Patent AU-2019226120-B2 (AU)
Title: Polyester film and method for reproducing polyester container using same
Inventor: SHIN DAE YONG
IPC: C08L67/02
Filed: 2019-04-30
Granted: 2020-07-09
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(54) Title: POLYESTER FILM AND METHOD FOR RECYCLING POLYESTER CONTAINER USING SAME 
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(1) ... Step of preparing polyester container with polyester film 
(2) ... Step of smashing polyester container with polyester film to obtain flakes 
(3) ... Step of heat-treating flakes to prepare recycled polyester chips 
(57) Abstract: An embodiment relates to apolyesterfin and a method forrecycling a polyesiercontaincrusing samc, the polyester fihn 
comprising a copolymer polyester resin containing a diol component and a dicarboxylic acid component. The polyester film satisfies a 
'lheat shrinkage of 30% or more in the main shrinkage direction upon the heat treatment at a temperature of 80'C for 10 seconds and a 
eqmelting point of 190°C or higher as measured by differential scanning calorinmetry. and therefore can improve the recyclability of the 
polyester container to solve environmental problems and can increase yield and productivity.  
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