General introduction to domestic printing paper

Coated paper

Paints, adhesives and auxiliary materials are made into coatings and coated on the surface of cardboard by special equipment. After drying and calendering, a layer of smooth and dense coating is formed on the surface of the paper to obtain copper plates with good surface properties and good printing performance. paper. Used in cigarette cases, labels, paper boxes, etc.

The most commonly used paper, the surface gloss is good, suitable for a variety of color effects.

Offset paper

Mainly single-sided offset printing paper. Paper is white and smooth, but whiteness, tightness and smoothness are lower than coated paper. Super-calendered offset paper, its smoothness and tightness is better than ordinary calendered offset paper, printed with text, and can be pasted with yellow cardboard into a carton.

Label paper

The paper surface is white and the printing performance is good. It is used to make trademark marks.

Kraft paper

Including linerboard, cement bags, high-strength corrugated paper, brown cardboard.

Kraft paper is a high-strength wrapper made of softwood, sulphate, and brown with strong texture, and can be divided into single-sided light, double-sided light, striped, and no stripe. The quality requirements are slightly different. Kraft paper is mainly used for the production of small paper bags, document bags and industrial products, textiles, daily necessities inside packaging. Kraft paper is divided into U, A, B3 grades.

corrugated paper

Corrugated paper is pressed into a corrugated shape during the production process. After it is made of corrugated cardboard, it will provide the cardboard with elasticity, flat compressive strength, and affect the properties such as vertical compressive strength. Corrugated paper, paper is flat, the thickness should be the same, can not have wrinkles, cracks and holes and other paper diseases, otherwise increase the production process of breakage failure, affect product quality.

Paper bag paper

Paper bag paper is similar to kraft paper. Most of it is produced from softwood kraft pulp. Domestically, it is also blended with some bamboo pulp, cotton stalk pulp, and broken pulp. Therefore, the paper bag paper has high mechanical strength and is generally used to make cement and pesticides. Fertilizer and other industrial packaging bags. To meet the requirements for filling, paper bags require a certain degree of breathability and greater elongation.

cellophane

Cellophane is a widely used liner and decorative packaging paper. Its transparency makes people look at the contents of the product at a glance. After the plastic surface is coated, it is also moisture-proof, impervious to water, airtight, and heat-sealed. It plays a good role in protecting the product. Compared with ordinary plastic film, it has the advantages of no static electricity, dust, and good kink. Cellophane has white, color and so on.

White cardboard

Is a flat paper, it has a smooth surface, strong texture.

White cardboard

White paperboard is divided into double-sided white paperboard and single-side white paperboard. Double-sided white paperboard is used only for packaging of high-end goods. Generally, single-side white paperboard is used for paperboard, such as the packaging of cigarettes, cosmetics, medicines, food, stationery and other goods. box.

Composite paper

Paper, cardboard and other plastics, aluminum foil, cloth, etc. are laminated with an adhesive to give a composite processed paper. Composite processing paper can not only improve the appearance and strength of paper and paperboard, but also improve the performance of waterproof, moisture-proof, oil-proof, air-tight and fragrant, etc. At the same time, it will also obtain heat-sealing, light-blocking and heat-resistance. The methods for producing composite paper include wet, dry, hot-melt and extrusion composite processes.

Printing paper

Specially used for printing paper. According to use can be divided into: newsprint, books and papers, cover paper, security paper and so on. According to the different printing methods can be divided into letterpress printing paper, gravure printing paper, offset printing paper.

Printing paper

Including color printing cartons, color printing cartons.

Moisture-proof paper

It is a wrapping paper made by coating asphalt between two layers of base paper. It is mainly used for moisture-proof packaging cigarettes and can also be used as fruit packaging. Moisture-proof paper has a certain moisture-proof ability, its moisture-proof rate is at least above 15%, good moisture-proof paper is coated evenly, adhesion is firm, there is no paper layer dehiscence and asphalt penetration phenomenon, heat-resistance is not lower than 85 degrees, and should not be There is odor, so as not to affect the quality of cigarettes, but now the cigarette packaging paper is not used.