Method of making a lineal structural member
AssigneeOwens-Corning Fiberglas Corporation
InventorsNeil A. Carter, Ronald R. Harris, Russell L. Ault
Life of this patent
Estimating the term…
Abstract
Core material of shaped glass fiber board is impregnated with resin in outer surface portions, the resin is cured, an additional resin casing is formed therearound, and the additional resin is cured. Glass strands may be included with the resin impregnation, and a continuous strand mat, a veil mat, and glass rovings may be included with the resin encasing.
Claims10
A method of making a lineal structural member comprising feeding a shaped, elongated, generally laminar, porous glass fiber core successively through a resin-impregnating die having an exposed inner peripheral resin-filled cavity of a larger dimension, in a direction of core movement, in a pair of opposed portions parallel to laminations of the core than in a pair of opposed portions perpendicular to laminations of the core, to impregnate a generally uniform thickness of resin into only outer surface portions of the core completely around its periphery while maintaining the interior porous, through a curing chamber wherein the resin impregnated into the outer surface portions thereof is cured, through a resin-encasing die wherein resin is injected under pressure to encase the resin-impregnated core, and through a curing die wherein the encasing resin is cured to form the structural member.
Dependencies are inferred from the claim text.