Abstract: A self-sealing balloon or bladder is fabricated of a flexible elastic material and defines a body to which a filler neck is secured. The filler neck is joined to the body to form a fill opening therebetween. The self-sealing structure is provided by bending the filler neck upon and against the surface of the balloon or bladder body. An attachment such as adhesive, tape or sonic welding is utilized to secure the filler neck against the inflatable body. The balloon or bladder may then be filled through the filler neck by the introduction of a flowable material such as a liquid, gas, or powder under pressure to fill and expand the body. Once the filling apparatus has been withdrawn, the elasticity and fill material within the body cooperate to maintain closure of the fill opening.

Abstract: A method and system for automatic filling are provided. The system includes a drive assembly and a source of bladders to be filled wherein the bladders are joined in serial arrangement to a feeding web. The web is configured to be moved through the system using the drive assembly. The system further includes a nozzle configured to receive a flow of filling fluid and direct the flow of fluid into each bladder in turn and a closure device positioned proximate the nozzle wherein the closure device is configured to secure each bladder when filled such that each bladder remains filled after discharge from the system. The system also includes a trigger assembly configured to activate the closure device at a predetermined level of filling of each bladder.

Abstract: A self-sealing balloon or bladder is fabricated of a flexible elastic material and defines a body to which a filler neck is secured. The filler neck is joined to the body to form a fill opening therebetween. The self-sealing structure is provided by bending the filler neck upon and against the surface of the balloon or bladder body. An attachment such as adhesive, tape or sonic welding is utilized to secure the filler neck against the inflatable body. The balloon or bladder may then be filled through the filler neck by the introduction of a flowable material such as a liquid, gas, or powder under pressure to fill and expand the body. Once the filling apparatus has been withdrawn, the elasticity and fill material within the body cooperate to maintain closure of the fill opening.