METHOD AND APPARATUS FOR STERILIZING PLASTIC CONTAINER

摘要

The present invention is a method and an apparatus for performing heating and sterilizing treatment on the inside of a PET bottle 20 with a low heat resistance securely and without thermal deformation thereof, where a steam jetting nozzle 42 is inserted into the bottle 20 from a mouth portion 21 thereof to jet steam from the nozzle, the steam is circulated inside the bottle 20 to be exhausted from the mouth portion 21, the steam is caused to contact with a bottle inner face securely, and simultaneously cooling water is sprayed on an outer face of the bottle so that thermal deformation of the bottle wall face is prevented. <IMAGE>