抓取时间:2019年07月10日 15:59:59
网址:http://www.packing-machine.org/
标题:packing machine
关键字:slitting machine,slitter information
描述:
主体:

packing machineChina Packing Machine Equipment Supplier And ManufacturerGravure PrintingThe long run, high quality printing  processWikipedia entry for gravure  printing. Applications:Products printed by the Gravure printing process  include:Food packagingWall paperWrapping paperFurniture laminatesPanellingGreeting cardsMagazinesProcess  OverviewGravure printing is  characteristically used for long run, high quality printing producing a sharp,  fine image. The number of printing plants offering this process is significantly  lower than other printing processes. This is due, in part, to the cost of  presses, components & consumables such as gravure ink.While a lithographic press will cost in the range of $100,000  the cost of gravure press will be in the range of $1 million.Gravure printers are fairly scarce as wellA single gravure cylinder will cost  around $5000 versus around $15 for a lithographic plate how the gravure cylinder  will last much longer than a lithographic plate.The gravure  process has its origins in the early seventeenth century when the intaglio  printing process was developed to replace woodcuts in illustrating the best  books of the time. In early intaglio printing, illustrations were etched on  metal, inked, and pressed on paper. Gravure, still also known as intaglio  printing, makes use of the ability of ink to adhere to a slight scratch or  depression on a polished metal plate.Currently, the dominant gravure  process, referred to as rotogravure, employs web presses equipped with  cylindrical plates. A number of other types of gravure presses are currently in  use. Rotary sheet-fed gravure presses are used when high quality pictorial  impressions are required.They find limited use, primarily in Europe.Intaglio plate printing presses are  used in certain specialty applications such as printing currency and in fine  arts printing. Offset gravure presses are used for printing stocks with  irregular surfaces or on films and plastics.Today almost  all gravure printing is done using engraved copper cylinders protected from wear  by the application of a thin electroplate of chromium. The cylinders used in  rotogravure printing can be from 75mm (three inches) in diameter by 50mm (two  inch) wide to 91.5cm (three feet) in diameter by 6.09m (20 feet) wide.Publication  presses are from 1.82m to 2.43m (six to eight) feet wide while presses used for  printing packaging rarely exceed 1.52m (five feet) in width.Product gravure  presses show great variation in size, ranging from presses with cylinders 50mm  (two inches) wide, designed to print wood grain edge trim, to cylinders 6.09m  (20 feet) wide, designed to print paper towels. The basics of this process is  fairly simple and consists of a printing cylinder, a rubber covered impression  roll, an ink fountain, a doctor blade, and a means of drying the inkGravure  printing is an example of intaglio printing. It uses a depressed or sunken  surface for the image. The image areas consis