Method and an apparatus for sterilizing a continuous packaging material web
US5424034A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 3, 1993 |
| Grant date | Jun 13, 1995 |
| Priority date | — |
| Expiry date | Sep 3, 2013 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF26B13/10
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The disclosure relates to a method and an apparatus for treating, for purposes of sterilization, a continuous material web (16) by bringing the entire web or parts thereof intended for sterilization into contact with liquefied hydrogen peroxide and thereafter drying the web with the aid of a hot gaseous fluid. In order to improve the degree of destruction of micro-organisms present on the material web, the material web is dried, after contact with the liquefied hydrogen peroxide, with air which has been intentionally supplied with hydrogen peroxide. The apparatus for carrying out the method displays an elongate space (15) fitted with inlet (13) and outlet (11) for the material web, through which space the material web is disposed to be led, and an outer flow duct (17) disposed in communication with the inlet and the outlet and provided with means (18) for supplying hot hydrogen peroxide-free air for mixing with a portion of the hydrogen peroxide-containing air after the drying operation, and recycling of the mixed, hydrogen peroxide-containing air through the elongate space (15) in the direction of movement of the material web for a new drying cycle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.