Abstract: It is advantageous for a substance in the form of a liquid or a paste to be packaged under pressure and in the absence of any air inside a receptacle (1) which is hermetically closed by a valve (2) for the purpose of dispensing the substance. A convenient way of putting the substance under pressure therefore consists in using a resilient receptacle (1) which is prior deformed so that its walls (10) seek to return to their natural shape (in dashed lines) and exert a force on the substance. The present invention uses mechanical means for imparting said deformation. As a result, the receptacle (1) can be filled with substance at atmospheric pressure. The receptacle is constituted by a single envelope whose shape is of an appearance suitable for the market for this type of dispenser and is adapted to easy manipulation in the hand. Finally, if the dispenser is provided with a precompression pump type valve (2) up to 95% of the substance initially contained in the receptacle (1) can be dispensed.

Abstract: An apparatus for facilitating the filling of a spray device, the spray device being constituted by a receptacle and an extraction and projection pump mounted on the receptacle. The pump is of the precompression type and includes a valve member (8) having a pin (9) which is held pressed against a seat (7) by a spring (10) whose characteristics determine the degree of precompression. The seat is formed around the axis of the delivery piston (4) of the pump, and wherein breakable or deformable projections (15) are formed on the valve member suitable for holding the valve open so long as said projections are not destroyed or deformed.