Low-specific-gravity stone paper

Abstract

The invention discloses low-specific-gravity stone paper relating to synthetic paper. The low-specific-gravity stone paper comprises a base paper layer and a coating layer, wherein the coating layer is coated on the base paper layer; the base paper layer comprises 15-30 parts by weight of synthetic resin and 70-85 parts by weight of mixing material, wherein the synthetic resin is polylactic acid, EVA (ethylene vinyl acetate copolymer), PP (polypropylene), PE (poly ehtylene) or a mixture of any two of the polylactic acid, the EVA, the PP and the PE; the mixing material is a hollow glass ball, coal ash or the mixture of the hollow glass ball and the coal ash; and the coating layer comprises 20-40 parts by weight of acrylic resin, 20-40 parts by weight of lithopone and 30-50 parts by weight of deionized water. The low-specific-gravity stone paper has the following benefits: the mixing material is the hollow glass ball or coal ash so that the mixing material has low specific gravity and good dispersity; the lithopone has good covering power, thus the weight of the paper is convenient to reduce, the paper quality is improved, and the manufacturing cost is reduced.

Description

Technical field [0001] The invention relates to stone paper, especially a stone paper with a small specific gravity. Background technique [0002] The demand and consumption of paper products continue to increase, which is related to the progress of social civilization and the continuous improvement of human living standards. Traditional papermaking technology has at least the following shortcomings: 1. The main raw material for papermaking is wood pulp made from trees. The papermaking industry consumes a lot of precious 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. The production of all kinds of paper mostly adopts wet production. A series of chemical and physical methods are used to produce paper pulp, which discharges a large amount of acid and alkali waste liquids, pollutes soil and water bodies, and destroys the environment on which mankind depends. However, ...

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 complex and the equipment investment is large

However, currently produced stone paper is heavier than traditional paper, thus limiting the application of stone paper