METHOD AND MACHINE FOR PACKING IN STRETCHING FILM OF PRODUCTS FEED BY UNITS

摘要

Packaging method using extensible film and machine therefor includes feeding the groups of products, spaced apart and separate from each other, into a first and a second winding units to wind the groups of products with a first and a second extensible film disposed in opposite rotation directions to form a continuous packaging wrapped in two layers of film in opposite directions; and advancing the continuous packaging into a cutting unit, which cuts the continuous packaging transversally into finished groups of products. The winding step in each of the two ring winding units is selectively and alternately actuated with one of two ring winding machines provided at each of the two ring winding units, thereby achieving a continuous winding of groups of products even when the extensible film in at least one of the two ring winding machines at each of the two ring winding units is exhausted.