Patent AU-2020372604-B2 (AU)
Title: Polyester-based film, and method for recycling polyester-based container using same
Inventor: KIM CHUL KYU
IPC: C08J5/18
Filed: 2020-10-22
Granted: 2022-12-01
Abstract: Y 7ll A7 
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(54) Title: POLYESTER-BASED FILM, AND METHOD FOR RECYCLING POLYESTER-BASED CONTAINER USING SAME 
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(57)Abstract: An embodiment of the present invention relates to: a polyester-based film; and a method for recycling a polyester-based 
container using same, by which the recyclability of the polyester-based container can be improved to solve environmental issues, and 
quality, yield, and productivity can be improved. The method includes cutting the polyester-based film into 1 cm (length) x 1 cm (width) 
pieces, immersing the pieces in an aqueous sodium hydroxide (NaOH) solution having a concentration of 1 wt%, and stirring for 15 
minutes at 85 °C at a speed of 240 m/min so that the average particle size of a printed layer component separated from a substrate 
layer is at least 15 in, and thusth he quality of recycled polyester-based chips manufactured from a polyester-based container provided 
with the polyester-based film can be improved.  
(57) 7q}A 1 c x *1 1 cm F1 J711 R- 71 A1 1 - A]% 7 A}f (O A] 4 o ! ON 0 };, 8°o A24 
o 1 ; IC Al~~-c x4TlIcm-5]¶a7] - ;4q-j1'%S IAKJ~tt (NaOH)+- ~]j11,5C]A240 
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