Patent ID: 8276775

Claim:
Container made of a thermoplastic, comprising a body oriented along a longitudinal axis with a wall enclosing said axis and defining at least two faces separated from each other by at least two connecting regions, said body being provided with at least one groove extending partly over said at least two faces of said body and at least one of the two connecting regions, said at least one groove extending approximately in a plane at right angles to said axis of said body through a predefined angular interval, and the depth of said groove being variable between a first depth P 1 in said two faces of the body and a second depth P 2 in said connecting region, the ratio P 1 /P 2 between the two depths being between zero and a maximum value, said maximum value being less than or equal to 0.5, wherein said groove has a depth P 2 that varies at an approximately constant rate of growth between zero in the faces of the body and a maximum value in the connecting region.