What are the common reasons for solvent degumming on BOPP film? How to solve?
BOPP is the abbreviation of "Biaxially Oriented Polypropylene", that is biaxially oriented polypropylene film. It is the production of polypropylene polymer melt is made first by a narrow nose or thick sheet, then stretched in a dedicated machine, at a certain temperature and speed setting, at the same time or step by step in two perpendicular directions (vertical and horizontal) on the stretch, and after appropriate cooling or heat treatment or special processing (such as corona and coating) made of thin film
Surface coating for BOPP, good coating can solve the problem of insufficient surface energy, and completely solve the problem of degumming. Many manufacturers offer BOPP films with surface coating.
There is only one reason why the --bopp surface is not enough.The solution: corona treatment or flame treatment of BOPP film (partial solution, and possibility of degumming);
