Patent ID: 7381455

Claim:
A tube comprising a skirt and a distribution head, the skirt including a wall made of an ethylene-linear C 4 to 10 olefin copolymer or of a mixture of ethylene-linear C 4 to 10 olefin copolymers having a fluidity index measured according to the ISO 1133 standard of between 3 and 10 g/10 min inclusive, and a density between 0.880 g/cm 3 and 0.935 g/cm 3 inclusive, wherein the thickness of the wall of the skirt is constant in a radial sectional plane; the skirt having a wall thickness at mid-height between 0.30 and 1.00 mm inclusive, and a length between 40 and 200 mm inclusive, wherein the skirt and the distribution head are manufactured by injection in an injection mold, the mold having a cavity insert and an additional insert, said additional insert having a central part including a free upper end, the end resting centered on the cavity insert during the injection of the tube.