Natural cork products: after cooking, softening, drying, directly cutting, stamping, turning, laminating and other methods to make cork cloth, cork coasters, cork crafts, cork paper, cork leather and so on.
Baked cork products: The leftovers of natural cork products are crushed and compressed, and baked in an oven at 260-316 °C for 1 to 1.5 hours. After cooling, they are softwood bricks for low temperature insulation. It can also be produced by a superheated steam heating method.
Cemented cork products: cork fine particles and powder, adhesive (such as resin, rubber) mixed and pressed into cement
Cork products, such as floor veneers, cork insulation boards, cork insulation boards, etc., are widely used in aerospace, shipbuilding, machinery, construction and so on.
Cork rubber products: made of cork powder as raw material and rubber content of about 70%. It has the compressibility of cork and the elasticity of rubber. It is mainly used as a high-quality low- and medium-pressure static sealing material such as an engine, and can also be used as a seismic, sound-proof and friction material.
Cork is commonly known as pine, wood, and cork. The outer skin products of the tree twigs, which are very well developed, and the surface protection tissues of the stems and roots after thickening. Ancient Egypt, Greece and Rome used to make fishing net floats, insoles, cork stoppers and so on. There are records of cork in the Chinese Spring and Autumn Period.
The main species of cork produced are cork oak and cork oak. Plants that are 20 years old or older and have a breast diameter greater than 20 cm can be harvested for the first time. The resulting skin is called the first skin or the primary skin. Afterwards, it is peeled off every 9-10 years, and the obtained skin is called regenerated skin, and the skin is thicker than 2 cm.
