Newsprint is made of mechanical wood pulp (or other chemical pulp), which contains a lot of lignin and other impurities and is not suitable for long-term storage. If the paper is stored for too long, it will turn yellow and brittle, and its water resistance is poor, so it is not suitable for writing. Printing ink or book ink must be used, the viscosity of the ink should not be too high, and the water content of the page must be strictly controlled during lithography. Because the raw materials used are mainly mechanical wood pulp, which contains essential elements and impurities for human body, paper is not suitable for long-term storage and is easy to be damaged.
Mechanical wood pulp, also known as ground wood pulp, is pulp made by grinding fiber raw materials by mechanical methods. It occupies an important position in the paper industry. Low production cost, simple production process, strong ink absorption, high opacity and soft and smooth paper. Suitable for printing requirements. However, due to the short fiber and high content of non-cellulose components, the strength of paper is low. In addition, because most lignin and other non-cellulose in wood have not been removed, the paper produced with it is easy to turn yellow and brittle, and cannot be stored for a long time.
Question 2: What do we know about paper, such as newspaper manuscript paper?
There are typing paper, drawing paper, Xuan paper, writing paper, single-sided writing paper (glossy paper), drawing paper, watercolor paper, sketch paper, charcoal drawing paper, double red paper, striped writing paper, ledger paper, edge paper, historical paper, leather drawing paper, water writing paper, oil painting blank paper, blotting paper and plum red paper.
copy paper
There are tracing paper, stylus wax paper base paper, dry electrostatic copy paper, blueprint base paper, dry diazo photosensitive paper, carbon-free copy paper, typing copy paper, double-low map base paper, electrostatic copy tracing paper, typing wax paper base paper, carbon-free copy paper, typing wax paper base paper, thermal paper, electrostatic plate-making paper and carbon-free copy paper.
toilet paper
There are sanitary napkins, wrinkled toilet paper, diaper paper, thin non-woven fabric, rat killing paper, plaster paper, medical cotton paper, water-soluble medical paper, cotton paper and wet paper towels.
Living paper
There are shoemaking cardboard, woven base paper, paper insoles, black photographic cardboard, tablecloth paper, cloth substitute paper, kitchen paper, art paper, mirror cleaning paper and petticoat paper.
decorative paper
There are decal paper, decal paper backing paper, wax paper, decorative base paper, wax paper base paper, wallpaper base paper, plastic-coated wallpaper, wrinkled base paper, adhesive base paper, plastic decorative panel, gypsum board, base paper, facial paper, ceramic membrane decal paper, ceramic membrane decal paper, metal decal paper, enamel decal paper and so on.
Question 3: What is the paper size of the newspaper? For example, the People's Daily is generally 390mm (width) x540mm (height) (550). The dimensions of large format are generally 390mm (width) x540mm (height), 20mm from left to right, 25mm from top to bottom, x490mm in width and 350mm in height.
Advantages of newspapers:
1, which can be read at any time, without time limitation, and will not miss the information reported at the specified time like TV or radio programs;
2, circulated to each other, the number of readers can be several times that of printing;
Even people with poor reading or understanding ability can spend more time absorbing news from newspapers.
With the rise of Internet, the circulation of online newspapers is stronger than that of traditional printed newspapers.
Disadvantages of newspapers:
1. Due to the deadline and publication factors, it is impossible to provide the latest information and correct it immediately;
2, too much paper brings inconvenience to carrying and circulation;
3. Compared with TV and radio video clips, pictures and words are less powerful and appealing;
4, easy to be polluted by ink dirt.
Question 4: "Teacher, what kind of paper is a newspaper? A newspaper is a newspaper that reports news.
Question 5: What paper is used to process and produce newspapers? . . . . Do you want to know what paper it is made of? Can you see that the following usage helps you? . . . White newspaper is the main paper of newspapers and books. . . . Suitable for newspapers, periodicals, textbooks, comics and other text papers. Newsprint is characterized by: the paper is light and elastic; Good ink absorption ensures that the ink can be better fixed on the paper. After calendering, both sides of the paper are smooth and lint-free, so that the printed matter on both sides is clear and full; Have certain mechanical strength; Good opacity; Suitable for high-speed rotary printing. This kind of paper is made of mechanical wood pulp (or other chemical pulp) and contains a lot of impurities such as lignin, which is not suitable for long-term storage. If the paper is stored for too long, it will turn yellow and brittle, and its water resistance is poor, so it is not suitable for writing. Printing ink or book ink must be used, the viscosity of the ink should not be too high, and the water content of the page must be strictly controlled during lithography.
Weight: (49-52) 2g/m2
Specification of plain paper: 787×1092,850×1168,880×1230.
Web specification: width 787, 1092,1575; The length is about 6000m-8000m.
And painting newspapers
Colored newspapers are thin and smooth, and are used to print pictorial, picture books and posters.
Weight: 65,90, 120 (g/m2)
Specification of plain paper: 690× 960,787×1092
By the way, I wish you a happy Mid-Autumn Festival. . .
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Question 6: How to learn to make new paper with newspapers? Recycled paper is made of waste paper through shredding, decoloring, pulping and other processes. 80% of its raw materials come from recycled waste paper, so it is known as environmentally friendly paper with low energy consumption and light pollution. With the enhancement of people's awareness of environmental protection, recycled paper products are increasingly recognized and welcomed by people.
Materials: toilet paper, dead leaves (onion skin and other special skins), rags, old newspapers, juicer, 2 1 silk tray, wooden frame, bucket, mulberry fruit or other dyed plants.
