公开(公告)号：US20130171462A1

公开(公告)日：2013-07-04

申请号：US13775294

申请日：2013-02-25

Applicant: International Paper Company

Inventor： BENNY J. SKAGGS ,  MATT BOVEE

IPC: D21H23/50 ,  B32B9/06

CPC classification number: D21H23/50 ,  B32B9/06 ,  D21H19/12 ,  D21H19/824 ,  D21H21/30 ,  Y10T428/31975 ,  Y10T428/31982 ,  Y10T428/31993

Abstract: 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.

Abstract translation: 本发明涉及一种将光学增亮剂（OBA）施加到一张纸或纸板基材上的方法。 该方法包括将包含荧光增白剂的水性组合物喷涂在尺寸的纸板基材的至少一个表面上以形成经处理的纸板基材的步骤。 经处理的纸板基材在纸或纸板基材的至少一个表面上包括一层OBA，其中经处理的纸或纸板基材的处理之前的处理纸或纸板基材的亮度大于尺寸的纸或纸板基材。