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Excellent elasticity and recovery performance across a wide temperature range (−40 °C to 100 °C).
Good processability via injection molding, extrusion, and overmolding onto PP, PS, and ABS substrates.
Low compression set (<25% @ 70 °C, 22 h), ensuring long-term sealing and gasket integrity.
Halogen-free formulation compliant with RoHS and REACH directives for sustainable manufacturing.
Smooth surface finish and high gloss retention, ideal for consumer-facing soft-touch components.
Soft-grip handles and ergonomic tool housings in power tools and garden equipment.
Seals, gaskets, and vibration-damping pads in automotive interior modules.
Overmolded buttons, knobs, and control interfaces for home appliances and medical devices.
Flexible hinges and snap-fit closures for electronic enclosures and portable device casings.
Consumer product grips for sports equipment, personal care devices, and kitchen utensils.
| Chemical Type | Styrenic Block Copolymer (SBC)-based Thermoplastic Elastomer |
| Product Form | Pellets |
| Appearance | Translucent light amber granules |
| Hardness (Shore A) | 70 ± 3 |
| Density (g/cm³) | 0.92–0.94 |
| Melt Flow Rate (230 °C/2.16 kg) | 12–16 g/10 min |
| Tensile Strength (MPa) | 8–10 |
| Elongation at Break (%) | ≥450 |
Q1: What is the primary polymer matrix of P3870 TPE?
A: P3870 is a thermoplastic elastomer based on a styrenic block copolymer (SBC) architecture, offering a balanced combination of elasticity, melt processability, and surface tackiness suitable for overmolding and soft-touch applications.
Q2: Is P3870 compatible with common engineering thermoplastics for two-shot molding?
A: Yes — P3870 exhibits good adhesion to polypropylene (PP), polyethylene (PE), and ABS substrates when processed under standard injection molding conditions; optimal bonding performance typically requires substrate preheating and controlled melt temperature alignment.
Q3: What are the recommended drying conditions prior to processing?
A: P3870 should be dried at 70–80 °C for 2–4 hours in a desiccant dryer to minimize moisture-related surface defects and maintain consistent melt flow behavior during extrusion or injection molding.
Q4: Can P3870 be used in applications requiring regulatory compliance for food contact or skin contact?
A: P3870 is formulated without intentionally added heavy metals, phthalates, or primary aromatic amines; however, final compliance depends on the complete formulation, processing history, and target jurisdiction — users must conduct full regulatory validation for their specific application and end-use requirements.
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E-mail: wangxingqiang@ericwchem.com
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