Printing common paper introduction

Newsprint, commonly known as white paper , is characterized by its loose and porous structure, certain mechanical strength, and good absorbability. It allows ink to penetrate in a short period of time and is not sticky when folded. It is used to print newspapers on high-speed rotary machines. General books. The ration of newsprint is 51 g/m2, the width of reel newsprint is 1572 mm, 1562 mm, 787 mm, and 781 mm; and the plane size of planed paper is 787 mm and w1092 mm. The adaptability of newsprint printing is opaque, but the whiteness is low, and the smoothness of the surface is different. When printing pictures, coarser meshes should be used, and yellowish and brittle after daylight. It is not suitable for long-term preservation.

Boxboard, also known as hemp board, is a relatively rigid cardboard box used for shipping books, department stores, radios, televisions, machine parts and food. The basis weight is 200 g/m2, 310 g/m2, 420 g/m2 and 530 g/m2. The surface is smooth and mechanically strong.

Art paper, also known as coated paper, the base paper is coated with a layer of calcium carbonate or kaolin, a binder and the like dubbed white paint, printing paper advanced calendering after drying made. Due to its fine whiteness, high smoothness and gloss, and moderate oil absorption, it is suitable for copper plate printing or offset printing, printing color or monochrome pictorials, pictures, calendars, maps, books and magazines as well as packaging and printing paper. It is divided into single-side coating and double-side coating. Two of them are divided into No. 1, No. 2, No. 3, and the basis weight is 80 g/m2 to 250 g/m2. Coated paper requires a high coating strength, does not fall out of powder, and can be used for fine mesh printing of 60 lines/cm or more.

Offset paper, formerly known as "Dowlin Paper, " is a type of paper used for offset printing . Suitable for printing monochrome or multi-colored book covers, texts, inserts, pictorials, maps, posters, color labels, and various packaging items. Offset printing paper is divided into No. 1, No. 1 and No. 2 with a basis weight of 70 g/m2 to 150 g/m2. Pulp has high strength and printability. Offset printing is a relatively high-grade book printing paper, which requires high contrast, flexibility, and surface strength. Acidity and alkalinity should also be close to neutral or slightly alkaline, so as not to affect the printing paper. The quantitative amount is 40 g/sq. M to 80 g/m2. In recent years, it has also succeeded in trial production of low-quantitative offset newsprint paper and offset book paper for use in offset printing paper and books.

Letterpress Paper A type of paper that is suitable for letterpress printing of various books, stationery, and magazine texts. The basis weight is 52 g/m2 and 60/m2. There are two kinds of webs and flat papers. The smoothness is 30 meters and the opacity is not less than 88%. Toppan printing paper is a widely used book paper. It is slightly smoother than newsprint and has a longer shelf life. However, it is prone to linting up, and is not suitable for printing books and journals using offset printing. This paper is easy to write.

Grass cardboard, also known as yellow cardboard or horse dung paper, is a yellow packaging board. It is mainly used for the packaging of merchandise, the lining of the bookcases and bookcase books. The basis weight is 200 g/m2 to 860 g/m2. Commonly used are 420 grams on the 8th, 530 grams on the 10th, and 640 grams on the 12th. Grass paperboard requires strong and firm quality, smooth paper surface, and a certain degree of mechanical strength and toughness.

White board, also known as Manila paper, white more advanced packaging boards. It is used for the logo of children's educational caps and logos for stationery, cosmetics, and medicines. The basis weight is 200 g/m2 to 400 g/m2. Thick and uniform, no lint, no powder, toughness, folding is not easy to break. The important materials for binding cardboard bookcases are white paperboard, yellow cardboard boxboard, etc., which are mainly used to make hardcover bookcases and envelopes. The hardcover bookcase, which is made of cardboard, has the advantages of being sturdy, beautiful, and conducive to long-term preservation.

The appearance of Calcium Phthalocyanine Paper is very similar to that of paper. It is resistant to water immersion, non-hygroscopic, non-flammable, has high bursting resistance and tear resistance, and has low production cost. It is strongly kneaded and rolled at 160 degrees. Its thickness is similar to that of card paper. It can also be made into thick cardboard. It has a certain penetration and absorption capacity for ink and can print clear pictures and texts. It can be used for printing book cards, securities, labels, and color prints. It can also be used to make corrugated cardboard boxes and transport foods and goods that are resistant to moisture and oil.

Kraft paper is tough and water-resistant packaging paper, brownish yellow, very versatile, commonly used in the production of paper bags, envelopes, record sets, dossier and sandpaper. The quantification range is 40 g/m2 to 120 g/m2, and there is a difference between single-sided light, double-sided light, and stripes in webs and flat papers. The main quality requirements are flexible and strong, high burst resistance, can withstand greater tension and pressure does not break.

