In this disclosure, filament winding method and system without a resin dip bath are disclosed. The method comprises feeding a fiber on a mandrel without dipping the fiber in a resin bath; and applying a resin onto the fiber at the point of where the fiber contacts the mandrel. In an embodiment, the fiber comprises carbon fiber, basalt fiber, S-glass fiber, S-2 glass fiber, A-glass fiber, C-glass fiber, E-glass fiber, D-glass fiber, Kevlar fiber, ECR glass fiber. In an embodiment, the resin comprises polyester resin, vinylester resin, epoxy resin, phenolic resin, BMI resin, polyurethane resin, cyanate ester resin. In an embodiment, the fiber is fed on the mandrel at an angle of from about 25 to 65, wherein the angle is defined as the angle between the fiber and a horizontal plane when the mandrel is placed horizontally. Further disclosed are parts made according to the instant filament winding method.

A curable aqueous composition is disclosed comprising a carbohydrate, a crosslinking agent, and an amine base, wherein the curable aqueous composition has a pH adjusted by the amine base. Further disclosed is a method of forming a curable aqueous solution.

A curable aqueous composition is disclosed comprising a carbohydrate, a crosslinking agent, and an amine base, wherein the curable aqueous composition has a pH adjusted by the amine base. Further disclosed is a method of forming a curable aqueous solution.

A thermal insulation product includes a mineral wool, the mineral wool including mineral fibers, the fibers having a fiber length population distribution such that the median fiber length by number of the distribution is less than or equal to 2 mm, and that at least 10% of the number population has a fiber length strictly greater than 1.5 mm and, the product including at least one additive, the product having a weight percent of the total of the at least one additive of between 0.4% and 1.2% inclusive.

An aqueous binder composition is provided that includes a carbohydrate and a crosslinking agent. In exemplary embodiments, the carbohydrate-based binder composition may also include a catalyst, a coupling agent, a process aid, a crosslinking density enhancer, an extender, a moisture resistant agent, a dedusting oil, a colorant, a corrosion inhibitor, a surfactant, a pH adjuster, and combinations thereof. The carbohydrate may be natural in origin and derived from renewable resources. Additionally, the carbohydrate polymer may have a dextrose equivalent (DE) number from 2 to 20. In at least one exemplary embodiment, the carbohydrate is a water-soluble polysaccharide such as dextrin or maltodextrin and the crosslinking agent is citric acid. Advantageously, the carbohydrates have a low viscosity and cure at moderate temperatures. The environmentally friendly, formaldehyde-free binder may be used in the formation of insulation materials and non-woven chopped strand mats. A method of making fibrous insulation products is also provided.

A process for manufacturing an acoustical panel comprises mixing an aqueous slurry comprising water and at least about 90 wt. % of mineral wool, glass wool, or a combination of mineral wool and glass wool, the mineral wool, the glass wool, or the combination of mineral wool and glass wool having an average diameter of at least about 5 microns on a dry basis, to produce an acoustical panel having a NRC of about 0.80 to about 1.00 and a CAC of about 30 to about 50.

A system for crosslinking a continuous mat of mineral and/or plant fibers, includes a crosslinking oven for the mat including at least one heating box, each heating box being connected to a combustion chamber. The crosslinking system further includes an injection system arranged outside the crosslinking oven and configured to inject hot air into at least one combustion chamber of a heating box, the hot air thus injected replacing a given fraction of hot air produced by at least one burner attached to the said at least one combustion chamber.

An insulating product includes mineral fibers of aluminosilicate glass including aluminum oxide, Al.sub.2O.sub.3, in a fraction by weight of between 14% and 28%, that are sized with a sizing composition including the following constituents within the limits defined below, expressed as fractions by weight with respect to the total weight of the composition: from 80% to 98% of water, from 2% to 20% of water-soluble poly(furfuryl alcohol), which is obtained by polycondensation of furfuryl alcohol, and less than 0.5% of furfuryl alcohol, wherein a sum of the fractions by weight of the poly(furfuryl alcohol) and of the water is at least 95%, and wherein the sizing composition applied to the mineral fibres has a pH in a range from 5 to 8.

An insulating product includes mineral fibers of aluminosilicate glass including aluminum oxide, Al.sub.2O.sub.3, in a fraction by weight of between 14% and 28%, that are sized with a sizing composition including the following constituents within the limits defined below, expressed as fractions by weight with respect to the total weight of the composition: from 80% to 98% of water, from 2% to 20% of water-soluble poly(furfuryl alcohol), which is obtained by polycondensation of furfuryl alcohol, and less than 0.5% of furfuryl alcohol, wherein a sum of the fractions by weight of the poly(furfuryl alcohol) and of the water is at least 95%, and wherein the sizing composition applied to the mineral fibres has a pH in a range from 5 to 8.

The present invention relates to a method of draining water comprising the steps of: providing a water drainage device, wherein the water drainage device comprises man-made vitreous fibres (MMVF) bonded with a cured aqueous binder composition; positioning the water drainage device in contact with the ground, wherein the water drainage device absorbs water and releases water to a recipient wherein the aqueous binder composition prior to curing comprises; a component (i) in form of one or more oxidized lignins; a component (ii) in form of one or more cross-linkers.