From packaging function and talk about green packaging (below)

(a) The basic conditions for green packaging

With the continuous improvement of people’s environmental awareness, green packaging has become more and more popular with people. It can be described as people’s desires and expectations. But so far, quite a lot of people’s understanding of the true meaning of green packaging is still very one-sided or quite vague. of. Therefore, here we discuss the issue of green packaging with everyone. I believe that the so-called green packaging, in short, is conducive to the sustainable development of human packaging, namely the green packaging. Specifically, the so-called green packaging should have three basic conditions at the same time, namely, safety, hygiene, environmental protection, and resource conservation. If a package does not have or does not fully meet the above three basic conditions, it cannot be called a green package.

1, safety and health

Safe means that the packaging must have reliable protection function for the packaged goods. It is a basic function that any package must have, and it has universality; hygiene refers to the use of the package, must not be toxic to humans and livestock, and complies with relevant hygiene standards. Claim. Different commodities have different requirements for the hygienic properties of packaging materials. This requirement is particularly important for foods and drugs.

2, protect the environment

The relationship between packaging materials and environmental protection must be analyzed from the perspective of the life cycle. From the perspective of environmental protection, packaging materials are required to have good adaptability to environmental protection from the beginning of raw materials, to the production, processing and use of packaging materials, and even to the entire waste disposal process (the entire life cycle) after use. The emphasis here is on the whole process, not just on one or some links, that is, on the governance of “white pollution” and to prevent the pollution of packaging waste from the natural environment. It is very important and important for the development of green packaging. On the other hand, as far as the development of green packaging is concerned, it is not enough to simply deal with "white pollution" - the disposal of packaging waste.

3, save resources

Mainly referring to saving materials and energy. Of course, from a deep level, there are also questions about saving human resources.

(b) To carry out green packaging work, we must pay attention to the following aspects

1, can not be limited to the development of green packaging governance "white pollution.

Managing "white pollution" and making packaging obsolete does not cause harm to the natural environment. It is a necessary condition for developing green packaging. Governance "white pollution" is an important aspect of developing green packaging, but governance "white pollution" is only a green package. One aspect of the game, rather than the entire contents of the green packaging, can be described as "white horse is not a horse." The development of green packaging is a systematic project. We must seriously study the entire “life cycle” of packaging to eliminate the harm to the natural environment and human beings through the whole “life cycle” of packaging in order to realize our original intention of developing green packaging. The true green packaging achieves the goal of sustainable development and benefit for future generations.

2. We must attach great importance to cleaner production.

While carrying out the work of green packaging, while we are currently focusing on the disposal of packaging waste, we must incorporate clean production into the content of green packaging. Particular attention should be paid to the issue of the clean production of paper products and plastic products that have a large amount of use and have a great impact, and minimize the negative impact of the “three wastes” substances on the surrounding environment during the production of packaging materials. For example, do a good job of sewage treatment in pulp production, and for example, as far as possible the use of the production process, no waste material production, energy consumption less solvent-free composite process, co-extrusion compounding process, extrusion compounding process instead of dry compound process , Production of plastic composite flexible packaging materials; For the current conditions, we still have to use some toxic and hazardous substances, production of packaging materials, in the production of waste management to do a good job, to achieve the standard emissions and so on.

3. Pay attention to and focus on the problems in the recycling of packaging waste.

Recycling of packaging waste has made great achievements, but there are many problems. We must attach great importance to the problems that exist. Here are some representative examples.

For example, the problem of recontamination of the environment caused by the waste water from the washing of packaging waste. The current situation of direct discharge of waste water from washing waste without treatment is common. On the one hand, packaging wastes are recycled and reused, which reduces the environmental pollution caused by packaging wastes. However, at the same time as recycling and recycling of packaging wastes, a large amount of waste water is generated, which pollutes the environment more than the environmental pollution caused by packaging wastes. It may even be worse than this. In such a sacrificial environment, the method of recycling waste materials is not desirable.

Another example is the rational use of recyclables from packaging waste, which is also a question worthy of exploration and attention. At present, a large number of recycled materials of “unknown source” packaging wastes are used to make packaging materials that are in direct contact with foods. For example, in Shanghai, a large number of recycled polyethylene shopping bags are produced. In the farmers’ market, they are used to package fruits and vegetables and meat. For foods such as aquatic products and aquatic products, whether or not they were packaged with pesticides, chemical fertilizers, and other substances that are toxic to the human body are unknown in their previous applications. As for the enormous potential dangers to human health, it is conceivable that there is a huge potential risk to human health. I once questioned the use of black vest bags in food packaging in the internal publication of “Green Packaging and Environmental Protection”. Caused the attention of relevant parties.

4, increase investment in science and technology, and continuously improve the environmental adaptability of packaging materials.

For those varieties with excellent performance and poor environmental adaptability, such as excellent gas barrier properties and excellent moisture resistance PVDC, the effect is very remarkable in the packaging of food and medicine, but its adaptability to environmental protection is better. Poor: poor thermal stability, difficulty in recycling; toxic and harmful substances such as hydrogen chloride and dioxins are produced when incinerated; scattered in nature or buried in the ground and difficult to degrade, which is an advantage and disadvantage Very prominent varieties, for such packaging materials, before there is no better material to replace, it is recommended to control the use of them (you can use it when you can not use, try not to use, in the case of non-essential use as much as possible ) And organize efforts to strengthen the research on the collection, utilization and harmless disposal of its packaging waste.

Source: Shanghai Packaging