Michem® Flex Barrier 5780

Brand Family Overview

Michem® Coat water-based coatings are selected primarily for grease and oil resistance. Other benefits include water resistance, release, coldset gluability, hot melt gluability, recyclability, and compliance with specific food contact regulations.

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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

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Physical Properties

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

AppearanceClear yellowish
pH5.5 - 8.5
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.