This method allows an effective control of the thickness and
application speed over a suitable support that can be chosen for
each biopolymer solution used. The important advantage of films
produced by knife coating results from their improved uniformity
due to a strict thickness control, leading to a better property
reproducibility, mainly in the tensile tests. Another advantage of
the films produced by knife coating is that this method uses a device
simple to operate with little maintenance required. Also, there
is an important reduction of drying time from 24 to 48 h, for casting
method, to just 2 h. Thus, knife coating is a good method to produce
films in a large scale