SK Chemicals has developed SKYGREEN P-SF which offers excellent properties for shrink film and labels for various packaging applications.
It is an environmentally friendly copolyester grade and this show high performance plastic resin which can be substitute PVC, OPS another polyester products.
Normally, P-SF2 grade is applied for shrink film of container, this shrink film has properties of good transparency, high shrinkage, and superior printability
The data listed here is preliminary data sheet of product. Therefore this sheet should not be used to establish specification limits or used alone as a basis for design. This information is not intended as a warranty of any kind. Customers must make their own representative test and assume all risks of use, whether used alone or in combination with other products. SK Chemicals assumes no obligation or liability of any advice furnished by it or results obtained with respect to these products. All warranties of merchantability for a particular purpose or use are excluded and disclaimed.
Property | Test Method | Unit | Result |
Specific Gravity | ASTM D792 | 1.29 | |
Mold Shrinkage | ASTM D955 | % | 0.3 "-' 0.6 |
Rockwell Hardness | ASTM D785 | R-scale | |
Tensile Strength @ Yield | ISO 527 | MPa | 55 |
Tensile Strength @ Break | ISO 527 | MPa | 25 |
Elongation @ Yield | ISO 527 | % | 4.3 |
Elongation @ Break | ISO 527 | % | 260 |
Flexural Strength | ISO 178 | MPa | 74 |
Flexural Modulus | ISO 178 | MPa | 2.110 |
lzod Impact Strength Notched@ 23 C | ISO 180 | KJ/m2 | 10.4 |
Heat Distortion Temperature @ 0.455 MPa / @ 1.820 MPa | ISO 75 | C | 66 / 58 |
Haze | ASTM D1003 | % | < 1.0 |
Transmittance | ASTM D1003 | % | 90 |
The information in this data sheet is. to the best of our knowledge. true and accurate. The representations about the product are based upon test results achieved under laboratory practices supervised and controlled by SK chemicals corporation. | |||
PSF 2 | SF 200 | |
IV_Inherent Viscosity (dl/g) | 0.77 ± 0.02 | 0.77 ± 0.02 |
Tg (℃) | 71± 1 | 75± 1 |
Drying Conditions | PSF2 | SF200 | |
Drying Temperature | 50 ~ 60 ℃ | 55 ~ 65 ℃ | |
Drying Time | 8 to 10 hours | ||
Air Flow of Dry Air | > 0.065m³ /min per kg/h( 1cfm per lb/h) | ||
Dew Point of Dry Air | < -30℃, -40℃ is better for good drying | ||
Residual Moisture Content | <0.015%(150ppm) | ||
Hopper Recommendation | Capacity | 6 to 8 times extruder output per hour | |
Height/Dia. Ratio | > 2:1. 3:1 is better for plug f ow | ||
Insulation | Well-insulation to improve energy efficiency | ||
Monitoring | Inlet Air Temperature & Dew Point | ||
ITEM | Unit | PSF2 | SF200 |
CoolUnit / Inlet | ℃ | 35 ± 10 / 120 ± 10 | |
BARREL | ℃ | Zone#l (190±5) . Zone#2(210 ±5) ,Zone#3~#8 (270 ±5) | |
ADA PTER ~ FEED BLOCK | ℃ | 270 ±5 | |
T-DIE | ℃ | 275 ±5 | |
Cast Roll | ℃ | 28 ± 3 | |
ITEM | Unit | PSF2 | SF200 |
MD Stretching | Ratio | - | |
℃ | 28 ± 2 | ||
TD Stretching | Ratio | 4 - 4.6 | |
Pre Heat'(Zone 1~3) | ℃ | 110 / 105 / 95 (± 2) | 115 / 110 / 100 (±2) |
Stretching'(Zone1~4) | ℃ | 80 / 77 / 75 / 73 (±2) | 83 / 80 / 77 / 75 (±2) |
Heat Set''(Zone 1~5) | ℃ | 73 / 73 / 83 / 83 / 83 (± 2) | 75/ 75 / 90 / 90 / 90 (±2) |
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