Abstract:
A glass fiber insulation product comprises irregularly shaped glass fibers of two different glasses having differing coefficients of thermal expansion, with the irregularly shaped dual-glass fibers exhibiting a substantially uniform volume filling nature, and providing improved recovery and thermal conductivity abilities even in the absence of a binder material.
Abstract:
The method for applying granules to a moving coated asphalt sheet includes establishing predetermined blend drop areas on the coated asphalt sheets, depositing background granule drops on the coated asphalt sheet immediately upstream from the predetermined blend drop areas so that the leading edge of the background drop defines the trailing edge of the blend drop, depositing blend drops on the predetermined blend drop areas, and depositing background granules on the remaining portions of the background areas.
Abstract:
A method for manufacturing a mineral fiber product (36) comprises establishing a stream of mineral fibers (18) directing polymeric fibers toward the stream of mineral fibers (18) to cause intermingling of the polymeric material, and applying heat to the polymer fibers (30) so that some of them become softened to the extent that they lose their fibrous form and become attached to the mineral fibers (18) as non-fibrous particles, whereas some of the polymer fibers (30) retain their fibrous form.
Abstract:
The present invention provides an elastomeric-asphalt composition which does not phase separate and which is compatible at high temperatures. This compatible material can be produced without the need to use high shear milling equipment. The elastomeric-asphalt composition is not limited by the tendency of other elastomer polymers to be incompatible with asphalt nor does the composition separate into a polymer-rich phase and an asphalt-rich phase. In a preferred embodiment, the elastomeric materials are SBS and SIS block copolymers.
Abstract:
Aqueous size compositions for glass fibers including melamine formaldehyde resins, phenoxy resins and epoxy coupling agents which are particularly suitable glass fiber reinforcements for thermoplastics. In particular, chopped glass fibers coated with the size are useful in reinforcing acetal composites.
Abstract:
A method for impregnating a strand of filaments during the strand manufacture with thermoplastic or thermoset polymer powder particles is disclosed. The method includes the steps of forming a strand of filaments, keeping the filaments separate, impregnating the filaments with an aqueous slurry containing the powder particles, and drying the filaments to remove the water and produce a strand impregnated with powder particles. The powder particles are present on the strand in an amount of between about 5 to 50 weight percent based on the weight of the impregnated strand. Glass fibers coated with the slurry according to the process of this invention are suitable for impregnation with thermoplastic powders.
Abstract:
An underground storage tank having secondary containment comprising a self-supporting, semi-rigid thin liner (40) located on the inside of the tank (25). The thin inner liner (40) completely lines the inside of the tank and is structurally independent of the tank.
Abstract:
Based on the discovery that Al2O3 strongly retards the dissolving rate of insulting glass fibers in a synthetic lung solution, glass fibers having low alumina contents have been identified that dissolve significantly faster in lung fluid. Moreover, these glass fibers still have adequate durability for insulation purposes and have physical properties which allow current processes to fabricate them into insulation.
Abstract:
Glass fiber septa (30) and insulation product (36) containing septa (30) between two glass wool layers (24) are treated, and thus rendered fire-resistant, by placing a phosphate-containing compound onto or in close proximity to the glass fibers. The phosphate-containing compound relases phosphoric acid when thermally degraded to form a protective silicate phosphate ceramic coating on the surface of the fibers. Exemplary phosphate-containing compounds are mono and diammonium phosphates, dicalcium phosphate, monocalcium phosphate, phosphoric acid, aluminum phosphate, and mixtures thereof.
Abstract:
A feeder (10) for the production of hollow glass filaments (20) is comprised of tip assemblies (30) wherein a tube (42) positioned in the tube (32) is in communication with the gas in the fiber forming region immediately below the discharge wall (14) to form a gas filled void in the stream (18) and filament (20).