We are engaged in hologram printing,security stamping label and packing label printing nearly 20 years.

In the process of anti-counterfeiting label printing calibration 'three flat' what is it?

by:LG Printing     2021-02-26
Nowadays, more and more companies use anti-counterfeit labels, the function of the anti-counterfeiting mark can not only solve the security, prevent the transregional, also can help business marketing. Anti-counterfeiting label printing quantity more and more high, adhere to the printing process; Three flat can guarantee the quality of labeling, the so-called; Three flat is refers to the flat rubber cloth roller, water roller, roller, ink. Let's look at details.

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calibration; Three - < br / >
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1, the rubber cloth flat < br / >
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rubber flat is letting the surface of the rubber roll flattening. Lithographic offset using tape transfer printing, mainly because the fabric not only has good elasticity, has a good ink transfer performance at the same time. As a result, the quality of rubber cloth and the proper use, whether can be directly offset printing quality of the product, on the other hand, the surface of rubber cloth flat rubber cloth to obtain the correct use of surface features, in particular, the flat performance of rubber cloth is the overall process performance rubber cloth. Uniform distribution of rubber cloth surface is to ensure that the printing surface contact, completely site ink uniform transfer of the necessary conditions. < br / >
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the development of today's printed material, rubber cloth to manufacturing error of flatness error is greatly reduced, influence is mainly rubber cloth under the rubber cloth smoothness, rubber cloth pad what do flat mat set must be flat, rubber sheeting, grab attention in foreign body clamp pad pad to prevent wrinkles. < br / >
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by; Draw a map of method, make up for the rubber sheet sag. Specific methods are as follows: the ink evenly on the ink roller, generally with the yellow ink, the ink roller on the edition, evenly on the print ink after the pressure evenly. If the ink on the rubber blanket is uniform, said rubber cloth surface is flat; If shaped like a map of uneven surface of the rubber, rubber surface is uneven. The pencil on the paper backing or rubber cloth fabric, then put the different thickness of paper on the base of cloth wadded directly. < br / >
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2, roller leveling < br / >
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drum pin refers to the axis of the drum body between parallel to each other, the pressure between the drum body balance. Drum pressure is vital to complete the offset printing. If not parallel to the axis between the drum body, directly do not match the contact pressure drum, ink transfer effect is poor, uneven ink printing products. Therefore, in order to make the adjacent two drum axis parallel, adjust the pitch drum is a very important work, need careful finishing touches, hope to be able to spend time on this point. < br / >
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drum test are mutually parallel axis generally determine the pillow contrast between the same or detection, pillow clearance, the general method of yes, clean the surface of the pillow, pressure drum, pillow with diameter between 0. 5 mm software lead wire, adjust the pressure, through adjusting mechanism, measuring the thickness of the soft lead wire after the pillow of clearance; Micrometer feeler can also use ( Or feeler gauge) Measurement, fly a iron ruler and balancing machine, soft frame at the ends of the drum shaft, rolling, and then, feeler of micrometer thickness increase, the drum body surface and inserted between iron ruler, thickness and iron ruler to feeler feeler buried between equal contrast, calculation of total thickness, the contrast of the pillow. In order to accurately as possible, measuring a few times more, several. Measured at both ends of the roll gap need consistent, to ensure that roller between the axis of the parallel. Determination of general with plug-in drum as a benchmark. < br / >
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just measuring drum gap is equal, cannot guarantee axis parallel, need among all the ends of the drum shell, three points on the measurement of equal spacing, to realize the parallel axis. < br / >
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3, ink roller and water roller is flat < br / >
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(1) the ink roller. Laura - mainly ink ink uniform of cylindricity, pointing to the plate Laura's axis, ink Laura ( Also referred to as the plate Laura) Axis, and the string of ink Laura axis parallel to the line. Lose the ink institutions is uniform, stable and continuously provide the ink to printing surface. Ink roll flat alone, can guarantee the seal surface and ink roller, ink roller contact relationship with bunch of ink roller, so that the ink roller is the necessary condition to enter institutions work. < br / >
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in the production practice, we simply use printing and ink roller, ink roller and series ink roller pressure uniformity to represent the ink roller. The adjustment method is as follows. < br / >
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adjustment principle: four ink roller pressure is 1 & gt; 2 > 3 > 4, that is, before a ink roller pressure is big, the fourth root. Laura usually four ink printing, printing, first two printing machine structure water sends Laura is ink printing ink, its role is mainly referred to as the ink supply, its printing pressure is a little heavy, full of ink supply quantity; Then contact print ink roller is referred to as the ink roller, two main play the role of receiving ink, pressure light, make the ink more clean, bright and clear in favour of outlets. Ink roller and cross roller pressure compared with those of ink roller and printing roller pressure slightly lighter or equivalent. This is normal through in order to make the ink and ink roller linear velocity equals the linear velocity in print. < br / >
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to adjust order: after the first. After first ink roller, ink roller. Ink coating roll and string coated roll first, after the ink roll coating and printing.



 

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