GELATED PRE-ORIENTED FILAMENTS AND METHOD FOR THEIR MANUFACTURING AND FIBRE FROM ULTRAHIGH MOLECULAR WEIGHT POLYETHYLENE AND METHOD FOR ITS MANUFACTURING Russian patent published in 2016 - IPC D01D5/04 

FIELD: textiles, paper.

SUBSTANCE: method of manufacturing gelated pre-oriented filaments is disclosed, and gelated pre-oriented filaments manufactured by the proposed method. The method comprises: feeding a spinning additive to the twin screw extruder for mixing and extruding it, to obtain a first spinning solution having a non-Newtonian index constituting 0.1-0.8, and the structural viscosity index constituting 10-50; feeding a first spinning solution to the spinning container and drawing-off in the die ensuring the degree of draft of 5-20 for obtaining the drawn material; carrying out rapid cooling and solidification of the drawn material for obtaining gelated pre-oriented filaments. Also the following was created: a method of manufacturing fibre from ultra high molecular weight polyethylene by using the method described above, and the fibre manufactured according to this method. The gelated pre-oriented filaments manufactured according to the method described above are used for the manufacture of fibre from ultra high molecular weight polyethylene in an amount of broken filaments per 10 km of the filaments, not exceeding 2 filaments, with drawing of 40-55. The fibre manufactured from ultra high molecular weight polyethylene has a linear density of less than 2.2 denier (2.44 dtex).

EFFECT: improved mechanical properties.

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