Westvaco Corporation

Meadwestvaco Corporation

Vestvaco Corporation

Westrock Mwv, LLC

Christopher J Parks

Todd H Huffman

Debora F Massouda

Christopher J Hession

Robert A Farrell

Jack Leong Hung Lum

Barry Gene Calvert

Ralph Scott Peterson

Frederick L Kurrle

Ladislav Falat

Leo Thomas Mulcahy

Kenneth J Wolfe

Roger D Hall

A reclosable locking container and method for packaging dry materials, comprising a box formed from a foldable substrate and a molded reclosable, locking fitment, said fitment being lockable in the open or closed position. The container of the invention may be adapted to provide barrier packaging of materials to extend the shelf life thereof by incorporating a barrier material, fin seal closure elements and optionally a skived side seam, and a tearable perforated opening.

Container with reclosable fitment

Bagless container with reclosable fitment

This invention relates to the extrusion coating of polyethylene terephthalate (PET) onto paperboard. Such structures of this type, generally, provide an enhanced film adhesion of the PET onto the paperboard, while reducing the coat weights of the PET.

Method and apparatus for enhancing film adhesion when extruding polyethylene terephthalate onto paperboard

A coupon bearing lid component for a container is prepared from a sheet of paperboard, said paperboard having an outer surface with a finished coating for printing graphics and an inner surface on which coupon indicia is printed, the improvement wherein the inner surface of the lid has bonded thereto a polymeric film to cover the printed coupon indicia.

Container lid with printed coupon

A non-foil composite laminate for an improved container providing an effective barrier for the containment of essential oils and prevention of losses of vitamin C. The non-foil composite laminate comprises an inner barrier layer of amorphous nylon and outer layers of heat sealable olefin polymer, facilitating manufacture while retaining desirable barrier properties.

Oxygen and flavor barrier laminate including amorphous nylon

This invention relates to paperboard composite structures with a glass-coated film. Such structures of this type, generally, improve the shelf life of refrigerated and other oxygen-sensitive products and provide a barrier to flavors and fragrances to maintain product quality.

Method of making a composite paperboard structure with a

An authenticatable paper product is prepared by adding to a papermaking furnish fibers treated with from about 50-200 lb/ton of a fluorescent whitening agent (FWA). The paper made from the papermaking furnish will include fluorescent cellulosic fibers in an amount ranging from between 0.1-4.0 lb/ton to achieve FWA concentrations within the range of 1-20 ppm.

Process of manufacturing authenticatable paper products

In the manufacture of composite paperboard/polymer packages, the adhesion between the polymer component and paperboard component can be enhanced by treating the polymer film with a surface treatment, for example, ozone, before the two components are brought together. The present invention is particularly applicable to a blow molding process employing one or more paperboard blanks and a blow molded polymer film.

Ozone treatment for composite paperboard/ polymer package

A non-foil barrier laminate having improved structural integrity comprises a combination of paperboard, heat-sealable layers and an oxygen barrier layer wherein the oxygen barrier layer is sandwiched between tie layers formed from an anhydride-modified linear low density polyethylene material.

Barrier laminate with improved interlayer adhesion

Ozone treatment for composite paperboard/polymer package

Paperboard packaging material is disclosed for use in the manufacture of cartons for products which give off significant odors or aromas. The packaging material is treated to absorb odors generated by the products packaged in the packaging material. For this purpose, the paperboard packaging material is coated on one surface with an odor sorbing coating composition comprising activated carbon dispersed in an aqueous binder system. The odor sorbing coating covers substantially all interior surfaces of cartons formed from the packaging material to provide an effective concentration of activated carbon sufficient to render the contents substantially odor-free.

Odor sorbing packaging material

A printed microwave susceptor includes a paper or paperboard substrate having first and second surfaces. A food contact layer is applied to one surface, and separate thermal insulating layers and microwave interactive layers are applied to the other surface, with the thermal insulating layer being disposed between the substrate and the microwave interactive layer. The microwave interactive layer may be overcoated with a protective layer for abrasion resistance.

Printed microwave susceptor with improved thermal and migration

Paperboard packaging for non-refrigerated liquid products and for dry products contains a buried polyvinyl alcohol copolymer (PVOH) barrier layer which has a low oxygen permeability particularly at low relative humidity, and outer heat-sealable surfaces which provide good resistance to moisture penetration and a means for fabricating the packaging.

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Ellicott City, MD, United States of America

Christopher J Parks