发明授权
- 专利标题： Process and an apparatus for manufacturing bi-axially oriented polyester film from RPET
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申请号： US17439579申请日： 2020-03-27
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公开(公告)号： US12109749B2公开(公告)日： 2024-10-08
- 发明人: Pranay Kothari , Krishna Reddy
- 申请人： Polyplex Corporation Limited
- 申请人地址： IN Uttar Pradesh
- 专利权人： Polyplex Corporation Limited
- 当前专利权人： Polyplex Corporation Limited
- 当前专利权人地址： IN Uttar Pradesh
- 代理机构： Fish & Richardson P.C.
- 优先权： IN 1911010137 2019.03.15
- 国际申请： PCT/IB2020/052943 2020.03.27
- 国际公布： WO2020/188548A 2020.09.24
- 进入国家日期： 2021-09-15
- 主分类号： B29C48/08
- IPC分类号： B29C48/08 ; B29C48/00 ; B29C48/21 ; B29C55/14 ; C08J5/18 ; C08J11/24 ; B29K67/00 ; B29K105/26 ; B29L7/00
摘要：
The present disclosure relates to a process for producing bi-axially oriented polyester (BOPET) film from the recycled polyethylene terephthalate (RPET) granules. The process involves preparing recycled PET (RPET) granules form post-consumer recycled PET (PCR PET) by depolymerization and polycondensation followed by preparing the biaxially oriented polyethylene terephthalate (BOPET) film having recycled polyethylene terephthalate (RPET) up to 100%. The bi-axially oriented polyester film has good elongation, mechanical and/or thermal properties and are similar in quality to virgin PET films useful in high end food and pharma packaging and industrial applications.
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