Blog

Why do polyester garment seams develop waves or wrinkles after sewing or washing? Learn how thread tension, feed imbalance, stitch density, fabric stretch, Lycra recovery and differential shrinkage cause seam puckering—and how garment factories can prevent it.

Why does polyester fabric develop melted holes, glazed fibres or weak seams during high-speed sewing? Learn how needle friction, sewing speed, needle size, thread tension and thermoplastic behaviour cause sewing damage—and how garment factories can prevent it.