The calculation of strength properties for the nonwoven technical fabric based on the similarity theory

The authors describe the nonwoven materials, specifically the thermal bound nonwoven fabric, which have new properties and can be used in new areas thanks to the combining of ma-terials and technology. The following factors affect the choice of nonwoven fabrics for relevant domestic or technical products: individual characteristics as well as the comprehensive evaluation that defines the performance of the material usage. The analytical method for the optimization calculation of physical and mechanical characteristics in nonwoven fabrics should present the material as viscoelastic and highly porous continuum with capillary-porous texture and fibrous structure. The similarity theory serves as a foundation for the strength properties calculation of the nonwoven technical fabric.