CLOSURE FOR FLEXIBLE CONTAINER

摘要

A fastening device for securing the mating edges of a sheet of plastic material together to form a sealed container. The structure or device is constituted of three parts, two of which are secured to the respective edges of the material as strips, and take the form of "C" shaped elements of different sizes which can be fitted snugly one within the other. These members have flat extensions to which the edges of the plastic sheets are secured. The third member is constituted of a rod of rubber or similar stretchable material which when stretched longitudinally will temporarily reduce its diameter so that it can be pressed into the circular opening formed within the inner "C" shaped member. When the stretching force is removed, the rod will increase its diameter to press the inner member against the outer member and provide a sealed joint between the two members and the mating edges of the material to which they are attached.