Environmental paper

In the United States, from Los Angeles, San Francisco, and San Diego in the west to New York, Washington, and Philadelphia in the east, there are many shops, dried fruit stalls, and restrooms that use a lot of exhausted yellow paper as packaging bags and paper towels. use. What they call eco-paper is recycled paper.
In mainland China, people are no strangers to recycled paper. It is the use of recycled waste paper, after appropriate processing and then copied into paper. As early as over a thousand years ago, there was a so-called "rejuvenation paper" in the Song Dynasty in China. In today's words, Renewal Paper is recycled paper. Song Yingxing, a scientist of the Ming Dynasty, wrote in his book “Heavenly Creation”: “The waste paper is decontaminated, rotted, and rewred... it still turns into paper, and it consumes too little.”
There are many advantages to making paper from waste paper. According to calculations, using one ton of waste paper and re-papermaking each time, it can save about 500 kilograms of fiber raw materials; 150 kilograms of caustic soda, save electricity 360 degrees; save 350 kilograms of coal; reduce water use more than 120 tons. In addition, it is particularly important to make full use of resources to protect the ecological environment and bring benefits to papermaking companies. Therefore, waste paper has become one of the raw material sources for the paper industry, and it has attracted increasing attention.
The fibers of waste paper are not wasted. The fibers of the paper itself are said to be printed or written paper, but only some particles of carbon black (or other pigments) and particles of adhesive are attached to the surface of the paper fiber, if these are managed Scrubbing particles is like washing dirty clothes. Then, the clean fiber obtained can still be renewed for papermaking, achieving the purpose of refurbishing the old. Since there are many types of plant fibers used for papermaking, such as conifer (softwood) fiber, hardwood (hardwood) fiber, bamboo fiber, straw straw fiber, bagasse fiber, rayon fiber, cotton fiber, bark fiber, hemp fiber, etc. . In addition, during the papermaking process, they are subjected to certain chemical (cooking, bleaching) and mechanical (beating) effects, so it cannot be mistaken for the endless recycling of waste paper fibers.
According to the papermaking expert's analysis and research, generally speaking, the frequency of reuse of coniferous fibers is high and can reach more than 5 times (intensity decreases to 8 times). Hardwood fibers (short fibers) are 3 times; grass fibers can only be reused 2 times. Cotton fiber and hemp fiber can be reused more than 10 times, but they are not used in papermaking. Fiber in waste paper can not be regarded as waste on the one hand, but it should be baby. On the other hand, how to make better use of it remains to be further studied. Waste paper utilization problems After years of publicity and practice, everyone has greatly improved the awareness of waste paper recycled paper (recycled paper). However, there is a large gap between the recovery rate and utilization rate of waste paper in various countries and regions. The so-called waste paper recovery rate refers to the amount of paper waste recovered in a certain area, a certain period of time, and the amount of wasted paper. Therefore, the recovery rate of waste paper depends on the amount of consumption and is only indirectly related to the production volume. The utilization rate of waste paper is the proportion of waste paper that has been re-used for production.
Why do some countries (such as Germany, Japan) have high waste paper recycling rates? The main point is to see if the recycling system is perfect; whether the recycling channels are unimpeded. This is the problem of waste paper recycling.
In Tokyo, Japan, it has vigorously promoted the benefits of recycling waste paper, and provided free entertainment for residents to watch movies (such as paper applications, waste paper recycling and recycling), mobilize papermaking, printing, and other media through television, radio and newspapers. The staff of the packaging and publishing company and the primary and middle school students are obligated to purchase waste paper, and dispose of garbage. Three-wheeled motorcycles were dispatched to transport waste paper and collective collection was implemented. Osaka, Japan has also come up with a clever way. When it comes to recycling waste paper, in addition to paying cash, every 10 kilograms is returned for a prize ticket. If a lottery is won, another generous reward is received. This method also closes. To a good result.

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