ampac, cincinnati, oh, introduced flexi foilfree hb, an ultrahighbarrier film technology that can achieve moisture, oxygen, and vapour barrier properties approaching aluminium foil laminates, without the use of foil, when incorporated in a laminate. the laminates are said to provide improved packaging yield and lighter weight versus comparable foil substrates, yielding lower greenhouse gases and requiring less energy consumption in manufacturing and distribution.the film laminate is economical a two or threeply flexi foilfree hb composite will provide comparable o2 and wvtr barrier