Edit the types and uses of commonly used rubber rollers in this paragraph

* Natural rubber rollers:

Excellent elasticity and mechanical strength, good alkali resistance, It is used for compression rubber rollers in textile, papermaking, leather, packaging and other equipment and traction rubber rollers in metallurgy, mining and other industries.

* Nitrile rubber roller:

Excellent oil resistance, wear resistance, aging resistance, and heat resistance. Used for printing, printing and dyeing, chemical fiber, papermaking, and packaging , plastic processing equipment and other occasions in contact with oil and aliphatic hydrocarbon solvents.

* Neoprene rubber roller:

Excellent wear resistance, high fire resistance, aging resistance, good heat resistance, oil resistance and acid and alkali resistance, used for printing Plate etching machines, plastics, tanning, printing, food printing, general coating machines and other equipment.

* Butyl rubber roller:

High resistance to chemical solvents, good heat resistance (170℃), excellent acid and alkali resistance, suitable for color printing machinery, Tannery machinery, coating equipment, etc.

* Ethylene-propylene rubber roller:

Excellent resistance to ozone aging and weathering, wide operating temperature, can work for a long time at -65℃-140℃, excellent insulation performance, used Used in plastic printing machinery, tanning machinery, and general fields.

* Polyurethane rubber roller:

It has extremely high mechanical strength and wear resistance, aging resistance and oil resistance. It is often used in papermaking, chemical fiber and wood processing. , plastic processing and other machinery.

* Silicone rubber roller:

Using its high temperature resistance, ozone resistance, chemical inertness and non-adhesion to plastics, it is used to process hot-adhesive products, such as polyethylene Machinery for calendering, embossing, printing and dyeing, coating adhesives for films and fabrics, plastic compounding, corona treatment, etc. It is also used as release rollers on sugar production and packaging machines and for non-woven manufacturing.

* Fluorine rubber roller:

It has extremely high heat resistance, oil resistance, acid and alkali resistance, air permeability resistance, electrical insulation, aging resistance, flame resistance, and It also has good grinding properties and is used in special coating equipment.

* Carbon fiber roller:

Light weight, high strength and high temperature resistance. Used in special industries such as wide-format films.

Edit this paragraph: Six issues should be paid attention to when using offset printing press rollers

* The printing rubber roller mainly transfers ink on the offset printing press. Therefore, the rubber roller must be cleaned carefully when cleaning it daily, otherwise the surface layer of the rubber roller and the pigment and resin will oxidize to form a smooth and hard film, causing the surface to become vitrified and affecting ink transfer. If it is not cleaned frequently, the surface of the rubber roller will become uneven over time and become difficult to use. Therefore, when shutting down, the rubber rollers should be cleaned and put aside for later use. * During the offset printing operation, ink emulsification occurs due to "big water and big ink", forming a hydrophilic base on the smooth rubber roller, making it deinked. The solution is to shovel off the emulsified ink, wash the deinking rubber roller with gasoline, and polish it with a mixture of 5% sodium hydroxide aqueous solution and pumice powder. At the same time, the metal roller (or hard roller) should also be treated accordingly. The hard roller can also be polished with fine water sand while being sprayed with water. Be careful not to stay in the same position, otherwise the rubber roller will be damaged. The fundamental method is to control the pH value of the water bucket liquid and achieve a good balance between ink and water. * The rubber roller has been used for a long time and aged, coupled with the erosion of chemicals, resulting in rotten rubber and "slag". It is best not to use such rubber rollers, otherwise it will seriously affect the quality of the prints. * To ensure that production and printing quality are not affected, spare ink rollers must be available, but do not store them too much to avoid aging. The storage environment of rubber rollers is the same as that of blankets. In addition, the rubber roller should be set up straight at the journal, and the surfaces should not be in contact with each other or other objects to avoid deformation of the rubber roller. * Rubber rollers should not be stored near large motors or generators. Because the large amount of ozone produced by these devices will cause the surface of the rubber roller to age and crack. * When the weather is cold and the ink is uneven, you can add auxiliary materials to the ink appropriately. It is prohibited to use infrared heaters and other equipment to bake the ink rubber roller to prevent the rubber roller from oxidation.

