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Sumika Polymers North America, LLC & Sumika Polymer Compounds Europe, LLC Company Logo

Espolex® 3255

Espolex® 3255 is a TPV known for its excellent colorability and appearance. It forms strong bonds with polypropylene compounds and polyethylene, while exhibiting thermoplastic processing characteristics combined with rubber-like properties. It is particularly well-suited for two-shot molding. Its applications include: Handle grips Gaskets Active spoilers Appliances Automotive exterior trim Automotive interior trim Boats Jet-propelled vehicles Mud flaps Weatherstripping Over-molding Injection molded parts   Features: Excellent flowability Great surface appearance for styling Easy bonding with other materials Benefits: Anti-slip properties Noise reduction

Brand: Espolex (23 products)

Polymer Name: Thermoplastic Polyolefin (TPO)

Processing Methods: Injection Molding

Features: Consistent High Quality, Cost Effective, Good Adhesion, Good Colorability, Good Surface Appearance, Heat Resistance, High Elasticity, High Performance, Light Weight, Low Density, Pigmentable

Density: 890.0 - 890.0 kg/m³

Technical Data SheetSafety Data Sheet

Enhanced TDS

Knowde-enriched technical product data sheet

Identification & Functionality

Chemical Family
Polyolefins
Polymer Name
Thermoplastic Polyolefin (TPO)
Technologies
Elastomers
Product Families
Elastomers — Thermoplastic Elastomers
Thermoplastic Olefin Elastomers (TPO)

Features & Benefits

Labeling Claims
Sustainable
Materials Features
Consistent High Quality,
Cost Effective,
Good Adhesion,
Good Colorability,
Good Surface Appearance,
Heat Resistance,
High Elasticity,
High Performance,
Light Weight,
Low Density,
Pigmentable

Applications & Uses

Markets
Automotive & Transportation,
Consumer Goods,
Electrical & Electronics
Applications
Consumer Goods — Appliances & Electronics
Automotive & Transportation — Automotive
Exterior & Body
Consumer Goods — Footwear
Consumer Goods — Housewares
Consumer Goods — Lawn & Garden
Consumer Goods — Luggage & Leather Goods
Electrical & Electronics — Parts & Components
Batteries,
Circuit Breakers,
Conduits & Cable Management,
Connectors,
Housings & Enclosures
Consumer Goods — Sports & Recreation
Electrical & Electronics — Wire & Cable
Building Wires & Power Cables,
Data Communication Cables,
Jacketing & Insulation,
Optical Fiber & Telecom
Compatible Polymers & Resins
Polyethylenes (PE),
Polypropylenes (PP)
Plastics & Elastomers End Uses
Appliances,
Automotive Exterior Trim,
Automotive Interior Trim,
Boat,
Jet-Propelled Vehicle,
Mud Flaps,
Weatherstripping
Plastics & Elastomers Processing Methods
Injection Molding

Properties

Color
Black
Physical Properties
ValueUnitsTest Method / Conditions
Density0.89g/cm³ISO 1183
Melt Flow Rate (230°C/21.18 N)40.0g/10minISO 1133
Tensile Modulus (100% Modulus, 500mm/min)7.0MPaISO 37 Type 1
Tensile Strength (500mm/min)11.0MPaISO 37 Type 1
Tensile Elongation (500mm/min)550.0%ISO 37 Type 1
Tear Strength60.0N/mmISO 34-B
Durometer Hardness (15 second delay)89.0Shore AASTM D2240
Processing Information (Injection Molding)
ValueUnitsTest Method / Conditions
Nozzle Temperature370 - 470°F-
Front Zone370 - 470°F-
Middle Zone350 - 450°F-
Rear Zone340 - 430°F-
Mold Temperature70 - 120°F-
Injection SpeedFast--
Screw RPMSlow--
Injection Pressure20% more than actual transfer pressure--
Back Pressure50 - 100psi-
Pack/Hold Pressure (of Injection Pressure)40 - 80%-

Technical Details & Test Data

Test Results
  • Effect of Temperature on Hardness

Remarks:
Test method- ASTM D2240
Test specimen - Injection molded specimen

Espolex® 3255 - Test Results

  • Spiral Flow Characteristics (230°C)

    Espolex® 3255 - Test Results - 1

  • Effect of Shear Rate on Viscosity (200°C)

The figure shows the relation between shear rate and viscosity of ESPOLEX TPE Series at 200°C in comparison with other thermoplastic resins and elastomers. Since its viscosity is dependent on shear rate, effective processing control can be achieved through the adjustment of injection pressure and injection speed.

Espolex® 3255 - Test Results - 2

  • Coverage of Hardness and Compression Set Values

Espolex® 3255 - Test Results - 3

 

 

Tool Design Guidelines
Parameter Value
Wall Thickness (WT) 2 – 4 mm
Gate Type Fan Gate
Gate Thickness (GT) 0.6 – 0.9 x WT
Gate Width (GW) > 2 x GT
Gate Land (GL) < 0.75 mm
Runner Type Round
Sprue “O” Diameter 3.5 x WT
Main-Runner (SR) 2.5 x WT
Secondary-Runner (MR) 1.5 x WT
Draft 3 – 6 ° per side
Inside Radius (IR) WT / 2
Outside Radius (OR) WT + IR
Surface Texture Light Stipple
Surface Coating Nickel / Teflon
Vent Quantity 1 Every Inch
Vent Depth

0.013 – 0.025 mm
Vent Width 5 mm