75 cm 2 . 
     
     
         4 . The lid part according to  claim 1 , wherein said area is less than about 200 cm 2 . 
     
     
         5 . The lid part according to  claim 1 , wherein said first flange bounds said access opening. 
     
     
         6 . The lid part according to  claim 1 , wherein said first flange fans or flares out away from said access opening, thus increasing a perimeter of said first flange. 
     
     
         7 . The lid part according to  claim 1 , wherein said circumferential first flange circumferentially at its outer periphery thickens near or at said rim of said first flange. 
     
     
         8 . The lid part according to  claim 1 , wherein said second internal perimeter of said lid flange is about 2-7% smaller than said first perimeter of said connection portion. 
     
     
         9 . The lid part according to  claim 1 , wherein said access opening is substantially round or substantially elliptic. 
     
     
         10 . The lid part according to  claim 1 , wherein an area of said access opening is at least 50% of the area of the connection portion. 
     
     
         11 . The lid part according to  claim 1 , wherein an inner diameter of the access opening is about 9-13 cm, in an embodiment a diameter of the connection portion is about 10-13 cm. 
     
     
         12 . The lid part according to  claim 1 , wherein said lid flange is of a thermoplastic material allowing its perimeters to expand when placing said lid on said first flange, and wherein said first and second perimeter of said lid flange, if said lid is not closing said opening, is smaller than the perimeters of said first flange. 
     
     
         13 . The lid part according to  claim 1 , wherein the thickness of said first flange in view of its thermoplastic material is selected to provide a stiff flange. 
     
     
         14 . The lid part according to  claim 1 , wherein said lid part is made of a thermoplastic polymer selected from the group consisting of polyethylene (PE) and polypropylene (PP). 
     
     
         15 . The lid part according to  claim 1 , wherein said lid is of a thermoplastic material having an elasticity such that it allows hermetic sealing of said lid on said flange of said connection portion via said lid flange and said first flange. 
     
     
         16 . The lid part according to  claim 1 , wherein said connection portion comprises a wall provided with said access opening, and said first flange extends from said wall, said wall and said lid when closing said access opening provide closure for a top of said container part. 
     
     
         17 . The lid part according to  claim 1 , wherein said connection portion comprises a circumferential rim which has a circumferential groove for receiving said rim of said container part. 
     
     
         18 . The lid part according to  claim 1 , wherein said connection portion comprises stacking cams. 
     
     
         19 . The lid part according to  claim 18 , wherein a circumscribed area of said circumferential rim is larger than the area of the access opening. 
     
     
         20 . The lid part according to  claim 1 , wherein said circumferential first flange has a first perimeter near said connection portion and a second perimeter near the rim of said flange at an end of said flange away from said connection portion, said second perimeter of circumferential first flange is smaller than its first perimeter, and said lid has a first internal perimeter near said lid and a second internal perimeter near the rim of said lid flange, said second, internal perimeter of said lid is larger than said first perimeter near the rim of said lid flange, said perimeters of said lid flange and of first flange mutually adapted to allow said lid to close in a sealing manner on said first flange of said connection portion with said first flange surrounding said lid flange. 
     
     
         21 . A container comprising the lid part of  claim 1  and a container part, wherein said container part comprises a bottom and connected to said bottom a circumferential container wall ending in a rim for receiving said lid part.