为什么说蔡伦改进了造纸术?
造纸术是中国四大发明之一,发明时期于汉朝西汉时期,改进时期于汉朝东汉时期。中国是世界上最早养蚕织丝的国家。中国古代劳动人民以上等蚕茧抽丝织绸,剩下的恶茧、病茧等则用漂絮法制取丝绵。
漂絮完毕,篾席上会遗留一些残絮。当漂絮的次数多了,篾席上的残絮便积成一层纤维薄片,经晾干之后剥离下来,可用于书写。这种漂絮的副产物数量不多,在古书上称它为赫蹏或方絮。
Papermaking is one of the four great inventions in China, which was invented in Han Dynasty and Western Han Dynasty, and improved in Han Dynasty and Eastern Han Dynasty. China is the first country in the world to raise silkworms and weave silk. In ancient China, the cocoons of the working people and above were drawn into silk, and the rest of the evil cocoons and sick cocoons were made into silk floss by bleaching.
After bleaching, some residual flocs will be left on the mat. When the number of bleaching flocks is increased, the residual flocs on the grid will accumulate into a fiber sheet, which will be peeled off after being dried and can be used for writing. The number of by-products of this kind of bleaching is small, and it is called Herculum or Square Flour in ancient books.
发展历史
远古以来,中国劳动人民就已经懂得养蚕、缫丝。秦汉之际以次茧作丝绵的手工业十分普及。这种处理次茧的方法称为漂絮法,操作时的基本要点包括,反复捶打,以捣碎蚕衣。这一技术后来发展成为造纸中的打浆。此外,中国古代常用石灰水或草木灰水为丝麻脱胶,这种技术也给造纸中为植物纤维脱胶以启示。纸张就是借助这些技术发展起来的。
历史上关于汉代的造纸技术的文献资料很少,因此难以了解其完整、详细的工艺流程。后人虽有推测,也只能作为参考之用。总体来看,造纸技术环节众多,因此必然有一个发展和演进的过程,绝非一人之功。它是中国劳动人民长期经验的积累和智慧的结晶。