Invention and development of paper

The paper used in our company’s bread boxespizza boxes and other food packaging boxes is produced by the most advanced papermaking technology, providing each guest with the best quality products

During the Western Han Dynasty (206 BC), China already had papermaking, and in the first year of Yuanxing (105) in the Eastern Han Dynasty, Cai Lun improved the papermaking. He uses bark, hemp head, cloth, fishing net and other raw materials to make paper through the processes of tamping, pounding, frying, baking, etc., which is the origin of modern paper. This kind of paper, the raw material is easy to find, it is very cheap, the quality has also improved, and it is gradually widely used. To commemorate Cai Lun’s achievements, later generations called this paper “Cai Hou paper”.4

Paper is the crystallization of the long-term experience and wisdom of the Chinese working people. Paper is a sheet-like fiber product used for writing, printing, painting or packaging. Generally, it is made from the water suspension of pulped plant fibers, which is interlaced on the net, initially dehydrated, and then compressed and dried. China is the first country in the world to invent paper.3

Today’s technology is advancing rapidly, and the modern papermaking process has been mechanized.

Groundwood Pulp uses mechanical grinding force to obtain wood fiber, also known as mechanical pulp, which can be divided into general mechanical pulp, refined mechanical pulp, thermomechanical pulp, etc.

Chemical pulp uses chemical methods to separate fibers from lignin to obtain wood fibers, which can be further divided into soda pulp, sulfite pulp, and sulfate pulp.

Semichemical pulp (Semichemical Pulp) Combining mechanical and chemical pulping methods, it can be further divided into neutral semi-chemical pulp, cold soda pulp, chemical mechanical pulp, etc.

 


Post time: Jun-30-2022