초록 ▼

A method for high speed continuous production of reinforced plastic sheets and reinforced plastic sheet laminate structures which may have widths ranging from relatively narrow to very wide. One or more layers of resin impregnated, fiber-containing, reinforced plastic composite material is brought i

A method for high speed continuous production of reinforced plastic sheets and reinforced plastic sheet laminate structures which may have widths ranging from relatively narrow to very wide. One or more layers of resin impregnated, fiber-containing, reinforced plastic composite material is brought into contact with surfaces of one or more endwise abutted relatively flat panels. The panel or panels are then passed between a pair of continuously rotating belts. A pressurized air body is formed in a plenum chamber which faces the interiorly presented surface of at least one of the belts and which air body is between the housing forming the plenum chamber and the interior surface of the belt. Preferably, a similar housing creates a pressurized air body between such similar housing and the other of the belts. In this way, the pressurized body of air forces the belts into intimate contact with the layers forming the reinforced plastic laminate structure. The body of air is generally at a uniform pressure in the area between the belts and associated housings. In like manner, a single sheet of resin impregnated fiber-containing material may be passed between the belts where the resin is cured during the application of pressure to form a rigid single ply sheet structure. The method may use an augmented cure so that a cure of the resin is initiated in a precuring mechanism, and the reaction proceeds to a final cure while the layer or layers pass between the belts. The belts may be heated so as to facilitate the curing of the resin matrix impregnated in the layer or layers containing the fiber-reinforcing material.

대표청구항 ▼

A method of producing a reinforced plastic composite panel segments on a continuous basis comprising: (a) endwise abutting a plurality of rigid panels in a generally common plane and where each of the rigid panels has a pair of spaced apart first sides and a pair of spaced apart second sides and pai

A method of producing a reinforced plastic composite panel segments on a continuous basis comprising: (a) endwise abutting a plurality of rigid panels in a generally common plane and where each of the rigid panels has a pair of spaced apart first sides and a pair of spaced apart second sides and pair of relatively flat opposite surfaces, such that the first sides are generally aligned on opposite sides of the panels and the second side of the panels are endwise abutted and the relatively flat opposite surfaces of said panels are generally coplanar, (b) moving said endwise abutted panels successively and while in endwise abutted engagement through a first application station and a second application station, (c) wrapping a plurality of first strands of fiber reinforcing material at said first application station in closely spaced relationship to one another about and around said pair of spaced apart first sides and across said relatively flat opposite surfaces of said endwise abutted panels, (d) applying a plurality of second strands of fiber reinforcing material at said second application station in closely spaced relationship to each of the opposite flat surfaces of said endwise abutted panels so that the second strands extend beyond the spaced apart second sides of some of said panels, said plurality of first strands and plurality of second strands having been impregnated with a curable binder, (e) curing the binder and bonding the binder impregnated first and second strands to one another to effect a woven strand sheet extending for the entire surface area of a plurality of the endwise abutted panels and to bond same to said panels to form a succession of endwise abutted panels with woven strand sheets bonded to opposite surfaces thereof, and (f) severing the endwise abutted panels at desired positions lengthwise thereof to form panel segments of the desired length comprised of a portion of a rigid panel and formed woven strand sheets on the opposite surfaces thereof.