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With China Plastic Machinery
The plastic recycling logo was developed by the American Plastic Industry Association in 1988. This logo prints the plastic material identification code on the container or packaging, from No. 1 to No. 7, so that people can simply join the recycling work without having to bother to learn the differences and similarities of various plastic materials. Each plastic container has a small ID card - a triangular symbol, usually at the bottom of the plastic container. There are numbers 1 to 7 in the triangle, and each number represents a plastic container. They are made of different materials and have different taboos in use.
PET (polyethylene terephthalate), a container made of this material, is a common plastic bottle for soda, also commonly known as "PET bottle".
Common mineral water bottles, carbonated beverage bottles, etc. Heat-resistant to 70¡æ, easy to deform, and substances harmful to the human body melt out. After using No. 1 plastic for 10 months, it may release the carcinogen DEHP. Do not place in the car in the sun; do not put alcohol, oil and other substances
HDPE (high-density polyethylene), containers for detergents, shampoo, shower gel, cooking oil, pesticides, etc. are mostly made of HDPE. The containers are mostly opaque and feel like wax.
Common white medicine bottles, cleaning supplies, bath products. Do not use them as water cups or storage containers for other items. Do not recycle if they are not cleaned thoroughly.
PVC (polyvinyl chloride), mostly used to make water pipes, raincoats, school bags, building materials, plastic films, plastic boxes and other objects.
Common raincoats, building materials, plastic films, plastic boxes, etc. It has excellent plasticity and is cheap, so it is widely used. It can only withstand heat of 81¡ãC. It is easy to produce bad substances at high temperatures and is rarely used for food packaging. It is difficult to clean and easy to leave residues, so do not recycle. Do not buy it if it is used to hold drinks.
LDPE (Low-density polyethylene), the plastic bags you see everywhere are mostly made of LDPE.
Common cling film, plastic film, etc. Harmful substances are produced at high temperatures. After the toxic substances enter the human body with food, they may cause breast cancer, congenital defects and other diseases. Do not put cling film into the microwave.
PP (polypropylene), mostly used to make buckets, trash cans, baskets, baskets and microwave food containers, etc.
(Common soy milk bottles, yogurt bottles, juice bottles, microwave lunch boxes. They can withstand temperatures up to 167¡ãC and are the only plastic boxes that can be put into a microwave oven. They can be reused after careful cleaning. It should be noted that some microwave lunch boxes are made of No. 5 PP, but the lid is made of No. 4 PE. Since PE cannot withstand high temperatures, it cannot be put into the microwave oven together with the box body.)
PS (polystyrene), due to its low water absorption, is mostly used to make building materials, toys, stationery, rollers, and cups or disposable tableware for fast food restaurants.
(Common bowls of instant noodle boxes and fast food boxes. They cannot be put into a microwave oven to avoid releasing chemicals due to excessive temperatures. After being filled with acids (such as orange juice) and alkaline substances, carcinogens will be decomposed. Avoid using fast food boxes to pack hot food. Don't use a microwave to cook bowls of instant noodles.)
Others. (Common PC types, such as kettles, space cups, and baby bottles. Department stores often use water cups made of this material. PA types, namely nylon, are mostly used for fiber textiles and some home appliances. PC is easy to release toxic substances such as bisphenol A under high temperature, which is harmful to the human body. Do not heat it when using it, and do not expose it to direct sunlight.)
In modern life, we are exposed to a variety of plastic products every day, such as plastic shopping bags, plastic cups, plates, plastic baby bottles, etc. However, we may not know that these plastic products are made of different resin materials, and different resin materials may precipitate toxic and harmful substances under different temperature, humidity and other conditions, which is unsafe. So how can we understand the characteristics of various materials and use them safely? According to relevant Chinese experts, the plastic recycling logo currently used internationally and China has also begun to use it can help us understand the production materials of plastic products and their use conditions, and guide us to use them healthily. When the number is greater than or equal to 5, it means that the plastic container can be recycled.
The recycling mark is also a health certificate
Experts said that the plastic recycling mark is a triangular symbol, usually at the bottom of the plastic container. There are numbers from 1 to 7 in the triangle, and each number represents a different material. Therefore, different numbers in the recycling mark indicate what kind of resin the product is made of. If the product is made of several different materials, the main and basic materials of the product are indicated. It is said that this set of marks originated from the United States. Now this marking method has been accepted and cited by many countries including China.
Different materials have different use conditions
The small recycling mark at the bottom of the plastic product is like a small ID card for each plastic container. They are made of different materials and have different uses.
