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[Chemical Knowledge]：Recognize plastic grades and different uses to contribute to environmental protection

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In recent years, with the gradual improvement of environmental awareness, more and more people begin to pay attention to the green environmental protection of plastics. However, although many people know that plastics are not very environmentally friendly, they lack understanding of various plastic grades and usage scenarios, and often do not know how to choose more environmentally friendly plastics or reduce the possibility of ingesting plastics. This article will introduce relevant knowledge from two aspects: plastic grades and different uses.

1. plastic grade

based on different materials, plastics can be divided into various types of grades, different grades of plastics have different performance and environmental protection indicators, generally speaking, food grade plastics are the safest and most environmentally friendly. The following content will briefly introduce the plastic grade:

1. Food grade plastic material

Food grade plastic material is the safest kind of plastic grade. After many tests in the production process, the material is non-toxic and tasteless, high temperature resistant and does not release harmful substances. Widely used in baby bottles, fresh-keeping boxes, tableware, etc.

2. Medical grade plastic material

Medical grade plastic material is a plastic grade with very high purity. The production process of the material needs to avoid impurities or pollution as much as possible to ensure that the product is non-toxic and harmless. It is usually used in various medical fields, such as instruments and equipment, surgical consumables, etc.

3, engineering grade plastic material

engineering grade plastic material is a high-performance plastic grade, usually used in automotive, aerospace, electrical and other engineering fields. Compared with ordinary plastic materials, engineering-grade plastics have the advantages of high temperature resistance, wear resistance, impact resistance and so on.

4.

of ordinary plastic materials Ordinary plastic materials refer to materials other than the above three plastic grades, which are widely used in various fields of life and work, such as packaging, clothing, shoes and hats, household items, etc. The environmental protection of ordinary plastic materials is not as good as the first three, but the production cost is low and the use is convenient.

2. plastic use

different grades of plastic materials are usually used in different fields, for different purposes, there are different environmental recommendations.

1.

in the food and catering field For the food and catering field, it is the most ideal choice to use food-grade plastic materials as much as possible. In the purchase of fresh-keeping boxes, tableware, etc., should recognize the plastic grade logo, the purchase of food-grade quality assurance products.

2.
in the field of daily household
In the field of daily household, attention should be paid to controlling the use of ordinary plastic materials, and the use of single-use plastic products such as snack boxes, water cups, and shampoo bottles should be minimized. Reuse glass, ceramics and other materials.

3.

in the field of sports and leisure For the field of sports and leisure, light and high-strength engineering-grade plastic materials should be selected to meet the requirements of sports equipment for strength and comfort, while minimizing attempts to use plastic bags.

To sum up, the differences in plastic grades and usage scenarios determine their differences in environmental protection and health. As ordinary consumers, we can work together to protect the environment by choosing the right plastic materials and reducing the amount of plastic used.