Device for the airtight closing of a package with fast open-and-shut system

摘要

A closing device, for airtight closing of a package by use of a removable lid, has a facing lid fixedly joined to the package and springs made of shape memory alloy resting on the lid and the facing lid. The facing lid may be fixedly joined to the package by brackets or by other fixing mechanisms. These fixing mechanisms may include screws or may include a groove and tongue arrangement. The fixing mechanism may also include a ring made of a shape memory alloy forcing a flexible part of the facing plate against the package.