Title:
POLYESTER FILM, METHOD FOR MANUFACTURING SAME, AND METHOD FOR RECYCLING POLYETHYLENE TEREPHTHALATE CONTAINER USING SAME
Document Type and Number:
WIPO Patent Application WO/2021/086082
Kind Code:
A1
Abstract:
Embodiments according to the present invention pertain to a polyester film, a method for manufacturing same, and a method for recycling a polyethylene terephthalate (PET) container using same. The polyester film does not have a crystallization temperature (Tc) or has a crystallization temperature satisfying 70-130°C as measured by differential scanning calorimetry, thus exhibiting excellent shrinkage properties and excellent recyclability due to controlled crystallinity, such that clumping hardly occurs even when the polyester film is dried at high temperature for a long time in a recycling process.
Inventors:
KIM CHUL KYU (KR)
JUNG EUGENE (KR)
KIM YONG DEUK (KR)
YANG JOO HO (KR)
LEE HYUK SOO (KR)
JUNG EUGENE (KR)
KIM YONG DEUK (KR)
YANG JOO HO (KR)
LEE HYUK SOO (KR)
Application Number:
PCT/KR2020/014956
Publication Date:
May 06, 2021
Filing Date:
October 29, 2020
Export Citation:
Assignee:
SKC CO LTD (KR)
SKC INC (US)
SKC INC (US)
International Classes:
C08J5/18; B29B17/04; B29C48/08; C08G63/181; C08L67/02
Foreign References:
| KR100981129B1 | 2010-09-10 | |||
| JP2001058622A | 2001-03-06 | |||
| KR20170129094A | 2017-11-24 | |||
| KR101771171B1 | 2017-08-25 | |||
| KR20190059216A | 2019-05-30 | |||
| KR20020062838A | 2002-07-31 | |||
| US8632865B2 | 2014-01-21 | |||
| US6663928B2 | 2003-12-16 | |||
| EP3863831A1 | 2021-08-18 |
Other References:
See also references of EP 3868813A4
Attorney, Agent or Firm:
FIRSTLAW P.C. (KR)
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