Interview on the hottest green packaging surface

2022-09-20
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Green packaging face-to-face interview (Part 2)

reuse is the highest level of environmental protection measures

the internationally popular "reuse, weight reduction and thinning, recycling" is recognized as the three principles of environmental protection, but these three contents actually have different efforts to environmental protection, but they also accelerate the ongoing integration process of domestic rare earth enterprises

reuse is the highest level of environmental protection, because it can maximize the life of products and materials. For example, glass bottles containing beer and condiments can be reused for 5 times or more, while cans can only be used once and need to be recycled. Another example is beverage packaging. PET bottles are the most commonly used containers, and most of them need to be recycled after being used once. To this end, Europe has begun to produce thickened PET bottles, which can be recycled many times, while China is still working hard to reduce weight. Similarly, there are dairy products packaging, fresh milk or yogurt in glass bottles, which can be reused after drinking, while those in cartons and plastic cups can only be used once

plastic turnover box is a commonly used transportation and packaging method for beverages and beer, which can be used for many times. However, in recent years, many beer enterprises have switched to disposable cartons, which is not actually a way to protect the environment

most composite materials are not environmentally friendly

single layer materials often cannot meet the performance requirements. Therefore, paper and plastic are often used in the form of composite materials in packaging, such as composite paper containers and some plastic packaging bags for liquid food and beverage packaging

in fact, composite materials are usually unable to reproduce similar products. For example, the composite paper container is composed of paper, plastic, aluminum foil and adhesive. After one use, paper, plastic and aluminum foil cannot be separated and can only be recycled into plates for other purposes. In fact, it shortens the "life cycle" of paper, plastic and aluminum foil. Another example is the plastic bags made of PP, PE or PVC, which can be processed into plastic bags or used in the production of other plastic daily necessities after use. However, if these materials are compounded with nylon or other high barrier materials, they can only be incinerated after use, and have no reuse value

reducing weight and thickness can reduce the use of packaging materials. However, it should be noted that if a thicker single material can achieve the performance of a thinner composite material, then using a single material to make packaging is a more environmentally friendly approach. At this point, glass and metal packaging are undoubtedly more environmentally friendly

if it does not coincide

the impact of different packaging forms

it is also plastic packaging, and the environmental protection contribution of making bottles and bags is even different. This is because the varieties of plastics with heat sealing properties are very limited, so most plastic bags have to adopt the form of composite materials. However, bottles are different. Whether they are injection molded or extruded, they can be made of a single material. The products made of single material are easy to regenerate or recycle after use

in addition, the manufacturing of packaging products also directly affects the recycling and sorting process. For example, ultra-thin plastic bags, due to their light weight, fly with the wind after use, causing difficulties in recycling and landscape pollution

impact of waste disposal

recycling is the basis of all waste disposal, and sorting is the key link of disposal

recycling is driven by policies and interests, which Europe has successful experience to learn from. While sorting needs technical support, especially when producing packaging products, it needs to be guided from the source of material selection

impact of sorting

the difficulty of sorting packaging waste of different materials is very different. The sorting cost is the main cost component of packaging waste treatment

metal containers, especially tin cans, are the most easily sorted waste; Glass takes the second place; The sorting of plastics and paper is much more complicated, and only individual varieties can be sorted out, such as PET bottles. Packaging paper that cannot be sorted can only be used to make very low-grade products, which is a waste of resources. And many plastics that cannot be sorted are even difficult to enter the cycle again, so they can only be burned or landfilled

incineration and landfill

the life of materials is limited. Even if the use time can be extended as far as possible, the materials will eventually lose the possibility of recycling, with an increase of 8.50% month on month. Incineration and landfill are the ultimate destination

some plastic products will produce harmful gases when burned, such as PVC. Therefore, the packaging should be restricted or banned. This is undoubtedly the right way to carry out special supervision on 5689 high energy consuming industrial enterprises across the country, because most PVC packaging is used as composite materials and cannot be recycled. This is quite different from the application of PVC in the building materials industry

restrict the use of packaging materials that will produce harmful gases during incineration, so that packaging waste can be incinerated as much as possible to generate energy and avoid soil degradation caused by landfill

protect the environment and commercial interests

to develop green packaging, we must formulate reasonable policies, not only considering technical factors, but also considering the actual allocation of resources; Not only the cost but also the social benefit should be considered. "Green packaging" should be environmentally friendly packaging in the whole process from material and product processing to waste disposal. It can't be taken out of context. It is considered that the packaging that is easy to dispose of waste is "green packaging", which is conducive to environmental protection

considering the whole process of manufacturing, use and recycling, glass and metal packaging are undoubtedly the most environmentally friendly materials and packaging products, but the reality is that the use share of glass and metal packaging containers is shrinking. Because in modern society, whether a commodity can be recognized by the market will be restricted by many factors

the decrease in the market share of glass packaging is due to the fact that glass is bulky and fragile, and cannot fully meet the requirements of convenience and quickness in modern society; The decrease in the share of metal packaging is due to the high cost of metal packaging and the inability to meet the transparent packaging needs of young people; Although paper packaging waste is easy to treat, China is extremely short of forest resources. Facing such contradictions, consumers should realize that environmental protection is not a slogan, but an action. To protect the environment, we may lose some conveniences and even pay a high price. Because in general, environmental protection is definitely not a thing that can reduce costs. Choosing "green packaging" often means paying more money

moreover, don't think that "green packaging" is all new products. Choosing "green packaging" is sometimes a return of choice, just like returning to nature

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