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1. (WO2018067334) METHOD AND SYSTEM FOR MAKING LIGHT-BLOCKING ARTICLES

Pub. No.:    WO/2018/067334    International Application No.:    PCT/US2017/053163
Publication Date: Fri Apr 13 01:59:59 CEST 2018 International Filing Date: Tue Sep 26 01:59:59 CEST 2017
IPC: C08J 9/00
D06N 3/00
C09D 5/32
C08J 9/30
D06N 3/04
Applicants: EASTMAN KODAK COMPANY
Inventors: NAIR, Mridula
SEDITA, Joseph, Salvatore
BRICK, Mary, Christine
Title: METHOD AND SYSTEM FOR MAKING LIGHT-BLOCKING ARTICLES
Abstract:
A foamed, opacifying element having a target light blocking value (LBVT) and a target porous substrate is prepared by determining the light blocking value (LBVs) of the target porous substrate; calculating the LBVT-S difference; choosing a foamable aqueous composition; determining a dry coating weight for the chosen foamable aqueous composition (when foamed); and using the dry coating weight to form the single dry opacifying layer as the only layer disposed on the target porous substrate, such that the single dry opacifying layer has light blocking value that is equal to LBVT-S, ± 10%. The chosen foamable aqueous composition comprises the essential components (a) through (e) described herein. The desired foamable aqueous composition can be chosen from a set of similar compositions to achieve the desired LBVT with the noted target porous substrate using suitable mathematical formula relating dry coating weight to light blocking value and a suitable data processor.