| 摘要 |
An intermediate layer (Z) separates a base layer (B) and a top layer (D). The intermediate layer contains 75 wt.% sealable polyolefins in relation to the intermediate layer. The top layer contains at least 75 wt.%, in relation to the top layer, of sealable polyolefins. The minimum sealing temperature of the polyolefin of the top layer amounts to at least 100 degrees C and is higher than the minimum sealing temperature of the polyolefin in the intermediate layer. |
