1. Some knowledge about paper
Paper In ancient times, ancestors mainly relied on knotting ropes to keep records. Later, characters were gradually invented and oracle bones were used as writing materials.
Later, bamboo and wood chips and silk were discovered and used as writing materials. But because silk was too expensive and bamboo pieces were too heavy, this led to the invention of paper.
According to research, paper production began in my country during the Western Han Dynasty, and paper was widely circulated during the Wei, Jin, Southern and Northern Dynasties. Widely used by people, papermaking technology further improved.
Papermaking raw materials are also diverse. There are many types of paper, such as bamboo curtain paper, rattan paper, fish egg paper... Cai Lun papermaking has a wide range of raw materials. Paper made from rotten fishnets is called net paper, and paper made from rags. The paper is called cloth paper. During the Sui and Tang Dynasties, the famous rice paper was born.
(There is such a legend in Xuanzhou, Anhui Province, the main producing area of ??rice paper: Kong Dan, Cai Lun’s apprentice, was engaged in papermaking in southern Anhui. He always wanted to create a particularly ideal white paper to be used by his master. He came to paint and revise the portrait. But after many attempts, he could not get what he wanted.
Once, he happened to see some sandalwood trees falling next to a mountain stream. They were rotten and whitened by water over time. Later, he finally succeeded in making paper from this bark.
It can be concluded that the use of bark to make rice paper was more popular in the Tang Dynasty. In the Tang Dynasty, yellow paper was dyed. On top of that, wax is evenly applied on the paper to make the paper shiny and beautiful, which is called hard yellow paper.
The papermaking industry continued to develop during the Five Dynasties. Chengxintang paper made in Shezhou was recognized as the best paper until the Northern Song Dynasty. In the Ming and Qing Dynasties, the paper industry flourished and innovated again.
All kinds of paper became popular again. In terms of texture, white paper and elegant colored paper were favored. The colors were mainly bright and quiet, such as the pink wax paper in the Kangxi and Qianlong periods, printed patterns and dyed flowers. Paper, etc., the production of paper had reached a state of perfection by the Qing Dynasty. Papermaking process) Generally, the production of printing paper is divided into two basic processes: pulp and papermaking.
Pulping is to use mechanical methods, chemical methods or a combination of the two methods to dissociate plant fiber raw materials into natural pulp or bleached pulp. Papermaking is the process of combining pulp fibers suspended in water through various processes into paper sheets that meet various requirements.
Paper mills generally need to store enough raw materials for 4 to 6 months, so that the raw materials can undergo natural fermentation during storage to facilitate pulping and ensure continuous production of the paper mill. In the material preparation section, raw materials such as reeds, wheat straw and wood are cut into pieces (for the production of chemical pulp) or wood pieces (for the production of groundwood pulp), and then the small pieces of raw materials are placed in the digester, chemical liquid is added, and steam is used for cooking , boil the raw materials into pulp, or send the wood pieces to a wood grinder to grind into pulp, or they can also be cooked to a certain extent and then ground into pulp.
The paper pulp is then washed with a large amount of clean water, and coarse flakes, knots, stones and sand in the pulp are removed through screening and purification. According to the requirements of the paper type, bleach is used to bleach the pulp to the required whiteness, and then the pulp is beaten using beating equipment.
Then various auxiliary materials such as fillers, gums, and sizing agents to improve the performance of the paper are added to the pulp, and are purified and screened again, and finally sent to the paper machine to undergo water filtration, press dehydration, The drying cylinder is used for drying, calendering, winding, and slitting, rewinding or cutting to produce roll paper and flat paper. If the production is to produce coated printing paper, the middle part needs to be dried or produced into web paper and then subjected to coating processing.
6 In addition to the above basic processes, it also includes some auxiliary processes, such as the preparation of cooking liquid, the preparation of bleaching liquid, the cooking of rubber materials, and the recovery of chemicals and heat energy in cooking waste liquid and waste gas. wait. Baqiao Paper: In 1957, ancient Western Han Dynasty paper from the 2nd century BC was unearthed in Baqiao, the eastern suburbs of Xi'an.
When it was unearthed, it was a stack of paper pieces, some large and some small, the largest was 10*10 cm, the smallest was 3*4 cm, beige. After repeated scientific tests, it was found that it is mainly made of hemp and a small amount of ramie fiber, that is to say, it is "plant fiber paper".
