Mexichem Specialty Resins, Inc.
TECHNICAL ASSISTANCE BRIEF
NUMBER:
013
ROTARY SCREEN COATING WITH GEON™ RESINS
Rotary screen-printing is a method for coating plastisol on fabric, paper, and non-wovens. In rotary
screening, the doctor blade is mounted in the interior of a cylindrical screen, through which the
plastisol is extruded onto the substrate. The lack of stress on the substrate, the degree of control
over penetration into the subsrate, the ability to coat on an uneven surface, and the possibilities for
making discontinuous coatings makes this a unique application technique.
A wide variety of Geon Vinyl resins are used in this technology. Lo-Sope resins, which have the
required rheological behavior are available in a range of molecular weights. Foam printing can be
done on the rotary screen. Geon Vinyl foam resins are available in different molecular weights, and
with rheologies suitable for thin or thick coatings.
Typical applications for rotary screen coating with plastisols are:
-
Thin coating on paper
"Spanished" artificial leather
Fabric coating
Printed foam
Starting point formulations and operating conditions are as follows:
.Thin Coating on Paper
Formulation:
Item
Level (phr)
Geon™ 179
Geon™ 215
DINP
TXIB
Paraplex G62
Thermal Stabilizer
Atomite
TiO2
Loxiol G10
Deplastol
70
30
55
10
5
2.5
20
15
0.4
1.5
209.4
Brookfield RVF Viscosity, 1 Day, (cps)
Severs Viscosity
2 RPM
20 RPM
15,300
6,800
Mexichem Specialty Resins, Inc.
Pressure (psi)
Efflux (g)
Shear Rate (sec.1 )
Viscosity (cps)
10
12.8
290
1900
30
36.8
820
1980
50
62.2
1390
1950
70
87.9
1960
1930
90
117.2
2600
1860
Conditions:
Screen:
Standard Stork 20 Mesh
Blade Length:
28mm
Blade Pressure Setting:
5
Substrate:
Swift Strip J1632
Line Speed (ft/min)
28
28
49
84
Whisper Blade Used
No
Yes
Yes
Yes
Film Thickness (mils)
2.0
2.0
2.0
1.7
2.54
2.59
2.94
2.39
Coating Weight, Dry (oz/yd2)
2.
"Spanished" Artificial Leather
Formulation A was coated onto an embossed release paper at 14 ft/min using a blade length
of 25.4mm. A film thickness of 2.2mm resulted. Formulation B was then coated upon film A
at 14 ft/min. The combined thickness of the two coatings was 5.5 mil. A standard Stork 60mesh screen was used for both coatings.
Formulation A
Item
Geon™ 179
Geon™ 215
Palatinol 711P
TXIB
Paraplex G62
Thermal Stabilizer
Mapico Brown Powder #422
Harwick Black Paste 90PC03
Cab-O-Sil M-5
Mineral Spirits
Level (phr)
70
30
45
10
5
3
1
1
1
10
Mexichem Specialty Resins, Inc.
TOTAL:
176
Severs Efflux, initial (g/100 sec.):
0.1560 cm orifice, 95 psi
416
Brookfield RVF Viscosity, initial (cps)
2 RPM
53,200
20 RPM
10,300
Formulation B
Item
Geon™ 179
Geon™ 215
Palatinol 711P
TXIB
Paraplex G62
Thermal Stabilizer
TiO2 B123
Ruscoe Brown Paste 24475
Ruscoe Medium Chrome Yellow 17940-B
TOTAL:
Severs Efflux, initial (g/100 sec.):
0.1560 cm orifice, 95 psi
Level (phr)
70
30
45
10
5
3
10
10
10.4
193.4
176
Mexichem Specialty Resins, Inc.
3.
Fabric Coating
Formulation
Item
Level (phr)
Geon™ 179
Geon™ 215
Palatinol 711P
Paraplex G62
TXIB
Thermal Stabilizer
TiO2
Atomite
Cab-O-Sil M-5
70
30
70
3
10
2
10
30
1.5
TOTAL:
226.5
Brookfield RVF Viscosity, (cps)
2 RPM
38,800
20 RPM
8,560
Severs Viscosity
Pressure (psi)
Efflux (g)
Shear Rate (sec.1 )
Viscosity (cps)
10
26.3
590
920
30
95.2
2120
760
50
178
3870
680
70
267
5960
640
90
355
7920
620
Conditions:
Screen:
Stork 20 Mesh Penta
Blade Length:
25.4mm
Blade Pressure Setting:
3
Substrate:
50/50 Polyester/Cotton Scrim
Line Speed:
49 ft/min.
Dry Coating Weight:
2.6 oz/yd2
Mexichem Specialty Resins, Inc.
4.
Printable Foam
Formulation
Item
Level (phr)
Geon™ 180X5
Geon™ 215
Palatinol 711P
TXIB
Paraplex G62
TiO2
Celogen OT
AZ3990
Actafoam R-3
Cab-O-Sil M-5
Ruscoe Chrome Green Oxide #25763
70
30
65
10
5
10
0.5
1.5
3
1.5
2.6
TOTAL:
199.1
Brookfield RVF Viscosity, (cps)
Initial:
1 Day
2 RPM
29,600
2 RPM
20 RPM
6,130
20 RPM
Severs Viscosity
Pressure (psi)
38,600
8,780
Efflux (g)
Shear Rate (sec.1 )
Viscosity (cps)
10
16.4
367
1470
30
52.8
1180
1370
50
89.4
2000
1350
70
125.4
2800
1340
90
172.6
3860
1250
Conditions:
Screen:
Standard Stork 14 Mesh
Blade Length:
28mm
Blade Pressure Setting:
6
3-mil coating printed which foams to 8 mil when heated at 390F for two minutes.
Mexichem Specialty Resins, Inc.
Raw Material Sources
Geon™ 180X5
PVC Dispersion Resin
Mexichem Specialty Resins, Inc.
Geon™ 179
PVC Dispersion Resin
Mexichem Specialty Resins, Inc.
Geon™ 213
PVC Blending Resin
Mexichem Specialty Resins, Inc.
DINP
Plasticizer
Exxon
Palatinol 711P
Plasticizer
BASF
TXIB
Plasticizer
Eastman
Actafoam R-3
Stabilizer/Activator
Olin
Paraplex G-62
Secondary Stabilizer
C.P. Hall
Atomite
Filler
ECC International
TiO2
Pigment
DuPont
Loxiol G10
Lubricant
Henkel
Deplastol
Viscosity Depressant
Henkel
Cab-O-Sil M-5
Fumed Silica
Cabot
Celogen OT
Blowing Agent
Galata Corporation
Celogen 3990
Blowing Agent
Galata Corporation
© Mexichem Specialty Resins, Inc. 2013
The information contained herein is believed to be reliable, but no representations, guarantees or warranties of any kind are made as to its
accuracy, suitability for particular applications or the results to be obtained therefrom. The information is based on laboratory work with smallscale equipment and does not necessarily indicate end product performance. Because of the variations in methods, conditions and equipment
used commercially in processing these materials, no warranties or guarantees are made as to the suitability of the products for the application
disclosed. Full-scale testing and end product performance are the responsibility of the user. Mexichem Specialty Resins, Inc. shall not be
liable for and the customer assumes all risk and liability of any use or handling of any material beyond Mexichem Specialty Resins, Inc.’s direct
control. The SELLER MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Nothing contained herein is to be considered as permission, recommendation,
nor as an inducement to practice any patented invention without permission of the patent owner.
TAB-013
Mexichem Specialty Resins, Inc.
JUL 2013