The possibility of preparing a high-molecular polycaproamide having a relative viscosity of 3.05–3.25, of improved quality, has been demonstrated on existing industrial apparatus, carrying out the final polycondensation process in a single step.
The effect of the degree of polyamidation of polycaproamide on the strength of technical-purpose yarn has been examined.
The effect of the form of chromium-plated fibre-conducting equipment in the KV-III-250 KA machine on the properties of polycaproamide yarn of 187 tex linear density which has been treated with lubricant Teprém-6 is described.
The effect of stretch ratio, the ratio of stretch ratios in the “cold” and “hot” zones, and of the relative viscosity of polycaproamide on the degree of its breakdown during stretching have been examined.
The operation of electrically heated melt-spinning heads with forced polymer feed has been investigated on machines for spinning low thread-number Capron fibre.