Recently, due to the influence of strong cold air, the mountains and rivers of our country have been plunged into a vast expanse of snow and ice. In addition to affecting everyone's travel, the production of packaging and printing enterprises has also been affected by the low temperature weather.

So, in this low temperature weather, what details should packaging and printing personnel pay attention to?

Guangzhou Caihui Printing Factory suggests that the captain prevent the rotary offset printing ink from thickening in cold weather

For ink, if there is a significant change in the room temperature and ink liquid temperature, the ink flow state will change, and the color tone will also change accordingly. Meanwhile, low temperature weather can have a significant impact on the ink transfer rate in high light areas. Therefore, when printing high-end products at Guangzhou Caihui Printing Factory, it is necessary to control the temperature and humidity of the printing workshop no matter what. In addition, when using ink in winter, it is necessary to preheat it in advance to reduce the temperature change of the ink itself.

Guangzhou Caihui Printing Factory suggests the captain to pay attention: the ink is too thick and sticky at low temperatures, but it is best not to use diluents or ink adjustment oil to adjust its viscosity. Because when users need to adjust ink properties, the total amount of various additives that ink manufacturers can accommodate in the original ink is limited. Even if it can be used, it weakens the basic performance of the ink and affects printing quality and printing technology.

Guangzhou Caihui Printing Factory suggests that the captain can solve the problem of ink thickening caused by temperature using the following methods:

(1) Place the original ink on or next to the radiator, slowly heating it up and gradually restoring it to its original state.

(2) When in urgent need, hot water can be used for external heating. The specific method is to pour the hot water into the basin, and then place the original bucket (box) of ink in the water, but to prevent water vapor from soaking. When the water temperature drops to about 27 degrees Celsius, take it out, open the lid and stir evenly before use. The temperature in the printing workshop should be maintained at around 27 degrees Celsius.

Guangzhou Caihui Printing Factory suggests that the captain pay attention to using antifreeze UV gloss oil

UV varnish is also a material that is easily affected by low temperatures, so many suppliers specialize in producing two different formulas for winter and summer. The solid content of the winter formula is lower than that of the summer formula, which can improve the leveling performance of the varnish when the temperature is low.

Note that if winter formulas are used in summer, it is easy to cause incomplete oil solidification, which can lead to anti sticking and other phenomena; On the contrary, using summer formulas in winter can cause poor UV oil leveling performance, resulting in foaming and orange peel failure.

Guangzhou Caihui Printing Factory suggests the impact of low temperature weather on paper by the captain

In printing production, paper is one of the consumables that requires extremely high environmental temperature and humidity. Paper is a porous material with a basic structure composed of plant fibers and auxiliary materials, which has strong hydrophilicity. If the environmental temperature and humidity are not well controlled, it will cause paper deformation and affect normal printing. Therefore, maintaining appropriate environmental temperature and humidity is the key to improving the quality of paper printing and improving production efficiency.

The environmental temperature requirements for ordinary paper are not so obvious, but when the environmental temperature is below 10 ℃, ordinary paper will become very "brittle", and the adhesion of the ink layer on its surface will decrease during the printing process, which is easy to cause deinking.

Gold and silver card paper is usually made of copperplate paper, whiteboard paper, and white paper