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interior wallsurface structure,improve the barrier properties of the gas bottle,light andwater to meet irrigation beer loading and saving performance requirements.(2)economic and technological cycle of Anhui Academy of Engineering Technologyrecently introduced the use of coated PET beer bottles,the technology enables PETbeer bottle sealing and security is greatly improved.Coating is the use of aspecial protective coating,monolayer PET bottles can improve safety sevenfoldincrease 3O times the oxygen barrier property,while ensuring that PET bottled beerand glass bottles of beer there is no difference in taste.[16](3)LiaoyangPetrochemical Company Institute method was added by the use of nano-compositepolymer modified polyester synthesis process Nanoparticles,uniformly dispersedamong the polyester polymer chains,effectively blocking gas permeation,preparedoutstanding barrier properties of high barrier polyester,polyester barrier istwice as common.