Some "environmentally friendly" tableware are not environmentally friendly. Some green tableware are also subject to high cost. What kind of environmental protection tableware has more promotion value? There are different opinions. Whether a product introduced here has promotion value or not, and it is hoped that people in the industry will also Commentary -
In the early 1980s, with the fast pace of modern life and people’s thirst for health care, developed countries such as the United States and Japan have widely used disposable polystyrene foam tableware, and soon they created cheaper polypropylene and poly. Ethylene foam tableware, which is popular with the catering industry and consumers. It is undeniable that the development and evolution of tableware is a reflection of the level of science and technology and the level of civilization in the level of science and technology and civilization, a sign of the advancement of materials science and an improvement in the level of health care.
First, the status quo of alternatives Taiwan Province of China first used a fast-growing rice or millet, in the mold after heating 150 °C after the pressure, although you can shape, but the appearance of too many spots, and not resistant to boiling water, etc., so can not Continue to develop.
In Europe, the United States, Japan, and other countries with the development of modern food industry, food packaging technology is changing with each passing day. One type of new food packaging technology and materials that can perfectly resolve the contradiction between packaging materials and environmental protection - food edible packaging emerges. In the recent 3-5 years, food edible packaging materials developed and developed in many countries in the world are generally based on the proteins, fats and carbohydrates that can be digested and absorbed by the human body as a raw material basis, and are manufactured into a product that does not affect the flavor of the packaged food. No (transparent) food packaging film.
The U.S. Agricultural Research Institute’s Southern Regional Research Center uses soybean-derived proteins to produce plastic film-like materials that replace plastic films previously synthesized using petroleum as raw materials. Its production technology is: first soak soybeans with water for 12 hours, grind them after the tissue is softened, separate proteins from solid components, and mix them with various additives harmless to the human body after drying. Become an edible film or coating with many uses for food packaging, both good strength, elasticity and moisture resistance, but also a certain degree of antibacterial disinfection.
The California Agricultural Technology Research Center has also successfully developed an edible packaging film for fruit packaging. The edible packaging film for fruits is an edible plastic film produced by combining chitosan, an extract of shrimps, crabs, insects and other crustaceans, and lauric acid with 12 carbon atoms. About 0.2 mm, the transparency is great, not only can achieve the purpose of preservation, but also difficult to be perceived by consumers, so as to avoid unnecessary concerns.
In Japan, two kinds of edible wrapping papers have been developed in recent years. One is the use of corn or potato starch as raw material, adding other edible substances, processing and manufacturing into rice paper; the other is also using chitosan extracted from crustacean as raw material, processed and packaged. Paper, fast food noodles, rice, seasonings, soy products, fish, and the like packaged in these two types of edible wrapping papers can be directly put into a pan for cooking without removing the packaging bag. An Australian food container company recently successfully developed a container for edible fried potato chips. The material used to make this kind of container is not only edible, but after eating the fried potato chips in the container, the container can be eaten beautifully. It is said that this edible container is now used at 45,000 chips in the country.
In May 2001, a U.S. company produced thermoplastic starch plastic cups, which were sold nationwide and globally. The cost was extremely high. A lunch box cost 40 cents and was sold at 50 cents - not in line with China's national conditions.
Although all of the above edible packagings are fully degraded or edible, they unfortunately are limited to packaging cold and dry foods, some are too costly, and some do not meet the basic requirements for fast food utensils: they must be fully degraded. Fast degradation, but also resistant to water, heat-resistant oil, acid vinegar. However, according to recent media reports about the research of replacing foamed plastic products, some improvements have been made, but there are still trade-offs, such as:
1.PE coated cardboard cutlery Due to the non-degradable polyethylene (PE) film coated on the surface of the paperboard used to produce PE coated cardboard cutlery, the paper fibers in the cutlery are easily degraded and rot in the natural environment. There are PE films that make up 5% to 10% of the total product. Therefore, PE laminated paperboard cutlery is not yet a completely degradable tableware, and this kind of paperboard is mainly produced from wood as raw material, which will result in the waste of forest resources, which is inconsistent with the country’s current policy of returning farmland to forests (grass). , And the cost is higher. (To be continued)
In the early 1980s, with the fast pace of modern life and people’s thirst for health care, developed countries such as the United States and Japan have widely used disposable polystyrene foam tableware, and soon they created cheaper polypropylene and poly. Ethylene foam tableware, which is popular with the catering industry and consumers. It is undeniable that the development and evolution of tableware is a reflection of the level of science and technology and the level of civilization in the level of science and technology and civilization, a sign of the advancement of materials science and an improvement in the level of health care.
