Westvaco Corporation

Westrock Mwv, LLC

Meadwestvaco Corporation

Barry Gene Calvert

Walter Hamilton Donnellan

Ralph Scott Peterson

Walter H Donnellan

Christopher J Parks

Michael P Wade

Richard Eric Nordgren

Leo Thomas Mulcahy

Jack Leong Lum

Janice Lynn Kirkham

Dan D Diedrich

Walter H Donnellan, Iii

Jack Ronald Hornsby

Danny B Hill

G Mervin Broce

John D Broughman, Jr

A paper-based cooking container providing improved product browning is disclosed, wherein the container includes a base, a sidewall and, optionally, a rim, and wherein a portion of the base has been modified through densification of the paper-based material. The container preferably includes both densified and undensified paper-based material.

Paper-based cooking container providing improved product browning

In one embodiment, an apparatus and a method of manufacturing a paperboard tray therewith is provided. In particular, a hub is configured to rotate about a shaft. On the hub, a plurality of first molds are formed in the hub. Conversely, a plurality of second molds are each disposed above each of the plurality of first molds respectively and rotate above the first molds. In this configuration, the plurality of second molds are configured to move in unison with the plurality of first molds as the hub and second molds rotate and to move orthogonally towards and then away from the first molds as the second molds rotate.

Mill-style blow molding wheel mechanism and method of manufacturing using the same

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

This invention relates to paperboard lids having a radiation cured overprint varnish. Such structures of this type, generally, protect the graphics which are printed upon the paperboard lid such that the graphics are not distorted and/or marred during the platen sealing process.

Method for producing a lid having a cured overprint varnish

Using induction heaters, two rotating metal bands are heated to a target temperature, continuously sensed by infrared temperature probes and then compressed on either side of a mated pair of paperboard carton flanges in an extended nip. The mated paperboard flange area is then heated by conduction from the metal bands to the activation temperature of the coating material to form a uniform bond between the paperboard surfaces.

Apparatus and method for sealing of paperboard containers using

This invention relates to a fin sealed box, an integrate barrier coating and a relockable fitment closure that are combine to create a novel package which is easily formed, filled and sealed by the packager and easily opened and reclosed by the consumer. Such structures of this type, generally, employ reclose feature such as an audibly relockable fitment breakaway button snap, an tear-away tab, to add even more convenience and tamper-evidence for the consumer.

Bagless barrier paperboard container with a tamper evident reclosable

This invention relates sealing of paperboard cartons in order to form an integral structural. Such structures of this type, generally, employ the use of radiation curable, pressure-sensitive adhesives and 'spot curing' of the adhesives in order to seal and form the carton.

Carton sealing method utilizing radiation curable pressure-sensitive

This invention relates to carton opening features. Such structures of this type, generally, utilize a straight line sealing method and a lid having a specified corner radius, wherein the carton can be easily opened at the specified corner.

Carton opening feature

This invention relates to paperboard packages or cartons suitable for distributing, marketing and heating prepared food products. Such structures of this type, generally, include a coating which is mass stable below 400.degree. F., has chloroform-soluble extractives not exceeding 0.5 mg/in..sup.2 of a food contact surface when exposed to a food simulating solvent of 150.degree. F. for two hours and is flexible enough to withstand conventional scoring in a cross-direction with a 2 point male rule and a 0.062 inch channel while sustaining a crack length ratio of no greater than 0.1 and exhibits resistance to blocking when stacked under a load at ambient conditions of 0.5 lbs/sq. in or greater.

Heat sealed, ovenable food cartons and lids

Paperboard lids for containers comprising of a paperboard substrate, a coating of particulate minerals, a printed layer, and a radiation cured overprint varnish wherein the overprint varnish is mass stable and heat resistant above 325.degree. F. and does not distort or stick during platen heat sealing.

Lid having a cured overprint varnish

This invention relates to a method and apparatus for heat sealing polymer coated paperboard substrates with light energy. Such structures of this type, generally, use lasers which allow a very accurate placement of the sealing energy and a controllable energy level.

Method for heat sealing paperboard substrates using a uniform energy

This invention relates to a method and apparatus for heat sealing polymer coated paperboard substrates using a uniform energy distributed light energy beam. Such structures of this type, generally, use lasers which allow a very accurate placement of the sealing energy and a controllable energy level.

Apparatus for heat sealing paperboard substrates using a uniform energy

This invention relates to paperboard packages or cartons suitable for distributing, marketing and heating prepared food products. Such structures of this type, generally, include a coating which is mass stable below 400.degree. F., has chloroform-soluble extractives not exceeding 0.5 mg/in..sup.2 of a food contact surface when exposed to a food simulating solvent of 150.degree. F. for two hours and is flexible enough to withstand conventional scoring in a cross-direction with a 2 point male rule and a 0.062 inch channel while sustaining a crack length ratio of no greater than 0.1.

Heat sealed, ovenable food cartons

Lids and/or closures applied to cartons which are used for distributing, marketing and heating small portions of prepared food are fabricated with a paperboard structural substrate coated with a heat activated (or sealable) coating of water soluble acrylic emulsion that is applied by means of a press in conjunction with a printing operation or, alternatively, by a coating operation separate from the printing operation. Other critical coating characteristics are that the acrylic emulsion coating is heat sealable to itself, to polymers such as polyethylene terephthalate and directly to unprimed paperboard, with or without a clay coating, and can be tack bonded at temperatures of 250.degree. F. or greater. Additionally, so as to avoid food contamination from the coating, the coating is mass stable below 400.degree. F. and have chloroform-soluble extractives not exceeding 0.5 mg/in.sup.2 of a food contact surface when exposed to a food simulating solvent, (for example, N-Heptane) at 150.degree. F. for two hours.

Heat sealed, ovenable food carton lids

This invention relates to paperboard food packages. Such structures of this type, generally, have lids which can be sealed to the food package which utilizes press-applied coatings as a sealing medium.

Growing community of inventors

Covington, VA, United States of America

Barry Gene Calvert