METHOD OF SOLDING COLLAR AND TANK BODIES OF A PLASTIC CONTAINER AND CONTAINER COMPRISING AT LEAST ONE RESERVOIR SOLD BY THIS PROCESS

摘要

The invention aims to obtain any form of containers of high quality and easy to manufacture in large quantities, used for example in cosmetics or pharmacy. To do this, the present invention proposes the embodiment of the container by a welding of thin-edged parts with thickness and having different angles of attack.A container according to the invention comprises contact walls (401, 402) of the neck ( 41) and / or body (42) to be welded partially thinned linearly in thickness. The contact walls (401, 402) of the elements (41, 42) to be assembled then have portions (Sa, Sa ') of the contact surfaces (Sc, Sc') inclined with respect to the main axis (X'X). ) to form between them an angular gap of at least substantially 3 to 5 degrees on a portion (Sa, Sa ') of these contact walls. The dimensions of the contact walls (401, 402) are such that the contact wall of an element (41, 42) is brought into contact. The thinned walls have a radially deformable structure during the progression of the wall. The welding operation carried out between the contact surfaces (Sc, Sc '), after stopping the progression when the contact surfaces are opposite, makes it possible to assemble the contact surfaces by melting the plastic material into local areas (Zc, Zc ') dug in these surfaces forming a melting space (E).