Energy saving trend of plastic packaging materials
21st century is the century of environmental protection, environmental issues are becoming increasingly important energy resources become more strained, build a circular economy and society, and take the road of sustainable development has become the focus of global concern and urgent tasks, and become a business development and human activity guidelines. To meet the requirements of the new era, plastic packaging materials other packaging requirements to meet market quality and quantity increasing demand, its development must be to save resources, energy saving, easy to be recycled after use, easy to dispose of or eliminate trade environment sodium or degradation as a starting point of technological development. Chinese plastics industry has stepped into the era of energy conservation and environmental protection, plastic packaging materials, new processes, new technologies, new products are emerging, and being high-performance, multi-functional, active use of new materials, new technology, broaden the application areas as well as plastic packaging and environmental protection and balanced development direction.
The development of recycling economy is the construction of a resource-saving and environment-friendly society and an important way to achieve sustainable development. Adhere to the development of both conservation, conservation priority, in accordance with the reduction, reuse, recycle principle, vigorously promote saving energy, water and land and materials, comprehensive utilization of resources, improve the renewable resource recycling system, the full implementation of cleaner production, the formation of low input, low consumption, low emissions and economical growth mode of high efficiency. Actively develop and promote resource conservation, technological substitution and recycling technologies, accelerate the pace of energy saving, high energy consumption, heavy pollution and backward technology, processes and products mandatory phase-out system is conducive to saving resources prices and taxation policy.
High resistance and permeability of plastic packaging materials, be given to durability, preservation: and flavor and extend the shelf life was the rapid development and wide application, in addition to the widely used polyvinylidene chloride (PVDC), ethylene vinyl alcohol copolymer ( -EVOH), in recent years, the development of environmentally appropriate materials, prompting polyvinyl alcohol (PVA), polyethylene terephthalate (PEN), a total of polyamide (MXD6), silicon oxide or aluminum evaporation film (soft the development of glass), nano-inorganic materials will be more noticeable.
Functional packaging materials, such as functional preservation of film, sheet, microporous breathable film preservation, permeable packaging film, shrink packaging films and multi-functional with special features, convenience (easy-open, easy to re-seal) packaging materials and products will gain greater development. Aseptic packaging materials and technical biggest advantage is under sterile conditions, no preservatives, no refrigeration, can maximize the retention of food the original nutrients and flavor, can significantly extend shelf life, easy storage and transport, market development very rapidly, expanding use, in addition to already account for a large share of dairy products, fruit juice, but will further expand into pharmaceuticals, cosmetics and spices fields.
Nano composite packaging material will vary with the rapid development of nanotechnology and rapid industrialization, due to its wear resistance, hardness, strength, penetration resistance, plasticity were significantly enhanced and improved, except for food packaging, but also for special packaging such as anti-static, anti-electromagnetic, explosion-proof and invisible, dangerous goods packaging, it is expected to promote the traditional plastic packaging materials, a huge change.
Environmentally friendly (green adaptive) plastic packaging materials (or green plastic packaging materials), with the implementation of environmental management standards IS14000 series to become the world focus of attention, which is easy to recycle plastic packaging materials such as PET, PEN, easy to environmental degradation plastic (EDP) in biodegradable plastics, has become the hot hot, other issues such as zero pollution foam, thin-walled bottles and bag-shaped packaging containers are also cause for concern.
Hot-fill plastic bottles of juice and tea beverages, with the traditional sterile paper packaging, three metal cans, glass bottles relatively low cost, transparent material, light weight, unbreakable, good environmental adaptability advantages, it has been more widely used, it accounts for more than half of canned heat throughout the city. Hot-fill plastic bottles addition to PET, BOPP bottles are subject to greater attention in recent years. BOPP bottle has the following advantages: improved heat resistance by PP drawing process, canned temperature can be increased to lOOcC, the bottle does not require special handling equipment, and greatly improved oxygen barrier properties; BOPP bottle does not absorb moisture, storage long periods of time, easy to recycle; cheaper than the cost of the product more than 20% of PET bottles.