Material: -uncoated Tyvek web -multi-layer PET/PP copolymer film Sterilization: Plasma sterilization,EO sterilization Features: -Excellent microbial barrier properties against germs,bacteria and moisture; -Extremely high resistance to penetration and fibre-free peeling; -Easy peel and aseptic presentation; -Easy seal with old sealing machines; -Clear and accurate color change