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纸张对纸箱的性能对比!

来源:http://www.liufangshun.com/ 时间:2021-03-04 发布人:admin

纸张滑润度与呈色效果的联系

Relationship between paper lubricity and color rendering effect

滑润度是点评纸张表面凹凸程度的技术方针,是标明纸张表面平整、润滑和均匀程度的物理量,即在必定的真空条件下,使必定容积的空气,从必定压力下的纸张测验样表面与润滑玻璃表面之间流过所需求的时间来衡量,其单位用秒标明。秒数越高纸张的滑润度越好。纸张滑润度越好,印刷时纸面与印版间的接触,也就越均匀和无缺,版面(凸版)或橡皮布上的墨层转移也越充分,印品纸箱呈色效果也越好。反之,滑润度差的纸张,油墨转移不均匀,不充分,且纸面临墨量的渗透性强,呈色效果也就差,往往简略使印品墨色发花、发淡。所以,印刷精巧的产品,网线越细、网点直径越小,越应选用滑润度好的纸张进行印刷,这样才可以使原稿再现性好。

Lubricity is the technical guideline to evaluate the degree of concave convex of paper surface. It is the physical quantity to indicate the smoothness, lubrication and uniformity of paper surface. That is to say, under certain vacuum conditions, it is measured by the time required for a certain volume of air to flow between the paper test sample surface and the lubricating glass surface under certain pressure. Its unit is indicated in seconds. The higher the number of seconds, the better the smoothness of the paper. The better the smoothness of the paper, the more even and seamless the contact between the paper surface and the printing plate, the more sufficient the ink transfer on the layout (relief) or blanket, and the better the color rendering effect of the printing carton. On the contrary, the poor smoothness of the paper, ink transfer is not uniform, not sufficient, and the paper is faced with ink permeability, color effect is also poor, often simply make the printing ink color, hair light. Therefore, the finer the mesh line and the smaller the dot diameter are, the better the paper with good lubricity should be selected for printing, so that the reproduction of the original is good.

                  济南包装箱厂

纸张光泽与呈色效果的联系

Relationship between paper luster and color rendering effect

纸张光泽度是指纸张表面的镜面反射程度,用百分率标明。纸张的光泽度越高,其表面越能像镜子似的反射光线,越能显示出鲜亮的外观特性。实际上,纸张表面除了镜面反射外,还存在着漫反射,使纸张光泽度下降。光泽度高的纸张,印品墨色也越美丽,墨色视觉效果也好。可以说,纸张越滑润,光泽度也越高,印品颜色的光泽度也越高。纸张的光泽度和滑润度有着亲近的联系,但光泽度并非滑润度,纸格有光泽的表面,不必定便是滑润的表面。从纸张的光泽度特征来看,依据印件特征选择正真适宜的纸张进行印刷,很有实际意义。如版面以文字为主的书刊文字,宜选用光泽度一般的纸,避免反射,使眼睛长时间看也不至于产生疲乏。而印刷以图版为主的版面,宜选用光泽度高的坐而论道,使印品纸箱墨色均匀、扎实、美丽顺眼。

Paper glossiness refers to the degree of specular reflection on the surface of the paper, which is indicated by percentage. The higher the glossiness of the paper, the more light can be reflected on the surface like a mirror, and the brighter the appearance. In fact, in addition to specular reflection, there is also diffuse reflection on the surface of the paper, which reduces the glossiness of the paper. Glossy paper, printing ink color is more beautiful, ink visual effect is also good. It can be said that the smoother the paper, the higher the glossiness, the higher the glossiness of the print color. Glossiness and smoothness of paper are closely related, but glossiness is not smoothness. The glossy surface of paper grid is not necessarily a smooth surface. From the point of view of the glossiness of paper, it is of practical significance to select the right paper for printing according to the printing characteristics. For example, for books and periodicals whose layout is mainly composed of words, the paper with general glossiness should be selected to avoid reflection, so that the eyes will not be tired after reading for a long time. And printing plate based layout, should choose glossy high sit and talk, make printing carton ink uniform, solid, beautiful and pleasing to the eye.

纸张白度与呈色效果的联系

Relationship between paper whiteness and color rendering effect

纸张白度是指纸张受光照耀后既有全 面反射的才干,又有纸张亮度之称,用百分率标明晰纸张的白度越高,其表面越能使油墨颜色的特性准确体现出来。这是因为白纸要把通过透明墨层减色组成的色光反射回去。所以,白度高的纸张,简直可以反射全部的色光,使印品纸箱墨色美丽顺眼,视觉效果好。而白度低的纸张,因为只吸收部分色光,既不能照实体现明暗部分的反差,又简略形成偏色。如有的出现偏黄,有的出现偏红,有的出现偏绿,还有的出现偏蓝等等。当纸张本身偏色时,纸面上所印的颜色便是油墨和纸张两者归纳呈色的效果了,这样必然会出现一些偏色情况,依据这一情况,印刷时有必要对纸张的白度和偏色情况对照原稿做多元化的剖析,通过采纳恰当的方法抵达纠正偏色的意图。如当纸张色泽偏黄时,就不宜选用深黄,孔雀蓝和大红等色相的油墨印刷,也便是说,应依据纸色特征,正确选用油墨来消除偏色。另一方面,可通过调墨工艺来纠正色偏。

The whiteness of paper refers to the ability of comprehensive reflection and brightness of paper after being illuminated by light. The higher the whiteness of paper is marked by percentage, the more accurate its surface can reflect the characteristics of ink color. This is because the white paper through the transparent ink layer to reduce the composition of color light reflection back. Therefore, the high whiteness of the paper, it can reflect all the color, so that printing carton ink beautiful and pleasing to the eye, good visual effect. And the paper with low whiteness, because it only absorbs part of the chromatic light, it can not reflect the contrast of light and dark, but also form partial color. Such as some appear yellow, some appear red, some appear green, some appear blue and so on. When the paper itself is biased, the color printed on the paper surface is the effect of both ink and paper. In this way, there will inevitably be some color deviation. According to this situation, it is necessary to analyze the whiteness and color deviation of the paper according to the original, and correct the color deviation by adopting appropriate methods. For example, when the paper color is yellow, it is not suitable to use dark yellow, malachite blue and bright red ink printing, that is to say, according to the characteristics of paper color, the correct selection of ink to eliminate color deviation. On the other hand, color deviation can be corrected by inking process.