초록 ▼

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

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.

대표청구항 ▼

A method of manufacturing a non-metallic cellular structure having a perforated septum, comprising the steps of providing a unitary non-metallic cellular structure having cells and a septum dividing open opposite edge surfaces of said cells; covering one of said open opposite edge surfaces of said c

A method of manufacturing a non-metallic cellular structure having a perforated septum, comprising the steps of providing a unitary non-metallic cellular structure having cells and a septum dividing open opposite edge surfaces of said cells; covering one of said open opposite edge surfaces of said cells with at least one type of particulate material capable of absorbing the power and reflecting the heat of a laser beam; and directing a plurality of spaced laser beams toward said septum and said cells having the covered open edges for perforating said septum with a plurality of spaced holes corresponding to said spaced laser beams.