Vetrotex Saint-gobain

Saint-gobain Industries

Jacques Mahler

Barbara Soszka

Eric Augier

Gilbert Bocquet

Bernard De Massey

Robert Federowsky

Jacques Molinier

Robert Holtmann

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

A process for producing coated, single twist glass yarns which comprises drawing a plurality of fibers formed from fibers of molten glass, applying to the fibers a sizing comprising a thermoplastic, thermosetting or photosetting composition, gathering the coated fibers into a yarn, imparting a continuous rotative twisting movement to the coated yarn and curing the coated yarn so as to polymerize and/or crosslink the sizing coating. An apparatus for performing this process comprises a spinneret having a plurality of nozzles or orifices from which fibers of molten glass are discharged; a device such as a rotating spindle for drawing a plurality of glass fibers from the spinneret; at least one coating applicator for applying the sizing coating to the glass fibers; a guide for gathering the coated fibers into a yarn; a device for imparting a single twist to the coated yarn, such as a strap spindle device and an irradiation apparatus for curing the sizing coating wherein the coating is crosslinked and/or polymerized.

Apparatus for producing coated single twist glass yarns

A process for producing coated, single twist glass yarns which comprises drawing a plurality of fibers formed from fibers of molten glass, applying to the fibers a sizing comprising a thermoplastic, thermosetting or photosetting composition, gathering the coated fibers into a yarn, imparting a continuous rotative twisting movement to the coated yarn and curing the coated yarn so as to polymerize and/or crosslink the sizing coating. An apparatus for performing this process comprises a spinneret having a plurality of nozzles or orifices from which fibers 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; means for imparting a single twist to the coated yarn, such as a strap spindle device and means for curing the sizing coating wherein the coating is crosslinked and/or polymerized.

Process and apparatus for producing coated single twist glass yarns

A glass fiber sizing composition for the reinforcement of resin matrices which comprises one or more adhesive agents, non-ionic lubricants, organo-silanes, and cationic lubricants as well as a coadhesive such as gelatin, another silane or some sort of glass-resin binding agent and demineralized water as a complement. The organo-silanes are from the group comprising the organo-silanes containing an organic chain of the polyazamide type and the organo-silanes whose organic chain contains at least one phenyl radical and at least two secondary or tertiary amine groups. The addition of the organo-silanes to the sizing composition improves the tensile strength of the sized strands. These organo-silanes are good organic glass-resin binding agents and their presence decreases the risk of rupture of the strands during the winding operation.

Aqueous size for glass fibers

Aqueous compositions for the coating of glass fibers used particularly for textiles, a method of applying these compositions to the fibers, and the fibers themselves are disclosed. The aqueous compositions comprise at least one starch, a non-ionic lubricant, a cationic lubricant, emulsifier and at least one organo-silane from the group made up of the organo-silanes comprising an organic chain of the polyazamide type and of the organo-silanes whose organic chain contains at least one phenyl radical and at least one secondary or tertiary amine group.

Growing community of inventors

Chambery, France

Jacques Mahler