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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 9701445 B1

PDFFull Text
Date of Patent:
Jul. 11, 2017

Filed:

Dec. 20, 2013

Liners for bulk containers

Applicant:

Bemis Company, Inc, Neenah, WI (US);

Inventors:

Rusty L. Witthuhn, Appleton, WI (US);

Kevin P. Nelson, Appleton, WI (US);

Assignee:

Bemis Company, Inc., Neenah, WI (US);

Attorney:

Lynn M. Nett

Primary Examiner:

Michael C Miggins

Int. Cl.
CPC ...
B65D 25/16 (2006.01); B65D 25/14 (2006.01); B32B 7/12 (2006.01); B32B 27/08 (2006.01); B32B 27/30 (2006.01); B32B 27/34 (2006.01); B32B 27/36 (2006.01); B29C 47/06 (2006.01); B29C 47/00 (2006.01); B29C 65/48 (2006.01); B65B 3/04 (2006.01); B65D 90/04 (2006.01); B29K 23/00 (2006.01); B29K 29/00 (2006.01); B29L 9/00 (2006.01); B29L 31/00 (2006.01);
U.S. Cl.
CPC ...
B65D 25/16 (2013.01); B29C 47/004 (2013.01); B29C 47/0064 (2013.01); B29C 47/0066 (2013.01); B29C 47/065 (2013.01); B29C 65/48 (2013.01); B32B 7/12 (2013.01); B32B 27/08 (2013.01); B32B 27/306 (2013.01); B32B 27/34 (2013.01); B32B 27/36 (2013.01); B65B 3/045 (2013.01); B65D 25/14 (2013.01); B65D 90/046 (2013.01); B29K 2023/0616 (2013.01); B29K 2023/0625 (2013.01); B29K 2029/00 (2013.01); B29K 2995/0067 (2013.01); B29L 2009/00 (2013.01); B29L 2031/7128 (2013.01); B32B 2250/05 (2013.01); B32B 2250/24 (2013.01); B32B 2270/00 (2013.01); B32B 2274/00 (2013.01); B32B 2307/7244 (2013.01); B32B 2439/00 (2013.01);
Abstract

Described are liners for bulk containers such as intermediate bulk containers (IBC) that are abuse-resistant and barrier-providing. The liners have at least one sidewall that is multi-plied and the plies are multi-layered. The liners are preferably metal-free. Each ply independently comprises at least three layers that comprise: a first layer and a third layer each comprising a linear low density polyethylene (LLDPE) or a very low density polyethylene (VLDPE); and a second layer between the first and third layers and comprising a thermoplastic oxygen barrier of ethylene-vinyl alcohol copolymer (EVOH) and a thermoplastic elastomer (TPE). A ply may further comprise a fourth layer and a fifth layer, each comprising a polyamide, the fourth layer being located between the first and second layers and the fifth layer being located between the second and third layers. Methods of making and using the liners are also provided.

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