| 摘要 |
PURPOSE: A method of sterilizing fibre-based containers and a method in connection with autoclaving a fibre-based container is provided which the cycle time of the sterilizing process is reduced. CONSTITUTION: Package materials exist which are exposed to environments requiring good sealing properties of the container against moisture and liquid. These materials can not completely withstand the negative effect of the water on the mechanical properties of the package material. Consequently, the containers are exposed to these non-favourable conditions as briefly as possible while maintaining the sterilization effect required. By the heat transfer medium used for heating and/or cooling of the container, respectively, being exchanged during the heating and/or cooling of the container at a critical temperature for the container when it is sterilized by means of heat treatment, preferably autoclaving. The sterilization is performed in an autoclave, the temperature of which is allowed to rise to the autoclaving temperature suitable for the application, which temperature is maintained during a sufficient holding time. Then the container is cooled with a medium not containing water, which medium preferably is air, down to the critical temperature, at which temperature the medium is exchanged for water.
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