Pechiney Emballage Flexible Europe

American Can Company

American National Can Company

William E Bowen

Lee Murray

Patricia M McCarry

Lee J Murray, Jr

Michael Stecker

A multilayer structure with improved permeation for atmospheric diffusion of aromatic products wherein the structure comprises: a permeable membrane wherein said permeable membrane comprises at least two polymeric layers wherein the polymer of each layer is independently selected from the group consisting of polyethylene, very low density polyethylene, low density polyethylene, ethylene methylacrylate copolymer; a release layer wherein said release layer comprises a nylon polymer or a ethylene vinyl alcohol copolymer wherein the release layer is adhered to most inner polymeric layer of the permeable member which comprises the permeable membrane and wherein the adhesion between release layer and the adjacent layer of the polymeric permeable membrane is a relatively weak bond compared to the bond between the layers of the polymeric permeable membrane; and an impermeable membrane wherein said impermeable membrane comprises one or more layers wherein the materials which comprise the individual layers of the impermeable membrane are independently selected from metal or foil and wherein said impermeable portion is laminated to said release layer.

Membrane permeable to aromatic products

A multilayer structure with improved permeation for atmospheric diffusion of aromatic products wherein the structure comprises, a permeable membrane wherein said permeable membrane comprises at least two polymeric layers wherein the polymer of each layer is independently selected from the group consisting of polyethylene, very low density polyethylene, low density polyethylene, ethylene methylacrylate copolymer; a release layer wherein said release layer comprises a nylon polymer or a ethylene vinyl alcohol copolymer wherein the release layer is adhered to most inner polymeric layer of the permeable-member which comprises the permeable membrane and wherein the adhesion between release layer and the adjacent layer of the polymeric permeable membrane is a relatively weak bond compared to the bond between the layers of the polymeric permeable membrane; and an impermeable membrane wherein said impermeable membrane comprises one or more layers wherein the materials which comprise the individual layers of the impermeable membrane are independently selected from metal or foil and wherein said impermeable portion is laminated to said release layer.

A multilayer permeable film structure having high temperature capabilities comprising a first, perforated sealable layer; a second primer layer and a third outer layer is disclosed. The multilayer permeable film structure can be heat sealed to a formed tray containing a volatile material.

Permeable membranes having high temperature capabilities

Multilayer film structures and packages therefrom which are particularly suited for containing organics such as organic liquids or solvents, e.g., amines, diamines, triamines, xylenes, tolene, ethoxyethanols, urethanes, or epoxies, or the like, or materials containing organics are disclosed as are methods for containing such organics. The film structures have two layer elements. The first layer element has a flexible barrier material layer and a sealant layer; the second layer element has a high barrier material layer; and when formed into a package such as a pouch the sealant layer is disposed interiorly and is used to seal the package together. Suitable materials for the high barrier material include metal foil, e.g., aluminum foil, and nylon coated on at least one side with a polyvinylidene chloride copolymer; the flexible barrier material layer is suitably nylon; and, the sealant is preferably ethylene vinyl acetate. Additional layers such as additional primer, adhesive, tie or sealant layers can also be present as can at least one protective layer disposed over the high barrier material layer. The packages of this invention can contain the organics in varying conditions, including elevated heat and/or humidity, without blistering, bubbling, cracking or product permeation.

Multilayer film structure and packages therefrom for organics

A perforated plastic film is produced by forming a pattern of light absorbing material (e.g., in dot and/or circular forms) on the film and subjecting the printed film to radiant energy from a light source in order to melt the film areas covered with the light absorbing material, thus producing a corresponding plurality of perforations in the plastic film.

Method of making perforated films

In a manufacturing operation utilizing radiation and particularly ultraviolet radiation irradiating a surface, a plurality of radiation carrying pipes positioned at one end thereof adjacent the surface and within the radiation, and radiation sensors positioned at the other end of the light pipes within a cooling stream. The invention also includes a fixture and a method for adjusting the position of the radiation carrying pipes.

Growing community of inventors

Neenah, WI, United States of America

William E Bowen