New TPE grades cut cycle times; broaden applications and processing windows

02-Jul-09

PolyOne's GLS Thermoplastic Elastomers business unit unveiled new DYNALLOY™ TPE grades at NPE 2009 which it says offer important benefits to injection molders and extruders, including faster cycle times compared to unfilled styrenic TPEs. The DYNALLOY 8900 materials are said to reduce set-up time for higher productivity, and solve a persistent technical challenge by bonding to both low-density polyethylene (LDPE) and polypropylene (PP). This eliminates a requirement for two separate TPEs, thereby ideal for two-shot overmolding and insert molding in consumer, personal care and packaging applications. In addition, the company maintains that DYNALLOY 8900 TPEs provide a number of notable performance properties, including enhanced tear strength for greater part longevity. Compared to thermoplastic vulcanizates (TPVs), these materials are said to offer up to 20% better tear strength, making them an excellent choice for seals and caps in a variety packaging applications.