Corrugated box printing version, with flexible version as the first choice. Flexo printing has the advantages that other types of printing methods cannot match, and has outstanding environmental protection features. However, these advantages and characteristics must be reflected in the products. High quality products must be printed. Users can recognize and accept flexo printing. Therefore, how to purchase and use flexo is a problem faced by each carton manufacturer.
There are two kinds of requirements for the flexo printing plate in the carton factory. One is to entrust the off-site co-workers to make the finished version; the other is that the plate-making equipment is self-produced in the factory, but in any case, it is necessary to understand why the flexographic printing plate is thoroughly understood. Things?
The flexo printing plate used for preprinting cartons is thin, with a thickness of 1.7mm~2.84mm and a hardness of about 50o Shaw Class A. Currently, it is not widely used in China and is rarely used in factories. The flexo printing plate used after the carton is thicker, with a thickness of 3.94mm~7.00mm and a hardness of about 30o~45o in Shaw's A grade. Currently, most cartons are used, and the thickness is 3.94mm.
For plates, proper storage and management are very important. The following is a brief introduction to the storage and management of flexographic plates in the case of sub-plate making, the whole box of plates and the finished plates.
First, when making plates in the factory, the basic processing rules for plate storage are as follows:
1, unexposed media ◆ placed in the box, wrapped in black plastic film
◆ can not be placed on the uneven contact surface
◆The surface sheet can be peeled before exposure of the film
◆ After peeling, if it is bent too much, the protective layer will wrinkle. These wrinkles will leave a stain after the exposure of the plate.
2. The exposed media:
◆ Be careful with a piece of cardboard cushion under the anti-bend
◆ Use the original surface sheet to lightly cover the above protection
3, wet plate after washing
◆ Avoid touching the resin surface, otherwise it will form a stain
◆ Avoid inhalation of solvent vapors during processing
4. After drying, the plate is placed on a flat contact surface to cool it
◆ Do not touch the resin layer
◆ Protect from sunlight or other ultraviolet light
Second, the plate material supplier to the entire box plate, in order to maintain the best state, stored as follows:
◆Temperature control: 5 to 25 degrees Celsius. When the temperature is lower than 10°C, the plate transferred to the plate making room must be stable for a period of time to avoid thermal shock effect on the exposure machine.
◆ humidity control, avoid excessive humidity (humidity within 60%)
◆ Placement method of packing box: all flat, no more than 10 boxes per stack
Third, from the plate maker to the finished plate, storage requirements are as follows:
◆ Pure air: good ventilation, no dust, no solvent volatile gas, away from the ozone source
◆Temperature control: 5 to 35 degrees Celsius
◆ No light: dark room
◆ Plates do not touch each other: There is enough air circulation