Opening device for a package and package therewith

Abstract

An opening device includes a collar and a cutter at least partially arranged within a flow channel delimited by the collar. The opening device further comprises a retaining device configured to block movement of the cutter out of the flow channel and through a pouring outlet of the collar. The opening device, also comprises a flange protruding from the cutter.

1 . An opening device for a package having a designated pour opening covered with a separation membrane and filled with a pourable product;
 the opening device comprises at least:
 a collar delimiting a flow channel extending between an inlet opening of the collar configured to allow for an inflow of the pourable product into the flow channel and a pouring outlet of the collar configured to allow for an outflow of the pourable product from the flow channel; and 
 a cutter configured to break the separation membrane and being at least partially arranged within the flow channel; 
   wherein the collar comprises an inner surface facing the flow channel;   wherein the opening device further comprises a retaining device configured to block movement of the cutter out of the flow channel and through the pouring outlet;   wherein the retaining device comprises a retaining group protruding from the inner surface of the collar and an interaction group connected to the cutter;   wherein the retaining group and the interaction group are configured to interact with one another so as to block movement of the cutter out of the flow channel and through the pouring outlet;   wherein the opening device also comprises a flange protruding from the cutter.   
     
     
         2 . The opening device according to  claim 1 , wherein the flange comprises at least two flange elements angularly displaced from one another about a first central axis of the cutter and protruding towards the collar. 
     
     
         3 . The opening device according to  claim 2 , wherein the retaining group comprises at least two retaining elements being angularly displaced from one another about a second central axis of the collar. 
     
     
         4 . The opening device according to  claim 3 , wherein each flange element extends between a respective first angular position and a respective second angular position;
 wherein each retaining element extends between a respective third angular position and a respective fourth angular position;   wherein a respective first angular extension of each flange element between the respective first angular position and the respective second angular position is larger than a respective second angular extension of each retaining element between the respective third angular position and the respective fourth angular position.   
     
     
         5 . The opening device according to  claim 3 , wherein each flange element extends between a respective first angular position and a respective second angular position;
 wherein each retaining element extends between a respective third angular position and a respective fourth angular position;   wherein an angular distance between two flange elements is larger than an angular extension of the retaining elements.   
     
     
         6 . The opening device according to  claim 3 , wherein the number of the retaining elements and the number of the flange elements equal one another. 
     
     
         7 . The opening device according to  claim 3 , wherein each flange element radially protrudes from the cutter. 
     
     
         8 . The opening device according to  claim 3 , wherein each flange element is arc-shaped and/or the retaining group comprises at least two arc-shaped retaining elements being angularly displaced from one another about the second central axis of the collar. 
     
     
         9 . The opening device according to  claim 1 , wherein the cutter comprises a cutting section configured to break the separation membrane and being arranged at a first end portion of the cutter;
 wherein the flange protrudes from a second end portion of the cutter opposed to the first end portion of the cutter.   
     
     
         10 . The opening device according to  claim 1 , wherein the retaining group comprises an abutment surface and the interaction group comprises an engagement surface;
 wherein the engagement surface is configured to abut against the abutment surface so as to block the movement of the cutter out of the flow channel and through the pouring outlet.   
     
     
         11 . The opening device according to  claim 1 , wherein the retaining group is integrally connected to the collar and/or the flange is integrally connected to the cutter. 
     
     
         12 . The opening device according to  claim 1 , wherein the retaining group may be formed by at least one hollow protuberance or as at least one solid protuberance. 
     
     
         13 . The opening device according to  claim 1 , wherein the cutter is arrangeable in a rest position in which the cutter is detached from the separation membrane and an active position in which the cutter is configured to break the separation membrane;
 wherein the opening device also comprises an actuation device configured to actuate movement of the cutter from the rest position to the active position.   
     
     
         14 . The opening device according to  claim 1 , and further comprising:
 a base frame configured to be fitted and/or being fitted on the main body and about the designated pour opening and carrying collar; and   a closure configured to selectively open and close the pouring outlet.   
     
     
         15 . A package comprising:
 a main body filled with a pourable product and having a designated pour opening covered with a separation membrane; and   an opening device according to  claim 1  fitted about the designated pour opening.