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:
Jun. 28, 2022
Filed:
Jan. 28, 2019
Dow Global Technologies Llc, Midland, MI (US);
Regents of the University of Minnesota, Minneapolis, MN (US);
Rohm and Haas Company, Collegeville, PA (US);
Alireza Mohammad Karim, Minneapolis, MN (US);
Saswati Pujari, Collegeville, PA (US);
Wieslaw J. Suszynski, Maple Plain, MN (US);
Lorraine F. Francis, Minnetonka, MN (US);
Marcio S. Carvalho, Minneapolis, MN (US);
Vinita Yadav, Royersford, PA (US);
DOW GLOBAL TECHNOLOGIES LLC, Midland, MI (US);
REGENTS OF THE UNIVERSITY OF MINNESOTA, Minneapolis, MN (US);
ROHM AND HAAS COMPANY, Collegeville, PA (US);
Abstract
Methods of curtain coating substrates are disclosed. In some embodiments, the methods include applying two or more liquid layers simultaneously to a substrate, wherein the multiple layers include a bottom liquid layer comprising a shear thinning liquid, and another liquid layer comprising a viscoelastic liquid. In some embodiments, the disclosed methods include formulating a bottom layer liquid comprising a shear thinning liquid, formulating another layer liquid comprising a viscoelastic liquid, pumping the bottom layer liquid and the other layer liquid through coating dies simultaneously and onto a moving substrate such that the bottom layer liquid impinges on the substrate thereby forming a bottom layer, and the other layer liquid forms another liquid layer above the bottom liquid layer. The inclusion of a bottom liquid layer comprising a shear thinning liquid and other layer comprising a viscoelastic liquid provides for enlargement of the curtain coating window.