CO2 Released by artificial stoppers
CO2 retained by cork stoppers
Why is cork a good closure for wines?
Cork’s success over centuries lies in its unique physical properties that no man-made closure has been able to replicate: lightness, compressibility, elastic memory, gradual recovery, impermeability to liquids and resistance to wear, heat and rot.
Cork also allows a minute amount of oxygen to permeate into the wine after sealing. This appears to have a beneficial impact, but more research is needed to understand the full contribution of the cork to wine development.
In addition, the introduction of technical corks such as Twin Top, champagne corks and Neutrocork has extended the range of cork products available to suit each wine style and market segment.
With proper handling during and after bottling to ensure the best performance, cork is unsurpassed as a wine closure.
What are the main characteristics of cork?
Cork is a very light raw material, weighing just 0.16 grams per cubic centimetre, and can float.
Each cork stopper is made up of around 800 million watertight cells. Among them is a gaseous mixture which allows it to be compressed to around half its thickness, without losing any flexibility, and to be decompressed and return to its original shape. This is what is called an elastic memory. Cork is the only solid which when compressed on one side, does not increase in volume on the other. This feature enables it to adapt to variations in temperature and pressure, without compromising its integrity as a stopper.
Thanks to the suberin and ceroids, it is practically impermeable to liquids and gases.
Cork is highly resistant to moisture, and therefore to subsequent oxidation and decay.
Cork is an excellent thermal, acoustic and vibration insulator. In relation to wine, the insulating properties of cork contribute to cork stoppers being the best protection against variations in temperature.
Biodegradable, recyclable and renewable
Cork is a natural raw material which is 100% biodegradable, recyclable and renewable. A recycled cork stopper is never used to manufacture a new stopper, but its recycling has endless uses, from materials for construction, fashion, sport, art, the aeronautics industry, among others.
Metamorphosis: Innovation and Creativity15/07/2014
The result of a process of research and development around the cork potential
At drinks retailing awards at London15/07/2014
Cork to create a unique dress, created by the renowned designer Kevin Freeman
Cork synonymous with quality15/07/2014
Consumer surveys show that consistently and in different markets – USA, Australia, Germany and China – the cork stopper is a powerful selling point
A Cork Comeback08/10/2013
After a journey to Portugal and to Amorim facilities, Tal Gal Cohen and Snow Shai present: “A Cork Comeback” part of web series “Wine Passions”.
Amorim and O-I Launch Wine Packaging Innovation17/06/2013
HELIX, the cork & glass solution with an ‘unexpected twist’
Corticeira Amorim nominated finalist of the European Business Awards, in the Top 10 Innovative Companies11/01/2013
Corticeira Amorim is one of the 10 selected finalists in the Innovation category, an award rewarding excellence associated with innovation, based on strict ethical principles.
Cork used in state-of-the-art Siemens metro07/01/2013
Amorim provided solutions for the state-of-the-art Inspiro metro, designed by Siemens to be one of the most efficient and sustainable vehicles of its kind, boasting cutting-edge design.
Seal of Sustainability awarded to Corticeira Amorim25/09/2012
Corticeira Amorim acknowledged by the Portuguese Platform for Sustainable Construction as the only gold level company
Anna Loskiewicz, winner of Vitra Design Museum competition12/09/2012
367 projects from 39 countries have responded to the challenge launched by Vitra Design Museum and Domaine de Boisbuchet in partnership with Corticeira Amorim.
Ana Loskiewicz, a Polish designer, is the winner of a competition sponsored by Corticeira Amorim.
Leading Australian winery returns to cork30/07/2012
Leading Australian winery Rusden Wines has announced it is giving up on screwcap closures after five years as a result of persistent quality control issues and will now bottle its entire product range under cork.
Habitable sculptural module made of cork on display in Guimaraes, Portugal09/07/2012
Shelter by GG, a habitable module made of cork, was designed by Gabriela Gomes and is now displayed at Guimarães, the European Capital of Culture. Designed with cork from Corticeira Amorim.
Vitra Design Museum launches a competition in partnership with Corticeira Amorim20/06/2012
Vitra Design Museum launches a competition in partnership with Corticeira Amorim. The Vitra Design Museum in partnership with Corticeira Amorim has recently launched a competition challenging designers from all over the world to design new and innovative uses for cork.