Notice: Function _load_textdomain_just_in_time was called incorrectly. Translation loading for the wordpress-seo domain was triggered too early. This is usually an indicator for some code in the plugin or theme running too early. Translations should be loaded at the init action or later. Please see Debugging in WordPress for more information. (This message was added in version 6.7.0.) in /var/www/html/wp-includes/functions.php on line 6260 Propylene-Based Copolymers, A Method Of Making The Fibers And Articles Made From The Fibers - Nonwovens Industry

What are you searching for?

Sign in
Patents

Propylene-Based Copolymers, A Method Of Making The Fibers And Articles Made From The Fibers

Author Image

By: Karen McIntyre

Editor, Nonwovens Industry

An extensible fiber comprising a propylene copolymer has been patented. The copolymer comprises at least about 50 weight percent of units derived from propylene and at least about 5 weight percent of units derived from a comonomer other than propylene. The fiber is characterized as having a crystallinity index less than 30% and a modulus of less than or equal to about 22 g/den. The extensible fiber can be characterized by having a retained load of more than or equal to about 2.5% and an immediate set of less than or equal to about 22% as determined in a 50% 1-cycle test. The 50% 1-cycle test is one in which a load on the fiber is measured while the fiber is extended at a rate of 10 inches per minute to an elongation of 50% then retracted to an elongation of 0% at a rate of 10 inches per minute and then extended a second time to an elongation of 50% at a rate of 10 inches per minute. The retained load is the load measured at 30% elongation during retraction divided by the load measured at 30% elongation during the first extension. The immediate set is the elongation at which a positive load is first measured during the second extension.

Add us as a preferred source on Google

Get the latest Nonwovens Industry news, insights and analysis in your Google Search and AI experiences.

Add Nonwovens Industry as a preferred source on Google (opens in a new tab)

Keep Up With Our Content. Subscribe To Nonwovens Industry Newsletters

Topics