| 摘要 |
<p>An extrusion die with two sets of slots for extruding filaments and said die including a rotatable element for connecting the supply of material to be extruded with one set of slots and then with the successive sets of slots, thereby producing a latticework filament arrangement, as material is extruded through successive slots by rotation of said die; in one embodiment, the material to be extruded through each set of slots is fed from a different supply.</p> |
