Patent attributes
A thermoplastic container (1) having a body (2) provided with at least one groove (6) that forms a closed loop and that extends perpendicularly to the axis of the body; the groove having a depth (p) that lies in the range 3 mm to 6 mm; in right section, the groove comprises: an bottom (8) that is rounded, having a small radius of curvature (R1) in the range 0.2 mm to 1.5 mm; two faces (9) that are plane and that flare apart from each other on either side of the bottom (8) at an angle (α) in the range 50° to 90°; and two faces (10) that are curvilinear, and that extend away from the respective plane faces (9) at an angle (β) that is less than 180°, and that are connected thereto by respective rounded walls (11) of small radius of curvature (R2) that does not exceed 1.5 mm, and that are connected tangentially to the wall (12) of the body (2). Such a groove (6) is deformable with a capacity to pinch axially in the presence of an axial force applied to the container.
