Recloseable fasteners

Abstract

A recloseable fastener ( 10 ) or zipper of plastics material comprises first and second members ( 12, 20 ) which are profiled ( 18, 24 ) to create a closure by their interengagement. One of the closure members ( 12 ) is provided with an upstanding leg ( 30 ) which projects proud of the closure ( 18, 24 ) when closed. This leg ( 30 ) is positioned close to the closure so that it deflects upon closing of the closure, to enable the consumer to feel that the zipper is closing and then is closed.

1 . A recloseable fastener of plastics material comprising first and second closure members which are profiled to create a closure by their interengagement, wherein one of the closure members is provided with an upstanding leg which projects proud of the closure when closed.  
     
     
         2 . A fastener as claimed in  claim 1 , in which the upstanding leg is positioned adjacent to the closure.  
     
     
         3 . A fastener as claimed in  claim 1 , in which the upstanding leg is provided on a flange of one of the closure members.  
     
     
         4 . A fastener as claimed in  claim 1 , in which the interengageable closure is bounded on each side by an upstanding leg, the leg on one side of the closure bridging the gap between respective flanges of the closure members and the leg on the other side of the closure member being the leg projecting proud of the closure.  
     
     
         5 . A fastener as claimed in  claim 1 , in which the projecting leg protrudes by of the order of 0.5 mm beyond the closure.  
     
     
         6 . A fastener as claimed in  claim 1 , in which the two closure members provide three flanges.  
     
     
         7 . A fastener as claimed in  claim 6 , in which one closure member has a single flange extending from the closure and the other closure member has two flanges extending in opposite directions from the closure, the one of said two flanges which extends in the direction away from the single flange on the other closure member carrying the upstanding leg which projects proud of the closure.  
     
     
         8 . A fastener as claimed in  claim 7 , in which the two flanges which extend in the direction away from the flange which carries the protruding leg are provided with gripping beads on their facing internal surfaces.  
     
     
         9 . A fastener as claimed in  claim 1 , in which the first and second closure members are respectively provided with male and female profiles which are engageable to form the closure.  
     
     
         10 . A fastener as claimed in  claim 1 , in which the first and second closure members are provided with a double-track engageable closure.  
     
     
         11 . A fastener as claimed in  claim 7 , in which the single flange is longer than the similarly directed flange of the other closure member.  
     
     
         12 . A bag or container of plastics material provided with a recloseable fastener as claimed in  claim 1 .  
     
     
         13 . A bag or container of plastics material provided with a recloseable fastener as claimed in  claim 7 , in which the flange carrying the upstanding leg which projects proud of the closure is secured to that part of the bag which is on the inside of the closure.