RPET Fabric Manufacturing Process: GRS-Certified Production of Eco-Friendly Materials for Bags and Handbags
RPET (Recycled Polyester) fabric has become a revolutionary material in the bag manufacturing industry due to its environmental benefits and GRS certification. This article details its production workflow and technical highlights.
1. Raw Material Recycling
Post-consumer PET bottles are collected and sorted by automated systems, achieving 98% purity through infrared identification and air separation technologies.
2. Deep Cleaning System
Sorted flakes undergo three-stage chemical-free cleaning with 85℃ hot water. The closed-loop water treatment system reduces freshwater consumption by 90%, meeting GRS environmental requirements.
3. Pelletizing Process
Purified flakes are melted at 265-285℃, filtered through 15μm screens to remove impurities. GRS-certified factories must prove 100% traceability of recycled content.
4. Fiber Spinning
Extruded polymer is drawn into 0.18-0.28mm filaments. Advanced spin finish application ensures fiber strength reaches 4.8cN/dtex, suitable for heavy-duty bag fabrics.
5. Weaving & Knitting
Yarns are processed into 600D Oxford weave fabrics. Digital Jacquard looms enable customized patterns while maintaining GRS chain-of-custody standards.
6. Sustainable Finishing
Water-based PU coating and OEKO-TEX certified dyes are applied. Testing shows RPET bag fabric achieves 8,000+ Martindale abrasion cycles and 1,200mm hydrostatic pressure resistance.
