Hugo E Spahn

US Patent:

44289936, Jan 31, 1984

Filed:

May 11, 1982

Appl. No.:

6/377037

Inventors:

Henri A. Kohn - Northvale NJ
Hugo Spahn - Wappingers Falls NY

Assignee:

Baltek Corporation - Northvale NJ

International Classification:

B32B 312

US Classification:

428117

Abstract:

A structural sandwich laminate constituted by thin skins, such as aluminum or fiber-reinforced plastic sheets bonded to the faces of a core formed by an array of wood strips having a periodic wave formation. The wavy strips in the array are out of phase with each other and are bonded together at their contiguous troughs and peaks to define an open-celled expanded wood structure whereby the laminate, though light-weight, has high strength.