Flexible Electromagnetic Shielding Material with Nanofiber Web

The patent uses a polymer film as the base substrate instead of rigid metal plates, enabling the shielding material to be flexible and adaptable to various shapes. The conductive coating layer is formed on this flexible polymer film, maintaining shielding performance while achieving the desired flexibility and conformability to complex surfaces.

The patent creates a composite structure combining a polymer film substrate with a conductive coating layer. This composite material integrates the flexibility of polymers with the electromagnetic wave shielding properties of conductive materials, resolving the contradiction between shielding performance and flexibility.

The patent employs a thin polymer film substrate that provides sufficient flexibility for shape conformability. By using the polymer film itself as the flexible base rather than increasing thickness, the material can adapt to complex surfaces while maintaining the necessary flexibility.

Instead of relying on mechanical thickness for flexibility, the patent substitutes with a inherently flexible polymer film material that provides flexibility at thin dimensions. This allows the shielding layer to be thin and effective while the polymer substrate provides the needed flexibility without compromising shielding performance.

The patent optimizes the parameters of the conductive coating layer, including its thickness, composition, and formation method, to achieve sufficient electromagnetic wave shielding performance. By carefully controlling these parameters, the coating provides effective shielding while maintaining the flexibility of the underlying polymer film substrate.

The patent creates an optimized composite structure where a conductive coating layer with specific properties is formed on a polymer film substrate. This composite design ensures that the conductive layer provides adequate shielding performance while the polymer substrate maintains flexibility and shape adaptability.

The patent uses a flexible polymer film substrate that can bend and conform to stepped portions and uneven surfaces without cracking. The flexibility of the polymer film allows the entire shielding structure to adapt to complex geometries while maintaining structural integrity and preventing delamination of the conductive coating layer.

The flexible polymer film substrate acts as a cushioning layer that absorbs and distributes stress during bending operations. This pre-compliance design prevents stress concentration that would otherwise cause cracks in the conductive coating or delamination at interfaces, allowing the material to conform to complex shapes while maintaining structural integrity.