| 摘要 |
<p>A composite sheet has a substrate layer, a coating layer and a flexible adhesive layer. The substrate layer is preferably a polyester film. The coating layer contains a layer mineral, preferably vermiculite. The flexible adherent layer has a percentage elongation to break of greater than 150 %. The composite sheet exhibits oxygen barrier properties and is suitable for use as a packaging film, particularly when laminated to a heat-sealable layer, preferably of polyethylene.</p> |
