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Excellent abrasion resistance for extended service life in demanding mechanical environments.
Outstanding elasticity and recovery performance, maintaining shape integrity after repeated deformation.
Good oil, grease, and hydrocarbon resistance suitable for industrial lubricant exposure.
High transparency and clarity, enabling aesthetic applications requiring optical quality.
Easy processability via extrusion, injection molding, and calendering without special drying requirements.
Transparent protective films for electronic displays and touch panels.
Flexible tubing for pneumatic and fluid transfer systems.
Soft-touch overmolding for consumer electronics housings and automotive interior components.
High-clarity gaskets and seals in medical device assemblies.
Elastic belts and rollers in office automation and printing equipment.
| Chemical Type | Aliphatic polyester-based thermoplastic polyurethane |
| Product Form | Pellets |
| Appearance | Transparent, translucent granules |
| Hardness (Shore A) | 90 ± 2 |
| Melt Flow Index (210°C/2.16 kg) | 10–14 g/10 min |
| Density | 1.18–1.20 g/cm³ |
| Key Features | UV-stable, non-yellowing, low extractables |
| Primary Applications | Transparent elastomeric parts, precision sealing, soft-touch overmolding |
Q1: What are the key processing advantages of E390A compared to conventional TPU grades?
A: E390A offers enhanced melt flow stability and lower melt viscosity under standard extrusion and injection molding conditions, enabling smoother processing at moderate temperatures and reduced energy input. Its balanced thermal stability supports consistent output in high-speed production without premature degradation.
Q2: Is E390A suitable for applications requiring good low-temperature flexibility and abrasion resistance?
A: Yes — E390A is formulated to deliver excellent elastomeric performance across a broad temperature range, including retained flexibility below 0 °C and strong resistance to mechanical wear, making it well-suited for dynamic components such as seals, rollers, and protective overmolds.
Q3: Can E390A be blended with other thermoplastics or elastomers?
A: E390A demonstrates good compatibility with several common thermoplastic matrices, including certain polyesters and polyolefins, particularly when used as a functional modifier. Compatibility testing under actual processing conditions is recommended to confirm phase behavior and final property retention.
Q4: Does E390A require special drying before processing?
A: Like most hygroscopic TPU materials, E390A should be dried prior to high-temperature processing. Standard desiccant drying at 70–80 °C for 2–4 hours is typically sufficient to achieve optimal moisture levels and prevent surface defects or molecular weight reduction during melt processing.
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E-mail: wangxingqiang@ericwchem.com
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Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China
