Michem® Flex Barrier 5780

Brand Family Overview

Ecrovin® LV dispersions are versatile polymer binders with exceptional wet scrub resistance in low VOC interior matte paints that exhibit excellent weather resistance performance in exterior applications.

See more Ecrovin LV products.


A water-based topcoat that provides a clear protective coating when used in BOPET/AlOx structures.


Protective coating for AlOx coated PET films

Performance Attributes

This product is used in many applications including the following:

ApplicationProperties Imparted
Functional Coatingsbarrier

See more products recommended for Functional Coatings.
Physical Properties

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

AppearanceClear yellowish
pH5.5 - 8.5
Shelf Life (mo) 12
Percent Non-Volatile32.5 - 33.5
Brookfield Viscosity (cps, mPa·s) 0 - 500
Spindle Number2

Site of Manufacture (and Product Code)

CIN (MFB5780)
AUB (MFB5780.E)
SNG (MFB5780.S)

Application Data

Michem® Flex Barrier 5780 is designed to be applied onto AlOx coatings produced on Bobst supplied vacuum platforms on BOPET substrates. A thin, dried coating is transparent, contributes to AlOx protection and allows further processing of BOPET/AlOX film. Properly coated and dried films are not expected to exhibit blocking to the backside. Suggested coat weight is 0.4 – 0.8 dry gsm. It should be diluted to 15-20% solids with soft water and dried thoroughly after application. If needed to adjust coat weight and processability, it is possible to dilute further with soft water.