Square: The content of calcium carbonate powder in the stone paper can reach 70% to 80%. The material has a wide range of sources. It is a veritable "stone paper".
The opposite: Although stone paper uses limestone mineral resources as the main raw material, the base material of high molecular polymer accounts for 20% to 30% of the total content, and petroleum is still needed as an auxiliary raw material. In fact, the use of calcium carbonate, the main component of limestone, as a filler in the paper industry has a long history. At present, traditional paper products have been used up to close to 20%. In a sense, some traditional paper products are also "stone". paper".
Comment: There is no doubt that the main raw material of stone paper is "stone", but the content of chemical substances in its constituent parts cannot be underestimated. In the sense that the nature of things is determined by the main contradiction of things, the term "stone paper" is not wrong, but the "stone" attribute of stone paper cannot be exaggerated at will, and the content of other chemical substances is ignored.
