Lidding film for modified atmosphere packaging
AssigneeHoneywell International Inc.
InventorsRobert R. Ting, Earl L. Hatley, Jeffrey D. Moulton
Life of this patent
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Abstract
The invention relates to high gas barrier packaging films exhibiting good shrinkage and containing an antifog composition for modified atmosphere packaging of foods and the like. The films are useful for producing modified atmosphere packages that preserve and enhance the shelf life of food and non-food oxygen sensitive items. The films exhibit excellent shrinkage, permanent antifog, easy processing and low cost of manufacture.
Claims37
A multilayered film which comprises a nylon film attached to a surface of a first polyethylene film via an intermediate adhesive layer, a surface of an ethylene vinyl alcohol film attached to another surface of the first polyethylene film, a surface of a second polyethylene film attached to another surface of the ethylene vinyl alcohol film, and an antifog composition on another surface of the second polyethylene film or incorporated into the second polyethylene film.
A process for producing a multilayered film which comprises coextruding an ethylene vinyl alcohol film to a surface of a first polyethylene film and coextruding a second polyethylene film to another surface of the ethylene vinyl alcohol film;
- either applying an antifog composition onto another surface of the second polyethylene film or incorporating an antifog composition into the second polyethylene film;
- and then either coextruding or laminating a nylon film onto another surface of the first polyethylene film via an intermediate adhesive layer.
A food package which comprises a container having an open portion and a multilayered film sealing the open portion;
- which multilayered film comprises a nylon film attached to a surface of a first polyethylene film via an intermediate adhesive layer, a surface of an ethylene vinyl alcohol film attached to another surface of the first polyethylene film, a surface of a second polyethylene film attached to another surface of the ethylene vinyl alcohol film, and an antifog composition on another surface of the second polyethylene film or incorporated into the second polyethylene film;
- the multilayered film being positioned such that the antifog composition is on the open portion.
A multilayered film which comprises a nylon film attached to a surface of an oxygen barrier film, a polyethylene film attached to another surface of the oxygen barrier film via an adhesive layer, and an antifog composition on another surface of the polyethylene film or incorporated into the polyethylene film.
Dependencies are inferred from the claim text.