Step 1: shred the toilet paper slightly, add water and pour it into the juicer, and break it into pulp. It doesn't take long, about 30 seconds. (If recycled copy paper is used, first crush it with a shredder and soak it for more than half a day. )
Step 2: Shred onion skin or fallen leaves, then add in and stir.
Step 3: Add mulberry or other dyed plants and mix well. (At this time, the color is dark, and the color of the work will fade a lot after molding. )
Step 4: The silk is below, the wooden frame is above, and the rag is below. Pour the stirred pulp into it. At this time, you can add relatively complete fallen leaves (or make vein specimens before class) to make simple textures.
Step 5: dry in the shade for three or four days, and then carefully take it off, and it becomes a self-made recycled paper.
Experience sharing:
* When the inconspicuous onion skin is dried in the shade, it will gradually release brownish yellow and naturally mix with the pulp. The effect is amazing.
The red color of mulberries is amazing. To control the addition, it is best to soak the fruit in water and squeeze it out in advance to remove the pigment to avoid the fruit particles mixing together.
* You can use dyed pulp and undyed pulp and pour them into the silk board at the same time. Don't stir, let it spread and blend naturally. The effect is unique.
* Don't move before you do it; If there is a hole, you can make a small amount of slurry to make it up the next day, and it will still be well combined.
* After removal, the surface is slightly concave and convex, with natural touch. If you want to be neat, you can flatten it with an iron at low temperature, and you must not operate it on the silk board.
* Dead leaves are preferred. If green leaves are used, they will fade to an ugly dark brown.
Question 7: What is the classification of newspaper paper size? Positive degree 16 (185x260)
Generosity 16 (2 10x285)
What is the unit of "openness"?
Open as much paper as possible.
For example, 16K means all 16 sheets and two sheets in folio.
How big is the first drive?
Full opening positive degree: 780 x 1080.
Generosity: 880 x 1 180
Printing paper specification
The so-called opening number means cutting into several parts. For example, an 8-size piece of paper is 1/8 (cut three times). Before designing, the paper size should be selected first, because the printing machine can only use several kinds of paper (generally fully open and fully open), and then cut it into the required size by the machine after printing once, so don't use special specifications other than the following table if it's all right, so as to avoid paper printing dissatisfaction and waste of space.
Because the machine grabs the paper and moves it, the edge of the paper cannot be printed, so the original size of the paper will be larger than the actual size, and the blank part of the edge will be cut off after printing, so there will be a difference between the full size and the cut size. If the poster is intentionally left blank, you can choose not to cut it.
Open size full size (mm) cut size (mm) plain paper
Open b11091x7871042x75/wall newspaper.
Folio (half-opened) B2 787 X 545 75 1 X 52 1 poster
3 open 787 X 363 75 1 X 345
4 open B3 545 X 393 52 1 X 375
5 Open 454 X 3 18 424 X 303.
8 Opening B4 393 X 272 375 X 260
16 B5272x196 260x187 26-hole loose-leaf book.
32 open b 6196 x136187 x130.
64 kB7136 x 98130 x 93
Juquankai A 1 872 X 62 1 842 X 594 poster
Chrysanthemum folio A2 62 1 X 436 594 X 42 1
Ju 3 kai 62 1 X 290 594 X 280
Chrysanthemum 4 blooms A3 436 X 3 10 42 1 X 297.
Chrysanthemum 8 opens a 4310x218297x210 copy paper.
Ju 16 open A5218x155210x148 manually.
Ju 32 kai a155 x109148 x105
Chrysanthemum 64 blooms A7 109 X 77 105 X 74
The general process of offset printing:
Design and drawing → finalize OK→ output film → make PS version → print by computer → each post-printing process → put finished products into storage or ship.
Some sizes
General standard size: "The specific situation depends on the actual needs"
Three-fold advertising standard size A4)2 10mm×285mm
General brochure standard size a4) 210mm x 285mm
Standard size of document envelope: 220mm x 305mm.
Poster: Standard size: 540mm x 380mm.
Standard size of national flag: 8 carats 376 mm x 265mm 4 carats 540 mm x 380 mm.
Handbag: standard size: 400 mm x 285mm x 80 mm.
Note: standard size:185mm x 260mm210mm x 285mm.
Business card: 90mmX55mm
envelope
1No. 165x 102
No.2 176X 1 10
No.3 176X 125
No.4 208X 1 10
No.5 220X 1 10
No.6 230X 120
No.7 230X 160
No.8 309X 120
No.9 324X229
10 458X324
There are many kinds of printed matter, and different printed matter often needs different kinds of paper. Here are some varieties and specifications of commonly used printing paper.
1. letterpress paper
Letterpress paper is the main paper for letterpress printing books and magazines. Letterpress paper is made of paper ... >>
Question 8: Is the newspaper paper size A3 or A4? The expanded newspaper size is A2, and the closed newspaper size is A3.
Question 9: What's the difference between 9:PP paper and posters? Generally speaking, posters include some PP synthetic paper.
PP refers to polypropylene, which is called polypropylene in English. PP paper is a roll paper based on PP. After surface printing and coating, it can be directly printed with water-based or weak solvents or other inks. It can be used to post and display advertising pictures, and it can also be pasted with self-adhesive on the back for easy use. Mainly used for advertising printing.
In addition to PP substrate, there are also base papers, such as coated paper or matt paper. These papers are mainly offset printing technology, suitable for mass production. Of course, some base paper can be processed into * * * now.
Simply put, the poster covers part of PP paper.