Packaging lid

Abstract

A packaging lid for mounting over an opening of a packaging container. The lid includes a top side that in a mounted state extends over an opening of the container and a skirt extending from the top side. The skirt has on an inner side thereof resilient members adapted to cooperate with an outwardly projecting ridge on an outer side of the circumferential wall of the container so as to secure the lid to the container. The resilient members are formed as resilient elongate strips having two ends attached to the inner side of the skirt and formed as an arch which, in an unloaded state, has a rise with respect to the inner side of the skirt.

1 : A packaging lid for mounting over an (access) opening of a packaging container, said container being adapted in particular for packaging a powdered or granular food product and comprising a bottom and a circumferential wall which has an upper rim remote from the bottom, said upper rim defining the opening of the container,
 wherein the lid comprises a top side that in a mounted state extends over the opening of the container and a skirt extending from the top side towards a lower end, wherein the skirt has on an inner side thereof resilient members adapted to cooperate with an outwardly projecting ridge on an outer side of the circumferential wall of the container so as to secure the lid to the container, and   wherein the resilient members are formed as resilient elongate strips having two ends attached to the inner side of the skirt and formed as an arch which, in an unloaded state, has a rise with respect to the inner side of the skirt.   
     
     
         2 : The packaging lid according to  claim 1 , wherein the strips extend in a substantial tangential direction of the inner side of the skirt. 
     
     
         3 : The packaging lid according to  claim 1 , wherein the strips have a lead-in edge to facilitate compression of the arch of the strip while moving the strip past said outwardly projecting ridge during mounting of the lid on the container. 
     
     
         4 : The packaging lid according to  claim 3 , wherein the lead-in edge has a slanting surface. 
     
     
         5 : The packaging lid according to  claim 3 , wherein the lead-in edge has a curved or pointed shape, wherein, seen in a radial direction of the lid, the lead-in edge at the ends of the strip is located closer to the lower end of the skirt than at a centre of the strip. 
     
     
         6 : The packaging lid according to  claim 1 , wherein the strips have a retaining edge opposite the lead-in edge to engage an underside of said outwardly projecting ridge to retain the lid on the container. 
     
     
         7 : The packaging lid according to  claim 6 , wherein the retaining edge is straight between the ends of the strip. 
     
     
         8 : The packaging lid according to  claim 1 , wherein the arch is formed as a pointed segmental arch which comprises two segments which extend from the respective strip ends towards a join where the two segments join under an obtuse angle with respect to each other. 
     
     
         9 : The packaging lid according to  claim 8 , wherein said segments are substantially linear. 
     
     
         10 : The packaging lid according to  claim 8 , wherein said segments are substantially curved. 
     
     
         11 : The packaging lid according to  claim 1 , wherein the arch has a continuous curve shape. 
     
     
         12 : The packaging lid according to  claim 1 , wherein the lid comprises an annular base including said skirt attachable to the container and defining an access opening, and wherein the lid furthermore comprises a cover that is hingedly connected to the annular base and which is moveable between an open position in which the access opening is free and a closed position in which the access opening is covered. 
     
     
         13 : The packaging lid according to  claim 1 , wherein the skirt comprises an upper skirt portion and a lower skirt portion, the upper skirt portion being integrally connected to the top side of the lid and the lower skirt portion containing the arch formed strips, wherein the lower skirt portion and upper skirt portion are connected by one or more frangible connections. 
     
     
         14 : The packaging lid according to  claim 1 , wherein the lid is made of plastics material. 
     
     
         15 : The packaging lid according to  claim 1 , wherein the lid is injection molded. 
     
     
         16 : The packaging lid according to  claim 15 , wherein the lid is formed by 2K injection molding, wherein the strips are formed of a different material than the skirt. 
     
     
         17 : A method for manufacturing a packaging lid, wherein the lid comprises a top side and a skirt extending from the top side, and wherein the skirt has on an inner side thereof resilient elongate strips having two ends attached to the inner side of the skirt and formed as an arch which, in an unloaded state, has a rise with respect to the inner side of the skirt,
 in which method an injection mold is provided defining a cavity to mold the packaging lid, said injection mold comprising two mold halves, movable core parts to define at least a part of the inner surface of the skirt and the upper edge of the strips, core parts to define the back side of the strips, and a movable ejector,   in which a melt of plastic resin is injected in the mold cavity defined by the mold halves and the core parts, and wherein   after the melt has been injected and sufficiently cured the movable core parts are moved inwards so as to release the strips, and   the ejector pushes the formed lid away from the mold half and beyond the movable core parts so as to release the formed packaging lid from the mold.