A system and a method of manufacturing continuous glass filament fiberglass media comprises melting glass within a temperature controlled melter. Molten glass exits through a bushing plate with orifices of varying row configurations and orientations. The resulting fiberglass filaments are received on a rotating drum and sprayed with resin and aqueous solution. The resulting fiberglass mat is placed onto a let-off table then sprayed with aqueous solution before further processing.

A system and a method of manufacturing continuous glass filament fiberglass media comprises melting glass within a temperature controlled melter. Molten glass exits through a bushing plate with orifices of varying row configurations and orientations. The resulting fiberglass filaments are received on a rotating drum and sprayed with resin and aqueous solution. The resulting fiberglass mat is placed onto a let-off table then sprayed with aqueous solution before further processing.

Provided are a sizing agent for quartz glass fibers capable of suppressing charging of quartz glass fibers, and suppressing generation of fluff in a production process for quartz glass fibers and a weaving process for a quartz glass cloth, a quartz glass fiber or a quartz glass yarn having applied thereonto the sizing agent, a quartz glass cloth, a prepreg for a printed circuit board, and a product using the quartz glass fiber. The sizing agent for quartz glass fibers includes an aqueous solution containing: a cationic vinyl acetate copolymer emulsion in which a cationic vinyl acetate copolymer having a weight average molecular weight of from 5,000 to 500,000 is dispersed in water; and starch, in which emulsion particles of the cationic vinyl acetate copolymer emulsion have a 50% diameter on a volume basis of from 0.1 m to 5 m.

Provided are a sizing agent for quartz glass fibers capable of suppressing charging of quartz glass fibers, and suppressing generation of fluff in a production process for quartz glass fibers and a weaving process for a quartz glass cloth, a quartz glass fiber or a quartz glass yarn having applied thereonto the sizing agent, a quartz glass cloth, a prepreg for a printed circuit board, and a product using the quartz glass fiber. The sizing agent for quartz glass fibers includes an aqueous solution containing: a cationic vinyl acetate copolymer emulsion in which a cationic vinyl acetate copolymer having a weight average molecular weight of from 5,000 to 500,000 is dispersed in water; and starch, in which emulsion particles of the cationic vinyl acetate copolymer emulsion have a 50% diameter on a volume basis of from 0.1 m to 5 m.

A process for manufacturing a composite yarn comprising a continuous multifilament core yarn incorporated in a matrix, comprising at least one step of depositing, by coating or extrusion, a matrix comprising a polymer material and a reinforcing filler formed from functionalized particles, onto a core yarn. A composite yarn obtained by such process. A textile comprising at least one such composite yarn.

A process for manufacturing a composite yarn comprising a continuous multifilament core yarn incorporated in a matrix, comprising at least one step of depositing, by coating or extrusion, a matrix comprising a polymer material and a reinforcing filler formed from functionalized particles, onto a core yarn. A composite yarn obtained by such process. A textile comprising at least one such composite yarn.

A method for manufacturing glass long fiber using recovered glass fiber, capable of manufacturing glass long fiber in which a recycle rate is increased, increase of a liquid phase temperature of molten glass and narrowing of an operating temperature range of the molten glass are suppressed, and a spinning temperature is low. The method includes a glass melting step of melting a glass raw material containing glass fiber recovered from a glass fiber-reinforced resin molded product, and a glass fiber mineral material to obtain molten glass; and a spinning step of spinning the molten glass to obtain glass long fiber, and a content of the recovered glass fiber in the glass raw material is in the range of 11 to 75% by mass, and differences in the contents of SiO.sub.2, Al.sub.2O.sub.3, B.sub.2O.sub.3, and CaO between the glass fiber mineral material and the recovered glass fiber satisfy a prescribed relationship.

The invention relates to a fibrous mat facer for preparing a gypsum board, to a gypsum board comprising said mat facer and to a system comprising said gypsum board. The fibrous mat comprises at least one ply of a non-woven fabric, and a binder composition, wherein the binder composition represents from 10 to 40 wt % of the total weight of the mat. The binder composition comprises a copolymer comprising a co-monomer unit of a vinyl ester of an alpha branched aliphatic monocarboxylic acid, said copolymer being present in an amount from 25 to 100 wt % of the binder composition weight.

Disclosed is an aqueous binder for an inorganic-fiber heat-insulating sound-absorbing member, comprising a polycarboxylic acid and a crosslinking agent for the polycarboxylic acid, in which the polycarboxylic acid comprises a polycarboxylic acid having a weight average molecular weight of 1000 to 20000 and an acid value of 500 to 900 mgKOH/g; the crosslinking agent comprises a branched polyethyleneimine having a weight average molecular weight of 300 to 2000, and an alkanolamine having a lower molecular weight than the polyethyleneimine and an alcohol valence of 2 or less; the ratio of the total mole of a hydroxyl group, an amino group and an imino group in the crosslinking agent relative to the mole of a carboxy group in the polycarboxylic acid is 0.30 to 0.75; and the ratio of the total mole of the amino group and imino group in the crosslinking agent relative to the total mole of the hydroxyl group, amino group and imino group in the crosslinking agent is 0.34 to 0.80.

Disclosed is an aqueous binder for an inorganic-fiber heat-insulating sound-absorbing member, comprising a polycarboxylic acid and a crosslinking agent for the polycarboxylic acid, in which the polycarboxylic acid comprises a polycarboxylic acid having a weight average molecular weight of 1000 to 20000 and an acid value of 500 to 900 mgKOH/g; the crosslinking agent at least comprises a polyamine without a hydroxyl group, the polyamine having at least one of an amino group and an imino group and having a weight average molecular weight of 100 to 500 and an amine value of 1150 to 1650 mgKOH/g, and a polyol without an amino group and an imino group, the polyol having a hydroxyl group and having a weight average molecular weight of 90 to 250 and an alcohol valence of 3 or more; the ratio of the total mole of the hydroxyl group, amino group and imino group in the crosslinking agent relative to the mole of the carboxy group in the polycarboxylic acid is 0.3 to 1.2; and the ratio of the total mole of the amino group and imino group in the crosslinking agent relative to the total mole of the hydroxyl group, amino group and imino group in the crosslinking agent is 0.01 to 0.2.