Two suggestions for the proper installation of the blanket

Two suggestions for the proper installation of the blanket

The blanket is an intermediate carrier for indirect transfer of pictures and texts in the offset printing process. It is one of the main consumables for offset printing. Its quality directly affects the quality of the printing. Even a good quality blanket, if used improperly or stored poorly, will also affect the quality and service life of the blanket. The Shanghai Baoyin Company where the author is located has introduced the first UV six-color tinplate offset printing machine in China. This machine needs to use a special blanket, which has a high cost and a large amount of use. Therefore, the blanket is used correctly and properly maintained It is very important for production. The author wants to use this article to share the method of managing the blanket with other printing companies.

Blanket installation

1. The pad of the blanket must be narrower than the blanket, so that when the blanket is tightened by the machine's self-locking mechanism, the blanket can be tightly wrapped on the surface of the drum to prevent the penetration of various impurities, cleaning fluid, water and other substances Both sides of the blanket and the surface of the rubber roller cause problems such as oxidation and rust of the roller and delamination and blistering of the blanket. Our company's iron printing machine uses the currently popular automatic cleaning mechanism. The car wash water is sprayed onto the cleaning cloth from the inside. The cleaning cloth is in contact with the rubber cloth by inflation, and then the machine is rotated to achieve the purpose of cleaning. Therefore, if there are gaps on both sides of the blanket, it is easy to cause the car wash water to penetrate the surface of the drum and cause corrosion of the drum.

2. When the new blanket is installed on the machine, it should be tightened first, and then check the blanket for wrinkles, bubbles, etc. If there is no problem after inspection, let the roller turn and compact for a few times before tightening. The new blanket has good elasticity and good stretchability. Tightening the blanket should be carried out gradually. It is required that the trailing edge and the bite should be carried out at the same time. Do not tighten on one side. Every time it is tightened, it is ready to be pressed and rolled for 3 to 5 minutes, so that the purpose of tightening can be achieved by repeating it several times. After the blanket is tightened, you should also hit the blanket with your fingers at the bite. You can judge that the blanket has been tightened after hearing the crisp sound. Sometimes, in order to save time, the operator eliminates the need for inspection and confirmation. It is too late to wait for inspection after finding waste products printed.

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