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:
May. 29, 2001
Filed:
Jul. 22, 1998
Raymond C. Simmons, Jr., Chapel Hill, NC (US);
W. Lamar Brown, Ringgold, GA (US);
Other;
Abstract
The present invention relates to a method of applying adhesive to corrugating media to produce corrugated materials by foaming the adhesive with air prior to application to the flute tips of the corrugating media. The foamed adhesive requires less precise control of the applicator rollers, and remains in place on the flute tips, rather than migrating into the flute valleys. As a result, the same volume of adhesive can be used with decreased solids content, decreasing overall adhesive cost and increasing corrugator productivity. In addition, because of the more precise placement of the adhesive on the tips of the flutes, a stronger, higher quality board can be produced. The adhesive can be starch-based, and can be foamed by a variety of methods, such as in existing pin-rotor stator containing foaming machine used for foaming latices.