Agfa Gevaert Nv

Luc M De Groot

Gery Vancoppenolle

Jan Baptist Van Cappellen

Jan K De Keyzer

Daniel G Vandenbrande

In a known process of making biaxially oriented polyethylene terephthalate photographic film, a certain amount of curl in the longitudinal direction can be imparted to the film by carrying out the longitudinal stretching step of that process while the film is asymmetrically heated across its thickness to a temperature gradient Delta T across the film of at least 10.degree. C. while the longitudinal stretching tension applied to the film is less than 10 N/sq.mm.

Growing community of inventors

Aarschot, Belgium

Luc M De Groot