Method for producing a vanity unit assembly and vanity unit assembly obtained by this method

Method for producing a vanity unit assembly (19), in which:

• a cutout (4) is made in a receiving surface (1) comprising a thick layer of a support material (2) covered on at least one face with a thin layer of laminated material, called the laminated layer (3), said cutout being made in the support material according to a contour of a basin and leaving a border (6) of the laminated layer overhanging toward the inside of the cutout,
• an injection mold is used, comprising two parts of complementary shape, a first part, called the concave shell (14), comprising at least one recessed part suitable for forming a convex outer surface of the basin and a second part, called the convex shell (13) suitable for forming a concave inner surface of the basin, said mold being adapted to receive and clamp the receiving surface (1) between the two shells, the laminated layer (3) of the receiving surface facing the convex shell (13),
• wherein:
• a preform (10) of the basin is made from a thin sheet of thermoplastic synthetic material(s), called the decorative film (9), the preform comprising a planar rim (11) along its contour, toward the outside of the preform, said rim having a width smaller than the width of the border (6) of the laminated layer,
• the preform (10) and the receiving surface are installed in the mold in the following order:
• concave shell (14), preform (10), receiving surface (1), convex shell (13), so that the preform is inserted into the cutout (4) formed in the support material and that the planar rim (11) of the preform comes into contact with the border (6) of the laminated layer,
• the mold is closed and a second thermoplastic synthetic material, called the injected material (15), is injected between the concave shell and the preform.