13 Intact foil is a 100% barrier to all gases Best deadfold properties Easily punctured (tamper evidence) Reflective of radiant heat Conductive (induction sealing) Decorative appeal: all reflective metallics are aluminum Aluminum Foil Characteristics13 Intact foil is a 100% barrier to all gases Best deadfold properties Easily punctured (tamper evidence) Reflective of radiant heat Conductive (induction sealing) Decorative appeal: all reflective metallics are aluminum Aluminum Foil Characteristics