Method of manufacturing a non-metallic core having a...

Details Method of manufacturing a non-metallic core having a... Method of manufacturing a non-metallic core having a...

B - Operations, Transporting

29

D

154/143, 327/1.6

B29D 99/00 (2010.01) B23K 26/00 (2006.01) B23K 26/18 (2006.01) B32B 3/12 (2006.01) E04B 1/84 (2006.01) E04B 1/74 (2006.01)

Patent

CA 1315352

ABSTRACT OF THE DISCLOSURE A method of manufacturing a non metallic honeycomb having a perforated septum embedded therein in a plane extending perpendicularly to cell walls of the honeycomb, the cell walls of the honeycomb each having discontinuous opposite outer edge surfaces, including the steps of protecting the cell walls with a protectant mixture applied to one of the outer edge surfaces; and laser drilling the septum with a plurality of laser beams originating from a point exterior to the cell walls opposite the covered edge surface in a direction parallel to said cell walls and perpendicular to the plane of the septum, the protectant mixture covering an area of the outer edge surface sufficient to prevent damage to the cell walls.

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