Patent ID: 7770762

Claim:
A deformable flexible pouch for liquid or pasty fluid products comprising: a rigid upper part ( 3 ) comprising an orifice neck ( 5 ) and a flexible and deformable lower part ( 4 ) and the two parts ( 3 , 4 ) being articulated on one another such that the top of the inner wall of the lower part ( 4 ) is laid against the inner wall of the upper part ( 3 ) during the shrinkage of the pouch ( 2 ), wherein the flexible lower part ( 4 ) of the pouch has only one contraction ( 7 ) forming a concertina having a form such that it is folded back onto the inner wall of the rigid upper part ( 3 ) when it shrinks, said contraction ( 7 ) being formed in the upper part of the flexible pouch ( 2 ).