PRODUCTION METHOD OF HERMETICALLY SEALED CONTAINER FOR DRINK OR FOOD

摘要

A production method of a hermetically sealed container in which the process speed of a hermetically sealing process can be increased when a container for drink or food is sealed hermetically using a laser welding method, without requiring strict control of a laser spot scanning position, causing partial excessive supply of energy easily and decreasing welding area or welding strength per area due to collection of water drops. The production method of a hermetically sealed container for drink or food in which the container body and a lid fitted to the mouth portion thereof are welded by laser welding method and hermetically sealed state is brought about, characterized in that the method comprises a step for welding the entire scheduled welding part of the container body and the lid simultaneously or substantially simultaneously.