The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 23, 1997
Filed:
May. 21, 1996
Fritz Huebner, Holland, MI (US);
Gerard J Schoeb, Holland, MI (US);
Plascore, Inc., Zeeland, MI (US);
Abstract
Methods and apparatus for forming honeycomb structure from a plurality of substrate layers. The layers are bonded together by spaced, parallel, solid node strips of thermoplastic material pressed and heated above the softening temperature to bond to the substrate surfaces and form a block. After cooling, the block is expanded into a honeycomb structure. Alternatively, the solid node strips can be placed on the spaced raised crests of corrugated layers of substrate, and successive layers bonded together by pressure and sufficient heat between the crests of one layer and the corresponding depression of the successive layer, to elevate the node strips above the softening temperature. Several alternative methods and apparatuses for achieving the result are disclosed.