In the selection of rubber rollers and their cleaning agents, we should pay attention to the overall benefits, reduce the overall cost, improve the printing quality, and enhance the competitiveness of enterprises.
installation
Correctly install the new roller bearing. Firstly, clean the impurities of the two ends of the new rubber roller, and then use the bearings whose specifications and models meet the design requirements, apply the lubricating oil on each mating surface, and force the special bearing sleeves to be properly and evenly forced until the bearings are installed in place. Do not apply force directly to the bearing and beat it at random to prevent the bearing from being damaged before it is used.
Make sure the roller bearings, shaft seat lubrication. Before the installation of the rubber roller, it is necessary to coat the outer surface of the two rollers of the rubber roller and the rubber roller bearing sleeve and bracket on the machine with grease to minimize the rotation, impact and friction caused by the back and forth movement of the ink roller. Reduce wear on both sides of roller bushing and shaft seat.
In recent years, UV printing has been widely used, and UV and ordinary dual purpose ink rollers have emerged. UV and ordinary dual-use ink roller installation method is as follows.
1. New ink roller adaptation program
When installing a complete set of new rubber rollers and printing with UV inks, the ink roller must be run with UV transparent ink or UV ink for 2 to 3 hours to fully adapt the ink roller to the UV ink, and then washed with UV washing water. Only for UV printing procedures. If you do not follow the above procedure, some UV inks may become hard and accumulate on the surface of the ink roller, resulting in uneven inking, heat generation, and difficulty in cleaning. The ink roller is also susceptible to wear. If ordinary ink printing is performed with a new ink roller, printing can be performed after it is installed.
2. UV ink printing and ordinary ink printing conversion program
When converting from UV ink to ordinary ink, the ink roller should be washed with a special UV washing machine and then printed with ordinary ink. Before printing, check whether all the ink rollers have been fully inked. When converting from ordinary ink to UV ink, UV printing can be performed after cleaning the ink roller. However, if you find that the ink is not good, use UV transparent ink or UV ink to run the ink roller for about 12 hours before performing UV printing.
debugging
To accurately determine the right position of the rubber roller on the printing press, regulate the pressure of the water roller and the ink roller. Whether the position of the rubber roller is appropriate or not is directly related to the uniformity of the ink transfer and the ink brushing, which directly affects the quality of the printed matter, and also directly affects other aspects, such as the life of the rubber roller. The contact pressure between the ink rollers should be kept even and moderate. If the pressure is too large, the rubber roller will be deformed by pressure, the colloid will expand due to the heat of distribution, the ink will be heated and easily thinned, and even "degumming" will affect the quality of the printing ink color; On the other hand, it is easy to damage the rubber roller head (bearing) or shaft hole. Ink roller height adjustment is also very important, adjust too high will be uneven ink, too low is easy to scratch the colloid, and increase the wear of the printing plate. Ink roller contact with the printing plate, generally can put a 40g / m2 on the plate around the toughness of the paper, when the ink roller rolling up after the note has a sense of pressure resistance can pull.
The height of the roller adjustment is also related to the structure of the printed material. If the print is printed with a background color, the rubber roller is adjusted to be lower, the error is ± 0.5mm, so the ink transferred from the ink roller to the printing roller is relatively uniform, and the printed product is pleasing to the eye; otherwise, the ink easily appears. Bar, ink channel and so on. When printing text, the height of the rubber roller is basically the same as the text version or slightly lower, so that the printing roller can gently rub the printing plate, so that the character printing is very clear and neat, and the rubber roller wear surface is small. It is not easily damaged and can extend the life of the printing plate. Adjustment should be used to adjust the rubber roller, first remove the printing plate to adjust the rubber roller horizontally into the pull out several times, adjust the size of the ink on the roller immediately displayed, the operator can according to the different needs of printing to determine the printing glue The height of the roller is then locked, so that the height of the roller will not change during high-speed printing.
