Patent ID: 6176964
Filing Date: 2001-01-23
Classification: G10K,Y10T

Abstract:
A method for fabricating an acoustic liner for sound absorption, the method comprising:a) priming opposing sides of a honeycomb core structure by applying an epoxy adhesive primer to each side and curing said primer;b) applying a B-stage cured adhesive on exposed end surfaces of the core structure, placing a mesh structure on that side of the core structure against said adhesive and applying a supported film adhesive to the opposite side of the core structure to which a backface sheet is applied and heating the resultant product for a time sufficient to cause adhesive-cured bonding of the backface sheet and the mesh structure to the core structure;c) priming a perforated sheet by applying an epoxy primer on one side thereof, curing said primer, and applying an epoxy adhesive on said side and thereafter B-stage curing said epoxy adhesive; andd) placing said one side of the perforated sheet on the mesh structure and heating the resultant product for a time sufficient to cause adhesive-cured bonding of the perforated sheet to the mesh structure.