Method and apparatus for producing expandable honeycomb material

Abstract From the Canadian patent

A process and apparatus for fabricating expandable honeycomb materials disclosed. The continuous length of material is folded opposite side portions thereof into a generally flat tubular form having upper lower layers. Adhesive is then applied along the length of the continuous material by first heating the material applying the adhesive, in a liquid state to the heated material and then cooling the, material to solidify the adhesive. The folded tubular material with solified adhesive lines thereon is then wound about a rack in such a manner that the tubular material is deposited in a plurality of continuous layers one on another with the lines of adhesive being disposed between adjacent …