Home Uncategorized A triangle at the bottom of the beverage bottle says “1”. What does this pattern mean?

A triangle at the bottom of the beverage bottle says “1”. What does this pattern mean?

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Yes, this represents the number of times of use. 1 means this is one-time. 2 means it can be used twice at most. If it exceeds the number of times of use, the bottle may produce toxins, which is harmful to human body

mark 1 is pet polyethylene terephthalate ­ Common mineral water bottles, carbonated beverage bottles, etc. Heat resistant to 70 ℃, easy to deform, and substances harmful to human body melt out. No. 1 plastic may release carcinogen DEHP after 10 months of use. Do not put it in the sun in the car; Do not contain alcohol, oil and other substances ­ There are other numbers in my space. You can have a look ­
anyone who has studied chemistry in the third year of junior high school knows that the symbols inside the triangle represent the types of plastics. The following is a detailed introduction

======================================================================================================================, With a digital logo, they attached triangular recycling labels to plastic products, and used numbers 1 to 7 and English abbreviations to refer to the type of resin used in plastics. In this way, the identification of plastic varieties has become simple and easy, and the recovery cost has been greatly reduced. Nowadays, many countries in the world have adopted this SPI marking scheme. China formulated almost the same marking standard in 1996

the first goal of plastic packaging waste treatment is to recycle containers as resources, so as to protect limited resources and complete the recycling of packaging containers. Among them, 28% of pet (polyethylene terephthalate) bottles for carbonated drinks can be recycled, and PE-HD (high density polyethylene) milk bottles and PE-HD water bottles can also be effectively recycled
in order to facilitate the recycling of various post consumer plastic products, it is necessary to sort various plastics. Due to the many and complex plastic consumption channels, some post consumer plastics are difficult to distinguish them simply by appearance. Therefore, it is best to mark the material variety on the plastic products. What are the uses, advantages and disadvantages of different codes? The following contents will help you understand these:

Plastic name ———- code and corresponding abbreviation code are as follows:

polyester —— 01 pet (treasure bottle), such as mineral water bottle and carbonated beverage bottle

do not recycle beverage bottle. Fill hot water
use: heat resistant to 70 ℃, only suitable for warm or frozen drinks. When filling high-temperature liquid or heating, it is easy to deform, and substances harmful to human body melt out. In addition, scientists found that No. 1 plastic may release carcinogen DEHP after 10 months of use, which is toxic to testis
therefore, drink bottles should be discarded when they are used up. They should not be used as water cups or storage containers to hold other items, so as not to cause health problems

high density polyethylene-02-hdpe, such as cleaning products and bath products

it is recommended not to recycle them if they are not thoroughly cleaned
use: they can be reused after careful cleaning, but these containers are usually difficult to clean, leaving the original cleaning products and becoming a warm bed for bacteria. You’d better not recycle them

polyvinyl chloride — 03 PVC, for example, some decorative materials

use: this material is easy to produce harmful substances at high temperature, and even it will be released during the manufacturing process. After the toxic substances enter the human body with food, they may cause breast cancer, neonatal congenital defects and other diseases. At present, the containers of this material have been less used to package food. If in use, do not let it be heated

low density polyethylene – 04 LDPE, such as fresh-keeping film, plastic film, etc.

do not wrap the fresh-keeping film on the surface of food into the microwave oven
use: the heat resistance is not strong. Generally, the qualified PE fresh-keeping film will melt when the temperature exceeds 110 ℃, leaving some plastic preparations that cannot be decomposed by the human body. Moreover, wrap the food with plastic wrap and heat it. The oil in the food can easily dissolve the harmful substances in the plastic wrap. Therefore, when putting food into the microwave oven, first remove the wrapped preservative film

polypropylene —— 05-pp (able to withstand temperatures above 100 ℃) such as: microwave oven lunch box

