In the label printing, semi-rotary reciprocating feeding rotary offset printing and full equipment is a new type of printing, used for combination printing, the printing process also applies to separate the short (long) version live. Held in Shanghai Labelexpo Asia 2007, Beijing Technology Development Co. Ltd. for Basch Iwasaki of Japan's TR2 stickers show the only offset is the offset of a reciprocating feed offset press, attracted visitors strong concern. Some domestic machinery and equipment manufacturers have begun to develop self-adhesive label roll press, such as the Ruian City Donghai Printing Machinery Co., Ltd production of ZX-320 Intermittent-type printing press has made trademarks of PS version of a good market effect, and transit Printing Machinery Co., Ltd., Shanxi Taihang Tianze Machinery Manufacturing Co., also printed in 2009, South China exhibition on display at the rotary offset printing equipment, the North Fuji Printing Machinery Co., Ltd. CHINA PRINT 2009 will be on display at the new offset press.

In the current label printing using the printing, various printing methods such as offset, gravure, flexo and screen printing and so on all applications. The label web offset printing market is entering a new army, it is label printing processors and their customers with a new printing. It is different with flexo, can provide a higher quality.

Compared with the advantages of offset printing offset printing and flexo printing flexible tags can be used for production of the same, but specific in different ways, although the narrow flexographic printers in the use of more common, but there is offset its own strengths and weaknesses.

Offset printing ink delivery system more complex, composed by a number of long roller ink road. Offset printing plate is positive picture, flexo is the negative image. Offset printing technology is widely used, is the first image on the ink transferred to the blanket, and then transferred to the printed surface of a printing method.

Two kinds of printing ink used is different. U.S. sales manager DavePancoast LabelOneConnect explained: "flexo ink viscosity used is similar to milk. The plate is made of nylon or plastic, the ink on the plate directly transferred to the film base or paper substrates. Offset printing ink a paste, and relatively heavy, large color strength. ink transferred to the plate first, and then by the blanket and then transferred to the substrates, the transfer ink system is relatively complicated. "

Spain Rotatek general manager JosepM.Soler pointed out other differences. He said the largest flexo printing accuracy is 170 ~ 180dpi, and the rotary offset printing up to 200 ~ 300dpi, and flexo printing method is more simple and economical. Denmark Etipol General Manager JesHilfling said: "offset must be UV drying, and drying can be used flexo, UV drying can also be used."

Offset and flexo ink flow is different. Hilfling explained: "The flexo ink flow from the mesh roller to control the volume, but offset by the amount of ink fountain keys to adjust." Hilfling pointed out that the flexo and web offset both the similarities. He said: "Both the pre-press preparation time are the same. Both are very high printing speed, up to about 100 to 200 meters per minute." Soler also believe that the printing speed is not very different between the two, to achieve each minutes, about 1,000 feet.

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