| 摘要 |
<p>The invention relates to a packaging tube made of a multi-layered, pure plastic laminate (12, 13, 14) and sealing devices for tube heads (11) for packaging products containing volatile substances, such as aromatic or flavouring substances which have a diffusion resistance which is equivalent or comparable to tubes which have a layer of metal as a diffusion barrier in their laminate. The recycling of tubes is thus improved. <IMAGE></p> |
