The role of cork in the Wine Process

Wine cork stopper is believed to be the only sealing material, which allows wine to “live” and mature in the bottle. Before cork was used many wine makers used oil soaked rags to seal the wine bottle. Now wine corks are made from specially selected corkwood, which is cut into shape, carefully inspected for flaws, washed, sterilized, and printed. Cork is a suitable material for use as a bottle stopper because of the cellular structure of cork, its compressibility upon insertion into a bottle. The interior diameter of the neck of glass bottles tends to be inconsistent, making this ability to seal through variable contraction and expansion an important attribute.

There generally are 4 types of cork stoppers Natural wine cork stopper, Agglomerated wine cork stopper, Fine Grain Agglomerated wine cork stopper, and Techincal 1+1 wine cork stopper (used for champagne)On advance Cork international they advertise selling the following:

Natural Wine Cork Stopper

It is only a natural cork that can assure maturing of wine without interfering with natural harmony of the drink. Then natural cork closure is manufactured by punching a one-piece cork strip. The most popular sizes that are used in Natural wine cork stopper are :

  • Lengths: 44 mm, 38 mm
  • Diameter: 24 mm, 23mm



Agglomerated cork closures are entirely made of granulated cork, derived from by-products that are a result of the manufacture of natural cork closures.
These corks are completely batch homogeneous.

Fine Grain Agglomerated Cork Stopper-

NOVO cork closures are entirely made of granulated cork, derived from by-products that are a result of the manufacture of natural cork closures. These closures are manufactured by individual molding. These corks are completely batch homogeneous.

Technical 1+1 Cork Stopper

They consist of a very dense agglomerate cork body with natural cork disks on both ends and is realatively very resiliant. Combining natural cork ends with an agglomerated middle makes this cork an economic alternative.

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