Prefabrication process for stretched foil lampshade involves prefabricating foil into hollow body in form of hose or bag, mechanically stretching it on frame and heat shrinking

摘要

The prefabrication process involves prefabricating the foil into a hollow body in the form of a hose or bag, mechanically stretching it on the frame and heat shrinking it in position there so that it adopts the shape of the frame. The foil hose may consist of several identical or different light filters. It may be transparent or translucent.