METHOD FOR MAKING A CALENDER ROLL AND THERMOPLASTIC SHEETS OR FILMS OBTAINED BY CALENDERING WITH SUCH A ROLL

摘要

The invention concerns a method for making a calender roll whereby after etching the roll (4). superficial metal layer, in particular made of copper, the roll etched metal surface is gated by being subjected to an anode oxidation. Preferably, the roll (4) superficial layer is produced by electroplating, the anode oxidation being carried out in an electrolytic solution (6) derived from the electroplating step. The calender roll is used to obtain, by calendering a thermoplastic resin, a sheet or film comprising at least one matt surface which is more particularly used for making disposable absorbent hygienic articles.