Traditional Natural Cork and Technical Cork with OTR Technology
Oxygen Selective OTR Membrane
(Oxygen Transmission Rate)
Using the molecular sieve properties of some semi-crystalline polymers the unique ProCork membrane selectively allows oxygen to pass through atomically small channels that sieve and slow oxygen’s progress thereby providing the near perfect OTR (Oxygen Transmission Rate) to preserve wine as it is and allow it to mature as it should.
The primary purpose is to apply an OTR technology to the cork and this has the added benefit of blocking TCA and glue contact (in the case of composite corks). This OTR technology has been so effective with regard to TCA that in 17 years and 500 million corks ProCork has had less than ten TCA wines.