High barrier closure liner for carbonated beverage containers an

Details High barrier closure liner for carbonated beverage containers an High barrier closure liner for carbonated beverage containers an

1998-01-27

2000-10-31

Anthony, Joseph D.

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

428 365, 428 3691, 4283227, 215347, 215348, 215228, 25218828, B29D 900, B29D 2200, B32B 712, B65D 5306, C09K 1500

Patent

active

061399310

ABSTRACT:
A multi-layer closure liner for carbonated beverage containers and the like, including a gas barrier layer, a first tie layer on an upper surface of the gas barrier layer, a second tie layer on a lower surface of the gas barrier layer, a first polyolefinic resin layer on the upper surface of the first tie layer, and a second polyolefinic layer on the lower surface of the second tie layer. In the preferred embodiment, the gas barrier layer is ethylene vinyl alcohol copolymer (EVOH), the first and second tie layers are functionalized polyolefin and the first and second polyolefinic resin layers are ethylene vinyl acetate (EVA). The layers defining the closure liner are preferably simultaneously formed using a co-extrusion process to prevent the gas barrier layer from being exposed to moisture.

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