Vetrotex France

Vetrotex Saint-gobain

Eric Augier

Patrick Moireau

Timothy Johnson

Jacques Mahler

Barbara Soszka

Michel Arpin

Didier Muller

A process and device for manufacturing cut threads according to which glass threads composed of continuous filaments are coated with a liquid non-aqueous size, which can react under the effect of actinic radiation. The threads are cut by a member which is also used to draw or entrain the threads mechanically before they are subjected to actinic radiation.

Process for manufacturing cut threads and associated device

A sizing composition is provided that includes at least one silane satisfying the following formula:

Reinforcing glass strands and composites resistant to corrosive media

A process for producing coated glass yarns which comprises drawing a plurality of fibers formed from strands of molten glass, applying to the strands a sizing coating comprising at least a monounsaturated or polyunsaturated oligomer and a photostarter composition such as a photoinitiator compound, a photosensitizer compound or a mixture thereof and optionally an organic solvent and an additive composition comprising at least one of a wetting agent, an adhesion promoting agent, an antishrinking agent and a coupling agent, gathering the coated strands into a yarn and irradiating the coated yarn with a source of actinic radiation. An apparatus for performing this process comprises a spinneret having a plurality of nozzles or orifices, from which strands of molten glass are discharged, means for drawing a plurality of glass fibers from the spinneret, at least one coating applicator for applying the sizing coating to the glass fibers, guide means for gathering the coated fibers into a yarn and an irradiation enclosure wherein the coating is crosslinked and/or polymerized by the effect of at least two sources of actinic, preferably ultraviolet, radiation.

Process and apparatus for producing coated glass yarns and sizing

Process and apparatus for producing coated glass yarns

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Chambery, France

Eric Augier