This ancient tomb was no later than the time of Emperor Wu of the Han Dynasty, that is, from 140 BC to 87 BC. Therefore, it can be concluded that more than 2,000 years ago, that is, in the 2nd century BC, my country had produced and Plant fiber paper is used. This kind of Baqiao paper is the earliest paper in the world unearthed by archeology.
Cai Lun Paper: Cai Lun, the inventor of papermaking in the Han Dynasty, was given the courtesy name Jingzhong. A native of Guiyang (now Chenzhou City, Hunan Province).
In the 18th year of Emperor Ming's Yongping reign (75), he entered the palace as an eunuch. In the first year of Zhanghe of the Eastern Han Dynasty (87), he was appointed Shang Fangling.
Papermaking was invented in the first year of Yuanxing (105). He summarized the experience of his predecessors and discovered that bark, hemp heads, rags, old fishing nets and other raw materials were used to make paper through processes such as beating, pounding, copying and drying. It was called "Caihou Paper" and made great contributions to the reform and promotion of papermaking. , later generations passed down as the inventor of papermaking.
Papermaking is one of the four great inventions of ancient China and has made a huge contribution to the spread and development of world culture. Zuo Bozhi: After Cai Lun, others continued to improve his methods.
About eighty years after Cai Lun's death (the end of the Eastern Han Dynasty), another papermaking expert named Zuo Bo emerged. The paper he created was uniform in thickness, fine in texture, and bright in color.
At that time, people called this kind of paper "Zuo Bo Paper". It is a pity that the raw materials and manufacturing methods used by Zuo Bo were not recorded in history.
Rattan paper: During the Wei, Jin, Southern and Northern Dynasties, paper was widely circulated and widely used by people. Papermaking technology further improved, and the papermaking area was concentrated in Luoyang, Henan before the Jin Dynasty and gradually spread to Yue, Shu, Shao, and In Yang, Anhui, Jiangxi and other places, the output and quality are increasing day by day. The raw materials for papermaking are also diverse, and there are many types of paper.
There is rattan paper in Yanxi, which is made of rattan bark. The paper is even, fine and smooth, as white as jade, and does not retain ink. Attachment: The history of paper Paper is one of the four great inventions of science and technology in ancient my country. Together with the compass, gunpowder, and printing, it provided the material and technological foundation for the prosperity of ancient Chinese culture.
The invention of paper ended the complicated history of ancient bamboo slips and greatly promoted the spread and development of culture. In ancient times, ancestors mainly relied on knotting ropes to keep records. Later, they gradually invented writing and began to use oracle bones as writing materials.
Later, bamboo and wood chips (i.e. bamboo slips) and silk were discovered and used as writing materials. But because silk was too expensive and bamboo was too heavy, this led to the invention of paper.
According to research, the production of paper had already begun in the Western Han Dynasty in my country. In 1957, the Shaanxi Provincial Museum unearthed a batch of physical objects called "Baqiao Paper" from a Western Han tomb near Baqiao in the eastern suburbs of Xi'an. Their production date should not be later than the era of Emperor Wu of the Western Han Dynasty.
Later in Luobu, Xinjiang.
2. Knowledge about paper
The earliest paper existed 2200 years ago, in the early Western Han Dynasty, but it was still very rough and not widely used. In 105 AD, Cai Lun of the Eastern Han Dynasty improved it and was considered the originator of modern papermaking.
The raw materials for papermaking are mainly plant fibers. In addition to the three main components of cellulose, hemicellulose, and lignin, the raw materials also contain other smaller components, such as resin, ash, etc. . In addition, there are auxiliary ingredients such as sodium sulfate.
Paper is generally divided into two types: flat sheet and roll. Flat paper is mainly used for sheet-by-sheet use, such as for flatbed printer printing, writing, painting, etc. Web paper is mainly used for continuous processing machinery, such as rotary printing machines, bag making machines for continuous bag making, cigarette rolling machines for continuous wrapping of cigarettes, etc.
Extended information
Classification of paper:
1. According to the production method, it is divided into handmade paper and machine-made paper.
2. According to the thickness and weight of the paper, it is divided into paper and cardboard.
3. According to use, it can be divided into: packaging paper, printing paper, industrial paper, office, cultural paper, household paper and special paper.
