Invention Grant
- Patent Title: Liners for bulk containers
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Application No.: US15100052Application Date: 2013-12-20
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Publication No.: US09701445B2Publication Date: 2017-07-11
- Inventor: Rusty L. Witthuhn , Kevin P. Nelson
- Applicant: BEMIS COMPANY, INC
- Applicant Address: US WI Neenah
- Assignee: Bemis Company, Inc.
- Current Assignee: Bemis Company, Inc.
- Current Assignee Address: US WI Neenah
- Agent Lynn M. Nett
- International Application: PCT/US2013/076843 WO 20131220
- International Announcement: WO2015/094325 WO 20150625
- Main IPC: B65D25/16
- IPC: B65D25/16 ; B65D25/14 ; B32B7/12 ; B32B27/08 ; B32B27/30 ; B32B27/34 ; B32B27/36 ; B29C47/06 ; B29C47/00 ; B29C65/48 ; B65B3/04 ; B65D90/04 ; B29K23/00 ; B29K29/00 ; B29L9/00 ; B29L31/00

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.
Public/Granted literature
- US20170021970A1 LINERS FOR BULK CONTAINERS Public/Granted day:2017-01-26
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