International Paper Company

Gene W Bartholomew

Donna J Wenzel

Morton S Delozier

James R Quick

Maxine Klass-Hoffman

William A Wittosch

Bruce Rose

David J Romanowicz

Raymond A Volpe

Henry L Mei

Elizabeth C Cornelius

Mark D Peterson

Michael Olshavsky

Michael DeAngelis

Jongchul Kim

Recyclable and repulpable coated paper stock, preferably for use as ream wrap, comprising a substrate coated on at least one surface with a base coat and at least one additional coat over said base coat. Both coats are water based dispersions of a polymer selected from the group consisting of acrylic polymers, acrylic copolymers, polyvinyl acetate, polyvinyl alcohol, ethylene-vinyl acetate, polyvinyl chloride, styrene butadiene copolymers, polyvinylidiene chloride and its copolymers, or starch. The wax free coating forms a pin-hole free continuous film on the substrate which is resistant to water and water vapor. The invention also includes processes for making and recycling the invented coated paper stocks.

Recyclable and repulpable ream wrap and related methods of manufacture

A laminate structure for use as a container for liquids including a structural substrate such as a paperboard which facilitates a gable top container having incorporated on its inner surface a layer of a fibrous matrix which has encapsulated or incorporated therein a finely ground divinylbenzene ethyl vinylbenzene copolymer, polystyrene divinylbenzene copolymer resin or a cyclodextrin placed on its inner surface. Additionally, the fibrous matrix may be produced as an insert and attached to the inner surface of the gable top container through the use of various items such as hot melt adhesives.

Container for the selective scavenging of citrus juice components

Recyclable and compostable coated paper stock comprising a substrate coated on at least one surface with a primer coat and a top coat both of which are water based dispersions. The primer coat comprises a water based dispersion of a polymer selected from the group comprising acrylic polymers, acrylic copolymers, polyvinyl acetate, polyvinyl alcohol, poly-ethylene vinyl acetate, poly-ethylene vinyl chloride, styrene butadiene copolymers, polyvinylidiene chloride or starch. The top coat comprises a water based dispersion of a polymer selected from the group comprising acrylic polymers, acrylic copolymers, styrene butadiene copolymers or polyvinylidiene chloride. In another embodiment the top coat further includes a wax component comprising 15-90 wt. % of the polymer and 5-85 wt. % of the wax. The substrate is coated with a primer coat prior to the application of the top coat to seal the substrate surface. The top coat forms a film over the primer coat and imparts water and grease resistant properties to the coated paper stocks. The invention also includes processes for making and using the invented coated paper stocks.

Recyclable and compostable coated paper stocks and related methods of

Recyclable paper stock comprising a substrate coated on at least one surface with a water based emulsion coating. The water based emulsion coating comprises 20-90 dry wt. % of an acrylic-styrene copolymer and 5-70 dry wt. % of a wax. In another embodiment a second water based emulsion coating comprised of an acrylic-styrene copolymer is coated on the substrate surface opposite the initial water based emulsion coating. The substrate may also be coated with a primer coat prior to the application of the water based emulsion coatings to seal the substrate surface. The invention also includes processes for making and using the invented acrylic coated paper stocks.

Recyclable acrylic coated paper stocks and related methods of manufacture

Paper and paperboard materials having enhanced biodegradability are produced by treatment of substrates with aqueous chemical solutions having properties which increase the decomposition of the substrates so treated. The chemical solutions consist of chemical nutrients which provide a source of alternate electron acceptors to enhance biodegradability through facultative anaerobic decomposition or chemical nutrients which, increase microbial growth on the paper or paperboard thereby enhancing decomposition of the paper or paperboard. The chemical solutions are absorbed and retained in the substrate or incorporated directly into a slurry of fibrous based material and formed into a paper product using paper making apparatus. In both instances, the methods enhance the biodegradability of the paper or paperboard so treated.

Enhanced paper and paperboard biodegradability

Electrically conductive polymeric materials, having microwave susceptive characteristics, are produced by suspending a fibrous based material and a monomer precursor of a conductive polymer in an aqueous solution. Addition of a chemical oxidant induces polymerization of the monomer resulting in coating of the fibrous based material. The invention provides a susceptor material useful for cooking food items in a microwave oven, and enhances the browning and/or crispening of the items. Conductive polymer coated fibrous based materials can be formed into a paper product by conventional papermaking techniques or molded into an integral structures having microwave interactive properties.

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Tuxedo Park, NY, United States of America

Gene W Bartholomew