Paper-based meals are dominant, and the situation is quite serious. To truly eliminate "white pollution", the disposable and one-time degradable paper-based meal is divided into pulp-molded type meal and paper path, which should cause each The government and relevant departments attach great importance to the coated film type meal. The tableware of this kind is characterized by non-toxic and tasteless, reliable quality, easy to return I disposable foam plastic tableware, recyclable, and good degradation performance. Starting from its investment market. Foam plastics are easy to cause "white pollution" and have been widely concerned at home and abroad, causing some people to think that paper tableware will become "white pollution" mainly refers to agricultural film, plastic film for packaging, plastic for foam tableware in the true sense. The replacement of product bags and disposable foam plastic tableware is free to discard or create environmental pollution. The main raw material for the production of pulp molded plastic tableware disposable foam plastic tableware is polystyrene or grass plants such as reeds and wheat straw. Or wood pulp as the main raw material, in the mold of ethylene, these two kinds of, bamboo shoots in the natural conditions are extremely difficult to degrade, so it is also known as one-time molding, for dry sweat can be the current such meal has been produced nationwide The company has a hundred times of inability to decontaminate plastic tableware. There are two main problems. One is to recycle the rest. From the recycling situation in other countries abroad, the situation is not rational, the production is high, and recycling is difficult. The plant fiber molded tableware is made from wheat straw, straw, straw, peanut shell, bagasse, etc. Get clean plant fiber, then mix the right amount of adhesive and various additives, mix well and then inject into the mold to form under high temperature and high pressure. The product is not only degradable, but also can be directly used as feed after pulverization. At the same time, the product is strong enough to be used in microwave ovens and on water. Plant fiber type price is unique in China. Although it is relatively easy to start, it has a rapid development rate and currently has an annual production capacity of nearly 2 billion. Plant starch molded tableware is made from plant starch such as wheat, corn, potato, sweet potato and cassava, and is added with special additives. It is pressed by chemical and physical methods. Because starch is a biodegradable natural polymer, it will be decomposed into grape vines under the action of microorganisms, and finally turned into water and carbon dioxide without any pollution to the environment. In addition, the material blended therewith is also a fully degradable material, so that the snack box made of this material has excellent degradation performance. Degradable plastic tableware Degradable plastic is a certain amount of additives added in the production process of plastics (PE, P, Xing, etc.), mainly including starch and non-starch. It uses four decomposition methods, namely biodegradation and oxidation. Degradation, photodegradation and water solubility degradation. After being discarded after being used in nature for a few months, it can be cracked into pieces by intact shape after being discarded in nature, and the degradation performance is improved to some extent, at least visually improving the environment. . At present, degradable plastic tableware is the most large-scale production of foamed plastic tableware substitutes in addition to pulp-molded tableware. There are dozens of production lines in the country with an annual production capacity of more than 3 billion. Several environmentally-friendly tableware silicon-calcium composite disposable tableware is being developed. This is a new type of environmentally-friendly tableware developed by Hunan Acidling Lisheng Ceramics Factory. It looks like porcelain and is actually muddy. The main raw material is natural clay, and the production method is similar to that of porcelain production. After being discarded, it can be deliquescent and weathered, and integrated with the soil. The product is non-toxic, tasteless, mildewed, white in color, and has no “three wastes†in the production process. It has been listed as a national key new product trial production plan by the State Economic and Trade Commission. The new composite tableware Shanghai Zhenzhong Food Packaging Materials Co., Ltd. has been successfully researched for several years. The natural plant fiber and natural inorganic salt composite material process and its application technology have recently been recognized as new technology by the Shanghai Science and Technology Commission. The pulp molded tableware produced by this process can reduce the overall cost by 50% and does not cause any pollution to the environment. The application prospects are very broad. Corn foam tableware This kind of tableware produced by Beijing Jieye Wild Biotechnology Development Co., Ltd., the main raw material is corn or corn slag, which is converted into corn foam by flashing and ordering technology, so that the molecular arrangement of starch is ordered. Changed and then cold-formed, the product has passed the test of the National Quality Supervision Center, and all indicators are in line with national standards. Advantages of various environmentally-friendly tableware and main problems existing After the elimination of E-cell foaming tableware, which of the existing alternative products is more in line with environmental protection requirements, which product can finally stand firm in the fierce competition and ultimately As a mainstream product, many experts and scholars are hard to decide. This is because all kinds of environmentally-friendly tableware have their own advantages, but there are also obvious defects or deficiencies. Compared with other environmentally-friendly tableware, paper-made tableware is favored in the disposable tableware market due to its characteristics of easy degradation, easy recycling, recycling of raw materials, and relatively low cost. However, from the whole process of the production of paper tableware, the product is also obviously insufficient.
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