| 摘要 |
<p>A seal (1) for a container for commestibles, especially potable liquids, and in particular for use for sealing polyester containers such as bottles, which is suitable for passage through a PET recycling process, comprises a metal foil layer (4), a foam layer (3) and a plastics film layer (2) as well as a heat sealable layer (5) below the foil. The foam is selected for its density and thickness so is to confer upon the seal a high buoyancy. The adhesion a between the foam and the foil is increased compared to currently available products, in order to prevent de-lamination between the foil and the foam during the recycling process.</p> |
