Easy-to-recycle PETG copolyester and heat shrinkable film containing the same and recycling method thereof
By introducing the fourth monomer during the synthesis of PETG copolyester and introducing plastic degradation masterbatch into the heat shrink film, the degree of cracking of PETG copolyester during the thermal cracking process is improved, the problem of poor material performance after recovery is solved, efficient recycling and recycling of PETG copolyester materials is achieved, and the mechanical properties and aging resistance of the heat shrink film are improved.
Patent Information
- Application Number
- CN202411252502.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-09
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2044-09-09
AI Technical Summary
After thermal cracking of existing PETG copolyester materials, the presence of dimers, trimers and other polymers leads to poor material performance after recovery, which cannot meet the use requirements of the heat-shrinkable film industry.
By introducing a certain proportion of the fourth monomer in the synthesis process of PETG copolyester and introducing plastic degradation masterbatch into each layer of the heat shrink film, the degree of cracking of the material during the thermal cracking process is improved, the generation of polymers is reduced, and the recovery capacity and performance of the material are improved.
It realizes efficient recycling and recycling of PETG copolyester materials, reduces recycling and regeneration costs, improves the mechanical properties and aging resistance of the heat shrink film, and meets the use requirements of the heat shrink film industry.