Closure device for closing food receptacle has a section between film and receptacle with opposing walls defining cavity communicating with inside and outside

摘要

The closure device consists of the elastic traction film (1) the closing the receptacle with a section which can be positioned between the film and the receptacle. This section is joined to the film. In the position between the film and the receptacle, there is at least one pair of opposing walls, defining a hollow space (3) between them, communicating with the inside of the receptacle, and with the surrounding area.