Method and apparatus for coating a web and product produced thereby

摘要

The subject-matter of this Specification is substantially the same as that described with reference to Figs. 1 and 5 in Specification 982,758, but the claims differ. In addition, it is stated that the extrusion head may be heated, and that bond-enhancing compounds, e.g. cellulose acetate or nitrate, or polythene, may be applied to the web before the coating step.