Baidu Encyclopedia - Paper
3. Knowledge about paper
The earliest paper existed 2200 years ago, in the early Western Han Dynasty, but it was still very rough. , not widely used.
In 105 AD, Cai Lun of the Eastern Han Dynasty improved it and was considered the originator of modern papermaking. The raw materials for papermaking are mainly plant fibers. In addition to the three main components of cellulose, hemicellulose, and lignin, the raw materials also contain other smaller components, such as resin, ash, etc.
In addition, there are auxiliary ingredients such as sodium sulfate. Paper is generally divided into two types: flat sheet and roll.
Flat paper is mainly used for sheet-by-sheet use, such as for flatbed printer printing, writing, painting, etc. Web paper is mainly used for continuous processing machinery, such as rotary printing machines, bag making machines for continuous bag making, cigarette rolling machines for continuous wrapping of cigarettes, etc.
Extended information on the classification of paper: 1. According to the production method, it is divided into handmade paper and machine-made paper. 2. According to the thickness and weight of the paper, it is divided into paper and cardboard.
3. According to use, it can be divided into: packaging paper, printing paper, industrial paper, office, cultural paper, household paper and special paper. Baidu Encyclopedia-Paper.
4. Please tell me some common sense and basic types of paper classification
Coated paper: divided into single-sided and double-sided coated coated paper, according to the Japanese Paper Industry Classification Standard The coating amount per side is about 10g/m2 or more, which is one of the most commonly used paper types in cultural publishing, advertising design, printing and binding, and industrial and commercial circles;
Lightly coated paper: coated with pigments and pressed It improves the uniformity and smoothness of the paper surface, and improves the ink holding capacity of the paper;
Daolin paper - a printing and writing paper made from chemical pulp, is currently the most popular in cultural publishing, printing and binding. One of the commonly used types of paper;
Bible paper - contains a large amount of titanium dioxide filler, has light weight and high opacity, and is specially used for printing Bibles, dictionaries or aviation expresses.
Differences:
Coated paper: smooth, bright, uniform ink absorption, good gloss, high opacity, after color printing, the pattern effect is bright and the color gradation is good, suitable for color Printed matter;
Dowling paper: The surface is not coated with slurry, and the gloss and smoothness are worse than coated paper;
Lightly coated paper: Low-quantity coating Paper, between coated paper and offset paper, its color printing effect is comparable to coated paper, and has good opacity and slipability. It has less durability, so it is more suitable for printing printed matter that does not need to be stored for a long time;
Bible paper: The paper is light and very thin, so thousands of pages of paper put together are only as thick as an average book. The paper is very smooth, smoother than ordinary paper and not rough.
5. Cherish paper information
The surge in demand for pulp is one of the reasons for the increase in wood consumption.
The country’s annual papermaking consumption is 10 million cubic meters of wood, more than 1.3 million tons of imported wood pulp, and more than 4 million tons of imported paper pulp. How many trees will be cut down? The massive waste of paper not only causes forest destruction, but also seriously pollutes rivers and lakes due to sewage discharged from production. You may not cut down the forest directly, but have you ever thought that wood is the main raw material for paper making, and wasting paper is equivalent to joining the ranks of deforestation.
Cherishing paper means cherishing our forest resources. Please do not throw away white paper casually and make full use of the blank space of paper. The paper that has been used on one side can be turned over to make scratch paper, note paper, or used as a homemade notebook. Expired wall calendars can be wrapped in book covers.
Refuse to accept those useless propaganda papers that are distributed everywhere. Producing these propaganda materials will not only waste a lot of paper, but also destroy the city appearance and hygiene by distributing and pasting them everywhere. You must be inseparable from paper when studying.
Did you know that a large amount of paper is made of wood, and 10 million cubic meters of wood are consumed annually in papermaking nationwide. The papermaking process also discharges a large amount of wastewater, polluting rivers. The pollution it causes accounts for more than 30% of the entire water pollution! Save paper.
It is to protect forests and rivers. ——Use exercise books sparingly, don’t throw away white paper casually, and make full use of the blank space on the paper.
