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. 30, 2007
Filed:
Dec. 12, 2002
Markus Gueggi, Marly, CH;
Markus Gueggi, Marly, CH;
Dow Global Technologies Inc., Midland, MI (US);
Abstract
A method and apparatus for curtain coating of a moved substrate, particularly for high-speed curtain coating of a continous paper web substrate, wherein a substrate () is moved below a hopper means (), provides one or more liquid coating materials in the form of a free-falling curtain () impinging the substrate at a dynamic wetting line. () Edge guide elements () are used for stabilizing the width and equalizing the flow speed of the coating curtain and allowing disturbance free provision of an auxiliary liquid () as well as practically compelte removal of the auxiliary liquid () wilst preventing the forming of solidification on the edge guides elements. An auxiliary liquid is injected () essentially parallel to the flow direction of the coating film at an edge of the coating film wilst moving along a slide of said hopper arrangement.