Edit this paragraph to provide some tips on the correct use and maintenance of rubber rollers

* Newly cast rubber rollers should not be put into use immediately. Since the internal structure of the newly cast rubber roller is not stable enough, if it is put into use immediately, the service life will be easily reduced. Therefore, the new rubber roller that has just come out of the barrel should be left for a period of time so that the rubber roller can maintain a relatively stable state after contacting the temperature and humidity of the external environment. This can increase the toughness of the colloid and thereby improve the durability. * Correct storage of unused rubber rollers.

The rubber rollers to be used should be cleaned, and then the colloid should be wrapped with plastic film and placed on the rubber roller stand. Do not pile a few of them together casually or lean them against the wall to avoid undue losses to the colloid. . During the transportation of used rubber rollers to processing and casting, it is important not to throw them around, press them, or press them heavily, and keep the roller core from being eccentric or bent to ensure normal use of the roller core. * The rubber roller head and bearings should be kept well lubricated. We know that the accuracy of the rubber roller head and bearings directly affects the effect of ink transfer and ink distribution. If poor lubrication causes wear and clearance of the rubber roller head and bearings, it will inevitably lead to uneven printing ink color. At the same time, printing marks may also be caused by bad conditions such as glue skipping and glue slippage. Therefore, you should frequently add lubricating oil to the head and bearing of the rubber roller to prevent the normal use of the rubber roller from wear and ensure the printing quality.

Edit the detailed types of rubber rollers in this paragraph and now mainly include

Printing rubber rollers, natural rubber rollers, styrene-butadiene rubber rollers, metallurgical rubber rollers, special rubber rollers, gravure rollers, textile rubber rollers, nitrile rubber rollers Roll laminating machine roller printing and dyeing rubber roller neoprene rubber roller covering machine roller papermaking rubber roller butyl rubber roller textile machine roller printing rubber roller ethylene propylene rubber roller plastic coating machine roller wood industry rubber coating roller silicone rubber roller film blowing machine roller industrial glue Roller Fluorine rubber roller Rubber roller Coating roller Rubber rubber roller Glue rubber roller Smoke machine rubber roller Rubber plastic rubber roller Oil glazing rubber roller Iron printing rubber roller Glass bead rubber roller Type machine rubber roller Leather machine rubber roller Solvent-resistant rubber roller Trademark machine rubber roller coating roller nylon roller press rubber roller glass machinery rubber roller UV rubber roller printer rubber roller woodworking machinery rubber roller PU rubber roller dehydration roller alcohol dampening roller chrome plated roller ink roller rice hulling rubber roller copper plated roller ink machine rubber roller Polyurethane rubber roller, mirror roller, acrylic rubber roller, sanding roller, anilox roller, transfer roller, printing machine rubber roller, resin rubber roller, hot stamping roller