——The paper that has been used on one side can be turned over to make scratch paper, note paper or a homemade notebook; expired calendar paper can be used to wrap book covers.
——Don’t send a large number of New Year’s cards during the New Year, because making beautiful New Year’s cards requires cutting down trees, and 4,000 greeting cards will require the sacrifice of a big tree, which will damage the environment.
——Support the "Reduce Cards and Save Trees" activity of college students' brothers and sisters, save the money spent on greeting cards to plant trees and protect nature. Recommendation: Actively promote the use of recycled paper and recycled paper products.
You can also use waste paper to make homemade New Year cards, which is unique and meaningful. The surge in demand for pulp is one of the reasons for the growth in wood consumption.
The country’s annual papermaking consumption consumes 10 million cubic meters of wood, imports more than 1.3 million tons of wood pulp, and imports more than 4 million tons of paper. How many trees will be cut down! The massive consumption of paper not only causes forest destruction, but also severely pollutes rivers and lakes due to the discharge of sewage from pulp production (the pollution caused by the paper industry accounts for more than 30% of the entire water pollution). What kind of recycled paper products have you used? Have you ever seen business cards or books made from recycled paper? Recycled paper is paper made from waste paper.
In many countries, the use of recycled paper has become fashionable. People take it as an honor to show business cards with "Made from Recycled Paper" printed on them to show their environmental awareness and civilized upbringing. Many companies also stipulate that they use recycled paper for office supplies.
The United States has regulations that 60% of the paper used by government agencies must be recycled paper. my country's forest coverage rate is only 1/4 of the world average.
According to statistics, my country's forests have declined sharply by 23% in 10 years, and the logging stock has decreased by 50%. The natural forests in Xishuangbanna, Yunnan, have been disappearing at a rate of about 16,000 hectares every year since the 1950s.
The original forest cover of 55% at that time has now been reduced by half. The Japanese, who have a lot of etiquette, have also changed their habit of giving a large number of New Year's cards in recent years.
Some large companies have published advertisements stating that they will no longer send greetings by mailing New Year's cards. College students in my country organized the "Reduce Cards to Save Trees" campaign, advocating saving money on greeting cards to plant trees and protect nature.
——The paper that has been used on one side can be turned over to make scratch paper, note paper, or made into a notebook; expired wall calendars can be wrapped in book covers. ——Refuse to accept those useless propaganda papers that are distributed everywhere. The production of these propaganda materials will not only waste a lot of paper, but also destroy the city appearance and hygiene by distributing and posting them everywhere.
Activity goals 1. Attitudes, emotions, and values ??Make students aware of the impact of wasting paper on the environment and resources, proactively take measures to save paper, and assume the responsibility of protecting the environment. 2. Methods and processes: Organize students to investigate paper consumption, cultivate awareness of paper conservation, collect information on the history of papermaking and its relationship with the environment, interview staff of recycled paper mills, and design paper-saving designs based on the collected information. and waste paper recycling programmes.
3. Knowledge and ability enable students to understand the consumption of forest resources by large-scale paper making, the pollution of the environment by small paper mills, as well as the production methods of recycled paper and the importance of saving paper and using recycled paper in protecting the environment. . Background of the event: my country uses more than 100 million tons of paper every year, which requires a large amount of paper pulp.
Pulp mainly comes from wood and recycled waste paper. At present, my country's forest coverage rate is only 13.92%, and forest resources used for papermaking are in short supply.
In recent years, on the one hand, my country has spent a large amount of foreign exchange every year to import paper, paper plates and waste paper used as raw materials for paper making. On the other hand, domestic waste paper has been severely wasted due to low purchase prices. Waste paper is the preferred raw material for papermaking.
According to experts, using waste paper can not only reduce environmental pollution but also save resources and energy compared to using wood to make paper. Abroad, countries with rich forest resources attach great importance to waste paper recycling. For example, in Japan, the forest coverage rate is much higher than that in my country, and the waste paper recycling volume reaches 100 million tons, which is equivalent to the total paper consumption in my country every year.
In 1998, the Yangtze River Basin and the Northeast region suffered severe floods, which were closely related to indiscriminate deforestation and lack of attention to the protection of forest resources. Relevant people emphasized that with the reduction of logs, the raw material for papermaking, waste paper recycling should attract sufficient attention from the perspective of environmental protection and resource reuse.
