Failure Analysis and Corresponding Strategy of Film Gravure
Gravure cylinder making
1. Cause analysis
(1) If the hardness of the chrome-plated layer on the surface of the gravure cylinder is not up to the minimum requirement, the non-image area of ​​the surface of the gravure cylinder is liable to cause excessive friction between the squeegee and wear, and the worn area is immersed in the ink during use. , thereby transferring to the film to create a dirty fault.
(2) If the gravure cylinder is chrome-plated and the polishing treatment is insufficient, the surface of the chrome plating layer will be rough, and a dirty fault will occur when the machine is used.
(3) There is a plate making defect in the gravure cylinder, which may cause residual ink marks to cause a dirty failure.
2. Countermeasures
(1) Ensure that the surface of the gravure cylinder is smooth, high in hardness, good in wear resistance and long in service life.
(2) Determine the maximum printing capacity of each gravure cylinder by factors such as the hardness of the gravure cylinder, the depth of the cell, and the distribution of the cells. Once this value is exceeded, the surface of the gravure cylinder needs to be rechromed.
(3) Before the official printing , 800#～1000# sandpaper shall be used to grind the surface of the gravure cylinder in all directions.
Hair removal wax uses the viscosity of the wax to stick to the body hair and uproot the hair shaft from the hair follicle. However, because the dermal papilla is not damaged, the hair will regenerate, but the rate of regeneration is relatively slow.Hot wax is a mixture of beeswax and resin. Generally in a solid state, before use need to be heated to dissolve, until the temperature is reduced to suitable skin, can be painted on the skin.
Method of Use
1. Smooth the hair with the palm of your hand in the direction it grows.
2. Apply a little wax directly to the skin with a glue stick. Do not take too much wax each time. If necessary, separate several times.
3. Tighten the skin and pull it up quickly against the hair. Then the hair can be removed with roots.
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