| 摘要 |
Apparatus for producing a corrugated member from sheet, for example, plastic preimpregnated fabric, molds each corrugation individually with a plurality of bars one of which clamps an existing corrugation in place and one or more others form new adjacent corrugations. An indexing means then advances the mold and sheet along with the bars so that subsequent relief of the bars from the mold and their retraction to their original location, positions the bars for producing consecutive corrugations in the mold.
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