| 摘要 |
The furnace (10) has a cooling system (36) cooling first and second parts e.g. neck (14) and annular collar, and third and fourth parts e.g. tubular body (18) and bottom (20), of thermoplastic preforms (12). The system includes a cooling device (42) to cool the third and fourth parts by air. The cooling device includes a ventilation unit (52) to deliver the given flow of the cooling air, and varying units e.g. variator (58) and closing unit to selectively vary flow of the cooling air delivered by the ventilation unit along a heating path of the preforms to cool the third and fourth parts. Independent claims are also included for the following: (1) a method for controlling a cooling device (2) a method for thermal conditioning thermoplastic preforms. |
