Sumikaflex 7400HQ

Type:

Ethylene-Vinyl acetate Copolymer Emulsion

Properties:

Sumikaflex 7400HQ is an emulsion which has an anticipatedgreat efficacy for the initial set time because of its solid % is74%, which is extremely high. Also, due to its highconcentration and low viscosity, it is available to give various
blending recipes and extend room of choice of additives.

Main
application:

Adhesives for all(Paper packaging, wood working)Inkjet papers

Physical properties:
Appearance

Milky whiteSolid(%)

70 – 74

Viscosity(mPa·s)

2000 – 6000pH
Ave. Particle size

4–7(µm)0.8

Density(g/ cm3)

1.09

MFT(ºC)

0Particle charge

Nonionic

Machine stability

GoodTg(ºC)

0Film strength(MPa)5.4

Film elongation

(%)

810

< Technical Information of Sumikaflex 7400HQ >1. Grade positioning[Standard type][High solid % type]

S-400HQ

S-460HQ

Solid%: 55%

Solid %: 60%

Protective colloid type

[Super high solid % type]Protective colloid typeS-467HQ

S-7400HQ

Solid %: 65%

Solid %: 74%

Special emulsifier typeSpecial emulsifier type2. Emulsion properties
S-7400HQAppearance

Milky white

Solid content(%)

72 –75

Viscosity(mPa·s)

2000 – 6000

pH

4–7

Ave. particle size

(µm)

0.8

Density(g/cm3)

1.09

MFT(ºC)

0Particle charge

Nonionic

Mechanical stability
Tg

Good(ºC)

0

3. Film properties(1) Film tensile strength
Item
Dry
Wet

S-7400HQ

S-467HQ

S-400HQ

Elongation（%）

810

790

550

Strength

5.4

5.8

12.7

Elongation（%）

730

840

600

Strength

2.7

2.0

3.3(MPa）(MPa）

Test method
Film thickness: 0.15 mm(Film forming condition and aging: 23ºC × 65%RH × 7 days)
Film shape: Dumbbell No.3

Dry film strength: 23ºC × 65%RH

Wet film strength: Dipped film in water for 24 hr at 23ºC, measured in wet
condition

Measurement speed: 500 mm/min(2) Film water-drop test

Whitening time (min)S-7400HQ

S-467HQ

S-400HQ

> 120

> 120

2Test method
Foam film (thickness is 0.15 mm) on the slide glass at room temperature. The
slide glass is on the 8 points Chinese character of newspaper. Measure the time
till that character can’t be read when puts one drop of water on the film.
(3) Water and alkali resistance of film
S-7400HQ

S-467HQ

S-400HQ

WaterElusion (%)

215resistance

Absorption (%)

371216Alkali

Elusion (%)

219resistance

Absorption (%)

151520

Test method
Thickness of film: 0.15 mm
Water resistance: Dipped film in water for 4 days at 23ºC
Alkali liquid of resistance: Dipped film in 1 N of NaOH for 4 days at 23ºC

(4) Relation with solid % and viscosity

Relation with solid % and viscosity

10000

Viscosity （mPa・s）

S-7400HQ
S-467HQ
S-400HQ

1000

100
50556065Solid（％）

707580(5) Filler miscibility
Miscibility of emulsion and calcium carbonate

1000000

Viscosity（mPa・s）

S-7400HQ
S-467HQ
S-400HQ

10000010000

1000506070Solid（%）

8090

4. Applications(1) Initial adhesive property
1) Quality paper to quality paper
Set time (sec)Coating: 40 g/m2

Coating: 90 g/m2

S-7400HQ5>

18S-467HQ

1223S-400HQ

1527

Apply emulsion on the quality paper (basis weight: 90 g/m2), glue together witha quality paper in a short time then immediately perform 180º de-lamination.
Measure the time until 100% paper broken occurs.

2) PET / Quality paper
Set time (sec)Coating: 40 g/m2
S-7400HQ

17S-467HQ

20S-400HQ

23

Apply emulsion on the PET using an applicator, glue together with a quality paper
in short time then immediately perform 180º de-lamination. Measure the time until
100% paper broken occurs.
(2) Application for the inkjet paper< Blending recipes >1

2

Micro powder silicate (20% water dispersion)

100

100S-7400HQ

400

Polyvinyl alcohol (10% aqueous)

040

Ink set additive (Sumirez resin 1001: solid 30%)2020

Total solid (%)

25.8

15.4

Coating mixture viscosity (mPa·s)

1320

300

15.4% concentration viscosity (mPa·s)

37300

< Coating method >Using general quality paper (basis weight: 80 g/m2, stekihit size: 30 sec), above
coating composition of A and B are coated on this base materials by using wire rod in
condition that each solid % when dried should be 6 g/m2 and 10g/m2. Furthermore, driedfor 2 min at 120ºC, applied 1 min at 110ºC. This recording material is printed anevaluation patterns by commercial inkjet printer.

< Test results >(1) Coating weight = 6 g/m2
Printing concentration [1]Water resistance

Bleeding

Method

MCYB

[2]

[3]

1

1.44

1.51

1.60

1.81

◎○＋2

1.41

1.46

1.66

1.79

△△

(2) Coating Weight =10 g/m2
Printing concentration [1]Surface

WaterWet

Bleeding

strengthresistance

Rub

[3]

[4]

[2]

[5]

Method

MCYB

1

1.39

1.43

1.51

1.77

△◎△◎

2

1.44

1.54

1.67

1.88○

△○○~△

[1] Printing concentration
The record samples are stood in temperature-controlled room in condition of
25ºC and 60Rh% for more than half a day, measured the printing concentrationby Macbeth concentration mater.
[2] Water resistanceDipping method ··· Dipped printed parts for 3 min. In 20ºC of water, picked up
the samples and air-dried, measured the color concentration.
Water drop test ··· One drop water on the printed part and air-dried. Measured
the bleeding by visual observation.
[3] Bleeding
Judge the recorded sample bleeding by visual observation using microscope
expanded of 40 double and 60 double.

[4] Surface strength
The record samples are stood in temperature-controlled room in condition of
25ºC and 60Rh% for more than half a day, peeled the surface of the coating
paper using commercial adhesion tape. Judge the surface strength from thedegree of the peeled pigment moved tape side by visual observation.
[5] Water resistance of white paper (Wet Rub method)
The record samples are stood in temperature-controlled room in condition of
25ºC and 60Rh% for more than half a day.
Place five drops of water on the surface of the coating paper by dropper, friction
coating paper for five times with right middle finger of abdominal area, moved
water on the black paper immediately. Stood until dried then judge the pigment
amount moved on the black paper.