Abstract: This invention relates to coating materials for fibrous glass and particularly to non-migrating forming size compositons for glass fibers, namely an aqueous size composition comprising a starch solution containing swollen but unburst partially cooked starch granules made from an amylaceous material.

Abstract: A method and apparatus for packaging compressible fibrous batts and a package of same are provided. The batts are formed by severing a longitudinally-extending strip of compressible fibrous material into batts of discrete lengths with the batts then being collected in end-to-end relationship. The batts are then moved into a loop of a packaging machine, which loop is formed by a belt maintained under controlled tension. The batts are fed longitudinally in abutting, end-to-end relationship into the belt loop which places them under compression as they are wound into a package, with the loop gradually expanding in diameter as the package size increases. Tapes are placed directly around the outermost batt to hold the package in the compressed state and the completed package is then discharged from the machine.

Abstract: An electrically conductive paper comprising glass fibers is made by dispersing electrically conductive materials i.e. electrically conductive fibers or particles, with the glass fibers of a paper-making slurry. Paper having an electrically conductive layer and a nonconducting layer can be made. Heating panels are made by adhering the electrically conductive paper to a wall in much the same manner as is wallpaper. A positive electrical terminal is applied to one end of the paper and a ground terminal is applied to the other end of the paper. A flow of electricity through the paper causes the paper to heat and to in turn supply heat to the room which the wall faces.

Abstract: A liquid binder forming material is added to a preform mold, dispersed chopped glass fiber strand is allowed to free fall into the preform mold to build up a layer of chopped fibers wherein substantially all of the strand is horizontal but otherwise randomly oriented, and the layer of chopped strand is forced down into the resin until completely immersed therein. Preferably, thereafter, the preforms so produced are stacked into tubular magazines with separator sheets between the preforms in each magazine; and the magazines are transported first to a maturation room where the viscosity of the binder forming material is increased to above 20 million centipoise, and then to matched metal dies where the preforms are sequentially fed out of the magazine to between the dies which shape and cure the preforms.

Abstract: A glass size composition comprising an epoxy resin emulsion, a polyvinylpyrrolidone and a polyethylene glycol ester mono oleate is particularly suitable for use in epoxy resin filament winding.

Abstract: We have found that if we add a polyhydric phenolic compound such as resorcinol to monohydric phenolic resin/cement systems, we can shorten the gel time sufficiently to use the systems in producing walls. The walls generally are cylindrical and serve to confine a liquid. These systems are especially good for producing large diameter, continuous pipe.

Abstract: Thermoplastic additives comprising the esterification product of a polyol with dimer and trimer acids are blended with thermosetting resins to reduce the shrinkage of the latter on molding.

Abstract: Strips of uncured glass wool, facing material, and backing material are intermittently fed from supply rolls into a multi-cavity molding press, and then into a trim press where molded tiles are severed from each other. A multi-cavity vacuum head transfers the tiles into stacks on a conveyor. When each stack has a certain number of tiles, the conveyor moves the stacks to a packaging station.

Abstract: Apparatus for and method of pneumatically traversing a linear fibrous element during its packaging in a rotated perforated canister as air is withdrawn from the canister through its sidewalls and bottom wall; the air moves downwardly through the package during package formation to prevent freedom of movement to the element in the package and air moves generally horizontally as it is withdrawn uniformly from all sides of the canister through its perforated sidewalls to reduce air turbulence in the canister to promote ordered collection of the fibrous element.

Abstract: A method and apparatus for packaging compressible fibrous batts and a package of same are provided. The batts are formed by severing a longitudinally-extending strip of compressible fibrous material into batts of discrete lengths with the batts then being collected in end-to-end relationship. The batts are then moved into a loop of a packaging machine, which loop is formed by a belt maintained under controlled tension. The batts are fed longitudinally in abutting, end-to-end relationship into the belt loop which places them under compression as they are wound into a package, with the loop gradually expanding in diameter as the package size increases. Tapes are placed directly around the outermost batt to hold the package in the compressed state and the completed package is then discharged from the machine.

