Plastic champagne stoppers are made of high quality food grade materials. Thanks to modern technologies, polymer corks do not differ too much from cork corks in terms of properties, and are also resistant to alcohols.
Cork stoppers for champagne, sparkling wines are made from cork agglomerate. To prevent contact of the drink with the agglomerate, there is a cork with 4 mm thick cortical discs glued from the end. Cortical discs are obtained from cork bark. Thin bark is the best quality, high density and excellent barrier properties. For inexpensive carbonated wines, you can buy an agglomerated cork without discs.
A carbonated wine cork retains the pressure of gases without releasing them from the bottle. Cork combined agglomerated with discs due to its physical and mechanical properties does not differ much from solid cork and has an acceptable price.
The length of natural champagne corks is usually 47-48 mm with a diameter of 27-30 mm. To prevent the cork from flying out at high gas pressure, a muzzle is put on top of the cork with or without a plaque. Foil and a label for champagne will help to complete the bottle.