|  | "Elastic Nonwoven Fabrics from Specialty Polyolefin Elastomers"
N. Dharmarajan, V. Gallez, G. Racine, S. Srinivas and C.Y. Cheng
(consultant) (INDEX 05, April 2005, Geneva, Switzerland)
ABSTRACT
This paper describes polyolefin elastomers with isotactic propylene
crystallinity. These polymers contain a predominant (>80%) amount of propylene
with isotactic propylene crystallinity, with the balance of the composition
being ethylene and other a-olefins. This new family of thermoplastic
elastomers are highly elastic and exhibit excellent recovery from
deformation. These polymers share the processability of conventional
polyolefins such as polyethylene and isotactic propylene and can, thus, be
easily formed into spunbond and meltblown nonwoven fabrics using conventional
processes. The paper will discuss the processing optimization and elastic
properties of nonwoven fabrics made using these polymers, with an emphasis on
the influence of polymer characteristics and processing conditions on the
elastic behavior of the spunbond fabrics.
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