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Arnitel® PL581

Technical Datasheet | Supplied by DSM
Arnitel® PL581 by DSM is a high-performance, non-reinforced & non-flame retardant, thermoplastic copolyester (TPC). It is processed by injection molding & extrusion. It is a lighter, smarter, greener alternative to conventional rubbers thus, reducing environmental impact. It possesses flexibility, strength & excellent processing characteristics. It offers chemical resistance against household chemicals like cleaning agents, sunscreen lotion and automotive greases and oils. It allows for cost effective solutions since it yields thermoplastic processing advantages over rubber, resulting in faster cycle times in comparison with other TPE's. It provides high abrasion resistance, excellent load bearing capacity and environmental resistance and very consistent performance over temperature ranges from -55°C (-67°F) to +150°C (+300°F) and longest lifetime. Arnitel® PL581 is used in railway pads applications. It meets ISO 18064 for TPC-ET.
Product Type
  • Polyester TPE > COPE
  • Polyester [Polyester] > > Co-polyester
Physical Form
Product Status

Arnitel® PL581 Properties

Physical Properties

Value & Unit
Test Condition
Test Method
Melt Volume Flow Rate (MVR)
15 cm3/10 min
(At 230°C, 2.16 kg)
ISO 1133
Linear Mold Shrinkage, Flow
1.7 %
( )
ISO 294-4
Linear Mold Shrinkage
1.8 %
( )
ISO 294-4

Arnitel® PL581 Processing Guidelines

Injection Molding Properties

Value & Unit
Test Condition
Test Method
Melt Temperature
230 - 250 °C
Moisture Content
< 0.05 %
Dew Point
-30 - -40 °C
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