| 摘要 |
Tire mold with traceless venting, showing a set of relief ribs (2, 3), corresponding to pattern to be impressed on tread on molding and curing, in which at least a part of said ribs are made from a porous metallic material, suitable for air and gas venting, and are rigidly secured to mold (6) at their bases (4), and in which there is provided a plurality of channels (5) linking said bases (4) with the outside, through the mold body, for venting the air expelled through said porous ribs (2, 3) on molding. |
