STRUCTURE OF FLUID CONTAINER AND METHOD AND APPARATUS FOR PRODUCING THE FLUID CONTAINER

摘要

A structure of check-valves [32a, 32b] for bonding to a fluid container [30] and a production apparatus of fluid container [30] which is capable of reliably keeping the expansion of the fluid container without any fluid leakage after inflating the fluid container. As the check-valve is bonded to only one of thermoplastic container films [31a, 31b], both films of the check-valve are fixed to one of the container films, thereby preventing the reverse flow by tightly closing the check valve. As a result, the expansion of the fluid container is reliably maintained after the fluid container is inflated. The manufacturing apparatus [70] includes an up-down roller controller [74] which precisely positions the film to form the check valve. As a result, the manufacturing apparatus can produce the fluid container having the reliable check valves.