| abstract |
THE INVENTION CONCERNS THIN POLYESTERS MULTI-LAYER BEER FILMS, USABLE AS A SUPPORT FOR MAGNETIC STRIPS. THE FILMS ACCORDING TO THE INVENTION ARE CHARACTERIZED IN THAT AT LEAST ONE EXTERNAL LAYER HAS AN ORIGINAL ROUGNESS REPORTED AND CHARACTERIZED BY THE PRESENCE OF AT LEAST 5DOMESMM, THE DOMES HAVING A HEIGHT GREATER OR EQUAL TO 9100MM, A DOME AS A PROTUBERANCE THAT THE RATIO OF ITS HEIGHT TO ITS BASE IS LESS THAN 1100. |