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thread made from glass. It is made by forcing molten glass through a kind of sieve, thereby spinning it into threads. Fiberglass is strong, durable, and impervious to many caustics and to extreme temperatures. For those qualities, fabrics woven from the glass threads are widely used for industrial purposes. Fiberglass fabrics can also be made to resemble silks and cotton and are used for curtains and drapery. A wide variety of materials are made by combining fiberglass with plastic. These materials, which are rust proof, are molded into the shape required or pressed into flat sheets. Boat hulls, automobile bodies, and roofing and ceiling compositions are some of the uses to which such material is put.


The generic term for a material consisting of extremely fine filaments of glass that are mixed with a resin to give the desired form in a mold. Layers of this combination are laid or sprayed into the mold. See also: Plastic



fiberglass, fibrous glass, glass fiber

Filaments of glass, formed by pulling or spinning molten glass into random lengths; either gathered in a wool-like mass or formed as continuous thread-like filaments having diameters in the range of 10 to 30 µ m. The wool-like material is processed into many forms of varying densities for use as thermal and acoustical insulation. The continuous-filament type is used for textiles, glass fabrics, and electrical insulation and as reinforcement for other materials.


(US), fiberglass
1. material consisting of matted fine glass fibres, used as insulation in buildings, in fireproof fabrics, etc.
2. a fabric woven from this material or a light strong material made by bonding fibreglass with a synthetic resin; used for car bodies, boat hulls, etc.
References in periodicals archive ?
At present, PPG does not operate fibre glass productionA unit in India.
The European fibre glass operation manufactures reinforcement materials for thermoset and thermoplastic composite applications and employs about 550 people in the manufacturing facilities in Hoogezand, Netherlands and Wigan, England, together with a research-and-development facility in Hoogezand.
Currently, McDonald is PPG general manager, reinforcements and leader for fibre glass in the Americas and EMEA (Europe, Middle East and Africa).
The idea of fibre glass stones which can be moved from one eisteddfod to another emerged following last year's Stevens Report calling for the National Eisteddfod to liven up its activities.
Tom) Kerr as vice president, fibre glass, within the company's Glass segment, effective immediately.

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