SURFACE TREATMENT OF SUBSTRATE OR PAPER/PAPERBOARD PRODUCTS USING OPTICAL BRIGHTENING AGENTS
摘要
The present invention relates to a process for applying optical brightening agent (OBA) to a sheet of paper or paperboard substrate. The process comprises the step of spraying an aqueous composition comprising an optical brightening agent onto at least one surface of a sized paperboard substrate to form a treated paperboard substrate. The treated paperboard substrate includes a layer of OBA on at least one surface of the paper or paperboard substrate in which the brightness of the treated paper or paperboard substrate is greater than the sized paper or paperboard substrate before treating thereof.
申请公布号
WO2007143186(A2)
申请公布日期
2007.12.13
申请号
WO2007US13118
申请日期
2007.06.01
申请人
INTERNATIONAL PAPER COMPANY;SKAGGS, BENNY, J.;BOVEE, MATT