Patent ID: 7291811

Claim:
An oven for heating blanks on the run, especially preforms or intermediate containers, made of a thermoplastic, this oven comprising conveying means suitable for supporting and moving the blanks one after another while making each of them rotate about its own axis, and heating means placed laterally to the conveying means so as to heat the bodies of said moving blanks, wherein the conveying means are arranged so as to have at least two conveying branches lying substantially parallel to each and having opposite conveying directions, said two branches being traveled one after each other by the blanks, the heating means being placed between said two parallel conveying branches which extend near each other, wherein said heating means includes only one single line of heating infrared lamps, which extends between and substantially parallel to said two conveying branches, so that said infrared lamps heat, bilaterally and simultaneously, the blanks running in the opposite conveying directions along the two conveying branches respectively.