A break-open single-dose sealed package ; the sealed package comprising: a first sheet of semi-rigid plastic material; a second sheet of flexible plastic material set on top of and welded to the first sheet along an annular weld , so as to define a sealed pocket which contains a dose of a product ; and a pre-weakened area , which is obtained in a central area of the first sheet , so as to guide, following a folding of the sealed package , a controlled breaking of the first sheet in the pre-weakened area , in order to cause the formation of an outlet opening for the product through the first sheet ; wherein the pocket , due to a central weld connecting the second sheet to the first sheet , is divided into two distinct and separate chambers , which are insulated from one another and each contain a corresponding component of the product ; the single-dose sealed package is characterized in that: the annular weld that defines the pocket has a greater mechanical resistance than the central weld separating the two chambers ; and the central weld dividing the pocket into the two chambers is weak, so as to be broken, without breaking the annular weld as well, by exerting a pressure on at least one of the two chambers , so as to be able to mix the two components of the product one with the other before folding the sealed package and therefore before determining a controlled breaking of the first sheet in the pre-weakened area . a first sheet of semi-rigid plastic material; a second sheet of flexible plastic material set on top of and welded to the first sheet along an annular weld , so as to define a sealed pocket which contains a dose of a product ; and a pre-weakened area , which is obtained in a central area of the first sheet , so as to guide, following a folding of the sealed package , a controlled breaking of the first sheet in the pre-weakened area , in order to cause the formation of an outlet opening for the product through the first sheet ; wherein the pocket , due to a central weld connecting the second sheet to the first sheet , is divided into two distinct and separate chambers , which are insulated from one another and each contain a corresponding component of the product ; the single-dose sealed package is characterized in that: the annular weld that defines the pocket has a greater mechanical resistance than the central weld separating the two chambers ; and the central weld dividing the pocket into the two chambers is weak, so as to be broken, without breaking the annular weld as well, by exerting a pressure on at least one of the two chambers , so as to be able to mix the two components of the product one with the other before folding the sealed package and therefore before determining a controlled breaking of the first sheet in the pre-weakened area . the annular weld that defines the pocket has a greater mechanical resistance than the central weld separating the two chambers ; and the central weld dividing the pocket into the two chambers is weak, so as to be broken, without breaking the annular weld as well, by exerting a pressure on at least one of the two chambers , so as to be able to mix the two components of the product one with the other before folding the sealed package and therefore before determining a controlled breaking of the first sheet in the pre-weakened area . <EOS>