Patent ID: 8307765
Filing Date: 2012-11-13
Classification: B32B,B41F,B41P

Abstract:
1. A process for the printing of non-woven-fabric comprising the steps of: providing a non-woven-fabric sheet; providing an equipment for printing on non-woven-fabric comprising a driven support for the transportation of said non-woven-fabric, at least one driven printing body and holding means; feeding said equipment with said non-woven-fabric sheet; performing the printing on said non-woven-fabric under the control and command of a control and command unit, and constantly monitoring said non-woven fabric with an image acquiring device in order to detect the presence of creases or variations in the printing with respect to a preset standard; wherein said support are rotating bodies sending electrical signals to the control and command unit; wherein said image acquiring device keeps fixed markers, made during the process itself, constantly under control to detect the presence of any creases or variations in the printing with respect to a preset standard, and said image acquiring device acquires an image of said non-woven fabric and sends electrical signals representative of said acquired image to said control and command unit; wherein said control and command unit detects the electrical signals originating from said rotating bodies and compares said data to preset values that are calculated according to typology of the non-woven-fabric; wherein said control and command unit detects the electrical signals originating from said image acquiring device, compares said electrical signals with standard data stored in said control and command unit, the data being representative of a text or drawing to be reproduced on the non-woven fabric and, if any differences are detected, said control and command unit sends electrical signals to said support and at least one printing body in order to modify their respective angular speeds and torque moments to correct said differences; wherein the holding means holds the non-woven-fabric sheet onto the outer surface of the support, and operation of the holding means is achieved by suction fans which, by sucking air from the outside towards the inside of the support through holes, hold the non-woven-fabric onto said support; and wherein said control and command unit receives electrical signals from said suction fans so that the transport of the non-woven-fabric is adjusted by keeping the non-woven-fabric support well anchored to the press roller and the suction is calibrated according to the typology of the non-woven-fabric.