C - Chemistry – Metallurgy – 03 – C
Patent
C - Chemistry, Metallurgy
03
C
C03C 25/50 (2006.01) C03C 25/12 (2006.01)
Patent
CA 2519574
The invention relates to a method for the production of glass threads coated with a thermoplastic size, wherein flows of molten glass are drawn and discharged from openings in the base of one or several channels in the form of one or several bunches of continuous filaments; the filaments are then arranged into threads which are collected on one or several moving supports. The method consists in depositing a first composition including a coupling agent on the glass filaments and in depositing a second composition including a thermofusible polymer in a molten state when the filaments are arranged into threads at the very latest. The invention also relates to glass threads obtained according to said method and composites containing said threads.
La présente invention concerne un procédé de production de fils de verre revêts d'un ensimage thermoplastique selon lequel on étire des filets de verre fondu, s'écoulant d'orifices disposés à la base d'une ou plusieurs filières, sous la forme d'une ou plusieurs nappes de filaments continus, puis on rassemble les filaments en un ou plusieurs fils que l'on collecte sur un ou plusieurs supports en mouvement, ce procédé consistant à déposer une première composition renfermant un agent de couplage sur les filaments de verre, puis à déposer une deuxième composition comprenant un polymère thermofusible à l'état fondu au plus tard lors du rassemblement des filaments en fil(s). Elle concerne également les fils de verre obtenus selon ce procédé et les composites renfermant lesdits fils.
Besson Yvan
Bourgeoisat Herve
Gas Bruno
Richard Daniel
Goudreau Gage Dubuc
Saint-Gobain Technical Fabrics Europe
Saint-Gobain Vetrotex France S.a.
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