BOPET film modification and its application in packaging design
The research progress of biaxially oriented stretching technology and biaxially oriented polyethylene terephthalate(BOPET)film modification is reviewed as well as its application in packaging design.The molecular chain arrangement and orientation of BOPET can be changed to improve the mechanical properties of the polymer films by adjusting the stretching ratio.The strength,stability,and transparency of the film can be significantly improved by controlling the biaxially oriented stretching conditions accurately.Biaxially oriented stretching can improve the heat resistance and barrier properties of blended films.It is necessary to further improve the quality of BOPET and jointly promote the progress of high-end BOPET film production technology to meet the development needs of the domestic BOPET industry.
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