After entering 2022, many friends found that the straw when buying milk tea had become a paper straw. When we stay in the hotel, we need to ask the staff for disposable supplies separately. When we go shopping in the supermarket, the plastic bags become biodegradable... All kinds of plastic products gradually fade out of our life. This is due to the introduction of the "strictest plastic restriction order in history".
In January 2020, the state issued the opinions on Further Strengthening the control of plastic pollution, which put forward the requirements of banning the use of plastic products in the fields of catering packaging, takeaway services, supermarkets, pharmacies and so on. All provinces have issued implementation plans one after another. January 1, 2021 will be the first important stage node of China's plastic pollution control. Plastic bags and straws will be banned in takeout, supermarkets and other areas in more than 50 cities.
According to relevant data, the global plastic packaging market in 2017 was US $19.98 billion, and it is expected to reach US $269.65 billion by 2025; In 2017, the scale of China's plastic packaging market was US $49.64 billion, and it is expected that by 2025, the market scale will be close to US $70 billion. With the further implementation of the "plastic restriction order", degradable plastics, paper packaging and other products have become key materials to replace existing plastics. There is a shortage of related products and raw materials, and many listed companies have joined the ranks.
Degradable packaging material refers to reducing the chemical stability of packaging materials by adding additives such as starch, cellulose and degradation agent. The packaging material is degraded in the natural environment. Degradable packaging materials can be divided into photodegradable materials, biodegradable materials, thermal degradable materials and mechanical degradable materials according to different degradation principles. The photodegradable material is photoinitiated after absorbing ultraviolet light, so that the bond energy is weakened, and the long chain is divided into short chains, which are oxidized in the air to generate free radical chain breaking reaction, and further degraded into biodegradable low molecular weight compounds. Biodegradable materials refer to materials that can be degraded under certain time and conditions. A material that can be degraded by microorganisms or their secretions under physical and chemical action. It can be completely decomposed into carbon dioxide and water under the action of microorganisms. Thermal degradation material is a kind of low molecular weight material, which will decompose under certain thermal conditions. Mechanical degradable materials are biodegradable polymers affected by mechanical stress. Such as non degradable polymers or biodegradable polymers used as fixation or suture materials.
