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Polyester sewing thread comes in several constructions, and each behaves differently in the sewing machine and final garment. Thread choice affects seam strength, appearance and durability.

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.