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What Is Cork Made Of
Jun 15, 2017

Cork consists of suberin cells in the shape of tiny pentagonal or hexagonal honeycombs, a complex fatty acid and filled with an air-like gas, which makes up 90% of its volume. It possesses an average density of around 200 kg/m3 and low thermal conductivity.

• suberin (45%) - main component of the cell walls, responsible for the elasticity of the cork;
• lignin (27%) - insulating compound;
• polysaccharides (12%) - components of the cell walls that help define the texture of the cork;
• tannins (6%) - polyphenolic compounds responsible for the colour;
• seroids (5%) - hydrophobic compounds that guarantee the impermeability of the cork.


Xi'an Dongfang Cork Co.,Ltd