| 摘要 |
A torsion box, useful for skis, snowboards or the like, has a constant cross section and a hollow interior. The torsion box is made from a plurality of plies and a resin matrix, at least some of the plies consisting of fibers disposed at an angle with respect to a longitudinal axis of the torsion box. The plies include fibers preferably selected from the group consisting of glass, carbon and Kevlar TM . Particularly, the fibers will be angled with respect to the longitudinal axis of the torsion box within a range of about 0 DEG to about 45 DEG . The torsion box may be made by a pultrusion process where the desired fibers are pulled through a resin bath, or injected with resin, and heated in a die, then cut to a desired length. The plies are arranged to impart a material imbalance to the torsion box so that, upon cooldown, the product exhibits a predetermined camber. When applied to skis, the torsion box and process according to the invention allow for ski manufacturing in a continuous, rather than batch, process.
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