Bemis Company, Inc.

Milprint, Inc.

Rusty L Witthuhn

Kevin Philip Nelson

Kenneth Eastman Kiesow

Curtis Randolph Barr

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.

Liners for bulk containers

A packaging system is provided including a container having a plurality of walls and a flexible liner film placed in a product receiving chamber defined by the walls. The liner film comprises a base film having a first surface, a second surface and at least one side margin. A cold seal cohesive material layer is applied to the second surface of the base film so that at least a portion of at least one side margin of the base film is substantially free of cold seal cohesive material. A release film is laminated to the cold seal cohesive material layer and at least partially overlaps a portion of side margin substantially free of cold seal cohesive material.

Growing community of inventors

Appleton, WI, United States of America

Rusty L Witthuhn