What are the uses and characteristics of paper? What are the uses of paper?

According to the use of paper, it can be divided into: packaging paper, printing paper, industrial paper, office, cultural paper, household paper and special paper.

1. Printing paper - in the printing paper, there are papers with different properties and characteristics, such as newsprint, letterpress printing paper, offset printing paper.

Offset printing coated paper, dictionary paper, floor paper, sea paper, gravure printing paper, weekly newspaper, drawing newspaper, whiteboard paper, written paper, etc.

2. Newsprint - mainly used for printing newspapers and letterpress books, its paper is soft, rich in good elastoplasticity, strong ink absorption, ink can be fixed on the paper surface quickly, the paper surface is pressed successively by a calender, smooth on both sides, not easy to fluff, and the printing on both sides is relatively clear and real.

It has a certain mechanical strength, can be suitable for high-speed rotary printing, and has good opacity. Because the raw materials used are mainly mechanical wood pulp, containing essential elements and impurities, the paper is not suitable for long-term storage, the paper is easy to yellow and brittle, the paper has strong absorption, poor water resistance, and the paper is easy to break.

3. Printing paper - mainly used by letterpress printing press to print anthologies, classic works, general books, textbooks, magazines, etc. Its characteristics are similar to newsprint, the quality is better than newsprint, the smoothness, water resistance, and whiteness of the paper are better than newsprint, and the ink absorption ability is not as good as newsprint, but the ink absorption is uniform.

4. Offset printing paper - mainly used for lithographic printing of color pictorials, albums, posters, color trademarks and some high-end publications.

5. Offset paper.

There are single-sided offset paper and double-sided offset paper, and single-sided bite paper is often used for color posters, cigarette boxes, trademarks, etc. Double-sided offset paper is used for printing**, illustrations, maps, etc.

6. Offset printing coated paper - also known as coated paper.

It is on the paper surface of the paint base paper, coated with a layer of inorganic paint, and then made by super calendering, the paper surface is smooth, the whiteness is higher, and it is specially used for offset printing monochrome or multi-color art, illustrations, pictorials, albums, commodity trademarks, product samples, calendars, etc.

Writing, wiping dirty, printing, etc.; Specially: thin, lightweight, easy to carry.

Paper can be used for cleaning, writing, packaging items, decoration, and as a medium for printing, such as:Printer paper, carbon paper, toilet paper, tissue paper, etc. Paper is usedPlant fibersI produce it, and I can fold it freely to write a sheet.

Paper is widely spread, generally used by people, papermaking technology is further improved, papermaking area is also concentrated in Luoyang, Henan Province before the Jin Dynasty and gradually spread to Vietnam, Shu, Shao, Yang and Anhui, Jiangxi and other places, output, quality is increasing day by day. The raw materials for papermaking are also diversified, and there are many types of paper. Such as bamboo curtain paper, the paper surface has obvious lines, and the paper is tight and thin.

There is rattan paper made from rattan bark.

Paper has to be manufactured

In order to prolong the life of paper, Jin Shi has invented a new technology of dyeing paper, that is, boiling juice from yellow tillers, dipping and dyeing paper, some write first and then dye, and some first dye and then write. The dyed paper is called dyed paper, which is naturally yellow, so it is also called jute paper. Yellow paper has the function of insect control and mothproofing.

By the Jin Dynasty (4th century), paper had finally replaced silk slips as the main writing material. Cai Lun played a great role in promoting the production of hemp paper and leather paper, although he was not a papermaker.

inventors, but their historical position as technological innovators and promoters of organizations should be recognized.

In the 8th century, paper was widely used in China, and in the following centuries, China exported paper to various parts of Asia, and strictly guarded the secrecy of papermaking. 751 AD, Tang Dynasty and the Arab Empire.

There was a clash in which the Arabs captured several Chinese papermakers. It didn't take long for the paper industry to be in Samarkand.

and Baghdad arose.

In this way, papermaking technology gradually became popular in the Arab world.

It spread everywhere, where paper began to be widely used, and then spread to North America and Europe through the Arab countries.

According to historical records, more than 1,000 years after Cai Lun invented papermaking, the first paper mill was established in Europe. Although the modern paper industry has been very developed, its basic principle is still the same as Cai Lun papermaking.

The method is the same. Seven-eight-tenths of the raw materials for papermaking have been replaced by wood pulp, but the raw materials used to make high-grade printing paper, cigarette paper, rice paper and typed wax paper are still not the rags, bark, hemp heads, waste fish nets and other raw materials used by Cai Lun.

1. Letterpress printing paper

Referred to as letterpress paper, the product packaging form is divided into rolls and lithographs. Letterpress paper weighs from 50 grams to 80 grams per square meter. There are three types of product numbers: special number, No. 1 and No. 2.