Paper is a daily necessities for students. Guiding students to pay attention to the problems in the use and recycling of paper can help students establish the awareness of starting from small things and starting from themselves to protect the environment. Activity process The entire activity takes 3 class hours to complete.
Lesson 1: Guide students to discuss topics about paper: What do you know about paper? What else do you want to know about paper? Through this activity, students can actively pay attention to the actual use of paper in life, ask questions about paper, and on this basis, select and determine their own research topics, establish research groups, and formulate research plans. Lesson 2: Students carry out research and practical activities as planned.
Lesson 3: Display and communicate the results of preliminary research, conduct in-depth research and exploration, and finally complete the reflection and evaluation of the activity. Student Activities Teacher Guide Part 1: Basic Activities Lesson 1: Start by observing the waste paper recycling signs, focus on the issue of "paper", and start thinking about paper.
6. Ask for a tip about paper
Tell you some tips for simply testing paper!
Single-sheet inspection
Pick out any piece of paper from the paper pile, touch the surface with your hands or look at the paper flatly, and check the smoothness, uniformity and cleanliness of the paper surface. Generally speaking, the surface of the paper should be smooth, without traces or lumps. At the same time, the surface of the paper should not have spots with different colors and reflections, or dust that is inconsistent with the color of the paper.
Hold the paper up to the light and check the uniformity of the paper. When viewed against the light, the paper should not have light or dark spots of varying degrees of light or transparency. If there are large areas of uneven cloud-like spots on the paper, it means that the uniformity of the paper is poor, which will seriously affect the quality of the printed matter.
7. Questions about paper knowledge
The appearance quality of printing paper and the appearance quality of common paper defects can be distinguished by human senses alone without the use of instruments and equipment. Paper quality condition.
It can be divided into the appearance quality of the paper itself and the appearance quality of the piece of paper formed by a piece of paper or a long strip of paper. Regardless of the appearance quality, it affects the use of paper to varying degrees.
Poor appearance quality will not only reduce the use value of the paper and the printing yield, but in serious cases, the paper will become a waste product. In addition, some serious surface defects in the paper, such as cardboard blocks, etc., may cause damage to the printing plate and rubber roller during printing, causing damage to the printing equipment.
The appearance quality and physical properties of paper are also closely related. For example, the smoothness and opacity of paper with obvious seersucker appearance will also be affected to a certain extent.
The appearance quality inspection of paper should achieve the following three purposes: Check the quality of the finished paper. Mainly include: whether the shape of the piece of paper is good, whether the size is qualified, packaging quality and degree of damage, etc.
Master the basic quality of paper. Including color, uniformity and smoothness, flexibility and tensile strength, smoothness and cleanliness, etc.
Randomly check the approximate miss rate of lithographic printing paper (the percentage of paper with obvious paper defects to the total number of papers). The meaning of paper In order to help readers have a general understanding of paper, first of all, a brief introduction to the common sense of paper will be given.
Paper is an important material condition for the recording, accumulation, transmission and development of human civilization and literary science. It plays an extremely important role in the history of human development. With the improvement of paper quality and new varieties With the continuous emergence of paper, the application of paper has expanded to various fields such as culture and science, daily life, medical and health, commerce, national defense, industrial and agricultural production, etc. There is almost no one in modern society who does not know paper, but there may be almost no one who knows all paper.
Paper is something that almost everyone is familiar with. However, what exactly is paper, or what is the definite meaning of paper? I'm afraid many people, including those who often deal with paper, may not be able to answer accurately.
According to the provisions of the National Standard of the People's Republic of China (GB4687-84), the so-called paper is made of plant fiber, mineral fiber, animal fiber, chemical fiber or these fibers from a suspension. The mixture is deposited onto appropriate forming equipment and dried to produce a flat, uniform sheet. Broadly speaking, paper - can be used to encompass the terms paper and cardboard.
According to the standards of the paper industry sector, paper sheets with a basis weight less than 225g/m2 are usually called paper or paper, and those with a basis weight greater than 225g/m2 are called cardboard. However, this limit is not absolute and must be flexibly grasped based on the characteristics and uses of the paper.
