Plastic is environmental protection product? What is a green packaging

by:Lisson     2020-05-18
Usually people will always plastic packaging and associated with 'white pollution', make easily degradable materials into the packing of the products as a green packaging, without considering the packaging production process will cause environmental pollution and resource waste, as well as packaging products can be reused after use. For example, some people will paper shall be regarded as green packaging, plastic packaging in the opposite of green packaging. So, what is a green packaging? Other packaging materials can not replace green rubber industry held not long ago on the BBS, experts attending the meeting to clarify, is conducive to the sustainable development of the packaging is green packaging. To health, environment friendly, save resources of the three scale to measure, in the life cycle analysis is environmental protection, is the green packaging. If paper in papermaking process, therefore, serious pollution or recycling processes improper, do not accord with the requirement of green packaging; The plastic packaging if the reduction, recycling, recycling, is green packaging. Studies have found that the plastic material can get a lot of application because of its lighter quality, compared with the glass and metal, with low carbon footprint. From the point of comprehensive performance, plastic also possesses the advantages of other packaging materials can not replace. High density polyethylene than bleached kraft paper shopping bags full life cycle of the pollution is much smaller. If the ban plastic in the packaging area, will cause a bigger package pollution. Full life cycle in addition to the materials used in the packaging design, but also consider whether green from users and use environment. If there is less direct packaging materials, at the time of transport to use packaging may be more. On the premise of meet the packaging function, and follow the circular economic principle of reduction, reuse, recycling economic activity behavior, try to reduce the discharge of waste in the process of the entire life cycle, is the starting point of green design. This can be achieved through product design packaging lightweight effect, reduce the usage of raw materials; On the other hand can be used for recycling of plastic raw materials, reduce the discharge of solid waste. In the packaging design and development, global vision for the development of a successful commodity yes. Nearly listed Coca-Cola bottles 'ice dew' is the representative of green design first. 'Ice dew' light bottle packaging bottle weighs only 9. Eight grams, more than 35% compared with the original bottle, the corresponding 35% reduction in carbon emissions, and ordinary plastic is about 16 grams of the quality of canned beverage bottle. And its bottles of wall thickness is only 0. 1 mm, can be easily twisted into strips, saving more than 70% of the space. This product can achieve nearly 40% than ordinary plastic but not bearing physical properties such as lower, and its technical design is inseparable. New cap used the design of narrow mouth, smaller diameter and height to cap the amount of polyethylene material decreased by 50%, but the sealing and no variation; Bottle wall adopted different reinforcement structure, although the thickness is only 0. 1 mm, but not enough to guarantee the bottle containing beverages deformation; The appearance of the bottle bottom petal type grain than ordinary bottles for more than 1 times, so as to realize the thin end of compression. Recycling difficult is also the important factors affecting plastic packaging 'image'. As a result, are more likely to recycle packaging materials and plastic packaging design focus. According to production enterprises, using the same material as far as possible when packing design or easy to separation of material, easy to circulation of materials, can improve the circulation utilization of plastic packaging materials. Bimodal high density polyethylene, metallocene polyolefin, have cut off the water resistant performance of modified pva coating film such as packaging materials, in the loss of both performance and can decrease the thickness of the film. This lightweight, single raw materials packaging materials is a good choice. If can add hot sealing stretch film cover light oil can significantly reduce the amount of material, has got a lot of application in cold drinks packaging; High strength metallocene polyolefin can less packaging film thickness; Co-extrusion composite technology can control the film thickness in each layer, so the price is too high barrier layer thickness can be controlled very thin, at the same time its preservation could double or even several times to improve performance. Short life packaging optimization full degradable plastics in tsinghua university professor bao-hua guo's view, bioplastics are no substitute for common plastic, but for disposable goods or product life cycle is short and not easy to recycle, such as plastic or family with packaging, fully biodegradable material is a kind of optimization. The industrialization of the degradation of poly (lactic acid) (PLA) plastic material has won a wide application in the field of packing and so on. Large retailers headed by retail giant wal-mart as early as a few years ago began to promote the use of transparent rigid boxes and bags, poly (lactic acid) (PLA) and a growing number of retailers have joined the ranks. It is understood that weighs 14 grams of ordinary polyethylene packaging materials with modified polylactic acid materials to replace, only 1 quality. 5 grams. Implementation capacity of poly (lactic acid) (PLA) after industrialized production, the price will be close to traditional polyethylene film. Green plastic packaging will more near to us.
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