compared with other polymers polyether amides are generally available as a solution and as a u201c hot melt u201d version polyether amide in solution form is as a rule used for the preparation of prepregs in which case fibre reinforcements if used are impregnated with a solution that contains a polymer and a suitable solvent the hot melt polymer is directly useable for example in a rtm method or in pultrusion provided that the components are heated about 160 u00b0 c in order to lower the viscosity to a suitable level in the manufacture of the doctor blades in accordance with the present invention comprising polyether amides the following techniques can be applied which techniques are also suitable for other thermosetting plastics manufacture by means of prepregs setting and autoclave treatment pultrusion compression moulding and rtm resin transfer moulding from the point of view of doctor blade manufacture the use of polyether amide accords the following advantages 1 very low exothermic generation of heat during hardening reaction 5 times lower than with epoxies and 10 times lower than with bismaleimides even thick parts are possible since polyether amide has good adhesion among other things to ceramics and to metals if necessary or desired various ceramic or metallic filler particles can be mixed with polyether amide in a matrix without considerable deterioration of the mechanical properties.