METHOD FOR PRODUCING A VESSEL CLOSURE

摘要

The method for the production of fastener for container with an opening to be closed through the fastener, comprises arranging a polymer based ring or circular-disc shaped sealing element (3) in the container fastener so that it adjoins in a closing position sealed on the opening of the container in which a polymer material is obtained by heating and is applied in the area of the sealing element to be produced on the fastener and/or if necessary mechanically subjected into desired form that retains the polymer material after cooling. The method for the production of fastener for container with an opening to be closed through the fastener, comprises arranging a polymer based ring or circular-disc shaped sealing element (3) in the container fastener so that it adjoins in a closing position sealed on the opening of the container in which a polymer material is obtained by heating and is applied in the area of the sealing element to be produced on the fastener and/or if necessary mechanically subjected into desired form that retains the polymer material after cooling. The fastener corresponds to an interior diameter of the container opening of 4 cm. The sealing element is formed as insert on the interior area (2) of the container fastener. The interior diameter of the container is greater than 2 cm. The sealing element consists of a polymer or polymer compound, which is formed so that the sealing element is usable under pasteurization condition (up to 98[deg] C) or under sterilization condition (121-132[deg] C). The container fastener has a gas barrier effect and/or a pressure relief valve effect in the closing position, and a vacuum retention in the closing position. The polymer material is provided as granulates, heated by an extruder and applied by a nozzle on interior of the fastener. The applied polymer material is formed by a stamp. The container fastener is a cam twist closure (1). The sealing element is formed through stamping in a ready-formed closure sleeve before forming a wall area with a cam (4) and is formed subsequently to the wall area with the cam. The sealing element is formed in the closure sleeve through the stamping. The outer diameter of the stamp is not greater than the freely accessible area in the interior diameter of the sleeve. The sealing element has a lip that sealably cooperates with the mouth of the container to be closed.