Many people have a lot of good habits of environmental protection, such as corrugated boxes, plastic bottles will be collected and sold to the waste recycling station. For many plastic products, it is also possible to reuse them as much as possible. Plastic bottles can be used to hold common grains such as soybeans and mung beans. It can play a very good sealing effect and can also be very good insect and moisture protection. However, the reuse of plastic bottles should be careful not to let the harmful substances of plastic affect you.
Many people said that plastic bottles have a small triangle of circulation logo, which is a sign that can be recycled, ah, so is it not right? In fact, the small triangle at the bottom is a set of logos formulated in 1988. It only means that this plastic can be recycled, but it does not mean that it can be used repeatedly when it is used.
In addition to the small triangle, pay attention to the numbers in the small triangle. Different numbers represent different plastic compositions and different uses.
Want to see if the plastic can be reused - look for 7 and 5
No. 5 is often used for tableware in contact with food. Common crisper boxes, crisper boxes that can be heated in the microwave oven, etc. The main component of this plastic is polyethylene. It can withstand temperatures up to 130°C. It is a plastic that is very suitable for holding food. Of course, this material can also be reused.
No. 7 is commonly used in water cups, bottles, etc. The main ingredient is pc, this plastic is highly impact resistant and not easy to break. The use temperature is relatively wide, and it is a good plastic suitable for daily use. At the same time, in many industrial fields, because of its excellent physical properties, some PCs can also withstand high temperatures, fire protection, wear and scratch resistance are also widely used.
Of course, when reusing, we must pay attention to cleaning.
The most common plastic that is not recommended for recycling: the number 1
No. 1 is the material of our common bottles for drinks. This material is mainly PET. I don't know if you have poured hot water into the mineral water bottle, the bottle will be easily deformed or even damaged. In fact, it is also determined by the characteristics of the material. If mineral water bottles are found to have signs of heat deformation, it is even more unusable. Harmful substances may have appeared with high temperatures. At the same time, the life of this bottle is relatively short, according to studies, harmful substances appear after a few months in the natural state. If you use it for food. Security risks can be present.
Recyclable but not recommended for food: number 2
Common plastic pipes, cleaning products are mostly made of high-density polyethylene. The chemical properties of this material are relatively stable and are not prone to abnormalities. However, it is not recommended for holding food. If you want to be eco-friendly, you can purchase a refill and use it. For example, many bottles of laundry detergent can be used to supplement, which can also play a good environmental protection role.
The most common plastic that cannot be recycled: the number 3
Common boxes, plastic greenhouses and other materials are more malleable and relatively cheap. Hazardous substances appear at 81°C. Commonly used in snakeskin bags, wires, etc. Although PVC is often not used in food packaging, it will not be directly ingested even if harmful substances appear. However, there is a food grade PVC, of course, it is still not recommended to reuse.
Common plastic products that come into contact with food, do not heat: number 4
The plastic bags, plastic bags, etc. commonly used in the kitchen are mainly low-density polyethylene. However, this material is not resistant to grease and may be melted when it is contaminated with grease. The melting point is also relatively low, so the first is to recommend not to send plastic products of this material into the microwave oven or pot to heat, and the second is to try not to wrap food containing grease for a long time.
Common materials such as disposable water cups: number 6
The main material is polystyrene. This material can withstand the temperature of boiling water. However, it is not suitable for recycling. At present, this plastic is also used in the preparation and daily packaging of some cosmetics. Because of the widespread use of disposable lunch boxes, a large part of plastic waste in the ocean is polystyrene. Therefore, it is recommended that you bring your own lunch box when packing food every day.
Again, there are recycling signs that small triangles are just plastics that can be recycled, but that doesn't mean they can be recycled on their own. Household food is still looking for "5" and "7". Not letting the act of protecting the environment affects your health.
Plastic pollution has become one of the world's problems. The natural decomposition of plastics in nature can take hundreds or even thousands of years. According to studies, microcirculation of plastics has entered the human body. The smallest plastic micro-waste is only 5 microns, and these plastic particles can enter the food chain with the wind and with the rain. Humans at the top of the food chain, if left unchecked, sooner or later will "eat their own evil consequences"
The state is also gradually issuing regulations. Try to limit the use of some non-environmentally friendly and unnecessary plastic products. Like advocating that everyone bring their own environmentally friendly cloth bags, reduce disposable straws, and use degradable packaging bags. Protecting the earth's environment starts with you and me. First of all, let's start by recognizing plastic labels and using them rationally.