Slider for sealable storage bag and sealable storage bag provided with the slider

Abstract

A slider for a sealable storage bag is provided that causes fastener members F which include at least one set of a convex strip portion F 1 and a concave strip portion F 2 disposed so as to oppose each other at inner surfaces of an opening B 1 of the sealable storage bag B to be fitted together by sliding the slider 1 along the opening B 1 from an outer side of the sealable storage bag B to thereby close the opening B 1 , the slider 1 comprising two opposing pieces 2 that are engaged with each other at a base end side and arranged with a predetermined interval therebetween at a leading end side, the opposing pieces 2 disposed at the opening B 1 so as to externally cover part of the opening B 1 ; at least one push protrusion 3 that pushes the fastener members F from the outer side of the sealable storage bag B to cause the convex strip portion F 1 and the concave strip portion F 2 to be fitted together so as to protrude from an inner surface 22 of at least one of the opposing pieces 2 ; and a tongue-shaped stopper 4 that protrudes from part of the opposing pieces 2 towards a space 2 a between the opposing pieces 2, 2 , with a leading end of the stopper 4 positioned further towards the base end side than the push protrusion 3 , the stopper 4 having a base portion 41 disposed at the opposing pieces 2 and an expanded portion 42 disposed at the leading end side of the base portion 41 , wherein a width dimension W 42 of the expanded portion 42 that is a dimension along a sliding direction S exceeds a width dimension W 41 of the base portion 41 , the width dimension W 42 being equal to or less than a width dimension W 2 of the opposing pieces 2 , and wherein a dimension W 3 between one end edge 3 a and the other end edge 3 b of the push protrusion 3 in the sliding direction S is equal to or less than the width dimension W 42 of the expanded portion 42.

1 . A slider for a sealable storage bag for causing fastener members (F) that include at least one set of a convex strip portion (F 1 ) and a concave strip portion (F 2 ) disposed so as to oppose each other at inner surfaces of an opening (B 1 ) of the sealable storage bag (B) to be fitted together by sliding the slider ( 1 ) along the opening (B 1 ) from an outer side of the sealable storage bag (B) to thereby close the opening (B 1 ), 
 the slider ( 1 ) comprising: 
 two opposing pieces ( 2 ) that are engaged with each other at a base end side and arranged with a predetermined interval therebetween at a leading end side, the opposing pieces ( 2 ) disposed at the opening (B 1 ) so as to externally cover part of the opening (B 1 );  
   at least one push protrusion ( 3 ) that pushes the fastener members (F) from the outer side of the sealable storage bag (B) to cause the convex strip portion (F 1 ) and the concave strip portion (F 2 ) to be fitted together so as to protrude from an inner surface ( 22 ) of at least one of the opposing pieces ( 2 ); and    a tongue-shaped stopper ( 4 ) that protrudes from part of the opposing pieces ( 2 ) towards a space ( 2   a ) between the opposing pieces ( 2 ,  2 ), with a leading end of the stopper ( 4 ) positioned further towards the base end side than the push protrusion ( 3 ), the stopper ( 4 ) having a base portion ( 41 ) disposed at the opposing pieces ( 2 ) and an expanded portion ( 42 ) disposed at the leading end side of the base portion ( 41 ), wherein    a width dimension (W 42 ) of the expanded portion ( 42 ) that is a dimension along a sliding direction (S) exceeds a width dimension (W 41 ) of the base portion ( 41 ), the width dimension (W 42 ) being equal to or less than a width dimension (W 2 ) of the opposing pieces ( 2 ), and wherein    a dimension (W 3 ) between one end edge ( 3   a ) and the other end edge ( 3   b ) of the push protrusion ( 3 ) in the sliding direction (S) is equal to or less than the width dimension (W 42 ) of the expanded portion ( 42 ).    
   
   
       2 . The slider for a sealable storage bag according to  claim 1 , wherein 
 positions of end edges ( 42   b ,  42   c ) of the expanded portion ( 42 ) in the sliding direction (S) are respectively present at 1 mm to 3 mm inward from positions of end edges ( 22   a ,  22   b ) of the opposing pieces ( 2 ).    
   
   
       3 . The slider for a sealable storage bag according to  claim 1 , wherein 
 at least one end edge ( 22   a ,  22   b ) of the opposing pieces in the sliding direction is provided with alignment-use notches ( 6 ) for positioning when a plurality of sliders ( 1 ) are superposed, and wherein    the expanded portion ( 42 ) is disposed offset from the alignment-use notches ( 6 ) in a direction orthogonal to the sliding direction (S).    
   
