Inventors:
Harold C. Arvidson - Princeton Junction NJ
Quayton Ray Stottlemyer - Wilmington DE
Assignee:
E. I. Du Pont de Nemours and Company - Wilmington DE
International Classification:
G03C 180
B29C 2500
Abstract:
A process for producing flat sheets, particularly photographic sheets for use in automatic film changing equipment, from a stored roll of material. A thermoplastic film is briefly heated to above its second order transition temperature but not over 120. degree. centigrade prior to cutting for packaging. Such heating removes roll curl developed during storage of the film in rolls, without adversely affecting the quality of the film.