Corrugated board flexo printing plate

In the corrugated paperboard flexo printing process, the choice of media is very critical. Take DuPont Xili flexo printing plate as an example. The thickness of the commonly used flexible photosensitive resin plate is 2.84mm, 3.94mm and 7.00mm. The hardness is 25-50, and the most commonly used is 3.94mm. The thin version should be used as much as possible, because the thin version can not only perform flat solid printing, but also has a small dot enlargement, high overlay accuracy, stable print quality, and finer image layers compared with the thicker version.

When the quality of corrugated board is poor, a thicker plate with a lower hardness should be used. When the quality of corrugated board is good and small print or cable printing is required, a thin plate with a Shore hardness of 35-45 should be selected.

Thin plates must be used together with the pads to achieve good results. As shown in the figure below, with thick printing, when the printing pressure is too low, the printing substrate is likely to produce corrugated and “sawboard”-like patterns, as well as affecting the field and fine lines; when the printing pressure is too high, the printing substrate is easily deformed or even damaged. At the same time, the resin plate was deformed and the printing dots expanded, so a double-layered flexographic plate appeared.

The American R/bak air-cushion lining plate technology is a pad technology that is currently used in many applications. The main features are: reducing the pressure on the printing surface, effectively controlling the dot expansion; avoiding deformation of the printing plate and prolonging the service life of the printing plate; The plate roller has a unique compensating effect; it has good printability for low quality corrugated board and can avoid damage to corrugated board; it can increase the printing grade of traditional printing equipment. Air cushion lining technology is gradually replacing the traditional thick printing plate.

FAC-X (Traditional Edition) and FAC-DII (Digital Edition) are BASF's flexographic plates specially developed for the post-printing of corrugated paperboards. The Shore hardness is 32. This plate has excellent ink transfer properties and is suitable for direct printing. Various types of corrugated cardboard (A/C/B/E/F/N) are the most widely used for corrugated board printing with a basis weight of 80g/m2-250g/m2, which greatly improves the printing of corrugated cardboard. quality.

The flexibilities of the ART (traditional) and ART-D (digital) flexographic plates are relatively high (hardness: 40 Shore), which can effectively reduce the phenomenon of washboards. The good ink transfer capability greatly increases the coverage of inks. Obtain high-concentration color, mainly used for printing corrugated cardboard with a basis weight of 180g/m2-250g/m2, and enamel type E/F/N fine corrugated cardboard.

FAC-284X with thickness of 2.84mm (traditional version with digital version available) and ART 284 (traditional version with digital version available) for flexographic printing plates with printable corrugated noodles weighed at 120g/m2-250g/m2 The corrugated paperboard with B/E/F/N type can be printed with a higher screen number by attaching the thin plate material to the liner. Therefore, the printing screen is finer and the color layers are more abundant, so that it is more satisfactory. Printing effect.

Preprinted special flexo plate nylofleACE (traditional, digital version available) is regarded as a preprinting expert, adhering to many advantages of BASF plate, can be used for pre-printing of high-grade coated corrugated cardboard, its hardness is as high as 62 Shore, can effectively control the dot expansion, perfectly restore the tone range, and satisfy the printing quality requirements to the maximum.

ART (Traditional) and ART-DII (Digital can also be used for pre-printing of non-coated corrugated paper, with a plate thickness of 7.14mm to 2.84mm, moderate hardness, excellent ink transfer performance to ensure the print color Bright, full field printing requirements.

Features of nyloflex-ACE Series Flexible Plates:

● The EAN barcode after 500,000 impressions is clear;
● The unique product formula makes the printing plate more wear-resistant and gives you excellent printing stability;
● Excellent nyloflex-ART flexo printing ink;
●Nyloflex-FAC-X with good antistatic properties
● Flexible version has excellent exposure latitude, resulting in a deeper picture and text, greatly reducing the number of machine and shutdown, and improving production efficiency;

● Excellent ink transfer performance makes the field printing thicker.

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