Patent ID: 8225932

Claim:
A break-open single-dose sealed package ( 1 ), comprising: a first sheet ( 2 ) of semi-rigid plastic material, which is constituted by a laminate made up of a load-bearing layer ( 7 ), a heat-sealable layer ( 8 ), and an isolating or barrier layer ( 9 ) set between the load-bearing layer ( 7 ) and the heat-sealable layer ( 8 ); a second sheet ( 3 ) of flexible plastic material set on top of and welded to the first sheet ( 2 ) of semi-rigid plastic material for defining a sealed pocket ( 4 ) that contains a dose of a product ( 5 ); and an incision ( 6 ) provided in the first sheet ( 2 ) of semi-rigid plastic material for guiding controlled breaking of the first sheet ( 2 ) along the incision ( 6 ) so as to bring about formation through the first sheet ( 2 ) of an opening for exit of the product ( 5 ); wherein the incision ( 6 ) is provided on both sides of the first sheet ( 2 ) of semi-rigid plastic material and constitutes a first groove ( 6 a ) made in an outer wall ( 10 ) of the first sheet ( 2 ) of semi-rigid plastic material and a second groove ( 6 b ) made in a second inner wall ( 11 ) of the first sheet ( 2 ) of semi-rigid plastic material; and wherein the second groove ( 6 b ) is made so as to bring about local deformation of all three layers ( 7 , 8 , 9 ) of the first sheet ( 2 ) of semi-rigid plastic material to maintain the barrier layer intact.