| 摘要 |
<p>A hollow tubular handle (P1-P3) contains the paste and a spiral element to push the paste towards the brush head (1). The head is made with holes (0) between the bristles, through which paste is fed when the spiral inside the handle is rotated by means of a cap (a) on the handle end. The brush head has a cover (g) for the bristles. This is equipped with projecting spikes inside to fit in the paste outlet holes and prevent the paste from drying out between uses.</p> |
