| abstract |
(57) [Summary] The process steps for the continuous manufacture of non-expanded honeycomb cores from non-pre-corrugated webs include progressively corrugating and fixing the web, which involves several sets of honeycomb cell half-cell heights in each pass. By a corrugated / fixed unit, including corrugations across the bed unit containing the former bars (1 and 4) and elongated teeth for fixation. The plurality of nodal antinodes of the top half cell layer to be formed are fixed while the new waveform and associated nodal antinodes are formed. This process allows a longer fixation time, results in a small temperature difference between the fixing teeth and the fixed node-antinode dome, and furthermore makes the corrugating and fixing temperatures essentially independent of each other. This process step can be realized by using a corrugated / fixed unit with a running belt that includes individually or selectively heatable corrugated and fixed teeth. This process and equipment enables the production of honeycombs at high production rates even from thin thermoplastic web materials. In a preferred realization, the tooth is a radiant energy transmitting tooth associated with a radiant energy source that is turned back and directed towards the nodal-node antinode contact base. |