   
       4 . The slider for a sealable storage bag according to  claim 1 , further comprising: 
 guide-use protrusions ( 5 ) protruding from at least one inner surfaces ( 22 ) of the opposing pieces ( 2 ), the guide-use protrusions ( 5 ) disposed parallel to the sliding direction (S) further towards the leading end side than the push protrusion ( 3 ),    the guide-use protrusions ( 5 ) disposed at a predetermined distance from the leading end of the opposing pieces ( 2 ) towards the base end thereof, to thereby provide a space ( 2   b ) defined by the leading end portions of the opposing pieces ( 2 ) and the guide-use protrusions ( 5 ),    the guide-use protrusions including inclined surfaces ( 51 ) disposed at portions towards the inner side from both ends of the guide-use protrusions ( 5 ) in the sliding direction (S), the inclined surfaces ( 51 ) formed so that the height of the guide-use protrusions ( 5 ) gradually becomes higher from the both ends towards the inside; and    a space ( 2   c ) defined by both the inclined surfaces ( 51 ,  51 ) of both the guide-use protrusions ( 5 ,  5 ).    
   
   
       5 . A sealable storage bag formed by adhering together two resin sheets, comprising: 
 fastener members (F) disposed at inner surfaces of an opening (B 1 ) of the sealable storage bag (B), the fastener members (F) including at least one set of a convex strip portion (F 1 ) and a concave strip portion (F 2 ) that oppose each other, the opening (B 1 ) being closeable by fitting together the convex strip portion (F 1 ) and the concave strip portion (F 2 );    end seals (B 2 ) disposed at both end portions of the opening (B 1 ), the end seals formed by adhering the convex strip portion (F 1 ) and the concave strip portion (F 2 ) of the fastener members (F) together with the resin sheets; and    continual blocking portions (F 3 ) that block the circulation of air, disposed in predetermined ranges of the fastener members (F) nearest the end seals (B 2 ) with the convex strip portion (F 1 ) and the concave strip portion (F 2 ) remaining fitted together, wherein    for closure of the opening (B 1 ), the slider ( 1 ) of  claim 1  is attached to the opening (B 1 ) while the expanded portion ( 42 ) of the stopper ( 4 ) abuts against the end seal (B 2 ) at a more upper side than the fastener members (F) of the sealable storage bag (B), such that the push protrusion ( 3 ) disposed at the slider ( 1 ) and the continual blocking portion (F 3 ) of the sealable storage bag (B) abut against each other.    
   
   
       6 . The sealable storage bag according to  claim 5 , wherein 
 an end edge (B 1   a ) of one resin sheet and an end edge (B 1   b ) of the other resin sheet are disposed so as to be vertically offset at the opening (B 1 ).    
   
   
       7 . The slider for a sealable storage bag according to  claim 2 , wherein 
 at least one end edge ( 22   a ,  22   b ) of the opposing pieces in the sliding direction is provided with alignment-use notches ( 6 ) for positioning when a plurality of sliders ( 1 ) are superposed, and wherein    the expanded portion ( 42 ) is disposed offset from the alignment-use notches ( 6 ) in a direction orthogonal to the sliding direction (S).    
   
   
       8 . The slider for a sealable storage bag according to  claim 2 , further comprising: 
 guide-use protrusions ( 5 ) protruding from at least one inner surfaces ( 22 ) of the opposing pieces ( 2 ), the guide-use protrusions ( 5 ) disposed parallel to the sliding direction (S) further towards the leading end side than the push protrusion ( 3 ),    the guide-use protrusions ( 5 ) disposed at a predetermined distance from the leading end of the opposing pieces ( 2 ) towards the base end thereof, to thereby provide a space ( 2   b ) defined by the leading end portions of the opposing pieces ( 2 ) and the guide-use protrusions ( 5 ),    the guide-use protrusions including inclined surfaces ( 51 ) disposed at portions towards the inner side from both ends of the guide-use protrusions ( 5 ) in the sliding direction (S), the inclined surfaces ( 51 ) formed so that the height of the guide-use protrusions ( 5 ) gradually becomes higher from the both ends towards the inside; and    a space ( 2   c ) defined by both the inclined surfaces ( 51 ,  51 ) of both the guide-use protrusions ( 5 ,  5 ).    
   
   
       9 . The slider for a sealable storage bag according to  claim 3 , further comprising: 
 guide-use protrusions ( 5 ) protruding from at least one inner surfaces ( 22 ) of the opposing pieces ( 2 ), the guide-use protrusions ( 5 ) disposed parallel to the sliding direction (S) further towards the leading end side than the push protrusion ( 3 ),    the guide-use protrusions ( 5 ) disposed at a predetermined distance from the leading end of the opposing pieces ( 2 ) towards the base end thereof, to thereby provide a space ( 2   b ) defined by the leading end portions of the opposing pieces ( 2 ) and the guide-use protrusions ( 5 ),    the guide-use protrusions including inclined surfaces ( 51 ) disposed at portions towards the inner side from both ends of the guide-use protrusions ( 5 ) in the sliding direction (S), the inclined surfaces ( 51 ) formed so that the height of the guide-use protrusions ( 5 ) gradually becomes higher from the both ends towards the inside; and    a space ( 2   c ) defined by both the inclined surfaces ( 51 ,  51 ) of both the guide-use protrusions ( 5 ,  5 ).