| 摘要 |
<p>The invention provides polymeric films for the storage or packaging of plant material, the film being perforate and having a water vapour permeability of not more than 800g m<-><2> day<-><1> and an oxygen permeability of not more than 200000 cm<3> m<-><2> day<-><1> atmosphere<-><1>, both permeabilities being measured at 25 DEG C with a relative humidity of 75 percent. Various plant materials, for example carrots, tomatoes, calabrese and mushrooms heat sealed in packs of films of the invention have shown improved shelf lives compared with similar plant materials packaged for example in polyethylene cling film or polyvinyl chloride stretch wrap.</p> |
