Patent ID: 7798800

Claim:
A device for heating at least one preform intended for the manufacture of a container made of a thermoplastic by blow molding or stretch-blow molding, said heating device comprising two lateral walls facing each other a certain distance apart, between which a preform is placed, one of said lateral walls supporting several radiation sources placed one above another so as to face the body of the preform, at least one transverse plate being placed beyond the closed end of the preform and near the latter and extending at least partly between the two said lateral walls, the lower face of this transverse plate that lies facing the closed end of the preform being reflective for the radiation emitted by said sources, and being inclined, wherein said plate is supported by said wall of the lateral walls that supports said radiation sources, wherein said lower face of said plate is inclined at an angle such that the radiation is reflected toward the preform and toward said lateral wall opposite said lateral wall supporting the radiation sources, and wherein said transverse plate is positioned with fastening means identical to the fastening means for fastening each radiation source in a respective support member, so that said transverse plate can be fitted instead of a radiation source in the support therefore.