remove the cover when putting it into the microwave oven
use: the only plastic box that can be put into the microwave oven can be reused after careful cleaning. It should be noted that for some microwave oven lunch boxes, the box body is indeed made of No. 5 PP, but the box cover is made of No. 1 PE. Because PE cannot withstand high temperature, it cannot be put into the microwave oven together with the box body. To be on the safe side, remove the lid before putting the container into the microwave oven

polystyrene – 06-ps (heat resistant 60-70 degrees, hot drinks will produce toxins, and styrene will be released when burning) such as: bowl instant noodles box and fast food box

don’t cook bowl instant noodles in microwave oven
use: it is heat-resistant and cold resistant, but it can’t be put into microwave oven to avoid releasing chemicals due to too high temperature. And can not be used to carry strong acids (such as orange juice) and strong alkaline substances, because it will decompose polystyrene which is bad for human body and is easy to cause cancer. Therefore, you should try to avoid packing hot food in fast food boxes

other plastic codes – 07 others, such as kettle, water cup and milk bottle

PC glue is used in case of heat-release bisphenol A
use: it is a material widely used, especially in milk bottles, which is controversial because it contains bisphenol A. Lin Hanhua, an associate professor of biology and chemistry at the City University of Hong Kong, said that in theory, as long as bisphenol A is 100% converted into plastic structure in the process of making PC, it means that the product has no bisphenol A at all, let alone release it. However, if a small amount of bisphenol A is not converted into the plastic structure of PC, it may be released into food or drinks. Therefore, be careful and pay special attention when using this plastic container

cleaning measures for bisphenol A:
the higher the temperature, the more and faster the release of bisphenol A in PC. Therefore, do not use PC water bottle to hold hot water, so as not to increase the release rate and concentration of bisphenol A (if any). If your kettle is numbered 7, the following methods can reduce the risk:
● do not heat it when using it
● do not use dishwasher or dryer to clean the kettle
● keep the kettle out of direct sunlight
● before the first use, wash with baking soda powder and warm water and dry naturally at room temperature. Because bisphenol A will release more when used for the first time and for a long time
● if the container has any falling injury or damage, it is recommended to stop using it, because if there are fine pits on the surface of plastic products, it is easy to hide bacteria
● avoid repeated use of aged plastic appliances

PP, PE and PVC are abbreviations of English names. The Chinese names are polypropylene, polyethylene and polyvinyl chloride, and the full English names are,,, polyvinyl chloride

some of our common old-fashioned slippers are made of PVC. They are soft in summer and hard in winter, which has a lot to do with the temperature sensitivity of PVC. PVC will decompose the toxic gas chlorine at high temperature. Among the three, PVC has the highest density

ordinary plastic bags are made of PE, which has good toughness. PE is also divided into HDP
E (high density polyethylene) and LDPE (low density polyethylene). The different density leads to great differences in some properties

PP is a relatively safe plastic among plastics. Generally, it is used to make food packaging bags. Of course, PP also has grades, and food packaging must be food grade. PP has the lowest density among the three and can float on the water

like these polymer materials, some other materials can be added to modify them to make them superior in overall performance or in one aspect for special purposes. Of course, the price will be greatly increased after modification

toxic and non-toxic plastic bags can be detected by the following methods:

sensory detection method: non-toxic plastic bags are milky white, translucent, or colorless and transparent, flexible, feel lubricated, and appear to have wax on the surface; The toxic plastic bag is turbid or light yellow in color and feels sticky

water detection method: put the plastic bag in the water and press it into the bottom. The proportion of non-toxic plastic bag is small and can surface. The proportion of toxic plastic bag is large and sink

shake detection method: hold one end of the plastic bag with your hand and shake hard. Those who make a crisp sound are non-toxic; A dull voice is poisonous

fire detection method: the non-toxic polyethylene plastic bag is flammable, with blue flame and yellow top. It drips like candle tears when burning, with paraffin smell and less smoke; Toxic PVC plastic bags are nonflammable and extinguished immediately after leaving the fire. The flame is yellow and the bottom is green. They can be softened and brushed, with the pungent smell of hydrochloric acid.

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