Fiberglass reinforced plastic products having increased weatherability, system and method
View Patent ↗Climbing products containing rails decorated using veil products colored, patterned, painted or in combination with marking methods such as company names and logos and resin formulation designed to withstand exposure to UV radiation with minimal change in appearance which create specific appearances for applications, enhance weathering performance, and facilitate processing efficiency. A combination of a filler free resin or resin with filler and coated veil systems to create a synergistic weather resistance surface with self-contained color, pattern, picture, logo or combination of said same for climbing products. A system for producing components at a rate of greater than 5 ft/min. Various methods, system, a ladder rail.
1. A pultrusion system for producing a ladder rail, the system comprising:
a prewetting die wetting an unimpregnated middle mat layer with prewetting resin comprising filler;
a former compressing a seven-layer laminate of successively stacked unwet, unimpregnated top and bottom roving, mat, and veil layers onto the wet middle mat layer so that the prewetting resin fully saturates each of the top of bottom roving layers and the middle mat layer;
an impregnator compacting the compressed laminate while wetting only the top and bottom mat and veil layers with top coat resin; and
a curing die forming the ladder rail at a rate of greater than 5 ft/min by curing the compacted laminate.
2. The system of claim 1 further comprising a means for cutting the rail.
3. The system of claim 1 wherein the rail maintains a delta E of less than 20 with a 60 degree gloss, as measured by a hunter gloss meter, of greater than 70 after 1000 hours of ASTM G154 cycle 4 irradiation in a QUV accelerated weathering machine.
4. The system of claim 1 wherein said rate is from 5 ft/min to 9 ft/min.
5. The system of claim 1 wherein the former converts the laminate from a flat cross-section to a C-shaped cross-section.
6. The system of claim 1 further comprising two horizontal and vertical positioners, the first of which stacks the wet middle mat layer with the top and bottom roving and mat layers and the second of which stacks the top and bottom veil layers over the stacked top and bottom mat layers.
7. The system of claim 1 wherein the prewetting resin is selected from the group consisting of polyester, acrylic, epoxy, urethane, acrylate, and combinations thereof.
8. The system of claim 1 wherein the filler includes clay and CaCO 3 .
9. The system of claim 1 wherein the top and bottom veil layers are composed of a material selected from the group consisting of glass, polyester, paper, jute, and other dispersed fiber systems.
10. The system of claim 1 wherein the top and bottom veil layers are dyed, printed, pigmented, and/or transfer coated.