| CPC B67B 7/26 (2013.01) [B08B 9/023 (2013.01); B08B 9/0321 (2013.01); B26F 1/32 (2013.01); B65D 25/48 (2013.01); B65D 81/2023 (2013.01); B08B 2209/032 (2013.01)] | 7 Claims |
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1. A vacuum sealed package containing a granular material in a vacuum, comprising on an outer surface of a flexible wall thereof an aseptic or sterile adhesive, isolated from external contamination by a peelable sheet intended to be removed before piercing by a pouring device the pouring device suitable for piercing and emptying a granular material contained in a vacuum-sealed package, the pouring device comprising:
a tubular body, having a duct for the flow of the material, extending from an inlet opening positioned at a first end of the tubular body to an outlet opening for the granular material, positioned at a second end of the tubular body;
a hollow piercing tool having a distal end ending in a pointed tip and a widened base at the proximal end thereof, rigidly connected to the tubular body at the first end of the tubular body, the piercing tool having at least one lateral opening along the length of the piercing tool, said lateral opening extending along the length of the piercing tool from the widened base of the piercing tool, said lateral opening being configured to allow the material to be poured from the outside to the inside of the hollow portion of the piercing tool, the hollow portion of the widened base of the piercing tool being in communication with the inlet opening of the tubular body; and
a shoulder serving as a peripheral stop, formed by the first end of the tubular body arranged around the widened base of the piercing tool, said shoulder serving as a stop being configured to come into contact with the wall of the package directly or indirectly to stop the pouring device when said wall is pierced by the piercing tool in a position in which said lateral opening extends to the inside of the package,
wherein said pouring device is configured to ensure the continuous emptying of the contents of the vacuum-sealed package when the pouring device is oriented vertically, the pointed tip pointing upward, the granular material flowing by gravity through said lateral opening via the inlet opening and to the outlet opening by gravity in the opposite direction of an air entering the package and the adhesive is configured to bond to the shoulder of the pouring device when the piercing tool pierces the package wall,
wherein the adhesive is a double-sided adhesive having a first adhesive side bonded to the package flexible wall and a second adhesive side covered by the peelable sheet, configured to bond to the bonding surface of said shoulder of the pouring device when the piercing tool pierces the package wall,
wherein the double-sided adhesive has a thickness separating the first adhesive side and the second adhesive side of between 0.5 mm and 2 mm, the double-sided adhesive being flexible in the thickness thereof, configured to compensate for the unevenness of the package wall in contact with the first side of the adhesive including folds in the flexible wall, and
wherein a bonding strength of the double-sided adhesive is at least equal to or greater a force exerted on the package by gravity and therefore the weight of the package containing the granular material.
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