Special and No. 1 letterpress paper is used for printing high-grade books, and No. 2 letterpress paper is mainly used for printing general books, textbooks, and periodicals.

2. Newsprint

Also known as white newspaper, the packaging form is also divided into rolls and lithography. The amount of newsprint is about 51 grams, and it is mainly used for printing newspapers and periodicals.

3. Offset printing paper

Referred to as offset paper, the quantitative amount is 60-180 grams, and there are double-sided offset paper and single-sided offset paper. Special number, No. 1 double-sided offset paper for printing advanced color offset printing products; No. 2 double-sided offset paper grams for printing general color prints; Single-sided offset paper is mainly used for printing and posting posters and New Year's pictures.

4. Coated paper

Coated paper is made by applying a layer of coating liquid to the base paper and making it by super calendering. The quantitative amount is 90-250 grams, and there are double-sided coated and single-sided coated paper. There are three kinds of product numbers: special number, No. 1 and No. 2.

Special coated paper is used for printing delicate products with network cables of more than 150 grams; No. 1 coated paper is used for printing 120-150 network cable products; No. 2 coated paper can print products with network cables below 120 grams. Coated paper is not resistant to folding, and once creases appear, it is extremely difficult to recover.

5. Book cover paper

The quantitative amount is 80-120 grams, which is mainly used for the cover of books and periodicals. The book cover paper is available in a variety of colors to suit the needs of printing a variety of different covers.

Whiteboard paper is a kind of cardboard with a white and smooth front and a gray bottom on the back, which is mainly used for single-sided color printing to make cartons for packaging, or for design and handmade products.

Whiteboard paper is mainly selected as an important material for sales packaging, because the cardboard is thicker, it has a certain cushioning property, so it has a certain protective effect on commodity packaging. High-grade whiteboard paper can achieve a similar effect to coated paper through color printing, and is often used to package daily necessities such as food, medicine, cosmetics, toys, and household appliances, and play a role in beautification and publicity. It can also be used as a tag, lining plate and bottom bracket for blister packaging of goods.

Whiteboard paper is also often used by designers to make composite containers with aluminum foil and plastic, replacing metal containers and glass containers for packaging materials, food, milk, etc.

The design of whiteboard paper as the packaging material of goods, pay attention to the whiteboard paper finish and surface smoothness compared with high-grade coated paper has a certain gap, the image of the dot accuracy should not be too high, so as not to cause poor dot transfer, layer loss. Compared with high-grade cardboard, whiteboard paper is relatively rough, therefore, high-end goods with relatively small specifications and sizes are generally not suitable for whiteboard paper, especially high-end drugs and cosmetics should not use whiteboard paper for commodity packaging, but should choose homogeneous cardboard paper to improve the grade of products.

Whiteboard paper is made of batter and each layer of base batter on a multi-screen multi-dryer paper machine or a long screen mixed cardboard machine. The pulp is generally divided into batter (surface layer), two layers, three layers, and four layers, and the fiber ratio of each layer of pulp is different, and the fiber ratio of each layer of pulp is different according to the quality of the paper made.

The first layer is the surface layer pulp, which requires high whiteness and a certain strength, usually using bleached kraft wood pulp or with partial bleached chemical straw pulp and white paper edge waste paper pulp; The second layer is the lining layer, which plays the role of isolating the surface layer and the core layer, and also requires a certain degree of whiteness, usually with 100 mechanical wood pulp or light-colored waste paper pulp; The third layer is the core layer, which mainly plays the role of filling, in order to increase the thickness of the cardboard, improve the stiffness, generally use mixed waste paper pulp or straw pulp, this layer is the thickest, and the cardboard with high quantitative weight is often hung several times in several mesh grooves; The fourth layer is the bottom layer, which has the function of improving the appearance of the cardboard, improving the strength and preventing curling, usually with a high rate of pulp or better waste paper pulp as raw materials, and the bottom color of the whiteboard paper is gray, and other bottom colors can also be produced as required.

The uses of paper are:

It can be used for cleaning, writing, packaging items, decoration, and as a carrier for printing, such as printing paper, carbon paper, toilet paper, tissue paper, etc. Paper is made of plant fibers and can be folded arbitrarily into sheets for writing. Due to the invention and popularization of paper, human beings can no longer use clay, stone, wood, pottery, metal and other materials to record words or pictures, and a large amount of information in ancient times has been disseminated and preserved.

Classification of paper:

1) According to the production method, it is divided into handmade paper and machine-made paper. Handmade paper is mainly made by hand, using curtain net frame and manual fishing. It has a soft texture and strong water absorption, which is suitable for ink writing, painting and printing, such as Chinese rice paper.

Its production accounts for a small proportion of the total production of modern paper. Machine-made paper refers to a general term for paper that is produced in a mechanized way, such as printing paper, etc.

