Rigid films or thick films are called packaging films from which stable or hard shells (hard-shell boxes) are made. It can do this mono films or high quality laminated films are used. Composite films offer a multiple of benefits such as simple sealing or welding to the top film.
SOFT FILMS
soft film is PA / PE laminates described. The number of layers can say something about the deep-drawing properties, but it must not. Polyamide (PA) is necessary for the oxygen barrier and for the shaping of the foil packaging. Polyethylene (PE) is necessary as water vapor barrier, sealing layer as a stabilizer of the packaging. The layer structure of the flexible film must meet the individual requirements. The deep-drawing of the flexible film is mainly dependent on the PA. soft film using for down and up film.
COMPOSITE FILMS - MULTILAYER FILM - FILM PRINTING - FLEXIBLE FILMS
The laminated composite films are on thermoforming mostly for use as up folie, less as down folie. Even as a shell sealing film for tray sealers composite films. Composite films for packaging machines - both horizontally and vertically are using for many years, their application and indeed as bagging films.