Method of manufacturing food packaging cellulosic films and food packaging cellulosic films thus produced
AssigneeViskase Companies, Inc.
InventorsMyron D. Nicholson, Francois Bargeot
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Abstract
The present invention relates to a method of manufacturing a cellulosic film (cellulose film), particularly a cellulosic food packing film, especially a detectable cellulosic film, which cellulosic film comprises detectable particles incorporated therein, as well as to the cellulosic film thus produced and to its applications and usages (i.e. its use).
Claims35
A method of manufacturing a detectable cellulosic food packaging film, which cellulosic film comprises detectable particles incorporated therein, wherein the method comprises the following steps:
- (i) a first step of introducing detectable particles into a solution or dispersion comprising at least one of a cellulose and a cellulose precursor or derivative in the presence of at least one disversant, wherein the detectable particles are magnetic and are detectable by a metal detection device and wherein the dispersant is selected among surface-active detergents and polymers,
- (ii) followed by a second step of regenerating and recovering cellulose from the solution or dispersion in the presence of the detectable particles, so as to obtain a detectable cellulosic food packaging film comprising the detectable particles incorporated therein in homogeneous distribution.
2-48. (canceled)
A detectable cellulosic food packaging film, which detectable cellulosic food packaging film is made of at least one of a regenerated cellulose and cellulose hydrate (cellophane) comprising detectable particles incorporated therein.
Dependencies are inferred from the claim text.