According to textual research, the production of paper began in the Western Han Dynasty, and it was widely circulated in the Wei, Jin, Southern and Northern Dynasties. Because of its wide use, papermaking has been further improved. Paper raw materials are also diversified. There are many kinds of paper, such as bamboo curtain paper, rattan paper, fish egg paper, etc ... Cai Lun has a wide range of papermaking raw materials. Paper made of rotten fishing nets is called net paper, and paper made of rags is called cloth paper.
During the Sui and Tang Dynasties, the famous Xuan paper was born. There is a legend in Xuanzhou, Anhui Province, the main producing area of Xuan paper: Cai Lun's apprentice Kong Dan, who made paper in southern Anhui, always wanted to make a particularly ideal white paper for his master to paint and compose. But after many experiments, it can't be realized. Once, he happened to see some sandalwood trees lying beside the mountain stream, which had been corroded by water for a long time and had rotted and turned white. Later, he made paper with this bark and finally succeeded. It can be concluded that using bark as rice paper has been very popular in the Tang Dynasty. )
On the basis of the previous generation of yellow paper dyed in the Tang Dynasty, wax was evenly coated on the paper to make the paper have the advantages of luster, luster and beauty, which is called hard yellow paper. The paper industry of the Five Dynasties continued to develop. Zhangzhou's Chengxin Tang paper was always considered as the best paper until the Northern Song Dynasty. During the Ming and Qing Dynasties, the paper industry flourished and innovated constantly. All kinds of stationery are popular again, and white paper and elegant paper are highly respected in texture, with bright and quiet colors, such as pastel paper and printing and dyeing paper in Kanggan period. By the Qing Dynasty, the production of paper had reached a perfect level. The process of making paper)
The production of general printing paper is divided into two basic processes: pulping and papermaking. Pulping is to dissociate plant fiber raw materials into natural pulp or bleached pulp by mechanical method, chemical method or a combination of the two. Papermaking is to combine pulp fibers suspended in water into sheets that meet various requirements through various processes.
Paper mills generally need to store enough raw materials for 4 ~ 6 months, so that the raw materials can naturally ferment during storage, which is beneficial to pulping and ensures the continuous production of paper mills. Raw materials such as reed, wheat straw and wood are cut into pieces (used to produce chemical pulp) or wood chips (used to produce ground wood pulp) in the material preparation section, and then small pieces of raw materials are put into a digester, added with chemical liquid, and steamed with steam to make the raw materials into pulp, or the wood chips are sent to a wood mill to be ground, or they can be ground after a certain degree of cooking. Then wash the pulp with plenty of clean water, and remove coarse chips, knots, stones and sand from the pulp through screening and purification. According to the requirements of paper types, the pulp is bleached to the required whiteness with bleaching agent, and then beaten with beating equipment. Then various auxiliary materials, such as fillers, sizing agents, sizing agents, etc., are added to the pulp, and then purified and screened. Finally, the paper pulp is sent to a paper machine, the water is filtered in the wire section, squeezed and dehydrated, dried in a dryer, calendered and coiled, and then cut, rewound or cut to produce rolled paper and plain paper. If the production is to produce coated printing paper, it needs to be dried in the middle or produced into roll paper and then coated.
In addition to the above-mentioned basic procedures, it also includes some auxiliary procedures, such as the preparation of cooking liquid, the preparation of bleaching liquid, the boiling of rubber compound and the recovery of chemicals and heat energy from cooking waste liquid and waste gas.
For thousands of years, human beings have been leaving traces. Some pictures of people and animals in caves are at least 25,000 years old. However, the time for humans to record history with pens is much shorter. The development of pen-making technology in the past two thousand years is the best embodiment of human creative thinking.
2000 BC: People in China write with a brush made of mouse hair. This ink is a mixture of soot, lamp oil and gel. BC 1200: The Egyptians extracted natural dyes and colors from berries, plants and minerals to make black water. This pen is a thin reed. 600 years later, the Egyptians invented papyrus.
AD 400: Many civilized societies invented more stable ink. It is made of iron salt, oak bile and gum Arabic. This basic formula has been used for centuries.
AD 700: The Romans invented quill pens, using feathers from the wings of big birds. Feather pen became the main writing tool in the later 1000.
1548: Juan de Iciar, a Spanish calligrapher, mentioned bronze pens for the first time in his calligraphy manual. 1700: Nicolas Bion (a master of musical instrument making in Louis XIV's France) first left drawings for fountain pens. He has five pens handed down from generation to generation.
1803: British engineer Brian Jintang obtained the patent for the first steel nib.
1809: Peggy Williamson obtained the patent for pen making for the first time in the United States, which is a fountain pen with ink in the pen tube. However, his design has many defects.
1830: British steelworkers william joseph Gillot, william mitchell and James Stephen Perry invented the method of mass production of pen tips. Due to the improvement of steel quality in the next 20 years, fewer and fewer people use quill pens.
1884: Lewis Edersen wortmann, an insurance salesman in new york, invented the first practical fountain pen after losing an important customer because the pen was broken.
1888: John Lauder of weymouth, Massachusetts, USA obtained the patent for the first ballpoint pen, but it was not mass-produced until the patent expired.
In the first decade of the 20th century, four pen manufacturers dominated the market, namely Parker, Xifeili, Will Yongfeng and Liverman.
19 12: Xifeili Pen Co., Ltd. added a pull rod water absorption device to the pen tube of fountain pen. Before this, people used droppers to add ink to fountain pens.
1935: Wolman introduced the ink bag, which was a small glass tube with a cork at that time.
1938: Hungarian journalist László Bíró and his brother Georg invented the first practical ballpoint pen. It uses printing ink that can be dried quickly. The British government later allowed them to make ballpoint pens for British Air Force pilots. Ballpoint pens do not leak oil at high altitude, while fountain pens leak oil.
1945: Milton Reynolds, a Chicago businessman, redesigned Biro's invention and introduced it to the United States. Biro's invention was not patented in America at that time. Yongfeng Company, which owns the patent right of Biro's invention, soon put their products on the market. The new fountain pen caused a sensation and sold well.
1950: French baron Marcel Bisch founded BIC company. His company is good at mass production of ballpoint pens. (Today, the bicycle company is the largest pen-making company in the world, selling 2,654,380,000 pens every day and 7.6 billion pens a year. ) 195 1 year: after the initial craze, the public found that ballpoint pens were expensive and unreliable. The sales of ballpoint pens dropped sharply. The pen is back.
1954: Parker Pen Company launched a "notebook" ballpoint pen. This more reliable new ballpoint pen takes five times as long as the most popular similar products. Sales of ballpoint pens have picked up again. 1962: Tomiiki Horie of Tokyo Stationery Company is famous for inventing felt-tip pens.
1966: Fisher invented the space pen for NASA. The ink bag of this pen is pressurized and can write in weightlessness.
1979: Gillette has introduced a new type of pen, which can erase words within 10 hour. The key is to use rubber glue as ink.
1984: Japan Sakura Company introduced neutral ink pen, which is an intermediate product of ballpoint pen and marker pen, and uses neutral pen.
1996: Pentel Company of the United States introduced "Milkys" neutral ink pen, which was deeply loved by American children.