Procedure for obtaining a flexible tube, for the packaging of cosmetic products and / or creams for personal care, food products in the form of paste or pharmaceutical products, such as ointments and creams with an active medicinal ingredient, the tube being made by means of a plastic material consisting of polyethylene or mixtures thereof and containing powdered silver in nanometric dimensions as an antibacterial product, the procedure of which consists of the following steps: - preparing an additive in the form of granules containing from 1.8 ‰ to 2.5 ‰ in weight of the silver powder of nanometric dimensions by dispersing the silver powder of nanometric dimensions in an amount between 1.8 ‰ and 2.5 ‰ by weight of silver powder of nanometric dimensions in pure polyethylene powder to obtain a mixture , - then homogenize, extrude and granulate the mixture to obtain said additive, - add in the extrusion step the ad It is thus obtained in the form of granules to said plastic material in an amount between 4.8% and 5.5% of the weight of said plastic material, without changing the behavior of the plastic material during the production of the tube, including the tube an antibacterial closure cap, made of polypropylene or polyethylene with an added antibacterial product.Procedimiento para la obtención de un tubo flexible, para el envasado de productos cosméticos y/o cremas para cuidado personal, productos alimenticios en forma de pasta o productos farmacéuticos, tales como ungüentos y cremas con un ingrediente medicinal activo, estando realizado el tubo mediante un material plástico constituido por polietileno o mezclas del mismo y conteniendo plata en polvo en dimensiones nanométricas como producto antibacteriano, cuyo procedimiento consiste en las siguientes etapas: - preparar un aditivo en forma de gránulos que contiene de 1,8&permil； a 2,5&permil； en peso de la plata en polvo de dimensiones nanométricas al dispersar la plata en polvo de dimensiones nanométricas en una c
