Thick liquid paste container comprises tube containing flexible wrapping containing liquid, and non-return valve through which air enters on release of pressure on tube

摘要

The paste container comprises a tube (1) in which a flexible wrapping (2) containing the liquid is fixed. When a user releases the pressure which he exerts on the tube air enters the space between the tube and casing through a non-return valve (3). The air compensates for the liquid which has left and the tube thus regains its initial shape at each relaxation of pressure and can be completely emptied as the wrapping advances into the neck (4).