Solvent based gravure inks for surface printing, non laminating
2. Name : Q-Surf Paper
3. Features and Uses:
- MulT Surf N is front surface printing ink for many paper (Ford, Couche’, Ivory …), used for fast food, milk packages, etc
- Good slipping resistance
- Excellent adhesion on surface of paper
- 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 : Nitro Cellulose (NC)
- Pigment : Organic/ Inorganic pigment
- Additive : Synthetic wax
- Solvent : Toluene / MEK / EA
5. Physical Properties:
Colour
|
Code
|
Net weight (kg)
|
Viscosity
(sec)
|
Light fastness
|
Water
Resistance
|
Acid& Alkali
Resistance
|
Full
|
Tint
|
White
|
W001
|
20
|
25÷ 45
|
AA
|
AA
|
A
|
A
|
Yellow
|
Y203
|
16
|
25÷ 45
|
B
|
C
|
A
|
A
|
Red
|
R106
|
17
|
25÷ 45
|
B
|
C
|
A
|
A
|
Orange
|
O307B
|
17
|
25÷ 45
|
B
|
C
|
A
|
A
|
Green
|
Gr401
|
17
|
25÷ 45
|
AA
|
A
|
A
|
A
|
Blue
|
B301
|
17
|
25÷ 45
|
A
|
B
|
A
|
A
|
Violet
|
V703
|
17
|
25÷ 45
|
A
|
B
|
A
|
A
|
Black
|
BL501
|
17
|
25÷ 45
|
AA
|
AA
|
A
|
A
|
Medium
|
Me
|
17
|
20÷ 40
|
|
|
|
|
Overprint
Varnish
|
OPV
|
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
6. Thinner:
Toluene / EA / MEK / IPA = 4 / 4 / 3 / 1
Note: EA : Ethyl Acetate, MEK : Methyl Ethyl Ketone, IPA: Isopropanol
7. 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.
8. 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).