Q - Envimak PET


TECHNICAL DATA SHEET


1. Classification : 

Toluene-free laminating inks for reverse gravure printing – solvent base


2. Name : Q - Envimak PET


3. Features and Uses:

- Q - Envimak PET without toluene in the formulation, the inks give the safe and friendly characteristics to human health as well as the environment
- Q - Envimak PET is a type of gravure laminating ink system, was applied for surface treated PET film (with surface tension more than 42 dyne/cm) or treated PA (nylon) film (with surface tension more than 50 dyne/cm)
- Q - Envimak PET supports various complex laminating processes like drying laminating, extrusion laminating. Both one component and two component inks can be applied.
- Excellent adhesion on surface of film and surface of laminating layer.
- 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 : Poly Urethane (PU)
- Pigment : Organic/ Inorganic pigment
- Additive : Synthetic wax
- Solvent : Methyl Ethyl Ketone (MEK)/ Isopropanol (IPA)/ Ethyl Acetate (EA)


5. Applications:

 
Compositions
Printed film
OPP
PET
PA(Nylon)
Onecomponent
 
**
 
Two component
*
***
***

Remark:
* : applied for general purposes, with 1.5% hardener in total fresh ink

** : applied for normal purposes (dry food, snack food), no hardener

*** : applied for special purposes (retort, boiling, frozen), with 1.5% hardener in total fresh ink


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
16
35÷ 65
B
C
A
A
Red
R106
16
35÷ 65
B
C
A
A
Red
R115
16
55÷ 100
A
B
A
A
Orange
O307B
16
30÷ 60
B
C
A
A
Green
Gr401
16
30÷ 60
AA
A
A
A
Blue
B301
16
30÷ 60
A
B
A
A
Violet
V703
16
30÷ 60
A
B
A
A
Black
BL501
16
35÷ 65
AA
AA
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:



 Solid : MEK / EA / IPA / MP = 5 / 3 / 1 / 1

 Halftone : MEK / EA / BA / IPA / MP = 5 / 1 / 2 / 1 / 1

Note: EA: Ethyl Acetate, BA: Butyl Acetate MEK: Methyl Ethyl Ketone, IPA: Isopropanol, 

MP: Methyl proxitol





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 ink agglomerate. Only mix 10 – 30 % previously used inks into fresh 

inks and sieve carefully by filter screen 100 µm or metal screen 120 meshes.

- 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.



Hardener usage:

For special purposes (retort, boiling, frozen, etc …) in PET film printing and for all case in

OPP and PA (nylon) film printing, we recommend adding a hardener into the fresh ink as 

follows the table:



Conditions
Content (wt / wt)
Note
 
Humidity<70%andthere

is noIPAinthethinner
 
1.5–2.0%ofthefreshink
 
RefertoItem 7above
 
Humidity>70%andthere

is noIPAinthethinner
 
 
2.0–3.0%ofthefreshink
 
 
UsingIPAinthethinner
 
>2.0%of thefreshink
 
Tobaseona IPAlevelused


 It should be storaging the two component inks in 25oC and using them in 24 hours after

 adding hardener.

 Keep the printed films in 24 hours before laminating.





9. Safety and storage information:


- The products contain flammable liquids. Thus, it’s necessary to keep a working area

 ventilating or install an 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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