Millions of tons of "dry waste" every year can be turned into green fabrics. This first-ever T-shirt is actually a recycled lunch box! After eating takeaway

Release time:Apr 24, 2024 05:00 AM

After eating takeout, where do the used lunch boxes go? Will these white dry garbage cause plastic or microplastic pollution? You may not expect that at the Advanced Low-Dimensional Materials Center of Donghua University in Songjiang University Town, Shanghai, the dark and light T-shirts for the first time in the new product look and feel like ordinary T-shirts, but they are actually recycled lunch boxes. With quick-drying properties.

From takeout lunch boxes to quick-drying T-shirts, behind this magical material cycle are takeout platforms, plastic recycling companies, fabric processing companies, designers and brands, as well as material scientists, who have worked together to open up this technical route and allow the first The advent of low-carbon polypropylene fabric made from recycled lunch box materials provides a high-value recycling scenario for take-out lunch boxes, which also reduces carbon footprint and environmental pollution accordingly.


Millions of tons of "dry waste" every year can be turned into green fabrics. This first-ever T-shirt is actually a recycled lunch box! After eating takeaway

A reporter from Jiefang Daily and Shangguan News learned that industry statistics show that more than 1 million tons of takeaway lunch boxes are used nationwide every year. After recycling this "bulk raw material", we try our best to make it harmless and mainly use it in some in lower-end applications. With the support of Meituan Qingshan Technology Fund, scientists from the State Key Laboratory of Fiber Material Modification of Donghua University creatively processed and modified waste lunch boxes to prepare ultra-fine denier polypropylene fiber and made it into Quick-drying fabrics and T-shirts.

"When we were thinking about the way out for takeout lunch boxes, we were wondering whether these lunch boxes made of polypropylene could also be made into recycled polypropylene fabrics after being recycled as waste products," said project leader, Polymer Carbon, Center for Advanced Low-Dimensional Materials. Li Bin, a researcher at the Zhonghe Platform, said, “With this idea, we quickly verified it, and the results showed that it was technically feasible, but there were still some challenges.” Therefore, a Ph.D. from the School of Materials Science and Engineering who was responsible for the specific implementation of the project We have invited industry chain partners including GEM, Monte Hi-tech, Li Ning and Kingfisher from the UK to develop together.


Millions of tons of "dry waste" every year can be turned into green fabrics. This first-ever T-shirt is actually a recycled lunch box! After eating takeaway

After unremitting efforts of many parties, the technical problems in various aspects such as impurity removal, deodorization, spinning and fabric production of recycled lunch box materials were finally solved, and the "recycled lunch box - slicing - granulation - drawing - weaving - manufacturing process was successfully opened. The technical route of "clothing" realizes the recycling from lunch boxes to T-shirts, which can be described as "reborn" and "turning waste into treasure".

“While giving new life to recycled lunch box materials, this project also provides a new sustainable development solution for the textile fabric industry,” analyzed Fang Weimin, Vice President of Management System of TUV Rheinland Greater China, “We provide recycled lunch box materials with Corresponding third-party carbon accounting was conducted, and the results showed that compared with virgin materials, the carbon reduction can reach 73%, and the carbon reduction effect is very obvious. "Therefore, polypropylene fabrics made from recycled lunch box materials are inherently low-carbon. It is expected to become a sustainable textile fabric on par with recycled polyester, the incarnation of used beverage bottles, and is favored by designers and brands.


Millions of tons of "dry waste" every year can be turned into green fabrics. This first-ever T-shirt is actually a recycled lunch box! After eating takeaway

It is also worth mentioning that improving the application value of lunch boxes after recycling will also greatly increase the recycling ratio of used lunch boxes. "We are committed to promoting the green and low-carbon development of the takeout industry. Waste lunch boxes can be converted into recycled polypropylene fabrics, which provides a new way to reduce lunch box pollution and create new experiences for consumers," said Tian Jin, Project Director of Meituan Qingshan Plan He expressed that he would continue to strongly support such innovative projects and contribute to the development of circular economy.

"Low-carbon environmental protection is the development theme of today's era, and it is also a new direction for the development of materials science. The school and industry experts have found a good cross-innovation point in the field of 'polymer material carbon neutrality', providing the industry with innovative ideas, Innovative solutions and innovative products." Zhao Zhen, vice president of Donghua University, hopes that the successful promotion of recycled polypropylene will drive the high value-added utilization of lunch boxes, promote the sustainable development of the green economy, and contribute more to the national "double carbon" strategy.

Just last month, it was renamed and appeared on the stage of the National Center for the Performing Arts. This Shanghai original master play went to Tsinghua University and Beijing Dalian for three performances.
Just last month, it was renamed and appeared on the stage of the National Center for the Performing Arts. This Shanghai original master play went to Tsinghua University and Beijing Dalian for three performances.

