Printing paper common sense:

Coated paper

Pigments, adhesives and auxiliary materials are made into paint, which is coated on the surface of the cardboard through special equipment. After drying and calendering, a smooth and dense coating is formed on the paper surface to obtain coated paper with good surface properties and printing performance. Mostly used in cigarette boxes, labels, cartons, etc.

Offset paper

Mainly single-sided offset printing paper. The paper surface is white and smooth, but its whiteness, tightness and smoothness are lower than those of coated paper. Super calendered offset paper has better smoothness and tightness than ordinary calendered offset paper. It can be printed with text and patterns and can be pasted with yellow board paper to form a carton.

Trademark paper

Trademark paper has a white surface and good printing performance, and is used to make trademark signs.

Kraft paper

Including boxboard paper, cement bag paper, high-strength corrugated paper, and brown cardboard. Kraft paper is a high-strength packaging paper made of softwood sulfate natural pulp with a tough texture, high strength, and a yellow-brown surface. In terms of appearance, it can be divided into single-sided gloss, double-sided gloss, striped, and non-striped varieties. Quality requirements are slightly different. Kraft paper is mainly used to make small paper bags, document bags, and inner packaging of industrial products, textiles, and daily necessities. Kraft paper is divided into three grades: U, A, and B.

Corrugated paper

Corrugated paper is pressed into a corrugated shape during the production process. After being made into corrugated cardboard, it will provide cardboard elasticity, flat compression strength, and affect vertical compression strength and other properties. For corrugated paper, the paper surface should be flat and the thickness should be consistent. There should be no paper defects such as wrinkles, rips, and holes, otherwise it will increase the number of breakages during the production process and affect product quality.

Paper bag paper

Paper bag paper is similar to kraft paper and is mostly produced from softwood sulfate pulp. It is also produced in China by mixing some bamboo pulp, cotton stalk pulp and rag pulp. Therefore, paper bag paper has high mechanical strength and is generally used to make packaging bags for cement, pesticides, fertilizers and other industrial products. In order to meet the requirements of filling, paper bag paper requires a certain degree of air permeability and large elongation.

Cellophane

Cellophane is a widely used lining paper and decorative packaging paper. Its transparency allows people to see the goods inside at a glance. After the surface is plastic-coated, it has properties such as moisture-proof, water-tight, air-tight, and heat-sealing, which plays a good role in protecting the goods. Compared with ordinary plastic films, it has the advantages of being static-free, dust-proof, and has good kink resistance. Cellophane comes in white, colored, etc.

White cardboard

It is a kind of flat paper with smooth surface and firm texture.

White cardboard

White cardboard is divided into double-sided white cardboard and single-sided white cardboard. Double-sided white cardboard is only used for high-end product packaging. Most general cartons use single-sided white cardboard. Such as making outer packaging boxes for cigarettes, cosmetics, medicines, food, stationery and other commodities.

Composite paper

Laminate paper, cardboard and other plastics, aluminum foil, cloth, etc. with adhesives to obtain composite processed paper. Composite processed paper can not only improve the appearance performance and strength of paper and cardboard, but also improve the waterproof, moisture-proof, oil-resistant, air-tight and fragrance-preserving properties. It can also obtain heat sealing, light blocking, heat resistance, etc. The methods for producing composite paper include wet method, dry method, hot melt and extrusion compounding.

Printing paper

Paper specially used for printing. According to the use, it can be divided into: newsprint, book paper, cover paper, bond paper, etc. According to different printing methods, it can be divided into letterpress printing paper, gravure printing paper, offset printing paper, etc.

Color printing paper

Mainly includes color printing cartons and color printing cartons.

Moisture-proof paper

It is a packaging paper made by coating asphalt between two layers of base paper. It is mainly used for moisture-proof packaging of cigarettes and can also be used for fruit packaging. Moisture-proof paper has a certain moisture-proof ability, and its moisture-proof rate is at least 15%. Good moisture-proof paper is evenly coated, firmly bonded, and has no paper layer cracking or asphalt penetration. The heat resistance is not less than 85 degrees and should not be There is a smell, so as not to affect the quality of cigarettes, but this paper is no longer used to package cigarettes.

Paper products

Including paper products, paper product printing, paper product packaging machinery, paper product processing, and packaging paper products.

