Knurled pull-tabs

Abstract

A closure package includes a closure cap and a liner having a pull-tab. The liner is configured for use with a container having a finish or lip portion having a sealing surface at an uppermost portion thereof. The closure cap has a top wall portion and a depending skirt portion depending from the top wall portion. The top wall portion and sealing liner is adapted to coact with the container sealing surface to form a seal therebetween. The liner of the subject invention is for use with a closure package and is disposed in cap, positioned intermediate the top wall portion and the container sealing surface when the cap is positioned on the container. The liner is circular and has a central portion and a tab portion integral with the central portion, extending outwardly from a periphery thereof. The tab is folded on or above a tangent to the periphery of the liner, over the central portion into a folded position, and defines a hinge region at the juncture of the tab and outside the tangential line to the liner circumference. The tab is knurled to provide an improved, secure grip.

1 . A liner for use with a cap and container assembly,
 said liner comprising:
 a central disc portion having a circumference; 
 a pull-tab integral with said central disc portion and on a periphery of said central disc portion; 
 said pull-tab having a hinge area; 
 said pull-tab being capable of being folded on said hinge area to lay flat over said central disc portion, whereby in use in the cap said folded pull-tab biases said central disc portion against a wall of said cap; and 
 said pull-tabs being knurled on at least one side thereof, thereby, allowing a secure grip on said tab when unfolded. 
   
     
     
         2 . The liner of  claim 1  wherein the pull-tab is knurled on both sides. 
     
     
         3 . The liner of  claim 1  wherein the pull-tab is knurled in the shape of diamonds. 
     
     
         4 . The liner of  claim 1  wherein the pull-tab is knurled in the shape of squares. 
     
     
         5 . The liner of  claim 1  wherein the pull-tab is knurled in the shape of concentric circles. 
     
     
         6 . The liner of  claim 1  wherein the pull-tab is knurled in the shape of crosshatching. 
     
     
         7 . The liner of  claim 1  wherein the pull-tab is knurled in the shape of raised dots. 
     
     
         8 . A liner having a pull-tab for use with a cap and container assembly,
 said liner comprising:
 a central disc portion having a circumference; 
 a pull-tab integral with said central disc portion, having a hinge area parallel to a tangential line to said circumference and touching or radially beyond the circumference, 
 whereby said pull-tab is folded along said hinge area to be substantially flat against the central disc portion and be capable of maintaining the liner within the cap when inserted therein, said pull-tab having a knurled area, said knurled area comprising indentations in said pull-tab. 
   
     
     
         9 . The liner of  claim 8  wherein the pull-tab is knurled on both sides. 
     
     
         10 . The liner of  claim 8  wherein the pull-tab is knurled in the shape of diamonds. 
     
     
         11 . The liner of  claim 8  wherein the pull-tab is knurled in the shape of squares. 
     
     
         12 . The liner of  claim 8  wherein the pull-tab is knurled in the shape of concentric circles. 
     
     
         13 . The liner of  claim 8  wherein the pull-tab is knurled in the shape of crosshatching. 
     
     
         14 . The liner of  claim 8  wherein the pull-tab is knurled in the shape of raised dots. 
     
     
         15 . A pull-tab for a closure liner for use with a cap and container assembly,
 said pull-tabs being integral with a foil and polyolefin composite liner and having a plurality of upraised indentations on a face thereof integral with said pull-tab,   said upraised indentations providing for a better grip by a user on the tab.   
     
     
         16 . The liner of  claim 15  wherein the pull-tab is knurled on both sides. 
     
     
         17 . The liner of  claim 15  wherein the pull-tab is knurled in the shape of diamonds. 
     
     
         18 . The liner of  claim 15  wherein the pull-tab is knurled in the shape of squares. 
     
     
         19 . The liner of  claim 15  wherein the pull-tab is knurled in the shape of concentric circles. 
     
     
         20 . The liner of  claim 15  wherein the pull-tab is knurled in the shape of crosshatching. 
     
     
         21 . The liner of  claim 15  wherein the pull-tab is knurled in the shape of raised dots.