| 摘要 |
PURPOSE:To propose the manufacture of a honeycomb core made of plastics, which can be manufactured continuously, at first, with high productivity and low cost, which is, secondly, not limited even by size in the longitudinal direction and in which, thirdly, the cell shape and the accuracy thereof are improved. CONSTITUTION:A beltlike plastic material D is heated and pressed while being passed between corrugating rollers 8, 8 or pressed between driving rollers while being passed between corrugating belts after heating, thus continuously molding a corrugated board G. The corrugated boards G are coated successively with adhesives H and superposed, thus manufacturing a honeycomb core J made of plastics. The corrugated board G is molded, at first, continuously and each process is not parted first, secondly, length in the longitudinal direction of the corrugated board G is not limited, and, thirdly, pressing is conducted concentrically at one point to the plastic material D and is not performed extending over the whole surface at a time. |
