Umbrella production involves a great deal of specialized labor that must work together in a dense chain of production. Numerous processes involved are so delicate they cannot be fully automated, such as punching holes in the segments of metal that link up to form the umbrella skeleton, measuring the stitch interval, and cutting and sewing the cloth. Any errors at any point of the process may cause unevenness or result in leakage.
其實製傘是項人工密集、產業鏈群聚的特殊產業；一把傘的製成，從一節節銜接傘骨的雞眼打洞、量針距、裁切傘布、縫傘等，完全需要人工操作，無法自動化生產，而只要一個環節的疏失，就可能造成傘面不平整甚至漏水。