Tests conducted on Kapron woven tapes using a multifunctional Instron and the TIROtest machines under conditions of relaxation, creep, and static tension yielded data for the construction of extension diagrams. Analysis of isochronic dependences showed a significant increase in deformation at small loads. This deformation was less dependent on the synthetic fiber comprising the tape and more dependent on the woven structure of the tape. The hereditary theory of viscoelasticity described the deformation behavior of Kapron tapes. 6 refs.