You will find Delrin® homopolymer acetal in plastic zippers as the teeth are very small in detail. The extra rigidity that is provided by Delrin® makes it the ideal material for this application.
Compared to acetal copolymer, Delrin® acetal homopolymer offers higher tensile strength, stiffness, creep and fatigue resistance, and significantly higher impact resistance. The extra mechanical properties of Delrin® allow for parts to be made thinner and smaller, whilst delivering the same performance of a thicker, less compact copolymer acetal moulding.
Spotlight on Delrin®:
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