In the past, my country’s quantitative regulations for paper and cardboard were: anything below 150~200g/m2 was called paper; anything above 150~200g/m2 was called cardboard. Since the boundaries between cardboard and paper are not very clear, and the industrial sector and the commercial sector are not unified, paper with a basis weight of about 200g/m2 is often called paper card.
Over time, a rule has gradually formed, that is, paper with a basis weight of more than 200g/m2 and whose main purpose is printing or decoration is called cardboard. Such as 250g/m2 copper card (paper), 280g/m2 glass card (paper), etc.
Paper is an important resource in human social life. From ancient times to the present, the main raw materials used in papermaking are plant fibers, such as wood, reeds, bamboo, wheat straw, straw, bagasse, bark, flour, hemp, etc.
However, with the development and progress of society, the types of fiber raw materials used in papermaking and the application scope of papermaking products are constantly expanding. The development of papermaking technology has also profoundly changed the depth and breadth of paper processing. changes. If paper made mainly of plant fibers is called "first-generation" paper, then paper made of synthetic fibers and paper made of plastic film are called "second-generation" paper. Known as synthetic paper.
This is the kind of paper used in calendar films. In recent years, "functional paper" has appeared at home and abroad.
The so-called functional paper is to use certain special raw materials to create new paper types with certain special functions. Newspapers report that the paper used in foreign paper watches probably belongs to this type of functional paper.
Some people call this type of functional paper "third generation paper". Ordinary paper, which has not been processed again after being copied, is generally called paper or base paper.
In order to provide the surface properties and decorative effects of the paper, or to give the paper a special performance, the original paper is reprocessed, and the resulting finished product is called processed paper (such as coated printing paper, carbon paper, etc.). However, processing alone cannot meet the needs of certain special uses. Therefore, new fiber raw materials and processing measures are used to obtain paper with certain functions.
Fire-resistant paper, luminous paper, electromagnetic wave shielding paper, and car cleaning paper known as "Oriental Magic Paper" can all be regarded as functional papers. Although people still have little application and understanding of functional paper, it can be expected that in the near future, functional paper will appear more frequently and become familiar to people.
Look at things from the perspective of development and progress. The concept and meaning of paper must not be understood in a narrow sense. Selection and use of printing paper Proper and reasonable selection and use of paper are of great significance for ensuring the quality of publications and reducing the cost of publications.
As a material manager in the publishing and printing industry, you must not only pre-select the types and specifications of paper required based on the department’s annual and quarterly publishing plans, but also be able to accurately calculate the required paper according to the publishing plan. Quantities of various types of paper required. It is also necessary to coordinate and guide printing personnel to use paper rationally in order to reduce paper consumption and improve economic benefits.
(1) Selection of paper The selection of paper includes several aspects such as selection of varieties, specifications and quality levels. You cannot only focus on one aspect and ignore other aspects. When choosing paper types, you mainly need to choose based on the characteristics of the printed matter to be printed and the type of printing press used.
When printing color covers, illustrations or advertising inserts in books and periodicals, double-sided coated paper or offset paper can be used; when printing single-sided printed matter such as trademarks, single-sided coated paper or single-offset paper can be used; Dictionary paper or thin letterpress paper should be used for reference books such as dictionaries, dictionaries, and manuals; offset printing paper or letterpress printing paper can be used for printing general books. It is also printing general books. If you want to use it on a rotary printing press, you need to use web paper (except for flatbed rotary printing machines). If you plan to print on a general platform, you need to use flat paper.
8. What knowledge is there about the introduction of paper?
Measurements of paper Specifications of paper 1. What are the specifications of paper? Commonly used paper has two specifications: generous and positive.
2. What is generous paper? Specification 889*1193 (mm) is generous paper. 3. What is positive degree paper? Specification: 787*1092 (mm) is positive paper.
4. How to calculate the base number of paper? Fold the entire paper into halves, then fold the halves into quarters. Measurement of paper 1. What is the unit of measurement for paper? Order or volume. 2. What is web paper? Roll the entire paper into a tube.
3. How many pieces of paper are there in one ream? A ream is 500 sheets of paper. (In some countries, one ream is equal to 1,000 sheets of paper) 4. How to convert rolls and reams? Usually one roll is equivalent to about 10 reams.
