Abstract: A structural and/or decorative display is made by connecting inflatable balloon chambers into a network. The network of inflatable chambers may be generated as a balloon system comprised of at least two essentially identical balloonlets each of which has at least two openings and is in fluid communication with at least one other identical balloonlet. The set of inflatable chambers may be framed into a network by a matrix of apertures expanded from a sheet of material with a pattern of overlapping cuts. The network of inflatable chambers may be comprised of a balloon system of balloonlets framed by an overlapping cut expandable matrix.

Abstract: Apparatus and method for internally sealing and sculpturing an elastic membrane expandable container is provided. One end of a generally hollow tubular insert extends into the container and stretches the elastic membrane of the container from the inside so that such end is sealed by the elastic force of the membrane. Another end of the insert extends out of the container with the container sealed therearound. The container may be pressurized by forcing materials such as fluids into the insert outward end and through the hollow insert so as to cause the elastic membrane to unseat from the sealed end thereof, thereby inflating the membrane. Once the pressure source is removed from the insert outward end, the elastic force of the membrane will cause it to contract and reseat against the tubular insert, thereby resealing it.