| 摘要 |
Apparatus 10 for cutting and sealing plastics materials including an anvil 30 comprising: a resilient support 40 defining at least part of a working face 32 of the anvil 30; and a cutting member 42 comprising an elongate body 44 with a longitudinal axis LL and a plurality of parallel cutting edges 46. The cutting edges 46 are spaced around the longitudinal axis LL of the elongate body 44, and the cutting member 42 is mounted in the resilient support 40 with one cutting edge 46 exposed at the working face 32 of the anvil 30. The cutting member 42 maintains a constant spacing between portions of the resilient support 40 on opposite sides of the cutting member 42 during compression of the resilient support 40. There may be four cutting edges 46 which may be equally spaced around the longitudinal axis LL. The cutting member 42 may have a cruciform cross section. There may be an elongate die 20 with a heating element positioned opposite the working face 32 of the anvil 30 and it may be movable between a first and second position. |
