冬季来临，随着冷空气的来袭，多地出现了大风降温天气。气温骤降，除了会影响大家的出行之外，部分印刷工艺也会受到低温天气的影响。那么，在这种低温天气，山东印刷包装需注意哪些细节呢？

Winter is coming. With the coming of cold air, strong wind and cooling weather have appeared in many places. The sudden drop in temperature will not only affect your travel, but also affect some printing processes. So, in this cold weather, what details should Shandong pay attention to when printing and packaging?

防止胶印油墨变稠

Prevent offset printing ink from thickening

对油墨来说，如果室温和油墨的液温如有大幅度的变化，油墨移流状态就会发生变化，色调也会随之发生变化。同时，低温的天气对高光部位的油墨转移率会产生明显影响。因此，在印刷产品时，无论如何要对印刷车间的温湿度进行控制。另外，在冬季使用油墨时要提前预热，以减少油墨本身的温度变化。

For printing ink, if the room temperature and the liquid temperature of printing ink change significantly, the ink migration state will change, and the color will also change. At the same time, the low temperature weather will have a significant impact on the ink transfer rate in the high light areas. Therefore, when printing products, the temperature and humidity of the printing workshop should be controlled in any case. In addition, the ink should be preheated in advance when it is used in winter to reduce the temperature change of the ink itself.

由温度引起的油墨变稠现象，可以用以下办法：

The ink thickening caused by temperature can be solved by the following methods:

（1）将原墨放在暖气片上或暖气旁边，使其缓慢升温逐渐恢复到原状。

(1) Place the original ink on the radiator or beside the heater, and make it slowly warm up and gradually return to its original state.

（2）急用时可使用开水进行外部加温，具体方法是把开水倒入盆内，再将原桶墨放在水中，但要防止水蒸气浸入，待水温降到27摄氏度左右时取出，开盖搅拌均匀即可使用。印刷车间的温度以保持在27摄氏度左右为宜。

(2) In case of emergency, you can use boiled water for external heating. The specific method is to pour the boiled water into the basin, and then put the original bucket of ink in the water, but prevent the water vapor from being immersed. When the water temperature drops to about 27 ℃, take it out, open the lid and stir it evenly before use. The temperature of the printing workshop should be kept at about 27 ℃.

低温天气对纸张的影响

Influence of low temperature weather on paper

若环境温湿度得不到良好控制，会导致纸张变形，影响正常印刷。因此，保持适宜的环境温湿度是提高纸张印品品质和提高生产效率的关键。普通纸张对于环境温度的要求不那么明显，但当环境温度低于10℃时，普通纸张就会变得很“脆”，印刷过程中墨层在其表面的附着力就会下降，容易造成脱墨现象。

If the ambient temperature and humidity are not well controlled, the paper will be deformed and normal printing will be affected. Therefore, maintaining the appropriate environmental temperature and humidity is the key to improve the quality of paper prints and improve production efficiency. The requirements for ambient temperature of ordinary paper are not so obvious, but when the ambient temperature is lower than 10 ℃, ordinary paper will become very "brittle", and the adhesion of the ink layer on its surface will decline during printing, which is easy to cause deinking.

金银卡类纸张通常是以铜版纸、白板纸、白卡纸等为基材，然后再复合PET膜或铝箔等材料生产而成，其对环境温度的要求更高一些。这是因为金属和塑料材质对于温度的变化都非常敏感，当环境温度低于10℃时，将大大影响金银卡类纸张适性，当金银卡类纸张的储存环境温度在0℃左右时，从纸库运送到印刷车间后，其表面就会因温差而出现大量水汽，影响正常印刷，甚会导致废品出现。

Gold and silver card paper is usually made of coated paper, white board paper, white card paper and other substrates, and then compounded with PET film or aluminum foil and other materials, which requires higher environmental temperature. This is because both metal and plastic materials are very sensitive to temperature changes. When the ambient temperature is lower than 10 ℃, the suitability of gold and silver card paper will be greatly affected. When the storage ambient temperature of gold and silver card paper is about 0 ℃, after it is transported from the paper warehouse to the printing workshop, its surface will have a lot of moisture due to temperature difference, which will affect the normal printing, and even lead to waste products.

如果遇到上述问题，而且交货期紧张，工作人员可先打开UV灯管让纸张空跑一遍，使其温度与环境温度相平衡后再正式印刷。此外，低温干燥，相对湿度低，纸张与空气进行水分交换，纸张变干燥，变翘，收缩，会造成套印不良。

If the above problems are encountered, and the delivery date is tight, the staff can first turn on the UV lamp to let the paper run through the air, so that its temperature is balanced with the ambient temperature before formal printing. In addition, low temperature drying, low relative humidity, moisture exchange between paper and air, paper drying, warping, shrinkage, will cause poor overprint.

冬季低温，印刷包装须关注什么细节？我们从两个方面来了解一下问题，希望您在印刷过程中能够避免问题的出现，关注我们网站http://www.xinfengyinshua.cn，提供给您详细的印刷内容！

Low temperature in winter, what details should be paid attention to in printing and packaging? We understand the problem from two aspects. We hope you can avoid the problem during the printing process and pay attention to our website http://www.xinfengyinshua.cn , provide you with detailed printing content!