Paper, printing supplies is an important part. Paper, printing supplies is an important part. It is good or bad decisions in the process of printing operations and print quality, the stability of pros and cons.
Printing paper can be divided into three categories: newsprint quantitative about (49-52g/m2), mainly used for newspaper printing, manufacture of newsprint due to a large number of pulp lignin and impurities, so the surface of yellowing newsprint, and the not long-term placement, easy crisp print quality times, usually in the news paper for monochrome printing. Offset Paper contains less lignin and impurities, so little flexibility offset paper, the ink absorbent uniform smoothness is good, close opaque texture, whiteness is good, water resistance strong, high print quality, suitable for a relatively fine print printing paper.
The usual quantity in (50-180g/m2). Quantitative coated paper in general (150 ~ 280g/m2), used for high-grade, fine printing paper. There are single-sided coated art paper, double-sided coated paper, matt coated paper, coated paper Gyrosigma divided. The basis of quality is divided into A, B, C third-class. The main ingredient is a copper plate coated base paper and coating. Requirements on the etching base paper thickness uniformity, scalability small, high intensity, good water resistance. Paper must not have spots, wrinkles, such as paper perforation disease, for high-quality coating of paint is a white pigment (eg, kaolin, barium sulfate, etc.), adhesives (such as polyethylene
Enol, casein, etc.) and auxiliary additive composition. Such mobility and a high solids content coatings, thin and evenly through the coating machine brushing in the original paper, and then dried, rolled into the reel drum machine-like, and then sent to the super-pressure-ray machine on the pressure optical finishing the final cut, the election of paper, packaging.
Paper, the printing costs as part of a larger proportion. With the global pulp prices and paper prices are soaring. Makes the printing business, printing costs too high. Select the appropriate paper, the printing process to reduce paper consumption, is to improve the printing industry profits and efficient way.
