• <nav id="2uuuu"><sup id="2uuuu"></sup></nav>
    欧美一区二区精品夜夜嗨,一区二区日本在线,夜夜嗨av色一区二区不卡,日本乱码在线,久草免费av,97超碰色偷偷,日本高清无卡码一区二区 ,性一交一乱一夜

    Search

    Current Location:Home > News > Industry news

    News
    Gravure Printing of Gravure Printing Press

    Category:Industry news   Addtime:2019-03-23 10:38:00   Clicks:2446 次

    Gravure printing is short for gravure printing, which is one of the four printing methods. Gravure printing is a direct printing method, which directly imprints the ink contained in the gravure pit onto the impression. The depth of the impression is determined by the pit size and depth. If the pit is deep, it contains more ink, and the ink layer left on the impression is thicker. On the contrary, if the pit is shallow, the ink content is less, and the impression after impression is less. The ink layer left on it is thinner. Gravure printing plate is composed of pits corresponding to the original text and the surface of the plate. When printing, the ink is filled into the pit. The ink on the surface of the plate is scraped off with a scraper. There is a certain pressure contact between the plate and the substrate. The ink in the pit is transferred to the substrate to complete printing.

    Gravure printing, as a kind of printing technology, occupies an extremely important position in the field of printing packaging and graphic publishing due to its advantages of thick ink layer, bright color, high saturation, high printing resistance, stable printing quality and fast printing speed. From the point of view of application, gravure printing is mainly used for fine publications such as magazines, product catalogues, packaging printing, banknotes, stamps and other securities printing, but also for decorative materials and other special fields; in China, gravure printing is mainly used for soft packaging printing. With the development of gravure printing technology in China, gravure printing has also been used in paper packaging, wood decoration, leather materials, pharmaceuticals. Product packaging has been widely used. Of course, gravure printing also has its limitations, the main shortcomings are: the technology of pre-press plate making is complex, the cycle is long, and the cost of plate making is high; because of the use of volatile solvents, the content of harmful gases in the workshop is high and the health of workers is greatly damaged; gravure printing practitioners require relatively high treatment.
    主站蜘蛛池模板: 综合av| 精品无码无人网站免费视频| 亚洲欧美aⅴ| 一区二区中文| 777欧美| 午夜无码伦费影视在线观看| 国产美女遭强高潮网站下载| 国产亚洲视频在线观看网址| 中国少妇内射xxxx狠干| 好骚综合av| 日韩av一区二区三区四区| 国产一本二本三本在线观看| 日韩中文字幕中文无码久本草| 人人人爽人人爽人人av| 麻豆安全免费网址入口| 比如县| 日本亚洲一区二区| 免费国产va| 白朗县| 亚洲熟女精品| 最大的成人网亚洲| 性感美女久久久| 夜夜精品浪潮av一区二区三区| 亚洲精品蜜夜内射| 日韩三区| 国产精品秘?国产A级| 夜夜嗨av一区二区三区| 瑞安市| 扎兰屯市| av日韩一区二区三区| 91福利视频导航| 午夜福利理论片高清在线| 制服丝袜人妻| 精品国产精品一区二区夜夜嗨| 久久午夜伦鲁片免费无码| 第九色区av天堂| 国模精品| 女女女女bbbbbb毛片在线| 在线人成视频播放午夜福利| 97精品| 三成人免费看|