When debugging the rubber roller, be patient, so as to avoid the following situations: the surface of the roller is damaged, dregs are dropped, the graphic is vague, the characters are absent, the characters are cut off, and even the stencils and glue jumps; the inks are mixed, and even the printed surface is only There is no ink in the print but it is too tight and the printing roller is damaged, causing equipment accidents.
use
1. Requirements for use environment of rubber rollers
Printing in a hot, humid, dusty environment, coupled with high-speed operation of the machine, will continue to increase the surface temperature of the rubber roller, colloid expansion, increase rubber roller friction, affect product quality, and shorten the life of the rubber roller.
Conditional printing companies, offset printing shop to install air conditioning, and keep the workshop clean and clean.
2. Issues to be aware of in print production
(1) Boot
It must be turned on with ink. If there is no need for a shaft seat, it must be filled with lubricant. The water roller must also be run with water, and must not be "dry-milled". Otherwise, the roller will be scrapped quickly.
(2) Longer downtime
The roller will be pressed in a certain fixed position, so there is the possibility of partial depression. At this point, it is best to remove the ink roller, clean it, and put it on the ink stand. Do not place it directly on the countertop to prevent local deformation of the rubber roller.
(3) Aging roller
The use of rubber rollers is too old and aging, coupled with the erosion of chemicals, resulting in rotten rubber off the "residue", such a rubber roller is best updated in time, so as not to seriously affect the quality of printed products.
(4) The temperature of the production environment is too low
At this point, the ink is not easy to be evenly mixed, and auxiliary materials may be appropriately added in the ink. It is forbidden to use an infrared heater and other baking ink rollers.
(5) Miscellaneous materials
During the printing operation, the offset printing machine should be kept clean and tidy, tools such as ink scoops and printing supplies should not be randomly placed, and even the debris and ink blocks should not be caught in the ink roller to scratch or scratch the ink roller.
installation
Correctly install the new roller bearing. Firstly, clean the impurities of the two ends of the new rubber roller, and then use the bearings whose specifications and models meet the design requirements, apply the lubricating oil on each mating surface, and force the special bearing sleeves to be properly and evenly forced until the bearings are installed in place. Do not apply force directly to the bearing and beat it at random to prevent the bearing from being damaged before it is used.
Make sure the roller bearings, shaft seat lubrication. Before the installation of the rubber roller, it is necessary to coat the outer surface of the two rollers of the rubber roller and the rubber roller bearing sleeve and bracket on the machine with grease to minimize the rotation, impact and friction caused by the back and forth movement of the ink roller. Reduce wear on both sides of roller bushing and shaft seat.
In recent years, UV printing has been widely used, and UV and ordinary dual purpose ink rollers have emerged. UV and ordinary dual-use ink roller installation method is as follows.
1. New ink roller adaptation program
When installing a complete set of new rubber rollers and printing with UV inks, the ink roller must be run with UV transparent ink or UV ink for 2 to 3 hours to fully adapt the ink roller to the UV ink, and then washed with UV washing water. Only for UV printing procedures. If you do not follow the above procedure, some UV inks may become hard and accumulate on the surface of the ink roller, resulting in uneven inking, heat generation, and difficulty in cleaning. The ink roller is also susceptible to wear. If ordinary ink printing is performed with a new ink roller, printing can be performed after it is installed.
2. UV ink printing and ordinary ink printing conversion program
When converting from UV ink to ordinary ink, the ink roller should be washed with a special UV washing machine and then printed with ordinary ink. Before printing, check whether all the ink rollers have been fully inked. When converting from ordinary ink to UV ink, UV printing can be performed after cleaning the ink roller. However, if you find that the ink is not good, use UV transparent ink or UV ink to run the ink roller for about 12 hours before performing UV printing.
debugging
To accurately determine the right position of the rubber roller on the printing press, regulate the pressure of the water roller and the ink roller. Whether the position of the rubber roller is appropriate or not is directly related to the uniformity of the ink transfer and the ink brushing, which directly affects the quality of the printed matter, and also directly affects other aspects, such as the life of the rubber roller. The contact pressure between the ink rollers should be kept even and moderate. If the pressure is too large, the rubber roller will be deformed by pressure, the colloid will expand due to the heat of distribution, the ink will be heated and easily thinned, and even "degumming" will affect the quality of the printing ink color; On the other hand, it is easy to damage the rubber roller head (bearing) or shaft hole. Ink roller height adjustment is also very important, adjust too high will be uneven ink, too low is easy to scratch the colloid, and increase the wear of the printing plate. Ink roller contact with the printing plate, generally can put a 40g / m2 on the plate around the toughness of the paper, when the ink roller rolling up after the note has a sense of pressure resistance can pull.
