A kind of stone paper and its processing method

Abstract

Relating to synthetic paper and its making technology, the invention relates to stone paper and its processing method. The stone paper consists of a base paper layer and a coating layer that is coated on the base paper layer. The base paper layer comprises an organic component and an inorganic component, with 20-30 by weight parts of polypropylene as the organic component, and 70-80 by weight parts of the inorganic component composed of light calcium carbonate and lithopone. The processing method consists of the steps of: baking and dehydrating light calcium carbonate and lithopone and stirring them uniformly, then mixing the mixture with polypropylene powder and stirring them well, then conducting banburying and kneading treatment, and performing granulation in granulation equipment; carrying out extrusion in a calender so as to obtain the base paper layer, then implementing corona treatment; coating the coating layer material on the surface of the base paper layer. The stone paper of the invention has the advantages of environment protection, good flexibility, good folding endurance and tearing resistance. Suitable for ordinary printing ink, the stone paper provided in the invention can be used as cultural, food and hygienic paper, notebook and textbook paper, as well as printing paper, etc.

Description

technical field [0001] The present invention relates to synthetic paper and its production technology, especially a kind of paper synthesized with certain inorganic substances derived from stones as the main component, so-called stone paper and its production technology. Background technique [0002] With the progress of social civilization and the continuous improvement of human living standards, the demand and consumption of paper products continue to increase. The traditional papermaking technology has at least the following deficiencies: ①. The main raw material for papermaking is wood pulp made from trees. The papermaking industry consumes a lot of valuable forest resources, which is an important factor leading to the imbalance of the earth's ecology. ②, the paper industry also consumes a lot of water and energy. ③. Most of the production of various papers is produced by wet method. A series of chemical and physical methods are used to produce pulp, which discharges a ...

AI Technical Summary

Problems solved by technology

Traditional papermaking technology has at least the following deficiencies: ①. The main raw material for papermaking is wood pulp made from trees. The papermaking industry consumes a lot of valuable forest resources, which is an important factor leading to the imbalance of the earth's ecology

②, the paper industry also consumes a lot of water and energy

③. Most of the production of various papers is produced by wet method. A series of chemical and physical methods are used to produce pulp, which discharges a large amount of acid and alkali waste liquid, pollutes the soil and water, and destroys the environment on which human beings depend. and threats, while the up-to-standard treatment of acid and alkali waste liquid requires a lot of investment, and the treatment is difficult, resulting in increased production costs

④, the production method is complicated, and the equipment investment is large

In the existing materials reported on stone paper or in related patent applications, the inorganic components and inorganic components of stone paper are generalized, and there is no careful selection, so its performance is subject to some restrictions, and its comprehensive performance is lacking. It is not ideal, some are not easy to print, some are lacking in folding resistance and tear resistance, etc., thus affecting the promotion of stone paper