according to the invention if in the case of inserts only certain areas are to be stiffened by suitable choice of dye components it is possible to dye only the stiffened areas it is also possible to add to the stiffening agent dye components which do not adhere to the latter and instead flow out of the same thereby dyeing the whole area of the insert however dyeing can also be performed in a separate working step the above indicated process can also be used for dyeing purposes alone the stiffening agent is replaced by the dye which is applied to the screen printing form in the pressure tank after dyeing of the whole area of the insert still without a stiffening agent the substrate can be stiffened the whole area or only parts thereof can be stiffened as desired as the process is based on a pressure action of the screen printing form making the use of a doctor blade unnecessary the form can be sub divided into different areas on the side remote from the printing substrate it is possible to apply different colors so that the inserts are printed simultaneously in multicolored form if printing takes place simultaneously with the stiffening treatment different degrees of stiffness can be obtained in the different area portions thus inserts can be produced in this way whose area portions are on the one hand only printed with color and on the other are stiffened with dye containing stiffening agents the different treatment of the area portions takes place in one and the same working operation as has already been stated the above described stiffening process can be extended so as to coat in punctiform manner textile fabrics with thermoplastic.