When selecting the color, we must consider its color characteristics, such as light resistance, penetration, lead, etc., so as to avoid economic losses.

1、用线色加白色调配粉红色，如10%-20%红色加90%-80%白色，注意红色耐光性，因油墨生产厂家注明的颜色特性指原墨的耐光性，但用户将两种不同颜色进行调色，会降低红色耐光性，本公司的10桃红，原色墨耐光只有C级，如再进行调色的话，红色份量越少，耐光越差，如用户一定调配粉红色，建议选用耐光性能好的颜色(在配色内10%-20%红色也能达到耐光7-8级)。

1. Use line color plus white to mix pink. For example, 10% - 20% red plus 90% - 80% white. First, pay attention to the light resistance of red. Because the color characteristics indicated by the ink manufacturer refer to the light resistance of the original ink, but if users color two different colors, the light resistance of red will be reduced. The light resistance of the original color ink of our company's 10 peach red is only grade C. If you color it again, the less red will be, The worse the light resistance, if the user must prepare pink, it is recommended to choose a color with good light resistance (10% - 20% red can also reach light resistance level 7-8 in the color matching).

2、北京印刷厂很多印刷品都采用紫色，一般的紫色油墨单价低，如单面印刷则无须担心，如一些包装要双面印刷时，特别注意紫色渗透，因为普通的紫色是具有渗透性(01紫会渗透)制成成品后存放时间长，印刷品背面的紫色会渗透到下面有印刷的其它颜色上，所以用户要进行双面印刷一定要考虑颜色的渗透性，选用不渗紫来印刷，避免损失，用01紫所配的其它颜色也具渗透性。

2. Many printed materials in Beijing printing factory use purple. Generally, the unit price of purple ink is low. There is no need to worry about single-sided printing. For example, when some packages are printed on both sides, pay special attention to purple penetration, because ordinary purple is permeable (01 purple will penetrate). After the finished products are made, they will be stored for a long time, and the purple on the back of printed materials will penetrate into other colors printed below, Therefore, if users want to print on both sides, they must consider the permeability of color, and select impermeable purple for printing to avoid loss. Other colors matched with 01 purple also have permeability.

印刷前的选购薄膜及印刷后的附着力。

Film before printing and adhesion after printing.

1、购买薄膜必 须选用经过电子处理的薄膜，薄膜的表面张力必 须达到38达因(指表印)，用电晕测试笔来测检，因薄膜在生产时(指印刷膜)虽经电子处理，但薄膜处理效果会随存放时间延长呈指数规律消退，消退速度与存放的环境温度、原料、薄膜厚度等有关，存放的环境温度高，消退速度快，薄膜含有添加剂如滑剂、增塑剂，抗静电剂的消退速度比无添加剂的更快，现很多印刷厂都能自行吹膜，并进行电子处理，但由于未能掌握好处理程序，处理间隙(1-2mm之间)，处理电压(1-1.5万伏)等，使印刷后出现脱色、渗透、粘连、分切困难及使用时不容易揭开等现象，通常这种情况用测试笔一划就可分析出来，所以购膜或吹膜时一定要注意。

1. Electronic treated films must be selected for the purchase of films, and the surface tension of the films must reach 38 dyne (referring to surface printing). The corona test pen shall be used for inspection. Although the films (referring to printed films) are electronically treated during production, the film treatment effect will fade exponentially with the extension of storage time, and the fading speed is related to the storage ambient temperature, raw materials, film thickness, etc, The environmental temperature for storage is high and the fading speed is fast. The film contains additives such as sliding agent, plasticizer and antistatic agent. At present, many printing plants can blow the film by themselves and conduct electronic processing. However, due to the failure to master the processing procedures, the processing gap (between 1-2mm) and processing voltage (10000-15000 V), decolorization, penetration, adhesion, etc. occur after printing It is difficult to cut and it is not easy to uncover during use. Usually, this situation can be analyzed with a stroke of the test pen, so you must pay attention to when purchasing or blowing film.

2、印刷厂测检印刷品的附着力习惯在机器上进行，即一边印刷一边用胶粘带测检，其实这是不科学的，因为油墨还未彻干，附着力的测检在印刷后8小时进行。

2. In fact, this is unscientific, because the ink is not completely dry, and the measurement and inspection of adhesion is carried out 8 hours after printing.