| 摘要 |
2128786 9316348 PCTABS00025 The system is for use on outdoor firing ranges. Target cards bearing the printed targets are secured to a 4 ft. square panel made of extruded fluted plastic twin-walled polypropylene sheet. The sheet is formed with built-in curvature, which is sufficient to render the target panel rigid, even though the material is thin enough that bullets can pass through without punching-out. Because of the curvature, no frame is required to keep the panel rigid. Scoring rings are printed on the face of the panel, together with a centering device which comprises markings that allow an attendant to align fresh target cards with the scoring rings. Two or three plies of fluted sheet may be welded/glued face to face, for larger targets. Posts or legs for the target panel are also made from extruded fluted plastic sheet. The posts are collapsible flat for storage, having a foldable box component and a foldable filler. The curvature of the target panel may be held in place temporarily for setting-up by straps between the posts. Heater wires may be inserted into the flutes.
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