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:
Jan. 03, 1995
Filed:
Feb. 10, 1993
Applicant:
Inventors:
Dean R Johnson, Columbia, MD (US);
Hans W Maurer, Highland, MD (US);
Assignee:
Westvaco Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B05D / ; B05D / ;
U.S. Cl.
CPC ...
427211 ; 427361 ; 427363 ; 427364 ; 427365 ; 427366 ; 427428 ; 162206 ; 162207 ;
Abstract
The method comprises the application of a liquid film to a paper or paperboard rawstock web in a controlled and uniform manner to achieve a moisture gradient in the Z-direction thickness of the web to a depth of less than about one-half of the web thickness, and then pressing the treated web in at least one nip of a calender device before drying the web. The liquid application plasticizes only the surface fibers of the web so that the paper fibers at or near the surface become deformed and bonded under pressure to achieve a substantially irreversible smoothness upon being rewetted in a coating application or the like.