What Makes A Resin Zipper Break Under Load
A bag maker pulls a loaded backpack across a counter and watches the zipper track under stress. The teeth hold, yet a small gap opens near the slider. Do resin zippers break easily under heavy use? The answer depends on tooth design, slider fit, tape strength, and how the finished product handles the load. A resin zipper from lhmachinery starts with the molding step, and that step decides...
