| 摘要 |
<p>A tubular support (11) for the winding of material in sheets comprising a corrugated tubular element (12), wherein the corrugated tubular element (12) is positioned inside at least one outer coating element in sheets (13). The internal corrugated tubular element (12) has outer longitudinal portions (14) and inner longitudinal portions (15) connected by annular radial walls (16) which form an inner corrugated wall. The internal corrugated tubular element (12) and outer coating element in sheets (13) are connected in correspondence with the outer longitudinal portions (14). A corrugated tubular element (112) positioned between two coating elements in sheets (113, 113'), outer and internal respectively, can also be envisaged.</p> |
