Research and development of high tenacity sustainable technical yarns

Hilaturas Mar has developed an innovative project based on new friction yarns composed of recycled para-aramid and other materials to obtain high-tenacity technical yarns.

HILATURAS MAR SL as a company with extensive experience in technical spinning, focuses on the manufacture of thick yarns in the DREF friction spinning process, a production technique that no other company in our country has. Our experience defines us, we know all the most efficient spinning and weaving methods, the market and the necessary distribution networks.

In February 2021, the FIL-TEC project that began in September 2019 (IDI-20191305) with the aim of researching and developing high-tenacity sustainable technical yarns came to an end.

At this time, DREF yarns have become our star product with continuous growth, which is why this line of business has become a priority. In this sense, in February 2021, the FIL-TEC project that began in September 2019 (IDI-20191305) with the aim of researching and developing high-tenacity sustainable technical yarns came to an end. This project was financed by the CDTI and co-financed by the European Regional Development Fund (ERDF), through the Pluri-regional Operational Program for Intelligent Growth 2014-2020.

The project

The objective of the project has been the development of new friction yarns composed of recycled para-aramid and other materials to obtain high-tenacity technical yarns.

We have developed a technology for spinning recycled para-aramid staple fiber with a fiberglass core, subsequently modifying said core and/or coating with other technical materials for different industrial applications: fire-retardant fabric for aviation carpet, fabric for “anti-static” upholstery -vandalic”, anti-ballistic fabric and friction fabric for brakes of the positioning system of a wind turbine. In the latter case, in addition to the thread, weaving has been developed.

The main difficulties posed by the project in each development were: obtaining recycled para-aramid fiber suitable for subsequent spinning, defining the configuration of each yarn, its composition, lengths, numbering and sizing, determining the characteristics of carding in terms of clothing (materials, profiles and inserts) and work parameters (speeds, transfer between groups, etc.), spinning parameters and fabric composition, as well as warping and weaving parameters in the case of fabric for wind turbine brakes.

With this project HILATURAS MAR has developed a novel process, not only in the national market, where friction spinning is not used, but also in international markets, given the novel characteristics of the yarns developed.