Knowledge

Sources and characteristics of pulping and papermaking wastewater

1 waste liquid of cooking section That is, black liquor produced by alkali pulping and red liquor produced by acid pulping. Black liquor is produced by alkaline pulping in most pap

Apr 01, 2021

What are the differences between white cardboard and copperboard?

White cardboard is a kind of strong and thick paper with large quantities. Once upon a time, some people planned to divide paper, cardboard, and paperboard according to their ratio

Mar 31, 2021

Several problems in the collection of china paper

Xuan paper is a unique traditional handmade paper in China. It has been handed down for more than 1000 years since Tang Dynasty. Its production technology is still well preserved a

Mar 29, 2021

Classification and composition of coated paper

Coated paper has single-sided coated paper, double-sided coated paper, matte coated paper, cloth coated paper. According to the quality, it can be divided into a, B and C. The main

Mar 24, 2021

Characteristics and applications of coated paper

Coated paper is characterized by a smooth surface, high smoothness, and good gloss. Because the whiteness of the coating is more than 90%, and the particles are very fine, and it i

Mar 22, 2021

Moisture content and equilibrium moisture of paper

The moisture content of the paper has a great influence on printing. If the moisture content is too low, the paper will be brittle and easy to produce static electricity in printin

Mar 19, 2021

Which is better to put tea in iron bucket or paper bucket? How should tea be ...

The key to the commonly used teapot is stainless steel bucket, paper bucket, and tin bucket. The paper bucket should be used as a gift, usually not as tea leaf storage. The paper b

Mar 17, 2021

What is a paper tube? Where is the paper tube mainly used?

Paper tube packaging has good market prospects for development and design and can be used as a substitute for metal materials, laminated glass, porcelain plastic packaging containe

Mar 15, 2021

Can you tell the difference between printing paper and copy paper?

Not long ago, many people knew the writer and talked a lot about the copier. But why did they write little on the paper type? After all, it was the fourth cost in the middle and la

Mar 12, 2021

How to put the fax paper?

When it comes to fax machines, many people should not feel like strangers, especially for office workers in the company. If a fax machine wants to give full play to its function of

Mar 10, 2021

What is the difference between writing paper and double gummed paper?

Double offset paper refers to printing paper, also known as offset paper. It has the characteristics of small elasticity, good linearity, and strong water solubility resistance. In

Mar 08, 2021

What is the material of insulating paper？

Insulating paper is a general term for insulating paper. As the thermally conductive material of cable, an electromagnetic coil, and other electrical equipment, as the thermally co

Mar 05, 2021