Plastic bag and its method of manufacture

摘要

Manufacturing procedure of plastic material bags consisting of the longitudinal joining of at least two starting bands of plastic of different composition, a first transparent or translucent polymer-based band and a second opaque band consisting of polymers with a polyethylene-based additive of high density and high molecular weight and titanium dioxide and calcium carbonate loadings. At least part (9) of one of the walls (7) of the obtained bag is transparent, while the other wall (6) or part thereof is opaque and has a superficial aspect that simulates paper.