"01"-PET (polyethylene terephthalate) mineral water bottles and carbonated beverage bottles are made of this material. Dong Jinshi pointed out that beverage bottles cannot be recycled to hold hot water. This material is heat-resistant up to 70¡æ and is only suitable for warm or frozen drinks. It is easy to deform when filled with high-temperature liquids or heated, and substances harmful to the human body are dissolved. Moreover, scientists have found that this type of plastic product may release carcinogens after 10 months of use, which is toxic to the human body. Therefore, throw away beverage bottles after use, and do not use them as water cups or storage containers for other items, so as not to cause health problems that are not worth the loss.
"02" - HDPE (high-density polyethylene) Plastic containers for cleaning products and bath products. Most of the plastic bags currently used in supermarkets and shopping malls are made of this material, which can withstand high temperatures of 110¡ãC. Plastic bags marked for food can be used to hold food. Plastic containers for cleaning products and bath products can be reused after careful cleaning, but these containers are usually difficult to clean, and the original cleaning products remain, becoming a breeding ground for bacteria. If the cleaning is not thorough, it is best not to recycle them.
"03" - PVC (polyvinyl chloride) It is reported that the toxic and harmful substances easily produced by plastic products of this material come from two aspects. One is the single molecule of vinyl chloride that is not completely polymerized during the production process, and the other is the harmful substances in the plasticizer. These two substances are easy to precipitate when encountering high temperature and grease. After the toxic substances enter the human body with food, they are easy to cause cancer. At present, containers of this material are rarely used to package food. If used, never let it heat up.
"04"-LDPE (low-density polyethylene) cling film, plastic film, etc. are all made of this material. The heat resistance is not strong. Usually, qualified PE cling film will melt when the temperature exceeds 110¡æ, leaving some plastic preparations that cannot be decomposed by the human body. In addition, when food is wrapped in cling film and heated, the grease in the food can easily dissolve the harmful substances in the cling film. Therefore, when food is put into the microwave, the cling film wrapped around it must be removed first.
"05"-PP (polypropylene) microwave lunch box is made of this material, which can withstand high temperatures of 130¡æ and has poor transparency. This is the only plastic box that can be put into the microwave and can be reused after careful cleaning. It is important to note that some microwave lunch boxes are made of 05 PP, but the lid is made of 06 PS (polystyrene). PS has good transparency, but is not resistant to high temperatures, so it cannot be put into the microwave together with the box. To be on the safe side, remove the lid before putting the container into the microwave.
"06" - PS (polystyrene) This is the material used to make bowl-shaped instant noodle boxes and foam fast food boxes. It is heat-resistant and cold-resistant, but it cannot be put into the microwave to avoid releasing chemicals due to excessive temperature. And it cannot be used to hold strong acids (such as orange juice) and strong alkaline substances, because it will decompose polystyrene that is not good for the human body. Therefore, you should try to avoid using fast food boxes to pack hot food.
"07" - PC and other types of PC is a material that is used in large quantities, especially in the manufacture of baby bottles, space cups, etc., and is controversial because it contains bisphenol A. Experts point out that, in theory, as long as bisphenol A is 100% converted into plastic structure during the production of PC, it means that the product does not contain bisphenol A at all, let alone release. However, if a small amount of bisphenol A is not converted into the plastic structure of PC, it may be released and enter food or drinks. Therefore, you should be extra careful when using this plastic container. The higher the temperature of the residual bisphenol A in PC, the more and faster it will be released. Therefore, PC water bottles should not be used to hold hot water. If your kettle is numbered 07, the following methods can reduce the risk: Do not heat it during use and do not expose it to direct sunlight. Do not use a dishwasher or dishwasher to clean the kettle. Before the first use, wash it with baking soda and warm water, and dry it naturally at room temperature. If the container has any bruises or damage, it is recommended to stop and not use it again, because if there are fine pits on the surface of plastic products, it is easy to hide bacteria. Avoid repeated use of aging plastic utensils.
In foreign countries, the classification and labeling of plastic products play a very important role. All plastic manufacturers in Europe, America, Japan and other countries classify plastic products according to ISO11469 international standards, and plastic products that do not meet the standards are not allowed to enter the market. However, this is impossible in China at present.
The main reason why the role of plastic product labels in China and abroad is so different is the market environment. Such standards in developed countries only need to tell companies what to do, and give companies a standard of operation with a unified logo. They have very complete laws and regulations on environmental protection, and have detailed regulations and specific management methods for garbage recycling. If companies do not implement such standards, they will be severely punished.
However, in China, there are neither corresponding environmental protection laws and regulations nor clear supervisory departments to supervise. Therefore, although the country issued such a standard as early as 1996, and according to the requirements of the standard, the investment required for companies to add corresponding logos to their products is very small, which can be ignored in the overall cost, but for many years, almost no companies have implemented this standard.
