A strong inert material bound into plastics to improve its strength, stiffness, and impact resistance. Usually long fibers of glass, sisal, cotton, etc., in a woven or nonwoven form. See mold release. Any of a class of solid semisolid organic products of natural or synthetic origin, generally of high molecular weight having no definite melting point. Used in reinforced products to surround and hold fibers.
Most resins are polymers.
For filament winding they are generally wound as bands or tapes with as little twist as possible. A lamination composed of two outside layers of rinforced material such as glass mat and an inside layer or layers of honeycomb, glass cloth, or other light-weight core material. The length of time an uncatalyzed polyester remains workable while stored in a tightly sealed container. The first layer of laminate next to the gelcoat. A process in which glass fibers, catalyzed resin and catalyst are simultaneously deposited in a mold.