【 Technology 】 Stickers Are Printed in Adhesive Stickers Using Adhesive Paper

【 Technology 】 Stickers are printed in Adhesive Stickers using adhesive paper

In the printing work, we sometimes use print coated with offset paper this material. So today we will introduce the characteristics and use of this material in detail:

As Adhesive Stickers printed matter, it mainly combines plastic film and paper, which becomes a high-quality product integrating paper and plastic, improving the status and quality of paper. Covered with paper mainly uncoated paper, coated paper and white paper board.

Offset paper texture is opaque, scalability is small, smooth, is a better printing paper. Offset paper is the paper used by an offset printing press to print covers, posters, advertisements, trademarks, centerfolds, maps, posters, commodity packaging and the text of books and periodicals. Offset paper is suitable for multi-color printing.

Uncoated paper is divided into double-sided uncoated paper and single-sided uncoated paper, and it is divided into flat paper (sheet paper) and web paper. Double-sided offset paper commonly used quantitative 70, 80, 90, 100, 120g/m2 and other types, single-sided offset paper commonly used quantitative 50, 60, 70, 80g/m2 and other types, moisture content 4% ~ 9%. Plate offset paper 500 for a ream, each ream of paper weight according to the paper quantification and specification.

According to the characteristics of offset printing, the quality and printing suitability of offset paper should meet the following requirements:

(1) High paper strength, good water resistance. Offset printing on the paper tension, the surface strength of the paper is high, the texture is tight, the paper is not allowed to drop powder hair, so as not to cause paste version. Paper strength is insufficient, paper fiber and filler will stick to the surface of the rubber roller in the process of embossing, resulting in poor print quality and blanket fouling. Offset printing has a wetting system, which requires a certain water resistance on the surface of the paper.

(2) paper expansion rate is small, stiffness is large. Paper expansion rate refers to the rate of size change after wetting and drying. Expansion rate is the impact of multi - color overprinting accuracy, and affect the quality of film. Offset printing ink viscosity is larger, if the paper stiffness is not large enough, the paper is not easy to separate from the rubber roller after printing.

(3) The paper surface is smooth and the ink absorption should not be too high. Uncoated paper surface uneven, uneven fiber distribution, will cause text and text imprinting is not strong, the hierarchy is not clear. Offset paper ink absorption is too high, ink in the connection material quickly into the paper, pigment particles deposited on the paper, resulting in poor printing, printing, luster and other quality problems. Offset printing ink mainly by oxidation polymerization conjunctival, pigment particles wrapped and dry, only a small part of the paper absorption and dry.

(4) paper appearance neat, tight texture. Paper appearance should not have wrinkles, streaks, spots, light points, cracks, holes, sand, impurities, such as tight texture, white uniform, sizing and polishing quality is good.