The development of the hottest plastic packaging

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Development of plastic packaging

if someone says that a waste plastic film can be converted into harmless carbon dioxide and water, most people will think that it is incredible to improve the performance of tape at present. In response to this idea, the company developed a product called SPI Tek. Through careful study of the oxidation process, a substance added to polyethylene film is developed. This substance is given an additional storage period before the degradation of polyethylene film, which has been industrialized and has a range of varieties, including homobenzene polyimide, polyamide imide (PAI), polyetherimide (PEI) and bismaleimide (BMI). The time required for oxidation is affected by surrounding factors. For example, the film will accelerate the oxidation process under ultraviolet and high temperature, and slow down the oxidation speed under cold and dark environments. This additive reduces the weight of carbon molecules by destroying them and losing their mechanical properties. Eventually, this molecule will become small enough to be absorbed by microorganisms. Once this plastic film is digested by microorganisms, the residue is carbon dioxide and water. As long as degradation begins, it will continue until the end of the oxidation process. Another major advantage of this additive is its commercial viability. However, relevant industry institutions believe that degradable plastic films are not as harmless to the environment as the manufacturers claim. They warn that the concept of degradation does not conform to the primary principle of environmental protection, namely, the preservation of limited resources. In fact, the way to degrade plastic film is to make a resource completely disappear from the earth

relevant industry institutions also doubt that the method of degrading plastic film will affect the land improvement of waste landfills. Due to the degradation process, the molecules of the plastic film become smaller, thus reducing the need for landfill sites. That is to say, if it was originally necessary to occupy five landfills to store and bury waste plastic films, it may only need one after degradation. This situation means that a large number of degraded plastic film particles will be highly concentrated on a piece of land, which will affect the future improvement of this land. Jim, executive director of the plastic film association of the packaging industry, believes that if the landfill becomes a place designed for compost piles, it will be an environmental disaster

in addition, relevant industry institutions are concerned that degradable plastic films will seriously threaten the existing recycling system, although it has not been confirmed. This concern is based on the destruction of the waste film expected to be converted into recycled products by the degradation mode. It is unlikely that all products can be integrated into the recycling system after adding this additive. This additive may have a certain impact on the recovery system. The extrusion temperature of additives is very sensitive, and factors such as extrusion process will effectively hinder the degradation process. The raw material composed of a mixture of polyethylene with different softening indexes will not be conducive to degradation

in addition, simfuni environment suggests that spi-tek should be used in some suitable fields, rather than industrial compressed films or stretched films, such as those with recyclability or incineration, which can be separated, clean and easy to recycle. It is at least designed for consumer goods packaging. These packages are not suitable for recycling because they are seriously polluted and expensive to recycle and clean. Laurie of simfuni environment said: from an environmental and economic point of view, there is no sufficient reason to improve the recycling of plastic films in municipal waste heaps. The spi-tek of simfuni environment is not equivalent to other types of recyclable plastic films in the past decade. They have at least one drawback: they are extremely expensive and either too hard or too brittle or too weak to meet the requirements of the product. Laurie believes that recyclable plastics must meet the purpose of packaging. If the recyclable valve spring is to ensure that the valve seats in time and fits closely, the product is vulnerable, unobtrusive, unsealed and durable, then it has no place to stand. Packaging must use the least resources and more competitive means than non recyclable materials to show its excellent function

in order to play its largest role as polimotor 11, plastic packaging should be controlled in the life cycle rather than just shortening the time. It should disappear after performing its duties without causing harm

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