| 摘要 |
<p>The invention relates to an elongated, essentially flat element (1) provided, in particular, for manufacturing a strip based on polycrystalline silicon and comprising a primary ribbon based on expanded and laminated natural graphite. According to the invention, this primary ribbon is constituted of at least two ribbons (1A, 1A') called secondary ribbons that are superimposed and have a weak adherence, said primary ribbon being coated on its two longitudinal sides with a second protective material (1B, 1B').</p> |
