The solution to such problems lies in the operation and installation of the material. The specific details are as follows: Put the material on the air expansion shaft, properly inflate the air expansion shaft, and after the material is placed on the conveyor belt, the operator stands on the UV roll. Hold the front end of the material in the center of the material, keep your hands apart as far as possible, grab the front end of the material and apply a slight force to pull the material forward to make the material slightly taut, then loosen it to let the material rest on the conveyor belt naturally, open the roll cloth to let the material Slowly rewind, when the material at the back end is flat, immediately start the suction switch, and turn the position of the cloth motor to low, so that the material is placed on the top, so that the material can be kept straight and smooth throughout the conveying process.
The sudden length and shortness are caused by the different degrees of stretching of the material under the same compensation setting. The compensation setting value in the RIP software of the UV web printer is adjusted and determined under a certain degree of stretch. In actual production, due to the inconsistent air volume of the air expansion shaft by the operator each time, the setting of the retracting motor gear is inconsistent. , the effect of the rewinding action on the pulling of the feeding cloth is different. When the pulling is very tight, the picture becomes shorter and worse, and when the pulling is very loose, the picture will become longer due to the original compensation setting.
The solution to this problem is to operate according to the above-mentioned material standards, and set the compensation value of the UV R2R printer according to the normal printing state (the setting of some compensation values is carried out in a very tight state and cannot be used as a reference. ).
The wider width is due to the slight deformation of the material after the ink is heated and the soft film itself has a certain extension, so the width change is a normal phenomenon. If there are installation applications that have strict requirements on the output width, it is necessary to perform output compensation settings. .
