Material Science: Why We Choose POK Over Traditional Nylon?

For a long time, the encapsulation material of shower room rollers has mostly used nylon (PA66). Although wear-resistant, it has a fatal flaw: high water absorption rate.

In high-humidity environments like bathrooms, PA66 gradually absorbs moisture and expands slightly in volume. This causes the gap between the roller and the track to shrink, and the sliding feel becomes increasingly 'sticky' over time.

MFMK, in collaboration with material laboratories, has comprehensively introduced POK (Polyketone) material.