Stand-up package of flexible material, particularly for granular or powdery products

Abstract

A package ( 1 ) of the stand-up type is described, of flexible material, to contain granular or powdery products, comprising a supporting base ( 2 ) from which two opposite side walls ( 3 ) are erected, joined to the perimeter of said base ( 2 ) and joined to each other along the side edges up to a certain height, so as to leave free upper areas ( 7 ) of the side walls, coinciding with which a perforated sheet ( 9 ) fixed permanently along its edge ( 5′, 20 ) on the inside of said side walls of the package is applied, and closed peelably on itself along its edge ( 5″, 20 ′) when said upper areas ( 7 ) of the side walls are brought together, so as to leave free top flaps ( 12 ) which are pulled to bring about the opening of said peelable closure ( 5″, 20 ′) and thus the exposure of said perforated sheet ( 9 ), through which the product contained in the package ( 1 ) can be dispensed.

1 . A package ( 1 ) of the stand-up type, of flexible material, to contain granular or powdery products, comprises a supporting base ( 2 ) wherefrom two opposite facing side walls ( 3 ) are erected, each seated to a respective half-perimeter of the base ( 2 ) and sealed to each other along the side edges ( 5 ), characterised in that said side seals ( 5 ) do not extend for the entire height of the package ( 1 ) so as to leave free upper areas ( 7 ) of the side walls inside which is applied a perforated sheet ( 9 ) permanently sealed along its edge ( 5 ′,  20 ) to said walls of the package and peelably sealed to itself along its edge ( 5 ″,  20 ′) when said upper areas ( 7 ) of the walls are brought together, leaving free respective top flaps of wall ( 12 ), the whole so that on exerting a traction on said flaps ( 12 ) said peelable seals ( 5 ″,  2 ′″) are caused to separate, exposing said perforated sheet ( 9 ) though which the granular or powdery product contained in the package ( 1 ) can be dispensed. 
   
   
       2 . A package according to  claim 1 , characterised in that said perforated sheet ( 9 ) is substantially rectangular in shape, said permanent seal ( 5 ′) and said peelable seal ( 5 ″) constituting an extension of said seals of the side edges ( 5 ) of the package, whereas said permanent seal ( 20 ) and said peelable seal ( 20 ′) close the package at the top. 
   
   
       3 . A package according to  claim 1 , characterised in that said free top flaps ( 12 ) of the side walls ( 3 ) of the package ( 1 ) have at the centre respective protruding tongues ( 13 ) with a convex profile, adapted to facilitate the gripping during the opening of the package. 
   
   
       4 . A package according to  claim 1 , characterized in that a cut ( 14 ) is provided on one of the free top flaps ( 12 ), whilst a tongue ( 15 ) is provided on the other flap ( 12 ), designed to be inserted in said cut ( 14 ) during the re-closure step of the package ( 1 ) to keep said flaps ( 12 ) together. 
   
   
       5 . A package according to  claim 1 , characterised in that a transverse band ( 30 ), into which the top flaps ( 12 ) are inserted during the re-closure step of the package, is provided on one of said side walls ( 3 ). 
   
   
       6 . A package according to  claim 1 , characterised in that respective recesses ( 8 ) adapted to facilitate the gripping of the package by the user are provided on said side edges ( 5 ) at a short distance from said base ( 2 ) of the package. 
   
   
       7 . A package according to  claim 1 , characterised in that said perforated sheet ( 9 ) has a plurality of holes or microholes ( 10 ) sized according to the product to be delivered, contained in the package ( 1 ). 
   
   
       8 . A package according to  claim 1 , characterised in that said perforated sheet ( 9 ) is a multi-ply sheet, so as to have one side of a material compatible with that of the inner surface of the package ( 1 ) to be able to be permanently sealed thereto, and the other side of a peelably heat-sealable material. 
   
   
       9 . A package according to  claim 1  in which said peelable seal ( 5 ″,  20 ′) is obtained by using fugitive glues or lacquers.