Packaging boxes

Including pharmaceutical packaging boxes, silk packaging boxes, color gift packaging boxes, roof-shaped milk packaging boxes, and paper-plastic color packaging boxes.

Fine corrugated board

Also known as E-type corrugated cardboard, it is thin and has good stiffness. It is generally used to make cartons as sales packaging; E-type corrugated cardboard can also be used alone as ampoule buffer. Paper separator.

Yellow cardboard

Yellow cardboard is also called straw cardboard. It is yellow in color and is mainly used for packaging shoes, hardware products and some cheap goods in ordinary cartons. It is printed with a layer of exquisite After label paper is laminated, it is also used to package clothing and knitwear. The raw materials for producing yellow cardboard are 100% natural lime straw pulp or wheat straw pulp and waste paper.

Cardboard

Cardboard is used as the surface layer of corrugated cardboard. After it is made into a box, it becomes the surface of the carton. Therefore, the cardboard is required to have high pressure resistance and folding resistance. , tensile strength, abrasion resistance, puncture resistance and other strength properties and a certain degree of water resistance. The paper is strong and tough, and it must also have good appearance properties and printability.

Shopping bag

Includes paper shopping bags with handles. Shopping bags require high strength and must be printed. They are generally made of kraft paper with reinforcing ribs on the outside of the handle. They are also made of high-density art coated paper (coated offset printing paper). They are beautiful and elegant after color printing and decoration, and can be repeated Used multiple times.

Composite bags

In order to prevent moisture when using multi-layer paper bags, plastic film or asphalt moisture-proof paper is added to the middle layer of the paper bag.

Cement bags

Including composite cement bags, plastic woven cement bags, and cement bag paper.

Adhesive tape

It uses paper, cloth, and plastic film as base materials, and then evenly coats wet adhesive on the above base materials to make paper adhesive tapes , cloth adhesive tape, heat-sensitive adhesive tape, pressure-sensitive adhesive tape, are composed of three parts: base material, adhesive and release agent.

Composite can

Compound can is a new type of packaging product that has developed rapidly in recent years. It is made of cardboard, plastic film, and aluminum foil rolled into a cylinder in a certain manner, and then sealed with a metal or plastic cover to make a composite tank with good barrier properties, water resistance and oil resistance. It is widely used for food, grease and other paste and liquid materials. Packaging, replacing metal and glass jars, facilitates waste disposal and reduces packaging costs.

Pulp molding

Including egg trays and fruit trays. It uses waste paper as raw material, adds some chemicals, and then makes model products of various shapes according to different uses. It is used as eggs, fruits, precision devices, fragile glass, ceramic products, handicrafts, etc. Packaging liner has good cushioning and protection properties. The production of pulp molding technology and equipment has developed rapidly. The basic process is pulp preparation, molding and drying.

Self-adhesive paper

Mostly high-strength white board paper is used as the base paper, and is coated with self-adhesive paper to become self-adhesive paper. Purpose: Self-adhesive paper for printing trademarks and labels.

Colorful packaging

Color includes colored packaging cartons, corrugated color packaging, paper-plastic color packaging boxes, etc.

Glass cardboard

It is a flat paper with glossy surfaces on both sides.

Aluminum foil lining paper

Aluminum foil lining paper: including vacuum aluminized paper. The paper and aluminum foil are combined with an adhesive to make a backing paper. Mostly used for packaging of cigarettes, candy, etc.

Corrugated boxes

Corrugated cardboard is made into corrugated boxes by die-cutting, creasing, nailing or gluing. Corrugated boxes are the most widely used packaging products, and their usage has always been the first among various packaging products. Including calcium plastic corrugated boxes.

Corrugated cardboard

Including honeycomb cardboard. The multi-layer cardboard formed by processing thick paper into a corrugated shape and then bonding it with cardboard in a certain way is called corrugated cardboard.

Other paper packaging

Including pallet boxes, computer paper products, transparent paper packaging, refrigerated boxes, transportation packaging, fertilizer bags, water-coated tape paper, wood pulp, color printing paper, Cigarette paper, paper packaging materials, paper-plastic packaging, calcium plastic board lining, silk packaging, buckle boxes, injection boxes, medical packaging, tar paper, tissue paper, iron lock packaging, soda ash, hemp packaging, plastic envelopes , inner grid matching, clothing pallet, kraft paper bag