| 摘要 |
#CMT# #/CMT# The method involves preheating a preform (12) by a heating unit (32) e.g. infrared lamp, till a set point temperature (TC1). The preform is exposed to UV emitted by a sterilizing unit (76) during a determined time lag. The preform is heated by another heating unit (34) till another set point temperature so as to sterilize an external surface (28) of a tubular body (14) of the preform till determined decontamination degree. The sterilizing unit is formed of UV lamp (78) and reflectors (80). #CMT# : #/CMT# Independent claims are also included for the following: (1) an installation for fabricating sterile containers (2) a furnace for thermal conditioning of a preform. #CMT#USE : #/CMT# Method for sterilizing a thermoplastic preform for fabricating a container e.g. bottle or vial, in a sterile container fabrication installation by blowing or stretch blowing of the preform conditioned by a thermal conditioning furnace (claimed). #CMT#ADVANTAGE : #/CMT# The method permits sterilization of the preform in a simple, reliable and economic manner. The preform is heated till the set point temperature so as to sterilize the external surface of the body of the preform till determined decontamination degree, thus eliminating germs, bacteria or spore on the external surface of the preform. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a schematic top view of a thermal conditioning furnace. 10 : Thermal conditioning furnace 12 : Preform 14 : Tubular body 28 : External surface 32, 34 : Heating units 76 : Sterilizing unit 78 : UV lamp 80 : Reflectors. |
