The 21st century is a century of environmental protection. Environmental issues are becoming increasingly important. Resources and energy are becoming more and more tense. Building a recycling economy and society, and taking the road of sustainable development have become the global focus and urgent task, and have become guidelines for the development of various industries and human activities. In order to meet the requirements of the new era, plastic packaging materials, in addition to meeting the increasing demands of the market for packaging quality and quantity, must save resources, save energy, be easy to recycle after use, easy to dispose of, or be easily consumed by the environment. Nanotechnology or degradation is the starting point for technological development. Plastic packaging new materials, new processes, new technologies, and new products continue to emerge, and they are developing high-performance, multi-functional, actively adopting new materials, new technologies, broadening the application fields, and harmonizing the development of plastic packaging and environmental protection. High permeability plastic packaging material, which has been rapidly developed and widely used due to its ability to provide shelf life, freshness, flavor protection, and shelf life, in addition to currently widely used polyvinylidene chloride (PVDC), ethylene, vinyl alcohol copolymers. In addition to (EVOH), in recent years, environmental friendly materials have been developed to promote the vaporization of polyvinyl alcohol (PVA), polyethylene terephthalate (PEN), copolyamide (MXD6), silicon or aluminum oxide films (soft The development of glass, nano-inorganic materials, etc. will be more noticeable. • The use of metallocene polyenes (MHDPE, MLLDPE, MPP) can further improve many properties of flexible packaging such as strength, toughness, transparency, barrier properties, heat resistance, and processability. Will be greatly concerned and welcomed by companies. Functional packaging materials, such as functional cling film, sheet, microporous breathable cling film, selectable transparent packaging film, multifunctional heat shrinkable packaging film, and special functions and convenience (easy to open, easy to reseal) Packaging materials and products will gain greater development. The biggest advantage of aseptic packaging materials and technology is that, under aseptic conditions, no preservatives, no refrigeration, and the ability to retain the original nutrients and flavors of foods as much as possible, can greatly extend shelf life and facilitate storage and transportation. The development is very rapid, and its use is continuously expanding. In addition to the larger share in dairy products and fruit sweat drinks, it will be further expanded into the fields of pharmaceuticals, cosmetics and condiments. Nano-composite packaging materials will be rapidly industrialized with the rapid development of nanotechnology, and their wear resistance, hardness, strength, barrier properties, and plasticity are all significantly enhanced and improved. They can also be used in special applications besides food packaging. Packaging such as anti-static, anti-electromagnetic, anti-explosion and invisible, dangerous goods packaging, etc., it is expected that it will promote the traditional plastic packaging materials have brought about tremendous changes. · Environment-friendly (environmentally friendly) plastic packaging materials (or green plastic packaging materials) have become a global hotspot with the implementation of the IS 14000 series of environmental management standards, among which plastic packaging materials such as PET and PEN that are easy to recycle and reuse Biodegradable plastics in environmental degradable plastics (EDPs) have become hot spots. Others, such as zero-pollution foams, thin-walled bottles, and bag-like packaging containers have also attracted attention. · Hot-filled plastic bottles have lower costs, transparent materials, lighter weight, and less damage when packaged in juice and tea beverages, compared with traditional sterile paper packaging, three metal cans, and glass bottles. Because of its advantages, it has been used more and more widely, and its use accounts for more than half of the total hot canned market. In addition to PET in hot-filled plastic bottles, BOPP bottles have received more attention in recent years. The BOPP bottle has the following advantages: The heat resistance is improved through the PP stretching process, the canning temperature can be increased to 100 degrees Celsius, the bottle mouth does not require special equipment, and the oxygen barrier performance is greatly improved; the BOPP bottle does not absorb moisture, The storage period is longer and easy to recycle; the product cost is more than 20% cheaper than PET bottles.
Reprinted from: Qilu Graphic Arts Network
Environmental plastic packaging material