Method and device for sterilizing preforms
US8470240B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2007 |
| Grant date | Jun 25, 2013 |
| Priority date | — |
| Expiry date | May 22, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB67C2003/227
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The method includes at least the following steps of spraying a flow of sterilizing vapor, including a vaporized sterilizing product, towards the preforms to be sterilized, so as to cover at least an inner wall (15) of the preforms to be sterilized with the product; and heating, by radiation, the preforms covered with sterilizing product in order to bring them to a temperature (T2) at or above an activation temperature (Ta) for the product. The spraying of the flow of sterilizing vapor is carried out in a protective chamber (40), heating is carried out outside the protective chamber (40), and the flow of sterilizing vapor is in the form of a jet of vapor (F) vaporized onto the preforms (12), in such a way as to bring about the deposition, by condensation, of a substantially uniform film of condensate (48) of sterilizing product on at least the inner wall (15) of the preforms to be sterilized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.