Handmade box gift box printing gift box printing _ _ Zhangmutou printing plant in Dongguan

 1. coated white paper yellowing formation mechanism of the latest research results show that the gift box printing, cardboard yellowing during storage and after exposure to sunlight, cardboard surface material reacts with oxygen in the air, changing the chemical structure of the surface material , thus affecting the human visual effects. The degree of oxidation determines the severity of yellowed. Oxidation process is mainly due to the promotion of the role of the following three factors: ① high temperature, ② UV, ③pH value. 2. Factors that affect coated white paper yellowing of composition analysis from the oxidation process of promoting factors and coated paperboard material impact coated white paper yellowing has the following main aspects: coated white paper paper, optical brighteners, toning pigments, coating adhesives. The film is generally free of regulation identifies the line pull output, but if gripper tip and drag encountered situations are blank, carton printing position will bring great inconvenience. In this regard, it is necessary to produce a pull gauge marking line on the film. Those who do not need mounted corrugated cardboard packing boxes, pull gauge marking line produced by the body at the site; need mounted corrugated cardboard carton packaging, marking line produced in compliance pull outward site. Ink film thickness is the main factor affecting the print gloss. After the ink absorption maximum paper binders, the remaining link material remains in the ink film, which can effectively improve the print gloss. Ink film thicker, more cosmetic gift box printing the remaining binders, more conducive to improving print gloss. The study found: Gloss ink film thickness with increasing trend, due to a different paper vary. Figure 1 is the same as printing inks versus resultant print gloss and ink film thickness on four different paper. Seen from the figure, although the same product gift box printing ink, but print glossy paper formed with different ink film thickness and the trends are different. High gloss coated paper while the ink film is thin, its print glossy ink film thickness increases with the decrease, which is due to the ink film obscures the paper itself original high gloss, glossy ink film itself but also due to the formation of the paper absorption decreases. Ink film thickness increases, the paper itself original high gloss, the harder it is reflected through the ink film. When the ink film thickness of 1.5μm toy gift box printing, paper, binders fundamental absorption saturation. After that, with the continued increase in the ink film thickness, binders retain more luster it continues to increase. Cardboard printed glossy paint thinner when rapidly increasing with the increase of the ink in the ink film thickness of the film, after the ink film thickness to 3.8μm, is no longer with increasing gloss ink film thickness increases. But no matter what kind of paper, glossy ink film thickness increases with the increase of the amount should have certain limits. Handmade box gift box printing gift box printing _ _ Zhangmutou printing plant in Dongguan, Dongguan Chang Ping from beyond the packing plant products provided. Dongguan Changping beyond packaging products plant (www.dgcyp.com) strong, credible, in Dongguan, Guangdong paper printing industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead beyond the printing and you hand into the brilliant, for a better future!