COMPOSITIONS OF RECYCLED POLYETHYLENE TEREPHTHALATE, FIBERS AND ARTICLES PRODUCED THEREOF, AND METHODS FOR PRODUCING THEM
Patent Information
- Application Number
- MX2022000197
- Authority / Receiving Office
- MX · MX
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2008-09-30
- Filing Date
- 2009-09-30
- Publication Date
- 2026-06-12
- Estimated Expiration
- 2029-09-30
AI Technical Summary
Conventional recycling processes for consumer polyethylene terephthalate (PET) do not produce satisfactory materials for extrusion into fibers, particularly bulky continuous filament (BCF), leading to issues such as unsatisfactory graining and breakdown during processing.
A method involving the use of up to 100% consumer PET collected from curb deposits, combined with virgin PET, and processed through homogenization, crystallization, drying, and extrusion to create homogeneous recycled PET compositions suitable for fibers and BCF.
The method produces fibers with improved consistency and reduced variability, enhancing properties like color uniformity and mechanical strength, suitable for applications like carpets, while maintaining performance comparable to virgin PET.