Break-open pack and production method thereof

A method for the production of a sealed break-open pack (1) and comprising the steps of:

• feeding a rigid sheet (2) and a flexible sheet (3), which, once coupled, define a pocket (4) suited to house a product (5), wherein the rigid sheet (2) has a main part (13), on which the flexible sheet (3) is fixed in order to define the pocket (4), and a reinforcement part (14), which is connected to the main part (13) along a folding line (15);
• obtaining, in the rigid sheet (2), a pre-weakened area (6) to guide, following a “U”-shaped folding of the rigid sheet (2), a controlled breaking of the rigid sheet (2) in the pre-weakened area (6) so as to cause the formation of an output opening for the product (5) through the rigid sheet (2);
• placing the rigid sheet (2) and the flexible sheet (3) on top of one another and fixing them in order to define the pocket (4) open on one side;
• inserting the product (5) into the pocket (4);
• and
• sealing the pocket (4) after having inserted the product (5);
• wherein the step of obtaining, in the rigid sheet (2), a pre-weakened area (6) comprises the step of obtaining, through the rigid sheet (2), a non-through incision (7), which is “U”-shaped and partially surrounds the product (5) housed in the pocket (4), and wherein the reinforcement part (14) is folded by 180° against the main part on the opposite side of the pocket (4) and overlaps the main part (13) on the opposite side of the (4), and the reinforcement part (14) has a through opening (17) which is “U”-shaped and surrounds the incision (7).