PACKAGING FILM WITH DEFINED WATER VAPOUR- AND OXYGEN-PERMEABILITY
- 专利权人:
- COURTAULDS FILMS & PACKAGING (HOLDINGS) LTD
- 发明人:
- ZOBEL, MICHAEL GEORGE REINHARDT
- 申请号：
- NZ19890229939
- 公开号：
- NZ229939(A)
- 申请日:
- 1989.07.14
- 申请国别(地区):
- 新西兰
- 年份:
- 1992
- 代理人:
- 摘要：
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.
- 来源网站：
- 中国工程科技知识中心