The height of the roller adjustment is also related to the structure of the printed material. If the print is printed with a background color, the rubber roller is adjusted to be lower, the error is ± 0.5mm, so the ink transferred from the ink roller to the printing roller is relatively uniform, and the printed product is pleasing to the eye; otherwise, the ink easily appears. Bar, ink channel and so on. When printing text, the height of the rubber roller is basically the same as the text version or slightly lower, so that the printing roller can gently rub the printing plate, so that the character printing is very clear and neat, and the rubber roller wear surface is small. It is not easily damaged and can extend the life of the printing plate. Adjustment should be used to adjust the rubber roller, first remove the printing plate to adjust the rubber roller horizontally into the pull out several times, adjust the size of the ink on the roller immediately displayed, the operator can according to the different needs of printing to determine the printing glue The height of the roller is then locked, so that the height of the roller will not change during high-speed printing.
When debugging the rubber roller, be patient, so as to avoid the following situations: the surface of the roller is damaged, dregs are dropped, the graphic is vague, the characters are absent, the characters are cut off, and even the stencils and glue jumps; the inks are mixed, and even the printed surface is only There is no ink in the print but it is too tight and the printing roller is damaged, causing equipment accidents.
use
1. Requirements for use environment of rubber rollers
Printing in a hot, humid, dusty environment, coupled with high-speed operation of the machine, will continue to increase the surface temperature of the rubber roller, colloid expansion, increase rubber roller friction, affect product quality, and shorten the life of the rubber roller.
Conditional printing companies, offset printing shop to install air conditioning, and keep the workshop clean and clean.
2. Issues to be aware of in print production
(1) Boot
It must be turned on with ink. If there is no need for a shaft seat, it must be filled with lubricant. The water roller must also be run with water, and must not be "dry-milled". Otherwise, the roller will be scrapped quickly.
(2) Longer downtime
The roller will be pressed in a certain fixed position, so there is the possibility of partial depression. At this point, it is best to remove the ink roller, clean it, and put it on the ink stand. Do not place it directly on the countertop to prevent local deformation of the rubber roller.
(3) Aging roller
The use of rubber rollers is too old and aging, coupled with the erosion of chemicals, resulting in rotten rubber off the "residue", such a rubber roller is best updated in time, so as not to seriously affect the quality of printed products.
(4) The temperature of the production environment is too low
At this point, the ink is not easy to be evenly mixed, and auxiliary materials may be appropriately added in the ink. It is forbidden to use an infrared heater and other baking ink rollers.
(5) Miscellaneous materials
During the printing operation, the offset printing machine should be kept clean and tidy, tools such as ink scoops and printing supplies should not be randomly placed, and even the debris and ink blocks should not be caught in the ink roller to scratch or scratch the ink roller.
A pet harness is equipment consisting of straps of webbing that loop nearly around-that fasten together using side release buckles-the torso of an animal.
These harnesses generally are made to have both a strap on the chest in front of the forelimbs, and a strap around the torso behind the forelimbs, with straps in between connecting these two. Having a D-ring suitable for (pet tags and) a leash to clip to, they are most often used to restrain an animal, but dogs also particularly wear them to assist a person with a disability or haul people and items. There is also the lifting harness for dogs with disabilities, covered in this article.
Some come in different sizes, although many are size-adjustable with tri-glide slides to loosen or shorten the straps` length. The straps may come in a range of different colors, and some have reflective coating.
Pet Harness,Dog harness,Classic Dog Harness
Yangzhou Pet's Products CO.,LTD , https://www.yzpqpets.com