The polyvinyl alcohol (PVA) fibers are promising for the creation of composite materials (CM) on their basis. Lupinovich and Orekhova [1] used PVA fibers 50-100/xm long as dispersed fillers in t~DT-10 binder. The present article explores the possibilities of using continuous PVA fibers for the creation of organoplastics. Besides the properties of unidirectional composites, obtained by winding, we have also investigated the properties of the fibrous fillers and of the fiber-binder interface; the properties of the t~DT-10 epoxy matrix have been discussed earlier [2-4]. Such a combined approach will make it possible in the future to create composites with predetermined properties. Multifilament threads of two types of fibers were used in the study: water-soluble (WS) and water-insoluble (WIS) fibers. The tack, the density p, the humidity w, and the load P, required to rupture the threads, were measured. The diameter d and the strength c~ of single threads drawn from the fibers was determined and stress-strain diagrams c~-e constructed. The loads were measured on tensile-testing machines of the Shopper or Instron type with a precision of 1% ; the diameter of the fibers was measured under the microscope with a precision of 0.2 /xm. The density # was determined by hydrostatic weighing in ethanol, since one of the fibers is water-soluble; the humidity w was obtained from the loss in mass after drying at 100~ for 2 h, precision of weighing 0.1 mg. The chemical structure of the surface of the PVA fibers was investigated by x-ray photoelectron spectroscopy (XPS). The XP spectra were obtained on an I~S 2401 spectrometer with a magnesium anode. The capacity of the x-ray tube was 200 W, the pressure in the analyzer chamber was 10 .6 Pa. The morphology of the fiber surface was studied by means of electron microscopy. All fibers were investigated in the state as delivered. The matrix employed in the tests was the widely used, tectmologically effective 12,DT-10 epoxy binder (an analog of DGEBA). One of the main reasons for the choice of the given binder is the possibility of significant variation of the hardening temperature [3-5], since the conditions of heating (temperature and time) of the organoplastic during its preparation can influence significantly the strength of the polymeric fibrous filler. The adhesion of the binder to the filler was estimated from the shear adhesive strength 70 directly in the I~DT-10PVA single-fiber joints; the procedure for the sample preparation, and the performance of the measurements and the treatment of the results have been described in [3, 4]. The tensile strength of wound composite materials was measured on rings 1 mm thick, with a diameter of 150 mm by means of half-discs, the bending and shear strengths on segments of the rings, using a three-point loading scheme; the thickness of the rings in bending was 1 mm, in the shear tests 2-5 mm; the ratio of the distance between the supports L to the thickness of the sample h was L/h = 5-8.5 in shear and L/h = 30 in bending. The dynamic testing of the composite materials was carried out on equipment which developed loading speeds up to 500 sec -1 at the conditions of three-point bending. Samples of length L' = 45 mm, width b = 4.2 ram, and height (thickness) h = 2.9-3.7 mm were tested. The specific impact strength A was calculated from the equation A = A'/bh, where A' is the total work spent on the destruction of the sample, bh is the cross-sectional area on which the destruction has occurred; the value of A' was determined as the area under the curve, the load P as the displacement s; the values of P and s were obtained from the oscillogram of the force, acting on the sample P = P(t). The oscillograms were treated by computer, using a special program.