COMPOSITION AND METHOD FOR OBTAINING A FILM OF MICROPOROUS THERMOPLASTIC POLYMER THAT IS ESPECIALLY SUITED TO THE PRODUCTION OF PERSONAL HYGIENE ARTICLES SUCH AS DIAPERS AND SANITARY DRESSINGS

摘要

The present invention consists in a method and a composition for obtaining films of a thermoplastic polymer, preferably polyethylene, that are non-breathable and heavily charged with treated mineral particles in order to leave hollow spaces in the structure thereof, resulting in a significant reduction in density. Owing to the fact that said films exhibit improved stability to the stresses they undergo during processing in diaper-production machines, and because, furthermore, they offer an important saving in terms of costs owing to the high mineral-filler content thereof and the low density thereof, they are especially suited to use as an outer covering for disposable diapers and sanitary towels.