Institut Textile De France

Agence Nationale De Valorisation De La Recherche (Anvar)

Claudius Beraud

Robert Guigal

Robert Lehmann

Andre Lyonnet

Jean Jacquemart

The invention relates to a process and apparatus for the treatment of bulky fibrous webs, derived at least partially from thermoplastic fibres, so as to impart cohesion to the webs. The process involves passing the webs between at least one pair of rotating cylindrical metallic electrodes, of which one is connected to a high frequency generator and the other is connected to earth, the web being compressed between the electrodes and being driven by them. One of the electrodes is covered with a layer of dielectric material having a smooth surface, and the discharges produced between the electrodes are partial discharges (or glow discharges), the path of which extends over only a part of the gap between the electrodes, starting from the electrode covered with dielectric material and extending to near the surface of the other electrode.

Process and apparatus for the treatment of fibrous webs

The invention relates to fancy yarns, and a method of making them, in which at least two yarns, of which one forms a core and one an effect yarn, are fed to a junction point and then fed together through a heat treatment zone and assembled into the fancy yarn in a false twisting step, the core yarn having been provided with a thermoplastic binder upstream of the junction point by which the effect yarn is adhered to the core yarn.

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Tassin, France

Claudius Beraud