elastomultiester - elastoester filament


are both elastomultiester and elastoester same thing ?

Are they spun from blend or are they bicomponent ?

I hear it's Teijin technology .

Thanks in advance for any information

Reply to
Loading thread data ...

"Elastoester Fiber:

Current U.S. Elastoester Fiber Producers: (Elastoester is not produced in the United States. The only producer is Teijin Ltd., Japan). Federal Trade Commission Definition for Elastoester Fiber: Elastoester is an official FTC generic fiber type defined as: At least 50% by weight aliphatic polyether and at least 35% by weight polyester."

Meanwhile, over in Europe,

formatting link

"Two amendments to EU Directives have been newly published.

2006/3/EC* amends Annexes I and II of Directive 96/74/EC on textile names. It adds details for a new permitted generic fibre, ("elastomultiester") to the list of permitted generic fibre names. 2006/2/EC** amends Annexe II of Directive 96/73/EC on certain methods for the quantitative analysis of binary textile fibre mixtures. It defines uniform test methods for "polylactide" and "elastomultiester". EEA member states have until January 2007 to comply with these Directives This means that 96/74/EC has now been amended a total of three times. The previous two amendments were 2004/34/EC, which added "polylactide" as a new permitted fibre name; and 97/37/EC, which added "cashgora", "aramid", "polyimide" and "lyocell" as new permitted fibre names.

---------------------------------------------------------------------------- The new fibre, elastomultiester, is defined in the Directive as:- Fibre formed by interaction of two or more chemically distinct linear macromolecules in two or more distinct phases (of which none exceeds

85% by mass) which contains ester groups as dominant functional unit (at least 85%) and which, after suitable treatment when stretched to one and a half times its original length and released, recovers rapidly and substantially to its initial length. Put simply, it is a bicomponent fibre, based on polyesters, which will stretch up to 50% and recover."

John Aspen Research, -

formatting link
"Turning Questions into Answers"

Opinions expressed herein are my own and may not represent those of my employer.

Reply to

PolyTech Forum website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.