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Taita Chemical 818

Chemical Family
Styrenics

GPPS (General Purpose Polystyrene ) 818 is the most state of the art from US NOVA CHEMICAL,Low Residual Monomer and it is used in OPS/PSP sheet applications.

Product families

Applications

Applications
  • Consumer Goods — Housewares
  • Consumer Goods — Sports & Recreation
  • Consumer Goods — Stationery
  • Art & Office Supplies
Printing & Packaging — Packaging
  • Other Packaging Materials

Product Families

Plastics — Basic Thermoplastics
  • Styrenics

Other characteristics

Polymer Name
General Purpose Polystyrene (GPPS)
Melt Flow Index
1.9 - 1.9 g/10 min
Color
Transparent
Markets
  • Consumer Goods
  • Printing & Packaging
Technology
Plastics
Characteristic
  • Good Heat Resistance
  • Mold Dimension Stability
  • Good Transparency
  • Easy Processing
  • High M.W.
  • High strength
  • Extrusion Grade
Labeling Claims
Food Contact Acceptable
Material Features
  • Dimensional Stability
  • Easier Processing
  • Excellent Transparency Properties
  • Food Contact Acceptable
  • Good Thermal Stability
  • Heat Resistance
  • High Molecular Weight
  • High Strength
Certifications and Compliance

Directive 2011/65/EC amended through EU/2015/863 (RoHS); FDA 21 CFR 177.1640

Compatible Polymers and Resins
Polystyrenes (PS)
Plastics and Elastomers End Uses
  • Housewares
  • Rigid Films
  • Rigid Packaging
  • Stationary Supplies
  • Toys
Plastics and Elastomers Functions
Resin

Technical data

Table 1 of 5

8 rows
CharacteristicValueUnitMethod
Elongation at Break (23°C, 1/8” Sample)2.0%D638
Haze (2.8mm thick)0.5%—
Izod Impact Strength (23°C, A method, notched 1/4”×1/2”×5/2”)1.5kg-cm/cmD256
Melt Flow Index (200°C, 5 kg load)1.9g/10minD1238
Residual SM monomer200.0ppm—
Specific Gravity1.046—D542
Tensile Strength at Yield (23°C,1/8” Sample)540.0kg/cm2D638
Vicat Softening Temperature (1 kg load, 3 mm Thick ,120 °C/hr )107.0°CD1525

Table 2 of 5

9 rows
CharacteristicValueMethod
RTI Elec (1.5 mm)50.0UL 746
RTI Elec (3.0 mm)50.0UL 746
RTI Elec (6.0 mm)50.0UL 746
RTI Imp (1.5 mm)50.0UL 746
RTI Imp (3.0 mm)50.0UL 746
RTI Imp (6.0 mm)50.0UL 746
RTI Str (1.5 mm)50.0UL 746
RTI Str (3.0 mm)50.0UL 746
RTI Str (6.0 mm)50.0UL 746

Table 3 of 5

9 rows
CharacteristicValueMethod
Arc ResistancePLC 6ASTM D495
Comparative Tracking IndexPLC 1UL 746
High Amp Arc lgnition (1.5 mm)PLC 3UL 746
High Amp Arc lgnition (3.0 mm)PLC 3UL 746
High Amp Arc lgnition (6.0 mm)PLC 3UL 746
High Voltage Arc Tracking RatePLC 2UL 746
Hot-Wire Ignition (1.5 mm)PLC 2UL 746
Hot-Wire Ignition (3.0 mm)PLC 1UL 746
Hot-Wire Ignition (6.0 mm)PLC 0UL 746

Table 4 of 5

6 rows
CharacteristicValueMethod
Flame Rating (1.5 mm, ALL)HBUL 94
Flame Rating (1.5 mm, ALL)HB75IEC 60695-11-10, -20
Flame Rating (3.0 mm, ALL)HBUL 94
Flame Rating (3.0 mm, ALL)HB40EC 60695-11-10, -20
Flame Rating (6.0 mm, ALL)HBUL 94
Flame Rating (6.0 mm, ALL)HB40IEC 60695-11-10, -20

Table 5 of 5

12 rows
CharacteristicValueUnit
Back Pressure71 - 213psi(kgf/cm2)
Drying Temperature80 - 85°C
Drying Time2.0 - 4.0hr
Front Zone205 - 230°C
Melt Zone180 - 190°C
Middle Zone195 - 225°C
Mold Temperature35 - 70°C
Molding PressureModerate to Moderately High—
Molding SpeedModerate to Fast—
Nozzle210 - 235°C
Rear Zone185 - 210°C
Screw Speed30 - 120rpm

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