Objetivo THE POSSIBILITY OF IMPREGNATING WET TISSUES DIRECTLY, THUS AVOIDING THE "ENERGY-EXPENSIVE" INTERMEDIATE DRYING STAGE IS BEING INVESTIGATED BY TNO. (THIS WORK WAS INITIATED IN A PREVIOUS EEC CONTRACT 392-78-EEN). THREE METHODS ARE NOW BEING TESTED IN THE LABORATORY UNDER THE PRESENT CONTRACT : EXPERIMENTS ON A PAD : WET CLOTH CAN BE IMPREGNATED IN A PAD, THE CONCENTRATION OF THE SOLUTION BEING ADJUSTED. TNO DETERMINED THE OPTIMAL VALUES OF THIS CONCENTRATION AS A FUNCTION OF IMPREGNATING CONDITIONS : TYPE OF CLOTH, SPEED, INITIAL WATER CONTENT OF THE CLOTH AND TYPE OF SUBSTANCE. THEY THEN ESTABLISHED A NUMBER OF PARAMETERS WHICH GOVERNED THE ADJUSTMENT OF THIS CONCENTRATION. EXPERIMENTS ON ENGRAVED ROLLERS : SATISFACTORY RESULTS WERE OBTAINED ON A SEMI-TECHNICAL PRINTING MACHINE. INITIAL RESULTS INDICATE THAT : THE EFFECT OF CLOTH SPEED IS SMALL, THE AMOUNT OF SOLUTION APPLIED DEPENDS ON THE ROUGHNESS OF THE CLOTH, AND THE PRESSURE BETWEEN THE PRINTING ROLLER AND THE CLOTH IS AN IMPORTANT PARAMETER. IMPREGNATION BY MEANS OF FOAM : IN SOME TEXTILE MILLS, CHEMICALS ARE APPLIED TO A DRY CLOTH BY MEANS OF FOAM. THIS METHOD COULD BE MADE SUITABLE FOR THE IMPREGNATION OF WET CLOTH. EXPERIMENTS HAVE BEEN CARRIED OUT BY TNO ON A SEMI-TECHNICAL INSTALLATION CONSTRUCTED BY TNO-FIBRE RESEARCH INSTITUTE. APPLYING THE FOAM BY MEANS OF THE VERTICAL SLIT METHOD, THE CHEMICALS WERE APPLIED FAIRLY EVENLY ACROSS THE WIDTH OF THE CLOTH. PENETRATION OF THE CHEMICALS INTO THE INTERIOR OF THE CLOTH WAS FAIRLY GOOD. THE PROCESS CONDITIONS SHOULD, HOWEVER, BE CAREFULLY SELECTED. Programa(s) PRE-ENNONUC 2C - Energy research and development programme (EEC), 1979-1983 Tema(s) Data not available Convocatoria de propuestas Data not available Régimen de financiación Data not available Coordinador TNO VEZELINSTITUUT Aportación de la UE Sin datos Dirección POSTBUS 110 2600 AC DELFT Países Bajos Ver en el mapa Coste total Sin datos
