Before printing, we usually deal with lower grade paper. If the paper has lotus leaf edges, tight edges, wrinkles, etc., the surface of the paper is rough, and the black filler floats on the surface of the paper. During the printing process, there are often paper feed failures caused by paper deformation. Products and waste products not only seriously affect the progress of the operation, but also cause a great waste of raw materials, but also affect the quality of printed products: After repeated practice and active exploration, we have solved the problem of unstable quality of printed products when using low-grade printing paper through the following methods during the operation. That is, for the problem of uneven paper quality, select paper according to three grades of A, B, and C (A: printing paper, B: proofing paper, C: other paper), and use the selected A grade as Print paper on the machine, and then deal with it from the following three aspects. l. For non-plastic deformation, increase the drying time properly, and keep the temperature and humidity of the drying workshop consistent with the temperature and humidity of the printing workshop. Store the paper in the printing workshop for 3 to 5 days before starting the machine, so that the paper contains The amount of water tends to be balanced to prevent the phenomenon of graphic ghosting caused by paper ruffles. In doing so, the physical properties of the paper can be kept as stable as possible to meet the requirements of machine printing. 2. For the plastic deformation, under the condition of close to the ideal pressure, only the water is not filled, so the paper on the machine is run twice under the pressure of the offset press, and the paper is reached by the pressure between the rubber roller and the impression roller The maximum deformation, so that in actual printing operations, the difference between the size of the first-color printed graphics and the theoretical size and the difference in the same-direction registration tend to zero, enhancing the stability of the printing accuracy of the finished product. 3. Aiming at the deformation of the paper feed, install an anti-static device in the paper feed part and paper take-up part of the offset press to eliminate the static electricity of the paper and absorb the debris in the paper, to prevent the paper powder and paper wool from adhering to the printing plate and rubber On the cloth, eliminate the problems that are difficult to solve, such as sticking and dirt, and exclude double-sheet and skewed sheets caused by static electricity. A noise barrier, also known as a sound barrier or acoustic barrier, is a structure designed to reduce or block the transmission of sound from one area to another. It is typically used to mitigate noise pollution from highways, railways, airports, industrial sites, or other sources of loud noise.
The effectiveness of a noise barrier depends on several factors, including its height, length, location, and the type of material used. It is important to consider the specific noise source and the surrounding environment when designing and installing a noise barrier.
In addition to reducing noise levels, noise barriers can also provide visual screening and privacy for nearby residents or properties. They can be aesthetically designed to blend with the surrounding landscape or be customized with artwork or vegetation to enhance their appearance.
Overall, noise barriers play a crucial role in minimizing the impact of noise pollution on communities and improving the quality of life for residents living near noisy areas.
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