产品名称：圆点式气胀轴

圆点式气胀轴采用表面均匀分布的弹性凸点，通过充气膨胀使凸点外凸夹紧卷芯，放气后快速复位。专为轻量化卷材（如标签纸、PET薄膜）及对表面保护要求高的场景设计。

The circular inflatable shaft adopts elastic convex points evenly distributed on the surface, which are compressed and expanded to make the convex points protrude and clamp the core, and quickly reset after deflation. Specially designed for lightweight rolls (such as label paper, PET film) and scenarios with high surface protection requirements.