| 摘要 |
<p>The invention relates to a blown-film die (1, 21, 208) for the production of a multilayer blown film (18) with at least two plastics layers, where this die (1, 21, 208) has at least the following melt-conducting regions (16, 17, 25, 205) and through which the melt passes in succession in the direction (z) of flow of the melt: feed lines (25, 205) leading to the at least two separate slits for the supply of a separate stream to at least two separate slits (16) for the supply of a separate stream to an annular slit (17) for combination to form the film composite (18). There is at least one thermal converter (85, 142) arranged at at least one flow path of at least one separate stream upstream of the annular slit (17).</p> |
