Lubrizol
Estane® 58237 TPU
Estane 58237 is a 90A aromatic polyether-based thermoplastic polyurethane (TPU) developed for film extrusion applications. This grade combines good physical properties and elasticity with high moisture vapor transmission, making it suitable for breathable TPU films. Estane 58237 provides strong tensile strength, good abrasion resistance and reliable flexibility for technical film applications.
Key Features:
- Polyether-based TPU
- Hardness: 90 Shore A
- High moisture vapor transmission
- Good physical properties and elasticity
- Good tensile strength (34.5 MPa)
- High elongation (550%)
- Good tear resistance
- Suitable for breathable film applications
Processing Form:
- Blown Film Extrusion
- Flat Die / Cast Film Extrusion
Processing Notes:
Prior to processing, the material should be dried at 82°C (180°F) for 2–4 hours using a desiccant dryer. The recommended maximum moisture level before processing is 0.02%.
Typical extrusion temperatures range from approximately 177–199°C depending on the zone configuration.
Purpose:
Application:
Used for blown and cast TPU film extrusion where high moisture vapor transmission and breathable film performance are required.
Delivery Form:
Pellets
Key Sustainability Features of Estane TPU
Bio-Based Content
The Estane ECO TPU series incorporates renewable materials, with bio-based content ranging from 20% to 69%, certified according to ASTM D6866.
Biomass Balance Approach
The Estane RNW TPU line utilizes mass-balanced biomass feedstocks, reducing reliance on fossil-based sources while maintaining the quality and performance of standard petroleum-based resins.
Reduced Carbon Footprint
Implementing sustainable feedstocks in Estane RNW TPU products has achieved up to a 59% reduction in product carbon footprint, contributing to lower greenhouse gas emissions.
Performance Consistency
TPUs deliver the same high-quality performance as traditional TPUs, ensuring that sustainability enhancements do not compromise material integrity.
