Abrasive Apparatus having a Material with Variable Stiffness

原文（中国語）

An abrasive apparatus includes a backing pad comprising a filler material having a variable stiffness material configured with a first stiffness when the abrasive apparatus is in a non-working state, and a second stiffness that is higher than the first stiffness when the abrasive apparatus is in a working state. In addition, the abrasive apparatus includes an abrasive surface connected to the backing pad.