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1945 Theatre Catalog, 4th Edition, Page 136 (114)

1945 Theatre Catalog, 4th Edition
1945 Theatre Catalog
1945 Theatre Catalog, 4th Edition, Page 136
Page 136

1945 Theatre Catalog, 4th Edition, Page 136

IN BLANKETS OR IN BATS, Fiberglas can also be used as insulating material. At the left is seen a worker installing a Fiberglas thermal-and-acoustical blanket in the cabin of a Pennsylvania Central Airlines Capitaliner plane. At the right, two men install Fiberglas in bat farm in the roof of a building. This product

ers, industrial ovens, insulation of homes and other buildings, railroad cars, ships, buses, and trucks. The bulk fibers are generally employed as an accessory material, for stumng or packing into odd spaces. Shredded Fiberglas insulation is used whenever pneumatic application is called for.

Fiberglas blankets faced with flameproofed muslin or kraft paper are used extensively to insulate buildings, refrigerated freight cars, railway passenger cars, trucks, trailers, and buses. Blankets with a facing of incombustible Fiberglas cloth are used to insulate aircraft and aircraft equipment.

With a metal-mesh facing, the blankets are employed for the insulation of heated equipment such as boilers, tanks, industrial ovens, large ducts and breechings. Temperature limits of Fiberglas blankets vary with the facing material used. Temperature limits of the Fiberglas itself are the same as for bats and rolls.

Fiberglas semi-rigid or rigid sheets or boards are used for building insulation. They are also employed in all types of low- and medium-temperature equipment. In equipment operating at tem peratures above 450 degrees, Fahren-'

heit, the resin used as a binder disap pears from the hot side, leaving a layer

of unbonded fibers which fulfills its in Isulation function with unimpaired ethcency up to 1,000 degrees Fahrenheit, so

long as it is enclosed by supporting sur faces. Sheathed on all sides with a tough,


durable asphalt coating, Fiberglas board is widely used in cold storage service, and performs efficiently under conditions of moisture and temperature variations such as exist in refrigerated spaces. An asphalt-enclosed board with a density of 9 pounds to the cubic foot can be used for the insulation of floors and the construction of self-supportingebut not load-bearingepartitions. A 6-pound density, asphalt-enclosed board is made for use only on ceilings, and on walls where the structure carries the whole load.

Fiberglas boards accurately molded into cylindrical form provide a convenient and eihcient material for insulating steam and other pipes in all standard sizes. A blanket-type insulation with a metal-mesh facing is also employed for insulating pipes.

A high-temperature block is available for insulating boilers, breechings, heated tanks, casings, ducts and other heated process equipment. There is also a Fiberglas insulating cement which can be used over Fiberglas insulation blocks and blankets to provide a monolithic insulation for pipes, tanks, ovens and other types of heated equipment.


Incombustibility and dimensional stability are rare properties in textiles. It is the possession of these properties that is largely responsible for the numerous current uses of Fiberglas textiles, and for the interest the textile industry is showing in exploring possible additional


of the Owens-Corning Fiberglas Corporation, being real glass, is absolutely fireproof. Where the blankets or panels are faced with flammable materials, the surfacing material can, of course, be fire-proofed by approved means, Fiberglas materials of these types are easily cut or fitted to the required shapes and sizes.

uses, both of the glass fibers alone and in combination with other fibers.

Electrical Applications

Fiberglas tapes, braids, cloths and sleevings, impregnated with a suitable varnish were being widely employed as electrical insulation in motors, generators, transformers and other electrical units before the war. The same characteristics that caused Fiberglas electrical insulation to be so widely used in war applicationsea small space factor and resistance to high temperatures and moisture penetrationeare proving a major aid to design engineers in their continuing efforts to give electrical equipment greater stamina and to reduce the size and weight of units required to do a given job. For special uses, Fiberglas-insulated motors have been made that weigh only a pound per horsepower. As during the war period, Fiberglas tapes and cloths are employed to wrap insulated piping on ships and exhaust pipes on planes. Use of Fiberglas fabrics as reinforcement for plastics is

rapidly expanding.

Fiberglas-Reinforced Plastics

In fabricating Fiberglas-reinforced plastics, layers of Fiberglas cloth are impregnated with a low-pressure, thermo-setting resin and are placed, one on top of another, until a laminate of the

desired thickness is built up over or in

a mold; or the laminate may be built up and then draped over, or shaped in, a mold. The mold, and the laminate

1945 Theatre Catalog, 4th Edition, Page 136