石器時代

 找回密碼
 立即註冊
搜索
熱搜: 活動 交友 discuz
查看: 9|回復: 0

How is paper made?

[複製鏈接]

1

主題

1

帖子

5

積分

新手上路

Rank: 1

積分
5
發表於 2024-3-16 15:03:31 | 顯示全部樓層 |閱讀模式




Paper is one of humanity's most revolutionary inventions. It is thanks to paper that people began to develop written language. Paper is used to produce documents, banknotes and books. It is also a hygienic and efficient packaging material and a raw material for industry. What is paper made of? What is the paper production process like? Read our article and find out more. Published: 05-12-2023 How was paper invented? The invention of paper is attributed to a Chinese official named Cai Lun . That tireless researcher spent more than ten years looking for a material that could replace bamboo and silk. After years of analyzing the individual stages of paper production , in 105 CE Lun created the world's first provisional sheet of paper. He produced it using diluted plant fibers formed into a cloth. The Chinese invention turned out to be a great alternative to papyrus and clay tablets. In the following centuries, the paper production process was continually improved by Asians, Arabs and Europeans. The first paper mills in Poland were established at the end of the 15th century. The year 1799 was a great advance in the history of paper. It was then that the world's first paper machine was invented in France. Thanks to it, long strips of paper could be produced instead of single sheets.

What is paper made of? The paper production process has evolved and manufacturers continue to improve their composition and production methods. So what is paper made of? To make it, we need organic pulp. It is a type of water sludge that contains substances such as cellulose pulp, obtained mainly from coniferous trees such as pine or fir. Paper manufacturers also enthusiastically use certain types of deciduous trees, such as poplar or birch. And what are the packaging or toilet paper made of? These products are usually made from secondary raw materials , such as waste paper, certain cotton fabrics, as well as straw or reed. Various additives such as dyes, adhesives or coagulants also play an important role in the papermaking process. Stages and description CZ Leads  of paper production. What does paper production entail? Obviously, the whole process begins with the planting and felling of trees or the collection of other materials necessary for pulp manufacturing. Here are the stages of paper production given step by step: The wood is delivered to the production plant where it is crushed into small pieces (chips). The chips are then ground, crushed, boiled and cleaned. Organic pulp undergoes processes such as bleaching or coloring and refining. The slurry is placed on special grates that drain water and give the pulp a specific shape.



The paper is then rolled, further dehydrated, pressed, and cooled. How many phases are there in paper production? The 5 stages of paper production presented above obviously do not describe the entire production process. Depending on the intended use of the paper, it can also be cut, rolled, combined into several layers or coated with lacquer. How do we make a sheet of paper? How is printer paper made? The plain white sheets of paper you use every day are made from processed wood chips. During the cooking stage, the wood pulp is treated with agents such as dyes, bleaches or additives to provide the necessary strength. Manufacturers also add starch to the forming pulp, which helps harden and strengthen the sheets. After drying and shaping, the sheets are cut into any desired format using a guillotine. The production of handmade paper. Handmade paper has been classified for centuries as what is known as a 'noble' paper for everyday use; how is it done? In the past, the main material used for production was bush bast. During boiling, various ingredients were added to the pulp, including wood ash, and the resulting mixture was poured into special screens. How can you make your own handmade paper? Nowadays, you can do it at home. The preparation process is very simple and all you need is used paper, boiling water and a cotton cloth.


回復

使用道具 舉報

您需要登錄後才可以回帖 登錄 | 立即註冊

本版積分規則

Archiver|手機版|自動贊助|石器時代

GMT+8, 2025-4-30 19:26 , Processed in 0.668155 second(s), 17 queries .

抗攻擊 by GameHost X3.4

Copyright © 2001-2021, Tencent Cloud.

快速回復 返回頂部 返回列表
一粒米 | 中興米 | 論壇美工 | 設計 抗ddos | 天堂私服 | ddos | ddos | 防ddos | 防禦ddos | 防ddos主機 | 天堂美工 | 設計 防ddos主機 | 抗ddos主機 | 抗ddos | 抗ddos主機 | 抗攻擊論壇 | 天堂自動贊助 | 免費論壇 | 天堂私服 | 天堂123 | 台南清潔 | 天堂 | 天堂私服 | 免費論壇申請 | 抗ddos | 虛擬主機 | 實體主機 | vps | 網域註冊 | 抗攻擊遊戲主機 | ddos |