| 摘要 |
A sheet structure (e.g. 310) has oriented layers of nylon (312) and EVOH (314); additional layers may or may not be utilized, and may or may not be oriented. Where additional layers are used, one of the additional layers (320) on the exterior surface of the structure (310) is preferably heat sealable. A retortable pouch made from this structure has improved impact resistance after retort processing, over similar structures having no oriented nylon and EVOH layers, and can have improved stress crack resistance when dropped onto a hard surface. |
