Application example 3
Solution coating film
By coating substrate with a Nichigo G-Polymer™ aqueous solution, high gas barrier
performance can be achieved.
| Type |
Grade |
Viscosity 1)
(mPa•s) |
Degree of
polymerization |
Saponification
value (mol%) |
Melting point 2)
(℃) |
| Standard |
BVE8049Q* |
4.5 |
450 |
≧99.0 |
190 |
| Low viscosity |
AZF8035Q* |
3.0 |
300 |
≧98.0 |
172 |
Above numbers are for reference, not guaranteed
1) : 4% aqueous solution at 20℃
2) :
Measured by DSC
* ; High purified type (for food package application)
・ Solvent: water or water/alcohol (e.g. water/ethanol with ethanol 50wt% or less)
・ Solution
concentration: 5-15% (according to coating equipment, desired coat thickness and line speed)
・
Drying temperature: 70-120℃
In order to assure adhesion, we recommend the use of
substrate film that has undergone corona treatment.
In addition, use of an anchor coating agent
is also effective to enhance wetting and adhesion.
Nichigo G-Polymer™ BVE8049Q
23℃ PET/resin = 25/3μ
Wetting agent is recommendable for improvement on the wettability of Nichigo G-Polymer™ water
solution on anchor coating agent layer.
Wetting agent : Olfine EXP-4123 (produced by
Nisshin Chemical)
Additive amount : 0.05-0.1wt% (against solution)
By addition of
wetting agent, Nichigo G-Polymer™ solution can be coated on hydrophobic anchor coat agent
layer.
【Anchor coating agents (Hydrophilicity)】
【Anchor coating agents (Hydrophobicity)】
By addition of wetting agent, Nichigo G-Polymer™
solution can be coated on hydrophobic anchor coat agent layer.
【Effect of wetting agent】
Surface condition will dramatically improve by using wetting agent
Nichigo G-Polymer™ BVE8049Q