Abstract: A stream feeder for supply of streams of molten glass for attenuation into fibers. The feeder is formed of metal and is electric-resistance heated. The bottom wall and sidewalls of the feeder are of varied thickness and are formed from a single sheet of metal. The disclosure also includes method and apparatus for forming the bottom wall and varied thickness sidewalls from a single sheet of metal.

Abstract: The apparatus and method of handling linear textile material to facilitate its processing including withdrawing the linear textile from a source and advancing it along a given path to a handling station; between the source and handling station applying the forces of a stream of fluid media in a direction opposing the movement of the textile material.

Abstract: The method includes use of a stationary hollow mandrel supported at one end, a pair of forming shoes over which strips of material are respectively pulled longitudinally of the mandrel to provide a cylindrical inner liner surrounding the mandrel and a cylindrical outer jacket surrounding the inner liner in spaced relationship thereto, a conduit having an outlet end portion disposed within the outer jacket above the inner liner, supply means for supplying foamable hardenable exothermic reacting liquid material to an inlet end portion to the conduit, additional supply means for separately supplying a fast acting catalyst to the foamable material in the conduit, means for reciprocating the outlet end portion of the conduit transversely over the inner liner, conveyor-mold means confining the outer jacket as the foamable foams and cures, rotatable tire means for pulling the insulation formed by the outer jacket, the cured foam, and the inner liner off the mandrel longitudinally thereof, a traveling saw for cutting

Abstract: Method and apparatus for producing a bead for a pneumatic tire comprising applying a coating to a bundle of glass filaments partially drying but not curing the coated bundle, winding the bundle to form a bead and curing the bead member such as the bead will essentially retain the same geometric cross-sectional characteristics during incorporation into the tire as it had before being incorporated into the tire.

Abstract: A composite panel is provided which comprises an organic foam core with layers of inorganic fibers on opposite major surfaces of the core. The fibrous layers are affixed to the core in a manner such that they are functionally integral therewith, thereby providing dimensional stability for the core. In a preferred embodiment, the panel is embodied in roof insulation which consists of a core of organic foam with a mat of inorganic fibers located on an upper surface of the foam core and a layer of inorganic fibers located on a lower surface of the core. The lower surface of the insulation is affixed to an underlying roof structure by a layer of adhesive and specifically asphalt. Alternate layers of asphalt and fibrous mats are applied over the upper mat of the inorganic fibers to complete the roof insulation system.

Abstract: An improvement in the production of chopped fibers is provided. Long fibers, commmonly in the form of roving, are fed through a chopper assembly comprising a cutter wheel having a plurality of outwardly-extending blades and a back-up roll having a soft cylindrical surface which the blade edges contact with the fibers therebetween. The chopped fibers then are directed downwardly through a discharge chute to a distribution chute below the chopper where they are directed by air to a point of application, e.g. being mixed with resin and applied to a surface of a mold or mandrel. The chopper fibers have had a tendency to agglomerate into hunks or balls below the chopper assembly and such tendency has heretofore been substantially reduced by the use of static bars located below the chopper assembly. An air system is now provided for directing air downwardly past the chopper assembly to convey the chopper fibers therefrom through the discharge duct and the distribution chute.

Abstract: Apparatus for and method of packaging a linear fibrous element in a rotated perforated cannister by withdrawing air from the cannister through its bottom wall to move air through the package during package formation to prevent freedom of movement to the element in the package and simultaneously withdrawing air uniformly from all sides of the cannister through its perforated sidewalls to reduce air turbulence in the cannister to promote ordered collection of the fibrous element.

Abstract: A method of making a cylindrical electrical conductor or roving comprised of a bundle of conductive glass filaments, wherein the filaments are cured under tension in a flat ribbon-like form. The method includes binding the filaments into a preferred cylindrical bundle or roving by the steps of passing the filament bundle through the axial bore of an annular bobbin having a binder yarn or element thereon and rotating the bobbin to centrifugally throw the yarn in an unconfined balloon. The free end of the yarn is secured to the filament bundle, thereby wrapping the bundle with a helical overwrap. The balloon of yarn is controlled and stabilized by air currents generated adjacent the bobbin.

Abstract: The present invention embraces a winder for collection of linear material into a wound package. The winder comprises a driven rotatable collet upon which linear material is collected as a package in a package collection region. The collet includes a temporary collection region adjacent the collection region.