The invention of papermaking is a significant contribution of China to humanity, and paper is an indispensable and important commodity for people's work, study, and life. Traditional papermaking has caused global forest resource scarcity due to excessive logging of trees. The papermaking production process has caused unresolved environmental pollution and negative impacts on the ecological environment, which has attracted high attention from all humanity.
Using inorganic powder (mainly calcium carbonate) as the main raw material, a small amount of synthetic resin and chemical additives are added, and advanced process technology is adopted to produce a new type of environmentally friendly synthetic paper. This is a new variety of paper that can be used in fields such as printing, packaging, cardboard, and various labels, with excellent paper properties and environmental performance.
Synthetic paper is called "unbreakable" paper. At present, it is popularly called "stone paper" or "stone plastic paper". The name of "synthetic paper" is relatively scientific. Synthetic paper has a development history of more than 30 years in Europe, America and Japan. Its trial production began more than 10 years ago in China. At that time, due to the production of ordinary paper and synthetic paper, the market price was inverted, and other reasons, it could not be widely promoted in the domestic market.
The promotion and application of stone plastic paper will bring broad prospects for sustainable development for China's development of a low-carbon economy and the construction of an environmentally friendly society. Due to the wide application fields of stone plastic paper (printing, decoration, packaging, etc.), some manufacturers in China are already producing it. At present, a more suitable production process in China can use the production of blended modified special materials, followed by casting/rolling processes, and surface treatment to produce synthetic paper. The inorganic powder in the synthetic paper produced by this process accounts for 60% to 80% of the product quality, with high production efficiency, advanced and reasonable practicality, and product varieties that can be adjusted according to market needs.
Stone plastic paper is a plastic modified paper product produced by combining synthetic resin, inorganic powder, and chemical additives. A large number of inorganic powders occupy an important share in products, while resins and additives play a crucial role, hence the term "stone paper" in society. Our recently developed PLA/CaCO3 synthetic paper uses polylactic acid produced from crops such as sweet potatoes and corn as a carrier, replacing synthetic resins produced from petroleum resources. The produced synthetic paper is used for packaging in food, daily chemical, pharmaceutical, and other fields, The product can naturally degrade after use, solving the problem of not being able to recycle synthetic paper and ordinary paper at the same time. This product also has obvious product hygiene and greenness, and is a low-carbon, energy-saving and environmentally friendly product that the country focuses on supporting in the development of circular economy.
Here, if friends from all walks of life are interested in learning more about the production process and equipment of the "Stone Paper" project, we welcome your call, letter, or visit Nanjing Juli Chemical Machinery Co., Ltd. to discuss and exchange ideas about the technology and equipment of "Stone Paper" production!