Cellophane, also known as transparent paper, is a transparent, high-grade packaging and decorative paper. It is used for wrapping cereals, food, shirts, cigarettes, cosmetics and other goods. The ration is 30 g/m2. In addition to transparent and colorless, there are golden, pink, green and other colors. Cellophane has airtightness, oil and water, soft and strong, colorless, transparent and glossy. It can be damp-proof and rust-proof after sealing, but it cracks slightly. Due to its high longitudinal strength, paper ropes can be created. Waste glass paper can not be recycled.

The postal seal paper is a kind of extremely thin single-sided optical writing paper with a basis weight of only 20 g/m2. Originally, it was mainly used for sealing paper for postage stamps and insured letters. It is now used in cosmetics, fruit and food packaging and cigarette linings. After printing and waxing, it can be used as a candy wrapper. It can also be used instead of typing paper and copy paper to print documents, subpena or multi-page carbon paper. Thin and strong quality requirements, good transparency, engage in tension, small air permeability.

Chinese calligraphy and painting paper is used for writing and painting with brush pens. There are yuanshuzhi, Xuan paper and burrs. Yuanshu Paper uses bamboo fiber, bark, rags, old hemp, straw, and other plant fibers as raw materials. After soaking, cooking, natural bleaching, and grinding, it is made into paper pulp, and artificially used on bamboo blinds to make paper. After being affixed to the wall of the fire for drying, the paper made is white (or yellowish) in color, uniform and soft, easy to absorb ink, and durable. Xuan paper is a calligraphy paper made from the ebony bark and a small amount of straw pulp. The raw rice paper is suitable for freehand drawing and calligraphy. The cooked rice paper processed by it is suitable for the brushwork, which is white, flexible and durable, and is not easy to change. Insects. It is famous for its origin in Xuancheng, Anhui Province. Burrpaper is a brush writing paper made from tender bamboo as a raw material, with a pale yellow color, and even the history paper is white in color. Both are made by bamboo blinds and used for printing ancient books, rubbings, letterheads, and fan-shaped products.

Glossy paper is a single-sided glossy paper for writing, office and promotional slogans. Can also be used for paper paste boxes, packaging products, printing calendars, letterheads and invoices, etc., a wide range of uses, is a commonly used thin paper. It used to be called office paper or snow lotus paper. Denomination No. 1, No. 1 and No. 2 are three kinds of quantitative quantities ranging from 18 g/m2 to 40 g/m2. Quality requirements for uniform thickness, smooth paper surface, light sizing to facilitate writing, there is a certain water resistance, colored glossy paper, also known as slogan paper, is mainly used to write slogans!

Typing paper is thin paper for typing and copying and is currently used to print documents, tickets or letterhead. Denomination number, No. 1 and No. 2 three grades, quantitative 24 g/m2 to 30 g/m2, commonly used 28 g/m2. It requires a paper thickness of no more than 0.05 mm, consistent thickness, ability to type at one time, multiple pages of writing, strong and smooth paper, and writing with colorless typed paper that is used for printing multi-subpoenas or tickets.

Writing paper is a kind of cultural paper with large consumption. It is suitable for forms, exercises, accounts, records, etc., for writing, with special numbers, No. 1, No. 2, No. 3, and No. 4 , Quantitative 45 g/m2 to 80 g/m2. Quality requirements: color is white, smooth on both sides, texture is tight, and it is not watery when writing.

Gravure paper is used to print a variety of colored prints, periodicals, comics, pictures, stamps, and securities. Its size and size are basically the same as that of newsprint, letterpress and offset paper, and it is also divided into web and flatbed paper. Intaglio paper printing requires higher smoothness and shrinkage, and the whiteness of the paper should be higher, with better smoothness and softness.

Cast coated paper, also known as glass powdered paper, is an advanced coated printing paper with a particularly smooth surface. It is coated on the base paper twice or once in a thick coating (20 to 39 g on one side). When the coating is in a wet state, the coated side is tightly attached to a highly polished chrome-plated drying cylinder and dried. The speed of about 100 meters or less can be obtained, the gloss is about 85, do not need to be calendered. The coated paper is embossed with a pattern roll to make paper. Cast-coated paper is mainly used for printing covers, inserts, and advanced paper boxes, while cloth-patterned paper and chicken skin are used for printing calendars and business cards.

The official name of matt powdered paper is matt copperplate paper. It is observed under sunlight and is less reflective than copperplate paper. The pattern printed with it, though not copperplate paper, is more delicate and more upscale than copperplate paper.