First, the status quo of alternatives Taiwan Province of China first used a fast-growing rice or millet, in the mold after heating 150 °C after the pressure, although you can shape, but the appearance of too many spots, and not resistant to boiling water, etc., so can not Continue to develop.
In Europe, the United States, Japan, and other countries with the development of modern food industry, food packaging technology is changing with each passing day. One type of new food packaging technology and materials that can perfectly resolve the contradiction between packaging materials and environmental protection - food edible packaging emerges. In the recent 3-5 years, food edible packaging materials developed and developed in many countries in the world are generally based on the proteins, fats and carbohydrates that can be digested and absorbed by the human body as a raw material basis, and are manufactured into a product that does not affect the flavor of the packaged food. No (transparent) food packaging film.
The U.S. Agricultural Research Institute’s Southern Regional Research Center uses soybean-derived proteins to produce plastic film-like materials that replace plastic films previously synthesized using petroleum as raw materials. Its production technology is: first soak soybeans with water for 12 hours, grind them after the tissue is softened, separate proteins from solid components, and mix them with various additives harmless to the human body after drying. Become an edible film or coating with many uses for food packaging, both good strength, elasticity and moisture resistance, but also a certain degree of antibacterial disinfection.
The California Agricultural Technology Research Center has also successfully developed an edible packaging film for fruit packaging. The edible packaging film for fruits is an edible plastic film produced by combining chitosan, an extract of shrimps, crabs, insects and other crustaceans, and lauric acid with 12 carbon atoms. About 0.2 mm, the transparency is great, not only can achieve the purpose of preservation, but also difficult to be perceived by consumers, so as to avoid unnecessary concerns.
In Japan, two kinds of edible wrapping papers have been developed in recent years. One is the use of corn or potato starch as raw material, adding other edible substances, processing and manufacturing into rice paper; the other is also using chitosan extracted from crustacean as raw material, processed and packaged. Paper, fast food noodles, rice, seasonings, soy products, fish, and the like packaged in these two types of edible wrapping papers can be directly put into a pan for cooking without removing the packaging bag. An Australian food container company recently successfully developed a container for edible fried potato chips. The material used to make this kind of container is not only edible, but after eating the fried potato chips in the container, the container can be eaten beautifully. It is said that this edible container is now used at 45,000 chips in the country.
In May 2001, a U.S. company produced thermoplastic starch plastic cups, which were sold nationwide and globally. The cost was extremely high. A lunch box cost 40 cents and was sold at 50 cents - not in line with China's national conditions.
Although all of the above edible packagings are fully degraded or edible, they unfortunately are limited to packaging cold and dry foods, some are too costly, and some do not meet the basic requirements for fast food utensils: they must be fully degraded. Fast degradation, but also resistant to water, heat-resistant oil, acid vinegar. However, according to recent media reports about the research of replacing foamed plastic products, some improvements have been made, but there are still trade-offs, such as:
1.PE coated cardboard cutlery Due to the non-degradable polyethylene (PE) film coated on the surface of the paperboard used to produce PE coated cardboard cutlery, the paper fibers in the cutlery are easily degraded and rot in the natural environment. There are PE films that make up 5% to 10% of the total product. Therefore, PE laminated paperboard cutlery is not yet a completely degradable tableware, and this kind of paperboard is mainly produced from wood as raw material, which will result in the waste of forest resources, which is inconsistent with the country’s current policy of returning farmland to forests (grass). , And the cost is higher. (To be continued)
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