Dispenser for liquid or pasty materials

A method of packaging a substance in liquid or paste form in a dispenser, the method comprising the steps of:

• filling a cylinder (1) with a substance (P);
• assembling a closure and substance-taking system by fixing an endpiece (2) on a piston (3) to constitute an assembly, inserting the assembly into a jacket (10) until a flange (22) of the endpiece (2) comes into inside abutment against a shoulder (11) of the jacket (10) and covering the endpiece (2) with a cap (6);
• and
• after filling the cylinder (1) and assembling the closure and substance-taking system, assembling the closure and substance-taking system on the cylinder (1) by making the jacket (10) slide in contact with an inside wall of the cylinder (1) with radial clamping.

A dispenser of substance in liquid oar paste form, the dispenser being of the type comprising, in particular, a cylinder (1) of substance surmounted firstly by an endpiece (2) provided with an internal evacuation duct (2a) and fitted, secondly with substance-taking means comprising:

• a piston (3) received in the cylinder (1) and having an axial duct (30) passing therethrough and connected to an outlet tube (4)whose top end (4b) is secured to said endpiece (2) forming a pushbutton which bears on the outside face (3a) of the piston (3) to put the cylinder (1) under pressure;
• an admission orifice (40) defined by the bottom end (4a) of the outlet tube (4);
• and
• a removable exhaust valve, the dispenser being characterized in that the cylinder (1) is provided with an internal lateral jacket (10) and in that the top edge of the jacket (10) is provided with a shoulder (11) under which a peripheral flange (22) formed on the bottom side edge of the endpiece (2) is engaged.