Dow Global Technolgoies LLC

Yinglong Chen

Yijian Lin

Jill M Martin

Sanjib Biswas

Fabricio Arteaga Larios

Pavan K Valavala

Akanksha Garg

Mehmet Demirors

Jeffrey D Weinhold

Didem Oner-Deliormanli

Jason A Reese

Larry Dotson

Huang Wu

Kevin W Light

Annette Baker

J Cody Clinton

Larry D Dotson

Pavan Kumar Valavala

The present disclosure provides for an automated spray system () to produce an elastomeric pad on a railroad tie. The automated spray system () includes a two-component spray system () for spraying a two-component reaction mixture to produce the elastomeric pad on the railroad tie. The automated spray system further includes a gantry system () having girder () that supports the spray applicator.

Automated spray system to produce an elastomeric pad on a railroad tie

Disclosed is a curly fiber having a fiber centroid and comprising a first region having a first centroid and a second region wherein the first region comprises an ethylene/alpha olefin interpolymer composition in an amount of at least 75 weight percent based on total weight of the first region and wherein the ethylene/alpha olefin interpolymer composition is characterized by a low temperature peak and a high temperature peak on an elution profile via improved comonomer composition distribution (ICCD) procedure, and a full width at half maximum of the high temperature peak is less than 6.0° C. and the second region is a material comprising a polymer which is different from the ethylene/alpha-olefin interpolymer of the first region and wherein the regions are arranged such that at least one of the first centroid and the second centroid is not the same as the fiber centroid.

Crimped multi-component fibers

A process comprising forming fibers having at least a first region and a second region wherein the first region comprises an ethylene/alpha olefin interpolymer composition characterized by: density in the range of 0.930 to 0.965 g/cm; melt index (I2) in the range of from 10 to 60 g/10 minutes; molecular weight distribution in the range of from 1.5 to 2.6; tan delta at 1 radian/second of at least 45; a low temperature peak and a high temperature peak on an elution profile via improved comonomer composition distribution (ICCD) procedure; and full width at half maximum of the high temperature peak is less than 6.0° C. and stretching the fibers to an elongation of at least 20% thereby increasing curl of the fiber. The process may further include forming a non-woven from the fibers and the stretching of the fibers may occur before or after forming of the non-woven.

Method of manufacture of curly fibers

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Lake Jackson, TX, United States of America

Yinglong Chen