To provide a polyester fiber structure hardly losing resilience in the thickness direction and excellent in bulkiness, cushioning properties, stretchability in a fiber structure comprising a face side fabric, a lining fabric, and an internal yarn linking those two fabrics.
This polyester fiber structure is a fiber structure comprising at least a face side fabric, a lining fabric, and internal threads linking the two fabrics in which the internal thread is a conjugate fiber comprising a polyester fiber (fiber A) having ≥10 decitex monofilament fineness, 5-30 filaments, and a layer line-like 4 spot scattering pattern in a small X ray pattern and a polyester fiber (fiber B) having ≥15 filaments, ≥1.36 specific gravity, ≤0.4 degree of amorphous orientation and a layer line-like scattering pattern in a small angle X-ray scattering pattern.
OTA TAKASHI
SHIMOYAMA SATORU
