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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 10967619 B1

PDFFull Text
Date of Patent:
Apr. 06, 2021

Filed:

Sep. 21, 2015

Polyolefin-based elastic film structures, laminates and methods thereof

Applicant:

Dow Global Technologies Llc, Midland, MI (US);

Inventors:

Andy C. Chang, Houston, TX (US);

Jacquelyn A. Degroot, Sugar Land, TX (US);

Kate R. Brown, Houston, TX (US);

Aleksandar Stoiljkovic, Waedenswil, CH;

Gert J. Claasen, Richterswil, CH;

Barbara Bonavoglia, Zurich, CH;

Carlos E. Ruiz, Houston, TX (US);

Assignee:

Dow Global Technologies LLC, Midland, MI (US);

Attorney:
Primary Examiner:

Scott R Walshon

Assistant Examiner:

Jasper Saberi

Int. Cl.
CPC ...
B32B 27/32 (2006.01); B29C 48/08 (2019.01); B29C 48/00 (2019.01); B29C 48/21 (2019.01); B32B 27/08 (2006.01); B32B 5/02 (2006.01); B32B 27/12 (2006.01); B29C 55/00 (2006.01); B29C 55/04 (2006.01); B32B 7/02 (2019.01); B32B 37/18 (2006.01); B32B 38/00 (2006.01); B29K 23/00 (2006.01); B29L 7/00 (2006.01); B29L 9/00 (2006.01);
U.S. Cl.
CPC ...
B32B 27/32 (2013.01); B29C 48/0018 (2019.02); B29C 48/022 (2019.02); B29C 48/08 (2019.02); B29C 48/21 (2019.02); B29C 55/005 (2013.01); B29C 55/04 (2013.01); B32B 5/022 (2013.01); B32B 7/02 (2013.01); B32B 27/08 (2013.01); B32B 27/12 (2013.01); B32B 27/327 (2013.01); B32B 37/182 (2013.01); B32B 38/0012 (2013.01); B29K 2023/08 (2013.01); B29K 2995/0063 (2013.01); B29L 2007/008 (2013.01); B29L 2009/00 (2013.01); B32B 2038/0028 (2013.01); B32B 2250/242 (2013.01); B32B 2255/00 (2013.01); B32B 2274/00 (2013.01); B32B 2307/51 (2013.01); B32B 2307/514 (2013.01); B32B 2307/72 (2013.01); B32B 2307/722 (2013.01); B32B 2555/00 (2013.01);
Abstract

A stretch-modified elastomeric multilayer film comprising a core layer comprising a first ethylene-α-olefin block copolymer, wherein the first ethylene-α-olefin block copolymer comprises at least 50 mol. % ethylene, has a melt index (I2) from 0.5 g/10 min to 5 g/10 min, and has a density of 0.850 g/cc to 0.890 g/cc, and at least one outer layer independently comprising a second ethylene-α-olefin block copolymer and from 2.5 to 30 wt. % of an antiblock agent, wherein the second ethylene-α-olefin block copolymer comprises at least 50 mol. % ethylene, has a melt index (I2) from 0.5 g/10 min to 25 g/10 min, and has a density of 0.850 g/cc to 0.890 g/cc, wherein the density of the first ethylene-α-olefin block copolymer is equal to or greater than the density of the second ethylene-α-olefin block copolymer.

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