New generation of environmental protection - new technology of stone papermaking
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1. Introduction
The Shike paper produced by Stone Paper Technology, which has been launched on the market, has become a new product of environmental protection and energy conservation. The properties and uses of Shike Paper are similar to those of coated paper, and it is more environmentally friendly. demand. Although countries advocate “paperlessness”, contrary to the facts, the amount of paper used in the world continues to rise sharply, and although the speed of traditional papermaking machines is fast, the problem of insufficient raw materials continues to emerge, and Shike Paper can replace The problem currently facing.
2. the development and origin of Shike Paper
Shike Paper is made of paper made from stone. It was developed by Taiwan Longmeng Science and Technology R&D team in 1990. It is made with a large amount of inorganic mineral powder (stone powder) and a small amount of resin. The new paper with similar functional characteristics of wood pulp paper will not pollute the environment, water resources and air. The newly invented paper is called "stone paper" or "stone paper".
Shike Paper has also obtained invention patents in more than 40 countries around the world. At present, only the United States, Japan, and Taiwan have such technologies, but to achieve the same level of quality, and to have a popular price, today only Taiwan Longmeng enterprises can reach the stage of mass production. In terms of cost, the price of stone paper can be reduced by 30% to 40%, and a large number of purchases are more competitive. In terms of cost, the price of Shike paper is not higher due to factors such as environmental protection and energy-saving products, but in the mass production stage, it can reduce the price by 30% to 40% compared with wood pulp paper.
Because it does not need to use wood pulp and water in the papermaking process, and does not add bleach, strong acid and strong alkali, only resin, stone powder (calcium carbonate) and electricity, no waste and waste gas in the process, it is environmentally friendly. The main features of paper.
3. the process and recycling of Shike paper
Rich Mineral Paper (RMP) is not a wood pulp paper, nor a plastic film. Instead, it grinds stone minerals into powder, plus plastics and additives. The main component is up to 80% of minerals (stone powder). The environmentally-friendly paper produced by this paper is based on the calcium carbonate combined with environmentally-friendly PE material in the white marble mine in Huadong area of Taiwan. The raw materials are compatible with mixing, granulating, film-forming and coating processes, and successfully developed to meet environmental protection requirements. Low-cost, high-quality paper materials can not only replace high-end and high-priced paper products at this stage. In addition, in addition to being fully recyclable and recyclable, this series of papers can be embrittled and decomposed into nature after being exposed to sunlight, and will not cause environmental pollution. Process and recycling process. As shown in Figure 1.
4. the characteristics and types of stone paper
The development of Shike Paper includes safety, physical properties and other characteristics in the paper characteristics. The main feature is that Shike Paper is not only waterproof, anti-fog, oil-proof, insect-proof, etc., but also resistant to tearing and folding in physical properties. Sexually superior to wood pulp paper, and for various characteristics, needs, and future development of the target market, as shown in Table 1.
According to the target market of the above table, the currently developed stone paper has different kinds of paper materials due to the difference in nature, among which four categories include: environmentally friendly paper (RP), synthetic paper (SP), environmentally friendly thick film. (TR) and synthetic thick sheet (TS), high gloss photo paper (JG) and matt photo paper (JM), as shown in Table 2, Figure 2.
Shike paper absorbs ink, inkjet printing will not be etched, but also waterproof, because of the nano-grade stone slurry. Due to the lack of fiber, the stone paper has higher definition after inkjet printing, and has an accuracy of 2880 dpi. In addition, the surface is not coated, and it will not chemically interact with the ink, resulting in color cast and discoloration. Generally, the stone paper has a precision of 720 dpi. The sharpness of the traditional 1440dpi precision.
5. Differences between stone paper, synthetic paper and wood pulp paper
The new wood-free stone paper considers many factors such as environmental cost, raw materials, processability, market acceptance, and future. Although it has not completely replaced the traditional paper market, the printing quality of Shike Paper is similar to that of traditional paper. And have the physical characteristics of synthetic paper, the following will compare the difference between wood pulp paper, synthetic paper and stone paper, as shown in Table 3.
6. Shike Paper's contribution to the environment
Shike Paper is completely dissolved in a small amount of non-toxic resin by a large amount of inorganic mineral powder. The process is environmentally friendly and can be embrittled back to the earth after use. If the recovered paper is sent to the incinerator for incineration, a small amount of non-toxic and harmless resin will not produce black smoke or poison gas after being incinerated, and the remaining inorganic mineral powder can return to the earth and return to nature. Its stone paper contributes to the environment as follows:
(1) Recyclable
After the stone products are used, they can be recycled through plastic products. After collection, they can be pulverized, squeezed and granulated into PE plastic processing. It can produce colored plastic bags, flower pots and plastic barrels. After the stone paper is used as garbage, it is sent to the incinerator for burning. Because it contains a large amount of stone powder and a small amount of non-toxic resin, only non-toxic resin can be burned. When the resin burns, the stone powder will be powdered to promote the contact between the resin and the air, and the resin can be completely burned. Therefore, no black smoke is generated due to lack of oxygen and smoldering during combustion, and no toxic waste gas is burned after the non-toxic resin is burned. The least amount of emissions can slow down the warming of the earth. After the stone paper is used, it is discarded outside, and it will automatically embrittle into a broken eggshell in the sunlight for about six months. It will return to nature (the paper is placed in the room without ultraviolet rays in the sunlight, the resin will not be brittle.
(2) Protecting water resources and energy conservation
Shike Paper has a strong sense of environmental protection. The manufacture of Shike Paper products does not require water washing or strong acid, alkali and bleach. Therefore, there is no problem of wastewater discharge, and it does not pollute water resources such as rivers and seas. The energy consumption of the process is lower than that of traditional wood pulp paper, which helps to improve global warming caused by carbon dioxide (CO2).
7. Conclusion
Shike Paper not only helps to improve the past environmental problems, but also meets the trend of environmental protection in the future. It is believed that it will be the product of the inevitable and widespread application of human science development. At present, it is not possible to completely replace traditional papermaking. The goal is to replace some of the markets. It is more feasible to replace 30% or 40%. Instead of coated paper, newsprint or offset paper, the key lies in the maturity, development and perfection of technology. Stone paper is a brand new product that is really popular in the market and is expected to wait a few years.