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:
Feb. 03, 1976
Filed:
May. 29, 1973
Applicant:
Inventors:
James A Lock, Monroe, NY (US);
Leroy C Hofmann, Saddle River, NJ (US);
Chester P Kulesza, Statesville, NC (US);
Assignee:
International Paper Company, New York, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B31F / ;
U.S. Cl.
CPC ...
156205 ; 156210 ; 427391 ; 428530 ;
Abstract
An efficient, inexpensive, in-line process is provided for producing additive-impregnated corrugated board, such as those having excellent rigid-when-wet and rigid-when-humid strengths. The process comprises applying an additive, such as water- and moisture-resistant resin, flame retardant, fire proofing agent, fungicide, mold-inhibitor, insecticide, or the like, in the form of a collapsible foam of a dispersion or solution of the additive to the corrugated medium, and desirably the liners, at the time the corrugated board is being formed.