Patent ID: 9587330
Date: 2017-03-07
CPC Classifications: C04B,D01D,D01F,D02J,D10B,E04C

Claim:
1. A method for manufacturing structural synthetic fibers for concretes and mortars which is applicable particularly to a polyolefin-based synthetic fiber for the use thereof in concretes and mortars with a hydraulic binder as a cementing base and increasing the elastic modulus of the same, and comprising the mixture of polyolefin and additives, the formation of threads, a first stretching process, an alternate series of heating-cooling, surface etching and the cutting the threads, is characterized in that once the initial stretching process has been carried out at a determined temperature and before having passed through the process of surface embossing, the continuous threads are subjected to a stabilization phase where they are collected in coils which are maintained for a period of between two days to one week so that they are stabilized and the polymerization and cross-linking process of the fiber is completed; and after the stabilization phase, the coils are collected and the threads are again subjected to heating-cooling and stretching cycles.