Development and application of easily recyclable single material

Packaging is an important application field of plastics in China, and it is also the most used field of disposable plastics, which causes great environmental pollution. Traditional packaging bags mainly for a variety of composite production of materials, difficult to one-time recycling, and multiple composite process will produce more volatile organic compounds (VOCs). Sinopec and Shanghai Ruoyi jointly promote material research and development based on customer needs, provide customers with more environmentally friendly single material packaging solutions, and make contributions to achieve carbon peak and carbon neutrality in China. Single material packaging, refers to the flexible packaging composite structure, in addition to ink, adhesives, do not affect the recovery of the coating or coating thermoplastic processing, the weight of the same material accounted for more than 90% of the weight of the material, has the characteristics of easy recovery. Zhenhai Refining and Chemical research and development of flow stretch polyethylene packaging film (CPE) special material series brand, can be used for heat sealing layer special material, core layer special material, etc., fill the domestic blank; Developed flow polypropylene packaging film material (CPP) special material series brand, can replace imported high-end brand used as corona layer special material. The thermoplastic polyvinyl alcohol (TPVA) developed by Great Wall Energy chemical co., Ltd. has been popularized and applied in the multi-layer co-extrusion film and color printing composite packaging material manufacturers, and can be used in the packaging production of food, daily chemical products and other products. Bidirectional stretched polyethylene (BOPE) developed by BEIhai Chemical Institute can be used to produce high strength and puncture resistant film, which can be widely used in food packaging and daily chemical products packaging field to achieve single material packaging. From the point of view of the downstream end customers, the use of green packaging, the cost is likely to decrease rather than increase. To a famous snack brand products to calculate, using BOPE film and PE high barrier film to replace the original BOPA film and PE blowing film, per square meter of packaging film cost reduced 0.01 yuan. In the fast-moving consumer goods industry with huge consumption, 0.01 yuan cost is very important. According to the National Bureau of Statistics,In 2018, the total output of composite packaging materials in China exceeded 4.3 million tons, of which more than 95% were non-recyclable packaging structures. If all single material can be recycled packaging, will create 30 billion yuan of circular economic benefits.