Problems to be Paid Attention to When Printing Rubber in a Rubber Blanket

• When installing the blanket, pay particular attention to the liner's absence of any wrinkling. Under normal circumstances, blanket + felt it + paper; or blanket + worsted wool + paper. Felt, worsted wool, paper, etc., lining materials, do not care a little, the shop is not easy to wrinkle.

• When tensioning the blanket, both the trailing edge and the bite should be performed at the same time. Do not tighten on one side. Pay attention to safety during operation, avoid inserting the tools and screws into the rollers and rolling off the blanket.

• The new blanket has good elasticity and good stretchability. The tensioned blanket should be gradually stretched and tightened once. After the press is pressed for 3~5 minutes, it is tightened again. This can be achieved 2 to 3 times to achieve the tightening requirement.

• Whether the blanket and its liner is flat, if there is ink or debris in the blanket, there will be bumps and marks. Reinstall the blanket.

• Use a micrometer to accurately measure the blanket thickness of the blanket + felt or worsted wool + paper before installing the blanket. The four sounders, 嗒, 嗒, 嗒, and 嗒 should be heard. Soft lining: blanket+felt+paper, the lining thickness is: 3.35~3.45mm. Neutral lining: blanket + worsted wool + paper or blanket + paper, lining thickness: 3.20 ~ 3.25mm. Hard lining: Blanket + insulating paper or photo paper, with lining thickness of 3.18-3.20mm.

• Blanket trimming requires a rectangular shape, and the desired effect can only be achieved by selecting the direction of the warp of the blanket as the direction of cutting, tightening, and pulling. The warp and weft directions can be known by observing the cylinder shape of the natural roll. The direction of the wire parallel to the core line of the natural roll should be the weft direction, and the direction perpendicular to the weft direction wire is the longitudinal direction. Mainly based on the blanket back (back) plain weave fabric to determine silk.

• The backing paper inside the blanket liner should be shorter than the blanket so as to prevent the water from infiltrating the paper fibers from swell and deformation and reduce the rust of the drum.

• The blanket is an elastic body that must be stretched by force during the entire clamping, transmission, and imprinting process. In order to relatively accurately transfer the image size on the printing plate to the paper, the blanket is required to have a low elongation during the entire printing process and must be uniform. The above-mentioned elongation is related to the quality of the blanket itself, and depends on the degree of tightness of the blanket on the drum. The tighter the blanket is, the better it is? This is certainly not the case in practice. The blanket must be stretched tightly and properly. 1 The tighter the blanket is stretched, the lower the elongation during the printing process, and the smaller the size of the graphic. However, if the skin cloth is stretched too tightly, the amount of friction on the plate increases and the plate life decreases. 2 When the blanket is stretched too loosely, the expansion and contraction rate of the blanket will increase, and the amount of friction on the layout will decrease, which will easily lead to double printing (ghosting).