A roll, the pressure between the rollers between the heavy pressure, will increase the friction between the rollers, the rollers between the rollers increase heating heating, extrusion expansion, accelerated aging and deformation of rollers, accelerate the emulsification process of ink and water, this is not conducive to ink transfer.

The solution is that the pressure between the rollers should be approximately the same as that of the touch panel. The experience is to use a piece of 1500 wire, 3cm wide plug between the test cots, can feel a certain tension on the line.

After scrubbing, wipe it with a clean cloth and then place the top roller on the machine for the next use.

Two, roller surface crystallization treatment, surface crystallization closed rubber roller surface of the pores, will make cots lose the role of ink, resulting in ink transfer, fabric evenly, easy to appear ink emulsification.

The solution is: put the machine on the rollers unloaded, the shelf for the flat cloth group and pumice sticking kerosene, surface evenly rub rollers, the roller surface crystallization layer erase, showing the original color of the rubber rollers, and then washing water or gasoline left in the cots on kerosene and pumice cleaning clean, re install and adjust the pressure rollers.

Three, roller bearings on the maintenance of the machine in the high-speed operation, rubber roller bearing wear is very obvious, especially the operator usually pile bearing maintenance cloth, pay attention to that wear more fierce. Roller bearing is damaged to a certain extent, will produce roller beating friction and extrusion, shorten the service life of rollers. And will make the printed products have "ink, water bar" phenomenon. Therefore, the operator should take the rubber roller down every week, put the butter on the bearings, wear the badly worn ones, rotate the bad bearings, and ensure the normal use of cots.

Four, the workshop environment pile rollers flying in the hot and humid weather and dust from the surrounding environment in the production of high-speed operation of the machine so that the surface temperature of rollers rising cots in thermal expansion, increase the rollers friction, so shorten the service life of rollers.

So in the condition of the factory, printing plug-in requires the installation of air conditioning, keep workshop clean and tidy and clean, make the machine running in a good environment, only the production workshop in a good environment, can produce high quality products to.

Preparation of silicon rubber roller, rubber roller, crutch accessories, according to the use requirements, select the suitable rubber, the material finally formulated rollers outer glue can also further by a variety of reinforcing agent and plasticizer to adjust. The characteristics of several kinds of rubber commonly used on cots and their application in cots are described below.

Neoprene: suitable for making soft printed rubber rolls, photographic concave plates, printing rubber rolls and so on. Roller molding can be molded, film roll forming, winding forming or extrusion molding methods. Because of the poor storage stability of the rubber material, it is necessary to avoid the direct sunlight in the manufacturing process and control the temperature condition of the glue parking.

Nitrile rubber: used in the manufacture of printing cots, food industry roller, textile printing and dyeing cots, contact with soft rubber roller, etc.. Nitrile butadiene rubber has poor ozone resistance, so processing should be avoided in high ozone concentration environment operation. Acrylonitrile butadiene rubber and PVC are used to obtain a good ozone resistance and weather resistance of the rubber.

Polyurethane rubber: with outstanding tensile strength, abrasion resistance and crack resistance, polyester polyurethane rubber has good resistance to various solvents. In addition, the adhesive will continue to be under high temperature and humid conditions and will have an adverse effect on performance. For high speed and high pressure polyurethane roller, the key is to improve the dynamic roller problem and crack phenomenon.

Silicone rubber: heat resistance of 200-250 degrees, chemical resistance is very good, the main drawback is low tensile strength. Silicone rubber roller typical use of fabric heat setting, plastic heat setting, embossing, calendering, copier fixing, and so on. The molded silicone rubber roll is made of film wrap and has to be handled with low strength due to its low strength.

CSM has high toughness and elasticity, abrasion resistance and heat resistance up to 150 degrees. It has good resistance to various chemicals and oils and has excellent insulation. In addition to the casting process can be used in various ways, in the production process to avoid exposure to sunlight.

The ethylene propylene rubber: can be used in 150 degrees under the condition of high temperature, excellent chemical resistance, solvent resistance, but not resistant to hydrocarbon solvents and oils can be used for making printing roller extrusion roller, conveying roller, contact with acetone and ester solvent ink. The roll can be wrapped, molded and extruded, avoiding contact with oil and hydrocarbon solvents during process operation.

Con：Robinson Hsui

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Fax：86-572-2506816

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