Q - Chromax OPPx

TECHNICAL DATA SHEET


1. Classification : 

Laminating inks for reverse gravure printing - solvent based inks.


2. Name : Q - Chromax OPPx


3. Features and Uses:

- Q - Chromax OPP/ PP is a type of gravure laminating ink system, was applied for treated OPP, BOPP film with surface tension more than 38 dyne/cm
- Q - Chromax OPP/ PP supports various complex laminating processes like drying laminating, extrusion laminating to give ideal laminating strength for PP resin.
- Good in chemical resistance
- Leave less residual solvent
- Good ink transfer and printability
- Good static resistance
- Heavy metal contents in the ink meet ASTM F963-96a 4.3.5 & 8.3 and EN 71-3:1994 testing standards


4. Main Compositions:

- Resin : Chlorinated Polypropylene (CPP)
- Pigment : Organic/ Inorganic pigment
- Additive : Synthetic wax
- Solvent : Toluene / MEK / Isopropanol (IPA)



6. Physical Properties:


 
 
Colour
 
 
Code
 
Net weight (kg)
 
Viscosity
(sec)
Light fastness
 
Water
Resistance
 
Acid& Alkali Resistance
 
Full
 
Tint
White
W001
20
30- 60
AA
AA
A
A
Yellow
Y203
17
35- 65
B
C
A
A
Red
R106
17
35- 65
B
C
A
A
Red
R102
17
35- 65
B
C
A
A
Orange
O307B
17
30- 60
B
C
A
A
Green
Gr401
17
30- 60
AA
A
A
A
Blue
B301
17
35- 65
AA
A
A
A
Violet
V703
17
35- 65
A
B
A
A
Black
BL501
17
35- 65
AA
A
A
A
Medium
Me
17
20÷ 40
 
 
 
 

Remark:

- Fineness: < 10 microns
- Viscosity: measured by Zahn No.3 Jis
- Acid resistance:
Dipping into solutions of 3% hydrochloric acid and 7% acetic acid; slightly colouring of solution, but no change in shade of ink film after 30 mins.
- Alkali resistance:
Same result as acid test after 30 mins. Dipping into solution of 2% NaOH at room temperature.
- Water resistance:

Same result as acid test after 30 mins. Dipping into water at room temperature.

A : No change
B : Slightly colouring of solution but no change of shade of ink film
C : Slightly fading of shade of ink film and a little colouring of the solution
D : Fading pretty much

- Light fastness:

Tester: Sun Tester 575

Distance from light source to substance: 300 mm

 Full: high concentration (colour ink : white ink = 1: 0)
 Tint: low concentration (colour ink : white ink = 1:10)

The degree of resistance:

AA : No fading after 60 hours
A : Fading after 35 - 60 hours
B : Fading after 15 - 35 hours
C : Slightly fading after 15 hours
D : Fading much within 15 hours



7. Thinner:

 
 
SpeedMachine
Mixedsolvent
 
%Toluene
 
%EA
 
%MEK
£150m/min
80
 
20
150–200m/min
70
30
 
200–300m/min
50
20
30

Note: EA : Ethyl Acetate, MEK : Methyl Ethyl Ketone


8. Attention for Users:

- Stir well before using.
- The fineness of previously used inks should be tested before using because a long-term storage can cause an ink agglomerate. Only mix 10-30 % previously used inks into fresh inks and sieve carefully by filter screen 100 µm or metal screen 120 mesh.
- Using the ink supply system together filter screen equipment and circulating pump to prevent inks from skinning, foreign matters as well as to stabilize colour strength.
- For the printing with less ink consumption and small printing plate, moisture can be easily introduced due to long contact with air, leading to thickening and filling-in. To prevent these phenomena, slow drying solvent should be used in so far as possible, and humidity of working areas should be controlled at 55 – 65%.
- Ensuring a good blocking resistance, it’s necessary to control adequate drying rate.

Medium usage:

For printing, medium is added into inks to decrease colour strength, depends on the cell- deepness of cylinders. Generally, 10 – 15% medium should be mixed into fresh inks. In special cases, the medium content used is a higher ratio. We recommend the medium ratio as follows:
 Medium rate ≤ 10 – 15% : using non-additives medium.
 Medium rate > 15% : using medium with additives.


9. Safety and storage information:

- The products contain flammable liquids. Thus, it’s necessary to keep a working area ventilating or install a exhaust system of ventilation. Keep away from heat, spark/flame, and static electricity.
- Storage and handling at 15-25oC.
- Avoid contact with skin and eyes.
- Shelf life: 6 months after date of manufacture (in condition 15-25oC).

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