If retensionable frames are used, for example, and liquid emulsion gets in the slots where the mesh is locked into the frame, the mesh can be difficult to remove. Capillary film does not create this problem. Film products solve several other problems as well. If pin holes are a problem, capillary film will eliminate the pin holes. Pin holes result from dust in the air that settles on wet liquid emulsion.
Printing causes the emulsion to break down where dust is present.
Films do not have this problem, because film is applied to mesh with water that flushes off any dust. Also, film does not have the dust in the film to create a weak spot that could spring a leak. When printing caps, sometimes customers want tall images on the cap. The film allows coating an even thickness of stencil material to the edge of the frame, and even overlapping the edge. Liquid emulsion is hard to coat close to the edge of the screen and will thin out close to the edge.