Using matting agents in a back layer is described in literature, however a hint at this I found so far only in two data sheets:
…back layer of the film (designed to achieve optimum vacuum draw down)…
Back layer designed for best reduction of Newton rings.
(To avoid confusion: a back layer does not necessarily need to be based on gelatine or a swelling polymer it can also be made of a waterinsoluble polymer, a lacquer.)
Last edited by AgX; 11-04-2009 at 06:11 AM. Click to view previous post history.