the present invention provides a pigmented thermoplastic film comprising one or more mineral filler agents at an amount effective to prevent or reduce the occurrence of discolouration when the film is stretched and / or to prevent or reduce the loss of the mechanical properties of the film , such as elasticity , stretchability , tear resistance , or perforation resistance . also provided is a process and a composition for manufacture of such films . the films of the present invention are useful for industrial packaging , especially with automatic wrapping machines , but may be used to wrap any product for shipping or storage .