On the occasion of the 10th National Constitution Day, on the evening of December 4th and today, Shanghai teachers and students brought the youth version of the original drama "The Stand" to Tsinghua University for two consecutive performances, which resonated with audiences of all sizes. Tomorrow, there will be a performance at Peking University. A reporter from Liberation Daily and Shangguan News learned that a month ago, the professional version of the original large-scale drama "Lei Jingtian" was renamed "Stand" and was performed at the National Center for the Performing Arts for three consecutive performances. It received good reviews and also set the stage for this youth version of the drama tour. Kick off. Students from Tsinghua University and affiliated schools watched the performance. "On National Constitution Day, it is very meaningful for us to perform again. We will always remember the oath." said Du Yongqiang, a student from Huazheng Communication College who plays Lei Jingtian. It is reported that this law-themed drama performed at Tsinghua University and Peking University was produced by East China University of Political Science and Law and was composed entirely by Huazheng students.

Looks like a bug outside? Famous teachers such as Chen Mo put more blame on parents. The family is like a dragon, and the "epidemic baby"
Looks like a bug outside? Famous teachers such as Chen Mo put more blame on parents. The family is like a dragon, and the "epidemic baby"

Have you also noticed that many children have two different looks at home and outside: at home, they are like a dragon, lively; outside, they are like a worm, timid? Some people say that this is a kind of social anxiety among the "epidemic babies" born in the past three years. Is that true? Recently, Chen Mo, an expert in child and adolescent psychological education, a special supervisor of the Psychological Counseling Center of East China Normal University, and the former secretary-general of the Basic Education Professional Committee of the Shanghai Psychological Association, attended the class at the Qibao Huangdu Neighborhood Center in Minhang. Parents share how to help their children grow up healthily, with sharp humor and to the point. Chen Mo started the class. "Children are very outgoing at home and are afraid of socializing outside?" Teacher Chen Mo reminded parents not to pay too much attention to and protect their children at home. We should make good use of "housework"

How to protect "Children's 100 Languages" from 99 being stolen? , peanut allergy and mud resistance
How to protect "Children's 100 Languages" from 99 being stolen? , peanut allergy and mud resistance

November 25, Shanghai, China. There are two Chinese-translated books that have aroused heated discussions among educators. One is "The Pampered Mind: How is "Steel" Unforged? ", and the other is "Children's One Hundred Languages ​​- Reggio Emilia Experience in the Transition Period". Kindergarten "Calligraphy". [Peanut Allergy Forms a "Paradox"] Regarding "The Pampered Mind", Professor Tong Shijun, President of NYU Shanghai, cited a data case of "Peanut Allergy" in the book: In the United States, starting in the 1990s, due to concerns about sudden peanut allergies In the early 2000s, kindergartens and other educational institutions kept away from peanuts and excluded peanuts and other peanut products; however, in the 21st century, the proportion of children allergic to peanuts in the United States increased from only 4 per 1,000 people to 1,000 people. Up to 14 people. contrary to expectations

The scale and number of participants at this Shanghai Education Expo have reached new heights, showcasing good schools at home.
The scale and number of participants at this Shanghai Education Expo have reached new heights, showcasing good schools at home.

The 20th Shanghai Education Expo 2023 has concluded recently. The latest data from the summary meeting of the 20th Shanghai Education Expo 2023 showed that during the offline exhibition from September 15 to September 17, the Education Expo attracted a total of 115,000 people to the site to participate in various displays and interactive activities. 2.26 million people "visited" this year's Shanghai Education Expo online through the Shanghai Education Expo mini program. The Shanghai Education Influence Electronic Map has been viewed more than 350,000 times, and the Shanghai Education Live Broadcast has been viewed more than 8.36 million times in total. The online exhibition, which lasted for more than a month, reached a record high in scale and attendance. The 20th Shanghai Education Expo in 2023, guided by the Shanghai Municipal Education and Health Work Party Committee and the Shanghai Municipal Education Commission, and hosted by the Shanghai Education Press and Periodicals Corporation, has the theme of "Creating a first-class urban education and building a dream of a powerful country in education".

The whole family participated in the night concert in the library, from the Shanghai Aerospace System. The second millionth audience of Qian Xuesen Library is her night concert | My Motherland | System
The whole family participated in the night concert in the library, from the Shanghai Aerospace System. The second millionth audience of Qian Xuesen Library is her night concert | My Motherland | System

Since the summer of this year, the number of visitors to the Qian Xuesen Library of Shanghai Jiao Tong University has been steadily increasing, with a daily average reception of over 2000 people in July, exceeding the historical level of the same period. On the evening of the 21st, Huang Jing, a young science and technology worker from the Shanghai Aerospace Control Technology Research Institute, and her family entered the library and luckily became the second millionth visitor to the Qian Xuesen Library. That night, Huang Jing and her family signed up for the "More Night, More Beautiful - Me and My Motherland" night concert event held at Qianguan. In order to allow her family to have a better understanding of the outstanding achievements of Qian Xuesen, the founder of China's aerospace industry, before the performance, she specially arrived at the museum half an hour in advance to carefully visit the basic exhibition of "People's Scientist Qian Xuesen" inside. To her surprise, Qian Xuesen Library prepared a certificate of honor for Huang Jing's second millionth audience, as well as the Qian Library