Gold and silver cardboard, laser paper is non-absorbent substrate, it uses the printing ink varieties should also match its characteristics in order to achieve normal printing and printing quality. As a result of various kinds of oxidized conjunctival drying type ink, because of its use of color, fineness, content, dispersion and the connection material and so there are some differences, so that the ink hue, concentration, viscosity, vividness, adhesion and drying Is also different, so the printing of gold and silver cardboard, laser paper packaging according to the characteristics of the product, printing machine characteristics, printing environment and other factors to consider, select the appropriate variety of ink for printing, in order to ensure the stability of product printing quality. Therefore, the purchase of gold and silver cardboard, laser paper printing ink, should choose a certain scale of production of the manufacturers, the quality is relatively stable and reliable, it is best to confirm the use of a manufacturer of ink. The company based on gold and silver cardboard, the characteristics of laser paper specially developed laser paper for ink with good printability. With fast drying, bright color, good printing and so on.

A reasonable arrangement of packaging and printing

Reasonable arrangement of gold and silver cardboard, laser paper printing order, is conducive to improving the gold and silver cardboard, laser paper products overprint accuracy and color effects. From the point of view of registration, it is advisable to print the color plate with no precision overprint, so that the sheet is compatible with the environment, so that the moisture content of the paper is relatively balanced and stable, and then the printing plate with high precision is printed in turn. Overprinted products, the layout of the layout of both the network and the field of the plate, to make this product outlets printed clear, solid color field layout, colorful, and is conducive to the accuracy of overprint, usually printed on the original version, Version. From the point of view to prevent ink stains, sticky dirty point of view, it is appropriate to print the area of less ink first printed, and the layout of the amount of ink on the back of India.

Process practice clearly shows that the large area of the layout on the back of India, not only can improve the product registration, but also improve labor efficiency. This is because a large area of the layout if the first printed, printed sheets prone to curl, elongation deformation and other undesirable phenomena. And the printed sheet once the curl deformation phenomenon, will affect the normal feeding and positioning, so that the second set, overprint, often need to cut the paper on the handle, so that increased stiffness and smoothness in order to achieve a smooth lose Paper and positioning. This printing color sequence overprint accuracy is low, knocking paper when it is very laborious, labor intensity. I have seen such a situation: a packaging and printing enterprises in the past printing gold and silver cardboard, laser paper packaging products, has been accustomed to using the first large print, post-printed small format "format" printing process operating procedures, The results of deformation of the printed sheet, some parts of the layout contours are not allowed to print up to 0.5mm-1mm range, scrap a few extremely amazing. Later, the printing color order to print the first small format, after printing overprint precision high layout, so that the quality of the product overprint has been greatly improved, a substantial decline in raw material consumption. Therefore, overprint, color, as long as the color effect is not affected, should try to arrange a small print, after printing large layout.

The correct control of printing ink

In order to ensure the stability of the ink quality of the printed matter, it is required that the printing drum adopt the small deformation coefficient to ensure that the lining of the printing process has no obvious compression deformation phenomenon; the imprinting of the machine and its associated parts are high, Always keep the same; printing machine roller, water roller head, bearing accuracy is high, the roller body should not be eccentric phenomenon, to ensure that the printing process before and after the printing ink stability. In the detection and control, due to gold and silver cardboard, laser paper surface reflectivity is high, it is easy to affect the naked eye on the color of accurate identification. In addition, the naked eye astringent vulnerable to visual impact, resulting in color discrimination on the existence of errors. Therefore, in the printing of gold and silver cardboard, laser paper products in the process, only by customary production methods, according to proofs or sample comparison to control the printing, ink is not enough. And with advanced optical instruments, the use of spectrophotometer and other testing, the printed matter for serious testing, is the accurate control of ink products and reliable measures.

The correct control of the fountain solution

Non-absorbent gold and silver cardboard, laser paper water consumption is relatively small, fountain solution can control a small range, suitable for use of alcohol and water fountain solution. In the printing of gold and silver cardboard, laser paper process, easy due to excessive drying caused by poor drying, which requires printing to strictly control the amount of emulsion, to minimize the amount of fountain solution to maintain the balance of ink. Therefore, in the production of alcohol fountain solution in a timely manner to detect the concentration and PH value, and the necessary supplement and adjustment. In the printing, according to the climate conditions, fountain solution PH value can generally be between 5-6 control, alcohol concentration can be controlled between 10% -20%. In addition, it should be noted that: the allocation of fountain solution should be used to store the next day to install the tap water to reduce the acidity of tap water on the impact of PH value.