The skin of a non-metallic expansion joint is usually composed of multiple layers of different materials to meet its performance requirements in different working environments. Specifically, the non-metallic expansion joint skin may be made of anti-corrosion composite materials, which usually include Teflon, two-cloth and three-glue fluorine tape with stainless steel wire, tetrafluorine membrane, alkali-free glass fiber cloth, Kevlar Teflon, steel wire mesh, etc. In addition, the skin insulation liner structure also includes stainless steel wire glass fiber cloth, aluminum silicate ceramic fiber cotton, and the like.

In general, these materials are superimposed in a specific number and order of layers to form structures with excellent properties. A common structure is that the skin is made of 7 composites.

However, the specific number of layers, material types, and how they are combined may vary depending on the purpose of the expansion joint, the working environment, temperature and corrosion resistance requirements, and more. Manufacturers usually make customized production according to the specific needs of customers.

In summary, the number of layers and material types normally used for the skin of non-metallic expansion joints are diversified, which can be customized according to specific needs. If you need to know more about the materials and manufacturing methods of non-metallic expansion joint skin, you can call us, and Chuangxin Company will give you the most professional advice.