What Are The Faults And Causes Of Rubber Bending Rollers?

There are many properties of rubber bending rollers, and the difference in performance and material has greatly affected the choices of some users. It specializes in the production of various rubber rollers with more than 20 years of manufacturing experience, strong technical force, sophisticated processing equipment, and complete testing methods. The material properties of rubber rollers are divided into many kinds, the following two kinds are given below to give you a brief introduction.

Medium resistance performance: This index is very important: some rubber rollers need to be used under immersion conditions, so before formula design, you should first understand what medium they are used in. Acid resistance, alkali resistance, high temperature resistance, corrosion resistance, and Wear and tear, the superior performance of various rubbers is very particular about the rubber raw materials and formula.

See the rubber bending roll failure and its causes.

1. Thermal aging: heating the rubber roller will accelerate the desulfurization and cause thermal aging, making the surface sticky and soft, and even cracks and orange patterns appear. The rubber roller can only be replaced at this time.

2. Colloid drop: The ink dries early during the transfer process of the colloid surface, and the dried ink film is reduced due to its ductility. During the rolling process, the colloidal surface will be destroyed with the cracking of the ink film, resulting in colloidal drop . The main reason for the early drying of the ink is the addition of a desiccant to the ink, the printing of inks with faster drying properties (such as POP ink for aluminum foil paper), and the failure to clean the ink roller as required, which makes the ink in the process of long-term use. Drying occurred on the rubber roller. If the temperature is too high during the process of the roller, the surface is easy to be carbonized, and the phenomenon of blocking will appear in the short-term printing. Excessive printing pressure adjustment, when the machine is idling, if the idling protection measures are improper or not timely, it will also accelerate the damage of the roller surface.

Solution: The rubber roller that has dropped blocks can be replaced to solve the printing failure caused by this.

3. Surface glazing: In the printing process, the organic and inorganic substances in the binder in the ink, the hydrophilic colloid in the fountain solution, the fillers from the paper, and the paint will form a layer of "brightness" on the surface of the ink roller. "Film" makes the surface of the ink roller vitrified and the ink transfer performance is reduced.