The cork on the thermos is usually made of cork, commonly known as cork, cork, and cork.

Cork (phellem), commonly known as cork, cork, cork, is the product of the outer bark of a very developed tree species, and the surface protection tissue of the stem and root after thickening and growth. It was used in ancient Egypt, Greece and Rome to make fishing net floats, insoles, corks, etc.

There are records of cork in the Spring and Autumn Period in China. The main tree species that produce cork are cork oak and cork oak. Usually the plants that are 20 years old or above and have a diameter of more than 20 cm can be peeled for the first time, and the obtained skin is called scalp skin or primary skin. In the future, it is harvested and peeled every 10 to 20 years, and the obtained skin is called regenerated skin, and the thickness of the skin is more than 2 cm.

Disadvantages of cork floors

1. Poor wear resistance and compression resistance

The deformation of an object is divided into elastic deformation and plastic deformation. Elastic deformation can be recovered, but plastic deformation cannot. If it exceeds the range of elastic deformation, it becomes plastic deformation and cannot be recovered. If you step on a cork floor with a sharp heel, the crater that occurs may be irreversible.

In daily life, it is best to wear soft-soled shoes to walk on the cork floor to prevent sand from being brought into the room. It is recommended to lay a foot pad at the door and remove the sand brought into the room in time to reduce the wear and tear of the floor.

2. It is not easy to clean

It is this structure that makes it easier to store dust, requires correct use and maintenance, and is more careful in cleaning and care. The waterproof and anti-corrosion performance of ordinary cork flooring is not as good as that of laminate flooring, and moisture is more likely to penetrate. It is necessary to prevent ink, lipstick, etc. from getting on the floor, otherwise it will easily penetrate and be difficult to clean.