DigiGuard® Plus 921

DigiGuard Plus Family Overview

DigiGuard® Plus strengtheners enhance the performance of compatible UV-curable overprint varnishes for HP Indigo digitally printed high-performance labels. These strengtheners provide improved mechanical durability with increased abrasion, scratch, chemical, water, and thermal resistance. Learn more about DigiGuard Plus »


An additive designed to improve the performance of HP-validated UV OPVs used in combination with Michelman's DigiPrime® priming solutions. It provides water and chemical resistance for high performance labels. This product can be used in combination with DigiGuard® Plus 920.

Performance Attributes

This product is used in many applications including the following:

ApplicationProperties Imparted
HP Indigo Solutionschemical resistance, water resistance, Substrate - film, Applicator - Indigo ILP station, OEM - Indigo ws6000, OEM - Indigo 8000

Physical Properties

AppearanceColorless to yellow
Percent Non-Volatile98.0% – 100.0%
Brookfield Viscosity Range15 – 25
Spindle Number1

These physical properties are typical but should not be considered specifications.

Additional Information

Description: UV OPV performance enhancer

Handling: Avoid contact with eyes, skin and clothing. Ensure adequate ventilation. Handle in accordance with good industrial hygiene and safety practice. Keep away from open flames, hot surfaces and sources of ignition.

Shelf Life: 12 Months

Technical Data Sheet: Click here to download a Technical Data Sheet PDF for DigiGuard® Plus 921

Site(s) of Manufacture (and Product Code):

Aubange, Belgium (DG921.E)