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Extrusion and transfer roll coater

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  • 17/08/2018

Extrusion and transfer roll coater There are many specific problems to be solved before applying for a patent, and there are more problems to be solved in order to commercialize the invention. For example, the printing industry has been making inks (lacquering cats and carbon blacks) for hundreds of years. The film is printed on paper. The idea of coated paper porcelain clay and gum cats also seems to be a matter of course. But the record shows that many people try…

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Coating equipment four systems

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  • 16/08/2018

Coating equipment four systems First, the gas supply systemThe gas supply system generally includes a centrifugal fan and motor, a cooler and a pop-up filter for photographic paper coating. The amount of air depends on the width of the coater, the opening of the slit, and the operating pressure. Table 34 shows the three types of lip opening to a pressure of 68. 9 kPa or less, the typical air volume per cm width. Typically, the operating pressure is 20. 7-34. 5kPa to reduce fog and noise.Second, t…

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Air knife coating machine

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  • 15/08/2018

Air knife coating machineThe air knife coating machine (also known as air squeegee or air brush) is the first of the three types of coating machines that revolutionized paper coating. The Terry patent was first awarded in 1938. This new coating machine will soon be available. Get adopted. The new concept of air knife increases the operating speed from 120m/min to 300m/min. Compared to the brush coater, not only is the speed increased, but the downtime (especially the rinsing time) is greatly shor…

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Historical coating machine and special coating machine

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  • 14/08/2018

Historical coating machine and special coating machine The change from manual coloring to the use of a mobile brush coater began in the 20th century, and with the participation of many people, once a basic concept was formed, it quickly improved.The historical process of development work is summarized below and will be discussed in chronological order:- Historical Xubu machine and special coating machine;- air knife coating machine;- squeeze roll and transfer roll coater;- a flexible blade coater…

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Paper coating additive (auxiliary)

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  • 13/08/2018

Paper coating additive (auxiliary)We have discussed base paper, pigments and adhesives in coated paper raw materials. Now we will introduce the fourth raw material, which is the paper coating additive. These raw materials tend to modify the coating mixture in a small amount in a certain amount, and only one or more main components in quantity (for example, china clay, or china clay plus calcium carbonate, or gel a solids, Or a small portion of all liquids. They cant give accurate doses because th…

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Preparation of coated paper coating

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  • 10/08/2018

Preparation of coated paper coatingIt is generally believed that even the most carefully considered design recipes must be adjusted to cope with various variables in materials and operations. The finished coated paper must meet the technical requirements specified for it, so its manufacturing process must allow for differences in composition and process. In other words, if the same type of coated paper is made on two machines, there may be a slightly different formulation.First, the basic process…

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