Woven Fabric Properties with Different Weave Designs Using Recycled PET Yarns for Portable Chairs

Abstract

This research aimed to explore the practical use of recycled polyethylene terephthalate yarn (rPET) in technical textiles, extending its application beyond the apparel industry. The specific objective was to produce woven fabrics from rPET yarn for the seats of portable chairs, which are commonly favored for outdoor events. Initially, the process involved twisting 300 denier rPET untwisted yarn into rPET-1 (single-yarn) and rPET-2 (two-ply yarn). Six woven fabrics were then manufactured in three different weave designs (plain, twill, and basket). The warp was rPET-1 at a density of 50 ends per inch, while the weft alternated between rPET-1 and rPET-2, each at 40 picks per inch. The results indicated that fabrics with rPET-2 as the weft exhibited superior tensile and tear strength compared to those employing rPET-1 as the weft. Plain fabrics demonstrated the highest tensile strength, while twill fabrics displayed the highest tear strength. Consequently, these two fabric types were selected to produce the portable chairs, in contrast to the conventional portable chairs constructed with polyester fabric. After subjecting the chairs to a compression test with a load of 150 kgf for 5 cycles, the chair with a plain fabric and rPET-2 as the weft proved the most durable. No damage was found on the seat or frame, and fabric stretching was minimal. In essence, this research underscores the potential of rPET in the durability and sustainability of outdoor seating solutions, while also demonstrating the feasibility of applying this recycled material in technical textile applications.