| 摘要 |
Novel hair rollers have resilient monofilaments formed as detents projecting in pairs from a self-supporting cylinder wall. The detents individually have an upstanding leg and an overhang which projects from the leg to be disposed over an opposite area of the cylinder wall. The pairs of detents have their overhangs extending toward each other and disposed at slant angles to planes perpendicular to the axis of the roller, the legs of each pair being spaced by the combined lengths of their overhangs.
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