Edit this section on the debugging and maintenance of printing rubber rollers

People who have been engaged in the printing industry for a long time are very aware of the importance of printing rubber rollers. Because it is directly related to the printing plate and inextricably linked to product quality, whether you are using an offset printing press, a letterpress printing press, a gravure printing press, or a flexographic printing press, you are faced with how to select and debug it. If you cannot rationally utilize and follow its operating rules, not only will you not be able to print ideal and excellent products, but you will also damage the rubber roller and shorten the service life of the printing plate. It is difficult to adjust the printing roller to the optimal level and ideal point, and it cannot be mastered overnight. Because it does not have a fixed program, it all depends on the leader's long-term production practice to summarize, explore, explore, innovate, and sort out a set of effective printing skills. Therefore, it is very important to debug the printing rubber roller. The following is a comprehensive discussion on the selection, use, debugging and maintenance of printing rubber rollers. Selection of printing rollers: With the rapid development of the market economy, new equipment, new processes, new materials, especially new printing equipment, are also produced. Upgrading is also relatively timely, and domestic printing equipment also tends to be high-tech, durable, and advanced. From the perspective of the international printing industry, data shows that some developed countries such as Europe and the United States are still ahead of us in terms of printing equipment. Although the domestic printing industry introduced many printing machinery and printing equipment from developed countries in the 1990s, when the printing rubber rollers need to be replaced after a certain period of use, the domestic printing rubber rollers are far inferior to the original equipment rubber rollers. In the past, printing companies had built-in "glue rooms" that specialized in producing printing rubber rollers, which caused serious pollution. With the development of the printing industry and the replacement of equipment, traditional old-fashioned printing rollers are gradually being eliminated because they cannot meet the needs of high-speed printing machines. Its disadvantage is that it cannot adapt to high temperature and high humidity environments. It becomes soft at high temperatures and hard at low temperatures. It is especially unsuitable for gold printing and screen printing, which hinders the improvement of printing quality. In the 1980s, there was a major revolution in printing rubber rollers. The new rubber rollers were not restricted by climatic conditions and were strong and corrosion-resistant. However, the cost was high, which discouraged small and medium-sized enterprises. With the rapid development of the economy, it is still well received by the majority of users. Debugging and correct use of printing rubber rollers: Regardless of any printing machine type or model, after the new equipment is installed, the printing rubber rollers must first be installed by technicians and lead machines. The installation height of the rubber roller must be reasonably adjusted, and it must be in close contact with the ink roller and printing plate, both of which are indispensable.

Printing practitioners all know that the height of the relief plate is 3.14mm, which is consistent with the height of the typeface, while the PS version is relatively low at 1.2mm, so you must be aware of it when installing and debugging the rubber roller. If printing with a background color, the rubber roller can be adjusted lower, with an error of ±0.5mm. In this way, the ink transferred from the ink roller to the printing rubber roller is relatively uniform, and the same is true when the printing rubber roller is reflected on the printing plate. The effect is that the printed product is pleasing to the eye. If not, phenomena such as ink bars and ink channels will appear. When printing text, the height of the rubber roller is basically the same as or slightly lower than the text plate. This allows the printing rubber roller to gently rub the printing plate, so that the text is printed very clearly and cleanly, and the wear surface of the rubber roller is small. It is not easily damaged and can extend the service life of the printing plate. A rubber roller should be used when adjusting. Before use, take out the printing plate and let the rubber roller extend in and out horizontally several times. The size of the ink dots on the rubber roller will be displayed immediately. The operator can determine the height of the printing rubber roller according to different printing needs, and then Tie the top wire securely. In this way, the height of the rubber roller will not change during high-speed printing. If we are impatient when using rubber rollers and are eager to save trouble when debugging, the following situations will occur: (A) The surface of the rubber roller will be damaged and slag will fall off, causing the text to be printed with missing pens and lines, the text will be blurred, and even appear Blurred and glue-jumping phenomena. (B) The inking of the text is uneven, and there may even be only text marks on the surface of the printed product but no ink color. (C) If the rubber roller is adjusted to be too tight with the ink transfer rubber roller, the printing rubber roller will be twisted and damaged, causing economic losses and equipment accidents. Maintenance of printing rollers: In offset printing technology, the key is to control the balance of water and ink paths, and the balance of ink and water depends on the key components of rubber rollers and ink rollers, whose quality can directly affect product quality. This is especially true for gravure printing, embossed printing, and flexo printing. Generally, printing companies need to maintain their equipment once a week, including the maintenance of printing rubber rollers. Maintenance methods include the following: 1. After the production operation is completed every day, the rubber roller should be carefully cleaned and washed twice; 2. The designated chemical preparations, such as industrial alcohol, must be used to clean the printing rubber roller, and corrosive chemicals must not be used. Solvent; 3. Remove the rubber roller during holidays to prevent deformation due to pressure; 4. To protect the surface of the printing rubber roller, wrap it in newsprint and place it in a ventilated and dark place.