Slider for actuating profiled closing shapes with preferred fold lines

Abstract

A slider for actuating profiled closure tracks, especially for a bag, having a base and two flanks parallel to a median central longitudinal plane and configured for stressing the profiled closure tracks between a closed latch position and an open separated position. A longitudinal rib subdivides the internal space of the slider into two non parallel channels. A first axial end of the channels wherein the channels are convergent makes an input end of the channels, while a second axial end of the channels wherein the channels are divergent makes an output end of the channels.

1 . A slider for actuating profiled closure shapes or tracks (P 1 , P 2 ), especially for a closure assembly equipping a sachet or bag, comprising a base ( 10 ), two flanks ( 11 ,  12 ) parallel to a median central longitudinal plane (PM), and means ( 13 C, C 1 , C 2 ) adapted for stressing respectively said profiled closure shapes or tracks (P 1 , P 2 ), by moving towards or moving away according to the direction of displacement of the slider along profiled shapes or tracks (P 1 , P 2 ), for moving the profiled shapes (P 1 , P 2 ) between a closed latch position and an open separated position, and comprising a central longitudinal rib ( 13 C) which subdivides its internal space into two non parallel corridors or channels (C 1 , C 2 ), characterized in that a first axial end (C 11 , C 21 ) of the channels (C 1 , C 2 ) wherein the channels are convergent making input end of the channels while a second axial end (C 12 , C 22 ) of the channels (C 1 , C 2 ) wherein the channels are divergent making output end of the channels, the external edge (EC 11 , EC 21 ) of the input end (C 11 , C 21 ) of the channels is at a distance (l 2 ) of the median central longitudinal plane (PM) at least equal to the distance (l 1 ) separating the internal edge (IC 12 , IC 22 ) of the output end (C 12 , C 22 ) of the channels (C 1 , C 2 ) from the median central longitudinal plane (PM) and the wall of the base ( 10 ) in regard of the channels (C 1 , C 2 ) corresponds to the lower thickness of the slider. 
     
     
         2 . The slider of  claim 1 , wherein the external edge (EC 11 , EC 21 ) of the input end (C 11 , C 21 ) of the channels is at a distance (l 2 ) of the median central longitudinal plane (PM) slightly greater than the distance (l 1 ) separating the internal edge (IC 12 , IC 22 ) of the output and (C 12 , C 22 ) of the channels (C 1 , C 2 ) from the median central longitudinal plane (PM). 
     
     
         3 . The slider of  claim 1 , wherein said longitudinal rib ( 13 C) is extended by a wide part ( 140 ) which extends on either side of said longitudinal rib in the two channels (C 1 , C 2 ) for guiding facets of said profiled closure shapes. 
     
     
         4 . The slider as claimed in  claim 3 , wherein said wide part ( 140 ) extends on either side of said longitudinal rib ( 13 C) in a direction to align with projections ( 112 ,  122 ,  113 ,  123 ) on the two flanks ( 11 ,  12 ). 
     
     
         5 . The slider as claimed in  claim 1 , wherein along a longitudinal free edge of each flank ( 11 ,  12 ) extends a stiffening bar ( 110 ,  120 ), and wherein a thickness of each stiffening bar ( 110 ,  120 ) is greater than a thickness of its corresponding flank ( 11 ,  12 ). 
     
     
         6 . The slider as claimed in  claim 5 , wherein each stiffening bar ( 110 ,  120 ) has a same longitudinal range as its corresponding flank ( 11 ,  12 ). 
     
     
         7 . The slider as claimed in  claim 1 , wherein said slider comprises projecting load pins on said flanks, in the vicinity of the end of those flanks opposite said base, for opening it provisionally and enabling its engagement on said profiled shapes when stress is exerted on said pins. 
     
     
         8 . The slider as claimed in  claim 1 , wherein the input end of the channels (C 1 , C 2 ) corresponds to the free opening defined between the central rib ( 13 C) and a first set of respective projections ( 113 ,  123 ) provided on said flanks ( 11 ,  12 ), while the output end of the channels (C 1 , C 2 ) corresponds to the free opening defined between the central rib ( 13 C) and a second set of respective projections ( 112 ,  122 ) provided on said flanks ( 11 ,  12 ). 
     
     
         9 . The slider as claimed in  claim 8 , wherein the external edge (EC 11 , EC 21 ) of the input end of the channels (C 1  and C 2 ) corresponds to the face of the first set of projections ( 113 ,  123 ) directed towards the median plane (PM), while the internal edge (IC 12 , IC 22 ) of the output end of the channels (C 1  and C 2 ) corresponds to the face of the central rib ( 13 C) directed towards the second set of projections ( 112 ,  122 ). 
     
     
         10 . A bag comprising a slider as claimed in  claim 1 .