A method for making a wadding strip element, in particular to be used for making paddings of clothing articles such windcheaters and/or shoes, the wadding material being adapted for depositing thereon at least an auxiliary material, comprises at least the further step of subjecting the wadding strip element to a combined chemical, mechanical and thermal treatment process adapted to increase the mechanical strength of the wadding strip element and reduce its porosity, thereby allowing the deposit on at least a surface of at least a printing material or an auxiliary material thereby the deposited material only slightly penetrates the wadding material to create on the surface a predetermined printed pattern configuration adapted to withstand washing operations and inevitable wear, without decomposing.