The material logo of plastic products required by the national standard "Plastic Packaging Product Recycling Mark" that China began to implement as early as 1996. The main purpose of this standard is to distinguish the materials of plastic products through different logos for easy recycling.
The code, size and color of the logo.
Plastic name code Plastic abbreviation code Polyester 01 PET,
High density polyethylene 02 HDPE,
Polyvinyl chloride 03 PVC,
Low density polyethylene 04 LDPE,
Polypropylene 05 PP,
Polystyrene 06 PS,
Other plastic 07.
Length: 40mm
Width: 40mm
In case of extra large or extra small packages, the size of the logo can be appropriately enlarged or reduced according to this regulation.
The size of the logo must be proportional to the size of the package.
should be printed in monochrome, generally in green. If
the color of the package makes the green logo unclear, an appropriate contrasting color can also be used.
should be placed in a place that is easily visible to consumers and should not cover the product inside.
The number of logos: only one logo is marked on each package.
The national standard refers to the international standard ISO11469?2000 "Identification and marking of plastic products". The plastic raw materials used in plastic products, including general plastic, engineering plastic, functional plastic, degradable plastic, antibacterial plastic, recycled materials, etc., must be marked and marked. The new national standard also adds more than 200 kinds of plastic raw materials, adds requirements for the identification and marking of plastic for food packaging and medical plastic, and adds functional and supplementary instructions to the logo, and requires that the proportion of recycled materials in the raw materials must be marked. It is particularly worth mentioning that the logo patterns required by the national standard are vivid and more humane. For example, a pattern of two arrows pointing in opposite directions means that the product can be reused. With similar patterns, anyone with a basic level of education can judge the "origin" and "destination" of the plastic product in their hands from these specific and vivid logos. This simple and clear logo solves the difficulty of people identifying plastic materials, which can not only promote the classified disposal and collection of waste plastic, but also save the manpower, material resources and funds required for sorting and classification, and has far-reaching significance for reducing the amount of domestic waste and eliminating "white pollution".
It is often seen that people like to use used beverage bottles and mineral water to hold tea. Some consumers also argue that doing so is "environmentally friendly" and "saving". However, a few days ago, Dong Jinshi, vice president of the Plastic Recycling Professional Committee of the China Plastic Association, reminded in an interview with reporters that it is not advisable to reuse plastic bottles, otherwise high-temperature water and acidic solutions will easily dissolve the harmful substances inside, which will be harmful to human health.
In daily life, it is common to find that beverage bottles and mineral water bottles are reused. Many consumers often like to keep their used beverage bottles and mineral water bottles, and fill them with tea or drinking water when they go out next time, and openly call this "environmental protection" and "saving". Dong Jinshi said that qualified beverage bottles and mineral water bottles are required to be made of food-grade plastic, that is, PET bottles. These food-grade PET bottles cannot withstand high temperatures and need to be used at low temperatures. Generally, they are safe to use below 70 degrees Celsius. In addition, these plastic bottles are disposable, and the state stipulates that enterprises cannot recycle and reuse them.
Jiang Zhuoqin, professor and director of the Department of Nutrition at the School of Public Health of Sun Yat-sen University, also pointed out that plasticizers are added to plastic bottles during the production process, and this chemical component is toxic to the human body. If plastic bottles are used to hold drinking water, oil, wine and other substances for a long time, it is easy to dissolve the harmful substances inside and bring them into the human body. He suggested that it is relatively safe to use bottles made of glass, stainless steel and other materials to hold food.
The numbers on the bottom of plastic bottles have nothing to do with safety
It is rumored that some plastic bottles are safe and can be reused. Whether a plastic bottle is safe to reuse can be identified by the mark on the bottom of the bottle. Some netizens said that many beverage bottles, mineral water bottles, etc. have a triangle with an arrow on the bottom. There is a number in the triangle. If the number is "05" or above, it can be recycled, and the larger the number, the safer it is. "Generally, the bottom of the mineral water bottle is marked with 01; the bottom of the plastic heat-resistant cup for making tea is marked with 05; the bottom of the creamer bottle is marked with 02; the bottom of the yogurt bottle is marked with 02..." As soon as this post was released, it caused heated discussion among netizens. Some people agreed, while others doubted its authenticity.
The number marked on the bottom of the plastic bottle has nothing to do with whether the bottle is "safe". The triangle symbol is a plastic recycling symbol. There are numbers from 1 to 7 in the triangle, and each number represents a different material. If the product is made of several different materials, the main and basic materials of the product are marked. It is not mandatory to label plastic products with recycling marks. Some regular large brand companies have recently begun to label plastic products with recycling marks to facilitate recycling. Experts believe that although this mark is mainly for the convenience of recycling, consumers can also use this mark to know what materials the plastic products are made of and in what environment they should be used.
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