2) According to the thickness and weight of the paper, it is divided into paper and cardboard. There is no strict distinction between the two. Generally, those weighing less than 200g per square meter are called paper, and those above are called cardboard.

Cardboard accounts for about 40 50% of the total paper output, and is mainly used for commodity packaging, such as cardboard for packaging.

3) According to the use, it can be divided into: packaging paper, printing paper, industrial paper, office, cultural paper, household paper and special paper.

Summary. The characteristics of paper: light weight, strong water absorption, low hardness, poor flexibility, easy to fold, not easy to conduct. At the same time, there are various classifications of paper, which can be divided into printing paper, packaging paper, industrial paper, office paper, household paper and special paper according to its use.

Types of paper Characteristics Uses.

Paper: 1. Use: It can be used for painting, printing books and newspapers, packaging, etc.

2. Classification: such as printing paper, carbon paper, toilet paper, facial paper, etc. 3. Features:

It can be folded arbitrarily for writing, and because of the invention and popularization of paper, human beings can no longer use mud, stone, wood, pottery, metal and other materials to record words or pictures, and also make a large amount of ancient information be disseminated and preserved.

The characteristics of paper: light weight, strong water absorption, low hardness, poor flexibility, easy to fold, not easy to conduct. At the same time, there are various classifications of paper, which can be divided into printing paper, packaging paper, industrial paper, office paper, household paper and special paper according to its use.

Paper has many uses, including writing, packaging, printing books and newspapers, etc.

Paper is a type of sheet made from plant fibers. Paper is a general term for paper, and paper is calculated in sheets, so it is called paper. Paper can generally be divided into coated paper, copy paper, newsprint, board paper, book cover paper, offset printing paper, etc.

Paper is one of the four major elements of printing, and there are about two types of paper used in printing and publishing in China, namely raw material paper and recycled paper.

Like recycled paper in a broad sense, it is the use of waste paper to be treated, and made into recycled pulp, to replace the log pulp produced by the paper, can be called recycled paper, such as industrial use is waste kraft cartons as the main production raw materials, the bottom layer of general cardboard gray is mixed paper as the main production raw material, these raw materials can be called industrial recycled paper.

Different paper has different uses, and here are the uses of various types of paper towels:

1. Facial tissues.

Facial tissues and napkins are specially used to clean the face, which is soft and skin-friendly, with the highest hygiene requirements, and it is safer to wipe the mouth and face. In addition, the facial tissue has good toughness after soaking, is not easy to break, and the confetti is not easy to remain on the face when wiping sweat.

2. Toilet paper.

Toilet paper is moderately soft and is mainly used when going to the toilet. Some friends are particularly particular about using facial tissues instead of toilet paper, which is also wrong. Facial tissues are too tough, they are easy to clog the toilet when used to replace toilet paper, and they are time-consuming and laborious to clean up, so it is best not to replace each other!

3. Wet wipes.

Wet wipes contain certain sterilization ingredients, and when it is inconvenient to wash your hands when you go out, you can effectively clean and sterilize them with wet wipes. Wet wipes are best not used to wipe the face, the facial skin is fragile, and the bactericidal ingredients in it can easily cause itching, redness and swelling.

4. Kitchen paper.

Kitchen paper has good water and oil absorption, and the paper is larger and thicker, which is very suitable for cleaning kitchen utensils, glass windows, mirrors, tables, etc., and is a veritable cleaning expert. In addition to household cleaning, kitchen paper can also clean food, absorb moisture and grease from the surface of food before cooking, and make the ingredients fresher and cleaner.

Safety paper. 1. Always have a variety of papers at home.

Many people buy a lot of paper towels at home when they encounter a supermarket discount, and use it to wipe their faces and clean them when they go to the toilet, which is very unscientific. It is best not to replace the functions of various papers, and the paper that has been stored for a long time is not clean. Toilet paper and facial tissues are used more, you can buy more appropriately, kitchen paper and wet wipes are not used much, and it is enough to buy them once every 1-2 months.

Use it up in a month.

Paper hygiene must be paid attention to, try not to buy bulk paper towels when buying, and it is best to use up the paper towels within 1 month after opening. Toilet paper and facial tissues should be placed in a tissue box to reduce contact with the air and prevent the growth of bacteria from moisture.

3. Wet wipes are not a substitute for hand washing.

If you use wet wipes, you still need to wash your hands. The liquid content of wet wipes is generally 80%, the main components are water and fungicide, in order to make the bactericidal solution effectively dissolved in water for a long time, some chemical agents will be added to the wet wipe. While these chemicals do not cause serious effects on **, they can remain on your hands.

Therefore, the best way to disinfect is to wash your hands with soap and rinse with running water.