5. How is the thickness of paper measured? Weight. (The more grams, the thicker the paper will be) 6. What does gram weight mean? Gram weight represents the weight of a piece of paper per square meter.
Regular size business card horizontal version: 90*55mm 85*54mm vertical version: 50*90mm 54*85mm square version: 90*90mm 90*95mm IC card 85x54MM standard size of tri-fold advertising: (A4 ) 210mm x 285mm Standard size of ordinary brochure: (A4) 210mm x 285mm Standard size of file envelope: 220mm x 305mm Poster: Standard size: 540mm x 380mm Standard size of hanging flag: 8 in 376mm x 265mm 4 in 540mm x 380mm Handbag: Standard size: 400mm x 285mm x 80mm Letter paper note: Standard size: 185mm x 260mm 210mm x 285mm Positive scale paper: 787*1092mm Open number (positive scale) Dimensional unit (mm) Full open 781*1086 2 open 530*760 3 open 362*781 4 open 390*543 6 open 362*390 8 open 271*390 16 open 195*271 Note: Finished product size = paper size - trimming size Large paper: 850*1168mm open number (positive degree) size unit ( mm) Full opening 844*1162 2 opening 581*844 3 opening 387*844 4 opening 422*581 6 opening 387*422 8 opening 290*422 Note: Finished product size = paper size - trimming size common format size (unit: mm ) Format size: 787 x 1092 folio: 736 x 520 4 folio: 520 x 368 8 folio: 368 x 260 16 folio: 260 x 184 32 folio: 184 x 130 Format size (generous): 850 x 1168 folio: 571 2 open 530*760 3 open 362*781 4 open 390*543 6 open 362*390 8 open 271*390 16 open 195*271 Note: Finished product size = paper size - trimming size Generous paper: 850*1168mm open number (positive degree) Size unit (mm) Full opening 844*1162 2 opening 581*844 3 opening 387*844 4 opening 422*581 6 opening 387*422 8 opening 290*422 Note: Finished product size = paper size - trimming size 16 open: 210*285 positive: 185*260 8 open: 285*420 positive: 260*370 4 open: 420*570 positive: 370*540 2 open: 570*840 Squareness: 540*740 Full size: 889*1194 Small: 787*1092 Paper size in inches in mm Full sheet 36 x 26 43 x 31 1091 x 786 Folio 26 x 18 31 x 21.5 786 x 545 ⒉ Open 26 x 12 14.3 x 31 786 x 370 ⒊ Open 18 x 13 21.5 x 15.5 545 x 393 ⒋ Open 26 x 7.1 31 x 8.5 786 x 215 ⒋ Open 14 x 12 16.75 x 14.25 425 x 370 ⒌ open 13 x 12 15.5 x 14.25 393 x 362 ⒌ open 26 x 6 31 x 7.125 786 x 182
⒎ Open 13 x 9 15.5 x 10.75 393 x 272 ⒎ Open 18 x 6.5 21.5 x 7.75 545 x 196 10 Open 13 x 7.1 15.5 x 8.5 393 x 215 12 Open 12 x 6.5 14.25 x 7.75 36 2 x 196 15 on 8.3 x 7.1 253 x 215 10 x 8.5 16 on 9 x 6.5 10.75 x 7.75 272 x 196 18 on 12 x 4.3 14.25 x 5.125 362 x 129 18 on 8.6 x 6 10.25 x 7.125 260 x 182 20 on 7.1 x 6 .5 8.5 x 7.75 215 x 196 24 6.5 x 6 7.75 x 7.125 196 x 182 25 7.1 x 5.2 6.1875 x 8.5 215 x 156 30 7.1 x 4.1 8.5 x 5 215 x 126 32 9 x 3.2 10.75 x 3.875 272 x 9 8 32 open 6.5 x 4.5 7.75 x 5.375 196 x 136 36 on 6 x 4.3 7.125 x 5.125 182 x 129 48 on 6 x 3.25 7.125 x 3.875 272 x 98 50 on 5.3 3.55 6.3125 x 4.25 160 x 107 64 on 4. 5 x 3.25 5.375 x 3.875 136 x 98 72 open 4.5 x 2.8 5.375 x 3.375 136 x 85 128 Open 3.25 x 2.2 3.875 x 2.625 85 x 67.