Abstract:
A method for producing asphalt fibers (26) includes supplying molten asphalt (20) to a rotating asphalt spinner (10), centrifuging asphalt fibers (22) from the asphalt spinner (10), and collecting the asphalt fibers (26). The molten asphalt (20) is supplied to the asphalt spinner (10) at a temperature within the range of from about 270 DEG F (132 DEG C) to about 500 DEG F (260 DEG C). Also disclosed is a method for integrating asphalt with reinforcement fibers including the steps of establishing a downwardly moving veil of reinforcement fibers, such as glass fibers, and centrifuging asphalt fibers from a rotating asphalt spinner positioned within the veil of reinforcement fibers to integrate the asphalt with the reinforcement fibers. A method for making an asphalt roofing shingle includes the steps of assembling together a mat of asphalt fibers with a mat of reinforcement fibers, coating the assembled mats to form an asphalt-coated sheet, applying granules to the asphalt-coated sheet, and cutting the asphalt-coated sheet into roofing shingles. The invention also includes the asphalt roofing shingle made by this process. Further, the invention includes asphalt highway reinforcement products containing asphalt fibers, and the method of making such products.
Abstract:
Methods, apparatuses, and devices are disclosed for collecting a veil including long fibers with high speed conveyor surfaces to produce a web of loosely related fibers, and further forming a wool pack by distributing the web of fibers with low frequency sound. The methods, apparatuses, and devices are particularly useful in collecting long fibers and producing wool packs including long glass fibers.
Abstract:
A method and device is disclosed for distributing a veil by applying low frequency sound to at least one portion of the veil, and causing the veil to deviate in its generally downward direction of travel. In its simplest embodiment, the lapping device of the present invention includes one low frequency sound generator having one resonator tube shaped for emission of low frequency sound and having an open end from which sound may be emitted to a portion of a veil. Preferably, the lapping device has two resonator tubes whose open ends are in spaced, opposing relationship, and in the preferred method low frequency sound is alternately applied at generally opposing locations near the veil, causing portions of the veil to deviate in generally alternate directions in its direction of travel.
Abstract:
An apparatus for manufacturing high quality glass wool fibers, and more particularly to a spinner (12) including a radiation shield (46) is disclosed. The spinner includes a number of radiation shield positioned beneath the spinner base and decreases the temperature gradient along the peripheral sidewall (18) of the spinner and improves the quality of the glass fibers (22). One suitable material for the radiation shield is a high temperature nickel alloy.
Abstract:
An apparatus for manufacturing low diameter, high quality glass wool fibers, and more particularly to a spinner for centrifuging low diameter glass wool fibers to improve light-density building insulation is disclosed. The spinner includes a number of glass orifices positioned predetermined column angle and provides a hole pattern that improves the quality of the glass. The improved hole pattern is determined by experimentation and may be implemented in any glass fiberization process.
Abstract:
A method for producing mineral fibers (16) includes centrifuging mineral fibers (16) from one or more rotary mineral fiber spinners (10) to establish one or more downwardly moving veils (22) of mineral fibers (16) positioned above a collecting surface (12), centrifuging organic fibers (34) from molten organic material (32) using one or more rotary organic fiber spinners (24) to establish one or more downwardly moving veils (38) of organic fibers (34) positioned above the collecting surface (12), the veils (22) of mineral fibers (16) being generally collinear with the veils (38) of organic fibers (34), the veils (38) of organic fibers (34) alternating with the veils (22) of mineral fibers (16) to integrate the organic material and the mineral fibers (16), and collecting the integrated organic material and mineral fibers (44) on the collecting surface (12).
Abstract:
Fibrous material webs and methods of making the fibrous material webs. Binderless webs can be formed in a continuous process where fiber material, such as glass is melted and formed into fibers. The fibers are formed into a web of binderless glass fibers or a web with a dry binder. The binderless web or the web with dry binder can be layered and/or the fibers that make up the web can be mechanically entangled, for example, by needling.
Abstract:
The present invention provides a binder composition comprising a low molecular weight polycarboxylic acid, such as maleic anhydride, and a low molecular weight poly alcohol, such as polyvinyl alcohol, that exhibits improved cure performance with reduced emissions without sacrificing the performance of the final product or complication the manufacturing process. The binder composition may also incorporate a cure catalyst or accelerant such as sodium hypophosphite.
Abstract:
In a method for making bicomponent polymer fibers (38), first (A) and second (B) molten polymers are supplied to a rotating spinner (10) having an orificed peripheral wall (32). The molten polymers (A,B) are centrifuged through the orifices as molten bicomponent polymer streams. The streams are cooled to make bicomponent polymer fibers (38).
Abstract:
A method for fiberizing mineral material (18) with organic material (36) includes centrifuging mineral fibers (20) from molten mineral material (18) with a first rotating spinner (10), changing the direction of the mineral fibers (20) to form a downwardly moving veil (26) of mineral fibers (20), establishing a flow of molten organic material (36) moving toward a second rotating spinner (28) positioned within the veil (26), dividing the flow of molten organic material (36) into a plurality of streams, directing, by means of conduits (44), individual ones of the plurality of streams toward the peripheral wall (46) of the second rotating spinner (28), the conduits (44) shielding the molten organic material (36) from heat from the first rotating spinner (10), and centrifuging organic fibers (38) from the molten organic material (36).