Patent ID: 8303290

Claim:
An installation for producing containers from thermoplastic parisons, each having at least a neck and a body, the installation comprising: a heating unit for heating the parisons in a neck-up orientation by radiating a perimeter of the body of the parison to form the containers from the parisons thus heated; a transport path in the installation which the parisons are intended to follow within the heating unit; at least one source of coherent electromagnetic radiation as part of said heating unit directed toward a region situated on the path of the parisons; and an opaque screen positioned facing the source of coherent electromagnetic radiation, wherein the path of the parisons is substantially linear, said plurality of sources of radiation is directed transversely with respect to said path, the heating unit comprises: several superposed rows of adjacent sources arranged parallel to the path, a chamber comprising a first wall and a second wall facing one another and substantially parallel to the path of the parisons, these walls being positioned one on each side of this path and together delimiting an internal volume, the first wall being equipped with a plurality of superposed parallel slits facing each of which there is positioned, on the opposite side to the internal volume, a row of radiation sources, and a ventilation system able to generate an air flow passing through a region situated vertically in line with said chamber.