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US 11,141,965 B2Granted
Co-extruded multi-layer tube for use in forming flexible bags
AssigneeOP-Hygiene IP GmbH
InventorsHeiner Ophardt, Ali Mirbach, Patrick Geurts
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Abstract
A multilayer film including a barrier layer, a sealing layer, and an alcohol barrier layer. The alcohol barrier layer includes cyclic olefin copolymer and is positioned between the barrier layer and the sealing layer. The multilayer film can be used to form a pouch for containing an alcohol-based hand sanitizer.
Claims20
A multilayer film comprising:
- a barrier layer;
- a sealing layer;
- and
- an alcohol barrier layer;
- wherein the alcohol barrier layer is positioned between the barrier layer and the sealing layer;
- wherein the alcohol barrier layer comprises a cyclic olefin copolymer;
- and
- wherein the alcohol barrier layer is positioned directly between two polyethylene layers.
5 more elements
A multilayer film comprising:
- a barrier layer;
- a sealing layer;
- and
- an alcohol barrier layer;
- wherein the alcohol barrier layer is positioned between the barrier layer and the sealing layer;
- wherein the alcohol barrier layer comprises a cyclic olefin copolymer;
- wherein the barrier layer comprises nylon 6 or polyethylene terephthalate;
- wherein the sealing layer comprises low density polyethylene;
- wherein the multilayer film further comprises a tear resistance layer that is positioned between the barrier layer and the alcohol barrier layer;
- and
- wherein the tear resistance layer comprises low density polyethylene.
8 more elements
A multilayer film comprising:
- a barrier layer;
- a sealing layer;
- and
- an alcohol barrier layer;
- wherein the alcohol barrier layer is positioned between the barrier layer and the sealing layer;
- wherein the alcohol barrier layer comprises a cyclic olefin copolymer;
- wherein the barrier layer has a higher melting temperature than the sealing layer;
- wherein the multilayer film further comprises a tear resistance layer that is positioned between the barrier layer and the alcohol barrier layer;
- wherein the tear resistance layer comprises low density polyethylene;
- wherein the barrier layer comprises a blend of high density polyethylene and low density polyethylene, or a blend of high density polyethylene, cyclic olefin copolymer, and low density polyethylene;
- and
- wherein the sealing layer comprises low density polyethylene.
9 more elements
Dependencies are inferred from the claim text.