The Development of Composite Packaging Materials
The Development of Composite Packaging Materials
The advent of multi-layer composite flexible packaging materials marks a significant advancement in the of packaging development. It has not only transformed many old packaging concepts but also driven major developments in packaging machinery, packaging materials, packaging technology, and even the entire of packaging science. The development of composite packaging materials, which are functional, diverse in variety, affordable, and suitable for different product needs, has brought substantial economic to today's packaging industry. It is expected that the development of composite packaging materials will continue to hold a significant position in the entire packaging industry, with many new and processes being applied in composite packaging materials, further driving the progress of packaging science. However, the advent of multi-layer composite materials has also brought new challenges in of recycling packaging waste. It has been recognized that the development of packaging must be in harmony with the environment. While pursuing the perfect packaging function with multi-layer composite structures, considerations should be given to energy and material consumption as well as the recycling of packaging waste. These are clearly two contradictory factors. To facilitate recycling, the of single-material packaging should be maximized; while to meet the needs of multi-functional packaging, a combination of various materials should be used. Packaging professionals have done lot of work to balance these two factors, developing better performing multi-functional single-layer materials and recyclable composite materials. For instance, the recently developed PET/Six coated film/CPP and OPP/SiOx coated film/CPP multi-functional new composite flexible packaging materials are recyclable green packaging materials. These materials, with inorganic oxides, offer the same barrier properties as aluminum vapor-deposited films and are transparent. They have excellent resistance to rupture, folding, chemicals and heat, and are easy to heat in a microwave oven. They are expected to become a substitute for aluminum-plastic composite materials. With the continuous development of packaging materials, composite materials will also continue to evolve and play a unique role in packaging materials that other materials cannot replace
